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r12981@Kushana: nickm | 2007-05-18 14:12:19 -0400
First cut at code to download extra-info docs. Also note a bad bug in directory.c (look for the string BUG BUG BUG). svn:r10209
This commit is contained in:
Nick Mathewson
parent
a187704872
commit
ec55cf526d
@ -87,8 +87,7 @@ Changes in version 0.2.0.1-alpha - 2007-??-??
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routers. These documents contain fields from router descriptors
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that aren't usually needed, and that use a lot of excess
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bandwidth. Once these fields are removed from router descriptors,
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the bandwidth savings should be about 60%. (Limitation: servers
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do not yet upload extra-info documents.) [Partially implements
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the bandwidth savings should be about 60%. [Partially implements
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proposal 104.]
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- Directory authorities allow multiple router descriptors and/or extra
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info documents to be uploaded in a single go. This will make
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@ -96,6 +95,10 @@ Changes in version 0.2.0.1-alpha - 2007-??-??
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- New config option V2AuthoritativeDirectory that all directory
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authorities should set. This will let future authorities choose
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not to serve V2 directory information.
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- Servers upload extra-info documents to any authority that accepts
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them. Authorities (and caches that have been configured to download
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extra-info documents) download them as needed. [Partially implements
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proposal 104.]
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o Minor features (controller):
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- Add a new config option __DisablePredictedCircuits designed for
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3
doc/TODO
3
doc/TODO
@ -92,7 +92,8 @@ Things we'd like to do in 0.2.0.x:
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version 0.2.0.0-alpha-dev (r10070) or later.
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o Implement, but make it option-controlled.
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o Make it always-on once it seems to work.
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- Implement option to download and cache extra-info documents.
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o Implement option to download and cache extra-info documents.
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- Improve the 'retry' logic on extra-info documents.
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- Drop bandwidth history from router-descriptors
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- 105: Version negotiation for the Tor protocol (finalize by Jun 1)
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- 108: Base "Stable" Flag on Mean Time Between Failures
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@ -155,6 +155,7 @@ static config_var_t _option_vars[] = {
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VAR("DirPort", UINT, DirPort, "0"),
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OBSOLETE("DirPostPeriod"),
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VAR("DirServer", LINELIST, DirServers, NULL),
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VAR("DownloadExtraInfo", BOOL, DownloadExtraInfo, "0"),
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VAR("EnforceDistinctSubnets", BOOL, EnforceDistinctSubnets,"1"),
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VAR("EntryNodes", STRING, EntryNodes, NULL),
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VAR("ExcludeNodes", STRING, ExcludeNodes, NULL),
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@ -2555,6 +2556,11 @@ options_validate(or_options_t *old_options, or_options_t *options,
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"UseEntryGuards. Disabling.");
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options->UseEntryGuards = 0;
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}
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if (!options->DownloadExtraInfo) {
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log_info(LD_CONFIG, "Authoritative directories always try to download "
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"extra-info documents. Setting DownloadExtraInfo.");
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options->DownloadExtraInfo = 1;
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}
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}
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if (options->AuthoritativeDir && !options->DirPort)
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@ -45,7 +45,8 @@ static void connection_dir_download_routerdesc_failed(dir_connection_t *conn);
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static void dir_networkstatus_download_failed(smartlist_t *failed,
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int status_code);
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static void dir_routerdesc_download_failed(smartlist_t *failed,
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int status_code);
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int status_code,
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int was_extrainfo);
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static void note_request(const char *key, size_t bytes);
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/********* START VARIABLES **********/
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@ -78,7 +79,8 @@ purpose_is_private(uint8_t purpose)
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purpose == DIR_PURPOSE_UPLOAD_DIR ||
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purpose == DIR_PURPOSE_FETCH_RUNNING_LIST ||
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purpose == DIR_PURPOSE_FETCH_NETWORKSTATUS ||
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purpose == DIR_PURPOSE_FETCH_SERVERDESC)
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purpose == DIR_PURPOSE_FETCH_SERVERDESC ||
