| Current Path : /usr/src/usr.sbin/lpr/common_source/ |
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/usr.sbin/lpr/common_source/displayq.c |
/*
* Copyright (c) 1983, 1993
* 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.
* 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.
*/
#if 0
#ifndef lint
static char sccsid[] = "@(#)displayq.c 8.4 (Berkeley) 4/28/95";
#endif /* not lint */
#endif
#include "lp.cdefs.h" /* A cross-platform version of <sys/cdefs.h> */
__FBSDID("$FreeBSD: release/9.1.0/usr.sbin/lpr/common_source/displayq.c 216372 2010-12-11 09:38:12Z joel $");
#include <sys/param.h>
#include <sys/stat.h>
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define psignal foil_gcc_psignal
#define sys_siglist foil_gcc_siglist
#include <unistd.h>
#undef psignal
#undef sys_siglist
#include "lp.h"
#include "lp.local.h"
#include "pathnames.h"
/*
* Routines to display the state of the queue.
*/
#define JOBCOL 40 /* column for job # in -l format */
#define OWNCOL 7 /* start of Owner column in normal */
#define SIZCOL 62 /* start of Size column in normal */
/*
* isprint() takes a parameter of 'int', but expect values in the range
* of unsigned char. Define a wrapper which takes a value of type 'char',
* whether signed or unsigned, and ensure it ends up in the right range.
*/
#define isprintch(Anychar) isprint((u_char)(Anychar))
/*
* Stuff for handling job specifications
*/
extern uid_t uid, euid;
static int col; /* column on screen */
static char current[MAXNAMLEN+1]; /* current file being printed */
static char file[MAXNAMLEN+1]; /* print file name */
static int first; /* first file in ``files'' column? */
static int garbage; /* # of garbage cf files */
static int lflag; /* long output option */
static int rank; /* order to be printed (-1=none, 0=active) */
static long totsize; /* total print job size in bytes */
static const char *head0 = "Rank Owner Job Files";
static const char *head1 = "Total Size\n";
static void alarmhandler(int _signo);
static void filtered_write(char *_obuffer, int _wlen, FILE *_wstream);
static void warn(const struct printer *_pp);
/*
* Display the current state of the queue. Format = 1 if long format.
*/
void
displayq(struct printer *pp, int format)
{
register struct jobqueue *q;
register int i, nitems, fd, ret;
char *cp, *endp;
struct jobqueue **queue;
struct stat statb;
FILE *fp;
void (*savealrm)(int);
lflag = format;
totsize = 0;
rank = -1;
if ((cp = checkremote(pp))) {
printf("Warning: %s\n", cp);
free(cp);
}
/*
* Print out local queue
* Find all the control files in the spooling directory
*/
seteuid(euid);
if (chdir(pp->spool_dir) < 0)
fatal(pp, "cannot chdir to spooling directory: %s",
strerror(errno));
seteuid(uid);
if ((nitems = getq(pp, &queue)) < 0)
fatal(pp, "cannot examine spooling area\n");
seteuid(euid);
ret = stat(pp->lock_file, &statb);
seteuid(uid);
if (ret >= 0) {
if (statb.st_mode & LFM_PRINT_DIS) {
if (pp->remote)
printf("%s: ", local_host);
printf("Warning: %s is down: ", pp->printer);
seteuid(euid);
fd = open(pp->status_file, O_RDONLY|O_SHLOCK);
seteuid(uid);
if (fd >= 0) {
while ((i = read(fd, line, sizeof(line))) > 0)
(void) fwrite(line, 1, i, stdout);
(void) close(fd); /* unlocks as well */
} else
putchar('\n');
}
if (statb.st_mode & LFM_QUEUE_DIS) {
if (pp->remote)
printf("%s: ", local_host);
printf("Warning: %s queue is turned off\n",
pp->printer);
}
}
if (nitems) {
seteuid(euid);
fp = fopen(pp->lock_file, "r");
seteuid(uid);
if (fp == NULL)
warn(pp);
else {
/* get daemon pid */
cp = current;
endp = cp + sizeof(current) - 1;
while ((i = getc(fp)) != EOF && i != '\n') {
if (cp < endp)
*cp++ = i;
}
*cp = '\0';
i = atoi(current);
if (i <= 0) {
ret = -1;
} else {
seteuid(euid);
ret = kill(i, 0);
seteuid(uid);
}
if (ret < 0) {
warn(pp);
} else {
/* read current file name */
cp = current;
endp = cp + sizeof(current) - 1;
while ((i = getc(fp)) != EOF && i != '\n') {
if (cp < endp)
*cp++ = i;
}
*cp = '\0';
/*
* Print the status file.
