Disconnect hostapd from building in base
[dragonfly.git] / contrib / hostapd / src / wps / http_client.c
CommitLineData
4781064b
JM
1/*
2 * http_client - HTTP client
3 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#include "includes.h"
10#include <fcntl.h>
11
12#include "common.h"
13#include "eloop.h"
14#include "httpread.h"
15#include "http_client.h"
16
17
18#define HTTP_CLIENT_TIMEOUT_SEC 30
19
20
21struct http_client {
22 struct sockaddr_in dst;
23 int sd;
24 struct wpabuf *req;
25 size_t req_pos;
26 size_t max_response;
27
28 void (*cb)(void *ctx, struct http_client *c,
29 enum http_client_event event);
30 void *cb_ctx;
31 struct httpread *hread;
32 struct wpabuf body;
33};
34
35
36static void http_client_timeout(void *eloop_data, void *user_ctx)
37{
38 struct http_client *c = eloop_data;
39 wpa_printf(MSG_DEBUG, "HTTP: Timeout (c=%p)", c);
40 c->cb(c->cb_ctx, c, HTTP_CLIENT_TIMEOUT);
41}
42
43
44static void http_client_got_response(struct httpread *handle, void *cookie,
45 enum httpread_event e)
46{
47 struct http_client *c = cookie;
48
49 wpa_printf(MSG_DEBUG, "HTTP: httpread callback: handle=%p cookie=%p "
50 "e=%d", handle, cookie, e);
51
52 eloop_cancel_timeout(http_client_timeout, c, NULL);
53 switch (e) {
54 case HTTPREAD_EVENT_FILE_READY:
55 if (httpread_hdr_type_get(c->hread) == HTTPREAD_HDR_TYPE_REPLY)
56 {
57 int reply_code = httpread_reply_code_get(c->hread);
58 if (reply_code == 200 /* OK */) {
59 wpa_printf(MSG_DEBUG, "HTTP: Response OK from "
60 "%s:%d",
61 inet_ntoa(c->dst.sin_addr),
62 ntohs(c->dst.sin_port));
63 c->cb(c->cb_ctx, c, HTTP_CLIENT_OK);
64 } else {
65 wpa_printf(MSG_DEBUG, "HTTP: Error %d from "
66 "%s:%d", reply_code,
67 inet_ntoa(c->dst.sin_addr),
68 ntohs(c->dst.sin_port));
69 c->cb(c->cb_ctx, c, HTTP_CLIENT_INVALID_REPLY);
70 }
71 } else
72 c->cb(c->cb_ctx, c, HTTP_CLIENT_INVALID_REPLY);
73 break;
74 case HTTPREAD_EVENT_TIMEOUT:
75 c->cb(c->cb_ctx, c, HTTP_CLIENT_TIMEOUT);
76 break;
77 case HTTPREAD_EVENT_ERROR:
78 c->cb(c->cb_ctx, c, HTTP_CLIENT_FAILED);
79 break;
80 }
81}
82
83
84static void http_client_tx_ready(int sock, void *eloop_ctx, void *sock_ctx)
85{
86 struct http_client *c = eloop_ctx;
87 int res;
88
89 wpa_printf(MSG_DEBUG, "HTTP: Send client request to %s:%d (%lu of %lu "
90 "bytes remaining)",
91 inet_ntoa(c->dst.sin_addr), ntohs(c->dst.sin_port),
92 (unsigned long) wpabuf_len(c->req),
93 (unsigned long) wpabuf_len(c->req) - c->req_pos);
94
95 res = send(c->sd, wpabuf_head_u8(c->req) + c->req_pos,
96 wpabuf_len(c->req) - c->req_pos, 0);
97 if (res < 0) {
98 wpa_printf(MSG_DEBUG, "HTTP: Failed to send buffer: %s",
99 strerror(errno));
100 eloop_unregister_sock(c->sd, EVENT_TYPE_WRITE);
101 c->cb(c->cb_ctx, c, HTTP_CLIENT_FAILED);
102 return;
103 }
104
105 if ((size_t) res < wpabuf_len(c->req) - c->req_pos) {
106 wpa_printf(MSG_DEBUG, "HTTP: Sent %d of %lu bytes; %lu bytes "
107 "remaining",
108 res, (unsigned long) wpabuf_len(c->req),
109 (unsigned long) wpabuf_len(c->req) - c->req_pos -
