5 #include <libubox/ustream.h>
6 #include <libubox/ustream-ssl.h>
7 #include <libubox/usock.h>
8 #include <libubox/blobmsg.h>
11 #include "uclient-utils.h"
12 #include "uclient-backend.h"
14 static struct ustream_ssl_ctx *ssl_ctx;
31 HTTP_STATE_HEADERS_SENT,
32 HTTP_STATE_REQUEST_DONE,
33 HTTP_STATE_RECV_HEADERS,
38 static const char * const request_types[__REQ_MAX] = {
49 struct ustream_fd ufd;
50 struct ustream_ssl ussl;
54 bool connection_close;
55 enum request_type req_type;
56 enum http_state state;
58 enum auth_type auth_type;
64 struct blob_buf headers;
74 static const char * const uclient_http_prefix[] = {
75 [PREFIX_HTTP] = "http://",
76 [PREFIX_HTTPS] = "https://",
80 static int uclient_do_connect(struct uclient_http *uh, const char *port)
85 port = uh->uc.url->port;
87 fd = usock(USOCK_TCP | USOCK_NONBLOCK, uh->uc.url->host, port);
91 ustream_fd_init(&uh->ufd, fd);
95 static void uclient_http_disconnect(struct uclient_http *uh)
101 ustream_free(&uh->ussl.stream);
102 ustream_free(&uh->ufd.stream);
103 close(uh->ufd.fd.fd);
107 static void uclient_http_free_url_state(struct uclient *cl)
109 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
111 uh->auth_type = AUTH_TYPE_UNKNOWN;
114 uclient_http_disconnect(uh);
117 static void uclient_notify_eof(struct uclient_http *uh)
119 struct ustream *us = uh->us;
122 if (!us->eof && !us->write_error)
125 if (ustream_pending_data(us, false))
129 uclient_backend_set_eof(&uh->uc);
131 if (uh->connection_close)
132 uclient_http_disconnect(uh);
135 static void uclient_http_reset_state(struct uclient_http *uh)
137 uclient_backend_reset_state(&uh->uc);
138 uh->read_chunked = -1;
139 uh->content_length = -1;
141 uh->connection_close = false;
142 uh->state = HTTP_STATE_INIT;
144 if (uh->auth_type == AUTH_TYPE_UNKNOWN && !uh->uc.url->auth)
145 uh->auth_type = AUTH_TYPE_NONE;
148 static void uclient_http_init_request(struct uclient_http *uh)
150 uclient_http_reset_state(uh);
151 blob_buf_init(&uh->meta, 0);
154 static enum auth_type
155 uclient_http_update_auth_type(struct uclient_http *uh)
158 return AUTH_TYPE_NONE;
160 if (!strncasecmp(uh->auth_str, "basic", 5))
161 return AUTH_TYPE_BASIC;
163 return AUTH_TYPE_NONE;
166 static void uclient_http_process_headers(struct uclient_http *uh)
169 HTTP_HDR_TRANSFER_ENCODING,
171 HTTP_HDR_CONTENT_LENGTH,
175 static const struct blobmsg_policy hdr_policy[__HTTP_HDR_MAX] = {
176 #define hdr(_name) { .name = _name, .type = BLOBMSG_TYPE_STRING }
177 [HTTP_HDR_TRANSFER_ENCODING] = hdr("transfer-encoding"),
178 [HTTP_HDR_CONNECTION] = hdr("connection"),
179 [HTTP_HDR_CONTENT_LENGTH] = hdr("content-length"),
180 [HTTP_HDR_AUTH] = hdr("www-authenticate"),
183 struct blob_attr *tb[__HTTP_HDR_MAX];
184 struct blob_attr *cur;
186 blobmsg_parse(hdr_policy, __HTTP_HDR_MAX, tb, blob_data(uh->meta.head), blob_len(uh->meta.head));
188 cur = tb[HTTP_HDR_TRANSFER_ENCODING];
189 if (cur && strstr(blobmsg_data(cur), "chunked"))
190 uh->read_chunked = 0;
192 cur = tb[HTTP_HDR_CONNECTION];
193 if (cur && strstr(blobmsg_data(cur), "close"))
194 uh->connection_close = true;
196 cur = tb[HTTP_HDR_CONTENT_LENGTH];
198 uh->content_length = strtoul(blobmsg_data(cur), NULL, 10);
200 cur = tb[HTTP_HDR_AUTH];
203 uh->auth_str = strdup(blobmsg_data(cur));
206 uh->auth_type = uclient_http_update_auth_type(uh);
210 uclient_http_add_auth_header(struct uclient_http *uh)
212 struct uclient_url *url = uh->uc.url;
219 auth_len = strlen(url->auth);
223 auth_buf = alloca(base64_len(auth_len) + 1);
