1 files changed, 108 insertions, 0 deletions
diff --git a/printutils/lpq.c b/printutils/lpq.c
new file mode 100644
index 0000000..ce9a10c
--- /dev/null
+++ b/printutils/lpq.c
@@ -0,0 +1,108 @@
+/* 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;
+}