2 c8dba1e6 2021-07-24 op * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
4 c8dba1e6 2021-07-24 op * Permission to use, copy, modify, and distribute this software for any
5 c8dba1e6 2021-07-24 op * purpose with or without fee is hereby granted, provided that the above
6 c8dba1e6 2021-07-24 op * copyright notice and this permission notice appear in all copies.
8 c8dba1e6 2021-07-24 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 c8dba1e6 2021-07-24 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 c8dba1e6 2021-07-24 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 c8dba1e6 2021-07-24 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 c8dba1e6 2021-07-24 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 c8dba1e6 2021-07-24 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 c8dba1e6 2021-07-24 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 c8dba1e6 2021-07-24 op #include "compat.h"
19 c8dba1e6 2021-07-24 op #include <sys/types.h>
20 c8dba1e6 2021-07-24 op #include <sys/socket.h>
22 c8dba1e6 2021-07-24 op #include <netinet/in.h>
24 c8dba1e6 2021-07-24 op #include <assert.h>
25 c8dba1e6 2021-07-24 op #include <ctype.h>
26 c8dba1e6 2021-07-24 op #include <errno.h>
27 c8dba1e6 2021-07-24 op #include <netdb.h>
28 c8dba1e6 2021-07-24 op #include <stdarg.h>
29 c8dba1e6 2021-07-24 op #include <stdio.h>
30 c8dba1e6 2021-07-24 op #include <stdlib.h>
31 c8dba1e6 2021-07-24 op #include <string.h>
32 c8dba1e6 2021-07-24 op #include <tls.h>
33 c8dba1e6 2021-07-24 op #include <unistd.h>
35 c8dba1e6 2021-07-24 op #if HAVE_ASR_RUN
36 c8dba1e6 2021-07-24 op # include <asr.h>
39 c8dba1e6 2021-07-24 op #include "telescope.h"
41 c8dba1e6 2021-07-24 op static struct imsgev *iev_ui;
42 c8dba1e6 2021-07-24 op static struct tls_config *tlsconf;
44 edfe87be 2021-07-24 op /* a pending request */
46 edfe87be 2021-07-24 op struct phos_uri url;
50 edfe87be 2021-07-24 op struct tls *ctx;
51 edfe87be 2021-07-24 op char req[1024];
53 edfe87be 2021-07-24 op int done_header;
54 edfe87be 2021-07-24 op struct bufferevent *bev;
56 edfe87be 2021-07-24 op struct addrinfo *servinfo, *p;
57 edfe87be 2021-07-24 op #if HAVE_ASR_RUN
58 edfe87be 2021-07-24 op struct addrinfo hints;
59 edfe87be 2021-07-24 op struct event_asr *asrev;
62 edfe87be 2021-07-24 op TAILQ_ENTRY(req) reqs;
65 e2a349f7 2021-07-24 op static struct req *req_by_id(uint32_t);
67 77ae5e91 2021-07-24 op static void die(void) __attribute__((__noreturn__));
69 77ae5e91 2021-07-24 op static void try_to_connect(int, short, void*);
71 c8dba1e6 2021-07-24 op #if HAVE_ASR_RUN
72 77ae5e91 2021-07-24 op static void query_done(struct asr_result*, void*);
73 77ae5e91 2021-07-24 op static void async_conn_towards(struct req*);
75 77ae5e91 2021-07-24 op static void blocking_conn_towards(struct req*);
78 77ae5e91 2021-07-24 op static void close_with_err(struct req*, const char*);
79 77ae5e91 2021-07-24 op static void close_with_errf(struct req*, const char*, ...)
