1 /*
2 * lws-minimal-secure-streams
3 *
4 * Written in 2010-2020 by Andy Green <andy@warmcat.com>
5 *
6 * This file is made available under the Creative Commons CC0 1.0
7 * Universal Public Domain Dedication.
8 *
9 *
10 * This demonstrates a minimal http client using secure streams api.
11 *
12 * It visits https://warmcat.com/ and receives the html page there.
13 *
14 * This example is built two different ways from the same source... one includes
15 * the policy everything needed to fulfil the stream directly. The other -client
16 * variant has no policy itself and some other minor init changes, and connects
17 * to the -proxy example to actually get the connection done.
18 *
19 * In the -client build case, the example does not even init the tls libraries
20 * since the proxy part will take care of all that.
21 */
22
23 #include <libwebsockets.h>
24 #include <string.h>
25 #include <signal.h>
26
27 /*
28 * uncomment to force network traffic through 127.0.0.1:1080
29 *
30 * On your local machine, you can run a SOCKS5 proxy like this
31 *
32 * $ ssh -N -D 0.0.0.0:1080 localhost -v
33 *
34 * If enabled, this also fetches a remote policy that also
35 * specifies that all traffic should go through the remote
36 * proxy.
37 */
38 // #define VIA_LOCALHOST_SOCKS
39
40 static int interrupted, bad = 1;
41 static lws_state_notify_link_t nl;
42
43 /*
44 * If the -proxy app is fulfilling our connection, then we don't need to have
45 * the policy in the client.
46 *
47 * When we build with LWS_SS_USE_SSPC, the apis hook up to a proxy process over
48 * a Unix Domain Socket. To test that, you need to separately run the
49 * ./lws-minimal-secure-streams-proxy test app on the same machine.
50 */
51
52 #if !defined(LWS_SS_USE_SSPC)
53 static const char * const default_ss_policy =
54 "{"
55 "\"release\":" "\"01234567\","
56 "\"product\":" "\"myproduct\","
57 "\"schema-version\":" "1,"
58 #if defined(VIA_LOCALHOST_SOCKS)
59 "\"via-socks5\":" "\"127.0.0.1:1080\","
60 #endif
61
62 "\"retry\": [" /* named backoff / retry strategies */
63 "{\"default\": {"
64 "\"backoff\": [" "1000,"
65 "2000,"
66 "3000,"
67 "5000,"
68 "10000"
69 "],"
70 "\"conceal\":" "5,"
71 "\"jitterpc\":" "20,"
72 "\"svalidping\":" "30,"
73 "\"svalidhup\":" "35"
74 "}}"
75 "],"
76 "\"certs\": [" /* named individual certificates in BASE64 DER */
77 /*
78 * Let's Encrypt certs for warmcat.com / libwebsockets.org
79 *
80 * We fetch the real policy from there using SS and switch to
81 * using that.
82 */
83 "{\"isrg_root_x1\": \"" /* ISRG ROOT X1 */
84 "MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAw"
85 "TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh"
86 "cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTUwNjA0MTEwNDM4"
87 "WhcNMzUwNjA0MTEwNDM4WjBPMQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJu"
88 "ZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBY"
89 "MTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAK3oJHP0FDfzm54rVygc"
