From dded41e5bed40cca8876e1056351cc1dbab309d0 Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@systemlinux.org>
Date: Sun, 14 Dec 2008 13:03:48 +0100
Subject: [PATCH] audiod: Implement --config-file option.

---
 NEWS       |  1 +
 audiod.c   | 56 ++++++++++++++++++++++++++++++++----------------------
 audiod.ggo |  6 ++++++
 3 files changed, 40 insertions(+), 23 deletions(-)

diff --git a/NEWS b/NEWS
index 3874bed1..8418cd8a 100644
--- a/NEWS
+++ b/NEWS
@@ -8,6 +8,7 @@ NEWS
 	- Improved help/man pages: The documentation of para_audiod,
 	  para_recv, para_filter and para_write now also contains
 	  all options of the available receivers/filters/writers.
+	- new audiod option: --config-file.
 
 --------------------------------------------
 0.3.3 (2008-12-01) "axiomatic perspectivity"
diff --git a/audiod.c b/audiod.c
index e3db6bea..63d42cac 100644
--- a/audiod.c
+++ b/audiod.c
@@ -214,16 +214,39 @@ __printf_2_3 void para_log(int ll, const char* fmt,...)
 	va_end(argp);
 }
 
-static char *configfile_exists(void)
+static void parse_config_or_die(void)
 {
-	char *home = para_homedir();
-	char *config_file = make_message("%s/.paraslash/audiod.conf",
-		home);
-	free(home);
-	if (file_exists(config_file))
-		return config_file;
+	char *config_file;
+
+	if (conf.config_file_given)
+		config_file = para_strdup(conf.config_file_arg);
+	else {
+		char *home = para_homedir();
+		config_file = make_message("%s/.paraslash/audiod.conf", home);
+		free(home);
+	}
+	if (conf.config_file_given && !file_exists(config_file)) {
+		PARA_EMERG_LOG("can not read config file %s\n", config_file);
+		goto err;
+	}
+	if (config_file) {
+		struct audiod_cmdline_parser_params params = {
+			.override = 0,
+			.initialize = 0,
+			.check_required = 1,
+			.check_ambiguity = 0,
+			.print_errors = 1
+		};
+		if (audiod_cmdline_parser_config_file(config_file, &conf, &params)) {
+			PARA_EMERG_LOG("parse error in config file\n");
+			goto err;
+		}
+	}
 	free(config_file);
-	return NULL;
+	return;
+err:
+	free(config_file);
+	exit(EXIT_FAILURE);
 }
 
 static void setup_signal_handling(void)
@@ -1099,7 +1122,6 @@ __noreturn static void print_help_and_die(void)
  * */
 int main(int argc, char *argv[])
 {
-	char *config_file;
 	int ret, i;
 	static struct sched s;
 	struct command_task command_task_struct, *cmd_task = &command_task_struct;
@@ -1115,29 +1137,17 @@ int main(int argc, char *argv[])
 	audiod_cmdline_parser_ext(argc, argv, &conf, &params);
 	HANDLE_VERSION_FLAG("audiod", conf);
 	para_drop_privileges(conf.user_arg, conf.group_arg);
-	config_file = configfile_exists();
-	if (config_file) {
-		params.override = 0;
-		params.initialize = 0;
-		params.check_required = 1;
-		params.check_ambiguity = 0;
-		params.print_errors = 1;
-		if (audiod_cmdline_parser_config_file(config_file, &conf, &params)) {
-			PARA_EMERG_LOG("parse error in config file\n");
-			exit(EXIT_FAILURE);
-		}
-		free(config_file);
-	}
+	parse_config_or_die();
 	if (conf.logfile_given)
 		logfile = open_log(conf.logfile_arg);
 	i = init_stream_io();
 	if (conf.help_given || conf.detailed_help_given)
 		print_help_and_die();
-	log_welcome("para_audiod", conf.loglevel_arg);
 	if (i < 0) {
 		PARA_EMERG_LOG("init stream io error: %s\n", para_strerror(-i));
 		exit(EXIT_FAILURE);
 	}
+	log_welcome("para_audiod", conf.loglevel_arg);
 	server_uptime(UPTIME_SET);
 	set_initial_status();
 	FOR_EACH_SLOT(i)
diff --git a/audiod.ggo b/audiod.ggo
index 3df0937e..8f960c67 100644
--- a/audiod.ggo
+++ b/audiod.ggo
@@ -14,6 +14,12 @@ int typestr="level"
 default="4"
 optional
 
+option "config_file" c
+#~~~~~~~~~~~~~~~~~~~~~
+"(default='~/.paraslash/audiod.conf'"
+string typestr="filename"
+optional
+
 option "logfile" L
 #~~~~~~~~~~~~~~~~~
 "where to write log output"
-- 
2.39.5