Some cleanup for the logging code:

* Only include 'tag' for Android. Before there was an
  extra std::string variable per log statement for all
  platforms.
* Remove unused logging macro for Windows and 'module' ctor argument.
* Move httpcommon code out of logging and to where it's used.

Change-Id: I347805d3df2cee2840c0d2eef5bfefaff1cdbf37
Bug: webrtc:8928
Reviewed-on: https://webrtc-review.googlesource.com/57183
Reviewed-by: Jonas Olsson <jonasolsson@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22184}
diff --git a/rtc_base/BUILD.gn b/rtc_base/BUILD.gn
index 117c98c..32f89c72 100644
--- a/rtc_base/BUILD.gn
+++ b/rtc_base/BUILD.gn
@@ -764,7 +764,6 @@
       "win32.h",
       "win32filesystem.cc",
       "win32filesystem.h",
-      "win32securityerrors.cc",
       "win32window.cc",
       "win32window.h",
     ]
diff --git a/rtc_base/httpcommon.cc b/rtc_base/httpcommon.cc
index 345b4aa..e60ad47 100644
--- a/rtc_base/httpcommon.cc
+++ b/rtc_base/httpcommon.cc
@@ -11,7 +11,6 @@
 #include <time.h>
 
 #if defined(WEBRTC_WIN)
-#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <winsock2.h>
 #include <ws2tcpip.h>
@@ -31,10 +30,80 @@
 #include "rtc_base/socketaddress.h"
 
 namespace rtc {
-
+namespace {
 #if defined(WEBRTC_WIN)
-extern const ConstantLabel SECURITY_ERRORS[];
-#endif
+///////////////////////////////////////////////////////////////////////////////
+// ConstantToLabel can be used to easily generate string names from constant
+// values.  This can be useful for logging descriptive names of error messages.
+// Usage:
+//   const ConstantToLabel LIBRARY_ERRORS[] = {
+//     KLABEL(SOME_ERROR),
+//     KLABEL(SOME_OTHER_ERROR),
+//     ...
+//     LASTLABEL
+//   }
+//
+//   int err = LibraryFunc();
+//   LOG(LS_ERROR) << "LibraryFunc returned: "
+//                 << GetErrorName(err, LIBRARY_ERRORS);
+struct ConstantToLabel { int value; const char * label; };
+
+const char* LookupLabel(int value, const ConstantToLabel entries[]) {
+  for (int i = 0; entries[i].label; ++i) {
+    if (value == entries[i].value) {
+      return entries[i].label;
+    }
+  }
+  return 0;
+}
+
+std::string GetErrorName(int err, const ConstantToLabel* err_table) {
+  if (err == 0)
+    return "No error";
+
+  if (err_table != 0) {
+    if (const char* value = LookupLabel(err, err_table))
+      return value;
+  }
+
+  char buffer[16];
+  snprintf(buffer, sizeof(buffer), "0x%08x", err);
+  return buffer;
+}
+
+#define KLABEL(x) { x, #x }
+#define LASTLABEL { 0, 0 }
+
+const ConstantToLabel SECURITY_ERRORS[] = {
+  KLABEL(SEC_I_COMPLETE_AND_CONTINUE),
+  KLABEL(SEC_I_COMPLETE_NEEDED),
+  KLABEL(SEC_I_CONTEXT_EXPIRED),
+  KLABEL(SEC_I_CONTINUE_NEEDED),
+  KLABEL(SEC_I_INCOMPLETE_CREDENTIALS),
+  KLABEL(SEC_I_RENEGOTIATE),
+  KLABEL(SEC_E_CERT_EXPIRED),
+  KLABEL(SEC_E_INCOMPLETE_MESSAGE),
+  KLABEL(SEC_E_INSUFFICIENT_MEMORY),
+  KLABEL(SEC_E_INTERNAL_ERROR),
+  KLABEL(SEC_E_INVALID_HANDLE),
+  KLABEL(SEC_E_INVALID_TOKEN),
+  KLABEL(SEC_E_LOGON_DENIED),
+  KLABEL(SEC_E_NO_AUTHENTICATING_AUTHORITY),
+  KLABEL(SEC_E_NO_CREDENTIALS),
+  KLABEL(SEC_E_NOT_OWNER),
+  KLABEL(SEC_E_OK),
+  KLABEL(SEC_E_SECPKG_NOT_FOUND),
+  KLABEL(SEC_E_TARGET_UNKNOWN),
+  KLABEL(SEC_E_UNKNOWN_CREDENTIALS),
+  KLABEL(SEC_E_UNSUPPORTED_FUNCTION),
+  KLABEL(SEC_E_UNTRUSTED_ROOT),
+  KLABEL(SEC_E_WRONG_PRINCIPAL),
+  LASTLABEL
+};
+#undef KLABEL
+#undef LASTLABEL
+#endif  // defined(WEBRTC_WIN)
+}  // namespace
 
