3
* Copyright 2004--2005, Google Inc.
5
* Redistribution and use in source and binary forms, with or without
6
* modification, are permitted provided that the following conditions are met:
8
* 1. Redistributions of source code must retain the above copyright notice,
9
* this list of conditions and the following disclaimer.
10
* 2. Redistributions in binary form must reproduce the above copyright notice,
11
* this list of conditions and the following disclaimer in the documentation
12
* and/or other materials provided with the distribution.
13
* 3. The name of the author may not be used to endorse or promote products
14
* derived from this software without specific prior written permission.
16
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
#include "talk/base/win32.h"
34
#include "talk/base/basictypes.h"
35
#include "talk/base/byteorder.h"
36
#include "talk/base/common.h"
37
#include "talk/base/logging.h"
41
// Helper function declarations for inet_ntop/inet_pton.
42
static const char* inet_ntop_v4(const void* src, char* dst, socklen_t size);
43
static const char* inet_ntop_v6(const void* src, char* dst, socklen_t size);
44
static int inet_pton_v4(const char* src, void* dst);
45
static int inet_pton_v6(const char* src, void* dst);
47
// Implementation of inet_ntop (create a printable representation of an
48
// ip address). XP doesn't have its own inet_ntop, and
49
// WSAAddressToString requires both IPv6 to be installed and for Winsock
51
const char* win32_inet_ntop(int af, const void *src,
52
char* dst, socklen_t size) {
58
return inet_ntop_v4(src, dst, size);
61
return inet_ntop_v6(src, dst, size);
67
// As above, but for inet_pton. Implements inet_pton for v4 and v6.
68
// Note that our inet_ntop will output normal 'dotted' v4 addresses only.
69
int win32_inet_pton(int af, const char* src, void* dst) {
74
return inet_pton_v4(src, dst);
75
} else if (af == AF_INET6) {
76
return inet_pton_v6(src, dst);
81
// Helper function for inet_ntop for IPv4 addresses.
82
// Outputs "dotted-quad" decimal notation.
83
const char* inet_ntop_v4(const void* src, char* dst, socklen_t size) {
84
if (size < INET_ADDRSTRLEN) {
87
const struct in_addr* as_in_addr =
88
reinterpret_cast<const struct in_addr*>(src);
89
talk_base::sprintfn(dst, size, "%d.%d.%d.%d",
90
as_in_addr->S_un.S_un_b.s_b1,
91
as_in_addr->S_un.S_un_b.s_b2,
92
as_in_addr->S_un.S_un_b.s_b3,
93
as_in_addr->S_un.S_un_b.s_b4);
97
// Helper function for inet_ntop for IPv6 addresses.
98
const char* inet_ntop_v6(const void* src, char* dst, socklen_t size) {
99
if (size < INET6_ADDRSTRLEN) {
102
const uint16* as_shorts =
103
reinterpret_cast<const uint16*>(src);
108
int run_array_size = ARRAY_SIZE(runpos);
109
// Run over the address marking runs of 0s.
110
for (int i = 0; i < run_array_size; ++i) {
111
if (as_shorts[i] == 0) {
126
// Run back through, setting -1 for all but the longest run.
127
for (int i = run_array_size - 1; i >= 0; i--) {
130
} else if (runpos[i] == -1) {
131
// We're less than maxpos, we hit a -1, so the 'good' run is done.
132
// Setting tmpmax -1 means all remaining positions get set to -1.
139
// Print IPv4 compatible and IPv4 mapped addresses using the IPv4 helper.
140
// These addresses have an initial run of either eight zero-bytes followed
141
// by 0xFFFF, or an initial run of ten zero-bytes.
142
if (runpos[0] == 1 && (maxpos == 5 ||
143
(maxpos == 4 && as_shorts[5] == 0xFFFF))) {
147
cursor += talk_base::sprintfn(cursor, INET6_ADDRSTRLEN - 2, "ffff:");
149
const struct in_addr* as_v4 =
150
reinterpret_cast<const struct in_addr*>(&(as_shorts[6]));
151
inet_ntop_v4(as_v4, cursor,
152
static_cast<socklen_t>(INET6_ADDRSTRLEN - (cursor - dst)));
154
for (int i = 0; i < run_array_size; ++i) {
155
if (runpos[i] == -1) {
156
cursor += talk_base::sprintfn(cursor,
157
INET6_ADDRSTRLEN - (cursor - dst),
158
"%x", NetworkToHost16(as_shorts[i]));
159
if (i != 7 && runpos[i + 1] != 1) {
162
} else if (runpos[i] == 1) {
163
// Entered the run; print the colons and skip the run.
173
// Helper function for inet_pton for IPv4 addresses.
174
// |src| points to a character string containing an IPv4 network address in
175
// dotted-decimal format, "ddd.ddd.ddd.ddd", where ddd is a decimal number
176
// of up to three digits in the range 0 to 255.
