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"
40 9d65b1d9 2022-01-11 op #include "utils.h"
42 c8dba1e6 2021-07-24 op static struct imsgev *iev_ui;
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 612d2546 2022-05-27 op char req[1027];
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*);
74 4e28261d 2022-05-27 op static void conn_towards(struct req*);
76 77ae5e91 2021-07-24 op static void close_with_err(struct req*, const char*);
77 77ae5e91 2021-07-24 op static void close_with_errf(struct req*, const char*, ...)
78 bfb9acb0 2021-07-24 op __attribute__((format(printf, 2, 3)));
80 77ae5e91 2021-07-24 op static void net_tls_handshake(int, short, void *);
81 77ae5e91 2021-07-24 op static void net_tls_readcb(int, short, void *);
82 77ae5e91 2021-07-24 op static void net_tls_writecb(int, short, void *);
84 77ae5e91 2021-07-24 op static int gemini_parse_reply(struct req *, const char *, size_t);
86 77ae5e91 2021-07-24 op static void net_ready(struct req *req);
87 77ae5e91 2021-07-24 op static void net_read(struct bufferevent *, void *);
88 77ae5e91 2021-07-24 op static void net_write(struct bufferevent *, void *);
89 77ae5e91 2021-07-24 op static void net_error(struct bufferevent *, short, void *);
91 77ae5e91 2021-07-24 op static void handle_get_raw(struct imsg *, size_t);
92 77ae5e91 2021-07-24 op static void handle_cert_status(struct imsg*, size_t);
93 77ae5e91 2021-07-24 op static void handle_proceed(struct imsg*, size_t);
94 77ae5e91 2021-07-24 op static void handle_stop(struct imsg*, size_t);
95 77ae5e91 2021-07-24 op static void handle_quit(struct imsg*, size_t);
96 77ae5e91 2021-07-24 op static void handle_dispatch_imsg(int, short, void*);
98 77ae5e91 2021-07-24 op static int net_send_ui(int, uint32_t, const void *, uint16_t);
100 c8dba1e6 2021-07-24 op /* TODO: making this customizable */
101 c8dba1e6 2021-07-24 op struct timeval timeout_for_handshake = { 5, 0 };
103 c8dba1e6 2021-07-24 op static imsg_handlerfn *handlers[] = {
104 c8dba1e6 2021-07-24 op [IMSG_GET_RAW] = handle_get_raw,
105 c8dba1e6 2021-07-24 op [IMSG_CERT_STATUS] = handle_cert_status,
106 c8dba1e6 2021-07-24 op [IMSG_PROCEED] = handle_proceed,
107 c8dba1e6 2021-07-24 op [IMSG_STOP] = handle_stop,
108 c8dba1e6 2021-07-24 op [IMSG_QUIT] = handle_quit,
111 c8dba1e6 2021-07-24 op typedef void (*statefn)(int, short, void*);
113 c8dba1e6 2021-07-24 op TAILQ_HEAD(, req) reqhead;
115 c8dba1e6 2021-07-24 op static inline void
116 c8dba1e6 2021-07-24 op yield_r(struct req *req, statefn fn, struct timeval *tv)
118 c8dba1e6 2021-07-24 op event_once(req->fd, EV_READ, fn, req, tv);
121 c8dba1e6 2021-07-24 op static inline void
122 c8dba1e6 2021-07-24 op yield_w(struct req *req, statefn fn, struct timeval *tv)
124 c8dba1e6 2021-07-24 op event_once(req->fd, EV_WRITE, fn, req, tv);
127 e2a349f7 2021-07-24 op static struct req *
128 e2a349f7 2021-07-24 op req_by_id(uint32_t id)
130 e2a349f7 2021-07-24 op struct req *r;
132 e2a349f7 2021-07-24 op TAILQ_FOREACH(r, &reqhead, reqs) {
