[tor/master] connection_edge: Return a web page when HTTPTunnelPort is misconfigured
commit 728d20ed08122d2f34b001217faa009040fb2fee Author: teor <teor@torproject.org> Date: Wed Apr 17 17:58:40 2019 +1000 connection_edge: Return a web page when HTTPTunnelPort is misconfigured Return an informative web page when the HTTPTunnelPort is used as an HTTP proxy. Closes ticket 27821, patch by "eighthave". --- changes/ticket27821 | 3 +++ src/core/or/connection_edge.c | 27 ++++++++++++++++++++++++++- 2 files changed, 29 insertions(+), 1 deletion(-) diff --git a/changes/ticket27821 b/changes/ticket27821 new file mode 100644 index 000000000..158f308fb --- /dev/null +++ b/changes/ticket27821 @@ -0,0 +1,3 @@ + o Minor features (HTTP tunnel): + - Return an informative web page when the HTTPTunnelPort is used as an + HTTP proxy. Closes ticket 27821, patch by "eighthave". diff --git a/src/core/or/connection_edge.c b/src/core/or/connection_edge.c index 071a8c91e..4f7cbafe0 100644 --- a/src/core/or/connection_edge.c +++ b/src/core/or/connection_edge.c @@ -2810,6 +2810,31 @@ connection_ap_process_natd(entry_connection_t *conn) return connection_ap_rewrite_and_attach_if_allowed(conn, NULL, NULL); } +static const char HTTP_CONNECT_IS_NOT_AN_HTTP_PROXY_MSG[] = + "HTTP/1.0 405 Method Not Allowed\r\n"; + "Content-Type: text/html; charset=iso-8859-1\r\n\r\n" + "<html>\n" + "<head>\n" + "<title>This is an HTTP CONNECT tunnel, not an full HTTP Proxy</title>\n" + "</head>\n" + "<body>\n" + "<h1>This is an HTTP CONNECT tunnel, not an HTTP proxy.</h1>\n" + "<p>\n" + "It appears you have configured your web browser to use this Tor port as\n" + "an HTTP proxy.\n" + "</p><p>\n" + "This is not correct: This port is configured as a CONNECT tunnel, not\n" + "an HTTP proxy. Please configure your client accordingly. You can also\n" + "use HTTPS, then the client should automatically use HTTP CONNECT." + "</p>\n" + "<p>\n" + "See <a href=\"https://www.torproject.org/documentation.html\">" + "https://www.torproject.org/documentation.html</a> for more " + "information.\n" + "</p>\n" + "</body>\n" + "</html>\n"; + /** Called on an HTTP CONNECT entry connection when some bytes have arrived, * but we have not yet received a full HTTP CONNECT request. Try to parse an * HTTP CONNECT request from the connection's inbuf. On success, set up the @@ -2850,7 +2875,7 @@ connection_ap_process_http_connect(entry_connection_t *conn) tor_assert(command); tor_assert(addrport); if (strcasecmp(command, "connect")) { - errmsg = "HTTP/1.0 405 Method Not Allowed\r\n\r\n"; + errmsg = HTTP_CONNECT_IS_NOT_AN_HTTP_PROXY_MSG; goto err; }
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