change INET_NTOA_BUF_LEN+1 to INET_NTOA_BUF_LEN

add a comment in a few places where we add weird numbers to buffer lengths


svn:r6161

src/or/circuitbuild.c

@@ -338,7 +338,7 @@ circuit_handle_first_hop(circuit_t *circ)
 {
   crypt_path_t *firsthop;
   connection_t *n_conn;
-  char tmpbuf[INET_NTOA_BUF_LEN+1];
+  char tmpbuf[INET_NTOA_BUF_LEN];
   struct in_addr in;
 
   firsthop = onion_next_hop_in_cpath(circ->cpath);

src/or/connection_edge.c

@@ -718,9 +718,9 @@ client_dns_set_addressmap(const char *address, uint32_t val,
                           int ttl)
 {
   struct in_addr in;
-  char extendedaddress[MAX_SOCKS_ADDR_LEN+MAX_HEX_NICKNAME_LEN+10];
+  char extendedaddress[MAX_SOCKS_ADDR_LEN+MAX_HEX_NICKNAME_LEN+10]; /* <address>.<hex or nickname>.exit\0  or just  <address>\0 */
   char valbuf[INET_NTOA_BUF_LEN];
-  char extendedval[INET_NTOA_BUF_LEN+MAX_HEX_NICKNAME_LEN+10];
+  char extendedval[INET_NTOA_BUF_LEN+MAX_HEX_NICKNAME_LEN+10]; /* 123.123.123.123.<hex or nickname>.exit\0   or just  123.123.123.123\0 */
 
   tor_assert(address); tor_assert(val);
 

src/or/dirserv.c

@@ -1310,7 +1310,7 @@ generate_v2_networkstatus(void)
   char *outp, *endp;
   or_options_t *options = get_options();
   char fingerprint[FINGERPRINT_LEN+1];
-  char ipaddr[INET_NTOA_BUF_LEN+1];
+  char ipaddr[INET_NTOA_BUF_LEN];
   char published[ISO_TIME_LEN+1];
   char digest[DIGEST_LEN];
   struct in_addr in;

src/or/rendcommon.c

@@ -314,7 +314,7 @@ rend_valid_service_id(const char *query)
 int
 rend_cache_lookup_entry(const char *query, int version, rend_cache_entry_t **e)
 {
-  char key[REND_SERVICE_ID_LEN+2];
+  char key[REND_SERVICE_ID_LEN+2]; /* 1<query>\0   or  0<query>\0 */
   tor_assert(rend_cache);
   if (!rend_valid_service_id(query))
     return -1;
@@ -366,7 +366,7 @@ rend_cache_store(const char *desc, size_t desc_len)
   rend_cache_entry_t *e;
   rend_service_descriptor_t *parsed;
   char query[REND_SERVICE_ID_LEN+1];
-  char key[REND_SERVICE_ID_LEN+2];
+  char key[REND_SERVICE_ID_LEN+2]; /* 1<query>\0   or  0<query>\0 */
   time_t now;
 
   tor_assert(rend_cache);

src/or/router.c

@@ -244,8 +244,7 @@ init_keys(void)
   char keydir[512];
   char keydir2[512];
   char fingerprint[FINGERPRINT_LEN+1];
-  /*nickname fp\n\0 */
-  char fingerprint_line[FINGERPRINT_LEN+MAX_NICKNAME_LEN+3];
+  char fingerprint_line[MAX_NICKNAME_LEN+FINGERPRINT_LEN+3]; /*nickname<space>fp\n\0 */
   char *cp;
   const char *mydesc, *datadir;
   crypto_pk_env_t *prkey;

src/or/routerlist.c

@@ -2252,7 +2252,7 @@ update_networkstatus_cache_downloads(time_t now)
     /* An authority launches a separate connection for everybody. */
     SMARTLIST_FOREACH(trusted_dir_servers, trusted_dir_server_t *, ds,
        {
-         char resource[HEX_DIGEST_LEN+6];
+         char resource[HEX_DIGEST_LEN+6]; /* fp/hexdigit.z\0 */
          if (router_digest_is_me(ds->digest))
            continue;
          if (connection_get_by_type_addr_port_purpose(