90 "h77ct984kIxuPOZXoHj3dcKi/vVqbvYATyjb3miGbESTtrFj/RQSa78f0uoxmyF+"
91 "0TM8ukj13Xnfs7j/EvEhmkvBioZxaUpmZmyPfjxwv60pIgbz5MDmgK7iS4+3mX6U"
92 "A5/TR5d8mUgjU+g4rk8Kb4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sW"
93 "T8KOEUt+zwvo/7V3LvSye0rgTBIlDHCNAymg4VMk7BPZ7hm/ELNKjD+Jo2FR3qyH"
94 "B5T0Y3HsLuJvW5iB4YlcNHlsdu87kGJ55tukmi8mxdAQ4Q7e2RCOFvu396j3x+UC"
95 "B5iPNgiV5+I3lg02dZ77DnKxHZu8A/lJBdiB3QW0KtZB6awBdpUKD9jf1b0SHzUv"
96 "KBds0pjBqAlkd25HN7rOrFleaJ1/ctaJxQZBKT5ZPt0m9STJEadao0xAH0ahmbWn"
97 "OlFuhjuefXKnEgV4We0+UXgVCwOPjdAvBbI+e0ocS3MFEvzG6uBQE3xDk3SzynTn"
98 "jh8BCNAw1FtxNrQHusEwMFxIt4I7mKZ9YIqioymCzLq9gwQbooMDQaHWBfEbwrbw"
99 "qHyGO0aoSCqI3Haadr8faqU9GY/rOPNk3sgrDQoo//fb4hVC1CLQJ13hef4Y53CI"
100 "rU7m2Ys6xt0nUW7/vGT1M0NPAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNV"
101 "HRMBAf8EBTADAQH/MB0GA1UdDgQWBBR5tFnme7bl5AFzgAiIyBpY9umbbjANBgkq"
102 "hkiG9w0BAQsFAAOCAgEAVR9YqbyyqFDQDLHYGmkgJykIrGF1XIpu+ILlaS/V9lZL"
103 "ubhzEFnTIZd+50xx+7LSYK05qAvqFyFWhfFQDlnrzuBZ6brJFe+GnY+EgPbk6ZGQ"
104 "3BebYhtF8GaV0nxvwuo77x/Py9auJ/GpsMiu/X1+mvoiBOv/2X/qkSsisRcOj/KK"
105 "NFtY2PwByVS5uCbMiogziUwthDyC3+6WVwW6LLv3xLfHTjuCvjHIInNzktHCgKQ5"
106 "ORAzI4JMPJ+GslWYHb4phowim57iaztXOoJwTdwJx4nLCgdNbOhdjsnvzqvHu7Ur"
107 "TkXWStAmzOVyyghqpZXjFaH3pO3JLF+l+/+sKAIuvtd7u+Nxe5AW0wdeRlN8NwdC"
108 "jNPElpzVmbUq4JUagEiuTDkHzsxHpFKVK7q4+63SM1N95R1NbdWhscdCb+ZAJzVc"
109 "oyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq"
110 "4RgqsahDYVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPA"
111 "mRGunUHBcnWEvgJBQl9nJEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57d"
112 "emyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc="
113 "\"},"
114 "{\"LEX3_isrg_root_x1\": \"" /* LE X3 signed by ISRG X1 root */
115 "MIIFjTCCA3WgAwIBAgIRANOxciY0IzLc9AUoUSrsnGowDQYJKoZIhvcNAQELBQAw"
116 "TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh"
117 "cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTYxMDA2MTU0MzU1"
118 "WhcNMjExMDA2MTU0MzU1WjBKMQswCQYDVQQGEwJVUzEWMBQGA1UEChMNTGV0J3Mg"
119 "RW5jcnlwdDEjMCEGA1UEAxMaTGV0J3MgRW5jcnlwdCBBdXRob3JpdHkgWDMwggEi"
120 "MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCc0wzwWuUuR7dyXTeDs2hjMOrX"
121 "NSYZJeG9vjXxcJIvt7hLQQWrqZ41CFjssSrEaIcLo+N15Obzp2JxunmBYB/XkZqf"
122 "89B4Z3HIaQ6Vkc/+5pnpYDxIzH7KTXcSJJ1HG1rrueweNwAcnKx7pwXqzkrrvUHl"
123 "Npi5y/1tPJZo3yMqQpAMhnRnyH+lmrhSYRQTP2XpgofL2/oOVvaGifOFP5eGr7Dc"
124 "Gu9rDZUWfcQroGWymQQ2dYBrrErzG5BJeC+ilk8qICUpBMZ0wNAxzY8xOJUWuqgz"
125 "uEPxsR/DMH+ieTETPS02+OP88jNquTkxxa/EjQ0dZBYzqvqEKbbUC8DYfcOTAgMB"
126 "AAGjggFnMIIBYzAOBgNVHQ8BAf8EBAMCAYYwEgYDVR0TAQH/BAgwBgEB/wIBADBU"
127 "BgNVHSAETTBLMAgGBmeBDAECATA/BgsrBgEEAYLfEwEBATAwMC4GCCsGAQUFBwIB"
128 "FiJodHRwOi8vY3BzLnJvb3QteDEubGV0c2VuY3J5cHQub3JnMB0GA1UdDgQWBBSo"
129 "SmpjBH3duubRObemRWXv86jsoTAzBgNVHR8ELDAqMCigJqAkhiJodHRwOi8vY3Js"
130 "LnJvb3QteDEubGV0c2VuY3J5cHQub3JnMHIGCCsGAQUFBwEBBGYwZDAwBggrBgEF"
131 "BQcwAYYkaHR0cDovL29jc3Aucm9vdC14MS5sZXRzZW5jcnlwdC5vcmcvMDAGCCsG"
132 "AQUFBzAChiRodHRwOi8vY2VydC5yb290LXgxLmxldHNlbmNyeXB0Lm9yZy8wHwYD"