133 e2a349f7 2021-07-24 op if (r->id == id)
140 c8dba1e6 2021-07-24 op static void __attribute__((__noreturn__))
143 c8dba1e6 2021-07-24 op abort(); /* TODO */
147 c8dba1e6 2021-07-24 op try_to_connect(int fd, short ev, void *d)
149 c8dba1e6 2021-07-24 op struct req *req = d;
150 c8dba1e6 2021-07-24 op int error = 0;
151 c8dba1e6 2021-07-24 op socklen_t len = sizeof(error);
154 c8dba1e6 2021-07-24 op if (req->p == NULL)
157 c8dba1e6 2021-07-24 op if (req->fd != -1) {
158 bfb9acb0 2021-07-24 op if (getsockopt(req->fd, SOL_SOCKET, SO_ERROR, &error,
161 c8dba1e6 2021-07-24 op if (error != 0) {
162 95a8c791 2021-08-26 op errno = error;
168 bfb9acb0 2021-07-24 op req->fd = socket(req->p->ai_family, req->p->ai_socktype,
169 bfb9acb0 2021-07-24 op req->p->ai_protocol);
170 c8dba1e6 2021-07-24 op if (req->fd == -1) {
171 c8dba1e6 2021-07-24 op req->p = req->p->ai_next;
175 12b80284 2022-05-27 op if (!mark_nonblock_cloexec(req->fd))
177 12b80284 2022-05-27 op if (connect(req->fd, req->p->ai_addr, req->p->ai_addrlen) == 0)
179 12b80284 2022-05-27 op yield_w(req, try_to_connect, NULL);
183 c8dba1e6 2021-07-24 op freeaddrinfo(req->servinfo);
184 c8dba1e6 2021-07-24 op close_with_errf(req, "failed to connect to %s",
185 c8dba1e6 2021-07-24 op req->url.host);
189 c8dba1e6 2021-07-24 op freeaddrinfo(req->servinfo);
191 5fb52fc0 2021-07-25 op switch (req->proto) {
192 5fb52fc0 2021-07-25 op case PROTO_FINGER:
193 1663bf1e 2021-07-25 op case PROTO_GOPHER:
194 1663bf1e 2021-07-25 op /* finger and gopher don't have a header nor TLS */
195 5fb52fc0 2021-07-25 op req->done_header = 1;
196 5fb52fc0 2021-07-25 op net_ready(req);
199 b38d86fc 2022-01-04 op case PROTO_GEMINI: {
200 b38d86fc 2022-01-04 op struct tls_config *conf;
202 b38d86fc 2022-01-04 op if ((conf = tls_config_new()) == NULL)
205 b38d86fc 2022-01-04 op tls_config_insecure_noverifycert(conf);
206 b38d86fc 2022-01-04 op tls_config_insecure_noverifyname(conf);
208 5fb52fc0 2021-07-25 op /* prepare tls */
209 5fb52fc0 2021-07-25 op if ((req->ctx = tls_client()) == NULL) {
210 5fb52fc0 2021-07-25 op close_with_errf(req, "tls_client: %s",
211 5fb52fc0 2021-07-25 op strerror(errno));
215 b38d86fc 2022-01-04 op if (tls_configure(req->ctx, conf) == -1) {
216 5fb52fc0 2021-07-25 op close_with_errf(req, "tls_configure: %s",
217 5fb52fc0 2021-07-25 op tls_error(req->ctx));
220 b38d86fc 2022-01-04 op tls_config_free(conf);
222 5fb52fc0 2021-07-25 op if (tls_connect_socket(req->ctx, req->fd, req->url.host)
224 5fb52fc0 2021-07-25 op close_with_errf(req, "tls_connect_socket: %s",
225 5fb52fc0 2021-07-25 op tls_error(req->ctx));
228 5fb52fc0 2021-07-25 op yield_w(req, net_tls_handshake, &timeout_for_handshake);
237 c8dba1e6 2021-07-24 op #if HAVE_ASR_RUN
239 c8dba1e6 2021-07-24 op query_done(struct asr_result *res, void *d)
241 c8dba1e6 2021-07-24 op struct req *req = d;
243 c8dba1e6 2021-07-24 op req->asrev = NULL;
244 c8dba1e6 2021-07-24 op if (res->ar_gai_errno != 0) {
245 c8dba1e6 2021-07-24 op close_with_errf(req, "failed to resolve %s: %s",
