| 1 | /* printjob.c 4.6 83/06/02 */ |
| 2 | /* |
| 3 | * printjob -- print jobs in the queue. |
| 4 | * |
| 5 | * NOTE: the lock file is used to pass information to lpq and lprm. |
| 6 | * it does not need to be removed because file locks are dynamic. |
| 7 | */ |
| 8 | |
| 9 | #include "lp.h" |
| 10 | |
| 11 | #define DORETURN 0 /* absorb fork error */ |
| 12 | #define DOABORT 1 /* abort if dofork fails */ |
| 13 | |
| 14 | static char title[80]; /* ``pr'' title */ |
| 15 | static FILE *cfp; /* control file */ |
| 16 | static int pfd; /* printer file descriptor */ |
| 17 | static int ofd; /* output filter file descriptor */ |
| 18 | static int lfd; /* lock file descriptor */ |
| 19 | static int pid; /* pid of lpd process */ |
| 20 | static int prchild; /* id of pr process */ |
| 21 | static int child; /* id of any filters */ |
| 22 | static int ofilter; /* id of output filter, if any */ |
| 23 | static int tof; /* true if at top of form */ |
| 24 | static int remote; /* true if sending files to remote */ |
| 25 | |
| 26 | static char logname[32]; /* user's login name */ |
| 27 | static char jobname[32]; /* job or file name */ |
| 28 | static char class[32]; /* classification field */ |
| 29 | static char width[10] = "-w"; /* page width in characters */ |
| 30 | static char length[10] = "-l"; /* page length in lines */ |
| 31 | static char pxwidth[10] = "-x"; /* page width in pixels */ |
| 32 | static char pxlength[10] = "-y"; /* page length in pixels */ |
| 33 | static char indent[10] = "-i0"; /* indentation size in characters */ |
| 34 | |
| 35 | printjob() |
| 36 | { |
| 37 | struct stat stb; |
| 38 | register struct queue *q, **qp; |
| 39 | struct queue **queue; |
| 40 | register int i, nitems; |
| 41 | long pidoff; |
| 42 | extern int onintr(); |
| 43 | |
| 44 | init(); /* set up capabilities */ |
| 45 | (void) close(1); /* set up log file */ |
| 46 | (void) close(2); |
| 47 | if (open(LF, FWRONLY|FAPPEND, 0) < 0) |
| 48 | (void) open("/dev/null", FWRONLY); |
| 49 | dup(1); |
| 50 | pid = getpid(); /* for use with lprm */ |
| 51 | setpgrp(0, pid); |
| 52 | sigset(SIGINT, onintr); |
| 53 | |
| 54 | /* |
| 55 | * uses short form file names |
| 56 | */ |
| 57 | if (chdir(SD) < 0) { |
| 58 | log("cannot chdir to %s", SD); |
| 59 | exit(1); |
| 60 | } |
| 61 | if (stat(LO, &stb) == 0 && (stb.st_mode & 0100)) |
| 62 | exit(0); /* printing disabled */ |
| 63 | if ((lfd = open(LO, FWRONLY|FCREATE|FTRUNCATE|FEXLOCK|FNBLOCK, 0664)) < 0) { |
| 64 | if (errno == EWOULDBLOCK) /* active deamon present */ |
| 65 | exit(0); |
| 66 | log("cannot create %s", LO); |
| 67 | exit(1); |
| 68 | } |
| 69 | /* |
| 70 | * write process id for others to know |
| 71 | */ |
| 72 | sprintf(line, "%u\n", pid); |
| 73 | pidoff = i = strlen(line); |
| 74 | if (write(lfd, line, i) != i) { |
| 75 | log("cannot write daemon pid"); |
| 76 | exit(1); |
| 77 | } |
| 78 | /* |
| 79 | * search the spool directory for work and sort by queue order. |
| 80 | */ |
| 81 | if ((nitems = getq(&queue)) < 0) { |
| 82 | log("can't scan spool directory %s", SD); |
| 83 | exit(1); |
| 84 | } |
| 85 | if (nitems == 0) /* no work to do */ |
| 86 | exit(0); |
| 87 | openpr(); /* open printer or remote */ |
| 88 | again: |
| 89 | /* |
| 90 | * we found something to do now do it -- |
| 91 | * write the name of the current control file into the lock file |
| 92 | * so the spool queue program can tell what we're working on |
| 93 | */ |
| 94 | for (qp = queue; nitems--; free((char *) q)) { |
| 95 | q = *qp++; |
| 96 | if (stat(q->q_name, &stb) < 0) |
| 97 | continue; |
| 98 | restart: |
| 99 | (void) lseek(lfd, pidoff, 0); |
| 100 | (void) sprintf(line, "%s\n", q->q_name); |
| 101 | i = strlen(line); |
| 102 | if (write(lfd, line, i) != i) |
| 103 | log("can't write (%d) control file name", errno); |
| 104 | if (!remote) |
| 105 | i = printit(q->q_name); |
| 106 | else |
| 107 | i = sendit(q->q_name); |
| 108 | /* |
| 109 | * Check to see if we are supposed to stop printing. |
| 110 | */ |
