if the default torrc isn't there, just use some default defaults

plus provide an internal dirservers file if they don't have one

having no config files will make it easier to run on windows


svn:r1124

4 files changed, 127 insertions, 17 deletions

diff --git a/src/or/config.c b/src/or/config.c
index 713a58508..e3ee6a5e2 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -210,6 +210,112 @@ static void config_assign(or_options_t *options, struct config_line *list) {
   }
 }
 
+/* XXX are there any other specifiers we want to give so making
+ * a several-thousand-byte string is less painful? */
+const char default_dirservers_string[] =
+"router moria1 moria.mit.edu 9001 9021 9031 800000\n"
+"platform Tor 0.0.2pre8 on Linux moria.mit.edu 2.4.18-27.7.xbigmem #1 SMP Fri Mar 14 05:08:50 EST 2003 i686\n"
+"published 2003-09-30 23:14:08\n"
+"onion-key\n"
+"-----BEGIN RSA PUBLIC KEY-----\n"
+"MIGJAoGBANoIvHieyHUTzIacbnWOnyTyzGrLOdXqbcjz2GGMxyHEd5K1bO1ZBNHP\n"
+"9i5qLQpN5viFk2K2rEGuG8tFgDEzSWZEtBqv3NVfUdiumdERWMBwlaQ0MVK4C+jf\n"
+"y5gZ8KI3o9ZictgPS1AQF+Kk932/vIHTuRIUKb4ILTnQilNvID0NAgMBAAE=\n"
+"-----END RSA PUBLIC KEY-----\n"
+"link-key\n"
+"-----BEGIN RSA PUBLIC KEY-----\n"
+"MIGJAoGBAPt97bGDd9siVjPd7Xuq2s+amMEOLIj9961aSdP6/OT+BS1Q4TX2dNOX\n"
+"ZNAl63Z2fQISsR81+nfoqRLYCKxhajsD7LRvRTaRwUrWemVqFevmZ4nJrHw6FoU3\n"
+"xNUIHRMA8X2DZ+l5qgnWZb7JU50ohhX5OpMSyysXnik51J8hD5mBAgMBAAE=\n"
+"-----END RSA PUBLIC KEY-----\n"
+"signing-key\n"
+"-----BEGIN RSA PUBLIC KEY-----\n"
+"MIGJAoGBAMHa0ZC/jo2Q2DrwKYF/6ZbmZ27PFYG91u4gUzzmZ/VXLpZ8wNzEV3oW\n"
+"nt+I61048fBiC1frT1/DZ351n2bLSk9zJbB6jyGZJn0380FPRX3+cXyXS0Gq8Ril\n"
+"xkhMQf5XuNFUb8UmYPSOH4WErjvYjKvU+gfjbK/82Jo9SuHpYz+BAgMBAAE=\n"
+"-----END RSA PUBLIC KEY-----\n"
+"router-signature\n"
+"-----BEGIN SIGNATURE-----\n"
+"Td3zb5d6uxO8oYGlmEHGzIdLuVm9s1Afqtm29JvRnnviQ36j6FZPlzPUaMVOUayn\n"
+"Wtz/CbaMj7mHSufpQ68wCLb1lQrtQkn7MkAWcQPIvZjpYh3UrcWrpfm7f/D+nKeN\n"
+"Z7UovF36xhCacjATNHhQNHHZHH6yONwN+Rf/N4kyPHw=\n"
+"-----END SIGNATURE-----\n"
+"\n"
+"router moria2 moria.mit.edu 9002 9022 9032 800000\n"
+"platform Tor 0.0.2pre8 on Linux moria.mit.edu 2.4.18-27.7.xbigmem #1 SMP Fri Mar 14 05:08:50 EST 2003 i686\n"
+"published 2003-09-30 23:14:05\n"
+"onion-key\n"
+"-----BEGIN RSA PUBLIC KEY-----\n"
+"MIGJAoGBAM4Cc/npgYC54XrYLC+grVxJp7PDmNO2DRRJOxKttBBtvLpnR1UaueTi\n"
+"kyknT5kmlx+ihgZF/jmye//2dDUp2+kK/kSkpRV4xnDLXZmed+sNSQxqmm9TtZQ9\n"
+"/hjpxhp5J9HmUTYhntBs+4E4CUKokmrI6oRLoln4SA39AX9QLPcnAgMBAAE=\n"
+"-----END RSA PUBLIC KEY-----\n"
+"link-key\n"
+"-----BEGIN RSA PUBLIC KEY-----\n"
+"MIGJAoGBAN7JVeCIJ7+0ZJew5ScOU58rTUqjGt1Z1Rkursc7WabEb8jno45VZwIs\n"
+"dkjnl31i36KHyyS7kQdHgkvG5EiyZiRipFAcoTaYv3Gvf1No9cXL6IhT3y/37dJ/\n"
+"kFPEMb/G2wdkJCC+D8fMwHBwMuqAg0JGuhoBOz0ArCgK3fq0BLilAgMBAAE=\n"