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purpose == DIR_PURPOSE_FETCH_EXTRAINFO)
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return 0;
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return 1;
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}
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@ -106,6 +108,28 @@ authority_type_to_string(authority_type_t auth)
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return result;
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}
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/* DOCDOC */
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int
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router_supports_extrainfo(const char *identity_digest, int is_authority)
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{
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routerinfo_t *ri = router_get_by_digest(identity_digest);
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local_routerstatus_t *lrs;
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if (ri) {
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if (ri->caches_extra_info)
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return 1;
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if (is_authority && ri->platform &&
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tor_version_as_new_as(ri->platform, "Tor 0.2.0.0-alpha-dev (r10070)"))
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return 1;
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}
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if (is_authority) {
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lrs = router_get_combined_status_by_digest(identity_digest);
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if (lrs && lrs->status.version_supports_extrainfo_upload)
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return 1;
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}
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return 0;
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}
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/** Start a connection to every suitable directory server, using
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* connection purpose 'purpose' and uploading the payload 'payload'
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* (length 'payload_len'). The purpose should be one of
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@ -131,9 +155,6 @@ directory_post_to_dirservers(uint8_t purpose, authority_type_t type,
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SMARTLIST_FOREACH(dirservers, trusted_dir_server_t *, ds,
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{
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routerstatus_t *rs = &(ds->fake_status.status);
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local_routerstatus_t *lrs = router_get_combined_status_by_digest(
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ds->digest);
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int new_enough;
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size_t upload_len = payload_len;
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if ((type & ds->type) == 0)
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@ -143,10 +164,7 @@ directory_post_to_dirservers(uint8_t purpose, authority_type_t type,
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if (purpose == DIR_PURPOSE_UPLOAD_DIR)
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ds->has_accepted_serverdesc = 0;
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new_enough = (lrs && lrs->status.version_supports_extrainfo_upload) ||
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(router_digest_version_as_new_as(ds->digest,
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"Tor 0.2.0.0-alpha-dev (r10070)"));
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if (extrainfo_len && new_enough) {
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if (extrainfo_len && router_supports_extrainfo(ds->digest, 1)) {
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upload_len += extrainfo_len;
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log_info(LD_DIR, "Uploading an extrainfo (length %d)",
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(int) extrainfo_len);
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@ -182,6 +200,9 @@ directory_get_from_dirserver(uint8_t purpose, const char *resource,
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/* FFFF we could break this switch into its own function, and call
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* it elsewhere in directory.c. -RD */
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switch (purpose) {
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case DIR_PURPOSE_FETCH_EXTRAINFO:
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type = EXTRAINFO_CACHE | V2_AUTHORITY;
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break;
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case DIR_PURPOSE_FETCH_NETWORKSTATUS:
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case DIR_PURPOSE_FETCH_SERVERDESC:
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type = V2_AUTHORITY;
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@ -344,7 +365,8 @@ connection_dir_request_failed(dir_connection_t *conn)
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log_info(LD_DIR, "Giving up on directory server at '%s'; retrying",
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conn->_base.address);
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connection_dir_download_networkstatus_failed(conn, -1);
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} else if (conn->_base.purpose == DIR_PURPOSE_FETCH_SERVERDESC) {
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} else if (conn->_base.purpose == DIR_PURPOSE_FETCH_SERVERDESC ||
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conn->_base.purpose == DIR_PURPOSE_FETCH_EXTRAINFO) {
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log_info(LD_DIR, "Giving up on directory server at '%s'; retrying",
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conn->_base.address);
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connection_dir_download_routerdesc_failed(conn);
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@ -389,7 +411,7 @@ connection_dir_download_networkstatus_failed(dir_connection_t *conn,
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}
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/** Called when an attempt to download one or more router descriptors
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* on connection <b>conn</b> failed.
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* or extra-info documents on connection <b>conn</b> failed.