133 "VR0jBBgwFoAUebRZ5nu25eQBc4AIiMgaWPbpm24wDQYJKoZIhvcNAQELBQADggIB"
134 "ABnPdSA0LTqmRf/Q1eaM2jLonG4bQdEnqOJQ8nCqxOeTRrToEKtwT++36gTSlBGx"
135 "A/5dut82jJQ2jxN8RI8L9QFXrWi4xXnA2EqA10yjHiR6H9cj6MFiOnb5In1eWsRM"
136 "UM2v3e9tNsCAgBukPHAg1lQh07rvFKm/Bz9BCjaxorALINUfZ9DD64j2igLIxle2"
137 "DPxW8dI/F2loHMjXZjqG8RkqZUdoxtID5+90FgsGIfkMpqgRS05f4zPbCEHqCXl1"
138 "eO5HyELTgcVlLXXQDgAWnRzut1hFJeczY1tjQQno6f6s+nMydLN26WuU4s3UYvOu"
139 "OsUxRlJu7TSRHqDC3lSE5XggVkzdaPkuKGQbGpny+01/47hfXXNB7HntWNZ6N2Vw"
140 "p7G6OfY+YQrZwIaQmhrIqJZuigsrbe3W+gdn5ykE9+Ky0VgVUsfxo52mwFYs1JKY"
141 "2PGDuWx8M6DlS6qQkvHaRUo0FMd8TsSlbF0/v965qGFKhSDeQoMpYnwcmQilRh/0"
142 "ayLThlHLN81gSkJjVrPI0Y8xCVPB4twb1PFUd2fPM3sA1tJ83sZ5v8vgFv2yofKR"
143 "PB0t6JzUA81mSqM3kxl5e+IZwhYAyO0OTg3/fs8HqGTNKd9BqoUwSRBzp06JMg5b"
144 "rUCGwbCUDI0mxadJ3Bz4WxR6fyNpBK2yAinWEsikxqEt"
145 "\"}"
146 "],"
147 "\"trust_stores\": [" /* named cert chains */
148 "{"
149 "\"name\": \"le_via_isrg\","
150 "\"stack\": ["
151 "\"isrg_root_x1\","
152 "\"LEX3_isrg_root_x1\""
153 "]"
154 "}"
155 "],"
156 "\"s\": ["
157 "{\"fetch_policy\": {"
158 "\"endpoint\":" "\"warmcat.com\","
159 "\"port\":" "443,"
160 "\"protocol\":" "\"h1\","
161 "\"http_method\":" "\"GET\","
162 #if defined(VIA_LOCALHOST_SOCKS)
163 "\"http_url\":" "\"policy/minimal-proxy-socks.json\","
164 #else
165 "\"http_url\":" "\"policy/minimal-proxy.json\","
166 #endif
167 "\"tls\":" "true,"
168 "\"opportunistic\":" "true,"
169 "\"retry\":" "\"default\","
170 "\"tls_trust_store\":" "\"le_via_isrg\""
171 "}}"
172 "}"
173 ;
174
175 #endif
176
177 typedef struct myss {
178 struct lws_ss_handle *ss;
179 void *opaque_data;
180 /* ... application specific state ... */
181 lws_sorted_usec_list_t sul;
182 } myss_t;
183
184 static const char *canned_root_token_payload =
185 "grant_type=refresh_token"
186 "&refresh_token=Atzr|IwEBIJedGXjDqsU_vMxykqOMg"
187 "SHfYe3CPcedueWEMWSDMaDnEmiW8RlR1Kns7Cb4B-TOSnqp7ifVsY4BMY2B8tpHfO39XP"
188 "zfu9HapGjTR458IyHX44FE71pWJkGZ79uVBpljP4sazJuk8XS3Oe_yLnm_DIO6fU1nU3Y"
189 "0flYmsOiOAQE_gRk_pdlmEtHnpMA-9rLw3mkY5L89Ty9kUygBsiFaYatouROhbsTn8-jW"
190 "k1zZLUDpT6ICtBXSnrCIg0pUbZevPFhTwdXd6eX-u4rq0W-XaDvPWFO7au-iPb4Zk5eZE"
191 "iX6sissYrtNmuEXc2uHu7MnQO1hHCaTdIO2CANVumf-PHSD8xseamyh04sLV5JgFzY45S"
192 "KvKMajiUZuLkMokOx86rjC2Hdkx5DO7G-dbG1ufBDG-N79pFMSs7Ck5pc283IdLoJkCQc"
193 "AGvTX8o8I29QqkcGou-9TKhOJmpX8As94T61ok0UqqEKPJ7RhfQHHYdCtsdwxgvfVr9qI"
194 "xL_hDCcTho8opCVX-6QhJHl6SQFlTw13"
195 "&client_id="
196 "amzn1.application-oa2-client.4823334c434b4190a2b5a42c07938a2d";
197
198 /* secure streams payload interface */
199
200 static int
myss_rx(void * userobj,const uint8_t * buf,size_t len,int flags)201 myss_rx(void *userobj, const uint8_t *buf, size_t len, int flags)
202 {
203 // myss_t *m = (myss_t *)userobj;
204
205 lwsl_user("%s: len %d, flags: %d\n", __func__, (int)len, flags);
206 lwsl_hexdump_info(buf, len);
207
208 /*
209 * If we received the whole message, for our example it means
210 * we are done.