110 res);
111 c->req_pos += res;
112 return;
113 }
114
115 wpa_printf(MSG_DEBUG, "HTTP: Full client request sent to %s:%d",
116 inet_ntoa(c->dst.sin_addr), ntohs(c->dst.sin_port));
117 eloop_unregister_sock(c->sd, EVENT_TYPE_WRITE);
118 wpabuf_free(c->req);
119 c->req = NULL;
120
121 c->hread = httpread_create(c->sd, http_client_got_response, c,
122 c->max_response, HTTP_CLIENT_TIMEOUT_SEC);
123 if (c->hread == NULL) {
124 c->cb(c->cb_ctx, c, HTTP_CLIENT_FAILED);
125 return;
126 }
127}
128
129
130struct http_client * http_client_addr(struct sockaddr_in *dst,
131 struct wpabuf *req, size_t max_response,
132 void (*cb)(void *ctx,
133 struct http_client *c,
134 enum http_client_event event),
135 void *cb_ctx)
136{
137 struct http_client *c;
138
139 c = os_zalloc(sizeof(*c));
140 if (c == NULL)
141 return NULL;
142 c->sd = -1;
143 c->dst = *dst;
144 c->max_response = max_response;
145 c->cb = cb;
146 c->cb_ctx = cb_ctx;
147
148 c->sd = socket(AF_INET, SOCK_STREAM, 0);
149 if (c->sd < 0) {
150 http_client_free(c);
151 return NULL;
152 }
153
154 if (fcntl(c->sd, F_SETFL, O_NONBLOCK) != 0) {
155 wpa_printf(MSG_DEBUG, "HTTP: fnctl(O_NONBLOCK) failed: %s",
156 strerror(errno));
157 http_client_free(c);
158 return NULL;
159 }
160
161 if (connect(c->sd, (struct sockaddr *) dst, sizeof(*dst))) {
162 if (errno != EINPROGRESS) {
163 wpa_printf(MSG_DEBUG, "HTTP: Failed to connect: %s",
164 strerror(errno));
165 http_client_free(c);
166 return NULL;
167 }
168
169 /*
170 * Continue connecting in the background; eloop will call us
171 * once the connection is ready (or failed).
172 */
173 }
174
175 if (eloop_register_sock(c->sd, EVENT_TYPE_WRITE, http_client_tx_ready,
176 c, NULL)) {
177 http_client_free(c);
178 return NULL;
179 }
180
181 if (eloop_register_timeout(HTTP_CLIENT_TIMEOUT_SEC, 0,
182 http_client_timeout, c, NULL)) {
183 http_client_free(c);
184 return NULL;
185 }
186
187 c->req = req;
188
189 return c;
190}
191
192
193char * http_client_url_parse(const char *url, struct sockaddr_in *dst,
194 char **ret_path)
195{
196 char *u, *addr, *port, *path;
197
198 u = os_strdup(url);
199 if (u == NULL)
200 return NULL;
201
202 os_memset(dst, 0, sizeof(*dst));
203 dst->sin_family = AF_INET;
204 addr = u + 7;
205 path = os_strchr(addr, '/');
206 port = os_strchr(addr, ':');
207 if (path == NULL) {
208 path = "/";
209 } else {
210 *path = '\0'; /* temporary nul termination for address */
211 if (port > path)
212 port = NULL;
213 }
214 if (port)
215 *port++ = '\0';
216
217 if (inet_aton(addr, &dst->sin_addr) == 0) {
218 /* TODO: name lookup */
219 wpa_printf(MSG_DEBUG, "HTTP: Unsupported address in URL '%s' "
220 "(addr='%s' port='%s')",
221 url, addr, port);
222 os_free(u);
223 return NULL;
224 }
225
226 if (port)
227 dst->sin_port = htons(atoi(port));
228 else
229 dst->sin_port = htons(80);
230
231 if (*path == '\0') {
232 /* remove temporary nul termination for address */
233 *path = '/';
234 }
235
236 *ret_path = path;
237
