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#include <cstdio>
#include <cstdlib>
#include <errno.h>
#include <sysexits.h>
#include <unistd.h>
#include <launch.h>
#include <Menes/Function.h>
typedef Function<void, const char *, launch_data_t> LaunchDataIterator;
void launch_data_dict_iterate(launch_data_t data, LaunchDataIterator code) {
launch_data_dict_iterate(data, [](launch_data_t value, const char *name, void *baton) {
(*static_cast<LaunchDataIterator *>(baton))(name, value);
}, &code);
}
int main(int argc, char *argv[]) {
auto request(launch_data_new_string(LAUNCH_KEY_GETJOBS));
auto response(launch_msg(request));
launch_data_free(request);
_assert(response != NULL);
_assert(launch_data_get_type(response) == LAUNCH_DATA_DICTIONARY);
int parent(getppid());
bool cydia(false);
launch_data_dict_iterate(response, [=, &cydia](const char *name, launch_data_t value) {
if (launch_data_get_type(response) != LAUNCH_DATA_DICTIONARY)
return;
auto integer(launch_data_dict_lookup(value, LAUNCH_JOBKEY_PID));
if (integer == NULL || launch_data_get_type(integer) != LAUNCH_DATA_INTEGER)
return;
auto pid(launch_data_get_integer(integer));
if (pid != parent)
return;
auto string(launch_data_dict_lookup(value, LAUNCH_JOBKEY_PROGRAM));
if (string == NULL || launch_data_get_type(string) != LAUNCH_DATA_STRING)
return;
auto program(launch_data_get_string(string));
if (program == NULL)
return;
if (strcmp(program, "/Applications/Cydia.app/Cydia") == 0)
cydia = true;
});
if (!cydia) {
fprintf(stderr, "thou shalt not pass\n");
return EX_NOPERM;
}
setuid(0);
setgid(0);
if (argc < 2 || argv[1][0] != '/')
argv[0] = "/usr/bin/dpkg";
else {
--argc;
++argv;
}
execv(argv[0], argv);
return EX_UNAVAILABLE;
}
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