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Diffstat (limited to '3rdparty/libuv/samples/socks5-proxy/server.c')
-rw-r--r--3rdparty/libuv/samples/socks5-proxy/server.c241
1 files changed, 241 insertions, 0 deletions
diff --git a/3rdparty/libuv/samples/socks5-proxy/server.c b/3rdparty/libuv/samples/socks5-proxy/server.c
new file mode 100644
index 00000000000..3f1ba42c9e1
--- /dev/null
+++ b/3rdparty/libuv/samples/socks5-proxy/server.c
@@ -0,0 +1,241 @@
+/* Copyright StrongLoop, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "defs.h"
+#include <netinet/in.h> /* INET6_ADDRSTRLEN */
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef INET6_ADDRSTRLEN
+# define INET6_ADDRSTRLEN 63
+#endif
+
+typedef struct {
+ uv_getaddrinfo_t getaddrinfo_req;
+ server_config config;
+ server_ctx *servers;
+ uv_loop_t *loop;
+} server_state;
+
+static void do_bind(uv_getaddrinfo_t *req, int status, struct addrinfo *ai);
+static void on_connection(uv_stream_t *server, int status);
+
+int server_run(const server_config *cf, uv_loop_t *loop) {
+ struct addrinfo hints;
+ server_state state;
+ int err;
+
+ memset(&state, 0, sizeof(state));
+ state.servers = NULL;
+ state.config = *cf;
+ state.loop = loop;
+
+ /* Resolve the address of the interface that we should bind to.
+ * The getaddrinfo callback starts the server and everything else.
+ */
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_protocol = IPPROTO_TCP;
+
+ err = uv_getaddrinfo(loop,
+ &state.getaddrinfo_req,
+ do_bind,
+ cf->bind_host,
+ NULL,
+ &hints);
+ if (err != 0) {
+ pr_err("getaddrinfo: %s", uv_strerror(err));
+ return err;
+ }
+
+ /* Start the event loop. Control continues in do_bind(). */
+ if (uv_run(loop, UV_RUN_DEFAULT)) {
+ abort();
+ }
+
+ /* Please Valgrind. */
+ uv_loop_delete(loop);
+ free(state.servers);
+ return 0;
+}
+
+/* Bind a server to each address that getaddrinfo() reported. */
+static void do_bind(uv_getaddrinfo_t *req, int status, struct addrinfo *addrs) {
+ char addrbuf[INET6_ADDRSTRLEN + 1];
+ unsigned int ipv4_naddrs;
+ unsigned int ipv6_naddrs;
+ server_state *state;
+ server_config *cf;
+ struct addrinfo *ai;
+ const void *addrv;
+ const char *what;
+ uv_loop_t *loop;
+ server_ctx *sx;
+ unsigned int n;
+ int err;
+ union {
+ struct sockaddr addr;
+ struct sockaddr_in addr4;
+ struct sockaddr_in6 addr6;
+ } s;
+
+ state = CONTAINER_OF(req, server_state, getaddrinfo_req);
+ loop = state->loop;
+ cf = &state->config;
+
+ if (status < 0) {
+ pr_err("getaddrinfo(\"%s\"): %s", cf->bind_host, uv_strerror(status));
+ uv_freeaddrinfo(addrs);
+ return;
+ }
+
+ ipv4_naddrs = 0;
+ ipv6_naddrs = 0;
+ for (ai = addrs; ai != NULL; ai = ai->ai_next) {
+ if (ai->ai_family == AF_INET) {
+ ipv4_naddrs += 1;
+ } else if (ai->ai_family == AF_INET6) {
+ ipv6_naddrs += 1;
+ }
+ }
+
+ if (ipv4_naddrs == 0 && ipv6_naddrs == 0) {
+ pr_err("%s has no IPv4/6 addresses", cf->bind_host);