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*/
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static void
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connection_dir_download_routerdesc_failed(dir_connection_t *conn)
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@ -399,6 +421,8 @@ connection_dir_download_routerdesc_failed(dir_connection_t *conn)
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/* No need to relaunch descriptor downloads here: we already do it
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* every 10 seconds (DESCRIPTOR_RETRY_INTERVAL) in main.c. */
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tor_assert(conn->_base.purpose == DIR_PURPOSE_FETCH_SERVERDESC ||
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conn->_base.purpose == DIR_PURPOSE_FETCH_EXTRAINFO);
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(void) conn;
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}
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@ -452,6 +476,9 @@ directory_initiate_command(const char *address, uint32_t addr,
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case DIR_PURPOSE_FETCH_SERVERDESC:
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log_debug(LD_DIR,"initiating server descriptor fetch");
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break;
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case DIR_PURPOSE_FETCH_EXTRAINFO:
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log_debug(LD_DIR,"initiating extra-info fetch");
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break;
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default:
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log_err(LD_BUG, "Unrecognized directory connection purpose.");
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tor_assert(0);
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@ -611,6 +638,12 @@ directory_send_command(dir_connection_t *conn,
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url = tor_malloc(len);
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tor_snprintf(url, len, "/tor/server/%s", resource);
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break;
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case DIR_PURPOSE_FETCH_EXTRAINFO:
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httpcommand = "GET";
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len = strlen(resource)+32;
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url = tor_malloc(len);
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tor_snprintf(url, len, "/tor/extra/%s", resource);
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break;
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case DIR_PURPOSE_UPLOAD_DIR:
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tor_assert(!resource);
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tor_assert(payload);
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@ -912,7 +945,8 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
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compress_method_t compression;
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int plausible;
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int skewed=0;
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int allow_partial = conn->_base.purpose == DIR_PURPOSE_FETCH_SERVERDESC;
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int allow_partial = (conn->_base.purpose == DIR_PURPOSE_FETCH_SERVERDESC ||
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conn->_base.purpose == DIR_PURPOSE_FETCH_EXTRAINFO);
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int was_compressed=0;
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time_t now = time(NULL);
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@ -1165,12 +1199,18 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
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}
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}
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if (conn->_base.purpose == DIR_PURPOSE_FETCH_SERVERDESC) {
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if (conn->_base.purpose == DIR_PURPOSE_FETCH_SERVERDESC ||
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conn->_base.purpose == DIR_PURPOSE_FETCH_EXTRAINFO) {
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int was_ei = conn->_base.purpose == DIR_PURPOSE_FETCH_EXTRAINFO;
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smartlist_t *which = NULL;
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int n_asked_for = 0;
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log_info(LD_DIR,"Received server info (size %d) from server '%s:%d'",
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log_info(LD_DIR,"Received %s (size %d) from server '%s:%d'",
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was_ei ? "server info" : "extra server info",
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(int)body_len, conn->_base.address, conn->_base.port);
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note_request(was_compressed?"dl/server.z":"dl/server", orig_len);
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if (was_ei)
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note_request(was_compressed?"dl/extra.z":"dl/extra", orig_len);
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else
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note_request(was_compressed?"dl/server.z":"dl/server", orig_len);
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if (conn->requested_resource &&
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!strcmpstart(conn->requested_resource,"d/")) {
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which = smartlist_create();
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@ -1192,7 +1232,7 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
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if (!which) {
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connection_dir_download_routerdesc_failed(conn);
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} else {
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dir_routerdesc_download_failed(which, status_code);
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dir_routerdesc_download_failed(which, status_code, was_ei);
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SMARTLIST_FOREACH(which, char *, cp, tor_free(cp));
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smartlist_free(which);
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}
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@ -1207,15 +1247,19 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
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if (which || (conn->requested_resource &&
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!strcmpstart(conn->requested_resource, "all"))) {
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/* as we learn from them, we remove them from 'which' */
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router_load_routers_from_string(body, SAVED_NOWHERE, which);
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directory_info_has_arrived(now, 0);
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if (was_ei) {
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router_load_extrainfo_from_string(body, SAVED_NOWHERE, which);
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} else {
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router_load_routers_from_string(body, SAVED_NOWHERE, which);
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directory_info_has_arrived(now, 0);
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}
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}
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if (which) { /* mark remaining ones as failed */
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log_info(LD_DIR, "Received %d/%d routers requested from %s:%d",
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n_asked_for-smartlist_len(which), n_asked_for,
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conn->_base.address, (int)conn->_base.port);
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if (smartlist_len(which)) {
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dir_routerdesc_download_failed(which, status_code);
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dir_routerdesc_download_failed(which, status_code, was_ei);
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}
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SMARTLIST_FOREACH(which, char *, cp, tor_free(cp));
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smartlist_free(which);
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@ -2078,17 +2122,23 @@ dir_networkstatus_download_failed(smartlist_t *failed, int status_code)
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}
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/** Called when one or more routerdesc fetches have failed (with uppercase
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* fingerprints listed in <b>failed</b>). */
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* fingerprints listed in <b>failed</b>).
