/* 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 3 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, see <http://www.gnu.org/licenses/>. */ /* * 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. */ /* printcap parsing specific code moved here from printing/pcap.c */ #include "includes.h" #include "printing/pcap.h" /* handle standard printcap - moved from pcap_printer_fn() */ bool std_pcap_cache_reload(const char *pcap_name) { XFILE *pcap_file; char *pcap_line; if ((pcap_file = x_fopen(pcap_name, O_RDONLY, 0)) == NULL) { DEBUG(0, ("Unable to open printcap file %s for read!\n", pcap_name)); return false; } for (; (pcap_line = fgets_slash(NULL, 1024, pcap_file)) != NULL; free(pcap_line)) { char name[MAXPRINTERLEN+1]; char comment[62]; 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) { strlcpy(comment, p, sizeof(comment)); continue; } if (strlen(p) <= MAXPRINTERLEN && strlen(p) > strlen(name) && !has_punctuation) { if (!*comment) { strlcpy(comment, name, sizeof(comment)); } strlcpy(name, p, sizeof(name)); continue; } if (!strchr_m(comment, ' ') && strlen(p) > strlen(comment)) { strlcpy(comment, p, sizeof(comment)); continue; } } comment[60] = 0; name[MAXPRINTERLEN] = 0; if (*name && !pcap_cache_add(name, comment)) { x_fclose(pcap_file); return false; } } x_fclose(pcap_file); return true; }