246 c8dba1e6 2021-07-24 op req->url.host, gai_strerror(res->ar_gai_errno));
250 c8dba1e6 2021-07-24 op req->fd = -1;
251 c8dba1e6 2021-07-24 op req->servinfo = res->ar_addrinfo;
252 c8dba1e6 2021-07-24 op req->p = res->ar_addrinfo;
253 c8dba1e6 2021-07-24 op try_to_connect(0, 0, req);
257 4e28261d 2022-05-27 op conn_towards(struct req *req)
259 c8dba1e6 2021-07-24 op struct asr_query *q;
260 c8dba1e6 2021-07-24 op const char *proto = "1965";
262 c8dba1e6 2021-07-24 op if (*req->url.port != '\0')
263 c8dba1e6 2021-07-24 op proto = req->url.port;
265 c8dba1e6 2021-07-24 op req->hints.ai_family = AF_UNSPEC;
266 c8dba1e6 2021-07-24 op req->hints.ai_socktype = SOCK_STREAM;
267 c8dba1e6 2021-07-24 op q = getaddrinfo_async(req->url.host, proto, &req->hints, NULL);
268 c8dba1e6 2021-07-24 op req->asrev = event_asr_run(q, query_done, req);
272 4e28261d 2022-05-27 op conn_towards(struct req *req)
274 c8dba1e6 2021-07-24 op struct addrinfo hints;
275 c8dba1e6 2021-07-24 op struct phos_uri *url = &req->url;
277 c8dba1e6 2021-07-24 op const char *proto = "1965";
279 c8dba1e6 2021-07-24 op if (*url->port != '\0')
280 c8dba1e6 2021-07-24 op proto = url->port;
282 c8dba1e6 2021-07-24 op memset(&hints, 0, sizeof(hints));
283 c8dba1e6 2021-07-24 op hints.ai_family = AF_UNSPEC;
284 c8dba1e6 2021-07-24 op hints.ai_socktype = SOCK_STREAM;
286 c8dba1e6 2021-07-24 op if ((status = getaddrinfo(url->host, proto, &hints, &req->servinfo))) {
287 c8dba1e6 2021-07-24 op close_with_errf(req, "failed to resolve %s: %s",
288 c8dba1e6 2021-07-24 op url->host, gai_strerror(status));
292 c8dba1e6 2021-07-24 op req->fd = -1;
293 c8dba1e6 2021-07-24 op req->p = req->servinfo;
294 c8dba1e6 2021-07-24 op try_to_connect(0, 0, req);
299 c8dba1e6 2021-07-24 op close_conn(int fd, short ev, void *d)
301 c8dba1e6 2021-07-24 op struct req *req = d;
303 c8dba1e6 2021-07-24 op #if HAVE_ASR_RUN
304 c8dba1e6 2021-07-24 op if (req->asrev != NULL)
305 c8dba1e6 2021-07-24 op event_asr_abort(req->asrev);
308 5b762f01 2021-07-24 op if (req->bev != NULL) {
309 5b762f01 2021-07-24 op bufferevent_free(req->bev);
310 5b762f01 2021-07-24 op req->bev = NULL;
313 c8dba1e6 2021-07-24 op if (req->ctx != NULL) {
314 c8dba1e6 2021-07-24 op switch (tls_close(req->ctx)) {
315 c8dba1e6 2021-07-24 op case TLS_WANT_POLLIN:
316 c8dba1e6 2021-07-24 op yield_r(req, close_conn, NULL);
318 c8dba1e6 2021-07-24 op case TLS_WANT_POLLOUT:
319 c8dba1e6 2021-07-24 op yield_w(req, close_conn, NULL);
323 c8dba1e6 2021-07-24 op tls_free(req->ctx);
324 5b762f01 2021-07-24 op req->ctx = NULL;
327 c8dba1e6 2021-07-24 op TAILQ_REMOVE(&reqhead, req, reqs);
328 c8dba1e6 2021-07-24 op if (req->fd != -1)
329 c8dba1e6 2021-07-24 op close(req->fd);
334 c8dba1e6 2021-07-24 op close_with_err(struct req *req, const char *err)
336 c8dba1e6 2021-07-24 op net_send_ui(IMSG_ERR, req->id, err, strlen(err)+1);
337 c8dba1e6 2021-07-24 op close_conn(0, 0, req);
341 c8dba1e6 2021-07-24 op close_with_errf(struct req *req, const char *fmt, ...)
