2 * http_client - HTTP client
3 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
15 #include "http_client.h"
18 #define HTTP_CLIENT_TIMEOUT_SEC 30
22 struct sockaddr_in dst;
28 void (*cb)(void *ctx, struct http_client *c,
29 enum http_client_event event);
31 struct httpread *hread;
36 static void http_client_timeout(void *eloop_data, void *user_ctx)
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);
44 static void http_client_got_response(struct httpread *handle, void *cookie,
45 enum httpread_event e)
47 struct http_client *c = cookie;
49 wpa_printf(MSG_DEBUG, "HTTP: httpread callback: handle=%p cookie=%p "
50 "e=%d", handle, cookie, e);
52 eloop_cancel_timeout(http_client_timeout, c, NULL);
54 case HTTPREAD_EVENT_FILE_READY:
55 if (httpread_hdr_type_get(c->hread) == HTTPREAD_HDR_TYPE_REPLY)
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 "
61 inet_ntoa(c->dst.sin_addr),
62 ntohs(c->dst.sin_port));
63 c->cb(c->cb_ctx, c, HTTP_CLIENT_OK);
65 wpa_printf(MSG_DEBUG, "HTTP: Error %d from "
67 inet_ntoa(c->dst.sin_addr),
68 ntohs(c->dst.sin_port));
69 c->cb(c->cb_ctx, c, HTTP_CLIENT_INVALID_REPLY);
72 c->cb(c->cb_ctx, c, HTTP_CLIENT_INVALID_REPLY);
74 case HTTPREAD_EVENT_TIMEOUT:
75 c->cb(c->cb_ctx, c, HTTP_CLIENT_TIMEOUT);
77 case HTTPREAD_EVENT_ERROR:
78 c->cb(c->cb_ctx, c, HTTP_CLIENT_FAILED);
84 static void http_client_tx_ready(int sock, void *eloop_ctx, void *sock_ctx)
86 struct http_client *c = eloop_ctx;
90 send_len = wpabuf_len(c->req) - c->req_pos;
91 wpa_printf(MSG_DEBUG, "HTTP: Send client request to %s:%d (%lu of %lu "
93 inet_ntoa(c->dst.sin_addr), ntohs(c->dst.sin_port),
94 (unsigned long) wpabuf_len(c->req),
95 (unsigned long) send_len);
97 res = send(c->sd, wpabuf_head_u8(c->req) + c->req_pos, send_len, 0);
99 wpa_printf(MSG_DEBUG, "HTTP: Failed to send buffer: %s",
101 eloop_unregister_sock(c->sd, EVENT_TYPE_WRITE);
102 c->cb(c->cb_ctx, c, HTTP_CLIENT_FAILED);
106 if ((size_t) res < send_len) {
107 wpa_printf(MSG_DEBUG, "HTTP: Sent %d of %lu bytes; %lu bytes "
109 res, (unsigned long) wpabuf_len(c->req),
110 (unsigned long) send_len - res);
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);
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);
130 struct 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),
137 struct http_client *c;
139 c = os_zalloc(sizeof(*c));
144 c->max_response = max_response;
148 c->sd = socket(AF_INET, SOCK_STREAM, 0);
152 if (fcntl(c->sd, F_SETFL, O_NONBLOCK) != 0) {
153 wpa_printf(MSG_DEBUG, "HTTP: fnctl(O_NONBLOCK) failed: %s",
158 if (connect(c->sd, (struct sockaddr *) dst, sizeof(*dst))) {
159 if (errno != EINPROGRESS) {
160 wpa_printf(MSG_DEBUG, "HTTP: Failed to connect: %s",
166 * Continue connecting in the background; eloop will call us
167 * once the connection is ready (or failed).
171 if (eloop_register_sock(c->sd, EVENT_TYPE_WRITE, http_client_tx_ready,
173 eloop_register_timeout(HTTP_CLIENT_TIMEOUT_SEC, 0,
174 http_client_timeout, c, NULL))
187 char * http_client_url_parse(const char *url, struct sockaddr_in *dst,
190 char *u, *addr, *port, *path;
196 os_memset(dst, 0, sizeof(*dst));
197 dst->sin_family = AF_INET;
199 path = os_strchr(addr, '/');
200 port = os_strchr(addr, ':');
204 *path = '\0'; /* temporary nul termination for address */
211 if (inet_aton(addr, &dst->sin_addr) == 0) {
212 /* TODO: name lookup */
213 wpa_printf(MSG_DEBUG, "HTTP: Unsupported address in URL '%s' "
214 "(addr='%s' port='%s')",
221 dst->sin_port = htons(atoi(port));
223 dst->sin_port = htons(80);
226 /* remove temporary nul termination for address */
236 struct http_client * http_client_url(const char *url,
237 struct wpabuf *req, size_t max_response,
238 void (*cb)(void *ctx,
239 struct http_client *c,
240 enum http_client_event event),
243 struct sockaddr_in dst;
244 struct http_client *c;
246 struct wpabuf *req_buf = NULL;
248 if (os_strncmp(url, "http://", 7) != 0)
250 u = http_client_url_parse(url, &dst, &path);
255 req_buf = wpabuf_alloc(os_strlen(url) + 1000);
256 if (req_buf == NULL) {
262 "GET %s HTTP/1.1\r\n"
263 "Cache-Control: no-cache\r\n"
264 "Pragma: no-cache\r\n"
265 "Accept: text/xml, application/xml\r\n"
266 "User-Agent: wpa_supplicant\r\n"
269 path, inet_ntoa(dst.sin_addr),
270 ntohs(dst.sin_port));
274 c = http_client_addr(&dst, req, max_response, cb, cb_ctx);
276 wpabuf_free(req_buf);
284 void http_client_free(struct http_client *c)
288 httpread_destroy(c->hread);
291 eloop_unregister_sock(c->sd, EVENT_TYPE_WRITE);
294 eloop_cancel_timeout(http_client_timeout, c, NULL);
299 struct wpabuf * http_client_get_body(struct http_client *c)
301 if (c->hread == NULL)
303 wpabuf_set(&c->body, httpread_data_get(c->hread),
304 httpread_length_get(c->hread));
309 char * http_client_get_hdr_line(struct http_client *c, const char *tag)
311 if (c->hread == NULL)
313 return httpread_hdr_line_get(c->hread, tag);
317 char * http_link_update(char *url, const char *base)
323 /* RFC 2396, Chapter 5.2 */
324 /* TODO: consider adding all cases described in RFC 2396 */
329 if (os_strncmp(url, "http://", 7) == 0)
330 return url; /* absolute link */
332 if (os_strncmp(base, "http://", 7) != 0)
333 return url; /* unable to handle base URL */
335 len = os_strlen(url) + 1 + os_strlen(base) + 1;
338 return url; /* failed */
341 pos = os_strchr(base + 7, '/');
343 os_snprintf(n, len, "%s%s", base, url);
345 os_memcpy(n, base, pos - base);
346 os_memcpy(n + (pos - base), url, os_strlen(url) + 1);
349 pos = os_strrchr(base + 7, '/');
351 os_snprintf(n, len, "%s/%s", base, url);
353 os_memcpy(n, base, pos - base + 1);
354 os_memcpy(n + (pos - base) + 1, url, os_strlen(url) +