211 */
212 if (flags & LWSSS_FLAG_EOM) {
213 bad = 0;
214 interrupted = 1;
215 }
216
217 return 0;
218 }
219
220 static int
myss_tx(void * userobj,lws_ss_tx_ordinal_t ord,uint8_t * buf,size_t * len,int * flags)221 myss_tx(void *userobj, lws_ss_tx_ordinal_t ord, uint8_t *buf, size_t *len,
222 int *flags)
223 {
224 //myss_t *m = (myss_t *)userobj;
225
226 return 0;
227 }
228
229 static int
myss_state(void * userobj,void * sh,lws_ss_constate_t state,lws_ss_tx_ordinal_t ack)230 myss_state(void *userobj, void *sh, lws_ss_constate_t state,
231 lws_ss_tx_ordinal_t ack)
232 {
233 myss_t *m = (myss_t *)userobj;
234
235 lwsl_user("%s: %s, ord 0x%x\n", __func__, lws_ss_state_name(state),
236 (unsigned int)ack);
237
238 switch (state) {
239 case LWSSSCS_CREATING:
240 lws_ss_set_metadata(m->ss, "uptag", "myuptag123", 10);
241 lws_ss_set_metadata(m->ss, "ctype", "myctype", 7);
242 lws_ss_client_connect(m->ss);
243 break;
244 case LWSSSCS_ALL_RETRIES_FAILED:
245 /* if we're out of retries, we want to close the app and FAIL */
246 interrupted = 1;
247 break;
248 case LWSSSCS_QOS_ACK_REMOTE:
249 lwsl_notice("%s: LWSSSCS_QOS_ACK_REMOTE\n", __func__);
250 break;
251 default:
252 break;
253 }
254
255 return 0;
256 }
257
258 static int
app_system_state_nf(lws_state_manager_t * mgr,lws_state_notify_link_t * link,int current,int target)259 app_system_state_nf(lws_state_manager_t *mgr, lws_state_notify_link_t *link,
260 int current, int target)
261 {
262 struct lws_context *context = lws_system_context_from_system_mgr(mgr);
263 lws_system_blob_t *ab = lws_system_get_blob(context,
264 LWS_SYSBLOB_TYPE_AUTH, 1 /* AUTH_IDX_ROOT */);
265 size_t size;
266
267 /*
268 * For the things we care about, let's notice if we are trying to get
269 * past them when we haven't solved them yet, and make the system
270 * state wait while we trigger the dependent action.
