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Refactor duplicate code in authority_certs_fetch_missing

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This commit is contained in:
teor (Tim Wilson-Brown) 2016-07-01 10:18:28 +10:00
parent d3ca6fe475
commit f90bfaae8d
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1 changed files with 31 additions and 38 deletions
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69
src/or/routerlist.c
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@ -834,6 +834,33 @@ authority_cert_dl_looks_uncertain(const char *id_digest)
return n_failures >= N_AUTH_CERT_DL_FAILURES_TO_BUG_USER;
}
/* Fetch the authority certificates specified in resource.
* If rs is not NULL, fetch from rs, otherwise, fetch from a random directory
* mirror. */
static void
authority_certs_fetch_resource_impl(const char *resource,
const routerstatus_t *rs)
{
if (rs) {
/* If we've just downloaded a consensus from a directory, re-use that
* directory */
int get_via_tor = purpose_needs_anonymity(
DIR_PURPOSE_FETCH_CERTIFICATE, 0);
const dir_indirection_t indirection = get_via_tor ? DIRIND_ANONYMOUS
: DIRIND_ONEHOP;
directory_initiate_command_routerstatus(rs,
DIR_PURPOSE_FETCH_CERTIFICATE,
0, indirection, resource, NULL,
0, 0);
} else {
/* Otherwise, we want certs from a random fallback or directory
* mirror, because they will almost always succeed. */
directory_get_from_dirserver(DIR_PURPOSE_FETCH_CERTIFICATE, 0,
resource, PDS_RETRY_IF_NO_SERVERS,
DL_WANT_ANY_DIRSERVER);
}
}
/** Try to download any v3 authority certificates that we may be missing. If
* <b>status</b> is provided, try to get all the ones that were used to sign
* <b>status</b>. Additionally, try to have a non-expired certificate for
@ -1072,25 +1099,8 @@ authority_certs_fetch_missing(networkstatus_t *status, time_t now,
if (smartlist_len(fps) > 1) {
resource = smartlist_join_strings(fps, "", 0, NULL);
/* If we've just downloaded a consensus from a directory, re-use that
* directory */
if (rs) {
int get_via_tor = purpose_needs_anonymity(
DIR_PURPOSE_FETCH_CERTIFICATE, 0);
const dir_indirection_t indirection = get_via_tor ? DIRIND_ANONYMOUS
: DIRIND_ONEHOP;
directory_initiate_command_routerstatus(rs,
DIR_PURPOSE_FETCH_CERTIFICATE,
0, indirection, resource, NULL,
0, 0);
} else {
/* Otherwise, we want certs from a random fallback or directory
* mirror, because they will almost always succeed. */
directory_get_from_dirserver(DIR_PURPOSE_FETCH_CERTIFICATE, 0,
resource, PDS_RETRY_IF_NO_SERVERS,
DL_WANT_ANY_DIRSERVER);
}
/* rs is the directory that just gave us a consensus or certificates */
authority_certs_fetch_resource_impl(resource, rs);
tor_free(resource);
}
/* else we didn't add any: they were all pending */
@ -1133,25 +1143,8 @@ authority_certs_fetch_missing(networkstatus_t *status, time_t now,
if (smartlist_len(fp_pairs) > 1) {
resource = smartlist_join_strings(fp_pairs, "", 0, NULL);
/* If we've just downloaded a consensus from a directory, re-use that
* directory */
if (rs) {
int get_via_tor = purpose_needs_anonymity(
DIR_PURPOSE_FETCH_CERTIFICATE, 0);
const dir_indirection_t indirection = get_via_tor ? DIRIND_ANONYMOUS
: DIRIND_ONEHOP;
directory_initiate_command_routerstatus(rs,
DIR_PURPOSE_FETCH_CERTIFICATE,
0, indirection, resource, NULL,
0, 0);
} else {
/* Otherwise, we want certs from a random fallback or directory
* mirror, because they will almost always succeed. */
directory_get_from_dirserver(DIR_PURPOSE_FETCH_CERTIFICATE, 0,
resource, PDS_RETRY_IF_NO_SERVERS,
DL_WANT_ANY_DIRSERVER);
}
/* rs is the directory that just gave us a consensus or certificates */
authority_certs_fetch_resource_impl(resource, rs);
tor_free(resource);
}
/* else they were all pending */