login-settings.c revision 383d0e8c24451468d6bea17e4b55d74de744abe6
e59faf65ce864fe95dc00f5d52b8323cdbd0608aTimo Sirainen/* Copyright (c) 2005-2009 Dovecot authors, see the included COPYING file */
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen#include "common.h"
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen#include "settings-parser.h"
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen#include "master-service-settings.h"
dd3ccdbb29dad006f7781ea138a5ba39727963c4Timo Sirainen#include "login-settings.h"
a338794c56fc9674121e262fcb67c3dc1da31436Timo Sirainen
419be6cd72f6e11705576bbba683b29c32eaa762Timo Sirainen#include <stddef.h>
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen#include <unistd.h>
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen
dd3ccdbb29dad006f7781ea138a5ba39727963c4Timo Sirainenstatic bool login_settings_check(void *_set, pool_t pool, const char **error_r);
c4390dad33b03dd51ba2a475f550347c86ebdb9aTimo Sirainen
dd3ccdbb29dad006f7781ea138a5ba39727963c4Timo Sirainen#undef DEF
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen#define DEF(type, name) \
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen { type, #name, offsetof(struct login_settings, name), NULL }
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainenstatic struct setting_define login_setting_defines[] = {
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen DEF(SET_STR, login_trusted_networks),
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen DEF(SET_STR, login_greeting),
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen DEF(SET_STR, login_log_format_elements),
458acd7b39c84bae0d18c36ff9ddff9a49b4ae4aTimo Sirainen DEF(SET_STR, login_log_format),
78a5b3e697af5db96fe0dffed600b0d6370bb8e5Timo Sirainen
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen DEF(SET_ENUM, ssl),
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen DEF(SET_STR, ssl_ca_file),
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen DEF(SET_STR, ssl_cert),
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen DEF(SET_STR, ssl_key),
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen DEF(SET_STR, ssl_key_password),
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen DEF(SET_STR, ssl_parameters_file),
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen DEF(SET_STR, ssl_cipher_list),
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen DEF(SET_STR, ssl_cert_username_field),
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen DEF(SET_BOOL, ssl_verify_client_cert),
3b22894b8805b186c73d8b754001e8d7e944be85Timo Sirainen DEF(SET_BOOL, ssl_require_client_cert),
3b22894b8805b186c73d8b754001e8d7e944be85Timo Sirainen DEF(SET_BOOL, ssl_username_from_cert),
3b22894b8805b186c73d8b754001e8d7e944be85Timo Sirainen DEF(SET_BOOL, verbose_ssl),
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen DEF(SET_BOOL, disable_plaintext_auth),
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen DEF(SET_BOOL, verbose_auth),
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen DEF(SET_BOOL, auth_debug),
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen DEF(SET_BOOL, verbose_proctitle),
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen DEF(SET_UINT, mail_max_userip_connections),
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen
89502bb187e8285b2a155559894ca80374ac3ae7Timo Sirainen SETTING_DEFINE_LIST_END
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen};
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainenstatic struct login_settings login_default_settings = {
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(login_trusted_networks) "",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(login_greeting) PACKAGE_NAME" ready.",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(login_log_format_elements) "user=<%u> method=%m rip=%r lip=%l %c",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(login_log_format) "%$: %s",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl) "yes:no:required",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_ca_file) "",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_cert) "",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_key) "",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_key_password) "",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_parameters_file) "ssl-parameters.dat",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_cipher_list) "ALL:!LOW:!SSLv2",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_cert_username_field) "commonName",
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_verify_client_cert) FALSE,
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_require_client_cert) FALSE,
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(ssl_username_from_cert) FALSE,
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(verbose_ssl) FALSE,
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(disable_plaintext_auth) TRUE,
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(verbose_auth) FALSE,
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(auth_debug) FALSE,
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen MEMBER(verbose_proctitle) FALSE,
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen MEMBER(mail_max_userip_connections) 10
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen};
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainenstruct setting_parser_info login_setting_parser_info = {
eed03830015b7138b9d4522e72bef650aa24b45fTimo Sirainen MEMBER(defines) login_setting_defines,
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen MEMBER(defaults) &login_default_settings,
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen MEMBER(type_offset) (size_t)-1,
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen MEMBER(struct_size) sizeof(struct login_settings),
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
65514ab6ccc1889e1667211fddb0cca4b51017dfTimo Sirainen MEMBER(parent_offset) (size_t)-1,
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen MEMBER(parent) NULL,
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen MEMBER(check_func) login_settings_check
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen};
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainenconst struct setting_parser_info *login_set_roots[] = {
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen &login_setting_parser_info,
65514ab6ccc1889e1667211fddb0cca4b51017dfTimo Sirainen NULL
ad5130b3afda4cf30e6272d96d818f84d3ae4e55Timo Sirainen};
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen/* <settings checks> */
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainenstatic int ssl_settings_check(void *_set ATTR_UNUSED, const char **error_r)
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen{
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen struct login_settings *set = _set;
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
ad5130b3afda4cf30e6272d96d818f84d3ae4e55Timo Sirainen#ifndef HAVE_SSL
