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imap-sieve-storage.c
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imap-sieve-storage.c
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/* Copyright (c) 2016-2018 Pigeonhole authors, see the included COPYING file */
#include "imap-common.h"
#include "array.h"
#include "hash.h"
#include "str.h"
#include "istream.h"
#include "ostream.h"
#include "module-context.h"
#include "mail-user.h"
#include "mail-storage-private.h"
#include "mailbox-attribute.h"
#include "mailbox-list-private.h"
#include "imap-match.h"
#include "imap-util.h"
#include "imap-sieve.h"
#include "imap-sieve-storage.h"
#define MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT "imapsieve/script"
#define MAIL_SERVER_ATTRIBUTE_IMAPSIEVE_SCRIPT "imapsieve/script"
#define IMAP_SIEVE_USER_CONTEXT(obj) \
MODULE_CONTEXT(obj, imap_sieve_user_module)
#define IMAP_SIEVE_USER_CONTEXT_REQUIRE(obj) \
MODULE_CONTEXT_REQUIRE(obj, imap_sieve_user_module)
#define IMAP_SIEVE_CONTEXT(obj) \
MODULE_CONTEXT(obj, imap_sieve_storage_module)
#define IMAP_SIEVE_CONTEXT_REQUIRE(obj) \
MODULE_CONTEXT_REQUIRE(obj, imap_sieve_storage_module)
#define IMAP_SIEVE_MAIL_CONTEXT(obj) \
MODULE_CONTEXT_REQUIRE(obj, imap_sieve_mail_module)
struct imap_sieve_mailbox_rule;
struct imap_sieve_user;
struct imap_sieve_mailbox_event;
struct imap_sieve_mailbox_transaction;
struct imap_sieve_mail;
enum imap_sieve_command {
IMAP_SIEVE_CMD_NONE = 0,
IMAP_SIEVE_CMD_APPEND,
IMAP_SIEVE_CMD_COPY,
IMAP_SIEVE_CMD_MOVE,
IMAP_SIEVE_CMD_STORE,
IMAP_SIEVE_CMD_OTHER
};
ARRAY_DEFINE_TYPE(imap_sieve_mailbox_rule,
struct imap_sieve_mailbox_rule *);
ARRAY_DEFINE_TYPE(imap_sieve_mailbox_event,
struct imap_sieve_mailbox_event);
HASH_TABLE_DEFINE_TYPE(imap_sieve_mailbox_rule,
struct imap_sieve_mailbox_rule *,
struct imap_sieve_mailbox_rule *);
struct imap_sieve_mailbox_rule {
unsigned int index;
const char *mailbox;
const char *from;
const char *const *causes;
const char *before, *after;
const char *copy_source_after;
};
struct imap_sieve_user {
union mail_user_module_context module_ctx;
struct client *client;
struct imap_sieve *isieve;
enum imap_sieve_command cur_cmd;
HASH_TABLE_TYPE(imap_sieve_mailbox_rule) mbox_rules;
ARRAY_TYPE(imap_sieve_mailbox_rule) mbox_patterns;
bool sieve_active:1;
bool user_script:1;
bool expunge_discarded:1;
};
struct imap_sieve_mailbox_event {
uint32_t dest_mail_uid, src_mail_uid;
unsigned int save_seq;
const char *changed_flags;
};
struct imap_sieve_mailbox_transaction {
pool_t pool;
union mailbox_transaction_module_context module_ctx;
struct mailbox *src_box;
struct mailbox_transaction_context *src_mail_trans;
ARRAY_TYPE(imap_sieve_mailbox_event) events;
};
struct imap_sieve_mail {
union mail_module_context module_ctx;
string_t *flags;
};
static MODULE_CONTEXT_DEFINE_INIT(imap_sieve_user_module,
&mail_user_module_register);
static MODULE_CONTEXT_DEFINE_INIT(imap_sieve_storage_module,
&mail_storage_module_register);
static MODULE_CONTEXT_DEFINE_INIT(imap_sieve_mail_module,
&mail_module_register);
static void
imap_sieve_mailbox_rules_get(struct mail_user *user,
struct mailbox *dst_box, struct mailbox *src_box,
const char *cause,
ARRAY_TYPE(imap_sieve_mailbox_rule) *rules);
/*
* Logging
*/
static inline void
imap_sieve_debug(struct mail_user *user,
const char *format, ...) ATTR_FORMAT(2, 3);
static inline void
imap_sieve_debug(struct mail_user *user,
const char *format, ...)
