1 /* $NetBSD: realpath.c,v 1.2 2024/08/18 20:47:27 christos Exp $ */
2
3 #include "config.h"
4
5 #include "ntp_stdlib.h"
6 #include "unity.h"
7
8 #include <sys/types.h>
9 #include <sys/stat.h>
10 #include <unistd.h>
11 #include <dirent.h>
12 #include <stdarg.h>
13
14 static char * resolved;
15
16 void setUp(void);
setUp(void)17 void setUp(void) {
18 resolved = NULL;
19 }
20
21 void tearDown(void);
tearDown(void)22 void tearDown(void) {
23 free(resolved);
24 resolved = NULL;
25 }
26
isValidAbsPath(const char * path)27 static int/*BOOL*/ isValidAbsPath(const char * path)
28 {
29 int retv = FALSE;
30 /* this needs some elaboration: */
31 if (path && path[0] == '/') {
32 struct stat sb;
33 if (0 == lstat(path, &sb)) {
34 retv = (sb.st_mode & S_IFMT) != S_IFLNK;
35 }
36 }
37 return retv;
38 }
39
errMsg(const char * fmt,...)40 static const char * errMsg(const char *fmt, ...)
41 {
42 static char buf[256];
43 va_list va;
44 va_start(va, fmt);
45 vsnprintf(buf, sizeof(buf), fmt, va);
46 va_end(va);
47 return buf;
48 }
49
50 void test_CurrentWorkingDir(void);
test_CurrentWorkingDir(void)51 void test_CurrentWorkingDir(void) {
52 # ifdef SYS_WINNT
53 TEST_IGNORE_MESSAGE("not applicable to windows so far");
54 # else
55 resolved = ntp_realpath(".");
56 TEST_ASSERT_NOT_NULL_MESSAGE(resolved, "failed to resolve '.'");
57 TEST_ASSERT_TRUE_MESSAGE(isValidAbsPath(resolved), "'.' not resolved to absolute path");
58 # endif
59 }
60
61 void test_DevLinks(void);
test_DevLinks(void)62 void test_DevLinks(void) {
63 # ifdef SYS_WINNT
64 TEST_IGNORE_MESSAGE("not applicable to windows so far");
65 # else
66 char nam[512];
67 char abs[512];
68 struct dirent * ent;
69 DIR * dfs = opendir("/dev");
70
71 TEST_ASSERT_NOT_NULL_MESSAGE(dfs, "failed to open '/dev' !?!");
72 while (NULL != (ent = readdir(dfs))) {
73 /* the /dev/std{in,out,err} symlinks are prone to some
74 * kind of race condition under Linux, so we better skip
75 * them here; running tests in parallel can fail mysteriously
76 * otherwise. (Dunno *how* this could happen, but it
77 * did at some point in time, quite reliably...)
78 */
79 if (!strncmp(ent->d_name, "std", 3))
80 continue;
81 /* otherwise build the full name & try to resolve: */
82 snprintf(nam, sizeof(nam), "/dev/%s", ent->d_name);
83 resolved = ntp_realpath(nam);
84 TEST_ASSERT_NOT_NULL_MESSAGE(resolved, errMsg("could not resolve '%s'", nam));
85 strlcpy(abs, resolved, sizeof(abs));
86 free(resolved);
87 resolved = NULL;
88 /* test/development code:
89 if (strcmp(nam, abs))
90 printf(" '%s' --> '%s'\n", nam, abs);
91 */
92 TEST_ASSERT_TRUE_MESSAGE(isValidAbsPath(abs), errMsg("could not validate '%s'", abs));
93 }
94 closedir(dfs);
95 # endif
96 }
97