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https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r111341 | murf | 2008-03-26 21:21:05 -0600 (Wed, 26 Mar 2008) | 15 lines


(closes issue #12302)
Reported by: pj
Tested by: murf

These changes will set a channel variable ~~EXTEN~~ just before generating code
for a switch, with the value of ${EXTEN}. The exten is marked as having a switch, 
and ever after that, till the end of the exten, we substitute any ${EXTEN} 
with ${~~EXTEN~~} instead in application arguments; (and the ${EXTEN: also). 
The reason for this, is that because switches are coded using 
separate extensions to provide pattern matching, and
jumping to/from these switch extensions messes up the ${EXTEN} value, 
which blows the minds of users.


........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@111360 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Steve Murphy
2008-03-27 04:47:12 +00:00
parent 8f2ae67a3e
commit 2427603eaf
4 changed files with 95 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

143
res/ael/pval.c
View File

@@ -2915,8 +2915,10 @@ struct ael_extension *new_exten(void)
return x;
}
void linkprio(struct ael_extension *exten, struct ael_priority *prio)
void linkprio(struct ael_extension *exten, struct ael_priority *prio, struct ael_extension *mother_exten)
{
char *p1, *p2;
if (!exten->plist) {
exten->plist = prio;
exten->plist_last = prio;
@@ -2926,6 +2928,33 @@ void linkprio(struct ael_extension *exten, struct ael_priority *prio)
}
if( !prio->exten )
prio->exten = exten; /* don't override the switch value */
/* The following code will cause all priorities within an extension
to have ${EXTEN} or ${EXTEN: replaced with ~~EXTEN~~, which is
set just before the first switch in an exten. The switches
will muck up the original ${EXTEN} value, so we save it away
and the user accesses this copy instead. */
if (prio->appargs && ((mother_exten && mother_exten->has_switch) || exten->has_switch) ) {
while ((p1 = strstr(prio->appargs, "${EXTEN}"))) {
p2 = malloc(strlen(prio->appargs)+5);
*p1 = 0;
strcpy(p2, prio->appargs);
strcat(p2, "${~~EXTEN~~}");
if (*(p1+8))
strcat(p2, p1+8);
free(prio->appargs);
prio->appargs = p2;
}
while ((p1 = strstr(prio->appargs, "${EXTEN:"))) {
p2 = malloc(strlen(prio->appargs)+5);
*p1 = 0;
strcpy(p2, prio->appargs);
strcat(p2, "${~~EXTEN~~:");
if (*(p1+8))
strcat(p2, p1+8);
free(prio->appargs);
prio->appargs = p2;
}
}
}
void destroy_extensions(struct ael_extension *exten)
@@ -3040,7 +3069,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
struct ael_priority *pr;
struct ael_priority *for_init, *for_test, *for_inc, *for_loop, *for_end;
struct ael_priority *while_test, *while_loop, *while_end;
struct ael_priority *switch_test, *switch_end, *fall_thru, *switch_empty;
struct ael_priority *switch_set, *switch_test, *switch_end, *fall_thru, *switch_empty;
struct ael_priority *if_test, *if_end, *if_skip, *if_false;
#ifdef OLD_RAND_ACTION
struct ael_priority *rand_test, *rand_end, *rand_skip;
@@ -3066,7 +3095,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
remove_spaces_before_equals(buf1);
pr->appargs = strdup(buf1);
pr->origin = p;
linkprio(exten, pr);
linkprio(exten, pr, mother_exten);
break;
case PV_LOCALVARDEC:
@@ -3077,7 +3106,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
remove_spaces_before_equals(buf1);
pr->appargs = strdup(buf1);
pr->origin = p;
linkprio(exten, pr);
linkprio(exten, pr, mother_exten);
break;
case PV_GOTO:
@@ -3109,7 +3138,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
pr->appargs = strdup(buf1);
}
pr->origin = p;
linkprio(exten, pr);
linkprio(exten, pr, mother_exten);
break;
case PV_LABEL:
@@ -3117,7 +3146,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
pr->type = AEL_LABEL;
pr->origin = p;
p->u3.compiled_label = exten;
linkprio(exten, pr);
linkprio(exten, pr, mother_exten);
break;
case PV_FOR:
@@ -3240,8 +3269,8 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
for_end->app = strdup("NoOp");
for_end->appargs = strdup(buf1);
/* link & load! */