80 bfb9acb0 2021-07-24 op __attribute__((format(printf, 2, 3)));
82 77ae5e91 2021-07-24 op static void net_tls_handshake(int, short, void *);
83 77ae5e91 2021-07-24 op static void net_tls_readcb(int, short, void *);
84 77ae5e91 2021-07-24 op static void net_tls_writecb(int, short, void *);
86 77ae5e91 2021-07-24 op static int gemini_parse_reply(struct req *, const char *, size_t);
88 77ae5e91 2021-07-24 op static void net_ready(struct req *req);
89 77ae5e91 2021-07-24 op static void net_read(struct bufferevent *, void *);
90 77ae5e91 2021-07-24 op static void net_write(struct bufferevent *, void *);
91 77ae5e91 2021-07-24 op static void net_error(struct bufferevent *, short, void *);
93 77ae5e91 2021-07-24 op static void handle_get_raw(struct imsg *, size_t);
94 77ae5e91 2021-07-24 op static void handle_cert_status(struct imsg*, size_t);
95 77ae5e91 2021-07-24 op static void handle_proceed(struct imsg*, size_t);
96 77ae5e91 2021-07-24 op static void handle_stop(struct imsg*, size_t);
97 77ae5e91 2021-07-24 op static void handle_quit(struct imsg*, size_t);
98 77ae5e91 2021-07-24 op static void handle_dispatch_imsg(int, short, void*);
100 77ae5e91 2021-07-24 op static int net_send_ui(int, uint32_t, const void *, uint16_t);
102 c8dba1e6 2021-07-24 op /* TODO: making this customizable */
103 c8dba1e6 2021-07-24 op struct timeval timeout_for_handshake = { 5, 0 };
105 c8dba1e6 2021-07-24 op static imsg_handlerfn *handlers[] = {
106 c8dba1e6 2021-07-24 op [IMSG_GET_RAW] = handle_get_raw,
107 c8dba1e6 2021-07-24 op [IMSG_CERT_STATUS] = handle_cert_status,
108 c8dba1e6 2021-07-24 op [IMSG_PROCEED] = handle_proceed,
109 c8dba1e6 2021-07-24 op [IMSG_STOP] = handle_stop,
110 c8dba1e6 2021-07-24 op [IMSG_QUIT] = handle_quit,
113 c8dba1e6 2021-07-24 op typedef void (*statefn)(int, short, void*);
115 c8dba1e6 2021-07-24 op TAILQ_HEAD(, req) reqhead;
117 c8dba1e6 2021-07-24 op static inline void
118 c8dba1e6 2021-07-24 op yield_r(struct req *req, statefn fn, struct timeval *tv)
120 c8dba1e6 2021-07-24 op event_once(req->fd, EV_READ, fn, req, tv);
123 c8dba1e6 2021-07-24 op static inline void
124 c8dba1e6 2021-07-24 op yield_w(struct req *req, statefn fn, struct timeval *tv)
126 c8dba1e6 2021-07-24 op event_once(req->fd, EV_WRITE, fn, req, tv);
129 e2a349f7 2021-07-24 op static struct req *
130 e2a349f7 2021-07-24 op req_by_id(uint32_t id)
132 e2a349f7 2021-07-24 op struct req *r;
134 e2a349f7 2021-07-24 op TAILQ_FOREACH(r, &reqhead, reqs) {
135 e2a349f7 2021-07-24 op if (r->id == id)
142 c8dba1e6 2021-07-24 op static void __attribute__((__noreturn__))
145 c8dba1e6 2021-07-24 op abort(); /* TODO */
149 c8dba1e6 2021-07-24 op try_to_connect(int fd, short ev, void *d)