*/
if (pp->remote)
printf("%s: ", local_host);
seteuid(euid);
fd = open(pp->status_file, O_RDONLY|O_SHLOCK);
seteuid(uid);
if (fd >= 0) {
while ((i = read(fd, line,
sizeof(line))) > 0)
fwrite(line, 1, i, stdout);
close(fd); /* unlocks as well */
} else
putchar('\n');
}
(void) fclose(fp);
}
/*
* Now, examine the control files and print out the jobs to
* be done for each user.
*/
if (!lflag)
header();
for (i = 0; i < nitems; i++) {
q = queue[i];
inform(pp, q->job_cfname);
free(q);
}
free(queue);
}
if (!pp->remote) {
if (nitems == 0)
puts("no entries");
return;
}
/*
* Print foreign queue
* Note that a file in transit may show up in either queue.
*/
if (nitems)
putchar('\n');
(void) snprintf(line, sizeof(line), "%c%s", format ? '\4' : '\3',
pp->remote_queue);
cp = line;
for (i = 0; i < requests && cp-line+10 < sizeof(line) - 1; i++) {
cp += strlen(cp);
(void) sprintf(cp, " %d", requ[i]);
}
for (i = 0; i < users && cp - line + 1 + strlen(user[i]) <
sizeof(line) - 1; i++) {
cp += strlen(cp);
*cp++ = ' ';
(void) strcpy(cp, user[i]);
}
strcat(line, "\n");
savealrm = signal(SIGALRM, alarmhandler);
alarm(pp->conn_timeout);
fd = getport(pp, pp->remote_host, 0);
alarm(0);
(void)signal(SIGALRM, savealrm);
if (fd < 0) {
if (from_host != local_host)
printf("%s: ", local_host);
printf("connection to %s is down\n", pp->remote_host);
}
else {
i = strlen(line);
if (write(fd, line, i) != i)
fatal(pp, "Lost connection");
while ((i = read(fd, line, sizeof(line))) > 0)
filtered_write(line, i, stdout);
filtered_write(NULL, -1, stdout);
(void) close(fd);
}
}
/*
* The lpq-info read from remote hosts may contain unprintable characters,
* or carriage-returns instead of line-feeds. Clean those up before echoing
* the lpq-info line(s) to stdout. The info may also be missing any kind of
* end-of-line character. This also turns CRLF and LFCR into a plain LF.
*
* This routine may be called multiple times to process a single set of
* information, and after a set is finished this routine must be called
* one extra time with NULL specified as the buffer address.
*/
static void
filtered_write(char *wbuffer, int wlen, FILE *wstream)
{
static char lastchar, savedchar;
char *chkptr, *dest_end, *dest_ch, *nxtptr, *w_end;
int destlen;
char destbuf[BUFSIZ];
if (wbuffer == NULL) {
if (savedchar != '\0') {
if (savedchar == '\r')
savedchar = '\n';
fputc(savedchar, wstream);
lastchar = savedchar;
savedchar = '\0';
}
if (lastchar != '\0' && lastchar != '\n')
fputc('\n', wstream);
lastchar = '\0';
return;
}
dest_ch = &destbuf[0];
dest_end = dest_ch + sizeof(destbuf);
chkptr = wbuffer;
w_end = wbuffer + wlen;
lastchar = '\0';
if (savedchar != '\0') {
chkptr = &savedchar;
nxtptr = wbuffer;
} else
nxtptr = chkptr + 1;
while (chkptr < w_end) {
if (nxtptr < w_end) {
if ((*chkptr == '\r' && *nxtptr == '\n') ||
(*chkptr == '\n' && *nxtptr == '\r')) {
*dest_ch++ = '\n';
/* want to skip past that second character */
nxtptr++;
goto check_next;
}
} else {
/* This is the last byte in the buffer given on this
* call, so check if it could be the first-byte of a
* significant two-byte sequence. If it is, then
* don't write it out now, but save for checking in
* the next call.