{
va_list args;
if (user->mail_debug) {
va_start(args, format);
i_debug("imapsieve: %s",
t_strdup_vprintf(format, args));
va_end(args);
}
}
static inline void
imap_sieve_warning(struct mail_user *user ATTR_UNUSED,
const char *format, ...) ATTR_FORMAT(2, 3);
static inline void
imap_sieve_warning(struct mail_user *user ATTR_UNUSED,
const char *format, ...)
{
va_list args;
va_start(args, format);
i_warning("imapsieve: %s",
t_strdup_vprintf(format, args));
va_end(args);
}
static inline void
imap_sieve_mailbox_debug(struct mailbox *box,
const char *format, ...) ATTR_FORMAT(2, 3);
static inline void
imap_sieve_mailbox_debug(struct mailbox *box,
const char *format, ...)
{
va_list args;
if (box->storage->user->mail_debug) {
va_start(args, format);
i_debug("imapsieve: mailbox %s: %s",
mailbox_get_vname(box),
t_strdup_vprintf(format, args));
va_end(args);
}
}
static inline void
imap_sieve_mailbox_warning(struct mailbox *box,
const char *format, ...) ATTR_FORMAT(2, 3);
static inline void
imap_sieve_mailbox_warning(struct mailbox *box,
const char *format, ...)
{
va_list args;
va_start(args, format);
i_warning("imapsieve: mailbox %s: %s",
mailbox_get_vname(box),
t_strdup_vprintf(format, args));
va_end(args);
}
static inline void
imap_sieve_mailbox_error(struct mailbox *box,
const char *format, ...) ATTR_FORMAT(2, 3);
static inline void
imap_sieve_mailbox_error(struct mailbox *box,
const char *format, ...)
{
va_list args;
va_start(args, format);
i_error("imapsieve: mailbox %s: %s",
mailbox_get_vname(box),
t_strdup_vprintf(format, args));
va_end(args);
}
/*
* Events
*/
static int imap_sieve_mailbox_get_script_real
(struct mailbox *box,
const char **script_name_r)
{
struct mail_user *user = box->storage->user;
struct mail_attribute_value value;
int ret;
*script_name_r = NULL;
/* get the name of the Sieve script from mailbox METADATA */
if ((ret=mailbox_attribute_get(box, MAIL_ATTRIBUTE_TYPE_SHARED,
MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT, &value)) < 0) {
imap_sieve_mailbox_error(box,
"Failed to read /shared/"
MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
"mailbox attribute: %s",
mailbox_get_last_error(box, NULL));
return -1;
}
if (ret > 0) {
imap_sieve_mailbox_debug(box,
"Mailbox attribute /shared/"
MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
"points to Sieve script `%s'", value.value);
/* if not found, get the name of the Sieve script from
server METADATA */
} else {
struct mail_namespace *ns;
struct mailbox *inbox;
imap_sieve_mailbox_debug(box,
"Mailbox attribute /shared/"
MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
"not found");
ns = mail_namespace_find_inbox(user->namespaces);
inbox = mailbox_alloc(ns->list, "INBOX",
MAILBOX_FLAG_READONLY);
ret = mailbox_attribute_get(inbox,
MAIL_ATTRIBUTE_TYPE_SHARED,
MAILBOX_ATTRIBUTE_PREFIX_DOVECOT_PVT_SERVER
MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT, &value);
if (ret <= 0) {
if (ret < 0) {
imap_sieve_mailbox_error(box,
"Failed to read /shared/"
MAIL_SERVER_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
"server attribute: %s",
mailbox_get_last_error(inbox, NULL));
} else if (ret == 0) {
imap_sieve_mailbox_debug(box,
