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/* Copyright (c) 2002-2018 Pigeonhole authors, see the included COPYING file
*/
#include "lib.h"
#include "sieve-common.h"
#include "sieve-limits.h"
#include "sieve-error.h"
#include "sieve-address.h"
#include "sieve-address-source.h"
#include "sieve-settings.h"
#include <ctype.h>
/*
* Access to settings
*/
bool sieve_setting_get_uint_value(struct sieve_instance *svinst,
const char *setting,
unsigned long long int *value_r)
{
const char *str_value;
str_value = sieve_setting_get(svinst, setting);
if (str_value == NULL || *str_value == '\0')
return FALSE;
if (str_to_ullong(str_value, value_r) < 0) {
e_warning(svinst->event,
"invalid unsigned integer value for setting '%s': "
"'%s'", setting, str_value);
return FALSE;
}
return TRUE;
}
bool sieve_setting_get_int_value(struct sieve_instance *svinst,
const char *setting, long long int *value_r)
{
const char *str_value;
str_value = sieve_setting_get(svinst, setting);
if (str_value == NULL || *str_value == '\0')
return FALSE;
if (str_to_llong(str_value, value_r) < 0) {
e_warning(svinst->event,
"invalid integer value for setting '%s': '%s'",
setting, str_value);
return FALSE;
}
return TRUE;
}
bool sieve_setting_get_size_value(struct sieve_instance *svinst,
const char *setting, size_t *value_r)
{
const char *str_value;
uintmax_t value, multiply = 1;
const char *endp;
str_value = sieve_setting_get(svinst, setting);
if (str_value == NULL || *str_value == '\0')
return FALSE;
if (str_parse_uintmax(str_value, &value, &endp) < 0) {
e_warning(svinst->event,
"invalid size value for setting '%s': '%s'",
setting, str_value);
return FALSE;
}
switch (i_toupper(*endp)) {
case '\0': /* default */
case 'B': /* byte (useless) */
multiply = 1;
break;
case 'K': /* kilobyte */
multiply = 1024;
break;
case 'M': /* megabyte */
multiply = 1024*1024;
break;
case 'G': /* gigabyte */
multiply = 1024*1024*1024;
break;
case 'T': /* terabyte */
multiply = 1024ULL*1024*1024*1024;
break;
default:
e_warning(svinst->event,
"invalid size value for setting '%s': '%s'",
setting, str_value);
return FALSE;
}
if (value > SSIZE_T_MAX / multiply) {
e_warning(svinst->event,
"overflowing size value for setting '%s': '%s'",
setting, str_value);
return FALSE;
}
*value_r = (size_t)(value * multiply);
return TRUE;
}
bool sieve_setting_get_bool_value(struct sieve_instance *svinst,
const char *setting, bool *value_r)
{
const char *str_value;
str_value = sieve_setting_get(svinst, setting);
if (str_value == NULL)
return FALSE;
str_value = t_str_trim(str_value, "\t ");
if (*str_value == '\0')
return FALSE;
if (strcasecmp(str_value, "yes") == 0) {
*value_r = TRUE;
return TRUE;
}
if (strcasecmp(str_value, "no") == 0) {
*value_r = FALSE;
return TRUE;
}
e_warning(svinst->event,
"invalid boolean value for setting '%s': '%s'",
setting, str_value);
return FALSE;
}
bool sieve_setting_get_duration_value(struct sieve_instance *svinst,
const char *setting,
sieve_number_t *value_r)
{
const char *str_value;
uintmax_t value, multiply = 1;
const char *endp;
str_value = sieve_setting_get(svinst, setting);
if (str_value == NULL)
return FALSE;
str_value = t_str_trim(str_value, "\t ");
if (*str_value == '\0')
return FALSE;
if (str_parse_uintmax(str_value, &value, &endp) < 0) {
e_warning(svinst->event,
"invalid duration value for setting '%s': '%s'",
setting, str_value);
return FALSE;
}
switch (i_tolower(*endp)) {
case '\0': /* default */
case 's': /* seconds */
multiply = 1;
break;
case 'm': /* minutes */
multiply = 60;
break;
case 'h': /* hours */
multiply = 60*60;
break;
case 'd': /* days */
multiply = 24*60*60;
break;
default:
e_warning(svinst->event,
"invalid duration value for setting '%s': '%s'",
setting, str_value);
return FALSE;
}
if (value > SIEVE_MAX_NUMBER / multiply) {
e_warning(svinst->event,
"overflowing duration value for setting '%s': '%s'",
setting, str_value);
return FALSE;
}
*value_r = (unsigned int)(value * multiply);
return TRUE;
}
/*
* Main Sieve engine settings
*/
void sieve_settings_load(struct sieve_instance *svinst)
{
const char *str_setting, *error;
unsigned long long int uint_setting;
size_t size_setting;
sieve_number_t period;
svinst->max_script_size = SIEVE_DEFAULT_MAX_SCRIPT_SIZE;
if (sieve_setting_get_size_value(svinst, "sieve_max_script_size",
&size_setting))
svinst->max_script_size = size_setting;
svinst->max_actions = SIEVE_DEFAULT_MAX_ACTIONS;
if (sieve_setting_get_uint_value(svinst, "sieve_max_actions",
&uint_setting))
svinst->max_actions = (unsigned int)uint_setting;
svinst->max_redirects = SIEVE_DEFAULT_MAX_REDIRECTS;
if (sieve_setting_get_uint_value(svinst, "sieve_max_redirects",
&uint_setting))
svinst->max_redirects = (unsigned int)uint_setting;
svinst->max_cpu_time_secs =
(svinst->env_location == SIEVE_ENV_LOCATION_MS ?
0 : SIEVE_DEFAULT_MAX_CPU_TIME_SECS);
if (sieve_setting_get_duration_value(svinst, "sieve_max_cpu_time",
&period)) {
if (period > (UINT_MAX / 1000))
svinst->max_cpu_time_secs = (UINT_MAX / 1000);
else
svinst->max_cpu_time_secs = (unsigned int)period;
}
svinst->resource_usage_timeout_secs =
SIEVE_DEFAULT_RESOURCE_USAGE_TIMEOUT_SECS;
if (sieve_setting_get_duration_value(
svinst, "sieve_resource_usage_timeout", &period)) {
if (period > UINT_MAX)
svinst->resource_usage_timeout_secs = UINT_MAX;
else {
svinst->resource_usage_timeout_secs =
(unsigned int)period;
}
}
(void)sieve_address_source_parse_from_setting(
svinst, svinst->pool, "sieve_redirect_envelope_from",
&svinst->redirect_from);
svinst->redirect_duplicate_period = DEFAULT_REDIRECT_DUPLICATE_PERIOD;
if (sieve_setting_get_duration_value(
svinst, "sieve_redirect_duplicate_period", &period)) {
if (period > UINT_MAX)
svinst->redirect_duplicate_period = UINT_MAX;
else {
svinst->redirect_duplicate_period =
(unsigned int)period;
}
}
str_setting = sieve_setting_get(svinst, "sieve_user_email");
if (str_setting != NULL && *str_setting != '\0') {
struct smtp_address *address;
if (smtp_address_parse_path(
svinst->pool, str_setting,
SMTP_ADDRESS_PARSE_FLAG_BRACKETS_OPTIONAL,
&address, &error) < 0) {
e_warning(svinst->event,
"Invalid address value for setting "
"`sieve_user_email': %s", error);
} else {
svinst->user_email = address;
}
}
}
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