| 111 | if (stat(LO, &stb) == 0 && (stb.st_mode & 0100)) |
| 112 | goto done; |
| 113 | /* |
| 114 | * Check to see if we should try reprinting the job. |
| 115 | */ |
| 116 | if (i > 0) { |
| 117 | log("restarting"); |
| 118 | if (ofilter > 0) { |
| 119 | kill(ofilter, SIGCONT); /* to be sure */ |
| 120 | (void) close(ofd); |
| 121 | while ((i = wait(0)) > 0 && i != ofilter) |
| 122 | ; |
| 123 | ofilter = 0; |
| 124 | } |
| 125 | (void) close(pfd); /* close printer */ |
| 126 | (void) lseek(lfd, pidoff, 0); |
| 127 | if (write(lfd, "\n", 1) != 1) |
| 128 | log("can't write (%d) control file name", errno); |
| 129 | openpr(); /* try to reopen printer */ |
| 130 | goto restart; |
| 131 | } |
| 132 | } |
| 133 | free((char *) queue); |
| 134 | /* |
| 135 | * search the spool directory for more work. |
| 136 | */ |
| 137 | if ((nitems = getq(&queue)) < 0) { |
| 138 | log("can't scan spool directory %s", SD); |
| 139 | exit(1); |
| 140 | } |
| 141 | if (nitems == 0) { /* no more work to do */ |
| 142 | done: |
| 143 | if (!SF && !tof) |
| 144 | (void) write(ofd, FF, strlen(FF)); |
| 145 | if (TR != NULL) /* output trailer */ |
| 146 | (void) write(ofd, TR, strlen(TR)); |
| 147 | exit(0); |
| 148 | } |
| 149 | goto again; |
| 150 | } |
| 151 | |
| 152 | char fonts[4][50]; /* fonts for troff */ |
| 153 | |
| 154 | static char ifonts[4][18] = { |
| 155 | "/usr/lib/vfont/R", |
| 156 | "/usr/lib/vfont/I", |
| 157 | "/usr/lib/vfont/B", |
| 158 | "/usr/lib/vfont/S" |
| 159 | }; |
| 160 | |
| 161 | /* |
| 162 | * The remaining part is the reading of the control file (cf) |
| 163 | * and performing the various actions. |
| 164 | * Returns 0 if everthing was OK, 1 if we should try to reprint the job and |
| 165 | * -1 if a non-recoverable error occured. |
| 166 | */ |
| 167 | static |
| 168 | printit(file) |
| 169 | char *file; |
| 170 | { |
| 171 | register int i; |
| 172 | int bombed = 0; |
| 173 | |
| 174 | /* |
| 175 | * open control file |
| 176 | */ |
| 177 | if ((cfp = fopen(file, "r")) == NULL) { |
| 178 | log("control file (%s) open failure <errno = %d>", file, errno); |
| 179 | return(0); |
| 180 | } |
| 181 | /* |
| 182 | * Reset troff fonts. |
| 183 | */ |
| 184 | for (i = 0; i < 4; i++) |
| 185 | strcpy(fonts[i], ifonts[i]); |
| 186 | |
| 187 | /* |
| 188 | * read the control file for work to do |
| 189 | * |
| 190 | * file format -- first character in the line is a command |
| 191 | * rest of the line is the argument. |
| 192 | * valid commands are: |
| 193 | * |
| 194 | * J -- "job name" on banner page |
| 195 | * C -- "class name" on banner page |
| 196 | * L -- "literal" user's name to print on banner |
| 197 | * T -- "title" for pr |
| 198 | * H -- "host name" of machine where lpr was done |
| 199 | * P -- "person" user's login name |
| 200 | * I -- "indent" amount to indent output |
| 201 | * f -- "file name" name of text file to print |
| 202 | * l -- "file name" text file with control chars |
| 203 | * p -- "file name" text file to print with pr(1) |
| 204 | * t -- "file name" troff(1) file to print |
| 205 | * d -- "file name" dvi file to print |
| 206 | * g -- "file name" plot(1G) file to print |
| 207 | * v -- "file name" plain raster file to print |
| 208 | * c -- "file name" cifplot file to print |
| 209 | * 1 -- "R font file" for troff |
| 210 | * 2 -- "I font file" for troff |
| 211 | * 3 -- "B font file" for troff |
| 212 | * 4 -- "S font file" for troff |
| 213 | * N -- "name" of file (used by lpq) |
| 214 | * U -- "unlink" name of file to remove |
| 215 | * (after we print it. (Pass 2 only)). |
| 216 | * M -- "mail" to user when done printing |
| 217 | * |
| 218 | * getline reads a line and expands tabs to blanks |
| 219 | */ |
| 220 | |
| 221 | /* pass 1 */ |
| 222 | |
| 223 | while (getline(cfp)) |
| 224 | switch (line[0]) { |
| 225 | case 'H': |
| 226 | strcpy(host, line+1); |
| 227 | if (class[0] == '\0') |
| 228 | strcpy(class, line+1); |
| 229 | continue; |
| 230 | |
| 231 | case 'P': |
| 232 | strcpy(logname, line+1); |
| 233 | if (RS) { /* restricted */ |