346 c8dba1e6 2021-07-24 op va_start(ap, fmt);
347 c8dba1e6 2021-07-24 op if (vasprintf(&s, fmt, ap) == -1)
351 c8dba1e6 2021-07-24 op close_with_err(req, s);
356 5b762f01 2021-07-24 op net_tls_handshake(int fd, short event, void *d)
358 c8dba1e6 2021-07-24 op struct req *req = d;
359 c8dba1e6 2021-07-24 op const char *hash;
361 5b762f01 2021-07-24 op if (event == EV_TIMEOUT) {
362 c8dba1e6 2021-07-24 op close_with_err(req, "Timeout loading page");
366 c8dba1e6 2021-07-24 op switch (tls_handshake(req->ctx)) {
367 c8dba1e6 2021-07-24 op case TLS_WANT_POLLIN:
368 5b762f01 2021-07-24 op yield_r(req, net_tls_handshake, NULL);
370 c8dba1e6 2021-07-24 op case TLS_WANT_POLLOUT:
371 5b762f01 2021-07-24 op yield_w(req, net_tls_handshake, NULL);
375 c8dba1e6 2021-07-24 op hash = tls_peer_cert_hash(req->ctx);
376 c8dba1e6 2021-07-24 op if (hash == NULL) {
377 bfb9acb0 2021-07-24 op close_with_errf(req, "handshake failed: %s",
378 bfb9acb0 2021-07-24 op tls_error(req->ctx));
381 c8dba1e6 2021-07-24 op net_send_ui(IMSG_CHECK_CERT, req->id, hash, strlen(hash)+1);
385 5b762f01 2021-07-24 op net_tls_readcb(int fd, short event, void *d)
387 5b762f01 2021-07-24 op struct bufferevent *bufev = d;
388 5b762f01 2021-07-24 op struct req *req = bufev->cbarg;
389 69f631d9 2021-07-25 op char buf[IBUF_READ_SIZE];
390 5b762f01 2021-07-24 op int what = EVBUFFER_READ;
391 5b762f01 2021-07-24 op int howmuch = IBUF_READ_SIZE;
396 5b762f01 2021-07-24 op if (event == EV_TIMEOUT) {
397 5b762f01 2021-07-24 op what |= EVBUFFER_TIMEOUT;
401 5b762f01 2021-07-24 op if (bufev->wm_read.high != 0)
402 5b762f01 2021-07-24 op howmuch = MIN(sizeof(buf), bufev->wm_read.high);
404 5b762f01 2021-07-24 op switch (ret = tls_read(req->ctx, buf, howmuch)) {
405 c8dba1e6 2021-07-24 op case TLS_WANT_POLLIN:
406 c8dba1e6 2021-07-24 op case TLS_WANT_POLLOUT:
409 5b762f01 2021-07-24 op what |= EVBUFFER_ERROR;
414 5b762f01 2021-07-24 op if (len == 0) {
415 5b762f01 2021-07-24 op what |= EVBUFFER_EOF;
419 1470eab3 2021-07-27 op res = evbuffer_add(bufev->input, buf, len);
420 1470eab3 2021-07-27 op if (res == -1) {
421 5b762f01 2021-07-24 op what |= EVBUFFER_ERROR;
425 5b762f01 2021-07-24 op event_add(&bufev->ev_read, NULL);
427 5b762f01 2021-07-24 op len = EVBUFFER_LENGTH(bufev->input);
428 5b762f01 2021-07-24 op if (bufev->wm_read.low != 0 && len < bufev->wm_read.low)
431 5b762f01 2021-07-24 op if (bufev->readcb != NULL)
432 5b762f01 2021-07-24 op (*bufev->readcb)(bufev, bufev->cbarg);
436 5b762f01 2021-07-24 op event_add(&bufev->ev_read, NULL);
440 5b762f01 2021-07-24 op (*bufev->errorcb)(bufev, what, bufev->cbarg);
444 5b762f01 2021-07-24 op net_tls_writecb(int fd, short event, void *d)
446 5b762f01 2021-07-24 op struct bufferevent *bufev = d;
447 5b762f01 2021-07-24 op struct req *req = bufev->cbarg;
450 5b762f01 2021-07-24 op short what = EVBUFFER_WRITE;
452 5b762f01 2021-07-24 op if (event & EV_TIMEOUT) {
453 5b762f01 2021-07-24 op what |= EVBUFFER_TIMEOUT;
457 5b762f01 2021-07-24 op if (EVBUFFER_LENGTH(bufev->output) != 0) {
458 5b762f01 2021-07-24 op ret = tls_write(req->ctx, EVBUFFER_DATA(bufev->output),
459 5b762f01 2021-07-24 op EVBUFFER_LENGTH(bufev->output));
460 5b762f01 2021-07-24 op switch (ret) {
461 5b762f01 2021-07-24 op case TLS_WANT_POLLIN:
462 5b762f01 2021-07-24 op case TLS_WANT_POLLOUT:
465 5b762f01 2021-07-24 op what |= EVBUFFER_ERROR;
470 5b762f01 2021-07-24 op evbuffer_drain(bufev->output, len);
