From d4c8384b856220f0953830ac1966134abe042343 Mon Sep 17 00:00:00 2001
From: Daniel O'Connell <doconn1701@gmail.com>
Date: Sun, 3 Aug 2014 12:40:10 +0100
Subject: [PATCH] ws_ssl example
---
examples/ws_ssl/Makefile | 17 ++++
examples/ws_ssl/certs/ws1_ca.pem | 49 +++++++++
examples/ws_ssl/certs/ws1_client.pem | 45 +++++++++
examples/ws_ssl/certs/ws1_server.pem | 45 +++++++++
examples/ws_ssl/certs/ws2_ca.pem | 49 +++++++++
examples/ws_ssl/certs/ws2_client.pem | 45 +++++++++
examples/ws_ssl/certs/ws2_server.pem | 45 +++++++++
examples/ws_ssl/ws_ssl.c | 145 +++++++++++++++++++++++++++
examples/ws_ssl/ws_ssl.html | 48 +++++++++
9 files changed, 488 insertions(+)
create mode 100644 examples/ws_ssl/Makefile
create mode 100644 examples/ws_ssl/certs/ws1_ca.pem
create mode 100644 examples/ws_ssl/certs/ws1_client.pem
create mode 100644 examples/ws_ssl/certs/ws1_server.pem
create mode 100644 examples/ws_ssl/certs/ws2_ca.pem
create mode 100644 examples/ws_ssl/certs/ws2_client.pem
create mode 100644 examples/ws_ssl/certs/ws2_server.pem
create mode 100644 examples/ws_ssl/ws_ssl.c
create mode 100644 examples/ws_ssl/ws_ssl.html
diff --git a/examples/ws_ssl/Makefile b/examples/ws_ssl/Makefile
new file mode 100644
index 000000000..184b4db8c
--- /dev/null
+++ b/examples/ws_ssl/Makefile
@@ -0,0 +1,17 @@
+# Copyright (c) 2014 Cesanta Software
+# All rights reserved
+
+CFLAGS = -W -Wall -I../.. -g -O0 $(CFLAGS_EXTRA)
+NS = ../../../net_skeleton
+SW = ../../../ssl_wrapper
+
+SOURCES = ws_ssl.c ../../mongoose.c $(NS)/net_skeleton.c $(SW)/ssl_wrapper.c
+PROG = ws_ssl
+
+unix: $(SOURCES)
+ $(CC) -o $(PROG) $(SOURCES) \
+ -I$(NS) -DNS_ENABLE_SSL -DNOEMBED_NET_SKELETON \
+ -I$(SW) -DSSL_WRAPPER_USE_AS_LIBRARY -lssl $(CFLAGS)
+
+clean:
+ rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib
diff --git a/examples/ws_ssl/certs/ws1_ca.pem b/examples/ws_ssl/certs/ws1_ca.pem
new file mode 100644
index 000000000..ebc7d8fd5
--- /dev/null
+++ b/examples/ws_ssl/certs/ws1_ca.pem
@@ -0,0 +1,49 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEowIBAAKCAQEAwizPnrCx+/kPSdEeSJFLDXrBH+cSQsSLrCm99G1hCjzqSlIk
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+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+ZpIpwqRCysg=
+-----END CERTIFICATE-----
diff --git a/examples/ws_ssl/certs/ws1_client.pem b/examples/ws_ssl/certs/ws1_client.pem
new file mode 100644
index 000000000..82e99504c
--- /dev/null
+++ b/examples/ws_ssl/certs/ws1_client.pem
@@ -0,0 +1,45 @@
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/examples/ws_ssl/certs/ws1_server.pem b/examples/ws_ssl/certs/ws1_server.pem
new file mode 100644
index 000000000..93ef657ec
--- /dev/null
+++ b/examples/ws_ssl/certs/ws1_server.pem
@@ -0,0 +1,45 @@
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/examples/ws_ssl/certs/ws2_ca.pem b/examples/ws_ssl/certs/ws2_ca.pem
new file mode 100644
index 000000000..9345a94a6
--- /dev/null
+++ b/examples/ws_ssl/certs/ws2_ca.pem
@@ -0,0 +1,49 @@
+-----BEGIN RSA PRIVATE KEY-----
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+y+ArVlh9d2oWN5cBEzRddnWnKJuMi70kMzYf6dIW9s/dHbq/gFDy
+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
+MIIDlDCCAnygAwIBAgIJAJDtcXU2wiJIMA0GCSqGSIb3DQEBBQUAMDoxDDAKBgNV
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+HUaOcNC90ew=
+-----END CERTIFICATE-----
diff --git a/examples/ws_ssl/certs/ws2_client.pem b/examples/ws_ssl/certs/ws2_client.pem
new file mode 100644
index 000000000..8021de3c8
--- /dev/null
+++ b/examples/ws_ssl/certs/ws2_client.pem
