From 9b654f367f4b87e949f9fca8df3dd05d25825efb Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@anytun.org>
Date: Wed, 31 Dec 2008 17:54:05 +0000
Subject: changed useless malloc for options_t

---
 src/options.c | 156 ++++++++++++++++++++++++++++------------------------------
 src/options.h |   4 +-
 src/uanytun.c |  25 +++++-----
 3 files changed, 88 insertions(+), 97 deletions(-)

diff --git a/src/options.c b/src/options.c
index c329ee8..1885f83 100644
--- a/src/options.c
+++ b/src/options.c
@@ -133,22 +133,17 @@ buffer_t options_parse_hex_string(const char* hex)
   return buffer;
 }
 
-
-int options_parse(options_t** opt, int argc, char* argv[])
+int options_parse(options_t* opt, int argc, char* argv[])
 {
   if(!opt)
     return -1;
 
-  *opt = malloc(sizeof(options_t));
-  if(!*opt)
-    return -2;
-
-  options_default(*opt);
+  options_default(opt);
 
-  if((*opt)->progname_)
-    free((*opt)->progname_);
-  (*opt)->progname_ = strdup(argv[0]);
-  if(!(*opt)->progname_)
+  if(opt->progname_)
+    free(opt->progname_);
+  opt->progname_ = strdup(argv[0]);
+  if(!opt->progname_)
     return -2;
 
   argc--;
@@ -161,43 +156,43 @@ int options_parse(options_t** opt, int argc, char* argv[])
 
     if(!strcmp(str,"-h") || !strcmp(str,"--help"))
       return -1;
-    PARSE_INVERSE_BOOL_PARAM("-D","--nodaemonize", (*opt)->daemonize_)
-    PARSE_BOOL_PARAM("-C","--chroot", (*opt)->chroot_)
-    PARSE_STRING_PARAM("-u","--username", (*opt)->username_)
-    PARSE_STRING_PARAM("-H","--chroot-dir", (*opt)->chroot_dir_)
-    PARSE_STRING_PARAM("-P","--write-pid", (*opt)->pid_file_)
-    PARSE_STRING_PARAM("-i","--interface", (*opt)->local_addr_)
-    PARSE_STRING_PARAM("-p","--port", (*opt)->local_port_)
-    PARSE_STRING_PARAM("-r","--remote-host", (*opt)->remote_addr_)
-    PARSE_STRING_PARAM("-o","--remote-port", (*opt)->remote_port_)
-    PARSE_STRING_PARAM("-d","--dev", (*opt)->dev_name_)
-    PARSE_STRING_PARAM("-t","--type", (*opt)->dev_type_)
-    PARSE_STRING_PARAM2("-n","--ifconfig", (*opt)->ifconfig_param_local_, (*opt)->ifconfig_param_remote_netmask_)
-    PARSE_STRING_PARAM("-x","--post-up-script", (*opt)->post_up_script_)
-    PARSE_INT_PARAM("-s","--sender-id", (*opt)->sender_id_)
-    PARSE_INT_PARAM("-m","--mux", (*opt)->mux_)
-    PARSE_INT_PARAM("-w","--window-size", (*opt)->seq_window_size_)
-    PARSE_STRING_PARAM("-c","--cipher", (*opt)->cipher_)
-    PARSE_STRING_PARAM("-k","--kd-prf", (*opt)->kd_prf_)
-    PARSE_STRING_PARAM("-a","--auth-algo", (*opt)->auth_algo_)
-    PARSE_HEXSTRING_PARAM_SEC("-K","--key", (*opt)->key_)
-    PARSE_HEXSTRING_PARAM_SEC("-A","--salt", (*opt)->salt_)
+    PARSE_INVERSE_BOOL_PARAM("-D","--nodaemonize", opt->daemonize_)
+    PARSE_BOOL_PARAM("-C","--chroot", opt->chroot_)
+    PARSE_STRING_PARAM("-u","--username", opt->username_)
+    PARSE_STRING_PARAM("-H","--chroot-dir", opt->chroot_dir_)
+    PARSE_STRING_PARAM("-P","--write-pid", opt->pid_file_)
+    PARSE_STRING_PARAM("-i","--interface", opt->local_addr_)
+    PARSE_STRING_PARAM("-p","--port", opt->local_port_)
+    PARSE_STRING_PARAM("-r","--remote-host", opt->remote_addr_)
+    PARSE_STRING_PARAM("-o","--remote-port", opt->remote_port_)
+    PARSE_STRING_PARAM("-d","--dev", opt->dev_name_)
+    PARSE_STRING_PARAM("-t","--type", opt->dev_type_)
+    PARSE_STRING_PARAM2("-n","--ifconfig", opt->ifconfig_param_local_, opt->ifconfig_param_remote_netmask_)
+    PARSE_STRING_PARAM("-x","--post-up-script", opt->post_up_script_)
+    PARSE_INT_PARAM("-s","--sender-id", opt->sender_id_)
+    PARSE_INT_PARAM("-m","--mux", opt->mux_)
+    PARSE_INT_PARAM("-w","--window-size", opt->seq_window_size_)
+    PARSE_STRING_PARAM("-c","--cipher", opt->cipher_)
+    PARSE_STRING_PARAM("-k","--kd-prf", opt->kd_prf_)
+    PARSE_STRING_PARAM("-a","--auth-algo", opt->auth_algo_)
+    PARSE_HEXSTRING_PARAM_SEC("-K","--key", opt->key_)
+    PARSE_HEXSTRING_PARAM_SEC("-A","--salt", opt->salt_)
     else 
       return i;
   }
 
