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conf.c
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conf.c
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/*
Copyright (c) 2009-2020 Roger Light <[email protected]>
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
and Eclipse Distribution License v1.0 which accompany this distribution.
The Eclipse Public License is available at
http:https://www.eclipse.org/legal/epl-v10.html
and the Eclipse Distribution License is available at
http:https://www.eclipse.org/org/documents/edl-v10.php.
Contributors:
Roger Light - initial implementation and documentation.
*/
#include "config.h"
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifdef WIN32
#else
# include <dirent.h>
# include <strings.h>
#endif
#ifndef WIN32
# include <netdb.h>
# include <sys/socket.h>
#else
# include <winsock2.h>
# include <ws2tcpip.h>
#endif
#if !defined(WIN32) && !defined(__CYGWIN__)
# include <syslog.h>
#endif
#include "mosquitto_broker_internal.h"
#include "memory_mosq.h"
#include "misc_mosq.h"
#include "tls_mosq.h"
#include "util_mosq.h"
#include "mqtt_protocol.h"
struct config_recurse {
int log_dest;
int log_dest_set;
int log_type;
int log_type_set;
unsigned long max_inflight_bytes;
unsigned long max_queued_bytes;
int max_queued_messages;
};
#if defined(WIN32) || defined(__CYGWIN__)
#include <windows.h>
extern SERVICE_STATUS_HANDLE service_handle;
#endif
static struct mosquitto__security_options *cur_security_options = NULL;
static int conf__parse_bool(char **token, const char *name, bool *value, char *saveptr);
static int conf__parse_int(char **token, const char *name, int *value, char *saveptr);
static int conf__parse_ssize_t(char **token, const char *name, ssize_t *value, char *saveptr);
static int conf__parse_string(char **token, const char *name, char **value, char *saveptr);
static int config__read_file(struct mosquitto__config *config, bool reload, const char *file, struct config_recurse *config_tmp, int level, int *lineno);
static int config__check(struct mosquitto__config *config);
static void config__cleanup_plugins(struct mosquitto__config *config);
static void conf__set_cur_security_options(struct mosquitto__config *config, struct mosquitto__listener *cur_listener, struct mosquitto__security_options **security_options)
{
if(config->per_listener_settings){
(*security_options) = &cur_listener->security_options;
}else{
(*security_options) = &config->security_options;
}
}
static int conf__attempt_resolve(const char *host, const char *text, int log, const char *msg)
{
struct addrinfo gai_hints;
struct addrinfo *gai_res;
int rc;
memset(&gai_hints, 0, sizeof(struct addrinfo));
gai_hints.ai_family = AF_UNSPEC;
gai_hints.ai_socktype = SOCK_STREAM;
gai_res = NULL;
rc = getaddrinfo(host, NULL, &gai_hints, &gai_res);
if(gai_res){
freeaddrinfo(gai_res);
}
if(rc != 0){
#ifndef WIN32
if(rc == EAI_SYSTEM){
if(errno == ENOENT){
log__printf(NULL, log, "%s: Unable to resolve %s %s.", msg, text, host);
}else{
log__printf(NULL, log, "%s: Error resolving %s: %s.", msg, text, strerror(errno));
}
}else{
log__printf(NULL, log, "%s: Error resolving %s: %s.", msg, text, gai_strerror(rc));
}
#else
if(rc == WSAHOST_NOT_FOUND){
log__printf(NULL, log, "%s: Error resolving %s.", msg, text);
}
#endif
return MOSQ_ERR_INVAL;
}
return MOSQ_ERR_SUCCESS;
}
static void config__init_reload(struct mosquitto_db *db, struct mosquitto__config *config)
{
int i;
/* Set defaults */
for(i=0; i<config->listener_count; i++){
mosquitto__free(config->listeners[i].security_options.acl_file);
config->listeners[i].security_options.acl_file = NULL;
mosquitto__free(config->listeners[i].security_options.password_file);
config->listeners[i].security_options.password_file = NULL;
mosquitto__free(config->listeners[i].security_options.psk_file);
config->listeners[i].security_options.psk_file = NULL;
config->listeners[i].security_options.allow_anonymous = -1;
config->listeners[i].security_options.allow_zero_length_clientid = true;
config->listeners[i].security_options.auto_id_prefix = NULL;
config->listeners[i].security_options.auto_id_prefix_len = 0;
}
config->allow_duplicate_messages = false;
mosquitto__free(config->security_options.acl_file);
config->security_options.acl_file = NULL;
config->security_options.allow_anonymous = -1;
config->security_options.allow_zero_length_clientid = true;
config->security_options.auto_id_prefix = NULL;
