Removing HTTPS and SOCKS proxy server code.

webrtc/base/httpcommon.cc

Index: webrtc/base/httpcommon.cc
diff --git a/webrtc/base/httpcommon.cc b/webrtc/base/httpcommon.cc
deleted file mode 100644
index 031505b7f9f3915cfddced7362bcd9661c825b72..0000000000000000000000000000000000000000
--- a/webrtc/base/httpcommon.cc
+++ /dev/null
@@ -1,1009 +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 <time.h>
-
-#if defined(WEBRTC_WIN)
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#include <winsock2.h>
-#include <ws2tcpip.h>
-#define SECURITY_WIN32
-#include <security.h>
-#endif
-
-#include <algorithm>
-
-#include "webrtc/base/arraysize.h"
-#include "webrtc/base/base64.h"
-#include "webrtc/base/checks.h"
-#include "webrtc/base/cryptstring.h"
-#include "webrtc/base/httpcommon-inl.h"
-#include "webrtc/base/httpcommon.h"
-#include "webrtc/base/messagedigest.h"
-#include "webrtc/base/socketaddress.h"
-#include "webrtc/base/stringencode.h"
-#include "webrtc/base/stringutils.h"
-
-namespace rtc {
-
-#if defined(WEBRTC_WIN)
-extern const ConstantLabel SECURITY_ERRORS[];
-#endif
-
-//////////////////////////////////////////////////////////////////////
-// Enum - TODO: expose globally later?
-//////////////////////////////////////////////////////////////////////
-
-bool find_string(size_t& index, const std::string& needle,
-                 const char* const haystack[], size_t max_index) {
-  for (index=0; index<max_index; ++index) {
-    if (_stricmp(needle.c_str(), haystack[index]) == 0) {
-      return true;
-    }
-  }
-  return false;
-}
-
-template<class E>
-struct Enum {
-  static const char** Names;
-  static size_t Size;
-
-  static inline const char* Name(E val) { return Names[val]; }
-  static inline bool Parse(E& val, const std::string& name) {
-    size_t index;
-    if (!find_string(index, name, Names, Size))
-      return false;
-    val = static_cast<E>(index);
-    return true;
-  }
-
-  E val;
-
-  inline operator E&() { return val; }
-  inline Enum& operator=(E rhs) { val = rhs; return *this; }
-
-  inline const char* name() const { return Name(val); }
-  inline bool assign(const std::string& name) { return Parse(val, name); }
-  inline Enum& operator=(const std::string& rhs) { assign(rhs); return *this; }
-};
-
-#define ENUM(e,n) \
-  template<> const char** Enum<e>::Names = n; \
-  template<> size_t Enum<e>::Size = sizeof(n)/sizeof(n[0])
-
-//////////////////////////////////////////////////////////////////////
-// HttpCommon
-//////////////////////////////////////////////////////////////////////
-
-static const char* kHttpVersions[HVER_LAST+1] = {
-  "1.0", "1.1", "Unknown"
-};
-ENUM(HttpVersion, kHttpVersions);
-
-static const char* kHttpVerbs[HV_LAST+1] = {
-  "GET", "POST", "PUT", "DELETE", "CONNECT", "HEAD"
-};
-ENUM(HttpVerb, kHttpVerbs);
-
-static const char* kHttpHeaders[HH_LAST+1] = {
-  "Age",
-  "Cache-Control",
-  "Connection",
-  "Content-Disposition",
-  "Content-Length",
-  "Content-Range",
-  "Content-Type",
-  "Cookie",
-  "Date",
-  "ETag",
-  "Expires",
-  "Host",
-  "If-Modified-Since",
-  "If-None-Match",
-  "Keep-Alive",
-  "Last-Modified",
-  "Location",
-  "Proxy-Authenticate",
-  "Proxy-Authorization",
-  "Proxy-Connection",
-  "Range",
-  "Set-Cookie",
-  "TE",
-  "Trailers",
-  "Transfer-Encoding",
-  "Upgrade",
-  "User-Agent",
-  "WWW-Authenticate",
-};
-ENUM(HttpHeader, kHttpHeaders);
-
-const char* ToString(HttpVersion version) {
-  return Enum<HttpVersion>::Name(version);
-}
-
-bool FromString(HttpVersion& version, const std::string& str) {
-  return Enum<HttpVersion>::Parse(version, str);
-}
-
-const char* ToString(HttpVerb verb) {
-  return Enum<HttpVerb>::Name(verb);
