+/*
+ * uclient - ustream based protocol client library
+ *
+ * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
+ *
+ * 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.
+ *
+ * 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 <sys/socket.h>
#include <stdio.h>
#include <ctype.h>
#include <unistd.h>
#include <stdint.h>
+#include <string.h>
+#include <fcntl.h>
#include <libubox/ustream.h>
#include <libubox/ustream-ssl.h>
#include "uclient-utils.h"
#include "uclient-backend.h"
-static struct ustream_ssl_ctx *ssl_ctx;
-static uint32_t nc;
-
enum auth_type {
AUTH_TYPE_UNKNOWN,
AUTH_TYPE_NONE,
REQ_GET,
REQ_HEAD,
REQ_POST,
+ REQ_PUT,
+ REQ_DELETE,
__REQ_MAX
};
[REQ_GET] = "GET",
[REQ_HEAD] = "HEAD",
[REQ_POST] = "POST",
+ [REQ_PUT] = "PUT",
+ [REQ_DELETE] = "DELETE",
};
struct uclient_http {
struct uclient uc;
+ const struct ustream_ssl_ops *ssl_ops;
+ struct ustream_ssl_ctx *ssl_ctx;
struct ustream *us;
struct ustream_fd ufd;
struct ustream_ssl ussl;
+ struct uloop_timeout disconnect_t;
+ unsigned int seq;
+
+ bool ssl_require_validation;
bool ssl;
bool eof;
bool connection_close;
+ bool disconnect;
enum request_type req_type;
enum http_state state;
long read_chunked;
long content_length;
+ int usock_flags;
+
+ uint32_t nc;
+
struct blob_buf headers;
struct blob_buf meta;
};
[__PREFIX_MAX] = NULL
};
+static int uclient_http_connect(struct uclient *cl);
+
static int uclient_do_connect(struct uclient_http *uh, const char *port)
{
+ socklen_t sl;
int fd;
if (uh->uc.url->port)
port = uh->uc.url->port;
- fd = usock(USOCK_TCP | USOCK_NONBLOCK, uh->uc.url->host, port);
+ memset(&uh->uc.remote_addr, 0, sizeof(uh->uc.remote_addr));
+
+ fd = usock_inet_timeout(USOCK_TCP | USOCK_NONBLOCK | uh->usock_flags,
+ uh->uc.url->host, port, &uh->uc.remote_addr,
+ uh->uc.timeout_msecs);
if (fd < 0)
return -1;
+ fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
ustream_fd_init(&uh->ufd, fd);
+
+ sl = sizeof(uh->uc.local_addr);
+ memset(&uh->uc.local_addr, 0, sl);
+ getsockname(fd, &uh->uc.local_addr.sa, &sl);
+
return 0;
}
static void uclient_http_disconnect(struct uclient_http *uh)
{
+ uloop_timeout_cancel(&uh->disconnect_t);
if (!uh->us)
return;
uclient_http_disconnect(uh);
}
+static void uclient_http_error(struct uclient_http *uh, int code)
+{
+ uh->state = HTTP_STATE_ERROR;
+ uh->us->eof = true;
+ ustream_state_change(uh->us);
+ uclient_backend_set_error(&uh->uc, code);
+}
+
+static void uclient_http_request_disconnect(struct uclient *cl)
+{
+ struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
+
+ if (!uh->us)
+ return;
+
+ uh->eof = true;
+ uh->disconnect = true;
+ uloop_timeout_set(&uh->disconnect_t, 1);
+}
+
static void uclient_notify_eof(struct uclient_http *uh)
{
struct ustream *us = uh->us;
+ if (uh->disconnect)
+ return;
+
if (!uh->eof) {
if (!us->eof && !us->write_error)
return;
return;
}
+ if (uh->content_length < 0 && uh->read_chunked >= 0)
+ uh->uc.data_eof = true;
+
uclient_backend_set_eof(&uh->uc);
if (uh->connection_close)
- uclient_http_disconnect(uh);
+ uclient_http_request_disconnect(&uh->uc);
}
static void uclient_http_reset_state(struct uclient_http *uh)
{
+ uh->seq++;
uclient_backend_reset_state(&uh->uc);
uh->read_chunked = -1;
uh->content_length = -1;
uh->eof = false;
+ uh->disconnect = false;
uh->connection_close = false;