config->security_options.auto_id_prefix_len = 0;
mosquitto__free(config->security_options.password_file);
config->security_options.password_file = NULL;
mosquitto__free(config->security_options.psk_file);
config->security_options.psk_file = NULL;
config->autosave_interval = 1800;
config->autosave_on_changes = false;
mosquitto__free(config->clientid_prefixes);
config->connection_messages = true;
config->clientid_prefixes = NULL;
config->per_listener_settings = false;
if(config->log_fptr){
fclose(config->log_fptr);
config->log_fptr = NULL;
}
mosquitto__free(config->log_file);
config->log_file = NULL;
#if defined(WIN32) || defined(__CYGWIN__)
if(service_handle){
/* This is running as a Windows service. Default to no logging. Using
* stdout/stderr is forbidden because the first clients to connect will
* get log information sent to them for some reason. */
config->log_dest = MQTT3_LOG_NONE;
}else{
config->log_dest = MQTT3_LOG_STDERR;
}
#else
config->log_facility = LOG_DAEMON;
config->log_dest = MQTT3_LOG_STDERR;
if(db->verbose){
config->log_type = UINT_MAX;
}else{
config->log_type = MOSQ_LOG_ERR | MOSQ_LOG_WARNING | MOSQ_LOG_NOTICE | MOSQ_LOG_INFO;
}
#endif
config->log_timestamp = true;
mosquitto__free(config->log_timestamp_format);
config->log_timestamp_format = NULL;
config->max_keepalive = 65535;
config->max_packet_size = 0;
config->max_inflight_messages = 20;
config->persistence = false;
mosquitto__free(config->persistence_location);
config->persistence_location = NULL;
mosquitto__free(config->persistence_file);
config->persistence_file = NULL;
config->persistent_client_expiration = 0;
config->queue_qos0_messages = false;
config->retain_available = true;
config->set_tcp_nodelay = false;
config->sys_interval = 10;
config->upgrade_outgoing_qos = false;
config__cleanup_plugins(config);
}
static void config__cleanup_plugins(struct mosquitto__config *config)
{
int i, j;
struct mosquitto__auth_plugin_config *plug;
if(config->security_options.auth_plugin_configs){
for(i=0; i<config->security_options.auth_plugin_config_count; i++){
plug = &config->security_options.auth_plugin_configs[i];
mosquitto__free(plug->path);
plug->path = NULL;
if(plug->options){
for(j=0; j<plug->option_count; j++){
mosquitto__free(plug->options[j].key);
mosquitto__free(plug->options[j].value);
}
mosquitto__free(plug->options);
plug->options = NULL;
plug->option_count = 0;
}
}
mosquitto__free(config->security_options.auth_plugin_configs);
config->security_options.auth_plugin_configs = NULL;
}
}
void config__init(struct mosquitto_db *db, struct mosquitto__config *config)
{
memset(config, 0, sizeof(struct mosquitto__config));
config__init_reload(db, config);
config->daemon = false;
memset(&config->default_listener, 0, sizeof(struct mosquitto__listener));
config->default_listener.max_connections = -1;
config->default_listener.protocol = mp_mqtt;
config->default_listener.security_options.allow_anonymous = -1;
config->default_listener.security_options.allow_zero_length_clientid = true;
config->default_listener.maximum_qos = 2;
config->default_listener.max_topic_alias = 10;
}
void config__cleanup(struct mosquitto__config *config)
{
int i;
#ifdef WITH_BRIDGE
int j;
#endif
mosquitto__free(config->clientid_prefixes);
mosquitto__free(config->persistence_location);
mosquitto__free(config->persistence_file);
mosquitto__free(config->persistence_filepath);
mosquitto__free(config->security_options.auto_id_prefix);
mosquitto__free(config->security_options.acl_file);
mosquitto__free(config->security_options.password_file);
mosquitto__free(config->security_options.psk_file);
mosquitto__free(config->pid_file);
mosquitto__free(config->user);
mosquitto__free(config->log_timestamp_format);
if(config->listeners){
for(i=0; i<config->listener_count; i++){
mosquitto__free(config->listeners[i].host);
mosquitto__free(config->listeners[i].bind_interface);
mosquitto__free(config->listeners[i].mount_point);
mosquitto__free(config->listeners[i].socks);
mosquitto__free(config->listeners[i].security_options.auto_id_prefix);
mosquitto__free(config->listeners[i].security_options.acl_file);
mosquitto__free(config->listeners[i].security_options.password_file);
mosquitto__free(config->listeners[i].security_options.psk_file);
#ifdef WITH_TLS
mosquitto__free(config->listeners[i].cafile);
mosquitto__free(config->listeners[i].capath);
mosquitto__free(config->listeners[i].certfile);
mosquitto__free(config->listeners[i].keyfile);
