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
;
25 HTTP_STATE_HEADERS_SENT
,
26 HTTP_STATE_REQUEST_DONE
,
27 HTTP_STATE_RECV_HEADERS
,
32 static const char * const request_types
[__REQ_MAX
] = {
43 struct ustream_fd ufd
;
44 struct ustream_ssl ussl
;
48 enum request_type req_type
;
49 enum http_state state
;
53 struct blob_buf headers
;
63 static const char * const uclient_http_prefix
[] = {
64 [PREFIX_HTTP
] = "http://",
65 [PREFIX_HTTPS
] = "https://",
69 static int uclient_do_connect(struct uclient_http
*uh
, const char *port
)
74 port
= uh
->uc
.url
->port
;
76 fd
= usock(USOCK_TCP
| USOCK_NONBLOCK
, uh
->uc
.url
->host
, port
);
80 ustream_fd_init(&uh
->ufd
, fd
);
84 static void uclient_notify_eof(struct uclient_http
*uh
)
86 struct ustream
*us
= uh
->us
;
89 if (!us
->eof
&& !us
->write_error
)
92 if (ustream_pending_data(us
, false))
96 uclient_backend_set_eof(&uh
->uc
);
99 static void uclient_http_process_headers(struct uclient_http
*uh
)
102 HTTP_HDR_TRANSFER_ENCODING
,
105 static const struct blobmsg_policy hdr_policy
[__HTTP_HDR_MAX
] = {
106 #define hdr(_name) { .name = _name, .type = BLOBMSG_TYPE_STRING }
107 [HTTP_HDR_TRANSFER_ENCODING
] = hdr("transfer-encoding"),
110 struct blob_attr
*tb
[__HTTP_HDR_MAX
];
111 struct blob_attr
*cur
;
113 blobmsg_parse(hdr_policy
, __HTTP_HDR_MAX
, tb
, blob_data(uh
->meta
.head
), blob_len(uh
->meta
.head
));
115 cur
= tb
[HTTP_HDR_TRANSFER_ENCODING
];
116 if (cur
&& strstr(blobmsg_data(cur
), "chunked"))
117 uh
->read_chunked
= 0;
120 static void uclient_parse_http_line(struct uclient_http
*uh
, char *data
)
125 if (uh
->state
== HTTP_STATE_REQUEST_DONE
) {
126 uh
->state
= HTTP_STATE_RECV_HEADERS
;
131 uh
->state
= HTTP_STATE_RECV_DATA
;
132 uh
->uc
.meta
= uh
->meta
.head
;
133 uclient_http_process_headers(uh
);
134 if (uh
->uc
.cb
->header_done
)
135 uh
->uc
.cb
->header_done(&uh
->uc
);
139 sep
= strchr(data
, ':');
145 for (name
= data
; *name
; name
++)
146 *name
= tolower(*name
);
149 while (isspace(*sep
))
152 blobmsg_add_string(&uh
->meta
, name
, sep
);
155 static void __uclient_notify_read(struct uclient_http
*uh
)
157 struct uclient
*uc
= &uh
->uc
;
161 if (uh
->state
< HTTP_STATE_REQUEST_DONE
)
164 data
= ustream_get_read_buf(uh
->us
, &len
);
168 if (uh
->state
< HTTP_STATE_RECV_DATA
) {
173 sep
= strstr(data
, "\r\n");
177 /* Check for multi-line HTTP headers */
182 if (isspace(sep
[2]) && sep
[2] != '\r') {
190 cur_len
= sep
+ 2 - data
;
191 uclient_parse_http_line(uh
, data
);
192 ustream_consume(uh
->us
, cur_len
);
195 data
= ustream_get_read_buf(uh
->us
, &len
);
196 } while (uh
->state
< HTTP_STATE_RECV_DATA
);
202 if (uh
->state
== HTTP_STATE_RECV_DATA
&& uc
->cb
->data_read
)
203 uc
->cb
->data_read(uc
);
206 static void uclient_notify_read(struct ustream
*us
, int bytes
)
208 struct uclient_http
*uh
= container_of(us
, struct uclient_http
, ufd
.stream
);
210 __uclient_notify_read(uh
);
213 static void uclient_notify_state(struct ustream
*us
)
215 struct uclient_http
*uh
= container_of(us
, struct uclient_http
, ufd
.stream
);
217 uclient_notify_eof(uh
);
220 static int uclient_setup_http(struct uclient_http
*uh
)
222 struct ustream
*us
= &uh
->ufd
.stream
;
226 us
->string_data
= true;
227 us
->notify_state
= uclient_notify_state
;
228 us
->notify_read
= uclient_notify_read
;
230 ret
= uclient_do_connect(uh
, "80");
237 static void uclient_ssl_notify_read(struct ustream
*us
, int bytes
)
239 struct uclient_http
*uh
= container_of(us
, struct uclient_http
, ussl
.stream
);
241 __uclient_notify_read(uh
);
244 static void uclient_ssl_notify_state(struct ustream
*us
)
246 struct uclient_http
*uh
= container_of(us
, struct uclient_http
, ussl
.stream
);
248 uclient_notify_eof(uh
);
251 static int uclient_setup_https(struct uclient_http
*uh
)
253 struct ustream
*us
= &uh
->ussl
.stream
;
259 ret
= uclient_do_connect(uh
, "443");
264 ssl_ctx
= ustream_ssl_context_new(false);
266 us
->string_data
= true;
267 us
->notify_state
= uclient_ssl_notify_state
;
268 us
->notify_read
= uclient_ssl_notify_read
;
269 ustream_ssl_init(&uh
->ussl
, &uh
->ufd
.stream
, ssl_ctx
, false);
274 static void uclient_http_disconnect(struct uclient_http
*uh
)
276 uclient_backend_reset_state(&uh
->uc
