Userland: Move command-line utilities to Userland/Utilities/

Userland/Utilities/test-bindtodevice.cpp

@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <AK/Function.h>
+#include <AK/IPv4Address.h>
+#include <net/if.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+
+static void test_invalid(int);
+static void test_no_route(int);
+static void test_valid(int);
+static void test_send(int);
+
+static void test(AK::Function<void(int)> test_fn)
+{
+
+    int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+    if (fd < 0) {
+        perror("socket");
+        return;
+    }
+
+    test_fn(fd);
+
+    // be a responsible boi
+    close(fd);
+}
+
+auto main() -> int
+{
+    test(test_invalid);
+    test(test_valid);
+    test(test_no_route);
+    test(test_send);
+}
+
+void test_invalid(int fd)
+{
+    // bind to an interface that does not exist
+    char buf[IFNAMSIZ];
+    socklen_t buflen = IFNAMSIZ;
+    memcpy(buf, "foodev", 7);
+
+    if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, buf, buflen) < 0) {
+        perror("setsockopt(SO_BINDTODEVICE) :: invalid (Should fail with ENODEV)");
+        puts("PASS invalid");
+    } else {
+        puts("FAIL invalid");
+    }
+}
+
+void test_valid(int fd)
+{
+    // bind to an interface that exists
+    char buf[IFNAMSIZ];
+    socklen_t buflen = IFNAMSIZ;
+    memcpy(buf, "loop0", 6);
+
+    if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, buf, buflen) < 0) {
+        perror("setsockopt(SO_BINDTODEVICE) :: valid");
+        puts("FAIL valid");
+    } else {
+        puts("PASS valid");
+    }
+}
+
+void test_no_route(int fd)
+{
+    // bind to an interface that cannot deliver
+    char buf[IFNAMSIZ];
+    socklen_t buflen = IFNAMSIZ;
+    memcpy(buf, "loop0", 6);
+
+    if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, buf, buflen) < 0) {
+        perror("setsockopt(SO_BINDTODEVICE) :: no_route");
+        puts("FAIL no_route");
+        return;
+    }
+    sockaddr_in sin;
+    memset(&sin, 0, sizeof(sin));
+
+    sin.sin_addr.s_addr = IPv4Address { 10, 0, 2, 15 }.to_u32();
+    sin.sin_port = 8080;
+    sin.sin_family = AF_INET;
+
+    if (bind(fd, (sockaddr*)&sin, sizeof(sin)) < 0) {
+        perror("bind() :: no_route");
+        puts("FAIL no_route");
+        return;
+    }
+
+    if (sendto(fd, "TEST", 4, 0, (sockaddr*)&sin, sizeof(sin)) < 0) {
+        perror("sendto() :: no_route (Should fail with EHOSTUNREACH)");
+        puts("PASS no_route");
+    } else
+        puts("FAIL no_route");
+}
+
+void test_send(int fd)
+{
+    // bind to an interface that cannot deliver
+    char buf[IFNAMSIZ];
+    socklen_t buflen = IFNAMSIZ;
+    memcpy(buf, "e1k0", 5);
+
+    if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, buf, buflen) < 0) {
+        perror("setsockopt(SO_BINDTODEVICE) :: send");
+        puts("FAIL send");
+        return;
+    }
+    sockaddr_in sin;
+    memset(&sin, 0, sizeof(sin));
+
+    sin.sin_addr.s_addr = IPv4Address { 10, 0, 2, 15 }.to_u32();
+    sin.sin_port = 8080;
+    sin.sin_family = AF_INET;
+
+    if (bind(fd, (sockaddr*)&sin, sizeof(sin)) < 0) {
+        perror("bind() :: send");
+        puts("FAIL send");
+        return;
+    }
+
+    if (sendto(fd, "TEST", 4, 0, (sockaddr*)&sin, sizeof(sin)) < 0) {
+        perror("sendto() :: send");
+        puts("FAIL send");
+        return;
+    }
+    puts("PASS send");
+}