"Server attribute /shared/"
MAIL_SERVER_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
"not found");
}
mailbox_free(&inbox);
return ret;
}
mailbox_free(&inbox);
imap_sieve_mailbox_debug(box,
"Server attribute /shared/"
MAIL_SERVER_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
"points to Sieve script `%s'", value.value);
}
*script_name_r = value.value;
return 1;
}
static int imap_sieve_mailbox_get_script
(struct mailbox *box, const char **script_name_r)
{
int ret;
ret = imap_sieve_mailbox_get_script_real
(box, script_name_r);
return ret;
}
static struct imap_sieve_mailbox_event *
imap_sieve_create_mailbox_event
(struct mailbox_transaction_context *t, struct mail *dest_mail)
{
struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT_REQUIRE(t);
struct imap_sieve_mailbox_event *event;
if (!array_is_created(&ismt->events))
i_array_init(&ismt->events, 64);
event = array_append_space(&ismt->events);
event->save_seq = t->save_count;
event->dest_mail_uid = dest_mail->uid;
return event;
}
static void imap_sieve_add_mailbox_event
(struct mailbox_transaction_context *t,
struct mail *dest_mail, struct mailbox *src_box,
const char *changed_flags)
{
struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT_REQUIRE(t);
struct imap_sieve_mailbox_event *event;
i_assert(ismt->src_box == NULL || ismt->src_box == src_box);
ismt->src_box = src_box;
event = imap_sieve_create_mailbox_event(t, dest_mail);
event->changed_flags = p_strdup(ismt->pool, changed_flags);
}
static void imap_sieve_add_mailbox_copy_event
(struct mailbox_transaction_context *t,
struct mail *dest_mail, struct mail *src_mail)
{
struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT_REQUIRE(t);
struct imap_sieve_mailbox_event *event;
i_assert(ismt->src_box == NULL || ismt->src_box == src_mail->box);
i_assert(ismt->src_mail_trans == NULL ||
ismt->src_mail_trans == src_mail->transaction);
ismt->src_box = src_mail->box;
ismt->src_mail_trans = src_mail->transaction;
event = imap_sieve_create_mailbox_event(t, dest_mail);
event->src_mail_uid = src_mail->uid;
}
/*
* Mail
*/
static void
imap_sieve_mail_update_flags(struct mail *_mail,
enum modify_type modify_type, enum mail_flags flags)
{
struct mail_private *mail = (struct mail_private *)_mail;
struct imap_sieve_mail *ismail = IMAP_SIEVE_MAIL_CONTEXT(mail);
enum mail_flags old_flags, new_flags, changed_flags;
old_flags = mail_get_flags(_mail);
ismail->module_ctx.super.update_flags(_mail, modify_type, flags);
new_flags = mail_get_flags(_mail);
changed_flags = old_flags ^ new_flags;
if (changed_flags == 0)
return;
if (ismail->flags == NULL)
ismail->flags = str_new(default_pool, 64);
imap_write_flags(ismail->flags, changed_flags, NULL);
}
static void
imap_sieve_mail_update_keywords(struct mail *_mail,
enum modify_type modify_type, struct mail_keywords *keywords)
{
struct mail_private *mail = (struct mail_private *)_mail;
struct imap_sieve_mail *ismail = IMAP_SIEVE_MAIL_CONTEXT(mail);
const char *const *old_keywords, *const *new_keywords;
unsigned int i, j;
old_keywords = mail_get_keywords(_mail);
ismail->module_ctx.super.update_keywords(_mail, modify_type, keywords);
new_keywords = mail_get_keywords(_mail);