mosquitto__free(config->listeners[i].ciphers);
mosquitto__free(config->listeners[i].psk_hint);
mosquitto__free(config->listeners[i].crlfile);
mosquitto__free(config->listeners[i].dhparamfile);
mosquitto__free(config->listeners[i].tls_version);
mosquitto__free(config->listeners[i].tls_engine);
mosquitto__free(config->listeners[i].tls_engine_kpass_sha1);
#ifdef WITH_WEBSOCKETS
if(!config->listeners[i].ws_context) /* libwebsockets frees its own SSL_CTX */
#endif
{
SSL_CTX_free(config->listeners[i].ssl_ctx);
}
#endif
#ifdef WITH_WEBSOCKETS
mosquitto__free(config->listeners[i].http_dir);
#endif
}
mosquitto__free(config->listeners);
}
#ifdef WITH_BRIDGE
if(config->bridges){
for(i=0; i<config->bridge_count; i++){
mosquitto__free(config->bridges[i].name);
if(config->bridges[i].addresses){
for(j=0; j<config->bridges[i].address_count; j++){
mosquitto__free(config->bridges[i].addresses[j].address);
}
mosquitto__free(config->bridges[i].addresses);
}
mosquitto__free(config->bridges[i].remote_clientid);
mosquitto__free(config->bridges[i].remote_username);
mosquitto__free(config->bridges[i].remote_password);
mosquitto__free(config->bridges[i].local_clientid);
mosquitto__free(config->bridges[i].local_username);
mosquitto__free(config->bridges[i].local_password);
if(config->bridges[i].topics){
for(j=0; j<config->bridges[i].topic_count; j++){
mosquitto__free(config->bridges[i].topics[j].topic);
mosquitto__free(config->bridges[i].topics[j].local_prefix);
mosquitto__free(config->bridges[i].topics[j].remote_prefix);
mosquitto__free(config->bridges[i].topics[j].local_topic);
mosquitto__free(config->bridges[i].topics[j].remote_topic);
}
mosquitto__free(config->bridges[i].topics);
}
mosquitto__free(config->bridges[i].notification_topic);
#ifdef WITH_TLS
mosquitto__free(config->bridges[i].tls_version);
mosquitto__free(config->bridges[i].tls_cafile);
mosquitto__free(config->bridges[i].tls_alpn);
#ifdef FINAL_WITH_TLS_PSK
mosquitto__free(config->bridges[i].tls_psk_identity);
mosquitto__free(config->bridges[i].tls_psk);
#endif
#endif
}
mosquitto__free(config->bridges);
}
#endif
config__cleanup_plugins(config);
if(config->log_fptr){
fclose(config->log_fptr);
config->log_fptr = NULL;
}
if(config->log_file){
mosquitto__free(config->log_file);
config->log_file = NULL;
}
}
static void print_usage(void)
{
printf("mosquitto version %s\n\n", VERSION);
printf("mosquitto is an MQTT v5.0/v3.1.1/v3.1 broker.\n\n");
printf("Usage: mosquitto [-c config_file] [-d] [-h] [-p port]\n\n");
printf(" -c : specify the broker config file.\n");
printf(" -d : put the broker into the background after starting.\n");
printf(" -h : display this help.\n");
printf(" -p : start the broker listening on the specified port.\n");
printf(" Not recommended in conjunction with the -c option.\n");
printf(" -v : verbose mode - enable all logging types. This overrides\n");
printf(" any logging options given in the config file.\n");
printf("\nSee https://mosquitto.org/ for more information.\n\n");
}
int config__parse_args(struct mosquitto_db *db, struct mosquitto__config *config, int argc, char *argv[])
{
int i;
int port_tmp;
for(i=1; i<argc; i++){
if(!strcmp(argv[i], "-c") || !strcmp(argv[i], "--config-file")){
if(i<argc-1){
db->config_file = argv[i+1];
if(config__read(db, config, false)){
return MOSQ_ERR_INVAL;
}
}else{
log__printf(NULL, MOSQ_LOG_ERR, "Error: -c argument given, but no config file specified.");
return MOSQ_ERR_INVAL;
}
i++;
}else if(!strcmp(argv[i], "-d") || !strcmp(argv[i], "--daemon")){
config->daemon = true;
}else if(!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")){
print_usage();
return MOSQ_ERR_INVAL;
}else if(!strcmp(argv[i], "-p") || !strcmp(argv[i], "--port")){
if(i<argc-1){
port_tmp = atoi(argv[i+1]);
if(port_tmp<1 || port_tmp>65535){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Invalid port specified (%d).", port_tmp);
return MOSQ_ERR_INVAL;
}else{
if(config->default_listener.port){
log__printf(NULL, MOSQ_LOG_WARNING, "Warning: Default listener port specified multiple times. Only the latest will be used.");
}
config->default_listener.port = port_tmp;
}
}else{
log__printf(NULL, MOSQ_LOG_ERR, "Error: -p argument given, but no port specified.");
return MOSQ_ERR_INVAL;
}
i++;
}else if(!strcmp(argv[i], "-v") || !strcmp(argv[i], "--verbose")){
db->verbose = true;
}else{
fprintf(stderr, "Error: Unknown option '%s'.\n",argv[i]);
print_usage();
