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
);
137 if (uh
->req_type
== REQ_HEAD
) {
139 uclient_notify_eof(uh
);
145 sep
= strchr(data
, ':');
151 for (name
= data
; *name
; name
++)
152 *name
= tolower(*name
);
155 while (isspace(*sep
))
158 blobmsg_add_string(&uh
->meta
, name
, sep
);
161 static void __uclient_notify_read(struct uclient_http
*uh
)
163 struct uclient
*uc
= &uh
->uc
;
167 if (uh
->state
< HTTP_STATE_REQUEST_DONE
)
170 data
= ustream_get_read_buf(uh
->us
, &len
);
174 if (uh
->state
< HTTP_STATE_RECV_DATA
) {
179 sep
= strstr(data
, "\r\n");
183 /* Check for multi-line HTTP headers */
188 if (isspace(sep
[2]) && sep
[2] != '\r') {
196 cur_len
= sep
+ 2 - data
;
197 uclient_parse_http_line(uh
, data
);
198 ustream_consume(uh
->us
, cur_len
);
201 data
= ustream_get_read_buf(uh
->us
, &len
);
202 } while (uh
->state
< HTTP_STATE_RECV_DATA
);
208 if (uh
->state
== HTTP_STATE_RECV_DATA
&& uc
->cb
->data_read
)
209 uc
->cb
->data_read(uc
);
212 static void uclient_notify_read(struct ustream
*us
, int bytes
)
214 struct uclient_http
*uh
= container_of(us
, struct uclient_http
, ufd
.stream
);
216 __uclient_notify_read(uh
);
219 static void uclient_notify_state(struct ustream
*us
)
221 struct uclient_http
*uh
= container_of(us
, struct uclient_http
, ufd
.stream
);
223 uclient_notify_eof(uh
);
226 static int uclient_setup_http(struct uclient_http
*uh
)
228 struct ustream
*us
= &uh
->ufd
.stream
;
232 us
->string_data
= true;
233 us
->notify_state
= uclient_notify_state
;
234 us
->notify_read
= uclient_notify_read
;
236 ret
= uclient_do_connect(uh
, "80");
243 static void uclient_ssl_notify_read(struct ustream
*us
, int bytes
)
245 struct uclient_http
*uh
= container_of(us
, struct uclient_http
, ussl
.stream
);
247 __uclient_notify_read(uh
);
250 static void uclient_ssl_notify_state(struct ustream
*us
)
252 struct uclient_http
*uh
= container_of(us
, struct uclient_http
, ussl
.stream
);
254 uclient_notify_eof(uh
);
257 static int uclient_setup_https(struct uclient_http
*uh
)
259 struct ustream
*us
= &uh
->ussl
.stream
;
265 ret
= uclient_do_connect(uh
, "443");
270 ssl_ctx
= ustream_ssl_context_new(false);
272 us
->string_data
= true;
273 us
->notify_state
= uclient_ssl_notify_state
;
274 us
->notify_read
= uclient_ssl_notify_read
;
275 ustream_ssl_init(&uh
->ussl
, &uh
->ufd
.stream
, ssl_ctx
, false);
280 static void uclient_http_disconnect(struct uclient_http
*uh
)
282 uclient_backend_reset_state(&uh
->uc
);
283 uh
->read_chunked
= -1;
290 ustream_free(&uh
->ussl
.stream
);
291 ustream_free(&uh
->ufd
.stream
);
292 close(uh
->ufd
.fd
.fd
);
296 static int uclient_http_connect(struct uclient
*cl
)
298 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
300 uclient_http_disconnect(uh
);
301 blob_buf_init(&uh
->meta
, 0);
303 uh
->ssl
= cl
->url
->prefix
== PREFIX_HTTPS
;
304 uh
->state
= HTTP_STATE_INIT
;
307 return uclient_setup_https(uh
);
309 return uclient_setup_http(uh
);
312 static struct uclient
*uclient_http_alloc(void)
314 struct uclient_http
*uh
;
316 uh
= calloc_a(sizeof(*uh
));
317 blob_buf_init(&uh
->headers
, 0);
322 static void uclient_http_free(struct uclient
*cl
)
324 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
326 uclient_http_disconnect(uh
);
327 blob_buf_free(&uh
->headers
);
328 blob_buf_free(&uh
->meta
);
333 uclient_http_set_request_type(struct uclient