| 234 | if (getpwnam(logname) == (struct passwd *)0) { |
| 235 | bombed = 2; |
| 236 | sendmail(bombed); |
| 237 | goto pass2; |
| 238 | } |
| 239 | } |
| 240 | continue; |
| 241 | |
| 242 | case 'J': |
| 243 | if (line[1] != '\0') |
| 244 | strcpy(jobname, line+1); |
| 245 | else |
| 246 | strcpy(jobname, " "); |
| 247 | continue; |
| 248 | |
| 249 | case 'C': |
| 250 | if (line[1] != '\0') |
| 251 | strcpy(class, line+1); |
| 252 | else if (class[0] == '\0') |
| 253 | gethostname(class, sizeof (class)); |
| 254 | continue; |
| 255 | |
| 256 | case 'T': /* header title for pr */ |
| 257 | strcpy(title, line+1); |
| 258 | continue; |
| 259 | |
| 260 | case 'L': /* identification line */ |
| 261 | if (!SH) |
| 262 | banner(line+1, jobname); |
| 263 | continue; |
| 264 | |
| 265 | case '1': /* troff fonts */ |
| 266 | case '2': |
| 267 | case '3': |
| 268 | case '4': |
| 269 | if (line[1] != '\0') |
| 270 | strcpy(fonts[line[0]-'1'], line+1); |
| 271 | continue; |
| 272 | |
| 273 | case 'W': /* page width */ |
| 274 | strcpy(width+2, line+1); |
| 275 | continue; |
| 276 | |
| 277 | case 'I': /* indent amount */ |
| 278 | strcpy(indent+2, line+1); |
| 279 | continue; |
| 280 | |
| 281 | default: /* some file to print */ |
| 282 | if ((i = print(line[0], line+1)) > 0) { |
| 283 | (void) fclose(cfp); |
| 284 | return(1); |
| 285 | } else if (i < 0) |
| 286 | bombed = 1; |
| 287 | title[0] = '\0'; |
| 288 | continue; |
| 289 | |
| 290 | case 'N': |
| 291 | case 'U': |
| 292 | case 'M': |
| 293 | continue; |
| 294 | } |
| 295 | |
| 296 | /* pass 2 */ |
| 297 | |
| 298 | pass2: |
| 299 | fseek(cfp, 0L, 0); |
| 300 | while (getline(cfp)) |
| 301 | switch (line[0]) { |
| 302 | case 'M': |
| 303 | if (bombed != 2) /* already sent if 2 */ |
| 304 | sendmail(bombed); |
| 305 | continue; |
| 306 | |
| 307 | case 'U': |
| 308 | (void) unlink(line+1); |
| 309 | } |
| 310 | /* |
| 311 | * clean-up incase another control file exists |
| 312 | */ |
| 313 | (void) fclose(cfp); |
| 314 | (void) unlink(file); |
| 315 | return(0); |
| 316 | } |
| 317 | |
| 318 | /* |
| 319 | * Print a file. |
| 320 | * Set up the chain [ PR [ | {IF, OF} ] ] or {IF, TF, CF, VF}. |
| 321 | * Return -1 if a non-recoverable error occured, 1 if a recoverable error and |
| 322 | * 0 if all is well. |
| 323 | * Note: all filters take stdin as the file, stdout as the printer, |
| 324 | * stderr as the log file, and must not ignore SIGINT. |
| 325 | */ |
| 326 | static |
| 327 | print(format, file) |
| 328 | int format; |
| 329 | char *file; |
| 330 | { |
| 331 | register int n, fi, fo; |
| 332 | register char *prog; |
| 333 | char *av[15], buf[BUFSIZ]; |
| 334 | int pid, p[2], stopped = 0; |
| 335 | union wait status; |
| 336 | |
| 337 | if ((fi = open(file, FRDONLY, 0)) < 0) { |
| 338 | log("%s: open failure <errno = %d>", file, errno); |
| 339 | return(-1); |
| 340 | } |
| 341 | if (!SF && !tof) { /* start on a fresh page */ |
| 342 | (void) write(ofd, FF, strlen(FF)); |
| 343 | tof = 1; |
| 344 | } |
| 345 | if (IF == NULL && (format == 'f' || format == 'l')) { |
| 346 | tof = 0; |
| 347 | while ((n = read(fi, buf, BUFSIZ)) > 0) |
| 348 | if (write(ofd, buf, n) != n) { |
| 349 | (void) close(fi); |
| 350 | return(1); |
| 351 | } |
| 352 | (void) close(fi); |
| 353 | return(0); |
| 354 | } |
| 355 | switch (format) { |
| 356 | case 'p': /* print file using 'pr' */ |
| 357 | if (IF == NULL) { /* use output filter */ |
| 358 | prog = PR; |
| 359 | av[0] = "pr"; |
| 360 | av[1] = width; |
| 361 | av[2] = length; |
| 362 | av[3] = "-h"; |
| 363 | av[4] = *title ? title : " "; |
| 364 | av[5] = 0; |
| 365 | fo = ofd; |
| 366 | goto start; |
| 367 | } |
| 368 | pipe(p); |
| 369 | if ((prchild = dofork(DORETURN)) == 0) { /* child */ |
| 370 | dup2(fi, 0); /* file is stdin */ |
| 371 | dup2(p[1], 1); /* pipe is stdout */ |
| 372 | for (n = 3; n < NOFILE; n++) |
| 373 | (void) close(n); |
| 374 | execl(PR, "pr", width, length, "-h", *title ? title : " ", 0); |
| 375 | log("cannot execl %s", PR); |
| 376 | exit(2); |
