Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 : printcap parsing
4 : Copyright (C) Karl Auer 1993-1998
5 :
6 : Re-working by Martin Kiff, 1994
7 :
8 : Re-written again by Andrew Tridgell
9 :
10 : Modified for SVID support by Norm Jacobs, 1997
11 :
12 : Modified for CUPS support by Michael Sweet, 1999
13 :
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.
18 :
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.
23 :
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/>.
26 : */
27 :
28 : /*
29 : * Modified to call SVID/XPG4 support if printcap name is set to "lpstat"
30 : * in smb.conf under Solaris.
31 : *
32 : * Modified to call CUPS support if printcap name is set to "cups"
33 : * in smb.conf.
34 : *
35 : * Modified to call iPrint support if printcap name is set to "iprint"
36 : * in smb.conf.
37 : */
38 :
39 : #include "includes.h"
40 : #include "printing/pcap.h"
41 : #include "printer_list.h"
42 :
43 : struct pcap_cache {
44 : char *name;
45 : char *comment;
46 : char *location;
47 : struct pcap_cache *next;
48 : };
49 :
50 0 : bool pcap_cache_add_specific(struct pcap_cache **ppcache, const char *name, const char *comment, const char *location)
51 : {
52 0 : struct pcap_cache *p;
53 :
54 0 : if (name == NULL || ((p = SMB_MALLOC_P(struct pcap_cache)) == NULL))
55 0 : return false;
56 :
57 0 : p->name = SMB_STRDUP(name);
58 0 : p->comment = (comment && *comment) ? SMB_STRDUP(comment) : NULL;
59 0 : p->location = (location && *location) ? SMB_STRDUP(location) : NULL;
60 :
61 0 : DEBUG(11,("pcap_cache_add_specific: Adding name %s info %s, location: %s\n",
62 : p->name, p->comment ? p->comment : "",
63 : p->location ? p->location : ""));
64 :
65 0 : p->next = *ppcache;
66 0 : *ppcache = p;
67 :
68 0 : return true;
69 : }
70 :
71 120 : void pcap_cache_destroy_specific(struct pcap_cache **pp_cache)
72 : {
73 0 : struct pcap_cache *p, *next;
74 :
75 120 : for (p = *pp_cache; p != NULL; p = next) {
76 0 : next = p->next;
77 :
78 0 : SAFE_FREE(p->name);
79 0 : SAFE_FREE(p->comment);
80 0 : SAFE_FREE(p->location);
81 0 : SAFE_FREE(p);
82 : }
83 120 : *pp_cache = NULL;
84 120 : }
85 :
86 120 : bool pcap_cache_replace(const struct pcap_cache *pcache)
87 : {
88 0 : const struct pcap_cache *p;
89 0 : NTSTATUS status;
90 120 : time_t t = time_mono(NULL);
91 :
92 120 : status = printer_list_mark_reload();
93 120 : if (!NT_STATUS_IS_OK(status)) {
94 0 : DEBUG(0, ("Failed to mark printer list for reload!\n"));
95 0 : return false;
96 : }
97 :
98 120 : for (p = pcache; p; p = p->next) {
99 0 : status = printer_list_set_printer(talloc_tos(), p->name,
100 0 : p->comment, p->location, t);
101 0 : if (!NT_STATUS_IS_OK(status)) {
102 0 : return false;
103 : }
104 : }
105 :
106 120 : status = printer_list_clean_old();
107 120 : if (!NT_STATUS_IS_OK(status)) {
108 0 : DEBUG(0, ("Failed to cleanup printer list!\n"));
109 0 : return false;
110 : }
111 :
112 120 : return true;
113 : }
114 :
115 120 : void pcap_cache_reload(struct tevent_context *ev,
116 : struct messaging_context *msg_ctx,
117 : void (*post_cache_fill_fn)(struct tevent_context *,
118 : struct messaging_context *))
119 : {
120 120 : const char *pcap_name = lp_printcapname();
121 120 : bool pcap_reloaded = False;
122 120 : bool post_cache_fill_fn_handled = false;
123 120 : struct pcap_cache *pcache = NULL;
124 :
125 120 : DEBUG(3, ("reloading printcap cache\n"));
126 :
127 120 : if (!lp_load_printers()) {
128 0 : DBG_NOTICE("skipping reload - load printers disabled\n");
129 0 : return;
130 : }
131 :
132 : /* only go looking if a printcap name is supplied */
133 120 : if (pcap_name == NULL || *pcap_name == 0) {
134 0 : DEBUG(0, ("No printcap file name configured!\n"));
135 0 : return;
136 : }
137 :
138 : #ifdef HAVE_CUPS
139 120 : if (strequal(pcap_name, "cups")) {
140 0 : pcap_reloaded = cups_cache_reload(ev, msg_ctx,
141 : post_cache_fill_fn);
142 : /*
143 : * cups_cache_reload() is async and calls post_cache_fill_fn()
144 : * on successful completion
145 : */
146 0 : post_cache_fill_fn_handled = true;
147 0 : goto done;
148 : }
149 : #endif
150 :
151 : #ifdef HAVE_IPRINT
152 120 : if (strequal(pcap_name, "iprint")) {
153 0 : pcap_reloaded = iprint_cache_reload(&pcache);
154 0 : goto done;
155 : }
156 : #endif
157 :
158 : #if defined(SYSV) || defined(HPUX)
159 : if (strequal(pcap_name, "lpstat")) {
160 : pcap_reloaded = sysv_cache_reload(&pcache);
161 : goto done;
162 : }
163 : #endif
164 :
165 : #ifdef AIX
166 : if (strstr_m(pcap_name, "/qconfig") != NULL) {
167 : pcap_reloaded = aix_cache_reload(&pcache);
168 : goto done;
169 : }
170 : #endif
171 :
172 120 : pcap_reloaded = std_pcap_cache_reload(pcap_name, &pcache);
173 :
174 : /* Fix silly compiler warning about done not being used if none of the above
175 : * ifdefs are used */
176 : #if defined(HAVE_CUPS) || defined(HAVE_IPRINT) || defined(SYSV) || defined(HPUX) || defined(AIX)
177 120 : done:
178 : #endif
179 120 : DEBUG(3, ("reload status: %s\n", (pcap_reloaded) ? "ok" : "error"));
180 :
181 120 : if ((pcap_reloaded) && (post_cache_fill_fn_handled == false)) {
182 : /* cleanup old entries only if the operation was successful,
183 : * otherwise keep around the old entries until we can
184 : * successfully reload */
185 :
186 120 : if (!pcap_cache_replace(pcache)) {
187 0 : DEBUG(0, ("Failed to replace printer list!\n"));
188 : }
189 :
190 120 : if (post_cache_fill_fn != NULL) {
191 120 : post_cache_fill_fn(ev, msg_ctx);
192 : }
193 : }
194 120 : pcap_cache_destroy_specific(&pcache);
195 :
196 120 : return;
197 : }
198 :
199 : /***************************************************************************
200 : run a function on each printer name in the printcap file.
201 : ***************************************************************************/
202 :
203 0 : void pcap_printer_fn_specific(const struct pcap_cache *pc,
204 : void (*fn)(const char *, const char *, const char *, void *),
205 : void *pdata)
206 : {
207 0 : const struct pcap_cache *p;
208 :
209 0 : for (p = pc; p != NULL; p = p->next)
210 0 : fn(p->name, p->comment, p->location, pdata);
211 :
212 0 : return;
213 : }
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