1 files changed, 138 insertions, 0 deletions
diff --git a/src/version.c b/src/version.c
new file mode 100644
index 0000000..c921564
--- /dev/null
+++ b/src/version.c
@@ -0,0 +1,138 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2016 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdio.h>
+#include "compat/compat.h"
+#include "log.h"
+
+static void
+version_display_array(FILE *destination, const char *prefix, const char *const *items)
+{
+	fprintf(destination, "%s", prefix);
+	size_t count = 0;
+	for (const char *const *p = items; *p; p++, count++)
+		fprintf(destination, "%s%s", count ? ", " : "", *p);
+	if (count == 0)
+		fprintf(destination, "(none)\n");
+	else
+		fprintf(destination, "\n");
+}
+
+void
+version_display(FILE *destination, const char *progname, int verbose)
+{
+	if (!verbose) {
+		fprintf(destination, "%s\n", PACKAGE_VERSION);
+		return;
+	}
+
+	const char *const lldp_features[] = {
+#ifdef ENABLE_LLDPMED
+		"LLDP-MED",
+#endif
+#ifdef ENABLE_DOT1
+		"Dot1",
+#endif
+#ifdef ENABLE_DOT3
+		"Dot3",
+#endif
+#ifdef ENABLE_CUSTOM
+		"Custom TLV",
+#endif
+		NULL
+	};
+	const char *const protocols[] = {
+#ifdef ENABLE_CDP
+		"CDP",
+#endif
+#ifdef ENABLE_FDP
+		"FDP",
+#endif
+#ifdef ENABLE_EDP
+		"EDP",
+#endif
+#ifdef ENABLE_SONMP
+		"SONMP",
+#endif
+		NULL
+	};
+	const char *const output_formats[] = { "TEXT", "KV", "JSON",
+#ifdef USE_XML
+		"XML",
+#endif
+		NULL };
+
+	fprintf(destination, "%s %s\n", progname, PACKAGE_VERSION);
+	fprintf(destination, "  Built on " BUILD_DATE "\n");
+	fprintf(destination, "\n");
+
+	/* Features */
+	if (!strcmp(progname, "lldpd")) {
+		version_display_array(destination,
+		    "Additional LLDP features:    ", lldp_features);
+		version_display_array(destination,
+		    "Additional protocols:        ", protocols);
+		fprintf(destination,
+		    "SNMP support:                "
+#ifdef USE_SNMP
+		    "yes\n"
+#else
+		    "no\n"
+#endif
+		);
+#ifdef HOST_OS_LINUX
+		fprintf(destination,
+		    "Old kernel support:          "
+#  ifdef ENABLE_OLDIES
+		    "yes"
+#  else
+		    "no"
+#  endif
+		    " (Linux " MIN_LINUX_KERNEL_VERSION "+)\n");
+#endif
+#ifdef ENABLE_PRIVSEP
+		fprintf(destination,
+		    "Privilege separation:        "
+		    "enabled\n");
+		fprintf(destination, "Privilege separation user:   " PRIVSEP_USER "\n");
+		fprintf(destination,
+		    "Privilege separation group:  " PRIVSEP_GROUP "\n");
+		fprintf(destination,
+		    "Privilege separation chroot: " PRIVSEP_CHROOT "\n");
+#else
+		fprintf(destination,
+		    "Privilege separation:        "
+		    "disabled\n");
+#endif
+		fprintf(destination, "Configuration directory:     " SYSCONFDIR "\n");
+	}
+
+	if (!strcmp(progname, "lldpcli")) {
+		version_display_array(destination,
+		    "Additional output formats:   ", output_formats);
+	}
+
+	fprintf(destination, "\n");
+
+	/* Build */
+	fprintf(destination, "C compiler command: %s\n", LLDP_CC);
+	fprintf(destination, "Linker command:     %s\n", LLDP_LD);
+}