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.
53 * Modified to call SVID/XPG4 support if printcap name is set to "lpstat"
54 * in smb.conf under Solaris.
56 * Modified to call CUPS support if printcap name is set to "cups"
59 * Modified to call iPrint support if printcap name is set to "iprint"
66 typedef struct pcap_cache {
69 struct pcap_cache *next;
72 static pcap_cache_t *pcap_cache = NULL;
74 bool pcap_cache_add(const char *name, const char *comment)
78 if (name == NULL || ((p = SMB_MALLOC_P(pcap_cache_t)) == NULL))
81 p->name = SMB_STRDUP(name);
82 p->comment = (comment && *comment) ? SMB_STRDUP(comment) : NULL;
90 static void pcap_cache_destroy(pcap_cache_t *cache)
92 pcap_cache_t *p, *next;
94 for (p = cache; p != NULL; p = next) {
98 SAFE_FREE(p->comment);
103 bool pcap_cache_loaded(void)
105 return (pcap_cache != NULL);
108 void pcap_cache_reload(void)
110 const char *pcap_name = lp_printcapname();
111 bool pcap_reloaded = False;
112 pcap_cache_t *tmp_cache = NULL;
116 DEBUG(3, ("reloading printcap cache\n"));
118 /* only go looking if no printcap name supplied */
119 if (pcap_name == NULL || *pcap_name == 0) {
120 DEBUG(0, ("No printcap file name configured!\n"));
124 tmp_cache = pcap_cache;
128 if (strequal(pcap_name, "cups")) {
129 pcap_reloaded = cups_cache_reload();
135 if (strequal(pcap_name, "iprint")) {
136 pcap_reloaded = iprint_cache_reload();
141 #if defined(SYSV) || defined(HPUX)
142 if (strequal(pcap_name, "lpstat")) {
143 pcap_reloaded = sysv_cache_reload();
149 if (strstr_m(pcap_name, "/qconfig") != NULL) {
150 pcap_reloaded = aix_cache_reload();
155 /* handle standard printcap - moved from pcap_printer_fn() */
157 if ((pcap_file = x_fopen(pcap_name, O_RDONLY, 0)) == NULL) {
158 DEBUG(0, ("Unable to open printcap file %s for read!\n", pcap_name));
162 for (; (pcap_line = fgets_slash(NULL, sizeof(pstring), pcap_file)) != NULL; safe_free(pcap_line)) {
163 pstring name, comment;
166 if (*pcap_line == '#' || *pcap_line == 0)
169 /* now we have a real printer line - cut at the first : */
170 if ((p = strchr_m(pcap_line, ':')) != NULL)
174 * now find the most likely printer name and comment
175 * this is pure guesswork, but it's better than nothing
177 for (*name = *comment = 0, p = pcap_line; p != NULL; p = q) {
178 bool has_punctuation;
180 if ((q = strchr_m(p, '|')) != NULL)
183 has_punctuation = (strchr_m(p, ' ') ||
188 if (strlen(p) > strlen(comment) && has_punctuation) {
193 if (strlen(p) <= MAXPRINTERLEN &&
194 strlen(p) > strlen(name) && !has_punctuation) {
196 pstrcpy(comment, name);
202 if (!strchr_m(comment, ' ') &&
203 strlen(p) > strlen(comment)) {
210 name[MAXPRINTERLEN] = 0;
212 if (*name && !pcap_cache_add(name, comment)) {
219 pcap_reloaded = True;
222 DEBUG(3, ("reload status: %s\n", (pcap_reloaded) ? "ok" : "error"));
225 pcap_cache_destroy(tmp_cache);
227 pcap_cache_destroy(pcap_cache);
228 pcap_cache = tmp_cache;
235 bool pcap_printername_ok(const char *printername)
239 for (p = pcap_cache; p != NULL; p = p->next)
240 if (strequal(p->name, printername))
246 /***************************************************************************
247 run a function on each printer name in the printcap file. The function is
248 passed the primary name and the comment (if possible). Note the fn() takes
249 strings in DOS codepage. This means the xxx_printer_fn() calls must be fixed
250 to return DOS codepage. FIXME !! JRA.
252 XXX: I'm not sure if this comment still applies.. Anyone? -Rob
253 ***************************************************************************/
254 void pcap_printer_fn(void (*fn)(char *, char *))
258 for (p = pcap_cache; p != NULL; p = p->next)
259 fn(p->name, p->comment);