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen *error_r = t_strdup_printf("SSL support not compiled in but ssl=%s",
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen set->ssl);
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen return FALSE;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen#else
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen if (*set->ssl_cert == '\0') {
65514ab6ccc1889e1667211fddb0cca4b51017dfTimo Sirainen *error_r = "ssl enabled, but ssl_cert not set";
65514ab6ccc1889e1667211fddb0cca4b51017dfTimo Sirainen return FALSE;
65514ab6ccc1889e1667211fddb0cca4b51017dfTimo Sirainen }
65514ab6ccc1889e1667211fddb0cca4b51017dfTimo Sirainen if (*set->ssl_key == '\0') {
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen *error_r = "ssl enabled, but ssl_key not set";
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen return FALSE;
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen }
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen if (set->ssl_verify_client_cert && *set->ssl_ca_file == '\0') {
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen *error_r = "ssl_verify_client_cert set, but ssl_ca_file not";
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen return FALSE;
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen }
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen
315ce5be539bfe8bc7777ab0654499c49583cea2Timo Sirainen#ifndef CONFIG_BINARY
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen if (*set->ssl_ca_file != '\0' && access(set->ssl_ca_file, R_OK) < 0) {
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen *error_r = t_strdup_printf("ssl_ca_file: access(%s) failed: %m",
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen set->ssl_ca_file);
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen return FALSE;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen }
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen#endif
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen return TRUE;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen#endif
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen}
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainenstatic bool login_settings_check(void *_set, pool_t pool, const char **error_r)
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen{
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen struct login_settings *set = _set;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen set->log_format_elements_split =
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen p_strsplit(pool, set->login_log_format_elements, " ");
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen if (set->ssl_require_client_cert || set->ssl_username_from_cert) {
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen /* if we require valid cert, make sure we also ask for it */
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen set->ssl_verify_client_cert = TRUE;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen }
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen if (strcmp(set->ssl, "no") == 0) {
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen /* disabled */
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen } else if (strcmp(set->ssl, "yes") == 0) {
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen if (!ssl_settings_check(set, error_r))
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen return FALSE;
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen } else if (strcmp(set->ssl, "required") == 0) {
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen if (!ssl_settings_check(set, error_r))
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen return FALSE;
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen set->disable_plaintext_auth = TRUE;
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen } else {
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen *error_r = t_strdup_printf("Unknown ssl setting value: %s",
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen set->ssl);
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen return FALSE;
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen }
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen return TRUE;
eed0a07ecb946ec9d021f5b413fb33eb36e135fdTimo Sirainen}
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen/* </settings checks> */
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainenstruct login_settings *
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainenlogin_settings_read(struct master_service *service, pool_t pool,
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen const struct ip_addr *local_ip,
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen const struct ip_addr *remote_ip)
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen{
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen struct master_service_settings_input input;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen const char *error;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen void **sets;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen struct login_settings *set;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen memset(&input, 0, sizeof(input));
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen input.roots = login_set_roots;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen input.module = "login";
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen input.service = login_protocol;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen if (local_ip != NULL)
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen input.local_ip = *local_ip;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen if (remote_ip != NULL)
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen input.remote_ip = *remote_ip;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen /* this function always clears the previous settings pool. since we're
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen doing per-connection lookups, we always need to duplicate the
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen settings using another pool. */
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen if (master_service_settings_read(service, &input, &error) < 0)
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen i_fatal("Error reading configuration: %s", error);
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen sets = master_service_settings_get_others(service);
9a935c34e98ba7a9cc90784ceb63b2fbdab4105fTimo Sirainen set = settings_dup(&login_setting_parser_info, sets[0], pool);
9a935c34e98ba7a9cc90784ceb63b2fbdab4105fTimo Sirainen if (!login_settings_check(set, pool, &error))
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen i_fatal("login_settings_check() failed: %s", error);
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen return set;
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen}
c2ebc8f28b5504f280cd5d4adfe57ed70f9a7d83Timo Sirainen