-}
-
-bool FromString(HttpVerb& verb, const std::string& str) {
-  return Enum<HttpVerb>::Parse(verb, str);
-}
-
-const char* ToString(HttpHeader header) {
-  return Enum<HttpHeader>::Name(header);
-}
-
-bool FromString(HttpHeader& header, const std::string& str) {
-  return Enum<HttpHeader>::Parse(header, str);
-}
-
-bool HttpCodeHasBody(uint32_t code) {
-  return !HttpCodeIsInformational(code)
-         && (code != HC_NO_CONTENT) && (code != HC_NOT_MODIFIED);
-}
-
-bool HttpCodeIsCacheable(uint32_t code) {
-  switch (code) {
-  case HC_OK:
-  case HC_NON_AUTHORITATIVE:
-  case HC_PARTIAL_CONTENT:
-  case HC_MULTIPLE_CHOICES:
-  case HC_MOVED_PERMANENTLY:
-  case HC_GONE:
-    return true;
-  default:
-    return false;
-  }
-}
-
-bool HttpHeaderIsEndToEnd(HttpHeader header) {
-  switch (header) {
-  case HH_CONNECTION:
-  case HH_KEEP_ALIVE:
-  case HH_PROXY_AUTHENTICATE:
-  case HH_PROXY_AUTHORIZATION:
-  case HH_PROXY_CONNECTION:  // Note part of RFC... this is non-standard header
-  case HH_TE:
-  case HH_TRAILERS:
-  case HH_TRANSFER_ENCODING:
-  case HH_UPGRADE:
-    return false;
-  default:
-    return true;
-  }
-}
-
-bool HttpHeaderIsCollapsible(HttpHeader header) {
-  switch (header) {
-  case HH_SET_COOKIE:
-  case HH_PROXY_AUTHENTICATE:
-  case HH_WWW_AUTHENTICATE:
-    return false;
-  default:
-    return true;
-  }
-}
-
-bool HttpShouldKeepAlive(const HttpData& data) {
-  std::string connection;
-  if ((data.hasHeader(HH_PROXY_CONNECTION, &connection)
-      || data.hasHeader(HH_CONNECTION, &connection))) {
-    return (_stricmp(connection.c_str(), "Keep-Alive") == 0);
-  }
-  return (data.version >= HVER_1_1);
-}
-
-namespace {
-
-inline bool IsEndOfAttributeName(size_t pos, size_t len, const char * data) {
-  if (pos >= len)
-    return true;
-  if (isspace(static_cast<unsigned char>(data[pos])))
-    return true;
-  // The reason for this complexity is that some attributes may contain trailing
-  // equal signs (like base64 tokens in Negotiate auth headers)
-  if ((pos+1 < len) && (data[pos] == '=') &&
-      !isspace(static_cast<unsigned char>(data[pos+1])) &&
-      (data[pos+1] != '=')) {
-    return true;
-  }
-  return false;
-}
-
-// TODO: unittest for EscapeAttribute and HttpComposeAttributes.
-
-std::string EscapeAttribute(const std::string& attribute) {
-  const size_t kMaxLength = attribute.length() * 2 + 1;
-  char* buffer = STACK_ARRAY(char, kMaxLength);
-  size_t len = escape(buffer, kMaxLength, attribute.data(), attribute.length(),
-                      "\"", '\\');
-  return std::string(buffer, len);
-}
-
-}  // anonymous namespace
-
-void HttpComposeAttributes(const HttpAttributeList& attributes, char separator,
-                           std::string* composed) {
-  std::stringstream ss;
-  for (size_t i=0; i<attributes.size(); ++i) {
-    if (i > 0) {
-      ss << separator << " ";
-    }
-    ss << attributes[i].first;
-    if (!attributes[i].second.empty()) {
-      ss << "=\"" << EscapeAttribute(attributes[i].second) << "\"";
-    }
-  }
-  *composed = ss.str();
-}
-
-void HttpParseAttributes(const char * data, size_t len,
-                         HttpAttributeList& attributes) {
-  size_t pos = 0;
-  while (true) {
-    // Skip leading whitespace
-    while ((pos < len) && isspace(static_cast<unsigned char>(data[pos]))) {
-      ++pos;
-    }
-
-    // End of attributes?
-    if (pos >= len)
-      return;
-
-    // Find end of attribute name
-    size_t start = pos;
-    while (!IsEndOfAttributeName(pos, len, data)) {
-      ++pos;
-    }
-
-    HttpAttribute attribute;
-    attribute.first.assign(data + start, data + pos);
-
-    // Attribute has value?