linkprio(exten, for_init);
linkprio(exten, for_test);
linkprio(exten, for_init, mother_exten);
linkprio(exten, for_test, mother_exten);
/* now, put the body of the for loop here */
exten->loop_break = for_end;
@@ -3249,9 +3278,9 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
gen_prios(exten, new_label, p->u4.for_statements, mother_exten, this_context); /* this will link in all the statements here */
linkprio(exten, for_inc);
linkprio(exten, for_loop);
linkprio(exten, for_end);
linkprio(exten, for_inc, mother_exten);
linkprio(exten, for_loop, mother_exten);
linkprio(exten, for_end, mother_exten);
exten->loop_break = loop_break_save;
@@ -3279,7 +3308,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
while_end->app = strdup("NoOp");
while_end->appargs = strdup(buf1);
linkprio(exten, while_test);
linkprio(exten, while_test, mother_exten);
/* now, put the body of the for loop here */
exten->loop_break = while_end;
@@ -3287,8 +3316,8 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
gen_prios(exten, new_label, p->u2.statements, mother_exten, this_context); /* this will link in all the while body statements here */
linkprio(exten, while_loop);
linkprio(exten, while_end);
linkprio(exten, while_loop, mother_exten);
linkprio(exten, while_end, mother_exten);
exten->loop_break = loop_break_save;
@@ -3302,7 +3331,21 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
loop_break_save = exten->loop_break; /* save them, then restore before leaving */
loop_continue_save = exten->loop_continue;
snprintf(new_label,sizeof(new_label),"sw-%s-%d", label, control_statement_count);
if ((mother_exten && !mother_exten->has_switch)) {
switch_set = new_prio();
switch_set->type = AEL_APPCALL;
switch_set->app = strdup("Set");
switch_set->appargs = strdup("~~EXTEN~~=${EXTEN}");
linkprio(exten, switch_set, mother_exten);
mother_exten->has_switch = 1;
} else if ((exten && !exten->has_switch)) {
switch_set = new_prio();
switch_set->type = AEL_APPCALL;
switch_set->app = strdup("Set");
switch_set->appargs = strdup("~~EXTEN~~=${EXTEN}");
linkprio(exten, switch_set, exten);
exten->has_switch = 1;
}
switch_test = new_prio();
switch_end = new_prio();
switch_test->type = AEL_APPCALL;
@@ -3316,8 +3359,8 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
switch_end->origin = p;
switch_end->exten = exten;
linkprio(exten, switch_test);
linkprio(exten, switch_end);
linkprio(exten, switch_test, mother_exten);
linkprio(exten, switch_end, mother_exten);
exten->loop_break = switch_end;
exten->loop_continue = 0;
@@ -3355,7 +3398,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
fall_thru->app = strdup("Goto");
snprintf(buf1,sizeof(buf1),"sw-%d-%s,10",local_control_statement_count, p2->next->u1.str);
fall_thru->appargs = strdup(buf1);
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
} else if (p2->next && p2->next->type == PV_PATTERN) {
fall_thru = new_prio();
fall_thru->type = AEL_APPCALL;
@@ -3363,20 +3406,20 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
gen_match_to_pattern(p2->next->u1.str, buf2);
snprintf(buf1,sizeof(buf1),"sw-%d-%s,10", local_control_statement_count, buf2);
fall_thru->appargs = strdup(buf1);
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
} else if (p2->next && p2->next->type == PV_DEFAULT) {
fall_thru = new_prio();
fall_thru->type = AEL_APPCALL;
fall_thru->app = strdup("Goto");
snprintf(buf1,sizeof(buf1),"sw-%d-.,10",local_control_statement_count);
fall_thru->appargs = strdup(buf1);
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
} else if (!p2->next) {
fall_thru = new_prio();
fall_thru->type = AEL_CONTROL1;
fall_thru->goto_true = switch_end;
fall_thru->app = strdup("Goto");
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
}
}
if (switch_case->return_needed) { /* returns don't generate a goto eoe (end of extension) any more, just a Return() app call) */
@@ -3386,7 +3429,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
np2->app = strdup("NoOp");
snprintf(buf,sizeof(buf),"End of Extension %s", switch_case->name);
np2->appargs = strdup(buf);
