Adding upstream version 2.0.0+debian.

Signed-off-by: Daniel Baumann <daniel@debian.org>

src/sig.c

@@ -0,0 +1,102 @@
+/*
+ * 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;
+}