/* * 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. * 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. */ #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1983, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint /* static char sccsid[] = "@(#)printjob.c 8.7 (Berkeley) 5/10/95"; */ static const char rcsid[] = "$FreeBSD: head/usr.sbin/lpr/lpd/printjob.c 60871 2000-05-24 11:38:50Z mpp $"; #endif /* not lint */ /* * printjob -- print jobs in the queue. * * NOTE: the lock file is used to pass information to lpq and lprm. * it does not need to be removed because file locks are dynamic. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "lp.h" #include "lp.local.h" #include "pathnames.h" #include "extern.h" #define DORETURN 0 /* absorb fork error */ #define DOABORT 1 /* abort if dofork fails */ /* * Error tokens */ #define REPRINT -2 #define ERROR -1 #define OK 0 #define FATALERR 1 #define NOACCT 2 #define FILTERERR 3 #define ACCESS 4 static dev_t fdev; /* device of file pointed to by symlink */ static ino_t fino; /* inode of file pointed to by symlink */ static FILE *cfp; /* control file */ static int child; /* id of any filters */ static int lfd; /* lock file descriptor */ static int ofd; /* output filter file descriptor */ static int ofilter; /* id of output filter, if any */ static int tfd = -1; /* output filter temp file output */ static int pfd; /* prstatic inter file descriptor */ static int pid; /* pid of lpd process */ static int prchild; /* id of pr process */ static char title[80]; /* ``pr'' title */ static char locale[80]; /* ``pr'' locale */ static char class[32]; /* classification field */ static char fromhost[32]; /* user's host machine */ /* indentation size in static characters */ static char indent[10] = "-i0"; static char jobname[100]; /* job or file name */ static char length[10] = "-l"; /* page length in lines */ static char logname[32]; /* user's login name */ static char pxlength[10] = "-y"; /* page length in pixels */ static char pxwidth[10] = "-x"; /* page width in pixels */ static char tempfile[] = "errsXXXXXX"; /* file name for filter errors */ static char width[10] = "-w"; /* page width in static characters */ #define TFILENAME "fltXXXXXX" static char tfile[] = TFILENAME; /* file name for filter output */ static void abortpr __P((int)); static void alarmhandler __P((int)); static void banner __P((struct printer *pp, char *name1, char *name2)); static int dofork __P((const struct printer *pp, int action)); static int dropit __P((int)); static void init __P((struct printer *pp)); static void openpr __P((const struct printer *pp)); static void opennet __P((const struct printer *pp)); static void opentty __P((const struct printer *pp)); static void openrem __P((const struct printer *pp)); static int print __P((struct printer *pp, int format, char *file)); static int printit __P((struct printer *pp, char *file)); static void pstatus __P((const struct printer *, const char *, ...)); static char response __P((const struct printer *pp)); static void scan_out __P((struct printer *pp, int scfd, char *scsp, int dlm)); static char *scnline __P((int, char *, int)); static int sendfile __P((struct printer *pp, int type, char *file, int format)); static int sendit __P((struct printer *pp, char *file)); static void sendmail __P((struct printer *pp, char *user, int bombed)); static void setty __P((const struct printer *pp)); void printjob(pp) struct printer *pp; { struct stat stb; register struct queue *q, **qp; struct queue **queue; register int i, nitems; off_t pidoff; int errcnt, count = 0; init(pp); /* set up capabilities */ (void) write(1, "", 1); /* ack that daemon is started */ (void) close(2); /* set up log file */ if (open(pp->log_file, O_WRONLY|O_APPEND, LOG_FILE_MODE) < 0) { syslog(LOG_ERR, "%s: %m", pp->log_file); (void) open(_PATH_DEVNULL, O_WRONLY); } setgid(getegid()); pid = getpid(); /* for use with lprm */ setpgrp(0, pid); signal(SIGHUP, abortpr); signal(SIGINT, abortpr); signal(SIGQUIT, abortpr); signal(SIGTERM, abortpr); (void) mktemp(tempfile); /* * uses short form file names */ if (chdir(pp->spool_dir) < 0) { syslog(LOG_ERR, "%s: %m", pp->spool_dir); exit(1); } if (stat(pp->lock_file, &stb) == 0 && (stb.st_mode & LFM_PRINT_DIS)) exit(0); /* printing disabled */ lfd = open(pp->lock_file, O_WRONLY|O_CREAT|O_EXLOCK|O_NONBLOCK, LOCK_FILE_MODE); if (lfd < 0) { if (errno == EWOULDBLOCK) /* active daemon present */ exit(0); syslog(LOG_ERR, "%s: %s: %m", pp->printer, pp->lock_file); exit(1); } /* turn off non-blocking mode (was turned on for lock effects only) */ if (fcntl(lfd, F_SETFL, 0) < 0) { syslog(LOG_ERR, "%s: %s: %m", pp->printer, pp->lock_file); exit(1); } ftruncate(lfd, 0); /* * write process id for others to know */ sprintf(line, "%u\n", pid); pidoff = i = strlen(line); if (write(lfd, line, i) != i) { syslog(LOG_ERR, "%s: %s: %m", pp->printer, pp->lock_file); exit(1); } /* * search the spool directory for work and sort by queue order. */ if ((nitems = getq(pp, &queue)) < 0) { syslog(LOG_ERR, "%s: can't scan %s", pp->printer, pp->spool_dir); exit(1); } if (nitems == 0) /* no work to do */ exit(0); if (stb.st_mode & LFM_RESET_QUE) { /* reset queue flag */ if (fchmod(lfd, stb.st_mode & ~LFM_RESET_QUE) < 0) syslog(LOG_ERR, "%s: %s: %m", pp->printer, pp->lock_file); } openpr(pp); /* open printer or remote */ again: /* * we found something to do now do it -- * write the name of the current control file into the lock file * so the spool queue program can tell what we're working on */ for (qp = queue; nitems--; free((char *) q)) { q = *qp++; if (stat(q->q_name, &stb) < 0) continue; errcnt = 0; restart: (void) lseek(lfd, pidoff, 0); (void) snprintf(line, sizeof(line), "%s\n", q->q_name); i = strlen(line); if (write(lfd, line, i) != i) syslog(LOG_ERR, "%s: %s: %m", pp->printer, pp->lock_file); if (!pp->remote) i = printit(pp, q->q_name); else i = sendit(pp, q->q_name); /* * Check to see if we are supposed to stop printing or * if we are to rebuild the queue. */ if (fstat(lfd, &stb) == 0) { /* stop printing before starting next job? */ if (stb.st_mode & LFM_PRINT_DIS) goto done; /* rebuild queue (after lpc topq) */ if (stb.st_mode & LFM_RESET_QUE) { for (free(q); nitems--; free(q)) q = *qp++; if (fchmod(lfd, stb.st_mode & ~LFM_RESET_QUE) < 0) syslog(LOG_WARNING, "%s: %s: %m", pp->printer, pp->lock_file); break; } } if (i == OK) /* file ok and printed */ count++; else if (i == REPRINT && ++errcnt < 5) { /* try reprinting the job */ syslog(LOG_INFO, "restarting %s", pp->printer); if (ofilter > 0) { kill(ofilter, SIGCONT); /* to be sure */ (void) close(ofd); while ((i = wait(NULL)) > 0 && i != ofilter) ; ofilter = 0; } (void) close(pfd); /* close printer */ if (ftruncate(lfd, pidoff) < 0) syslog(LOG_WARNING, "%s: %s: %m", pp->printer, pp->lock_file); openpr(pp); /* try to reopen printer */ goto restart; } else { syslog(LOG_WARNING, "%s: job could not be %s (%s)", pp->printer, pp->remote ? "sent to remote host" : "printed", q->q_name); if (i == REPRINT) { /* ensure we don't attempt this job again */ (void) unlink(q->q_name); q->q_name[0] = 'd'; (void) unlink(q->q_name); if (logname[0]) sendmail(pp, logname, FATALERR); } } } free(queue); /* * search the spool directory for more work. */ if ((nitems = getq(pp, &queue)) < 0) { syslog(LOG_ERR, "%s: can't scan %s", pp->printer, pp->spool_dir); exit(1); } if (nitems == 0) { /* no more work to do */ done: if (count > 0) { /* Files actually printed */ if (!pp->no_formfeed && !pp->tof) (void) write(ofd, pp->form_feed, strlen(pp->form_feed)); if (pp->trailer != NULL) /* output trailer */ (void) write(ofd, pp->trailer, strlen(pp->trailer)); } (void) close(ofd); (void) wait(NULL); (void) unlink(tempfile); exit(0); } goto again; } char fonts[4][50]; /* fonts for troff */ char ifonts[4][40] = { _PATH_VFONTR, _PATH_VFONTI, _PATH_VFONTB, _PATH_VFONTS, }; /* * The remaining part is the reading of the control file (cf) * and performing the various actions. */ static int printit(pp, file) struct printer *pp; char *file; { register int i; char *cp; int bombed = OK; /* * open control file; ignore if no longer there. */ if ((cfp = fopen(file, "r")) == NULL) { syslog(LOG_INFO, "%s: %s: %m", pp->printer, file); return(OK); } /* * Reset troff fonts. */ for (i = 0; i < 4; i++) strcpy(fonts[i], ifonts[i]); sprintf(&width[2], "%ld", pp->page_width); strcpy(indent+2, "0"); /* * read the control file for work to do * * file format -- first character in the line is a command * rest of the line is the argument. * valid commands are: * * S -- "stat info" for symbolic link protection * J -- "job name" on banner page * C -- "class name" on banner page * L -- "literal" user's name to print on banner * T -- "title" for pr * H -- "host name" of machine where lpr was done * P -- "person" user's login name * I -- "indent" amount to indent output * R -- laser dpi "resolution" * f -- "file name" name of text file to print * l -- "file name" text file with control chars * p -- "file name" text file to print with pr(1) * t -- "file name" troff(1) file to print * n -- "file name" ditroff(1) file to print * d -- "file name" dvi file to print * g -- "file name" plot(1G) file to print * v -- "file name" plain raster file to print * c -- "file name" cifplot file to print * 1 -- "R font file" for troff * 2 -- "I font file" for troff * 3 -- "B font file" for troff * 4 -- "S font file" for troff * N -- "name" of file (used by lpq) * U -- "unlink" name of file to remove * (after we print it. (Pass 2 only)). * M -- "mail" to user when done printing * Z -- "locale" for pr * * getline reads a line and expands tabs to blanks */ /* pass 1 */ while (getline(cfp)) switch (line[0]) { case 'H': strncpy(fromhost, line+1, sizeof(fromhost) - 1); fromhost[sizeof(fromhost) - 1] = '\0'; if (class[0] == '\0') { strncpy(class, line+1, sizeof(class) - 1); class[sizeof(class) - 1] = '\0'; } continue; case 'P': strncpy(logname, line+1, sizeof(logname) - 1); logname[sizeof(logname) - 1] = '\0'; if (pp->restricted) { /* restricted */ if (getpwnam(logname) == NULL) { bombed = NOACCT; sendmail(pp, line+1, bombed); goto pass2; } } continue; case 'S': cp = line+1; i = 0; while (*cp >= '0' && *cp <= '9') i = i * 10 + (*cp++ - '0'); fdev = i; cp++; i = 0; while (*cp >= '0' && *cp <= '9') i = i * 10 + (*cp++ - '0'); fino = i; continue; case 'J': if (line[1] != '\0') { strncpy(jobname, line+1, sizeof(jobname) - 1); jobname[sizeof(jobname) - 1] = '\0'; } else strcpy(jobname, " "); continue; case 'C': if (line[1] != '\0') strncpy(class, line+1, sizeof(class) - 1); else if (class[0] == '\0') gethostname(class, sizeof(class)); class[sizeof(class) - 1] = '\0'; continue; case 'T': /* header title for pr */ strncpy(title, line+1, sizeof(title) - 1); title[sizeof(title) - 1] = '\0'; continue; case 'L': /* identification line */ if (!pp->no_header && !pp->header_last) banner(pp, line+1, jobname); continue; case '1': /* troff fonts */ case '2': case '3': case '4': if (line[1] != '\0') { strncpy(fonts[line[0]-'1'], line+1, 50-1); fonts[line[0]-'1'][50-1] = '\0'; } continue; case 'W': /* page width */ strncpy(width+2, line+1, sizeof(width) - 3); width[2+sizeof(width) - 3] = '\0'; continue; case 'I': /* indent amount */ strncpy(indent+2, line+1, sizeof(indent) - 3); indent[2+sizeof(indent) - 3] = '\0'; continue; case 'Z': /* locale for pr */ strncpy(locale, line+1, sizeof(locale) - 1); locale[sizeof(locale) - 1] = '\0'; continue; default: /* some file to print */ switch (i = print(pp, line[0], line+1)) { case ERROR: if (bombed == OK) bombed = FATALERR; break; case REPRINT: (void) fclose(cfp); return(REPRINT); case FILTERERR: case ACCESS: bombed = i; sendmail(pp, logname, bombed); } title[0] = '\0'; continue; case 'N': case 'U': case 'M': case 'R': continue; } /* pass 2 */ pass2: fseek(cfp, 0L, 0); while (getline(cfp)) switch (line[0]) { case 'L': /* identification line */ if (!pp->no_header && pp->header_last) banner(pp, line+1, jobname); continue; case 'M': if (bombed < NOACCT) /* already sent if >= NOACCT */ sendmail(pp, line+1, bombed); continue; case 'U': if (strchr(line+1, '/')) continue; (void) unlink(line+1); } /* * clean-up in case another control file exists */ (void) fclose(cfp); (void) unlink(file); return(bombed == OK ? OK : ERROR); } /* * Print a file. * Set up the chain [ PR [ | {IF, OF} ] ] or {IF, RF, TF, NF, DF, CF, VF}. * Return -1 if a non-recoverable error occured, * 2 if the filter detected some errors (but printed the job anyway), * 1 if we should try to reprint this job and * 0 if all is well. * Note: all filters take stdin as the file, stdout as the printer, * stderr as the log file, and must not ignore SIGINT. */ static int print(pp, format, file) struct printer *pp; int format; char *file; { register int n, i; register char *prog; int fi, fo; FILE *fp; char *av[15], buf[BUFSIZ]; int pid, p[2], stopped = 0; union wait status; struct stat stb; if (lstat(file, &stb) < 0 || (fi = open(file, O_RDONLY)) < 0) return(ERROR); /* * Check to see if data file is a symbolic link. If so, it should * still point to the same file or someone is trying to print * something he shouldn't. */ if ((stb.st_mode & S_IFMT) == S_IFLNK && fstat(fi, &stb) == 0 && (stb.st_dev != fdev || stb.st_ino != fino)) return(ACCESS); if (!pp->no_formfeed && !pp->tof) { /* start on a fresh page */ (void) write(ofd, pp->form_feed, strlen(pp->form_feed)); pp->tof = 1; } if (pp->filters[LPF_INPUT] == NULL && (format == 'f' || format == 'l')) { pp->tof = 0; while ((n = read(fi, buf, BUFSIZ)) > 0) if (write(ofd, buf, n) != n) { (void) close(fi); return(REPRINT); } (void) close(fi); return(OK); } switch (format) { case 'p': /* print file using 'pr' */ if (pp->filters[LPF_INPUT] == NULL) { /* use output filter */ prog = _PATH_PR; i = 0; av[i++] = "pr"; av[i++] = width; av[i++] = length; av[i++] = "-h"; av[i++] = *title ? title : " "; av[i++] = "-L"; av[i++] = *locale ? locale : "C"; av[i++] = "-F"; av[i] = 0; fo = ofd; goto start; } pipe(p); if ((prchild = dofork(pp, DORETURN)) == 0) { /* child */ dup2(fi, 0); /* file is stdin */ dup2(p[1], 1); /* pipe is stdout */ closelog(); closeallfds(3); execl(_PATH_PR, "pr", width, length, "-h", *title ? title : " ", "-L", *locale ? locale : "C", "-F", 0); syslog(LOG_ERR, "cannot execl %s", _PATH_PR); exit(2); } (void) close(p[1]); /* close output side */ (void) close(fi); if (prchild < 0) { prchild = 0; (void) close(p[0]); return(ERROR); } fi = p[0]; /* use pipe for input */ case 'f': /* print plain text file */ prog = pp->filters[LPF_INPUT]; av[1] = width; av[2] = length; av[3] = indent; n = 4; break; case 'l': /* like 'f' but pass control characters */ prog = pp->filters[LPF_INPUT]; av[1] = "-c"; av[2] = width; av[3] = length; av[4] = indent; n = 5; break; case 'r': /* print a fortran text file */ prog = pp->filters[LPF_FORTRAN]; av[1] = width; av[2] = length; n = 3; break; case 't': /* print troff output */ case 'n': /* print ditroff output */ case 'd': /* print tex output */ (void) unlink(".railmag"); if ((fo = creat(".railmag", FILMOD)) < 0) { syslog(LOG_ERR, "%s: cannot create .railmag", pp->printer); (void) unlink(".railmag"); } else { for (n = 0; n < 4; n++) { if (fonts[n][0] != '/') (void) write(fo, _PATH_VFONT, sizeof(_PATH_VFONT) - 1); (void) write(fo, fonts[n], strlen(fonts[n])); (void) write(fo, "\n", 1); } (void) close(fo); } prog = (format == 't') ? pp->filters[LPF_TROFF] : ((format == 'n') ? pp->filters[LPF_DITROFF] : pp->filters[LPF_DVI]); av[1] = pxwidth; av[2] = pxlength; n = 3; break; case 'c': /* print cifplot output */ prog = pp->filters[LPF_CIFPLOT]; av[1] = pxwidth; av[2] = pxlength; n = 3; break; case 'g': /* print plot(1G) output */ prog = pp->filters[LPF_GRAPH]; av[1] = pxwidth; av[2] = pxlength; n = 3; break; case 'v': /* print raster output */ prog = pp->filters[LPF_RASTER]; av[1] = pxwidth; av[2] = pxlength; n = 3; break; default: (void) close(fi); syslog(LOG_ERR, "%s: illegal format character '%c'", pp->printer, format); return(ERROR); } if (prog == NULL) { (void) close(fi); syslog(LOG_ERR, "%s: no filter found in printcap for format character '%c'", pp->printer, format); return(ERROR); } if ((av[0] = strrchr(prog, '/')) != NULL) av[0]++; else av[0] = prog; av[n++] = "-n"; av[n++] = logname; av[n++] = "-h"; av[n++] = fromhost; av[n++] = pp->acct_file; av[n] = 0; fo = pfd; if (ofilter > 0) { /* stop output filter */ write(ofd, "\031\1", 2); while ((pid = wait3((int *)&status, WUNTRACED, 0)) > 0 && pid != ofilter) ; if (status.w_stopval != WSTOPPED) { (void) close(fi); syslog(LOG_WARNING, "%s: output filter died " "(retcode=%d termsig=%d)", pp->printer, status.w_retcode, status.w_termsig); return(REPRINT); } stopped++; } start: if ((child = dofork(pp, DORETURN)) == 0) { /* child */ dup2(fi, 0); dup2(fo, 1); n = open(tempfile, O_WRONLY|O_CREAT|O_TRUNC, 0664); if (n >= 0) dup2(n, 2); closelog(); closeallfds(3); execv(prog, av); syslog(LOG_ERR, "cannot execv %s", prog); exit(2); } (void) close(fi); if (child < 0) status.w_retcode = 100; else while ((pid = wait((int *)&status)) > 0 && pid != child) ; child = 0; prchild = 0; if (stopped) { /* restart output filter */ if (kill(ofilter, SIGCONT) < 0) { syslog(LOG_ERR, "cannot restart output filter"); exit(1); } } pp->tof = 0; /* Copy filter output to "lf" logfile */ if ((fp = fopen(tempfile, "r"))) { while (fgets(buf, sizeof(buf), fp)) fputs(buf, stderr); fclose(fp); } if (!WIFEXITED(status)) { syslog(LOG_WARNING, "%s: filter '%c' terminated (termsig=%d)", pp->printer, format, status.w_termsig); return(ERROR); } switch (status.w_retcode) { case 0: pp->tof = 1; return(OK); case 1: return(REPRINT); case 2: return(ERROR); default: syslog(LOG_WARNING, "%s: filter '%c' exited (retcode=%d)", pp->printer, format, status.w_retcode); return(FILTERERR); } } /* * Send the daemon control file (cf) and any data files. * Return -1 if a non-recoverable error occured, 1 if a recoverable error and * 0 if all is well. */ static int sendit(pp, file) struct printer *pp; char *file; { register int i, err = OK; char *cp, last[BUFSIZ]; /* * open control file */ if ((cfp = fopen(file, "r")) == NULL) return(OK); /* * read the control file for work to do * * file format -- first character in the line is a command * rest of the line is the argument. * commands of interest are: * * a-z -- "file name" name of file to print * U -- "unlink" name of file to remove * (after we print it. (Pass 2 only)). */ /* * pass 1 */ while (getline(cfp)) { again: if (line[0] == 'S') { cp = line+1; i = 0; while (*cp >= '0' && *cp <= '9') i = i * 10 + (*cp++ - '0'); fdev = i; cp++; i = 0; while (*cp >= '0' && *cp <= '9') i = i * 10 + (*cp++ - '0'); fino = i; } else if (line[0] == 'H') { strcpy(fromhost, line+1); if (class[0] == '\0') strncpy(class, line+1, sizeof(class) - 1); } else if (line[0] == 'P') { strncpy(logname, line+1, sizeof(logname) - 1); if (pp->restricted) { /* restricted */ if (getpwnam(logname) == NULL) { sendmail(pp, line+1, NOACCT); err = ERROR; break; } } } else if (line[0] == 'I') { strncpy(indent+2, line+1, sizeof(indent) - 3); } else if (line[0] >= 'a' && line[0] <= 'z') { strcpy(last, line); while ((i = getline(cfp)) != 0) if (strcmp(last, line)) break; switch (sendfile(pp, '\3', last+1, *last)) { case OK: if (i) goto again; break; case REPRINT: (void) fclose(cfp); return(REPRINT); case ACCESS: sendmail(pp, logname, ACCESS); case ERROR: err = ERROR; } break; } } if (err == OK && sendfile(pp, '\2', file, '\0') > 0) { (void) fclose(cfp); return(REPRINT); } /* * pass 2 */ fseek(cfp, 0L, 0); while (getline(cfp)) if (line[0] == 'U' && !strchr(line+1, '/')) (void) unlink(line+1); /* * clean-up in case another control file exists */ (void) fclose(cfp); (void) unlink(file); return(err); } /* * Send a data file to the remote machine and spool it. * Return positive if we should try resending. */ static int sendfile(pp, type, file, format) struct printer *pp; int type; char *file; char format; { register int f, i, amt; struct stat stb; char buf[BUFSIZ]; int sizerr, resp, closedpr; if (lstat(file, &stb) < 0 || (f = open(file, O_RDONLY)) < 0) return(ERROR); /* * Check to see if data file is a symbolic link. If so, it should * still point to the same file or someone is trying to print something * he shouldn't. */ if ((stb.st_mode & S_IFMT) == S_IFLNK && fstat(f, &stb) == 0 && (stb.st_dev != fdev || stb.st_ino != fino)) return(ACCESS); sizerr = 0; closedpr = 0; if (type == '\3') { if (pp->filters[LPF_INPUT]) { /* * We're sending something with an ifilter, we have to * run the ifilter and store the output as a * temporary file (tfile)... the protocol requires us * to send the file size */ char *av[15]; int n; int ifilter; union wait status; /* XXX */ strcpy(tfile,TFILENAME); if ((tfd = mkstemp(tfile)) == -1) { syslog(LOG_ERR, "mkstemp: %m"); return(ERROR); } if ((av[0] = strrchr(pp->filters[LPF_INPUT], '/')) == NULL) av[0] = pp->filters[LPF_INPUT]; else av[0]++; if (format == 'l') av[n=1] = "-c"; else n = 0; av[++n] = width; av[++n] = length; av[++n] = indent; av[++n] = "-n"; av[++n] = logname; av[++n] = "-h"; av[++n] = fromhost; av[++n] = pp->acct_file; av[++n] = 0; if ((ifilter = dofork(pp, DORETURN)) == 0) { /* child */ dup2(f, 0); dup2(tfd, 1); n = open(tempfile, O_WRONLY|O_CREAT|O_TRUNC, TEMP_FILE_MODE); if (n >= 0) dup2(n, 2); closelog(); closeallfds(3); execv(pp->filters[LPF_INPUT], av); syslog(LOG_ERR, "cannot execv %s", pp->filters[LPF_INPUT]); exit(2); } (void) close(f); if (ifilter < 0) status.w_retcode = 100; else while ((pid = wait((int *)&status)) > 0 && pid != ifilter) ; switch (status.w_retcode) { case 0: break; case 1: unlink(tfile); return(REPRINT); case 2: unlink(tfile); return(ERROR); default: syslog(LOG_WARNING, "%s: filter '%c' exited" " (retcode=%d)", pp->printer, format, status.w_retcode); unlink(tfile); return(FILTERERR); } if (fstat(tfd, &stb) < 0) /* the size of tfile */ return(ERROR); f = tfd; lseek(f,0,SEEK_SET); } else if (ofilter) { /* * We're sending something with an ofilter, we have to * store the output as a temporary file (tfile)... the * protocol requires us to send the file size */ int i; for (i = 0; i < stb.st_size; i += BUFSIZ) { amt = BUFSIZ; if (i + amt > stb.st_size) amt = stb.st_size - i; if (sizerr == 0 && read(f, buf, amt) != amt) { sizerr = 1; break; } if (write(ofd, buf, amt) != amt) { (void) close(f); return(REPRINT); } } close(ofd); close(f); while ((i = wait(NULL)) > 0 && i != ofilter) ; ofilter = 0; if (fstat(tfd, &stb) < 0) { /* the size of tfile */ openpr(pp); return(ERROR); } f = tfd; lseek(f,0,SEEK_SET); closedpr = 1; } } (void) sprintf(buf, "%c%qd %s\n", type, stb.st_size, file); amt = strlen(buf); for (i = 0; ; i++) { if (write(pfd, buf, amt) != amt || (resp = response(pp)) < 0 || resp == '\1') { (void) close(f); if (tfd != -1 && type == '\3') { tfd = -1; unlink(tfile); if (closedpr) openpr(pp); } return(REPRINT); } else if (resp == '\0') break; if (i == 0) pstatus(pp, "no space on remote; waiting for queue to drain"); if (i == 10) syslog(LOG_ALERT, "%s: can't send to %s; queue full", pp->printer, pp->remote_host); sleep(5 * 60); } if (i) pstatus(pp, "sending to %s", pp->remote_host); for (i = 0; i < stb.st_size; i += BUFSIZ) { amt = BUFSIZ; if (i + amt > stb.st_size) amt = stb.st_size - i; if (sizerr == 0 && read(f, buf, amt) != amt) sizerr = 1; if (write(pfd, buf, amt) != amt) { (void) close(f); if (tfd != -1 && type == '\3') { tfd = -1; unlink(tfile); if (closedpr) openpr(pp); } return(REPRINT); } } (void) close(f); if (tfd != -1 && type == '\3') { tfd = -1; unlink(tfile); } if (sizerr) { syslog(LOG_INFO, "%s: %s: changed size", pp->printer, file); /* tell recvjob to ignore this file */ (void) write(pfd, "\1", 1); if (closedpr) openpr(pp); return(ERROR); } if (write(pfd, "", 1) != 1 || response(pp)) { if (closedpr) openpr(pp); return(REPRINT); } if (closedpr) openpr(pp); return(OK); } /* * Check to make sure there have been no errors and that both programs * are in sync with eachother. * Return non-zero if the connection was lost. */ static char response(pp) const struct printer *pp; { char resp; if (read(pfd, &resp, 1) != 1) { syslog(LOG_INFO, "%s: lost connection", pp->printer); return(-1); } return(resp); } /* * Banner printing stuff */ static void banner(pp, name1, name2) struct printer *pp; char *name1, *name2; { time_t tvec; time(&tvec); if (!pp->no_formfeed && !pp->tof) (void) write(ofd, pp->form_feed, strlen(pp->form_feed)); if (pp->short_banner) { /* short banner only */ if (class[0]) { (void) write(ofd, class, strlen(class)); (void) write(ofd, ":", 1); } (void) write(ofd, name1, strlen(name1)); (void) write(ofd, " Job: ", 7); (void) write(ofd, name2, strlen(name2)); (void) write(ofd, " Date: ", 8); (void) write(ofd, ctime(&tvec), 24); (void) write(ofd, "\n", 1); } else { /* normal banner */ (void) write(ofd, "\n\n\n", 3); scan_out(pp, ofd, name1, '\0'); (void) write(ofd, "\n\n", 2); scan_out(pp, ofd, name2, '\0'); if (class[0]) { (void) write(ofd,"\n\n\n",3); scan_out(pp, ofd, class, '\0'); } (void) write(ofd, "\n\n\n\n\t\t\t\t\tJob: ", 15); (void) write(ofd, name2, strlen(name2)); (void) write(ofd, "\n\t\t\t\t\tDate: ", 12); (void) write(ofd, ctime(&tvec), 24); (void) write(ofd, "\n", 1); } if (!pp->no_formfeed) (void) write(ofd, pp->form_feed, strlen(pp->form_feed)); pp->tof = 1; } static char * scnline(key, p, c) register int key; register char *p; int c; { register int scnwidth; for (scnwidth = WIDTH; --scnwidth;) { key <<= 1; *p++ = key & 0200 ? c : BACKGND; } return (p); } #define TRC(q) (((q)-' ')&0177) static void scan_out(pp, scfd, scsp, dlm) struct printer *pp; int scfd, dlm; char *scsp; { register char *strp; register int nchrs, j; char outbuf[LINELEN+1], *sp, c, cc; int d, scnhgt; for (scnhgt = 0; scnhgt++ < HEIGHT+DROP; ) { strp = &outbuf[0]; sp = scsp; for (nchrs = 0; ; ) { d = dropit(c = TRC(cc = *sp++)); if ((!d && scnhgt > HEIGHT) || (scnhgt <= DROP && d)) for (j = WIDTH; --j;) *strp++ = BACKGND; else strp = scnline(scnkey[(int)c][scnhgt-1-d], strp, cc); if (*sp == dlm || *sp == '\0' || nchrs++ >= pp->page_width/(WIDTH+1)-1) break; *strp++ = BACKGND; *strp++ = BACKGND; } while (*--strp == BACKGND && strp >= outbuf) ; strp++; *strp++ = '\n'; (void) write(scfd, outbuf, strp-outbuf); } } static int dropit(c) int c; { switch(c) { case TRC('_'): case TRC(';'): case TRC(','): case TRC('g'): case TRC('j'): case TRC('p'): case TRC('q'): case TRC('y'): return (DROP); default: return (0); } } /* * sendmail --- * tell people about job completion */ static void sendmail(pp, user, bombed) struct printer *pp; char *user; int bombed; { register int i; int p[2], s; register char *cp; struct stat stb; FILE *fp; pipe(p); if ((s = dofork(pp, DORETURN)) == 0) { /* child */ dup2(p[0], 0); closelog(); closeallfds(3); if ((cp = strrchr(_PATH_SENDMAIL, '/')) != NULL) cp++; else cp = _PATH_SENDMAIL; execl(_PATH_SENDMAIL, cp, "-t", 0); _exit(0); } else if (s > 0) { /* parent */ dup2(p[1], 1); printf("To: %s@%s\n", user, fromhost); printf("Subject: %s printer job \"%s\"\n", pp->printer, *jobname ? jobname : ""); printf("Reply-To: root@%s\n\n", host); printf("Your printer job "); if (*jobname) printf("(%s) ", jobname); cp = "XXX compiler confusion"; /* XXX shut GCC up */ switch (bombed) { case OK: printf("\ncompleted successfully\n"); cp = "OK"; break; default: case FATALERR: printf("\ncould not be printed\n"); cp = "FATALERR"; break; case NOACCT: printf("\ncould not be printed without an account on %s\n", host); cp = "NOACCT"; break; case FILTERERR: if (stat(tempfile, &stb) < 0 || stb.st_size == 0 || (fp = fopen(tempfile, "r")) == NULL) { printf("\nhad some errors and may not have printed\n"); break; } printf("\nhad the following errors and may not have printed:\n"); while ((i = getc(fp)) != EOF) putchar(i); (void) fclose(fp); cp = "FILTERERR"; break; case ACCESS: printf("\nwas not printed because it was not linked to the original file\n"); cp = "ACCESS"; } fflush(stdout); (void) close(1); } else { syslog(LOG_WARNING, "unable to send mail to %s: %m", user); return; } (void) close(p[0]); (void) close(p[1]); wait(NULL); syslog(LOG_INFO, "mail sent to user %s about job %s on printer %s (%s)", user, *jobname ? jobname : "", pp->printer, cp); } /* * dofork - fork with retries on failure */ static int dofork(pp, action) const struct printer *pp; int action; { register int i, pid; struct passwd *pwd; for (i = 0; i < 20; i++) { if ((pid = fork()) < 0) { sleep((unsigned)(i*i)); continue; } /* * Child should run as daemon instead of root */ if (pid == 0) { if ((pwd = getpwuid(pp->daemon_user)) == NULL) { syslog(LOG_ERR, "Can't lookup default daemon uid (%d) in password file", pp->daemon_user); break; } initgroups(pwd->pw_name, pwd->pw_gid); setgid(pwd->pw_gid); setuid(pp->daemon_user); } return(pid); } syslog(LOG_ERR, "can't fork"); switch (action) { case DORETURN: return (-1); default: syslog(LOG_ERR, "bad action (%d) to dofork", action); /*FALL THRU*/ case DOABORT: exit(1); } /*NOTREACHED*/ } /* * Kill child processes to abort current job. */ static void abortpr(signo) int signo; { (void) unlink(tempfile); kill(0, SIGINT); if (ofilter > 0) kill(ofilter, SIGCONT); while (wait(NULL) > 0) ; if (ofilter > 0 && tfd != -1) unlink(tfile); exit(0); } static void init(pp) struct printer *pp; { char *s; sprintf(&width[2], "%ld", pp->page_width); sprintf(&length[2], "%ld", pp->page_length); sprintf(&pxwidth[2], "%ld", pp->page_pwidth); sprintf(&pxlength[2], "%ld", pp->page_plength); if ((s = checkremote(pp)) != 0) { syslog(LOG_WARNING, "%s", s); free(s); } } void startprinting(printer) const char *printer; { struct printer myprinter, *pp = &myprinter; int status; init_printer(pp); status = getprintcap(printer, pp); switch(status) { case PCAPERR_OSERR: syslog(LOG_ERR, "can't open printer description file: %m"); exit(1); case PCAPERR_NOTFOUND: syslog(LOG_ERR, "unknown printer: %s", printer); exit(1); case PCAPERR_TCLOOP: fatal(pp, "potential reference loop detected in printcap file"); default: break; } printjob(pp); } /* * Acquire line printer or remote connection. */ static void openpr(pp) const struct printer *pp; { int p[2]; char *cp; if (pp->remote) { openrem(pp); } else if (*pp->lp) { if ((cp = strchr(pp->lp, '@')) != NULL) opennet(pp); else