| Current Path : /compat/linux/proc/self/root/usr/src/contrib/sendmail/src/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //compat/linux/proc/self/root/usr/src/contrib/sendmail/src/map.c |
/*
* Copyright (c) 1998-2008 Sendmail, Inc. and its suppliers.
* All rights reserved.
* Copyright (c) 1992, 1995-1997 Eric P. Allman. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the sendmail distribution.
*
*/
#include <sendmail.h>
SM_RCSID("@(#)$Id: map.c,v 8.706 2010/07/27 03:35:42 ca Exp $")
#if LDAPMAP
# include <sm/ldap.h>
#endif /* LDAPMAP */
#if NDBM
# include <ndbm.h>
# ifdef R_FIRST
ERROR README: You are running the Berkeley DB version of ndbm.h. See
ERROR README: the README file about tweaking Berkeley DB so it can
ERROR README: coexist with NDBM, or delete -DNDBM from the Makefile
ERROR README: and use -DNEWDB instead.
# endif /* R_FIRST */
#endif /* NDBM */
#if NEWDB
# include "sm/bdb.h"
#endif /* NEWDB */
#if NIS
struct dom_binding; /* forward reference needed on IRIX */
# include <rpcsvc/ypclnt.h>
# if NDBM
# define NDBM_YP_COMPAT /* create YP-compatible NDBM files */
# endif /* NDBM */
#endif /* NIS */
#include "map.h"
#if NEWDB
# if DB_VERSION_MAJOR < 2
static bool db_map_open __P((MAP *, int, char *, DBTYPE, const void *));
# endif /* DB_VERSION_MAJOR < 2 */
# if DB_VERSION_MAJOR == 2
static bool db_map_open __P((MAP *, int, char *, DBTYPE, DB_INFO *));
# endif /* DB_VERSION_MAJOR == 2 */
# if DB_VERSION_MAJOR > 2
static bool db_map_open __P((MAP *, int, char *, DBTYPE, void **));
# endif /* DB_VERSION_MAJOR > 2 */
#endif /* NEWDB */
static bool extract_canonname __P((char *, char *, char *, char[], int));
static void map_close __P((STAB *, int));
static void map_init __P((STAB *, int));
#ifdef LDAPMAP
static STAB * ldapmap_findconn __P((SM_LDAP_STRUCT *));
#endif /* LDAPMAP */
#if NISPLUS
static bool nisplus_getcanonname __P((char *, int, int *));
#endif /* NISPLUS */
#if NIS
static bool nis_getcanonname __P((char *, int, int *));
#endif /* NIS */
#if NETINFO
static bool ni_getcanonname __P((char *, int, int *));
#endif /* NETINFO */
static bool text_getcanonname __P((char *, int, int *));
#if SOCKETMAP
static STAB *socket_map_findconn __P((const char*));
/* XXX arbitrary limit for sanity */
# define SOCKETMAP_MAXL 1000000
#endif /* SOCKETMAP */
/* default error message for trying to open a map in write mode */
#ifdef ENOSYS
# define SM_EMAPCANTWRITE ENOSYS
#else /* ENOSYS */
# ifdef EFTYPE
# define SM_EMAPCANTWRITE EFTYPE
# else /* EFTYPE */
# define SM_EMAPCANTWRITE ENXIO
# endif /* EFTYPE */
#endif /* ENOSYS */
/*
** MAP.C -- implementations for various map classes.
**
** Each map class implements a series of functions:
**
** bool map_parse(MAP *map, char *args)
** Parse the arguments from the config file. Return true
** if they were ok, false otherwise. Fill in map with the
** values.
**
** char *map_lookup(MAP *map, char *key, char **args, int *pstat)
** Look up the key in the given map. If found, do any
** rewriting the map wants (including "args" if desired)
** and return the value. Set *pstat to the appropriate status
** on error and return NULL. Args will be NULL if called
** from the alias routines, although this should probably
** not be relied upon. It is suggested you call map_rewrite
** to return the results -- it takes care of null termination
** and uses a dynamically expanded buffer as needed.
**
** void map_store(MAP *map, char *key, char *value)
** Store the key:value pair in the map.
**
** bool map_open(MAP *map, int mode)
** Open the map for the indicated mode. Mode should
** be either O_RDONLY or O_RDWR. Return true if it
** was opened successfully, false otherwise. If the open
** failed and the MF_OPTIONAL flag is not set, it should
** also print an error. If the MF_ALIAS bit is set
** and this map class understands the @:@ convention, it
** should call aliaswait() before returning.
**
** void map_close(MAP *map)
** Close the map.
**
** This file also includes the implementation for getcanonname.
** It is currently implemented in a pretty ad-hoc manner; it ought
** to be more properly integrated into the map structure.
*/
#if O_EXLOCK && HASFLOCK && !BOGUS_O_EXCL
# define LOCK_ON_OPEN 1 /* we can open/create a locked file */
#else /* O_EXLOCK && HASFLOCK && !BOGUS_O_EXCL */
# define LOCK_ON_OPEN 0 /* no such luck -- bend over backwards */
#endif /* O_EXLOCK && HASFLOCK && !BOGUS_O_EXCL */
/*
** MAP_PARSEARGS -- parse config line arguments for database lookup
**
** This is a generic version of the map_parse method.
**
** Parameters:
** map -- the map being initialized.
** ap -- a pointer to the args on the config line.
**
** Returns:
** true -- if everything parsed OK.
** false -- otherwise.
**
** Side Effects:
** null terminates the filename; stores it in map
*/
bool
map_parseargs(map, ap)
MAP *map;
char *ap;
{
register char *p = ap;
/*
** There is no check whether there is really an argument,
** but that's not important enough to warrant extra code.
*/
map->map_mflags |= MF_TRY0NULL|MF_TRY1NULL;
map->map_spacesub = SpaceSub; /* default value */
for (;;)
{
while (isascii(*p) && isspace(*p))
p++;
if (*p != '-')
break;
switch (*++p)
{
case 'N':
map->map_mflags |= MF_INCLNULL;
map->map_mflags &= ~MF_TRY0NULL;
break;
case 'O':
map->map_mflags &= ~MF_TRY1NULL;
break;
case 'o':
map->map_mflags |= MF_OPTIONAL;
break;
case 'f':
map->map_mflags |= MF_NOFOLDCASE;
break;
case 'm':
map->map_mflags |= MF_MATCHONLY;
break;
case 'A':
map->map_mflags |= MF_APPEND;
break;
case 'q':
map->map_mflags |= MF_KEEPQUOTES;
break;
case 'a':
map->map_app = ++p;
break;
case 'T':
map->map_tapp = ++p;
break;
case 'k':
while (isascii(*++p) && isspace(*p))
continue;
map->map_keycolnm = p;
break;
case 'v':
while (isascii(*++p) && isspace(*p))
continue;
map->map_valcolnm = p;
break;
case 'z':
if (*++p != '\\')
map->map_coldelim = *p;
else
{
switch (*++p)
{
case 'n':
map->map_coldelim = '\n';
break;
case 't':
map->map_coldelim = '\t';
break;
default:
map->map_coldelim = '\\';
}
}
break;
case 't':
map->map_mflags |= MF_NODEFER;
break;
case 'S':
map->map_spacesub = *++p;
break;
case 'D':
map->map_mflags |= MF_DEFER;
break;
default:
syserr("Illegal option %c map %s", *p, map->map_mname);
break;
}
while (*p != '\0' && !(isascii(*p) && isspace(*p)))
p++;
if (*p != '\0')
*p++ = '\0';
}
if (map->map_app != NULL)
map->map_app = newstr(map->map_app);
if (map->map_tapp != NULL)
map->map_tapp = newstr(map->map_tapp);
if (map->map_keycolnm != NULL)
map->map_keycolnm = newstr(map->map_keycolnm);
if (map->map_valcolnm != NULL)
map->map_valcolnm = newstr(map->map_valcolnm);
if (*p != '\0')
{
map->map_file = p;
while (*p != '\0' && !(isascii(*p) && isspace(*p)))
p++;
if (*p != '\0')
*p++ = '\0';
map->map_file = newstr(map->map_file);
}
while (*p != '\0' && isascii(*p) && isspace(*p))
p++;
if (*p != '\0')
map->map_rebuild = newstr(p);
if (map->map_file == NULL &&
!bitset(MCF_OPTFILE, map->map_class->map_cflags))
{
syserr("No file name for %s map %s",
map->map_class->map_cname, map->map_mname);
return false;
}
return true;
}
/*
** MAP_REWRITE -- rewrite a database key, interpolating %n indications.
**
** It also adds the map_app string. It can be used as a utility
** in the map_lookup method.
**
** Parameters:
** map -- the map that causes this.
** s -- the string to rewrite, NOT necessarily null terminated.
** slen -- the length of s.
** av -- arguments to interpolate into buf.
**
** Returns:
** Pointer to rewritten result. This is static data that
** should be copied if it is to be saved!
*/
char *
map_rewrite(map, s, slen, av)
register MAP *map;
register const char *s;
size_t slen;
char **av;
{
register char *bp;
register char c;
char **avp;
register char *ap;
size_t l;
size_t len;
static size_t buflen = 0;
static char *buf = NULL;
if (tTd(39, 1))
{
sm_dprintf("map_rewrite(%.*s), av =", (int) slen, s);
if (av == NULL)
sm_dprintf(" (nullv)");
else
{
for (avp = av; *avp != NULL; avp++)
sm_dprintf("\n\t%s", *avp);
}
sm_dprintf("\n");
}
/* count expected size of output (can safely overestimate) */
l = len = slen;
if (av != NULL)
{
const char *sp = s;
while (l-- > 0 && (c = *sp++) != '\0')
{
if (c != '%')
continue;
if (l-- <= 0)
break;
c = *sp++;
if (!(isascii(c) && isdigit(c)))
continue;
for (avp = av; --c >= '0' && *avp != NULL; avp++)
continue;
if (*avp == NULL)
continue;
len += strlen(*avp);
}
}
if (map->map_app != NULL)
len += strlen(map->map_app);
if (buflen < ++len)
{
/* need to malloc additional space */
buflen = len;
if (buf != NULL)
sm_free(buf);
buf = sm_pmalloc_x(buflen);
}
bp = buf;
if (av == NULL)
{
memmove(bp, s, slen);
bp += slen;
/* assert(len > slen); */
len -= slen;
}
else
{
while (slen-- > 0 && (c = *s++) != '\0')
{
if (c != '%')
{
pushc:
if (len-- <= 1)
break;
*bp++ = c;
continue;
}
if (slen-- <= 0 || (c = *s++) == '\0')
c = '%';
if (c == '%')
goto pushc;
if (!(isascii(c) && isdigit(c)))
{
if (len-- <= 1)
break;
*bp++ = '%';
goto pushc;
}
for (avp = av; --c >= '0' && *avp != NULL; avp++)
continue;
if (*avp == NULL)
continue;
/* transliterate argument into output string */
for (ap = *avp; (c = *ap++) != '\0' && len > 0; --len)
*bp++ = c;
}
}
if (map->map_app != NULL && len > 0)
(void) sm_strlcpy(bp, map->map_app, len);
else
*bp = '\0';
if (tTd(39, 1))
sm_dprintf("map_rewrite => %s\n", buf);
return buf;
}
/*
** INITMAPS -- rebuild alias maps
**
** Parameters:
** none.
**
** Returns:
** none.
*/
void
initmaps()
{
#if XDEBUG
checkfd012("entering initmaps");
#endif /* XDEBUG */
stabapply(map_init, 0);
#if XDEBUG
checkfd012("exiting initmaps");
#endif /* XDEBUG */
}
/*
** MAP_INIT -- rebuild a map
**
** Parameters:
** s -- STAB entry: if map: try to rebuild
** unused -- unused variable
**
** Returns:
** none.
**
** Side Effects:
** will close already open rebuildable map.
*/
/* ARGSUSED1 */
static void
map_init(s, unused)
register STAB *s;
int unused;
{
register MAP *map;
/* has to be a map */
if (s->s_symtype != ST_MAP)
return;
map = &s->s_map;
if (!bitset(MF_VALID, map->map_mflags))
return;
if (tTd(38, 2))
sm_dprintf("map_init(%s:%s, %s)\n",
map->map_class->map_cname == NULL ? "NULL" :
map->map_class->map_cname,
map->map_mname == NULL ? "NULL" : map->map_mname,
map->map_file == NULL ? "NULL" : map->map_file);
if (!bitset(MF_ALIAS, map->map_mflags) ||
!bitset(MCF_REBUILDABLE, map->map_class->map_cflags))
{
if (tTd(38, 3))
sm_dprintf("\tnot rebuildable\n");
return;
}
/* if already open, close it (for nested open) */
if (bitset(MF_OPEN, map->map_mflags))
{
map->map_mflags |= MF_CLOSING;
map->map_class->map_close(map);
map->map_mflags &= ~(MF_OPEN|MF_WRITABLE|MF_CLOSING);
}
(void) rebuildaliases(map, false);
return;
}
/*
** OPENMAP -- open a map
**
** Parameters:
** map -- map to open (it must not be open).
**
** Returns:
** whether open succeeded.
*/
bool
openmap(map)
MAP *map;
{
bool restore = false;
bool savehold = HoldErrs;
bool savequick = QuickAbort;
int saveerrors = Errors;
if (!bitset(MF_VALID, map->map_mflags))
return false;
/* better safe than sorry... */
if (bitset(MF_OPEN, map->map_mflags))
return true;
/* Don't send a map open error out via SMTP */
if ((OnlyOneError || QuickAbort) &&
(OpMode == MD_SMTP || OpMode == MD_DAEMON))
{
restore = true;
HoldErrs = true;
QuickAbort = false;
}
errno = 0;
if (map->map_class->map_open(map, O_RDONLY))
{
if (tTd(38, 4))
sm_dprintf("openmap()\t%s:%s %s: valid\n",
map->map_class->map_cname == NULL ? "NULL" :
map->map_class->map_cname,
map->map_mname == NULL ? "NULL" :
map->map_mname,
map->map_file == NULL ? "NULL" :
map->map_file);
map->map_mflags |= MF_OPEN;
map->map_pid = CurrentPid;
}
else
{
if (tTd(38, 4))
sm_dprintf("openmap()\t%s:%s %s: invalid%s%s\n",
map->map_class->map_cname == NULL ? "NULL" :
map->map_class->map_cname,
map->map_mname == NULL ? "NULL" :
map->map_mname,
map->map_file == NULL ? "NULL" :
map->map_file,
errno == 0 ? "" : ": ",
errno == 0 ? "" : sm_errstring(errno));
if (!bitset(MF_OPTIONAL, map->map_mflags))
{
extern MAPCLASS BogusMapClass;
map->map_orgclass = map->map_class;
map->map_class = &BogusMapClass;
map->map_mflags |= MF_OPEN|MF_OPENBOGUS;
map->map_pid = CurrentPid;
}
else
{
/* don't try again */
map->map_mflags &= ~MF_VALID;
}
}
if (restore)
{
Errors = saveerrors;
HoldErrs = savehold;
QuickAbort = savequick;
}
return bitset(MF_OPEN, map->map_mflags);
}
/*
** CLOSEMAPS -- close all open maps opened by the current pid.
**
** Parameters:
** bogus -- only close bogus maps.
**
** Returns:
** none.
*/
void
closemaps(bogus)
bool bogus;
{
stabapply(map_close, bogus);
}
/*
** MAP_CLOSE -- close a map opened by the current pid.
**
** Parameters:
** s -- STAB entry: if map: try to close
** bogus -- only close bogus maps or MCF_NOTPERSIST maps.
**
** Returns:
** none.
*/
/* ARGSUSED1 */
static void
map_close(s, bogus)
register STAB *s;
int bogus; /* int because of stabapply(), used as bool */
{
MAP *map;
extern MAPCLASS BogusMapClass;
if (s->s_symtype != ST_MAP)
return;
map = &s->s_map;
/*
** close the map iff:
** it is valid and open and opened by this process
** and (!bogus or it's a bogus map or it is not persistent)
** negate this: return iff
** it is not valid or it is not open or not opened by this process
** or (bogus and it's not a bogus map and it's not not-persistent)
*/
if (!bitset(MF_VALID, map->map_mflags) ||
!bitset(MF_OPEN, map->map_mflags) ||
bitset(MF_CLOSING, map->map_mflags) ||
map->map_pid != CurrentPid ||
(bogus && map->map_class != &BogusMapClass &&
!bitset(MCF_NOTPERSIST, map->map_class->map_cflags)))
return;
if (map->map_class == &BogusMapClass && map->map_orgclass != NULL &&
map->map_orgclass != &BogusMapClass)
map->map_class = map->map_orgclass;
if (tTd(38, 5))
sm_dprintf("closemaps: closing %s (%s)\n",
map->map_mname == NULL ? "NULL" : map->map_mname,
map->map_file == NULL ? "NULL" : map->map_file);
if (!bitset(MF_OPENBOGUS, map->map_mflags))
{
map->map_mflags |= MF_CLOSING;
map->map_class->map_close(map);
}
map->map_mflags &= ~(MF_OPEN|MF_WRITABLE|MF_OPENBOGUS|MF_CLOSING);
}
#if defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN)
extern int getdomainname();
/* this is mainly for backward compatibility in Sun environment */
static char *
sun_init_domain()
{
/*
** Get the domain name from the kernel.
** If it does not start with a leading dot, then remove
** the first component. Since leading dots are funny Unix
** files, we treat a leading "+" the same as a leading dot.
** Finally, force there to be at least one dot in the domain name
** (i.e. top-level domains are not allowed, like "com", must be
** something like "sun.com").
*/
char buf[MAXNAME];
char *period, *autodomain;
if (getdomainname(buf, sizeof buf) < 0)
return NULL;
if (buf[0] == '\0')
return NULL;
if (tTd(0, 20))
printf("domainname = %s\n", buf);
if (buf[0] == '+')
buf[0] = '.';
period = strchr(buf, '.');
if (period == NULL)
autodomain = buf;
else
autodomain = period + 1;
if (strchr(autodomain, '.') == NULL)
return newstr(buf);
else
return newstr(autodomain);
}
#endif /* SUN_EXTENSIONS && SUN_INIT_DOMAIN */
/*
** GETCANONNAME -- look up name using service switch
**
** Parameters:
** host -- the host name to look up.
** hbsize -- the size of the host buffer.
** trymx -- if set, try MX records.
** pttl -- pointer to return TTL (can be NULL).
**
** Returns:
** true -- if the host was found.
** false -- otherwise.
*/
bool
getcanonname(host, hbsize, trymx, pttl)
char *host;
int hbsize;
bool trymx;
int *pttl;
{
int nmaps;
int mapno;
bool found = false;
bool got_tempfail = false;
auto int status = EX_UNAVAILABLE;
char *maptype[MAXMAPSTACK];
short mapreturn[MAXMAPACTIONS];
#if defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN)
bool should_try_nis_domain = false;
static char *nis_domain = NULL;
#endif
nmaps = switch_map_find("hosts", maptype, mapreturn);
if (pttl != 0)
*pttl = SM_DEFAULT_TTL;
for (mapno = 0; mapno < nmaps; mapno++)
{
int i;
if (tTd(38, 20))
sm_dprintf("getcanonname(%s), trying %s\n",
host, maptype[mapno]);
if (strcmp("files", maptype[mapno]) == 0)
{
found = text_getcanonname(host, hbsize, &status);
}
#if NIS
else if (strcmp("nis", maptype[mapno]) == 0)
{
found = nis_getcanonname(host, hbsize, &status);
# if defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN)
if (nis_domain == NULL)
nis_domain = sun_init_domain();
# endif /* defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN) */
}
#endif /* NIS */
#if NISPLUS
else if (strcmp("nisplus", maptype[mapno]) == 0)
{
found = nisplus_getcanonname(host, hbsize, &status);
# if defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN)
if (nis_domain == NULL)
nis_domain = sun_init_domain();
# endif /* defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN) */
}
#endif /* NISPLUS */
#if NAMED_BIND
else if (strcmp("dns", maptype[mapno]) == 0)
{
found = dns_getcanonname(host, hbsize, trymx, &status, pttl);
}
#endif /* NAMED_BIND */
#if NETINFO
else if (strcmp("netinfo", maptype[mapno]) == 0)
{
found = ni_getcanonname(host, hbsize, &status);
}
#endif /* NETINFO */
else
{
found = false;
status = EX_UNAVAILABLE;
}
/*
** Heuristic: if $m is not set, we are running during system
** startup. In this case, when a name is apparently found
** but has no dot, treat is as not found. This avoids
** problems if /etc/hosts has no FQDN but is listed first
** in the service switch.
*/
if (found &&
(macvalue('m', CurEnv) != NULL || strchr(host, '.') != NULL))
break;
#if defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN)
if (found)
should_try_nis_domain = true;
/* but don't break, as we need to try all methods first */
#endif /* defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN) */
/* see if we should continue */
if (status == EX_TEMPFAIL)
{
i = MA_TRYAGAIN;
got_tempfail = true;
}
else if (status == EX_NOTFOUND)
i = MA_NOTFOUND;
else
i = MA_UNAVAIL;
if (bitset(1 << mapno, mapreturn[i]))
break;
}
if (found)
{
char *d;
if (tTd(38, 20))
sm_dprintf("getcanonname(%s), found\n", host);
/*
** If returned name is still single token, compensate
** by tagging on $m. This is because some sites set
** up their DNS or NIS databases wrong.
*/
if ((d = strchr(host, '.')) == NULL || d[1] == '\0')
{
d = macvalue('m', CurEnv);
if (d != NULL &&
hbsize > (int) (strlen(host) + strlen(d) + 1))
{
if (host[strlen(host) - 1] != '.')
(void) sm_strlcat2(host, ".", d,
hbsize);
else
(void) sm_strlcat(host, d, hbsize);
}
else
{
#if defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN)
if (VendorCode == VENDOR_SUN &&
should_try_nis_domain)
{
goto try_nis_domain;
}
#endif /* defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN) */
return false;
}
}
return true;
}
#if defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN)
if (VendorCode == VENDOR_SUN && should_try_nis_domain)
{
try_nis_domain:
if (nis_domain != NULL &&
strlen(nis_domain) + strlen(host) + 1 < hbsize)
{
(void) sm_strlcat2(host, ".", nis_domain, hbsize);
return true;
}
}
#endif /* defined(SUN_EXTENSIONS) && defined(SUN_INIT_DOMAIN) */
if (tTd(38, 20))
sm_dprintf("getcanonname(%s), failed, status=%d\n", host,
status);
if (got_tempfail)
SM_SET_H_ERRNO(TRY_AGAIN);
else
SM_SET_H_ERRNO(HOST_NOT_FOUND);
return false;
}
/*
** EXTRACT_CANONNAME -- extract canonical name from /etc/hosts entry
**
** Parameters:
** name -- the name against which to match.
** dot -- where to reinsert '.' to get FQDN
** line -- the /etc/hosts line.
** cbuf -- the location to store the result.
** cbuflen -- the size of cbuf.
**
** Returns:
** true -- if the line matched the desired name.
** false -- otherwise.
*/
static bool
extract_canonname(name, dot, line, cbuf, cbuflen)
char *name;
char *dot;
char *line;
char cbuf[];
int cbuflen;
{
int i;
char *p;
bool found = false;
cbuf[0] = '\0';
if (line[0] == '#')
return false;
for (i = 1; ; i++)
{
char nbuf[MAXNAME + 1];
p = get_column(line, i, '\0', nbuf, sizeof(nbuf));
if (p == NULL)
break;
if (*p == '\0')
continue;
if (cbuf[0] == '\0' ||
(strchr(cbuf, '.') == NULL && strchr(p, '.') != NULL))
{
(void) sm_strlcpy(cbuf, p, cbuflen);
}
if (sm_strcasecmp(name, p) == 0)
found = true;
else if (dot != NULL)
{
/* try looking for the FQDN as well */
*dot = '.';
if (sm_strcasecmp(name, p) == 0)
found = true;
*dot = '\0';
}
}
if (found && strchr(cbuf, '.') == NULL)
{
/* try to add a domain on the end of the name */
char *domain = macvalue('m', CurEnv);
if (domain != NULL &&
strlen(domain) + (i = strlen(cbuf)) + 1 < (size_t) cbuflen)
{
p = &cbuf[i];
*p++ = '.';
(void) sm_strlcpy(p, domain, cbuflen - i - 1);
}
}
return found;
}
/*
** DNS modules
*/
#if NAMED_BIND
# if DNSMAP
# include "sm_resolve.h"
# if NETINET || NETINET6
# include <arpa/inet.h>
# endif /* NETINET || NETINET6 */
/*
** DNS_MAP_OPEN -- stub to check proper value for dns map type
*/
bool
dns_map_open(map, mode)
MAP *map;
int mode;
{
if (tTd(38,2))
sm_dprintf("dns_map_open(%s, %d)\n", map->map_mname, mode);
mode &= O_ACCMODE;
if (mode != O_RDONLY)
{
/* issue a pseudo-error message */
errno = SM_EMAPCANTWRITE;
return false;
}
return true;
