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| #define _GNU_SOURCE
#include <dlfcn.h>
#include <fcntl.h>
#include <libudev.h>
#include <netinet/in.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/uio.h>
#include <unistd.h>
#define RSA void
#define DISK_LABEL "UNRAID"
#define BTRS_FORMAT \
"regGUID=%s®Ty=%s®To=\"%s\"®Tm=%s®Gen=0®Days=0"
typedef int (*RSA_PUBLIC_DECRYPT_FUNC)(int flen, unsigned char* from,
unsigned char* to, RSA* rsa,
int padding);
static char* unraid_uuid = NULL;
static char* unraid_name = NULL;
static char* unraid_date = NULL;
static char* unraid_version = NULL;
RSA_PUBLIC_DECRYPT_FUNC rsa_public_decrypt;
int get_dev_path(char* buffer, size_t size);
int get_usb_device(char* buffer, size_t size);
int get_serial_string(char* buffer, size_t size);
void read_file(char* buff_ptr, char* base_ptr, char* file_ptr, char* file);
__attribute__((constructor)) void unraid_init() {
if (!rsa_public_decrypt) {
rsa_public_decrypt =
(RSA_PUBLIC_DECRYPT_FUNC)dlsym(RTLD_NEXT, "RSA_public_decrypt");
}
if (!unraid_uuid) {
unraid_uuid = (char*)malloc(1024);
strcpy(unraid_uuid, "1234-1234-1234-1234567890AB");
int err = get_serial_string(unraid_uuid, 1024);
if (err && getenv("UNRAID_UUID")) {
strcpy(unraid_uuid, getenv("UNRAID_UUID"));
}
unraid_name = getenv("UNRAID_NAME");
unraid_date = getenv("UNRAID_DATE");
unraid_version = getenv("UNRAID_VERSION");
}
}
const char* get_self_exe_name(int full) {
static char buffer[4096] = "";
readlink("/proc/self/exe", buffer, 4096);
if (full) {
return buffer;
}
char* ptr = &buffer[strlen(buffer)];
while (*ptr != '/') --ptr;
return (ptr + 1);
}
int RSA_public_decrypt(int flen, unsigned char* from, unsigned char* to,
RSA* rsa, int padding) {
if (!strcmp(get_self_exe_name(0), "emhttpd") ||
!strcmp(get_self_exe_name(0), "shfs")) {
sprintf(to, BTRS_FORMAT, unraid_uuid, unraid_version, unraid_name,
unraid_date);
int len = strlen(to);
return len;
} else {
return rsa_public_decrypt(flen, from, to, rsa, padding);
}
}
int get_dev_path(char* buffer, size_t size) {
char link_device[1024];
char real_device[1024];
sprintf(link_device, "/dev/disk/by-label/%s", DISK_LABEL);
char* rv = realpath(link_device, real_device);
if (!rv) return 2;
struct udev* udev;
struct udev_device* dev;
struct udev_enumerate* enumerate;
struct udev_list_entry *devices, *dev_list_entry;
int find = -1;
udev = udev_new();
if (!udev) {
return 1;
}
enumerate = udev_enumerate_new(udev);
if (!enumerate) {
return 1;
}
udev_enumerate_add_match_subsystem(enumerate, "block");
udev_enumerate_scan_devices(enumerate);
devices = udev_enumerate_get_list_entry(enumerate);
if (!devices) {
return 1;
}
udev_list_entry_foreach(dev_list_entry, devices) {
const char *path, *tmp;
unsigned long long disk_size = 0;
path = udev_list_entry_get_name(dev_list_entry);
dev = udev_device_new_from_syspath(udev, path);
if (strncmp(udev_device_get_devtype(dev), "partition", 9) != 0 &&
strncmp(udev_device_get_sysname(dev), "loop", 4) != 0) {
const char* devnode = udev_device_get_devnode(dev);
char* ptr = strstr(real_device, devnode);
if (ptr && ptr == real_device) {
find = 0;
strcpy(buffer, udev_device_get_devpath(dev));
}
}
udev_device_unref(dev);
}
udev_enumerate_unref(enumerate);
udev_unref(udev);
return find;
}
int get_usb_device(char* buffer, size_t size) {
char dev_path[1024];
if (get_dev_path(dev_path, 1024)) {
return 2;
}
int slash_index[1024];
int slash_count = 0;
for (int i = 0; i < strlen(dev_path); ++i) {
if (dev_path[i] == '/') {
slash_index[slash_count++] = i;
}
}
int find = -1;
for (int i = slash_count - 1; i >= 0; --i) {
char usb_device[1024] = "/sys";
strcpy(&dev_path[slash_index[i]], "/serial");
strcat(usb_device, dev_path);
if (!access(usb_device, F_OK | R_OK)) {
strcpy(buffer, usb_device);
buffer[strlen(buffer) - strlen("/serial")] = '\0';
find = 0;
break;
}
}
return find;
}
void read_file(char* buff_ptr, char* base_ptr, char* file_ptr, char* file) {
strcpy(file_ptr, file);
FILE* fp = fopen(base_ptr, "r");
fscanf(fp, "%s", buff_ptr);
fclose(fp);
}
int get_serial_string(char* buffer, size_t size) {
char usb_device[1024];
if (get_usb_device(usb_device, 1024)) {
return 2;
}
char* file_ptr = &usb_device[strlen(usb_device)];
char* buff_ptr = buffer;
read_file(buff_ptr, usb_device, file_ptr, "/idVendor");
strcat(buff_ptr, "-");
buff_ptr += strlen(buff_ptr);
read_file(buff_ptr, usb_device, file_ptr, "/idProduct");
strcat(buff_ptr, "-");
buff_ptr += strlen(buff_ptr);
char serial_buffer[1024]
read_file(serial_buffer, usb_device, file_ptr, "/serial");
strcpy(buff_ptr, serial_buffer);
*(buff_ptr + 4) = '-';
strcpy(buff_ptr + 5, &serial_buffer[4]);
int offset = 'A' - 'a';
for (int i = 0; i < strlen(buffer); ++i) {
if (buffer[i] >= 'a' && buffer[i] <= 'z') {
buffer[i] += offset;
}
}
return 0;
}
int main() {
char serial[1024];
int err = get_serial_string(serial, 1024);
if (!err) {
printf("SERIAL: %s\n", serial);
}
return 0;
}
|
