/* $NetBSD: printjob.c,v 1.26 2001/01/05 03:27:27 lukem Exp $ */ /* * 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. */ #include #ifndef lint __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\ The Regents of the University of California. All rights reserved.\n"); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)printjob.c 8.7 (Berkeley) 5/10/95"; #else __RCSID("$NetBSD: printjob.c,v 1.26 2001/01/05 03:27:27 lukem Exp $"); #endif #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 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 int tof; /* true if at top of form */ 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 output */ static char width[10] = "-w"; /* page width in static characters */ static void abortpr __P((int)); static void banner __P((char *, char *)); static int dofork __P((int)); static int dropit __P((int)); static void init __P((void)); static void openpr __P((void)); static void opennet __P((char *)); static void opentty __P((void)); static void openrem __P((void)); static int print __P((int, char *)); static int printit __P((char *)); static void pstatus __P((const char *, ...)) __attribute__((__format__(__printf__, 1, 2))); static char response __P((void)); static void scan_out __P((int, char *, int)); static char *scnline __P((int, char *, int)); static int sendfile __P((int, char *)); static int sendit __P((char *)); static void sendmail __P((char *, int)); static void setty __P((void)); static void alarmer __P((int)); void printjob() { struct stat stb; struct queue *q, **qp; struct queue **queue; int i, nitems; off_t pidoff; int errcnt, count = 0; init(); /* set up capabilities */ (void)write(1, "", 1); /* ack that daemon is started */ (void)close(2); /* set up log file */ if (open(LF, O_WRONLY|O_APPEND, 0664) < 0) { syslog(LOG_ERR, "%s: %m", LF); (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); /* OK */ /* * uses short form file names */ if (chdir(SD) < 0) { syslog(LOG_ERR, "%s: %m", SD); exit(1); } if (stat(LO, &stb) == 0 && (stb.st_mode & S_IXUSR)) exit(0); /* printing disabled */ lfd = open(LO, O_WRONLY|O_CREAT, 0644); if (lfd < 0) { syslog(LOG_ERR, "%s: %s: %m", printer, LO); exit(1); } if (flock(lfd, LOCK_EX|LOCK_NB) < 0) { if (errno == EWOULDBLOCK) /* active deamon present */ exit(0); syslog(LOG_ERR, "%s: %s: %m", printer, LO); exit(1); } ftruncate(lfd, 0); /* * write process id for others to know */ pidoff = i = snprintf(line, sizeof(line), "%u\n", pid); if (write(lfd, line, i) != i) { syslog(LOG_ERR, "%s: %s: %m", printer, LO); exit(1); } /* * search the spool directory for work and sort by queue order. */ if ((nitems = getq(&queue)) < 0) { syslog(LOG_ERR, "%s: can't scan %s", printer, SD); exit(1); } if (nitems == 0) /* no work to do */ exit(0); if (stb.st_mode & S_IXOTH) { /* reset queue flag */ if (fchmod(lfd, stb.st_mode & 0776) < 0) syslog(LOG_ERR, "%s: %s: %m", printer, LO); } openpr(); /* 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); i = snprintf(line, sizeof(line), "%s\n", q->q_name); if (write(lfd, line, i) != i) syslog(LOG_ERR, "%s: %s: %m", printer, LO); if (!remote) i = printit(q->q_name); else i = sendit(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 & S_IXUSR) goto done; /* rebuild queue (after lpc topq) */ if (stb.st_mode & S_IXOTH) { for (free((char *) q); nitems--; free((char *) q)) q = *qp++; if (fchmod(lfd, stb.st_mode & 0776) < 0) syslog(LOG_WARNING, "%s: %s: %m", printer, LO); break; } } if (i == OK) /* file ok and printed */ count++; else if (i == REPRINT && ++errcnt < 5) { /* try reprinting the job */ syslog(LOG_INFO, "restarting %s", 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", printer, LO); openpr(); /* try to reopen printer */ goto restart; } else { syslog(LOG_WARNING, "%s: job could not be %s (%s)", printer, 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(logname, FATALERR); } } } free((char *) queue); /* * search the spool directory for more work. */ if ((nitems = getq(&queue)) < 0) { syslog(LOG_ERR, "%s: can't scan %s", printer, SD); exit(1); } if (nitems == 0) { /* no more work to do */ done: if (count > 0) { /* Files actually printed */ if (!SF && !tof) (void)write(ofd, FF, strlen(FF)); if (TR != NULL) /* output trailer */ (void)write(ofd, TR, strlen(TR)); } (void)unlink(tempfile); exit(0); } goto again; } #define FONTLEN 50 char fonts[4][FONTLEN]; /* 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(file) char *file; { 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", printer, file); return(OK); } /* * Reset troff fonts. */ for (i = 0; i < 4; i++) strncpy(fonts[i], ifonts[i], FONTLEN); (void)snprintf(&width[2], sizeof(width) - 2, "%ld", PW); indent[2] = '0'; indent[3] = '\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 * * 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); 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 (RS) { /* restricted */ if (getpwnam(logname) == NULL) { bombed = NOACCT; sendmail(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 { jobname[0] = ' '; jobname[1] = '\0'; } continue; case 'C': if (line[1] != '\0') { strncpy(class, line+1, sizeof(class) - 1); class[sizeof(class)-1] = '\0'; } 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 (!SH && !HL) banner(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, FONTLEN - 1); fonts[line[0]-'1'][50-1] = '\0'; } continue; case 'W': /* page width */ strncpy(width+2, line+1, sizeof(width) - 3); width[sizeof(width)-1] = '\0'; continue; case 'I': /* indent amount */ strncpy(indent+2, line+1, sizeof(indent) - 3); indent[sizeof(indent)-1] = '\0'; continue; default: /* some file to print */ switch (i = print(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(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 (!SH && HL) banner(line+1, jobname); continue; case 'M': if (bombed < NOACCT) /* already sent if >= NOACCT */ sendmail(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(format, file) int format; char *file; { FILE *fp; int status; struct stat stb; char *prog, *av[15], buf[BUFSIZ]; int n, fi, fo, pid, p[2], stopped = 0, nofile; 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 (S_ISLNK(stb.st_mode) && fstat(fi, &stb) == 0 && (stb.st_dev != fdev || stb.st_ino != fino)) return(ACCESS); if (!SF && !tof) { /* start on a fresh page */ (void)write(ofd, FF, strlen(FF)); tof = 1; } if (IF == NULL && (format == 'f' || format == 'l')) { 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 (IF == NULL) { /* use output filter */ prog = _PATH_PR; av[0] = "pr"; av[1] = width; av[2] = length; av[3] = "-h"; av[4] = *title ? title : " "; av[5] = 0; fo = ofd; goto start; } pipe(p); if ((prchild = dofork(DORETURN)) == 0) { /* child */ dup2(fi, 0); /* file is stdin */ dup2(p[1], 1); /* pipe is stdout */ closelog(); nofile = sysconf(_SC_OPEN_MAX); for (n = 3; n < nofile; n++) (void)close(n); execl(_PATH_PR, "pr", width, length, "-h", *title ? title : " ", 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 = IF; av[1] = width; av[2] = length; av[3] = indent; n = 4; break; case 'l': /* like 