-    if ((pos < len) && (data[pos] == '=')) {
-      ++pos; // Skip '='
-      // Check if quoted value
-      if ((pos < len) && (data[pos] == '"')) {
-        while (++pos < len) {
-          if (data[pos] == '"') {
-            ++pos;
-            break;
-          }
-          if ((data[pos] == '\\') && (pos + 1 < len))
-            ++pos;
-          attribute.second.append(1, data[pos]);
-        }
-      } else {
-        while ((pos < len) &&
-            !isspace(static_cast<unsigned char>(data[pos])) &&
-            (data[pos] != ',')) {
-          attribute.second.append(1, data[pos++]);
-        }
-      }
-    }
-
-    attributes.push_back(attribute);
-    if ((pos < len) && (data[pos] == ',')) ++pos; // Skip ','
-  }
-}
-
-bool HttpHasAttribute(const HttpAttributeList& attributes,
-                      const std::string& name,
-                      std::string* value) {
-  for (HttpAttributeList::const_iterator it = attributes.begin();
-       it != attributes.end(); ++it) {
-    if (it->first == name) {
-      if (value) {
-        *value = it->second;
-      }
-      return true;
-    }
-  }
-  return false;
-}
-
-bool HttpHasNthAttribute(HttpAttributeList& attributes,
-                         size_t index,
-                         std::string* name,
-                         std::string* value) {
-  if (index >= attributes.size())
-    return false;
-
-  if (name)
-    *name = attributes[index].first;
-  if (value)
-    *value = attributes[index].second;
-  return true;
-}
-
-bool HttpDateToSeconds(const std::string& date, time_t* seconds) {
-  const char* const kTimeZones[] = {
-    "UT", "GMT", "EST", "EDT", "CST", "CDT", "MST", "MDT", "PST", "PDT",
-    "A", "B", "C", "D", "E", "F", "G", "H", "I", "K", "L", "M",
-    "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y"
-  };
-  const int kTimeZoneOffsets[] = {
-     0,  0, -5, -4, -6, -5, -7, -6, -8, -7,
-    -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12,
-     1,  2,  3,  4,  5,  6,  7,  8,  9,  10,  11,  12
-  };
-
-  RTC_DCHECK(nullptr != seconds);
-  struct tm tval;
-  memset(&tval, 0, sizeof(tval));
-  char month[4], zone[6];
-  memset(month, 0, sizeof(month));
-  memset(zone, 0, sizeof(zone));
-
-  if (7 != sscanf(date.c_str(), "%*3s, %d %3s %d %d:%d:%d %5c",
-                  &tval.tm_mday, month, &tval.tm_year,
-                  &tval.tm_hour, &tval.tm_min, &tval.tm_sec, zone)) {
-    return false;
-  }
-  switch (toupper(month[2])) {
-  case 'N': tval.tm_mon = (month[1] == 'A') ? 0 : 5; break;
-  case 'B': tval.tm_mon = 1; break;
-  case 'R': tval.tm_mon = (month[0] == 'M') ? 2 : 3; break;
-  case 'Y': tval.tm_mon = 4; break;
-  case 'L': tval.tm_mon = 6; break;
-  case 'G': tval.tm_mon = 7; break;
-  case 'P': tval.tm_mon = 8; break;
-  case 'T': tval.tm_mon = 9; break;
-  case 'V': tval.tm_mon = 10; break;
-  case 'C': tval.tm_mon = 11; break;
-  }
-  tval.tm_year -= 1900;
-  time_t gmt, non_gmt = mktime(&tval);
-  if ((zone[0] == '+') || (zone[0] == '-')) {
-    if (!isdigit(zone[1]) || !isdigit(zone[2])
-        || !isdigit(zone[3]) || !isdigit(zone[4])) {
-      return false;
-    }
-    int hours = (zone[1] - '0') * 10 + (zone[2] - '0');
-    int minutes = (zone[3] - '0') * 10 + (zone[4] - '0');
-    int offset = (hours * 60 + minutes) * 60;
-    gmt = non_gmt + ((zone[0] == '+') ? offset : -offset);
-  } else {
-    size_t zindex;
-    if (!find_string(zindex, zone, kTimeZones, arraysize(kTimeZones))) {
-      return false;
-    }
-    gmt = non_gmt + kTimeZoneOffsets[zindex] * 60 * 60;
-  }
-  // TODO: Android should support timezone, see b/2441195
-#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) || defined(WEBRTC_ANDROID) || defined(BSD)
-  tm *tm_for_timezone = localtime(&gmt);
-  *seconds = gmt + tm_for_timezone->tm_gmtoff;
-#else
-#if defined(_MSC_VER) && _MSC_VER >= 1900
-  long timezone = 0;
-  _get_timezone(&timezone);
-#endif
-  *seconds = gmt - timezone;
-#endif
-  return true;
-}
-
-std::string HttpAddress(const SocketAddress& address, bool secure) {
-  return (address.port() == HttpDefaultPort(secure))
-          ? address.hostname() : address.ToString();
-}
-
-//////////////////////////////////////////////////////////////////////
-// HttpData
-//////////////////////////////////////////////////////////////////////
-
-HttpData::HttpData() : version(HVER_1_1) {
-}
-
-HttpData::~HttpData() = default;
-
-void
-HttpData::clear(bool release_document) {
-  // Clear headers first, since releasing a document may have far-reaching
-  // effects.