| 377 | } |
| 378 | (void) close(p[1]); /* close output side */ |
| 379 | (void) close(fi); |
| 380 | if (prchild < 0) { |
| 381 | prchild = 0; |
| 382 | (void) close(p[0]); |
| 383 | return(-1); |
| 384 | } |
| 385 | fi = p[0]; /* use pipe for input */ |
| 386 | case 'f': /* print plain text file */ |
| 387 | prog = IF; |
| 388 | av[1] = width; |
| 389 | av[2] = length; |
| 390 | av[3] = indent; |
| 391 | n = 4; |
| 392 | break; |
| 393 | case 'l': /* like 'f' but pass control characters */ |
| 394 | prog = IF; |
| 395 | av[1] = "-l"; |
| 396 | av[2] = width; |
| 397 | av[3] = length; |
| 398 | av[4] = indent; |
| 399 | n = 5; |
| 400 | break; |
| 401 | case 'r': /* print a fortran text file */ |
| 402 | prog = RF; |
| 403 | av[1] = width; |
| 404 | av[2] = length; |
| 405 | n = 3; |
| 406 | break; |
| 407 | case 't': /* print troff output */ |
| 408 | case 'd': /* print tex output */ |
| 409 | (void) unlink(".railmag"); |
| 410 | if ((fo = creat(".railmag", FILMOD)) < 0) { |
| 411 | log("cannot create .railmag"); |
| 412 | (void) unlink(".railmag"); |
| 413 | } else { |
| 414 | for (n = 0; n < 4; n++) { |
| 415 | if (fonts[n][0] != '/') |
| 416 | (void) write(fo, "/usr/lib/vfont/", 15); |
| 417 | (void) write(fo, fonts[n], strlen(fonts[n])); |
| 418 | (void) write(fo, "\n", 1); |
| 419 | } |
| 420 | (void) close(fo); |
| 421 | } |
| 422 | prog = (format == 't') ? TF : DF; |
| 423 | av[1] = pxwidth; |
| 424 | av[2] = pxlength; |
| 425 | n = 3; |
| 426 | break; |
| 427 | case 'c': /* print cifplot output */ |
| 428 | prog = CF; |
| 429 | av[1] = pxwidth; |
| 430 | av[2] = pxlength; |
| 431 | n = 3; |
| 432 | break; |
| 433 | case 'g': /* print plot(1G) output */ |
| 434 | prog = GF; |
| 435 | av[1] = pxwidth; |
| 436 | av[2] = pxlength; |
| 437 | n = 3; |
| 438 | break; |
| 439 | case 'v': /* print raster output */ |
| 440 | prog = VF; |
| 441 | av[1] = pxwidth; |
| 442 | av[2] = pxlength; |
| 443 | n = 3; |
| 444 | break; |
| 445 | default: |
| 446 | (void) close(fi); |
| 447 | log("illegal format character '%c'", format); |
| 448 | return(-1); |
| 449 | } |
| 450 | if ((av[0] = rindex(prog, '/')) != NULL) |
| 451 | av[0]++; |
| 452 | else |
| 453 | av[0] = prog; |
| 454 | av[n++] = "-n"; |
| 455 | av[n++] = logname; |
| 456 | av[n++] = "-h"; |
| 457 | av[n++] = host; |
| 458 | av[n++] = AF; |
| 459 | av[n] = 0; |
| 460 | fo = pfd; |
| 461 | if (ofilter > 0) { /* stop output filter */ |
| 462 | write(ofd, "\031\1", 2); |
| 463 | while ((pid = wait3(&status, WUNTRACED, 0)) > 0 && pid != ofilter) |
| 464 | ; |
| 465 | if (status.w_stopval != WSTOPPED) { |
| 466 | (void) close(fi); |
| 467 | log("output filter died (%d)", status.w_retcode); |
| 468 | return(1); |
| 469 | } |
| 470 | stopped++; |
| 471 | } |
| 472 | start: |
| 473 | if ((child = dofork(DORETURN)) == 0) { /* child */ |
| 474 | dup2(fi, 0); |
| 475 | dup2(fo, 1); |
| 476 | for (n = 3; n < NOFILE; n++) |
| 477 | (void) close(n); |
| 478 | execv(prog, av); |
| 479 | log("cannot execl %s", prog); |
| 480 | exit(2); |
| 481 | } |
| 482 | (void) close(fi); |
| 483 | if (child < 0) |
| 484 | status.w_retcode = 100; |
| 485 | else |
| 486 | while ((pid = wait(&status)) > 0 && pid != child) |
| 487 | ; |
| 488 | child = 0; |
| 489 | prchild = 0; |
| 490 | if (stopped) { /* restart output filter */ |
| 491 | if (kill(ofilter, SIGCONT) < 0) { |
| 492 | log("cannot restart output filter"); |
| 493 | exit(1); |
| 494 | } |
| 495 | } |
| 496 | tof = 0; |
| 497 | if (!WIFEXITED(status) || status.w_retcode > 1) { |
| 498 | log("Daemon Filter '%c' Malfunction (%d)", format, status.w_retcode); |
| 499 | return(-1); |
| 500 | } else if (status.w_retcode == 1) |
| 501 | return(1); |
| 502 | tof = 1; |
| 503 | return(0); |
| 504 | } |
| 505 | |
| 506 | /* |
| 507 | * Send the daemon control file (cf) and any data files. |
| 508 | * Return -1 if a non-recoverable error occured, 1 if a recoverable error and |
| 509 | * 0 if all is well. |
| 510 | */ |
| 511 | static |
| 512 | sendit(file) |
| 513 | char *file; |