 //////////////////////////////////////////////////////////////////////
 // Enum - TODO: expose globally later?
@@ -865,7 +934,7 @@
         ret = InitializeSecurityContextA(&neg->cred, &neg->ctx, spn, flags, 0, SECURITY_NATIVE_DREP, &in_buf_desc, 0, &neg->ctx, &out_buf_desc, &ret_flags, &lifetime);
         if (FAILED(ret)) {
           RTC_LOG(LS_ERROR) << "InitializeSecurityContext returned: "
-                            << ErrorName(ret, SECURITY_ERRORS);
+                            << GetErrorName(ret, SECURITY_ERRORS);
           return HAR_ERROR;
         }
       } else if (neg->specified_credentials) {
@@ -931,7 +1000,7 @@
           SECPKG_CRED_OUTBOUND, 0, pauth_id, 0, 0, &cred, &lifetime);
       if (ret != SEC_E_OK) {
         RTC_LOG(LS_ERROR) << "AcquireCredentialsHandle error: "
-                          << ErrorName(ret, SECURITY_ERRORS);
+                          << GetErrorName(ret, SECURITY_ERRORS);
         return HAR_IGNORE;
       }
 
@@ -941,7 +1010,7 @@
       ret = InitializeSecurityContextA(&cred, 0, spn, flags, 0, SECURITY_NATIVE_DREP, 0, 0, &ctx, &out_buf_desc, &ret_flags, &lifetime);
       if (FAILED(ret)) {
         RTC_LOG(LS_ERROR) << "InitializeSecurityContext returned: "
-                          << ErrorName(ret, SECURITY_ERRORS);
+                          << GetErrorName(ret, SECURITY_ERRORS);
         FreeCredentialsHandle(&cred);
         return HAR_IGNORE;
       }
@@ -955,7 +1024,7 @@
     if ((ret == SEC_I_COMPLETE_NEEDED) || (ret == SEC_I_COMPLETE_AND_CONTINUE)) {
       ret = CompleteAuthToken(&neg->ctx, &out_buf_desc);
       RTC_LOG(LS_VERBOSE) << "CompleteAuthToken returned: "
-                          << ErrorName(ret, SECURITY_ERRORS);
+                          << GetErrorName(ret, SECURITY_ERRORS);
       if (FAILED(ret)) {
         return HAR_ERROR;
       }
diff --git a/rtc_base/logging.cc b/rtc_base/logging.cc
index 522468c..5d07140 100644
--- a/rtc_base/logging.cc
+++ b/rtc_base/logging.cc
@@ -29,8 +29,6 @@
 static const int kMaxLogLineSize = 1024 - 60;
 #endif  // WEBRTC_MAC && !defined(WEBRTC_IOS) || WEBRTC_ANDROID
 
-static const char kLibjingle[] = "libjingle";
-
 #include <time.h>
 #include <limits.h>
 
@@ -41,7 +39,7 @@
 
 #include "rtc_base/criticalsection.h"
 #include "rtc_base/logging.h"
-#include "rtc_base/platform_thread.h"
+#include "rtc_base/platform_thread_types.h"
 #include "rtc_base/stringencode.h"
 #include "rtc_base/stringutils.h"
 #include "rtc_base/timeutils.h"
@@ -71,32 +69,6 @@
 CriticalSection g_log_crit;
 }  // namespace
 
-/////////////////////////////////////////////////////////////////////////////
-// Constant Labels
-/////////////////////////////////////////////////////////////////////////////
-
-const char* FindLabel(int value, const ConstantLabel entries[]) {
-  for (int i = 0; entries[i].label; ++i) {
-    if (value == entries[i].value) {
-      return entries[i].label;
-    }
-  }
-  return 0;
-}
-
-std::string ErrorName(int err, const ConstantLabel* err_table) {
-  if (err == 0)
-    return "No error";
-
-  if (err_table != 0) {
-    if (const char* value = FindLabel(err, err_table))
-      return value;
-  }
-
-  char buffer[16];
-  snprintf(buffer, sizeof(buffer), "0x%08x", err);
-  return buffer;
-}
 
