static int return_exec(struct ast_channel *chan, void *data)
{
char *label = pbx_builtin_getvar_helper(chan, STACKVAR);
if (ast_strlen_zero(label)) {
ast_log(LOG_ERROR, "Return without Gosub: stack is empty\n");
return -1;
} else if (ast_parseable_goto(chan, label)) {
ast_log(LOG_WARNING, "No next statement after Gosub?\n");
return -1;
}
pbx_builtin_setvar_helper(chan, STACKVAR, NULL);
return 0;
}
static int while_continue_exec(struct ast_channel *chan, void *data)
{
int x;
const char *prefix = "WHILE", *while_pri=NULL;
for (x = 0; ; x++) {
const char *tmp = get_index(chan, prefix, x);
if (tmp)
while_pri = tmp;
else
break;
}
if (while_pri)
ast_parseable_goto(chan, while_pri);
return 0;
}
static int gosub_exec(struct ast_channel *chan, void *data)
{
char newlabel[AST_MAX_EXTENSION * 2 + 3 + 11];
struct localuser *u;
if (ast_strlen_zero(data)) {
ast_log(LOG_ERROR, "%s requires an argument: %s([[context|]exten|]priority)\n", app_gosub, app_gosub);
return -1;
}
LOCAL_USER_ADD(u);
snprintf(newlabel, sizeof(newlabel), "%s|%s|%d", chan->context, chan->exten, chan->priority + 1);
if (ast_parseable_goto(chan, data)) {
LOCAL_USER_REMOVE(u);
return -1;
}
pbx_builtin_pushvar_helper(chan, STACKVAR, newlabel);
LOCAL_USER_REMOVE(u);
return 0;
}
static int random_exec(struct ast_channel *chan, void *data)
{
int res=0;
struct localuser *u;
char *s;
char *prob;
int probint;
static int deprecated = 0;
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "Random requires an argument ([probability]:[[context|]extension|]priority)\n");
return -1;
}
LOCAL_USER_ADD(u);
s = ast_strdupa(data);
prob = strsep(&s,":");
if ((!prob) || (sscanf(prob, "%d", &probint) != 1))
probint = 0;
if (!deprecated) {
deprecated = 1;
ast_log(LOG_WARNING, "Random is deprecated in Asterisk 1.4. Replace with GotoIf($[${RAND(0,99)} + %d >= 100]?%s)\n", probint, s);
}
if ((ast_random() % 100) + probint >= 100) {
res = ast_parseable_goto(chan, s);
if (option_verbose > 2)
ast_verbose( VERBOSE_PREFIX_3 "Random branches to (%s,%s,%d)\n",
chan->context,chan->exten, chan->priority+1);
}
LOCAL_USER_REMOVE(u);
return res;
}
static int _while_exec(struct ast_channel *chan, void *data, int end)
{
int res=0;
const char *while_pri = NULL;
char *my_name = NULL;
const char *condition = NULL, *label = NULL;
char varname[VAR_SIZE], end_varname[VAR_SIZE];
const char *prefix = "WHILE";
size_t size=0;
int used_index_i = -1, x=0;
char used_index[VAR_SIZE] = "0", new_index[VAR_SIZE] = "0";
if (!chan) {
/* huh ? */
return -1;
}
#if 0
/* dont want run away loops if the chan isn't even up
this is up for debate since it slows things down a tad ......
Debate is over... this prevents While/EndWhile from working
within the "h" extension. Not good.
*/
if (ast_waitfordigit(chan,1) < 0)
return -1;
#endif
for (x=0;;x++) {
if (get_index(chan, prefix, x)) {
used_index_i = x;
} else
break;
}
snprintf(used_index, VAR_SIZE, "%d", used_index_i);
snprintf(new_index, VAR_SIZE, "%d", used_index_i + 1);
if (!end)
condition = ast_strdupa(data);
size = strlen(chan->context) + strlen(chan->exten) + 32;
my_name = alloca(size);
memset(my_name, 0, size);
snprintf(my_name, size, "%s_%s_%d", chan->context, chan->exten, chan->priority);
ast_channel_lock(chan);
if (end) {
label = used_index;
} else if (!(label = pbx_builtin_getvar_helper(chan, my_name))) {
label = new_index;
pbx_builtin_setvar_helper(chan, my_name, label);
}
snprintf(varname, VAR_SIZE, "%s_%s", prefix, label);
if ((while_pri = pbx_builtin_getvar_helper(chan, varname)) && !end) {
while_pri = ast_strdupa(while_pri);
snprintf(end_varname,VAR_SIZE,"END_%s",varname);
}
ast_channel_unlock(chan);
if ((!end && !pbx_checkcondition(condition)) || (end == 2)) {
/* Condition Met (clean up helper vars) */
const char *goto_str;
pbx_builtin_setvar_helper(chan, varname, NULL);
pbx_builtin_setvar_helper(chan, my_name, NULL);
snprintf(end_varname,VAR_SIZE,"END_%s",varname);
ast_channel_lock(chan);
if ((goto_str = pbx_builtin_getvar_helper(chan, end_varname))) {
ast_parseable_goto(chan, goto_str);
