/* Helper function: This handles the PUT state action using an
* <b>obj_type</b> and <b>data</b> needed for the action. */
static void
state_query_put_(sr_state_object_t obj_type, void *data)
{
switch (obj_type) {
case SR_STATE_OBJ_COMMIT:
{
sr_commit_t *commit = data;
tor_assert(commit);
commit_add_to_state(commit, sr_state);
break;
}
case SR_STATE_OBJ_CURSRV:
sr_state->current_srv = (sr_srv_t *) data;
break;
case SR_STATE_OBJ_PREVSRV:
sr_state->previous_srv = (sr_srv_t *) data;
break;
case SR_STATE_OBJ_VALID_AFTER:
sr_state->valid_after = *((time_t *) data);
break;
/* It's not allowed to change the phase nor the full commitments map from
* the state. The phase is decided during a strict process post voting and
* the commits should be put individually. */
case SR_STATE_OBJ_PHASE:
case SR_STATE_OBJ_COMMITS:
default:
tor_assert(0);
}
}
/* Parse the Commit line(s) in the disk state and translate them to the
* the memory state. Return 0 on success else -1 on error. */
static int
disk_state_parse_commits(sr_state_t *state,
const sr_disk_state_t *disk_state)
{
config_line_t *line;
smartlist_t *args = NULL;
tor_assert(state);
tor_assert(disk_state);
for (line = disk_state->Commit; line; line = line->next) {
sr_commit_t *commit = NULL;
/* Extra safety. */
if (strcasecmp(line->key, dstate_commit_key) ||
line->value == NULL) {
/* Ignore any lines that are not commits. */
tor_fragile_assert();
continue;
}
args = smartlist_new();
smartlist_split_string(args, line->value, " ",
SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 0);
if (smartlist_len(args) < 3) {
log_warn(LD_BUG, "SR: Too few arguments in Commit Line: %s",
escaped(line->value));
goto error;
}
commit = sr_parse_commit(args);
if (commit == NULL) {
/* Ignore badly formed commit. It could also be a authority
* fingerprint that we don't know about so it shouldn't be used. */
smartlist_free(args);
continue;
}
/* We consider parseable commit from our disk state to be valid because
* they need to be in the first place to get in there. */
commit->valid = 1;
/* Add commit to our state pointer. */
commit_add_to_state(commit, state);
SMARTLIST_FOREACH(args, char *, cp, tor_free(cp));
smartlist_free(args);
}
return 0;
error:
SMARTLIST_FOREACH(args, char *, cp, tor_free(cp));
smartlist_free(args);
return -1;
}
/* Helper function: This handles the PUT state action using an
* <b>obj_type</b> and <b>data</b> needed for the action.
* PUT frees the previous data before replacing it, if needed. */
static void
state_query_put_(sr_state_object_t obj_type, void *data)
{
if (BUG(!sr_state))
return;
switch (obj_type) {
case SR_STATE_OBJ_COMMIT:
{
sr_commit_t *commit = data;
tor_assert(commit);
/* commit_add_to_state() frees the old commit, if there is one */
commit_add_to_state(commit, sr_state);
break;
}
case SR_STATE_OBJ_CURSRV:
/* Check if the new pointer is the same as the old one: if it is, it's
* probably a bug. The caller may have confused current and previous,
* or they may have forgotten to sr_srv_dup().
* Putting NULL multiple times is allowed. */
if (!BUG(data && sr_state->current_srv == (sr_srv_t *) data)) {
/* We own the old SRV, so we need to free it. */
state_query_del_(SR_STATE_OBJ_CURSRV, NULL);
sr_state->current_srv = (sr_srv_t *) data;
}
break;
case SR_STATE_OBJ_PREVSRV:
/* Check if the new pointer is the same as the old one: if it is, it's
* probably a bug. The caller may have confused current and previous,
* or they may have forgotten to sr_srv_dup().
* Putting NULL multiple times is allowed. */
if (!BUG(data && sr_state->previous_srv == (sr_srv_t *) data)) {
/* We own the old SRV, so we need to free it. */
state_query_del_(SR_STATE_OBJ_PREVSRV, NULL);
sr_state->previous_srv = (sr_srv_t *) data;
}
break;
case SR_STATE_OBJ_VALID_AFTER:
sr_state->valid_after = *((time_t *) data);
break;
/* It's not allowed to change the phase nor the full commitments map from
* the state. The phase is decided during a strict process post voting and
* the commits should be put individually. */
case SR_STATE_OBJ_PHASE:
case SR_STATE_OBJ_COMMITS:
default:
tor_assert(0);
}
}