*/
savedchar = '\0';
if (*chkptr == '\r' || *chkptr == '\n') {
savedchar = *chkptr;
break;
}
}
if (*chkptr == '\r')
*dest_ch++ = '\n';
#if 0 /* XXX - don't translate unprintable characters (yet) */
else if (*chkptr != '\t' && *chkptr != '\n' &&
!isprintch(*chkptr))
*dest_ch++ = '?';
#endif
else
*dest_ch++ = *chkptr;
check_next:
chkptr = nxtptr;
nxtptr = chkptr + 1;
if (dest_ch >= dest_end) {
destlen = dest_ch - &destbuf[0];
fwrite(destbuf, 1, destlen, wstream);
lastchar = destbuf[destlen - 1];
dest_ch = &destbuf[0];
}
}
destlen = dest_ch - &destbuf[0];
if (destlen > 0) {
fwrite(destbuf, 1, destlen, wstream);
lastchar = destbuf[destlen - 1];
}
}
/*
* Print a warning message if there is no daemon present.
*/
static void
warn(const struct printer *pp)
{
if (pp->remote)
printf("%s: ", local_host);
puts("Warning: no daemon present");
current[0] = '\0';
}
/*
* Print the header for the short listing format
*/
void
header(void)
{
printf("%s", head0);
col = strlen(head0)+1;
blankfill(SIZCOL);
printf("%s", head1);
}
void
inform(const struct printer *pp, char *cf)
{
int copycnt, jnum;
char savedname[MAXPATHLEN+1];
FILE *cfp;
/*
* There's a chance the control file has gone away
* in the meantime; if this is the case just keep going
*/
seteuid(euid);
if ((cfp = fopen(cf, "r")) == NULL)
return;
seteuid(uid);
if (rank < 0)
rank = 0;
if (pp->remote || garbage || strcmp(cf, current))
rank++;
/*
* The cf-file may include commands to print more than one datafile
* from the user. For each datafile, the cf-file contains at least
* one line which starts with some format-specifier ('a'-'z'), and
* a second line ('N'ame) which indicates the original name the user
* specified for that file. There can be multiple format-spec lines
* for a single Name-line, if the user requested multiple copies of
* that file. Standard lpr puts the format-spec line(s) before the
* Name-line, while lprNG puts the Name-line before the format-spec
* line(s). This section needs to handle the lines in either order.
*/
copycnt = 0;
file[0] = '\0';
savedname[0] = '\0';
jnum = calc_jobnum(cf, NULL);
while (getline(cfp)) {
switch (line[0]) {
case 'P': /* Was this file specified in the user's list? */
if (!inlist(line+1, cf)) {
fclose(cfp);
return;
}
if (lflag) {
printf("\n%s: ", line+1);
col = strlen(line+1) + 2;
prank(rank);
blankfill(JOBCOL);
printf(" [job %s]\n", cf+3);
} else {
col = 0;
prank(rank);
blankfill(OWNCOL);
printf("%-10s %-3d ", line+1, jnum);
col += 16;
first = 1;
}
continue;
default: /* some format specifer and file name? */
if (line[0] < 'a' || line[0] > 'z')
break;
if (copycnt == 0 || strcmp(file, line+1) != 0) {
strlcpy(file, line + 1, sizeof(file));
}
copycnt++;
/*
* deliberately 'continue' to another getline(), so
* all format-spec lines for this datafile are read
* in and counted before calling show()
*/
continue;
case 'N':
strlcpy(savedname, line + 1, sizeof(savedname));
break;
}
if ((file[0] != '\0') && (savedname[0] != '\0')) {
show(savedname, file, copycnt);
copycnt = 0;
file[0] = '\0';
savedname[0] = '\0';
}
}
fclose(cfp);
/* check for a file which hasn't been shown yet */
if (file[0] != '\0') {
if (savedname[0] == '\0') {
