Move webrtc/{base => rtc_base}

webrtc/base/win32.cc

Index: webrtc/base/win32.cc
diff --git a/webrtc/base/win32.cc b/webrtc/base/win32.cc
deleted file mode 100644
index 89970ec3a98004e956f5f4528d5e7729ba930b57..0000000000000000000000000000000000000000
--- a/webrtc/base/win32.cc
+++ /dev/null
@@ -1,461 +0,0 @@
-/*
- *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "webrtc/base/win32.h"
-
-#include <winsock2.h>
-#include <ws2tcpip.h>
-#include <algorithm>
-
-#include "webrtc/base/arraysize.h"
-#include "webrtc/base/basictypes.h"
-#include "webrtc/base/byteorder.h"
-#include "webrtc/base/checks.h"
-#include "webrtc/base/logging.h"
-
-namespace rtc {
-
-// Helper function declarations for inet_ntop/inet_pton.
-static const char* inet_ntop_v4(const void* src, char* dst, socklen_t size);
-static const char* inet_ntop_v6(const void* src, char* dst, socklen_t size);
-static int inet_pton_v4(const char* src, void* dst);
-static int inet_pton_v6(const char* src, void* dst);
-
-// Implementation of inet_ntop (create a printable representation of an
-// ip address). XP doesn't have its own inet_ntop, and
-// WSAAddressToString requires both IPv6 to be  installed and for Winsock
-// to be initialized.
-const char* win32_inet_ntop(int af, const void *src,
-                            char* dst, socklen_t size) {
-  if (!src || !dst) {
-    return nullptr;
-  }
-  switch (af) {
-    case AF_INET: {
-      return inet_ntop_v4(src, dst, size);
-    }
-    case AF_INET6: {
-      return inet_ntop_v6(src, dst, size);
-    }
-  }
-  return nullptr;
-}
-
-// As above, but for inet_pton. Implements inet_pton for v4 and v6.
-// Note that our inet_ntop will output normal 'dotted' v4 addresses only.
-int win32_inet_pton(int af, const char* src, void* dst) {
-  if (!src || !dst) {
-    return 0;
-  }
-  if (af == AF_INET) {
-    return inet_pton_v4(src, dst);
-  } else if (af == AF_INET6) {
-    return inet_pton_v6(src, dst);
-  }
-  return -1;
-}
-
-// Helper function for inet_ntop for IPv4 addresses.
-// Outputs "dotted-quad" decimal notation.
-const char* inet_ntop_v4(const void* src, char* dst, socklen_t size) {
-  if (size < INET_ADDRSTRLEN) {
-    return nullptr;
-  }
-  const struct in_addr* as_in_addr =
-      reinterpret_cast<const struct in_addr*>(src);
-  rtc::sprintfn(dst, size, "%d.%d.%d.%d",
-                      as_in_addr->S_un.S_un_b.s_b1,
-                      as_in_addr->S_un.S_un_b.s_b2,
-                      as_in_addr->S_un.S_un_b.s_b3,
-                      as_in_addr->S_un.S_un_b.s_b4);
-  return dst;
-}
-
-// Helper function for inet_ntop for IPv6 addresses.
-const char* inet_ntop_v6(const void* src, char* dst, socklen_t size) {
-  if (size < INET6_ADDRSTRLEN) {
-    return nullptr;
-  }
-  const uint16_t* as_shorts = reinterpret_cast<const uint16_t*>(src);
-  int runpos[8];
-  int current = 1;
-  int max = 0;
-  int maxpos = -1;
-  int run_array_size = arraysize(runpos);
-  // Run over the address marking runs of 0s.
-  for (int i = 0; i < run_array_size; ++i) {
-    if (as_shorts[i] == 0) {
-      runpos[i] = current;
-      if (current > max) {
-        maxpos = i;
-        max = current;
-      }
-      ++current;
-    } else {
-      runpos[i] = -1;
-      current = 1;
-    }
-  }
-
-  if (max > 0) {
-    int tmpmax = maxpos;
-    // Run back through, setting -1 for all but the longest run.
-    for (int i = run_array_size - 1; i >= 0; i--) {
-      if (i > tmpmax) {
-        runpos[i] = -1;
-      } else if (runpos[i] == -1) {
-        // We're less than maxpos, we hit a -1, so the 'good' run is done.
-        // Setting tmpmax -1 means all remaining positions get set to -1.
-        tmpmax = -1;
-      }
-    }
-  }
-
-  char* cursor = dst;
-  // Print IPv4 compatible and IPv4 mapped addresses using the IPv4 helper.