'f' but pass control characters */ prog = IF; av[1] = "-c"; av[2] = width; av[3] = length; av[4] = indent; n = 5; break; case 'r': /* print a fortran text file */ prog = RF; 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", 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') ? TF : (format == 'n') ? NF : DF; av[1] = pxwidth; av[2] = pxlength; n = 3; break; case 'c': /* print cifplot output */ prog = CF; av[1] = pxwidth; av[2] = pxlength; n = 3; break; case 'g': /* print plot(1G) output */ prog = GF; av[1] = pxwidth; av[2] = pxlength; n = 3; break; case 'v': /* print raster output */ prog = VF; av[1] = pxwidth; av[2] = pxlength; n = 3; break; default: (void)close(fi); syslog(LOG_ERR, "%s: illegal format character '%c'", printer, format); return(ERROR); } if (prog == NULL) { (void)close(fi); syslog(LOG_ERR, "%s: no filter found in printcap for format character '%c'", 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++] = AF; av[n] = 0; fo = pfd; if (ofilter > 0) { /* stop output filter */ write(ofd, "\031\1", 2); while ((pid = wait3(&status, WUNTRACED, 0)) > 0 && pid != ofilter) ; if (WIFSTOPPED(status) == 0) { (void)close(fi); syslog(LOG_WARNING, "%s: output filter died (retcode=%d termsig=%d)", printer, WEXITSTATUS(status), WTERMSIG(status)); return(REPRINT); } stopped++; } start: if ((child = dofork(DORETURN)) == 0) { /* child */ dup2(fi, 0); dup2(fo, 1); unlink(tempfile); n = open(tempfile, O_WRONLY|O_CREAT|O_TRUNC|O_EXCL, 0664); if (n >= 0) dup2(n, 2); closelog(); nofile = sysconf(_SC_OPEN_MAX); for (n = 3; n < nofile; n++) (void)close(n); execv(prog, av); syslog(LOG_ERR, "cannot execv %s", prog); exit(2); } if (child < 0) { child = 0; prchild = 0; tof = 0; syslog(LOG_ERR, "cannot start child process: %m"); return (ERROR); } (void)close(fi); while ((pid = wait(&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); } } tof = 0; /* Copy filter output to "lf" logfile */ if ((fp = fopen(tempfile, "r")) != NULL) { while (fgets(buf, sizeof(buf), fp)) fputs(buf, stderr); fclose(fp); } if (!WIFEXITED(status)) { syslog(LOG_WARNING, "%s: Daemon filter '%c' terminated (termsig=%d)", printer, format, WTERMSIG(status)); return(ERROR); } switch (WEXITSTATUS(status)) { case 0: tof = 1; return(OK); case 1: return(REPRINT); case 2: return(ERROR); default: syslog(LOG_WARNING, "%s: filter '%c' exited (retcode=%d)", printer, format, WEXITSTATUS(status)); 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(file) char *file; { 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; continue; } if (line[0] >= 'a' && line[0] <= 'z') { strncpy(last, line, sizeof(last) - 1); last[sizeof(last) - 1] = '\0'; while ((i = getline(cfp)) != 0) if (strcmp(last, line)) break; switch (sendfile('\3', last+1)) { case OK: if (i) goto again; break; case REPRINT: (void)fclose(cfp); return(REPRINT); case ACCESS: sendmail(logname, ACCESS); case ERROR: err = ERROR; } break; } } if (err == OK && sendfile('\2', file) > 0) { (void)fclose(cfp); return(REPRINT); } /* * pass 2 */ fseek(cfp, 0L, 0); while (getline(cfp)) if (line[0] == 'U' && strchr(line+1, '/') == 0) (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(type, file) int type; char *file; { int f, i, amt; struct stat stb; char buf[BUFSIZ]; int sizerr, resp; 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 (S_ISLNK(stb.st_mode) && fstat(f, &stb) == 0 && (stb.st_dev != fdev || stb.st_ino != fino)) return(ACCESS); amt = snprintf(buf, sizeof(buf), "%c%lld %s\n", type, (long long)stb.st_size, file); for (i = 0; ; i++) { if (write(pfd, buf, amt) != amt || (resp = response()) < 0 || resp == '\1') { (void)close(f); return(REPRINT); } else if (resp == '\0') break; if (i == 0) pstatus("no space on remote; waiting for queue to drain"); if (i == 10) syslog(LOG_ALERT, "%s: can't send to %s; queue full", printer, RM); sleep(5 * 60); } if (i) pstatus("sending to %s", RM); sizerr = 0; for (i = 0; i < stb.st_size; i += BUFSIZ) { struct sigaction osa, nsa; amt = BUFSIZ; if (i + amt > stb.st_size) amt = stb.st_size - i; if (sizerr == 0 && read(f, buf, amt) != amt) sizerr = 1; nsa.sa_handler = alarmer; sigemptyset(&nsa.sa_mask); sigaddset(&nsa.sa_mask, SIGALRM); nsa.sa_flags = 0; (void)sigaction(SIGALRM, &nsa, &osa); alarm(wait_time); if (write(pfd, buf, amt) != amt) { alarm(0); (void)sigaction(SIGALRM, &osa, NULL); (void)close(f); return(REPRINT); } alarm(0); (void)sigaction(SIGALRM, &osa, NULL); } (void)close(f); if (sizerr) { syslog(LOG_INFO, "%s: %s: changed size", printer, file); /* tell recvjob to ignore this file */ (void)write(pfd, "\1", 1); return(ERROR); } if (write(pfd, "", 1) != 1 || response()) return(REPRINT); 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() { struct sigaction osa, nsa; char resp; nsa.sa_handler = alarmer; sigemptyset(&nsa.sa_mask); sigaddset(&nsa.sa_mask, SIGALRM); nsa.sa_flags = 0; (void)sigaction(SIGALRM, &nsa, &osa); alarm(wait_time); if (read(pfd, &resp, 1) != 1) { syslog(LOG_INFO, "%s: lost connection", printer); resp = -1; } alarm(0); (void)sigaction(SIGALRM, &osa, NULL); return (resp); } /* * Banner printing stuff */ static void banner(name1, name2) char *name1, *name2; { time_t tvec; time(&tvec); if (!SF && !tof) (void)write(ofd, FF, strlen(FF)); if (SB) { /* 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(ofd, name1, '\0'); (void)write(ofd, "\n\n", 2); scan_out(ofd, name2, '\0'); if (class[0]) { (void)write(ofd,"\n\n\n",3); scan_out(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 (!SF) (void)write(ofd, FF, strlen(FF)); tof = 1; } static char * scnline(key, p, c) int key; char *p; int c; { int scnwidth; for (scnwidth = WIDTH; --scnwidth;) { key <<= 1; *p++ = key & 0200 ? c : BACKGND; } return (p); } #define TRC(q) (((q)-' ')&0177) static void scan_out(scfd, scsp, dlm) int scfd, dlm; char *scsp; { char *strp; int nchrs, j; char outbuf[LINELEN+1], *sp, c, cc; int d, scnhgt; extern char scnkey[][HEIGHT]; /* in lpdchar.c */ 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++ >= PW/(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(user, bombed) char *user; int bombed; { int i, p[2], s, nofile; char *cp = NULL; /* XXX gcc */ struct stat stb; FILE *fp; if (user[0] == '-' || user[0] == '/' || !isprint(user[0])) return; pipe(p); if ((s = dofork(DORETURN)) == 0) { /* child */ dup2(p[0], 0); closelog(); nofile = sysconf(_SC_OPEN_MAX); for (i = 3; i < nofile; i++) (void)close(i); 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", printer, *jobname ? jobname : ""); printf("Reply-To: root@%s\n\n", host); printf("Your printer job "); if (*jobname) printf("(%s) ", jobname); 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: cp = "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); 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_ERR, "fork for sendmail failed: %m"); } (void)close(p[0]); (void)close(p[1]); if (s > 0) { wait(NULL); syslog(LOG_INFO, "mail sent to user %s about job %s on " "printer %s (%s)", user, *jobname ? jobname : "", printer, cp); } } /* * dofork - fork with retries on failure */ static int dofork(action) int