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This commit is contained in:
Oswald Buddenhagen 2021-12-08 13:55:33 +01:00
parent 6061de0ba6
commit 156e9c5058
5 changed files with 25 additions and 16 deletions
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8
src/config.c
View file

@ -258,12 +258,14 @@ merge_ops( int cops, int ops[] )
aops = ops[F] | ops[N];
if (ops[F] & XOP_HAVE_TYPE) {
if (aops & OP_MASK_TYPE) {
if (aops & cops & OP_MASK_TYPE) {
if (aops & OP_MASK_TYPE) { // PullNew, etc.
if (aops & cops & OP_MASK_TYPE) { // Overlapping New, etc.
cfl:
error( "Conflicting Sync args specified.\n" );
return 1;
}
// Mix in non-overlapping Push/Pull or New, etc.
// Do the ops first, so e.g. PullNew Push Flags will error out.
ops[F] |= cops & OP_MASK_TYPE;
ops[N] |= cops & OP_MASK_TYPE;
if (cops & XOP_PULL) {
@ -276,7 +278,7 @@ merge_ops( int cops, int ops[] )
goto cfl;
ops[F] |= OP_MASK_TYPE;
}
} else if (cops & (OP_MASK_TYPE|XOP_MASK_DIR)) {
} else if (cops & (OP_MASK_TYPE | XOP_MASK_DIR)) { // Pull New, etc.
if (!(cops & OP_MASK_TYPE))
cops |= OP_MASK_TYPE;
else if (!(cops & XOP_MASK_DIR))

6
src/driver.h
View file

@ -107,7 +107,7 @@ typedef struct {
#define DRV_BOX_BAD 2
/* Failed to connect store. */
#define DRV_STORE_BAD 3
/* The command has been cancel()ed or cancel_store()d. */
/* The command has been cancel_cmds()d or cancel_store()d. */
#define DRV_CANCELED 4
/* All memory belongs to the driver's user, unless stated otherwise. */
@ -241,8 +241,8 @@ struct driver {
/* Add/remove the named flags to/from the given message. The message may be either
* a pre-fetched one (in which case the in-memory representation is updated),
* or it may be identifed by UID only. The operation may be delayed until commit()
* is called. */
* or it may be identifed by UID only.
* The operation may be delayed until commit_cmds() is called. */
void (*set_msg_flags)( store_t *ctx, message_t *msg, uint uid, int add, int del,
void (*cb)( int sts, void *aux ), void *aux );

7
src/drv_imap.c
View file

@ -135,7 +135,7 @@ union imap_store {
enum { GreetingPending = 0, GreetingBad, GreetingOk, GreetingPreauth } greeting;
int expectBYE; // LOGOUT is in progress
int expectEOF; // received LOGOUT's OK or unsolicited BYE
int canceling; // imap_cancel() is in progress
int canceling; // imap_cancel_cmds() is in progress
union {
void (*imap_open)( int sts, void *aux );
void (*imap_cancel)( void *aux );
@ -1712,7 +1712,7 @@ imap_socket_read( void *aux )
continue;
}
resp = RESP_NO;
if (cmdp->param.failok)
if (cmdp->param.failok) // SELECT
goto doresp;
} else /*if (!strcmp( "BAD", arg ))*/
resp = RESP_CANCEL;
@ -3164,6 +3164,7 @@ imap_close_box( store_t *gctx,
} else {
/* This is inherently racy: it may cause messages which other clients
* marked as deleted to be expunged without being trashed. */
// Note that, to save bandwidth, we don't use EXPUNGE.
imap_cmd_simple_t *cmd;
INIT_IMAP_CMD(imap_cmd_simple_t, cmd, cb, aux)
imap_exec( ctx, &cmd->gen, imap_done_simple_box, "CLOSE" );
@ -3289,7 +3290,7 @@ imap_find_new_msgs( store_t *gctx, uint newuid,
INIT_IMAP_CMD(imap_cmd_find_new_t, cmd, cb, aux)
cmd->out_msgs = ctx->msgapp;
cmd->uid = newuid;
// Some servers fail to enumerate recently STOREd messages without syncing first.
// Some servers fail to enumerate recently APPENDed messages without syncing first.
imap_exec( ctx, &cmd->gen, imap_find_new_msgs_p2, "CHECK" );
}