151 c8dba1e6 2021-07-24 op struct req *req = d;
152 c8dba1e6 2021-07-24 op int error = 0;
153 c8dba1e6 2021-07-24 op socklen_t len = sizeof(error);
156 c8dba1e6 2021-07-24 op if (req->p == NULL)
159 c8dba1e6 2021-07-24 op if (req->fd != -1) {
160 bfb9acb0 2021-07-24 op if (getsockopt(req->fd, SOL_SOCKET, SO_ERROR, &error,
163 c8dba1e6 2021-07-24 op if (error != 0) {
164 c8dba1e6 2021-07-24 op errno = error;
170 bfb9acb0 2021-07-24 op req->fd = socket(req->p->ai_family, req->p->ai_socktype,
171 bfb9acb0 2021-07-24 op req->p->ai_protocol);
172 c8dba1e6 2021-07-24 op if (req->fd == -1) {
173 c8dba1e6 2021-07-24 op req->p = req->p->ai_next;
176 c8dba1e6 2021-07-24 op mark_nonblock(req->fd);
177 c8dba1e6 2021-07-24 op if (connect(req->fd, req->p->ai_addr, req->p->ai_addrlen) == 0)
179 c8dba1e6 2021-07-24 op yield_w(req, try_to_connect, NULL);
184 c8dba1e6 2021-07-24 op freeaddrinfo(req->servinfo);
185 c8dba1e6 2021-07-24 op close_with_errf(req, "failed to connect to %s",
186 c8dba1e6 2021-07-24 op req->url.host);
190 c8dba1e6 2021-07-24 op freeaddrinfo(req->servinfo);
192 5fb52fc0 2021-07-25 op switch (req->proto) {
193 5fb52fc0 2021-07-25 op case PROTO_FINGER:
194 5fb52fc0 2021-07-25 op /* finger doesn't have a header */
195 5fb52fc0 2021-07-25 op req->done_header = 1;
196 5fb52fc0 2021-07-25 op net_ready(req);
199 5fb52fc0 2021-07-25 op case PROTO_GEMINI:
200 5fb52fc0 2021-07-25 op /* prepare tls */
201 5fb52fc0 2021-07-25 op if ((req->ctx = tls_client()) == NULL) {
202 5fb52fc0 2021-07-25 op close_with_errf(req, "tls_client: %s",
203 5fb52fc0 2021-07-25 op strerror(errno));
206 5fb52fc0 2021-07-25 op if (tls_configure(req->ctx, tlsconf) == -1) {
207 5fb52fc0 2021-07-25 op close_with_errf(req, "tls_configure: %s",
208 5fb52fc0 2021-07-25 op tls_error(req->ctx));
211 5fb52fc0 2021-07-25 op if (tls_connect_socket(req->ctx, req->fd, req->url.host)
213 5fb52fc0 2021-07-25 op close_with_errf(req, "tls_connect_socket: %s",
214 5fb52fc0 2021-07-25 op tls_error(req->ctx));
217 5fb52fc0 2021-07-25 op yield_w(req, net_tls_handshake, &timeout_for_handshake);
225 c8dba1e6 2021-07-24 op #if HAVE_ASR_RUN
227 c8dba1e6 2021-07-24 op query_done(struct asr_result *res, void *d)
229 c8dba1e6 2021-07-24 op struct req *req = d;
231 c8dba1e6 2021-07-24 op req->asrev = NULL;
232 c8dba1e6 2021-07-24 op if (res->ar_gai_errno != 0) {
233 c8dba1e6 2021-07-24 op close_with_errf(req, "failed to resolve %s: %s",
234 c8dba1e6 2021-07-24 op req->url.host, gai_strerror(res->ar_gai_errno));
238 c8dba1e6 2021-07-24 op req->fd = -1;
239 c8dba1e6 2021-07-24 op req->servinfo = res->ar_addrinfo;
240 c8dba1e6 2021-07-24 op req->p = res->ar_addrinfo;
241 c8dba1e6 2021-07-24 op try_to_connect(0, 0, req);