-  // These addresses have an initial run of either eight zero-bytes followed
-  // by 0xFFFF, or an initial run of ten zero-bytes.
-  if (runpos[0] == 1 && (maxpos == 5 ||
-                         (maxpos == 4 && as_shorts[5] == 0xFFFF))) {
-    *cursor++ = ':';
-    *cursor++ = ':';
-    if (maxpos == 4) {
-      cursor += rtc::sprintfn(cursor, INET6_ADDRSTRLEN - 2, "ffff:");
-    }
-    const struct in_addr* as_v4 =
-        reinterpret_cast<const struct in_addr*>(&(as_shorts[6]));
-    inet_ntop_v4(as_v4, cursor,
-                 static_cast<socklen_t>(INET6_ADDRSTRLEN - (cursor - dst)));
-  } else {
-    for (int i = 0; i < run_array_size; ++i) {
-      if (runpos[i] == -1) {
-        cursor += rtc::sprintfn(cursor,
-                                      INET6_ADDRSTRLEN - (cursor - dst),
-                                      "%x", NetworkToHost16(as_shorts[i]));
-        if (i != 7 && runpos[i + 1] != 1) {
-          *cursor++ = ':';
-        }
-      } else if (runpos[i] == 1) {
-        // Entered the run; print the colons and skip the run.
-        *cursor++ = ':';
-        *cursor++ = ':';
-        i += (max - 1);
-      }
-    }
-  }
-  return dst;
-}
-
-// Helper function for inet_pton for IPv4 addresses.
-// |src| points to a character string containing an IPv4 network address in
-// dotted-decimal format, "ddd.ddd.ddd.ddd", where ddd is a decimal number
-// of up to three digits in the range 0 to 255.
-// The address is converted and copied to dst,
-// which must be sizeof(struct in_addr) (4) bytes (32 bits) long.
-int inet_pton_v4(const char* src, void* dst) {
-  const int kIpv4AddressSize = 4;
-  int found = 0;
-  const char* src_pos = src;
-  unsigned char result[kIpv4AddressSize] = {0};
-
-  while (*src_pos != '\0') {
-    // strtol won't treat whitespace characters in the begining as an error,
-    // so check to ensure this is started with digit before passing to strtol.
-    if (!isdigit(*src_pos)) {
-      return 0;
-    }
-    char* end_pos;
-    long value = strtol(src_pos, &end_pos, 10);
-    if (value < 0 || value > 255 || src_pos == end_pos) {
-      return 0;
-    }
-    ++found;
-    if (found > kIpv4AddressSize) {
-      return 0;
-    }
-    result[found - 1] = static_cast<unsigned char>(value);
-    src_pos = end_pos;
-    if (*src_pos == '.') {
-      // There's more.
-      ++src_pos;
-    } else if (*src_pos != '\0') {
-      // If it's neither '.' nor '\0' then return fail.
-      return 0;
-    }
-  }
-  if (found != kIpv4AddressSize) {
-    return 0;
-  }
-  memcpy(dst, result, sizeof(result));
-  return 1;
-}
-
-// Helper function for inet_pton for IPv6 addresses.
-int inet_pton_v6(const char* src, void* dst) {
-  // sscanf will pick any other invalid chars up, but it parses 0xnnnn as hex.
-  // Check for literal x in the input string.
-  const char* readcursor = src;
-  char c = *readcursor++;
-  while (c) {
-    if (c == 'x') {
-      return 0;
-    }
-    c = *readcursor++;
-  }
-  readcursor = src;
-
-  struct in6_addr an_addr;
-  memset(&an_addr, 0, sizeof(an_addr));
-
-  uint16_t* addr_cursor = reinterpret_cast<uint16_t*>(&an_addr.s6_addr[0]);
-  uint16_t* addr_end = reinterpret_cast<uint16_t*>(&an_addr.s6_addr[16]);
-  bool seencompressed = false;
-
-  // Addresses that start with "::" (i.e., a run of initial zeros) or
-  // "::ffff:" can potentially be IPv4 mapped or compatibility addresses.
-  // These have dotted-style IPv4 addresses on the end (e.g. "::192.168.7.1").
-  if (*readcursor == ':' && *(readcursor+1) == ':' &&
-      *(readcursor + 2) != 0) {
-    // Check for periods, which we'll take as a sign of v4 addresses.
-    const char* addrstart = readcursor + 2;
-    if (rtc::strchr(addrstart, ".")) {
-      const char* colon = rtc::strchr(addrstart, "::");
-      if (colon) {
-        uint16_t a_short;
-        int bytesread = 0;
-        if (sscanf(addrstart, "%hx%n", &a_short, &bytesread) != 1 ||
-            a_short != 0xFFFF || bytesread != 4) {
-          // Colons + periods means has to be ::ffff:a.b.c.d. But it wasn't.