-  if(!strcmp((*opt)->cipher_, "null") && !strcmp((*opt)->auth_algo_, "null")) {
-    if((*opt)->kd_prf_) free((*opt)->kd_prf_);
-    (*opt)->kd_prf_ = strdup("null");
+  if(!strcmp(opt->cipher_, "null") && !strcmp(opt->auth_algo_, "null")) {
+    if(opt->kd_prf_) free(opt->kd_prf_);
+    opt->kd_prf_ = strdup("null");
   }
-  if((strcmp((*opt)->cipher_, "null") || strcmp((*opt)->auth_algo_, "null")) && 
-     !strcmp((*opt)->kd_prf_, "null")) {
-    if((*opt)->kd_prf_) free((*opt)->kd_prf_);
-    (*opt)->kd_prf_ = strdup("aes-ctr");
+  if((strcmp(opt->cipher_, "null") || strcmp(opt->auth_algo_, "null")) && 
+     !strcmp(opt->kd_prf_, "null")) {
+    if(opt->kd_prf_) free(opt->kd_prf_);
+    opt->kd_prf_ = strdup("aes-ctr");
   }
 
-  if(!((*opt)->dev_name_) && !((*opt)->dev_type_))
-    (*opt)->dev_type_ = strdup("tun");
+  if(!(opt->dev_name_) && !(opt->dev_type_))
+    opt->dev_type_ = strdup("tun");
 
   return 0;
 }
@@ -234,50 +229,47 @@ void options_default(options_t* opt)
   opt->salt_.length_ = 0;
 }
 
-void options_clear(options_t** opt)
+void options_clear(options_t* opt)
 {
-  if(!opt || !(*opt))
+  if(!opt)
     return;
 
-  if((*opt)->progname_)
-    free((*opt)->progname_);
-  if((*opt)->username_)
-    free((*opt)->username_);
-  if((*opt)->chroot_dir_)
-    free((*opt)->chroot_dir_);
-  if((*opt)->pid_file_)
-    free((*opt)->pid_file_);
-  if((*opt)->local_addr_)
-    free((*opt)->local_addr_);
-  if((*opt)->local_port_)
-    free((*opt)->local_port_);
-  if((*opt)->remote_addr_)
-    free((*opt)->remote_addr_);
-  if((*opt)->remote_port_)
-    free((*opt)->remote_port_);
-  if((*opt)->dev_name_)
-    free((*opt)->dev_name_);
-  if((*opt)->dev_type_)
-    free((*opt)->dev_type_);
-  if((*opt)->ifconfig_param_local_)
-    free((*opt)->ifconfig_param_local_);
-  if((*opt)->ifconfig_param_remote_netmask_)
-    free((*opt)->ifconfig_param_remote_netmask_);
-  if((*opt)->post_up_script_)
-    free((*opt)->post_up_script_);
-  if((*opt)->cipher_)
-    free((*opt)->cipher_);
-  if((*opt)->kd_prf_)
-    free((*opt)->kd_prf_);
-  if((*opt)->auth_algo_)
-    free((*opt)->auth_algo_);
-  if((*opt)->key_.buf_)
-    free((*opt)->key_.buf_);
-  if((*opt)->salt_.buf_)
-    free((*opt)->salt_.buf_);
-
-  free(*opt);
-  *opt = NULL;
+  if(opt->progname_)
+    free(opt->progname_);
+  if(opt->username_)
+    free(opt->username_);
+  if(opt->chroot_dir_)
+    free(opt->chroot_dir_);
+  if(opt->pid_file_)
+    free(opt->pid_file_);
+  if(opt->local_addr_)
+    free(opt->local_addr_);
+  if(opt->local_port_)
+    free(opt->local_port_);
+  if(opt->remote_addr_)
+    free(opt->remote_addr_);
+  if(opt->remote_port_)
+    free(opt->remote_port_);
+  if(opt->dev_name_)
+    free(opt->dev_name_);
+  if(opt->dev_type_)
+    free(opt->dev_type_);
+  if(opt->ifconfig_param_local_)
+    free(opt->ifconfig_param_local_);
+  if(opt->ifconfig_param_remote_netmask_)
+    free(opt->ifconfig_param_remote_netmask_);
+  if(opt->post_up_script_)
+    free(opt->post_up_script_);
+  if(opt->cipher_)
+    free(opt->cipher_);
+  if(opt->kd_prf_)
+    free(opt->kd_prf_);
+  if(opt->auth_algo_)
+    free(opt->auth_algo_);
+  if(opt->key_.buf_)
+    free(opt->key_.buf_);
+  if(opt->salt_.buf_)
+    free(opt->salt_.buf_);
 }
 
