Add third_party/webrtc_overrides.

third_party/webrtc_overrides/webrtc/base/logging.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// NOTE:
+// Since this file includes Chromium headers, it must not include
+// third_party/webrtc/base/logging.h since it defines some of the same macros as
+// Chromium does and we'll run into conflicts.
+
+#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
+#include <CoreServices/CoreServices.h>
+#endif  // OS_MACOSX
+
+#include <algorithm>
+#include <iomanip>
+
+#include "base/atomicops.h"
+#include "base/logging.h"
+#include "base/strings/string_util.h"
+#include "base/threading/platform_thread.h"
+#include "third_party/webrtc/base/ipaddress.h"
+#include "third_party/webrtc/base/stream.h"
+#include "third_party/webrtc/base/stringencode.h"
+#include "third_party/webrtc/base/stringutils.h"
+#include "third_party/webrtc/base/timeutils.h"
+#include "third_party/webrtc_overrides/webrtc/base/diagnostic_logging.h"
+
+// From this file we can't use VLOG since it expands into usage of the __FILE__
+// macro (for correct filtering). The actual logging call from DIAGNOSTIC_LOG in
+// ~DiagnosticLogMessage. Note that the second parameter to the LAZY_STREAM
+// macro is true since the filter check has already been done for
+// DIAGNOSTIC_LOG.
+#define LOG_LAZY_STREAM_DIRECT(file_name, line_number, sev)              \
+  LAZY_STREAM(logging::LogMessage(file_name, line_number, sev).stream(), \
+                  true)
+
+namespace rtc {
+
+void (*g_logging_delegate_function)(const std::string&) = NULL;
+void (*g_extra_logging_init_function)(
+    void (*logging_delegate_function)(const std::string&)) = NULL;
+#ifndef NDEBUG
+static_assert(sizeof(base::subtle::Atomic32) == sizeof(base::PlatformThreadId),
+              "Atomic32 not same size as PlatformThreadId");
+base::subtle::Atomic32 g_init_logging_delegate_thread_id = 0;
+#endif
+
+/////////////////////////////////////////////////////////////////////////////
+// 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];
+  base::snprintf(buffer, sizeof(buffer), "0x%08x", err);
+  return buffer;
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// Log helper functions
+/////////////////////////////////////////////////////////////////////////////
+
+inline int WebRtcSevToChromeSev(LoggingSeverity sev) {
+  switch (sev) {
+    case LS_ERROR:
+      return ::logging::LOG_ERROR;
+    case LS_WARNING:
+      return ::logging::LOG_WARNING;
+    case LS_INFO:
+      return ::logging::LOG_INFO;
+    case LS_VERBOSE:
+    case LS_SENSITIVE:
+      return ::logging::LOG_VERBOSE;
+    default:
+      NOTREACHED();
+      return ::logging::LOG_FATAL;
+  }
+}
+
+inline int WebRtcVerbosityLevel(LoggingSeverity sev) {
+  switch (sev) {
+    case LS_ERROR:
+      return -2;
+    case LS_WARNING:
+      return -1;
+    case LS_INFO:  // We treat 'info' and 'verbose' as the same verbosity level.
+    case LS_VERBOSE:
+      return 1;
+    case LS_SENSITIVE:
+      return 2;
+    default:
+      NOTREACHED();
+      return 0;
+  }
+}
+
+// Generates extra information for LOG_E.
+static std::string GenerateExtra(LogErrorContext err_ctx,
+                                 int err,
+                                 const char* module) {
+  if (err_ctx != ERRCTX_NONE) {
+    std::ostringstream tmp;
+    tmp << ": ";
+    tmp << "[0x" << std::setfill('0') << std::hex << std::setw(8) << err << "]";
+    switch (err_ctx) {
+      case ERRCTX_ERRNO:
+        tmp << " " << strerror(err);
+        break;
+#if defined(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;
+        if (DWORD len = FormatMessageA(
+            flags, hmod, err,
+            MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+            msgbuf, sizeof(msgbuf) / sizeof(msgbuf[0]), NULL)) {
+          while ((len > 0) &&
+              isspace(static_cast<unsigned char>(msgbuf[len-1]))) {
+            msgbuf[--len] = 0;
+          }
+          tmp << " " << msgbuf;
+        }
+        break;
+      }
+#endif  // OS_WIN
+#if defined(WEBRTC_IOS)
+      case ERRCTX_OSSTATUS:
+        tmp << " " << "Unknown LibJingle error: " << err;
+        break;
+#elif defined(WEBRTC_MAC)
+      case ERRCTX_OSSTATUS: {
+        tmp << " " << nonnull(GetMacOSStatusErrorString(err), "Unknown error");
+        if (const char* desc = GetMacOSStatusCommentString(err)) {
+          tmp << ": " << desc;
+        }
+        break;
+      }
+#endif  // OS_MACOSX
+      default:
+        break;
+    }
+    return tmp.str();
+  }
+  return "";
+}
+
+DiagnosticLogMessage::DiagnosticLogMessage(const char* file,
+                                           int line,