+"-----END RSA PUBLIC KEY-----\n"
+"signing-key\n"
+"-----BEGIN RSA PUBLIC KEY-----\n"
+"MIGJAoGBAOcrht/y5rkaahfX7sMe2qnpqoPibsjTSJaDvsUtaNP/Bq0MgNDGOR48\n"
+"rtwfqTRff275Edkp/UYw3G3vSgKCJr76/bqOHCmkiZrnPV1zxNfrK18gNw2Cxre0\n"
+"nTA+fD8JQqpPtb8b0SnG9kwy75eS//sRu7TErie2PzGMxrf9LH0LAgMBAAE=\n"
+"-----END RSA PUBLIC KEY-----\n"
+"router-signature\n"
+"-----BEGIN SIGNATURE-----\n"
+"X10a9Oc0LKNYKLDVzjRTIVT3NnE0y+xncllDDHSJSXR97fz3MBHGDqhy0Vgha/fe\n"
+"H/Y2E59oG01lYQ73j3JN+ibsCMtkzJDx2agCpV0LmakAD9ekHrYDWm/S41Ru6kf+\n"
+"PsyHpXlh7cZuGEX4U1pblSDFrQZ9L1vTkpfW+COzEvI=\n"
+"-----END SIGNATURE-----\n"
+"\n"
+"router moria3 moria.mit.edu 9003 9023 9033 800000\n"
+"platform Tor 0.0.2pre8 on Linux moria.mit.edu 2.4.18-27.7.xbigmem #1 SMP Fri Mar 14 05:08:50 EST 2003 i686\n"
+"published 2003-09-30 23:14:07\n"
+"onion-key\n"
+"-----BEGIN RSA PUBLIC KEY-----\n"
+"MIGJAoGBANS6J/Er9fYo03fjUUVesc7We9Z6xIevyDJH39pYS4NUlcr5ExYgSVFJ\n"
+"95aLCNx1x8Rf5YtiBKYuT3plBO/+rfuX+0iAGNkz/y3SlJVGz6aeptU3wN8CkvCL\n"
+"zATEcnl4QSPhHX0wFB9A3t7wZ+Bat1PTI029lax/BkoS9JG5onHPAgMBAAE=\n"
+"-----END RSA PUBLIC KEY-----\n"
+"link-key\n"
+"-----BEGIN RSA PUBLIC KEY-----\n"
+"MIGJAoGBAKUMY8p+7LBu7dEJnOR9HqbfcD6c4/f9GqJt3o29uu4XJPD8z2XGVBik\n"
+"pZBLijhYS6U7GFg0NLR4zBlsLyB8TxHeaz5KJidJjy+BfC01jz1xwVTYDlmGVpc1\n"
+"0mw0Ag0ND6aOQKKhelxhTI3Bf0R9olEXuSUKEWx3EMIz2qhLd9oDAgMBAAE=\n"
+"-----END RSA PUBLIC KEY-----\n"
+"signing-key\n"
+"-----BEGIN RSA PUBLIC KEY-----\n"
+"MIGJAoGBAMqgq83cwzSid2LSvzsn2rvkD8U0tWvqF6PuQAsKP3QHFqtBO+66pnIm\n"
+"CbiY2e6o01tmR47t557LuUCodEc8Blggxjg3ZEzvP42hsGB9LwQbcrU7grPRk0G0\n"
+"IltsOF9TZ+66gCeU7LxExLdAMqT2Tx6VT4IREPJMeNxSiceEjbABAgMBAAE=\n"
+"-----END RSA PUBLIC KEY-----\n"
+"router-signature\n"
+"-----BEGIN SIGNATURE-----\n"
+"GWpK2Ux/UwDaNUHwq+Xn7denyYFGS8SIWwqiMgHyUzc5wj1t2gWubJ/rMyGL59U3\n"
+"o6L/9qV34aa5UyNNBHXwYkxy7ixgPURaRYpAbkQKPU3ew8BgNXG/MNLYllIUkrbb\n"
+"h6G5u8RGbto+Nby/OjIh9TqdgK/B1sOdwAHI/IXiDoY=\n"
+"-----END SIGNATURE-----\n"
+;
+
+/* Call this function when they're using the default torrc but
+ * we can't find it. For now, just hard-code what comes in the
+ * default torrc.
+ */
+static int config_assign_default(or_options_t *options) {
+
+  /* set them up as a client only */
+  options->SocksPort = 9050;
+
+  /* plus give them a dirservers file */
+  if(router_set_routerlist_from_string(default_dirservers_string) < 0) {
+    log_fn(LOG_WARN,"Bug: the default dirservers internal string is corrupt.");
+    return -1;
+  }
+
+  return 0;
+}
+
 /* prints the usage of tor. */
 void print_usage(void) {
   printf("tor -f <torrc> [args]\n"
@@ -289,6 +395,7 @@ int getconfig(int argc, char **argv, or_options_t *options) {
   static int backup_argc;
   char *previous_pidfile = NULL;
   int previous_runasdaemon = 0;
+  int using_default_torrc;
 