if (ismail->flags == NULL)
ismail->flags = str_new(default_pool, 64);
/* Removed flags */
for (i = 0; old_keywords[i] != NULL; i++) {
for (j = 0; new_keywords[j] != NULL; j++) {
if (strcmp(old_keywords[i], new_keywords[j]) == 0)
break;
}
if (new_keywords[j] == NULL) {
if (str_len(ismail->flags) > 0)
str_append_c(ismail->flags, ' ');
str_append(ismail->flags, old_keywords[i]);
}
}
/* Added flags */
for (i = 0; new_keywords[i] != NULL; i++) {
for (j = 0; old_keywords[j] != NULL; j++) {
if (strcmp(new_keywords[i], old_keywords[j]) == 0)
break;
}
if (old_keywords[j] == NULL) {
if (str_len(ismail->flags) > 0)
str_append_c(ismail->flags, ' ');
str_append(ismail->flags, new_keywords[i]);
}
}
}
static void imap_sieve_mail_close(struct mail *_mail)
{
struct mail_private *mail = (struct mail_private *)_mail;
struct mailbox_transaction_context *t = _mail->transaction;
struct imap_sieve_mail *ismail = IMAP_SIEVE_MAIL_CONTEXT(mail);
if (ismail->flags != NULL && str_len(ismail->flags) > 0) {
if (!_mail->expunged) {
imap_sieve_mailbox_debug(_mail->box,
"FLAG event (changed flags: %s)",
str_c(ismail->flags));
imap_sieve_add_mailbox_event(t,
_mail, _mail->box, str_c(ismail->flags));
}
str_truncate(ismail->flags, 0);
}
ismail->module_ctx.super.close(_mail);
}
static void imap_sieve_mail_free(struct mail *_mail)
{
struct mail_private *mail = (struct mail_private *)_mail;
struct imap_sieve_mail *ismail = IMAP_SIEVE_MAIL_CONTEXT(mail);
string_t *flags = ismail->flags;
ismail->module_ctx.super.free(_mail);
if (flags != NULL)
str_free(&flags);
}
static void imap_sieve_mail_allocated(struct mail *_mail)
{
struct mail_private *mail = (struct mail_private *)_mail;
struct imap_sieve_mailbox_transaction *ismt =
IMAP_SIEVE_CONTEXT(_mail->transaction);
struct mail_user *user = _mail->box->storage->user;
struct imap_sieve_user *isuser =
IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
struct mail_vfuncs *v = mail->vlast;
struct imap_sieve_mail *ismail;
if (ismt == NULL || isuser->sieve_active)
return;
ismail = p_new(mail->pool, struct imap_sieve_mail, 1);
ismail->module_ctx.super = *v;
mail->vlast = &ismail->module_ctx.super;
v->close = imap_sieve_mail_close;
v->free = imap_sieve_mail_free;
v->update_flags = imap_sieve_mail_update_flags;
v->update_keywords = imap_sieve_mail_update_keywords;
MODULE_CONTEXT_SET(mail, imap_sieve_mail_module, ismail);
}
/*
* Save/copy
*/
static int
imap_sieve_mailbox_copy(struct mail_save_context *ctx, struct mail *mail)
{
struct mailbox_transaction_context *t = ctx->transaction;
struct mail_storage *storage = t->box->storage;
struct mail_user *user = storage->user;
struct imap_sieve_user *isuser =
IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
union mailbox_module_context *lbox =
IMAP_SIEVE_CONTEXT_REQUIRE(t->box);
struct imap_sieve_mailbox_transaction *ismt =
IMAP_SIEVE_CONTEXT(t);
if (lbox->super.copy(ctx, mail) < 0)
return -1;
if (ismt != NULL && !isuser->sieve_active &&
!ctx->dest_mail->expunged &&
(isuser->cur_cmd == IMAP_SIEVE_CMD_COPY ||
isuser->cur_cmd == IMAP_SIEVE_CMD_MOVE)) {
imap_sieve_mailbox_debug(t->box, "%s event",
(isuser->cur_cmd == IMAP_SIEVE_CMD_COPY ?
