selinux/libselinux/utils/validatetrans.c
Christian Göttsche 1020a5a248 libselinux/utils: check for valid contexts to improve error causes
Return more detailed error messages when the supplied contexts are
invalid.

Acked-by: James Carter <jwcart2@gmail.com>
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
2022-04-12 13:09:27 -04:00

46 lines
1.0 KiB
C

#include <unistd.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <selinux/selinux.h>
int main(int argc, char **argv)
{
security_class_t tclass;
int ret;
if (argc != 5) {
fprintf(stderr, "usage: %s scontext tcontext tclass newcontext\n",
argv[0]);
exit(1);
}
if (security_check_context(argv[1])) {
fprintf(stderr, "%s: invalid source context '%s'\n", argv[0], argv[1]);
exit(4);
}
if (security_check_context(argv[2])) {
fprintf(stderr, "%s: invalid target context '%s'\n", argv[0], argv[2]);
exit(5);
}
tclass = string_to_security_class(argv[3]);
if (!tclass) {
fprintf(stderr, "%s: invalid class '%s'\n", argv[0], argv[3]);
exit(2);
}
if (security_check_context(argv[4])) {
fprintf(stderr, "%s: invalid new context '%s'\n", argv[0], argv[4]);
exit(6);
}
ret = security_validatetrans(argv[1], argv[2], tclass, argv[4]);
printf("security_validatetrans returned %d errno: %s\n", ret, strerror(errno));
return ret;
}