action; { int i, pid; struct passwd *pw; 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) { pw = getpwuid(DU); if (pw == 0) { syslog(LOG_ERR, "uid %ld not in password file", DU); break; } initgroups(pw->pw_name, pw->pw_gid); setgid(pw->pw_gid); setuid(DU); } 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) ; exit(0); } static void init() { int status; char *s; if ((status = cgetent(&bp, printcapdb, printer)) == -2) { syslog(LOG_ERR, "can't open printer description file"); exit(1); } else if (status == -1) { syslog(LOG_ERR, "unknown printer: %s", printer); exit(1); } else if (status == -3) fatal("potential reference loop detected in printcap file"); if (cgetstr(bp, "lp", &LP) == -1) LP = _PATH_DEFDEVLP; if (cgetstr(bp, "rp", &RP) == -1) RP = DEFLP; if (cgetstr(bp, "lo", &LO) == -1) LO = DEFLOCK; if (cgetstr(bp, "st", &ST) == -1) ST = DEFSTAT; if (cgetstr(bp, "lf", &LF) == -1) LF = _PATH_CONSOLE; if (cgetstr(bp, "sd", &SD) == -1) SD = _PATH_DEFSPOOL; if (cgetnum(bp, "du", &DU) < 0) DU = DEFUID; if (cgetstr(bp,"ff", &FF) == -1) FF = DEFFF; if (cgetnum(bp, "pw", &PW) < 0) PW = DEFWIDTH; (void)snprintf(&width[2], sizeof(width) - 2, "%ld", PW); if (cgetnum(bp, "pl", &PL) < 0) PL = DEFLENGTH; (void)snprintf(&length[2], sizeof(length) - 2, "%ld", PL); if (cgetnum(bp,"px", &PX) < 0) PX = 0; (void)snprintf(&pxwidth[2], sizeof(pxwidth) - 2, "%ld", PX); if (cgetnum(bp, "py", &PY) < 0) PY = 0; (void)snprintf(&pxlength[2], sizeof(pxlength) - 2, "%ld", PY); cgetstr(bp, "rm", &RM); if ((s = checkremote()) != NULL) syslog(LOG_WARNING, "%s", s); cgetstr(bp, "af", &AF); cgetstr(bp, "of", &OF); cgetstr(bp, "if", &IF); cgetstr(bp, "rf", &RF); cgetstr(bp, "tf", &TF); cgetstr(bp, "nf", &NF); cgetstr(bp, "df", &DF); cgetstr(bp, "gf", &GF); cgetstr(bp, "vf", &VF); cgetstr(bp, "cf", &CF); cgetstr(bp, "tr", &TR); RS = (cgetcap(bp, "rs", ':') != NULL); SF = (cgetcap(bp, "sf", ':') != NULL); SH = (cgetcap(bp, "sh", ':') != NULL); SB = (cgetcap(bp, "sb", ':') != NULL); HL = (cgetcap(bp, "hl", ':') != NULL); RW = (cgetcap(bp, "rw", ':') != NULL); cgetnum(bp, "br", &BR); if (cgetnum(bp, "fc", &FC) < 0) FC = 0; if (cgetnum(bp, "fs", &FS) < 0) FS = 0; if (cgetnum(bp, "xc", &XC) < 0) XC = 0; if (cgetnum(bp, "xs", &XS) < 0) XS = 0; cgetstr(bp, "ms", &MS); tof = (cgetcap(bp, "fo", ':') == NULL); } /* * Acquire line printer or remote connection. */ static void openpr() { int i, nofile; char *cp; extern int rflag; if (!remote && *LP) { if ((cp = strchr(LP, '@'))) opennet(cp); else opentty(); } else if (remote) { openrem(); } else { syslog(LOG_ERR, "%s: no line printer device or host name", printer); exit(1); } /* * Start up an output filter, if needed. */ if ((!remote || rflag) && OF) { int p[2]; pipe(p); if ((ofilter = dofork(DOABORT)) == 0) { /* child */ dup2(p[0], 0); /* pipe is std in */ dup2(pfd, 1); /* printer is std out */ closelog(); nofile = sysconf(_SC_OPEN_MAX); for (i = 3; i < nofile; i++) (void)close(i); if ((cp = strrchr(OF, '/')) == NULL) cp = OF; else cp++; execl(OF, cp, width, length, 0); syslog(LOG_ERR, "%s: %s: %m", printer, OF); 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(cp) char *cp; { int i; int resp, port; char save_ch; save_ch = *cp; *cp = '\0'; port = atoi(LP); if (port <= 0) { syslog(LOG_ERR, "%s: bad port number: %s", printer, LP); exit(1); } *cp++ = save_ch; for (i = 1; ; i = i < 256 ? i << 1 : i) { resp = -1; pfd = getport(cp, port); 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("waiting for %s to come up", LP); else pstatus("waiting