commit e565d08246205e30f2cc7af169a52be14d765898
parent e8caaaaf6594cd25702d9f19744426828cd5a260
Author: Oswald Buddenhagen <ossi@users.sf.net>
Date: Wed, 8 Jan 2020 18:22:48 +0100
don't try to propagate flags the target store does not support
$Forwarded is not standard, so it will most likely fail with mailboxes
that do not support keywords.
amends c4d7f018.
Diffstat:
4 files changed, 64 insertions(+), 2 deletions(-)
diff --git a/src/driver.h b/src/driver.h
@@ -181,6 +181,9 @@ struct driver {
/* Return the minimal UID the next stored message will have. */
int (*get_uidnext)( store_t *ctx );
+ /* Return the flags that can be stored in the selected mailbox. */
+ xint (*get_supported_flags)( store_t *ctx );
+
/* Confirm that the open mailbox is empty. */
int (*confirm_box_empty)( store_t *ctx );
diff --git a/src/drv_imap.c b/src/drv_imap.c
@@ -105,6 +105,7 @@ struct imap_store {
/* trash folder's existence is not confirmed yet */
enum { TrashUnknown, TrashChecking, TrashKnown } trashnc;
uint got_namespace:1;
+ uint has_forwarded:1;
char delimiter[2]; /* hierarchy delimiter */
list_t *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
string_list_t *boxes; // _list results
@@ -1199,6 +1200,27 @@ parse_response_code( imap_store_t *ctx, imap_cmd_t *cmd, char *s )
error( "IMAP error: malformed APPENDUID status\n" );
return RESP_CANCEL;
}
+ } else if (!strcmp( "PERMANENTFLAGS", arg )) {
+ parse_list_init( &ctx->parse_list_sts );
+ if (parse_imap_list( NULL, &s, &ctx->parse_list_sts ) != LIST_OK) {
+ error( "IMAP error: malformed PERMANENTFLAGS status\n" );
+ return RESP_CANCEL;
+ }
+ int ret = RESP_OK;
+ for (list_t *tmp = ctx->parse_list_sts.head->child; tmp; tmp = tmp->next) {
+ if (!is_atom( tmp )) {
+ error( "IMAP error: malformed PERMANENTFLAGS status item\n" );
+ ret = RESP_CANCEL;
+ break;
+ }
+ if (!strcmp( tmp->val, "\\*" ) || !strcmp( tmp->val, "$Forwarded" )) {
+ ctx->has_forwarded = 1;
+ break;
+ }
+ }
+ free_list( ctx->parse_list_sts.head );
+ ctx->parse_list_sts.head = NULL;
+ return ret;
}
return RESP_OK;
}
@@ -2432,6 +2454,14 @@ imap_get_uidnext( store_t *gctx )
return ctx->uidnext;
}
+static xint
+imap_get_supported_flags( store_t *gctx )
+{
+ imap_store_t *ctx = (imap_store_t *)gctx;
+
+ return ctx->has_forwarded ? 255 : (255 & ~F_FORWARDED);
+}
+
/******************* imap_create_box *******************/
static void
@@ -3433,6 +3463,7 @@ struct driver imap_driver = {
imap_create_box,
imap_open_box,
imap_get_uidnext,
+ imap_get_supported_flags,
imap_confirm_box_empty,
imap_delete_box,
imap_finish_delete_box,
diff --git a/src/drv_maildir.c b/src/drv_maildir.c
@@ -1325,6 +1325,12 @@ maildir_get_uidnext( store_t *gctx ATTR_UNUSED )
return 0;
}
+static xint
+maildir_get_supported_flags( store_t *gctx ATTR_UNUSED )
+{
+ return 255;
+}
+
static void
maildir_create_box( store_t *gctx,
void (*cb)( int sts, void *aux ), void *aux )
@@ -1934,6 +1940,7 @@ struct driver maildir_driver = {
maildir_create_box,
maildir_open_box,
maildir_get_uidnext,
+ maildir_get_supported_flags,
maildir_confirm_box_empty,
maildir_delete_box,
maildir_finish_delete_box,
diff --git a/src/sync.c b/src/sync.c
@@ -170,6 +170,7 @@ typedef struct {
uint newuidval[2]; // UID validity obtained from driver
uint newuid[2]; // TUID lookup makes sense only for UIDs >= this
uint mmaxxuid; // highest expired UID on master
+ uchar good_flags[2], bad_flags[2];
} sync_vars_t;
static void sync_ref( sync_vars_t *svars ) { ++svars->ref_count; }
@@ -282,6 +283,24 @@ match_tuids( sync_vars_t *svars, int t, message_t *msgs )
}
+static uchar
+sanitize_flags( uchar tflags, sync_vars_t *svars, int t )
+{
+ if (!(DFlags & QUIET)) {
+ // We complain only once per flag per store - even though _theoretically_
+ // each mailbox can support different flags according to the IMAP spec.
+ uchar bflags = tflags & ~(svars->good_flags[t] | svars->bad_flags[t]);
+ if (bflags) {
+ char bfbuf[16];
+ make_flags( bflags, bfbuf );
+ notice( "Notice: %s does not support flag(s) '%s'; not propagating.\n", str_ms[t], bfbuf );
+ svars->bad_flags[t] |= bflags;
+ }
+ }
+ return tflags & svars->good_flags[t];
+}
+
+
typedef struct copy_vars {
void (*cb)( int sts, uint uid, struct copy_vars *vars );
void *aux;
@@ -421,7 +440,7 @@ msg_fetched( int sts, void *aux )
return;
}
- vars->msg->flags = vars->data.flags;
+ vars->msg->flags = vars->data.flags = sanitize_flags( vars->data.flags, svars, t );
scr = (svars->drv[1-t]->get_caps( svars->ctx[1-t] ) / DRV_CRLF) & 1;
tcr = (svars->drv[t]->get_caps( svars->ctx[t] ) / DRV_CRLF) & 1;
@@ -1490,6 +1509,8 @@ box_loaded( int sts, message_t *msgs, int total_msgs, int recent_msgs, void *aux
}
info( "Synchronizing...\n" );
+ for (t = 0; t < 2; t++)
+ svars->good_flags[t] = (uchar)svars->drv[t]->get_supported_flags( svars->ctx[t] );
debug( "synchronizing old entries\n" );
for (srec = svars->srecs; srec; srec = srec->next) {
@@ -1550,7 +1571,7 @@ box_loaded( int sts, message_t *msgs, int total_msgs, int recent_msgs, void *aux
} else {
// We have a source. The target may be in an unknown state.
if (svars->chan->ops[t] & OP_FLAGS) {
- sflags = srec->msg[1-t]->flags;
+ sflags = sanitize_flags( srec->msg[1-t]->flags, svars, t );
if ((t == M) && (srec->status & (S_EXPIRE|S_EXPIRED))) {
/* Don't propagate deletion resulting from expiration. */
debug( " slave expiring\n" );