245 c8dba1e6 2021-07-24 op async_conn_towards(struct req *req)
247 c8dba1e6 2021-07-24 op struct asr_query *q;
248 c8dba1e6 2021-07-24 op const char *proto = "1965";
250 c8dba1e6 2021-07-24 op if (*req->url.port != '\0')
251 c8dba1e6 2021-07-24 op proto = req->url.port;
253 c8dba1e6 2021-07-24 op req->hints.ai_family = AF_UNSPEC;
254 c8dba1e6 2021-07-24 op req->hints.ai_socktype = SOCK_STREAM;
255 c8dba1e6 2021-07-24 op q = getaddrinfo_async(req->url.host, proto, &req->hints, NULL);
256 c8dba1e6 2021-07-24 op req->asrev = event_asr_run(q, query_done, req);
260 c8dba1e6 2021-07-24 op blocking_conn_towards(struct req *req)
262 c8dba1e6 2021-07-24 op struct addrinfo hints;
263 c8dba1e6 2021-07-24 op struct phos_uri *url = &req->url;
265 c8dba1e6 2021-07-24 op const char *proto = "1965";
267 c8dba1e6 2021-07-24 op if (*url->port != '\0')
268 c8dba1e6 2021-07-24 op proto = url->port;
270 c8dba1e6 2021-07-24 op memset(&hints, 0, sizeof(hints));
271 c8dba1e6 2021-07-24 op hints.ai_family = AF_UNSPEC;
272 c8dba1e6 2021-07-24 op hints.ai_socktype = SOCK_STREAM;
274 c8dba1e6 2021-07-24 op if ((status = getaddrinfo(url->host, proto, &hints, &req->servinfo))) {
275 c8dba1e6 2021-07-24 op close_with_errf(req, "failed to resolve %s: %s",
276 c8dba1e6 2021-07-24 op url->host, gai_strerror(status));
280 c8dba1e6 2021-07-24 op req->fd = -1;
281 c8dba1e6 2021-07-24 op req->p = req->servinfo;
282 c8dba1e6 2021-07-24 op try_to_connect(0, 0, req);
287 c8dba1e6 2021-07-24 op close_conn(int fd, short ev, void *d)
289 c8dba1e6 2021-07-24 op struct req *req = d;
291 c8dba1e6 2021-07-24 op #if HAVE_ASR_RUN
292 c8dba1e6 2021-07-24 op if (req->asrev != NULL)
293 c8dba1e6 2021-07-24 op event_asr_abort(req->asrev);
296 5b762f01 2021-07-24 op if (req->bev != NULL) {
297 5b762f01 2021-07-24 op bufferevent_free(req->bev);
298 5b762f01 2021-07-24 op req->bev = NULL;
301 c8dba1e6 2021-07-24 op if (req->ctx != NULL) {
302 c8dba1e6 2021-07-24 op switch (tls_close(req->ctx)) {
303 c8dba1e6 2021-07-24 op case TLS_WANT_POLLIN:
304 c8dba1e6 2021-07-24 op yield_r(req, close_conn, NULL);
306 c8dba1e6 2021-07-24 op case TLS_WANT_POLLOUT:
307 c8dba1e6 2021-07-24 op yield_w(req, close_conn, NULL);
311 c8dba1e6 2021-07-24 op tls_free(req->ctx);
312 5b762f01 2021-07-24 op req->ctx = NULL;
315 c8dba1e6 2021-07-24 op TAILQ_REMOVE(&reqhead, req, reqs);
316 c8dba1e6 2021-07-24 op if (req->fd != -1)
317 c8dba1e6 2021-07-24 op close(req->fd);
322 c8dba1e6 2021-07-24 op close_with_err(struct req *req, const char *err)
324 c8dba1e6 2021-07-24 op net_send_ui(IMSG_ERR, req->id, err, strlen(err)+1);
325 c8dba1e6 2021-07-24 op close_conn(0, 0, req);
329 c8dba1e6 2021-07-24 op close_with_errf(struct req *req, const char *fmt, ...)