@@ -0,0 +1,45 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEpAIBAAKCAQEA0ucemqFwBFziVOgTgx4mZII4WnGDpA/rWAGHvUZOqy2dQ3Pz
+woGKxBaVPAl5kxEosROVGa7dTuq5yFZ4XIGvwCKxF30vCmdGCytqq6MMp904jG32
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+OuVLkqpZzWuye/QCH5NOTfw27ye8jG8VcQW2QPbcbkLXLM7zg2yX7g==
+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
+MIIC7DCCAdQCBRQHBXNJMA0GCSqGSIb3DQEBBQUAMDoxDDAKBgNVBAMTA3dzMjEM
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+XijwHT/o8E9ddH2BvDv+6Nhno9C6/MbezEOIs4nlhRk=
+-----END CERTIFICATE-----
diff --git a/examples/ws_ssl/certs/ws2_server.pem b/examples/ws_ssl/certs/ws2_server.pem
new file mode 100644
index 000000000..b6b48ef23
--- /dev/null
+++ b/examples/ws_ssl/certs/ws2_server.pem
@@ -0,0 +1,45 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEpQIBAAKCAQEA29iFnMf4pjty6knOt4wT0joPUlU2dGCFWxQ5Eg77Yx3Lou2a
+FOzNGp7zLYH8gauOK+mgY+B9cBv8PvVtUQQKB0SKTTV8ZNKVyP3O5F2gRSJ+tHtT
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+iBpIHIBASNCN3sqeq+VqXvavRmeZh5O0vyLP46/kxZx0rzR/NCi9xxU=
+-----END RSA PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
+MIIC7DCCAdQCBRQHBXNIMA0GCSqGSIb3DQEBBQUAMDoxDDAKBgNVBAMTA3dzMjEM
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+iZtzp+NzzLnEnWMNs+fJpPJ96P0kbq2bQzuSBcUynq0=
+-----END CERTIFICATE-----
diff --git a/examples/ws_ssl/ws_ssl.c b/examples/ws_ssl/ws_ssl.c
new file mode 100644
index 000000000..4c6f68838
--- /dev/null
+++ b/examples/ws_ssl/ws_ssl.c
@@ -0,0 +1,145 @@
+// Copyright (c) 2014 Cesanta Software
+// All rights reserved
+//
+// This example demostrates proxying of WebSocket traffic, regardless of the
+// protocol (ws:// or wss://).
+// To use this example:
+// 1. configure your browser to use a proxy on port 2014
+// 2. import certs/ws1_ca.pem and certs/ws2_ca.pem into the trusted
+// certificates list on your browser
+// 3. make && ./ws_ssl
+// 4. Point your browser to http://ws_ssl.com
+// A page with 4 sections should appear, showing websocket echoes
+
+#include "net_skeleton.h"
+#include "mongoose.h"
+#include "ssl_wrapper.h"
+
+struct config {
+ const char *requested_host; // Host name that client uses
+ struct ssl_wrapper_config c;
+};
+
+static struct config s_wrappers[] = {
+ {"ws1", {"127.0.0.1", 9001, 0, NULL, "7001", NULL}},
+ {"ws1", {"127.0.0.1", 9001, 0, NULL, "7002", "certs/ws1_server.pem"}},
+ {"ws2", {"127.0.0.1", 9002, 1, NULL, "7003", NULL}},
+ {"ws2", {"127.0.0.1", 9002, 1, NULL, "7004", "certs/ws2_server.pem"}}
+};
+static int s_received_signal = 0;
+
+static void signal_handler(int sig_num) {
+ signal(sig_num, signal_handler);
+ s_received_signal = sig_num;
+}
+
+static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
+ switch (ev) {
+ case MG_AUTH:
+ return MG_TRUE;
+
+ case MG_REQUEST:
+ printf("==> [%s] [%s]\n", conn->request_method, conn->uri);
+ if (strcmp(conn->request_method, "CONNECT") == 0) {
+ char host[1025] = "";
+ int i, is_ssl, port = 0;
+
+ sscanf(conn->uri, "%1024[^:]:%d", host, &port);
+ is_ssl = (port == 443 ? 1 : 0);
+
+ // Iterate over existing wrapper, see if we can use one of them
+ for (i = 0; i < (int) ARRAY_SIZE(s_wrappers); i++) {
+ if (strcmp(host, s_wrappers[i].requested_host) == 0 &&
+ is_ssl == (s_wrappers[i].c.ssl_cert == NULL ? 0 : 1)) {
+ // Found usable wrapper, tunnel to it.
+ mg_forward(conn, "127.0.0.1",
+ atoi(s_wrappers[i].c.listening_port), 0);
+ return MG_MORE;
+ }
+ }
+
+ // No suitable wrappers found. Disallow that CONNECT request.
+ mg_send_status(conn, 405);
+ return MG_TRUE;
+ }
+
+ // Not a CONNECT request, serve HTML file.
