#include "lib.h"
#include "str.h"
#include "strfuncs.h"
#include "ioloop.h"
#include "hostpid.h"
#include "str-sanitize.h"
#include "unichar.h"
#include "istream.h"
#include "istream-header-filter.h"
#include "mail-deliver.h"
#include "mail-storage.h"
#include "message-date.h"
#include "message-size.h"
#include "rfc2822.h"
#include "sieve-code.h"
#include "sieve-extensions.h"
#include "sieve-binary.h"
#include "sieve-interpreter.h"
#include "sieve-dump.h"
#include "sieve-result.h"
#include "sieve-actions.h"
#include "sieve-message.h"
#include "sieve-smtp.h"
#include <ctype.h>
const struct sieve_operand_class sieve_side_effect_operand_class =
{ "SIDE-EFFECT" };
bool sieve_opr_side_effect_read
(const struct sieve_runtime_env *renv, sieve_size_t *address,
struct sieve_side_effect *seffect)
{
const struct sieve_side_effect_def *sdef;
seffect->context = NULL;
if ( !sieve_opr_object_read
(renv, &sieve_side_effect_operand_class, address, &seffect->object) )
return FALSE;
sdef = seffect->def =
(const struct sieve_side_effect_def *) seffect->object.def;
if ( sdef->read_context != NULL &&
!sdef->read_context(seffect, renv, address, &seffect->context) ) {
return FALSE;
}
return TRUE;
}
bool sieve_opr_side_effect_dump
(const struct sieve_dumptime_env *denv, sieve_size_t *address)
{
struct sieve_side_effect seffect;
const struct sieve_side_effect_def *sdef;
if ( !sieve_opr_object_dump
(denv, &sieve_side_effect_operand_class, address, &seffect.object) )
return FALSE;
sdef = seffect.def =
(const struct sieve_side_effect_def *) seffect.object.def;
if ( sdef->dump_context != NULL ) {
sieve_code_descend(denv);
if ( !sdef->dump_context(&seffect, denv, address) ) {
return FALSE;
}
sieve_code_ascend(denv);
}
return TRUE;
}
int sieve_action_opr_optional_dump
(const struct sieve_dumptime_env *denv, sieve_size_t *address,
signed int *opt_code)
{
signed int _opt_code = 0;
bool final = FALSE, opok = TRUE;
if ( opt_code == NULL ) {
opt_code = &_opt_code;
final = TRUE;
}
while ( opok ) {
int opt;
if ( (opt=sieve_opr_optional_dump(denv, address, opt_code)) <= 0 )
return opt;
if ( *opt_code == SIEVE_OPT_SIDE_EFFECT ) {
opok = sieve_opr_side_effect_dump(denv, address);
} else {
return ( final ? -1 : 1 );
}
}
return -1;
}
int sieve_action_opr_optional_read
(const struct sieve_runtime_env *renv, sieve_size_t *address,
signed int *opt_code, int *exec_status,
struct sieve_side_effects_list **list)
{
signed int _opt_code = 0;
bool final = FALSE;
int ret;
if ( opt_code == NULL ) {
opt_code = &_opt_code;
final = TRUE;
}
if ( exec_status != NULL )
*exec_status = SIEVE_EXEC_OK;
for ( ;; ) {
int opt;
if ( (opt=sieve_opr_optional_read(renv, address, opt_code)) <= 0 ) {
if ( opt < 0 && exec_status != NULL )
*exec_status = SIEVE_EXEC_BIN_CORRUPT;
return opt;
}
if ( *opt_code == SIEVE_OPT_SIDE_EFFECT ) {
struct sieve_side_effect seffect;
i_assert( list != NULL );
if ( (ret=sieve_opr_side_effect_read(renv, address, &seffect)) <= 0 ) {
if ( exec_status != NULL )
*exec_status = ret;
return -1;
}
if ( *list == NULL )
*list = sieve_side_effects_list_create(renv->result);
sieve_side_effects_list_add(*list, &seffect);
} else {
if ( final ) {
sieve_runtime_trace_error(renv, "invalid optional operand");
if ( exec_status != NULL )
*exec_status = SIEVE_EXEC_BIN_CORRUPT;
return -1;
}
return 1;
}
