diff options
author | Russell Bryant <russell@russellbryant.com> | 2006-02-15 18:39:52 +0000 |
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committer | Russell Bryant <russell@russellbryant.com> | 2006-02-15 18:39:52 +0000 |
commit | 5c95b9955c79903ab016a794a3b40dd17ffb1b82 (patch) | |
tree | afc803e94010b2ebbd5ae93a17c926ad1f88ef8b /pbx.c | |
parent | 3d394586da4e41dd510459d73d669bc03906e75f (diff) |
Fix the retrieval of the new SYSTEMNAME variable. Also, clarify some
documentation of how pbx_retrieve_variable works. (issue #6493)
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@10209 65c4cc65-6c06-0410-ace0-fbb531ad65f3
Diffstat (limited to 'pbx.c')
-rw-r--r-- | pbx.c | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -909,13 +909,18 @@ void pbx_retrieve_variable(struct ast_channel *c, const char *var, char **ret, c /* * Look first into predefined variables, then into variable lists. + * Variable 's' points to the result, according to the following rules: * s == ¬_found (set at the beginning) means that we did not find a - * matching variable and need to look into more places. + * matching variable and need to look into more places. * If s != ¬_found, s is a valid result string as follows: * s = NULL if the variable does not have a value; + * you typically do this when looking for an unset predefined variable. * s = workspace if the result has been assembled there; + * typically done when the result is built e.g. with an snprintf(), + * so we don't need to do an additional copy. * s != workspace in case we have a string, that needs to be copied * (the ast_copy_string is done once for all at the end). + * Typically done when the result is already available in some string. */ s = ¬_found; /* default value */ if (c) { /* This group requires a valid channel */ @@ -961,7 +966,7 @@ void pbx_retrieve_variable(struct ast_channel *c, const char *var, char **ret, c snprintf(workspace, workspacelen, "%u",(int)time(NULL)); s = workspace; } else if (!strcmp(var, "SYSTEMNAME")) { - ast_copy_string(workspace, ast_config_AST_SYSTEM_NAME, workspacelen); + s = ast_config_AST_SYSTEM_NAME; } } /* if not found, look into chanvars or global vars */ |