| Current Path : /usr/src/crypto/heimdal/appl/ftp/ftp/ |
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 : //usr/src/crypto/heimdal/appl/ftp/ftp/ruserpass.c |
/*
* Copyright (c) 1985, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "ftp_locl.h"
RCSID("$Id: ruserpass.c 16161 2005-10-12 09:44:24Z joda $");
static int token (void);
static FILE *cfile;
#define DEFAULT 1
#define LOGIN 2
#define PASSWD 3
#define ACCOUNT 4
#define MACDEF 5
#define PROT 6
#define ID 10
#define MACH 11
static char tokval[100];
static struct toktab {
char *tokstr;
int tval;
} toktab[]= {
{ "default", DEFAULT },
{ "login", LOGIN },
{ "password", PASSWD },
{ "passwd", PASSWD },
{ "account", ACCOUNT },
{ "machine", MACH },
{ "macdef", MACDEF },
{ "prot", PROT },
{ NULL, 0 }
};
/*
* Write a copy of the hostname into `hostname, sz' and return a guess
* as to the `domain' of that hostname.
*/
static char *
guess_domain (char *hostname_str, size_t sz)
{
struct addrinfo *ai, *a;
struct addrinfo hints;
int error;
char *dot;
if (gethostname (hostname_str, sz) < 0) {
strlcpy (hostname_str, "", sz);
return "";
}
dot = strchr (hostname_str, '.');
if (dot != NULL)
return dot + 1;
memset (&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME;
error = getaddrinfo (hostname_str, NULL, &hints, &ai);
if (error)
return hostname_str;
for (a = ai; a != NULL; a = a->ai_next)
if (a->ai_canonname != NULL) {
strlcpy (hostname_str, ai->ai_canonname, sz);
break;
}
freeaddrinfo (ai);
dot = strchr (hostname_str, '.');
if (dot != NULL)
return dot + 1;
else
return hostname_str;
}
int
ruserpass(char *host, char **aname, char **apass, char **aacct)
{
char *hdir, buf[BUFSIZ], *tmp;
int t, i, c, usedefault = 0;
struct stat stb;
mydomain = guess_domain (myhostname, MaxHostNameLen);
hdir = getenv("HOME");
if (hdir == NULL)
hdir = ".";
snprintf(buf, sizeof(buf), "%s/.netrc", hdir);
cfile = fopen(buf, "r");
if (cfile == NULL) {
if (errno != ENOENT)
warn("%s", buf);
return (0);
}
next:
while ((t = token())) switch(t) {
case DEFAULT:
usedefault = 1;
/* FALL THROUGH */
case MACH:
if (!usedefault) {
if (token() != ID)
continue;
/*
* Allow match either for user's input host name
* or official hostname. Also allow match of
* incompletely-specified host in local domain.
*/
if (strcasecmp(host, tokval) == 0)
goto match;
if (strcasecmp(hostname, tokval) == 0)
goto match;
if ((tmp = strchr(hostname, '.')) != NULL &&
tmp++ &&
strcasecmp(tmp, mydomain) == 0 &&
strncasecmp(hostname, tokval, tmp-hostname) == 0 &&
tokval[tmp - hostname] == '\0')
goto match;
if ((tmp = strchr(host, '.')) != NULL &&
tmp++ &&
strcasecmp(tmp, mydomain) == 0 &&
strncasecmp(host, tokval, tmp - host) == 0 &&
tokval[tmp - host] == '\0')
goto match;
continue;
}
match:
while ((t = token()) && t != MACH && t != DEFAULT) switch(t) {
case LOGIN:
if (token()) {
if (*aname == 0) {
*aname = strdup(tokval);
} else {
if (strcmp(*aname, tokval))
goto next;
}
}
break;
case PASSWD:
if ((*aname == NULL || strcmp(*aname, "anonymous")) &&
fstat(fileno(cfile), &stb) >= 0 &&
(stb.st_mode & 077) != 0) {
warnx("Error: .netrc file is readable by others.");
warnx("Remove password or make file unreadable by others.");
goto bad;
}
if (token() && *apass == 0) {
*apass = strdup(tokval);
}
break;
case ACCOUNT:
if (fstat(fileno(cfile), &stb) >= 0
&& (stb.st_mode & 077) != 0) {
warnx("Error: .netrc file is readable by others.");
warnx("Remove account or make file unreadable by others.");
goto bad;
}
if (token() && *aacct == 0) {
*aacct = strdup(tokval);
}
break;
case MACDEF:
if (proxy) {
fclose(cfile);
return (0);
}
while ((c=getc(cfile)) != EOF &&
(c == ' ' || c == '\t'));
if (c == EOF || c == '\n') {
printf("Missing macdef name argument.\n");
goto bad;
}
if (macnum == 16) {
printf("Limit of 16 macros have already been defined\n");
goto bad;
}
tmp = macros[macnum].mac_name;
*tmp++ = c;
for (i=0; i < 8 && (c=getc(cfile)) != EOF &&
!isspace(c); ++i) {
*tmp++ = c;
}
if (c == EOF) {
printf("Macro definition missing null line terminator.\n");
goto bad;
}
*tmp = '\0';
if (c != '\n') {
while ((c=getc(cfile)) != EOF && c != '\n');
}
if (c == EOF) {
printf("Macro definition missing null line terminator.\n");
goto bad;
}
if (macnum == 0) {
macros[macnum].mac_start = macbuf;
}
else {
macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
}
tmp = macros[macnum].mac_start;
while (tmp != macbuf + 4096) {
if ((c=getc(cfile)) == EOF) {
printf("Macro definition missing null line terminator.\n");
goto bad;
}
*tmp = c;
if (*tmp == '\n') {
if (*(tmp-1) == '\0') {
macros[macnum++].mac_end = tmp - 1;
break;
}
*tmp = '\0';
}
tmp++;
}
if (tmp == macbuf + 4096) {
printf("4K macro buffer exceeded\n");
goto bad;
}
break;
case PROT:
token();
if(doencrypt == 0 && sec_request_prot(tokval) < 0)
warnx("Unknown protection level \"%s\"", tokval);
break;
default:
warnx("Unknown .netrc keyword %s", tokval);
break;
}
goto done;
}
done:
fclose(cfile);
return (0);
bad:
fclose(cfile);
return (-1);
}
static int
token(void)
{
char *cp;
int c;
struct toktab *t;
if (feof(cfile) || ferror(cfile))
return (0);
while ((c = getc(cfile)) != EOF &&
(c == '\n' || c == '\t' || c == ' ' || c == ','))
continue;
if (c == EOF)
return (0);
cp = tokval;
if (c == '"') {
while ((c = getc(cfile)) != EOF && c != '"') {
if (c == '\\')
c = getc(cfile);
*cp++ = c;
}
} else {
*cp++ = c;
while ((c = getc(cfile)) != EOF
&& c != '\n' && c != '\t' && c != ' ' && c != ',') {
if (c == '\\')
c = getc(cfile);
*cp++ = c;
}
}
*cp = 0;
if (tokval[0] == 0)
return (0);
for (t = toktab; t->tokstr; t++)
if (!strcmp(t->tokstr, tokval))
return (t->tval);
return (ID);
}