238 return u;
239}
240
241
242struct http_client * http_client_url(const char *url,
243 struct wpabuf *req, size_t max_response,
244 void (*cb)(void *ctx,
245 struct http_client *c,
246 enum http_client_event event),
247 void *cb_ctx)
248{
249 struct sockaddr_in dst;
250 struct http_client *c;
251 char *u, *path;
252 struct wpabuf *req_buf = NULL;
253
254 if (os_strncmp(url, "http://", 7) != 0)
255 return NULL;
256 u = http_client_url_parse(url, &dst, &path);
257 if (u == NULL)
258 return NULL;
259
260 if (req == NULL) {
261 req_buf = wpabuf_alloc(os_strlen(url) + 1000);
262 if (req_buf == NULL) {
263 os_free(u);
264 return NULL;
265 }
266 req = req_buf;
267 wpabuf_printf(req,
268 "GET %s HTTP/1.1\r\n"
269 "Cache-Control: no-cache\r\n"
270 "Pragma: no-cache\r\n"
271 "Accept: text/xml, application/xml\r\n"
272 "User-Agent: wpa_supplicant\r\n"
273 "Host: %s:%d\r\n"
274 "\r\n",
275 path, inet_ntoa(dst.sin_addr),
276 ntohs(dst.sin_port));
277 }
278 os_free(u);
279
280 c = http_client_addr(&dst, req, max_response, cb, cb_ctx);
281 if (c == NULL) {
282 wpabuf_free(req_buf);
283 return NULL;
284 }
285
286 return c;
287}
288
289
290void http_client_free(struct http_client *c)
291{
292 if (c == NULL)
293 return;
294 httpread_destroy(c->hread);
295 wpabuf_free(c->req);
296 if (c->sd >= 0) {
297 eloop_unregister_sock(c->sd, EVENT_TYPE_WRITE);
298 close(c->sd);
299 }
300 eloop_cancel_timeout(http_client_timeout, c, NULL);
301 os_free(c);
302}
303
304
305struct wpabuf * http_client_get_body(struct http_client *c)
306{
307 if (c->hread == NULL)
308 return NULL;
309 wpabuf_set(&c->body, httpread_data_get(c->hread),
310 httpread_length_get(c->hread));
311 return &c->body;
312}
313
314
315char * http_client_get_hdr_line(struct http_client *c, const char *tag)
316{
317 if (c->hread == NULL)
318 return NULL;
319 return httpread_hdr_line_get(c->hread, tag);
320}
321
322
323char * http_link_update(char *url, const char *base)
324{
325 char *n;
326 size_t len;
327 const char *pos;
328
329 /* RFC 2396, Chapter 5.2 */
330 /* TODO: consider adding all cases described in RFC 2396 */
331
332 if (url == NULL)
333 return NULL;
334
335 if (os_strncmp(url, "http://", 7) == 0)
336 return url; /* absolute link */
337
338 if (os_strncmp(base, "http://", 7) != 0)
339 return url; /* unable to handle base URL */
340
341 len = os_strlen(url) + 1 + os_strlen(base) + 1;
342 n = os_malloc(len);
343 if (n == NULL)
344 return url; /* failed */
345
346 if (url[0] == '/') {
347 pos = os_strchr(base + 7, '/');
348 if (pos == NULL) {
349 os_snprintf(n, len, "%s%s", base, url);
350 } else {
351 os_memcpy(n, base, pos - base);
352 os_memcpy(n + (pos - base), url, os_strlen(url) + 1);
353 }
354 } else {
355 pos = os_strrchr(base + 7, '/');
356 if (pos == NULL) {
357 os_snprintf(n, len, "%s/%s", base, url);
358 } else {
359 os_memcpy(n, base, pos - base + 1);
360 os_memcpy(n + (pos - base) + 1, url, os_strlen(url) +
361 1);
362 }
363 }
364
365 os_free(url);
366
367 return n;
368}