/release/src/router/samba3/source/printing/pcap.c
C | 263 lines | 140 code | 47 blank | 76 comment | 47 complexity | 4f022072ce0f9a22e3f45e5b59a24586 MD5 | raw file
- /*
- 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;
- }