473 5b762f01 2021-07-24 op if (EVBUFFER_LENGTH(bufev->output) != 0)
474 5b762f01 2021-07-24 op event_add(&bufev->ev_write, NULL);
476 5b762f01 2021-07-24 op if (bufev->writecb != NULL &&
477 5b762f01 2021-07-24 op EVBUFFER_LENGTH(bufev->output) <= bufev->wm_write.low)
478 5b762f01 2021-07-24 op (*bufev->writecb)(bufev, bufev->cbarg);
482 5b762f01 2021-07-24 op event_add(&bufev->ev_write, NULL);
486 5b762f01 2021-07-24 op (*bufev->errorcb)(bufev, what, bufev->cbarg);
490 5b762f01 2021-07-24 op gemini_parse_reply(struct req *req, const char *header, size_t len)
493 5b762f01 2021-07-24 op const char *t;
498 5b762f01 2021-07-24 op if (!isdigit(header[0]) || !isdigit(header[1]))
501 5b762f01 2021-07-24 op code = (header[0] - '0')*10 + (header[1] - '0');
502 5b762f01 2021-07-24 op if (header[2] != ' ')
505 5b762f01 2021-07-24 op t = header + 3;
507 5b762f01 2021-07-24 op net_send_ui(IMSG_GOT_CODE, req->id, &code, sizeof(code));
508 5b762f01 2021-07-24 op net_send_ui(IMSG_GOT_META, req->id, t, strlen(t)+1);
510 5b762f01 2021-07-24 op bufferevent_disable(req->bev, EV_READ|EV_WRITE);
515 5b762f01 2021-07-24 op /* called when we're ready to read/write */
517 5b762f01 2021-07-24 op net_ready(struct req *req)
519 5b762f01 2021-07-24 op req->bev = bufferevent_new(req->fd, net_read, net_write, net_error,
521 5b762f01 2021-07-24 op if (req->bev == NULL)
524 b5c5e56d 2021-07-28 op #if HAVE_EVENT2
525 73bb7969 2021-07-27 op evbuffer_unfreeze(req->bev->input, 0);
526 73bb7969 2021-07-27 op evbuffer_unfreeze(req->bev->output, 1);
529 5b762f01 2021-07-24 op /* setup tls i/o layer */
530 5b762f01 2021-07-24 op if (req->ctx != NULL) {
531 5b762f01 2021-07-24 op event_set(&req->bev->ev_read, req->fd, EV_READ,
532 5b762f01 2021-07-24 op net_tls_readcb, req->bev);
533 5b762f01 2021-07-24 op event_set(&req->bev->ev_write, req->fd, EV_WRITE,
534 5b762f01 2021-07-24 op net_tls_writecb, req->bev);
537 5b762f01 2021-07-24 op /* TODO: adjust watermarks */
538 5b762f01 2021-07-24 op bufferevent_setwatermark(req->bev, EV_WRITE, 1, 0);
539 5b762f01 2021-07-24 op bufferevent_setwatermark(req->bev, EV_READ, 1, 0);
541 5b762f01 2021-07-24 op bufferevent_enable(req->bev, EV_READ|EV_WRITE);
543 5b762f01 2021-07-24 op bufferevent_write(req->bev, req->req, req->len);
546 5b762f01 2021-07-24 op /* called after a read has been done */
548 5b762f01 2021-07-24 op net_read(struct bufferevent *bev, void *d)
550 5b762f01 2021-07-24 op struct req *req = d;
551 5b762f01 2021-07-24 op struct evbuffer *src = EVBUFFER_INPUT(bev);
552 3591e6db 2022-01-20 op uint8_t *data;
553 0e8f22ed 2021-09-12 op size_t len, chunk;
555 5b762f01 2021-07-24 op char *header;
557 5b762f01 2021-07-24 op if (!req->done_header) {
558 5b762f01 2021-07-24 op header = evbuffer_readln(src, &len, EVBUFFER_EOL_CRLF_STRICT);
559 5b762f01 2021-07-24 op if (header == NULL && EVBUFFER_LENGTH(src) >= 1024)
561 5b762f01 2021-07-24 op if (header == NULL)
563 5b762f01 2021-07-24 op r = gemini_parse_reply(req, header, len);
564 5b762f01 2021-07-24 op free(header);
565 0e49c9bb 2022-01-21 op req->done_header = 1;
568 0e49c9bb 2022-01-21 op else if (r < 20 || r >= 30)
569 0e49c9bb 2022-01-21 op close_conn(0, 0, req);
573 5b762f01 2021-07-24 op if ((len = EVBUFFER_LENGTH(src)) == 0)
575 5b762f01 2021-07-24 op data = EVBUFFER_DATA(src);
578 0e8f22ed 2021-09-12 op * Split data into chunks before sending. imsg can't handle
579 0e8f22ed 2021-09-12 op * message that are "too big".
