1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <resolv.h>
17 #include <stdio.h>
18 #include <stdlib.h>
19
20 #include "test.h"
21
22 const char dname[] = "www.example.com";
23 const int class = C_IN;
24 const int type = T_TXT;
25 const char options[] = "options timeout:0";
26
set_timeout(void)27 void set_timeout(void)
28 {
29 system("cp /etc/resolv.conf /etc/resolv.conf.bak");
30
31 FILE *f = fopen(_PATH_RESCONF, "a+");
32 if (f == NULL) {
33 t_error("%s failed: fopen\n", __func__);
34 return;
35 }
36
37 fwrite(options, sizeof(options), 1, f);
38 fclose(f);
39 }
40
restore_conf(void)41 void restore_conf(void)
42 {
43 remove(_PATH_RESCONF);
44 rename("/etc/resolv.conf.bak", _PATH_RESCONF);
45 }
46
47 /**
48 * @tc.name : res_query_0100
49 * @tc.desc : query the name server
50 * @tc.level : Level 0
51 */
res_query_0100(void)52 void res_query_0100(void)
53 {
54 set_timeout();
55
56 unsigned char buf[BUFSIZ] = {0};
57 int result = res_query(dname, class, type, buf, sizeof(buf));
58 if (result != 0) {
59 t_error("%s failed: result = %d\n", __func__, result);
60 }
61
62 restore_conf();
63 }
64
65 /**
66 * @tc.name : res_query_0200
67 * @tc.desc : query the name server with an invalid type
68 * @tc.level : Level 2
69 */
res_query_0200(void)70 void res_query_0200(void)
71 {
72 set_timeout();
73
74 int result = res_query(dname, class, T_ANY + 1, NULL, 0);
75 if (result == 0) {
76 t_error("%s failed: result = %d\n", __func__, result);
77 }
78
79 restore_conf();
80 }
81
main(int argc,char * argv[])82 int main(int argc, char *argv[])
83 {
84 res_query_0100();
85 res_query_0200();
86
87 return t_status;
88 }
89