Merged revisions 278261 via svnmerge from

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

........
  r278261 | tilghman | 2010-07-20 17:23:13 -0500 (Tue, 20 Jul 2010) | 7 lines
  
  Delete IMAP messages in reverse order, to ensure reordering after each expunge does not cause deletion of the wrong message.
  
  (closes issue #16350)
   Reported by: noahisaac
   Patches: 
         20100623__issue16350.diff.txt uploaded by tilghman (license 14)
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@278275 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_voicemail.c

@@ -7556,11 +7556,10 @@ static int imap_delete_old_greeting (char *dir, struct vm_state *vms)
 	int i;
 	BODY* body;
 
-	
 	file = strrchr(ast_strdupa(dir), '/');
-	if (file)
+	if (file) {
 		*file++ = '\0';
-	else {
+	} else {
 		ast_log(AST_LOG_ERROR, "Failed to procure file name from directory passed. You should never see this.\n");
 		return -1;
 	}
@@ -7587,8 +7586,7 @@ static int imap_delete_old_greeting (char *dir, struct vm_state *vms)
 	return 0;
 }
 
-#else
+#elif !defined(IMAP_STORAGE)
-#ifndef IMAP_STORAGE
 static int open_mailbox(struct vm_state *vms, struct ast_vm_user *vmu, int box)
 {
 	int count_msg, last_msg;
@@ -7604,10 +7602,11 @@ static int open_mailbox(struct vm_state *vms, struct ast_vm_user *vmu, int box)
 	create_dirpath(vms->curdir, sizeof(vms->curdir), vmu->context, vms->username, vms->curbox);
 
 	count_msg = count_messages(vmu, vms->curdir);
-	if (count_msg < 0)
+	if (count_msg < 0) {
 		return count_msg;
-	else
+	} else {
 		vms->lastmsg = count_msg - 1;
+	}
 
 	/*
 	The following test is needed in case sequencing gets messed up.
@@ -7624,13 +7623,13 @@ static int open_mailbox(struct vm_state *vms, struct ast_vm_user *vmu, int box)
 	last_msg = last_message_index(vmu, vms->curdir);
 	ast_unlock_path(vms->curdir);
 
-	if (last_msg < 0) 
+	if (last_msg < 0) {
 		return last_msg;
+	}
 
 	return 0;
 }
 #endif
-#endif
 
 static int close_mailbox(struct vm_state *vms, struct ast_vm_user *vmu)
 {
@@ -7640,21 +7639,24 @@ static int close_mailbox(struct vm_state *vms, struct ast_vm_user *vmu)
 	char fn2[PATH_MAX];
 #endif
 
-	if (vms->lastmsg <= -1)
+	if (vms->lastmsg <= -1) {
 		goto done;
+	}
 
 	vms->curmsg = -1;
 #ifndef IMAP_STORAGE
 	/* Get the deleted messages fixed */
-	if (vm_lock_path(vms->curdir))
+	if (vm_lock_path(vms->curdir)) {
 		return ERROR_LOCK_PATH;
+	}
 
 	for (x = 0; x < vmu->maxmsg; x++) {
 		if (!vms->deleted[x] && ((strcasecmp(vms->curbox, "INBOX") && strcasecmp(vms->curbox, "Urgent")) || !vms->heard[x] || (vms->heard[x] && !ast_test_flag(vmu, VM_MOVEHEARD)))) {
 			/* Save this message.  It's not in INBOX or hasn't been heard */
 			make_file(vms->fn, sizeof(vms->fn), vms->curdir, x);
-			if (!EXISTS(vms->curdir, x, vms->fn, NULL)) 
+			if (!EXISTS(vms->curdir, x, vms->fn, NULL)) {
 				break;
+			}
 			vms->curmsg++;
 			make_file(fn2, sizeof(fn2), vms->curdir, vms->curmsg);
 			if (strcmp(vms->fn, fn2)) {
@@ -7683,22 +7685,26 @@ static int close_mailbox(struct vm_state *vms, struct ast_vm_user *vmu)
 			/* If realtime storage enabled - we should explicitly delete this message,
 			cause RENAME() will overwrite files, but will keep duplicate records in RT-storage */
 			make_file(vms->fn, sizeof(vms->fn), vms->curdir, x);
-			if (EXISTS(vms->curdir, x, vms->fn, NULL))
+			if (EXISTS(vms->curdir, x, vms->fn, NULL)) {
 				DELETE(vms->curdir, x, vms->fn, vmu);
 			}
 		}
+	}
 
 	/* Delete ALL remaining messages */
 	nummsg = x - 1;
 	for (x = vms->curmsg + 1; x <= nummsg; x++) {
 		make_file(vms->fn, sizeof(vms->fn), vms->curdir, x);
-		if (EXISTS(vms->curdir, x, vms->fn, NULL))
+		if (EXISTS(vms->curdir, x, vms->fn, NULL)) {
 			DELETE(vms->curdir, x, vms->fn, vmu);
 		}
+	}
 	ast_unlock_path(vms->curdir);
-#else
+#else /* defined(IMAP_STORAGE) */
 	if (vms->deleted) {
-		for (x = 0; x < vmu->maxmsg; x++) { 
+		/* Since we now expunge after each delete, deleting in reverse order
+		 * ensures that no reordering occurs between each step. */
+		for (x = vmu->maxmsg - 1; x >= 0; x--) {
 			if (vms->deleted[x]) {
 				ast_debug(3, "IMAP delete of %d\n", x);
 				DELETE(vms->curdir, x, vms->fn, vmu);
@@ -7729,7 +7735,7 @@ static int vm_play_folder_name_gr(struct ast_channel *chan, char *box)
 	int cmd;
 	char *buf;
 
-	buf = alloca(strlen(box)+2); 
+	buf = alloca(strlen(box) + 2);
 	strcpy(buf, box);
 	strcat(buf, "s");