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Report HTTP reasons to directory clients. (Also, fix format on new TODO items)
svn:r3811
This commit is contained in:
Nick Mathewson
parent
d6a0e5bcc9
commit
2d40991427
12
doc/TODO
12
doc/TODO
@ -21,12 +21,11 @@ R o pick the whole path when you start the circuit.
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o finish messing with reachability stuff
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o if we jump in time a lot, then mark our circs and note that we
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haven't made a circ yet.
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actually give http reason phrases to dir clients, so they know why
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they're rejected.
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controller should have an event to learn about new addressmappings?
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how do ulimits work on win32, anyway?
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have a separate config option which caps bandwidth-to-advertise.
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o actually give http reason phrases to dir clients, so they know why
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they're rejected.
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- controller should have an event to learn about new addressmappings?
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- how do ulimits work on win32, anyway?
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- have a separate config option which caps bandwidth-to-advertise.
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For 0.1.0.x:
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@ -97,6 +96,7 @@ R - revised circ selection stuff.
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o Time out never-attached streams.
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o If we never get a CONNECTED back, we should put the stream back in
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CONTROLLER_WAIT, not in CIRCUIT_WAIT.
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- Add a way for the controller to say, "Hey, nuke this stream."
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- Tests for new controller features
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R o HTTPS proxy for OR CONNECT stuff. (For outgoing SSL connections to
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other ORs.)
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@ -56,6 +56,7 @@ static int
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connection_or_read_proxy_response(connection_t *conn) {
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char *headers;
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char *reason=NULL;
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int status_code;
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time_t date_header;
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int compression;
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@ -73,26 +74,31 @@ connection_or_read_proxy_response(connection_t *conn) {
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}
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if (parse_http_response(headers, &status_code, &date_header,
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&compression) < 0) {
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&compression, &reason) < 0) {
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log_fn(LOG_WARN,"Unparseable headers (connecting to '%s'). Closing.",
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conn->address);
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tor_free(headers);
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return -1;
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}
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if (!reason) reason = tor_strdup("[no reason given]");
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if (status_code == 200) {
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log_fn(LOG_INFO,"https connect successful (to '%s')! Launching tls.",
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conn->address);
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log_fn(LOG_INFO,
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"HTTPS connect to '%s' successful! (200 \"%s\") Starting TLS.",
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conn->address, reason);
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tor_free(reason);
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if (connection_tls_start_handshake(conn, 0) < 0) {
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/* TLS handshaking error of some kind. */
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connection_mark_for_close(conn);
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return -1;
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}
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return 0;
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}
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/* else, bad news on the status code */
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log_fn(LOG_WARN,"The https proxy sent back a bad status code %d. Closing.",
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status_code);
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log_fn(LOG_WARN,"The https proxy sent back an unexpected status code %d (\"%s\"). Closing.",
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status_code, reason);
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tor_free(reason);
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connection_mark_for_close(conn);
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return -1;
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}
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@ -490,17 +490,21 @@ parse_http_url(char *headers, char **url)
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/** Parse an HTTP response string <b>headers</b> of the form
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* "HTTP/1.\%d \%d\%s\r\n...".
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* If it's well-formed, assign *<b>code</b> and return 0.
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* If <b>date</b> is provided, set *date to the Date header in the
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* http headers, or 0 if no such header is found. If <b>compression</b>
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* is provided, set *<b>compression</b> to the compression method given
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* in the Content-Encoding header, or 0 if no such header is found, or -1
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* if the value of the header is not recognized.
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* Otherwise, return -1.
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*
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* If it's well-formed, assign the status code to *<b>code</b> and
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* return 0. Otherwise, return -1.
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*
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* On success: If <b>date</b> is provided, set *date to the Date
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* header in the http headers, or 0 if no such header is found. If
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* <b>compression</b> is provided, set *<b>compression</b> to the
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* compression method given in the Content-Encoding header, or 0 if no
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* such header is found, or -1 if the value of the header is not
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* recognized. If <b>reason</b> is provided, strdup the reason string
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* into it.