 /////////////////////////////////////////////////////////////////////////////
 // LogMessage
@@ -117,9 +89,8 @@
                        int line,
                        LoggingSeverity sev,
                        LogErrorContext err_ctx,
-                       int err,
-                       const char* module)
-    : severity_(sev), tag_(kLibjingle) {
+                       int err)
+    : severity_(sev) {
   if (timestamp_) {
     // Use SystemTimeMillis so that even if tests use fake clocks, the timestamp
     // in log messages represents the real system time.
@@ -150,12 +121,10 @@
 #ifdef WEBRTC_WIN
       case ERRCTX_HRESULT: {
         char msgbuf[256];
-        DWORD flags = FORMAT_MESSAGE_FROM_SYSTEM;
-        HMODULE hmod = GetModuleHandleA(module);
-        if (hmod)
-          flags |= FORMAT_MESSAGE_FROM_HMODULE;
+        DWORD flags = FORMAT_MESSAGE_FROM_SYSTEM |
+                      FORMAT_MESSAGE_IGNORE_INSERTS;
         if (DWORD len = FormatMessageA(
-                flags, hmod, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+                flags, nullptr, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                 msgbuf, sizeof(msgbuf) / sizeof(msgbuf[0]), nullptr)) {
           while ((len > 0) &&
               isspace(static_cast<unsigned char>(msgbuf[len-1]))) {
@@ -180,19 +149,20 @@
   }
 }
 
+#if defined(WEBRTC_ANDROID)
 LogMessage::LogMessage(const char* file,
                        int line,
                        LoggingSeverity sev,
-                       const std::string& tag)
+                       const char* tag)
     : LogMessage(file,
                  line,
                  sev,
                  ERRCTX_NONE,
-                 0 /* err */,
-                 nullptr /* module */) {
+                 0 /* err */) {
   tag_ = tag;
   print_stream_ << tag << ": ";
 }
+#endif
 
 LogMessage::~LogMessage() {
   if (!extra_.empty())
@@ -201,7 +171,11 @@
 
   const std::string& str = print_stream_.str();
   if (severity_ >= g_dbg_sev) {
+#if defined(WEBRTC_ANDROID)
     OutputToDebug(str, severity_, tag_);
+#else
+    OutputToDebug(str, severity_);
+#endif
   }
 
   CritScope cs(&g_log_crit);
@@ -322,19 +296,8 @@
     // from the command line, we'll see the output there.  Otherwise, create
     // our own console window.
     // Note: These methods fail if a console already exists, which is fine.
-    bool success = false;
-    typedef BOOL (WINAPI* PFN_AttachConsole)(DWORD);
-    if (HINSTANCE kernel32 = ::LoadLibrary(L"kernel32.dll")) {
-      // AttachConsole is defined on WinXP+.
-      if (PFN_AttachConsole attach_console = reinterpret_cast<PFN_AttachConsole>
-            (::GetProcAddress(kernel32, "AttachConsole"))) {
-        success = (FALSE != attach_console(ATTACH_PARENT_PROCESS));
-      }
-      ::FreeLibrary(kernel32);
-    }
-    if (!success) {
+    if (!AttachConsole(ATTACH_PARENT_PROCESS))
       ::AllocConsole();
-    }
   }
 #endif  // WEBRTC_WIN
 