}
i_unreached();
return -1;
}
static bool act_store_equals
(const struct sieve_script_env *senv,
const struct sieve_action *act1, const struct sieve_action *act2);
static int act_store_check_duplicate
(const struct sieve_runtime_env *renv,
const struct sieve_action *act,
const struct sieve_action *act_other);
static void act_store_print
(const struct sieve_action *action,
const struct sieve_result_print_env *rpenv, bool *keep);
static bool act_store_start
(const struct sieve_action *action,
const struct sieve_action_exec_env *aenv, void **tr_context);
static bool act_store_execute
(const struct sieve_action *action,
const struct sieve_action_exec_env *aenv, void *tr_context);
static bool act_store_commit
(const struct sieve_action *action,
const struct sieve_action_exec_env *aenv, void *tr_context, bool *keep);
static void act_store_rollback
(const struct sieve_action *action,
const struct sieve_action_exec_env *aenv, void *tr_context, bool success);
const struct sieve_action_def act_store = {
"store",
SIEVE_ACTFLAG_TRIES_DELIVER,
act_store_equals,
act_store_check_duplicate,
NULL,
act_store_print,
act_store_start,
act_store_execute,
act_store_commit,
act_store_rollback,
};
int sieve_act_store_add_to_result
(const struct sieve_runtime_env *renv,
struct sieve_side_effects_list *seffects, const char *mailbox)
{
pool_t pool;
struct act_store_context *act;
pool = sieve_result_pool(renv->result);
act = p_new(pool, struct act_store_context, 1);
act->mailbox = p_strdup(pool, mailbox);
return sieve_result_add_action(renv, NULL, &act_store, seffects,
(void *) act, 0);
}
void sieve_act_store_add_flags
(const struct sieve_action_exec_env *aenv, void *tr_context,
const char *const *keywords, enum mail_flags flags)
{
struct act_store_transaction *trans =
(struct act_store_transaction *) tr_context;
if ( *keywords != NULL ) {
const char *const *kw;
if ( !array_is_created(&trans->keywords) ) {
pool_t pool = sieve_result_pool(aenv->result);
p_array_init(&trans->keywords, pool, 2);
}
kw = keywords;
while ( *kw != NULL ) {
const char *kw_error;
if ( trans->box != NULL && trans->error_code == MAIL_ERROR_NONE ) {
if ( mailbox_keyword_is_valid(trans->box, *kw, &kw_error) )
array_append(&trans->keywords, kw, 1);
else {
char *error = "";
if ( kw_error != NULL && *kw_error != '\0' ) {
error = t_strdup_noconst(kw_error);
error[0] = i_tolower(error[0]);
}
sieve_result_warning(aenv,
"specified IMAP keyword '%s' is invalid (ignored): %s",
str_sanitize(*kw, 64), error);
}
}
kw++;
}
}
trans->flags |= flags;
trans->flags_altered = TRUE;
}
void sieve_act_store_get_storage_error
(const struct sieve_action_exec_env *aenv, struct act_store_transaction *trans)
{
pool_t pool = sieve_result_pool(aenv->result);
trans->error = p_strdup(pool,
mail_storage_get_last_error(mailbox_get_storage(trans->box),
&trans->error_code));
}
static bool act_store_equals
(const struct sieve_script_env *senv,
const struct sieve_action *act1, const struct sieve_action *act2)
{
struct act_store_context *st_ctx1 =
( act1 == NULL ? NULL : (struct act_store_context *) act1->context );
struct act_store_context *st_ctx2 =
( act2 == NULL ? NULL : (struct act_store_context *) act2->context );
const char *mailbox1, *mailbox2;
if ( st_ctx1 == NULL && st_ctx2 == NULL )
return TRUE;
mailbox1 = ( st_ctx1 == NULL ?