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*/
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int
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parse_http_response(const char *headers, int *code, time_t *date,
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int *compression)
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int *compression, char **reason)
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{
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int n1, n2;
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char datestr[RFC1123_TIME_LEN+1];
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@ -521,6 +525,20 @@ parse_http_response(const char *headers, int *code, time_t *date,
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parsed_headers = smartlist_create();
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smartlist_split_string(parsed_headers, headers, "\n",
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SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, -1);
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if (reason) {
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smartlist_t *status_line_elements = smartlist_create();
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tor_assert(smartlist_len(parsed_headers));
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smartlist_split_string(status_line_elements,
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smartlist_get(parsed_headers, 0),
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" ", SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 3);
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tor_assert(smartlist_len(status_line_elements) <= 3);
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if (smartlist_len(status_line_elements) == 3) {
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*reason = smartlist_get(status_line_elements, 2);
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smartlist_set(status_line_elements, 2, NULL); /* Prevent free */
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}
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SMARTLIST_FOREACH(status_line_elements, char *, cp, tor_free(cp));
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smartlist_free(status_line_elements);
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}
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if (date) {
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*date = 0;
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SMARTLIST_FOREACH(parsed_headers, const char *, s,
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@ -594,6 +612,7 @@ connection_dir_client_reached_eof(connection_t *conn)
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{
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char *body;
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char *headers;
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char *reason = NULL;
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size_t body_len=0;
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int status_code;
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time_t now, date_header=0;
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@ -615,11 +634,17 @@ connection_dir_client_reached_eof(connection_t *conn)
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}
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if (parse_http_response(headers, &status_code, &date_header,
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&compression) < 0) {
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&compression, &reason) < 0) {
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log_fn(LOG_WARN,"Unparseable headers (server '%s'). Closing.", conn->address);
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tor_free(body); tor_free(headers);
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return -1;
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}
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if (!reason) reason = tor_strdup("[no reason given]");
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log_fn(LOG_DEBUG,
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"Received response from directory servers '%s': %d \"%s\"",
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conn->address, status_code, reason);
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if (date_header > 0) {
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now = time(NULL);
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delta = now-date_header;
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@ -677,7 +702,7 @@ connection_dir_client_reached_eof(connection_t *conn)
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* we didn't manage to uncompress it, then warn and bail. */
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if (!plausible && !new_body) {
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log_fn(LOG_WARN, "Unable to decompress HTTP body (server '%s').", conn->address);
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tor_free(body); tor_free(headers);
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tor_free(body); tor_free(headers); tor_free(reason);
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return -1;
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}
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if (new_body) {
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@ -692,14 +717,15 @@ connection_dir_client_reached_eof(connection_t *conn)
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log_fn(LOG_INFO,"Received directory (size %d) from server '%s'",
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(int)body_len, conn->address);
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if (status_code == 503 || body_len == 0) {
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log_fn(LOG_INFO,"Empty directory. Ignoring.");
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tor_free(body); tor_free(headers);
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log_fn(LOG_INFO,"Empty directory; status %d (\"%s\") Ignoring.",
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status_code, reason);
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tor_free(body); tor_free(headers); tor_free(reason);
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return 0;
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}
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if (status_code != 200) {
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log_fn(LOG_WARN,"Received http status code %d from server '%s'. Failing.",
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status_code, conn->address);
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tor_free(body); tor_free(headers);
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log_fn(LOG_WARN,"Received http status code %d (\"%s\") from server '%s'. Failing.",
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status_code, reason, conn->address);
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tor_free(body); tor_free(headers); tor_free(reason);
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return -1;
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}
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if (router_load_routerlist_from_directory(body, NULL, !skewed, 0) < 0) {
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@ -717,14 +743,14 @@ connection_dir_client_reached_eof(connection_t *conn)
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/* just update our list of running routers, if this list is new info */
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log_fn(LOG_INFO,"Received running-routers list (size %d)", (int)body_len);
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if (status_code != 200) {
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log_fn(LOG_WARN,"Received http status code %d from server '%s'. Failing.",