uh->state = HTTP_STATE_INIT;
static void uclient_http_init_request(struct uclient_http *uh)
{
+ uh->seq++;
uclient_http_reset_state(uh);
blob_buf_init(&uh->meta, 0);
}
uh->auth_type = uclient_http_update_auth_type(uh);
}
+static bool uclient_request_supports_body(enum request_type req_type)
+{
+ switch (req_type) {
+ case REQ_POST:
+ case REQ_PUT:
+ case REQ_DELETE:
+ return true;
+ default:
+ return false;
+ }
+}
+
static void
uclient_http_add_auth_basic(struct uclient_http *uh)
{
return start;
}
+static char *digest_sep(char **str)
+{
+ char *cur, *next;
+
+ cur = *str;
+ next = strchr(*str, ',');
+ if (next) {
+ *str = next + 1;
+ *next = 0;
+ } else {
+ *str += strlen(*str);
+ }
+
+ return cur;
+}
+
static bool strmatch(char **str, const char *prefix)
{
int len = strlen(prefix);
static void
get_cnonce(char *dest)
{
- uint32_t val = nc;
+ uint32_t val = 0;
FILE *f;
+ size_t n;
f = fopen("/dev/urandom", "r");
if (f) {
- fread(&val, sizeof(val), 1, f);
+ n = fread(&val, sizeof(val), 1, f);
fclose(f);
+ if (n != 1)
+ return;
}
bin_to_hex(dest, &val, sizeof(val));
next = buf;
while (*next) {
const char **dest = NULL;
+ const char *tmp;
- while (isspace(*next))
+ while (*next && isspace(*next))
next++;
if (strmatch(&next, "realm"))
dest = &data.nonce;
else if (strmatch(&next, "opaque"))
dest = &opaque;
- else
- return;
+ else if (strmatch(&next, "stale") ||
+ strmatch(&next, "algorithm") ||
+ strmatch(&next, "auth-param")) {
+ digest_sep(&next);
+ continue;
+ } else if (strmatch(&next, "domain") ||
+ strmatch(&next, "qop-options"))
+ dest = &tmp;
+ else {
+ digest_sep(&next);
+ continue;
+ }
*dest = digest_unquote_sep(&next);
}
if (!realm || !data.qop || !data.nonce)
return;
- sprintf(nc_str, "%08x", nc++);
+ sprintf(nc_str, "%08x", uh->nc++);
get_cnonce(cnonce_str);
data.qop = "auth";
struct uclient_url *url = uh->uc.url;
struct blob_attr *cur;
enum request_type req_type = uh->req_type;
+ bool literal_ipv6;
int rem;
if (uh->state >= HTTP_STATE_HEADERS_SENT)
return;
- if (uh->auth_type == AUTH_TYPE_UNKNOWN)
- req_type = REQ_HEAD;
+ if (uh->uc.proxy_url)
+ url = uh->uc.proxy_url;
+
+ literal_ipv6 = strchr(url->host, ':');
ustream_printf(uh->us,
"%s %s HTTP/1.1\r\n"
- "Host: %s\r\n",
- request_types[req_type],
- url->location, url->host);
+ "Host: %s%s%s%s%s\r\n",
+ request_types[req_type], url->location,
+ literal_ipv6 ? "[" : "",
+ url->host,
+ literal_ipv6 ? "]" : "",
+ url->port ? ":" : "",
+ url->port ? url->port : "");
blobmsg_for_each_attr(cur, uh->headers.head, rem)
- ustream_printf(uh->us, "%s: %s\n", blobmsg_name(cur), (char *) blobmsg_data(cur));
+ ustream_printf(uh->us, "%s: %s\r\n", blobmsg_name(cur), (char *) blobmsg_data(cur));
- if (uh->req_type == REQ_POST)
+ if (uclient_request_supports_body(uh->req_type))
ustream_printf(uh->us, "Transfer-Encoding: chunked\r\n");
uclient_http_add_auth_header(uh);
ustream_printf(uh->us, "\r\n");
+
+ uh->state = HTTP_STATE_HEADERS_SENT;
}
static void uclient_http_headers_complete(struct uclient_http *uh)
{
enum auth_type auth_type = uh->auth_type;
+ int seq = uh->uc.seq;
uh->state = HTTP_STATE_RECV_DATA;
uh->uc.meta = uh->meta.head;
uclient_http_process_headers(uh);
- if (auth_type == AUTH_TYPE_UNKNOWN) {
- uclient_http_init_request(uh);
+ if (auth_type == AUTH_TYPE_UNKNOWN && uh->uc.status_code == 401 &&