return MOSQ_ERR_INVAL;
}
}
if(config->listener_count == 0
|| config->default_listener.bind_interface
#ifdef WITH_TLS
|| config->default_listener.cafile
|| config->default_listener.capath
|| config->default_listener.certfile
|| config->default_listener.keyfile
|| config->default_listener.tls_engine
|| config->default_listener.tls_keyform != mosq_k_pem
|| config->default_listener.tls_engine_kpass_sha1
|| config->default_listener.ciphers
|| config->default_listener.dhparamfile
|| config->default_listener.psk_hint
|| config->default_listener.require_certificate
|| config->default_listener.crlfile
|| config->default_listener.use_identity_as_username
|| config->default_listener.use_subject_as_username
#endif
|| config->default_listener.use_username_as_clientid
|| config->default_listener.host
|| config->default_listener.port
|| config->default_listener.max_connections != -1
|| config->default_listener.maximum_qos != 2
|| config->default_listener.mount_point
|| config->default_listener.protocol != mp_mqtt
|| config->default_listener.socket_domain
|| config->default_listener.security_options.password_file
|| config->default_listener.security_options.psk_file
|| config->default_listener.security_options.auth_plugin_config_count
|| config->default_listener.security_options.allow_anonymous != -1
|| config->default_listener.security_options.allow_zero_length_clientid != true
){
config->listener_count++;
config->listeners = mosquitto__realloc(config->listeners, sizeof(struct mosquitto__listener)*config->listener_count);
if(!config->listeners){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}
memset(&config->listeners[config->listener_count-1], 0, sizeof(struct mosquitto__listener));
if(config->default_listener.port){
config->listeners[config->listener_count-1].port = config->default_listener.port;
}else{
config->listeners[config->listener_count-1].port = 1883;
}
if(config->default_listener.host){
config->listeners[config->listener_count-1].host = config->default_listener.host;
}else{
config->listeners[config->listener_count-1].host = NULL;
}
if(config->default_listener.mount_point){
config->listeners[config->listener_count-1].mount_point = config->default_listener.mount_point;
}else{
config->listeners[config->listener_count-1].mount_point = NULL;
}
config->listeners[config->listener_count-1].bind_interface = config->default_listener.bind_interface;
config->listeners[config->listener_count-1].max_connections = config->default_listener.max_connections;
config->listeners[config->listener_count-1].protocol = config->default_listener.protocol;
config->listeners[config->listener_count-1].socket_domain = config->default_listener.socket_domain;
config->listeners[config->listener_count-1].client_count = 0;
config->listeners[config->listener_count-1].socks = NULL;
config->listeners[config->listener_count-1].sock_count = 0;
config->listeners[config->listener_count-1].client_count = 0;
config->listeners[config->listener_count-1].use_username_as_clientid = config->default_listener.use_username_as_clientid;
config->listeners[config->listener_count-1].maximum_qos = config->default_listener.maximum_qos;
config->listeners[config->listener_count-1].max_topic_alias = config->default_listener.max_topic_alias;
#ifdef WITH_TLS
config->listeners[config->listener_count-1].tls_version = config->default_listener.tls_version;
config->listeners[config->listener_count-1].tls_engine = config->default_listener.tls_engine;
config->listeners[config->listener_count-1].tls_keyform = config->default_listener.tls_keyform;
config->listeners[config->listener_count-1].tls_engine_kpass_sha1 = config->default_listener.tls_engine_kpass_sha1;
config->listeners[config->listener_count-1].cafile = config->default_listener.cafile;
config->listeners[config->listener_count-1].capath = config->default_listener.capath;
config->listeners[config->listener_count-1].certfile = config->default_listener.certfile;
config->listeners[config->listener_count-1].keyfile = config->default_listener.keyfile;
config->listeners[config->listener_count-1].ciphers = config->default_listener.ciphers;
config->listeners[config->listener_count-1].dhparamfile = config->default_listener.dhparamfile;
config->listeners[config->listener_count-1].psk_hint = config->default_listener.psk_hint;
config->listeners[config->listener_count-1].require_certificate = config->default_listener.require_certificate;
