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raw | patch | inline | side by side (parent: 7fbcd15)
(closes issue #12302)
authorSteve Murphy <murf@digium.com>
Thu, 27 Mar 2008 03:21:05 +0000 (03:21 +0000)
committerSteve Murphy <murf@digium.com>
Thu, 27 Mar 2008 03:21:05 +0000 (03:21 +0000)
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/branches/1.4@111341 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/ael_structs.h patch | blob | blame | history
pbx/pbx_ael.c patch | blob | blame | history

diff --git a/include/asterisk/ael_structs.h b/include/asterisk/ael_structs.h
index 8b428d33f747e61b1996484f5962a563025efdf6..01a4244e1f080c96c98997bc1a1ab0a0cd809c36 100644 (file)
--- a/include/asterisk/ael_structs.h
+++ b/include/asterisk/ael_structs.h
@@ -178,6 +178,7 @@ struct ael_extension
        char *hints;
        int regexten;
        int is_switch;
+       int has_switch;
        
        struct ast_context *context;
        
diff --git a/pbx/pbx_ael.c b/pbx/pbx_ael.c
index 2af624c4f78ff2d2ea69f9ecff15fcb1e5d7d1a5..bc0eeca2fb42a55bc032f64b1b1c84798bdf781b 100644 (file)
--- a/pbx/pbx_ael.c
+++ b/pbx/pbx_ael.c
@@ -97,7 +97,7 @@ struct pval *find_context(char *name);
 struct pval *find_macro(char *name);
 struct ael_priority *new_prio(void);
 struct ael_extension *new_exten(void);
-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);
 void destroy_extensions(struct ael_extension *exten);
 static void linkexten(struct ael_extension *exten, struct ael_extension *add);
 static void gen_prios(struct ael_extension *exten, char *label, pval *statement, struct ael_extension *mother_exten, struct ast_context *context );
@@ -2776,8 +2776,10 @@ 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;
@@ -2787,6 +2789,33 @@ 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)
@@ -2897,7 +2926,7 @@ 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;
@@ -2922,7 +2951,7 @@ 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:
@@ -2954,7 +2983,7 @@ 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:
@@ -2962,7 +2991,7 @@ 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:
@@ -3091,8 +3120,8 @@ 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;
@@ -3100,9 +3129,9 @@ 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;
@@ -3130,7 +3159,7 @@ 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;
@@ -3138,8 +3167,8 @@ 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;
@@ -3153,7 +3182,21 @@ 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;
@@ -3170,8 +3213,8 @@ 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;
@@ -3215,7 +3258,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
                                                        substitute_commas(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_PATTERN) {
                                                        fall_thru = new_prio();
                                                        fall_thru->type = AEL_APPCALL;
@@ -3224,20 +3267,20 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
                                                        substitute_commas(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) {
@@ -3247,7 +3290,7 @@ 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) {
@@ -3285,7 +3328,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
                                                        substitute_commas(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_PATTERN) {
                                                        fall_thru = new_prio();
                                                        fall_thru->type = AEL_APPCALL;
@@ -3294,20 +3337,20 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
                                                        substitute_commas(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) {
@@ -3317,7 +3360,7 @@ 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) {
@@ -3338,7 +3381,7 @@ 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;
@@ -3373,7 +3416,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
                                                        substitute_commas(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_PATTERN) {
                                                        fall_thru = new_prio();
                                                        fall_thru->type = AEL_APPCALL;
@@ -3382,20 +3425,20 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
                                                        substitute_commas(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) {
@@ -3405,7 +3448,7 @@ 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 {
@@ -3430,7 +3473,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
                        pr->app = strdup("Macro");
                        pr->appargs = strdup(buf1);
                        pr->origin = p;
-                       linkprio(exten, pr);
+                       linkprio(exten, pr, mother_exten);
                        break;
 
                case PV_APPLICATION_CALL:
@@ -3446,7 +3489,7 @@ 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:
@@ -3454,7 +3497,7 @@ 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 */
@@ -3464,7 +3507,7 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
                        pr->app = strdup("Goto");
                        pr->appargs = strdup("");
                        pr->origin = p;
-                       linkprio(exten, pr);
+                       linkprio(exten, pr, mother_exten);
                        break;
 
                case PV_CONTINUE:
@@ -3472,7 +3515,7 @@ 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;
 
 #ifdef OLD_RAND_ACTION
@@ -3500,17 +3543,17 @@ static void gen_prios(struct ael_extension *exten, char *label, pval *statement,
 
                        rand_test->goto_true = rand_skip; /* +1, really */
 
-                       linkprio(exten, rand_test);
+                       linkprio(exten, rand_test, mother_exten);
                        
                        if (p->u3.else_statements) {
                                gen_prios(exten, new_label, p->u3.else_statements, mother_exten, this_context); /* this will link in all the else statements here */
                        }
                        
-                       linkprio(exten, rand_skip);
+                       linkprio(exten, rand_skip, mother_exten);
                        
                        gen_prios(exten, new_label, p->u2.statements, mother_exten, this_context); /* this will link in all the "true" statements here */
 
-                       linkprio(exten, rand_end);
+                       linkprio(exten, rand_end, mother_exten);
                        
                        break;
 #endif                 
@@ -3557,20 +3600,20 @@ 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;
 
@@ -3605,19 +3648,19 @@ 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;
 
@@ -3643,7 +3686,7 @@ 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;
                        }
 
@@ -3913,7 +3956,7 @@ void ast_compile_ael2(struct ast_context **local_contexts, struct pval *root)
                                snprintf(buf,sizeof(buf),"%s=${ARG%d}", lp->u1.str, argc++);
                                remove_spaces_before_equals(buf);
                                np2->appargs = strdup(buf);
-                               linkprio(exten, np2);
+                               linkprio(exten, np2, NULL);
                        }
                        /* add any includes */
                        for (p2=p->u3.macro_statements; p2; p2=p2->next) {
@@ -3946,7 +3989,7 @@ void ast_compile_ael2(struct ast_context **local_contexts, struct pval *root)
                                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;
                        }
                        
@@ -3988,7 +4031,7 @@ void ast_compile_ael2(struct ast_context **local_contexts, struct pval *root)
                                                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 */
@@ -4004,7 +4047,7 @@ void ast_compile_ael2(struct ast_context **local_contexts, struct pval *root)
                                                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);
Mirror of https://github.com/asterisk/asterisk.git