+++ /dev/null
-/*
- * http_client - HTTP client
- * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
- *
- * This software may be distributed under the terms of the BSD license.
- * See README for more details.
- */
-
-#include "includes.h"
-#include <fcntl.h>
-
-#include "common.h"
-#include "eloop.h"
-#include "httpread.h"
-#include "http_client.h"
-
-
-#define HTTP_CLIENT_TIMEOUT_SEC 30
-
-
-struct http_client {
- struct sockaddr_in dst;
- int sd;
- struct wpabuf *req;
- size_t req_pos;
- size_t max_response;
-
- void (*cb)(void *ctx, struct http_client *c,
- enum http_client_event event);
- void *cb_ctx;
- struct httpread *hread;
- struct wpabuf body;
-};
-
-
-static void http_client_timeout(void *eloop_data, void *user_ctx)
-{
- struct http_client *c = eloop_data;
- wpa_printf(MSG_DEBUG, "HTTP: Timeout (c=%p)", c);
- c->cb(c->cb_ctx, c, HTTP_CLIENT_TIMEOUT);
-}
-
-
-static void http_client_got_response(struct httpread *handle, void *cookie,
- enum httpread_event e)
-{
- struct http_client *c = cookie;
-
- wpa_printf(MSG_DEBUG, "HTTP: httpread callback: handle=%p cookie=%p "
- "e=%d", handle, cookie, e);
-
- eloop_cancel_timeout(http_client_timeout, c, NULL);
- switch (e) {
- case HTTPREAD_EVENT_FILE_READY:
- if (httpread_hdr_type_get(c->hread) == HTTPREAD_HDR_TYPE_REPLY)
- {
- int reply_code = httpread_reply_code_get(c->hread);
- if (reply_code == 200 /* OK */) {
- wpa_printf(MSG_DEBUG, "HTTP: Response OK from "
- "%s:%d",
- inet_ntoa(c->dst.sin_addr),
- ntohs(c->dst.sin_port));
- c->cb(c->cb_ctx, c, HTTP_CLIENT_OK);
- } else {
- wpa_printf(MSG_DEBUG, "HTTP: Error %d from "
- "%s:%d", reply_code,
- inet_ntoa(c->dst.sin_addr),
- ntohs(c->dst.sin_port));
- c->cb(c->cb_ctx, c, HTTP_CLIENT_INVALID_REPLY);
- }
- } else
- c->cb(c->cb_ctx, c, HTTP_CLIENT_INVALID_REPLY);
- break;
- case HTTPREAD_EVENT_TIMEOUT:
- c->cb(c->cb_ctx, c, HTTP_CLIENT_TIMEOUT);
- break;
- case HTTPREAD_EVENT_ERROR:
- c->cb(c->cb_ctx, c, HTTP_CLIENT_FAILED);
- break;
- }
-}
-
-
-static void http_client_tx_ready(int sock, void *eloop_ctx, void *sock_ctx)
-{
- struct http_client *c = eloop_ctx;
- int res;
- size_t send_len;
-
- send_len = wpabuf_len(c->req) - c->req_pos;
- wpa_printf(MSG_DEBUG, "HTTP: Send client request to %s:%d (%lu of %lu "
- "bytes remaining)",
- inet_ntoa(c->dst.sin_addr), ntohs(c->dst.sin_port),
- (unsigned long) wpabuf_len(c->req),
- (unsigned long) send_len);
-
- res = send(c->sd, wpabuf_head_u8(c->req) + c->req_pos, send_len, 0);
- if (res < 0) {
- wpa_printf(MSG_DEBUG, "HTTP: Failed to send buffer: %s",
- strerror(errno));
- eloop_unregister_sock(c->sd, EVENT_TYPE_WRITE);
- c->cb(c->cb_ctx, c, HTTP_CLIENT_FAILED);
- return;
- }
-
- if ((size_t) res < send_len) {
- wpa_printf(MSG_DEBUG, "HTTP: Sent %d of %lu bytes; %lu bytes "
- "remaining",
- res, (unsigned long) wpabuf_len(c->req),
- (unsigned long) send_len - res);
- c->req_pos += res;
- return;
- }
-
- wpa_printf(MSG_DEBUG, "HTTP: Full client request sent to %s:%d",
- inet_ntoa(c->dst.sin_addr), ntohs(c->dst.sin_port));
- eloop_unregister_sock(c->sd, EVENT_TYPE_WRITE);
- wpabuf_free(c->req);
- c->req = NULL;
-
- c->hread = httpread_create(c->sd, http_client_got_response, c,
- c->max_response, HTTP_CLIENT_TIMEOUT_SEC);
- if (c->hread == NULL) {
- c->cb(c->cb_ctx, c, HTTP_CLIENT_FAILED);
- return;
- }
-}
-
-
-struct http_client * http_client_addr(struct sockaddr_in *dst,
- struct wpabuf *req, size_t max_response,
- void (*cb)(void *ctx,
- struct http_client *c,
- enum http_client_event event),
- void *cb_ctx)
-{
- struct http_client *c;
-
- c = os_zalloc(sizeof(*c));
- if (c == NULL)
- return NULL;
- c->sd = -1;
- c->dst = *dst;
- c->max_response = max_response;
- c->cb = cb;
- c->cb_ctx = cb_ctx;
-
- c->sd = socket(AF_INET, SOCK_STREAM, 0);
- if (c->sd < 0)
- goto fail;
-
- if (fcntl(c->sd, F_SETFL, O_NONBLOCK) != 0) {
- wpa_printf(MSG_DEBUG, "HTTP: fnctl(O_NONBLOCK) failed: %s",
- strerror(errno));
- goto fail;
- }
-
- if (connect(c->sd, (struct sockaddr *) dst, sizeof(*dst))) {
- if (errno != EINPROGRESS) {
- wpa_printf(MSG_DEBUG, "HTTP: Failed to connect: %s",
- strerror(errno));
- goto fail;
- }
-
- /*
- * Continue connecting in the background; eloop will call us
- * once the connection is ready (or failed).
