846 lines
22 KiB
C
846 lines
22 KiB
C
/*
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Copyright (c) 2014 Roger Light <roger@atchoo.org>
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All rights reserved. This program and the accompanying materials
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are made available under the terms of the Eclipse Public License v1.0
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and Eclipse Distribution License v1.0 which accompany this distribution.
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The Eclipse Public License is available at
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http://www.eclipse.org/legal/epl-v10.html
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and the Eclipse Distribution License is available at
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http://www.eclipse.org/org/documents/edl-v10.php.
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Contributors:
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Roger Light - initial implementation and documentation.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef WIN32
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#include <unistd.h>
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#else
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#include <process.h>
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#include <winsock2.h>
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#define snprintf sprintf_s
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#endif
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#include <mosquitto.h>
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#include "client_shared.h"
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static int mosquitto__parse_socks_url(struct mosq_config *cfg, char *url);
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static int client_config_line_proc(struct mosq_config *cfg, int pub_or_sub, int argc, char *argv[]);
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void init_config(struct mosq_config *cfg)
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{
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memset(cfg, 0, sizeof(*cfg));
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cfg->port = 1883;
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cfg->max_inflight = 20;
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cfg->keepalive = 60;
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cfg->clean_session = true;
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cfg->eol = true;
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}
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int client_config_load(struct mosq_config *cfg, int pub_or_sub, int argc, char *argv[])
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{
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int rc;
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FILE *fptr;
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char line[1024];
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int count;
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#ifndef WIN32
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char *env;
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char *loc = NULL;
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int len;
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char *args[3];
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args[0] = NULL;
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#endif
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init_config(cfg);
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/* Default config file */
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#ifndef WIN32
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env = getenv("XDG_CONFIG_HOME");
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if(env){
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len = strlen(env) + strlen("/mosquitto_pub") + 1;
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loc = malloc(len);
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if(pub_or_sub == CLIENT_PUB){
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snprintf(loc, len, "%s/mosquitto_pub", env);
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}else{
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snprintf(loc, len, "%s/mosquitto_sub", env);
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}
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loc[len-1] = '\0';
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}else{
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env = getenv("HOME");
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if(env){
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len = strlen(env) + strlen("/.config/mosquitto_pub") + 1;
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loc = malloc(len);
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if(pub_or_sub == CLIENT_PUB){
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snprintf(loc, len, "%s/.config/mosquitto_pub", env);
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}else{
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snprintf(loc, len, "%s/.config/mosquitto_sub", env);
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}
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loc[len-1] = '\0';
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}else{
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fprintf(stderr, "Warning: Unable to locate configuration directory, default config not loaded.\n");
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}
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}
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if(loc){
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fptr = fopen(loc, "rt");
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if(fptr){
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while(fgets(line, 1024, fptr)){
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if(line[0] == '#') continue; /* Comments */
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while(line[strlen(line)-1] == 10 || line[strlen(line)-1] == 13){
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line[strlen(line)-1] = 0;
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}
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/* All offset by one "args" here, because real argc/argv has
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* program name as the first entry. */
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args[1] = strtok(line, " ");
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if(args[1]){
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args[2] = strtok(NULL, " ");
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if(args[2]){
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count = 3;
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}else{
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count = 2;
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}
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rc = client_config_line_proc(cfg, pub_or_sub, count, args);
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if(rc){
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fclose(fptr);
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free(loc);
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return rc;
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}
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}
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}
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fclose(fptr);
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}
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free(loc);
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}
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#else
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// FIXME - config file support
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#endif
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/* Deal with real argc/argv */
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rc = client_config_line_proc(cfg, pub_or_sub, argc, argv);
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if(rc) return rc;
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if(cfg->will_payload && !cfg->will_topic){
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fprintf(stderr, "Error: Will payload given, but no will topic given.\n");
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return 1;
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}
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if(cfg->will_retain && !cfg->will_topic){
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fprintf(stderr, "Error: Will retain given, but no will topic given.\n");
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return 1;
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}
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if(cfg->password && !cfg->username){
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if(!cfg->quiet) fprintf(stderr, "Warning: Not using password since username not set.\n");
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}
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#ifdef WITH_TLS
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if((cfg->certfile && !cfg->keyfile) || (cfg->keyfile && !cfg->certfile)){
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fprintf(stderr, "Error: Both certfile and keyfile must be provided if one of them is.\n");
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return 1;
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}
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#endif
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#ifdef WITH_TLS_PSK
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if((cfg->cafile || cfg->capath) && cfg->psk){
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if(!cfg->quiet) fprintf(stderr, "Error: Only one of --psk or --cafile/--capath may be used at once.\n");
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return 1;
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}
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if(cfg->psk && !cfg->psk_identity){
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if(!cfg->quiet) fprintf(stderr, "Error: --psk-identity required if --psk used.\n");
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return 1;
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}
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#endif
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if(pub_or_sub == CLIENT_SUB){
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if(cfg->clean_session == false && (cfg->id_prefix || !cfg->id)){
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if(!cfg->quiet) fprintf(stderr, "Error: You must provide a client id if you are using the -c option.\n");
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return 1;
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}
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if(cfg->topic_count == 0){
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if(!cfg->quiet) fprintf(stderr, "Error: You must specify a topic to subscribe to.\n");
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return 1;
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}
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}
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if(!cfg->host){
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cfg->host = "localhost";
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}
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return MOSQ_ERR_SUCCESS;
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}
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/* Process a tokenised single line from a file or set of real argc/argv */
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int client_config_line_proc(struct mosq_config *cfg, int pub_or_sub, int argc, char *argv[])
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{
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int i;
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for(i=1; i<argc; i++){
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if(!strcmp(argv[i], "-p") || !strcmp(argv[i], "--port")){
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if(i==argc-1){
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fprintf(stderr, "Error: -p argument given but no port specified.\n\n");
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return 1;
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}else{
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cfg->port = atoi(argv[i+1]);
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if(cfg->port<1 || cfg->port>65535){
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fprintf(stderr, "Error: Invalid port given: %d\n", cfg->port);
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return 1;
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}
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}
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i++;
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}else if(!strcmp(argv[i], "-1") || !strcmp(argv[i], "--oneshot")){
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if(pub_or_sub == CLIENT_PUB){
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goto unknown_option;
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}else{
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cfg->oneshot = true;
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}
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}else if(!strcmp(argv[i], "-A")){
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if(i==argc-1){
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fprintf(stderr, "Error: -A argument given but no address specified.\n\n");
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return 1;
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}else{
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cfg->bind_address = strdup(argv[i+1]);
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}
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i++;
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#ifdef WITH_TLS
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}else if(!strcmp(argv[i], "--cafile")){
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if(i==argc-1){
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fprintf(stderr, "Error: --cafile argument given but no file specified.\n\n");
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return 1;
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}else{
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cfg->cafile = strdup(argv[i+1]);
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}
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i++;
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}else if(!strcmp(argv[i], "--capath")){
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if(i==argc-1){
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fprintf(stderr, "Error: --capath argument given but no directory specified.\n\n");
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return 1;
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}else{
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cfg->capath = strdup(argv[i+1]);
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}
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i++;
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}else if(!strcmp(argv[i], "--cert")){
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if(i==argc-1){
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fprintf(stderr, "Error: --cert argument given but no file specified.\n\n");
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return 1;
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}else{
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cfg->certfile = strdup(argv[i+1]);
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}
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i++;
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}else if(!strcmp(argv[i], "--ciphers")){
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if(i==argc-1){
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fprintf(stderr, "Error: --ciphers argument given but no ciphers specified.\n\n");
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return 1;
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}else{
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cfg->ciphers = strdup(argv[i+1]);
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}
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i++;
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#endif
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}else if(!strcmp(argv[i], "-d") || !strcmp(argv[i], "--debug")){
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cfg->debug = true;
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}else if(!strcmp(argv[i], "-f") || !strcmp(argv[i], "--file")){
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if(pub_or_sub == CLIENT_SUB){
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goto unknown_option;
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}
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if(cfg->pub_mode != MSGMODE_NONE){
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fprintf(stderr, "Error: Only one type of message can be sent at once.\n\n");
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return 1;
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}else if(i==argc-1){
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fprintf(stderr, "Error: -f argument given but no file specified.\n\n");
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return 1;
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}else{
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cfg->pub_mode = MSGMODE_FILE;
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cfg->file_input = strdup(argv[i+1]);
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}
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i++;
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}else if(!strcmp(argv[i], "--help")){
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return 2;
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}else if(!strcmp(argv[i], "-h") || !strcmp(argv[i], "--host")){
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if(i==argc-1){
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fprintf(stderr, "Error: -h argument given but no host specified.\n\n");
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return 1;
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}else{
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cfg->host = strdup(argv[i+1]);
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}
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i++;
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#ifdef WITH_TLS
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}else if(!strcmp(argv[i], "--insecure")){
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cfg->insecure = true;
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#endif
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}else if(!strcmp(argv[i], "-i") || !strcmp(argv[i], "--id")){
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if(cfg->id_prefix){
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fprintf(stderr, "Error: -i and -I argument cannot be used together.\n\n");
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return 1;
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}
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if(i==argc-1){
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fprintf(stderr, "Error: -i argument given but no id specified.\n\n");
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return 1;
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}else{
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cfg->id = strdup(argv[i+1]);
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}
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i++;
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}else if(!strcmp(argv[i], "-I") || !strcmp(argv[i], "--id-prefix")){
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if(cfg->id){
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fprintf(stderr, "Error: -i and -I argument cannot be used together.\n\n");
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return 1;
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}
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if(i==argc-1){
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fprintf(stderr, "Error: -I argument given but no id prefix specified.\n\n");
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return 1;
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}else{
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cfg->id_prefix = strdup(argv[i+1]);
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}
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i++;
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}else if(!strcmp(argv[i], "-k") || !strcmp(argv[i], "--keepalive")){
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if(i==argc-1){
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fprintf(stderr, "Error: -k argument given but no keepalive specified.\n\n");
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return 1;
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}else{
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cfg->keepalive = atoi(argv[i+1]);
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if(cfg->keepalive>65535){
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fprintf(stderr, "Error: Invalid keepalive given: %d\n", cfg->keepalive);
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return 1;
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}
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}
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i++;
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#ifdef WITH_TLS
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}else if(!strcmp(argv[i], "--key")){
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if(i==argc-1){
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fprintf(stderr, "Error: --key argument given but no file specified.\n\n");
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return 1;
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}else{
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cfg->keyfile = strdup(argv[i+1]);
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}
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i++;
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#endif
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}else if(!strcmp(argv[i], "-l") || !strcmp(argv[i], "--stdin-line")){
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if(pub_or_sub == CLIENT_SUB){
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goto unknown_option;
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}
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if(cfg->pub_mode != MSGMODE_NONE){
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fprintf(stderr, "Error: Only one type of message can be sent at once.\n\n");
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return 1;
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}else{
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cfg->pub_mode = MSGMODE_STDIN_LINE;
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}
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}else if(!strcmp(argv[i], "-m") || !strcmp(argv[i], "--message")){
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if(pub_or_sub == CLIENT_SUB){
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goto unknown_option;
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}
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if(cfg->pub_mode != MSGMODE_NONE){
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fprintf(stderr, "Error: Only one type of message can be sent at once.\n\n");
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return 1;
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}else if(i==argc-1){
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fprintf(stderr, "Error: -m argument given but no message specified.\n\n");
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return 1;
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}else{
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cfg->message = strdup(argv[i+1]);
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cfg->msglen = strlen(cfg->message);
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cfg->pub_mode = MSGMODE_CMD;
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}
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i++;
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}else if(!strcmp(argv[i], "-M")){
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if(i==argc-1){
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fprintf(stderr, "Error: -M argument given but max_inflight not specified.\n\n");
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return 1;
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}else{
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cfg->max_inflight = atoi(argv[i+1]);
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}
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i++;
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}else if(!strcmp(argv[i], "-n") || !strcmp(argv[i], "--null-message")){
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if(pub_or_sub == CLIENT_SUB){
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goto unknown_option;
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}
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if(cfg->pub_mode != MSGMODE_NONE){
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fprintf(stderr, "Error: Only one type of message can be sent at once.\n\n");
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return 1;
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}else{
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cfg->pub_mode = MSGMODE_NULL;
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}
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#ifdef WITH_SOCKS
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}else if(!strcmp(argv[i], "--proxy")){
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if(i==argc-1){
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fprintf(stderr, "Error: --proxy argument given but no proxy url specified.\n\n");
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return 1;
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}else{
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if(mosquitto__parse_socks_url(cfg, argv[i+1])){
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return 1;
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}
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i++;
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}
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#endif
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#ifdef WITH_TLS_PSK
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}else if(!strcmp(argv[i], "--psk")){
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if(i==argc-1){
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fprintf(stderr, "Error: --psk argument given but no key specified.\n\n");
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return 1;
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}else{
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cfg->psk = strdup(argv[i+1]);
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}
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i++;
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}else if(!strcmp(argv[i], "--psk-identity")){
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if(i==argc-1){
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fprintf(stderr, "Error: --psk-identity argument given but no identity specified.\n\n");
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return 1;
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}else{
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cfg->psk_identity = strdup(argv[i+1]);
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}
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i++;
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#endif
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}else if(!strcmp(argv[i], "-q") || !strcmp(argv[i], "--qos")){
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if(i==argc-1){
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fprintf(stderr, "Error: -q argument given but no QoS specified.\n\n");
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return 1;
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}else{
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cfg->qos = atoi(argv[i+1]);
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if(cfg->qos<0 || cfg->qos>2){
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fprintf(stderr, "Error: Invalid QoS given: %d\n", cfg->qos);
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return 1;
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}
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}
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i++;
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}else if(!strcmp(argv[i], "--quiet")){
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cfg->quiet = true;
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}else if(!strcmp(argv[i], "-r") || !strcmp(argv[i], "--retain")){
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if(pub_or_sub == CLIENT_SUB){
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goto unknown_option;
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}
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cfg->retain = 1;
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}else if(!strcmp(argv[i], "-s") || !strcmp(argv[i], "--stdin-file")){
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if(pub_or_sub == CLIENT_SUB){
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goto unknown_option;
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}
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if(cfg->pub_mode != MSGMODE_NONE){
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fprintf(stderr, "Error: Only one type of message can be sent at once.\n\n");
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return 1;
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}else{
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cfg->pub_mode = MSGMODE_STDIN_FILE;
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}
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#ifdef WITH_SRV
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}else if(!strcmp(argv[i], "-S")){
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cfg->use_srv = true;
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#endif
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}else if(!strcmp(argv[i], "-t") || !strcmp(argv[i], "--topic")){
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if(i==argc-1){
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fprintf(stderr, "Error: -t argument given but no topic specified.\n\n");
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return 1;
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}else{
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if(pub_or_sub == CLIENT_PUB){
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if(mosquitto_pub_topic_check(argv[i+1]) == MOSQ_ERR_INVAL){
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fprintf(stderr, "Error: Invalid publish topic '%s', does it contain '+' or '#'?\n", argv[i+1]);
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return 1;
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}
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cfg->topic = strdup(argv[i+1]);
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}else{
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if(mosquitto_sub_topic_check(argv[i+1]) == MOSQ_ERR_INVAL){
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fprintf(stderr, "Error: Invalid subscription topic '%s', are all '+' and '#' wildcards correct?\n", argv[i+1]);
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return 1;
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}
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cfg->topic_count++;
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cfg->topics = realloc(cfg->topics, cfg->topic_count*sizeof(char *));
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cfg->topics[cfg->topic_count-1] = strdup(argv[i+1]);
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}
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i++;
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}
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}else if(!strcmp(argv[i], "-T") || !strcmp(argv[i], "--filter-out")){
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if(pub_or_sub == CLIENT_PUB){
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goto unknown_option;
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}
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if(i==argc-1){
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fprintf(stderr, "Error: -T argument given but no topic filter specified.\n\n");
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return 1;
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}else{
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if(mosquitto_sub_topic_check(argv[i+1]) == MOSQ_ERR_INVAL){
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fprintf(stderr, "Error: Invalid filter topic '%s', are all '+' and '#' wildcards correct?\n", argv[i+1]);
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return 1;
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}
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cfg->filter_out_count++;
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cfg->filter_outs = realloc(cfg->filter_outs, cfg->filter_out_count*sizeof(char *));
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cfg->filter_outs[cfg->filter_out_count-1] = strdup(argv[i+1]);
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}
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i++;
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#ifdef WITH_TLS
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}else if(!strcmp(argv[i], "--tls-version")){
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if(i==argc-1){
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fprintf(stderr, "Error: --tls-version argument given but no version specified.\n\n");
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return 1;
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}else{
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cfg->tls_version = strdup(argv[i+1]);
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}
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i++;
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#endif
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}else if(!strcmp(argv[i], "-u") || !strcmp(argv[i], "--username")){
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if(i==argc-1){
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fprintf(stderr, "Error: -u argument given but no username specified.\n\n");
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return 1;
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}else{
|
|
cfg->username = strdup(argv[i+1]);
|
|
}
|
|
i++;
|
|
}else if(!strcmp(argv[i], "-P") || !strcmp(argv[i], "--pw")){
|
|
if(i==argc-1){
|
|
fprintf(stderr, "Error: -P argument given but no password specified.\n\n");
|
|
return 1;
|
|
}else{
|
|
cfg->password = strdup(argv[i+1]);
|
|
}
|
|
i++;
|
|
}else if(!strcmp(argv[i], "--will-payload")){
|
|
if(i==argc-1){
|
|
fprintf(stderr, "Error: --will-payload argument given but no will payload specified.\n\n");
|
|
return 1;
|
|
}else{
|
|
cfg->will_payload = strdup(argv[i+1]);
|
|
cfg->will_payloadlen = strlen(cfg->will_payload);
|
|
}
|
|
i++;
|
|
}else if(!strcmp(argv[i], "--will-qos")){
|
|
if(i==argc-1){
|
|
fprintf(stderr, "Error: --will-qos argument given but no will QoS specified.\n\n");
|
|
return 1;
|
|
}else{
|
|
cfg->will_qos = atoi(argv[i+1]);
|
|
if(cfg->will_qos < 0 || cfg->will_qos > 2){
|
|
fprintf(stderr, "Error: Invalid will QoS %d.\n\n", cfg->will_qos);
|
|
return 1;
|
|
}
|
|
}
|
|
i++;
|
|
}else if(!strcmp(argv[i], "--will-retain")){
|
|
cfg->will_retain = true;
|
|
}else if(!strcmp(argv[i], "--will-topic")){
|
|
if(i==argc-1){
|
|
fprintf(stderr, "Error: --will-topic argument given but no will topic specified.\n\n");
|
|
return 1;
|
|
}else{
|
|
if(mosquitto_pub_topic_check(argv[i+1]) == MOSQ_ERR_INVAL){
|
|
fprintf(stderr, "Error: Invalid will topic '%s', does it contain '+' or '#'?\n", argv[i+1]);
|
|
return 1;
|
|
}
|
|
cfg->will_topic = strdup(argv[i+1]);
|
|
}
|
|
i++;
|
|
}else if(!strcmp(argv[i], "-c") || !strcmp(argv[i], "--disable-clean-session")){
|
|
if(pub_or_sub == CLIENT_PUB){
|
|
goto unknown_option;
|
|
}
|
|
cfg->clean_session = false;
|
|
}else if(!strcmp(argv[i], "-N")){
|
|
if(pub_or_sub == CLIENT_PUB){
|
|
goto unknown_option;
|
|
}
|
|
cfg->eol = false;
|
|
}else if(!strcmp(argv[i], "-R")){
|
|
if(pub_or_sub == CLIENT_PUB){
|
|
goto unknown_option;
|
|
}
|
|
cfg->no_retain = true;
|
|
}else if(!strcmp(argv[i], "-v") || !strcmp(argv[i], "--verbose")){
|
|
if(pub_or_sub == CLIENT_PUB){
|
|
goto unknown_option;
|
|
}
|
|
cfg->verbose = 1;
|
|
}else{
|
|
goto unknown_option;
|
|
}
|
|
}
|
|
|
|
return MOSQ_ERR_SUCCESS;
|
|
|
|
unknown_option:
|
|
fprintf(stderr, "Error: Unknown option '%s'.\n",argv[i]);
|
|
return 1;
|
|
}
|
|
|
|
int client_opts_set(struct mosquitto *mosq, struct mosq_config *cfg)
|
|
{
|
|
int rc;
|
|
|
|
if(cfg->will_topic && mosquitto_will_set(mosq, cfg->will_topic,
|
|
cfg->will_payloadlen, cfg->will_payload, cfg->will_qos,
|
|
cfg->will_retain)){
|
|
|
|
if(!cfg->quiet) fprintf(stderr, "Error: Problem setting will.\n");
|
|
mosquitto_lib_cleanup();
|
|
return 1;
|
|
}
|
|
if(cfg->username && mosquitto_username_pw_set(mosq, cfg->username, cfg->password)){
|
|
if(!cfg->quiet) fprintf(stderr, "Error: Problem setting username and password.\n");
|
|
mosquitto_lib_cleanup();
|
|
return 1;
|
|
}
|
|
#ifdef WITH_TLS
|
|
if((cfg->cafile || cfg->capath)
|
|
&& mosquitto_tls_set(mosq, cfg->cafile, cfg->capath, cfg->certfile, cfg->keyfile, NULL)){
|
|
|
|
if(!cfg->quiet) fprintf(stderr, "Error: Problem setting TLS options.\n");
|
|
mosquitto_lib_cleanup();
|
|
return 1;
|
|
}
|
|
if(cfg->insecure && mosquitto_tls_insecure_set(mosq, true)){
|
|
if(!cfg->quiet) fprintf(stderr, "Error: Problem setting TLS insecure option.\n");
|
|
mosquitto_lib_cleanup();
|
|
return 1;
|
|
}
|
|
# ifdef WITH_TLS_PSK
|
|
if(cfg->psk && mosquitto_tls_psk_set(mosq, cfg->psk, cfg->psk_identity, NULL)){
|
|
if(!cfg->quiet) fprintf(stderr, "Error: Problem setting TLS-PSK options.\n");
|
|
mosquitto_lib_cleanup();
|
|
return 1;
|
|
}
|
|
# endif
|
|
if(cfg->tls_version && mosquitto_tls_opts_set(mosq, 1, cfg->tls_version, cfg->ciphers)){
|
|
if(!cfg->quiet) fprintf(stderr, "Error: Problem setting TLS options.\n");
|
|
mosquitto_lib_cleanup();
|
|
return 1;
|
|
}
|
|
#endif
|
|
mosquitto_max_inflight_messages_set(mosq, cfg->max_inflight);
|
|
#ifdef WITH_SOCKS
|
|
if(cfg->socks5_host){
|
|
rc = mosquitto_socks5_set(mosq, cfg->socks5_host, cfg->socks5_port, cfg->socks5_username, cfg->socks5_password);
|
|
if(rc){
|
|
mosquitto_lib_cleanup();
|
|
return rc;
|
|
}
|
|
}
|
|
#endif
|
|
return MOSQ_ERR_SUCCESS;
|
|
}
|
|
|
|
int client_id_generate(struct mosq_config *cfg, const char *id_base)
|
|
{
|
|
int len;
|
|
char hostname[256];
|
|
|
|
if(cfg->id_prefix){
|
|
cfg->id = malloc(strlen(cfg->id_prefix)+10);
|
|
if(!cfg->id){
|
|
if(!cfg->quiet) fprintf(stderr, "Error: Out of memory.\n");
|
|
mosquitto_lib_cleanup();
|
|
return 1;
|
|
}
|
|
snprintf(cfg->id, strlen(cfg->id_prefix)+10, "%s%d", cfg->id_prefix, getpid());
|
|
}else if(!cfg->id){
|
|
hostname[0] = '\0';
|
|
gethostname(hostname, 256);
|
|
hostname[255] = '\0';
|
|
len = strlen(id_base) + strlen("/-") + 6 + strlen(hostname);
|
|
cfg->id = malloc(len);
|
|
if(!cfg->id){
|
|
if(!cfg->quiet) fprintf(stderr, "Error: Out of memory.\n");
|
|
mosquitto_lib_cleanup();
|
|
return 1;
|
|
}
|
|
snprintf(cfg->id, len, "%s/%d-%s", id_base, getpid(), hostname);
|
|
if(strlen(cfg->id) > MOSQ_MQTT_ID_MAX_LENGTH){
|
|
/* Enforce maximum client id length of 23 characters */
|
|
cfg->id[MOSQ_MQTT_ID_MAX_LENGTH] = '\0';
|
|
}
|
|
}
|
|
return MOSQ_ERR_SUCCESS;
|
|
}
|
|
|
|
int client_connect(struct mosquitto *mosq, struct mosq_config *cfg)
|
|
{
|
|
char err[1024];
|
|
int rc;
|
|
|
|
if(cfg->use_srv){
|
|
rc = mosquitto_connect_srv(mosq, cfg->host, cfg->keepalive, cfg->bind_address);
|
|
}else{
|
|
rc = mosquitto_connect_bind(mosq, cfg->host, cfg->port, cfg->keepalive, cfg->bind_address);
|
|
}
|
|
if(rc){
|
|
if(!cfg->quiet){
|
|
if(rc == MOSQ_ERR_ERRNO){
|
|
#ifndef WIN32
|
|
strerror_r(errno, err, 1024);
|
|
#else
|
|
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, errno, 0, (LPTSTR)&err, 1024, NULL);
|
|
#endif
|
|
fprintf(stderr, "Error: %s\n", err);
|
|
}else{
|
|
fprintf(stderr, "Unable to connect (%d).\n", rc);
|
|
}
|
|
}
|
|
mosquitto_lib_cleanup();
|
|
return rc;
|
|
}
|
|
return MOSQ_ERR_SUCCESS;
|
|
}
|
|
|
|
#ifdef WITH_SOCKS
|
|
/* Convert %25 -> %, %3a, %3A -> :, %40 -> @ */
|
|
static int mosquitto__urldecode(char *str)
|
|
{
|
|
int i, j;
|
|
int len;
|
|
if(!str) return 0;
|
|
|
|
if(!strchr(str, '%')) return 0;
|
|
|
|
len = strlen(str);
|
|
for(i=0; i<len; i++){
|
|
if(str[i] == '%'){
|
|
if(i+2 >= len){
|
|
return 1;
|
|
}
|
|
if(str[i+1] == '2' && str[i+2] == '5'){
|
|
str[i] = '%';
|
|
len -= 2;
|
|
for(j=i+1; j<len; j++){
|
|
str[j] = str[j+2];
|
|
}
|
|
str[j] = '\0';
|
|
}else if(str[i+1] == '3' && (str[i+2] == 'A' || str[i+2] == 'a')){
|
|
str[i] = ':';
|
|
len -= 2;
|
|
for(j=i+1; j<len; j++){
|
|
str[j] = str[j+2];
|
|
}
|
|
str[j] = '\0';
|
|
}else if(str[i+1] == '4' && str[i+2] == '0'){
|
|
str[i] = ':';
|
|
len -= 2;
|
|
for(j=i+1; j<len; j++){
|
|
str[j] = str[j+2];
|
|
}
|
|
str[j] = '\0';
|
|
}else{
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mosquitto__parse_socks_url(struct mosq_config *cfg, char *url)
|
|
{
|
|
char *str;
|
|
int i;
|
|
char *username = NULL, *password = NULL, *host = NULL, *port = NULL;
|
|
char *username_or_host = NULL;
|
|
int start;
|
|
int len;
|
|
bool have_auth = false;
|
|
int port_int;
|
|
|
|
if(!strncmp(url, "socks5h://", strlen("socks5h://"))){
|
|
str = url + strlen("socks5h://");
|
|
}else{
|
|
fprintf(stderr, "Error: Unsupported proxy protocol: %s\n", url);
|
|
return 1;
|
|
}
|
|
|
|
start = 0;
|
|
for(i=0; i<strlen(str); i++){
|
|
if(str[i] == ':'){
|
|
if(i == start){
|
|
goto cleanup;
|
|
}
|
|
if(have_auth){
|
|
len = i-start;
|
|
host = malloc(len + 1);
|
|
memcpy(host, &(str[start]), len);
|
|
host[len] = '\0';
|
|
start = i+1;
|
|
}else if(!username_or_host){
|
|
len = i-start;
|
|
username_or_host = malloc(len + 1);
|
|
memcpy(username_or_host, &(str[start]), len);
|
|
username_or_host[len] = '\0';
|
|
start = i+1;
|
|
}
|
|
}else if(str[i] == '@'){
|
|
if(i == start){
|
|
goto cleanup;
|
|
}
|
|
have_auth = true;
|
|
if(username_or_host){
|
|
username = username_or_host;
|
|
username_or_host = NULL;
|
|
|
|
len = i-start;
|
|
password = malloc(len + 1);
|
|
memcpy(password, &(str[start]), len);
|
|
password[len] = '\0';
|
|
start = i+1;
|
|
}else{
|
|
len = i-start;
|
|
username = malloc(len + 1);
|
|
memcpy(username, &(str[start]), len);
|
|
username[len] = '\0';
|
|
start = i+1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Deal with remainder */
|
|
if(i > start){
|
|
len = i-start;
|
|
if(host){
|
|
port = malloc(len + 1);
|
|
memcpy(port, &(str[start]), len);
|
|
port[len] = '\0';
|
|
}else if(username_or_host){
|
|
if(have_auth){
|
|
host = malloc(len + 1);
|
|
memcpy(host, &(str[start]), len);
|
|
host[len] = '\0';
|
|
}else{
|
|
host = username_or_host;
|
|
username_or_host = NULL;
|
|
port = malloc(len + 1);
|
|
memcpy(port, &(str[start]), len);
|
|
port[len] = '\0';
|
|
}
|
|
}else{
|
|
host = malloc(len + 1);
|
|
memcpy(host, &(str[start]), len);
|
|
host[len] = '\0';
|
|
}
|
|
}
|
|
|
|
if(!host){
|
|
fprintf(stderr, "Error: Invalid proxy.\n");
|
|
goto cleanup;
|
|
}
|
|
|
|
if(mosquitto__urldecode(username)){
|
|
goto cleanup;
|
|
}
|
|
if(mosquitto__urldecode(password)){
|
|
goto cleanup;
|
|
}
|
|
if(port){
|
|
port_int = atoi(port);
|
|
if(port_int < 1 || port_int > 65535){
|
|
fprintf(stderr, "Error: Invalid proxy port %d\n", port_int);
|
|
goto cleanup;
|
|
}
|
|
free(port);
|
|
}else{
|
|
port_int = 1080;
|
|
}
|
|
|
|
cfg->socks5_username = username;
|
|
cfg->socks5_password = password;
|
|
cfg->socks5_host = host;
|
|
cfg->socks5_port = port_int;
|
|
|
|
return 0;
|
|
cleanup:
|
|
if(username_or_host) free(username_or_host);
|
|
if(username) free(username);
|
|
if(password) free(password);
|
|
if(host) free(host);
|
|
if(port) free(port);
|
|
return 1;
|
|
}
|
|
|
|
#endif
|