diff --git a/jni/hidesu.c b/jni/hidesu.c index 4a8cc03d5..99ea8d933 100644 --- a/jni/hidesu.c +++ b/jni/hidesu.c @@ -1,14 +1,28 @@ +typedef unsigned short int sa_family_t; +//Linux includes +#define _LINUX_TIME_H #define _GNU_SOURCE -#include +#include +#include +#include #include -#include +#include +#include +#include +#include +#include #include -#include -#include +#include +#include +#include +#include -int main(int argc, char **argv) { - if(argc != 2) exit(5); - int fd = open(argv[1], O_RDONLY); +//WARNING: Calling this will change our current namespace +//We don't care because we don't want to run from here anyway +int disableSu(int pid) { + char *path = NULL; + asprintf(&path, "/proc/%d/ns/mnt", pid); + int fd = open(path, O_RDONLY); if(fd == -1) exit(2); //TODO: Fix non arm platforms #define SYS_setns 375 @@ -18,5 +32,45 @@ int main(int argc, char **argv) { //XXX: What to mount to /sbin...? res = mount("/system", "/sbin", "bind", MS_BIND, ""); if(res == -1) exit(4); - exit(0); + return 0; +} + +int main(int argc, char **argv, char **envp) { + system("logcat -b events -c"); + FILE *p = popen("logcat -b events -v raw -s am_proc_start", "r"); + while(!feof(p)) { + //Format of am_proc_start is (as of Android 5.1 and 6.0) + //UserID, pid, unix uid, processName, hostingType, hostingName + char buffer[512]; + int size = fgets(buffer, sizeof(buffer), p); + + { + char *pos = buffer; + while(1) { + pos = index(pos, ','); + if(pos == NULL) + break; + pos[0] = ' '; + } + } + + int user, pid, uid; + char processName[256], hostingType[16], hostingName[256]; + int ret = sscanf(buffer, "[%d %d %d %256s %16s %256s]", + &user, &pid, &uid, + processName, hostingType, hostingName); + + + if(ret != 6) { + printf("sscanf returned %d on '%s'\n", ret, buffer); + exit(1); + } +#define GMS_PROC "com.google.android.gms.unstable" + if(strcmp(processName, GMS_PROC) == 0) { + printf("Disabling for PID = %d, UID = %d\n", pid, uid); + disableSu(pid); + } + } + + return 0; }