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*
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* DOCDOC was_extrainfo */
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static void
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dir_routerdesc_download_failed(smartlist_t *failed, int status_code)
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dir_routerdesc_download_failed(smartlist_t *failed, int status_code,
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int was_extrainfo)
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{
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char digest[DIGEST_LEN];
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local_routerstatus_t *rs;
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time_t now = time(NULL);
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int server = server_mode(get_options()) && get_options()->DirPort;
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(void) was_extrainfo;
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SMARTLIST_FOREACH(failed, const char *, cp,
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{
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base16_decode(digest, DIGEST_LEN, cp, strlen(cp));
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/* XXXX020 BUG BUG BUG. Fails miserably when requesting by desc digest
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* rather than by identity digest. */
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rs = router_get_combined_status_by_digest(digest);
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if (!rs || rs->n_download_failures >= MAX_ROUTERDESC_DOWNLOAD_FAILURES)
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continue;
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@ -668,6 +668,11 @@ directory_info_has_arrived(time_t now, int from_cache)
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"build a circuit.");
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update_router_descriptor_downloads(now);
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return;
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} else {
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/* Don't even bother trying to get extrainfo until the rest of our
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* directory info is up-to-date */
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if (options->DownloadExtraInfo)
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update_extrainfo_downloads(now);
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}
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if (server_mode(options) && !we_are_hibernating() && !from_cache &&
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@ -862,6 +867,7 @@ run_scheduled_events(time_t now)
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/* XXXX Maybe we should do this every 10sec when not enough info,
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* and every 60sec when we have enough info -NM */
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update_router_descriptor_downloads(now);
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update_extrainfo_downloads(now);
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time_to_try_getting_descriptors = now + DESCRIPTOR_RETRY_INTERVAL;
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}
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24
src/or/or.h
24
src/or/or.h
@ -360,14 +360,17 @@ typedef enum {
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/** A connection to a directory server: download one or more server
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* descriptors. */
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#define DIR_PURPOSE_FETCH_SERVERDESC 6
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/** A connection to a directory server: download one or more extra-info
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* documents. */
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#define DIR_PURPOSE_FETCH_EXTRAINFO 7
