pop3c: Return error instead of crashing when trying to save a mail.

diff --git a/src/lib-storage/index/pop3c/pop3c-storage.c b/src/lib-storage/index/pop3c/pop3c-storage.c
index 582efbdde4138dc5034b1c7c47f0ac45b9c8b20b..c3d4d97aecd54b2a496665d921f3f175cde081c0 100644 (file)
--- a/src/lib-storage/index/pop3c/pop3c-storage.c
+++ b/src/lib-storage/index/pop3c/pop3c-storage.c
@@ -234,6 +234,40 @@ static void pop3c_notify_changes(struct mailbox *box ATTR_UNUSED)
 {
 }
 
+static struct mail_save_context *
+pop3c_save_alloc(struct mailbox_transaction_context *t)
+{
+       struct mail_save_context *ctx;
+
+       ctx = i_new(struct mail_save_context, 1);
+       ctx->transaction = t;
+       return ctx;
+}
+
+static int
+pop3c_save_begin(struct mail_save_context *ctx ATTR_UNUSED,
+                struct istream *input ATTR_UNUSED)
+{
+       mail_storage_set_error(ctx->transaction->box->storage,
+               MAIL_ERROR_NOTPOSSIBLE, "POP3 doesn't support saving mails");
+       return -1;
+}
+
+static int pop3c_save_continue(struct mail_save_context *ctx ATTR_UNUSED)
+{
+       return -1;
+}
+
+static int pop3c_save_finish(struct mail_save_context *ctx ATTR_UNUSED)
+{
+       return -1;
+}
+
+static void
+pop3c_save_cancel(struct mail_save_context *ctx ATTR_UNUSED)
+{
+}
+
 static bool pop3c_storage_is_inconsistent(struct mailbox *box)
 {
        struct pop3c_mailbox *mbox = (struct pop3c_mailbox *)box;
@@ -295,11 +329,11 @@ struct mailbox pop3c_mailbox = {
                index_storage_search_deinit,
                index_storage_search_next_nonblock,
                index_storage_search_next_update_seq,
-               NULL,
-               NULL,
-               NULL,
-               NULL,
-               NULL,
+               pop3c_save_alloc,
+               pop3c_save_begin,
+               pop3c_save_continue,
+               pop3c_save_finish,
+               pop3c_save_cancel,
                mail_storage_copy,
                NULL,
                NULL,