- */
- }
-
- if (eloop_register_sock(c->sd, EVENT_TYPE_WRITE, http_client_tx_ready,
- c, NULL) ||
- eloop_register_timeout(HTTP_CLIENT_TIMEOUT_SEC, 0,
- http_client_timeout, c, NULL))
- goto fail;
-
- c->req = req;
-
- return c;
-
-fail:
- http_client_free(c);
- return NULL;
-}
-
-
-char * http_client_url_parse(const char *url, struct sockaddr_in *dst,
- char **ret_path)
-{
- char *u, *addr, *port, *path;
-
- u = os_strdup(url);
- if (u == NULL)
- return NULL;
-
- os_memset(dst, 0, sizeof(*dst));
- dst->sin_family = AF_INET;
- addr = u + 7;
- path = os_strchr(addr, '/');
- port = os_strchr(addr, ':');
- if (path == NULL) {
- path = "/";
- } else {
- *path = '\0'; /* temporary nul termination for address */
- if (port > path)
- port = NULL;
- }
- if (port)
- *port++ = '\0';
-
- if (inet_aton(addr, &dst->sin_addr) == 0) {
- /* TODO: name lookup */
- wpa_printf(MSG_DEBUG, "HTTP: Unsupported address in URL '%s' "
- "(addr='%s' port='%s')",
- url, addr, port);
- os_free(u);
- return NULL;
- }
-
- if (port)
- dst->sin_port = htons(atoi(port));
- else
- dst->sin_port = htons(80);
-
- if (*path == '\0') {
- /* remove temporary nul termination for address */
- *path = '/';
- }
-
- *ret_path = path;
-
- return u;
-}
-
-
-struct http_client * http_client_url(const char *url,
- struct wpabuf *req, size_t max_response,
- void (*cb)(void *ctx,
- struct http_client *c,
- enum http_client_event event),
- void *cb_ctx)
-{
- struct sockaddr_in dst;
- struct http_client *c;
- char *u, *path;
- struct wpabuf *req_buf = NULL;
-
- if (os_strncmp(url, "http://", 7) != 0)
- return NULL;
- u = http_client_url_parse(url, &dst, &path);
- if (u == NULL)
- return NULL;
-
- if (req == NULL) {
- req_buf = wpabuf_alloc(os_strlen(url) + 1000);
- if (req_buf == NULL) {
- os_free(u);
- return NULL;
- }
- req = req_buf;
- wpabuf_printf(req,
- "GET %s HTTP/1.1\r\n"
- "Cache-Control: no-cache\r\n"
- "Pragma: no-cache\r\n"
- "Accept: text/xml, application/xml\r\n"
- "User-Agent: wpa_supplicant\r\n"
- "Host: %s:%d\r\n"
- "\r\n",
- path, inet_ntoa(dst.sin_addr),
- ntohs(dst.sin_port));
- }
- os_free(u);
-
- c = http_client_addr(&dst, req, max_response, cb, cb_ctx);
- if (c == NULL) {
- wpabuf_free(req_buf);
- return NULL;
- }
-
- return c;
-}
-
-
-void http_client_free(struct http_client *c)
-{
- if (c == NULL)
- return;
- httpread_destroy(c->hread);
- wpabuf_free(c->req);
- if (c->sd >= 0) {
- eloop_unregister_sock(c->sd, EVENT_TYPE_WRITE);
- close(c->sd);
- }
- eloop_cancel_timeout(http_client_timeout, c, NULL);
- os_free(c);
-}
-
-
-struct wpabuf * http_client_get_body(struct http_client *c)
-{
- if (c->hread == NULL)
- return NULL;
- wpabuf_set(&c->body, httpread_data_get(c->hread),
- httpread_length_get(c->hread));
- return &c->body;
-}
-
-
-char * http_client_get_hdr_line(struct http_client *c, const char *tag)
-{
- if (c->hread == NULL)
- return NULL;
- return httpread_hdr_line_get(c->hread, tag);
-}
-
-
-char * http_link_update(char *url, const char *base)
-{
- char *n;
- size_t len;
- const char *pos;
-
- /* RFC 2396, Chapter 5.2 */
- /* TODO: consider adding all cases described in RFC 2396 */
-
- if (url == NULL)
- return NULL;
-
- if (os_strncmp(url, "http://", 7) == 0)
- return url; /* absolute link */
-
- if (os_strncmp(base, "http://", 7) != 0)
- return url; /* unable to handle base URL */
-
- len = os_strlen(url) + 1 + os_strlen(base) + 1;
- n = os_malloc(len);
- if (n == NULL)
- return url; /* failed */
-
- if (url[0] == '/') {
- pos = os_strchr(base + 7, '/');
- if (pos == NULL) {
- os_snprintf(n, len, "%s%s", base, url);
- } else {
- os_memcpy(n, base, pos - base);
- os_memcpy(n + (pos - base), url, os_strlen(url) + 1);
- }
- } else {
- pos = os_strrchr(base + 7, '/');
- if (pos == NULL) {
- os_snprintf(n, len, "%s/%s", base, url);
- } else {
- os_memcpy(n, base, pos - base + 1);
- os_memcpy(n + (pos - base) + 1, url, os_strlen(url) +
- 1);
- }
- }
-
- os_free(url);
-
- return n;
-}
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