SIEVE_SCRIPT_DEFAULT_MAILBOX(senv) : st_ctx1->mailbox );
mailbox2 = ( st_ctx2 == NULL ?
SIEVE_SCRIPT_DEFAULT_MAILBOX(senv) : st_ctx2->mailbox );
if ( strcmp(mailbox1, mailbox2) == 0 )
return TRUE;
return
( strcasecmp(mailbox1, "INBOX") == 0 && strcasecmp(mailbox2, "INBOX") == 0 );
}
static int act_store_check_duplicate
(const struct sieve_runtime_env *renv,
const struct sieve_action *act,
const struct sieve_action *act_other)
{
return ( act_store_equals(renv->scriptenv, act, act_other) ? 1 : 0 );
}
static void act_store_print
(const struct sieve_action *action,
const struct sieve_result_print_env *rpenv, bool *keep)
{
struct act_store_context *ctx = (struct act_store_context *) action->context;
const char *mailbox;
mailbox = ( ctx == NULL ?
SIEVE_SCRIPT_DEFAULT_MAILBOX(rpenv->scriptenv) : ctx->mailbox );
sieve_result_action_printf(rpenv, "store message in folder: %s",
str_sanitize(mailbox, 128));
*keep = FALSE;
}
static bool act_store_mailbox_open
(const struct sieve_action_exec_env *aenv, const char *mailbox,
struct mailbox **box_r, enum mail_error *error_code_r, const char **error_r)
{
struct mail_storage **storage = &(aenv->exec_status->last_storage);
struct mail_deliver_save_open_context save_ctx;
*box_r = NULL;
if ( !uni_utf8_str_is_valid(mailbox) ) {
*error_r = t_strdup_printf("mailbox name not utf-8: %s", mailbox);
*error_code_r = MAIL_ERROR_PARAMS;
return FALSE;
}
memset(&save_ctx, 0, sizeof(save_ctx));
save_ctx.user = aenv->scriptenv->user;
save_ctx.lda_mailbox_autocreate = aenv->scriptenv->mailbox_autocreate;
save_ctx.lda_mailbox_autosubscribe = aenv->scriptenv->mailbox_autosubscribe;
if (mail_deliver_save_open(&save_ctx, mailbox, box_r, error_code_r, error_r) < 0)
return FALSE;
*storage = mailbox_get_storage(*box_r);
return TRUE;
}
static bool act_store_start
(const struct sieve_action *action,
const struct sieve_action_exec_env *aenv, void **tr_context)
{
struct act_store_context *ctx = (struct act_store_context *) action->context;
const struct sieve_script_env *senv = aenv->scriptenv;
struct act_store_transaction *trans;
struct mailbox *box = NULL;
pool_t pool = sieve_result_pool(aenv->result);
const char *error = NULL;
enum mail_error error_code = MAIL_ERROR_NONE;
bool disabled = FALSE, open_failed = FALSE;
if ( ctx == NULL ) {
ctx = p_new(pool, struct act_store_context, 1);
ctx->mailbox = p_strdup(pool, SIEVE_SCRIPT_DEFAULT_MAILBOX(senv));
}
if ( senv->user != NULL ) {
if ( !act_store_mailbox_open(aenv, ctx->mailbox, &box, &error_code, &error) ) {
open_failed = TRUE;
}
} else {
disabled = TRUE;
}
trans = p_new(pool, struct act_store_transaction, 1);
trans->context = ctx;
trans->box = box;
trans->flags = 0;
trans->disabled = disabled;
if ( open_failed ) {
trans->error = error;
trans->error_code = error_code;
} else {
trans->error_code = MAIL_ERROR_NONE;
}
*tr_context = (void *)trans;
return ( trans->error_code == MAIL_ERROR_NONE ||
trans->error_code == MAIL_ERROR_NOTFOUND );
}
static struct mail_keywords *act_store_keywords_create
(const struct sieve_action_exec_env *aenv, ARRAY_TYPE(const_string) *keywords,
struct mailbox *box)
{
struct mail_keywords *box_keywords = NULL;