*cl
, const char *type
)
335 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
338 if (cl
->backend
!= &uclient_backend_http
)
341 if (uh
->state
> HTTP_STATE_INIT
)
344 for (i
= 0; i
< ARRAY_SIZE(request_types
); i
++) {
345 if (strcmp(request_types
[i
], type
) != 0)
356 uclient_http_reset_headers(struct uclient
*cl
, const char *name
, const char *value
)
358 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
360 blob_buf_init(&uh
->headers
, 0);
366 uclient_http_set_header(struct uclient
*cl
, const char *name
, const char *value
)
368 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
370 if (cl
->backend
!= &uclient_backend_http
)
373 if (uh
->state
> HTTP_STATE_INIT
)
376 blobmsg_add_string(&uh
->headers
, name
, value
);
381 uclient_http_send_headers(struct uclient_http
*uh
)
383 struct uclient_url
*url
= uh
->uc
.url
;
384 struct blob_attr
*cur
;
387 if (uh
->state
>= HTTP_STATE_HEADERS_SENT
)
390 ustream_printf(uh
->us
,
391 "%s /%s HTTP/1.1\r\n"
393 "Connection: close\r\n",
394 request_types
[uh
->req_type
],
395 url
->location
, url
->host
);
397 blobmsg_for_each_attr(cur
, uh
->headers
.head
, rem
)
398 ustream_printf(uh
->us
, "%s: %s\n", blobmsg_name(cur
), (char *) blobmsg_data(cur
));
401 int auth_len
= strlen(url
->auth
);
407 auth_buf
= alloca(base64_len(auth_len
) + 1);
408 base64_encode(url
->auth
, auth_len
, auth_buf
);
409 ustream_printf(uh
->us
, "Authorization: Basic %s\r\n", auth_buf
);
412 if (uh
->req_type
== REQ_POST
)
413 ustream_printf(uh
->us
, "Transfer-Encoding: chunked\r\n");
415 ustream_printf(uh
->us
, "\r\n");
419 uclient_http_send_data(struct uclient
*cl
, char *buf
, unsigned int len
)
421 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
423 if (uh
->state
>= HTTP_STATE_REQUEST_DONE
)
426 uclient_http_send_headers(uh
);
428 ustream_printf(uh
->us
, "%X\r\n", len
);
429 ustream_write(uh
->us
, buf
, len
, false);
430 ustream_printf(uh
->us
, "\r\n");
436 uclient_http_request_done(struct uclient
*cl
)
438 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
440 if (uh
->state
>= HTTP_STATE_REQUEST_DONE
)
443 uclient_http_send_headers(uh
);
444 uh
->state
= HTTP_STATE_REQUEST_DONE
;
450 uclient_http_read(struct uclient
*cl
, char *buf
, unsigned int len
)
452 struct uclient_http
*uh
= container_of(cl
, struct uclient_http
, uc
);
454 char *data
, *data_end
;
456 if (uh
->state
< HTTP_STATE_RECV_DATA
)
459 data
= ustream_get_read_buf(uh
->us
, &read_len
);
460 if (!data
|| !read_len
)
463 data_end
= data
+ read_len
;
466 if (uh
->read_chunked
== 0) {
469 if (data
[0] == '\r' && data
[1] == '\n') {
474 sep
= strstr(data
, "\r\n");
479 uh
->read_chunked
= strtoul(data
, NULL
, 16);
481 read_len
+= sep
+ 2 - data
;
484 if (!uh
->read_chunked
)
488 if (len
> data_end
- data
)
489 len
= data_end
- data
;
491 if (uh
->read_chunked
>= 0) {
492 if (len
> uh
->read_chunked
)
493 len
= uh
->read_chunked
;
495 uh
->read_chunked
-= len
;
500 memcpy(buf
, data
, len
);
504 ustream_consume(uh
->us
, read_len
);
506 uclient_notify_eof(uh
);
511 const struct uclient_backend uclient_backend_http __hidden
= {
512 .prefix
= uclient_http_prefix
,
514 .alloc
= uclient_http_alloc
,
515 .free
= uclient_http_free
,
516 .connect
= uclient_http_connect
,
518 .read
= uclient_http_read
,
519 .write
= uclient_http_send_data
,
520 .request
= uclient_http_request_done
,