-  headers_.clear();
-  if (release_document) {
-    document.reset();
-  }
-}
-
-void
-HttpData::copy(const HttpData& src) {
-  headers_ = src.headers_;
-}
-
-void
-HttpData::changeHeader(const std::string& name, const std::string& value,
-                       HeaderCombine combine) {
-  if (combine == HC_AUTO) {
-    HttpHeader header;
-    // Unrecognized headers are collapsible
-    combine = !FromString(header, name) || HttpHeaderIsCollapsible(header)
-              ? HC_YES : HC_NO;
-  } else if (combine == HC_REPLACE) {
-    headers_.erase(name);
-    combine = HC_NO;
-  }
-  // At this point, combine is one of (YES, NO, NEW)
-  if (combine != HC_NO) {
-    HeaderMap::iterator it = headers_.find(name);
-    if (it != headers_.end()) {
-      if (combine == HC_YES) {
-        it->second.append(",");
-        it->second.append(value);
-      }
-      return;
-    }
-  }
-  headers_.insert(HeaderMap::value_type(name, value));
-}
-
-size_t HttpData::clearHeader(const std::string& name) {
-  return headers_.erase(name);
-}
-
-HttpData::iterator HttpData::clearHeader(iterator header) {
-  iterator deprecated = header++;
-  headers_.erase(deprecated);
-  return header;
-}
-
-bool
-HttpData::hasHeader(const std::string& name, std::string* value) const {
-  HeaderMap::const_iterator it = headers_.find(name);
-  if (it == headers_.end()) {
-    return false;
-  } else if (value) {
-    *value = it->second;
-  }
-  return true;
-}
-
-void HttpData::setContent(const std::string& content_type,
-                          StreamInterface* document) {
-  setHeader(HH_CONTENT_TYPE, content_type);
-  setDocumentAndLength(document);
-}
-
-void HttpData::setDocumentAndLength(StreamInterface* document) {
-  // TODO: Consider calling Rewind() here?
-  RTC_DCHECK(!hasHeader(HH_CONTENT_LENGTH, nullptr));
-  RTC_DCHECK(!hasHeader(HH_TRANSFER_ENCODING, nullptr));
-  RTC_DCHECK(document != nullptr);
-  this->document.reset(document);
-  size_t content_length = 0;
-  if (this->document->GetAvailable(&content_length)) {
-    char buffer[32];
-    sprintfn(buffer, sizeof(buffer), "%d", content_length);
-    setHeader(HH_CONTENT_LENGTH, buffer);
-  } else {
-    setHeader(HH_TRANSFER_ENCODING, "chunked");
-  }
-}
-
-//
-// HttpRequestData
-//
-
-void
-HttpRequestData::clear(bool release_document) {
-  verb = HV_GET;
-  path.clear();
-  HttpData::clear(release_document);
-}
-
-void
-HttpRequestData::copy(const HttpRequestData& src) {
-  verb = src.verb;
-  path = src.path;
-  HttpData::copy(src);
-}
-
-size_t
-HttpRequestData::formatLeader(char* buffer, size_t size) const {
-  RTC_DCHECK(path.find(' ') == std::string::npos);
-  return sprintfn(buffer, size, "%s %.*s HTTP/%s", ToString(verb), path.size(),
-                  path.data(), ToString(version));
-}
-
-HttpError
-HttpRequestData::parseLeader(const char* line, size_t len) {
-  unsigned int vmajor, vminor;
-  int vend, dstart, dend;
-  // sscanf isn't safe with strings that aren't null-terminated, and there is
-  // no guarantee that |line| is. Create a local copy that is null-terminated.
-  std::string line_str(line, len);
-  line = line_str.c_str();
-  if ((sscanf(line, "%*s%n %n%*s%n HTTP/%u.%u",
-              &vend, &dstart, &dend, &vmajor, &vminor) != 2)
-      || (vmajor != 1)) {
-    return HE_PROTOCOL;
-  }
-  if (vminor == 0) {
-    version = HVER_1_0;
-  } else if (vminor == 1) {
-    version = HVER_1_1;
-  } else {
-    return HE_PROTOCOL;
-  }
-  std::string sverb(line, vend);
-  if (!FromString(verb, sverb.c_str())) {
-    return HE_PROTOCOL; // !?! HC_METHOD_NOT_SUPPORTED?