177
// The address is converted and copied to dst,
178
// which must be sizeof(struct in_addr) (4) bytes (32 bits) long.
179
int inet_pton_v4(const char* src, void* dst) {
180
const int kIpv4AddressSize = 4;
182
const char* src_pos = src;
183
unsigned char result[kIpv4AddressSize] = {0};
185
while (*src_pos != '\0') {
186
// strtol won't treat whitespace characters in the begining as an error,
187
// so check to ensure this is started with digit before passing to strtol.
188
if (!isdigit(*src_pos)) {
192
long value = strtol(src_pos, &end_pos, 10);
193
if (value < 0 || value > 255 || src_pos == end_pos) {
197
if (found > kIpv4AddressSize) {
200
result[found - 1] = static_cast<unsigned char>(value);
202
if (*src_pos == '.') {
205
} else if (*src_pos != '\0') {
206
// If it's neither '.' nor '\0' then return fail.
210
if (found != kIpv4AddressSize) {
213
memcpy(dst, result, sizeof(result));
217
// Helper function for inet_pton for IPv6 addresses.
218
int inet_pton_v6(const char* src, void* dst) {
219
// sscanf will pick any other invalid chars up, but it parses 0xnnnn as hex.
220
// Check for literal x in the input string.
221
const char* readcursor = src;
222
char c = *readcursor++;
231
struct in6_addr an_addr;
232
memset(&an_addr, 0, sizeof(an_addr));
234
uint16* addr_cursor = reinterpret_cast<uint16*>(&an_addr.s6_addr[0]);
235
uint16* addr_end = reinterpret_cast<uint16*>(&an_addr.s6_addr[16]);
236
bool seencompressed = false;
238
// Addresses that start with "::" (i.e., a run of initial zeros) or
239
// "::ffff:" can potentially be IPv4 mapped or compatibility addresses.
240
// These have dotted-style IPv4 addresses on the end (e.g. "::192.168.7.1").
241
if (*readcursor == ':' && *(readcursor+1) == ':' &&
242
*(readcursor + 2) != 0) {
243
// Check for periods, which we'll take as a sign of v4 addresses.
244
const char* addrstart = readcursor + 2;
245
if (talk_base::strchr(addrstart, ".")) {
246
const char* colon = talk_base::strchr(addrstart, "::");
250
if (sscanf(addrstart, "%hx%n", &a_short, &bytesread) != 1 ||
251
a_short != 0xFFFF || bytesread != 4) {
252
// Colons + periods means has to be ::ffff:a.b.c.d. But it wasn't.
255
an_addr.s6_addr[10] = 0xFF;
256
an_addr.s6_addr[11] = 0xFF;
257
addrstart = colon + 1;
261
if (inet_pton_v4(addrstart, &v4.s_addr)) {
262
memcpy(&an_addr.s6_addr[12], &v4, sizeof(v4));
263
memcpy(dst, &an_addr, sizeof(an_addr));
266
// Invalid v4 address.
272
// For addresses without a trailing IPv4 component ('normal' IPv6 addresses).
273
while (*readcursor != 0 && addr_cursor < addr_end) {
274
if (*readcursor == ':') {
275
if (*(readcursor + 1) == ':') {
276
if (seencompressed) {
277
// Can only have one compressed run of zeroes ("::") per address.
280
// Hit a compressed run. Count colons to figure out how much of the
281
// address is skipped.
283
const char* coloncounter = readcursor;
285
if (*coloncounter == 0) {
286
// Special case - trailing ::.
287
addr_cursor = addr_end;
289
while (*coloncounter) {
290
if (*coloncounter == ':') {
295
// (coloncount + 1) is the number of shorts left in the address.
296
addr_cursor = addr_end - (coloncount + 1);
297
seencompressed = true;
305
if (sscanf(readcursor, "%hx%n", &word, &bytesread) != 1) {
308
*addr_cursor = HostToNetwork16(word);
310
readcursor += bytesread;
311
if (*readcursor != ':' && *readcursor != '\0') {
318
if (*readcursor != '\0' || addr_cursor < addr_end) {
319
// Catches addresses too short or too long.
322
memcpy(dst, &an_addr, sizeof(an_addr));
327
// Unix time is in seconds relative to 1/1/1970. So we compute the windows
328
// FILETIME of that time/date, then we add/subtract in appropriate units to
329
// convert to/from unix time.
330
// The units of FILETIME are 100ns intervals, so by multiplying by or dividing
331
// by 10000000, we can convert to/from seconds.