18
src/sync.c
View file

@ -573,7 +573,7 @@ msg_fetched( int sts, void *aux )
case DRV_MSG_BAD:
vars->cb( SYNC_NOGOOD, 0, vars );
break;
default:
default: // DRV_BOX_BAD
vars->cb( SYNC_FAIL, 0, vars );
break;
}
@ -599,7 +599,7 @@ msg_stored( int sts, uint uid, void *aux )
str_fn[t], vars->msg->uid, str_fn[1-t] );
vars->cb( SYNC_NOGOOD, 0, vars );
break;
default:
default: // DRV_BOX_BAD
vars->cb( SYNC_FAIL, 0, vars );
break;
}
@ -1094,7 +1094,7 @@ load_state( sync_vars_t *svars )
case '*':
debug( "flags now %u\n", t3 );
srec->flags = (uchar)t3;
srec->aflags[F] = srec->aflags[N] = 0;
srec->aflags[F] = srec->aflags[N] = 0; // Clear F_DELETED from purge
srec->wstate &= ~W_PURGE;
break;
case '~':
@ -1413,6 +1413,11 @@ box_opened2( sync_vars_t *svars, int t )
opts[t] |= OPEN_NEW|OPEN_FLAGS;
}
}
// While only new messages can cause expiration due to displacement,
// updating flags can cause expiration of already overdue messages.
// The latter would also apply when the expired box is the source,
// but it's more natural to treat it as read-only in that case.
// OP_RENEW makes sense only for legacy S_SKIPPED entries.
if ((chan->ops[N] & (OP_NEW|OP_RENEW|OP_FLAGS)) && chan->max_messages)
opts[N] |= OPEN_OLD|OPEN_NEW|OPEN_FLAGS;
if (svars->replayed)
@ -1769,7 +1774,7 @@ box_loaded( int sts, message_t *msgs, int total_msgs, int recent_msgs, void *aux
any_new[t] = 1;
}
}
srec = nsrec;
srec = nsrec; // Minor optimization: skip freshly created placeholder entry.
}
}
@ -1987,7 +1992,8 @@ box_loaded( int sts, message_t *msgs, int total_msgs, int recent_msgs, void *aux
} else {
/* The trigger is an expiration transaction being ongoing ... */
if ((t == N) && ((shifted_bit(srec->status, S_EXPIRE, S_EXPIRED) ^ srec->status) & S_EXPIRED)) {
/* ... but the actual action derives from the wanted state. */
// ... but the actual action derives from the wanted state -
// so that canceled transactions are rolled back as well.
if (srec->wstate & W_NEXPIRE)
aflags |= F_DELETED;
else
@ -2377,7 +2383,7 @@ box_closed_p2( sync_vars_t *svars, int t )
for (t = 0; t < 2; t++) {
// Committing maxuid is delayed until all messages were propagated, to
// ensure that all pending messages are still loaded next time in case
// of interruption - in particular skipping big messages would otherwise
// of interruption - in particular skipping messages would otherwise
// up the limit too early.
if (svars->maxuid[t] != svars->oldmaxuid[t])
JLOG( "N %d %u", (t, svars->maxuid[t]), "up maxuid of %s", str_fn[t] );

2
src/sync.h
View file

@ -24,7 +24,7 @@
#define XOP_PUSH (1<<8)
#define XOP_PULL (1<<9)
#define XOP_MASK_DIR (XOP_PUSH|XOP_PULL)
#define XOP_HAVE_TYPE (1<<10)
#define XOP_HAVE_TYPE (1<<10) // Aka mode; at least one of dir and type
// The following must all have the same bit shift from the corresponding OP_* flags.
#define XOP_HAVE_EXPUNGE (1<<11)
#define XOP_HAVE_CREATE (1<<12)