diff options
author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1995-10-18 08:53:40 +0000 |
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committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1995-10-18 08:53:40 +0000 |
commit | d6583bb2a13f329cf0332ef2570eb8bb8fc0e39c (patch) | |
tree | ece253b876159b39c620e62b6c9b1174642e070e /usr.sbin/lpr/lpd/printjob.c |
initial import of NetBSD tree
Diffstat (limited to 'usr.sbin/lpr/lpd/printjob.c')
-rw-r--r-- | usr.sbin/lpr/lpd/printjob.c | 1429 |
1 files changed, 1429 insertions, 0 deletions
diff --git a/usr.sbin/lpr/lpd/printjob.c b/usr.sbin/lpr/lpd/printjob.c new file mode 100644 index 00000000000..9e7e334b969 --- /dev/null +++ b/usr.sbin/lpr/lpd/printjob.c @@ -0,0 +1,1429 @@ +/* + * 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 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 8.2 (Berkeley) 4/16/94"; +#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 <sys/param.h> +#include <sys/wait.h> +#include <sys/stat.h> +#include <sys/types.h> + +#include <pwd.h> +#include <unistd.h> +#include <signal.h> +#include <termios.h> +#include <syslog.h> +#include <fcntl.h> +#include <dirent.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#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 int remote; /* true if sending files to remote */ +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 int print __P((int, char *)); +static int printit __P((char *)); +static void pstatus __P((const char *, ...)); +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 set_ttyflags __P((struct termios *)); +static void setty __P((void)); + +void +printjob() +{ + struct stat stb; + register struct queue *q, **qp; + struct queue **queue; + register int i, nitems; + long pidoff; + int 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); + + /* + * 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 & 0100)) + 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 + */ + sprintf(line, "%u\n", pid); + pidoff = i = strlen(line); + 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 & 01) { /* 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; + restart: + (void) lseek(lfd, (off_t)pidoff, 0); + (void) sprintf(line, "%s\n", q->q_name); + i = strlen(line); + 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 & 0100) + goto done; + /* rebuild queue (after lpc topq) */ + if (stb.st_mode & 01) { + 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) { /* 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(0)) > 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; + } + } + 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; +} + +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(file) + 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", printer, file); + return(OK); + } + /* + * Reset troff fonts. + */ + for (i = 0; i < 4; i++) + strcpy(fonts[i], ifonts[i]); + sprintf(&width[2], "%d", PW); + 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 + * 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': + strcpy(fromhost, line+1); + if (class[0] == '\0') + strncpy(class, line+1, sizeof(class)-1); + continue; + + case 'P': + strncpy(logname, line+1, sizeof(logname)-1); + 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); + 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)); + continue; + + case 'T': /* header title for pr */ + strncpy(title, line+1, sizeof(title)-1); + 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') + strcpy(fonts[line[0]-'1'], line+1); + continue; + + case 'W': /* page width */ + strncpy(width+2, line+1, sizeof(width)-3); + continue; + + case 'I': /* indent amount */ + strncpy(indent+2, line+1, sizeof(indent)-3); + 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': + 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': + (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; +{ + register int n; + 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 (!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 */ + 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 ((av[0] = rindex(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((int *)&status, WUNTRACED, 0)) > 0 && pid != ofilter) + ; + if (status.w_stopval != WSTOPPED) { + (void) close(fi); + syslog(LOG_WARNING, "%s: output filter died (%d)", + printer, status.w_retcode); + return(REPRINT); + } + stopped++; + } +start: + if ((child = dofork(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); + for (n = 3; n < NOFILE; n++) + (void) close(n); + 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); + } + } + 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: Daemon filter '%c' terminated (%d)", + printer, format, status.w_termsig); + return(ERROR); + } + switch (status.w_retcode) { + case 0: + tof = 1; + return(OK); + case 1: + return(REPRINT); + default: + syslog(LOG_WARNING, "%s: Daemon filter '%c' exited (%d)", + printer, format, status.w_retcode); + case 2: + return(ERROR); + } +} + +/* + * 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; +{ + 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; + continue; + } + if (line[0] >= 'a' && line[0] <= 'z') { + strcpy(last, line); + while (i = getline(cfp)) + 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') + (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; +{ + register 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 ((stb.st_mode & S_IFMT) == S_IFLNK && fstat(f, &stb) == 0 && + (stb.st_dev != fdev || stb.st_ino != fino)) + return(ACCESS); + (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()) < 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) { + 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); + return(REPRINT); + } + } + + + + + (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() +{ + char resp; + + if (read(pfd, &resp, 1) != 1) { + syslog(LOG_INFO, "%s: lost connection", printer); + return(-1); + } + return(resp); +} + +/* + * Banner printing stuff + */ +static void +banner(name1, name2) + char *name1, *name2; +{ + time_t tvec; + extern char *ctime(); + + 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) + register int key; + register char *p; + int c; +{ + register 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; +{ + register char *strp; + register 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[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; +{ + register int i; + int p[2], s; + register char *cp; + char buf[100]; + struct stat stb; + FILE *fp; + + pipe(p); + if ((s = dofork(DORETURN)) == 0) { /* child */ + dup2(p[0], 0); + for (i = 3; i < NOFILE; i++) + (void) close(i); + if ((cp = rindex(_PATH_SENDMAIL, '/')) != NULL) + cp++; + else + cp = _PATH_SENDMAIL; + sprintf(buf, "%s@%s", user, fromhost); + execl(_PATH_SENDMAIL, cp, buf, 0); + exit(0); + } else if (s > 0) { /* parent */ + dup2(p[1], 1); + printf("To: %s@%s\n", user, fromhost); + printf("Subject: printer job\n\n"); + printf("Your printer job "); + if (*jobname) + printf("(%s) ", jobname); + switch (bombed) { + case OK: + printf("\ncompleted successfully\n"); + break; + default: + case FATALERR: + printf("\ncould not be printed\n"); + break; + case NOACCT: + printf("\ncould not be printed without an account on %s\n", host); + break; + case FILTERERR: + if (stat(tempfile, &stb) < 0 || stb.st_size == 0 || + (fp = fopen(tempfile, "r")) == NULL) { + printf("\nwas printed but had some errors\n"); + break; + } + printf("\nwas printed but had the following errors:\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"); + } + fflush(stdout); + (void) close(1); + } + (void) close(p[0]); + (void) close(p[1]); + wait(&s); +} + +/* + * dofork - fork with retries on failure + */ +static int +dofork(action) + int action; +{ + register 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 %d 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; + sprintf(&width[2], "%d", PW); + if (cgetnum(bp, "pl", &PL) < 0) + PL = DEFLENGTH; + sprintf(&length[2], "%d", PL); + if (cgetnum(bp,"px", &PX) < 0) + PX = 0; + sprintf(&pxwidth[2], "%d", PX); + if (cgetnum(bp, "py", &PY) < 0) + PY = 0; + sprintf(&pxlength[2], "%d", PY); + cgetstr(bp, "rm", &RM); + if (s = checkremote()) + syslog(LOG_WARNING, 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() +{ + register int i, n; + int resp; + + if (!sendtorem && *LP) { + for (i = 1; ; i = i < 32 ? i << 1 : i) { + pfd = open(LP, RW ? O_RDWR : O_WRONLY); + if (pfd >= 0) + 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); + } else if (RM != NULL) { + for (i = 1; ; i = i < 256 ? i << 1 : i) { + resp = -1; + pfd = getport(RM); + if (pfd >= 0) { + (void) sprintf(line, "\2%s\n", RP); + n = strlen(line); + 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); + remote = 1; + } else { + syslog(LOG_ERR, "%s: no line printer device or host name", + printer); + exit(1); + } + /* + * Start up an output filter, if needed. + */ + if (!remote && OF) { + int p[2]; + char *cp; + + pipe(p); + if ((ofilter = dofork(DOABORT)) == 0) { /* child */ + dup2(p[0], 0); /* pipe is std in */ + dup2(pfd, 1); /* printer is std out */ + for (i = 3; i < NOFILE; i++) + (void) close(i); + if ((cp = rindex(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; + } +} + +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, + 0, 0 +}; + +/* + * setup tty lines. + */ +static void +setty() +{ + register struct bauds *bp; + 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) { + 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); + 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, XC); + 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; +} + +#if __STDC__ +#include <stdarg.h> +#else +#include <varargs.h> +#endif + +void +#if __STDC__ +pstatus(const char *msg, ...) +#else +pstatus(msg, va_alist) + char *msg; + va_dcl +#endif +{ + register int fd; + char buf[BUFSIZ]; + va_list ap; +#if __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)vsnprintf(buf, sizeof(buf), msg, ap); + va_end(ap); + strcat(buf, "\n"); + (void) write(fd, buf, strlen(buf)); + (void) close(fd); +} |