for access to printer on %s", LP); } sleep(i); } pstatus("sending to %s port %d", cp, port); } /* * Printer is connected to an RS232 port on this host */ static void opentty() { int i; for (i = 1; ; i = i < 32 ? i << 1 : i) { pfd = open(LP, RW ? O_RDWR : O_WRONLY); if (pfd >= 0) { delay(500); break; } if (errno == ENOENT) { syslog(LOG_ERR, "%s: %m", LP); exit(1); } if (i == 1) pstatus("waiting for %s to become ready (offline ?)", printer); sleep(i); } if (isatty(pfd)) setty(); pstatus("%s is ready and printing", printer); } /* * Printer is on a remote host */ static void openrem() { int i, n; int resp; for (i = 1; ; i = i < 256 ? i << 1 : i) { resp = -1; pfd = getport(RM, 0); if (pfd >= 0) { n = snprintf(line, sizeof(line), "\2%s\n", RP); if (write(pfd, line, n) == n && (resp = response()) == '\0') break; (void) close(pfd); } if (i == 1) { if (resp < 0) pstatus("waiting for %s to come up", RM); else { pstatus("waiting for queue to be enabled on %s", RM); i = 256; } } sleep(i); } pstatus("sending to %s", RM); } static void alarmer(s) int s; { /* nothing */ } #if !defined(__NetBSD__) struct bauds { int baud; int speed; } bauds[] = { 50, B50, 75, B75, 110, B110, 134, B134, 150, B150, 200, B200, 300, B300, 600, B600, 1200, B1200, 1800, B1800, 2400, B2400, 4800, B4800, 9600, B9600, 19200, B19200, 38400, B38400, 57600, B57600, 115200, B115200, 0, 0 }; #endif /* * setup tty lines. */ static void setty() { struct info i; char **argv, **ap, *p, *val; i.fd = pfd; i.set = i.wset = 0; if (ioctl(i.fd, TIOCEXCL, (char *)0) < 0) { syslog(LOG_ERR, "%s: ioctl(TIOCEXCL): %m", printer); exit(1); } if (tcgetattr(i.fd, &i.t) < 0) { syslog(LOG_ERR, "%s: tcgetattr: %m", printer); exit(1); } if (BR > 0) { #if !defined(__NetBSD__) struct bauds *bp; for (bp = bauds; bp->baud; bp++) if (BR == bp->baud) break; if (!bp->baud) { syslog(LOG_ERR, "%s: illegal baud rate %d", printer, BR); exit(1); } cfsetspeed(&i.t, bp->speed); #else cfsetspeed(&i.t, BR); #endif i.set = 1; } if (MS) { if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0) { syslog(LOG_ERR, "%s: ioctl(TIOCGETD): %m", printer); exit(1); } if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0) syslog(LOG_INFO, "%s: ioctl(TIOCGWINSZ): %m", printer); argv = (char **)calloc(256, sizeof(char *)); if (argv == NULL) { syslog(LOG_ERR, "%s: calloc: %m", printer); exit(1); } p = strdup(MS); ap = argv; while ((val = strsep(&p, " \t,")) != NULL) { *ap++ = strdup(val); } for (; *argv; ++argv) { if (ksearch(&argv, &i)) continue; if (msearch(&argv, &i)) continue; syslog(LOG_INFO, "%s: unknown stty flag: %s", printer, *argv); } } else { if (FC) { sttyclearflags(&i.t, FC); i.set = 1; } if (FS) { sttysetflags(&i.t, FS); i.set = 1; } if (XC) { sttyclearlflags(&i.t, XC); i.set = 1; } if (XS) { sttysetlflags(&i.t, XS); i.set = 1; } } if (i.set && tcsetattr(i.fd, TCSANOW, &i.t) < 0) { syslog(LOG_ERR, "%s: tcsetattr: %m", printer); exit(1); } if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0) syslog(LOG_INFO, "%s: ioctl(TIOCSWINSZ): %m", printer); return; } #ifdef __STDC__ #include #else #include #endif static void #ifdef __STDC__ pstatus(const char *msg, ...) #else pstatus(msg, va_alist) 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(ST, O_WRONLY|O_CREAT, 0664); if (fd < 0 || flock(fd, LOCK_EX) < 0) { syslog(LOG_ERR, "%s: %s: %m", printer, ST); exit(1); } ftruncate(fd, 0); (void)vasprintf(&buf, msg, ap); va_end(ap); /* XXX writev */ (void)write(fd, buf, strlen(buf)); (void)write(fd, "\n", 2); (void)close(fd); free(buf); }