}
/*
** DNS_MAP_PARSEARGS -- parse dns map definition args.
**
** Parameters:
** map -- pointer to MAP
** args -- pointer to the args on the config line.
**
** Returns:
** true -- if everything parsed OK.
** false -- otherwise.
*/
#define map_sizelimit map_lockfd /* overload field */
struct dns_map
{
int dns_m_type;
};
bool
dns_map_parseargs(map,args)
MAP *map;
char *args;
{
register char *p = args;
struct dns_map *map_p;
map_p = (struct dns_map *) xalloc(sizeof(*map_p));
map_p->dns_m_type = -1;
map->map_mflags |= MF_TRY0NULL|MF_TRY1NULL;
for (;;)
{
while (isascii(*p) && isspace(*p))
p++;
if (*p != '-')
break;
switch (*++p)
{
case 'N':
map->map_mflags |= MF_INCLNULL;
map->map_mflags &= ~MF_TRY0NULL;
break;
case 'O':
map->map_mflags &= ~MF_TRY1NULL;
break;
case 'o':
map->map_mflags |= MF_OPTIONAL;
break;
case 'f':
map->map_mflags |= MF_NOFOLDCASE;
break;
case 'm':
map->map_mflags |= MF_MATCHONLY;
break;
case 'A':
map->map_mflags |= MF_APPEND;
break;
case 'q':
map->map_mflags |= MF_KEEPQUOTES;
break;
case 't':
map->map_mflags |= MF_NODEFER;
break;
case 'a':
map->map_app = ++p;
break;
case 'T':
map->map_tapp = ++p;
break;
case 'd':
{
char *h;
++p;
h = strchr(p, ' ');
if (h != NULL)
*h = '\0';
map->map_timeout = convtime(p, 's');
if (h != NULL)
*h = ' ';
}
break;
case 'r':
while (isascii(*++p) && isspace(*p))
continue;
map->map_retry = atoi(p);
break;
case 'z':
if (*++p != '\\')
map->map_coldelim = *p;
else
{
switch (*++p)
{
case 'n':
map->map_coldelim = '\n';
break;
case 't':
map->map_coldelim = '\t';
break;
default:
map->map_coldelim = '\\';
}
}
break;
case 'Z':
while (isascii(*++p) && isspace(*p))
continue;
map->map_sizelimit = atoi(p);
break;
/* Start of dns_map specific args */
case 'R': /* search field */
{
char *h;
while (isascii(*++p) && isspace(*p))
continue;
h = strchr(p, ' ');
if (h != NULL)
*h = '\0';
map_p->dns_m_type = dns_string_to_type(p);
if (h != NULL)
*h = ' ';
if (map_p->dns_m_type < 0)
syserr("dns map %s: wrong type %s",
map->map_mname, p);
}
break;
case 'B': /* base domain */
{
char *h;
while (isascii(*++p) && isspace(*p))
continue;
h = strchr(p, ' ');
if (h != NULL)
*h = '\0';
/*
** slight abuse of map->map_file; it isn't
** used otherwise in this map type.
*/
map->map_file = newstr(p);
if (h != NULL)
*h = ' ';
}
break;
}
while (*p != '\0' && !(isascii(*p) && isspace(*p)))
p++;
if (*p != '\0')
*p++ = '\0';
}
if (map_p->dns_m_type < 0)
syserr("dns map %s: missing -R type", map->map_mname);
if (map->map_app != NULL)
map->map_app = newstr(map->map_app);
if (map->map_tapp != NULL)
map->map_tapp = newstr(map->map_tapp);
/*
** Assumption: assert(sizeof(int) <= sizeof(ARBPTR_T));
** Even if this assumption is wrong, we use only one byte,
** so it doesn't really matter.
*/
map->map_db1 = (ARBPTR_T) map_p;
return true;
}
/*
** DNS_MAP_LOOKUP -- perform dns map lookup.
**
** Parameters:
** map -- pointer to MAP
** name -- name to lookup
** av -- arguments to interpolate into buf.
** statp -- pointer to status (EX_)
**
** Returns:
** result of lookup if succeeded.
** NULL -- otherwise.
*/
char *
dns_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
int resnum = 0;
char *vp = NULL, *result = NULL;
size_t vsize;
struct dns_map *map_p;
RESOURCE_RECORD_T *rr = NULL;
DNS_REPLY_T *r = NULL;
# if NETINET6
static char buf6[INET6_ADDRSTRLEN];
# endif /* NETINET6 */
if (tTd(38, 20))
sm_dprintf("dns_map_lookup(%s, %s)\n",
map->map_mname, name);
map_p = (struct dns_map *)(map->map_db1);
if (map->map_file != NULL && *map->map_file != '\0')
{
size_t len;
char *appdomain;
len = strlen(map->map_file) + strlen(name) + 2;
appdomain = (char *) sm_malloc(len);
if (appdomain == NULL)
{
*statp = EX_UNAVAILABLE;
return NULL;
}
(void) sm_strlcpyn(appdomain, len, 3, name, ".", map->map_file);
r = dns_lookup_int(appdomain, C_IN, map_p->dns_m_type,
map->map_timeout, map->map_retry);
sm_free(appdomain);
}
else
{
r = dns_lookup_int(name, C_IN, map_p->dns_m_type,
map->map_timeout, map->map_retry);
}
if (r == NULL)
{
result = NULL;
if (h_errno == TRY_AGAIN || transienterror(errno))
*statp = EX_TEMPFAIL;
else
*statp = EX_NOTFOUND;
goto cleanup;
}
*statp = EX_OK;
for (rr = r->dns_r_head; rr != NULL; rr = rr->rr_next)
{
char *type = NULL;
char *value = NULL;
switch (rr->rr_type)
{
case T_NS:
type = "T_NS";
value = rr->rr_u.rr_txt;
break;
case T_CNAME:
type = "T_CNAME";
value = rr->rr_u.rr_txt;
break;
case T_AFSDB:
type = "T_AFSDB";
value = rr->rr_u.rr_mx->mx_r_domain;
break;
case T_SRV:
type = "T_SRV";
value = rr->rr_u.rr_srv->srv_r_target;
break;
case T_PTR:
type = "T_PTR";
value = rr->rr_u.rr_txt;
break;
case T_TXT:
type = "T_TXT";
value = rr->rr_u.rr_txt;
break;
case T_MX:
type = "T_MX";
value = rr->rr_u.rr_mx->mx_r_domain;
break;
# if NETINET
case T_A:
type = "T_A";
value = inet_ntoa(*(rr->rr_u.rr_a));
break;
# endif /* NETINET */
# if NETINET6
case T_AAAA:
type = "T_AAAA";
value = anynet_ntop(rr->rr_u.rr_aaaa, buf6,
sizeof(buf6));
break;
# endif /* NETINET6 */
}
(void) strreplnonprt(value, 'X');
if (map_p->dns_m_type != rr->rr_type)
{
if (tTd(38, 40))
sm_dprintf("\tskipping type %s (%d) value %s\n",
type != NULL ? type : "<UNKNOWN>",
rr->rr_type,
value != NULL ? value : "<NO VALUE>");
continue;
}
# if NETINET6
if (rr->rr_type == T_AAAA && value == NULL)
{
result = NULL;
*statp = EX_DATAERR;
if (tTd(38, 40))
sm_dprintf("\tbad T_AAAA conversion\n");
goto cleanup;
}
# endif /* NETINET6 */
if (tTd(38, 40))
sm_dprintf("\tfound type %s (%d) value %s\n",
type != NULL ? type : "<UNKNOWN>",
rr->rr_type,
value != NULL ? value : "<NO VALUE>");
if (value != NULL &&
(map->map_coldelim == '\0' ||
map->map_sizelimit == 1 ||
bitset(MF_MATCHONLY, map->map_mflags)))
{
/* Only care about the first match */
vp = newstr(value);
break;
}
else if (vp == NULL)
{
/* First result */
vp = newstr(value);
}
else
{
/* concatenate the results */
int sz;
char *new;
sz = strlen(vp) + strlen(value) + 2;
new = xalloc(sz);
(void) sm_snprintf(new, sz, "%s%c%s",
vp, map->map_coldelim, value);
sm_free(vp);
vp = new;
if (map->map_sizelimit > 0 &&
++resnum >= map->map_sizelimit)
break;
}
}
if (vp == NULL)
{
result = NULL;
*statp = EX_NOTFOUND;
if (tTd(38, 40))
sm_dprintf("\tno match found\n");
goto cleanup;
}
/* Cleanly truncate for rulesets */
truncate_at_delim(vp, PSBUFSIZE / 2, map->map_coldelim);
vsize = strlen(vp);
if (LogLevel > 9)
sm_syslog(LOG_INFO, CurEnv->e_id, "dns %.100s => %s",
name, vp);
if (bitset(MF_MATCHONLY, map->map_mflags))
result = map_rewrite(map, name, strlen(name), NULL);
else
result = map_rewrite(map, vp, vsize, av);
cleanup:
if (vp != NULL)
sm_free(vp);
if (r != NULL)
dns_free_data(r);
return result;
}
# endif /* DNSMAP */
#endif /* NAMED_BIND */
/*
** NDBM modules
*/
#if NDBM
/*
** NDBM_MAP_OPEN -- DBM-style map open
*/
bool
ndbm_map_open(map, mode)
MAP *map;
int mode;
{
register DBM *dbm;
int save_errno;
int dfd;
int pfd;
long sff;
int ret;
int smode = S_IREAD;
char dirfile[MAXPATHLEN];
char pagfile[MAXPATHLEN];
struct stat st;
struct stat std, stp;
if (tTd(38, 2))
sm_dprintf("ndbm_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
map->map_lockfd = -1;
mode &= O_ACCMODE;
/* do initial file and directory checks */
if (sm_strlcpyn(dirfile, sizeof(dirfile), 2,
map->map_file, ".dir") >= sizeof(dirfile) ||
sm_strlcpyn(pagfile, sizeof(pagfile), 2,
map->map_file, ".pag") >= sizeof(pagfile))
{
errno = 0;
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("dbm map \"%s\": map file %s name too long",
map->map_mname, map->map_file);
return false;
}
sff = SFF_ROOTOK|SFF_REGONLY;
if (mode == O_RDWR)
{
sff |= SFF_CREAT;
if (!bitnset(DBS_WRITEMAPTOSYMLINK, DontBlameSendmail))
sff |= SFF_NOSLINK;
if (!bitnset(DBS_WRITEMAPTOHARDLINK, DontBlameSendmail))
sff |= SFF_NOHLINK;
smode = S_IWRITE;
}
else
{
if (!bitnset(DBS_LINKEDMAPINWRITABLEDIR, DontBlameSendmail))
sff |= SFF_NOWLINK;
}
if (!bitnset(DBS_MAPINUNSAFEDIRPATH, DontBlameSendmail))
sff |= SFF_SAFEDIRPATH;
ret = safefile(dirfile, RunAsUid, RunAsGid, RunAsUserName,
sff, smode, &std);
if (ret == 0)
ret = safefile(pagfile, RunAsUid, RunAsGid, RunAsUserName,
sff, smode, &stp);
if (ret != 0)
{
char *prob = "unsafe";
/* cannot open this map */
if (ret == ENOENT)
prob = "missing";
if (tTd(38, 2))
sm_dprintf("\t%s map file: %d\n", prob, ret);
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("dbm map \"%s\": %s map file %s",
map->map_mname, prob, map->map_file);
return false;
}
if (std.st_mode == ST_MODE_NOFILE)
mode |= O_CREAT|O_EXCL;
# if LOCK_ON_OPEN
if (mode == O_RDONLY)
mode |= O_SHLOCK;
else
mode |= O_TRUNC|O_EXLOCK;
# else /* LOCK_ON_OPEN */
if ((mode & O_ACCMODE) == O_RDWR)
{
# if NOFTRUNCATE
/*
** Warning: race condition. Try to lock the file as
** quickly as possible after opening it.
** This may also have security problems on some systems,
** but there isn't anything we can do about it.
*/
mode |= O_TRUNC;
# else /* NOFTRUNCATE */
/*
** This ugly code opens the map without truncating it,
** locks the file, then truncates it. Necessary to
** avoid race conditions.
*/
int dirfd;
int pagfd;
long sff = SFF_CREAT|SFF_OPENASROOT;
if (!bitnset(DBS_WRITEMAPTOSYMLINK, DontBlameSendmail))
sff |= SFF_NOSLINK;
if (!bitnset(DBS_WRITEMAPTOHARDLINK, DontBlameSendmail))
sff |= SFF_NOHLINK;
dirfd = safeopen(dirfile, mode, DBMMODE, sff);
pagfd = safeopen(pagfile, mode, DBMMODE, sff);
if (dirfd < 0 || pagfd < 0)
{
save_errno = errno;
if (dirfd >= 0)
(void) close(dirfd);
if (pagfd >= 0)
(void) close(pagfd);
errno = save_errno;
syserr("ndbm_map_open: cannot create database %s",
map->map_file);
return false;
}
if (ftruncate(dirfd, (off_t) 0) < 0 ||
ftruncate(pagfd, (off_t) 0) < 0)
{
save_errno = errno;
(void) close(dirfd);
(void) close(pagfd);
errno = save_errno;
syserr("ndbm_map_open: cannot truncate %s.{dir,pag}",
map->map_file);
return false;
}
/* if new file, get "before" bits for later filechanged check */
if (std.st_mode == ST_MODE_NOFILE &&
(fstat(dirfd, &std) < 0 || fstat(pagfd, &stp) < 0))
{
save_errno = errno;
(void) close(dirfd);
(void) close(pagfd);
errno = save_errno;
syserr("ndbm_map_open(%s.{dir,pag}): cannot fstat pre-opened file",
map->map_file);
return false;
}
/* have to save the lock for the duration (bletch) */
map->map_lockfd = dirfd;
(void) close(pagfd);
/* twiddle bits for dbm_open */
mode &= ~(O_CREAT|O_EXCL);
# endif /* NOFTRUNCATE */
}
# endif /* LOCK_ON_OPEN */
/* open the database */
dbm = dbm_open(map->map_file, mode, DBMMODE);
if (dbm == NULL)
{
save_errno = errno;
if (bitset(MF_ALIAS, map->map_mflags) &&
aliaswait(map, ".pag", false))
return true;
# if !LOCK_ON_OPEN && !NOFTRUNCATE
if (map->map_lockfd >= 0)
(void) close(map->map_lockfd);
# endif /* !LOCK_ON_OPEN && !NOFTRUNCATE */
errno = save_errno;
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("Cannot open DBM database %s", map->map_file);
return false;
}
dfd = dbm_dirfno(dbm);
pfd = dbm_pagfno(dbm);
if (dfd == pfd)
{
/* heuristic: if files are linked, this is actually gdbm */
dbm_close(dbm);
# if !LOCK_ON_OPEN && !NOFTRUNCATE
if (map->map_lockfd >= 0)
(void) close(map->map_lockfd);
# endif /* !LOCK_ON_OPEN && !NOFTRUNCATE */
errno = 0;
syserr("dbm map \"%s\": cannot support GDBM",
map->map_mname);
return false;
}
if (filechanged(dirfile, dfd, &std) ||
filechanged(pagfile, pfd, &stp))
{
save_errno = errno;
dbm_close(dbm);
# if !LOCK_ON_OPEN && !NOFTRUNCATE
if (map->map_lockfd >= 0)
(void) close(map->map_lockfd);
# endif /* !LOCK_ON_OPEN && !NOFTRUNCATE */
errno = save_errno;
syserr("ndbm_map_open(%s): file changed after open",
map->map_file);
return false;
}
map->map_db1 = (ARBPTR_T) dbm;
/*
** Need to set map_mtime before the call to aliaswait()
** as aliaswait() will call map_lookup() which requires
** map_mtime to be set
*/
if (fstat(pfd, &st) >= 0)
map->map_mtime = st.st_mtime;
if (mode == O_RDONLY)
{
# if LOCK_ON_OPEN
if (dfd >= 0)
(void) lockfile(dfd, map->map_file, ".dir", LOCK_UN);
if (pfd >= 0)
(void) lockfile(pfd, map->map_file, ".pag", LOCK_UN);
# endif /* LOCK_ON_OPEN */
if (bitset(MF_ALIAS, map->map_mflags) &&
!aliaswait(map, ".pag", true))
return false;
}
else
{
map->map_mflags |= MF_LOCKED;
if (geteuid() == 0 && TrustedUid != 0)
{
# if HASFCHOWN
if (fchown(dfd, TrustedUid, -1) < 0 ||
fchown(pfd, TrustedUid, -1) < 0)
{
int err = errno;
sm_syslog(LOG_ALERT, NOQID,
"ownership change on %s failed: %s",
map->map_file, sm_errstring(err));
message("050 ownership change on %s failed: %s",
map->map_file, sm_errstring(err));
}
# else /* HASFCHOWN */
sm_syslog(LOG_ALERT, NOQID,
"no fchown(): cannot change ownership on %s",
map->map_file);
message("050 no fchown(): cannot change ownership on %s",
map->map_file);
# endif /* HASFCHOWN */
}
}
return true;
}
/*
** NDBM_MAP_LOOKUP -- look up a datum in a DBM-type map
*/
char *
ndbm_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
datum key, val;
int dfd, pfd;
char keybuf[MAXNAME + 1];
struct stat stbuf;
if (tTd(38, 20))
sm_dprintf("ndbm_map_lookup(%s, %s)\n",
map->map_mname, name);
key.dptr = name;
key.dsize = strlen(name);
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
{
if (key.dsize > sizeof(keybuf) - 1)
key.dsize = sizeof(keybuf) - 1;
memmove(keybuf, key.dptr, key.dsize);
keybuf[key.dsize] = '\0';
makelower(keybuf);
key.dptr = keybuf;
}
lockdbm:
dfd = dbm_dirfno((DBM *) map->map_db1);
if (dfd >= 0 && !bitset(MF_LOCKED, map->map_mflags))
(void) lockfile(dfd, map->map_file, ".dir", LOCK_SH);
pfd = dbm_pagfno((DBM *) map->map_db1);
if (pfd < 0 || fstat(pfd, &stbuf) < 0 ||
stbuf.st_mtime > map->map_mtime)
{
/* Reopen the database to sync the cache */
int omode = bitset(map->map_mflags, MF_WRITABLE) ? O_RDWR
: O_RDONLY;
if (dfd >= 0 && !bitset(MF_LOCKED, map->map_mflags))
(void) lockfile(dfd, map->map_file, ".dir", LOCK_UN);
map->map_mflags |= MF_CLOSING;
map->map_class->map_close(map);
map->map_mflags &= ~(MF_OPEN|MF_WRITABLE|MF_CLOSING);
if (map->map_class->map_open(map, omode))
{
map->map_mflags |= MF_OPEN;
map->map_pid = CurrentPid;
if ((omode & O_ACCMODE) == O_RDWR)
map->map_mflags |= MF_WRITABLE;
goto lockdbm;
}
else
{
if (!bitset(MF_OPTIONAL, map->map_mflags))
{
extern MAPCLASS BogusMapClass;
*statp = EX_TEMPFAIL;
map->map_orgclass = map->map_class;
map->map_class = &BogusMapClass;
map->map_mflags |= MF_OPEN;
map->map_pid = CurrentPid;
syserr("Cannot reopen NDBM database %s",
map->map_file);
}
return NULL;
}
}
val.dptr = NULL;
if (bitset(MF_TRY0NULL, map->map_mflags))
{
val = dbm_fetch((DBM *) map->map_db1, key);
if (val.dptr != NULL)
map->map_mflags &= ~MF_TRY1NULL;
}
if (val.dptr == NULL && bitset(MF_TRY1NULL, map->map_mflags))
{
key.dsize++;
val = dbm_fetch((DBM *) map->map_db1, key);
if (val.dptr != NULL)
map->map_mflags &= ~MF_TRY0NULL;
}
if (dfd >= 0 && !bitset(MF_LOCKED, map->map_mflags))
(void) lockfile(dfd, map->map_file, ".dir", LOCK_UN);
if (val.dptr == NULL)
return NULL;
if (bitset(MF_MATCHONLY, map->map_mflags))
return map_rewrite(map, name, strlen(name), NULL);
else
return map_rewrite(map, val.dptr, val.dsize, av);
}
/*
** NDBM_MAP_STORE -- store a datum in the database
*/
void
ndbm_map_store(map, lhs, rhs)
register MAP *map;
char *lhs;
char *rhs;
{
datum key;
datum data;
int status;
char keybuf[MAXNAME + 1];
if (tTd(38, 12))
sm_dprintf("ndbm_map_store(%s, %s, %s)\n",
map->map_mname, lhs, rhs);
key.dsize = strlen(lhs);
key.dptr = lhs;
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
{
if (key.dsize > sizeof(keybuf) - 1)
key.dsize = sizeof(keybuf) - 1;
memmove(keybuf, key.dptr, key.dsize);
keybuf[key.dsize] = '\0';
makelower(keybuf);
key.dptr = keybuf;
}
data.dsize = strlen(rhs);
data.dptr = rhs;
if (bitset(MF_INCLNULL, map->map_mflags))
{
key.dsize++;
data.dsize++;
}
status = dbm_store((DBM *) map->map_db1, key, data, DBM_INSERT);
if (status > 0)
{
if (!bitset(MF_APPEND, map->map_mflags))
message("050 Warning: duplicate alias name %s", lhs);
else
{
static char *buf = NULL;
static int bufsiz = 0;
auto int xstat;
datum old;
old.dptr = ndbm_map_lookup(map, key.dptr,
(char **) NULL, &xstat);
if (old.dptr != NULL && *(char *) old.dptr != '\0')
{
old.dsize = strlen(old.dptr);
if (data.dsize + old.dsize + 2 > bufsiz)
{
if (buf != NULL)
(void) sm_free(buf);
bufsiz = data.dsize + old.dsize + 2;
buf = sm_pmalloc_x(bufsiz);
}
(void) sm_strlcpyn(buf, bufsiz, 3,
data.dptr, ",", old.dptr);
data.dsize = data.dsize + old.dsize + 1;
data.dptr = buf;
if (tTd(38, 9))
sm_dprintf("ndbm_map_store append=%s\n",
data.dptr);
}
}
status = dbm_store((DBM *) map->map_db1,
key, data, DBM_REPLACE);
}
if (status != 0)
syserr("readaliases: dbm put (%s): %d", lhs, status);
}
/*
** NDBM_MAP_CLOSE -- close the database
*/
void
ndbm_map_close(map)
register MAP *map;
{
if (tTd(38, 9))
sm_dprintf("ndbm_map_close(%s, %s, %lx)\n",
map->map_mname, map->map_file, map->map_mflags);
if (bitset(MF_WRITABLE, map->map_mflags))
{
# ifdef NDBM_YP_COMPAT
bool inclnull;
char buf[MAXHOSTNAMELEN];
inclnull = bitset(MF_INCLNULL, map->map_mflags);
map->map_mflags &= ~MF_INCLNULL;
if (strstr(map->map_file, "/yp/") != NULL)
{
long save_mflags = map->map_mflags;
map->map_mflags |= MF_NOFOLDCASE;
(void) sm_snprintf(buf, sizeof(buf), "%010ld", curtime());
ndbm_map_store(map, "YP_LAST_MODIFIED", buf);
(void) gethostname(buf, sizeof(buf));
ndbm_map_store(map, "YP_MASTER_NAME", buf);
map->map_mflags = save_mflags;
}
if (inclnull)
map->map_mflags |= MF_INCLNULL;
# endif /* NDBM_YP_COMPAT */
/* write out the distinguished alias */
ndbm_map_store(map, "@", "@");
}
dbm_close((DBM *) map->map_db1);
/* release lock (if needed) */
# if !LOCK_ON_OPEN
if (map->map_lockfd >= 0)
(void) close(map->map_lockfd);
# endif /* !LOCK_ON_OPEN */
}
#endif /* NDBM */
/*
** NEWDB (Hash and BTree) Modules
*/
#if NEWDB
/*
** BT_MAP_OPEN, HASH_MAP_OPEN -- database open primitives.
**
** These do rather bizarre locking. If you can lock on open,
** do that to avoid the condition of opening a database that
** is being rebuilt. If you don't, we'll try to fake it, but
** there will be a race condition. If opening for read-only,
** we immediately release the lock to avoid freezing things up.
** We really ought to hold the lock, but guarantee that we won't
** be pokey about it. That's hard to do.
*/
/* these should be K line arguments */
# if DB_VERSION_MAJOR < 2
# define db_cachesize cachesize
# define h_nelem nelem
# ifndef DB_CACHE_SIZE
# define DB_CACHE_SIZE (1024 * 1024) /* database memory cache size */
# endif /* ! DB_CACHE_SIZE */
# ifndef DB_HASH_NELEM
# define DB_HASH_NELEM 4096 /* (starting) size of hash table */
# endif /* ! DB_HASH_NELEM */
# endif /* DB_VERSION_MAJOR < 2 */
bool
bt_map_open(map, mode)
MAP *map;
int mode;
{
# if DB_VERSION_MAJOR < 2
BTREEINFO btinfo;
# endif /* DB_VERSION_MAJOR < 2 */
# if DB_VERSION_MAJOR == 2
DB_INFO btinfo;
# endif /* DB_VERSION_MAJOR == 2 */
# if DB_VERSION_MAJOR > 2
void *btinfo = NULL;
# endif /* DB_VERSION_MAJOR > 2 */
if (tTd(38, 2))
sm_dprintf("bt_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
# if DB_VERSION_MAJOR < 3
memset(&btinfo, '\0', sizeof(btinfo));
# ifdef DB_CACHE_SIZE
btinfo.db_cachesize = DB_CACHE_SIZE;
# endif /* DB_CACHE_SIZE */
# endif /* DB_VERSION_MAJOR < 3 */
return db_map_open(map, mode, "btree", DB_BTREE, &btinfo);
}
bool
hash_map_open(map, mode)
MAP *map;
int mode;
{
# if DB_VERSION_MAJOR < 2
HASHINFO hinfo;
# endif /* DB_VERSION_MAJOR < 2 */
# if DB_VERSION_MAJOR == 2
DB_INFO hinfo;
# endif /* DB_VERSION_MAJOR == 2 */
# if DB_VERSION_MAJOR > 2
void *hinfo = NULL;
# endif /* DB_VERSION_MAJOR > 2 */
if (tTd(38, 2))
sm_dprintf("hash_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
# if DB_VERSION_MAJOR < 3
memset(&hinfo, '\0', sizeof(hinfo));
# ifdef DB_HASH_NELEM
hinfo.h_nelem = DB_HASH_NELEM;
# endif /* DB_HASH_NELEM */
# ifdef DB_CACHE_SIZE
hinfo.db_cachesize = DB_CACHE_SIZE;
# endif /* DB_CACHE_SIZE */
# endif /* DB_VERSION_MAJOR < 3 */
return db_map_open(map, mode, "hash", DB_HASH, &hinfo);
}
static bool
db_map_open(map, mode, mapclassname, dbtype, openinfo)
MAP *map;
int mode;
char *mapclassname;
DBTYPE dbtype;
# if DB_VERSION_MAJOR < 2
const void *openinfo;
# endif /* DB_VERSION_MAJOR < 2 */
# if DB_VERSION_MAJOR == 2
DB_INFO *openinfo;
# endif /* DB_VERSION_MAJOR == 2 */
# if DB_VERSION_MAJOR > 2
void **openinfo;
# endif /* DB_VERSION_MAJOR > 2 */
{
DB *db = NULL;
int i;
int omode;
int smode = S_IREAD;
int fd;
long sff;
int save_errno;
struct stat st;
char buf[MAXPATHLEN];
/* do initial file and directory checks */
if (sm_strlcpy(buf, map->map_file, sizeof(buf)) >= sizeof(buf))
{
errno = 0;
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("map \"%s\": map file %s name too long",
map->map_mname, map->map_file);
return false;
}
i = strlen(buf);
if (i < 3 || strcmp(&buf[i - 3], ".db") != 0)
{
if (sm_strlcat(buf, ".db", sizeof(buf)) >= sizeof(buf))
{
errno = 0;
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("map \"%s\": map file %s name too long",
map->map_mname, map->map_file);
return false;
}
}
mode &= O_ACCMODE;
omode = mode;
sff = SFF_ROOTOK|SFF_REGONLY;
if (mode == O_RDWR)
{
sff |= SFF_CREAT;
if (!bitnset(DBS_WRITEMAPTOSYMLINK, DontBlameSendmail))
sff |= SFF_NOSLINK;
if (!bitnset(DBS_WRITEMAPTOHARDLINK, DontBlameSendmail))
sff |= SFF_NOHLINK;
smode = S_IWRITE;
}
else
{
if (!bitnset(DBS_LINKEDMAPINWRITABLEDIR, DontBlameSendmail))
sff |= SFF_NOWLINK;
}
if (!bitnset(DBS_MAPINUNSAFEDIRPATH, DontBlameSendmail))
sff |= SFF_SAFEDIRPATH;
i = safefile(buf, RunAsUid, RunAsGid, RunAsUserName, sff, smode, &st);
if (i != 0)
{
char *prob = "unsafe";
/* cannot open this map */
if (i == ENOENT)
prob = "missing";
if (tTd(38, 2))
sm_dprintf("\t%s map file: %s\n", prob, sm_errstring(i));
errno = i;
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("%s map \"%s\": %s map file %s",
mapclassname, map->map_mname, prob, buf);
return false;
}
if (st.st_mode == ST_MODE_NOFILE)
omode |= O_CREAT|O_EXCL;
map->map_lockfd = -1;
# if LOCK_ON_OPEN
if (mode == O_RDWR)
omode |= O_TRUNC|O_EXLOCK;
else
omode |= O_SHLOCK;
# else /* LOCK_ON_OPEN */
/*
** Pre-lock the file to avoid race conditions. In particular,
** since dbopen returns NULL if the file is zero length, we
** must have a locked instance around the dbopen.
*/
fd = open(buf, omode, DBMMODE);
if (fd < 0)
{
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("db_map_open: cannot pre-open database %s", buf);
return false;
}
/* make sure no baddies slipped in just before the open... */
if (filechanged(buf, fd, &st))
{
save_errno = errno;
(void) close(fd);
errno = save_errno;
syserr("db_map_open(%s): file changed after pre-open", buf);
return false;
}
/* if new file, get the "before" bits for later filechanged check */
if (st.st_mode == ST_MODE_NOFILE && fstat(fd, &st) < 0)
{
save_errno = errno;
(void) close(fd);
errno = save_errno;
syserr("db_map_open(%s): cannot fstat pre-opened file",
buf);
return false;
}
/* actually lock the pre-opened file */
if (!lockfile(fd, buf, NULL, mode == O_RDONLY ? LOCK_SH : LOCK_EX))
syserr("db_map_open: cannot lock %s", buf);
/* set up mode bits for dbopen */
if (mode == O_RDWR)
omode |= O_TRUNC;
omode &= ~(O_EXCL|O_CREAT);
# endif /* LOCK_ON_OPEN */
# if DB_VERSION_MAJOR < 2
db = dbopen(buf, omode, DBMMODE, dbtype, openinfo);
# else /* DB_VERSION_MAJOR < 2 */
{
int flags = 0;
# if DB_VERSION_MAJOR > 2
int ret;
# endif /* DB_VERSION_MAJOR > 2 */
if (mode == O_RDONLY)
flags |= DB_RDONLY;
if (bitset(O_CREAT, omode))
flags |= DB_CREATE;
if (bitset(O_TRUNC, omode))
flags |= DB_TRUNCATE;
SM_DB_FLAG_ADD(flags);
# if DB_VERSION_MAJOR > 2
ret = db_create(&db, NULL, 0);
# ifdef DB_CACHE_SIZE
if (ret == 0 && db != NULL)
{
ret = db->set_cachesize(db, 0, DB_CACHE_SIZE, 0);
if (ret != 0)
{
(void) db->close(db, 0);
db = NULL;
}
}
# endif /* DB_CACHE_SIZE */
# ifdef DB_HASH_NELEM
if (dbtype == DB_HASH && ret == 0 && db != NULL)
{
ret = db->set_h_nelem(db, DB_HASH_NELEM);
if (ret != 0)
{
(void) db->close(db, 0);
db = NULL;
}
}
# endif /* DB_HASH_NELEM */
if (ret == 0 && db != NULL)
{
ret = db->open(db,
DBTXN /* transaction for DB 4.1 */
buf, NULL, dbtype, flags, DBMMODE);
if (ret != 0)
{
#ifdef DB_OLD_VERSION
if (ret == DB_OLD_VERSION)
ret = EINVAL;
#endif /* DB_OLD_VERSION */
(void) db->close(db, 0);
db = NULL;
}
}
errno = ret;
# else /* DB_VERSION_MAJOR > 2 */
errno = db_open(buf, dbtype, flags, DBMMODE,
NULL, openinfo, &db);
# endif /* DB_VERSION_MAJOR > 2 */
}
# endif /* DB_VERSION_MAJOR < 2 */
save_errno = errno;
# if !LOCK_ON_OPEN
if (mode == O_RDWR)
map->map_lockfd = fd;
else
(void) close(fd);
# endif /* !LOCK_ON_OPEN */
if (db == NULL)
{
if (mode == O_RDONLY && bitset(MF_ALIAS, map->map_mflags) &&
aliaswait(map, ".db", false))
return true;
# if !LOCK_ON_OPEN
if (map->map_lockfd >= 0)
(void) close(map->map_lockfd);
# endif /* !LOCK_ON_OPEN */
errno = save_errno;
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("Cannot open %s database %s",
mapclassname, buf);
return false;
}
# if DB_VERSION_MAJOR < 2
fd = db->fd(db);
# else /* DB_VERSION_MAJOR < 2 */
fd = -1;
errno = db->fd(db, &fd);
# endif /* DB_VERSION_MAJOR < 2 */
if (filechanged(buf, fd, &st))
{
save_errno = errno;
# if DB_VERSION_MAJOR < 2
(void) db->close(db);
# else /* DB_VERSION_MAJOR < 2 */
errno = db->close(db, 0);
# endif /* DB_VERSION_MAJOR < 2 */
# if !LOCK_ON_OPEN
if (map->map_lockfd >= 0)
(void) close(map->map_lockfd);
# endif /* !LOCK_ON_OPEN */
errno = save_errno;
syserr("db_map_open(%s): file changed after open", buf);
return false;
}
if (mode == O_RDWR)
map->map_mflags |= MF_LOCKED;
# if LOCK_ON_OPEN
if (fd >= 0 && mode == O_RDONLY)
{
(void) lockfile(fd, buf, NULL, LOCK_UN);
}
# endif /* LOCK_ON_OPEN */
/* try to make sure that at least the database header is on disk */
if (mode == O_RDWR)
{
(void) db->sync(db, 0);
if (geteuid() == 0 && TrustedUid != 0)
{
# if HASFCHOWN
if (fchown(fd, TrustedUid, -1) < 0)
{
int err = errno;
sm_syslog(LOG_ALERT, NOQID,
"ownership change on %s failed: %s",
buf, sm_errstring(err));
message("050 ownership change on %s failed: %s",
buf, sm_errstring(err));
}
# else /* HASFCHOWN */
sm_syslog(LOG_ALERT, NOQID,
"no fchown(): cannot change ownership on %s",
map->map_file);
message("050 no fchown(): cannot change ownership on %s",
map->map_file);
# endif /* HASFCHOWN */
}
}
map->map_db2 = (ARBPTR_T) db;
/*
** Need to set map_mtime before the call to aliaswait()
** as aliaswait() will call map_lookup() which requires
** map_mtime to be set
*/
if (fd >= 0 && fstat(fd, &st) >= 0)
map->map_mtime = st.st_mtime;
if (mode == O_RDONLY && bitset(MF_ALIAS, map->map_mflags) &&
!aliaswait(map, ".db", true))
return false;
return true;
}
/*
** DB_MAP_LOOKUP -- look up a datum in a BTREE- or HASH-type map
*/
char *
db_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
DBT key, val;
register DB *db = (DB *) map->map_db2;
int i;
int st;
int save_errno;
int fd;
struct stat stbuf;
char keybuf[MAXNAME + 1];
char buf[MAXPATHLEN];
memset(&key, '\0', sizeof(key));
memset(&val, '\0', sizeof(val));
if (tTd(38, 20))
sm_dprintf("db_map_lookup(%s, %s)\n",
map->map_mname, name);
if (sm_strlcpy(buf, map->map_file, sizeof(buf)) >= sizeof(buf))
{
errno = 0;
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("map \"%s\": map file %s name too long",
map->map_mname, map->map_file);
return NULL;
}
i = strlen(buf);
if (i > 3 && strcmp(&buf[i - 3], ".db") == 0)
buf[i - 3] = '\0';
key.size = strlen(name);
if (key.size > sizeof(keybuf) - 1)
key.size = sizeof(keybuf) - 1;
key.data = keybuf;
memmove(keybuf, name, key.size);
keybuf[key.size] = '\0';
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
makelower(keybuf);
lockdb:
# if DB_VERSION_MAJOR < 2
fd = db->fd(db);
# else /* DB_VERSION_MAJOR < 2 */
fd = -1;
errno = db->fd(db, &fd);
# endif /* DB_VERSION_MAJOR < 2 */
if (fd >= 0 && !bitset(MF_LOCKED, map->map_mflags))
(void) lockfile(fd, buf, ".db", LOCK_SH);
if (fd < 0 || fstat(fd, &stbuf) < 0 || stbuf.st_mtime > map->map_mtime)
{
/* Reopen the database to sync the cache */
int omode = bitset(map->map_mflags, MF_WRITABLE) ? O_RDWR
: O_RDONLY;
if (fd >= 0 && !bitset(MF_LOCKED, map->map_mflags))
(void) lockfile(fd, buf, ".db", LOCK_UN);
map->map_mflags |= MF_CLOSING;
map->map_class->map_close(map);
map->map_mflags &= ~(MF_OPEN|MF_WRITABLE|MF_CLOSING);
if (map->map_class->map_open(map, omode))
{
map->map_mflags |= MF_OPEN;
map->map_pid = CurrentPid;
if ((omode & O_ACCMODE) == O_RDWR)
map->map_mflags |= MF_WRITABLE;
db = (DB *) map->map_db2;
goto lockdb;
}
else
{
if (!bitset(MF_OPTIONAL, map->map_mflags))
{
extern MAPCLASS BogusMapClass;
*statp = EX_TEMPFAIL;
map->map_orgclass = map->map_class;
map->map_class = &BogusMapClass;
map->map_mflags |= MF_OPEN;
map->map_pid = CurrentPid;
syserr("Cannot reopen DB database %s",
map->map_file);
}
return NULL;
}
}
st = 1;
if (bitset(MF_TRY0NULL, map->map_mflags))
{
# if DB_VERSION_MAJOR < 2
st = db->get(db, &key, &val, 0);
# else /* DB_VERSION_MAJOR < 2 */
errno = db->get(db, NULL, &key, &val, 0);
switch (errno)
{
case DB_NOTFOUND:
case DB_KEYEMPTY:
st = 1;
break;
case 0:
st = 0;
break;
default:
st = -1;
break;
}
# endif /* DB_VERSION_MAJOR < 2 */
if (st == 0)
map->map_mflags &= ~MF_TRY1NULL;
}
if (st != 0 && bitset(MF_TRY1NULL, map->map_mflags))
{
key.size++;
# if DB_VERSION_MAJOR < 2
st = db->get(db, &key, &val, 0);
# else /* DB_VERSION_MAJOR < 2 */
errno = db->get(db, NULL, &key, &val, 0);
switch (errno)
{
case DB_NOTFOUND:
case DB_KEYEMPTY:
st = 1;
break;
case 0:
st = 0;
break;
default:
st = -1;
break;
}
# endif /* DB_VERSION_MAJOR < 2 */
if (st == 0)
map->map_mflags &= ~MF_TRY0NULL;
}
save_errno = errno;
if (fd >= 0 && !bitset(MF_LOCKED, map->map_mflags))
(void) lockfile(fd, buf, ".db", LOCK_UN);
if (st != 0)
{
errno = save_errno;
if (st < 0)
syserr("db_map_lookup: get (%s)", name);
return NULL;
}
if (bitset(MF_MATCHONLY, map->map_mflags))
return map_rewrite(map, name, strlen(name), NULL);
else
return map_rewrite(map, val.data, val.size, av);
}
/*
** DB_MAP_STORE -- store a datum in the NEWDB database
*/
void
db_map_store(map, lhs, rhs)
register MAP *map;
char *lhs;
char *rhs;
{
int status;
DBT key;
DBT data;
register DB *db = map->map_db2;
char keybuf[MAXNAME + 1];
memset(&key, '\0', sizeof(key));
memset(&data, '\0', sizeof(data));
if (tTd(38, 12))
sm_dprintf("db_map_store(%s, %s, %s)\n",
map->map_mname, lhs, rhs);
key.size = strlen(lhs);
key.data = lhs;
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
{
if (key.size > sizeof(keybuf) - 1)
key.size = sizeof(keybuf) - 1;
memmove(keybuf, key.data, key.size);
keybuf[key.size] = '\0';
makelower(keybuf);
key.data = keybuf;
}
data.size = strlen(rhs);
data.data = rhs;
if (bitset(MF_INCLNULL, map->map_mflags))
{
key.size++;
data.size++;
}
# if DB_VERSION_MAJOR < 2
status = db->put(db, &key, &data, R_NOOVERWRITE);
# else /* DB_VERSION_MAJOR < 2 */
errno = db->put(db, NULL, &key, &data, DB_NOOVERWRITE);
switch (errno)
{
case DB_KEYEXIST:
status = 1;
break;
case 0:
status = 0;
break;
default:
status = -1;
break;
}
# endif /* DB_VERSION_MAJOR < 2 */
if (status > 0)
{
if (!bitset(MF_APPEND, map->map_mflags))
message("050 Warning: duplicate alias name %s", lhs);
else
{
static char *buf = NULL;
static int bufsiz = 0;
DBT old;
memset(&old, '\0', sizeof(old));
old.data = db_map_lookup(map, key.data,
(char **) NULL, &status);
if (old.data != NULL)
{
old.size = strlen(old.data);
if (data.size + old.size + 2 > (size_t) bufsiz)
{
if (buf != NULL)
sm_free(buf);
bufsiz = data.size + old.size + 2;
buf = sm_pmalloc_x(bufsiz);
}
(void) sm_strlcpyn(buf, bufsiz, 3,
(char *) data.data, ",",
(char *) old.data);
data.size = data.size + old.size + 1;
data.data = buf;
if (tTd(38, 9))
sm_dprintf("db_map_store append=%s\n",
(char *) data.data);
}
}
# if DB_VERSION_MAJOR < 2
status = db->put(db, &key, &data, 0);
# else /* DB_VERSION_MAJOR < 2 */
status = errno = db->put(db, NULL, &key, &data, 0);
# endif /* DB_VERSION_MAJOR < 2 */
}
if (status != 0)
syserr("readaliases: db put (%s)", lhs);
}
/*
** DB_MAP_CLOSE -- add distinguished entries and close the database
*/
void
db_map_close(map)
MAP *map;
{
register DB *db = map->map_db2;
if (tTd(38, 9))
sm_dprintf("db_map_close(%s, %s, %lx)\n",
map->map_mname, map->map_file, map->map_mflags);
if (bitset(MF_WRITABLE, map->map_mflags))
{
/* write out the distinguished alias */
db_map_store(map, "@", "@");
}
(void) db->sync(db, 0);
# if !LOCK_ON_OPEN
if (map->map_lockfd >= 0)
(void) close(map->map_lockfd);
# endif /* !LOCK_ON_OPEN */
# if DB_VERSION_MAJOR < 2
if (db->close(db) != 0)
# else /* DB_VERSION_MAJOR < 2 */
/*
** Berkeley DB can use internal shared memory
** locking for its memory pool. Closing a map
** opened by another process will interfere
** with the shared memory and locks of the parent
** process leaving things in a bad state.
*/
/*
** If this map was not opened by the current
** process, do not close the map but recover
** the file descriptor.
*/
if (map->map_pid != CurrentPid)
{
int fd = -1;
errno = db->fd(db, &fd);
if (fd >= 0)
(void) close(fd);
return;
}
if ((errno = db->close(db, 0)) != 0)
# endif /* DB_VERSION_MAJOR < 2 */
syserr("db_map_close(%s, %s, %lx): db close failure",
map->map_mname, map->map_file, map->map_mflags);
}
#endif /* NEWDB */
/*
** NIS Modules
*/
#if NIS
# ifndef YPERR_BUSY
# define YPERR_BUSY 16
# endif /* ! YPERR_BUSY */
/*
** NIS_MAP_OPEN -- open DBM map
*/
bool
nis_map_open(map, mode)
MAP *map;
int mode;
{
int yperr;
register char *p;
auto char *vp;
auto int vsize;
if (tTd(38, 2))
sm_dprintf("nis_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
mode &= O_ACCMODE;
if (mode != O_RDONLY)
{
/* issue a pseudo-error message */
errno = SM_EMAPCANTWRITE;
return false;
}
p = strchr(map->map_file, '@');
if (p != NULL)
{
*p++ = '\0';
if (*p != '\0')
map->map_domain = p;
}
if (*map->map_file == '\0')
map->map_file = "mail.aliases";
if (map->map_domain == NULL)
{
yperr = yp_get_default_domain(&map->map_domain);
if (yperr != 0)
{
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("451 4.3.5 NIS map %s specified, but NIS not running",
map->map_file);
return false;
}
}
/* check to see if this map actually exists */
vp = NULL;
yperr = yp_match(map->map_domain, map->map_file, "@", 1,
&vp, &vsize);
if (tTd(38, 10))
sm_dprintf("nis_map_open: yp_match(@, %s, %s) => %s\n",
map->map_domain, map->map_file, yperr_string(yperr));
if (vp != NULL)
sm_free(vp);
if (yperr == 0 || yperr == YPERR_KEY || yperr == YPERR_BUSY)
{
/*
** We ought to be calling aliaswait() here if this is an
** alias file, but powerful HP-UX NIS servers apparently
** don't insert the @:@ token into the alias map when it
** is rebuilt, so aliaswait() just hangs. I hate HP-UX.
*/
# if 0
if (!bitset(MF_ALIAS, map->map_mflags) ||
aliaswait(map, NULL, true))
# endif /* 0 */
return true;
}
if (!bitset(MF_OPTIONAL, map->map_mflags))
{
syserr("451 4.3.5 Cannot bind to map %s in domain %s: %s",
map->map_file, map->map_domain, yperr_string(yperr));
}
return false;
}
/*
** NIS_MAP_LOOKUP -- look up a datum in a NIS map
*/
/* ARGSUSED3 */
char *
nis_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
char *vp;
auto int vsize;
int buflen;
int yperr;
char keybuf[MAXNAME + 1];
char *SM_NONVOLATILE result = NULL;
if (tTd(38, 20))
sm_dprintf("nis_map_lookup(%s, %s)\n",
map->map_mname, name);
buflen = strlen(name);
if (buflen > sizeof(keybuf) - 1)
buflen = sizeof(keybuf) - 1;
memmove(keybuf, name, buflen);
keybuf[buflen] = '\0';
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
makelower(keybuf);
yperr = YPERR_KEY;
vp = NULL;
if (bitset(MF_TRY0NULL, map->map_mflags))
{
yperr = yp_match(map->map_domain, map->map_file, keybuf, buflen,
&vp, &vsize);
if (yperr == 0)
map->map_mflags &= ~MF_TRY1NULL;
}
if (yperr == YPERR_KEY && bitset(MF_TRY1NULL, map->map_mflags))
{
SM_FREE_CLR(vp);
buflen++;
yperr = yp_match(map->map_domain, map->map_file, keybuf, buflen,
&vp, &vsize);
if (yperr == 0)
map->map_mflags &= ~MF_TRY0NULL;
}
if (yperr != 0)
{
if (yperr != YPERR_KEY && yperr != YPERR_BUSY)
map->map_mflags &= ~(MF_VALID|MF_OPEN);
if (vp != NULL)
sm_free(vp);
return NULL;
}
SM_TRY
if (bitset(MF_MATCHONLY, map->map_mflags))
result = map_rewrite(map, name, strlen(name), NULL);
else
result = map_rewrite(map, vp, vsize, av);
SM_FINALLY
if (vp != NULL)
sm_free(vp);
SM_END_TRY
return result;
}
/*
** NIS_GETCANONNAME -- look up canonical name in NIS
*/
static bool
nis_getcanonname(name, hbsize, statp)
char *name;
int hbsize;
int *statp;
{
char *vp;
auto int vsize;
int keylen;
int yperr;
static bool try0null = true;
static bool try1null = true;
static char *yp_domain = NULL;
char host_record[MAXLINE];
char cbuf[MAXNAME];
char nbuf[MAXNAME + 1];
if (tTd(38, 20))
sm_dprintf("nis_getcanonname(%s)\n", name);
if (sm_strlcpy(nbuf, name, sizeof(nbuf)) >= sizeof(nbuf))
{
*statp = EX_UNAVAILABLE;
return false;
}
(void) shorten_hostname(nbuf);
keylen = strlen(nbuf);
if (yp_domain == NULL)
(void) yp_get_default_domain(&yp_domain);
makelower(nbuf);
yperr = YPERR_KEY;
vp = NULL;
if (try0null)
{
yperr = yp_match(yp_domain, "hosts.byname", nbuf, keylen,
&vp, &vsize);
if (yperr == 0)
try1null = false;
}
if (yperr == YPERR_KEY && try1null)
{
SM_FREE_CLR(vp);
keylen++;
yperr = yp_match(yp_domain, "hosts.byname", nbuf, keylen,
&vp, &vsize);
if (yperr == 0)
try0null = false;
}
if (yperr != 0)
{
if (yperr == YPERR_KEY)
*statp = EX_NOHOST;
else if (yperr == YPERR_BUSY)
*statp = EX_TEMPFAIL;
else
*statp = EX_UNAVAILABLE;
if (vp != NULL)
sm_free(vp);
return false;
}
(void) sm_strlcpy(host_record, vp, sizeof(host_record));
sm_free(vp);
if (tTd(38, 44))
sm_dprintf("got record `%s'\n", host_record);
vp = strpbrk(host_record, "#\n");
if (vp != NULL)
*vp = '\0';
if (!extract_canonname(nbuf, NULL, host_record, cbuf, sizeof(cbuf)))
{
/* this should not happen, but.... */
*statp = EX_NOHOST;
return false;
}
if (sm_strlcpy(name, cbuf, hbsize) >= hbsize)
{
*statp = EX_UNAVAILABLE;
return false;
}
*statp = EX_OK;
return true;
