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authorDaniel Baumann <daniel.baumann@progress-linux.org>2021-03-04 19:22:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2021-03-04 20:43:22 +0000
commit22c74419e2c258319bc723351876604b3304604b (patch)
tree8c799a78d53f67388fdf42900657eda617c1306a /src/sig.c
parentInitial commit. (diff)
downloaddnscap-22c74419e2c258319bc723351876604b3304604b.tar.xz
dnscap-22c74419e2c258319bc723351876604b3304604b.zip
Adding upstream version 2.0.0+debian.upstream/2.0.0+debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/sig.c')
-rw-r--r--src/sig.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/src/sig.c b/src/sig.c
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index 0000000..7e7376e
--- /dev/null
+++ b/src/sig.c
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+/*
+ * Copyright (c) 2016-2021, OARC, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include "sig.h"
+#include "log.h"
+#include "dumper.h"
+#include "pcaps.h"
+
+void setsig(int sig, int oneshot)
+{
+ struct sigaction sa;
+
+ memset(&sa, 0, sizeof sa);
+ if (oneshot) {
+ sa.sa_handler = sigbreak;
+ sa.sa_flags = SA_RESETHAND;
+ } else {
+ sa.sa_handler = sigclose;
+ sa.sa_flags = SA_RESTART;
+ }
+ if (sigaction(sig, &sa, NULL) < 0) {
+ logerr("sigaction: %s", strerror(errno));
+ exit(1);
+ }
+}
+
+void sigclose(int signum)
+{
+ if (0 == last_ts.tv_sec)
+ gettimeofday(&last_ts, NULL);
+ if (signum == SIGALRM)
+ alarm_set = FALSE;
+ if (dumper_close(last_ts))
+ breakloop_pcaps();
+}
+
+void sigbreak(int signum __attribute__((unused)))
+{
+ logerr("%s: signalled break", ProgramName);
+ main_exit = TRUE;
+ breakloop_pcaps();
+}
+
+void* sigthread(void* arg)
+{
+#if HAVE_PTHREAD
+ sigset_t* set = (sigset_t*)arg;
+ int sig, err;
+
+ while (1) {
+ if ((err = sigwait(set, &sig))) {
+ logerr("sigwait: %s", strerror(err));
+ return 0;
+ }
+
+ switch (sig) {
+ case SIGALRM:
+ sigclose(sig);
+ break;
+
+ default:
+ sigbreak(sig);
+ break;
+ }
+ }
+#endif
+
+ return 0;
+}