config->listeners[config->listener_count-1].ssl_ctx = NULL;
config->listeners[config->listener_count-1].crlfile = config->default_listener.crlfile;
config->listeners[config->listener_count-1].use_identity_as_username = config->default_listener.use_identity_as_username;
config->listeners[config->listener_count-1].use_subject_as_username = config->default_listener.use_subject_as_username;
#endif
config->listeners[config->listener_count-1].security_options.acl_file = config->default_listener.security_options.acl_file;
config->listeners[config->listener_count-1].security_options.password_file = config->default_listener.security_options.password_file;
config->listeners[config->listener_count-1].security_options.psk_file = config->default_listener.security_options.psk_file;
config->listeners[config->listener_count-1].security_options.auth_plugin_configs = config->default_listener.security_options.auth_plugin_configs;
config->listeners[config->listener_count-1].security_options.auth_plugin_config_count = config->default_listener.security_options.auth_plugin_config_count;
config->listeners[config->listener_count-1].security_options.allow_anonymous = config->default_listener.security_options.allow_anonymous;
config->listeners[config->listener_count-1].security_options.allow_zero_length_clientid = config->default_listener.security_options.allow_zero_length_clientid;
}
/* Default to drop to mosquitto user if we are privileged and no user specified. */
if(!config->user){
config->user = mosquitto__strdup("mosquitto");
if(config->user == NULL){
return MOSQ_ERR_NOMEM;
}
}
if(db->verbose){
config->log_type = UINT_MAX;
}
return config__check(config);
}
void config__copy(struct mosquitto__config *src, struct mosquitto__config *dest)
{
mosquitto__free(dest->security_options.acl_file);
dest->security_options.acl_file = src->security_options.acl_file;
dest->security_options.allow_anonymous = src->security_options.allow_anonymous;
dest->security_options.allow_zero_length_clientid = src->security_options.allow_zero_length_clientid;
mosquitto__free(dest->security_options.auto_id_prefix);
dest->security_options.auto_id_prefix = src->security_options.auto_id_prefix;
dest->security_options.auto_id_prefix_len = src->security_options.auto_id_prefix_len;
mosquitto__free(dest->security_options.password_file);
dest->security_options.password_file = src->security_options.password_file;
mosquitto__free(dest->security_options.psk_file);
dest->security_options.psk_file = src->security_options.psk_file;
dest->allow_duplicate_messages = src->allow_duplicate_messages;
dest->autosave_interval = src->autosave_interval;
dest->autosave_on_changes = src->autosave_on_changes;
mosquitto__free(dest->clientid_prefixes);
dest->clientid_prefixes = src->clientid_prefixes;
dest->connection_messages = src->connection_messages;
dest->log_dest = src->log_dest;
dest->log_facility = src->log_facility;
dest->log_type = src->log_type;
dest->log_timestamp = src->log_timestamp;
mosquitto__free(dest->log_timestamp_format);
dest->log_timestamp_format = src->log_timestamp_format;
mosquitto__free(dest->log_file);
dest->log_file = src->log_file;
dest->message_size_limit = src->message_size_limit;
dest->persistence = src->persistence;
mosquitto__free(dest->persistence_location);
dest->persistence_location = src->persistence_location;
mosquitto__free(dest->persistence_file);
dest->persistence_file = src->persistence_file;
mosquitto__free(dest->persistence_filepath);
dest->persistence_filepath = src->persistence_filepath;
dest->persistent_client_expiration = src->persistent_client_expiration;
dest->queue_qos0_messages = src->queue_qos0_messages;
dest->sys_interval = src->sys_interval;
dest->upgrade_outgoing_qos = src->upgrade_outgoing_qos;
#ifdef WITH_WEBSOCKETS
dest->websockets_log_level = src->websockets_log_level;
#endif
}
int config__read(struct mosquitto_db *db, struct mosquitto__config *config, bool reload)
{
int rc = MOSQ_ERR_SUCCESS;
struct config_recurse cr;
int lineno = 0;
#ifdef WITH_PERSISTENCE
int len;
#endif
struct mosquitto__config config_reload;
struct mosquitto__auth_plugin *plugin;
int i, j;
if(reload){
memset(&config_reload, 0, sizeof(struct mosquitto__config));
}
cr.log_dest = MQTT3_LOG_NONE;
cr.log_dest_set = 0;
cr.log_type = MOSQ_LOG_NONE;
cr.log_type_set = 0;
cr.max_inflight_bytes = 0;
cr.max_queued_bytes = 0;
cr.max_queued_messages = 100;
if(!db->config_file) return 0;
if(reload){
