2 Unix SMB/CIFS implementation.
4 Copyright (C) Karl Auer 1993-1998
6 Re-working by Martin Kiff, 1994
8 Re-written again by Andrew Tridgell
10 Modified for SVID support by Norm Jacobs, 1997
12 Modified for CUPS support by Michael Sweet, 1999
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 3 of the License, or
17 (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
24 You should have received a copy of the GNU General Public License
25 along with this program. If not, see <http://www.gnu.org/licenses/>.
29 * This module contains code to parse and cache printcap data, possibly
30 * in concert with the CUPS/SYSV/AIX-specific code found elsewhere.
32 * The way this module looks at the printcap file is very simplistic.
33 * Only the local printcap file is inspected (no searching of NIS
36 * There are assumed to be one or more printer names per record, held
37 * as a set of sub-fields separated by vertical bar symbols ('|') in the
38 * first field of the record. The field separator is assumed to be a colon
39 * ':' and the record separator a newline.
41 * Lines ending with a backspace '\' are assumed to flag that the following
42 * line is a continuation line so that a set of lines can be read as one
45 * A line stating with a hash '#' is assumed to be a comment and is ignored
46 * Comments are discarded before the record is strung together from the
47 * set of continuation lines.
49 * Opening a pipe for "lpc status" and reading that would probably
50 * be pretty effective. Code to do this already exists in the freely
51 * distributable PCNFS server code.
54 /* printcap parsing specific code moved here from printing/pcap.c */
58 #include "system/filesys.h"
59 #include "printing/pcap.h"
61 /* handle standard printcap - moved from pcap_printer_fn() */
62 bool std_pcap_cache_reload(const char *pcap_name, struct pcap_cache **_pcache)
64 TALLOC_CTX *frame = talloc_stackframe();
67 struct pcap_cache *pcache = NULL;
68 bool print_warning = false;
70 if ((pcap_file = x_fopen(pcap_name, O_RDONLY, 0)) == NULL) {
71 DEBUG(0, ("Unable to open printcap file %s for read!\n", pcap_name));
76 for (; (pcap_line = x_fgets_slash(NULL, 1024, pcap_file)) != NULL;
82 if (*pcap_line == '#' || *pcap_line == 0)
85 /* now we have a real printer line - cut at the first : */
86 if ((p = strchr_m(pcap_line, ':')) != NULL)
90 * now find the most likely printer name and comment
91 * this is pure guesswork, but it's better than nothing
93 for (p = pcap_line; p != NULL; p = q) {
94 bool has_punctuation = false;
96 if ((q = strchr_m(p, '|')) != NULL)
99 has_punctuation = (strchr_m(p, ' ') ||
108 if (name == NULL && !has_punctuation) {
109 name = talloc_strdup(frame, p);
113 if (has_punctuation) {
114 comment = talloc_strdup(frame, p);
122 if (!print_warning && strlen(name) > MAXPRINTERLEN) {
123 print_warning = true;
126 ok = pcap_cache_add_specific(&pcache,
132 pcap_cache_destroy_specific(&pcache);
138 TALLOC_FREE(comment);
142 DBG_WARNING("WARNING: You have some printer names that are "
143 "longer than %u characters. These may not be "
144 "accessible to some older clients!\n",
145 (unsigned int)MAXPRINTERLEN);