minix/test/test11.c

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C
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2005-04-21 16:53:53 +02:00
/* test 11 */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#define ITERATIONS 10
#define MAX_ERROR 1
int errct, subtest;
char *envp[3] = {"spring", "summer", 0};
char *passwd_file = "/etc/passwd";
_PROTOTYPE(int main, (int argc, char *argv[]));
_PROTOTYPE(void test11a, (void));
_PROTOTYPE(void test11b, (void));
_PROTOTYPE(void test11c, (void));
_PROTOTYPE(void test11d, (void));
_PROTOTYPE(void e, (int n));
int main(argc, argv)
int argc;
char *argv[];
{
int i, m = 0xFFFF;
if (argc == 2) m = atoi(argv[1]);
printf("Test 11 ");
fflush(stdout); /* have to flush for child's benefit */
if (geteuid() != 0) {
printf("must be setuid root; test aborted\n");
exit(1);
}
if (getuid() == 0) {
printf("must be setuid root logged in as someone else; test aborted\n");
exit(1);
}
/*
system("rm -rf DIR_11; mkdir DIR_11");
chdir("DIR_11");
*/
for (i = 0; i < ITERATIONS; i++) {
if (m & 0001) test11a();
if (m & 0002) test11b();
if (m & 0004) test11c();
if (m & 0010) test11d();
}
if (errct == 0)
printf("ok\n");
else
printf(" %d errors\n", errct);
/*
chdir("..");
system("rm -rf DIR_11");
*/
return(0);
}
void test11a()
{
/* Test exec */
int n, fd;
char aa[4];
subtest = 1;
if (fork()) {
wait(&n);
if (n != 25600) e(1);
unlink("t1");
unlink("t2");
} else {
if (chown("t11a", 10, 20) < 0) e(2);
chmod("t11a", 0666);
/* The following call should fail because the mode has no X
* bits on. If a bug lets it unexpectedly succeed, the child
* will print an error message since the arguments are wrong.
*/
execl("t11a", (char *) 0, envp); /* should fail -- no X bits */
/* Control should come here after the failed execl(). */
chmod("t11a", 06555);
if ((fd = creat("t1", 0600)) != 3) e(3);
if (close(fd) < 0) e(4);
if (open("t1", O_RDWR) != 3) e(5);
if (chown("t1", 10, 99) < 0) e(6);
if ((fd = creat("t2", 0060)) != 4) e(7);
if (close(fd) < 0) e(8);
if (open("t2", O_RDWR) != 4) e(9);
if (chown("t2", 99, 20) < 0) e(10);
if (setgid(6) < 0) e(11);
if (setuid(5) < 0) e(12);
if (getuid() != 5) e(13);
if (geteuid() != 5) e(14);
if (getgid() != 6) e(15);
if (getegid() != 6) e(16);
aa[0] = 3;
aa[1] = 5;
aa[2] = 7;
aa[3] = 9;
if (write(3, aa, 4) != 4) e(17);
lseek(3, 2L, 0);
execle("t11a", "t11a", "arg0", "arg1", "arg2", (char *) 0, envp);
e(18);
printf("Can't exec t11a\n");
exit(3);
}
}
void test11b()
{
int n;
char *argv[5];
subtest = 2;
if (fork()) {
wait(&n);
if (n != (75 << 8)) e(20);
} else {
/* Child tests execv. */
argv[0] = "t11b";
argv[1] = "abc";
argv[2] = "defghi";
argv[3] = "j";
argv[4] = 0;
execv("t11b", argv);
e(19);
}
}
void test11c()
{
/* Test getlogin() and cuserid(). This test MUST run setuid root. */
int n, etc_uid;
uid_t ruid, euid;
char *lnamep, *cnamep, *p;
char array[L_cuserid], save[L_cuserid], save2[L_cuserid];
FILE *stream;
subtest = 3;
errno = -2000; /* None of these calls set errno. */
array[0] = '@';
array[1] = '0';
save[0] = '#';
save[1] = '0';
ruid = getuid();
euid = geteuid();
lnamep = getlogin();
strcpy(save, lnamep);
cnamep = cuserid(array);
strcpy(save2, cnamep);
/* Because we are setuid root, cuser == array == 'root'; login != 'root' */
if (euid != 0) e(1);
if (ruid == 0) e(2);
if (strcmp(cnamep, "root") != 0) e(3);
if (strcmp(array, "root") != 0) e(4);
if ( (n = strlen(save)) == 0) e(5);
if (strcmp(save, cnamep) == 0) e(6); /* they must be different */
cnamep = cuserid(NULL);
if (strcmp(cnamep, save2) != 0) e(7);
/* Check login against passwd file. First lookup login in /etc/passwd. */
if (n == 0) return; /* if login not found, don't look it up */
if ( (stream = fopen(passwd_file, "r")) == NULL) e(8);
while (fgets(array, L_cuserid, stream) != NULL) {
if (strncmp(array, save, n) == 0) {
p = &array[0]; /* hunt for uid */
while (*p != ':') p++;
p++;
while (*p != ':') p++;
p++; /* p now points to uid */
etc_uid = atoi(p);
if (etc_uid != ruid) e(9);
break; /* 1 entry per login please */
}
}
fclose(stream);
}
void test11d()
{
int fd;
struct stat statbuf;
subtest = 4;
fd = creat("T11.1", 0750);
if (fd < 0) e(1);
if (chown("T11.1", 8, 1) != 0) e(2);
if (chmod("T11.1", 0666) != 0) e(3);
if (stat("T11.1", &statbuf) != 0) e(4);
if ((statbuf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) != 0666) e(5);
if (close(fd) != 0) e(6);
if (unlink("T11.1") != 0) e(7);
}
void e(n)
int n;
{
int err_num = errno; /* save errno in case printf clobbers it */
printf("Subtest %d, error %d errno=%d ", subtest, n, errno);
errno = err_num; /* restore errno, just in case */
perror("");
if (errct++ > MAX_ERROR) {
printf("Too many errors; test aborted\n");
chdir("..");
system("rm -rf DIR*");
exit(1);
}
}