581 0e8f22ed 2021-09-12 op while (len != 0) {
582 0e8f22ed 2021-09-12 op chunk = MIN(len, 4096);
583 0e8f22ed 2021-09-12 op net_send_ui(IMSG_BUF, req->id, data, chunk);
584 0e8f22ed 2021-09-12 op data += chunk;
585 0e8f22ed 2021-09-12 op len -= chunk;
588 0e8f22ed 2021-09-12 op evbuffer_drain(src, EVBUFFER_LENGTH(src));
592 5b762f01 2021-07-24 op (*bev->errorcb)(bev, EVBUFFER_READ, bev->cbarg);
595 5b762f01 2021-07-24 op /* called after a write has been done */
597 5b762f01 2021-07-24 op net_write(struct bufferevent *bev, void *d)
599 5b762f01 2021-07-24 op struct evbuffer *dst = EVBUFFER_OUTPUT(bev);
601 5b762f01 2021-07-24 op if (EVBUFFER_LENGTH(dst) == 0)
602 5b762f01 2021-07-24 op (*bev->errorcb)(bev, EVBUFFER_WRITE, bev->cbarg);
606 5b762f01 2021-07-24 op net_error(struct bufferevent *bev, short error, void *d)
608 c8dba1e6 2021-07-24 op struct req *req = d;
609 590c00b7 2021-07-25 op struct evbuffer *src;
611 5b762f01 2021-07-24 op if (error & EVBUFFER_TIMEOUT) {
612 5b762f01 2021-07-24 op close_with_err(req, "Timeout loading page");
616 5b762f01 2021-07-24 op if (error & EVBUFFER_ERROR) {
617 5b762f01 2021-07-24 op close_with_err(req, "buffer event error");
621 5b762f01 2021-07-24 op if (error & EVBUFFER_EOF) {
622 98cba69e 2021-11-10 op /* EOF and no header */
623 98cba69e 2021-11-10 op if (!req->done_header) {
624 98cba69e 2021-11-10 op close_with_err(req, "protocol error");
628 95a8c791 2021-08-26 op src = EVBUFFER_INPUT(req->bev);
629 590c00b7 2021-07-25 op if (EVBUFFER_LENGTH(src) != 0)
630 590c00b7 2021-07-25 op net_send_ui(IMSG_BUF, req->id, EVBUFFER_DATA(src),
631 590c00b7 2021-07-25 op EVBUFFER_LENGTH(src));
632 5b762f01 2021-07-24 op net_send_ui(IMSG_EOF, req->id, NULL, 0);
633 5b762f01 2021-07-24 op close_conn(0, 0, req);
637 5b762f01 2021-07-24 op if (error & EVBUFFER_WRITE) {
638 5b762f01 2021-07-24 op /* finished sending request */
639 5b762f01 2021-07-24 op bufferevent_disable(bev, EV_WRITE);
643 5b762f01 2021-07-24 op if (error & EVBUFFER_READ) {
644 5b762f01 2021-07-24 op close_with_err(req, "protocol error");
648 5b762f01 2021-07-24 op close_with_errf(req, "unknown event error %x", error);
652 c8dba1e6 2021-07-24 op handle_get_raw(struct imsg *imsg, size_t datalen)
654 c8dba1e6 2021-07-24 op struct req *req;
655 c8dba1e6 2021-07-24 op struct get_req *r;
657 c8dba1e6 2021-07-24 op r = imsg->data;
659 c8dba1e6 2021-07-24 op if (datalen != sizeof(*r))
662 c8dba1e6 2021-07-24 op if ((req = calloc(1, sizeof(*req))) == NULL)
665 c8dba1e6 2021-07-24 op req->id = imsg->hdr.peerid;
666 c8dba1e6 2021-07-24 op TAILQ_INSERT_HEAD(&reqhead, req, reqs);
668 c8dba1e6 2021-07-24 op strlcpy(req->url.host, r->host, sizeof(req->url.host));
669 c8dba1e6 2021-07-24 op strlcpy(req->url.port, r->port, sizeof(req->url.port));
