commit 338628520543da79fbb8d78851e08a565e45357a
parent a3bd10c04da4cd392bdfc422fce08af714650731
Author: Oswald Buddenhagen <ossi@users.sf.net>
Date: Tue, 3 May 2011 09:42:27 +0200
make maildir uidvalidity change fatal
it's best to give the user a chance to fix it rather than completely
messing up the syncstate by re-enumerating the UIDs.
Diffstat:
1 file changed, 16 insertions(+), 0 deletions(-)
diff --git a/src/drv_maildir.c b/src/drv_maildir.c
@@ -399,6 +399,15 @@ maildir_uidval_lock( maildir_store_t *ctx )
lseek( ctx->uvfd, 0, SEEK_SET );
if ((n = read( ctx->uvfd, buf, sizeof(buf) )) <= 0 ||
(buf[n] = 0, sscanf( buf, "%d\n%d", &ctx->gen.uidvalidity, &ctx->nuid ) != 2)) {
+#if 1
+ /* In a generic driver, resetting the UID validity would be the right thing.
+ * But this would mess up the sync state completely. So better bail out and
+ * give the user a chance to fix the mailbox. */
+ if (n) {
+ error( "Maildir error: cannot read UIDVALIDITY.\n" );
+ return DRV_BOX_BAD;
+ }
+#endif
return maildir_init_uid_new( ctx );
} else
ctx->uvok = 1;
@@ -624,6 +633,12 @@ maildir_scan( maildir_store_t *ctx, msglist_t *msglist )
entry = &msglist->ents[i];
if (entry->uid != INT_MAX) {
if (uid == entry->uid) {
+#if 1
+ /* See comment in maildir_uidval_lock() why this is fatal. */
+ error( "Maildir error: duplicate UID %d.\n", uid );
+ maildir_free_scan( msglist );
+ return DRV_BOX_BAD;
+#else
info( "Maildir notice: duplicate UID; changing UIDVALIDITY.\n");
if ((ret = maildir_init_uid( ctx )) != DRV_OK) {
maildir_free_scan( msglist );
@@ -631,6 +646,7 @@ maildir_scan( maildir_store_t *ctx, msglist_t *msglist )
}
maildir_free_scan( msglist );
goto again;
+#endif
}
uid = entry->uid;
if ((ctx->gen.opts & OPEN_SIZE) || ((ctx->gen.opts & OPEN_FIND) && uid >= ctx->newuid))