68444b9f0c
text data bss dec hex filename
392 0 0 392 188 lpq.o
1378 0 0 1378 562 lpr.o
142 0 0 142 8e parse_prt.o
109 lines
2.2 KiB
C
109 lines
2.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Copyright 2008 Walter Harms (WHarms@bfs.de)
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*
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* Licensed under the GPL v2, see the file LICENSE in this tarball.
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*/
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#include "libbb.h"
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#include "lpr.h"
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/*
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this is a *very* resticted form of lpq
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since we do not read /etc/printcap (and never will)
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we can only do things rfc1179 allows:
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- show print jobs for a given queue long/short form
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- remove a job from a given queue
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-P <queue>
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-s short
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-d delete job
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-f force any waiting job to be printed
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*/
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enum {
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LPQ_SHORT = 1 << 0,
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LPQ_DELETE = 1 << 1,
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LPQ_FORCE = 1 << 2,
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LPQ_P = 1 << 3,
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LPQ_t = 1 << 4,
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};
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/*
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print everthing that comes
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*/
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static void get_answer(int sockfd)
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{
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char buf[80];
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int n;
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buf[0] = '\n';
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while (1) {
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n = safe_read(sockfd, buf, sizeof(buf));
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if (n <= 0)
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break;
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full_write(STDOUT_FILENO, buf, n);
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buf[0] = buf[n-1]; /* last written char */
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}
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/* Don't leave last output line unterminated */
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if (buf[0] != '\n')
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full_write(STDOUT_FILENO, "\n", 1);
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}
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/*
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is this too simple ?
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should we support more ENV ?
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PRINTER, LPDEST, NPRINTER, NGPRINTER
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*/
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int lpq_main(int argc, char *argv[]) MAIN_EXTERNALLY_VISIBLE;
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int lpq_main(int argc, char *argv[])
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{
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struct netprint netprint;
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const char *netopt;
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const char *delopt = "0";
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int sockfd = sockfd; /* for compiler */
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unsigned opt;
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int delay; /* delay in [s] */
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netopt = NULL;
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opt = getopt32(argv, "sdfP:t:", &netopt, &delopt);
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argv += optind;
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delay = xatoi_u(delopt);
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parse_prt(netopt, &netprint);
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/* do connect */
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if (opt & (LPQ_FORCE|LPQ_DELETE))
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sockfd = xconnect_stream(netprint.lsa);
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/* force printing of every job still in queue */
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if (opt & LPQ_FORCE) {
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fdprintf(sockfd, "\x1" "%s", netprint.queue);
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get_answer(sockfd);
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return EXIT_SUCCESS;
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}
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/* delete job (better a list of jobs). username is now LOGNAME */
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if (opt & LPQ_DELETE) {
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while (*argv) {
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fdprintf(sockfd, "\x5" "%s %s %s",
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netprint.queue,
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getenv("LOGNAME"), /* FIXME - may be NULL? */
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*argv);
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get_answer(sockfd);
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argv++;
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}
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return EXIT_SUCCESS;
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}
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do {
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sockfd = xconnect_stream(netprint.lsa);
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fdprintf(sockfd, "%c%s\n", (opt & LPQ_SHORT) ? 3 : 4,
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netprint.queue);
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get_answer(sockfd);
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close(sockfd);
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sleep(delay);
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} while (delay != 0);
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return EXIT_SUCCESS;
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}
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