New osmo-gsmtap-logsend utility
This utility can be used to "pipe" stdin or some file as log lines
via GSMTAP logging.
Change-Id: Ida96e87d84e0c349c5069edc67fec1c3cf19d1ab
diff --git a/utils/Makefile.am b/utils/Makefile.am
index 8937ad9..3ec71ea 100644
--- a/utils/Makefile.am
+++ b/utils/Makefile.am
@@ -8,7 +8,7 @@
if ENABLE_UTILITIES
EXTRA_DIST = conv_gen.py conv_codes_gsm.py
-bin_PROGRAMS += osmo-arfcn osmo-auc-gen osmo-config-merge osmo-aka-verify
+bin_PROGRAMS += osmo-arfcn osmo-auc-gen osmo-config-merge osmo-aka-verify osmo-gsmtap-logsend
osmo_arfcn_SOURCES = osmo-arfcn.c
@@ -16,6 +16,8 @@
osmo_aka_verify_SOURCES = osmo-aka-verify.c
+osmo_gsmtap_logsend_SOURCES = gsmtap-logsend.c
+
osmo_config_merge_SOURCES = osmo-config-merge.c
osmo_config_merge_LDADD = $(LDADD) $(TALLOC_LIBS)
diff --git a/utils/gsmtap-logsend.c b/utils/gsmtap-logsend.c
new file mode 100644
index 0000000..97a838b
--- /dev/null
+++ b/utils/gsmtap-logsend.c
@@ -0,0 +1,139 @@
+/* Small program to read an input file / stdin and send each line via GSMTAP logging */
+/* (C) 2023 by Harald Welte <laforge@osmocom.org>
+ *
+ * All Rights Reserved
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <sys/uio.h>
+#include <getopt.h>
+
+#include <osmocom/core/byteswap.h>
+#include <osmocom/core/logging.h>
+#include <osmocom/core/timer.h>
+#include <osmocom/core/gsmtap.h>
+#include <osmocom/core/gsmtap_util.h>
+
+static char *proc_name = "gsmtap-logsend";
+static char *subsys_name = "unknown";
+static char *dest_host = "localhost";
+static int dest_port = GSMTAP_UDP_PORT;
+
+static void help(void)
+{
+ printf("osmo-gsmtap-logsend Usage:\n"
+ "\t[ -r DESTADDR ] [ -p PORTNR ] [ -n PROC_NAME ] [ -s SUBSYS ] [ INFILE ]\n"
+ "\n"
+ " -a --remote-address HOSTNAME Destination IP destination address (default: localhost)\n"
+ " -p --remote-port PORTNR Destination UDP Port number (default: 4729)\n"
+ " -n --process-name PROC_NAME Process name to include in GSMTAP LOG header\n"
+ " -s --subsys-name SUBSYS Subsystem name to include in GSMTAP LOG header\n"
+ " -h --help This help message\n"
+ );
+}
+
+int main(int argc, char **argv)
+{
+ char buf[1024];
+ int gsmtap_fd;
+ FILE *infile;
+ char *line;
+ int rc;
+
+ while (1) {
+ static const struct option long_options[] = {
+ { "remote-address", 1, 0, 'a' },
+ { "remote-port", 1, 0, 'p' },
+ { "process-name", 1, 0, 'n' },
+ { "subsys-name", 1, 0, 's' },
+ { "help", 0, 0, 'h' },
+ { 0, 0, 0, 0 }
+ };
+ int c, option_index;
+
+ c = getopt_long(argc, argv, "a:p:n:s:h", long_options, &option_index);
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'a':
+ dest_host = optarg;
+ break;
+ case 'p':
+ dest_port = atoi(optarg);
+ break;
+ case 'n':
+ proc_name = optarg;
+ break;
+ case 's':
+ subsys_name = optarg;
+ break;
+ case 'h':
+ help();
+ exit(0);
+ break;
+ default:
+ help();
+ exit(1);
+ }
+ }
+
+ if (argc <= optind) {
+ infile = stdin;
+ } else {
+ infile = fopen(argv[optind], "r");
+ if (!infile) {
+ fprintf(stderr, "Unable to open %s: %s\n", argv[optind], strerror(errno));
+ exit(2);
+ }
+ }
+
+ gsmtap_fd = gsmtap_source_init_fd(dest_host, dest_port);
+ if (gsmtap_fd < 0) {
+ fprintf(stderr, "Unable to create GSMTAP soicket: %s\n", strerror(errno));
+ exit(2);
+ }
+
+ /* prepare all the data structures that don't change for each line */
+ struct {
+ struct gsmtap_hdr gsmtap;
+ struct gsmtap_osmocore_log_hdr log;
+ } __attribute__ ((packed)) hdr;
+ struct timeval tv;
+
+ memset(&hdr, 0, sizeof(hdr));
+ hdr.gsmtap.version = GSMTAP_VERSION;
+ hdr.gsmtap.hdr_len = sizeof(hdr.gsmtap)/4;
+ hdr.gsmtap.type = GSMTAP_TYPE_OSMOCORE_LOG;
+
+ OSMO_STRLCPY_ARRAY(hdr.log.proc_name, proc_name);
+ OSMO_STRLCPY_ARRAY(hdr.log.subsys, subsys_name);
+ hdr.log.level = LOGL_INFO;
+
+ while ((line = fgets(buf, sizeof(buf), infile))) {
+ struct iovec iov[2] = {
+ { .iov_base = &hdr, .iov_len = sizeof(hdr) },
+ { .iov_base = buf, .iov_len = strlen(line) + 1 },
+ };
+ osmo_gettimeofday(&tv, NULL);
+ hdr.log.ts.sec = osmo_htonl(tv.tv_sec);
+ hdr.log.ts.usec = osmo_htonl(tv.tv_usec);
+
+ rc = writev(gsmtap_fd, iov, ARRAY_SIZE(iov));
+ if (rc <= 0) {
+ fprintf(stderr, "Short write on GSMTAP socket: %d (%s)\n", rc, strerror(errno));
+ exit(1);
+ }
+ }
+}