opentty(pp); } else { syslog(LOG_ERR, "%s: no line printer device or host name", pp->printer); exit(1); } /* * Start up an output filter, if needed. */ if (pp->filters[LPF_OUTPUT] && !pp->filters[LPF_INPUT] && !ofilter) { pipe(p); if (pp->remote) { strcpy(tfile, TFILENAME); tfd = mkstemp(tfile); } if ((ofilter = dofork(pp, DOABORT)) == 0) { /* child */ dup2(p[0], 0); /* pipe is std in */ /* tfile/printer is stdout */ dup2(pp->remote ? tfd : pfd, 1); closelog(); closeallfds(3); if ((cp = strrchr(pp->filters[LPF_OUTPUT], '/')) == NULL) cp = pp->filters[LPF_OUTPUT]; else cp++; execl(pp->filters[LPF_OUTPUT], cp, width, length, 0); syslog(LOG_ERR, "%s: %s: %m", pp->printer, pp->filters[LPF_OUTPUT]); exit(1); } (void) close(p[0]); /* close input side */ ofd = p[1]; /* use pipe for output */ } else { ofd = pfd; ofilter = 0; } } /* * Printer connected directly to the network * or to a terminal server on the net */ static void opennet(pp) const struct printer *pp; { register int i; int resp; u_long port; char *ep; void (*savealrm)(int); port = strtoul(pp->lp, &ep, 0); if (*ep != '@' || port > 65535) { syslog(LOG_ERR, "%s: bad port number: %s", pp->printer, pp->lp); exit(1); } ep++; for (i = 1; ; i = i < 256 ? i << 1 : i) { resp = -1; savealrm = signal(SIGALRM, alarmhandler); alarm(pp->conn_timeout); pfd = getport(pp, ep, port); alarm(0); (void)signal(SIGALRM, savealrm); if (pfd < 0 && errno == ECONNREFUSED) resp = 1; else if (pfd >= 0) { /* * need to delay a bit for rs232 lines * to stabilize in case printer is * connected via a terminal server */ delay(500); break; } if (i == 1) { if (resp < 0) pstatus(pp, "waiting for %s to come up", pp->lp); else pstatus(pp, "waiting for access to printer on %s", pp->lp); } sleep(i); } pstatus(pp, "sending to %s port %d", ep, port); } /* * Printer is connected to an RS232 port on this host */ static void opentty(pp) const struct printer *pp; { register int i; for (i = 1; ; i = i < 32 ? i << 1 : i) { pfd = open(pp->lp, pp->rw ? O_RDWR : O_WRONLY); if (pfd >= 0) { delay(500); break; } if (errno == ENOENT) { syslog(LOG_ERR, "%s: %m", pp->lp); exit(1); } if (i == 1) pstatus(pp, "waiting for %s to become ready (offline?)", pp->printer); sleep(i); } if (isatty(pfd)) setty(pp); pstatus(pp, "%s is ready and printing", pp->printer); } /* * Printer is on a remote host */ static void openrem(pp) const struct printer *pp; { register int i; int resp; void (*savealrm)(int); for (i = 1; ; i = i < 256 ? i << 1 : i) { resp = -1; savealrm = signal(SIGALRM, alarmhandler); alarm(pp->conn_timeout); pfd = getport(pp, pp->remote_host, 0); alarm(0); (void)signal(SIGALRM, savealrm); if (pfd >= 0) { if ((writel(pfd, "\2", pp->remote_queue, "\n", (char *)0) == 2 + strlen(pp->remote_queue)) && (resp = response(pp)) == 0) break; (void) close(pfd); } if (i == 1) { if (resp < 0) pstatus(pp, "waiting for %s to come up", pp->remote_host); else { pstatus(pp, "waiting for queue to be enabled on %s", pp->remote_host); i = 256; } } sleep(i); } pstatus(pp, "sending to %s", pp->remote_host); } /* * setup tty lines. */ static void setty(pp) const struct printer *pp; { struct termios ttybuf; if (ioctl(pfd, TIOCEXCL, (char *)0) < 0) { syslog(LOG_ERR, "%s: ioctl(TIOCEXCL): %m", pp->printer); exit(1); } if (tcgetattr(pfd, &ttybuf) < 0) { syslog(LOG_ERR, "%s: tcgetattr: %m", pp->printer); exit(1); } if (pp->baud_rate > 0) cfsetspeed(&ttybuf, pp->baud_rate); if (pp->mode_set) { char *s = strdup(pp->mode_set), *tmp; while ((tmp = strsep(&s, ",")) != NULL) { (void) msearch(tmp, &ttybuf); } } if (pp->mode_set != 0 || pp->baud_rate > 0) { if (tcsetattr(pfd, TCSAFLUSH, &ttybuf) == -1) { syslog(LOG_ERR, "%s: tcsetattr: %m", pp->printer); } } } #ifdef __STDC__ #include #else #include #endif static void #ifdef __STDC__ pstatus(const struct printer *pp, const char *msg, ...) #else pstatus(pp, msg, va_alist) const struct printer *pp; char *msg; va_dcl #endif { int fd; char *buf; va_list ap; #ifdef __STDC__ va_start(ap, msg); #else va_start(ap); #endif umask(0); fd = open(pp->status_file, O_WRONLY|O_CREAT|O_EXLOCK, STAT_FILE_MODE); if (fd < 0) { syslog(LOG_ERR, "%s: %s: %m", pp->printer, pp->status_file); exit(1); } ftruncate(fd, 0); vasprintf(&buf, msg, ap); va_end(ap); writel(fd, buf, "\n", (char *)0); close(fd); free(buf); } void alarmhandler(signo) { /* ignored */ }