2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
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41 #include "lp.cdefs.h" /* A cross-platform version of <sys/cdefs.h> */
48 #include <sys/param.h> /* required for lp.h, but not used here */
49 #include <sys/dirent.h> /* ditto */
52 #include "pathnames.h"
55 * Routines and data used in processing the printcap file.
57 static char *printcapdb[] = { __DECONST(char *, _PATH_PRINTCAP), NULL };
59 static char *capdb_canonical_name(const char *_bp);
60 static int capdb_getaltlog(char *_bp, const char *_shrt,
62 static int capdb_getaltnum(char *_bp, const char *_shrt,
63 const char *_lng, long _dflt, long *_result);
64 static int capdb_getaltstr(char *_bp, const char *_shrt,
65 const char *lng, const char *_dflt, char **_result);
66 static int getprintcap_int(char *_bp, struct printer *_pp);
69 * Change the name of the printcap file. Used by chkprintcap(8),
70 * but could be used by other members of the suite with appropriate
74 setprintcap(char *newfile)
76 printcapdb[0] = newfile;
80 * Read the printcap database for printer `printer' into the
81 * struct printer pointed by `pp'. Return values are as for
82 * cgetent(3): -1 means we could not find what we wanted, -2
83 * means a system error occurred (and errno is set), -3 if a
84 * reference (`tc=') loop was detected, and 0 means success.
86 * Copied from lpr; should add additional capabilities as they
87 * are required by the other programs in the suite so that
88 * printcap-reading is consistent across the entire family.
91 getprintcap(const char *printer, struct printer *pp)
96 if ((status = cgetent(&bp, printcapdb, printer)) < 0)
98 status = getprintcap_int(bp, pp);
104 * Map the status values returned by cgetfirst/cgetnext into those
105 * used by cgetent, returning truth if there are more records to
106 * examine. This points out what is arguably a bug in the cget*
107 * interface (or at least a nasty wart).
110 firstnextmap(int *status)
133 * Scan through the database of printers using cgetfirst/cgetnext.
134 * Return false of error or end-of-database; else true.
137 firstprinter(struct printer *pp, int *error)
143 status = cgetfirst(&bp, printcapdb);
144 if (firstnextmap(&status) == 0) {
151 status = getprintcap_int(bp, pp);
159 nextprinter(struct printer *pp, int *error)
165 status = cgetnext(&bp, printcapdb);
166 if (firstnextmap(&status) == 0) {
173 status = getprintcap_int(bp, pp);
187 * This must match the order of declaration of enum filter in lp.h.
189 static const char *filters[] = {
190 "cf", "df", "gf", "if", "nf", "of", "rf", "tf", "vf"
193 static const char *longfilters[] = {
194 "filt.cifplot", "filt.dvi", "filt.plot", "filt.input", "filt.ditroff",
195 "filt.output", "filt.fortran", "filt.troff", "filt.raster"
199 * Internal routine for both getprintcap() and nextprinter().
200 * Actually parse the printcap entry using cget* functions.
201 * Also attempt to figure out the canonical name of the printer
202 * and store a malloced copy of it in pp->printer.
205 getprintcap_int(char *bp, struct printer *pp)
207 enum lpd_filters filt;
211 if ((pp->printer = capdb_canonical_name(bp)) == NULL)
212 return PCAPERR_OSERR;
214 #define CHK(x) do {if ((x) == PCAPERR_OSERR) return PCAPERR_OSERR;}while(0)
215 CHK(capdb_getaltstr(bp, "af", "acct.file", 0, &pp->acct_file));
216 CHK(capdb_getaltnum(bp, "br", "tty.rate", 0, &pp->baud_rate));
217 CHK(capdb_getaltnum(bp, "ct", "remote.timeout", DEFTIMEOUT,
219 CHK(capdb_getaltnum(bp, "du", "daemon.user", DEFUID,
221 CHK(capdb_getaltstr(bp, "ff", "job.formfeed", DEFFF, &pp->form_feed));
222 CHK(capdb_getaltstr(bp, "lf", "spool.log", _PATH_CONSOLE,
224 CHK(capdb_getaltstr(bp, "lo", "spool.lock", DEFLOCK, &pp->lock_file));
225 CHK(capdb_getaltstr(bp, "lp", "tty.device", _PATH_DEFDEVLP, &pp->lp));
226 CHK(capdb_getaltnum(bp, "mc", "max.copies", DEFMAXCOPIES,
228 CHK(capdb_getaltstr(bp, "ms", "tty.mode", 0, &pp->mode_set));
229 CHK(capdb_getaltnum(bp, "mx", "max.blocks", DEFMX, &pp->max_blocks));
230 CHK(capdb_getaltnum(bp, "pc", "acct.price", 0, &pp->price100));
231 CHK(capdb_getaltnum(bp, "pl", "page.length", DEFLENGTH,
233 CHK(capdb_getaltnum(bp, "pw", "page.width", DEFWIDTH,
235 CHK(capdb_getaltnum(bp, "px", "page.pwidth", 0, &pp->page_pwidth));
236 CHK(capdb_getaltnum(bp, "py", "page.plength", 0, &pp->page_plength));
