charon-cmd: Add --debug argument to set the default log level

src/charon-cmd/charon-cmd.c

@@ -36,6 +36,11 @@
 #include "cmd/cmd_connection.h"
 #include "cmd/cmd_creds.h"
 
+/**
+ * Default loglevel
+ */
+static level_t default_loglevel = LEVEL_CTRL;
+
 /**
  * Loglevel configuration
  */
@@ -63,7 +68,7 @@ static void dbg_stderr(debug_t group, level_t level, char *fmt, ...)
 {
 	va_list args;
 
-	if (level <= 1)
+	if (level <= default_loglevel)
 	{
 		va_start(args, fmt);
 		fprintf(stderr, "00[%N] ", debug_names, group);
@@ -280,6 +285,9 @@ static void handle_arguments(int argc, char *argv[], bool simple)
 			case CMD_OPT_VERSION:
 				printf("%s, strongSwan %s\n", "charon-cmd", VERSION);
 				exit(0);
+			case CMD_OPT_DEBUG:
+				default_loglevel = atoi(optarg);
+				continue;
 			default:
 				if (simple)
 				{
@@ -338,7 +346,7 @@ int main(int argc, char *argv[])
 	}
 	for (group = 0; group < DBG_MAX; group++)
 	{
-		levels[group] = LEVEL_CTRL;
+		levels[group] = default_loglevel;
 	}
 	charon->load_loggers(charon, levels, TRUE);
 

src/charon-cmd/cmd/cmd_options.c

@@ -28,6 +28,8 @@ cmd_option_t cmd_options[CMD_OPT_COUNT] = {
 	  "print this usage information and exit", {}},
 	{ CMD_OPT_VERSION, "version", no_argument, "",
 	  "show version information and exit", {}},
+	{ CMD_OPT_DEBUG, "debug", required_argument, "level",
+	  "set the default log level (-1..4, default: 1)", {}},
 	{ CMD_OPT_HOST, "host", required_argument, "hostname",
 	  "DNS name or address to connect to", {}},
 	{ CMD_OPT_IDENTITY, "identity", required_argument, "identity",

src/charon-cmd/cmd/cmd_options.h

@@ -33,6 +33,7 @@ typedef enum cmd_option_type_t cmd_option_type_t;
 enum cmd_option_type_t {
 	CMD_OPT_HELP,
 	CMD_OPT_VERSION,
+	CMD_OPT_DEBUG,
 	CMD_OPT_HOST,
 	CMD_OPT_IDENTITY,
 	CMD_OPT_REMOTE_IDENTITY,