Ensure that we check for the special value CONFIG_STATUS_FILEINVALID.

(closes issue #15786)
 Reported by: a_villacis
 Patches: 
       asterisk-1.6.2.0-beta4-manager-fix-crash-on-include-nonexistent-file.patch uploaded by a villacis (license 660)
       (Plus a few of my own, to catch the remaining places within manager.c where it could have been a problem)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@214514 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/manager.c

@@ -2083,9 +2083,12 @@ static int action_getconfig(struct mansession *s, const struct message *m)
 		return 0;
 	}
 	cfg = ast_config_load2(fn, "manager", config_flags);
-	if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEINVALID) {
+	if (cfg == CONFIG_STATUS_FILEMISSING) {
 		astman_send_error(s, m, "Config file not found");
 		return 0;
+	} else if (cfg == CONFIG_STATUS_FILEINVALID) {
+		astman_send_error(s, m, "Config file has invalid format");
+		return 0;
 	}
 
 	astman_start_ack(s, m);
@@ -2121,7 +2124,10 @@ static int action_listcategories(struct mansession *s, const struct message *m)
 		return 0;
 	}
 	if (!(cfg = ast_config_load2(fn, "manager", config_flags))) {
-		astman_send_error(s, m, "Config file not found or file has invalid syntax");
+		astman_send_error(s, m, "Config file not found");
+		return 0;
+	} else if (cfg == CONFIG_STATUS_FILEINVALID) {
+		astman_send_error(s, m, "Config file has invalid format");
 		return 0;
 	}
 	astman_start_ack(s, m);
@@ -2172,6 +2178,9 @@ static int action_getconfigjson(struct mansession *s, const struct message *m)
 	if (!(cfg = ast_config_load2(fn, "manager", config_flags))) {
 		astman_send_error(s, m, "Config file not found");
 		return 0;
+	} else if (cfg == CONFIG_STATUS_FILEINVALID) {
+		astman_send_error(s, m, "Config file has invalid format");
+		return 0;
 	}
 
 	buf_len = 512;
@@ -2382,6 +2391,9 @@ static int action_updateconfig(struct mansession *s, const struct message *m)
 	if (!(cfg = ast_config_load2(sfn, "manager", config_flags))) {
 		astman_send_error(s, m, "Config file not found");
 		return 0;
+	} else if (cfg == CONFIG_STATUS_FILEINVALID) {
+		astman_send_error(s, m, "Config file has invalid format");
+		return 0;
 	}
 	result = handle_updates(s, m, cfg, dfn);
 	if (!result) {
@@ -5430,8 +5442,8 @@ static int __init_manager(int reload)
 	}
 
 	displayconnects = 1;
-	if (!cfg) {
-		ast_log(LOG_NOTICE, "Unable to open AMI configuration manager.conf. Asterisk management interface (AMI) disabled.\n");
+	if (!cfg || cfg == CONFIG_STATUS_FILEINVALID) {
+		ast_log(LOG_NOTICE, "Unable to open AMI configuration manager.conf, or configuration is invalid. Asterisk management interface (AMI) disabled.\n");
 		return 0;
 	}
 
@@ -5507,7 +5519,7 @@ static int __init_manager(int reload)
 
 	/* First, get users from users.conf */
 	ucfg = ast_config_load2("users.conf", "manager", config_flags);
-	if (ucfg && (ucfg != CONFIG_STATUS_FILEUNCHANGED)) {
+	if (ucfg && (ucfg != CONFIG_STATUS_FILEUNCHANGED) && ucfg != CONFIG_STATUS_FILEINVALID) {
 		const char *hasmanager;
 		int genhasmanager = ast_true(ast_variable_retrieve(ucfg, "general", "hasmanager"));