267 lines
6.3 KiB
C++
267 lines
6.3 KiB
C++
// SPDX-License-Identifier: AGPL-1.0-only
|
|
// Copyright (C) 2018 Ludvig Strigeus <info@tunsafe.com>. All Rights Reserved.
|
|
#include "stdafx.h"
|
|
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <string>
|
|
|
|
#if defined(OS_POSIX)
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
|
|
#include "tunsafe_types.h"
|
|
|
|
static char base64_alphabet[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
|
|
|
uint8 *base64_encode(const uint8 *input, size_t length, size_t *out_length) {
|
|
uint32 a;
|
|
size_t size;
|
|
uint8 *result, *r;
|
|
const uint8 *end;
|
|
|
|
size = length * 4 / 3 + 4 + 1;
|
|
r = result = (byte*)malloc(size);
|
|
|
|
end = input + length - 3;
|
|
|
|
// Encode full blocks
|
|
while (input <= end) {
|
|
a = (input[0] << 16) + (input[1] << 8) + input[2];
|
|
input += 3;
|
|
|
|
r[0] = base64_alphabet[(a >> 18)/* & 0x3F*/];
|
|
r[1] = base64_alphabet[(a >> 12) & 0x3F];
|
|
r[2] = base64_alphabet[(a >> 6) & 0x3F];
|
|
r[3] = base64_alphabet[(a) & 0x3F];
|
|
r += 4;
|
|
}
|
|
|
|
if (input == end + 2) {
|
|
a = input[0] << 4;
|
|
r[0] = base64_alphabet[(a >> 6) /*& 0x3F*/];
|
|
r[1] = base64_alphabet[(a) & 0x3F];
|
|
r[2] = '=';
|
|
r[3] = '=';
|
|
r += 4;
|
|
} else if (input == end + 1) {
|
|
a = (input[0] << 10) + (input[1] << 2);
|
|
r[0] = base64_alphabet[(a >> 12) /*& 0x3F*/];
|
|
r[1] = base64_alphabet[(a >> 6) & 0x3F];
|
|
r[2] = base64_alphabet[(a) & 0x3F];
|
|
r[3] = '=';
|
|
r += 4;
|
|
}
|
|
if (out_length)
|
|
*out_length = r - result;
|
|
*r = 0;
|
|
return result;
|
|
}
|
|
|
|
#define WHITESPACE 64
|
|
#define EQUALS 65
|
|
#define INVALID 66
|
|
|
|
static const unsigned char d[] = {
|
|
66,66,66,66,66,66,66,66,66,66,64,66,66,66,66,66,66,66,66,66,66,66,66,66,66,
|
|
66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,62,66,66,66,63,52,53,
|
|
54,55,56,57,58,59,60,61,66,66,66,65,66,66,66, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
|
|
10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,66,66,66,66,66,66,26,27,28,
|
|
29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,66,66,
|
|
66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,
|
|
66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,
|
|
66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,
|
|
66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,
|
|
66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,66,
|
|
66,66,66,66,66,66
|
|
};
|
|
|
|
bool base64_decode(uint8 *in, size_t inLen, uint8 *out, size_t *outLen) {
|
|
uint8 *end = in + inLen;
|
|
uint8 iter = 0;
|
|
uint32_t buf = 0;
|
|
size_t len = 0;
|
|
|
|
while (in < end) {
|
|
unsigned char c = d[*in++];
|
|
|
|
switch (c) {
|
|
case WHITESPACE: continue; /* skip whitespace */
|
|
case INVALID: return false; /* invalid input, return error */
|
|
case EQUALS: /* pad character, end of data */
|
|
in = end;
|
|
continue;
|
|
default:
|
|
buf = buf << 6 | c;
|
|
iter++;
|
|
if (iter == 4) {
|
|
if ((len += 3) > *outLen) return 0; /* buffer overflow */
|
|
*(out++) = (buf >> 16) & 255;
|
|
*(out++) = (buf >> 8) & 255;
|
|
*(out++) = buf & 255;
|
|
buf = 0; iter = 0;
|
|
|
|
}
|
|
}
|
|
}
|
|
if (iter == 3) {
|
|
if ((len += 2) > *outLen) return 0; /* buffer overflow */
|
|
*(out++) = (buf >> 10) & 255;