}
#endif /* NIS */
/*
** NISPLUS Modules
**
** This code donated by Sun Microsystems.
*/
#if NISPLUS
# undef NIS /* symbol conflict in nis.h */
# undef T_UNSPEC /* symbol conflict in nis.h -> ... -> sys/tiuser.h */
# include <rpcsvc/nis.h>
# include <rpcsvc/nislib.h>
# define EN_col(col) zo_data.objdata_u.en_data.en_cols.en_cols_val[(col)].ec_value.ec_value_val
# define COL_NAME(res,i) ((res->objects.objects_val)->TA_data.ta_cols.ta_cols_val)[i].tc_name
# define COL_MAX(res) ((res->objects.objects_val)->TA_data.ta_cols.ta_cols_len)
# define PARTIAL_NAME(x) ((x)[strlen(x) - 1] != '.')
/*
** NISPLUS_MAP_OPEN -- open nisplus table
*/
bool
nisplus_map_open(map, mode)
MAP *map;
int mode;
{
nis_result *res = NULL;
int retry_cnt, max_col, i;
char qbuf[MAXLINE + NIS_MAXNAMELEN];
if (tTd(38, 2))
sm_dprintf("nisplus_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
mode &= O_ACCMODE;
if (mode != O_RDONLY)
{
errno = EPERM;
return false;
}
if (*map->map_file == '\0')
map->map_file = "mail_aliases.org_dir";
if (PARTIAL_NAME(map->map_file) && map->map_domain == NULL)
{
/* set default NISPLUS Domain to $m */
map->map_domain = newstr(nisplus_default_domain());
if (tTd(38, 2))
sm_dprintf("nisplus_map_open(%s): using domain %s\n",
map->map_file, map->map_domain);
}
if (!PARTIAL_NAME(map->map_file))
{
map->map_domain = newstr("");
(void) sm_strlcpy(qbuf, map->map_file, sizeof(qbuf));
}
else
{
/* check to see if this map actually exists */
(void) sm_strlcpyn(qbuf, sizeof(qbuf), 3,
map->map_file, ".", map->map_domain);
}
retry_cnt = 0;
while (res == NULL || res->status != NIS_SUCCESS)
{
res = nis_lookup(qbuf, FOLLOW_LINKS);
switch (res->status)
{
case NIS_SUCCESS:
break;
case NIS_TRYAGAIN:
case NIS_RPCERROR:
case NIS_NAMEUNREACHABLE:
if (retry_cnt++ > 4)
{
errno = EAGAIN;
return false;
}
/* try not to overwhelm hosed server */
sleep(2);
break;
default: /* all other nisplus errors */
# if 0
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("451 4.3.5 Cannot find table %s.%s: %s",
map->map_file, map->map_domain,
nis_sperrno(res->status));
# endif /* 0 */
errno = EAGAIN;
return false;
}
}
if (NIS_RES_NUMOBJ(res) != 1 ||
(NIS_RES_OBJECT(res)->zo_data.zo_type != TABLE_OBJ))
{
if (tTd(38, 10))
sm_dprintf("nisplus_map_open: %s is not a table\n", qbuf);
# if 0
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("451 4.3.5 %s.%s: %s is not a table",
map->map_file, map->map_domain,
nis_sperrno(res->status));
# endif /* 0 */
errno = EBADF;
return false;
}
/* default key column is column 0 */
if (map->map_keycolnm == NULL)
map->map_keycolnm = newstr(COL_NAME(res,0));
max_col = COL_MAX(res);
/* verify the key column exist */
for (i = 0; i < max_col; i++)
{
if (strcmp(map->map_keycolnm, COL_NAME(res,i)) == 0)
break;
}
if (i == max_col)
{
if (tTd(38, 2))
sm_dprintf("nisplus_map_open(%s): can not find key column %s\n",
map->map_file, map->map_keycolnm);
errno = ENOENT;
return false;
}
/* default value column is the last column */
if (map->map_valcolnm == NULL)
{
map->map_valcolno = max_col - 1;
return true;
}
for (i = 0; i< max_col; i++)
{
if (strcmp(map->map_valcolnm, COL_NAME(res,i)) == 0)
{
map->map_valcolno = i;
return true;
}
}
if (tTd(38, 2))
sm_dprintf("nisplus_map_open(%s): can not find column %s\n",
map->map_file, map->map_keycolnm);
errno = ENOENT;
return false;
}
/*
** NISPLUS_MAP_LOOKUP -- look up a datum in a NISPLUS table
*/
char *
nisplus_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
char *p;
auto int vsize;
char *skp;
int skleft;
char search_key[MAXNAME + 4];
char qbuf[MAXLINE + NIS_MAXNAMELEN];
nis_result *result;
if (tTd(38, 20))
sm_dprintf("nisplus_map_lookup(%s, %s)\n",
map->map_mname, name);
if (!bitset(MF_OPEN, map->map_mflags))
{
if (nisplus_map_open(map, O_RDONLY))
{
map->map_mflags |= MF_OPEN;
map->map_pid = CurrentPid;
}
else
{
*statp = EX_UNAVAILABLE;
return NULL;
}
}
/*
** Copy the name to the key buffer, escaping double quote characters
** by doubling them and quoting "]" and "," to avoid having the
** NIS+ parser choke on them.
*/
skleft = sizeof(search_key) - 4;
skp = search_key;
for (p = name; *p != '\0' && skleft > 0; p++)
{
switch (*p)
{
case ']':
case ',':
/* quote the character */
*skp++ = '"';
*skp++ = *p;
*skp++ = '"';
skleft -= 3;
break;
case '"':
/* double the quote */
*skp++ = '"';
skleft--;
/* FALLTHROUGH */
default:
*skp++ = *p;
skleft--;
break;
}
}
*skp = '\0';
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
makelower(search_key);
/* construct the query */
if (PARTIAL_NAME(map->map_file))
(void) sm_snprintf(qbuf, sizeof(qbuf), "[%s=%s],%s.%s",
map->map_keycolnm, search_key, map->map_file,
map->map_domain);
else
(void) sm_snprintf(qbuf, sizeof(qbuf), "[%s=%s],%s",
map->map_keycolnm, search_key, map->map_file);
if (tTd(38, 20))
sm_dprintf("qbuf=%s\n", qbuf);
result = nis_list(qbuf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
if (result->status == NIS_SUCCESS)
{
int count;
char *str;
if ((count = NIS_RES_NUMOBJ(result)) != 1)
{
if (LogLevel > 10)
sm_syslog(LOG_WARNING, CurEnv->e_id,
"%s: lookup error, expected 1 entry, got %d",
map->map_file, count);
/* ignore second entry */
if (tTd(38, 20))
sm_dprintf("nisplus_map_lookup(%s), got %d entries, additional entries ignored\n",
name, count);
}
p = ((NIS_RES_OBJECT(result))->EN_col(map->map_valcolno));
/* set the length of the result */
if (p == NULL)
p = "";
vsize = strlen(p);
if (tTd(38, 20))
sm_dprintf("nisplus_map_lookup(%s), found %s\n",
name, p);
if (bitset(MF_MATCHONLY, map->map_mflags))
str = map_rewrite(map, name, strlen(name), NULL);
else
str = map_rewrite(map, p, vsize, av);
nis_freeresult(result);
*statp = EX_OK;
return str;
}
else
{
if (result->status == NIS_NOTFOUND)
*statp = EX_NOTFOUND;
else if (result->status == NIS_TRYAGAIN)
*statp = EX_TEMPFAIL;
else
{
*statp = EX_UNAVAILABLE;
map->map_mflags &= ~(MF_VALID|MF_OPEN);
}
}
if (tTd(38, 20))
sm_dprintf("nisplus_map_lookup(%s), failed\n", name);
nis_freeresult(result);
return NULL;
}
/*
** NISPLUS_GETCANONNAME -- look up canonical name in NIS+
*/
static bool
nisplus_getcanonname(name, hbsize, statp)
char *name;
int hbsize;
int *statp;
{
char *vp;
auto int vsize;
nis_result *result;
char *p;
char nbuf[MAXNAME + 1];
char qbuf[MAXLINE + NIS_MAXNAMELEN];
if (sm_strlcpy(nbuf, name, sizeof(nbuf)) >= sizeof(nbuf))
{
*statp = EX_UNAVAILABLE;
return false;
}
(void) shorten_hostname(nbuf);
p = strchr(nbuf, '.');
if (p == NULL)
{
/* single token */
(void) sm_snprintf(qbuf, sizeof(qbuf),
"[name=%s],hosts.org_dir", nbuf);
}
else if (p[1] != '\0')
{
/* multi token -- take only first token in nbuf */
*p = '\0';
(void) sm_snprintf(qbuf, sizeof(qbuf),
"[name=%s],hosts.org_dir.%s", nbuf, &p[1]);
}
else
{
*statp = EX_NOHOST;
return false;
}
if (tTd(38, 20))
sm_dprintf("\nnisplus_getcanonname(%s), qbuf=%s\n",
name, qbuf);
result = nis_list(qbuf, EXPAND_NAME|FOLLOW_LINKS|FOLLOW_PATH,
NULL, NULL);
if (result->status == NIS_SUCCESS)
{
int count;
char *domain;
if ((count = NIS_RES_NUMOBJ(result)) != 1)
{
if (LogLevel > 10)
sm_syslog(LOG_WARNING, CurEnv->e_id,
"nisplus_getcanonname: lookup error, expected 1 entry, got %d",
count);
/* ignore second entry */
if (tTd(38, 20))
sm_dprintf("nisplus_getcanonname(%s), got %d entries, all but first ignored\n",
name, count);
}
if (tTd(38, 20))
sm_dprintf("nisplus_getcanonname(%s), found in directory \"%s\"\n",
name, (NIS_RES_OBJECT(result))->zo_domain);
vp = ((NIS_RES_OBJECT(result))->EN_col(0));
vsize = strlen(vp);
if (tTd(38, 20))
sm_dprintf("nisplus_getcanonname(%s), found %s\n",
name, vp);
if (strchr(vp, '.') != NULL)
{
domain = "";
}
else
{
domain = macvalue('m', CurEnv);
if (domain == NULL)
domain = "";
}
if (hbsize > vsize + (int) strlen(domain) + 1)
{
if (domain[0] == '\0')
(void) sm_strlcpy(name, vp, hbsize);
else
(void) sm_snprintf(name, hbsize,
"%s.%s", vp, domain);
*statp = EX_OK;
}
else
*statp = EX_NOHOST;
nis_freeresult(result);
return true;
}
else
{
if (result->status == NIS_NOTFOUND)
*statp = EX_NOHOST;
else if (result->status == NIS_TRYAGAIN)
*statp = EX_TEMPFAIL;
else
*statp = EX_UNAVAILABLE;
}
if (tTd(38, 20))
sm_dprintf("nisplus_getcanonname(%s), failed, status=%d, nsw_stat=%d\n",
name, result->status, *statp);
nis_freeresult(result);
return false;
}
char *
nisplus_default_domain()
{
static char default_domain[MAXNAME + 1] = "";
char *p;
if (default_domain[0] != '\0')
return default_domain;
p = nis_local_directory();
(void) sm_strlcpy(default_domain, p, sizeof(default_domain));
return default_domain;
}
#endif /* NISPLUS */
/*
** LDAP Modules
*/
/*
** LDAPMAP_DEQUOTE - helper routine for ldapmap_parseargs
*/
#if defined(LDAPMAP) || defined(PH_MAP)
# if PH_MAP
# define ph_map_dequote ldapmap_dequote
# endif /* PH_MAP */
static char *ldapmap_dequote __P((char *));
static char *
ldapmap_dequote(str)
char *str;
{
char *p;
char *start;
if (str == NULL)
return NULL;
p = str;
if (*p == '"')
{
/* Should probably swallow initial whitespace here */
start = ++p;
}
else
return str;
while (*p != '"' && *p != '\0')
p++;
if (*p != '\0')
*p = '\0';
return start;
}
#endif /* defined(LDAPMAP) || defined(PH_MAP) */
#if LDAPMAP
static SM_LDAP_STRUCT *LDAPDefaults = NULL;
/*
** LDAPMAP_OPEN -- open LDAP map
**
** Connect to the LDAP server. Re-use existing connections since a
** single server connection to a host (with the same host, port,
** bind DN, and secret) can answer queries for multiple maps.
*/
bool
ldapmap_open(map, mode)
MAP *map;
int mode;
{
SM_LDAP_STRUCT *lmap;
STAB *s;
char *id;
if (tTd(38, 2))
sm_dprintf("ldapmap_open(%s, %d): ", map->map_mname, mode);
#if defined(SUN_EXTENSIONS) && defined(SUN_SIMPLIFIED_LDAP) && \
HASLDAPGETALIASBYNAME
if (VendorCode == VENDOR_SUN &&
strcmp(map->map_mname, "aliases.ldap") == 0)
{
return true;
}
#endif /* defined(SUN_EXTENSIONS) && defined(SUN_SIMPLIFIED_LDAP) && ... */
mode &= O_ACCMODE;
/* sendmail doesn't have the ability to write to LDAP (yet) */
if (mode != O_RDONLY)
{
/* issue a pseudo-error message */
errno = SM_EMAPCANTWRITE;
return false;
}
lmap = (SM_LDAP_STRUCT *) map->map_db1;
s = ldapmap_findconn(lmap);
if (s->s_lmap != NULL)
{
/* Already have a connection open to this LDAP server */
lmap->ldap_ld = ((SM_LDAP_STRUCT *)s->s_lmap->map_db1)->ldap_ld;
lmap->ldap_pid = ((SM_LDAP_STRUCT *)s->s_lmap->map_db1)->ldap_pid;
/* Add this map as head of linked list */
lmap->ldap_next = s->s_lmap;
s->s_lmap = map;
if (tTd(38, 2))
sm_dprintf("using cached connection\n");
return true;
}
if (tTd(38, 2))
sm_dprintf("opening new connection\n");
if (lmap->ldap_host != NULL)
id = lmap->ldap_host;
else if (lmap->ldap_uri != NULL)
id = lmap->ldap_uri;
else
id = "localhost";
if (tTd(74, 104))
{
extern MAPCLASS NullMapClass;
/* debug mode: don't actually open an LDAP connection */
map->map_orgclass = map->map_class;
map->map_class = &NullMapClass;
map->map_mflags |= MF_OPEN;
map->map_pid = CurrentPid;
return true;
}
/* No connection yet, connect */
if (!sm_ldap_start(map->map_mname, lmap))
{
if (errno == ETIMEDOUT)
{
if (LogLevel > 1)
sm_syslog(LOG_NOTICE, CurEnv->e_id,
"timeout conning to LDAP server %.100s",
id);
}
if (!bitset(MF_OPTIONAL, map->map_mflags))
{
if (bitset(MF_NODEFER, map->map_mflags))
{
syserr("%s failed to %s in map %s",
# if USE_LDAP_INIT
"ldap_init/ldap_bind",
# else /* USE_LDAP_INIT */
"ldap_open",
# endif /* USE_LDAP_INIT */
id, map->map_mname);
}
else
{
syserr("451 4.3.5 %s failed to %s in map %s",
# if USE_LDAP_INIT
"ldap_init/ldap_bind",
# else /* USE_LDAP_INIT */
"ldap_open",
# endif /* USE_LDAP_INIT */
id, map->map_mname);
}
}
return false;
}
/* Save connection for reuse */
s->s_lmap = map;
return true;
}
/*
** LDAPMAP_CLOSE -- close ldap map
*/
void
ldapmap_close(map)
MAP *map;
{
SM_LDAP_STRUCT *lmap;
STAB *s;
if (tTd(38, 2))
sm_dprintf("ldapmap_close(%s)\n", map->map_mname);
lmap = (SM_LDAP_STRUCT *) map->map_db1;
/* Check if already closed */
if (lmap->ldap_ld == NULL)
return;
/* Close the LDAP connection */
sm_ldap_close(lmap);
/* Mark all the maps that share the connection as closed */
s = ldapmap_findconn(lmap);
while (s->s_lmap != NULL)
{
MAP *smap = s->s_lmap;
if (tTd(38, 2) && smap != map)
sm_dprintf("ldapmap_close(%s): closed %s (shared LDAP connection)\n",
map->map_mname, smap->map_mname);
smap->map_mflags &= ~(MF_OPEN|MF_WRITABLE);
lmap = (SM_LDAP_STRUCT *) smap->map_db1;
lmap->ldap_ld = NULL;
s->s_lmap = lmap->ldap_next;
lmap->ldap_next = NULL;
}
}
# ifdef SUNET_ID
/*
** SUNET_ID_HASH -- Convert a string to its Sunet_id canonical form
** This only makes sense at Stanford University.
*/
static char *
sunet_id_hash(str)
char *str;
{
char *p, *p_last;
p = str;
p_last = p;
while (*p != '\0')
{
if (isascii(*p) && (islower(*p) || isdigit(*p)))
{
*p_last = *p;
p_last++;
}
else if (isascii(*p) && isupper(*p))
{
*p_last = tolower(*p);
p_last++;
}
++p;
}
if (*p_last != '\0')
*p_last = '\0';
return str;
}
# define SM_CONVERT_ID(str) sunet_id_hash(str)
# else /* SUNET_ID */
# define SM_CONVERT_ID(str) makelower(str)
# endif /* SUNET_ID */
/*
** LDAPMAP_LOOKUP -- look up a datum in a LDAP map
*/
char *
ldapmap_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
int flags;
int i;
int plen = 0;
int psize = 0;
int msgid;
int save_errno;
char *vp, *p;
char *result = NULL;
SM_RPOOL_T *rpool;
SM_LDAP_STRUCT *lmap = NULL;
char *argv[SM_LDAP_ARGS];
char keybuf[MAXKEY];
#if SM_LDAP_ARGS != MAX_MAP_ARGS
# ERROR _SM_LDAP_ARGS must be the same as _MAX_MAP_ARGS
#endif /* SM_LDAP_ARGS != MAX_MAP_ARGS */
#if defined(SUN_EXTENSIONS) && defined(SUN_SIMPLIFIED_LDAP) && \
HASLDAPGETALIASBYNAME
if (VendorCode == VENDOR_SUN &&
strcmp(map->map_mname, "aliases.ldap") == 0)
{
int rc;
#if defined(GETLDAPALIASBYNAME_VERSION) && (GETLDAPALIASBYNAME_VERSION >= 2)
extern char *__getldapaliasbyname();
char *answer;
answer = __getldapaliasbyname(name, &rc);
#else
char answer[MAXNAME + 1];
rc = __getldapaliasbyname(name, answer, sizeof(answer));
#endif
if (rc != 0)
{
if (tTd(38, 20))
sm_dprintf("getldapaliasbyname(%.100s) failed, errno=%d\n",
name, errno);
*statp = EX_NOTFOUND;
return NULL;
}
*statp = EX_OK;
if (tTd(38, 20))
sm_dprintf("getldapaliasbyname(%.100s) => %s\n", name,
answer);
if (bitset(MF_MATCHONLY, map->map_mflags))
result = map_rewrite(map, name, strlen(name), NULL);
else
result = map_rewrite(map, answer, strlen(answer), av);
#if defined(GETLDAPALIASBYNAME_VERSION) && (GETLDAPALIASBYNAME_VERSION >= 2)
free(answer);
#endif
return result;
}
#endif /* defined(SUN_EXTENSIONS) && defined(SUN_SIMPLIFIED_LDAP) && ... */
/* Get ldap struct pointer from map */
lmap = (SM_LDAP_STRUCT *) map->map_db1;
sm_ldap_setopts(lmap->ldap_ld, lmap);
if (lmap->ldap_multi_args)
{
SM_REQUIRE(av != NULL);
memset(argv, '\0', sizeof(argv));
for (i = 0; i < SM_LDAP_ARGS && av[i] != NULL; i++)
{
argv[i] = sm_strdup(av[i]);
if (argv[i] == NULL)
{
int save_errno, j;
save_errno = errno;
for (j = 0; j < i && argv[j] != NULL; j++)
SM_FREE(argv[j]);
*statp = EX_TEMPFAIL;
errno = save_errno;
return NULL;
}
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
SM_CONVERT_ID(av[i]);
}
}
else
{
(void) sm_strlcpy(keybuf, name, sizeof(keybuf));
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
SM_CONVERT_ID(keybuf);
}
if (tTd(38, 20))
{
if (lmap->ldap_multi_args)
{
sm_dprintf("ldapmap_lookup(%s, argv)\n",
map->map_mname);
for (i = 0; i < SM_LDAP_ARGS; i++)
{
sm_dprintf(" argv[%d] = %s\n", i,
argv[i] == NULL ? "NULL" : argv[i]);
}
}
else
{
sm_dprintf("ldapmap_lookup(%s, %s)\n",
map->map_mname, name);
}
}
if (lmap->ldap_multi_args)
{
msgid = sm_ldap_search_m(lmap, argv);
/* free the argv array and its content, no longer needed */
for (i = 0; i < SM_LDAP_ARGS && argv[i] != NULL; i++)
SM_FREE(argv[i]);
}
else
msgid = sm_ldap_search(lmap, keybuf);
if (msgid == SM_LDAP_ERR)
{
errno = sm_ldap_geterrno(lmap->ldap_ld) + E_LDAPBASE;
save_errno = errno;
if (!bitset(MF_OPTIONAL, map->map_mflags))
{
/*
** Do not include keybuf as this error may be shown
** to outsiders.
*/
if (bitset(MF_NODEFER, map->map_mflags))
syserr("Error in ldap_search in map %s",
map->map_mname);
else
syserr("451 4.3.5 Error in ldap_search in map %s",
map->map_mname);
}
*statp = EX_TEMPFAIL;
switch (save_errno - E_LDAPBASE)
{
# ifdef LDAP_SERVER_DOWN
case LDAP_SERVER_DOWN:
# endif /* LDAP_SERVER_DOWN */
case LDAP_TIMEOUT:
case LDAP_UNAVAILABLE:
/* server disappeared, try reopen on next search */
ldapmap_close(map);
break;
}
errno = save_errno;
return NULL;
}
#if SM_LDAP_ERROR_ON_MISSING_ARGS
else if (msgid == SM_LDAP_ERR_ARG_MISS)
{
if (bitset(MF_NODEFER, map->map_mflags))
syserr("Error in ldap_search in map %s, too few arguments",
map->map_mname);
else
syserr("554 5.3.5 Error in ldap_search in map %s, too few arguments",
map->map_mname);
*statp = EX_CONFIG;
return NULL;
}
#endif /* SM_LDAP_ERROR_ON_MISSING_ARGS */
*statp = EX_NOTFOUND;
vp = NULL;
flags = 0;
if (bitset(MF_SINGLEMATCH, map->map_mflags))
flags |= SM_LDAP_SINGLEMATCH;
if (bitset(MF_MATCHONLY, map->map_mflags))
flags |= SM_LDAP_MATCHONLY;
# if _FFR_LDAP_SINGLEDN
if (bitset(MF_SINGLEDN, map->map_mflags))
flags |= SM_LDAP_SINGLEDN;
# endif /* _FFR_LDAP_SINGLEDN */
/* Create an rpool for search related memory usage */
rpool = sm_rpool_new_x(NULL);
p = NULL;
*statp = sm_ldap_results(lmap, msgid, flags, map->map_coldelim,
rpool, &p, &plen, &psize, NULL);
save_errno = errno;
/* Copy result so rpool can be freed */
if (*statp == EX_OK && p != NULL)
vp = newstr(p);
sm_rpool_free(rpool);
/* need to restart LDAP connection? */
if (*statp == EX_RESTART)
{
*statp = EX_TEMPFAIL;
ldapmap_close(map);
}
errno = save_errno;
if (*statp != EX_OK && *statp != EX_NOTFOUND)
{
if (!bitset(MF_OPTIONAL, map->map_mflags))
{
if (bitset(MF_NODEFER, map->map_mflags))
syserr("Error getting LDAP results in map %s",
map->map_mname);
else
syserr("451 4.3.5 Error getting LDAP results in map %s",
map->map_mname);
}
errno = save_errno;
return NULL;
}
/* Did we match anything? */
if (vp == NULL && !bitset(MF_MATCHONLY, map->map_mflags))
return NULL;
if (*statp == EX_OK)
{
if (LogLevel > 9)
sm_syslog(LOG_INFO, CurEnv->e_id,
"ldap %.100s => %s", name,
vp == NULL ? "<NULL>" : vp);
if (bitset(MF_MATCHONLY, map->map_mflags))
result = map_rewrite(map, name, strlen(name), NULL);
else
{
/* vp != NULL according to test above */
result = map_rewrite(map, vp, strlen(vp), av);
}
if (vp != NULL)
sm_free(vp); /* XXX */
}
return result;
}
/*
** LDAPMAP_FINDCONN -- find an LDAP connection to the server
**
** Cache LDAP connections based on the host, port, bind DN,
** secret, and PID so we don't have multiple connections open to
** the same server for different maps. Need a separate connection
** per PID since a parent process may close the map before the
** child is done with it.
**
** Parameters:
** lmap -- LDAP map information
**
** Returns:
** Symbol table entry for the LDAP connection.
*/
static STAB *
ldapmap_findconn(lmap)
SM_LDAP_STRUCT *lmap;
{
char *format;
char *nbuf;
char *id;
STAB *SM_NONVOLATILE s = NULL;
if (lmap->ldap_host != NULL)
id = lmap->ldap_host;
else if (lmap->ldap_uri != NULL)
id = lmap->ldap_uri;
else
id = "localhost";
format = "%s%c%d%c%d%c%s%c%s%d";
nbuf = sm_stringf_x(format,
id,
CONDELSE,
lmap->ldap_port,
CONDELSE,
lmap->ldap_version,
CONDELSE,
(lmap->ldap_binddn == NULL ? ""
: lmap->ldap_binddn),
CONDELSE,
(lmap->ldap_secret == NULL ? ""
: lmap->ldap_secret),
(int) CurrentPid);
SM_TRY
s = stab(nbuf, ST_LMAP, ST_ENTER);
SM_FINALLY
sm_free(nbuf);
SM_END_TRY
return s;