| 514 | { |
| 515 | register int linelen, err = 0; |
| 516 | char last[132]; |
| 517 | |
| 518 | /* |
| 519 | * open control file |
| 520 | */ |
| 521 | if ((cfp = fopen(file, "r")) == NULL) { |
| 522 | log("control file (%s) open failure <errno = %d>", file, errno); |
| 523 | return(0); |
| 524 | } |
| 525 | /* |
| 526 | * read the control file for work to do |
| 527 | * |
| 528 | * file format -- first character in the line is a command |
| 529 | * rest of the line is the argument. |
| 530 | * commands of interest are: |
| 531 | * |
| 532 | * a-z -- "file name" name of file to print |
| 533 | * U -- "unlink" name of file to remove |
| 534 | * (after we print it. (Pass 2 only)). |
| 535 | */ |
| 536 | |
| 537 | /* |
| 538 | * pass 1 |
| 539 | */ |
| 540 | while (getline(cfp)) { |
| 541 | again: |
| 542 | if (line[0] >= 'a' && line[0] <= 'z') { |
| 543 | strcpy(last, line); |
| 544 | while (linelen = getline(cfp)) |
| 545 | if (strcmp(last, line)) |
| 546 | break; |
| 547 | if ((err = sendfile('\3', last+1)) > 0) { |
| 548 | (void) fclose(cfp); |
| 549 | return(1); |
| 550 | } else if (err) |
| 551 | break; |
| 552 | if (linelen) |
| 553 | goto again; |
| 554 | break; |
| 555 | } |
| 556 | } |
| 557 | if (!err && sendfile('\2', file) > 0) { |
| 558 | (void) fclose(cfp); |
| 559 | return(1); |
| 560 | } |
| 561 | /* |
| 562 | * pass 2 |
| 563 | */ |
| 564 | fseek(cfp, 0L, 0); |
| 565 | while (getline(cfp)) |
| 566 | if (line[0] == 'U') |
| 567 | (void) unlink(line+1); |
| 568 | /* |
| 569 | * clean-up incase another control file exists |
| 570 | */ |
| 571 | (void) fclose(cfp); |
| 572 | (void) unlink(file); |
| 573 | return(0); |
| 574 | } |
| 575 | |
| 576 | /* |
| 577 | * Send a data file to the remote machine and spool it. |
| 578 | * Return positive if we should try resending. |
| 579 | */ |
| 580 | static |
| 581 | sendfile(type, file) |
| 582 | char type, *file; |
| 583 | { |
| 584 | register int f, i, amt; |
| 585 | struct stat stb; |
| 586 | char buf[BUFSIZ]; |
| 587 | int sizerr; |
| 588 | |
| 589 | if ((f = open(file, FRDONLY, 0)) < 0 || fstat(f, &stb) < 0) { |
| 590 | log("file (%s) open failure <errno = %d>", file, errno); |
| 591 | return(-1); |
| 592 | } |
| 593 | (void) sprintf(buf, "%c%d %s\n", type, stb.st_size, file); |
| 594 | amt = strlen(buf); |
| 595 | if (write(pfd, buf, amt) != amt) { |
| 596 | (void) close(f); |
| 597 | return(1); |
| 598 | } |
| 599 | if (noresponse()) { |
| 600 | (void) close(f); |
| 601 | return(1); |
| 602 | } |
| 603 | sizerr = 0; |
| 604 | for (i = 0; i < stb.st_size; i += BUFSIZ) { |
| 605 | amt = BUFSIZ; |
| 606 | if (i + amt > stb.st_size) |
| 607 | amt = stb.st_size - i; |
| 608 | if (sizerr == 0 && read(f, buf, amt) != amt) |
| 609 | sizerr = 1; |
| 610 | if (write(pfd, buf, amt) != amt) { |
| 611 | (void) close(f); |
| 612 | return(1); |
| 613 | } |
| 614 | } |
| 615 | (void) close(f); |
| 616 | if (sizerr) { |
| 617 | log("%s: changed size", file); |
| 618 | (void) write(pfd, "\1", 1); /* tell recvjob to ignore this file */ |
| 619 | return(-1); |
| 620 | } |
| 621 | if (write(pfd, "", 1) != 1) |
| 622 | return(1); |
| 623 | if (noresponse()) |
| 624 | return(1); |
| 625 | return(0); |
| 626 | } |
| 627 | |
| 628 | /* |
| 629 | * Check to make sure there have been no errors and that both programs |
| 630 | * are in sync with eachother. |
| 631 | * Return non-zero if the connection was lost. |
| 632 | */ |
| 633 | static |
| 634 | noresponse() |
| 635 | { |
| 636 | char resp; |
| 637 | |
| 638 | if (read(pfd, &resp, 1) != 1 || resp != '\0') { |
| 639 | log("lost connection or error in recvjob"); |
| 640 | return(1); |
| 641 | } |
| 642 | return(0); |
| 643 | } |
| 644 | |
| 645 | /* |
| 646 | * Banner printing stuff |
| 647 | */ |
| 648 | static |
| 649 | banner(name1, name2) |
| 650 | char *name1, *name2; |
| 651 | { |
| 652 | time_t tvec; |
| 653 | extern char *ctime(); |
| 654 | |
| 655 | time(&tvec); |
| 656 | if (!SF && !tof) |
| 657 | (void) write(ofd, FF, strlen(FF)); |
| 658 | if (SB) { /* short banner only */ |
