/*
* uhttpd - Tiny single-threaded httpd
*
- * Copyright (C) 2010-2012 Jo-Philipp Wich <xm@subsignal.org>
- * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org>
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
*
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <libubox/blobmsg.h>
#include <ctype.h>
#include "uhttpd.h"
+#include "tls.h"
static LIST_HEAD(clients);
+static bool client_done = false;
int n_clients = 0;
struct config conf = {};
[UH_HTTP_MSG_GET] = "GET",
[UH_HTTP_MSG_POST] = "POST",
[UH_HTTP_MSG_HEAD] = "HEAD",
+ [UH_HTTP_MSG_OPTIONS] = "OPTIONS",
};
void uh_http_header(struct client *cl, int code, const char *summary)
{
+ struct http_request *r = &cl->request;
+ struct blob_attr *cur;
const char *enc = "Transfer-Encoding: chunked\r\n";
const char *conn;
+ int rem;
+
+ cl->http_code = code;
if (!uh_use_chunked(cl))
enc = "";
- if (cl->request.version != UH_HTTP_VER_1_1)
+ if (r->connection_close)
conn = "Connection: close";
else
- conn = "Connection: keep-alive";
+ conn = "Connection: Keep-Alive";
ustream_printf(cl->us, "%s %03i %s\r\n%s\r\n%s",
http_versions[cl->request.version],
code, summary, conn, enc);
+
+ if (!r->connection_close)
+ ustream_printf(cl->us, "Keep-Alive: timeout=%d\r\n", conf.http_keepalive);
+
+ blobmsg_for_each_attr(cur, cl->hdr_response.head, rem)
+ ustream_printf(cl->us, "%s: %s\r\n", blobmsg_name(cur),
+ blobmsg_get_string(cur));
}
static void uh_connection_close(struct client *cl)
{
if (cl->dispatch.free)
cl->dispatch.free(cl);
+ if (cl->dispatch.req_free)
+ cl->dispatch.req_free(cl);
+}
+
+static void client_timeout(struct uloop_timeout *timeout)
+{
+ struct client *cl = container_of(timeout, struct client, timeout);
+
+ cl->state = CLIENT_STATE_CLOSE;
+ uh_connection_close(cl);
+}
+
+static void uh_set_client_timeout(struct client *cl, int timeout)
+{
+ cl->timeout.cb = client_timeout;
+ uloop_timeout_set(&cl->timeout, timeout * 1000);
+}
+
+static void uh_keepalive_poll_cb(struct uloop_timeout *timeout)
+{
+ struct client *cl = container_of(timeout, struct client, timeout);
+ int sec = cl->requests > 0 ? conf.http_keepalive : conf.network_timeout;
+
+ uh_set_client_timeout(cl, sec);
+ cl->us->notify_read(cl->us, 0);
+}
+
+static void uh_poll_connection(struct client *cl)
+{
+ cl->timeout.cb = uh_keepalive_poll_cb;
+ uloop_timeout_set(&cl->timeout, 1);
}
void uh_request_done(struct client *cl)
{
uh_chunk_eof(cl);
uh_dispatch_done(cl);
- cl->us->notify_write = NULL;
+ blob_buf_init(&cl->hdr_response, 0);
memset(&cl->dispatch, 0, sizeof(cl->dispatch));
- if (cl->request.version != UH_HTTP_VER_1_1 || !conf.http_keepalive) {
- uh_connection_close(cl);
- return;
- }
+ if (!conf.http_keepalive || cl->request.connection_close)
+ return uh_connection_close(cl);
cl->state = CLIENT_STATE_INIT;
- uloop_timeout_set(&cl->timeout, conf.http_keepalive * 1000);
+ cl->requests++;
+ uh_poll_connection(cl);
}
void __printf(4, 5)
uh_connection_close(cl);
}
-static void client_timeout(struct uloop_timeout *timeout)
-{