-  }
-  path.assign(line + dstart, line + dend);
-  return HE_NONE;
-}
-
-bool HttpRequestData::getAbsoluteUri(std::string* uri) const {
-  if (HV_CONNECT == verb)
-    return false;
-  Url<char> url(path);
-  if (url.valid()) {
-    uri->assign(path);
-    return true;
-  }
-  std::string host;
-  if (!hasHeader(HH_HOST, &host))
-    return false;
-  url.set_address(host);
-  url.set_full_path(path);
-  uri->assign(url.url());
-  return url.valid();
-}
-
-bool HttpRequestData::getRelativeUri(std::string* host,
-                                     std::string* path) const
-{
-  if (HV_CONNECT == verb)
-    return false;
-  Url<char> url(this->path);
-  if (url.valid()) {
-    host->assign(url.address());
-    path->assign(url.full_path());
-    return true;
-  }
-  if (!hasHeader(HH_HOST, host))
-    return false;
-  path->assign(this->path);
-  return true;
-}
-
-//
-// HttpResponseData
-//
-
-void
-HttpResponseData::clear(bool release_document) {
-  scode = HC_INTERNAL_SERVER_ERROR;
-  message.clear();
-  HttpData::clear(release_document);
-}
-
-void
-HttpResponseData::copy(const HttpResponseData& src) {
-  scode = src.scode;
-  message = src.message;
-  HttpData::copy(src);
-}
-
-void HttpResponseData::set_success(uint32_t scode) {
-  this->scode = scode;
-  message.clear();
-  setHeader(HH_CONTENT_LENGTH, "0", false);
-}
-
-void HttpResponseData::set_success(const std::string& content_type,
-                                   StreamInterface* document,
-                                   uint32_t scode) {
-  this->scode = scode;
-  message.erase(message.begin(), message.end());
-  setContent(content_type, document);
-}
-
-void HttpResponseData::set_redirect(const std::string& location,
-                                    uint32_t scode) {
-  this->scode = scode;
-  message.clear();
-  setHeader(HH_LOCATION, location);
-  setHeader(HH_CONTENT_LENGTH, "0", false);
-}
-
-void HttpResponseData::set_error(uint32_t scode) {
-  this->scode = scode;
-  message.clear();
-  setHeader(HH_CONTENT_LENGTH, "0", false);
-}
-
-size_t
-HttpResponseData::formatLeader(char* buffer, size_t size) const {
-  size_t len = sprintfn(buffer, size, "HTTP/%s %lu", ToString(version), scode);
-  if (!message.empty()) {
-    len += sprintfn(buffer + len, size - len, " %.*s",
-                    message.size(), message.data());
-  }
-  return len;
-}
-
-HttpError
-HttpResponseData::parseLeader(const char* line, size_t len) {
-  size_t pos = 0;
-  unsigned int vmajor, vminor, temp_scode;
-  int temp_pos;
-  // sscanf isn't safe with strings that aren't null-terminated, and there is
-  // no guarantee that |line| is. Create a local copy that is null-terminated.
-  std::string line_str(line, len);
-  line = line_str.c_str();
-  if (sscanf(line, "HTTP %u%n",
-             &temp_scode, &temp_pos) == 1) {
-    // This server's response has no version. :( NOTE: This happens for every
-    // response to requests made from Chrome plugins, regardless of the server's
-    // behaviour.
-    LOG(LS_VERBOSE) << "HTTP version missing from response";
-    version = HVER_UNKNOWN;
-  } else if ((sscanf(line, "HTTP/%u.%u %u%n",
-                     &vmajor, &vminor, &temp_scode, &temp_pos) == 3)
-             && (vmajor == 1)) {
-    // This server's response does have a version.