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/** A connection to a directory server: upload a server descriptor. */
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#define DIR_PURPOSE_UPLOAD_DIR 7
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#define DIR_PURPOSE_UPLOAD_DIR 8
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/** A connection to a directory server: upload a rendezvous
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* descriptor. */
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#define DIR_PURPOSE_UPLOAD_RENDDESC 8
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#define DIR_PURPOSE_UPLOAD_RENDDESC 9
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/** Purpose for connection at a directory server. */
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#define DIR_PURPOSE_SERVER 9
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#define _DIR_PURPOSE_MAX 9
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#define DIR_PURPOSE_SERVER 10
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#define _DIR_PURPOSE_MAX 10
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#define _EXIT_PURPOSE_MIN 1
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/** This exit stream wants to do an ordinary connect. */
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@ -1068,6 +1071,8 @@ typedef struct signed_descriptor_t {
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off_t saved_offset;
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/* DOCDOC */
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unsigned int do_not_cache : 1;
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/* DOCDOC; XXXX020 replace with something smarter. */
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unsigned int tried_downloading_extrainfo : 1;
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} signed_descriptor_t;
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/** Information about another onion router in the network. */
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@ -1322,6 +1327,7 @@ typedef enum {
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V2_AUTHORITY = 1 << 1,
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HIDSERV_AUTHORITY = 1 << 2,
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BRIDGE_AUTHORITY = 1 << 3,
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EXTRAINFO_CACHE = 1 << 4, /* not precisely an authority type. */
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} authority_type_t;
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#define CRYPT_PATH_MAGIC 0x70127012u
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@ -1920,6 +1926,10 @@ typedef struct {
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/** If true, we try resolving hostnames with weird characters. */
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int ServerDNSAllowNonRFC953Hostnames;
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/** If true, we try to download extra-info documents (and we serve them,
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* if we are a cache). For authorities, this is always true. */
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int DownloadExtraInfo;
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} or_options_t;
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/** Persistent state for an onion router, as saved to disk. */
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@ -2560,6 +2570,7 @@ int dir_split_resource_into_fingerprints(const char *resource,
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smartlist_t *fp_out, int *compresseed_out,
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int decode_hex, int sort_uniq);
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char *directory_dump_request_log(void);
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int router_supports_extrainfo(const char *identity_digest, int is_authority);
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/********************************* dirserv.c ***************************/