+ (uh->req_type == REQ_HEAD || uh->req_type == REQ_GET)) {
+ uclient_http_connect(&uh->uc);
uclient_http_send_headers(uh);
uh->state = HTTP_STATE_REQUEST_DONE;
return;
if (uh->uc.cb->header_done)
uh->uc.cb->header_done(&uh->uc);
- if (uh->req_type == REQ_HEAD) {
+ if (uh->eof || seq != uh->uc.seq)
+ return;
+
+ if (uh->req_type == REQ_HEAD || uh->uc.status_code == 204) {
uh->eof = true;
uclient_notify_eof(uh);
}
if (uh->state == HTTP_STATE_REQUEST_DONE) {
char *code;
+ if (!strlen(data))
+ return;
+
/* HTTP/1.1 */
strsep(&data, " ");
static void __uclient_notify_read(struct uclient_http *uh)
{
struct uclient *uc = &uh->uc;
+ unsigned int seq = uh->seq;
char *data;
int len;
- if (uh->state < HTTP_STATE_REQUEST_DONE)
+ if (uh->state < HTTP_STATE_REQUEST_DONE || uh->state == HTTP_STATE_ERROR)
return;
data = ustream_get_read_buf(uh->us, &len);
return;
if (uh->state < HTTP_STATE_RECV_DATA) {
- char *sep;
+ char *sep, *next;
int cur_len;
do {
- sep = strstr(data, "\r\n");
+ sep = strchr(data, '\n');
if (!sep)
break;
+ next = sep + 1;
+ if (sep > data && sep[-1] == '\r')
+ sep--;
+
/* Check for multi-line HTTP headers */
if (sep > data) {
- if (!sep[2])
+ if (!*next)
return;
- if (isspace(sep[2]) && sep[2] != '\r') {
+ if (isspace(*next) && *next != '\r' && *next != '\n') {
sep[0] = ' ';
- sep[1] = ' ';
+ if (sep + 1 < next)
+ sep[1] = ' ';
continue;
}
}
*sep = 0;
- cur_len = sep + 2 - data;
+ cur_len = next - data;
uclient_parse_http_line(uh, data);
+ if (seq != uh->seq)
+ return;
+
ustream_consume(uh->us, cur_len);
len -= cur_len;
+ if (uh->eof)
+ return;
+
data = ustream_get_read_buf(uh->us, &len);
} while (data && uh->state < HTTP_STATE_RECV_DATA);
return;
}
- if (uh->state == HTTP_STATE_RECV_DATA && uc->cb->data_read)
- uc->cb->data_read(uc);
+ if (uh->eof)
+ return;
+
+ if (uh->state == HTTP_STATE_RECV_DATA) {
+ /* Now it's uclient user turn to read some data */
+ uloop_timeout_cancel(&uc->connection_timeout);
+
+ if (uc->cb->data_read)
+ uc->cb->data_read(uc);
+ }
+}
+
+static void __uclient_notify_write(struct uclient_http *uh)
+{
+ struct uclient *uc = &uh->uc;
+
+ if (uc->cb->data_sent)
+ uc->cb->data_sent(uc);
}
static void uclient_notify_read(struct ustream *us, int bytes)
__uclient_notify_read(uh);
}
+static void uclient_notify_write(struct ustream *us, int bytes)
+{
+ struct uclient_http *uh = container_of(us, struct uclient_http, ufd.stream);
+
+ __uclient_notify_write(uh);
+}
+
static void uclient_notify_state(struct ustream *us)
{
struct uclient_http *uh = container_of(us, struct uclient_http, ufd.stream);
+ if (uh->ufd.stream.write_error) {
+ uclient_http_error(uh, UCLIENT_ERROR_CONNECT);
+ return;
+ }
uclient_notify_eof(uh);
}
int ret;
uh->us = us;
+ uh->ssl = false;
+
us->string_data = true;
us->notify_state = uclient_notify_state;
us->notify_read = uclient_notify_read;
+ us->notify_write = uclient_notify_write;
ret = uclient_do_connect(uh, "80");
if (ret)
- return ret;
+ return UCLIENT_ERROR_CONNECT;
return 0;
}
__uclient_notify_read(uh);
}
+static void uclient_ssl_notify_write(struct ustream *us, int bytes)
+{
+ struct uclient_http *uh = container_of(us, struct uclient_http, ussl.stream);
+
+ __uclient_notify_write(uh);
+}
+
static void uclient_ssl_notify_state(struct ustream *us)
{