);
277 uh
->read_chunked
= -1;
284 ustream_free(&uh
->ussl
.stream
);
285 ustream_free(&uh
->ufd
.stream
);
286 close(uh
->ufd
.fd
.fd
);
290 static int uclient_http_connect(struct uclient
*cl
)
292 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
294 uclient_http_disconnect(uh
);
295 blob_buf_init(&uh
->meta
, 0);
297 uh
->ssl
= cl
->url
->prefix
== PREFIX_HTTPS
;
298 uh
->state
= HTTP_STATE_INIT
;
301 return uclient_setup_https(uh
);
303 return uclient_setup_http(uh
);
306 static struct uclient
*uclient_http_alloc(void)
308 struct uclient_http
*uh
;
310 uh
= calloc_a(sizeof(*uh
));
311 blob_buf_init(&uh
->headers
, 0);
316 static void uclient_http_free(struct uclient
*cl
)
318 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
320 uclient_http_disconnect(uh
);
321 blob_buf_free(&uh
->headers
);
322 blob_buf_free(&uh
->meta
);
327 uclient_http_set_request_type(struct uclient
*cl
, const char *type
)
329 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
332 if (cl
->backend
!= &uclient_backend_http
)
335 if (uh
->state
> HTTP_STATE_INIT
)
338 for (i
= 0; i
< ARRAY_SIZE(request_types
); i
++) {
339 if (strcmp(request_types
[i
], type
) != 0)
350 uclient_http_reset_headers(struct uclient
*cl
, const char *name
, const char *value
)
352 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
354 blob_buf_init(&uh
->headers
, 0);
360 uclient_http_set_header(struct uclient
*cl
, const char *name
, const char *value
)
362 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
364 if (cl
->backend
!= &uclient_backend_http
)
367 if (uh
->state
> HTTP_STATE_INIT
)
370 blobmsg_add_string(&uh
->headers
, name
, value
);
375 uclient_http_send_headers(struct uclient_http
*uh
)
377 struct uclient_url
*url
= uh
->uc
.url
;
378 struct blob_attr
*cur
;
381 if (uh
->state
>= HTTP_STATE_HEADERS_SENT
)
384 ustream_printf(uh
->us
,
385 "%s /%s HTTP/1.1\r\n"
387 "Connection: close\r\n",
388 request_types
[uh
->req_type
],
389 url
->location
, url
->host
);
391 blobmsg_for_each_attr(cur
, uh
->headers
.head
, rem
)
392 ustream_printf(uh
->us
, "%s: %s\n", blobmsg_name(cur
), (char *) blobmsg_data(cur
));
395 int auth_len
= strlen(url
->auth
);
401 auth_buf
= alloca(base64_len(auth_len
) + 1);
402 base64_encode(url
->auth
, auth_len
, auth_buf
);
403 ustream_printf(uh
->us
, "Authorization: Basic %s\r\n", auth_buf
);
406 if (uh
->req_type
== REQ_POST
)
407 ustream_printf(uh
->us
, "Transfer-Encoding: chunked\r\n");
409 ustream_printf(uh
->us
, "\r\n");
413 uclient_http_send_data(struct uclient
*cl
, char *buf
, unsigned int len
)
415 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
417 if (uh
->state
>= HTTP_STATE_REQUEST_DONE
)
420 uclient_http_send_headers(uh
);
422 ustream_printf(uh
->us
, "%X\r\n", len
);
423 ustream_write(uh
->us
, buf
, len
, false);
424 ustream_printf(uh
->us
, "\r\n");
430 uclient_http_request_done(struct uclient
*cl
)
432 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
434 if (uh
->state
>= HTTP_STATE_REQUEST_DONE
)
437 uclient_http_send_headers(uh
);
438 uh
->state
= HTTP_STATE_REQUEST_DONE
;
444 uclient_http_read(struct uclient
*cl
, char *buf
, unsigned int len
)
446 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
448 char *data
, *data_end
;
450 if (uh
->state
< HTTP_STATE_RECV_DATA
)
453 data
= ustream_get_read_buf(uh
->us
, &read_len
);
454 if (!data
|| !read_len
)
457 data_end
= data
+ read_len
;
460 if (uh
->read_chunked
== 0) {
463 if (data
[0] == '\r' && data
[1] == '\n') {
468 sep
= strstr(data
, "\r\n");
473 uh
->read_chunked
= strtoul(data
, NULL
, 16);
475 read_len
+= sep
+ 2 - data
;
478 if (!uh
->read_chunked
)
482 if (len
> data_end
- data
)
483 len
= data_end
- data
;
485 if (uh
->read_chunked
>= 0) {
486 if (len
> uh
->read_chunked
)
487 len
= uh
->read_chunked
;
489 uh
->read_chunked
-= len
;
494 memcpy(buf
, data
, len
);
498 ustream_consume(uh
->us
, read_len
);
500 uclient_notify_eof(uh
);
505 const struct uclient_backend uclient_backend_http __hidden
= {
506 .prefix
= uclient_http_prefix
,
508 .alloc
= uclient_http_alloc
,
509 .free
= uclient_http_free
,
510 .connect
= uclient_http_connect
,
512 .read
= uclient_http_read
,
513 .write
= uclient_http_send_data
,
514 .request
= uclient_http_request_done
,