}
/*
** LDAPMAP_PARSEARGS -- parse ldap map definition args.
*/
static struct lamvalues LDAPAuthMethods[] =
{
{ "none", LDAP_AUTH_NONE },
{ "simple", LDAP_AUTH_SIMPLE },
# ifdef LDAP_AUTH_KRBV4
{ "krbv4", LDAP_AUTH_KRBV4 },
# endif /* LDAP_AUTH_KRBV4 */
{ NULL, 0 }
};
static struct ladvalues LDAPAliasDereference[] =
{
{ "never", LDAP_DEREF_NEVER },
{ "always", LDAP_DEREF_ALWAYS },
{ "search", LDAP_DEREF_SEARCHING },
{ "find", LDAP_DEREF_FINDING },
{ NULL, 0 }
};
static struct lssvalues LDAPSearchScope[] =
{
{ "base", LDAP_SCOPE_BASE },
{ "one", LDAP_SCOPE_ONELEVEL },
{ "sub", LDAP_SCOPE_SUBTREE },
{ NULL, 0 }
};
bool
ldapmap_parseargs(map, args)
MAP *map;
char *args;
{
bool secretread = true;
bool attrssetup = false;
int i;
register char *p = args;
SM_LDAP_STRUCT *lmap;
struct lamvalues *lam;
struct ladvalues *lad;
struct lssvalues *lss;
char ldapfilt[MAXLINE];
char m_tmp[MAXPATHLEN + LDAPMAP_MAX_PASSWD];
/* Get ldap struct pointer from map */
lmap = (SM_LDAP_STRUCT *) map->map_db1;
/* Check if setting the initial LDAP defaults */
if (lmap == NULL || lmap != LDAPDefaults)
{
/* We need to alloc an SM_LDAP_STRUCT struct */
lmap = (SM_LDAP_STRUCT *) xalloc(sizeof(*lmap));
if (LDAPDefaults == NULL)
sm_ldap_clear(lmap);
else
STRUCTCOPY(*LDAPDefaults, *lmap);
}
/* there is no check whether there is really an argument */
map->map_mflags |= MF_TRY0NULL|MF_TRY1NULL;
map->map_spacesub = SpaceSub; /* default value */
/* Check if setting up an alias or file class LDAP map */
if (bitset(MF_ALIAS, map->map_mflags))
{
/* Comma separate if used as an alias file */
map->map_coldelim = ',';
if (*args == '\0')
{
int n;
char *lc;
char jbuf[MAXHOSTNAMELEN];
char lcbuf[MAXLINE];
/* Get $j */
expand("\201j", jbuf, sizeof(jbuf), &BlankEnvelope);
if (jbuf[0] == '\0')
{
(void) sm_strlcpy(jbuf, "localhost",
sizeof(jbuf));
}
lc = macvalue(macid("{sendmailMTACluster}"), CurEnv);
if (lc == NULL)
lc = "";
else
{
expand(lc, lcbuf, sizeof(lcbuf), CurEnv);
lc = lcbuf;
}
n = sm_snprintf(ldapfilt, sizeof(ldapfilt),
"(&(objectClass=sendmailMTAAliasObject)(sendmailMTAAliasGrouping=aliases)(|(sendmailMTACluster=%s)(sendmailMTAHost=%s))(sendmailMTAKey=%%0))",
lc, jbuf);
if (n >= sizeof(ldapfilt))
{
syserr("%s: Default LDAP string too long",
map->map_mname);
return false;
}
/* default args for an alias LDAP entry */
lmap->ldap_filter = ldapfilt;
lmap->ldap_attr[0] = "objectClass";
lmap->ldap_attr_type[0] = SM_LDAP_ATTR_OBJCLASS;
lmap->ldap_attr_needobjclass[0] = NULL;
lmap->ldap_attr[1] = "sendmailMTAAliasValue";
lmap->ldap_attr_type[1] = SM_LDAP_ATTR_NORMAL;
lmap->ldap_attr_needobjclass[1] = NULL;
lmap->ldap_attr[2] = "sendmailMTAAliasSearch";
lmap->ldap_attr_type[2] = SM_LDAP_ATTR_FILTER;
lmap->ldap_attr_needobjclass[2] = "sendmailMTAMapObject";
lmap->ldap_attr[3] = "sendmailMTAAliasURL";
lmap->ldap_attr_type[3] = SM_LDAP_ATTR_URL;
lmap->ldap_attr_needobjclass[3] = "sendmailMTAMapObject";
lmap->ldap_attr[4] = NULL;
lmap->ldap_attr_type[4] = SM_LDAP_ATTR_NONE;
lmap->ldap_attr_needobjclass[4] = NULL;
attrssetup = true;
}
}
else if (bitset(MF_FILECLASS, map->map_mflags))
{
/* Space separate if used as a file class file */
map->map_coldelim = ' ';
}
# if _FFR_LDAP_NETWORK_TIMEOUT
lmap->ldap_networktmo = 120;
# endif /* _FFR_LDAP_NETWORK_TIMEOUT */
for (;;)
{
while (isascii(*p) && isspace(*p))
p++;
if (*p != '-')
break;
switch (*++p)
{
case 'A':
map->map_mflags |= MF_APPEND;
break;
case 'a':
map->map_app = ++p;
break;
case 'D':
map->map_mflags |= MF_DEFER;
break;
case 'f':
map->map_mflags |= MF_NOFOLDCASE;
break;
case 'm':
map->map_mflags |= MF_MATCHONLY;
break;
case 'N':
map->map_mflags |= MF_INCLNULL;
map->map_mflags &= ~MF_TRY0NULL;
break;
case 'O':
map->map_mflags &= ~MF_TRY1NULL;
break;
case 'o':
map->map_mflags |= MF_OPTIONAL;
break;
case 'q':
map->map_mflags |= MF_KEEPQUOTES;
break;
case 'S':
map->map_spacesub = *++p;
break;
case 'T':
map->map_tapp = ++p;
break;
case 't':
map->map_mflags |= MF_NODEFER;
break;
case 'z':
if (*++p != '\\')
map->map_coldelim = *p;
else
{
switch (*++p)
{
case 'n':
map->map_coldelim = '\n';
break;
case 't':
map->map_coldelim = '\t';
break;
default:
map->map_coldelim = '\\';
}
}
break;
/* Start of ldapmap specific args */
case '1':
map->map_mflags |= MF_SINGLEMATCH;
break;
# if _FFR_LDAP_SINGLEDN
case '2':
map->map_mflags |= MF_SINGLEDN;
break;
# endif /* _FFR_LDAP_SINGLEDN */
case 'b': /* search base */
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_base = p;
break;
# if _FFR_LDAP_NETWORK_TIMEOUT
case 'c': /* network (connect) timeout */
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_networktmo = atoi(p);
break;
# endif /* _FFR_LDAP_NETWORK_TIMEOUT */
case 'd': /* Dn to bind to server as */
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_binddn = p;
break;
case 'H': /* Use LDAP URI */
# if !USE_LDAP_INIT
syserr("Must compile with -DUSE_LDAP_INIT to use LDAP URIs (-H) in map %s",
map->map_mname);
return false;
# else /* !USE_LDAP_INIT */
if (lmap->ldap_host != NULL)
{
syserr("Can not specify both an LDAP host and an LDAP URI in map %s",
map->map_mname);
return false;
}
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_uri = p;
break;
# endif /* !USE_LDAP_INIT */
case 'h': /* ldap host */
while (isascii(*++p) && isspace(*p))
continue;
if (lmap->ldap_uri != NULL)
{
syserr("Can not specify both an LDAP host and an LDAP URI in map %s",
map->map_mname);
return false;
}
lmap->ldap_host = p;
break;
case 'K':
lmap->ldap_multi_args = true;
break;
case 'k': /* search field */
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_filter = p;
break;
case 'l': /* time limit */
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_timelimit = atoi(p);
lmap->ldap_timeout.tv_sec = lmap->ldap_timelimit;
break;
case 'M': /* Method for binding */
while (isascii(*++p) && isspace(*p))
continue;
if (sm_strncasecmp(p, "LDAP_AUTH_", 10) == 0)
p += 10;
for (lam = LDAPAuthMethods;
lam != NULL && lam->lam_name != NULL; lam++)
{
if (sm_strncasecmp(p, lam->lam_name,
strlen(lam->lam_name)) == 0)
break;
}
if (lam->lam_name != NULL)
lmap->ldap_method = lam->lam_code;
else
{
/* bad config line */
if (!bitset(MCF_OPTFILE,
map->map_class->map_cflags))
{
char *ptr;
if ((ptr = strchr(p, ' ')) != NULL)
*ptr = '\0';
syserr("Method for binding must be [none|simple|krbv4] (not %s) in map %s",
p, map->map_mname);
if (ptr != NULL)
*ptr = ' ';
return false;
}
}
break;
case 'n': /* retrieve attribute names only */
lmap->ldap_attrsonly = LDAPMAP_TRUE;
break;
/*
** This is a string that is dependent on the
** method used defined by 'M'.
*/
case 'P': /* Secret password for binding */
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_secret = p;
secretread = false;
break;
case 'p': /* ldap port */
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_port = atoi(p);
break;
/* args stolen from ldapsearch.c */
case 'R': /* don't auto chase referrals */
# ifdef LDAP_REFERRALS
lmap->ldap_options &= ~LDAP_OPT_REFERRALS;
# else /* LDAP_REFERRALS */
syserr("compile with -DLDAP_REFERRALS for referral support");
# endif /* LDAP_REFERRALS */
break;
case 'r': /* alias dereferencing */
while (isascii(*++p) && isspace(*p))
continue;
if (sm_strncasecmp(p, "LDAP_DEREF_", 11) == 0)
p += 11;
for (lad = LDAPAliasDereference;
lad != NULL && lad->lad_name != NULL; lad++)
{
if (sm_strncasecmp(p, lad->lad_name,
strlen(lad->lad_name)) == 0)
break;
}
if (lad->lad_name != NULL)
lmap->ldap_deref = lad->lad_code;
else
{
/* bad config line */
if (!bitset(MCF_OPTFILE,
map->map_class->map_cflags))
{
char *ptr;
if ((ptr = strchr(p, ' ')) != NULL)
*ptr = '\0';
syserr("Deref must be [never|always|search|find] (not %s) in map %s",
p, map->map_mname);
if (ptr != NULL)
*ptr = ' ';
return false;
}
}
break;
case 's': /* search scope */
while (isascii(*++p) && isspace(*p))
continue;
if (sm_strncasecmp(p, "LDAP_SCOPE_", 11) == 0)
p += 11;
for (lss = LDAPSearchScope;
lss != NULL && lss->lss_name != NULL; lss++)
{
if (sm_strncasecmp(p, lss->lss_name,
strlen(lss->lss_name)) == 0)
break;
}
if (lss->lss_name != NULL)
lmap->ldap_scope = lss->lss_code;
else
{
/* bad config line */
if (!bitset(MCF_OPTFILE,
map->map_class->map_cflags))
{
char *ptr;
if ((ptr = strchr(p, ' ')) != NULL)
*ptr = '\0';
syserr("Scope must be [base|one|sub] (not %s) in map %s",
p, map->map_mname);
if (ptr != NULL)
*ptr = ' ';
return false;
}
}
break;
case 'V':
if (*++p != '\\')
lmap->ldap_attrsep = *p;
else
{
switch (*++p)
{
case 'n':
lmap->ldap_attrsep = '\n';
break;
case 't':
lmap->ldap_attrsep = '\t';
break;
default:
lmap->ldap_attrsep = '\\';
}
}
break;
case 'v': /* attr to return */
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_attr[0] = p;
lmap->ldap_attr[1] = NULL;
break;
case 'w':
/* -w should be for passwd, -P should be for version */
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_version = atoi(p);
# ifdef LDAP_VERSION_MAX
if (lmap->ldap_version > LDAP_VERSION_MAX)
{
syserr("LDAP version %d exceeds max of %d in map %s",
lmap->ldap_version, LDAP_VERSION_MAX,
map->map_mname);
return false;
}
# endif /* LDAP_VERSION_MAX */
# ifdef LDAP_VERSION_MIN
if (lmap->ldap_version < LDAP_VERSION_MIN)
{
syserr("LDAP version %d is lower than min of %d in map %s",
lmap->ldap_version, LDAP_VERSION_MIN,
map->map_mname);
return false;
}
# endif /* LDAP_VERSION_MIN */
break;
case 'Z':
while (isascii(*++p) && isspace(*p))
continue;
lmap->ldap_sizelimit = atoi(p);
break;
default:
syserr("Illegal option %c map %s", *p, map->map_mname);
break;
}
/* need to account for quoted strings here */
while (*p != '\0' && !(isascii(*p) && isspace(*p)))
{
if (*p == '"')
{
while (*++p != '"' && *p != '\0')
continue;
if (*p != '\0')
p++;
}
else
p++;
}
if (*p != '\0')
*p++ = '\0';
}
if (map->map_app != NULL)
map->map_app = newstr(ldapmap_dequote(map->map_app));
if (map->map_tapp != NULL)
map->map_tapp = newstr(ldapmap_dequote(map->map_tapp));
/*
** We need to swallow up all the stuff into a struct
** and dump it into map->map_dbptr1
*/
if (lmap->ldap_host != NULL &&
(LDAPDefaults == NULL ||
LDAPDefaults == lmap ||
LDAPDefaults->ldap_host != lmap->ldap_host))
lmap->ldap_host = newstr(ldapmap_dequote(lmap->ldap_host));
map->map_domain = lmap->ldap_host;
if (lmap->ldap_uri != NULL &&
(LDAPDefaults == NULL ||
LDAPDefaults == lmap ||
LDAPDefaults->ldap_uri != lmap->ldap_uri))
lmap->ldap_uri = newstr(ldapmap_dequote(lmap->ldap_uri));
map->map_domain = lmap->ldap_uri;
if (lmap->ldap_binddn != NULL &&
(LDAPDefaults == NULL ||
LDAPDefaults == lmap ||
LDAPDefaults->ldap_binddn != lmap->ldap_binddn))
lmap->ldap_binddn = newstr(ldapmap_dequote(lmap->ldap_binddn));
if (lmap->ldap_secret != NULL &&
(LDAPDefaults == NULL ||
LDAPDefaults == lmap ||
LDAPDefaults->ldap_secret != lmap->ldap_secret))
{
SM_FILE_T *sfd;
long sff = SFF_OPENASROOT|SFF_ROOTOK|SFF_NOWLINK|SFF_NOWWFILES|SFF_NOGWFILES;
if (DontLockReadFiles)
sff |= SFF_NOLOCK;
/* need to use method to map secret to passwd string */
switch (lmap->ldap_method)
{
case LDAP_AUTH_NONE:
/* Do nothing */
break;
case LDAP_AUTH_SIMPLE:
/*
** Secret is the name of a file with
** the first line as the password.
*/
/* Already read in the secret? */
if (secretread)
break;
sfd = safefopen(ldapmap_dequote(lmap->ldap_secret),
O_RDONLY, 0, sff);
if (sfd == NULL)
{
syserr("LDAP map: cannot open secret %s",
ldapmap_dequote(lmap->ldap_secret));
return false;
}
lmap->ldap_secret = sfgets(m_tmp, sizeof(m_tmp),
sfd, TimeOuts.to_fileopen,
"ldapmap_parseargs");
(void) sm_io_close(sfd, SM_TIME_DEFAULT);
if (strlen(m_tmp) > LDAPMAP_MAX_PASSWD)
{
syserr("LDAP map: secret in %s too long",
ldapmap_dequote(lmap->ldap_secret));
return false;
}
if (lmap->ldap_secret != NULL &&
strlen(m_tmp) > 0)
{
/* chomp newline */
if (m_tmp[strlen(m_tmp) - 1] == '\n')
m_tmp[strlen(m_tmp) - 1] = '\0';
lmap->ldap_secret = m_tmp;
}
break;
# ifdef LDAP_AUTH_KRBV4
case LDAP_AUTH_KRBV4:
/*
** Secret is where the ticket file is
** stashed
*/
(void) sm_snprintf(m_tmp, sizeof(m_tmp),
"KRBTKFILE=%s",
ldapmap_dequote(lmap->ldap_secret));
lmap->ldap_secret = m_tmp;
break;
# endif /* LDAP_AUTH_KRBV4 */
default: /* Should NEVER get here */
syserr("LDAP map: Illegal value in lmap method");
return false;
/* NOTREACHED */
break;
}
}
if (lmap->ldap_secret != NULL &&
(LDAPDefaults == NULL ||
LDAPDefaults == lmap ||
LDAPDefaults->ldap_secret != lmap->ldap_secret))
lmap->ldap_secret = newstr(ldapmap_dequote(lmap->ldap_secret));
if (lmap->ldap_base != NULL &&
(LDAPDefaults == NULL ||
LDAPDefaults == lmap ||
LDAPDefaults->ldap_base != lmap->ldap_base))
lmap->ldap_base = newstr(ldapmap_dequote(lmap->ldap_base));
/*
** Save the server from extra work. If request is for a single
** match, tell the server to only return enough records to
** determine if there is a single match or not. This can not
** be one since the server would only return one and we wouldn't
** know if there were others available.
*/
if (bitset(MF_SINGLEMATCH, map->map_mflags))
lmap->ldap_sizelimit = 2;
/* If setting defaults, don't process ldap_filter and ldap_attr */
if (lmap == LDAPDefaults)
return true;
if (lmap->ldap_filter != NULL)
lmap->ldap_filter = newstr(ldapmap_dequote(lmap->ldap_filter));
else
{
if (!bitset(MCF_OPTFILE, map->map_class->map_cflags))
{
syserr("No filter given in map %s", map->map_mname);
return false;
}
}
if (!attrssetup && lmap->ldap_attr[0] != NULL)
{
bool recurse = false;
bool normalseen = false;
i = 0;
p = ldapmap_dequote(lmap->ldap_attr[0]);
lmap->ldap_attr[0] = NULL;
/* Prime the attr list with the objectClass attribute */
lmap->ldap_attr[i] = "objectClass";
lmap->ldap_attr_type[i] = SM_LDAP_ATTR_OBJCLASS;
lmap->ldap_attr_needobjclass[i] = NULL;
i++;
while (p != NULL)
{
char *v;
while (isascii(*p) && isspace(*p))
p++;
if (*p == '\0')
break;
v = p;
p = strchr(v, ',');
if (p != NULL)
*p++ = '\0';
if (i >= LDAPMAP_MAX_ATTR)
{
syserr("Too many return attributes in %s (max %d)",
map->map_mname, LDAPMAP_MAX_ATTR);
return false;
}
if (*v != '\0')
{
int j;
int use;
char *type;
char *needobjclass;
type = strchr(v, ':');
if (type != NULL)
{
*type++ = '\0';
needobjclass = strchr(type, ':');
if (needobjclass != NULL)
*needobjclass++ = '\0';
}
else
{
needobjclass = NULL;
}
use = i;
/* allow override on "objectClass" type */
if (sm_strcasecmp(v, "objectClass") == 0 &&
lmap->ldap_attr_type[0] == SM_LDAP_ATTR_OBJCLASS)
{
use = 0;
}
else
{
/*
** Don't add something to attribute
** list twice.
*/
for (j = 1; j < i; j++)
{
if (sm_strcasecmp(v, lmap->ldap_attr[j]) == 0)
{
syserr("Duplicate attribute (%s) in %s",
v, map->map_mname);
return false;
}
}
lmap->ldap_attr[use] = newstr(v);
if (needobjclass != NULL &&
*needobjclass != '\0' &&
*needobjclass != '*')
{
lmap->ldap_attr_needobjclass[use] = newstr(needobjclass);
}
else
{
lmap->ldap_attr_needobjclass[use] = NULL;
}
}
if (type != NULL && *type != '\0')
{
if (sm_strcasecmp(type, "dn") == 0)
{
recurse = true;
lmap->ldap_attr_type[use] = SM_LDAP_ATTR_DN;
}
else if (sm_strcasecmp(type, "filter") == 0)
{
recurse = true;
lmap->ldap_attr_type[use] = SM_LDAP_ATTR_FILTER;
}
else if (sm_strcasecmp(type, "url") == 0)
{
recurse = true;
lmap->ldap_attr_type[use] = SM_LDAP_ATTR_URL;
}
else if (sm_strcasecmp(type, "normal") == 0)
{
lmap->ldap_attr_type[use] = SM_LDAP_ATTR_NORMAL;
normalseen = true;
}
else
{
syserr("Unknown attribute type (%s) in %s",
type, map->map_mname);
return false;
}
}
else
{
lmap->ldap_attr_type[use] = SM_LDAP_ATTR_NORMAL;
normalseen = true;
}
i++;
}
}
lmap->ldap_attr[i] = NULL;
/* Set in case needed in future code */
attrssetup = true;
if (recurse && !normalseen)
{
syserr("LDAP recursion requested in %s but no returnable attribute given",
map->map_mname);
return false;
}
if (recurse && lmap->ldap_attrsonly == LDAPMAP_TRUE)
{
syserr("LDAP recursion requested in %s can not be used with -n",
map->map_mname);
return false;
}
}
map->map_db1 = (ARBPTR_T) lmap;
return true;
}
/*
** LDAPMAP_SET_DEFAULTS -- Read default map spec from LDAPDefaults in .cf
**
** Parameters:
** spec -- map argument string from LDAPDefaults option
**
** Returns:
** None.
*/
void
ldapmap_set_defaults(spec)
char *spec;
{
STAB *class;
MAP map;
/* Allocate and set the default values */
if (LDAPDefaults == NULL)
LDAPDefaults = (SM_LDAP_STRUCT *) xalloc(sizeof(*LDAPDefaults));
sm_ldap_clear(LDAPDefaults);
memset(&map, '\0', sizeof(map));
/* look up the class */
class = stab("ldap", ST_MAPCLASS, ST_FIND);
if (class == NULL)
{
syserr("readcf: LDAPDefaultSpec: class ldap not available");
return;
}
map.map_class = &class->s_mapclass;
map.map_db1 = (ARBPTR_T) LDAPDefaults;
map.map_mname = "O LDAPDefaultSpec";
(void) ldapmap_parseargs(&map, spec);
/* These should never be set in LDAPDefaults */
if (map.map_mflags != (MF_TRY0NULL|MF_TRY1NULL) ||
map.map_spacesub != SpaceSub ||
map.map_app != NULL ||
map.map_tapp != NULL)
{
syserr("readcf: option LDAPDefaultSpec: Do not set non-LDAP specific flags");
SM_FREE_CLR(map.map_app);
SM_FREE_CLR(map.map_tapp);
}
if (LDAPDefaults->ldap_filter != NULL)
{
syserr("readcf: option LDAPDefaultSpec: Do not set the LDAP search filter");
/* don't free, it isn't malloc'ed in parseargs */
LDAPDefaults->ldap_filter = NULL;
}
if (LDAPDefaults->ldap_attr[0] != NULL)
{
syserr("readcf: option LDAPDefaultSpec: Do not set the requested LDAP attributes");
/* don't free, they aren't malloc'ed in parseargs */
LDAPDefaults->ldap_attr[0] = NULL;
}
}
#endif /* LDAPMAP */
/*
** PH map
*/
#if PH_MAP
/*
** Support for the CCSO Nameserver (ph/qi).
** This code is intended to replace the so-called "ph mailer".
** Contributed by Mark D. Roth. Contact him for support.
*/
/* what version of the ph map code we're running */
static char phmap_id[128];
/* sendmail version for phmap id string */
extern const char Version[];