/* a safeguard in case the N-ame line is missing */
strlcpy(savedname, file, sizeof(savedname));
}
show(savedname, file, copycnt);
}
if (!lflag) {
blankfill(SIZCOL);
printf("%ld bytes\n", totsize);
totsize = 0;
}
}
int
inlist(char *uname, char *cfile)
{
int *r, jnum;
char **u;
const char *cfhost;
if (users == 0 && requests == 0)
return(1);
/*
* Check to see if it's in the user list
*/
for (u = user; u < &user[users]; u++)
if (!strcmp(*u, uname))
return(1);
/*
* Check the request list
*/
jnum = calc_jobnum(cfile, &cfhost);
for (r = requ; r < &requ[requests]; r++)
if (*r == jnum && !strcmp(cfhost, from_host))
return(1);
return(0);
}
void
show(const char *nfile, const char *datafile, int copies)
{
if (strcmp(nfile, " ") == 0)
nfile = "(standard input)";
if (lflag)
ldump(nfile, datafile, copies);
else
dump(nfile, datafile, copies);
}
/*
* Fill the line with blanks to the specified column
*/
void
blankfill(int tocol)
{
while (col++ < tocol)
putchar(' ');
}
/*
* Give the abbreviated dump of the file names
*/
void
dump(const char *nfile, const char *datafile, int copies)
{
struct stat lbuf;
const char etctmpl[] = ", ...";
char etc[sizeof(etctmpl)];
char *lastsep;
short fill, nlen;
short rem, remetc;
/*
* Print as many filenames as will fit
* (leaving room for the 'total size' field)
*/
fill = first ? 0 : 2; /* fill space for ``, '' */
nlen = strlen(nfile);
rem = SIZCOL - 1 - col;
if (nlen + fill > rem) {
if (first) {
/* print the right-most part of the name */
printf("...%s ", &nfile[3+nlen-rem]);
col = SIZCOL;
} else if (rem > 0) {
/* fit as much of the etc-string as we can */
remetc = rem;
if (rem > strlen(etctmpl))
remetc = strlen(etctmpl);
etc[0] = '\0';
strncat(etc, etctmpl, remetc);
printf("%s", etc);
col += remetc;
rem -= remetc;
/* room for the last segment of this filename? */
lastsep = strrchr(nfile, '/');
if ((lastsep != NULL) && (rem > strlen(lastsep))) {
/* print the right-most part of this name */
printf("%s", lastsep);
col += strlen(lastsep);
} else {
/* do not pack any more names in here */
blankfill(SIZCOL);
}
}
} else {
if (!first)
printf(", ");
printf("%s", nfile);
col += nlen + fill;
}
first = 0;
seteuid(euid);
if (*datafile && !stat(datafile, &lbuf))
totsize += copies * lbuf.st_size;
seteuid(uid);
}
/*
* Print the long info about the file
*/
void
ldump(const char *nfile, const char *datafile, int copies)
{
struct stat lbuf;
putchar('\t');
if (copies > 1)
printf("%-2d copies of %-19s", copies, nfile);
else
printf("%-32s", nfile);
if (*datafile && !stat(datafile, &lbuf))
printf(" %qd bytes", (long long) lbuf.st_size);
else
printf(" ??? bytes");
putchar('\n');
}
/*
* Print the job's rank in the queue,
* update col for screen management
*/
void
prank(int n)
{
char rline[100];
static const char *r[] = {
"th", "st", "nd", "rd", "th", "th", "th", "th", "th", "th"
};
if (n == 0) {
printf("active");
col += 6;
return;
}
if ((n/10)%10 == 1)
(void)snprintf(rline, sizeof(rline), "%dth", n);
else
(void)snprintf(rline, sizeof(rline), "%d%s", n, r[n%10]);
col += strlen(rline);
printf("%s", rline);
}
void
alarmhandler(int signo __unused)
{
/* the signal is ignored */
/* (the '__unused' is just to avoid a compile-time warning) */
}