struct uclient_http *uh = container_of(us, struct uclient_http, ussl.stream);
uclient_notify_eof(uh);
}
+static void uclient_ssl_notify_error(struct ustream_ssl *ssl, int error, const char *str)
+{
+ struct uclient_http *uh = container_of(ssl, struct uclient_http, ussl);
+
+ uclient_http_error(uh, UCLIENT_ERROR_CONNECT);
+}
+
+static void uclient_ssl_notify_verify_error(struct ustream_ssl *ssl, int error, const char *str)
+{
+ struct uclient_http *uh = container_of(ssl, struct uclient_http, ussl);
+
+ if (!uh->ssl_require_validation)
+ return;
+
+ uclient_http_error(uh, UCLIENT_ERROR_SSL_INVALID_CERT);
+}
+
+static void uclient_ssl_notify_connected(struct ustream_ssl *ssl)
+{
+ struct uclient_http *uh = container_of(ssl, struct uclient_http, ussl);
+
+ if (!uh->ssl_require_validation)
+ return;
+
+ if (!uh->ussl.valid_cn)
+ uclient_http_error(uh, UCLIENT_ERROR_SSL_CN_MISMATCH);
+}
+
static int uclient_setup_https(struct uclient_http *uh)
{
struct ustream *us = &uh->ussl.stream;
uh->ssl = true;
uh->us = us;
+ if (!uh->ssl_ctx)
+ return UCLIENT_ERROR_MISSING_SSL_CONTEXT;
+
ret = uclient_do_connect(uh, "443");
if (ret)
- return ret;
-
- if (!ssl_ctx)
- ssl_ctx = ustream_ssl_context_new(false);
+ return UCLIENT_ERROR_CONNECT;
us->string_data = true;
us->notify_state = uclient_ssl_notify_state;
us->notify_read = uclient_ssl_notify_read;
- ustream_ssl_init(&uh->ussl, &uh->ufd.stream, ssl_ctx, false);
+ us->notify_write = uclient_ssl_notify_write;
+ uh->ussl.notify_error = uclient_ssl_notify_error;
+ uh->ussl.notify_verify_error = uclient_ssl_notify_verify_error;
+ uh->ussl.notify_connected = uclient_ssl_notify_connected;
+ uh->ussl.server_name = uh->uc.url->host;
+ uh->ssl_ops->init(&uh->ussl, &uh->ufd.stream, uh->ssl_ctx, false);
+ uh->ssl_ops->set_peer_cn(&uh->ussl, uh->uc.url->host);
return 0;
}
static int uclient_http_connect(struct uclient *cl)
{
struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
+ int ret;
+
+ if (!cl->eof || uh->disconnect || uh->connection_close)
+ uclient_http_disconnect(uh);
uclient_http_init_request(uh);
uh->ssl = cl->url->prefix == PREFIX_HTTPS;
if (uh->ssl)
- return uclient_setup_https(uh);
+ ret = uclient_setup_https(uh);
else
- return uclient_setup_http(uh);
+ ret = uclient_setup_http(uh);
+
+ return ret;
+}
+
+static void uclient_http_disconnect_cb(struct uloop_timeout *timeout)
+{
+ struct uclient_http *uh = container_of(timeout, struct uclient_http, disconnect_t);
+
+ uclient_http_disconnect(uh);
}
static struct uclient *uclient_http_alloc(void)
struct uclient_http *uh;
uh = calloc_a(sizeof(*uh));
+ uh->disconnect_t.cb = uclient_http_disconnect_cb;
blob_buf_init(&uh->headers, 0);
return &uh->uc;
}
+static void uclient_http_free_ssl_ctx(struct uclient_http *uh)
+{
+ uh->ssl_ops = NULL;
+ uh->ssl_ctx = NULL;
+}
+
static void uclient_http_free(struct uclient *cl)
{
struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
uclient_http_free_url_state(cl);
+ uclient_http_free_ssl_ctx(uh);
blob_buf_free(&uh->headers);
blob_buf_free(&uh->meta);
free(uh);
}
int
-uclient_http_reset_headers(struct uclient *cl, const char *name, const char *value)
+uclient_http_reset_headers(struct uclient *cl)
{
struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
}
static int
-uclient_http_send_data(struct uclient *cl, char *buf, unsigned int len)