/* Re-initialise appropriate config vars to default for reload. */
config__init_reload(db, &config_reload);
config_reload.listeners = config->listeners;
config_reload.listener_count = config->listener_count;
cur_security_options = NULL;
rc = config__read_file(&config_reload, reload, db->config_file, &cr, 0, &lineno);
}else{
rc = config__read_file(config, reload, db->config_file, &cr, 0, &lineno);
}
if(rc){
if(lineno > 0){
log__printf(NULL, MOSQ_LOG_ERR, "Error found at %s:%d.", db->config_file, lineno);
}
return rc;
}
if(reload){
config__copy(&config_reload, config);
}
/* If auth/access options are set and allow_anonymous not explicitly set, disallow anon. */
if(config->per_listener_settings){
for(i=0; i<config->listener_count; i++){
if(config->listeners[i].security_options.allow_anonymous == -1){
/* Default option if no security options set */
config->listeners[i].security_options.allow_anonymous = true;
if(config->listeners[i].security_options.password_file
|| config->listeners[i].security_options.psk_file){
/* allow_anonymous not set explicitly, some other security options
* have been set - so disable allow_anonymous
*/
config->listeners[i].security_options.allow_anonymous = false;
}
/* Check plugins loaded to see if they have username/password checks enabled */
for(j=0; j<config->listeners[i].security_options.auth_plugin_config_count; j++){
plugin = &config->listeners[i].security_options.auth_plugin_configs[j].plugin;
if(plugin->version == 3 || plugin->version == 2){
/* Version 2 and 3 always have username/password checks */
config->listeners[i].security_options.allow_anonymous = false;
break;
}else{
/* Version 4 has optional unpwd checks. */
if(plugin->unpwd_check_v4 != NULL){
config->listeners[i].security_options.allow_anonymous = false;
break;
}
}
}
}
}
}else{
if(config->security_options.allow_anonymous == -1){
/* Default option if no security options set */
config->security_options.allow_anonymous = true;
if(config->security_options.password_file
|| config->security_options.psk_file){
/* allow_anonymous not set explicitly, some other security options
* have been set - so disable allow_anonymous
*/
config->security_options.allow_anonymous = false;
}
/* Check plugins loaded to see if they have username/password checks enabled */
for(j=0; j<config->security_options.auth_plugin_config_count; j++){
plugin = &config->security_options.auth_plugin_configs[j].plugin;
if(plugin->version == 3 || plugin->version == 2){
/* Version 2 and 3 always have username/password checks */
config->security_options.allow_anonymous = false;
break;
}else{
/* Version 4 has optional unpwd checks. */
if(plugin->unpwd_check_v4 != NULL){
config->security_options.allow_anonymous = false;
break;
}
}
}
}
}
#ifdef WITH_PERSISTENCE
if(config->persistence){
if(!config->persistence_file){
config->persistence_file = mosquitto__strdup("mosquitto.db");
if(!config->persistence_file) return MOSQ_ERR_NOMEM;
}
mosquitto__free(config->persistence_filepath);
if(config->persistence_location && strlen(config->persistence_location)){
len = strlen(config->persistence_location) + strlen(config->persistence_file) + 1;
config->persistence_filepath = mosquitto__malloc(len);
if(!config->persistence_filepath) return MOSQ_ERR_NOMEM;
snprintf(config->persistence_filepath, len, "%s%s", config->persistence_location, config->persistence_file);
}else{
config->persistence_filepath = mosquitto__strdup(config->persistence_file);
if(!config->persistence_filepath) return MOSQ_ERR_NOMEM;
}
}
#endif
/* Default to drop to mosquitto user if no other user specified. This must
* remain here even though it is covered in config__parse_args() because this
* function may be called on its own. */
if(!config->user){
config->user = mosquitto__strdup("mosquitto");
}
db__limits_set(cr.max_inflight_bytes, cr.max_queued_messages, cr.max_queued_bytes);
#ifdef WITH_BRIDGE
for(i=0; i<config->bridge_count; i++){
if(!config->bridges[i].name || !config->bridges[i].addresses || !config->bridges[i].topic_count){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Invalid bridge configuration.");
return MOSQ_ERR_INVAL;
}
#ifdef FINAL_WITH_TLS_PSK
if(config->bridges[i].tls_psk && !config->bridges[i].tls_psk_identity){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Invalid bridge configuration: missing bridge_identity.");
return MOSQ_ERR_INVAL;
}
if(config->bridges[i].tls_psk_identity && !config->bridges[i].tls_psk){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Invalid bridge configuration: missing bridge_psk.");