"COPY" : "MOVE"));
imap_sieve_add_mailbox_copy_event(t, ctx->dest_mail,
ctx->copy_src_mail);
}
return 0;
}
static int
imap_sieve_mailbox_save_finish(struct mail_save_context *ctx)
{
struct mailbox_transaction_context *t = ctx->transaction;
struct mailbox *box = t->box;
struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT(t);
union mailbox_module_context *lbox = IMAP_SIEVE_CONTEXT_REQUIRE(box);
struct mail_user *user = box->storage->user;
struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
struct mail *dest_mail = ctx->copying_via_save ? NULL : ctx->dest_mail;
if (lbox->super.save_finish(ctx) < 0)
return -1;
if (ismt != NULL && !isuser->sieve_active &&
dest_mail != NULL && !dest_mail->expunged &&
isuser->cur_cmd == IMAP_SIEVE_CMD_APPEND) {
imap_sieve_mailbox_debug(t->box, "APPEND event");
imap_sieve_add_mailbox_event(t, dest_mail, box, NULL);
}
return 0;
}
/*
* Mailbox
*/
static struct mailbox_transaction_context *
imap_sieve_mailbox_transaction_begin(struct mailbox *box,
enum mailbox_transaction_flags flags,
const char *reason)
{
union mailbox_module_context *lbox = IMAP_SIEVE_CONTEXT_REQUIRE(box);
struct mail_user *user = box->storage->user;
struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT(user);
struct mailbox_transaction_context *t;
struct imap_sieve_mailbox_transaction *ismt;
pool_t pool;
/* commence parent transaction */
t = lbox->super.transaction_begin(box, flags, reason);
if (isuser == NULL || isuser->sieve_active ||
isuser->cur_cmd == IMAP_SIEVE_CMD_NONE)
return t;
i_assert(isuser->client != NULL);
pool = pool_alloconly_create("imap_sieve_mailbox_transaction", 1024);
ismt = p_new(pool, struct imap_sieve_mailbox_transaction, 1);
ismt->pool = pool;
MODULE_CONTEXT_SET(t, imap_sieve_storage_module, ismt);
return t;
}
static void
imap_sieve_mailbox_transaction_free
(struct imap_sieve_mailbox_transaction *ismt)
{
if (array_is_created(&ismt->events))
array_free(&ismt->events);
pool_unref(&ismt->pool);
}
static void
imap_sieve_mailbox_run_copy_source(
struct imap_sieve_mailbox_transaction *ismt,
struct imap_sieve_run *isrun,
const struct imap_sieve_mailbox_event *mevent,
struct mail **src_mail)
{
struct mailbox *src_box = ismt->src_box;
int ret;
if (isrun == NULL)
return;
i_assert(ismt->src_mail_trans->box == src_box);
if (*src_mail == NULL)
*src_mail = mail_alloc(ismt->src_mail_trans, 0, NULL);
/* Select source message */
if (!mail_set_uid(*src_mail, mevent->src_mail_uid)) {
imap_sieve_mailbox_warning(src_box,
"Failed to find source message for Sieve event "
"(UID=%llu)", (unsigned long long)mevent->src_mail_uid);
return;
}
imap_sieve_mailbox_debug(src_box,
"Running copy_source_after scripts.");
/* Run scripts for source mail */
ret = imap_sieve_run_mail
(isrun, *src_mail, NULL);
if (ret > 0) {
/* Discard */
mail_update_flags(*src_mail, MODIFY_ADD, MAIL_DELETED);
}
}
static int
imap_sieve_mailbox_transaction_run(
struct imap_sieve_mailbox_transaction *ismt,
struct mailbox *dest_box,
struct mail_transaction_commit_changes *changes)
{
static const char *wanted_headers[] = {
"From", "To", "Message-ID", "Subject", "Return-Path",
NULL
};
struct mailbox *src_box = ismt->src_box;
struct mail_user *user = dest_box->storage->user;
struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
const struct imap_sieve_mailbox_event *mevent;
struct mailbox_header_lookup_ctx *headers_ctx;