| 659 | if (class[0]) { |
| 660 | (void) write(ofd, class, strlen(class)); |
| 661 | (void) write(ofd, ":", 1); |
| 662 | } |
| 663 | (void) write(ofd, name1, strlen(name1)); |
| 664 | (void) write(ofd, " Job: ", 7); |
| 665 | (void) write(ofd, name2, strlen(name2)); |
| 666 | (void) write(ofd, " Date: ", 8); |
| 667 | (void) write(ofd, ctime(&tvec), 24); |
| 668 | (void) write(ofd, "\n", 1); |
| 669 | } else { /* normal banner */ |
| 670 | (void) write(ofd, "\n\n\n", 3); |
| 671 | scan_out(ofd, name1, '\0'); |
| 672 | (void) write(ofd, "\n\n", 2); |
| 673 | scan_out(ofd, name2, '\0'); |
| 674 | if (class[0]) { |
| 675 | (void) write(ofd,"\n\n\n",3); |
| 676 | scan_out(ofd, class, '\0'); |
| 677 | } |
| 678 | (void) write(ofd, "\n\n\n\n\t\t\t\t\tJob: ", 15); |
| 679 | (void) write(ofd, name2, strlen(name2)); |
| 680 | (void) write(ofd, "\n\t\t\t\t\tDate: ", 12); |
| 681 | (void) write(ofd, ctime(&tvec), 24); |
| 682 | (void) write(ofd, "\n", 1); |
| 683 | } |
| 684 | if (!SF) |
| 685 | (void) write(ofd, FF, strlen(FF)); |
| 686 | tof = 1; |
| 687 | } |
| 688 | |
| 689 | static char * |
| 690 | scnline(key, p, c) |
| 691 | register char key, *p; |
| 692 | char c; |
| 693 | { |
| 694 | register scnwidth; |
| 695 | |
| 696 | for (scnwidth = WIDTH; --scnwidth;) { |
| 697 | key <<= 1; |
| 698 | *p++ = key & 0200 ? c : BACKGND; |
| 699 | } |
| 700 | return (p); |
| 701 | } |
| 702 | |
| 703 | #define TRC(q) (((q)-' ')&0177) |
| 704 | |
| 705 | static |
| 706 | scan_out(scfd, scsp, dlm) |
| 707 | int scfd; |
| 708 | char *scsp, dlm; |
| 709 | { |
| 710 | register char *strp; |
| 711 | register nchrs, j; |
| 712 | char outbuf[LINELEN+1], *sp, c, cc; |
| 713 | int d, scnhgt; |
| 714 | extern char scnkey[][HEIGHT]; /* in lpdchar.c */ |
| 715 | |
| 716 | for (scnhgt = 0; scnhgt++ < HEIGHT+DROP; ) { |
| 717 | strp = &outbuf[0]; |
| 718 | sp = scsp; |
| 719 | for (nchrs = 0; ; ) { |
| 720 | d = dropit(c = TRC(cc = *sp++)); |
| 721 | if ((!d && scnhgt > HEIGHT) || (scnhgt <= DROP && d)) |
| 722 | for (j = WIDTH; --j;) |
| 723 | *strp++ = BACKGND; |
| 724 | else |
| 725 | strp = scnline(scnkey[c][scnhgt-1-d], strp, cc); |
| 726 | if (*sp == dlm || *sp == '\0' || nchrs++ >= PW/(WIDTH+1)-1) |
| 727 | break; |
| 728 | *strp++ = BACKGND; |
| 729 | *strp++ = BACKGND; |
| 730 | } |
| 731 | while (*--strp == BACKGND && strp >= outbuf) |
| 732 | ; |
| 733 | strp++; |
| 734 | *strp++ = '\n'; |
| 735 | (void) write(scfd, outbuf, strp-outbuf); |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | static |
| 740 | dropit(c) |
| 741 | char c; |
| 742 | { |
| 743 | switch(c) { |
| 744 | |
| 745 | case TRC('_'): |
| 746 | case TRC(';'): |
| 747 | case TRC(','): |
| 748 | case TRC('g'): |
| 749 | case TRC('j'): |
| 750 | case TRC('p'): |
| 751 | case TRC('q'): |
| 752 | case TRC('y'): |
| 753 | return (DROP); |
| 754 | |
| 755 | default: |
| 756 | return (0); |
| 757 | } |
| 758 | } |
| 759 | |
| 760 | /* |
| 761 | * sendmail --- |
| 762 | * tell people about job completion |
| 763 | */ |
| 764 | static |
| 765 | sendmail(bombed) |
| 766 | int bombed; |
| 767 | { |
| 768 | static int p[2]; |
| 769 | register int i; |
| 770 | int stat; |
| 771 | register char *cp; |
| 772 | char buf[100]; |
| 773 | |
| 774 | pipe(p); |
| 775 | if ((stat = dofork(DORETURN)) == 0) { /* child */ |
| 776 | dup2(p[0], 0); |
| 777 | for (i = 3; i < NOFILE; i++) |
| 778 | (void) close(i); |
| 779 | if ((cp = rindex(MAIL, '/')) != NULL) |
| 780 | cp++; |
| 781 | else |
| 782 | cp = MAIL; |
| 783 | sprintf(buf, "%s@%s", line+1, host); |
| 784 | execl(MAIL, cp, buf, 0); |
| 785 | exit(0); |
| 786 | } else if (stat > 0) { /* parent */ |
| 787 | dup2(p[1], 1); |
| 788 | printf("To: %s\n", line+1); |
| 789 | printf("Subject: printer job\n\n"); |
| 790 | printf("Your printer job "); |
| 791 | if (*jobname) |
| 792 | printf("(%s) ", jobname); |
| 793 | switch (bombed) { |
| 794 | case 0: |
| 795 | printf("\ncompleted successfully\n"); |
| 796 | break; |
| 797 | default: |
| 798 | case 1: |