334 c8dba1e6 2021-07-24 op va_start(ap, fmt);
335 c8dba1e6 2021-07-24 op if (vasprintf(&s, fmt, ap) == -1)
339 c8dba1e6 2021-07-24 op close_with_err(req, s);
344 5b762f01 2021-07-24 op net_tls_handshake(int fd, short event, void *d)
346 c8dba1e6 2021-07-24 op struct req *req = d;
347 c8dba1e6 2021-07-24 op const char *hash;
349 5b762f01 2021-07-24 op if (event == EV_TIMEOUT) {
350 c8dba1e6 2021-07-24 op close_with_err(req, "Timeout loading page");
354 c8dba1e6 2021-07-24 op switch (tls_handshake(req->ctx)) {
355 c8dba1e6 2021-07-24 op case TLS_WANT_POLLIN:
356 5b762f01 2021-07-24 op yield_r(req, net_tls_handshake, NULL);
358 c8dba1e6 2021-07-24 op case TLS_WANT_POLLOUT:
359 5b762f01 2021-07-24 op yield_w(req, net_tls_handshake, NULL);
363 c8dba1e6 2021-07-24 op hash = tls_peer_cert_hash(req->ctx);
364 c8dba1e6 2021-07-24 op if (hash == NULL) {
365 bfb9acb0 2021-07-24 op close_with_errf(req, "handshake failed: %s",
366 bfb9acb0 2021-07-24 op tls_error(req->ctx));
369 c8dba1e6 2021-07-24 op net_send_ui(IMSG_CHECK_CERT, req->id, hash, strlen(hash)+1);
373 5b762f01 2021-07-24 op net_tls_readcb(int fd, short event, void *d)
375 5b762f01 2021-07-24 op struct bufferevent *bufev = d;
376 5b762f01 2021-07-24 op struct req *req = bufev->cbarg;
377 69f631d9 2021-07-25 op char buf[IBUF_READ_SIZE];
378 5b762f01 2021-07-24 op int what = EVBUFFER_READ;
379 5b762f01 2021-07-24 op int howmuch = IBUF_READ_SIZE;
383 5b762f01 2021-07-24 op if (event == EV_TIMEOUT) {
384 5b762f01 2021-07-24 op what |= EVBUFFER_TIMEOUT;
388 5b762f01 2021-07-24 op if (bufev->wm_read.high != 0)
389 5b762f01 2021-07-24 op howmuch = MIN(sizeof(buf), bufev->wm_read.high);
391 5b762f01 2021-07-24 op switch (ret = tls_read(req->ctx, buf, howmuch)) {
392 c8dba1e6 2021-07-24 op case TLS_WANT_POLLIN:
393 c8dba1e6 2021-07-24 op case TLS_WANT_POLLOUT:
396 5b762f01 2021-07-24 op what |= EVBUFFER_ERROR;
401 5b762f01 2021-07-24 op if (len == 0) {
402 5b762f01 2021-07-24 op what |= EVBUFFER_EOF;
406 5b762f01 2021-07-24 op if (evbuffer_add(bufev->input, buf, len) == -1) {
407 5b762f01 2021-07-24 op what |= EVBUFFER_ERROR;
411 5b762f01 2021-07-24 op event_add(&bufev->ev_read, NULL);
413 5b762f01 2021-07-24 op len = EVBUFFER_LENGTH(bufev->input);
414 5b762f01 2021-07-24 op if (bufev->wm_read.low != 0 && len < bufev->wm_read.low)
417 5b762f01 2021-07-24 op if (bufev->readcb != NULL)
418 5b762f01 2021-07-24 op (*bufev->readcb)(bufev, bufev->cbarg);
422 5b762f01 2021-07-24 op event_add(&bufev->ev_read, NULL);
426 5b762f01 2021-07-24 op (*bufev->errorcb)(bufev, what, bufev->cbarg);
430 5b762f01 2021-07-24 op net_tls_writecb(int fd, short event, void *d)
432 5b762f01 2021-07-24 op struct bufferevent *bufev = d;
433 5b762f01 2021-07-24 op struct req *req = bufev->cbarg;
436 5b762f01 2021-07-24 op short what = EVBUFFER_WRITE;
438 5b762f01 2021-07-24 op if (event & EV_TIMEOUT) {
439 5b762f01 2021-07-24 op what |= EVBUFFER_TIMEOUT;
