Merged revisions 291073 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.6.2

........
  r291073 | rmudgett | 2010-10-11 11:39:17 -0500 (Mon, 11 Oct 2010) | 15 lines
  
  Fixed infinite loop in verbose/debug message output.
  
  Setting the module/filename specific message level and then changing it
  resulted in the linked list being looped on itself.  Traversing this
  linked list is an infinite loop if what you are looking for is not in the
  list.
  
  Also plugged some CLI parsing holes in the associated CLI command:
  
  * Removing a nonexistent module from the list actually added it with a
  level of zero.
  
  * Setting the non-module specific level to zero is now equivalent to
  setting it to "off" as documented.
........


git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.8@291075 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 39 insertions, 17 deletions

diff --git a/main/cli.c b/main/cli.c
index 77e52b863..7f4c1791f 100644
--- a/main/cli.c
+++ b/main/cli.c
@@ -386,6 +386,7 @@ static char *handle_verbose(struct ast_cli_entry *e, int cmd, struct ast_cli_arg
 {
 	int oldval;
 	int newlevel;
+	unsigned int is_debug;
 	int atleast = 0;
 	int fd = a->fd;
 	int argc = a->argc;
@@ -454,22 +455,23 @@ static char *handle_verbose(struct ast_cli_entry *e, int cmd, struct ast_cli_arg
 		dst = &option_debug;
 		oldval = option_debug;
 		what = "Core debug";
+		is_debug = 1;
 	} else {
 		dst = &option_verbose;
 		oldval = option_verbose;
 		what = "Verbosity";
+		is_debug = 0;
 	}
 	if (argc == e->args + 1 && !strcasecmp(argv[e->args], "off")) {
-		unsigned int debug = (*what == 'C');
 		newlevel = 0;
 
-		mll = debug ? &debug_modules : &verbose_modules;
+		mll = is_debug ? &debug_modules : &verbose_modules;
 
 		AST_RWLIST_WRLOCK(mll);
 		while ((ml = AST_RWLIST_REMOVE_HEAD(mll, entry))) {
 			ast_free(ml);
 		}
-		ast_clear_flag(&ast_options, debug ? AST_OPT_FLAG_DEBUG_MODULE : AST_OPT_FLAG_VERBOSE_MODULE);
+		ast_clear_flag(&ast_options, is_debug ? AST_OPT_FLAG_DEBUG_MODULE : AST_OPT_FLAG_VERBOSE_MODULE);
 		AST_RWLIST_UNLOCK(mll);
 
 		goto done;
@@ -481,21 +483,27 @@ static char *handle_verbose(struct ast_cli_entry *e, int cmd, struct ast_cli_arg
 	if (sscanf(argv[e->args + atleast], "%30d", &newlevel) != 1)
 		return CLI_SHOWUSAGE;
 	if (argc == e->args + atleast + 2) {
-		unsigned int debug = (*what == 'C');
+		/* We have specified a module name. */
 		char *mod = ast_strdupa(argv[e->args + atleast + 1]);
 
-		mll = debug ? &debug_modules : &verbose_modules;
-
 		if ((strlen(mod) > 3) && !strcasecmp(mod + strlen(mod) - 3, ".so")) {
 			mod[strlen(mod) - 3] = '\0';
 		}
 
+		mll = is_debug ? &debug_modules : &verbose_modules;
+
 		AST_RWLIST_WRLOCK(mll);
 
-		if ((ml = find_module_level(mod, debug)) && !newlevel) {
+		ml = find_module_level(mod, is_debug);
+		if (!newlevel) {
+			if (!ml) {
+				/* Specified off for a nonexistent entry. */
+				AST_RWLIST_UNLOCK(mll);
+				return CLI_SUCCESS;
+			}
 			AST_RWLIST_REMOVE(mll, ml, entry);
 			if (AST_RWLIST_EMPTY(mll))
-				ast_clear_flag(&ast_options, debug ? AST_OPT_FLAG_DEBUG_MODULE : AST_OPT_FLAG_VERBOSE_MODULE);
+				ast_clear_flag(&ast_options, is_debug ? AST_OPT_FLAG_DEBUG_MODULE : AST_OPT_FLAG_VERBOSE_MODULE);
 			AST_RWLIST_UNLOCK(mll);
 			ast_cli(fd, "%s was %d and has been set to 0 for '%s'\n", what, ml->level, mod);
 			ast_free(ml);
@@ -508,23 +516,37 @@ static char *handle_verbose(struct ast_cli_entry *e, int cmd, struct ast_cli_arg
 				AST_RWLIST_UNLOCK(mll);
 				return CLI_SUCCESS;
 			}
-		} else if (!(ml = ast_calloc(1, sizeof(*ml) + strlen(mod) + 1))) {
-			AST_RWLIST_UNLOCK(mll);
-			return CLI_FAILURE;
+			oldval = ml->level;
+			ml->level = newlevel;
+		} else {
+			ml = ast_calloc(1, sizeof(*ml) + strlen(mod) + 1);
+			if (!ml) {
+				AST_RWLIST_UNLOCK(mll);
+				return CLI_FAILURE;
+			}
+			oldval = ml->level;
+			ml->level = newlevel;
+			strcpy(ml->module, mod);
+			AST_RWLIST_INSERT_TAIL(mll, ml, entry);
 		}
 
-		oldval = ml->level;
-		ml->level = newlevel;
-		strcpy(ml->module, mod);
-
-		ast_set_flag(&ast_options, debug ? AST_OPT_FLAG_DEBUG_MODULE : AST_OPT_FLAG_VERBOSE_MODULE);
+		ast_set_flag(&ast_options, is_debug ? AST_OPT_FLAG_DEBUG_MODULE : AST_OPT_FLAG_VERBOSE_MODULE);
 
-		AST_RWLIST_INSERT_TAIL(mll, ml, entry);
 		AST_RWLIST_UNLOCK(mll);
 
 		ast_cli(fd, "%s was %d and has been set to %d for '%s'\n", what, oldval, ml->level, ml->module);
 
 		return CLI_SUCCESS;
+	} else if (!newlevel) {
+		/* Specified level as 0 instead of off. */
+		mll = is_debug ? &debug_modules : &verbose_modules;
+
+		AST_RWLIST_WRLOCK(mll);
+		while ((ml = AST_RWLIST_REMOVE_HEAD(mll, entry))) {
+			ast_free(ml);
+		}
+		ast_clear_flag(&ast_options, is_debug ? AST_OPT_FLAG_DEBUG_MODULE : AST_OPT_FLAG_VERBOSE_MODULE);
+		AST_RWLIST_UNLOCK(mll);
 	}
 
 done: