add quiet mode to proxychains launcher

this will be passed on to the DLL via a env variable
- additionally, now everything prints to stderr
- fixes a bug which would print DLL init even in quiet mode
- fixed a couple of bugs in argv parsing

src/common.h

@@ -1,3 +1,4 @@
 #define PROXYCHAINS_CONF_FILE_ENV_VAR "PROXYCHAINS_CONF_FILE"
+#define PROXYCHAINS_QUIET_MODE_ENV_VAR "PROXYCHAINS_QUIET_MODE"
 #define PROXYCHAINS_CONF_FILE "proxychains.conf"
 #define LOG_PREFIX "[proxychains] "

src/libproxychains.c

@@ -65,9 +65,11 @@ static void init_lib(void)
 #ifdef THREAD_SAFE
 	pthread_mutex_init(&internal_ips_lock, NULL);
 #endif
+	/* read the config file */
+	get_chain_data(proxychains_pd, &proxychains_proxy_count, &proxychains_ct);
+	
 	proxychains_write_log(LOG_PREFIX "DLL init\n");
 	
-	get_chain_data(proxychains_pd, &proxychains_proxy_count, &proxychains_ct);
 	true_connect = (connect_t) dlsym(RTLD_NEXT, "connect");
 
 	if (!true_connect) {
@@ -180,8 +182,6 @@ static inline void get_chain_data(
 	tcp_connect_time_out = 10*1000;
 	*ct = DYNAMIC_TYPE;
 
-	env = NULL;
-
 	/*
 	 * Get path to configuration file from env this file has priority
 	 * if it's defined.
@@ -190,7 +190,7 @@ static inline void get_chain_data(
 
 	snprintf(buff,256,"%s/.proxychains/proxychains.conf",getenv("HOME"));
 
-	if(!(file=fopen(env,"r")))
+	if(!env || (!(file=fopen(env,"r"))))
 	if(!(file=fopen("./proxychains.conf","r")))
 	if(!(file=fopen(buff,"r")))
 	if(!(file=fopen("/etc/proxychains.conf","r")))
@@ -199,6 +199,9 @@ static inline void get_chain_data(
 		exit(1);
 	}
 	
+	env = getenv(PROXYCHAINS_QUIET_MODE_ENV_VAR);
+	if(env && *env == '1') proxychains_quiet_mode = 1;
+
 	while(fgets(buff,sizeof(buff),file)) {
 		if(buff[0] != '\n' && buff[strspn(buff," ")]!='#') {
 			if(list) {

src/main.c

@@ -31,10 +31,13 @@ extern int optind, opterr, optopt;
 
 #include "common.h"
 
-static void usage(char** argv) {
-	printf("\nUsage:	 %s [h] [f] config_file program_name [arguments]\n"
-		"\t for example : proxychains telnet somehost.com\n"
-		"More help in README file\n", argv[0]);
+static int usage(char** argv) {
+	printf( "\nUsage:\t%s -q -f config_file program_name [arguments]\n"
+		"\t-q makes proxychains quiet - this overrides the config setting\n"
+		"\t-t allows to manually specify a configfile to use\n"
+		"\tfor example : proxychains telnet somehost.com\n"
+		"More help in README file\n\n", argv[0]);
+	return EXIT_FAILURE;
 }
 
 int check_path(char* path) {
@@ -73,26 +76,31 @@ int main(int argc, char *argv[]) {
 	char pbuf[256];
 	int opt;
 	int start_argv = 1;
+	int quiet = 0;
 	
-	while ((opt = getopt(argc, argv, "hf:")) != -1) {
+	if(argc == 1) return usage(argv);
+
+	while ((opt = getopt(argc, argv, "qf:")) != -1) {
 		switch (opt) {
-			case 'h':
-				usage(argv);
-				return EXIT_SUCCESS;
+			case 'q':
+				quiet = 1;
+				start_argv++;
+				break;
 			case 'f':
 				path = (char *)optarg;
 				if(!path) {
-					printf("error: no path supplied.\n");
-					return(EXIT_FAILURE);
+					fprintf(stderr, "error: no path supplied.\n");
+					return EXIT_FAILURE;
 				}
-				start_argv = 3;
+				start_argv += 2;
 				break;
 			default: /* '?' */
-				usage(argv);
-				exit(EXIT_FAILURE);
+				return usage(argv);
 			}
 	}
 	
+	if(start_argv >= argc) return usage(argv);
+
 	/* check if path of config file has not been passed via command line */
 	if(!path) {
 		// priority 1: env var PROXYCHAINS_CONF_FILE
@@ -120,11 +128,13 @@ int main(int argc, char *argv[]) {
 	
 	have:
 
-	printf(LOG_PREFIX "config file found: %s\n", path);
+	if(!quiet) fprintf(stderr, LOG_PREFIX "config file found: %s\n", path);
 
 	/* Set PROXYCHAINS_CONF_FILE to get proxychains lib to use new config file. */
 	setenv(PROXYCHAINS_CONF_FILE_ENV_VAR, path, 1);
 	
+	if(quiet) setenv(PROXYCHAINS_QUIET_MODE_ENV_VAR, "1", 1);
+
 
 	// search DLL
 	size_t i = 0;
@@ -142,10 +152,10 @@ int main(int argc, char *argv[]) {
 	}
 
 	if(!prefix) {
-		printf("couldnt locate %s\n", dll_name);
+		fprintf(stderr, "couldnt locate %s\n", dll_name);
 		return EXIT_FAILURE;
 	}
-	printf(LOG_PREFIX "preloading %s/%s\n", prefix, dll_name);
+	if(!quiet) fprintf(stderr, LOG_PREFIX "preloading %s/%s\n", prefix, dll_name);
 	
 	snprintf(buf, sizeof(buf), "LD_PRELOAD=%s/%s", prefix, dll_name);