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#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libgen.h>
int main(int argc, char **argv)
{
const char * cmds[] = {
"su",
"ping",
"ping6",
"traceroute",
"passwd",
"login",
"vlock",
"wall"
};
const char * baseexec = basename(argv[0]);
if (!strcmp("busybox-suidwrapper", baseexec))
{
if (argc > 1 && !strcmp("-l", argv[1])){
for (int i = 0; i < sizeof(cmds) / sizeof(cmds[0]); ++i)
{
printf("%s ", cmds[i]);
}
printf("\n");
} else {
printf("busybox SUID wrapper\n\nSupported commands:\n");
printf("Usage:\n -l\tList available SUID commands\n");
if (argc > 1) return 1;
}
return 0;
}
for (int i = 0; i < sizeof(cmds) / sizeof(cmds[0]); ++i)
{
if (!strcmp(cmds[i], baseexec))
{
char **newargv = malloc(sizeof(char *) * (argc + 2));
newargv[0] = "/bin/busybox";
newargv[1] = (char *)baseexec;
for (int i = 1; i < argc; i++)
newargv[i + 1] = argv[i];
newargv[argc + 1] = NULL;
int ret = execv("/bin/busybox", newargv);
free(newargv);
perror(argv[0]);
return ret;
}
}
fprintf(stderr, "%s","error: command not in suid whitelist!\n");
return 1;
}
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