@@ -350,9 +313,14 @@
   g_min_sev = min_sev;
 }
 
+#if defined(WEBRTC_ANDROID)
 void LogMessage::OutputToDebug(const std::string& str,
                                LoggingSeverity severity,
-                               const std::string& tag) {
+                               const char* tag) {
+#else
+void LogMessage::OutputToDebug(const std::string& str,
+                               LoggingSeverity severity) {
+#endif
   bool log_to_stderr = log_to_stderr_;
 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) && defined(NDEBUG)
   // On the Mac, all stderr output goes to the Console log and causes clutter.
@@ -373,7 +341,8 @@
   if (key != nullptr) {
     CFRelease(key);
   }
-#endif
+#endif  // defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) && defined(NDEBUG)
+
 #if defined(WEBRTC_WIN)
   // Always log to the debugger.
   // Perhaps stderr should be controlled by a preference, as on Mac?
@@ -388,6 +357,7 @@
     }
   }
 #endif  // WEBRTC_WIN
+
 #if defined(WEBRTC_ANDROID)
   // Android's logging facility uses severity to log messages but we
   // need to map libjingle's severity levels to Android ones first.
@@ -396,7 +366,7 @@
   int prio;
   switch (severity) {
     case LS_SENSITIVE:
-      __android_log_write(ANDROID_LOG_INFO, tag.c_str(), "SENSITIVE");
+      __android_log_write(ANDROID_LOG_INFO, tag, "SENSITIVE");
       if (log_to_stderr) {
         fprintf(stderr, "SENSITIVE");
         fflush(stderr);
@@ -423,15 +393,14 @@
   int idx = 0;
   const int max_lines = size / kMaxLogLineSize + 1;
   if (max_lines == 1) {
-    __android_log_print(prio, tag.c_str(), "%.*s", size, str.c_str());
+    __android_log_print(prio, tag, "%.*s", size, str.c_str());
   } else {
     while (size > 0) {
       const int len = std::min(size, kMaxLogLineSize);
       // Use the size of the string in the format (str may have \0 in the
       // middle).
-      __android_log_print(prio, tag.c_str(), "[%d/%d] %.*s",
-                          line + 1, max_lines,
-                          len, str.c_str() + idx);
+      __android_log_print(prio, tag, "[%d/%d] %.*s", line + 1, max_lines, len,
+                          str.c_str() + idx);
       idx += len;
       size -= len;
       ++line;
diff --git a/rtc_base/logging.h b/rtc_base/logging.h
index 0865379..d91db9a 100644
--- a/rtc_base/logging.h
+++ b/rtc_base/logging.h
@@ -26,9 +26,8 @@
 // RTC_LOG_F(sev) Like RTC_LOG(), but includes the name of the current function.
 // RTC_LOG_T(sev) Like RTC_LOG(), but includes the this pointer.
 // RTC_LOG_T_F(sev) Like RTC_LOG_F(), but includes the this pointer.
-// RTC_LOG_GLE(M)(sev [, mod]) attempt to add a string description of the
-//     HRESULT returned by GetLastError.  The "M" variant allows searching of a
-//     DLL's string table for the error description.
+// RTC_LOG_GLE(sev [, mod]) attempt to add a string description of the
+//     HRESULT returned by GetLastError.
 // RTC_LOG_ERRNO(sev) attempts to add a string description of an errno-derived
 //     error. errno and associated facilities exist on both Windows and POSIX,
 //     but on Windows they only apply to the C/C++ runtime.
@@ -68,29 +67,6 @@
 
 namespace rtc {
 
-///////////////////////////////////////////////////////////////////////////////
-// ConstantLabel can be used to easily generate string names from constant
-// values.  This can be useful for logging descriptive names of error messages.
-// Usage:
-//   const ConstantLabel LIBRARY_ERRORS[] = {
-//     KLABEL(SOME_ERROR),
-//     KLABEL(SOME_OTHER_ERROR),
-//     ...
-//     LASTLABEL
-//   }
-//
-//   int err = LibraryFunc();
-//   LOG(LS_ERROR) << "LibraryFunc returned: "
-//                 << ErrorName(err, LIBRARY_ERRORS);
-
-struct ConstantLabel { int value; const char * label; };
-#define KLABEL(x) { x, #x }
-#define TLABEL(x, y) { x, y }
-#define LASTLABEL { 0, 0 }
-
-const char* FindLabel(int value, const ConstantLabel entries[]);
-std::string ErrorName(int err, const ConstantLabel* err_table);
-
 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
 // Returns a UTF8 description from an OS X Status error.
 std::string DescriptionFromOSStatus(OSStatus err);
@@ -148,13 +124,11 @@
              int line,
              LoggingSeverity sev,
              LogErrorContext err_ctx = ERRCTX_NONE,
-             int err = 0,
-             const char* module = nullptr);
+             int err = 0);
 
-  LogMessage(const char* file,
-             int line,
-             LoggingSeverity sev,
-             const std::string& tag);
+#if defined(WEBRTC_ANDROID)
+  LogMessage(const char* file, int line, LoggingSeverity sev, const char* tag);
+#endif
 
   ~LogMessage();
 
@@ -213,9 +187,13 @@
   static void UpdateMinLogSeverity();
 
   // These write out the actual log messages.
+#if defined(WEBRTC_ANDROID)
   static void OutputToDebug(const std::string& msg,
                             LoggingSeverity severity,
-                            const std::string& tag);
+                            const char* tag);
+#else
+  static void OutputToDebug(const std::string& msg, LoggingSeverity severity);
+#endif
 
   // The ostream that buffers the formatted message before output
   std::ostringstream print_stream_;
@@ -223,8 +201,10 @@
   // The severity level of this message
   LoggingSeverity severity_;
 
+#if defined(WEBRTC_ANDROID)
   // The Android debug output tag.
-  std::string tag_;
+  const char* tag_ = "libjingle";
+#endif
 