if ( array_is_created(keywords) && array_count(keywords) > 0 )
{
const char *const *kwds;
(void)array_append_space(keywords);
kwds = array_idx(keywords, 0);
if ( mailbox_keywords_create(box, kwds, &box_keywords) < 0) {
sieve_result_error(aenv, "invalid keywords set for stored message");
return NULL;
}
}
return box_keywords;
}
static bool act_store_execute
(const struct sieve_action *action ATTR_UNUSED,
const struct sieve_action_exec_env *aenv, void *tr_context)
{
struct act_store_transaction *trans =
(struct act_store_transaction *) tr_context;
const struct sieve_message_data *msgdata = aenv->msgdata;
struct mail_save_context *save_ctx;
struct mail_keywords *keywords = NULL;
bool result = TRUE;
if ( trans == NULL ) return FALSE;
if ( trans->disabled ) return TRUE;
if ( trans->box == NULL || trans->error_code != MAIL_ERROR_NONE )
return FALSE;
if ( mailbox_backends_equal(trans->box, msgdata->mail->box) ) {
trans->redundant = TRUE;
if ( trans->flags_altered ) {
keywords = act_store_keywords_create
(aenv, &trans->keywords, msgdata->mail->box);
if ( keywords != NULL ) {
mail_update_keywords(msgdata->mail, MODIFY_REPLACE, keywords);
mailbox_keywords_unref(trans->box, &keywords);
}
mail_update_flags(msgdata->mail, MODIFY_REPLACE, trans->flags);
}
return TRUE;
}
if ( strcmp(trans->context->mailbox,
SIEVE_SCRIPT_DEFAULT_MAILBOX(aenv->scriptenv)) == 0 )
aenv->exec_status->tried_default_save = TRUE;
aenv->exec_status->last_storage = mailbox_get_storage(trans->box);
trans->mail_trans = mailbox_transaction_begin
(trans->box, MAILBOX_TRANSACTION_FLAG_EXTERNAL);
trans->dest_mail = mail_alloc(trans->mail_trans, 0, NULL);
save_ctx = mailbox_save_alloc(trans->mail_trans);
mailbox_save_set_dest_mail(save_ctx, trans->dest_mail);
if ( trans->flags_altered ) {
keywords = act_store_keywords_create(aenv, &trans->keywords, trans->box);
mailbox_save_set_flags(save_ctx, trans->flags, keywords);
}
if ( mailbox_copy(&save_ctx, aenv->msgdata->mail) < 0 ) {
sieve_act_store_get_storage_error(aenv, trans);
result = FALSE;
}
if ( keywords != NULL ) {
mailbox_keywords_unref(trans->box, &keywords);
}
return result;
}
static void act_store_log_status
(struct act_store_transaction *trans, const struct sieve_action_exec_env *aenv,
bool rolled_back, bool status )
{
const char *mailbox_name;
mailbox_name = str_sanitize(trans->context->mailbox, 128);
if ( trans->box != NULL ) {
const char *mailbox_vname = mailbox_get_vname(trans->box);
if ( strcmp(mailbox_name, mailbox_vname) != 0 )
mailbox_name =
t_strdup_printf("'%s' (%s)", mailbox_name, mailbox_vname);
else
mailbox_name = t_strdup_printf("'%s'", mailbox_name);
} else {
mailbox_name = t_strdup_printf("'%s'", mailbox_name);
}
if ( trans->disabled ) {
sieve_result_global_log
(aenv, "store into mailbox %s skipped", mailbox_name);
} else if ( trans->redundant ) {
sieve_result_global_log
(aenv, "left message in mailbox %s", mailbox_name);
} else if ( !status ) {
const char *errstr;
enum mail_error error_code;
if ( trans->error != NULL ) {
errstr = trans->error;
error_code = trans->error_code;
} else {
errstr = mail_storage_get_last_error
(mailbox_get_storage(trans->box), &error_code);
}
