From 35edbc4048f420a974ff9fd5e1a34902950741f4 Mon Sep 17 00:00:00 2001
From: Tobias Brunner <tobias@strongswan.org>
Date: Mon, 26 Jul 2021 18:16:00 +0200
Subject: [PATCH] debug: Support configuring different log levels for groups in
 default logger

---
 src/libstrongswan/utils/debug.c | 37 +++++++++++++++++++++++++--------
 src/libstrongswan/utils/debug.h |  5 ++++-
 2 files changed, 32 insertions(+), 10 deletions(-)

diff --git a/src/libstrongswan/utils/debug.c b/src/libstrongswan/utils/debug.c
index a3a042be5..a5d478421 100644
--- a/src/libstrongswan/utils/debug.c
+++ b/src/libstrongswan/utils/debug.c
@@ -63,9 +63,10 @@ ENUM(debug_lower_names, DBG_DMN, DBG_ANY,
 );
 
 /**
- * level logged by the default logger
+ * level logged by the default logger for specific groups, to simplify things
+ * we store level-1, so initialization to 0 is like setting it to 1
  */
-static level_t default_level = 1;
+static level_t default_level[DBG_MAX];
 
 /**
  * stream logged to by the default logger
@@ -81,7 +82,8 @@ void dbg_default(debug_t group, level_t level, char *fmt, ...)
 	{
 		default_stream = stderr;
 	}
-	if (level <= default_level)
+	/* levels are stored as level-1 */
+	if (level <= default_level[group]+1)
 	{
 		va_list args;
 
@@ -92,16 +94,34 @@ void dbg_default(debug_t group, level_t level, char *fmt, ...)
 	}
 }
 
-/**
- * set the level logged by the default stderr logger
+/*
+ * Described in header
+ */
+void dbg_default_set_level_group(debug_t group, level_t level)
+{
+	if (group < DBG_ANY)
+	{
+		default_level[group] = level-1;
+	}
+	else
+	{
+		for (group = 0; group < DBG_MAX; group++)
+		{
+			default_level[group] = level-1;
+		}
+	}
+}
+
+/*
+ * Described in header
  */
 void dbg_default_set_level(level_t level)
 {
-	default_level = level;
+	dbg_default_set_level_group(DBG_ANY, level);
 }
 
-/**
- * set the stream logged by dbg_default() to
+/*
+ * Described in header
  */
 void dbg_default_set_stream(FILE *stream)
 {
@@ -112,4 +132,3 @@ void dbg_default_set_stream(FILE *stream)
  * The registered debug hook.
  */
 void (*dbg) (debug_t group, level_t level, char *fmt, ...) = dbg_default;
-
diff --git a/src/libstrongswan/utils/debug.h b/src/libstrongswan/utils/debug.h
index 50ebbf50f..127da579a 100644
--- a/src/libstrongswan/utils/debug.h
+++ b/src/libstrongswan/utils/debug.h
@@ -146,9 +146,12 @@ extern void (*dbg) (debug_t group, level_t level, char *fmt, ...);
 /** default logging function */
 void dbg_default(debug_t group, level_t level, char *fmt, ...);
 
-/** set the level logged by dbg_default() */
+/** set the level logged by dbg_default() for all groups */
 void dbg_default_set_level(level_t level);
 
+/** set the level logged by dbg_default() for a specific group */
+void dbg_default_set_level_group(debug_t group, level_t level);
+
 /** set the stream logged by dbg_default() to */
 void dbg_default_set_stream(FILE *stream);