 void options_print_usage()
diff --git a/src/options.h b/src/options.h
index 8702291..8fd413d 100644
--- a/src/options.h
+++ b/src/options.h
@@ -64,9 +64,9 @@ typedef struct options_struct options_t;
 
 buffer_t options_parse_hex_string(const char* hex);
 
-int options_parse(options_t** opt, int argc, char* argv[]);
+int options_parse(options_t* opt, int argc, char* argv[]);
 void options_default(options_t* opt);
-void options_clear(options_t** opt);
+void options_clear(options_t* opt);
 void options_print_usage();
 void options_print(options_t* opt);
 
diff --git a/src/uanytun.c b/src/uanytun.c
index df6a629..db42d5c 100644
--- a/src/uanytun.c
+++ b/src/uanytun.c
@@ -199,7 +199,7 @@ int main(int argc, char* argv[])
   log_init("uanytun", DAEMON);
   signal_init();
 
-  options_t* opt;
+  options_t opt;
   int ret = options_parse(&opt, argc, argv);
   if(ret) {
     options_clear(&opt);
@@ -217,7 +217,7 @@ int main(int argc, char* argv[])
   log_printf(NOTICE, "just started...");
 
   tun_device_t* dev;
-  tun_init(&dev, opt->dev_name_, opt->dev_type_, opt->ifconfig_param_local_, opt->ifconfig_param_remote_netmask_);
+  tun_init(&dev, opt.dev_name_, opt.dev_type_, opt.ifconfig_param_local_, opt.ifconfig_param_remote_netmask_);
   if(!dev) {
     log_printf(ERR, "error on tun_init, exitting");
     options_clear(&opt);
@@ -225,14 +225,14 @@ int main(int argc, char* argv[])
   }
   log_printf(NOTICE, "dev of type '%s' opened, actual name is '%s'", tun_get_type_string(dev), dev->actual_name_);
 
-  if(opt->post_up_script_) {
-    int ret = exec_script(opt->post_up_script_, dev->actual_name_);
+  if(opt.post_up_script_) {
+    int ret = exec_script(opt.post_up_script_, dev->actual_name_);
     log_printf(NOTICE, "post-up script returned %d", ret);
   }
 
 
   udp_socket_t* sock;
-  udp_init(&sock, opt->local_addr_, opt->local_port_);
+  udp_init(&sock, opt.local_addr_, opt.local_port_);
   if(!sock) {
     log_printf(ERR, "error on udp_init, exitting");
     options_clear(&opt);
@@ -243,8 +243,8 @@ int main(int argc, char* argv[])
   log_printf(NOTICE, "listening on: %s", local_string);
   free(local_string);
 
-  if(opt->remote_addr_) {
-    udp_set_remote(sock, opt->remote_addr_, opt->remote_port_);
+  if(opt.remote_addr_) {
+    udp_set_remote(sock, opt.remote_addr_, opt.remote_port_);
     char* remote_string = udp_get_remote_end_string(sock);
     log_printf(NOTICE, "set remote end to: %s", remote_string);
     free(remote_string);
@@ -252,16 +252,16 @@ int main(int argc, char* argv[])
 
 
   FILE* pid_file = NULL;
-  if(opt->pid_file_) {
-    pid_file = fopen(opt->pid_file_, "w");
+  if(opt.pid_file_) {
+    pid_file = fopen(opt.pid_file_, "w");
     if(!pid_file) {
       log_printf(WARNING, "unable to open pid file: %m");
     }
   }
 
-  if(opt->chroot_)
+  if(opt.chroot_)
     chrootAndDrop("/var/run/", "nobody");
-  if(opt->daemonize_) {
+  if(opt.daemonize_) {
     pid_t oldpid = getpid();
     daemonize();
     log_printf(INFO, "running in background now (old pid: %d)", oldpid);
@@ -273,7 +273,7 @@ int main(int argc, char* argv[])
     fclose(pid_file);
   }
 
-  ret = main_loop(dev, sock, opt);
+  ret = main_loop(dev, sock, &opt);
 
   tun_close(&dev);
   udp_close(&sock);
@@ -286,6 +286,5 @@ int main(int argc, char* argv[])
   else
     log_printf(NOTICE, "shutdown after signal");
 
-
   return ret;
 }
-- 
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