struct mailbox_transaction_context *st;
struct mailbox *sbox;
struct imap_sieve_run *isrun, *isrun_src;
struct seq_range_iter siter;
const char *cause, *script_name = NULL;
bool can_discard;
struct mail *mail, *src_mail = NULL;
int ret;
if (ismt == NULL || !array_is_created(&ismt->events)) {
/* Nothing to do */
return 0;
}
i_assert(isuser->client != NULL);
/* Get user script for this mailbox */
if (isuser->user_script && imap_sieve_mailbox_get_script
(dest_box, &script_name) < 0) {
return 0; // FIXME: some errors may warrant -1
}
/* Make sure IMAPSIEVE is initialized for this user */
if (isuser->isieve == NULL)
isuser->isieve = imap_sieve_init(isuser->client);
can_discard = FALSE;
switch (isuser->cur_cmd) {
case IMAP_SIEVE_CMD_APPEND:
cause = "APPEND";
can_discard = TRUE;
break;
case IMAP_SIEVE_CMD_COPY:
case IMAP_SIEVE_CMD_MOVE:
cause = "COPY";
can_discard = TRUE;
break;
case IMAP_SIEVE_CMD_STORE:
case IMAP_SIEVE_CMD_OTHER:
cause = "FLAG";
break;
default:
i_unreached();
}
/* Initialize execution */
T_BEGIN {
ARRAY_TYPE(imap_sieve_mailbox_rule) mbrules;
ARRAY_TYPE(const_string) scripts_before, scripts_after;
ARRAY_TYPE(const_string) scripts_copy_source;
struct imap_sieve_mailbox_rule *const *rule_idx;
/* Find matching rules */
t_array_init(&mbrules, 16);
imap_sieve_mailbox_rules_get
(user, dest_box, src_box, cause, &mbrules);
/* Apply all matched rules */
t_array_init(&scripts_before, 8);
t_array_init(&scripts_after, 8);
t_array_init(&scripts_copy_source, 4);
array_foreach(&mbrules, rule_idx) {
struct imap_sieve_mailbox_rule *rule = *rule_idx;
if (rule->before != NULL)
array_append(&scripts_before, &rule->before, 1);
if (rule->after != NULL)
array_append(&scripts_after, &rule->after, 1);
if (rule->copy_source_after != NULL)
array_append(&scripts_copy_source, &rule->copy_source_after, 1);
}
(void)array_append_space(&scripts_before);
(void)array_append_space(&scripts_after);
/* Initialize */
ret = imap_sieve_run_init
(isuser->isieve, dest_box, src_box, cause, script_name,
array_idx(&scripts_before, 0),
array_idx(&scripts_after, 0), &isrun);
/* Initialize source script execution */
isrun_src = NULL;
if (ret > 0 && ismt->src_mail_trans != NULL &&
isuser->cur_cmd == IMAP_SIEVE_CMD_COPY &&
array_count(&scripts_copy_source) > 0) {
const char *no_scripts = NULL;
(void)array_append_space(&scripts_copy_source);
if (imap_sieve_run_init(isuser->isieve,
dest_box, src_box, cause, NULL,
&no_scripts, array_idx(&scripts_copy_source, 0),
&isrun_src) <= 0)
isrun_src = NULL;
}
} T_END;
if (ret <= 0) {
// FIXME: temp fail should be handled properly
return 0;
}
/* Get synchronized view on the destination mailbox */
sbox = mailbox_alloc(dest_box->list, dest_box->vname, 0);
if (mailbox_sync(sbox, 0) < 0) {
mailbox_free(&sbox);
imap_sieve_run_deinit(&isrun);
if (isrun_src != NULL)
imap_sieve_run_deinit(&isrun_src);
return -1;
}
/* Create transaction for event messages */
st = mailbox_transaction_begin(sbox, 0, __func__);
headers_ctx = mailbox_header_lookup_init(sbox, wanted_headers);
mail = mail_alloc(st, 0, headers_ctx);
mailbox_header_lookup_unref(&headers_ctx);
/* Iterate through all events */
seq_range_array_iter_init(&siter, &changes->saved_uids);
array_foreach(&ismt->events, mevent) {
uint32_t uid;
/* Determine UID for saved message */
if (mevent->dest_mail_uid > 0 ||
!seq_range_array_iter_nth(&siter, mevent->save_seq, &uid))