-    if (vminor == 0) {
-      version = HVER_1_0;
-    } else if (vminor == 1) {
-      version = HVER_1_1;
-    } else {
-      return HE_PROTOCOL;
-    }
-  } else {
-    return HE_PROTOCOL;
-  }
-  scode = temp_scode;
-  pos = static_cast<size_t>(temp_pos);
-  while ((pos < len) && isspace(static_cast<unsigned char>(line[pos]))) ++pos;
-  message.assign(line + pos, len - pos);
-  return HE_NONE;
-}
-
-//////////////////////////////////////////////////////////////////////
-// Http Authentication
-//////////////////////////////////////////////////////////////////////
-
-std::string quote(const std::string& str) {
-  std::string result;
-  result.push_back('"');
-  for (size_t i=0; i<str.size(); ++i) {
-    if ((str[i] == '"') || (str[i] == '\\'))
-      result.push_back('\\');
-    result.push_back(str[i]);
-  }
-  result.push_back('"');
-  return result;
-}
-
-#if defined(WEBRTC_WIN)
-struct NegotiateAuthContext : public HttpAuthContext {
-  CredHandle cred;
-  CtxtHandle ctx;
-  size_t steps;
-  bool specified_credentials;
-
-  NegotiateAuthContext(const std::string& auth, CredHandle c1, CtxtHandle c2)
-  : HttpAuthContext(auth), cred(c1), ctx(c2), steps(0),
-    specified_credentials(false)
-  { }
-
-  virtual ~NegotiateAuthContext() {
-    DeleteSecurityContext(&ctx);
-    FreeCredentialsHandle(&cred);
-  }
-};
-#endif // WEBRTC_WIN
-
-HttpAuthResult HttpAuthenticate(
-  const char * challenge, size_t len,
-  const SocketAddress& server,
-  const std::string& method, const std::string& uri,
-  const std::string& username, const CryptString& password,
-  HttpAuthContext *& context, std::string& response, std::string& auth_method)
-{
-  HttpAttributeList args;
-  HttpParseAttributes(challenge, len, args);
-  HttpHasNthAttribute(args, 0, &auth_method, nullptr);
-
-  if (context && (context->auth_method != auth_method))
-    return HAR_IGNORE;
-
-  // BASIC
-  if (_stricmp(auth_method.c_str(), "basic") == 0) {
-    if (context)
-      return HAR_CREDENTIALS; // Bad credentials
-    if (username.empty())
-      return HAR_CREDENTIALS; // Missing credentials
-
-    context = new HttpAuthContext(auth_method);
-
-    // TODO: convert sensitive to a secure buffer that gets securely deleted
-    //std::string decoded = username + ":" + password;
-    size_t len = username.size() + password.GetLength() + 2;
-    char * sensitive = new char[len];
-    size_t pos = strcpyn(sensitive, len, username.data(), username.size());
-    pos += strcpyn(sensitive + pos, len - pos, ":");
-    password.CopyTo(sensitive + pos, true);
-
-    response = auth_method;
-    response.append(" ");
-    // TODO: create a sensitive-source version of Base64::encode
-    response.append(Base64::Encode(sensitive));
-    memset(sensitive, 0, len);
-    delete [] sensitive;
-    return HAR_RESPONSE;
-  }
-
-  // DIGEST
-  if (_stricmp(auth_method.c_str(), "digest") == 0) {
-    if (context)
-      return HAR_CREDENTIALS; // Bad credentials
-    if (username.empty())
-      return HAR_CREDENTIALS; // Missing credentials
-
-    context = new HttpAuthContext(auth_method);
-
-    std::string cnonce, ncount;
-    char buffer[256];
-    sprintf(buffer, "%d", static_cast<int>(time(0)));
-    cnonce = MD5(buffer);
-    ncount = "00000001";
-
-    std::string realm, nonce, qop, opaque;
-    HttpHasAttribute(args, "realm", &realm);
-    HttpHasAttribute(args, "nonce", &nonce);
-    bool has_qop = HttpHasAttribute(args, "qop", &qop);
-    bool has_opaque = HttpHasAttribute(args, "opaque", &opaque);
-
-    // TODO: convert sensitive to be secure buffer
-    //std::string A1 = username + ":" + realm + ":" + password;
-    size_t len = username.size() + realm.size() + password.GetLength() + 3;
-    char * sensitive = new char[len];  // A1
-    size_t pos = strcpyn(sensitive, len, username.data(), username.size());
-    pos += strcpyn(sensitive + pos, len - pos, ":");
-    pos += strcpyn(sensitive + pos, len - pos, realm.c_str());
-    pos += strcpyn(sensitive + pos, len - pos, ":");
-    password.CopyTo(sensitive + pos, true);
-
-    std::string A2 = method + ":" + uri;
-    std::string middle;
-    if (has_qop) {
