[or-cvs] start honoring the recommended_versions string

Roger Dingledine arma at seul.org
Sat Aug 23 10:09:28 UTC 2003


Update of /home/or/cvsroot/src/or
In directory moria.mit.edu:/home2/arma/work/onion/cvs/src/or

Modified Files:
	config.c cpuworker.c main.c or.h routers.c test.c 
Log Message:
start honoring the recommended_versions string

your client exits if you're running a version not in the
directory's list of acceptable versions (unless you have a
config variable set to override).


Index: config.c
===================================================================
RCS file: /home/or/cvsroot/src/or/config.c,v
retrieving revision 1.38
retrieving revision 1.39
diff -u -d -r1.38 -r1.39
--- config.c	14 Aug 2003 03:52:50 -0000	1.38
+++ config.c	23 Aug 2003 10:09:25 -0000	1.39
@@ -185,6 +185,7 @@
     config_compare(list, "Daemon",          CONFIG_TYPE_BOOL, &options->Daemon) ||
     config_compare(list, "TrafficShaping",  CONFIG_TYPE_BOOL, &options->TrafficShaping) ||
     config_compare(list, "LinkPadding",     CONFIG_TYPE_BOOL, &options->LinkPadding) ||
+    config_compare(list, "IgnoreVersion",   CONFIG_TYPE_BOOL, &options->IgnoreVersion) ||
 
     /* float options */
     config_compare(list, "CoinWeight",     CONFIG_TYPE_DOUBLE, &options->CoinWeight)
@@ -260,6 +261,7 @@
   config_free_lines(cl);
 
 /* print config */
+/* XXX this section is rotting. Should maybe remove it sometime. */
   if (options->loglevel == LOG_DEBUG) {
     printf("LogLevel=%s\n",
            options->LogLevel);

Index: cpuworker.c
===================================================================
RCS file: /home/or/cvsroot/src/or/cpuworker.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- cpuworker.c	20 Aug 2003 23:05:22 -0000	1.1
+++ cpuworker.c	23 Aug 2003 10:09:25 -0000	1.2
@@ -39,7 +39,6 @@
   if(conn->inbuf_reached_eof) {
     log_fn(LOG_ERR,"Read eof. Worker dying.");
     if(conn->state != CPUWORKER_STATE_IDLE) {
-      onion_pending_remove(conn->circ);
       circuit_close(conn->circ);
       conn->circ = NULL;
       num_cpuworkers_busy--;
@@ -59,11 +58,9 @@
     if(*buf == 0 || conn->circ->p_conn == NULL ||
        onionskin_process(conn->circ, buf+1, buf+1+DH_KEY_LEN) < 0) {
       log_fn(LOG_DEBUG,"decoding onion, onionskin_process, or p_conn failed. Closing.");
-//      onion_pending_remove(conn->circ);
       circuit_close(conn->circ);
     } else {
       log_fn(LOG_DEBUG,"onionskin_process succeeded. Yay.");
-//      onion_pending_remove(conn->circ);
     }
     conn->circ = NULL;
   } else {

Index: main.c
===================================================================
RCS file: /home/or/cvsroot/src/or/main.c,v
retrieving revision 1.84
retrieving revision 1.85
diff -u -d -r1.84 -r1.85
--- main.c	20 Aug 2003 23:05:22 -0000	1.84
+++ main.c	23 Aug 2003 10:09:25 -0000	1.85
@@ -765,7 +765,9 @@
   eos = s+maxlen;
   strncpy(s, 
           "signed-directory\n"
-          "recommended-software 0.0.2pre4,0.0.2pre5,0.0.2pre6\n" /* XXX make this real */
+          "recommended-software "
+          RECOMMENDED_SOFTWARE_VERSIONS
+          "\n"
           , maxlen);
   
   i = strlen(s);

Index: or.h
===================================================================
RCS file: /home/or/cvsroot/src/or/or.h,v
retrieving revision 1.108
retrieving revision 1.109
diff -u -d -r1.108 -r1.109
--- or.h	20 Aug 2003 23:05:22 -0000	1.108
+++ or.h	23 Aug 2003 10:09:25 -0000	1.109
@@ -93,6 +93,8 @@
 #include "../common/log.h"
 #include "../common/util.h"
 
+#define RECOMMENDED_SOFTWARE_VERSIONS "0.0.2pre6,0.0.2pre7"
+
 #define MAXCONNECTIONS 1000 /* upper bound on max connections.
                               can be lowered by config file */
 