443 5b762f01 2021-07-24 op if (EVBUFFER_LENGTH(bufev->output) != 0) {
444 5b762f01 2021-07-24 op ret = tls_write(req->ctx, EVBUFFER_DATA(bufev->output),
445 5b762f01 2021-07-24 op EVBUFFER_LENGTH(bufev->output));
446 5b762f01 2021-07-24 op switch (ret) {
447 5b762f01 2021-07-24 op case TLS_WANT_POLLIN:
448 5b762f01 2021-07-24 op case TLS_WANT_POLLOUT:
451 5b762f01 2021-07-24 op what |= EVBUFFER_ERROR;
455 5b762f01 2021-07-24 op evbuffer_drain(bufev->output, len);
458 5b762f01 2021-07-24 op if (EVBUFFER_LENGTH(bufev->output) != 0)
459 5b762f01 2021-07-24 op event_add(&bufev->ev_write, NULL);
461 5b762f01 2021-07-24 op if (bufev->writecb != NULL &&
462 5b762f01 2021-07-24 op EVBUFFER_LENGTH(bufev->output) <= bufev->wm_write.low)
463 5b762f01 2021-07-24 op (*bufev->writecb)(bufev, bufev->cbarg);
467 5b762f01 2021-07-24 op event_add(&bufev->ev_write, NULL);
471 5b762f01 2021-07-24 op (*bufev->errorcb)(bufev, what, bufev->cbarg);
475 5b762f01 2021-07-24 op gemini_parse_reply(struct req *req, const char *header, size_t len)
478 5b762f01 2021-07-24 op const char *t;
483 5b762f01 2021-07-24 op if (!isdigit(header[0]) || !isdigit(header[1]))
486 5b762f01 2021-07-24 op code = (header[0] - '0')*10 + (header[1] - '0');
487 5b762f01 2021-07-24 op if (header[2] != ' ')
490 5b762f01 2021-07-24 op t = header + 3;
492 5b762f01 2021-07-24 op net_send_ui(IMSG_GOT_CODE, req->id, &code, sizeof(code));
493 5b762f01 2021-07-24 op net_send_ui(IMSG_GOT_META, req->id, t, strlen(t)+1);
495 5b762f01 2021-07-24 op bufferevent_disable(req->bev, EV_READ|EV_WRITE);
497 5b762f01 2021-07-24 op if (code < 20 || code >= 30)
498 c8dba1e6 2021-07-24 op close_conn(0, 0, req);
502 5b762f01 2021-07-24 op /* called when we're ready to read/write */
504 5b762f01 2021-07-24 op net_ready(struct req *req)
506 5b762f01 2021-07-24 op req->bev = bufferevent_new(req->fd, net_read, net_write, net_error,
508 5b762f01 2021-07-24 op if (req->bev == NULL)
511 5b762f01 2021-07-24 op /* setup tls i/o layer */
512 5b762f01 2021-07-24 op if (req->ctx != NULL) {
513 5b762f01 2021-07-24 op event_set(&req->bev->ev_read, req->fd, EV_READ,
514 5b762f01 2021-07-24 op net_tls_readcb, req->bev);
515 5b762f01 2021-07-24 op event_set(&req->bev->ev_write, req->fd, EV_WRITE,
516 5b762f01 2021-07-24 op net_tls_writecb, req->bev);
519 5b762f01 2021-07-24 op /* TODO: adjust watermarks */
520 5b762f01 2021-07-24 op bufferevent_setwatermark(req->bev, EV_WRITE, 1, 0);
521 5b762f01 2021-07-24 op bufferevent_setwatermark(req->bev, EV_READ, 1, 0);
523 5b762f01 2021-07-24 op bufferevent_enable(req->bev, EV_READ|EV_WRITE);
525 5b762f01 2021-07-24 op bufferevent_write(req->bev, req->req, req->len);
528 5b762f01 2021-07-24 op /* called after a read has been done */
530 5b762f01 2021-07-24 op net_read(struct bufferevent *bev, void *d)
532 5b762f01 2021-07-24 op struct req *req = d;
533 5b762f01 2021-07-24 op struct evbuffer *src = EVBUFFER_INPUT(bev);
