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/* Copyright (c) 2007-2018 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "array.h"
#include "index-storage.h"
#include "index-sync-changes.h"
struct index_sync_changes_context {
struct mail_index_sync_ctx *index_sync_ctx;
struct mail_index_view *sync_view;
struct mail_index_transaction *sync_trans;
ARRAY(struct mail_index_sync_rec) syncs;
struct mail_index_sync_rec sync_rec;
bool dirty_flag_updates;
};
struct index_sync_changes_context *
index_sync_changes_init(struct mail_index_sync_ctx *index_sync_ctx,
struct mail_index_view *sync_view,
struct mail_index_transaction *sync_trans,
bool dirty_flag_updates)
{
struct index_sync_changes_context *ctx;
ctx = i_new(struct index_sync_changes_context, 1);
ctx->index_sync_ctx = index_sync_ctx;
ctx->sync_view = sync_view;
ctx->sync_trans = sync_trans;
ctx->dirty_flag_updates = dirty_flag_updates;
i_array_init(&ctx->syncs, 16);
return ctx;
}
void index_sync_changes_deinit(struct index_sync_changes_context **_ctx)
{
struct index_sync_changes_context *ctx = *_ctx;
*_ctx = NULL;
array_free(&ctx->syncs);
i_free(ctx);
}
void index_sync_changes_reset(struct index_sync_changes_context *ctx)
{
array_clear(&ctx->syncs);
i_zero(&ctx->sync_rec);
}
void index_sync_changes_delete_to(struct index_sync_changes_context *ctx,
uint32_t last_uid)
{
struct mail_index_sync_rec *syncs;
unsigned int src, dest, count;
syncs = array_get_modifiable(&ctx->syncs, &count);
for (src = dest = 0; src < count; src++) {
i_assert(last_uid >= syncs[src].uid1);
if (last_uid <= syncs[src].uid2) {
/* keep it */
if (src != dest)
syncs[dest] = syncs[src];
dest++;
}
}
array_delete(&ctx->syncs, dest, count - dest);
}
static bool
index_sync_changes_have_expunges(struct index_sync_changes_context *ctx,
unsigned int count,
guid_128_t expunged_guid_128_r)
{
const struct mail_index_sync_rec *syncs;
unsigned int i;
syncs = array_front(&ctx->syncs);
for (i = 0; i < count; i++) {
if (syncs[i].type == MAIL_INDEX_SYNC_TYPE_EXPUNGE) {
memcpy(expunged_guid_128_r, syncs[i].guid_128,
GUID_128_SIZE);
return TRUE;
}
}
return FALSE;
}
void index_sync_changes_read(struct index_sync_changes_context *ctx,
uint32_t uid, bool *sync_expunge_r,
guid_128_t expunged_guid_128_r)
{
struct mail_index_sync_rec *sync_rec = &ctx->sync_rec;
uint32_t seq1, seq2;
unsigned int orig_count;
*sync_expunge_r = FALSE;
index_sync_changes_delete_to(ctx, uid);
orig_count = array_count(&ctx->syncs);
while (uid >= sync_rec->uid1) {
if (uid <= sync_rec->uid2) {
array_push_back(&ctx->syncs, sync_rec);
if (sync_rec->type == MAIL_INDEX_SYNC_TYPE_EXPUNGE) {
*sync_expunge_r = TRUE;
memcpy(expunged_guid_128_r, sync_rec->guid_128,
GUID_128_SIZE);
}
}
if (!mail_index_sync_next(ctx->index_sync_ctx, sync_rec)) {
i_zero(sync_rec);
break;
}
switch (sync_rec->type) {
case MAIL_INDEX_SYNC_TYPE_EXPUNGE:
break;
case MAIL_INDEX_SYNC_TYPE_FLAGS:
case MAIL_INDEX_SYNC_TYPE_KEYWORD_ADD:
case MAIL_INDEX_SYNC_TYPE_KEYWORD_REMOVE:
if (!ctx->dirty_flag_updates)
break;
/* mark the changes as dirty */
(void)mail_index_lookup_seq_range(ctx->sync_view,
sync_rec->uid1,
sync_rec->uid2,
&seq1, &seq2);
i_zero(sync_rec);
if (seq1 == 0)
break;
mail_index_update_flags_range(ctx->sync_trans,
seq1, seq2, MODIFY_ADD,
(enum mail_flags)MAIL_INDEX_MAIL_FLAG_DIRTY);
break;
}
}
if (!*sync_expunge_r && orig_count > 0) {
*sync_expunge_r =
index_sync_changes_have_expunges(ctx, orig_count,
expunged_guid_128_r);
}
}
bool index_sync_changes_have(struct index_sync_changes_context *ctx)
{
return array_count(&ctx->syncs) > 0;
}
uint32_t
index_sync_changes_get_next_uid(struct index_sync_changes_context *ctx)
{
return ctx->sync_rec.uid1;
}
void index_sync_changes_apply(struct index_sync_changes_context *ctx,
pool_t pool, uint8_t *flags,
ARRAY_TYPE(keyword_indexes) *keywords,
enum mail_index_sync_type *sync_type_r)
{
const struct mail_index_sync_rec *syncs;
unsigned int i, count;
enum mail_index_sync_type sync_type = 0;
syncs = array_get(&ctx->syncs, &count);
for (i = 0; i < count; i++) {
switch (syncs[i].type) {
case MAIL_INDEX_SYNC_TYPE_FLAGS:
mail_index_sync_flags_apply(&syncs[i], flags);
sync_type |= MAIL_INDEX_SYNC_TYPE_FLAGS;
break;
case MAIL_INDEX_SYNC_TYPE_KEYWORD_ADD:
case MAIL_INDEX_SYNC_TYPE_KEYWORD_REMOVE:
if (!array_is_created(keywords)) {
/* no existing keywords */
if (syncs[i].type !=
MAIL_INDEX_SYNC_TYPE_KEYWORD_ADD)
break;
/* adding, create the array */
p_array_init(keywords, pool,
I_MIN(10, count - i));
}
if (mail_index_sync_keywords_apply(&syncs[i], keywords))
sync_type |= syncs[i].type;
break;
default:
break;
}
}
*sync_type_r = sync_type;
}
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