@@ -459,6 +461,7 @@
    int OnionRouter;
    int TrafficShaping;
    int LinkPadding;
+   int IgnoreVersion;
    int DirRebuildPeriod;
    int DirFetchPeriod;
    int KeepalivePeriod;

Index: routers.c
===================================================================
RCS file: /home/or/cvsroot/src/or/routers.c,v
retrieving revision 1.40
retrieving revision 1.41
diff -u -d -r1.40 -r1.41
--- routers.c	14 Aug 2003 03:52:51 -0000	1.40
+++ routers.c	23 Aug 2003 10:09:25 -0000	1.41
@@ -168,6 +168,7 @@
   for (i = 0; i < directory->n_routers; ++i)
     routerinfo_free(directory->routers[i]);
   free(directory->routers);
+  /* XXX are we leaking directory->software_versions here? */
   free(directory);
 }
 
@@ -506,6 +507,25 @@
   return 0;
 }
 
+/* return 0 if myversion is in start. Else return -1. */
+int compare_recommended_versions(char *myversion, char *start) {
+  int len_myversion = strlen(myversion);
+  char *comma;
+  char *end = start + strlen(start);
+
+  log_fn(LOG_DEBUG,"checking '%s' in '%s'.", myversion, start);
+  
+  for(;;) {
+    comma = strchr(start, ',');
+    if( ((comma ? comma : end) - start == len_myversion) &&
+       !strncmp(start, myversion, len_myversion)) /* only do strncmp if the length matches */
+        return 0; /* success, it's there */
+    if(!comma)
+      return -1; /* nope */
+    start = comma+1;
+  }
+}
+
 int router_get_dir_from_string(char *s, crypto_pk_env_t *pkey)
 {
   if (router_get_dir_from_string_impl(s, &directory, pkey)) {
@@ -516,7 +536,17 @@
     log(LOG_ERR, "Error resolving directory");
     return -1;
   }
-  /* XXXX Check version number */
+  if (compare_recommended_versions(VERSION, directory->software_versions) < 0) {
+    log(LOG_ERR, "You are running tor version %s, which is no longer supported.\nPlease upgrade to one of %s.", VERSION, RECOMMENDED_SOFTWARE_VERSIONS);
+    if(options.IgnoreVersion) {
+      log(LOG_WARNING, "IgnoreVersion is set. If it breaks, we told you so.");
+    } else {
+      log(LOG_ERR,"Set IgnoreVersion config variable if you want to survive this error.");
+      fflush(0);
+      exit(0);
+    }
+  }
+
   return 0;
 }
 

Index: test.c
===================================================================
RCS file: /home/or/cvsroot/src/or/test.c,v
retrieving revision 1.33
retrieving revision 1.34
diff -u -d -r1.33 -r1.34
--- test.c	14 Aug 2003 17:13:52 -0000	1.33
+++ test.c	23 Aug 2003 10:09:25 -0000	1.34
@@ -485,6 +485,9 @@
 int dump_router_to_string(char *s, int maxlen, routerinfo_t *router);
 void dump_directory_to_string(char *s, int maxlen);
 
+/* from routers.c */
+int compare_recommended_versions(char *myversion, char *start);
+
 void
 test_dir_format()
 {
@@ -608,6 +611,17 @@
   if (rp2) routerinfo_free(rp2);
   if (dir1) free(dir1); /* And more !*/
   if (dir1) free(dir2); /* And more !*/
+
+  /* make sure compare_recommended_versions() works */
+  test_eq(0, compare_recommended_versions("abc", "abc"));
+  test_eq(0, compare_recommended_versions("abc", "ab,abd,abde,abc,abcde"));
+  test_eq(0, compare_recommended_versions("abc", "ab,abd,abde,abcde,abc"));
+  test_eq(0, compare_recommended_versions("abc", "abc,abd,abde,abc,abcde"));
+  test_eq(0, compare_recommended_versions("a", "a,ab,abd,abde,abc,abcde"));
+  test_eq(-1, compare_recommended_versions("a", "ab,abd,abde,abc,abcde"));
+  test_eq(-1, compare_recommended_versions("abb", "ab,abd,abde,abc,abcde"));
+  test_eq(-1, compare_recommended_versions("a", ""));
+  test_eq(0, compare_recommended_versions(VERSION, RECOMMENDED_SOFTWARE_VERSIONS));
 }
 
 int 



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