uid = mevent->dest_mail_uid;
/* Select event message */
if (!mail_set_uid(mail, uid) || mail->expunged) {
/* already gone for some reason */
imap_sieve_mailbox_debug(sbox,
"Message for Sieve event gone (UID=%llu)",
(unsigned long long)uid);
continue;
}
/* Run scripts for this mail */
ret = imap_sieve_run_mail
(isrun, mail, mevent->changed_flags);
/* Handle the result */
if (ret < 0) {
/* Sieve error; keep */
} else {
if (ret <= 0 || !can_discard) {
/* Keep */
} else if (!isuser->expunge_discarded) {
/* Mark as \Deleted */
mail_update_flags(mail,
MODIFY_ADD, MAIL_DELETED);
} else {
/* Expunge */
mail_expunge(mail);
}
imap_sieve_mailbox_run_copy_source
(ismt, isrun_src, mevent, &src_mail);
}
}
/* Cleanup */
mail_free(&mail);
ret = mailbox_transaction_commit(&st);
if (src_mail != NULL)
mail_free(&src_mail);
imap_sieve_run_deinit(&isrun);
if (isrun_src != NULL)
imap_sieve_run_deinit(&isrun_src);
mailbox_free(&sbox);
return ret;
}
static int
imap_sieve_mailbox_transaction_commit(
struct mailbox_transaction_context *t,
struct mail_transaction_commit_changes *changes_r)
{
struct mailbox *box = t->box;
struct mail_user *user = box->storage->user;
struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT(t);
union mailbox_module_context *lbox = IMAP_SIEVE_CONTEXT_REQUIRE(t->box);
struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
int ret = 0;
if ((lbox->super.transaction_commit(t, changes_r)) < 0)
ret = -1;
else if (ismt != NULL) {
isuser->sieve_active = TRUE;
if (imap_sieve_mailbox_transaction_run
(ismt, box, changes_r) < 0)
ret = -1;
isuser->sieve_active = FALSE;
}
if (ismt != NULL)
imap_sieve_mailbox_transaction_free(ismt);
return ret;
}
static void
imap_sieve_mailbox_transaction_rollback(
struct mailbox_transaction_context *t)
{
struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT(t);
union mailbox_module_context *lbox = IMAP_SIEVE_CONTEXT_REQUIRE(t->box);
lbox->super.transaction_rollback(t);
if (ismt != NULL)
imap_sieve_mailbox_transaction_free(ismt);
}
static void imap_sieve_mailbox_allocated(struct mailbox *box)
{
struct mail_user *user = box->storage->user;
struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
struct mailbox_vfuncs *v = box->vlast;
union mailbox_module_context *lbox;
if (isuser->client == NULL || isuser->sieve_active ||
(box->flags & MAILBOX_FLAG_READONLY) != 0)
return;
lbox = p_new(box->pool, union mailbox_module_context, 1);
lbox->super = *v;
box->vlast = &lbox->super;
v->copy = imap_sieve_mailbox_copy;
v->save_finish = imap_sieve_mailbox_save_finish;
v->transaction_begin = imap_sieve_mailbox_transaction_begin;
v->transaction_commit = imap_sieve_mailbox_transaction_commit;
v->transaction_rollback = imap_sieve_mailbox_transaction_rollback;
MODULE_CONTEXT_SET_SELF(box, imap_sieve_storage_module, lbox);
}
/*
* Mailbox rules
*/
static unsigned int imap_sieve_mailbox_rule_hash
(const struct imap_sieve_mailbox_rule *rule)
{
unsigned int hash = str_hash(rule->mailbox);
if (rule->from != NULL)
hash += str_hash(rule->from);
return hash;
}
static int imap_sieve_mailbox_rule_cmp
(const struct imap_sieve_mailbox_rule *rule1,
const struct imap_sieve_mailbox_rule *rule2)
{
int ret;
if ((ret=strcmp(rule1->mailbox, rule2->mailbox)) != 0)
return ret;
return null_strcmp(rule1->from, rule2->from);
}
static bool rule_pattern_has_wildcards(const char *pattern)
{
