commit 098038ab181a24d6050413a409b1bcb327d21ea6
author Neels Hofmeyr <neels@hofmeyr.de> Tue Sep 11 23:49:13 2018 +0200
committer Neels Hofmeyr <nhofmeyr@sysmocom.de> Thu Sep 13 15:46:55 2018 +0000
tree bdf19b32bf965f76146a0bddfcf5613a9f8a94f4
parent 7e0686c6b4b456ec4e6e15689694b1bcf96c301f

logging vty: write: check logging levels validity

Change-Id: If683b1272ad2d5b402b91c52c496aa7975bc6315

include/osmocom/core/logging_internal.h

diff --git a/include/osmocom/core/logging_internal.h b/include/osmocom/core/logging_internal.h
index 55b1bbd..a510f83 100644
--- a/include/osmocom/core/logging_internal.h
+++ b/include/osmocom/core/logging_internal.h
@@ -8,6 +8,7 @@
 
 extern void *tall_log_ctx;
 extern const struct log_info *osmo_log_info;
+extern const struct value_string loglevel_strs[];
 
 void assert_loginfo(const char *src);
 

src/logging.c

diff --git a/src/logging.c b/src/logging.c
index 67470a5..e7cc472 100644
--- a/src/logging.c
+++ b/src/logging.c
@@ -63,7 +63,7 @@
 void *tall_log_ctx = NULL;
 LLIST_HEAD(osmo_log_target_list);
 
-static const struct value_string loglevel_strs[] = {
+const struct value_string loglevel_strs[] = {
 	{ LOGL_DEBUG,	"DEBUG" },
 	{ LOGL_INFO,	"INFO" },
 	{ LOGL_NOTICE,	"NOTICE" },

src/vty/logging_vty.c

diff --git a/src/vty/logging_vty.c b/src/vty/logging_vty.c
index 6758dd2..c8e8520 100644
--- a/src/vty/logging_vty.c
+++ b/src/vty/logging_vty.c
@@ -861,21 +861,37 @@
 		get_value_string(logging_print_file_args, tgt->print_filename2),
 		VTY_NEWLINE);
 
-	/* stupid old osmo logging API uses uppercase strings... */
-	if (tgt->loglevel)
-		vty_out(vty, "  logging level all %s%s", osmo_str_tolower(log_level_str(tgt->loglevel)),
-			VTY_NEWLINE);
+	if (tgt->loglevel) {
+		const char *level_str = get_value_string_or_null(loglevel_strs, tgt->loglevel);
+		level_str = osmo_str_tolower(level_str);
+		if (!level_str)
+			vty_out(vty, "%% Invalid log level %u for 'all'%s", tgt->loglevel, VTY_NEWLINE);
+		else
+			vty_out(vty, "  logging level all %s%s", level_str, VTY_NEWLINE);
+	}
 
 	for (i = 0; i < osmo_log_info->num_cat; i++) {
 		const struct log_category *cat = &tgt->categories[i];
+		const char *cat_name;
+		const char *level_str;
 
 		/* skip empty entries in the array */
 		if (!osmo_log_info->cat[i].name)
 			continue;
 
-		/* stupid old osmo logging API uses uppercase strings... */
-		vty_out(vty, "  logging level %s", osmo_str_tolower(osmo_log_info->cat[i].name+1));
-		vty_out(vty, " %s%s", osmo_str_tolower(log_level_str(cat->loglevel)), VTY_NEWLINE);
+		/* Note: cat_name references the static buffer returned by osmo_str_tolower(), will
+		 * become invalid after next osmo_str_tolower() invocation. */
+		cat_name = osmo_str_tolower(osmo_log_info->cat[i].name+1);
+
+		level_str = get_value_string_or_null(loglevel_strs, cat->loglevel);
+		if (!level_str) {
+			vty_out(vty, "%% Invalid log level %u for %s%s", cat->loglevel, cat_name,
+				VTY_NEWLINE);
+			continue;
+		}
+
+		vty_out(vty, "  logging level %s", cat_name);
+		vty_out(vty, " %s%s", osmo_str_tolower(level_str), VTY_NEWLINE);
 	}
 
 	return 1;