224 base64_encode(url->auth, auth_len, auth_buf);
225 ustream_printf(uh->us, "Authorization: Basic %s\r\n", auth_buf);
229 uclient_http_send_headers(struct uclient_http *uh)
231 struct uclient_url *url = uh->uc.url;
232 struct blob_attr *cur;
233 enum request_type req_type = uh->req_type;
236 if (uh->state >= HTTP_STATE_HEADERS_SENT)
239 if (uh->auth_type == AUTH_TYPE_UNKNOWN)
242 ustream_printf(uh->us,
243 "%s /%s HTTP/1.1\r\n"
245 request_types[req_type],
246 url->location, url->host);
248 blobmsg_for_each_attr(cur, uh->headers.head, rem)
249 ustream_printf(uh->us, "%s: %s\n", blobmsg_name(cur), (char *) blobmsg_data(cur));
251 if (uh->req_type == REQ_POST)
252 ustream_printf(uh->us, "Transfer-Encoding: chunked\r\n");
254 uclient_http_add_auth_header(uh);
256 ustream_printf(uh->us, "\r\n");
259 static void uclient_http_headers_complete(struct uclient_http *uh)
261 enum auth_type auth_type = uh->auth_type;
263 uh->state = HTTP_STATE_RECV_DATA;
264 uh->uc.meta = uh->meta.head;
265 uclient_http_process_headers(uh);
267 if (auth_type == AUTH_TYPE_UNKNOWN) {
268 uclient_http_init_request(uh);
269 uclient_http_send_headers(uh);
270 uh->state = HTTP_STATE_REQUEST_DONE;
274 if (uh->uc.cb->header_done)
275 uh->uc.cb->header_done(&uh->uc);
277 if (uh->req_type == REQ_HEAD) {
279 uclient_notify_eof(uh);
283 static void uclient_parse_http_line(struct uclient_http *uh, char *data)
288 if (uh->state == HTTP_STATE_REQUEST_DONE) {
289 uh->state = HTTP_STATE_RECV_HEADERS;
294 uclient_http_headers_complete(uh);
298 sep = strchr(data, ':');
304 for (name = data; *name; name++)
305 *name = tolower(*name);
308 while (isspace(*sep))
311 blobmsg_add_string(&uh->meta, name, sep);
314 static void __uclient_notify_read(struct uclient_http *uh)
316 struct uclient *uc = &uh->uc;
320 if (uh->state < HTTP_STATE_REQUEST_DONE)
323 data = ustream_get_read_buf(uh->us, &len);
327 if (uh->state < HTTP_STATE_RECV_DATA) {
332 sep = strstr(data, "\r\n");
336 /* Check for multi-line HTTP headers */
341 if (isspace(sep[2]) && sep[2] != '\r') {
349 cur_len = sep + 2 - data;
350 uclient_parse_http_line(uh, data);
351 ustream_consume(uh->us, cur_len);
354 data = ustream_get_read_buf(uh->us, &len);
355 } while (data && uh->state < HTTP_STATE_RECV_DATA);
361 if (uh->state == HTTP_STATE_RECV_DATA && uc->cb->data_read)
362 uc->cb->data_read(uc);
365 static void uclient_notify_read(struct ustream *us, int bytes)
367 struct uclient_http *uh = container_of(us, struct uclient_http, ufd.stream);
369 __uclient_notify_read(uh);
372 static void uclient_notify_state(struct ustream *us)
374 struct uclient_http *uh = container_of(us, struct uclient_http, ufd.stream);
376 uclient_notify_eof(uh);
379 static int uclient_setup_http(struct uclient_http *uh)
381 struct ustream *us = &uh->ufd.stream;
385 us->string_data = true;
386 us->notify_state = uclient_notify_state;
387 us->notify_read = uclient_notify_read;
389 ret = uclient_do_connect(uh, "80");
396 static void uclient_ssl_notify_read(struct ustream *us, int bytes)
398 struct uclient_http *uh = container_of(us, struct uclient_http, ussl.stream);
400 __uclient_notify_read(uh);
403 static void uclient_ssl_notify_state(struct ustream *us)
405 struct uclient_http *uh = container_of(us, struct uclient_http, ussl.stream);
407 uclient_notify_eof(uh);
410 static int uclient_setup_https(struct uclient_http *uh)
412 struct ustream *us = &uh->ussl.stream;
418 ret = uclient_do_connect(uh, "443");
423 ssl_ctx = ustream_ssl_context_new(false);
