--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+ printcap parsing
+ Copyright (C) Karl Auer 1993-1998
+
+ Re-working by Martin Kiff, 1994
+
+ Re-written again by Andrew Tridgell
+
+ Modified for SVID support by Norm Jacobs, 1997
+
+ Modified for CUPS support by Michael Sweet, 1999
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/*
+ * This module contains code to parse and cache printcap data, possibly
+ * in concert with the CUPS/SYSV/AIX-specific code found elsewhere.
+ *
+ * The way this module looks at the printcap file is very simplistic.
+ * Only the local printcap file is inspected (no searching of NIS
+ * databases etc).
+ *
+ * There are assumed to be one or more printer names per record, held
+ * as a set of sub-fields separated by vertical bar symbols ('|') in the
+ * first field of the record. The field separator is assumed to be a colon
+ * ':' and the record separator a newline.
+ *
+ * Lines ending with a backspace '\' are assumed to flag that the following
+ * line is a continuation line so that a set of lines can be read as one
+ * printcap entry.
+ *
+ * A line stating with a hash '#' is assumed to be a comment and is ignored
+ * Comments are discarded before the record is strung together from the
+ * set of continuation lines.
+ *
+ * Opening a pipe for "lpc status" and reading that would probably
+ * be pretty effective. Code to do this already exists in the freely
+ * distributable PCNFS server code.
+ *
+ * Modified to call SVID/XPG4 support if printcap name is set to "lpstat"
+ * in smb.conf under Solaris.
+ *
+ * Modified to call CUPS support if printcap name is set to "cups"
+ * in smb.conf.
+ *
+ * Modified to call iPrint support if printcap name is set to "iprint"
+ * in smb.conf.
+ */
+
+#include "includes.h"
+
+
+typedef struct pcap_cache {
+ char *name;
+ char *comment;
+ struct pcap_cache *next;
+} pcap_cache_t;
+
+static pcap_cache_t *pcap_cache = NULL;
+
+BOOL pcap_cache_add(const char *name, const char *comment)
+{
+ pcap_cache_t *p;
+
+ if (name == NULL || ((p = SMB_MALLOC_P(pcap_cache_t)) == NULL))
+ return False;
+
+ p->name = SMB_STRDUP(name);
+ p->comment = (comment && *comment) ? SMB_STRDUP(comment) : NULL;
+
+ p->next = pcap_cache;
+ pcap_cache = p;
+
+ return True;
+}
+
+static void pcap_cache_destroy(pcap_cache_t *cache)
+{
+ pcap_cache_t *p, *next;
+
+ for (p = cache; p != NULL; p = next) {
+ next = p->next;
+
+ SAFE_FREE(p->name);
+ SAFE_FREE(p->comment);
+ SAFE_FREE(p);
+ }
+}
+
+BOOL pcap_cache_loaded(void)
+{
+ return (pcap_cache != NULL);
+}
+
+void pcap_cache_reload(void)
+{
+ const char *pcap_name = lp_printcapname();
+ BOOL pcap_reloaded = False;
+ pcap_cache_t *tmp_cache = NULL;
+ XFILE *pcap_file;
+ char *pcap_line;
+
+ DEBUG(3, ("reloading printcap cache\n"));
+
+ /* only go looking if no printcap name supplied */
+ if (pcap_name == NULL || *pcap_name == 0) {
+ DEBUG(0, ("No printcap file name configured!\n"));
+ return;
+ }
+
+ tmp_cache = pcap_cache;
+ pcap_cache = NULL;
+
+#ifdef HAVE_CUPS
+ if (strequal(pcap_name, "cups")) {
