5977114c42
. make common.o link with the tests instead of being #included as common.c . fix warnings about missing prototypes by declaring functions static . reduces some duplicated code Change-Id: Ic2a765d7f5886add5863190efec3fdd2d2ea2137
267 lines
6.7 KiB
C
267 lines
6.7 KiB
C
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
|
|
int max_error = 5;
|
|
#include "common.h"
|
|
|
|
|
|
int subtest = -1;
|
|
|
|
void test_self(void);
|
|
void test_setnone(void);
|
|
void test_setuid(void);
|
|
void test_setgid(void);
|
|
void test_effugid(void);
|
|
int execute(const char *prog, const char *arg);
|
|
|
|
int execute(const char *prog, const char *arg)
|
|
{
|
|
pid_t childpid;
|
|
int status;
|
|
char cmd[30];
|
|
|
|
snprintf(cmd, sizeof(cmd), "./%s", prog);
|
|
|
|
childpid = fork();
|
|
if (childpid == (pid_t) -1) {
|
|
return(-2);
|
|
} else if (childpid == 0) {
|
|
if (execl(cmd, prog, arg, NULL) == -1) {
|
|
exit(-2);
|
|
}
|
|
return(-2); /* Never reached */
|
|
} else {
|
|
wait(&status);
|
|
}
|
|
|
|
return(WEXITSTATUS(status));
|
|
}
|
|
|
|
void test_setgid(void)
|
|
{
|
|
/* Execve a new process that has setgid bits set */
|
|
subtest = 3;
|
|
|
|
/* When we exec a new process which has setgid set, that process should
|
|
* be tainted.
|
|
*/
|
|
system("chmod 2755 setgid");
|
|
if (execute("setgid", "0000") != 1) e(2);
|
|
|
|
/* When we exec a new process which has setgid set, but unsets that bit
|
|
* before calling issetugid() should still be tainted
|
|
*/
|
|
system("chmod 2755 setgid");
|
|
if (execute("setgid", "0755") != 1) e(3);
|
|
|
|
/* When we exec a new process which has setgid set, and then also sets
|
|
* setuid before calling issetugid() should still be tainted
|
|
*/
|
|
system("chmod 2755 setgid");
|
|
if (execute("setgid", "06755") != 1) e(4);
|
|
|
|
/* When we exec a new process that has setgid set, and which upon
|
|
* execution forks, the forked child should also be tainted */
|
|
system("chmod 2755 setgidfork");
|
|
if (execute("setgidfork", "0000") != 1) e(5);
|
|
}
|
|
|
|
void test_setuid(void)
|
|
{
|
|
/* Execve a new process that has setuid bits set */
|
|
subtest = 4;
|
|
|
|
/* When we exec a new process which has setuid set, that process should
|
|
* be tainted.
|
|
*/
|
|
system("chmod 4755 setuid");
|
|
if (execute("setuid", "0000") != 1) e(1);
|
|
|
|
/* When we exec a new process which has setuid set, but unsets that bit
|
|
* before calling issetugid() should still be tainted
|
|
*/
|
|
system("chmod 4755 setuid");
|
|
if (execute("setuid", "0755") != 1) e(2);
|
|
|
|
/* When we exec a new process which has setuid set, and then also sets
|
|
* setgid before calling issetugid() should still be tainted
|
|
*/
|
|
system("chmod 4755 setuid");
|
|
if (execute("setuid", "06755") != 1) e(3);
|
|
|
|
/* When we exec a new process that has setgid set, and which upon
|
|
* execution forks, the forked child should also be tainted */
|
|
system("chmod 4755 setuidfork");
|
|
if (execute("setuidfork", "0000") != 1) e(4);
|
|
|
|
}
|
|
|
|
static void test_setugid(void)
|
|
{
|
|
/* Execve a new process that has setuid and setgid bits set */
|
|
subtest = 5;
|
|
|
|
/* When we exec a new process which has setugid set, that
|
|
* process should be tainted.