return MOSQ_ERR_INVAL;
}
#endif
}
#endif
if(cr.log_dest_set){
config->log_dest = cr.log_dest;
}
if(db->verbose){
config->log_type = UINT_MAX;
}else if(cr.log_type_set){
config->log_type = cr.log_type;
}
return MOSQ_ERR_SUCCESS;
}
static int config__create_bridge_remap_topic(const char *prefix, const char *topic, char **remap_topic)
{
int len;
if(prefix){
if(topic){
len = strlen(topic) + strlen(prefix)+1;
*remap_topic = mosquitto__malloc(len+1);
if(!(*remap_topic)){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}
snprintf(*remap_topic, len+1, "%s%s", prefix, topic);
(*remap_topic)[len] = '\0';
}else{
*remap_topic = mosquitto__strdup(prefix);
if(!(*remap_topic)){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}
}
}else{
*remap_topic = mosquitto__strdup(topic);
if(!(*remap_topic)){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}
}
return MOSQ_ERR_SUCCESS;
}
static int config__create_bridge_prefix(char **prefix, const char *topic, const char *token, const char *direction)
{
int len;
if(topic){
len = strlen(topic) + strlen(token) + 1;
}else{
len = strlen(token) + 1;
}
*prefix = malloc(len);
if(*prefix == NULL){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}
if(topic){
/* Print prefix+pattern to check for validity */
snprintf(*prefix, len, "%s%s", token, topic);
}else{
snprintf(*prefix, len, "%s", token);
}
if(mosquitto_sub_topic_check(*prefix) != MOSQ_ERR_SUCCESS){
log__printf(NULL, MOSQ_LOG_ERR,
"Error: Invalid bridge topic %s prefix and pattern combination '%s'.",
direction, *prefix);
return MOSQ_ERR_INVAL;
}
/* Print just the prefix for storage */
snprintf(*prefix, len, "%s", token);
return MOSQ_ERR_SUCCESS;
}
int config__read_file_core(struct mosquitto__config *config, bool reload, struct config_recurse *cr, int level, int *lineno, FILE *fptr, char **buf, int *buflen)
{
int rc;
char *token;
int tmp_int;
char *saveptr = NULL;
#ifdef WITH_BRIDGE
char *tmp_char;
struct mosquitto__bridge *cur_bridge = NULL;
struct mosquitto__bridge_topic *cur_topic;
#endif
struct mosquitto__auth_plugin_config *cur_auth_plugin_config = NULL;
time_t expiration_mult;
char *key;
struct mosquitto__listener *cur_listener = &config->default_listener;
int i;
int lineno_ext = 0;
char **files;
int file_count;
char *kpass_sha = NULL, *kpass_sha_bin = NULL;
char *keyform ;
*lineno = 0;
while(fgets_extending(buf, buflen, fptr)){
(*lineno)++;
if((*buf)[0] != '#' && (*buf)[0] != 10 && (*buf)[0] != 13){
while((*buf)[strlen((*buf))-1] == 10 || (*buf)[strlen((*buf))-1] == 13){
(*buf)[strlen((*buf))-1] = 0;
}
token = strtok_r((*buf), " ", &saveptr);
if(token){
if(!strcmp(token, "acl_file")){
conf__set_cur_security_options(config, cur_listener, &cur_security_options);
if(reload){
mosquitto__free(cur_security_options->acl_file);
cur_security_options->acl_file = NULL;
}
if(conf__parse_string(&token, "acl_file", &cur_security_options->acl_file, saveptr)) return MOSQ_ERR_INVAL;
}else if(!strcmp(token, "address") || !strcmp(token, "addresses")){
#ifdef WITH_BRIDGE
if(reload) continue; /* FIXME */
if(!cur_bridge || cur_bridge->addresses){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Invalid bridge configuration.");
return MOSQ_ERR_INVAL;
}
while((token = strtok_r(NULL, " ", &saveptr))){
if (token[0] == '#'){
break;
}
cur_bridge->address_count++;
cur_bridge->addresses = mosquitto__realloc(cur_bridge->addresses, sizeof(struct bridge_address)*cur_bridge->address_count);
if(!cur_bridge->addresses){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}
cur_bridge->addresses[cur_bridge->address_count-1].address = token;
}
for(i=0; i<cur_bridge->address_count; i++){
/* cur_bridge->addresses[i].address is now
* "address[:port]". If address is an IPv6 address,
* then port is required. We must check for the :
* backwards. */
tmp_char = strrchr(cur_bridge->addresses[i].address, ':');
if(tmp_char){
/* Remove ':', so cur_bridge->addresses[i].address
* now just looks like the address. */
tmp_char[0] = '\0';
/* The remainder of the string */
tmp_int = atoi(&tmp_char[1]);
if(tmp_int < 1 || tmp_int > 65535){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Invalid port value (%d).", tmp_int);
return MOSQ_ERR_INVAL;
}
cur_bridge->addresses[i].port = tmp_int;
}else{
cur_bridge->addresses[i].port = 1883;
}
/* This looks a bit weird, but isn't. Before this
* call, cur_bridge->addresses[i].address points