-      qop = "auth";
-      middle = nonce + ":" + ncount + ":" + cnonce + ":" + qop;
-    } else {
-      middle = nonce;
-    }
-    std::string HA1 = MD5(sensitive);
-    memset(sensitive, 0, len);
-    delete [] sensitive;
-    std::string HA2 = MD5(A2);
-    std::string dig_response = MD5(HA1 + ":" + middle + ":" + HA2);
-
-    std::stringstream ss;
-    ss << auth_method;
-    ss << " username=" << quote(username);
-    ss << ", realm=" << quote(realm);
-    ss << ", nonce=" << quote(nonce);
-    ss << ", uri=" << quote(uri);
-    if (has_qop) {
-      ss << ", qop=" << qop;
-      ss << ", nc="  << ncount;
-      ss << ", cnonce=" << quote(cnonce);
-    }
-    ss << ", response=\"" << dig_response << "\"";
-    if (has_opaque) {
-      ss << ", opaque=" << quote(opaque);
-    }
-    response = ss.str();
-    return HAR_RESPONSE;
-  }
-
-#if defined(WEBRTC_WIN)
-#if 1
-  bool want_negotiate = (_stricmp(auth_method.c_str(), "negotiate") == 0);
-  bool want_ntlm = (_stricmp(auth_method.c_str(), "ntlm") == 0);
-  // SPNEGO & NTLM
-  if (want_negotiate || want_ntlm) {
-    const size_t MAX_MESSAGE = 12000, MAX_SPN = 256;
-    char out_buf[MAX_MESSAGE], spn[MAX_SPN];
-
-#if 0 // Requires funky windows versions
-    DWORD len = MAX_SPN;
-    if (DsMakeSpn("HTTP", server.HostAsURIString().c_str(), nullptr,
-                  server.port(),
-                  0, &len, spn) != ERROR_SUCCESS) {
-      LOG_F(WARNING) << "(Negotiate) - DsMakeSpn failed";
-      return HAR_IGNORE;
-    }
-#else
-    sprintfn(spn, MAX_SPN, "HTTP/%s", server.ToString().c_str());
-#endif
-
-    SecBuffer out_sec;
-    out_sec.pvBuffer   = out_buf;
-    out_sec.cbBuffer   = sizeof(out_buf);
-    out_sec.BufferType = SECBUFFER_TOKEN;
-
-    SecBufferDesc out_buf_desc;
-    out_buf_desc.ulVersion = 0;
-    out_buf_desc.cBuffers  = 1;
-    out_buf_desc.pBuffers  = &out_sec;
-
-    const ULONG NEG_FLAGS_DEFAULT =
-      //ISC_REQ_ALLOCATE_MEMORY
-      ISC_REQ_CONFIDENTIALITY
-      //| ISC_REQ_EXTENDED_ERROR
-      //| ISC_REQ_INTEGRITY
-      | ISC_REQ_REPLAY_DETECT
-      | ISC_REQ_SEQUENCE_DETECT
-      //| ISC_REQ_STREAM
-      //| ISC_REQ_USE_SUPPLIED_CREDS
-      ;
-
-    ::TimeStamp lifetime;
-    SECURITY_STATUS ret = S_OK;
-    ULONG ret_flags = 0, flags = NEG_FLAGS_DEFAULT;
-
-    bool specify_credentials = !username.empty();
-    size_t steps = 0;
-
-    // uint32_t now = Time();
-
-    NegotiateAuthContext * neg = static_cast<NegotiateAuthContext *>(context);
-    if (neg) {
-      const size_t max_steps = 10;
-      if (++neg->steps >= max_steps) {
-        LOG(WARNING) << "AsyncHttpsProxySocket::Authenticate(Negotiate) too many retries";
-        return HAR_ERROR;
-      }
-      steps = neg->steps;
-
-      std::string challenge, decoded_challenge;
-      if (HttpHasNthAttribute(args, 1, &challenge, nullptr) &&
-          Base64::Decode(challenge, Base64::DO_STRICT, &decoded_challenge,
-                         nullptr)) {
-        SecBuffer in_sec;
-        in_sec.pvBuffer   = const_cast<char *>(decoded_challenge.data());
-        in_sec.cbBuffer   = static_cast<unsigned long>(decoded_challenge.size());
-        in_sec.BufferType = SECBUFFER_TOKEN;
-
-        SecBufferDesc in_buf_desc;
-        in_buf_desc.ulVersion = 0;
-        in_buf_desc.cBuffers  = 1;
-        in_buf_desc.pBuffers  = &in_sec;
-
-        ret = InitializeSecurityContextA(&neg->cred, &neg->ctx, spn, flags, 0, SECURITY_NATIVE_DREP, &in_buf_desc, 0, &neg->ctx, &out_buf_desc, &ret_flags, &lifetime);
-        //LOG(INFO) << "$$$ InitializeSecurityContext @ " << TimeSince(now);
-        if (FAILED(ret)) {
-          LOG(LS_ERROR) << "InitializeSecurityContext returned: "
-                      << ErrorName(ret, SECURITY_ERRORS);
-          return HAR_ERROR;
-        }
-      } else if (neg->specified_credentials) {
-        // Try again with default credentials
-        specify_credentials = false;
-        delete context;
-        context = neg = 0;
-      } else {
-        return HAR_CREDENTIALS;
-      }
-    }
-
-    if (!neg) {
-      unsigned char userbuf[256], passbuf[256], domainbuf[16];