425 us->string_data = true;
426 us->notify_state = uclient_ssl_notify_state;
427 us->notify_read = uclient_ssl_notify_read;
428 ustream_ssl_init(&uh->ussl, &uh->ufd.stream, ssl_ctx, false);
433 static int uclient_http_connect(struct uclient *cl)
435 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
437 uclient_http_init_request(uh);
442 uh->ssl = cl->url->prefix == PREFIX_HTTPS;
445 return uclient_setup_https(uh);
447 return uclient_setup_http(uh);
450 static struct uclient *uclient_http_alloc(void)
452 struct uclient_http *uh;
454 uh = calloc_a(sizeof(*uh));
455 blob_buf_init(&uh->headers, 0);
460 static void uclient_http_free(struct uclient *cl)
462 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
464 uclient_http_free_url_state(cl);
465 blob_buf_free(&uh->headers);
466 blob_buf_free(&uh->meta);
471 uclient_http_set_request_type(struct uclient *cl, const char *type)
473 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
476 if (cl->backend != &uclient_backend_http)
479 if (uh->state > HTTP_STATE_INIT)
482 for (i = 0; i < ARRAY_SIZE(request_types); i++) {
483 if (strcmp(request_types[i], type) != 0)
494 uclient_http_reset_headers(struct uclient *cl, const char *name, const char *value)
496 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
498 blob_buf_init(&uh->headers, 0);
504 uclient_http_set_header(struct uclient *cl, const char *name, const char *value)
506 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
508 if (cl->backend != &uclient_backend_http)
511 if (uh->state > HTTP_STATE_INIT)
514 blobmsg_add_string(&uh->headers, name, value);
519 uclient_http_send_data(struct uclient *cl, char *buf, unsigned int len)
521 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
523 if (uh->state >= HTTP_STATE_REQUEST_DONE)
526 uclient_http_send_headers(uh);
528 ustream_printf(uh->us, "%X\r\n", len);
529 ustream_write(uh->us, buf, len, false);
530 ustream_printf(uh->us, "\r\n");
536 uclient_http_request_done(struct uclient *cl)
538 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
540 if (uh->state >= HTTP_STATE_REQUEST_DONE)
543 uclient_http_send_headers(uh);
544 uh->state = HTTP_STATE_REQUEST_DONE;
550 uclient_http_read(struct uclient *cl, char *buf, unsigned int len)
552 struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
554 char *data, *data_end;
556 if (uh->state < HTTP_STATE_RECV_DATA || !uh->us)
559 data = ustream_get_read_buf(uh->us, &read_len);
560 if (!data || !read_len)
563 data_end = data + read_len;
566 if (uh->read_chunked == 0) {
569 if (data[0] == '\r' && data[1] == '\n') {
574 sep = strstr(data, "\r\n");
579 uh->read_chunked = strtoul(data, NULL, 16);
581 read_len += sep + 2 - data;
584 if (!uh->read_chunked)
588 if (len > data_end - data)
589 len = data_end - data;
591 if (uh->read_chunked >= 0) {
592 if (len > uh->read_chunked)
593 len = uh->read_chunked;
595 uh->read_chunked -= len;
596 } else if (uh->content_length >= 0) {
597 if (len > uh->content_length)
598 len = uh->content_length;
600 uh->content_length -= len;
601 if (!uh->content_length)
607 memcpy(buf, data, len);
611 ustream_consume(uh->us, read_len);
613 uclient_notify_eof(uh);
618 const struct uclient_backend uclient_backend_http __hidden = {
619 .prefix = uclient_http_prefix,
621 .alloc = uclient_http_alloc,
622 .free = uclient_http_free,
623 .connect = uclient_http_connect,
624 .update_url = uclient_http_free_url_state,
626 .read = uclient_http_read,
627 .write = uclient_http_send_data,
628 .request = uclient_http_request_done,