/* assume we're using nph-1.2.x if not specified */
# ifndef NPH_VERSION
# define NPH_VERSION 10200
# endif
/* compatibility for versions older than nph-1.2.0 */
# if NPH_VERSION < 10200
# define PH_OPEN_ROUNDROBIN PH_ROUNDROBIN
# define PH_OPEN_DONTID PH_DONTID
# define PH_CLOSE_FAST PH_FASTCLOSE
# define PH_ERR_DATAERR PH_DATAERR
# define PH_ERR_NOMATCH PH_NOMATCH
# endif /* NPH_VERSION < 10200 */
/*
** PH_MAP_PARSEARGS -- parse ph map definition args.
*/
bool
ph_map_parseargs(map, args)
MAP *map;
char *args;
{
register bool done;
register char *p = args;
PH_MAP_STRUCT *pmap = NULL;
/* initialize version string */
(void) sm_snprintf(phmap_id, sizeof(phmap_id),
"sendmail-%s phmap-20010529 libphclient-%s",
Version, libphclient_version);
pmap = (PH_MAP_STRUCT *) xalloc(sizeof(*pmap));
/* defaults */
pmap->ph_servers = NULL;
pmap->ph_field_list = NULL;
pmap->ph = NULL;
pmap->ph_timeout = 0;
pmap->ph_fastclose = 0;
map->map_mflags |= MF_TRY0NULL|MF_TRY1NULL;
for (;;)
{
while (isascii(*p) && isspace(*p))
p++;
if (*p != '-')
break;
switch (*++p)
{
case 'N':
map->map_mflags |= MF_INCLNULL;
map->map_mflags &= ~MF_TRY0NULL;
break;
case 'O':
map->map_mflags &= ~MF_TRY1NULL;
break;
case 'o':
map->map_mflags |= MF_OPTIONAL;
break;
case 'f':
map->map_mflags |= MF_NOFOLDCASE;
break;
case 'm':
map->map_mflags |= MF_MATCHONLY;
break;
case 'A':
map->map_mflags |= MF_APPEND;
break;
case 'q':
map->map_mflags |= MF_KEEPQUOTES;
break;
case 't':
map->map_mflags |= MF_NODEFER;
break;
case 'a':
map->map_app = ++p;
break;
case 'T':
map->map_tapp = ++p;
break;
case 'l':
while (isascii(*++p) && isspace(*p))
continue;
pmap->ph_timeout = atoi(p);
break;
case 'S':
map->map_spacesub = *++p;
break;
case 'D':
map->map_mflags |= MF_DEFER;
break;
case 'h': /* PH server list */
while (isascii(*++p) && isspace(*p))
continue;
pmap->ph_servers = p;
break;
case 'k': /* fields to search for */
while (isascii(*++p) && isspace(*p))
continue;
pmap->ph_field_list = p;
break;
default:
syserr("ph_map_parseargs: unknown option -%c", *p);
}
/* try to account for quoted strings */
done = isascii(*p) && isspace(*p);
while (*p != '\0' && !done)
{
if (*p == '"')
{
while (*++p != '"' && *p != '\0')
continue;
if (*p != '\0')
p++;
}
else
p++;
done = isascii(*p) && isspace(*p);
}
if (*p != '\0')
*p++ = '\0';
}
if (map->map_app != NULL)
map->map_app = newstr(ph_map_dequote(map->map_app));
if (map->map_tapp != NULL)
map->map_tapp = newstr(ph_map_dequote(map->map_tapp));
if (pmap->ph_field_list != NULL)
pmap->ph_field_list = newstr(ph_map_dequote(pmap->ph_field_list));
if (pmap->ph_servers != NULL)
pmap->ph_servers = newstr(ph_map_dequote(pmap->ph_servers));
else
{
syserr("ph_map_parseargs: -h flag is required");
return false;
}
map->map_db1 = (ARBPTR_T) pmap;
return true;
}
/*
** PH_MAP_CLOSE -- close the connection to the ph server
*/
void
ph_map_close(map)
MAP *map;
{
PH_MAP_STRUCT *pmap;
pmap = (PH_MAP_STRUCT *)map->map_db1;
if (tTd(38, 9))
sm_dprintf("ph_map_close(%s): pmap->ph_fastclose=%d\n",
map->map_mname, pmap->ph_fastclose);
if (pmap->ph != NULL)
{
ph_set_sendhook(pmap->ph, NULL);
ph_set_recvhook(pmap->ph, NULL);
ph_close(pmap->ph, pmap->ph_fastclose);
}
map->map_mflags &= ~(MF_OPEN|MF_WRITABLE);
}
static jmp_buf PHTimeout;
/* ARGSUSED */
static void
ph_timeout(unused)
int unused;
{
/*
** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
** DOING.
*/
errno = ETIMEDOUT;
longjmp(PHTimeout, 1);
}
static void
#if NPH_VERSION >= 10200
ph_map_send_debug(appdata, text)
void *appdata;
#else
ph_map_send_debug(text)
#endif
char *text;
{
if (LogLevel > 9)
sm_syslog(LOG_NOTICE, CurEnv->e_id,
"ph_map_send_debug: ==> %s", text);
if (tTd(38, 20))
sm_dprintf("ph_map_send_debug: ==> %s\n", text);
}
static void
#if NPH_VERSION >= 10200
ph_map_recv_debug(appdata, text)
void *appdata;
#else
ph_map_recv_debug(text)
#endif
char *text;
{
if (LogLevel > 10)
sm_syslog(LOG_NOTICE, CurEnv->e_id,
"ph_map_recv_debug: <== %s", text);
if (tTd(38, 21))
sm_dprintf("ph_map_recv_debug: <== %s\n", text);
}
/*
** PH_MAP_OPEN -- sub for opening PH map
*/
bool
ph_map_open(map, mode)
MAP *map;
int mode;
{
PH_MAP_STRUCT *pmap;
register SM_EVENT *ev = NULL;
int save_errno = 0;
char *hostlist, *host;
if (tTd(38, 2))
sm_dprintf("ph_map_open(%s)\n", map->map_mname);
mode &= O_ACCMODE;
if (mode != O_RDONLY)
{
/* issue a pseudo-error message */
errno = SM_EMAPCANTWRITE;
return false;
}
if (CurEnv != NULL && CurEnv->e_sendmode == SM_DEFER &&
bitset(MF_DEFER, map->map_mflags))
{
if (tTd(9, 1))
sm_dprintf("ph_map_open(%s) => DEFERRED\n",
map->map_mname);
/*
** Unset MF_DEFER here so that map_lookup() returns
** a temporary failure using the bogus map and
** map->map_tapp instead of the default permanent error.
*/
map->map_mflags &= ~MF_DEFER;
return false;
}
pmap = (PH_MAP_STRUCT *)map->map_db1;
pmap->ph_fastclose = 0; /* refresh field for reopen */
/* try each host in the list */
hostlist = newstr(pmap->ph_servers);
for (host = strtok(hostlist, " ");
host != NULL;
host = strtok(NULL, " "))
{
/* set timeout */
if (pmap->ph_timeout != 0)
{
if (setjmp(PHTimeout) != 0)
{
ev = NULL;
if (LogLevel > 1)
sm_syslog(LOG_NOTICE, CurEnv->e_id,
"timeout connecting to PH server %.100s",
host);
errno = ETIMEDOUT;
goto ph_map_open_abort;
}
ev = sm_setevent(pmap->ph_timeout, ph_timeout, 0);
}
/* open connection to server */
if (ph_open(&(pmap->ph), host,
PH_OPEN_ROUNDROBIN|PH_OPEN_DONTID,
ph_map_send_debug, ph_map_recv_debug
#if NPH_VERSION >= 10200
, NULL
#endif
) == 0
&& ph_id(pmap->ph, phmap_id) == 0)
{
if (ev != NULL)
sm_clrevent(ev);
sm_free(hostlist); /* XXX */
return true;
}
ph_map_open_abort:
save_errno = errno;
if (ev != NULL)
sm_clrevent(ev);
pmap->ph_fastclose = PH_CLOSE_FAST;
ph_map_close(map);
errno = save_errno;
}
if (bitset(MF_NODEFER, map->map_mflags))
{
if (errno == 0)
errno = EAGAIN;
syserr("ph_map_open: %s: cannot connect to PH server",
map->map_mname);
}
else if (!bitset(MF_OPTIONAL, map->map_mflags) && LogLevel > 1)
sm_syslog(LOG_NOTICE, CurEnv->e_id,
"ph_map_open: %s: cannot connect to PH server",
map->map_mname);
sm_free(hostlist); /* XXX */
return false;
}
/*
** PH_MAP_LOOKUP -- look up key from ph server
*/
char *
ph_map_lookup(map, key, args, pstat)
MAP *map;
char *key;
char **args;
int *pstat;
{
int i, save_errno = 0;
register SM_EVENT *ev = NULL;
PH_MAP_STRUCT *pmap;
char *value = NULL;
pmap = (PH_MAP_STRUCT *)map->map_db1;
*pstat = EX_OK;
/* set timeout */
if (pmap->ph_timeout != 0)
{
if (setjmp(PHTimeout) != 0)
{
ev = NULL;
if (LogLevel > 1)
sm_syslog(LOG_NOTICE, CurEnv->e_id,
"timeout during PH lookup of %.100s",
key);
errno = ETIMEDOUT;
*pstat = EX_TEMPFAIL;
goto ph_map_lookup_abort;
}
ev = sm_setevent(pmap->ph_timeout, ph_timeout, 0);
}
/* perform lookup */
i = ph_email_resolve(pmap->ph, key, pmap->ph_field_list, &value);
if (i == -1)
*pstat = EX_TEMPFAIL;
else if (i == PH_ERR_NOMATCH || i == PH_ERR_DATAERR)
*pstat = EX_UNAVAILABLE;
ph_map_lookup_abort:
if (ev != NULL)
sm_clrevent(ev);
/*
** Close the connection if the timer popped
** or we got a temporary PH error
*/
if (*pstat == EX_TEMPFAIL)
{
save_errno = errno;
pmap->ph_fastclose = PH_CLOSE_FAST;
ph_map_close(map);
errno = save_errno;
}
if (*pstat == EX_OK)
{
if (tTd(38,20))
sm_dprintf("ph_map_lookup: %s => %s\n", key, value);
if (bitset(MF_MATCHONLY, map->map_mflags))
return map_rewrite(map, key, strlen(key), NULL);
else
return map_rewrite(map, value, strlen(value), args);
}
return NULL;
}
#endif /* PH_MAP */
/*
** syslog map
*/
#define map_prio map_lockfd /* overload field */
/*
** SYSLOG_MAP_PARSEARGS -- check for priority level to syslog messages.
*/
bool
syslog_map_parseargs(map, args)
MAP *map;
char *args;
{
char *p = args;
char *priority = NULL;
/* there is no check whether there is really an argument */
while (*p != '\0')
{
while (isascii(*p) && isspace(*p))
p++;
if (*p != '-')
break;
++p;
if (*p == 'D')
{
map->map_mflags |= MF_DEFER;
++p;
}
else if (*p == 'S')
{
map->map_spacesub = *++p;
if (*p != '\0')
p++;
}
else if (*p == 'L')
{
while (*++p != '\0' && isascii(*p) && isspace(*p))
continue;
if (*p == '\0')
break;
priority = p;
while (*p != '\0' && !(isascii(*p) && isspace(*p)))
p++;
if (*p != '\0')
*p++ = '\0';
}
else
{
syserr("Illegal option %c map syslog", *p);
++p;
}
}
if (priority == NULL)
map->map_prio = LOG_INFO;
else
{
if (sm_strncasecmp("LOG_", priority, 4) == 0)
priority += 4;
#ifdef LOG_EMERG
if (sm_strcasecmp("EMERG", priority) == 0)
map->map_prio = LOG_EMERG;
else
#endif /* LOG_EMERG */
#ifdef LOG_ALERT
if (sm_strcasecmp("ALERT", priority) == 0)
map->map_prio = LOG_ALERT;
else
#endif /* LOG_ALERT */
#ifdef LOG_CRIT
if (sm_strcasecmp("CRIT", priority) == 0)
map->map_prio = LOG_CRIT;
else
#endif /* LOG_CRIT */
#ifdef LOG_ERR
if (sm_strcasecmp("ERR", priority) == 0)
map->map_prio = LOG_ERR;
else
#endif /* LOG_ERR */
#ifdef LOG_WARNING
if (sm_strcasecmp("WARNING", priority) == 0)
map->map_prio = LOG_WARNING;
else
#endif /* LOG_WARNING */
#ifdef LOG_NOTICE
if (sm_strcasecmp("NOTICE", priority) == 0)
map->map_prio = LOG_NOTICE;
else
#endif /* LOG_NOTICE */
#ifdef LOG_INFO
if (sm_strcasecmp("INFO", priority) == 0)
map->map_prio = LOG_INFO;
else
#endif /* LOG_INFO */
#ifdef LOG_DEBUG
if (sm_strcasecmp("DEBUG", priority) == 0)
map->map_prio = LOG_DEBUG;
else
#endif /* LOG_DEBUG */
{
syserr("syslog_map_parseargs: Unknown priority %s",
priority);
return false;
}
}
return true;
}
/*
** SYSLOG_MAP_LOOKUP -- rewrite and syslog message. Always return empty string
*/
char *
syslog_map_lookup(map, string, args, statp)
MAP *map;
char *string;
char **args;
int *statp;
{
char *ptr = map_rewrite(map, string, strlen(string), args);
if (ptr != NULL)
{
if (tTd(38, 20))
sm_dprintf("syslog_map_lookup(%s (priority %d): %s\n",
map->map_mname, map->map_prio, ptr);
sm_syslog(map->map_prio, CurEnv->e_id, "%s", ptr);
}
*statp = EX_OK;
return "";
}
#if _FFR_DPRINTF_MAP
/*
** dprintf map
*/
#define map_dbg_level map_lockfd /* overload field */
/*
** DPRINTF_MAP_PARSEARGS -- check for priority level to dprintf messages.
*/
bool
dprintf_map_parseargs(map, args)
MAP *map;
char *args;
{
char *p = args;
char *dbg_level = NULL;
/* there is no check whether there is really an argument */
while (*p != '\0')
{
while (isascii(*p) && isspace(*p))
p++;
if (*p != '-')
break;
++p;
if (*p == 'D')
{
map->map_mflags |= MF_DEFER;
++p;
}
else if (*p == 'S')
{
map->map_spacesub = *++p;
if (*p != '\0')
p++;
}
else if (*p == 'd')
{
while (*++p != '\0' && isascii(*p) && isspace(*p))
continue;
if (*p == '\0')
break;
dbg_level = p;
while (*p != '\0' && !(isascii(*p) && isspace(*p)))
p++;
if (*p != '\0')
*p++ = '\0';
}
else
{
syserr("Illegal option %c map dprintf", *p);
++p;
}
}
if (dbg_level == NULL)
map->map_dbg_level = 0;
else
{
if (!(isascii(*dbg_level) && isdigit(*dbg_level)))
{
syserr("dprintf map \"%s\", file %s: -d should specify a number, not %s",
map->map_mname, map->map_file,
dbg_level);
return false;
}
map->map_dbg_level = atoi(dbg_level);
}
return true;
}
/*
** DPRINTF_MAP_LOOKUP -- rewrite and print message. Always return empty string
*/
char *
dprintf_map_lookup(map, string, args, statp)
MAP *map;
char *string;
char **args;
int *statp;
{
char *ptr = map_rewrite(map, string, strlen(string), args);
if (ptr != NULL && tTd(85, map->map_dbg_level))
sm_dprintf("%s\n", ptr);
*statp = EX_OK;
return "";
}
#endif /* _FFR_DPRINTF_MAP */
/*
** HESIOD Modules
*/
#if HESIOD
bool
hes_map_open(map, mode)
MAP *map;
int mode;
{
if (tTd(38, 2))
sm_dprintf("hes_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
if (mode != O_RDONLY)
{
/* issue a pseudo-error message */
errno = SM_EMAPCANTWRITE;
return false;
}
# ifdef HESIOD_INIT
if (HesiodContext != NULL || hesiod_init(&HesiodContext) == 0)
return true;
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("451 4.3.5 cannot initialize Hesiod map (%s)",
sm_errstring(errno));
return false;
# else /* HESIOD_INIT */
if (hes_error() == HES_ER_UNINIT)
hes_init();
switch (hes_error())
{
case HES_ER_OK:
case HES_ER_NOTFOUND:
return true;
}
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("451 4.3.5 cannot initialize Hesiod map (%d)", hes_error());
return false;
# endif /* HESIOD_INIT */
}
char *
hes_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
char **hp;
if (tTd(38, 20))
sm_dprintf("hes_map_lookup(%s, %s)\n", map->map_file, name);
if (name[0] == '\\')
{
char *np;
int nl;
int save_errno;
char nbuf[MAXNAME];
nl = strlen(name);
if (nl < sizeof(nbuf) - 1)
np = nbuf;
else
np = xalloc(strlen(name) + 2);
np[0] = '\\';
(void) sm_strlcpy(&np[1], name, (sizeof(nbuf)) - 1);
# ifdef HESIOD_INIT
hp = hesiod_resolve(HesiodContext, np, map->map_file);
# else /* HESIOD_INIT */
hp = hes_resolve(np, map->map_file);
# endif /* HESIOD_INIT */
save_errno = errno;
if (np != nbuf)
sm_free(np); /* XXX */
errno = save_errno;
}
else
{
# ifdef HESIOD_INIT
hp = hesiod_resolve(HesiodContext, name, map->map_file);
# else /* HESIOD_INIT */
hp = hes_resolve(name, map->map_file);
# endif /* HESIOD_INIT */
}
# ifdef HESIOD_INIT
if (hp == NULL || *hp == NULL)
{
switch (errno)
{
case ENOENT:
*statp = EX_NOTFOUND;
break;
case ECONNREFUSED:
*statp = EX_TEMPFAIL;
break;
case EMSGSIZE:
case ENOMEM:
default:
*statp = EX_UNAVAILABLE;
break;
}
if (hp != NULL)
hesiod_free_list(HesiodContext, hp);
return NULL;
}
# else /* HESIOD_INIT */
if (hp == NULL || hp[0] == NULL)
{
switch (hes_error())
{
case HES_ER_OK:
*statp = EX_OK;
break;
case HES_ER_NOTFOUND:
*statp = EX_NOTFOUND;
break;
case HES_ER_CONFIG:
*statp = EX_UNAVAILABLE;
break;
case HES_ER_NET:
*statp = EX_TEMPFAIL;
break;
}
return NULL;
}
# endif /* HESIOD_INIT */
if (bitset(MF_MATCHONLY, map->map_mflags))
return map_rewrite(map, name, strlen(name), NULL);
else
return map_rewrite(map, hp[0], strlen(hp[0]), av);
}
/*
** HES_MAP_CLOSE -- free the Hesiod context
*/
void
hes_map_close(map)
MAP *map;
{
if (tTd(38, 20))
sm_dprintf("hes_map_close(%s)\n", map->map_file);
# ifdef HESIOD_INIT
/* Free the hesiod context */
if (HesiodContext != NULL)
{
hesiod_end(HesiodContext);
HesiodContext = NULL;
}
# endif /* HESIOD_INIT */
}
#endif /* HESIOD */
/*
** NeXT NETINFO Modules
*/
#if NETINFO
# define NETINFO_DEFAULT_DIR "/aliases"
# define NETINFO_DEFAULT_PROPERTY "members"
/*
** NI_MAP_OPEN -- open NetInfo Aliases
*/
bool
ni_map_open(map, mode)
MAP *map;
int mode;
{
if (tTd(38, 2))
sm_dprintf("ni_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
mode &= O_ACCMODE;
if (*map->map_file == '\0')
map->map_file = NETINFO_DEFAULT_DIR;
if (map->map_valcolnm == NULL)
map->map_valcolnm = NETINFO_DEFAULT_PROPERTY;
if (map->map_coldelim == '\0')
{
if (bitset(MF_ALIAS, map->map_mflags))
map->map_coldelim = ',';
else if (bitset(MF_FILECLASS, map->map_mflags))
map->map_coldelim = ' ';
}
return true;
}
/*
** NI_MAP_LOOKUP -- look up a datum in NetInfo
*/
char *
ni_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
char *res;
char *propval;
if (tTd(38, 20))
sm_dprintf("ni_map_lookup(%s, %s)\n", map->map_mname, name);
propval = ni_propval(map->map_file, map->map_keycolnm, name,
map->map_valcolnm, map->map_coldelim);
if (propval == NULL)
return NULL;
SM_TRY
if (bitset(MF_MATCHONLY, map->map_mflags))
res = map_rewrite(map, name, strlen(name), NULL);
else
res = map_rewrite(map, propval, strlen(propval), av);
SM_FINALLY
sm_free(propval);
SM_END_TRY
return res;
}
static bool
ni_getcanonname(name, hbsize, statp)
char *name;
int hbsize;
int *statp;
{
char *vptr;
char *ptr;
char nbuf[MAXNAME + 1];
if (tTd(38, 20))
sm_dprintf("ni_getcanonname(%s)\n", name);
if (sm_strlcpy(nbuf, name, sizeof(nbuf)) >= sizeof(nbuf))
{
*statp = EX_UNAVAILABLE;
return false;
}
(void) shorten_hostname(nbuf);
/* we only accept single token search key */
if (strchr(nbuf, '.'))
{
*statp = EX_NOHOST;
return false;
}
/* Do the search */
vptr = ni_propval("/machines", NULL, nbuf, "name", '\n');
if (vptr == NULL)
{
*statp = EX_NOHOST;
return false;
}
/* Only want the first machine name */
if ((ptr = strchr(vptr, '\n')) != NULL)
*ptr = '\0';
if (sm_strlcpy(name, vptr, hbsize) >= hbsize)
{
sm_free(vptr);
*statp = EX_UNAVAILABLE;
return true;
}
sm_free(vptr);
*statp = EX_OK;
return false;
}
#endif /* NETINFO */
/*
** TEXT (unindexed text file) Modules
**
** This code donated by Sun Microsystems.
*/
#define map_sff map_lockfd /* overload field */
/*
** TEXT_MAP_OPEN -- open text table
*/
bool
text_map_open(map, mode)
MAP *map;
int mode;
{
long sff;
int i;
if (tTd(38, 2))
sm_dprintf("text_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
mode &= O_ACCMODE;
if (mode != O_RDONLY)
{
errno = EPERM;
return false;
}
if (*map->map_file == '\0')
{
syserr("text map \"%s\": file name required",
map->map_mname);
return false;
}
if (map->map_file[0] != '/')
{
syserr("text map \"%s\": file name must be fully qualified",
map->map_mname);
return false;
}
sff = SFF_ROOTOK|SFF_REGONLY;
if (!bitnset(DBS_LINKEDMAPINWRITABLEDIR, DontBlameSendmail))
sff |= SFF_NOWLINK;
if (!bitnset(DBS_MAPINUNSAFEDIRPATH, DontBlameSendmail))
sff |= SFF_SAFEDIRPATH;
if ((i = safefile(map->map_file, RunAsUid, RunAsGid, RunAsUserName,
sff, S_IRUSR, NULL)) != 0)
{
int save_errno = errno;
/* cannot open this map */
if (tTd(38, 2))
sm_dprintf("\tunsafe map file: %d\n", i);
errno = save_errno;
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("text map \"%s\": unsafe map file %s",
map->map_mname, map->map_file);
return false;
}
if (map->map_keycolnm == NULL)
map->map_keycolno = 0;
else
{
if (!(isascii(*map->map_keycolnm) && isdigit(*map->map_keycolnm)))
{
syserr("text map \"%s\", file %s: -k should specify a number, not %s",
map->map_mname, map->map_file,
map->map_keycolnm);
return false;
}
map->map_keycolno = atoi(map->map_keycolnm);
}
if (map->map_valcolnm == NULL)
map->map_valcolno = 0;
else
{
if (!(isascii(*map->map_valcolnm) && isdigit(*map->map_valcolnm)))
{
syserr("text map \"%s\", file %s: -v should specify a number, not %s",
map->map_mname, map->map_file,
map->map_valcolnm);
return false;
}
map->map_valcolno = atoi(map->map_valcolnm);
}
if (tTd(38, 2))
{
sm_dprintf("text_map_open(%s, %s): delimiter = ",
map->map_mname, map->map_file);
if (map->map_coldelim == '\0')
sm_dprintf("(white space)\n");
else
sm_dprintf("%c\n", map->map_coldelim);
}
map->map_sff = sff;
return true;
}
/*
** TEXT_MAP_LOOKUP -- look up a datum in a TEXT table
*/
char *
text_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
char *vp;
auto int vsize;
int buflen;
SM_FILE_T *f;
char delim;
int key_idx;
bool found_it;
long sff = map->map_sff;
char search_key[MAXNAME + 1];
char linebuf[MAXLINE];
char buf[MAXNAME + 1];
found_it = false;
if (tTd(38, 20))
sm_dprintf("text_map_lookup(%s, %s)\n", map->map_mname, name);
buflen = strlen(name);
if (buflen > sizeof(search_key) - 1)
buflen = sizeof(search_key) - 1; /* XXX just cut if off? */
memmove(search_key, name, buflen);
search_key[buflen] = '\0';
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
makelower(search_key);
f = safefopen(map->map_file, O_RDONLY, FileMode, sff);
if (f == NULL)
{
map->map_mflags &= ~(MF_VALID|MF_OPEN);
*statp = EX_UNAVAILABLE;
return NULL;
}
key_idx = map->map_keycolno;
delim = map->map_coldelim;
while (sm_io_fgets(f, SM_TIME_DEFAULT,
linebuf, sizeof(linebuf)) != NULL)
{
char *p;
/* skip comment line */
if (linebuf[0] == '#')
continue;
p = strchr(linebuf, '\n');
if (p != NULL)
*p = '\0';
p = get_column(linebuf, key_idx, delim, buf, sizeof(buf));
if (p != NULL && sm_strcasecmp(search_key, p) == 0)
{
found_it = true;
break;
}
}
(void) sm_io_close(f, SM_TIME_DEFAULT);
if (!found_it)
{
*statp = EX_NOTFOUND;
return NULL;
}
vp = get_column(linebuf, map->map_valcolno, delim, buf, sizeof(buf));
if (vp == NULL)
{
*statp = EX_NOTFOUND;
return NULL;
}
vsize = strlen(vp);
*statp = EX_OK;
if (bitset(MF_MATCHONLY, map->map_mflags))
return map_rewrite(map, name, strlen(name), NULL);
else
return map_rewrite(map, vp, vsize, av);
}
/*
** TEXT_GETCANONNAME -- look up canonical name in hosts file
*/
static bool
text_getcanonname(name, hbsize, statp)
char *name;
int hbsize;
int *statp;
{
bool found;
char *dot;
SM_FILE_T *f;
char linebuf[MAXLINE];
char cbuf[MAXNAME + 1];
char nbuf[MAXNAME + 1];
if (tTd(38, 20))
sm_dprintf("text_getcanonname(%s)\n", name);
if (sm_strlcpy(nbuf, name, sizeof(nbuf)) >= sizeof(nbuf))
{
*statp = EX_UNAVAILABLE;
return false;
}
dot = shorten_hostname(nbuf);
f = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, HostsFile, SM_IO_RDONLY,
NULL);
if (f == NULL)
{
*statp = EX_UNAVAILABLE;
return false;
}
found = false;
while (!found &&
sm_io_fgets(f, SM_TIME_DEFAULT,
linebuf, sizeof(linebuf)) != NULL)
{
char *p = strpbrk(linebuf, "#\n");
if (p != NULL)
*p = '\0';
if (linebuf[0] != '\0')
found = extract_canonname(nbuf, dot, linebuf,
cbuf, sizeof(cbuf));
}
(void) sm_io_close(f, SM_TIME_DEFAULT);
if (!found)
{
*statp = EX_NOHOST;
return false;
}
if (sm_strlcpy(name, cbuf, hbsize) >= hbsize)
{
*statp = EX_UNAVAILABLE;
return false;
}
*statp = EX_OK;
return true;
}
/*
** STAB (Symbol Table) Modules
*/
/*
** STAB_MAP_LOOKUP -- look up alias in symbol table
*/
/* ARGSUSED2 */
char *
stab_map_lookup(map, name, av, pstat)
register MAP *map;
char *name;
char **av;
int *pstat;
{
register STAB *s;
if (tTd(38, 20))
sm_dprintf("stab_lookup(%s, %s)\n",
map->map_mname, name);
s = stab(name, ST_ALIAS, ST_FIND);
if (s == NULL)
return NULL;
if (bitset(MF_MATCHONLY, map->map_mflags))
return map_rewrite(map, name, strlen(name), NULL);
else
return map_rewrite(map, s->s_alias, strlen(s->s_alias), av);
}
/*
** STAB_MAP_STORE -- store in symtab (actually using during init, not rebuild)
*/
void
stab_map_store(map, lhs, rhs)
register MAP *map;
char *lhs;
char *rhs;
{
register STAB *s;
s = stab(lhs, ST_ALIAS, ST_ENTER);
s->s_alias = newstr(rhs);