-      SEC_WINNT_AUTH_IDENTITY_A auth_id, * pauth_id = 0;
-      if (specify_credentials) {
-        memset(&auth_id, 0, sizeof(auth_id));
-        size_t len = password.GetLength()+1;
-        char * sensitive = new char[len];
-        password.CopyTo(sensitive, true);
-        std::string::size_type pos = username.find('\\');
-        if (pos == std::string::npos) {
-          auth_id.UserLength = static_cast<unsigned long>(
-              std::min(sizeof(userbuf) - 1, username.size()));
-          memcpy(userbuf, username.c_str(), auth_id.UserLength);
-          userbuf[auth_id.UserLength] = 0;
-          auth_id.DomainLength = 0;
-          domainbuf[auth_id.DomainLength] = 0;
-          auth_id.PasswordLength = static_cast<unsigned long>(
-              std::min(sizeof(passbuf) - 1, password.GetLength()));
-          memcpy(passbuf, sensitive, auth_id.PasswordLength);
-          passbuf[auth_id.PasswordLength] = 0;
-        } else {
-          auth_id.UserLength = static_cast<unsigned long>(
-              std::min(sizeof(userbuf) - 1, username.size() - pos - 1));
-          memcpy(userbuf, username.c_str() + pos + 1, auth_id.UserLength);
-          userbuf[auth_id.UserLength] = 0;
-          auth_id.DomainLength =
-              static_cast<unsigned long>(std::min(sizeof(domainbuf) - 1, pos));
-          memcpy(domainbuf, username.c_str(), auth_id.DomainLength);
-          domainbuf[auth_id.DomainLength] = 0;
-          auth_id.PasswordLength = static_cast<unsigned long>(
-              std::min(sizeof(passbuf) - 1, password.GetLength()));
-          memcpy(passbuf, sensitive, auth_id.PasswordLength);
-          passbuf[auth_id.PasswordLength] = 0;
-        }
-        memset(sensitive, 0, len);
-        delete [] sensitive;
-        auth_id.User = userbuf;
-        auth_id.Domain = domainbuf;
-        auth_id.Password = passbuf;
-        auth_id.Flags = SEC_WINNT_AUTH_IDENTITY_ANSI;
-        pauth_id = &auth_id;
-        LOG(LS_VERBOSE) << "Negotiate protocol: Using specified credentials";
-      } else {
-        LOG(LS_VERBOSE) << "Negotiate protocol: Using default credentials";
-      }
-
-      CredHandle cred;
-      ret = AcquireCredentialsHandleA(
-          0, const_cast<char*>(want_negotiate ? NEGOSSP_NAME_A : NTLMSP_NAME_A),
-          SECPKG_CRED_OUTBOUND, 0, pauth_id, 0, 0, &cred, &lifetime);
-      //LOG(INFO) << "$$$ AcquireCredentialsHandle @ " << TimeSince(now);
-      if (ret != SEC_E_OK) {
-        LOG(LS_ERROR) << "AcquireCredentialsHandle error: "
-                    << ErrorName(ret, SECURITY_ERRORS);
-        return HAR_IGNORE;
-      }
-
-      //CSecBufferBundle<5, CSecBufferBase::FreeSSPI> sb_out;
-
-      CtxtHandle ctx;
-      ret = InitializeSecurityContextA(&cred, 0, spn, flags, 0, SECURITY_NATIVE_DREP, 0, 0, &ctx, &out_buf_desc, &ret_flags, &lifetime);
-      //LOG(INFO) << "$$$ InitializeSecurityContext @ " << TimeSince(now);
-      if (FAILED(ret)) {
-        LOG(LS_ERROR) << "InitializeSecurityContext returned: "
-                    << ErrorName(ret, SECURITY_ERRORS);
-        FreeCredentialsHandle(&cred);
-        return HAR_IGNORE;
-      }
-
-      RTC_DCHECK(!context);
-      context = neg = new NegotiateAuthContext(auth_method, cred, ctx);
-      neg->specified_credentials = specify_credentials;
-      neg->steps = steps;
-    }
-
-    if ((ret == SEC_I_COMPLETE_NEEDED) || (ret == SEC_I_COMPLETE_AND_CONTINUE)) {
-      ret = CompleteAuthToken(&neg->ctx, &out_buf_desc);
-      //LOG(INFO) << "$$$ CompleteAuthToken @ " << TimeSince(now);
-      LOG(LS_VERBOSE) << "CompleteAuthToken returned: "
-                      << ErrorName(ret, SECURITY_ERRORS);
-      if (FAILED(ret)) {
-        return HAR_ERROR;
-      }
-    }
-
-    //LOG(INFO) << "$$$ NEGOTIATE took " << TimeSince(now) << "ms";
-
-    std::string decoded(out_buf, out_buf + out_sec.cbBuffer);
-    response = auth_method;
-    response.append(" ");
-    response.append(Base64::Encode(decoded));
-    return HAR_RESPONSE;
-  }
-#endif
-#endif // WEBRTC_WIN
-
-  return HAR_IGNORE;
-}
-
-//////////////////////////////////////////////////////////////////////
-
-} // namespace rtc