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