}
/*
** STAB_MAP_OPEN -- initialize (reads data file)
**
** This is a weird case -- it is only intended as a fallback for
** aliases. For this reason, opens for write (only during a
** "newaliases") always fails, and opens for read open the
** actual underlying text file instead of the database.
*/
bool
stab_map_open(map, mode)
register MAP *map;
int mode;
{
SM_FILE_T *af;
long sff;
struct stat st;
if (tTd(38, 2))
sm_dprintf("stab_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
mode &= O_ACCMODE;
if (mode != O_RDONLY)
{
errno = EPERM;
return false;
}
sff = SFF_ROOTOK|SFF_REGONLY;
if (!bitnset(DBS_LINKEDMAPINWRITABLEDIR, DontBlameSendmail))
sff |= SFF_NOWLINK;
if (!bitnset(DBS_MAPINUNSAFEDIRPATH, DontBlameSendmail))
sff |= SFF_SAFEDIRPATH;
af = safefopen(map->map_file, O_RDONLY, 0444, sff);
if (af == NULL)
return false;
readaliases(map, af, false, false);
if (fstat(sm_io_getinfo(af, SM_IO_WHAT_FD, NULL), &st) >= 0)
map->map_mtime = st.st_mtime;
(void) sm_io_close(af, SM_TIME_DEFAULT);
return true;
}
/*
** Implicit Modules
**
** Tries several types. For back compatibility of aliases.
*/
/*
** IMPL_MAP_LOOKUP -- lookup in best open database
*/
char *
impl_map_lookup(map, name, av, pstat)
MAP *map;
char *name;
char **av;
int *pstat;
{
if (tTd(38, 20))
sm_dprintf("impl_map_lookup(%s, %s)\n",
map->map_mname, name);
#if NEWDB
if (bitset(MF_IMPL_HASH, map->map_mflags))
return db_map_lookup(map, name, av, pstat);
#endif /* NEWDB */
#if NDBM
if (bitset(MF_IMPL_NDBM, map->map_mflags))
return ndbm_map_lookup(map, name, av, pstat);
#endif /* NDBM */
return stab_map_lookup(map, name, av, pstat);
}
/*
** IMPL_MAP_STORE -- store in open databases
*/
void
impl_map_store(map, lhs, rhs)
MAP *map;
char *lhs;
char *rhs;
{
if (tTd(38, 12))
sm_dprintf("impl_map_store(%s, %s, %s)\n",
map->map_mname, lhs, rhs);
#if NEWDB
if (bitset(MF_IMPL_HASH, map->map_mflags))
db_map_store(map, lhs, rhs);
#endif /* NEWDB */
#if NDBM
if (bitset(MF_IMPL_NDBM, map->map_mflags))
ndbm_map_store(map, lhs, rhs);
#endif /* NDBM */
stab_map_store(map, lhs, rhs);
}
/*
** IMPL_MAP_OPEN -- implicit database open
*/
bool
impl_map_open(map, mode)
MAP *map;
int mode;
{
if (tTd(38, 2))
sm_dprintf("impl_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
mode &= O_ACCMODE;
#if NEWDB
map->map_mflags |= MF_IMPL_HASH;
if (hash_map_open(map, mode))
{
# ifdef NDBM_YP_COMPAT
if (mode == O_RDONLY || strstr(map->map_file, "/yp/") == NULL)
# endif /* NDBM_YP_COMPAT */
return true;
}
else
map->map_mflags &= ~MF_IMPL_HASH;
#endif /* NEWDB */
#if NDBM
map->map_mflags |= MF_IMPL_NDBM;
if (ndbm_map_open(map, mode))
{
return true;
}
else
map->map_mflags &= ~MF_IMPL_NDBM;
#endif /* NDBM */
#if defined(NEWDB) || defined(NDBM)
if (Verbose)
message("WARNING: cannot open alias database %s%s",
map->map_file,
mode == O_RDONLY ? "; reading text version" : "");
#else /* defined(NEWDB) || defined(NDBM) */
if (mode != O_RDONLY)
usrerr("Cannot rebuild aliases: no database format defined");
#endif /* defined(NEWDB) || defined(NDBM) */
if (mode == O_RDONLY)
return stab_map_open(map, mode);
else
return false;
}
/*
** IMPL_MAP_CLOSE -- close any open database(s)
*/
void
impl_map_close(map)
MAP *map;
{
if (tTd(38, 9))
sm_dprintf("impl_map_close(%s, %s, %lx)\n",
map->map_mname, map->map_file, map->map_mflags);
#if NEWDB
if (bitset(MF_IMPL_HASH, map->map_mflags))
{
db_map_close(map);
map->map_mflags &= ~MF_IMPL_HASH;
}
#endif /* NEWDB */
#if NDBM
if (bitset(MF_IMPL_NDBM, map->map_mflags))
{
ndbm_map_close(map);
map->map_mflags &= ~MF_IMPL_NDBM;
}
#endif /* NDBM */
}
/*
** User map class.
**
** Provides access to the system password file.
*/
/*
** USER_MAP_OPEN -- open user map
**
** Really just binds field names to field numbers.
*/
bool
user_map_open(map, mode)
MAP *map;
int mode;
{
if (tTd(38, 2))
sm_dprintf("user_map_open(%s, %d)\n",
map->map_mname, mode);
mode &= O_ACCMODE;
if (mode != O_RDONLY)
{
/* issue a pseudo-error message */
errno = SM_EMAPCANTWRITE;
return false;
}
if (map->map_valcolnm == NULL)
/* EMPTY */
/* nothing */ ;
else if (sm_strcasecmp(map->map_valcolnm, "name") == 0)
map->map_valcolno = 1;
else if (sm_strcasecmp(map->map_valcolnm, "passwd") == 0)
map->map_valcolno = 2;
else if (sm_strcasecmp(map->map_valcolnm, "uid") == 0)
map->map_valcolno = 3;
else if (sm_strcasecmp(map->map_valcolnm, "gid") == 0)
map->map_valcolno = 4;
else if (sm_strcasecmp(map->map_valcolnm, "gecos") == 0)
map->map_valcolno = 5;
else if (sm_strcasecmp(map->map_valcolnm, "dir") == 0)
map->map_valcolno = 6;
else if (sm_strcasecmp(map->map_valcolnm, "shell") == 0)
map->map_valcolno = 7;
else
{
syserr("User map %s: unknown column name %s",
map->map_mname, map->map_valcolnm);
return false;
}
return true;
}
/*
** USER_MAP_LOOKUP -- look up a user in the passwd file.
*/
/* ARGSUSED3 */
char *
user_map_lookup(map, key, av, statp)
MAP *map;
char *key;
char **av;
int *statp;
{
auto bool fuzzy;
SM_MBDB_T user;
if (tTd(38, 20))
sm_dprintf("user_map_lookup(%s, %s)\n",
map->map_mname, key);
*statp = finduser(key, &fuzzy, &user);
if (*statp != EX_OK)
return NULL;
if (bitset(MF_MATCHONLY, map->map_mflags))
return map_rewrite(map, key, strlen(key), NULL);
else
{
char *rwval = NULL;
char buf[30];
switch (map->map_valcolno)
{
case 0:
case 1:
rwval = user.mbdb_name;
break;
case 2:
rwval = "x"; /* passwd no longer supported */
break;
case 3:
(void) sm_snprintf(buf, sizeof(buf), "%d",
(int) user.mbdb_uid);
rwval = buf;
break;
case 4:
(void) sm_snprintf(buf, sizeof(buf), "%d",
(int) user.mbdb_gid);
rwval = buf;
break;
case 5:
rwval = user.mbdb_fullname;
break;
case 6:
rwval = user.mbdb_homedir;
break;
case 7:
rwval = user.mbdb_shell;
break;
default:
syserr("user_map %s: bogus field %d",
map->map_mname, map->map_valcolno);
return NULL;
}
return map_rewrite(map, rwval, strlen(rwval), av);
}
}
/*
** Program map type.
**
** This provides access to arbitrary programs. It should be used
** only very sparingly, since there is no way to bound the cost
** of invoking an arbitrary program.
*/
char *
prog_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
int i;
int save_errno;
int fd;
int status;
auto pid_t pid;
register char *p;
char *rval;
char *argv[MAXPV + 1];
char buf[MAXLINE];
if (tTd(38, 20))
sm_dprintf("prog_map_lookup(%s, %s) %s\n",
map->map_mname, name, map->map_file);
i = 0;
argv[i++] = map->map_file;
if (map->map_rebuild != NULL)
{
(void) sm_strlcpy(buf, map->map_rebuild, sizeof(buf));
for (p = strtok(buf, " \t"); p != NULL; p = strtok(NULL, " \t"))
{
if (i >= MAXPV - 1)
break;
argv[i++] = p;
}
}
argv[i++] = name;
argv[i] = NULL;
if (tTd(38, 21))
{
sm_dprintf("prog_open:");
for (i = 0; argv[i] != NULL; i++)
sm_dprintf(" %s", argv[i]);
sm_dprintf("\n");
}
(void) sm_blocksignal(SIGCHLD);
pid = prog_open(argv, &fd, CurEnv);
if (pid < 0)
{
if (!bitset(MF_OPTIONAL, map->map_mflags))
syserr("prog_map_lookup(%s) failed (%s) -- closing",
map->map_mname, sm_errstring(errno));
else if (tTd(38, 9))
sm_dprintf("prog_map_lookup(%s) failed (%s) -- closing",
map->map_mname, sm_errstring(errno));
map->map_mflags &= ~(MF_VALID|MF_OPEN);
*statp = EX_OSFILE;
return NULL;
}
i = read(fd, buf, sizeof(buf) - 1);
if (i < 0)
{
syserr("prog_map_lookup(%s): read error %s",
map->map_mname, sm_errstring(errno));
rval = NULL;
}
else if (i == 0)
{
if (tTd(38, 20))
sm_dprintf("prog_map_lookup(%s): empty answer\n",
map->map_mname);
rval = NULL;
}
else
{
buf[i] = '\0';
p = strchr(buf, '\n');
if (p != NULL)
*p = '\0';
/* collect the return value */
if (bitset(MF_MATCHONLY, map->map_mflags))
rval = map_rewrite(map, name, strlen(name), NULL);
else
rval = map_rewrite(map, buf, strlen(buf), av);
/* now flush any additional output */
while ((i = read(fd, buf, sizeof(buf))) > 0)
continue;
}
/* wait for the process to terminate */
(void) close(fd);
status = waitfor(pid);
save_errno = errno;
(void) sm_releasesignal(SIGCHLD);
errno = save_errno;
if (status == -1)
{
syserr("prog_map_lookup(%s): wait error %s",
map->map_mname, sm_errstring(errno));
*statp = EX_SOFTWARE;
rval = NULL;
}
else if (WIFEXITED(status))
{
if ((*statp = WEXITSTATUS(status)) != EX_OK)
rval = NULL;
}
else
{
syserr("prog_map_lookup(%s): child died on signal %d",
map->map_mname, status);
*statp = EX_UNAVAILABLE;
rval = NULL;
}
return rval;
}
/*
** Sequenced map type.
**
** Tries each map in order until something matches, much like
** implicit. Stores go to the first map in the list that can
** support storing.
**
** This is slightly unusual in that there are two interfaces.
** The "sequence" interface lets you stack maps arbitrarily.
** The "switch" interface builds a sequence map by looking
** at a system-dependent configuration file such as
** /etc/nsswitch.conf on Solaris or /etc/svc.conf on Ultrix.
**
** We don't need an explicit open, since all maps are
** opened on demand.
*/
/*
** SEQ_MAP_PARSE -- Sequenced map parsing
*/
bool
seq_map_parse(map, ap)
MAP *map;
char *ap;
{
int maxmap;
if (tTd(38, 2))
sm_dprintf("seq_map_parse(%s, %s)\n", map->map_mname, ap);
maxmap = 0;
while (*ap != '\0')
{
register char *p;
STAB *s;
/* find beginning of map name */
while (isascii(*ap) && isspace(*ap))
ap++;
for (p = ap;
(isascii(*p) && isalnum(*p)) || *p == '_' || *p == '.';
p++)
continue;
if (*p != '\0')
*p++ = '\0';
while (*p != '\0' && (!isascii(*p) || !isalnum(*p)))
p++;
if (*ap == '\0')
{
ap = p;
continue;
}
s = stab(ap, ST_MAP, ST_FIND);
if (s == NULL)
{
syserr("Sequence map %s: unknown member map %s",
map->map_mname, ap);
}
else if (maxmap >= MAXMAPSTACK)
{
syserr("Sequence map %s: too many member maps (%d max)",
map->map_mname, MAXMAPSTACK);
maxmap++;
}
else if (maxmap < MAXMAPSTACK)
{
map->map_stack[maxmap++] = &s->s_map;
}
ap = p;
}
return true;
}
/*
** SWITCH_MAP_OPEN -- open a switched map
**
** This looks at the system-dependent configuration and builds
** a sequence map that does the same thing.
**
** Every system must define a switch_map_find routine in conf.c
** that will return the list of service types associated with a
** given service class.
*/
bool
switch_map_open(map, mode)
MAP *map;
int mode;
{
int mapno;
int nmaps;
char *maptype[MAXMAPSTACK];
if (tTd(38, 2))
sm_dprintf("switch_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
mode &= O_ACCMODE;
nmaps = switch_map_find(map->map_file, maptype, map->map_return);
if (tTd(38, 19))
{
sm_dprintf("\tswitch_map_find => %d\n", nmaps);
for (mapno = 0; mapno < nmaps; mapno++)
sm_dprintf("\t\t%s\n", maptype[mapno]);
}
if (nmaps <= 0 || nmaps > MAXMAPSTACK)
return false;
for (mapno = 0; mapno < nmaps; mapno++)
{
register STAB *s;
char nbuf[MAXNAME + 1];
if (maptype[mapno] == NULL)
continue;
(void) sm_strlcpyn(nbuf, sizeof(nbuf), 3,
map->map_mname, ".", maptype[mapno]);
s = stab(nbuf, ST_MAP, ST_FIND);
if (s == NULL)
{
syserr("Switch map %s: unknown member map %s",
map->map_mname, nbuf);
}
else
{
map->map_stack[mapno] = &s->s_map;
if (tTd(38, 4))
sm_dprintf("\tmap_stack[%d] = %s:%s\n",
mapno,
s->s_map.map_class->map_cname,
nbuf);
}
}
return true;
}
#if 0
/*
** SEQ_MAP_CLOSE -- close all underlying maps
*/
void
seq_map_close(map)
MAP *map;
{
int mapno;
if (tTd(38, 9))
sm_dprintf("seq_map_close(%s)\n", map->map_mname);
for (mapno = 0; mapno < MAXMAPSTACK; mapno++)
{
MAP *mm = map->map_stack[mapno];
if (mm == NULL || !bitset(MF_OPEN, mm->map_mflags))
continue;
mm->map_mflags |= MF_CLOSING;
mm->map_class->map_close(mm);
mm->map_mflags &= ~(MF_OPEN|MF_WRITABLE|MF_CLOSING);
}
}
#endif /* 0 */
/*
** SEQ_MAP_LOOKUP -- sequenced map lookup
*/
char *
seq_map_lookup(map, key, args, pstat)
MAP *map;
char *key;
char **args;
int *pstat;
{
int mapno;
int mapbit = 0x01;
bool tempfail = false;
if (tTd(38, 20))
sm_dprintf("seq_map_lookup(%s, %s)\n", map->map_mname, key);
for (mapno = 0; mapno < MAXMAPSTACK; mapbit <<= 1, mapno++)
{
MAP *mm = map->map_stack[mapno];
char *rv;
if (mm == NULL)
continue;
if (!bitset(MF_OPEN, mm->map_mflags) &&
!openmap(mm))
{
if (bitset(mapbit, map->map_return[MA_UNAVAIL]))
{
*pstat = EX_UNAVAILABLE;
return NULL;
}
continue;
}
*pstat = EX_OK;
rv = mm->map_class->map_lookup(mm, key, args, pstat);
if (rv != NULL)
return rv;
if (*pstat == EX_TEMPFAIL)
{
if (bitset(mapbit, map->map_return[MA_TRYAGAIN]))
return NULL;
tempfail = true;
}
else if (bitset(mapbit, map->map_return[MA_NOTFOUND]))
break;
}
if (tempfail)
*pstat = EX_TEMPFAIL;
else if (*pstat == EX_OK)
*pstat = EX_NOTFOUND;
return NULL;
}
/*
** SEQ_MAP_STORE -- sequenced map store
*/
void
seq_map_store(map, key, val)
MAP *map;
char *key;
char *val;
{
int mapno;
if (tTd(38, 12))
sm_dprintf("seq_map_store(%s, %s, %s)\n",
map->map_mname, key, val);
for (mapno = 0; mapno < MAXMAPSTACK; mapno++)
{
MAP *mm = map->map_stack[mapno];
if (mm == NULL || !bitset(MF_WRITABLE, mm->map_mflags))
continue;
mm->map_class->map_store(mm, key, val);
return;
}
syserr("seq_map_store(%s, %s, %s): no writable map",
map->map_mname, key, val);
}
/*
** NULL stubs
*/
/* ARGSUSED */
bool
null_map_open(map, mode)
MAP *map;
int mode;
{
return true;
}
/* ARGSUSED */
void
null_map_close(map)
MAP *map;
{
return;
}
char *
null_map_lookup(map, key, args, pstat)
MAP *map;
char *key;
char **args;
int *pstat;
{
*pstat = EX_NOTFOUND;
return NULL;
}
/* ARGSUSED */
void
null_map_store(map, key, val)
MAP *map;
char *key;
char *val;
{
return;
}
MAPCLASS NullMapClass =
{
"null-map", NULL, 0,
NULL, null_map_lookup, null_map_store,
null_map_open, null_map_close,
};
/*
** BOGUS stubs
*/
char *
bogus_map_lookup(map, key, args, pstat)
MAP *map;
char *key;
char **args;
int *pstat;
{
*pstat = EX_TEMPFAIL;
return NULL;
}
MAPCLASS BogusMapClass =
{
"bogus-map", NULL, 0,
NULL, bogus_map_lookup, null_map_store,
null_map_open, null_map_close,
};
/*
** MACRO modules
*/
char *
macro_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
int mid;
if (tTd(38, 20))
sm_dprintf("macro_map_lookup(%s, %s)\n", map->map_mname,
name == NULL ? "NULL" : name);
if (name == NULL ||
*name == '\0' ||
(mid = macid(name)) == 0)
{
*statp = EX_CONFIG;
return NULL;
}
if (av[1] == NULL)
macdefine(&CurEnv->e_macro, A_PERM, mid, NULL);
else
macdefine(&CurEnv->e_macro, A_TEMP, mid, av[1]);
*statp = EX_OK;
return "";
}
/*
** REGEX modules
*/
#if MAP_REGEX
# include <regex.h>
# define DEFAULT_DELIM CONDELSE
# define END_OF_FIELDS -1
# define ERRBUF_SIZE 80
# define MAX_MATCH 32
# define xnalloc(s) memset(xalloc(s), '\0', s);
struct regex_map
{
regex_t *regex_pattern_buf; /* xalloc it */
int *regex_subfields; /* move to type MAP */
char *regex_delim; /* move to type MAP */
};
static int parse_fields __P((char *, int *, int, int));
static char *regex_map_rewrite __P((MAP *, const char*, size_t, char **));
static int
parse_fields(s, ibuf, blen, nr_substrings)
char *s;
int *ibuf; /* array */
int blen; /* number of elements in ibuf */
int nr_substrings; /* number of substrings in the pattern */
{
register char *cp;
int i = 0;
bool lastone = false;
blen--; /* for terminating END_OF_FIELDS */
cp = s;
do
{
for (;; cp++)
{
if (*cp == ',')
{
*cp = '\0';
break;
}
if (*cp == '\0')
{
lastone = true;
break;
}
}
if (i < blen)
{
int val = atoi(s);
if (val < 0 || val >= nr_substrings)
{
syserr("field (%d) out of range, only %d substrings in pattern",
val, nr_substrings);
return -1;
}
ibuf[i++] = val;
}
else
{
syserr("too many fields, %d max", blen);
return -1;
}
s = ++cp;
} while (!lastone);
ibuf[i] = END_OF_FIELDS;
return i;
}
bool
regex_map_init(map, ap)
MAP *map;
char *ap;
{
int regerr;
struct regex_map *map_p;
register char *p;
char *sub_param = NULL;
int pflags;
static char defdstr[] = { (char) DEFAULT_DELIM, '\0' };
if (tTd(38, 2))
sm_dprintf("regex_map_init: mapname '%s', args '%s'\n",
map->map_mname, ap);
pflags = REG_ICASE | REG_EXTENDED | REG_NOSUB;
p = ap;
map_p = (struct regex_map *) xnalloc(sizeof(*map_p));
map_p->regex_pattern_buf = (regex_t *)xnalloc(sizeof(regex_t));
for (;;)
{
while (isascii(*p) && isspace(*p))
p++;
if (*p != '-')
break;
switch (*++p)
{
case 'n': /* not */
map->map_mflags |= MF_REGEX_NOT;
break;
case 'f': /* case sensitive */
map->map_mflags |= MF_NOFOLDCASE;
pflags &= ~REG_ICASE;
break;
case 'b': /* basic regular expressions */
pflags &= ~REG_EXTENDED;
break;
case 's': /* substring match () syntax */
sub_param = ++p;
pflags &= ~REG_NOSUB;
break;
case 'd': /* delimiter */
map_p->regex_delim = ++p;
break;
case 'a': /* map append */
map->map_app = ++p;
break;
case 'm': /* matchonly */
map->map_mflags |= MF_MATCHONLY;
break;
case 'q':
map->map_mflags |= MF_KEEPQUOTES;
break;
case 'S':
map->map_spacesub = *++p;
break;
case 'D':
map->map_mflags |= MF_DEFER;
break;
}
while (*p != '\0' && !(isascii(*p) && isspace(*p)))
p++;
if (*p != '\0')
*p++ = '\0';
}
if (tTd(38, 3))
sm_dprintf("regex_map_init: compile '%s' 0x%x\n", p, pflags);
if ((regerr = regcomp(map_p->regex_pattern_buf, p, pflags)) != 0)
{
/* Errorhandling */
char errbuf[ERRBUF_SIZE];
(void) regerror(regerr, map_p->regex_pattern_buf,
errbuf, sizeof(errbuf));
syserr("pattern-compile-error: %s", errbuf);
sm_free(map_p->regex_pattern_buf); /* XXX */
sm_free(map_p); /* XXX */
return false;
}
if (map->map_app != NULL)
map->map_app = newstr(map->map_app);
if (map_p->regex_delim != NULL)
map_p->regex_delim = newstr(map_p->regex_delim);
else
map_p->regex_delim = defdstr;
if (!bitset(REG_NOSUB, pflags))
{
/* substring matching */
int substrings;
int *fields = (int *) xalloc(sizeof(int) * (MAX_MATCH + 1));
substrings = map_p->regex_pattern_buf->re_nsub + 1;
if (tTd(38, 3))
sm_dprintf("regex_map_init: nr of substrings %d\n",
substrings);
if (substrings >= MAX_MATCH)
{
syserr("too many substrings, %d max", MAX_MATCH);
sm_free(map_p->regex_pattern_buf); /* XXX */
sm_free(map_p); /* XXX */
return false;
}
if (sub_param != NULL && sub_param[0] != '\0')
{
/* optional parameter -sfields */
if (parse_fields(sub_param, fields,
MAX_MATCH + 1, substrings) == -1)
return false;
}
else
{
int i;
/* set default fields */
for (i = 0; i < substrings; i++)
fields[i] = i;
fields[i] = END_OF_FIELDS;
}
map_p->regex_subfields = fields;
if (tTd(38, 3))
{
int *ip;
sm_dprintf("regex_map_init: subfields");
for (ip = fields; *ip != END_OF_FIELDS; ip++)
sm_dprintf(" %d", *ip);
sm_dprintf("\n");
}
}
map->map_db1 = (ARBPTR_T) map_p; /* dirty hack */
return true;
}
static char *
regex_map_rewrite(map, s, slen, av)
MAP *map;
const char *s;
size_t slen;
char **av;
{
if (bitset(MF_MATCHONLY, map->map_mflags))
return map_rewrite(map, av[0], strlen(av[0]), NULL);
else
return map_rewrite(map, s, slen, av);
}
char *
regex_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
int reg_res;
struct regex_map *map_p;
regmatch_t pmatch[MAX_MATCH];
if (tTd(38, 20))
{
char **cpp;
sm_dprintf("regex_map_lookup: key '%s'\n", name);