+uclient_http_send_data(struct uclient *cl, const char *buf, unsigned int len)
{
struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
uclient_http_send_headers(uh);
- ustream_printf(uh->us, "%X\r\n", len);
- if (len > 0)
+ if (len > 0) {
+ ustream_printf(uh->us, "%X\r\n", len);
ustream_write(uh->us, buf, len, false);
- ustream_printf(uh->us, "\r\n");
+ ustream_printf(uh->us, "\r\n");
+ }
return len;
}
return -1;
uclient_http_send_headers(uh);
+ if (uclient_request_supports_body(uh->req_type))
+ ustream_printf(uh->us, "0\r\n\r\n");
uh->state = HTTP_STATE_REQUEST_DONE;
return 0;
read_len += sep + 2 - data;
data = sep + 2;
- if (!uh->read_chunked)
+ if (!uh->read_chunked) {
uh->eof = true;
+ uh->uc.data_eof = true;
+ }
}
if (len > data_end - data)
len = uh->content_length;
uh->content_length -= len;
- if (!uh->content_length)
+ if (!uh->content_length) {
uh->eof = true;
+ uh->uc.data_eof = true;
+ }
}
if (len > 0) {
uclient_notify_eof(uh);
+ /* Now that we consumed something and if this isn't EOF, start timer again */
+ if (!uh->uc.eof && !cl->connection_timeout.pending)
+ uloop_timeout_set(&cl->connection_timeout, cl->timeout_msecs);
+
return len;
}
-const struct uclient_backend uclient_backend_http __hidden = {
+int uclient_http_redirect(struct uclient *cl)
+{
+ struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
+ struct blobmsg_policy location = {
+ .name = "location",
+ .type = BLOBMSG_TYPE_STRING,
+ };
+ struct uclient_url *url = cl->url;
+ struct blob_attr *tb;
+
+ if (cl->backend != &uclient_backend_http)
+ return false;
+
+ switch (cl->status_code) {
+ case 301:
+ case 302:
+ case 307:
+ break;
+ default:
+ return false;
+ }
+
+ blobmsg_parse(&location, 1, &tb, blob_data(uh->meta.head), blob_len(uh->meta.head));
+ if (!tb)
+ return false;
+
+ url = uclient_get_url_location(url, blobmsg_data(tb));
+ if (!url)
+ return false;
+
+ free(cl->url);
+ cl->url = url;
+ if (uclient_http_connect(cl))
+ return -1;
+
+ uclient_http_request_done(cl);
+
+ return true;
+}
+
+int uclient_http_set_ssl_ctx(struct uclient *cl, const struct ustream_ssl_ops *ops,
+ struct ustream_ssl_ctx *ctx, bool require_validation)
+{
+ struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
+
+ if (cl->backend != &uclient_backend_http)
+ return -1;
+
+ uclient_http_free_url_state(cl);
+
+ uclient_http_free_ssl_ctx(uh);
+ uh->ssl_ops = ops;
+ uh->ssl_ctx = ctx;
+ uh->ssl_require_validation = !!ctx && require_validation;
+
+ return 0;
+}
+
+int uclient_http_set_address_family(struct uclient *cl, int af)
+{
+ struct uclient_http *uh = container_of(cl, struct uclient_http, uc);
+
+ if (cl->backend != &uclient_backend_http)
+ return -1;
+
+ switch (af) {
+ case AF_INET:
+ uh->usock_flags = USOCK_IPV4ONLY;
+ break;
+ case AF_INET6:
+ uh->usock_flags = USOCK_IPV6ONLY;
+ break;
+ default:
+ uh->usock_flags = 0;
+ break;
+ }
+
+ return 0;
+}
+
+const struct uclient_backend uclient_backend_http = {
.prefix = uclient_http_prefix,
.alloc = uclient_http_alloc,
.free = uclient_http_free,
.connect = uclient_http_connect,
+ .disconnect = uclient_http_request_disconnect,
.update_url = uclient_http_free_url_state,
+ .update_proxy_url = uclient_http_free_url_state,
.read = uclient_http_read,
.write = uclient_http_send_data,
projects / project / uclient.git / blobdiff