671 5b762f01 2021-07-24 op strlcpy(req->req, r->req, sizeof(req->req));
672 5b762f01 2021-07-24 op req->len = strlen(r->req);
674 5fb52fc0 2021-07-25 op req->proto = r->proto;
676 4e28261d 2022-05-27 op conn_towards(req);
680 c8dba1e6 2021-07-24 op handle_cert_status(struct imsg *imsg, size_t datalen)
682 c8dba1e6 2021-07-24 op struct req *req;
685 c8dba1e6 2021-07-24 op req = req_by_id(imsg->hdr.peerid);
687 c8dba1e6 2021-07-24 op if (datalen < sizeof(is_ok))
689 c8dba1e6 2021-07-24 op memcpy(&is_ok, imsg->data, sizeof(is_ok));
692 5b762f01 2021-07-24 op net_ready(req);
694 c8dba1e6 2021-07-24 op close_conn(0, 0, req);
698 c8dba1e6 2021-07-24 op handle_proceed(struct imsg *imsg, size_t datalen)
700 5b762f01 2021-07-24 op struct req *req;
702 318a6c1a 2021-07-24 op if ((req = req_by_id(imsg->hdr.peerid)) == NULL)
705 5b762f01 2021-07-24 op bufferevent_enable(req->bev, EV_READ);
709 c8dba1e6 2021-07-24 op handle_stop(struct imsg *imsg, size_t datalen)
711 c8dba1e6 2021-07-24 op struct req *req;
713 318a6c1a 2021-07-24 op if ((req = req_by_id(imsg->hdr.peerid)) == NULL)
715 c8dba1e6 2021-07-24 op close_conn(0, 0, req);
719 c8dba1e6 2021-07-24 op handle_quit(struct imsg *imsg, size_t datalen)
721 c8dba1e6 2021-07-24 op event_loopbreak();
725 c8dba1e6 2021-07-24 op handle_dispatch_imsg(int fd, short ev, void *d)
727 c8dba1e6 2021-07-24 op struct imsgev *iev = d;
729 c8dba1e6 2021-07-24 op if (dispatch_imsg(iev, ev, handlers, sizeof(handlers)) == -1)
730 c8dba1e6 2021-07-24 op err(1, "connection closed");
734 c8dba1e6 2021-07-24 op net_send_ui(int type, uint32_t peerid, const void *data,
735 c8dba1e6 2021-07-24 op uint16_t datalen)
737 c8dba1e6 2021-07-24 op return imsg_compose_event(iev_ui, type, peerid, 0, -1,
738 c8dba1e6 2021-07-24 op data, datalen);
742 f45bd2e3 2021-07-24 op net_main(void)
744 c8dba1e6 2021-07-24 op setproctitle("net");
746 c8dba1e6 2021-07-24 op TAILQ_INIT(&reqhead);
748 c8dba1e6 2021-07-24 op event_init();
750 c8dba1e6 2021-07-24 op /* Setup pipe and event handler to the main process */
751 c8dba1e6 2021-07-24 op if ((iev_ui = malloc(sizeof(*iev_ui))) == NULL)
753 c8dba1e6 2021-07-24 op imsg_init(&iev_ui->ibuf, 3);
754 c8dba1e6 2021-07-24 op iev_ui->handler = handle_dispatch_imsg;
755 c8dba1e6 2021-07-24 op iev_ui->events = EV_READ;
756 c8dba1e6 2021-07-24 op event_set(&iev_ui->ev, iev_ui->ibuf.fd, iev_ui->events,
757 c8dba1e6 2021-07-24 op iev_ui->handler, iev_ui);
758 c8dba1e6 2021-07-24 op event_add(&iev_ui->ev, NULL);
760 c8dba1e6 2021-07-24 op sandbox_net_process();
762 c8dba1e6 2021-07-24 op event_dispatch();
764 74c0f6ba 2021-07-24 op msgbuf_clear(&iev_ui->ibuf.w);
765 74c0f6ba 2021-07-24 op close(iev_ui->ibuf.fd);
766 74c0f6ba 2021-07-24 op free(iev_ui);