- struct client *cl = container_of(timeout, struct client, timeout);
-
- cl->state = CLIENT_STATE_CLOSE;
- uh_connection_close(cl);
-}
-
static int find_idx(const char * const *list, int max, const char *str)
{
int i;
if (!type || !path || !version)
return CLIENT_STATE_DONE;
- memset(&cl->request, 0, sizeof(cl->request));
- req->url = path;
+ blobmsg_add_string(&cl->hdr, "URL", path);
+ memset(&cl->request, 0, sizeof(cl->request));
h_method = find_idx(http_methods, ARRAY_SIZE(http_methods), type);
h_version = find_idx(http_versions, ARRAY_SIZE(http_versions), version);
if (h_method < 0 || h_version < 0) {
req->method = h_method;
req->version = h_version;
+ if (req->version < UH_HTTP_VER_1_1 || req->method == UH_HTTP_MSG_POST ||
+ !conf.http_keepalive)
+ req->connection_close = true;
return CLIENT_STATE_HEADER;
}
if (!newline)
return false;
+ if (newline == buf) {
+ ustream_consume(cl->us, 2);
+ return true;
+ }
+
*newline = 0;
blob_buf_init(&cl->hdr, 0);
- blobmsg_add_string(&cl->hdr, "REQUEST", buf);
+ cl->state = client_parse_request(cl, buf);
ustream_consume(cl->us, newline + 2 - buf);
- cl->state = client_parse_request(cl, (char *) blobmsg_data(blob_data(cl->hdr.head)));
if (cl->state == CLIENT_STATE_DONE)
uh_header_error(cl, 400, "Bad Request");
return false;
}
+static bool tls_redirect_check(struct client *cl)
+{
+ int rem, port;
+ struct blob_attr *cur;
+ char *ptr, *url = NULL, *host = NULL;
+
+ if (cl->tls || !conf.tls_redirect)
+ return true;
+
+ if ((port = uh_first_tls_port(cl->srv_addr.family)) == -1)
+ return true;
+
+ blob_for_each_attr(cur, cl->hdr.head, rem) {
+ if (!strcmp(blobmsg_name(cur), "host"))
+ host = blobmsg_get_string(cur);
+
+ if (!strcmp(blobmsg_name(cur), "URL"))
+ url = blobmsg_get_string(cur);
+
+ if (url && host)
+ break;
+ }
+
+ if (!url || !host)
+ return true;
+
+ if ((ptr = strchr(host, ']')) != NULL)
+ *(ptr+1) = 0;
+ else if ((ptr = strchr(host, ':')) != NULL)
+ *ptr = 0;
+
+ cl->request.disable_chunked = true;
+ cl->request.connection_close = true;
+
+ uh_http_header(cl, 307, "Temporary Redirect");
+
+ if (port != 443)
+ ustream_printf(cl->us, "Location: https://%s:%d%s\r\n\r\n", host, port, url);
+ else
+ ustream_printf(cl->us, "Location: https://%s%s\r\n\r\n", host, url);
+
+ uh_request_done(cl);
+
+ return false;
+}
+
static void client_header_complete(struct client *cl)
{
+ struct http_request *r = &cl->request;
+
if (!rfc1918_filter_check(cl))
return;
- if (cl->request.expect_cont)
+ if (!tls_redirect_check(cl))
+ return;
+
+ if (r->expect_cont)
ustream_printf(cl->us, "HTTP/1.1 100 Continue\r\n\r\n");
+ switch(r->ua) {
+ case UH_UA_MSIE_OLD:
+ if (r->method != UH_HTTP_MSG_POST)
+ break;
+
+ /* fall through */
+ case UH_UA_SAFARI:
+ r->connection_close = true;
+ break;
+ default:
+ break;
+ }
+
uh_handle_request(cl);
}
} else if (!strcmp(data, "transfer-encoding")) {
if (!strcmp(val, "chunked"))
r->transfer_chunked = true;
+ } else if (!strcmp(data, "connection")) {
+ if (!strcasecmp(val, "close"))
+ r->connection_close = true;
+ } else if (!strcmp(data, "user-agent")) {
