2 * uclient - ustream based protocol client library
4 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <arpa/inet.h>
19 #include <libubox/ustream-ssl.h>
21 #include "uclient-utils.h"
22 #include "uclient-backend.h"
24 char *uclient_get_addr(char *dest
, int *port
, union uclient_addr
*a
)
29 switch(a
->sa
.sa_family
) {
31 ptr
= &a
->sin
.sin_addr
;
32 portval
= a
->sin
.sin_port
;
35 ptr
= &a
->sin6
.sin6_addr
;
36 portval
= a
->sin6
.sin6_port
;
39 return strcpy(dest
, "Unknown");
42 inet_ntop(a
->sa
.sa_family
, ptr
, dest
, INET6_ADDRSTRLEN
);
44 *port
= ntohs(portval
);
49 static struct uclient_url
*
50 __uclient_get_url(const struct uclient_backend
*backend
,
51 const char *host
, int host_len
,
52 const char *location
, const char *auth_str
)
54 struct uclient_url
*url
;
55 char *host_buf
, *uri_buf
, *auth_buf
, *next
;
57 url
= calloc_a(sizeof(*url
),
58 &host_buf
, host_len
+ 1,
59 &uri_buf
, strlen(location
) + 1,
60 &auth_buf
, auth_str
? strlen(auth_str
) + 1 : 0);
62 url
->backend
= backend
;
63 url
->location
= strcpy(uri_buf
, location
);
65 url
->host
= strncpy(host_buf
, host
, host_len
);
67 next
= strchr(host_buf
, '@');
72 if (uclient_urldecode(host_buf
, host_buf
, false) < 0)
78 if (!url
->auth
&& auth_str
)
79 url
->auth
= strcpy(auth_buf
, auth_str
);
81 /* Literal IPv6 address */
82 if (*url
->host
== '[') {
84 next
= strrchr(url
->host
, ']');
92 next
= strrchr(url
->host
, ':');
107 uclient_split_host(const char *base
, int *host_len
)
109 char *next
, *location
;
111 next
= strchr(base
, '/');
114 *host_len
= next
- base
;
117 *host_len
= strlen(base
);
123 struct uclient_url __hidden
*
124 uclient_get_url(const char *url_str
, const char *auth_str
)
126 static const struct uclient_backend
*backends
[] = {
127 &uclient_backend_http
,
130 const struct uclient_backend
*backend
;
131 const char * const *prefix
= NULL
;
132 struct uclient_url
*url
;
133 const char *location
;
137 for (i
= 0; i
< ARRAY_SIZE(backends
); i
++) {
140 for (prefix
= backends
[i
]->prefix
; *prefix
; prefix
++) {
141 prefix_len
= strlen(*prefix
);
143 if (!strncmp(url_str
, *prefix
, prefix_len
))
150 url_str
+= prefix_len
;
151 backend
= backends
[i
];
158 location
= uclient_split_host(url_str
, &host_len
);
159 url
= __uclient_get_url(backend
, url_str
, host_len
, location
, auth_str
);
163 url
->prefix
= prefix
- backend
->prefix
;
167 static void uclient_connection_timeout(struct uloop_timeout
*timeout
)
169 struct uclient
*cl
= container_of(timeout
, struct uclient
, connection_timeout
);
171 if (cl
->backend
->disconnect
)
172 cl
->backend
->disconnect(cl
);
174 uclient_backend_set_error(cl
, UCLIENT_ERROR_TIMEDOUT
);
177 struct uclient
*uclient_new(const char *url_str
, const char *auth_str
, const struct uclient_cb
*cb
)
180 struct uclient_url
*url
;
182 url
= uclient_get_url(url_str
, auth_str
);
186 cl
= url
->backend
->alloc();
190 cl
->backend
= url
->backend
;
193 cl
->timeout_msecs
= UCLIENT_DEFAULT_TIMEOUT_MS
;
194 cl
->connection_timeout
.cb
= uclient_connection_timeout
;
199 int uclient_set_proxy_url(struct uclient
*cl
, const char *url_str
, const char *auth_str
)
201 const struct uclient_backend
*backend
= cl
->backend
;
202 struct uclient_url
*url
;
206 if (!backend
->update_proxy_url
)
209 next
= strstr(url_str
, "://");
214 uclient_split_host(host
, &host_len
);
216 url
= __uclient_get_url(NULL
, host
, host_len
, url_str
, auth_str
);
223 if (backend
->update_proxy_url
)
224 backend
->update_proxy_url(cl
);
229 int uclient_set_url(struct uclient
*cl
, const char *url_str
, const char *auth_str
)
231 const struct uclient_backend
*backend
= cl
->backend
;
232 struct uclient_url
*url
= cl
->url
;
234 url
= uclient_get_url(url_str
, auth_str
);
238 if (url
->backend
!= cl
->backend
) {
244 cl
->proxy_url
= NULL
;
249 if (backend
->update_url
)
250 backend
->update_url(cl
);
255 int uclient_set_timeout(struct uclient
*cl
, int msecs
)
260 cl
->timeout_msecs
= msecs
;
265 int uclient_connect(struct uclient
*cl
)
267 return cl
->backend
->connect(cl
);
270 void uclient_free(struct uclient
*cl
)
272 struct uclient_url
*url
= cl
->url
;
274 if (cl
->backend
->free
)
275 cl
->backend
->free(cl
);
282 int uclient_write(struct uclient
*cl
, const char *buf
, int len
)
284 if (!cl
->backend
->write
)
287 return cl
->backend
->write(cl
, buf
, len
);
290 int uclient_request(struct uclient
*cl
)
294 if (!cl
->backend
->request
)
297 err
= cl
->backend
->request(cl
);
301 uloop_timeout_set(&cl
->connection_timeout
, cl
->timeout_msecs
);
306 int uclient_read(struct uclient
*cl
, char *buf
, int len
)
308 if (!cl
->backend
->read
)
311 return cl
->backend
->read(cl
, buf
, len
);
314 void uclient_disconnect(struct uclient
*cl
)
316 uloop_timeout_cancel(&cl
->connection_timeout
);
318 if (!cl
->backend
->disconnect
)
321 cl
->backend
->disconnect(cl
);
324 static void __uclient_backend_change_state(struct uloop_timeout
*timeout
)
326 struct uclient
*cl
= container_of(timeout
, struct uclient
, timeout
);
328 if (cl
->error_code
&& cl
->cb
->error
)
329 cl
->cb
->error(cl
, cl
->error_code
);
330 else if (cl
->eof
&& cl
->cb
->data_eof
)
331 cl
->cb
->data_eof(cl
);
334 static void uclient_backend_change_state(struct uclient
*cl
)
336 cl
->timeout
.cb
= __uclient_backend_change_state
;
337 uloop_timeout_set(&cl
->timeout
, 1);
340 void __hidden
uclient_backend_set_error(struct uclient
*cl
, int code
)
345 uloop_timeout_cancel(&cl
->connection_timeout
);
346 cl
->error_code
= code
;
347 uclient_backend_change_state(cl
);
350 void __hidden
uclient_backend_set_eof(struct uclient
*cl
)
352 if (cl
->eof
|| cl
->error_code
)
355 uloop_timeout_cancel(&cl
->connection_timeout
);
357 uclient_backend_change_state(cl
);
360 void __hidden
uclient_backend_reset_state(struct uclient
*cl
)
362 cl
->data_eof
= false;
365 uloop_timeout_cancel(&cl
->timeout
);