prop250: Change reveal_num to uint64_t and version to uint32_t

Signed-off-by: David Goulet <dgoulet@torproject.org>

src/or/shared_random.c

@@ -403,10 +403,10 @@ get_srv_element_from_commit(const sr_commit_t *commit)
 
 /* Return a srv object that is built with the construction:
  *    SRV = SHA3-256("shared-random" | INT_8(reveal_num) |
- *                   INT_8(version) | HASHED_REVEALS | previous_SRV)
+ *                   INT_4(version) | HASHED_REVEALS | previous_SRV)
  * This function cannot fail. */
 static sr_srv_t *
-generate_srv(const char *hashed_reveals, uint8_t reveal_num,
+generate_srv(const char *hashed_reveals, uint64_t reveal_num,
              const sr_srv_t *previous_srv)
 {
   char msg[DIGEST256_LEN + SR_SRV_MSG_LEN] = {0};
@@ -418,10 +418,10 @@ generate_srv(const char *hashed_reveals, uint8_t reveal_num,
   /* Add the invariant token. */
   memcpy(msg, SR_SRV_TOKEN, SR_SRV_TOKEN_LEN);
   offset += SR_SRV_TOKEN_LEN;
-  set_uint8(msg + offset, reveal_num);
+  set_uint64(msg + offset, tor_htonll(reveal_num));
-  offset += 1;
+  offset += sizeof(uint64_t);
-  set_uint8(msg + offset, SR_PROTO_VERSION);
+  set_uint32(msg + offset, htonl(SR_PROTO_VERSION));
-  offset += 1;
+  offset += sizeof(uint32_t);
   memcpy(msg + offset, hashed_reveals, DIGEST256_LEN);
   offset += DIGEST256_LEN;
   if (previous_srv != NULL) {
@@ -505,7 +505,7 @@ srv_to_ns_string(const sr_srv_t *srv, const char *key)
   tor_assert(key);
 
   sr_srv_encode(srv_hash_encoded, sizeof(srv_hash_encoded), srv);
-  tor_asprintf(&srv_str, "%s %d %s\n", key,
+  tor_asprintf(&srv_str, "%s %" PRIu64 " %s\n", key,
                srv->num_reveals, srv_hash_encoded);
   log_debug(LD_DIR, "SR: Consensus SRV line: %s", srv_str);
   return srv_str;
@@ -962,7 +962,7 @@ sr_generate_our_commit(time_t timestamp, const authority_cert_t *my_rsa_cert)
 void
 sr_compute_srv(void)
 {
-  size_t reveal_num = 0;
+  uint64_t reveal_num = 0;
   char *reveals = NULL;
   smartlist_t *chunks, *commits;
   digestmap_t *state_commits;
@@ -1019,8 +1019,7 @@ sr_compute_srv(void)
                          SR_DIGEST_ALG)) {
       goto end;
     }
-    tor_assert(reveal_num < UINT8_MAX);
+    current_srv = generate_srv(hashed_reveals, reveal_num,
-    current_srv = generate_srv(hashed_reveals, (uint8_t) reveal_num,
                                sr_state_get_previous_srv());
     sr_state_set_current_srv(current_srv);
     /* We have a fresh SRV, flag our state. */
@@ -1042,7 +1041,8 @@ sr_srv_t *
 sr_parse_srv(const smartlist_t *args)
 {
   char *value;
-  int num_reveals, ok, ret;
+  int ok, ret;
+  uint64_t num_reveals;
   sr_srv_t *srv = NULL;
 
   tor_assert(args);
@@ -1052,8 +1052,8 @@ sr_parse_srv(const smartlist_t *args)
   }
 
   /* First argument is the number of reveal values */
-  num_reveals = (int)tor_parse_long(smartlist_get(args, 0),
+  num_reveals = tor_parse_uint64(smartlist_get(args, 0),
-                               10, 0, INT32_MAX, &ok, NULL);
+                                 10, 0, UINT64_MAX, &ok, NULL);
   if (!ok) {
     goto end;
   }

src/or/shared_random.h

@@ -30,9 +30,9 @@
  * timestamp and the hashed random number. This adds up to 40 bytes. */
 #define SR_REVEAL_LEN (sizeof(uint64_t) + DIGEST256_LEN)
 /* Size of SRV message length. The construction is has follow:
- *  "shared-random" | INT_8(reveal_num) | INT_8(version) | PREV_SRV */
+ *  "shared-random" | INT_8(reveal_num) | INT_4(version) | PREV_SRV */
 #define SR_SRV_MSG_LEN \
-  (SR_SRV_TOKEN_LEN + 1 + 1 + DIGEST256_LEN)
+  (SR_SRV_TOKEN_LEN + sizeof(uint64_t) + sizeof(uint32_t) + DIGEST256_LEN)
 
 /* Length of base64 encoded commit NOT including the NULL terminated byte.
  * Formula is taken from base64_encode_size. */
@@ -62,7 +62,7 @@ typedef enum {
 /* A shared random value (SRV). */
 typedef struct sr_srv_t {
   /* The number of reveal values used to derive this SRV. */
-  int num_reveals;
+  uint64_t num_reveals;
   /* The actual value. This is the stored result of SHA3-256. */
   uint8_t value[DIGEST256_LEN];
 } sr_srv_t;

src/or/shared_random_state.c

@@ -60,7 +60,7 @@ disk_state_validate_cb(void *old_state, void *state, void *default_state,
 
 /* Array of variables that are saved to disk as a persistent state. */
 static config_var_t state_vars[] = {
-  V(Version,                    INT, "0"),
+  V(Version,                    UINT, "0"),
   V(TorVersion,                 STRING, NULL),
   V(ValidAfter,                 ISOTIME, NULL),
   V(ValidUntil,                 ISOTIME, NULL),
@@ -590,7 +590,7 @@ disk_state_put_srv_line(const sr_srv_t *srv, config_line_t *line)
     return;
   }
   sr_srv_encode(encoded, sizeof(encoded), srv);
-  tor_asprintf(&line->value, "%d %s", srv->num_reveals, encoded);
+  tor_asprintf(&line->value, "%" PRIu64 " %s", srv->num_reveals, encoded);
 }
 
 /* Reset disk state that is free allocated memory and zeroed the object. */

src/or/shared_random_state.h

@@ -36,7 +36,7 @@ typedef struct sr_state_t {
   /* Filename of the state file on disk. */
   char *fname;
   /* Version of the protocol. */
-  uint8_t version;
+  uint32_t version;
   /* The valid-after of the voting period we have prepared the state for. */
   time_t valid_after;
   /* Until when is this state valid? */
@@ -76,7 +76,7 @@ typedef struct sr_state_t {
 typedef struct sr_disk_state_t {
   uint32_t magic_;
   /* Version of the protocol. */
-  int Version;
+  uint32_t Version;
   /* Version of our running tor. */
   char *TorVersion;
   /* Creation time of this state */

src/test/test_shared_random.c

@@ -785,9 +785,6 @@ test_sr_compute_srv(void *arg)
 #define SRV_TEST_VECTOR \
   "2A9B1D6237DAB312A40F575DA85C147663E7ED3F80E9555395F15B515C74253D"
 
-  MOCK(trusteddirserver_get_by_v3_auth_digest,
-       trusteddirserver_get_by_v3_auth_digest_m);
-
   MOCK(trusteddirserver_get_by_v3_auth_digest,
        trusteddirserver_get_by_v3_auth_digest_m);