-          return 0;
-        } else {
-          an_addr.s6_addr[10] = 0xFF;
-          an_addr.s6_addr[11] = 0xFF;
-          addrstart = colon + 1;
-        }
-      }
-      struct in_addr v4;
-      if (inet_pton_v4(addrstart, &v4.s_addr)) {
-        memcpy(&an_addr.s6_addr[12], &v4, sizeof(v4));
-        memcpy(dst, &an_addr, sizeof(an_addr));
-        return 1;
-      } else {
-        // Invalid v4 address.
-        return 0;
-      }
-    }
-  }
-
-  // For addresses without a trailing IPv4 component ('normal' IPv6 addresses).
-  while (*readcursor != 0 && addr_cursor < addr_end) {
-    if (*readcursor == ':') {
-      if (*(readcursor + 1) == ':') {
-        if (seencompressed) {
-          // Can only have one compressed run of zeroes ("::") per address.
-          return 0;
-        }
-        // Hit a compressed run. Count colons to figure out how much of the
-        // address is skipped.
-        readcursor += 2;
-        const char* coloncounter = readcursor;
-        int coloncount = 0;
-        if (*coloncounter == 0) {
-          // Special case - trailing ::.
-          addr_cursor = addr_end;
-        } else {
-          while (*coloncounter) {
-            if (*coloncounter == ':') {
-              ++coloncount;
-            }
-            ++coloncounter;
-          }
-          // (coloncount + 1) is the number of shorts left in the address.
-          // If this number is greater than the number of available shorts, the
-          // address is malformed.
-          if (coloncount + 1 > addr_end - addr_cursor) {
-            return 0;
-          }
-          addr_cursor = addr_end - (coloncount + 1);
-          seencompressed = true;
-        }
-      } else {
-        ++readcursor;
-      }
-    } else {
-      uint16_t word;
-      int bytesread = 0;
-      if (sscanf(readcursor, "%4hx%n", &word, &bytesread) != 1) {
-        return 0;
-      } else {
-        *addr_cursor = HostToNetwork16(word);
-        ++addr_cursor;
-        readcursor += bytesread;
-        if (*readcursor != ':' && *readcursor != '\0') {
-          return 0;
-        }
-      }
-    }
-  }
-
-  if (*readcursor != '\0' || addr_cursor < addr_end) {
-    // Catches addresses too short or too long.
-    return 0;
-  }
-  memcpy(dst, &an_addr, sizeof(an_addr));
-  return 1;
-}
-
-//
-// Unix time is in seconds relative to 1/1/1970.  So we compute the windows
-// FILETIME of that time/date, then we add/subtract in appropriate units to
-// convert to/from unix time.
-// The units of FILETIME are 100ns intervals, so by multiplying by or dividing
-// by 10000000, we can convert to/from seconds.
-//
-// FileTime = UnixTime*10000000 + FileTime(1970)
-// UnixTime = (FileTime-FileTime(1970))/10000000
-//
-
-void FileTimeToUnixTime(const FILETIME& ft, time_t* ut) {
-  RTC_DCHECK(nullptr != ut);
-
-  // FILETIME has an earlier date base than time_t (1/1/1970), so subtract off
-  // the difference.
-  SYSTEMTIME base_st;
-  memset(&base_st, 0, sizeof(base_st));
-  base_st.wDay = 1;
-  base_st.wMonth = 1;
-  base_st.wYear = 1970;
-
-  FILETIME base_ft;
-  SystemTimeToFileTime(&base_st, &base_ft);
-
-  ULARGE_INTEGER base_ul, current_ul;
-  memcpy(&base_ul, &base_ft, sizeof(FILETIME));
-  memcpy(&current_ul, &ft, sizeof(FILETIME));
-
-  // Divide by big number to convert to seconds, then subtract out the 1970
-  // base date value.
-  const ULONGLONG RATIO = 10000000;
-  *ut = static_cast<time_t>((current_ul.QuadPart - base_ul.QuadPart) / RATIO);
-}
-
-void UnixTimeToFileTime(const time_t& ut, FILETIME* ft) {
-  RTC_DCHECK(nullptr != ft);
-
-  // FILETIME has an earlier date base than time_t (1/1/1970), so add in
-  // the difference.