|
|
*/
|
|
system("chmod 6755 setugid");
|
|
if (execute("setugid", "0000") != 1) e(1);
|
|
|
|
/* When we exec a new process which has setugid set, but unsets those bits
|
|
* before calling issetugid() should still be tainted
|
|
*/
|
|
system("chmod 6755 setugid");
|
|
if (execute("setugid", "0755") != 1) e(2);
|
|
|
|
/* When we exec a new process that has setugid set, and which upon
|
|
* execution forks, the forked child should also be tainted */
|
|
system("chmod 6755 setugidfork");
|
|
if (execute("setugidfork", "0000") != 1) e(4);
|
|
|
|
}
|
|
|
|
void test_effugid(void)
|
|
{
|
|
/* Test taint status with different effective uid and gid */
|
|
pid_t childpid;
|
|
int status;
|
|
|
|
subtest = 6;
|
|
|
|
/* Start with effective uid */
|
|
childpid = fork();
|
|
if (childpid == (pid_t) -1) e(1);
|
|
else if (childpid == 0) {
|
|
/* We're the child */
|
|
|
|
/* We should be tainted */
|
|
if (issetugid() != 1) e(2);
|
|
|
|
/* Now execute a program without set{u,g}id; should not be tainted */
|
|
system("chmod 755 nobits");
|
|
if (execute("nobits", "0000") != 0) e(3);
|
|
|
|
/* Change effective uid into current+42 and try nobits again. This time
|
|
* it should be tainted */
|
|
if (seteuid(geteuid() + 42) != 0) e(4);
|
|
if (execute("nobits", "0000") != 1) e(5);
|
|
exit(EXIT_SUCCESS);
|
|
} else {
|
|
/* We're the parent, wait for the child to finish */
|
|
wait(&status);
|
|
}
|
|
|
|
/* Now test effective gid */
|
|
childpid = fork();
|
|
if (childpid == (pid_t) -1) e(1);
|
|
else if (childpid == 0) {
|
|
/* We're the child */
|
|
|
|
/* We should be tainted */
|
|
if (issetugid() != 1) e(2);
|
|
|
|
/* Now execute a program without set{u,g}id; should not be tainted */
|
|
system("chmod 755 nobits");
|
|
if (execute("nobits", "0000") != 0) e(3);
|
|
|
|
/* Change effective gid into current+42 and try nobits again. This time
|
|
* it should be tainted */
|
|
if (seteuid(getegid() + 42) != 0) e(4);
|
|
if (execute("nobits", "0000") != 1) e(5);
|
|
exit(EXIT_SUCCESS);
|
|
} else {
|
|
/* We're the parent, wait for the child to finish */
|
|
wait(&status);
|
|
}
|
|
}
|
|
|
|
void test_setnone(void)
|
|
{
|
|
/* Execve a new process that does not have setuid or setgid bits set */
|
|
subtest = 2;
|
|
|
|
/* When we exec a new process which doesn't have set{u,g}id set, that
|
|
* process should not be tainted */
|
|
system("chmod 755 nobits");
|
|
if (execute("nobits", "0000") != 0) e(2);
|
|
|
|
/* When we exec a new process which doesn't have set{u,g}id set, but
|
|
* sets them after execution, the process should still not be tainted
|
|
*/
|
|
system("chmod 755 nobits");
|
|
if (execute("nobits", "02755") != 0) e(4);
|
|
system("chmod 755 nobits");
|
|
if (execute("nobits", "04755") != 0) e(3);
|
|
system("chmod 755 nobits");
|
|
if (execute("nobits", "06755") != 0) e(5);
|
|
|
|
/* When we exec a new process that doesn't have setugid set, and which upon
|
|
* execution forks, the forked child should not be tainted either */
|
|
system("chmod 755 nobitsfork");
|
|
if (execute("nobitsfork", "0000") != 0) e(6);
|
|
}
|
|
|
|
void test_self(void)
|
|
{
|
|
/* We're supposed to be setuid. Verify. */
|
|
|
|
int status;
|
|
pid_t childpid;
|
|
|
|
subtest = 1;
|
|
|
|
if (issetugid() != 1) e(1);
|
|
childpid = fork();
|
|
if (childpid == -1) e(2);
|
|
else if (childpid == 0) {
|
|
/* We're the child and should inherit the tainted status of the parent
|
|
*/
|
|
if (issetugid() != 1) e(3);
|
|
|
|
/* Let's change to the bin user */
|
|
if (setuid((uid_t) 2) != 0) e(4);
|
|
if (getuid() != (uid_t) 2) e(5);
|
|
|
|
/* At this point, taint status should not have changed. */
|
|
if (issetugid() != 1) e(6);
|
|
|
|
exit(EXIT_SUCCESS);
|
|
} else {
|
|
/* We're the parent. Wait for the child to finish */
|
|
wait(&status);
|
|
}
|
|
}
|
|
|
|
static void switch_to_su(void)
|
|
{
|
|
subtest = 0;
|
|
if (setuid(0) != 0) e(1);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
start(60);
|
|
system("cp ../t60a nobits");
|
|
system("cp ../t60a setgid");
|
|
system("cp ../t60a setuid");
|
|
system("cp ../t60a setugid");
|
|
system("cp ../t60b nobitsfork");
|
|
system("cp ../t60b setuidfork");
|
|
system("cp ../t60b setgidfork");
|
|
system("cp ../t60b setugidfork");
|
|
|
|
switch_to_su(); /* We have to be root to perform this test */
|
|
test_self();
|
|
test_setnone();
|
|
test_setuid();
|
|
test_setgid();
|
|
test_setugid();
|
|
test_effugid();
|
|
|
|
quit();
|
|
|
|
return(-1); /* Never reached */
|
|
}
|