+ pcap_reloaded = cups_cache_reload();
+ goto done;
+ }
+#endif
+
+#ifdef HAVE_IPRINT
+ if (strequal(pcap_name, "iprint")) {
+ pcap_reloaded = iprint_cache_reload();
+ goto done;
+ }
+#endif
+
+#if defined(SYSV) || defined(HPUX)
+ if (strequal(pcap_name, "lpstat")) {
+ pcap_reloaded = sysv_cache_reload();
+ goto done;
+ }
+#endif
+
+#ifdef AIX
+ if (strstr_m(pcap_name, "/qconfig") != NULL) {
+ pcap_reloaded = aix_cache_reload();
+ goto done;
+ }
+#endif
+
+ /* handle standard printcap - moved from pcap_printer_fn() */
+
+ if ((pcap_file = x_fopen(pcap_name, O_RDONLY, 0)) == NULL) {
+ DEBUG(0, ("Unable to open printcap file %s for read!\n", pcap_name));
+ goto done;
+ }
+
+ for (; (pcap_line = fgets_slash(NULL, sizeof(pstring), pcap_file)) != NULL; safe_free(pcap_line)) {
+ pstring name, comment;
+ char *p, *q;
+
+ if (*pcap_line == '#' || *pcap_line == 0)
+ continue;
+
+ /* now we have a real printer line - cut at the first : */
+ if ((p = strchr_m(pcap_line, ':')) != NULL)
+ *p = 0;
+
+ /*
+ * now find the most likely printer name and comment
+ * this is pure guesswork, but it's better than nothing
+ */
+ for (*name = *comment = 0, p = pcap_line; p != NULL; p = q) {
+ BOOL has_punctuation;
+
+ if ((q = strchr_m(p, '|')) != NULL)
+ *q++ = 0;
+
+ has_punctuation = (strchr_m(p, ' ') ||
+ strchr_m(p, '\t') ||
+ strchr_m(p, '(') ||
+ strchr_m(p, ')'));
+
+ if (strlen(p) > strlen(comment) && has_punctuation) {
+ pstrcpy(comment, p);
+ continue;
+ }
+
+ if (strlen(p) <= MAXPRINTERLEN &&
+ strlen(p) > strlen(name) && !has_punctuation) {
+ if (!*comment)
+ pstrcpy(comment, name);
+
+ pstrcpy(name, p);
+ continue;
+ }
+
+ if (!strchr_m(comment, ' ') &&
+ strlen(p) > strlen(comment)) {
+ pstrcpy(comment, p);
+ continue;
+ }
+ }
+
+ comment[60] = 0;
+ name[MAXPRINTERLEN] = 0;
+
+ if (*name && !pcap_cache_add(name, comment)) {
+ x_fclose(pcap_file);
+ goto done;
+ }
+ }
+
+ x_fclose(pcap_file);
+ pcap_reloaded = True;
+
+done:
+ DEBUG(3, ("reload status: %s\n", (pcap_reloaded) ? "ok" : "error"));
+
+ if (pcap_reloaded)
+ pcap_cache_destroy(tmp_cache);
+ else {
+ pcap_cache_destroy(pcap_cache);
+ pcap_cache = tmp_cache;
+ }
+
+ return;
+}
+
+
+BOOL pcap_printername_ok(const char *printername)
+{
+ pcap_cache_t *p;
+
+ for (p = pcap_cache; p != NULL; p = p->next)
+ if (strequal(p->name, printername))
+ return True;
+
+ return False;
+}
+
+/***************************************************************************
+run a function on each printer name in the printcap file. The function is
+passed the primary name and the comment (if possible). Note the fn() takes
+strings in DOS codepage. This means the xxx_printer_fn() calls must be fixed
+to return DOS codepage. FIXME !! JRA.
+
+XXX: I'm not sure if this comment still applies.. Anyone? -Rob
+***************************************************************************/
+void pcap_printer_fn(void (*fn)(char *, char *))
+{
+ pcap_cache_t *p;
+
+ for (p = pcap_cache; p != NULL; p = p->next)
+ fn(p->name, p->comment);
+
+ return;
+}
projects / samba / blobdiff