-  SYSTEMTIME base_st;
-  memset(&base_st, 0, sizeof(base_st));
-  base_st.wDay = 1;
-  base_st.wMonth = 1;
-  base_st.wYear = 1970;
-
-  FILETIME base_ft;
-  SystemTimeToFileTime(&base_st, &base_ft);
-
-  ULARGE_INTEGER base_ul;
-  memcpy(&base_ul, &base_ft, sizeof(FILETIME));
-
-  // Multiply by big number to convert to 100ns units, then add in the 1970
-  // base date value.
-  const ULONGLONG RATIO = 10000000;
-  ULARGE_INTEGER current_ul;
-  current_ul.QuadPart = base_ul.QuadPart + static_cast<int64_t>(ut) * RATIO;
-  memcpy(ft, &current_ul, sizeof(FILETIME));
-}
-
-bool Utf8ToWindowsFilename(const std::string& utf8, std::wstring* filename) {
-  // TODO: Integrate into fileutils.h
-  // TODO: Handle wide and non-wide cases via TCHAR?
-  // TODO: Skip \\?\ processing if the length is not > MAX_PATH?
-  // TODO: Write unittests
-
-  // Convert to Utf16
-  int wlen =
-      ::MultiByteToWideChar(CP_UTF8, 0, utf8.c_str(),
-                            static_cast<int>(utf8.length() + 1), nullptr, 0);
-  if (0 == wlen) {
-    return false;
-  }
-  wchar_t* wfilename = STACK_ARRAY(wchar_t, wlen);
-  if (0 == ::MultiByteToWideChar(CP_UTF8, 0, utf8.c_str(),
-                                 static_cast<int>(utf8.length() + 1),
-                                 wfilename, wlen)) {
-    return false;
-  }
-  // Replace forward slashes with backslashes
-  std::replace(wfilename, wfilename + wlen, L'/', L'\\');
-  // Convert to complete filename
-  DWORD full_len = ::GetFullPathName(wfilename, 0, nullptr, nullptr);
-  if (0 == full_len) {
-    return false;
-  }
-  wchar_t* filepart = nullptr;
-  wchar_t* full_filename = STACK_ARRAY(wchar_t, full_len + 6);
-  wchar_t* start = full_filename + 6;
-  if (0 == ::GetFullPathName(wfilename, full_len, start, &filepart)) {
-    return false;
-  }
-  // Add long-path prefix
-  const wchar_t kLongPathPrefix[] = L"\\\\?\\UNC";
-  if ((start[0] != L'\\') || (start[1] != L'\\')) {
-    // Non-unc path:     <pathname>
-    //      Becomes: \\?\<pathname>
-    start -= 4;
-    RTC_DCHECK(start >= full_filename);
-    memcpy(start, kLongPathPrefix, 4 * sizeof(wchar_t));
-  } else if (start[2] != L'?') {
-    // Unc path:       \\<server>\<pathname>
-    //  Becomes: \\?\UNC\<server>\<pathname>
-    start -= 6;
-    RTC_DCHECK(start >= full_filename);
-    memcpy(start, kLongPathPrefix, 7 * sizeof(wchar_t));
-  } else {
-    // Already in long-path form.
-  }
-  filename->assign(start);
-  return true;
-}
-
-bool GetOsVersion(int* major, int* minor, int* build) {
-  OSVERSIONINFO info = {0};
-  info.dwOSVersionInfoSize = sizeof(info);
-  if (GetVersionEx(&info)) {
-    if (major) *major = info.dwMajorVersion;
-    if (minor) *minor = info.dwMinorVersion;
-    if (build) *build = info.dwBuildNumber;
-    return true;
-  }
-  return false;
-}
-
-bool GetCurrentProcessIntegrityLevel(int* level) {
-  bool ret = false;
-  HANDLE process = ::GetCurrentProcess(), token;
-  if (OpenProcessToken(process, TOKEN_QUERY | TOKEN_QUERY_SOURCE, &token)) {
-    DWORD size;
-    if (!GetTokenInformation(token, TokenIntegrityLevel, nullptr, 0, &size) &&
-        GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
-      char* buf = STACK_ARRAY(char, size);
-      TOKEN_MANDATORY_LABEL* til =
-          reinterpret_cast<TOKEN_MANDATORY_LABEL*>(buf);
-      if (GetTokenInformation(token, TokenIntegrityLevel, til, size, &size)) {
-
-        DWORD count = *GetSidSubAuthorityCount(til->Label.Sid);
-        *level = *GetSidSubAuthority(til->Label.Sid, count - 1);
-        ret = true;
-      }
-    }
-    CloseHandle(token);
-  }
-  return ret;
-}
-
-}  // namespace rtc