| 799 | printf("\ncould not be printed\n"); |
| 800 | break; |
| 801 | case 2: |
| 802 | printf("\ncould not be printed without an account on %s\n", host); |
| 803 | break; |
| 804 | } |
| 805 | fflush(stdout); |
| 806 | (void) close(1); |
| 807 | } |
| 808 | (void) close(p[0]); |
| 809 | (void) close(p[1]); |
| 810 | wait(&stat); |
| 811 | } |
| 812 | |
| 813 | /* |
| 814 | * dofork - fork with retries on failure |
| 815 | */ |
| 816 | static |
| 817 | dofork(action) |
| 818 | int action; |
| 819 | { |
| 820 | register int i, pid; |
| 821 | |
| 822 | for (i = 0; i < 20; i++) { |
| 823 | if ((pid = fork()) < 0) { |
| 824 | sleep((unsigned)(i*i)); |
| 825 | continue; |
| 826 | } |
| 827 | /* |
| 828 | * Child should run as daemon instead of root |
| 829 | */ |
| 830 | if (pid == 0) |
| 831 | setuid(DU); |
| 832 | return(pid); |
| 833 | } |
| 834 | log("can't fork"); |
| 835 | |
| 836 | switch (action) { |
| 837 | case DORETURN: |
| 838 | return (-1); |
| 839 | default: |
| 840 | log("bad action (%d) to dofork", action); |
| 841 | /*FALL THRU*/ |
| 842 | case DOABORT: |
| 843 | exit(1); |
| 844 | } |
| 845 | /*NOTREACHED*/ |
| 846 | } |
| 847 | |
| 848 | /* |
| 849 | * Cleanup child processes when a SIGINT is caught. |
| 850 | */ |
| 851 | static |
| 852 | onintr() |
| 853 | { |
| 854 | kill(0, SIGINT); |
| 855 | if (ofilter > 0) |
| 856 | kill(ofilter, SIGCONT); |
| 857 | while (wait(0) > 0) |
| 858 | ; |
| 859 | exit(0); |
| 860 | } |
| 861 | |
| 862 | static |
| 863 | init() |
| 864 | { |
| 865 | int status; |
| 866 | |
| 867 | if ((status = pgetent(line, printer)) < 0) { |
| 868 | log("can't open printer description file"); |
| 869 | exit(1); |
| 870 | } else if (status == 0) { |
| 871 | log("unknown printer"); |
| 872 | exit(1); |
| 873 | } |
| 874 | if ((LP = pgetstr("lp", &bp)) == NULL) |
| 875 | LP = DEFDEVLP; |
| 876 | if ((RP = pgetstr("rp", &bp)) == NULL) |
| 877 | RP = DEFLP; |
| 878 | if ((LO = pgetstr("lo", &bp)) == NULL) |
| 879 | LO = DEFLOCK; |
| 880 | if ((ST = pgetstr("st", &bp)) == NULL) |
| 881 | ST = DEFSTAT; |
| 882 | if ((LF = pgetstr("lf", &bp)) == NULL) |
| 883 | LF = DEFLOGF; |
| 884 | if ((SD = pgetstr("sd", &bp)) == NULL) |
| 885 | SD = DEFSPOOL; |
| 886 | if ((DU = pgetnum("du")) < 0) |
| 887 | DU = DEFUID; |
| 888 | if ((FF = pgetstr("ff", &bp)) == NULL) |
| 889 | FF = DEFFF; |
| 890 | if ((PW = pgetnum("pw")) < 0) |
| 891 | PW = DEFWIDTH; |
| 892 | sprintf(&width[2], "%d", PW); |
| 893 | if ((PL = pgetnum("pl")) < 0) |
| 894 | PL = DEFLENGTH; |
| 895 | sprintf(&length[2], "%d", PL); |
| 896 | if ((PX = pgetnum("px")) < 0) |
| 897 | PX = 0; |
| 898 | sprintf(&pxwidth[2], "%d", PX); |
| 899 | if ((PY = pgetnum("py")) < 0) |
| 900 | PY = 0; |
| 901 | sprintf(&pxlength[2], "%d", PY); |
| 902 | RM = pgetstr("rm", &bp); |
| 903 | AF = pgetstr("af", &bp); |
| 904 | OF = pgetstr("of", &bp); |
| 905 | IF = pgetstr("if", &bp); |
| 906 | RF = pgetstr("rf", &bp); |
| 907 | TF = pgetstr("tf", &bp); |
| 908 | DF = pgetstr("df", &bp); |
| 909 | GF = pgetstr("gf", &bp); |
| 910 | VF = pgetstr("vf", &bp); |
| 911 | CF = pgetstr("cf", &bp); |
| 912 | TR = pgetstr("tr", &bp); |
| 913 | RS = pgetflag("rs"); |
| 914 | SF = pgetflag("sf"); |
| 915 | SH = pgetflag("sh"); |
| 916 | SB = pgetflag("sb"); |
| 917 | RW = pgetflag("rw"); |
| 918 | BR = pgetnum("br"); |
| 919 | if ((FC = pgetnum("fc")) < 0) |
| 920 | FC = 0; |
| 921 | if ((FS = pgetnum("fs")) < 0) |
| 922 | FS = 0; |
| 923 | if ((XC = pgetnum("xc")) < 0) |
| 924 | XC = 0; |
| 925 | if ((XS = pgetnum("xs")) < 0) |
| 926 | XS = 0; |
| 927 | tof = !pgetflag("fo"); |
| 928 | } |
| 929 | |
| 930 | /* |
| 931 | * Acquire line printer or remote connection. |
| 932 | */ |
| 933 | static |
| 934 | openpr() |
| 935 | { |
| 936 | register int i, n; |
| 937 | |
| 938 | if (*LP) { |
| 939 | for (i = 1; ; i = i < 32 ? i << 1 : i) { |
| 940 | pfd = open(LP, RW ? FRDWR : FWRONLY, 0); |
| 941 | if (pfd >= 0) |
| 942 | break; |
| 943 | if (errno == ENOENT) { |
| 944 | log("cannot open %s", LP); |
| 945 | exit(1); |
| 946 | } |