* to the tokenised part of the line, it will be
* reused in a future parse of a config line so we
* must duplicate it. */
cur_bridge->addresses[i].address = mosquitto__strdup(cur_bridge->addresses[i].address);
conf__attempt_resolve(cur_bridge->addresses[i].address, "bridge address", MOSQ_LOG_WARNING, "Warning");
}
if(cur_bridge->address_count == 0){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Empty address value in configuration.");
return MOSQ_ERR_INVAL;
}
#else
log__printf(NULL, MOSQ_LOG_WARNING, "Warning: Bridge support not available.");
#endif
}else if(!strcmp(token, "allow_anonymous")){
conf__set_cur_security_options(config, cur_listener, &cur_security_options);
if(conf__parse_bool(&token, "allow_anonymous", (bool *)&cur_security_options->allow_anonymous, saveptr)) return MOSQ_ERR_INVAL;
}else if(!strcmp(token, "allow_duplicate_messages")){
if(conf__parse_bool(&token, "allow_duplicate_messages", &config->allow_duplicate_messages, saveptr)) return MOSQ_ERR_INVAL;
}else if(!strcmp(token, "allow_zero_length_clientid")){
conf__set_cur_security_options(config, cur_listener, &cur_security_options);
if(conf__parse_bool(&token, "allow_zero_length_clientid", &cur_security_options->allow_zero_length_clientid, saveptr)) return MOSQ_ERR_INVAL;
}else if(!strncmp(token, "auth_opt_", 9)){
if(reload) continue; /* Auth plugin not currently valid for reloading. */
if(!cur_auth_plugin_config){
log__printf(NULL, MOSQ_LOG_ERR, "Error: An auth_opt_ option exists in the config file without an auth_plugin.");
return MOSQ_ERR_INVAL;
}
if(strlen(token) < 12){
/* auth_opt_ == 9, + one digit key == 10, + one space == 11, + one value == 12 */
log__printf(NULL, MOSQ_LOG_ERR, "Error: Invalid auth_opt_ config option.");
return MOSQ_ERR_INVAL;
}
key = mosquitto__strdup(&token[9]);
if(!key){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}else if(STREMPTY(key)){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Invalid auth_opt_ config option.");
mosquitto__free(key);
return MOSQ_ERR_INVAL;
}
token += 9+strlen(key)+1;
while(token[0] == ' ' || token[0] == '\t'){
token++;
}
if(token[0]){
cur_auth_plugin_config->option_count++;
cur_auth_plugin_config->options = mosquitto__realloc(cur_auth_plugin_config->options, cur_auth_plugin_config->option_count*sizeof(struct mosquitto_auth_opt));
if(!cur_auth_plugin_config->options){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
mosquitto__free(key);
return MOSQ_ERR_NOMEM;
}
cur_auth_plugin_config->options[cur_auth_plugin_config->option_count-1].key = key;
cur_auth_plugin_config->options[cur_auth_plugin_config->option_count-1].value = mosquitto__strdup(token);
if(!cur_auth_plugin_config->options[cur_auth_plugin_config->option_count-1].value){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}
}else{
log__printf(NULL, MOSQ_LOG_ERR, "Error: Empty %s value in configuration.", key);
mosquitto__free(key);
return MOSQ_ERR_INVAL;
}
}else if(!strcmp(token, "auth_plugin")){
if(reload) continue; /* Auth plugin not currently valid for reloading. */
conf__set_cur_security_options(config, cur_listener, &cur_security_options);
cur_security_options->auth_plugin_configs = mosquitto__realloc(cur_security_options->auth_plugin_configs, (cur_security_options->auth_plugin_config_count+1)*sizeof(struct mosquitto__auth_plugin_config));
if(!cur_security_options->auth_plugin_configs){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}
cur_auth_plugin_config = &cur_security_options->auth_plugin_configs[cur_security_options->auth_plugin_config_count];
memset(cur_auth_plugin_config, 0, sizeof(struct mosquitto__auth_plugin_config));
cur_auth_plugin_config->path = NULL;
cur_auth_plugin_config->options = NULL;
cur_auth_plugin_config->option_count = 0;
cur_auth_plugin_config->deny_special_chars = true;
cur_security_options->auth_plugin_config_count++;
if(conf__parse_string(&token, "auth_plugin", &cur_auth_plugin_config->path, saveptr)) return MOSQ_ERR_INVAL;
}else if(!strcmp(token, "auth_plugin_deny_special_chars")){
if(reload) continue; /* Auth plugin not currently valid for reloading. */
if(!cur_auth_plugin_config){
log__printf(NULL, MOSQ_LOG_ERR, "Error: An auth_plugin_deny_special_chars option exists in the config file without an auth_plugin.");
return MOSQ_ERR_INVAL;
}
if(conf__parse_bool(&token, "auth_plugin_deny_special_chars", &cur_auth_plugin_config->deny_special_chars, saveptr)) return MOSQ_ERR_INVAL;