+ uv_freeaddrinfo(addrs);
+ return;
+ }
+
+ state->servers =
+ xmalloc((ipv4_naddrs + ipv6_naddrs) * sizeof(state->servers[0]));
+
+ n = 0;
+ for (ai = addrs; ai != NULL; ai = ai->ai_next) {
+ if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6) {
+ continue;
+ }
+
+ if (ai->ai_family == AF_INET) {
+ s.addr4 = *(const struct sockaddr_in *) ai->ai_addr;
+ s.addr4.sin_port = htons(cf->bind_port);
+ addrv = &s.addr4.sin_addr;
+ } else if (ai->ai_family == AF_INET6) {
+ s.addr6 = *(const struct sockaddr_in6 *) ai->ai_addr;
+ s.addr6.sin6_port = htons(cf->bind_port);
+ addrv = &s.addr6.sin6_addr;
+ } else {
+ UNREACHABLE();
+ }
+
+ if (uv_inet_ntop(s.addr.sa_family, addrv, addrbuf, sizeof(addrbuf))) {
+ UNREACHABLE();
+ }
+
+ sx = state->servers + n;
+ sx->loop = loop;
+ sx->idle_timeout = state->config.idle_timeout;
+ CHECK(0 == uv_tcp_init(loop, &sx->tcp_handle));
+
+ what = "uv_tcp_bind";
+ err = uv_tcp_bind(&sx->tcp_handle, &s.addr, 0);
+ if (err == 0) {
+ what = "uv_listen";
+ err = uv_listen((uv_stream_t *) &sx->tcp_handle, 128, on_connection);
+ }
+
+ if (err != 0) {
+ pr_err("%s(\"%s:%hu\"): %s",
+ what,
+ addrbuf,
+ cf->bind_port,
+ uv_strerror(err));
+ while (n > 0) {
+ n -= 1;
+ uv_close((uv_handle_t *) (state->servers + n), NULL);
+ }
+ break;
+ }
+
+ pr_info("listening on %s:%hu", addrbuf, cf->bind_port);
+ n += 1;
+ }
+
+ uv_freeaddrinfo(addrs);
+}
+
+static void on_connection(uv_stream_t *server, int status) {
+ server_ctx *sx;
+ client_ctx *cx;
+
+ CHECK(status == 0);
+ sx = CONTAINER_OF(server, server_ctx, tcp_handle);
+ cx = xmalloc(sizeof(*cx));
+ CHECK(0 == uv_tcp_init(sx->loop, &cx->incoming.handle.tcp));
+ CHECK(0 == uv_accept(server, &cx->incoming.handle.stream));
+ client_finish_init(sx, cx);
+}
+
+int can_auth_none(const server_ctx *sx, const client_ctx *cx) {
+ return 1;
+}
+
+int can_auth_passwd(const server_ctx *sx, const client_ctx *cx) {
+ return 0;
+}
+
+int can_access(const server_ctx *sx,
+ const client_ctx *cx,
+ const struct sockaddr *addr) {
+ const struct sockaddr_in6 *addr6;
+ const struct sockaddr_in *addr4;
+ const uint32_t *p;
+ uint32_t a;
+ uint32_t b;
+ uint32_t c;
+ uint32_t d;
+
+ /* TODO(bnoordhuis) Implement proper access checks. For now, just reject
+ * traffic to localhost.
+ */
+ if (addr->sa_family == AF_INET) {
+ addr4 = (const struct sockaddr_in *) addr;
+ d = ntohl(addr4->sin_addr.s_addr);
+ return (d >> 24) != 0x7F;
+ }
+
+ if (addr->sa_family == AF_INET6) {
+ addr6 = (const struct sockaddr_in6 *) addr;
+ p = (const uint32_t *) &addr6->sin6_addr.s6_addr;
+ a = ntohl(p[0]);
+ b = ntohl(p[1]);
+ c = ntohl(p[2]);
+ d = ntohl(p[3]);
+ if (a == 0 && b == 0 && c == 0 && d == 1) {
+ return 0; /* "::1" style address. */
+ }
+ if (a == 0 && b == 0 && c == 0xFFFF && (d >> 24) == 0x7F) {
+ return 0; /* "::ffff:127.x.x.x" style address. */
+ }
+ return 1;
+ }
+
+ return 0;
+}