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Obfuscate socket name to prevent detection

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Because why not
This commit is contained in:
topjohnwu
2018-02-11 03:40:09 +08:00
parent 7193374a7e
commit ebd509d92d
5 changed files with 134 additions and 88 deletions
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19
native/jni/utils/misc.c
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@ -17,6 +17,7 @@
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/inotify.h>
#include <sys/sysmacros.h>
#include "logging.h"
#include "utils.h"
@ -341,3 +342,21 @@ void wait_till_exists(const char *target) {
}
close(fd);
}
void gen_rand_str(char *buf, int len) {
const char base[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.";
int urandom;
if (access("/dev/urandom", R_OK) == 0) {
urandom = xopen("/dev/urandom", O_RDONLY | O_CLOEXEC);
} else {
mknod("/urandom", S_IFCHR | 0666, makedev(1, 9));
urandom = xopen("/urandom", O_RDONLY | O_CLOEXEC);
unlink("/urandom");
}
xxread(urandom, buf, len - 1);
close(urandom);
for (int i = 0; i < len - 1; ++i) {
buf[i] = base[buf[i] % (sizeof(base) - 1)];
}
buf[len - 1] = '\0';
}