   if(first_load) { /* first time we're called. save commandline args */
     backup_argv = argv;
@@ -318,23 +425,31 @@ int getconfig(int argc, char **argv, or_options_t *options) {
   }
   if(i < argc-1) { /* we found one */
     fname = argv[i+1];
+    using_default_torrc = 0;
   } else { /* didn't find one, try CONFDIR */
     fname = CONFDIR "/torrc";
+    using_default_torrc = 1;
   }
   log(LOG_DEBUG,"Opening config file '%s'",fname);
 
   cf = config_open(fname);
   if(!cf) {
-    log(LOG_WARN, "Unable to open configuration file '%s'.",fname);
-    return -1;
+    if(using_default_torrc == 1) {
+      log(LOG_WARN, "Configuration file '%s' not found. Using defaults.",fname);
+      if(config_assign_default(options) < 0)
+        return -1;
+    } else {
+      log(LOG_WARN, "Unable to open configuration file '%s'.",fname);
+      return -1;
+    }
+  } else { /* it opened successfully. use it. */
+    cl = config_get_lines(cf);
+    if(!cl) return -1;
+    config_assign(options,cl);
+    config_free_lines(cl);
+    config_close(cf);
   }
 
-  cl = config_get_lines(cf);
-  if(!cl) return -1;
-  config_assign(options,cl);
-  config_free_lines(cl);
-  config_close(cf);
-
 /* go through command-line variables too */
   cl = config_get_commandlines(argc,argv);
   config_assign(options,cl);
@@ -370,11 +485,6 @@ int getconfig(int argc, char **argv, or_options_t *options) {
     }
   }
 
-  if(options->RouterFile == NULL) {
-    log(LOG_WARN,"RouterFile option required, but not found.");
-    result = -1;
-  }
-
   if(options->ORPort < 0) {
     log(LOG_WARN,"ORPort option can't be negative.");
     result = -1;
diff --git a/src/or/main.c b/src/or/main.c
index 511df7763..e67d3c897 100644
--- a/src/or/main.c
+++ b/src/or/main.c
@@ -452,7 +452,8 @@ static int do_main_loop(void) {
   int poll_result;
 
   /* load the routers file */
-  if(router_set_routerlist_from_file(options.RouterFile) < 0) {
+  if(options.RouterFile &&
+     router_set_routerlist_from_file(options.RouterFile) < 0) {
     log_fn(LOG_ERR,"Error loading router list.");
     return -1;
   }
diff --git a/src/or/or.h b/src/or/or.h
index 5ebe9ffb4..998fb7fc9 100644
--- a/src/or/or.h
+++ b/src/or/or.h
@@ -810,6 +810,7 @@ void router_get_routerlist(routerlist_t **prouterlist);
 void routerinfo_free(routerinfo_t *router);
 void router_mark_as_down(char *nickname);
 int router_set_routerlist_from_file(char *routerfile);
+int router_set_routerlist_from_string(const char *s);
 int router_get_dir_hash(const char *s, char *digest);
 int router_get_router_hash(const char *s, char *digest);
 int router_set_routerlist_from_directory(const char *s, crypto_pk_env_t *pkey);
diff --git a/src/or/routerlist.c b/src/or/routerlist.c
index bb067f985..75674849c 100644
--- a/src/or/routerlist.c
+++ b/src/or/routerlist.c
@@ -66,8 +66,6 @@ typedef struct directory_token_t {
 
 /* static function prototypes */
 static int
-router_set_routerlist_from_string(const char *s);
-static int
 router_get_list_from_string_impl(const char **s, routerlist_t **dest,
                                  int n_good_nicknames,
                                  const char **good_nickname_lst);
@@ -265,7 +263,7 @@ int router_set_routerlist_from_file(char *routerfile)
 /* Helper function: read routerinfo elements from s, and throw out the
  * ones that don't parse and resolve.  Replace the current
  * routerlist. */
-static int router_set_routerlist_from_string(const char *s)
+int router_set_routerlist_from_string(const char *s)
 {
   if (router_get_list_from_string_impl(&s, &routerlist, -1, NULL)) {
     log(LOG_WARN, "Error parsing router file");