537 5b762f01 2021-07-24 op char *header;
539 5b762f01 2021-07-24 op if (!req->done_header) {
540 5b762f01 2021-07-24 op header = evbuffer_readln(src, &len, EVBUFFER_EOL_CRLF_STRICT);
541 5b762f01 2021-07-24 op if (header == NULL && EVBUFFER_LENGTH(src) >= 1024)
543 5b762f01 2021-07-24 op if (header == NULL)
545 5b762f01 2021-07-24 op r = gemini_parse_reply(req, header, len);
546 5b762f01 2021-07-24 op free(header);
549 5b762f01 2021-07-24 op req->done_header = 1;
553 5b762f01 2021-07-24 op if ((len = EVBUFFER_LENGTH(src)) == 0)
555 5b762f01 2021-07-24 op data = EVBUFFER_DATA(src);
556 5b762f01 2021-07-24 op net_send_ui(IMSG_BUF, req->id, data, len);
557 5b762f01 2021-07-24 op evbuffer_drain(src, len);
561 5b762f01 2021-07-24 op (*bev->errorcb)(bev, EVBUFFER_READ, bev->cbarg);
564 5b762f01 2021-07-24 op /* called after a write has been done */
566 5b762f01 2021-07-24 op net_write(struct bufferevent *bev, void *d)
568 5b762f01 2021-07-24 op struct evbuffer *dst = EVBUFFER_OUTPUT(bev);
570 5b762f01 2021-07-24 op if (EVBUFFER_LENGTH(dst) == 0)
571 5b762f01 2021-07-24 op (*bev->errorcb)(bev, EVBUFFER_WRITE, bev->cbarg);
575 5b762f01 2021-07-24 op net_error(struct bufferevent *bev, short error, void *d)
577 c8dba1e6 2021-07-24 op struct req *req = d;
579 5b762f01 2021-07-24 op if (error & EVBUFFER_TIMEOUT) {
580 5b762f01 2021-07-24 op close_with_err(req, "Timeout loading page");
584 5b762f01 2021-07-24 op if (error & EVBUFFER_ERROR) {
585 5b762f01 2021-07-24 op close_with_err(req, "buffer event error");
589 5b762f01 2021-07-24 op if (error & EVBUFFER_EOF) {
590 5b762f01 2021-07-24 op net_send_ui(IMSG_EOF, req->id, NULL, 0);
591 5b762f01 2021-07-24 op close_conn(0, 0, req);
595 5b762f01 2021-07-24 op if (error & EVBUFFER_WRITE) {
596 5b762f01 2021-07-24 op /* finished sending request */
597 5b762f01 2021-07-24 op bufferevent_disable(bev, EV_WRITE);
601 5b762f01 2021-07-24 op if (error & EVBUFFER_READ) {
602 5b762f01 2021-07-24 op close_with_err(req, "protocol error");
606 5b762f01 2021-07-24 op close_with_errf(req, "unknown event error %x", error);
610 c8dba1e6 2021-07-24 op handle_get_raw(struct imsg *imsg, size_t datalen)
612 c8dba1e6 2021-07-24 op struct req *req;
613 c8dba1e6 2021-07-24 op struct get_req *r;
615 c8dba1e6 2021-07-24 op r = imsg->data;
617 c8dba1e6 2021-07-24 op if (datalen != sizeof(*r))
620 c8dba1e6 2021-07-24 op if ((req = calloc(1, sizeof(*req))) == NULL)
623 c8dba1e6 2021-07-24 op req->id = imsg->hdr.peerid;
624 c8dba1e6 2021-07-24 op TAILQ_INSERT_HEAD(&reqhead, req, reqs);
626 c8dba1e6 2021-07-24 op strlcpy(req->url.host, r->host, sizeof(req->url.host));
627 c8dba1e6 2021-07-24 op strlcpy(req->url.port, r->port, sizeof(req->url.port));
629 5b762f01 2021-07-24 op strlcpy(req->req, r->req, sizeof(req->req));
630 5b762f01 2021-07-24 op req->len = strlen(r->req);
632 5fb52fc0 2021-07-25 op req->proto = r->proto;
