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_location(struct uclient_url
*url
, const char *location
)
126 struct uclient_url
*new_url
;
127 char *host_buf
, *uri_buf
, *auth_buf
, *port_buf
;
128 int host_len
= strlen(url
->host
) + 1;
129 int auth_len
= url
->auth
? strlen(url
->auth
) + 1 : 0;
130 int port_len
= url
->port
? strlen(url
->port
) + 1 : 0;
133 if (strstr(location
, "://"))
134 return uclient_get_url(location
, url
->auth
);
136 if (location
[0] == '/')
137 uri_len
= strlen(location
) + 1;
139 uri_len
= strlen(url
->location
) + strlen(location
) + 2;
141 new_url
= calloc_a(sizeof(*url
),
145 &auth_buf
, auth_len
);
150 new_url
->backend
= url
->backend
;
151 new_url
->prefix
= url
->prefix
;
152 new_url
->host
= strcpy(host_buf
, url
->host
);
154 new_url
->port
= strcpy(port_buf
, url
->port
);
156 new_url
->auth
= strcpy(auth_buf
, url
->auth
);
158 new_url
->location
= uri_buf
;
159 if (location
[0] == '/')
160 strcpy(uri_buf
, location
);
162 int len
= strcspn(url
->location
, "?#");
165 memcpy(buf
, url
->location
, len
);
166 if (buf
[len
- 1] != '/') {
172 strcpy(buf
, location
);
178 struct uclient_url __hidden
*
179 uclient_get_url(const char *url_str
, const char *auth_str
)
181 static const struct uclient_backend
*backends
[] = {
182 &uclient_backend_http
,
185 const struct uclient_backend
*backend
;
186 const char * const *prefix
= NULL
;
187 struct uclient_url
*url
;
188 const char *location
;
192 for (i
= 0; i
< ARRAY_SIZE(backends
); i
++) {
195 for (prefix
= backends
[i
]->prefix
; *prefix
; prefix
++) {
196 prefix_len
= strlen(*prefix
);
198 if (!strncmp(url_str
, *prefix
, prefix_len
))
205 url_str
+= prefix_len
;
206 backend
= backends
[i
];
213 location
= uclient_split_host(url_str
, &host_len
);
214 url
= __uclient_get_url(backend
, url_str
, host_len
, location
, auth_str
);
218 url
->prefix
= prefix
- backend
->prefix
;
222 static void uclient_connection_timeout(struct uloop_timeout
*timeout
)
224 struct uclient
*cl
= container_of(timeout
, struct uclient
, connection_timeout
);
226 if (cl
->backend
->disconnect
)
227 cl
->backend
->disconnect(cl
);
229 uclient_backend_set_error(cl
, UCLIENT_ERROR_TIMEDOUT
);
232 struct uclient
*uclient_new(const char *url_str
, const char *auth_str
, const struct uclient_cb
*cb
)
235 struct uclient_url
*url
;
237 url
= uclient_get_url(url_str
, auth_str
);
241 cl
= url
->backend
->alloc();
245 cl
->backend
= url
->backend
;
248 cl
->timeout_msecs
= UCLIENT_DEFAULT_TIMEOUT_MS
;
249 cl
->connection_timeout
.cb
= uclient_connection_timeout
;
254 int uclient_set_proxy_url(struct uclient
*cl
, const char *url_str
, const char *auth_str
)
256 const struct uclient_backend
*backend
= cl
->backend
;
257 struct uclient_url
*url
;
261 if (!backend
->update_proxy_url
)
264 next
= strstr(url_str
, "://");
269 uclient_split_host(host
, &host_len
);
271 url
= __uclient_get_url(NULL
, host
, host_len
, url_str
, auth_str
);
278 if (backend
->update_proxy_url
)
279 backend
->update_proxy_url(cl
);
284 int uclient_set_url(struct uclient
*cl
, const char *url_str
, const char *auth_str
)
286 const struct uclient_backend
*backend
= cl
->backend
;
287 struct uclient_url
*url
= cl
->url
;
289 url
= uclient_get_url(url_str
, auth_str
);
293 if (url
->backend
!= cl
->backend
) {
299 cl
->proxy_url
= NULL
;
304 if (backend
->update_url
)
305 backend
->update_url(cl
);
310 int uclient_set_timeout(struct uclient
*cl
, int msecs
)
315 cl
->timeout_msecs
= msecs
;
320 int uclient_connect(struct uclient
*cl
)
322 return cl
->backend
->connect(cl
);
325 void uclient_free(struct uclient
*cl
)
327 struct uclient_url
*url
= cl
->url
;
329 if (cl
->backend
->free
)
330 cl
->backend
->free(cl
);
337 int uclient_write(struct uclient
*cl
, const char *buf
, int len
)
339 if (!cl
->backend
->write
)
342 return cl
->backend
->write(cl
, buf
, len
);
345 int uclient_request(struct uclient
*cl
)
349 if (!cl
->backend
->request
)
352 err
= cl
->backend
->request(cl
);
356 uloop_timeout_set(&cl
->connection_timeout
, cl
->timeout_msecs
);
361 int uclient_read(struct uclient
*cl
, char *buf
, int len
)
363 if (!cl
->backend
->read
)
366 return cl
->backend
->read(cl
, buf
, len
);
369 void uclient_disconnect(struct uclient
*cl
)
371 uloop_timeout_cancel(&cl
->connection_timeout
);
373 if (!cl
->backend
->disconnect
)
376 cl
->backend
->disconnect(cl
);
379 static void __uclient_backend_change_state(struct uloop_timeout
*timeout
)
381 struct uclient
*cl
= container_of(timeout
, struct uclient
, timeout
);
383 if (cl
->error_code
&& cl
->cb
->error
)
384 cl
->cb
->error(cl
, cl
->error_code
);
385 else if (cl
->eof
&& cl
->cb
->data_eof
)
386 cl
->cb
->data_eof(cl
);
389 static void uclient_backend_change_state(struct uclient
*cl
)
391 cl
->timeout
.cb
= __uclient_backend_change_state
;
392 uloop_timeout_set(&cl
->timeout
, 1);
395 void __hidden
uclient_backend_set_error(struct uclient
*cl
, int code
)
400 uloop_timeout_cancel(&cl
->connection_timeout
);
401 cl
->error_code
= code
;
402 uclient_backend_change_state(cl
);
405 void __hidden
uclient_backend_set_eof(struct uclient
*cl
)
407 if (cl
->eof
|| cl
->error_code
)
410 uloop_timeout_cancel(&cl
->connection_timeout
);
412 uclient_backend_change_state(cl
);
415 void __hidden
uclient_backend_reset_state(struct uclient
*cl
)
417 cl
->data_eof
= false;
420 uloop_timeout_cancel(&cl
->timeout
);