for (cpp = av; cpp != NULL && *cpp != NULL; cpp++)
sm_dprintf("regex_map_lookup: arg '%s'\n", *cpp);
}
map_p = (struct regex_map *)(map->map_db1);
reg_res = regexec(map_p->regex_pattern_buf,
name, MAX_MATCH, pmatch, 0);
if (bitset(MF_REGEX_NOT, map->map_mflags))
{
/* option -n */
if (reg_res == REG_NOMATCH)
return regex_map_rewrite(map, "", (size_t) 0, av);
else
return NULL;
}
if (reg_res == REG_NOMATCH)
return NULL;
if (map_p->regex_subfields != NULL)
{
/* option -s */
static char retbuf[MAXNAME];
int fields[MAX_MATCH + 1];
bool first = true;
int anglecnt = 0, cmntcnt = 0, spacecnt = 0;
bool quotemode = false, bslashmode = false;
register char *dp, *sp;
char *endp, *ldp;
int *ip;
dp = retbuf;
ldp = retbuf + sizeof(retbuf) - 1;
if (av[1] != NULL)
{
if (parse_fields(av[1], fields, MAX_MATCH + 1,
(int) map_p->regex_pattern_buf->re_nsub + 1) == -1)
{
*statp = EX_CONFIG;
return NULL;
}
ip = fields;
}
else
ip = map_p->regex_subfields;
for ( ; *ip != END_OF_FIELDS; ip++)
{
if (!first)
{
for (sp = map_p->regex_delim; *sp; sp++)
{
if (dp < ldp)
*dp++ = *sp;
}
}
else
first = false;
if (*ip >= MAX_MATCH ||
pmatch[*ip].rm_so < 0 || pmatch[*ip].rm_eo < 0)
continue;
sp = name + pmatch[*ip].rm_so;
endp = name + pmatch[*ip].rm_eo;
for (; endp > sp; sp++)
{
if (dp < ldp)
{
if (bslashmode)
{
*dp++ = *sp;
bslashmode = false;
}
else if (quotemode && *sp != '"' &&
*sp != '\\')
{
*dp++ = *sp;
}
else switch (*dp++ = *sp)
{
case '\\':
bslashmode = true;
break;
case '(':
cmntcnt++;
break;
case ')':
cmntcnt--;
break;
case '<':
anglecnt++;
break;
case '>':
anglecnt--;
break;
case ' ':
spacecnt++;
break;
case '"':
quotemode = !quotemode;
break;
}
}
}
}
if (anglecnt != 0 || cmntcnt != 0 || quotemode ||
bslashmode || spacecnt != 0)
{
sm_syslog(LOG_WARNING, NOQID,
"Warning: regex may cause prescan() failure map=%s lookup=%s",
map->map_mname, name);
return NULL;
}
*dp = '\0';
return regex_map_rewrite(map, retbuf, strlen(retbuf), av);
}
return regex_map_rewrite(map, "", (size_t)0, av);
}
#endif /* MAP_REGEX */
/*
** NSD modules
*/
#if MAP_NSD
# include <ndbm.h>
# define _DATUM_DEFINED
# include <ns_api.h>
typedef struct ns_map_list
{
ns_map_t *map; /* XXX ns_ ? */
char *mapname;
struct ns_map_list *next;
} ns_map_list_t;
static ns_map_t *
ns_map_t_find(mapname)
char *mapname;
{
static ns_map_list_t *ns_maps = NULL;
ns_map_list_t *ns_map;
/* walk the list of maps looking for the correctly named map */
for (ns_map = ns_maps; ns_map != NULL; ns_map = ns_map->next)
{
if (strcmp(ns_map->mapname, mapname) == 0)
break;
}
/* if we are looking at a NULL ns_map_list_t, then create a new one */
if (ns_map == NULL)
{
ns_map = (ns_map_list_t *) xalloc(sizeof(*ns_map));
ns_map->mapname = newstr(mapname);
ns_map->map = (ns_map_t *) xalloc(sizeof(*ns_map->map));
memset(ns_map->map, '\0', sizeof(*ns_map->map));
ns_map->next = ns_maps;
ns_maps = ns_map;
}
return ns_map->map;
}
char *
nsd_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
int buflen, r;
char *p;
ns_map_t *ns_map;
char keybuf[MAXNAME + 1];
char buf[MAXLINE];
if (tTd(38, 20))
sm_dprintf("nsd_map_lookup(%s, %s)\n", map->map_mname, name);
buflen = strlen(name);
if (buflen > sizeof(keybuf) - 1)
buflen = sizeof(keybuf) - 1; /* XXX simply cut off? */
memmove(keybuf, name, buflen);
keybuf[buflen] = '\0';
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
makelower(keybuf);
ns_map = ns_map_t_find(map->map_file);
if (ns_map == NULL)
{
if (tTd(38, 20))
sm_dprintf("nsd_map_t_find failed\n");
*statp = EX_UNAVAILABLE;
return NULL;
}
r = ns_lookup(ns_map, NULL, map->map_file, keybuf, NULL,
buf, sizeof(buf));
if (r == NS_UNAVAIL || r == NS_TRYAGAIN)
{
*statp = EX_TEMPFAIL;
return NULL;
}
if (r == NS_BADREQ
# ifdef NS_NOPERM
|| r == NS_NOPERM
# endif /* NS_NOPERM */
)
{
*statp = EX_CONFIG;
return NULL;
}
if (r != NS_SUCCESS)
{
*statp = EX_NOTFOUND;
return NULL;
}
*statp = EX_OK;
/* Null out trailing \n */
if ((p = strchr(buf, '\n')) != NULL)
*p = '\0';
return map_rewrite(map, buf, strlen(buf), av);
}
#endif /* MAP_NSD */
char *
arith_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
long r;
long v[2];
bool res = false;
bool boolres;
static char result[16];
char **cpp;
if (tTd(38, 2))
{
sm_dprintf("arith_map_lookup: key '%s'\n", name);
for (cpp = av; cpp != NULL && *cpp != NULL; cpp++)
sm_dprintf("arith_map_lookup: arg '%s'\n", *cpp);
}
r = 0;
boolres = false;
cpp = av;
*statp = EX_OK;
/*
** read arguments for arith map
** - no check is made whether they are really numbers
** - just ignores args after the second
*/
for (++cpp; cpp != NULL && *cpp != NULL && r < 2; cpp++)
v[r++] = strtol(*cpp, NULL, 0);
/* operator and (at least) two operands given? */
if (name != NULL && r == 2)
{
switch (*name)
{
case '|':
r = v[0] | v[1];
break;
case '&':
r = v[0] & v[1];
break;
case '%':
if (v[1] == 0)
return NULL;
r = v[0] % v[1];
break;
case '+':
r = v[0] + v[1];
break;
case '-':
r = v[0] - v[1];
break;
case '*':
r = v[0] * v[1];
break;
case '/':
if (v[1] == 0)
return NULL;
r = v[0] / v[1];
break;
case 'l':
res = v[0] < v[1];
boolres = true;
break;
case '=':
res = v[0] == v[1];
boolres = true;
break;
case 'r':
r = v[1] - v[0] + 1;
if (r <= 0)
return NULL;
r = get_random() % r + v[0];
break;
default:
/* XXX */
*statp = EX_CONFIG;
if (LogLevel > 10)
sm_syslog(LOG_WARNING, NOQID,
"arith_map: unknown operator %c",
(isascii(*name) && isprint(*name)) ?
*name : '?');
return NULL;
}
if (boolres)
(void) sm_snprintf(result, sizeof(result),
res ? "TRUE" : "FALSE");
else
(void) sm_snprintf(result, sizeof(result), "%ld", r);
return result;
}
*statp = EX_CONFIG;
return NULL;
}
#if SOCKETMAP
# if NETINET || NETINET6
# include <arpa/inet.h>
# endif /* NETINET || NETINET6 */
# define socket_map_next map_stack[0]
/*
** SOCKET_MAP_OPEN -- open socket table
*/
bool
socket_map_open(map, mode)
MAP *map;
int mode;
{
STAB *s;
int sock = 0;
SOCKADDR_LEN_T addrlen = 0;
int addrno = 0;
int save_errno;
char *p;
char *colon;
char *at;
struct hostent *hp = NULL;
SOCKADDR addr;
if (tTd(38, 2))
sm_dprintf("socket_map_open(%s, %s, %d)\n",
map->map_mname, map->map_file, mode);
mode &= O_ACCMODE;
/* sendmail doesn't have the ability to write to SOCKET (yet) */
if (mode != O_RDONLY)
{
/* issue a pseudo-error message */
errno = SM_EMAPCANTWRITE;
return false;
}
if (*map->map_file == '\0')
{
syserr("socket map \"%s\": empty or missing socket information",
map->map_mname);
return false;
}
s = socket_map_findconn(map->map_file);
if (s->s_socketmap != NULL)
{
/* Copy open connection */
map->map_db1 = s->s_socketmap->map_db1;
/* Add this map as head of linked list */
map->socket_map_next = s->s_socketmap;
s->s_socketmap = map;
if (tTd(38, 2))
sm_dprintf("using cached connection\n");
return true;
}
if (tTd(38, 2))
sm_dprintf("opening new connection\n");
/* following code is ripped from milter.c */
/* XXX It should be put in a library... */
/* protocol:filename or protocol:port@host */
memset(&addr, '\0', sizeof(addr));
p = map->map_file;
colon = strchr(p, ':');
if (colon != NULL)
{
*colon = '\0';
if (*p == '\0')
{
# if NETUNIX
/* default to AF_UNIX */
addr.sa.sa_family = AF_UNIX;
# else /* NETUNIX */
# if NETINET
/* default to AF_INET */
addr.sa.sa_family = AF_INET;
# else /* NETINET */
# if NETINET6
/* default to AF_INET6 */
addr.sa.sa_family = AF_INET6;
# else /* NETINET6 */
/* no protocols available */
syserr("socket map \"%s\": no valid socket protocols available",
map->map_mname);
return false;
# endif /* NETINET6 */
# endif /* NETINET */
# endif /* NETUNIX */
}
# if NETUNIX
else if (sm_strcasecmp(p, "unix") == 0 ||
sm_strcasecmp(p, "local") == 0)
addr.sa.sa_family = AF_UNIX;
# endif /* NETUNIX */
# if NETINET
else if (sm_strcasecmp(p, "inet") == 0)
addr.sa.sa_family = AF_INET;
# endif /* NETINET */
# if NETINET6
else if (sm_strcasecmp(p, "inet6") == 0)
addr.sa.sa_family = AF_INET6;
# endif /* NETINET6 */
else
{
# ifdef EPROTONOSUPPORT
errno = EPROTONOSUPPORT;
# else /* EPROTONOSUPPORT */
errno = EINVAL;
# endif /* EPROTONOSUPPORT */
syserr("socket map \"%s\": unknown socket type %s",
map->map_mname, p);
return false;
}
*colon++ = ':';
}
else
{
colon = p;
#if NETUNIX
/* default to AF_UNIX */
addr.sa.sa_family = AF_UNIX;
#else /* NETUNIX */
# if NETINET
/* default to AF_INET */
addr.sa.sa_family = AF_INET;
# else /* NETINET */
# if NETINET6
/* default to AF_INET6 */
addr.sa.sa_family = AF_INET6;
# else /* NETINET6 */
syserr("socket map \"%s\": unknown socket type %s",
map->map_mname, p);
return false;
# endif /* NETINET6 */
# endif /* NETINET */
#endif /* NETUNIX */
}
# if NETUNIX
if (addr.sa.sa_family == AF_UNIX)
{
long sff = SFF_SAFEDIRPATH|SFF_OPENASROOT|SFF_NOLINK|SFF_EXECOK;
at = colon;
if (strlen(colon) >= sizeof(addr.sunix.sun_path))
{
syserr("socket map \"%s\": local socket name %s too long",
map->map_mname, colon);
return false;
}
errno = safefile(colon, RunAsUid, RunAsGid, RunAsUserName, sff,
S_IRUSR|S_IWUSR, NULL);
if (errno != 0)
{
/* if not safe, don't create */
syserr("socket map \"%s\": local socket name %s unsafe",
map->map_mname, colon);
return false;
}
(void) sm_strlcpy(addr.sunix.sun_path, colon,
sizeof(addr.sunix.sun_path));
addrlen = sizeof(struct sockaddr_un);
}
else
# endif /* NETUNIX */
# if NETINET || NETINET6
if (false
# if NETINET
|| addr.sa.sa_family == AF_INET
# endif /* NETINET */
# if NETINET6
|| addr.sa.sa_family == AF_INET6
# endif /* NETINET6 */
)
{
unsigned short port;
/* Parse port@host */
at = strchr(colon, '@');
if (at == NULL)
{
syserr("socket map \"%s\": bad address %s (expected port@host)",
map->map_mname, colon);
return false;
}
*at = '\0';
if (isascii(*colon) && isdigit(*colon))
port = htons((unsigned short) atoi(colon));
else
{
# ifdef NO_GETSERVBYNAME
syserr("socket map \"%s\": invalid port number %s",
map->map_mname, colon);
return false;
# else /* NO_GETSERVBYNAME */
register struct servent *sp;
sp = getservbyname(colon, "tcp");
if (sp == NULL)
{
syserr("socket map \"%s\": unknown port name %s",
map->map_mname, colon);
return false;
}
port = sp->s_port;
# endif /* NO_GETSERVBYNAME */
}
*at++ = '@';
if (*at == '[')
{
char *end;
end = strchr(at, ']');
if (end != NULL)
{
bool found = false;
# if NETINET
unsigned long hid = INADDR_NONE;
# endif /* NETINET */
# if NETINET6
struct sockaddr_in6 hid6;
# endif /* NETINET6 */
*end = '\0';
# if NETINET
if (addr.sa.sa_family == AF_INET &&
(hid = inet_addr(&at[1])) != INADDR_NONE)
{
addr.sin.sin_addr.s_addr = hid;
addr.sin.sin_port = port;
found = true;
}
# endif /* NETINET */
# if NETINET6
(void) memset(&hid6, '\0', sizeof(hid6));
if (addr.sa.sa_family == AF_INET6 &&
anynet_pton(AF_INET6, &at[1],
&hid6.sin6_addr) == 1)
{
addr.sin6.sin6_addr = hid6.sin6_addr;
addr.sin6.sin6_port = port;
found = true;
}
# endif /* NETINET6 */
*end = ']';
if (!found)
{
syserr("socket map \"%s\": Invalid numeric domain spec \"%s\"",
map->map_mname, at);
return false;
}
}
else
{
syserr("socket map \"%s\": Invalid numeric domain spec \"%s\"",
map->map_mname, at);
return false;
}
}
else
{
hp = sm_gethostbyname(at, addr.sa.sa_family);
if (hp == NULL)
{
syserr("socket map \"%s\": Unknown host name %s",
map->map_mname, at);
return false;
}
addr.sa.sa_family = hp->h_addrtype;
switch (hp->h_addrtype)
{
# if NETINET
case AF_INET:
memmove(&addr.sin.sin_addr,
hp->h_addr, INADDRSZ);
addr.sin.sin_port = port;
addrlen = sizeof(struct sockaddr_in);
addrno = 1;
break;
# endif /* NETINET */
# if NETINET6
case AF_INET6:
memmove(&addr.sin6.sin6_addr,
hp->h_addr, IN6ADDRSZ);
addr.sin6.sin6_port = port;
addrlen = sizeof(struct sockaddr_in6);
addrno = 1;
break;
# endif /* NETINET6 */
default:
syserr("socket map \"%s\": Unknown protocol for %s (%d)",
map->map_mname, at, hp->h_addrtype);
# if NETINET6
freehostent(hp);
# endif /* NETINET6 */
return false;
}
}
}
else
# endif /* NETINET || NETINET6 */
{
syserr("socket map \"%s\": unknown socket protocol",
map->map_mname);
return false;
}
/* nope, actually connecting */
for (;;)
{
sock = socket(addr.sa.sa_family, SOCK_STREAM, 0);
if (sock < 0)
{
save_errno = errno;
if (tTd(38, 5))
sm_dprintf("socket map \"%s\": error creating socket: %s\n",
map->map_mname,
sm_errstring(save_errno));
# if NETINET6
if (hp != NULL)
freehostent(hp);
# endif /* NETINET6 */
return false;
}
if (connect(sock, (struct sockaddr *) &addr, addrlen) >= 0)
break;
/* couldn't connect.... try next address */
save_errno = errno;
p = CurHostName;
CurHostName = at;
if (tTd(38, 5))
sm_dprintf("socket_open (%s): open %s failed: %s\n",
map->map_mname, at, sm_errstring(save_errno));
CurHostName = p;
(void) close(sock);
/* try next address */
if (hp != NULL && hp->h_addr_list[addrno] != NULL)
{
switch (addr.sa.sa_family)
{
# if NETINET
case AF_INET:
memmove(&addr.sin.sin_addr,
hp->h_addr_list[addrno++],
INADDRSZ);
break;
# endif /* NETINET */
# if NETINET6
case AF_INET6:
memmove(&addr.sin6.sin6_addr,
hp->h_addr_list[addrno++],
IN6ADDRSZ);
break;
# endif /* NETINET6 */
default:
if (tTd(38, 5))
sm_dprintf("socket map \"%s\": Unknown protocol for %s (%d)\n",
map->map_mname, at,
hp->h_addrtype);
# if NETINET6
freehostent(hp);
# endif /* NETINET6 */
return false;
}
continue;
}
p = CurHostName;
CurHostName = at;
if (tTd(38, 5))
sm_dprintf("socket map \"%s\": error connecting to socket map: %s\n",
map->map_mname, sm_errstring(save_errno));
CurHostName = p;
# if NETINET6
if (hp != NULL)
freehostent(hp);
# endif /* NETINET6 */
return false;
}
# if NETINET6
if (hp != NULL)
{
freehostent(hp);
hp = NULL;
}
# endif /* NETINET6 */
if ((map->map_db1 = (ARBPTR_T) sm_io_open(SmFtStdiofd,
SM_TIME_DEFAULT,
(void *) &sock,
SM_IO_RDWR,
NULL)) == NULL)
{
close(sock);
if (tTd(38, 2))
sm_dprintf("socket_open (%s): failed to create stream: %s\n",
map->map_mname, sm_errstring(errno));
return false;
}
/* Save connection for reuse */
s->s_socketmap = map;
return true;
}
/*
** SOCKET_MAP_FINDCONN -- find a SOCKET connection to the server
**
** Cache SOCKET connections based on the connection specifier
** and PID so we don't have multiple connections open to
** the same server for different maps. Need a separate connection
** per PID since a parent process may close the map before the
** child is done with it.
**
** Parameters:
** conn -- SOCKET map connection specifier
**
** Returns:
** Symbol table entry for the SOCKET connection.
*/
static STAB *
socket_map_findconn(conn)
const char *conn;
{
char *nbuf;
STAB *SM_NONVOLATILE s = NULL;
nbuf = sm_stringf_x("%s%c%d", conn, CONDELSE, (int) CurrentPid);
SM_TRY
s = stab(nbuf, ST_SOCKETMAP, ST_ENTER);
SM_FINALLY
sm_free(nbuf);
SM_END_TRY
return s;
}
/*
** SOCKET_MAP_CLOSE -- close the socket
*/
void
socket_map_close(map)
MAP *map;
{
STAB *s;
MAP *smap;
if (tTd(38, 20))
sm_dprintf("socket_map_close(%s), pid=%ld\n", map->map_file,
(long) CurrentPid);
/* Check if already closed */
if (map->map_db1 == NULL)
{
if (tTd(38, 20))
sm_dprintf("socket_map_close(%s) already closed\n",
map->map_file);
return;
}
sm_io_close((SM_FILE_T *)map->map_db1, SM_TIME_DEFAULT);
/* Mark all the maps that share the connection as closed */
s = socket_map_findconn(map->map_file);
smap = s->s_socketmap;
while (smap != NULL)
{
MAP *next;
if (tTd(38, 2) && smap != map)
sm_dprintf("socket_map_close(%s): closed %s (shared SOCKET connection)\n",
map->map_mname, smap->map_mname);
smap->map_mflags &= ~(MF_OPEN|MF_WRITABLE);
smap->map_db1 = NULL;
next = smap->socket_map_next;
smap->socket_map_next = NULL;
smap = next;
}
s->s_socketmap = NULL;
}
/*
** SOCKET_MAP_LOOKUP -- look up a datum in a SOCKET table
*/
char *
socket_map_lookup(map, name, av, statp)
MAP *map;
char *name;
char **av;
int *statp;
{
unsigned int nettolen, replylen, recvlen;
char *replybuf, *rval, *value, *status, *key;
SM_FILE_T *f;
char keybuf[MAXNAME + 1];
replybuf = NULL;
rval = NULL;
f = (SM_FILE_T *)map->map_db1;
if (tTd(38, 20))
sm_dprintf("socket_map_lookup(%s, %s) %s\n",
map->map_mname, name, map->map_file);
if (!bitset(MF_NOFOLDCASE, map->map_mflags))
{
nettolen = strlen(name);
if (nettolen > sizeof(keybuf) - 1)
nettolen = sizeof(keybuf) - 1;
memmove(keybuf, name, nettolen);
keybuf[nettolen] = '\0';
makelower(keybuf);
key = keybuf;
}
else
key = name;
nettolen = strlen(map->map_mname) + 1 + strlen(key);
SM_ASSERT(nettolen > strlen(map->map_mname));
SM_ASSERT(nettolen > strlen(key));
if ((sm_io_fprintf(f, SM_TIME_DEFAULT, "%u:%s %s,",
nettolen, map->map_mname, key) == SM_IO_EOF) ||
(sm_io_flush(f, SM_TIME_DEFAULT) != 0) ||
(sm_io_error(f)))
{
syserr("451 4.3.0 socket_map_lookup(%s): failed to send lookup request",
map->map_mname);
*statp = EX_TEMPFAIL;
goto errcl;
}
if (sm_io_fscanf(f, SM_TIME_DEFAULT, "%9u", &replylen) != 1)
{
syserr("451 4.3.0 socket_map_lookup(%s): failed to read length parameter of reply",
map->map_mname);
*statp = EX_TEMPFAIL;
goto errcl;
}
if (replylen > SOCKETMAP_MAXL)
{
syserr("451 4.3.0 socket_map_lookup(%s): reply too long: %u",
map->map_mname, replylen);
*statp = EX_TEMPFAIL;
goto errcl;
}
if (sm_io_getc(f, SM_TIME_DEFAULT) != ':')
{
syserr("451 4.3.0 socket_map_lookup(%s): missing ':' in reply",
map->map_mname);
*statp = EX_TEMPFAIL;
goto error;
}
replybuf = (char *) sm_malloc(replylen + 1);
if (replybuf == NULL)
{
syserr("451 4.3.0 socket_map_lookup(%s): can't allocate %u bytes",
map->map_mname, replylen + 1);
*statp = EX_OSERR;
goto error;
}
recvlen = sm_io_read(f, SM_TIME_DEFAULT, replybuf, replylen);
if (recvlen < replylen)
{
syserr("451 4.3.0 socket_map_lookup(%s): received only %u of %u reply characters",
map->map_mname, recvlen, replylen);
*statp = EX_TEMPFAIL;
goto errcl;
}
if (sm_io_getc(f, SM_TIME_DEFAULT) != ',')
{
syserr("451 4.3.0 socket_map_lookup(%s): missing ',' in reply",
map->map_mname);
*statp = EX_TEMPFAIL;
goto errcl;
}
status = replybuf;
replybuf[recvlen] = '\0';
value = strchr(replybuf, ' ');
if (value != NULL)
{
*value = '\0';
value++;
}
if (strcmp(status, "OK") == 0)
{
*statp = EX_OK;
/* collect the return value */
if (bitset(MF_MATCHONLY, map->map_mflags))
rval = map_rewrite(map, key, strlen(key), NULL);
else
rval = map_rewrite(map, value, strlen(value), av);
}
else if (strcmp(status, "NOTFOUND") == 0)
{
*statp = EX_NOTFOUND;
if (tTd(38, 20))
sm_dprintf("socket_map_lookup(%s): %s not found\n",
map->map_mname, key);
}
else
{
if (tTd(38, 5))
sm_dprintf("socket_map_lookup(%s, %s): server returned error: type=%s, reason=%s\n",
map->map_mname, key, status,
value ? value : "");
if ((strcmp(status, "TEMP") == 0) ||
(strcmp(status, "TIMEOUT") == 0))
*statp = EX_TEMPFAIL;
else if(strcmp(status, "PERM") == 0)
*statp = EX_UNAVAILABLE;
else
*statp = EX_PROTOCOL;
}
if (replybuf != NULL)
sm_free(replybuf);
return rval;
errcl:
socket_map_close(map);
error:
if (replybuf != NULL)
sm_free(replybuf);
return rval;
}
#endif /* SOCKETMAP */