if ( error_code != MAIL_ERROR_NOTFOUND && error_code != MAIL_ERROR_PARAMS )
{
sieve_result_global_error(aenv, "failed to store into mailbox %s: %s",
mailbox_name, errstr);
} else {
sieve_result_error(aenv, "failed to store into mailbox %s: %s",
mailbox_name, errstr);
}
} else if ( rolled_back ) {
sieve_result_global_log
(aenv, "store into mailbox %s aborted", mailbox_name);
} else {
sieve_result_global_log
(aenv, "stored mail into mailbox %s", mailbox_name);
}
}
static bool act_store_commit
(const struct sieve_action *action ATTR_UNUSED,
const struct sieve_action_exec_env *aenv, void *tr_context, bool *keep)
{
struct act_store_transaction *trans =
(struct act_store_transaction *) tr_context;
bool status = TRUE;
if ( trans == NULL ) return FALSE;
if ( trans->disabled ) {
act_store_log_status(trans, aenv, FALSE, status);
*keep = FALSE;
if ( trans->box != NULL )
mailbox_free(&trans->box);
return TRUE;
} else if ( trans->redundant ) {
act_store_log_status(trans, aenv, FALSE, status);
aenv->exec_status->keep_original = TRUE;
aenv->exec_status->message_saved = TRUE;
if ( trans->box != NULL )
mailbox_free(&trans->box);
return TRUE;
}
aenv->exec_status->last_storage = mailbox_get_storage(trans->box);
if ( trans->dest_mail != NULL )
mail_free(&trans->dest_mail);
status = ( mailbox_transaction_commit(&trans->mail_trans) == 0 );
if ( status )
aenv->exec_status->message_saved = TRUE;
act_store_log_status(trans, aenv, FALSE, status);
*keep = !status;
if ( trans->box != NULL )
mailbox_free(&trans->box);
return status;
}
static void act_store_rollback
(const struct sieve_action *action ATTR_UNUSED,
const struct sieve_action_exec_env *aenv, void *tr_context, bool success)
{
struct act_store_transaction *trans =
(struct act_store_transaction *) tr_context;
act_store_log_status(trans, aenv, TRUE, success);
if ( trans->dest_mail != NULL )
mail_free(&trans->dest_mail);
if ( trans->mail_trans != NULL )
mailbox_transaction_rollback(&trans->mail_trans);
if ( trans->box != NULL )
mailbox_free(&trans->box);
}
bool sieve_action_duplicate_check_available
(const struct sieve_script_env *senv)
{
return ( senv->duplicate_check != NULL && senv->duplicate_mark != NULL );
}
int sieve_action_duplicate_check
(const struct sieve_script_env *senv, const void *id, size_t id_size)
{
if ( senv->duplicate_check == NULL || senv->duplicate_mark == NULL)
return 0;
return senv->duplicate_check
(senv->script_context, id, id_size, senv->username);
}
void sieve_action_duplicate_mark
(const struct sieve_script_env *senv, const void *id, size_t id_size,
time_t time)
{
if ( senv->duplicate_check == NULL || senv->duplicate_mark == NULL)
return;
senv->duplicate_mark
(senv->script_context, id, id_size, senv->username, time);
}
static bool sieve_action_do_reject_mail
(const struct sieve_action_exec_env *aenv, const char *sender,
const char *recipient, const char *reason)
{
const struct sieve_script_env *senv = aenv->scriptenv;
const struct sieve_message_data *msgdata = aenv->msgdata;
struct istream *input;
void *smtp_handle;
struct message_size hdr_size;
FILE *f;
const char *new_msgid, *boundary;
const unsigned char *data;
const char *header;
size_t size;
int ret;