271 */
272 switch (target) {
273 case LWS_SYSTATE_REGISTERED:
274 size = lws_system_blob_get_size(ab);
275 if (size)
276 break;
277
278 /* let's register our canned root token so auth can use it */
279 lws_system_blob_direct_set(ab,
280 (const uint8_t *)canned_root_token_payload,
281 strlen(canned_root_token_payload));
282 break;
283
284 case LWS_SYSTATE_OPERATIONAL:
285 if (current == LWS_SYSTATE_OPERATIONAL) {
286 lws_ss_info_t ssi;
287
288 /* We're making an outgoing secure stream ourselves */
289
290 memset(&ssi, 0, sizeof(ssi));
291 ssi.handle_offset = offsetof(myss_t, ss);
292 ssi.opaque_user_data_offset = offsetof(myss_t,
293 opaque_data);
294 ssi.rx = myss_rx;
295 ssi.tx = myss_tx;
296 ssi.state = myss_state;
297 ssi.user_alloc = sizeof(myss_t);
298 ssi.streamtype = "mintest";
299
300 if (lws_ss_create(context, 0, &ssi, NULL, NULL,
301 NULL, NULL)) {
302 lwsl_err("%s: failed to create secure stream\n",
303 __func__);
304 return -1;
305 }
306 }
307 break;
308 }
309
310 return 0;
311 }
312
313 static lws_state_notify_link_t * const app_notifier_list[] = {
314 &nl, NULL
315 };
316
317 static void
sigint_handler(int sig)318 sigint_handler(int sig)
319 {
320 interrupted = 1;
321 }
322
main(int argc,const char ** argv)323 int main(int argc, const char **argv)
324 {
325 struct lws_context_creation_info info;
326 struct lws_context *context;
327 int n = 0;
328
329 signal(SIGINT, sigint_handler);
330
331 memset(&info, 0, sizeof info);
332 lws_cmdline_option_handle_builtin(argc, argv, &info);
333
334 lwsl_user("LWS secure streams test client [-d<verb>]\n");
335
336 info.fd_limit_per_thread = 1 + 6 + 1;
337 info.port = CONTEXT_PORT_NO_LISTEN;
338 #if defined(LWS_SS_USE_SSPC)
339 info.protocols = lws_sspc_protocols;
340 {
341 const char *p;
342
343 /* connect to ssproxy via UDS by default, else via
344 * tcp connection to this port */
345 if ((p = lws_cmdline_option(argc, argv, "-p")))
346 info.ss_proxy_port = atoi(p);
347
348 /* UDS "proxy.ss.lws" in abstract namespace, else this socket
349 * path; when -p given this can specify the network interface
350 * to bind to */
351 if ((p = lws_cmdline_option(argc, argv, "-i")))
352 info.ss_proxy_bind = p;
353
354 /* if -p given, -a specifies the proxy address to connect to */
355 if ((p = lws_cmdline_option(argc, argv, "-a")))
356 info.ss_proxy_address = p;
357 }
358 #else
359 info.pss_policies_json = default_ss_policy;
360 info.options = LWS_SERVER_OPTION_EXPLICIT_VHOSTS |
361 LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
362 #endif
363 #if defined(LWS_WITH_DETAILED_LATENCY)
364 info.detailed_latency_cb = lws_det_lat_plot_cb;
365 info.detailed_latency_filepath = "/tmp/lws-latency-ssproxy";
366 #endif
367
368 /* integrate us with lws system state management when context created */
369
370 nl.name = "app";
371 nl.notify_cb = app_system_state_nf;
372 info.register_notifier_list = app_notifier_list;
373
374 /* create the context */
375
376 context = lws_create_context(&info);
377 if (!context) {
378 lwsl_err("lws init failed\n");
379 return 1;
380 }
381
382 /*
383 * Set the related lws_system blobs
384 *
385 * ...direct_set() sets a pointer, so the thing pointed to has to have
386 * a suitable lifetime, eg, something that already exists on the heap or
387 * a const string in .rodata like this
388 */
389
390 lws_system_blob_direct_set(lws_system_get_blob(context,
391 LWS_SYSBLOB_TYPE_DEVICE_SERIAL, 0),
392 (const uint8_t *)"SN12345678", 10);
393 lws_system_blob_direct_set(lws_system_get_blob(context,
394 LWS_SYSBLOB_TYPE_DEVICE_FW_VERSION, 0),
395 (const uint8_t *)"v0.01", 5);
396
397 /*
398 * ..._heap_append() appends to a buflist kind of arrangement on heap,
399 * just one block is fine, otherwise it will concatenate the fragments
400 * in the order they were appended (and take care of freeing them at
401 * context destroy time). ..._heap_empty() is also available to remove
402 * everything that was already allocated.
403 *
404 * Here we use _heap_append() just so it's tested as well as direct set.
405 */
406
407 lws_system_blob_heap_append(lws_system_get_blob(context,
408 LWS_SYSBLOB_TYPE_DEVICE_TYPE, 0),
409 (const uint8_t *)"spacerocket", 11);
410
411 /* the event loop */
412
413 while (n >= 0 && !interrupted)
414 n = lws_service(context, 0);
415
416 lws_context_destroy(context);
417
418 lwsl_user("Completed: %s\n", bad ? "failed" : "OK");
419
420 return bad;
421 }
422