pbx_builtin_setvar_helper(chan, end_varname, NULL);
} else {
int pri = find_matching_endwhile(chan);
if (pri > 0) {
ast_verb(3, "Jumping to priority %d\n", pri);
chan->priority = pri;
} else {
ast_log(LOG_WARNING, "Couldn't find matching EndWhile? (While at %s@%s priority %d)\n", chan->context, chan->exten, chan->priority);
}
}
ast_channel_unlock(chan);
return res;
}
if (!end && !while_pri) {
char *goto_str;
size = strlen(chan->context) + strlen(chan->exten) + 32;
goto_str = alloca(size);
memset(goto_str, 0, size);
snprintf(goto_str, size, "%s,%s,%d", chan->context, chan->exten, chan->priority);
pbx_builtin_setvar_helper(chan, varname, goto_str);
}
else if (end && while_pri) {
/* END of loop */
snprintf(end_varname, VAR_SIZE, "END_%s", varname);
if (! pbx_builtin_getvar_helper(chan, end_varname)) {
char *goto_str;
size = strlen(chan->context) + strlen(chan->exten) + 32;
goto_str = alloca(size);
memset(goto_str, 0, size);
snprintf(goto_str, size, "%s,%s,%d", chan->context, chan->exten, chan->priority+1);
pbx_builtin_setvar_helper(chan, end_varname, goto_str);
}
ast_parseable_goto(chan, while_pri);
}
return res;
}
static int _while_exec(struct ast_channel *chan, void *data, int end)
{
int res=0;
struct localuser *u;
char *while_pri = NULL;
char *goto_str = NULL, *my_name = NULL;
char *condition = NULL, *label = NULL;
char varname[VAR_SIZE], end_varname[VAR_SIZE];
const char *prefix = "WHILE";
size_t size=0;
int used_index_i = -1, x=0;
char used_index[VAR_SIZE] = "0", new_index[VAR_SIZE] = "0";
if (!chan) {
/* huh ? */
return -1;
}
LOCAL_USER_ADD(u);
/* dont want run away loops if the chan isn't even up
this is up for debate since it slows things down a tad ......
*/
if (ast_waitfordigit(chan,1) < 0)
ALL_DONE(u,-1);
for (x=0;;x++) {
if (get_index(chan, prefix, x)) {
used_index_i = x;
} else
break;
}
snprintf(used_index, VAR_SIZE, "%d", used_index_i);
snprintf(new_index, VAR_SIZE, "%d", used_index_i + 1);
if (!end) {
condition = ast_strdupa((char *) data);
}
size = strlen(chan->context) + strlen(chan->exten) + 32;
my_name = alloca(size);
memset(my_name, 0, size);
snprintf(my_name, size, "%s_%s_%d", chan->context, chan->exten, chan->priority);
if (ast_strlen_zero(label)) {
if (end)
label = used_index;
else if (!(label = pbx_builtin_getvar_helper(chan, my_name))) {
label = new_index;
pbx_builtin_setvar_helper(chan, my_name, label);
}
}
snprintf(varname, VAR_SIZE, "%s_%s", prefix, label);
while_pri = pbx_builtin_getvar_helper(chan, varname);
if ((while_pri = pbx_builtin_getvar_helper(chan, varname)) && !end) {
snprintf(end_varname,VAR_SIZE,"END_%s",varname);
}
if (!end && !pbx_checkcondition(condition)) {
/* Condition Met (clean up helper vars) */
pbx_builtin_setvar_helper(chan, varname, NULL);
pbx_builtin_setvar_helper(chan, my_name, NULL);
snprintf(end_varname,VAR_SIZE,"END_%s",varname);
if ((goto_str=pbx_builtin_getvar_helper(chan, end_varname))) {
ast_parseable_goto(chan, goto_str);
pbx_builtin_setvar_helper(chan, end_varname, NULL);
} else {
int pri = find_matching_endwhile(chan);
if (pri > 0) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Jumping to priority %d\n", pri);
chan->priority = pri;
} else {
ast_log(LOG_WARNING, "Couldn't find matching EndWhile? (While at %s@%s priority %d)\n", chan->context, chan->exten, chan->priority);
}
}
ALL_DONE(u,res);
}
if (!end && !while_pri) {
size = strlen(chan->context) + strlen(chan->exten) + 32;
goto_str = alloca(size);
memset(goto_str, 0, size);
snprintf(goto_str, size, "%s|%s|%d", chan->context, chan->exten, chan->priority);
pbx_builtin_setvar_helper(chan, varname, goto_str);
}
else if (end && while_pri) {
/* END of loop */
snprintf(end_varname, VAR_SIZE, "END_%s", varname);
if (! pbx_builtin_getvar_helper(chan, end_varname)) {
size = strlen(chan->context) + strlen(chan->exten) + 32;
goto_str = alloca(size);
memset(goto_str, 0, size);
snprintf(goto_str, size, "%s|%s|%d", chan->context, chan->exten, chan->priority+1);
pbx_builtin_setvar_helper(chan, end_varname, goto_str);
}
ast_parseable_goto(chan, while_pri);
}
ALL_DONE(u, res);
}