237 CHK(capdb_getaltstr(bp, "rg", "daemon.restrictgrp", 0,
239 CHK(capdb_getaltstr(bp, "rm", "remote.host", 0, &pp->remote_host));
240 CHK(capdb_getaltstr(bp, "rp", "remote.queue", DEFLP,
242 CHK(capdb_getaltstr(bp, "sd", "spool.dir", _PATH_DEFSPOOL,
244 CHK(capdb_getaltstr(bp, "sr", "stat.recv", 0, &pp->stat_recv));
245 CHK(capdb_getaltstr(bp, "ss", "stat.send", 0, &pp->stat_send));
246 CHK(capdb_getaltstr(bp, "st", "spool.status", DEFSTAT,
248 CHK(capdb_getaltstr(bp, "tr", "job.trailer", 0, &pp->trailer));
250 pp->resend_copies = capdb_getaltlog(bp, "rc", "remote.resend_copies");
251 pp->restricted = capdb_getaltlog(bp, "rs", "daemon.restricted");
252 pp->short_banner = capdb_getaltlog(bp, "sb", "banner.short");
253 pp->no_copies = capdb_getaltlog(bp, "sc", "job.no_copies");
254 pp->no_formfeed = capdb_getaltlog(bp, "sf", "job.no_formfeed");
255 pp->no_header = capdb_getaltlog(bp, "sh", "banner.disable");
256 pp->header_last = capdb_getaltlog(bp, "hl", "banner.last");
257 pp->rw = capdb_getaltlog(bp, "rw", "tty.rw");
258 pp->tof = !capdb_getaltlog(bp, "fo", "job.topofform");
261 * Decide if the remote printer name matches the local printer name.
262 * If no name is given then we assume they mean them to match.
263 * If a name is given see if the rp_name is one of the names for
266 pp->rp_matches_local = 1;
267 CHK((error = capdb_getaltstr(bp, "rp", "remote.queue", 0, &rp_name)));
268 if (error != PCAPERR_NOTFOUND && rp_name != NULL) {
269 if (cgetmatch(bp,rp_name) != 0)
270 pp->rp_matches_local = 0;
277 for (filt = 0; filt < LPF_COUNT; filt++) {
278 CHK(capdb_getaltstr(bp, filters[filt], longfilters[filt], 0,
279 &pp->filters[filt]));
286 * Decode the error codes returned by cgetent() using the names we
287 * made up for them from "lp.h".
288 * This would have been much better done with Common Error, >sigh<.
289 * Perhaps this can be fixed in the next incarnation of cget*.
296 return "unresolved tc= expansion";
297 case PCAPERR_SUCCESS:
299 case PCAPERR_NOTFOUND:
300 return "printer not found";
302 return strerror(errno);
304 return "loop detected in tc= expansion";
306 return "unknown printcap error";
311 * Initialize a `struct printer' to contain values harmless to
312 * the other routines in liblpr.
315 init_printer(struct printer *pp)
317 static struct printer zero;
322 * Free the dynamically-allocated strings in a `struct printer'.
326 free_printer(struct printer *pp)
328 enum lpd_filters filt;
329 #define cfree(x) do { if (x) free(x); } while(0)
331 cfree(pp->acct_file);
332 for (filt = 0; filt < LPF_COUNT; filt++)
333 cfree(pp->filters[filt]);
334 cfree(pp->form_feed);
336 cfree(pp->lock_file);
338 cfree(pp->restrict_grp);
339 cfree(pp->remote_host);
340 cfree(pp->remote_queue);
341 cfree(pp->spool_dir);
342 cfree(pp->stat_recv);
343 cfree(pp->stat_send);
344 cfree(pp->status_file);
353 * The following routines are part of what would be a sensible library
354 * interface to capability databases. Maybe someday this will become
359 * It provides similar functionality to cgetstr(),
360 * except that it provides for both a long and a short
361 * capability name and allows for a default to be specified.
364 capdb_getaltstr(char *bp, const char *shrt, const char *lng,
365 const char *dflt, char **result)
369 status = cgetstr(bp, lng, result);
370 if (status >= 0 || status == PCAPERR_OSERR)
372 status = cgetstr(bp, shrt, result);
373 if (status >= 0 || status == PCAPERR_OSERR)
376 *result = strdup(dflt);
378 return PCAPERR_OSERR;
379 return strlen(*result);
381 return PCAPERR_NOTFOUND;
385 * The same, only for integers.
388 capdb_getaltnum(char *bp, const char *shrt, const char *lng, long dflt,
393 status = cgetnum(bp, lng, result);
396 status = cgetnum(bp, shrt, result);
404 * Likewise for logical values. There's no need for a default parameter
405 * because the default is always false.
408 capdb_getaltlog(char *bp, const char *shrt, const char *lng)
410 if (cgetcap(bp, lng, ':'))
412 if (cgetcap(bp, shrt, ':'))
418 * Also should be a part of a better cget* library.
419 * Given a capdb entry, attempt to figure out what its canonical name
420 * is, and return a malloced copy of it. The canonical name is
421 * considered to be the first one listed.
424 capdb_canonical_name(const char *bp)
429 nameend = strpbrk(bp, "|:");
432 if ((retval = malloc(nameend - bp + 1)) != NULL) {
434 strncat(retval, bp, nameend - bp);