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status_code, conn->address);
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tor_free(body); tor_free(headers);
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log_fn(LOG_WARN,"Received http status code %d (\"%s\") from server '%s'. Failing.",
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status_code, reason, conn->address);
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tor_free(body); tor_free(headers); tor_free(reason);
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return -1;
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}
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if (!(rrs = router_parse_runningrouters(body, 1))) {
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log_fn(LOG_WARN, "Can't parse runningrouters list (server '%s')", conn->address);
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tor_free(body); tor_free(headers);
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tor_free(body); tor_free(headers); tor_free(reason);
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return -1;
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}
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router_get_routerlist(&rl);
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@ -741,20 +767,20 @@ connection_dir_client_reached_eof(connection_t *conn)
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log_fn(LOG_INFO,"eof (status 200) after uploading server descriptor: finished.");
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break;
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case 400:
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log_fn(LOG_WARN,"http status 400 (bad request) response from dirserver '%s'. Malformed server descriptor?", conn->address);
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log_fn(LOG_WARN,"http status 400 (\"%s\") response from dirserver '%s'. Malformed server descriptor?", reason, conn->address);
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break;
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case 403:
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log_fn(LOG_WARN,"http status 403 (unapproved server) response from dirserver '%s'. Is your clock skewed? Have you mailed us your key fingerprint? Are you using the right key? Are you using a private IP address? See http://tor.eff.org/doc/tor-doc.html#server.", conn->address);
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log_fn(LOG_WARN,"http status 403 (\"%s\") response from dirserver '%s'. Is your clock skewed? Have you mailed us your key fingerprint? Are you using the right key? Are you using a private IP address? See http://tor.eff.org/doc/tor-doc.html#server.", reason, conn->address);
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break;
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default:
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log_fn(LOG_WARN,"http status %d response unrecognized (server '%s').", status_code, conn->address);
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log_fn(LOG_WARN,"http status %d (\"%s\") reason unexpected (server '%s').", status_code, reason, conn->address);
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break;
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}
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}
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if (conn->purpose == DIR_PURPOSE_FETCH_RENDDESC) {
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log_fn(LOG_INFO,"Received rendezvous descriptor (size %d, status code %d)",
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(int)body_len, status_code);
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log_fn(LOG_INFO,"Received rendezvous descriptor (size %d, status %d (\"%s\"))",
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(int)body_len, status_code, reason);
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switch (status_code) {
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case 200:
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if (rend_cache_store(body, body_len) < 0) {
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@ -772,7 +798,10 @@ connection_dir_client_reached_eof(connection_t *conn)
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* connection_mark_for_close cleans it up. */
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break;
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case 400:
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log_fn(LOG_WARN,"http status 400 (bad request). Dirserver didn't like our rendezvous query?");
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log_fn(LOG_WARN,"http status 400 (\"%s\"). Dirserver didn't like our rendezvous query?", reason);
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break;
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default:
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log_fn(LOG_WARN,"http status %d (\"%s\") response unexpected (server '%s').", status_code, reason, conn->address);
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break;
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}
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}
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@ -780,17 +809,17 @@ connection_dir_client_reached_eof(connection_t *conn)
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if (conn->purpose == DIR_PURPOSE_UPLOAD_RENDDESC) {
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switch (status_code) {
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case 200:
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log_fn(LOG_INFO,"eof (status 200) after uploading rendezvous descriptor: finished.");
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log_fn(LOG_INFO,"Uploading rendezvous descriptor: finished with status 200 (\"%s\")", reason);
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break;
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case 400:
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log_fn(LOG_WARN,"http status 400 (bad request) response from dirserver. Malformed rendezvous descriptor?");
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log_fn(LOG_WARN,"http status 400 (\"%s\") response from dirserver. Malformed rendezvous descriptor?", reason);
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break;
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default:
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log_fn(LOG_WARN,"http status %d response unrecognized.", status_code);
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log_fn(LOG_WARN,"http status %d (\"%s\") response unexpected (server '%s').", status_code, reason, conn->address);
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break;
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}
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}
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tor_free(body); tor_free(headers);
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tor_free(body); tor_free(headers); tor_free(reason);
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return 0;
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}
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@ -1434,7 +1434,7 @@ void directory_initiate_command_router(routerinfo_t *router, uint8_t purpose,
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const char *payload, size_t payload_len);
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int parse_http_response(const char *headers, int *code, time_t *date,
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int *compression);
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int *compression, char **response);
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int connection_dir_reached_eof(connection_t *conn);
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int connection_dir_process_inbuf(connection_t *conn);
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