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Some dialplan functions, such as CUT(), expect to operate on variables on a

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channel.  So, this little hack lets them work in places where a channel doesn't
exist, such as within DUNDi configuration.
(issue #9465, reported and patched by Corydon76, testing by blitzrage)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@61765 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2007-04-23 18:17:00 +00:00
parent baab073219
commit 215adb35b6
1 changed files with 15 additions and 1 deletions
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16
main/pbx.c
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@@ -1642,7 +1642,21 @@ static void pbx_substitute_variables_helper_full(struct ast_channel *c, struct v
parse_variable_name(vars, &offset, &offset2, &isfunction);
if (isfunction) {
/* Evaluate function */
cp4 = ast_func_read(c, vars, workspace, VAR_BUF_SIZE) ? NULL : workspace;
if (c)
cp4 = ast_func_read(c, vars, workspace, VAR_BUF_SIZE) ? NULL : workspace;
else {
struct varshead old;
struct ast_channel *c = ast_channel_alloc(0, 0, "", "", "", "", "", 0, "Bogus/%p", vars);
if (c) {
memcpy(&old, &c->varshead, sizeof(old));
memcpy(&c->varshead, headp, sizeof(c->varshead));
cp4 = ast_func_read(c, vars, workspace, VAR_BUF_SIZE) ? NULL : workspace;
/* Don't deallocate the varshead that was passed in */
memcpy(&c->varshead, &old, sizeof(c->varshead));
ast_channel_free(c);
} else
ast_log(LOG_ERROR, "Unable to allocate bogus channel for variable substitution. Function results may be blank.\n");
}
if (option_debug)
ast_log(LOG_DEBUG, "Function result is '%s'\n", cp4 ? cp4 : "(null)");