linkprio(switch_case, np2);
linkprio(switch_case, np2, mother_exten);
switch_case-> return_target = np2;
}
} else if (p2->type == PV_PATTERN) {
@@ -3418,7 +3461,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
fall_thru->app = strdup("Goto");
snprintf(buf1,sizeof(buf1),"sw-%d-%s,10",local_control_statement_count, p2->next->u1.str);
fall_thru->appargs = strdup(buf1);
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
} else if (p2->next && p2->next->type == PV_PATTERN) {
fall_thru = new_prio();
fall_thru->type = AEL_APPCALL;
@@ -3426,20 +3469,20 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
gen_match_to_pattern(p2->next->u1.str, buf2);
snprintf(buf1,sizeof(buf1),"sw-%d-%s,10",local_control_statement_count, buf2);
fall_thru->appargs = strdup(buf1);
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
} else if (p2->next && p2->next->type == PV_DEFAULT) {
fall_thru = new_prio();
fall_thru->type = AEL_APPCALL;
fall_thru->app = strdup("Goto");
snprintf(buf1,sizeof(buf1),"sw-%d-.,10",local_control_statement_count);
fall_thru->appargs = strdup(buf1);
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
} else if (!p2->next) {
fall_thru = new_prio();
fall_thru->type = AEL_CONTROL1;
fall_thru->goto_true = switch_end;
fall_thru->app = strdup("Goto");
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
}
}
if (switch_case->return_needed) { /* returns don't generate a goto eoe (end of extension) any more, just a Return() app call) */
@@ -3449,7 +3492,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
np2->app = strdup("NoOp");
snprintf(buf,sizeof(buf),"End of Extension %s", switch_case->name);
np2->appargs = strdup(buf);
linkprio(switch_case, np2);
linkprio(switch_case, np2, mother_exten);
switch_case-> return_target = np2;
}
} else if (p2->type == PV_DEFAULT) {
@@ -3470,7 +3513,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
snprintf(buf1,sizeof(buf1),"sw-%d-.|10",local_control_statement_count);
switch_empty->app = strdup("Goto");
switch_empty->appargs = strdup(buf1);
linkprio(switch_null, switch_empty);
linkprio(switch_null, switch_empty, mother_exten);
snprintf(buf1,sizeof(buf1),"sw-%d-", local_control_statement_count);
switch_null->name = strdup(buf1);
switch_null->loop_break = exten->loop_break;
@@ -3502,7 +3545,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
fall_thru->app = strdup("Goto");
snprintf(buf1,sizeof(buf1),"sw-%d-%s,10",local_control_statement_count, p2->next->u1.str);
fall_thru->appargs = strdup(buf1);
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
} else if (p2->next && p2->next->type == PV_PATTERN) {
fall_thru = new_prio();
fall_thru->type = AEL_APPCALL;
@@ -3510,20 +3553,20 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
gen_match_to_pattern(p2->next->u1.str, buf2);
snprintf(buf1,sizeof(buf1),"sw-%d-%s,10",local_control_statement_count, buf2);
fall_thru->appargs = strdup(buf1);
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
} else if (p2->next && p2->next->type == PV_DEFAULT) {
fall_thru = new_prio();
fall_thru->type = AEL_APPCALL;
fall_thru->app = strdup("Goto");
snprintf(buf1,sizeof(buf1),"sw-%d-.,10",local_control_statement_count);
fall_thru->appargs = strdup(buf1);
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
} else if (!p2->next) {
fall_thru = new_prio();
fall_thru->type = AEL_CONTROL1;
fall_thru->goto_true = switch_end;
fall_thru->app = strdup("Goto");
linkprio(switch_case, fall_thru);
linkprio(switch_case, fall_thru, mother_exten);
}
}
if (switch_case->return_needed) { /* returns don't generate a goto eoe (end of extension) any more, just a Return() app call) */
@@ -3533,7 +3576,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
np2->app = strdup("NoOp");
snprintf(buf,sizeof(buf),"End of Extension %s", switch_case->name);
np2->appargs = strdup(buf);
linkprio(switch_case, np2);
linkprio(switch_case, np2, mother_exten);
switch_case-> return_target = np2;
}
} else {
@@ -3568,7 +3611,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
pr->app = strdup("Gosub");
pr->appargs = strdup(buf1);