634 c8dba1e6 2021-07-24 op #if HAVE_ASR_RUN
635 c8dba1e6 2021-07-24 op async_conn_towards(req);
637 c8dba1e6 2021-07-24 op blocking_conn_towards(req);
642 c8dba1e6 2021-07-24 op handle_cert_status(struct imsg *imsg, size_t datalen)
644 c8dba1e6 2021-07-24 op struct req *req;
647 c8dba1e6 2021-07-24 op req = req_by_id(imsg->hdr.peerid);
649 c8dba1e6 2021-07-24 op if (datalen < sizeof(is_ok))
651 c8dba1e6 2021-07-24 op memcpy(&is_ok, imsg->data, sizeof(is_ok));
654 5b762f01 2021-07-24 op net_ready(req);
656 c8dba1e6 2021-07-24 op close_conn(0, 0, req);
660 c8dba1e6 2021-07-24 op handle_proceed(struct imsg *imsg, size_t datalen)
662 5b762f01 2021-07-24 op struct req *req;
664 318a6c1a 2021-07-24 op if ((req = req_by_id(imsg->hdr.peerid)) == NULL)
667 5b762f01 2021-07-24 op bufferevent_enable(req->bev, EV_READ);
671 c8dba1e6 2021-07-24 op handle_stop(struct imsg *imsg, size_t datalen)
673 c8dba1e6 2021-07-24 op struct req *req;
675 318a6c1a 2021-07-24 op if ((req = req_by_id(imsg->hdr.peerid)) == NULL)
677 c8dba1e6 2021-07-24 op close_conn(0, 0, req);
681 c8dba1e6 2021-07-24 op handle_quit(struct imsg *imsg, size_t datalen)
683 c8dba1e6 2021-07-24 op event_loopbreak();
687 c8dba1e6 2021-07-24 op handle_dispatch_imsg(int fd, short ev, void *d)
689 c8dba1e6 2021-07-24 op struct imsgev *iev = d;
691 c8dba1e6 2021-07-24 op if (dispatch_imsg(iev, ev, handlers, sizeof(handlers)) == -1)
692 c8dba1e6 2021-07-24 op err(1, "connection closed");
696 c8dba1e6 2021-07-24 op net_send_ui(int type, uint32_t peerid, const void *data,
697 c8dba1e6 2021-07-24 op uint16_t datalen)
699 c8dba1e6 2021-07-24 op return imsg_compose_event(iev_ui, type, peerid, 0, -1,
700 c8dba1e6 2021-07-24 op data, datalen);
704 f45bd2e3 2021-07-24 op net_main(void)
706 c8dba1e6 2021-07-24 op setproctitle("net");
708 c8dba1e6 2021-07-24 op TAILQ_INIT(&reqhead);
710 c8dba1e6 2021-07-24 op if ((tlsconf = tls_config_new()) == NULL)
712 c8dba1e6 2021-07-24 op tls_config_insecure_noverifycert(tlsconf);
713 c8dba1e6 2021-07-24 op tls_config_insecure_noverifyname(tlsconf);
715 c8dba1e6 2021-07-24 op event_init();
717 c8dba1e6 2021-07-24 op /* Setup pipe and event handler to the main process */
718 c8dba1e6 2021-07-24 op if ((iev_ui = malloc(sizeof(*iev_ui))) == NULL)
720 c8dba1e6 2021-07-24 op imsg_init(&iev_ui->ibuf, 3);
721 c8dba1e6 2021-07-24 op iev_ui->handler = handle_dispatch_imsg;
722 c8dba1e6 2021-07-24 op iev_ui->events = EV_READ;
723 c8dba1e6 2021-07-24 op event_set(&iev_ui->ev, iev_ui->ibuf.fd, iev_ui->events,
724 c8dba1e6 2021-07-24 op iev_ui->handler, iev_ui);
725 c8dba1e6 2021-07-24 op event_add(&iev_ui->ev, NULL);
727 c8dba1e6 2021-07-24 op sandbox_net_process();
729 c8dba1e6 2021-07-24 op event_dispatch();
731 74c0f6ba 2021-07-24 op tls_config_free(tlsconf);
732 74c0f6ba 2021-07-24 op msgbuf_clear(&iev_ui->ibuf.w);
733 74c0f6ba 2021-07-24 op close(iev_ui->ibuf.fd);
734 74c0f6ba 2021-07-24 op free(iev_ui);