|
|
*(out++) = (buf >> 2) & 255;
|
|
} else if (iter == 2) {
|
|
if (++len > *outLen) return 0; /* buffer overflow */
|
|
*(out++) = (buf >> 4) & 255;
|
|
}
|
|
*outLen = len;
|
|
return true;
|
|
}
|
|
|
|
|
|
|
|
int RunCommand(const char *fmt, ...) {
|
|
const char *fmt_org = fmt;
|
|
va_list va;
|
|
std::string tmp;
|
|
char buf[32], c;
|
|
char *args[33];
|
|
char *envp[1] = {NULL};
|
|
int nargs = 0;
|
|
va_start(va, fmt);
|
|
for (;;) {
|
|
c = *fmt++;
|
|
if (c == '%') {
|
|
c = *fmt++;
|
|
if (c == 0) goto ZERO;
|
|
if (c == 's') {
|
|
tmp += va_arg(va, char*);
|
|
} else if (c == 'd') {
|
|
snprintf(buf, 32, "%d", va_arg(va, int));
|
|
tmp += buf;
|
|
} else if (c == 'u') {
|
|
snprintf(buf, 32, "%u", va_arg(va, int));
|
|
tmp += buf;
|
|
} else if (c == '%') {
|
|
tmp += '%';
|
|
} else if (c == 'A') {
|
|
struct in_addr in;
|
|
in.s_addr = htonl(va_arg(va, in_addr_t));
|
|
tmp += inet_ntoa(in);
|
|
}
|
|
} else if (c == ' ' || c == 0) {
|
|
ZERO:
|
|
args[nargs++] = _strdup(tmp.c_str());
|
|
tmp.clear();
|
|
if (nargs == 32 || c == 0) break;
|
|
} else {
|
|
tmp += c;
|
|
}
|
|
}
|
|
args[nargs] = 0;
|
|
|
|
fprintf(stderr, "Run:");
|
|
for (int i = 0; args[i]; i++)
|
|
fprintf(stderr, " %s", args[i]);
|
|
fprintf(stderr, "\n");
|
|
|
|
int ret = -1;
|
|
|
|
|
|
#if defined(OS_POSIX)
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
execve(args[0], args, envp);
|
|
exit(127);
|
|
}
|
|
if (pid < 0) {
|
|
RERROR("Fork failed");
|
|
} else if (waitpid(pid, &ret, 0) != pid) {
|
|
ret = -1;
|
|
}
|
|
#endif
|
|
|
|
if (ret != 0)
|
|
RERROR("Command %s failed %d!", fmt_org, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool IsOnlyZeros(const uint8 *data, size_t data_size) {
|
|
for (size_t i = 0; i != data_size; i++)
|
|
if (data[i])
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
|
|
#ifdef _MSC_VER
|
|
void printhex(const char *name, const void *a, size_t l) {
|
|
char buf[256];
|
|
snprintf(buf, 256, "%s (%d):", name, (int)l); OutputDebugString(buf);
|
|
for (size_t i = 0; i < l; i++) {
|
|
if (i % 4 == 0) printf(" ");
|
|
snprintf(buf, 256, "%.2X", *((uint8*)a + i)); OutputDebugString(buf);
|
|
}
|
|
OutputDebugString("\n");
|
|
}
|
|
|
|
#else
|
|
void printhex(const char *name, const void *a, size_t l) {
|
|
printf("%s (%d):", name, (int)l);
|
|
for (size_t i = 0; i < l; i++) {
|
|
if (i % 4 == 0) printf(" ");
|
|
printf("%.2X", *((uint8*)a + i));
|
|
}
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
typedef void Logger(const char *msg);
|
|
Logger *g_logger;
|
|
|
|
#undef RERROR
|
|
#undef void
|
|
|
|
void RERROR(const char *msg, ...);
|
|
|
|
void RERROR(const char *msg, ...) {
|
|
va_list va;
|
|
char buf[512];
|
|
va_start(va, msg);
|
|
vsnprintf(buf, sizeof(buf), msg, va);
|
|
va_end(va);
|
|
if (g_logger) {
|
|
g_logger(buf);
|
|
} else {
|
|
fputs(buf, stderr);
|
|
fputs("\n", stderr);
|
|
}
|
|
}
|
|
|
|
void rinfo(const char *msg, ...) {
|
|
printf("muu");
|
|
}
|
|
|
|
void rinfo2(const char *msg) {
|
|
printf("muu2");
|
|
}
|
|
|
|
void RINFO(const char *msg, ...) {
|
|
va_list va;
|
|
char buf[512];
|
|
va_start(va, msg);
|
|
vsnprintf(buf, sizeof(buf), msg, va);
|
|
va_end(va);
|
|
if (g_logger) {
|
|
g_logger(buf);
|
|
} else {
|
|
fputs(buf, stderr);
|
|
fputs("\n", stderr);
|
|
}
|
|
}
|