1 /*
2 * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification,
5 * are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright notice, this list of
8 * conditions and the following disclaimer.
9 *
10 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
11 * of conditions and the following disclaimer in the documentation and/or other materials
12 * provided with the distribution.
13 *
14 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
15 * to endorse or promote products derived from this software without specific prior written
16 * permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
22 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
27 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
28 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30 #include <arpa/inet.h>
31 #include <net/if.h>
32 #include "It_container_test.h"
33
34 using namespace std;
35 static const int IpLen = 16;
36 static const char *NETMASK = "255.255.255.0";
37 static const char *GW = "192.168.100.1";
38 static const char *IFNAME = "veth0";
39 static const char *PEER_IP = "192.168.100.5";
40
SetIP(char * ip)41 static int SetIP(char *ip)
42 {
43 struct ifreq ifr;
44 int fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
45 if (fd < 0) {
46 return -1;
47 }
48 int ret = strncpy_s(ifr.ifr_name, sizeof(ifr.ifr_name), "eth0", IFNAMSIZ);
49 if (ret != EOK) {
50 (void)close(fd);
51 return -1;
52 }
53 ifr.ifr_addr.sa_family = AF_INET;
54 inet_pton(AF_INET, ip, ifr.ifr_addr.sa_data + 2); /* 2: offset */
55 ret = ioctl(fd, SIOCSIFADDR, &ifr);
56 if (ret != 0) {
57 printf("[ERR][%s:%d] ioctl SIOCSIFADDR failed, %s!\n", __FUNCTION__, __LINE__, strerror(errno));
58 (void)close(fd);
59 return -1;
60 }
61 ret = close(fd);
62 if (ret != 0) {
63 return -1;
64 }
65 return 0;
66 }
67
ChildFunc(void * arg)68 static int ChildFunc(void *arg)
69 {
70 (void)arg;
71 int ret;
72 char oldIp[IpLen] = {NULL};
73 char newIp[IpLen] = {NULL};
74
75 ret = NetContainerGetLocalIP("eth0", oldIp, IpLen);
76 if (ret != 0) {
77 return EXIT_CODE_ERRNO_1;
78 }
79
80 ret = unshare(CLONE_NEWNET);
81 if (ret < 0) {
82 return EXIT_CODE_ERRNO_2;
83 }
84
85 ret = NetContainerGetLocalIP("eth0", newIp, IpLen);
86 if (ret == 0) {
87 return EXIT_CODE_ERRNO_3;
88 }
89
90 ret = SetIP("192.168.1.234");
91 if (ret == 0) {
92 return EXIT_CODE_ERRNO_4;
93 }
94
95 ret = NetContainerResetNetAddr(IFNAME, PEER_IP, NETMASK, GW);
96 if (ret != 0) {
97 return EXIT_CODE_ERRNO_5;
98 }
99
100 (void)memset_s(newIp, IpLen, 0, IpLen);
101 ret = NetContainerGetLocalIP(IFNAME, newIp, IpLen);
102 if (ret != 0) {
103 return EXIT_CODE_ERRNO_6;
104 }
105
106 if (strcmp(PEER_IP, newIp) != 0) {
107 return EXIT_CODE_ERRNO_7;
108 }
109 printf("######## [%s:%d] %s: %s ########\n", __FUNCTION__, __LINE__, IFNAME, newIp);
110 return 0;
111 }
112
ItNetContainer002(void)113 void ItNetContainer002(void)
114 {
115 int ret;
116 char oldIp[IpLen] = {NULL};
117 char newIp[IpLen] = {NULL};
118
119 char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, CLONE_STACK_MMAP_FLAG, -1, 0);
120 EXPECT_STRNE(stack, NULL);
121 char *stackTop = stack + STACK_SIZE;
122
123 ret = NetContainerGetLocalIP("eth0", oldIp, IpLen);
124 ASSERT_EQ(ret, 0);
125
126 auto pid = clone(ChildFunc, stackTop, SIGCHLD, NULL);
127 ASSERT_NE(pid, -1);
128
129 int status;
130 ret = waitpid(pid, &status, 0);
131 ASSERT_EQ(ret, pid);
132
133 int exitCode = WEXITSTATUS(status);
134 ASSERT_EQ(exitCode, 0);
135
136 ret = NetContainerGetLocalIP("eth0", newIp, IpLen);
137 ASSERT_EQ(ret, 0);
138
139 ret = strcmp(oldIp, newIp);
140 ASSERT_EQ(ret, 0);
141 }
142