| 947 | if (i == 1) |
| 948 | status("waiting for %s to become ready (offline ?)", printer); |
| 949 | sleep(i); |
| 950 | } |
| 951 | if (isatty(pfd)) |
| 952 | setty(); |
| 953 | status("%s is ready and printing", printer); |
| 954 | } else if (RM != NULL) { |
| 955 | for (i = 1; ; i = i < 512 ? i << 1 : i) { |
| 956 | pfd = getport(RM); |
| 957 | if (pfd >= 0) { |
| 958 | (void) sprintf(line, "\2%s\n", RP); |
| 959 | n = strlen(line); |
| 960 | if (write(pfd, line, n) != n) |
| 961 | break; |
| 962 | if (noresponse()) |
| 963 | (void) close(pfd); |
| 964 | else |
| 965 | break; |
| 966 | } |
| 967 | if (i == 1) |
| 968 | status("waiting for %s to come up", RM); |
| 969 | sleep(i); |
| 970 | } |
| 971 | status("sending to %s", RM); |
| 972 | remote = 1; |
| 973 | } else { |
| 974 | log("no line printer device or remote machine name"); |
| 975 | exit(1); |
| 976 | } |
| 977 | /* |
| 978 | * Start up an output filter, if needed. |
| 979 | */ |
| 980 | if (OF) { |
| 981 | int p[2]; |
| 982 | char *cp; |
| 983 | |
| 984 | pipe(p); |
| 985 | if ((ofilter = dofork(DOABORT)) == 0) { /* child */ |
| 986 | dup2(p[0], 0); /* pipe is std in */ |
| 987 | dup2(pfd, 1); /* printer is std out */ |
| 988 | for (i = 3; i < NOFILE; i++) |
| 989 | (void) close(i); |
| 990 | if ((cp = rindex(OF, '/')) == NULL) |
| 991 | cp = OF; |
| 992 | else |
| 993 | cp++; |
| 994 | execl(OF, cp, width, length, 0); |
| 995 | log("can't execl output filter %s", OF); |
| 996 | exit(1); |
| 997 | } |
| 998 | (void) close(p[0]); /* close input side */ |
| 999 | ofd = p[1]; /* use pipe for output */ |
| 1000 | } else { |
| 1001 | ofd = pfd; |
| 1002 | ofilter = 0; |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | struct bauds { |
| 1007 | int baud; |
| 1008 | int speed; |
| 1009 | } bauds[] = { |
| 1010 | 50, B50, |
| 1011 | 75, B75, |
| 1012 | 110, B110, |
| 1013 | 134, B134, |
| 1014 | 150, B150, |
| 1015 | 200, B200, |
| 1016 | 300, B300, |
| 1017 | 600, B600, |
| 1018 | 1200, B1200, |
| 1019 | 1800, B1800, |
| 1020 | 2400, B2400, |
| 1021 | 4800, B4800, |
| 1022 | 9600, B9600, |
| 1023 | 19200, EXTA, |
| 1024 | 38400, EXTB, |
| 1025 | 0, 0 |
| 1026 | }; |
| 1027 | |
| 1028 | /* |
| 1029 | * setup tty lines. |
| 1030 | */ |
| 1031 | static |
| 1032 | setty() |
| 1033 | { |
| 1034 | struct sgttyb ttybuf; |
| 1035 | register struct bauds *bp; |
| 1036 | |
| 1037 | if (ioctl(pfd, TIOCEXCL, (char *)0) < 0) { |
| 1038 | log("cannot set exclusive-use"); |
| 1039 | exit(1); |
| 1040 | } |
| 1041 | if (ioctl(pfd, TIOCGETP, (char *)&ttybuf) < 0) { |
| 1042 | log("cannot get tty parameters"); |
| 1043 | exit(1); |
| 1044 | } |
| 1045 | if (BR > 0) { |
| 1046 | for (bp = bauds; bp->baud; bp++) |
| 1047 | if (BR == bp->baud) |
| 1048 | break; |
| 1049 | if (!bp->baud) { |
| 1050 | log("illegal baud rate %d", BR); |
| 1051 | exit(1); |
| 1052 | } |
| 1053 | ttybuf.sg_ispeed = ttybuf.sg_ospeed = bp->speed; |
| 1054 | } |
| 1055 | if (FC) |
| 1056 | ttybuf.sg_flags &= ~FC; |
| 1057 | if (FS) |
| 1058 | ttybuf.sg_flags |= FS; |
| 1059 | if (ioctl(pfd, TIOCSETP, (char *)&ttybuf) < 0) { |
| 1060 | log("cannot set tty parameters"); |
| 1061 | exit(1); |
| 1062 | } |
| 1063 | if (XC) { |
| 1064 | if (ioctl(pfd, TIOCLBIC, &XC) < 0) { |
| 1065 | log("cannot set local tty parameters"); |
| 1066 | exit(1); |
| 1067 | } |
| 1068 | } |
| 1069 | if (XS) { |
| 1070 | if (ioctl(pfd, TIOCLBIS, &XS) < 0) { |
| 1071 | log("cannot set local tty parameters"); |
| 1072 | exit(1); |
| 1073 | } |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | /*VARARGS1*/ |
| 1078 | static |
| 1079 | status(msg, a1, a2, a3) |
| 1080 | char *msg; |
| 1081 | { |
| 1082 | register int fd; |
| 1083 | char buf[BUFSIZ]; |
| 1084 | |
| 1085 | umask(0); |
| 1086 | if ((fd = open(ST, FWRONLY|FCREATE|FTRUNCATE|FEXLOCK, 0664)) < 0) |
| 1087 | fatal("cannot create status file"); |
| 1088 | sprintf(buf, msg, a1, a2, a3); |
| 1089 | strcat(buf, "\n"); |
| 1090 | (void) write(fd, buf, strlen(buf)); |
| 1091 | (void) close(fd); |
| 1092 | } |