333
// FileTime = UnixTime*10000000 + FileTime(1970)
334
// UnixTime = (FileTime-FileTime(1970))/10000000
337
void FileTimeToUnixTime(const FILETIME& ft, time_t* ut) {
340
// FILETIME has an earlier date base than time_t (1/1/1970), so subtract off
343
memset(&base_st, 0, sizeof(base_st));
346
base_st.wYear = 1970;
349
SystemTimeToFileTime(&base_st, &base_ft);
351
ULARGE_INTEGER base_ul, current_ul;
352
memcpy(&base_ul, &base_ft, sizeof(FILETIME));
353
memcpy(¤t_ul, &ft, sizeof(FILETIME));
355
// Divide by big number to convert to seconds, then subtract out the 1970
357
const ULONGLONG RATIO = 10000000;
358
*ut = static_cast<time_t>((current_ul.QuadPart - base_ul.QuadPart) / RATIO);
361
void UnixTimeToFileTime(const time_t& ut, FILETIME* ft) {
364
// FILETIME has an earlier date base than time_t (1/1/1970), so add in
367
memset(&base_st, 0, sizeof(base_st));
370
base_st.wYear = 1970;
373
SystemTimeToFileTime(&base_st, &base_ft);
375
ULARGE_INTEGER base_ul;
376
memcpy(&base_ul, &base_ft, sizeof(FILETIME));
378
// Multiply by big number to convert to 100ns units, then add in the 1970
380
const ULONGLONG RATIO = 10000000;
381
ULARGE_INTEGER current_ul;
382
current_ul.QuadPart = base_ul.QuadPart + static_cast<int64>(ut) * RATIO;
383
memcpy(ft, ¤t_ul, sizeof(FILETIME));
386
bool Utf8ToWindowsFilename(const std::string& utf8, std::wstring* filename) {
387
// TODO: Integrate into fileutils.h
388
// TODO: Handle wide and non-wide cases via TCHAR?
389
// TODO: Skip \\?\ processing if the length is not > MAX_PATH?
390
// TODO: Write unittests
393
int wlen = ::MultiByteToWideChar(CP_UTF8, 0, utf8.c_str(),
394
static_cast<int>(utf8.length() + 1), NULL,
399
wchar_t* wfilename = STACK_ARRAY(wchar_t, wlen);
400
if (0 == ::MultiByteToWideChar(CP_UTF8, 0, utf8.c_str(),
401
static_cast<int>(utf8.length() + 1),
405
// Replace forward slashes with backslashes
406
std::replace(wfilename, wfilename + wlen, L'/', L'\\');
407
// Convert to complete filename
408
DWORD full_len = ::GetFullPathName(wfilename, 0, NULL, NULL);
412
wchar_t* filepart = NULL;
413
wchar_t* full_filename = STACK_ARRAY(wchar_t, full_len + 6);
414
wchar_t* start = full_filename + 6;
415
if (0 == ::GetFullPathName(wfilename, full_len, start, &filepart)) {
418
// Add long-path prefix
419
const wchar_t kLongPathPrefix[] = L"\\\\?\\UNC";
420
if ((start[0] != L'\\') || (start[1] != L'\\')) {
421
// Non-unc path: <pathname>
422
// Becomes: \\?\<pathname>
424
ASSERT(start >= full_filename);
425
memcpy(start, kLongPathPrefix, 4 * sizeof(wchar_t));
426
} else if (start[2] != L'?') {
427
// Unc path: \\<server>\<pathname>
428
// Becomes: \\?\UNC\<server>\<pathname>
430
ASSERT(start >= full_filename);
431
memcpy(start, kLongPathPrefix, 7 * sizeof(wchar_t));
433
// Already in long-path form.
435
filename->assign(start);
439
bool GetOsVersion(int* major, int* minor, int* build) {
440
OSVERSIONINFO info = {0};
441
info.dwOSVersionInfoSize = sizeof(info);
442
if (GetVersionEx(&info)) {
443
if (major) *major = info.dwMajorVersion;
444
if (minor) *minor = info.dwMinorVersion;
445
if (build) *build = info.dwBuildNumber;
451
bool GetCurrentProcessIntegrityLevel(int* level) {
453
HANDLE process = ::GetCurrentProcess(), token;
454
if (OpenProcessToken(process, TOKEN_QUERY | TOKEN_QUERY_SOURCE, &token)) {
456
if (!GetTokenInformation(token, TokenIntegrityLevel, NULL, 0, &size) &&
457
GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
459
char* buf = STACK_ARRAY(char, size);
460
TOKEN_MANDATORY_LABEL* til =
461
reinterpret_cast<TOKEN_MANDATORY_LABEL*>(buf);
462
if (GetTokenInformation(token, TokenIntegrityLevel, til, size, &size)) {
464
DWORD count = *GetSidSubAuthorityCount(til->Label.Sid);
465
*level = *GetSidSubAuthority(til->Label.Sid, count - 1);
473
} // namespace talk_base
added
removed
protocols/jabber/googletalk/libjingle/talk/base/win32.cc