+ mg_send_file(conn, "ws_ssl.html");
+ return MG_MORE;
+
+ default:
+ return MG_FALSE;
+ }
+}
+
+static int ws_handler(struct mg_connection *conn, enum mg_event ev) {
+ switch (ev) {
+ case MG_AUTH:
+ return MG_TRUE;
+ case MG_REQUEST:
+ if (conn->is_websocket) {
+ // Simple websocket echo server
+ mg_websocket_write(conn, WEBSOCKET_OPCODE_TEXT,
+ conn->content, conn->content_len);
+ } else {
+ mg_printf_data(conn, "%s", "websocket connection expected");
+ }
+ return MG_TRUE;
+ default:
+ return MG_FALSE;
+ }
+}
+
+static void *serve_thread_func(void *param) {
+ struct mg_server *server = (struct mg_server *) param;
+ printf("Listening on port %s\n", mg_get_option(server, "listening_port"));
+ while (s_received_signal == 0) {
+ mg_poll_server(server, 1000);
+ }
+ mg_destroy_server(&server);
+ return NULL;
+}
+
+static void *wrapper_thread_func(void *param) {
+ ssl_wrapper_serve(&((struct config *) param)->c, &s_received_signal);
+ return NULL;
+}
+
+int main(void) {
+ struct mg_server *proxy_server = mg_create_server(NULL, ev_handler);
+ struct mg_server *ws1_server = mg_create_server(NULL, ws_handler);
+ struct mg_server *ws2_server = mg_create_server(NULL, ws_handler);
+ size_t i;
+
+ // Configure proxy server to listen on port 2014
+ mg_set_option(proxy_server, "listening_port", "2014");
+ //mg_set_option(proxy_server, "enable_proxy", "yes");
+
+ // Configure two websocket echo servers:
+ // ws1 is WS, listening on 9001
+ // ws2 is WSS, listening on 9002
+ // Note that HTML page thinks that ws1 is WSS, and ws2 is WS,
+ // where in reality it is vice versa and proxy server makes the decision.
+ mg_set_option(ws1_server, "listening_port", "9001");
+ mg_set_option(ws2_server, "listening_port", "9002");
+ mg_set_option(ws2_server, "ssl_certificate", "certs/ws2_server.pem");
+
+ // Setup signal handlers
+ signal(SIGTERM, signal_handler);
+ signal(SIGINT, signal_handler);
+
+ // Start SSL wrappers, each in it's own thread
+ for (i = 0; i < ARRAY_SIZE(s_wrappers); i++) {
+ ns_start_thread(wrapper_thread_func, &s_wrappers[i]);
+ }
+
+ // Start websocket servers in separate threads
+ mg_start_thread(serve_thread_func, ws1_server);
+ mg_start_thread(serve_thread_func, ws2_server);
+
+ // Finally, start proxy server in this thread: this call blocks
+ serve_thread_func(proxy_server);
+
+ printf("Existing on signal %d\n", s_received_signal);
+ return EXIT_SUCCESS;
+}
diff --git a/examples/ws_ssl/ws_ssl.html b/examples/ws_ssl/ws_ssl.html
new file mode 100644
index 000000000..5f8fc1b55
--- /dev/null
+++ b/examples/ws_ssl/ws_ssl.html
@@ -0,0 +1,48 @@
+<html>
+<head>
+ <title>Websocket Proxy SSL Test</title>
+ <meta charset="utf-8">
+ <script>
+ window.onload = function() {
+ var protocols = ['ws://', 'wss://'];
+ var websocketServers = ['ws1', 'ws2'];
+
+ var createWebsocketConnection = function(proto, server) {
+ var conn = new WebSocket(proto + server);
+
+ var div = document.createElement('div');
+ var h2 = document.createElement('h2');
+ h2.innerHTML = 'Connection to ' + proto + server;
+ document.body.appendChild(h2);
+ document.body.appendChild(div);
+
+ conn.onmessage = function(ev) {
+ var el = document.createElement('div');
+ el.innerHTML = 'websocket message: ' + ev.data;
+ div.appendChild(el);
+ // Keep only last 5 messages in the list
+ while (div.childNodes.length > 5) div.removeChild(div.firstChild);
+ };
+
+ // Send some string to the websocket connection periodically.
+ // websocket server much echo it back.
+ window.setInterval(function() { conn.send(Math.random()); }, 1000);
+ };
+
+ for (var i = 0; i < protocols.length; i++) {
+ for (var j = 0; j < websocketServers.length; j++) {
+ createWebsocketConnection(protocols[i], websocketServers[j]);
+ }
+ }
+ };
+ </script>
+ <style>
+ body > div {
+ border: 1px solid #ccc; background: #f0f0f0; padding: 0 1em;
+ margin: 0 2em; min-height: 4em; max-width: 40em;
+ }
+ </style>
+</head>
+<body>
+</body>
+</html>
\ No newline at end of file
--
GitLab