for (; *pattern != '\0'; pattern++) {
if (*pattern == '%' || *pattern == '*')
return TRUE;
}
return FALSE;
}
static void
imap_sieve_mailbox_rules_init(struct mail_user *user)
{
struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
string_t *identifier;
unsigned int i = 0;
size_t prefix_len;
if (hash_table_is_created(isuser->mbox_rules))
return;
hash_table_create(&isuser->mbox_rules, default_pool, 0,
imap_sieve_mailbox_rule_hash, imap_sieve_mailbox_rule_cmp);
i_array_init(&isuser->mbox_patterns, 8);
identifier = t_str_new(256);
str_append(identifier, "imapsieve_mailbox");
prefix_len = str_len(identifier);
for (i = 1; ; i++) {
struct imap_sieve_mailbox_rule *mbrule;
const char *setval;
size_t id_len;
str_truncate(identifier, prefix_len);
str_printfa(identifier, "%u", i);
id_len = str_len(identifier);
str_append(identifier, "_name");
setval = mail_user_plugin_getenv
(user, str_c(identifier));
if (setval == NULL || *setval == '\0')
break;
setval = t_str_trim(setval, "\t ");
if (strcasecmp(setval, "INBOX") == 0)
setval = t_str_ucase(setval);
mbrule = p_new(user->pool,
struct imap_sieve_mailbox_rule, 1);
mbrule->index = i;
mbrule->mailbox = p_strdup(user->pool, setval);
str_truncate(identifier, id_len);
str_append(identifier, "_from");
setval = mail_user_plugin_getenv(user, str_c(identifier));
if (setval != NULL && *setval != '\0') {
setval = t_str_trim(setval, "\t ");
if (strcasecmp(setval, "INBOX") == 0)
setval = t_str_ucase(setval);
mbrule->from = p_strdup(user->pool, setval);
if (strcmp(mbrule->from, "*") == 0)
mbrule->from = NULL;
}
if ((strcmp(mbrule->mailbox, "*") == 0 ||
!rule_pattern_has_wildcards(mbrule->mailbox)) &&
(mbrule->from == NULL ||
!rule_pattern_has_wildcards(mbrule->from)) &&
hash_table_lookup(isuser->mbox_rules, mbrule) != NULL) {
imap_sieve_warning(user,
"Duplicate static mailbox rule [%u] for mailbox `%s' "
"(skipped)", i, mbrule->mailbox);
continue;
}
str_truncate(identifier, id_len);
str_append(identifier, "_causes");
setval = mail_user_plugin_getenv(user, str_c(identifier));
if (setval != NULL && *setval != '\0') {
const char *const *cause;
mbrule->causes = (const char *const *)
p_strsplit_spaces(user->pool, setval, " \t,");
for (cause = mbrule->causes; *cause != NULL; cause++) {
if (!imap_sieve_event_cause_valid(*cause))
break;
}
if (*cause != NULL) {
imap_sieve_warning(user,
"Static mailbox rule [%u] has invalid event cause `%s' "
"(skipped)", i, *cause);
continue;
}
}
str_truncate(identifier, id_len);
str_append(identifier, "_before");
setval = mail_user_plugin_getenv(user, str_c(identifier));
mbrule->before = p_strdup_empty(user->pool, setval);
str_truncate(identifier, id_len);
str_append(identifier, "_after");
setval = mail_user_plugin_getenv(user, str_c(identifier));
mbrule->after = p_strdup_empty(user->pool, setval);
str_truncate(identifier, id_len);
str_append(identifier, "_copy_source_after");
setval = mail_user_plugin_getenv(user, str_c(identifier));
mbrule->copy_source_after = p_strdup_empty(user->pool, setval);
if (user->mail_debug) {
imap_sieve_debug(user, "Static mailbox rule [%u]: "
"mailbox=`%s' from=`%s' causes=(%s) => "
"before=%s after=%s%s",
mbrule->index, mbrule->mailbox,
(mbrule->from == NULL ? "*" : mbrule->from),
t_strarray_join(mbrule->causes, " "),
(mbrule->before == NULL ? "(none)" :
t_strconcat("`", mbrule->before, "'", NULL)),
(mbrule->after == NULL ? "(none)" :