if ( !sieve_smtp_available(senv) ) {
sieve_result_global_warning
(aenv, "reject action has no means to send mail");
return TRUE;
}
smtp_handle = sieve_smtp_open(senv, sender, NULL, &f);
new_msgid = sieve_message_get_new_id(senv);
boundary = t_strdup_printf("%s/%s", my_pid, senv->hostname);
rfc2822_header_field_write(f, "X-Sieve", SIEVE_IMPLEMENTATION);
rfc2822_header_field_write(f, "Message-ID", new_msgid);
rfc2822_header_field_write(f, "Date", message_date_create(ioloop_time));
rfc2822_header_field_printf(f, "From", "Mail Delivery Subsystem <%s>",
senv->postmaster_address);
rfc2822_header_field_printf(f, "To", "<%s>", sender);
rfc2822_header_field_write(f, "Subject", "Automatically rejected mail");
rfc2822_header_field_write(f, "Auto-Submitted", "auto-replied (rejected)");
rfc2822_header_field_write(f, "Precedence", "bulk");
rfc2822_header_field_write(f, "MIME-Version", "1.0");
rfc2822_header_field_printf(f, "Content-Type",
"multipart/report; report-type=disposition-notification;\n"
"boundary=\"%s\"", boundary);
fprintf(f, "\r\nThis is a MIME-encapsulated message\r\n\r\n");
fprintf(f, "--%s\r\n", boundary);
fprintf(f, "Content-Type: text/plain; charset=utf-8\r\n");
fprintf(f, "Content-Disposition: inline\r\n");
fprintf(f, "Content-Transfer-Encoding: 8bit\r\n\r\n");
fprintf(f, "Your message to <%s> was automatically rejected:\r\n"
"%s\r\n", recipient, reason);
fprintf(f, "--%s\r\n"
"Content-Type: message/disposition-notification\r\n\r\n", boundary);
fprintf(f, "Reporting-UA: %s; Dovecot Mail Delivery Agent\r\n",
senv->hostname);
if (mail_get_first_header(msgdata->mail, "Original-Recipient", &header) > 0)
fprintf(f, "Original-Recipient: rfc822; %s\r\n", header);
fprintf(f, "Final-Recipient: rfc822; %s\r\n", recipient);
if ( msgdata->id != NULL )
fprintf(f, "Original-Message-ID: %s\r\n", msgdata->id);
fprintf(f, "Disposition: "
"automatic-action/MDN-sent-automatically; deleted\r\n");
fprintf(f, "\r\n");
fprintf(f, "--%s\r\nContent-Type: message/rfc822\r\n\r\n", boundary);
if (mail_get_stream(msgdata->mail, &hdr_size, NULL, &input) == 0) {
static const char *const exclude_headers[] = {
"Content-Type"
};
input = i_stream_create_header_filter(input,
HEADER_FILTER_EXCLUDE | HEADER_FILTER_NO_CR | HEADER_FILTER_HIDE_BODY,
exclude_headers, N_ELEMENTS(exclude_headers),
null_header_filter_callback, NULL);
while ((ret = i_stream_read_data(input, &data, &size, 0)) > 0) {
if (fwrite(data, size, 1, f) == 0)
break;
i_stream_skip(input, size);
}
i_stream_unref(&input);
i_assert(ret != 0);
}
fprintf(f, "\r\n\r\n--%s--\r\n", boundary);
if ( !sieve_smtp_close(senv, smtp_handle) ) {
sieve_result_global_error(aenv,
"failed to send rejection message to <%s> "
"(refer to server log for more information)",
str_sanitize(sender, 80));
return FALSE;
}
return TRUE;
}
bool sieve_action_reject_mail
(const struct sieve_action_exec_env *aenv,
const char *sender, const char *recipient, const char *reason)
{
const struct sieve_script_env *senv = aenv->scriptenv;
if ( senv->reject_mail != NULL ) {
return ( senv->reject_mail(senv->script_context, recipient, reason) >= 0 );
}
return sieve_action_do_reject_mail(aenv, sender, recipient, reason);
}