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@ -3125,6 +3136,10 @@ int router_load_single_router(const char *s, uint8_t purpose,
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void router_load_routers_from_string(const char *s,
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saved_location_t saved_location,
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smartlist_t *requested_fingerprints);
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void router_load_extrainfo_from_string(const char *s,
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saved_location_t saved_location,
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smartlist_t *requested_fps);
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typedef enum {
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NS_FROM_CACHE, NS_FROM_DIR_BY_FP, NS_FROM_DIR_ALL, NS_GENERATED
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} networkstatus_source_t;
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@ -3147,6 +3162,7 @@ local_routerstatus_t *router_get_combined_status_by_digest(const char *digest);
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routerstatus_t *routerstatus_get_by_hexdigest(const char *hexdigest);
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void update_networkstatus_downloads(time_t now);
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void update_router_descriptor_downloads(time_t now);
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void update_extrainfo_downloads(time_t now);
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void routers_update_all_from_networkstatus(time_t now);
|
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void routers_update_status_from_networkstatus(smartlist_t *routers,
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int reset_failures);
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@ -1341,7 +1341,7 @@ router_dump_router_to_string(char *s, size_t maxlen, routerinfo_t *router,
|
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"opt fingerprint %s\n"
|
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"uptime %ld\n"
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"bandwidth %d %d %d\n"
|
||||
"opt extra-info-digest %s\n"
|
||||
"opt extra-info-digest %s\n%s"
|
||||
"onion-key\n%s"
|
||||
"signing-key\n%s"
|
||||
"%s%s%s",
|
||||
@ -1357,6 +1357,7 @@ router_dump_router_to_string(char *s, size_t maxlen, routerinfo_t *router,
|
||||
(int) router->bandwidthburst,
|
||||
(int) router->bandwidthcapacity,
|
||||
extra_info_digest,
|
||||
options->DownloadExtraInfo ? "opt caches-extra-info 1\n" : "",
|
||||
onion_pkey, identity_pkey,
|
||||
family_line, bandwidth_usage,
|
||||
we_are_hibernating() ? "opt hibernating 1\n" : "");
|
||||
|
||||
@ -41,8 +41,6 @@ static local_routerstatus_t *router_get_combined_status_by_nickname(
|
||||
int warn_if_unnamed);
|
||||
static void update_router_have_minimum_dir_info(void);
|
||||
static void router_dir_info_changed(void);
|
||||
static void router_load_extrainfo_from_string(const char *s,
|
||||
saved_location_t saved_location);
|
||||
|
||||
/****************************************************************************/
|
||||
|
||||
@ -438,7 +436,7 @@ router_reload_router_list_impl(int extrainfo)
|
||||
stats->store_len = (*mmap_ptr)->size;
|
||||
if (extrainfo)
|
||||
router_load_extrainfo_from_string((*mmap_ptr)->data,
|
||||
SAVED_IN_CACHE);
|
||||
SAVED_IN_CACHE, NULL);
|
||||
else
|
||||
router_load_routers_from_string((*mmap_ptr)->data,
|
||||
SAVED_IN_CACHE, NULL);
|
||||
@ -450,7 +448,7 @@ router_reload_router_list_impl(int extrainfo)
|
||||
contents = read_file_to_str(fname, RFTS_BIN|RFTS_IGNORE_MISSING, NULL);
|
||||
if (contents) {
|
||||
if (extrainfo)
|
||||
router_load_extrainfo_from_string(contents, SAVED_IN_JOURNAL);
|
||||
router_load_extrainfo_from_string(contents, SAVED_IN_JOURNAL, NULL);
|
||||
else
|
||||
router_load_routers_from_string(contents, SAVED_IN_JOURNAL, NULL);
|
||||
tor_free(contents);
|
||||
@ -644,6 +642,9 @@ router_pick_directory_server_impl(int requireother, int fascistfirewall,
|
||||
is_trusted = router_digest_is_trusted_dir(status->identity_digest);
|
||||
if ((type & V2_AUTHORITY) && !(status->is_v2_dir || is_trusted))
|
||||
continue;
|
||||
if ((type & EXTRAINFO_CACHE) &&
|
||||
!router_supports_extrainfo(status->identity_digest, 0))
|
||||
continue;
|
||||
if (prefer_tunnel &&
|
||||
status->version_supports_begindir &&
|
||||
(!fascistfirewall ||
|
||||
@ -714,6 +715,9 @@ router_pick_trusteddirserver_impl(authority_type_t type,
|
||||
if (!d->is_running) continue;
|
||||
if ((type & d->type) == 0)
|
||||
continue;
|
||||
if ((type & EXTRAINFO_CACHE) &&
|
||||
!router_supports_extrainfo(d->digest, 1))
|
||||
continue;
|
||||
if (requireother && me && router_digest_is_me(d->digest))
|
||||
continue;
|
||||
if (prefer_tunnel &&
|
||||
@ -2594,9 +2598,10 @@ router_load_routers_from_string(const char *s, saved_location_t saved_location,
|
||||
}
|
||||
|
||||
/** DOCDOC */
|
||||
static void
|
||||
void
|
||||
router_load_extrainfo_from_string(const char *s,
|
||||
saved_location_t saved_location)
|
||||
saved_location_t saved_location,
|
||||
smartlist_t *requested_fingerprints)
|
||||
{
|
||||
smartlist_t *extrainfo_list = smartlist_create();
|
||||
const char *msg;
|
||||
@ -2606,8 +2611,15 @@ router_load_extrainfo_from_string(const char *s,
|
||||
|
||||
log_info(LD_DIR, "%d elements to add", smartlist_len(extrainfo_list));
|
||||
|
||||
SMARTLIST_FOREACH(extrainfo_list, extrainfo_t *, ei,
|
||||
router_add_extrainfo_to_routerlist(ei, &msg, from_cache, !from_cache));
|
||||
SMARTLIST_FOREACH(extrainfo_list, extrainfo_t *, ei, {
|
||||
if (requested_fingerprints) {
|
||||
char fp[HEX_DIGEST_LEN+1];
|
||||
base16_encode(fp, sizeof(fp), ei->cache_info.signed_descriptor_digest,
|
||||
DIGEST_LEN);
|
||||
smartlist_string_remove(requested_fingerprints, fp);
|
||||
}
|
||||
router_add_extrainfo_to_routerlist(ei, &msg, from_cache, !from_cache);
|
||||
});
|
||||
|
||||
routerlist_assert_ok(routerlist);
|
||||
router_rebuild_store(0, 1);
|
||||
@ -4015,15 +4027,17 @@ routers_update_status_from_networkstatus(smartlist_t *routers,
|
||||
}
|
||||
|
||||
/** For every router descriptor we are currently downloading by descriptor
|
||||
* digest, set result[d] to 1. */
|
||||
* digest, set result[d] to 1. DOCDOC extrainfo */
|
||||
static void
|
||||
list_pending_descriptor_downloads(digestmap_t *result)
|
||||
list_pending_descriptor_downloads(digestmap_t *result, int extrainfo)
|
||||
{
|
||||
const char *prefix = "d/";
|
||||
size_t p_len = strlen(prefix);
|
||||
int i, n_conns;
|
||||
connection_t **carray;
|
||||
smartlist_t *tmp = smartlist_create();
|
||||
int purpose =
|
||||
extrainfo ? DIR_PURPOSE_FETCH_EXTRAINFO : DIR_PURPOSE_FETCH_SERVERDESC;
|
||||
|
||||
tor_assert(result);
|
||||
get_connection_array(&carray, &n_conns);
|
||||
@ -4031,7 +4045,7 @@ list_pending_descriptor_downloads(digestmap_t *result)
|
||||
for (i = 0; i < n_conns; ++i) {
|
||||
connection_t *conn = carray[i];
|
||||
if (conn->type == CONN_TYPE_DIR &&
|
||||
conn->purpose == DIR_PURPOSE_FETCH_SERVERDESC &&
|
||||
conn->purpose == purpose &&
|
||||
!conn->marked_for_close) {
|
||||
const char *resource = TO_DIR_CONN(conn)->requested_resource;
|
||||
if (!strcmpstart(resource, prefix))
|
||||
@ -4054,6 +4068,7 @@ list_pending_descriptor_downloads(digestmap_t *result)
|
||||
*/
|
||||
static void
|
||||
initiate_descriptor_downloads(routerstatus_t *source,
|
||||
int purpose,
|
||||
smartlist_t *digests,
|
||||
int lo, int hi)
|
||||
{
|
||||
@ -4081,14 +4096,11 @@ initiate_descriptor_downloads(routerstatus_t *source,
|
||||
|
||||
if (source) {
|
||||
/* We know which authority we want. */
|
||||
directory_initiate_command_routerstatus(source,
|
||||
DIR_PURPOSE_FETCH_SERVERDESC,
|
||||
directory_initiate_command_routerstatus(source, purpose,
|
||||
0, /* not private */
|
||||
resource, NULL, 0);
|
||||
} else {
|
||||
directory_get_from_dirserver(DIR_PURPOSE_FETCH_SERVERDESC,
|
||||
resource,
|
||||
1);
|
||||
directory_get_from_dirserver(purpose, resource, 1);
|
||||
}
|
||||
tor_free(resource);
|
||||
}
|
||||
@ -4133,7 +4145,7 @@ router_list_client_downloadable(void)
|
||||
return downloadable;
|
||||
|
||||
downloading = digestmap_new();
|
||||
list_pending_descriptor_downloads(downloading);
|
||||
list_pending_descriptor_downloads(downloading, 0);
|
||||
|
||||
routerstatus_list_update_from_networkstatus(now);
|
||||
SMARTLIST_FOREACH(routerstatus_list, local_routerstatus_t *, rs,
|
||||
@ -4277,7 +4289,8 @@ update_router_descriptor_client_downloads(time_t now)
|
||||
req_plural, n_downloadable, rtr_plural, n_per_request);
|
||||
smartlist_sort_digests(downloadable);
|
||||
for (i=0; i < n_downloadable; i += n_per_request) {
|
||||
initiate_descriptor_downloads(NULL, downloadable, i, i+n_per_request);
|
||||
initiate_descriptor_downloads(NULL, DIR_PURPOSE_FETCH_SERVERDESC,
|
||||
downloadable, i, i+n_per_request);
|
||||
}
|
||||
last_routerdesc_download_attempted = now;
|
||||
}
|
||||
@ -4313,7 +4326,7 @@ update_router_descriptor_cache_downloads(time_t now)
|
||||
|
||||
/* Set map[d]=1 for the digest of every descriptor that we are currently
|
||||
* downloading. */
|
||||
list_pending_descriptor_downloads(map);
|
||||
list_pending_descriptor_downloads(map, 0);
|
||||
|
||||
/* For the digest of every descriptor that we don't have, and that we aren't
|
||||
* downloading, add d to downloadable[i] if the i'th networkstatus knows
|
||||
@ -4411,7 +4424,8 @@ update_router_descriptor_cache_downloads(time_t now)
|
||||
log_info(LD_DIR, "Requesting %d descriptors from authority \"%s\"",
|
||||
smartlist_len(dl), ds->nickname);
|
||||
for (j=0; j < smartlist_len(dl); j += MAX_DL_PER_REQUEST) {
|
||||
initiate_descriptor_downloads(&(ds->fake_status.status), dl, j,
|
||||
initiate_descriptor_downloads(&(ds->fake_status.status),
|
||||
DIR_PURPOSE_FETCH_SERVERDESC, dl, j,
|
||||
j+MAX_DL_PER_REQUEST);
|
||||
}
|
||||
}
|
||||
@ -4437,6 +4451,63 @@ update_router_descriptor_downloads(time_t now)
|
||||
}
|
||||
}
|
||||
|
||||
/** DOCDOC */
|
||||
static INLINE int
|
||||
should_download_extrainfo(signed_descriptor_t *sd,
|
||||
const routerlist_t *rl,
|
||||
const digestmap_t *pending)
|
||||
{
|
||||
const char *d = sd->extra_info_digest;
|
||||
/* XXXX020 Check for failures; keep a failure count. Don't just
|
||||
* do this dumb "try once and give up" thing. */
|
||||
return (!sd->tried_downloading_extrainfo &&
|
||||
!tor_digest_is_zero(d) &&
|
||||
!digestmap_get(rl->extra_info_map, d) &&
|
||||
!digestmap_get(pending, d));
|
||||
}
|
||||
|
||||
/** DOCDOC */
|
||||
void
|
||||
update_extrainfo_downloads(time_t now)
|
||||
{
|
||||
or_options_t *options = get_options();
|
||||
routerlist_t *rl;
|
||||
smartlist_t *wanted;
|
||||
digestmap_t *pending;
|
||||
int i;
|
||||
(void) now;
|
||||
if (! options->DownloadExtraInfo)
|
||||
return;
|
||||
|
||||
pending = digestmap_new();
|
||||
list_pending_descriptor_downloads(pending, 1);
|
||||
rl = router_get_routerlist();
|
||||
wanted = smartlist_create();
|
||||
SMARTLIST_FOREACH(rl->routers, routerinfo_t *, ri, {
|
||||
if (should_download_extrainfo(&ri->cache_info, rl, pending)) {
|
||||
smartlist_add(wanted, ri->cache_info.extra_info_digest);
|
||||
ri->cache_info.tried_downloading_extrainfo = 1; /*XXXX020 be smarter.*/
|
||||
}
|
||||
});
|
||||
if (options->DirPort) {
|
||||
SMARTLIST_FOREACH(rl->old_routers, signed_descriptor_t *, sd, {
|
||||
if (should_download_extrainfo(sd, rl, pending)) {
|
||||
smartlist_add(wanted, sd->extra_info_digest);
|
||||
sd->tried_downloading_extrainfo = 1; /*XXXX020 be smarter. */
|
||||
}
|
||||
});
|
||||
}
|
||||
digestmap_free(pending, NULL);
|
||||
|
||||
smartlist_shuffle(wanted);
|
||||
for (i = 0; i < smartlist_len(wanted); i += MAX_DL_PER_REQUEST) {
|
||||
initiate_descriptor_downloads(NULL, DIR_PURPOSE_FETCH_EXTRAINFO,
|
||||
wanted, i, i + MAX_DL_PER_REQUEST);
|
||||
}
|
||||
|
||||
smartlist_free(wanted);
|
||||
}
|
||||
|
||||
/** Return the number of routerstatus_t in <b>entries</b> that we'd actually
|
||||
* use. */
|
||||
static int
|
||||
|
||||
Loading…
Reference in New Issue
Block a user