+ char *str;
+
+ if (strstr(val, "Opera"))
+ r->ua = UH_UA_OPERA;
+ else if ((str = strstr(val, "MSIE ")) != NULL) {
+ r->ua = UH_UA_MSIE_NEW;
+ if (str[5] && str[6] == '.') {
+ switch (str[5]) {
+ case '6':
+ if (strstr(str, "SV1"))
+ break;
+ /* fall through */
+ case '5':
+ case '4':
+ r->ua = UH_UA_MSIE_OLD;
+ break;
+ }
+ }
+ }
+ else if (strstr(val, "Chrome/"))
+ r->ua = UH_UA_CHROME;
+ else if (strstr(val, "Safari/") && strstr(val, "Mac OS X"))
+ r->ua = UH_UA_SAFARI;
+ else if (strstr(val, "Gecko/"))
+ r->ua = UH_UA_GECKO;
+ else if (strstr(val, "Konqueror"))
+ r->ua = UH_UA_KONQUEROR;
}
cl->state = CLIENT_STATE_HEADER;
}
-static bool client_data_cb(struct client *cl, char *buf, int len)
+void client_poll_post_data(struct client *cl)
{
struct dispatch *d = &cl->dispatch;
struct http_request *r = &cl->request;
- int consumed = 0;
- int cur_len = 0;
+ char *buf;
+ int len;
- if (!d->data_send)
- return false;
+ if (cl->state == CLIENT_STATE_DONE)
+ return;
- while (len) {
+ while (1) {
char *sep;
+ int offset = 0;
+ int cur_len;
- r->content_length -= cur_len;
- consumed += cur_len;
- buf += cur_len;
- len -= cur_len;
- cur_len = min(r->content_length, len);
+ buf = ustream_get_read_buf(cl->us, &len);
+ if (!buf || !len)
+ break;
+
+ if (!d->data_send)
+ return;
+ cur_len = min(r->content_length, len);
if (cur_len) {
+ if (d->data_blocked)
+ break;
+
if (d->data_send)
- d->data_send(cl, buf, cur_len);
+ cur_len = d->data_send(cl, buf, cur_len);
+
+ r->content_length -= cur_len;
+ ustream_consume(cl->us, cur_len);
continue;
}
if (!r->transfer_chunked)
break;
- sep = strstr(buf, "\r\n");
+ if (r->transfer_chunked > 1)
+ offset = 2;
+
+ sep = strstr(buf + offset, "\r\n");
if (!sep)
break;
*sep = 0;
- cur_len = sep + 2 - buf;
- r->content_length = strtoul(buf, &sep, 16);
+ r->content_length = strtoul(buf + offset, &sep, 16);
+ r->transfer_chunked++;
+ ustream_consume(cl->us, sep + 2 - buf);
/* invalid chunk length */
- if (sep && *sep)
- return false;
+ if (sep && *sep) {
+ r->content_length = 0;
+ r->transfer_chunked = 0;
+ break;
+ }
/* empty chunk == eof */
if (!r->content_length) {
r->transfer_chunked = false;
- continue;
+ break;
}
}
- ustream_consume(cl->us, consumed);
- return r->content_length || r->transfer_chunked;
+ buf = ustream_get_read_buf(cl->us, &len);
+ if (!r->content_length && !r->transfer_chunked &&
+ cl->state != CLIENT_STATE_DONE) {
+ if (cl->dispatch.data_done)
+ cl->dispatch.data_done(cl);
+
+ cl->state = CLIENT_STATE_DONE;
+ }
+}
+
+static bool client_data_cb(struct client *cl, char *buf, int len)
+{
+ client_poll_post_data(cl);
+ return false;
}
static bool client_header_cb(struct client *cl, char *buf, int len)
[CLIENT_STATE_DATA] = client_data_cb,
};
-static void client_read_cb(struct client *cl)
+void uh_client_read_cb(struct client *cl)
{
struct ustream *us = cl->us;
char *str;
int len;
+ client_done = false;
do {
str = ustream_get_read_buf(us, &len);
if (!str || !len)
break;
if (!read_cbs[cl->state](cl, str, len)) {
- if (len == us->r.buffer_len)
+ if (len == us->r.buffer_len &&
+ cl->state != CLIENT_STATE_DATA)
uh_header_error(cl, 413, "Request Entity Too Large");
- if (cl->dispatch.data_done)
- cl->dispatch.data_done(cl);
break;
}
- } while(1);
+ } while (!client_done);
}
static void client_close(struct client *cl)
{
+ if (cl->refcount) {
+ cl->state = CLIENT_STATE_CLEANUP;
+ return;
+ }
+
+ client_done = true;
n_clients--;
uh_dispatch_done(cl);
uloop_timeout_cancel(&cl->timeout);
+ if (cl->tls)
+ uh_tls_client_detach(cl);
ustream_free(&cl->sfd.stream);
close(cl->sfd.fd.fd);
list_del(&cl->list);
blob_buf_free(&cl->hdr);
+ blob_buf_free(&cl->hdr_response);
free(cl);
uh_unblock_listeners();
}
+void uh_client_notify_state(struct client *cl)
+{
+ struct ustream *s = cl->us;
+
+ if (!s->write_error && cl->state != CLIENT_STATE_CLEANUP) {
+ if (cl->state == CLIENT_STATE_DATA)
+ return;
+
+ if (!s->eof || s->w.data_bytes)
+ return;
+ }
+
+ return client_close(cl);
+}
+
static void client_ustream_read_cb(struct ustream *s, int bytes)
{
- struct client *cl = container_of(s, struct client, sfd);
+ struct client *cl = container_of(s, struct client, sfd.stream);
- client_read_cb(cl);
+ uh_client_read_cb(cl);
}
static void client_ustream_write_cb(struct ustream *s, int bytes)
{
- struct client *cl = container_of(s, struct client, sfd);
+ struct client *cl = container_of(s, struct client, sfd.stream);
if (cl->dispatch.write_cb)
cl->dispatch.write_cb(cl);
static void client_notify_state(struct ustream *s)
{
- struct client *cl = container_of(s, struct client, sfd);
-
- if (!s->write_error) {
- if (cl->state == CLIENT_STATE_DATA)
- return;
-
- if (!s->eof || s->w.data_bytes)
- return;
- }
+ struct client *cl = container_of(s, struct client, sfd.stream);
- return client_close(cl);
+ uh_client_notify_state(cl);
}
static void set_addr(struct uh_addr *addr, void *src)
}
}
-void uh_accept_client(int fd)
+bool uh_accept_client(int fd, bool tls)
{
static struct client *next_client;
struct client *cl;
sl = sizeof(addr);
sfd = accept(fd, (struct sockaddr *) &addr, &sl);
if (sfd < 0)
- return;
+ return false;
set_addr(&cl->peer_addr, &addr);
sl = sizeof(addr);
- getsockname(fd, (struct sockaddr *) &addr, &sl);
+ getsockname(sfd, (struct sockaddr *) &addr, &sl);
set_addr(&cl->srv_addr, &addr);
+
cl->us = &cl->sfd.stream;
+ if (tls) {
+ uh_tls_client_attach(cl);
+ } else {
+ cl->us->notify_read = client_ustream_read_cb;
+ cl->us->notify_write = client_ustream_write_cb;
+ cl->us->notify_state = client_notify_state;
+ }
+
cl->us->string_data = true;
- cl->us->notify_read = client_ustream_read_cb;
- cl->us->notify_write = client_ustream_write_cb;
- cl->us->notify_state = client_notify_state;
ustream_fd_init(&cl->sfd, sfd);
- cl->timeout.cb = client_timeout;
- uloop_timeout_set(&cl->timeout, conf.network_timeout * 1000);
-
+ uh_poll_connection(cl);
list_add_tail(&cl->list, &clients);
next_client = NULL;
n_clients++;
cl->id = client_id++;
+ cl->tls = tls;
+
+ return true;
}
void uh_close_fds(void)
projects / project / uhttpd.git / blobdiff