pr->origin = p;
linkprio(exten, pr);
linkprio(exten, pr, mother_exten);
break;
case PV_APPLICATION_CALL:
@@ -3583,7 +3626,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
pr->app = strdup(p->u1.str);
pr->appargs = strdup(buf1);
pr->origin = p;
linkprio(exten, pr);
linkprio(exten, pr, mother_exten);
break;
case PV_BREAK:
@@ -3591,7 +3634,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
pr->type = AEL_CONTROL1; /* simple goto */
pr->goto_true = exten->loop_break;
pr->origin = p;
linkprio(exten, pr);
linkprio(exten, pr, mother_exten);
break;
case PV_RETURN: /* hmmmm */
@@ -3601,7 +3644,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
pr->app = strdup("Return");
pr->appargs = strdup("");
pr->origin = p;
linkprio(exten, pr);
linkprio(exten, pr, mother_exten);
break;
case PV_CONTINUE:
@@ -3609,7 +3652,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
pr->type = AEL_CONTROL1; /* simple goto */
pr->goto_true = exten->loop_continue;
pr->origin = p;
linkprio(exten, pr);
linkprio(exten, pr, mother_exten);
break;
case PV_IFTIME:
@@ -3654,20 +3697,20 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
}
/* link & load! */
linkprio(exten, if_test);
linkprio(exten, if_false);
linkprio(exten, if_test, mother_exten);
linkprio(exten, if_false, mother_exten);
/* now, put the body of the if here */
gen_prios(exten, new_label, p->u2.statements, mother_exten, this_context); /* this will link in all the statements here */
if (p->u3.else_statements) {
linkprio(exten, if_skip);
linkprio(exten, if_skip, mother_exten);
gen_prios(exten, new_label, p->u3.else_statements, mother_exten, this_context); /* this will link in all the statements here */
}
linkprio(exten, if_end);
linkprio(exten, if_end, mother_exten);
break;
@@ -3702,19 +3745,19 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
}
/* link & load! */
linkprio(exten, if_test);
linkprio(exten, if_test, mother_exten);
/* now, put the body of the if here */
gen_prios(exten, new_label, p->u2.statements, mother_exten, this_context); /* this will link in all the statements here */
if (p->u3.else_statements) {
linkprio(exten, if_skip);
linkprio(exten, if_skip, mother_exten);
gen_prios(exten, new_label, p->u3.else_statements, mother_exten, this_context); /* this will link in all the statements here */
}
linkprio(exten, if_end);
linkprio(exten, if_end, mother_exten);
break;
@@ -3740,7 +3783,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
np2->app = strdup("NoOp");
snprintf(buf,sizeof(buf),"End of Extension %s", switch_case->name);
np2->appargs = strdup(buf);
linkprio(switch_case, np2);
linkprio(switch_case, np2, mother_exten);
switch_case-> return_target = np2;
}
@@ -4008,7 +4051,7 @@ void ast_compile_ael2(struct ast_context **local_contexts, struct ast_hashtab *l
snprintf(buf,sizeof(buf),"LOCAL(%s)=${ARG%d}", lp->u1.str, argc++);
remove_spaces_before_equals(buf);
np2->appargs = strdup(buf);
linkprio(exten, np2);
linkprio(exten, np2, NULL);
}
/* CONTAINS APPCALLS, CATCH, just like extensions... */
@@ -4019,7 +4062,7 @@ void ast_compile_ael2(struct ast_context **local_contexts, struct ast_hashtab *l
np2->app = strdup("NoOp");
snprintf(buf,sizeof(buf),"End of Macro %s-%s",p->u1.str, exten->name);
np2->appargs = strdup(buf);
linkprio(exten, np2);
linkprio(exten, np2, NULL);
exten-> return_target = np2;
}
@@ -4061,7 +4104,7 @@ void ast_compile_ael2(struct ast_context **local_contexts, struct ast_hashtab *l
np2->app = strdup("NoOp");
snprintf(buf,sizeof(buf),"End of Extension %s", exten->name);
np2->appargs = strdup(buf);
linkprio(exten, np2);
linkprio(exten, np2, NULL);
exten-> return_target = np2;
}
/* is the last priority in the extension a label? Then add a trailing no-op */
@@ -4077,7 +4120,7 @@ void ast_compile_ael2(struct ast_context **local_contexts, struct ast_hashtab *l
np2->app = strdup("NoOp");
snprintf(buf,sizeof(buf),"A NoOp to follow a trailing label %s", exten->plist_last->origin->u1.str);
np2->appargs = strdup(buf);
linkprio(exten, np2);
linkprio(exten, np2, NULL);
}
set_priorities(exten);