   // String data generated in the constructor, that should be appended to
   // the message before output.
@@ -313,8 +293,6 @@
   RTC_LOG_E(sev, HRESULT, err)
 #define RTC_LOG_GLE(sev) \
   RTC_LOG_GLE_EX(sev, GetLastError())
-#define RTC_LOG_GLEM(sev, mod) \
-  RTC_LOG_E(sev, HRESULT, GetLastError(), mod)
 #define RTC_LOG_ERR_EX(sev, err) \
   RTC_LOG_GLE_EX(sev, err)
 #define RTC_LOG_ERR(sev) \
@@ -331,9 +309,11 @@
   RTC_LOG_ERRNO(sev)
 #endif  // WEBRTC_WIN
 
+#if defined(WEBRTC_ANDROID)
 #define RTC_LOG_TAG(sev, tag)        \
   RTC_LOG_SEVERITY_PRECONDITION(sev) \
   rtc::LogMessage(nullptr, 0, sev, tag).stream()
+#endif
 
 // The RTC_DLOG macros are equivalent to their RTC_LOG counterparts except that
 // they only generate code in debug builds.
diff --git a/rtc_base/socketadapters.cc b/rtc_base/socketadapters.cc
index 48e7898..814f23b 100644
--- a/rtc_base/socketadapters.cc
+++ b/rtc_base/socketadapters.cc
@@ -16,7 +16,6 @@
 #include <errno.h>
 
 #if defined(WEBRTC_WIN)
-#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <winsock2.h>
 #include <ws2tcpip.h>
diff --git a/rtc_base/win32securityerrors.cc b/rtc_base/win32securityerrors.cc
deleted file mode 100644
index 2f8530a..0000000
--- a/rtc_base/win32securityerrors.cc
+++ /dev/null
@@ -1,49 +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 "rtc_base/logging.h"
-#include "rtc_base/win32.h"
-
-namespace rtc {
-
-///////////////////////////////////////////////////////////////////////////////
-
-extern const ConstantLabel SECURITY_ERRORS[];
-
-const ConstantLabel SECURITY_ERRORS[] = {
-  KLABEL(SEC_I_COMPLETE_AND_CONTINUE),
-  KLABEL(SEC_I_COMPLETE_NEEDED),
-  KLABEL(SEC_I_CONTEXT_EXPIRED),
-  KLABEL(SEC_I_CONTINUE_NEEDED),
-  KLABEL(SEC_I_INCOMPLETE_CREDENTIALS),
-  KLABEL(SEC_I_RENEGOTIATE),
-  KLABEL(SEC_E_CERT_EXPIRED),
-  KLABEL(SEC_E_INCOMPLETE_MESSAGE),
-  KLABEL(SEC_E_INSUFFICIENT_MEMORY),
-  KLABEL(SEC_E_INTERNAL_ERROR),
-  KLABEL(SEC_E_INVALID_HANDLE),
-  KLABEL(SEC_E_INVALID_TOKEN),
-  KLABEL(SEC_E_LOGON_DENIED),
-  KLABEL(SEC_E_NO_AUTHENTICATING_AUTHORITY),
-  KLABEL(SEC_E_NO_CREDENTIALS),
-  KLABEL(SEC_E_NOT_OWNER),
-  KLABEL(SEC_E_OK),
-  KLABEL(SEC_E_SECPKG_NOT_FOUND),
-  KLABEL(SEC_E_TARGET_UNKNOWN),
-  KLABEL(SEC_E_UNKNOWN_CREDENTIALS),
-  KLABEL(SEC_E_UNSUPPORTED_FUNCTION),
-  KLABEL(SEC_E_UNTRUSTED_ROOT),
-  KLABEL(SEC_E_WRONG_PRINCIPAL),
-  LASTLABEL
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-}  // namespace rtc
diff --git a/sdk/android/src/jni/pc/logging.cc b/sdk/android/src/jni/pc/logging.cc
index 48d4000..4fb8215 100644
--- a/sdk/android/src/jni/pc/logging.cc
+++ b/sdk/android/src/jni/pc/logging.cc
@@ -51,7 +51,8 @@
                          jstring j_message) {
   std::string message = JavaToStdString(jni, JavaParamRef<jstring>(j_message));
   std::string tag = JavaToStdString(jni, JavaParamRef<jstring>(j_tag));
-  RTC_LOG_TAG(static_cast<rtc::LoggingSeverity>(j_severity), tag) << message;
+  RTC_LOG_TAG(static_cast<rtc::LoggingSeverity>(j_severity), tag.c_str())
+      << message;
 }
 
 }  // namespace jni