Bug 5858 - Make the chanvars.c functions return a 'const char *'

This should prevent us from unintentionally changing variable
values when they're returned from pbx_builtin_getvar_helper.


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@7304 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 3 insertions, 3 deletions

diff --git a/include/asterisk/pbx.h b/include/asterisk/pbx.h
index a10546174..9332b9e6a 100644
--- a/include/asterisk/pbx.h
+++ b/include/asterisk/pbx.h
@@ -605,7 +605,7 @@ struct ast_ignorepat *ast_walk_context_ignorepats(struct ast_context *con,
 struct ast_sw *ast_walk_context_switches(struct ast_context *con, struct ast_sw *sw);
 
 int pbx_builtin_serialize_variables(struct ast_channel *chan, char *buf, size_t size);
-extern char *pbx_builtin_getvar_helper(struct ast_channel *chan, const char *name);
+extern const char *pbx_builtin_getvar_helper(struct ast_channel *chan, const char *name);
 extern void pbx_builtin_pushvar_helper(struct ast_channel *chan, const char *name, const char *value);
 extern void pbx_builtin_setvar_helper(struct ast_channel *chan, const char *name, const char *value);
 extern void pbx_retrieve_variable(struct ast_channel *c, const char *var, char **ret, char *workspace, int workspacelen, struct varshead *headp);
@@ -620,11 +620,11 @@ int ast_extension_patmatch(const char *pattern, const char *data);
   set to 1, sets to auto fall through.  If newval set to 0, sets to no auto
   fall through (reads extension instead).  Returns previous value. */
 extern int pbx_set_autofallthrough(int newval);
-int ast_goto_if_exists(struct ast_channel *chan, char* context, char *exten, int priority);
+int ast_goto_if_exists(struct ast_channel *chan, const char *context, const char *exten, int priority);
 /* I can find neither parsable nor parseable at dictionary.com, but google gives me 169000 hits for parseable and only 49,800 for parsable */
 int ast_parseable_goto(struct ast_channel *chan, const char *goto_string);
 int ast_explicit_goto(struct ast_channel *chan, const char *context, const char *exten, int priority);
-int ast_async_goto_if_exists(struct ast_channel *chan, char* context, char *exten, int priority);
+int ast_async_goto_if_exists(struct ast_channel *chan, const char *context, const char *exten, int priority);
 
 struct ast_custom_function* ast_custom_function_find(char *name);
 int ast_custom_function_unregister(struct ast_custom_function *acf);