mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-24 20:33:31 +01:00
check [X-]Forwarded-For headers in HTTP requests when generating log messages. Implements feature for bug 181. Arma--please review?
svn:r4826
This commit is contained in:
parent
50452c32ec
commit
b72ab23ded
@ -49,6 +49,8 @@ directory_send_command(connection_t *conn, const char *platform,
|
||||
static int directory_handle_command(connection_t *conn);
|
||||
static int body_is_plausible(const char *body, size_t body_len, int purpose);
|
||||
static int purpose_is_private(uint8_t purpose);
|
||||
static char *http_get_header(const char *headers, const char *which);
|
||||
static char *http_get_origin(const char *headers, connection_t *conn);
|
||||
|
||||
/********* START VARIABLES **********/
|
||||
|
||||
@ -508,6 +510,56 @@ parse_http_url(char *headers, char **url)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/** Return a copy of the first HTTP header in <b>headers</b> whose key is
|
||||
* <b>which</b>. The key should be given with a terminating colon and space;
|
||||
* this function copies everything after, up to but not including the
|
||||
* following newline. */
|
||||
static char *
|
||||
http_get_header(const char *headers, const char *which)
|
||||
{
|
||||
const char *cp = headers;
|
||||
while (cp) {
|
||||
if (!strcmpstart(cp, which)) {
|
||||
char *eos;
|
||||
cp += strlen(which);
|
||||
if ((eos = strchr(cp,'\n')))
|
||||
return tor_strndup(cp, eos-cp);
|
||||
else
|
||||
return tor_strdup(cp);
|
||||
}
|
||||
cp = strchr(headers, '\n');
|
||||
if (cp)
|
||||
++cp;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/** Allocate and return a string describing the source of an HTTP request with
|
||||
* headers <b>headers</b> received on <b>conn</b>. The format is either
|
||||
* "'1.2.3.4'", or "'1.2.3.4' (forwarded for '5.6.7.8')".
|
||||
*/
|
||||
static char *
|
||||
http_get_origin(const char *headers, connection_t *conn)
|
||||
{
|
||||
char *fwd;
|
||||
|
||||
fwd = http_get_header(headers, "Forwarded-For: ");
|
||||
if (!fwd)
|
||||
fwd = http_get_header(headers, "X-Forwarded-For: ");
|
||||
if (fwd) {
|
||||
size_t len = strlen(fwd)+strlen(conn->address)+32;
|
||||
char *result = tor_malloc(len);
|
||||
tor_snprintf(result, len, "'%s' (forwarded for '%s')", conn->address, fwd);
|
||||
tor_free(fwd);
|
||||
return result;
|
||||
} else {
|
||||
size_t len = strlen(conn->address)+3;
|
||||
char *result = tor_malloc(len);
|
||||
tor_snprintf(result, len, "'%s'", conn->address);
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
/** Parse an HTTP response string <b>headers</b> of the form
|
||||
* \verbatim
|
||||
* "HTTP/1.\%d \%d\%s\r\n...".
|
||||
@ -942,7 +994,7 @@ directory_handle_command_get(connection_t *conn, char *headers,
|
||||
{
|
||||
size_t dlen;
|
||||
const char *cp;
|
||||
char *url;
|
||||
char *url = NULL;
|
||||
char tmp[8192];
|
||||
char date[RFC1123_TIME_LEN+1];
|
||||
|
||||
@ -1060,7 +1112,8 @@ directory_handle_command_post(connection_t *conn, char *headers,
|
||||
char *body, size_t body_len)
|
||||
{
|
||||
const char *cp;
|
||||
char *url;
|
||||
char *origin = NULL;
|
||||
char *url = NULL;
|
||||
|
||||
log_fn(LOG_DEBUG,"Received POST command.");
|
||||
|
||||
@ -1078,6 +1131,7 @@ directory_handle_command_post(connection_t *conn, char *headers,
|
||||
return 0;
|
||||
}
|
||||
log_fn(LOG_INFO,"rewritten url as '%s'.", url);
|
||||
origin = http_get_origin(headers, conn);
|
||||
|
||||
if (!strcmp(url,"/tor/")) { /* server descriptor post */
|
||||
const char *msg;
|
||||
@ -1087,7 +1141,7 @@ directory_handle_command_post(connection_t *conn, char *headers,
|
||||
case -1:
|
||||
/* malformed descriptor, or something wrong */
|
||||
write_http_status_line(conn, 400, msg?msg:"Malformed or unacceptable server descriptor");
|
||||
log_fn(LOG_NOTICE,"Rejected descriptor published by '%s'.", conn->address);
|
||||
log_fn(LOG_NOTICE,"Rejected descriptor published by %s.", origin);
|
||||
break;
|
||||
case 0:
|
||||
/* descriptor was well-formed but server has not been approved */
|
||||
@ -1098,8 +1152,7 @@ directory_handle_command_post(connection_t *conn, char *headers,
|
||||
write_http_status_line(conn, 200, msg?msg:"Verified server descriptor accepted");
|
||||
break;
|
||||
}
|
||||
tor_free(url);
|
||||
return 0;
|
||||
goto done;
|
||||
}
|
||||
|
||||
if (!strcmpstart(url,"/tor/rendezvous/publish")) {
|
||||
@ -1108,14 +1161,17 @@ directory_handle_command_post(connection_t *conn, char *headers,
|
||||
write_http_status_line(conn, 400, "Invalid service descriptor rejected");
|
||||
else
|
||||
write_http_status_line(conn, 200, "Service descriptor stored");
|
||||
tor_free(url);
|
||||
return 0;
|
||||
goto done;
|
||||
}
|
||||
|
||||
/* we didn't recognize the url */
|
||||
write_http_status_line(conn, 404, "Not found");
|
||||
|
||||
done:
|
||||
tor_free(url);
|
||||
tor_free(origin);
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
/** Called when a dirserver receives data on a directory connection;
|
||||
|
Loading…
Reference in New Issue
Block a user