+                                           LoggingSeverity severity,
+                                           LogErrorContext err_ctx,
+                                           int err)
+    : file_name_(file),
+      line_(line),
+      severity_(severity),
+      log_to_chrome_(CheckVlogIsOnHelper(severity, file, strlen(file) + 1)) {
+  extra_ = GenerateExtra(err_ctx, err, NULL);
+}
+
+DiagnosticLogMessage::DiagnosticLogMessage(const char* file,
+                                           int line,
+                                           LoggingSeverity severity,
+                                           LogErrorContext err_ctx,
+                                           int err,
+                                           const char* module)
+    : file_name_(file),
+      line_(line),
+      severity_(severity),
+      log_to_chrome_(CheckVlogIsOnHelper(severity, file, strlen(file) + 1)) {
+  extra_ = GenerateExtra(err_ctx, err, module);
+}
+
+DiagnosticLogMessage::~DiagnosticLogMessage() {
+  const bool call_delegate =
+      g_logging_delegate_function && severity_ <= LS_INFO;
+
+  if (call_delegate || log_to_chrome_) {
+    print_stream_ << extra_;
+    const std::string& str = print_stream_.str();
+    if (log_to_chrome_) {
+      LOG_LAZY_STREAM_DIRECT(file_name_, line_,
+          rtc::WebRtcSevToChromeSev(severity_)) << str;
+    }
+
+    if (g_logging_delegate_function && severity_ <= LS_INFO) {
+      g_logging_delegate_function(str);
+    }
+  }
+}
+
+// static
+void LogMessage::LogToDebug(int min_sev) {
+  logging::SetMinLogLevel(min_sev);
+}
+
+// Note: this function is a copy from the overriden libjingle implementation.
+void LogMultiline(LoggingSeverity level, const char* label, bool input,
+                  const void* data, size_t len, bool hex_mode,
+                  LogMultilineState* state) {
+  // TODO(grunell): This will not do the expected verbosity level checking. We
+  // need a macro for the multiline logging.
+  // https://code.google.com/p/webrtc/issues/detail?id=5011
+  if (!LOG_CHECK_LEVEL_V(level))
+    return;
+
+  const char * direction = (input ? " << " : " >> ");
+
+  // NULL data means to flush our count of unprintable characters.
+  if (!data) {
+    if (state && state->unprintable_count_[input]) {
+      LOG_V(level) << label << direction << "## "
+                   << state->unprintable_count_[input]
+                   << " consecutive unprintable ##";
+      state->unprintable_count_[input] = 0;
+    }
+    return;
+  }
+
+  // The ctype classification functions want unsigned chars.
+  const unsigned char* udata = static_cast<const unsigned char*>(data);
+
+  if (hex_mode) {
+    const size_t LINE_SIZE = 24;
+    char hex_line[LINE_SIZE * 9 / 4 + 2], asc_line[LINE_SIZE + 1];
+    while (len > 0) {
+      memset(asc_line, ' ', sizeof(asc_line));
+      memset(hex_line, ' ', sizeof(hex_line));
+      size_t line_len = std::min(len, LINE_SIZE);
+      for (size_t i = 0; i < line_len; ++i) {
+        unsigned char ch = udata[i];
+        asc_line[i] = isprint(ch) ? ch : '.';
+        hex_line[i*2 + i/4] = hex_encode(ch >> 4);
+        hex_line[i*2 + i/4 + 1] = hex_encode(ch & 0xf);
+      }
+      asc_line[sizeof(asc_line)-1] = 0;
+      hex_line[sizeof(hex_line)-1] = 0;
+      LOG_V(level) << label << direction
+                   << asc_line << " " << hex_line << " ";
+      udata += line_len;
+      len -= line_len;
+    }
+    return;
+  }
+
+  size_t consecutive_unprintable = state ? state->unprintable_count_[input] : 0;
+
+  const unsigned char* end = udata + len;
+  while (udata < end) {
+    const unsigned char* line = udata;
+    const unsigned char* end_of_line = strchrn<unsigned char>(udata,
+                                                              end - udata,
+                                                              '\n');
+    if (!end_of_line) {
+      udata = end_of_line = end;
+    } else {
+      udata = end_of_line + 1;
+    }
+
+    bool is_printable = true;
+
+    // If we are in unprintable mode, we need to see a line of at least
+    // kMinPrintableLine characters before we'll switch back.
+    const ptrdiff_t kMinPrintableLine = 4;
+    if (consecutive_unprintable && ((end_of_line - line) < kMinPrintableLine)) {
+      is_printable = false;
+    } else {
+      // Determine if the line contains only whitespace and printable
+      // characters.
+      bool is_entirely_whitespace = true;
+      for (const unsigned char* pos = line; pos < end_of_line; ++pos) {
+        if (isspace(*pos))
+          continue;
+        is_entirely_whitespace = false;
+        if (!isprint(*pos)) {
+          is_printable = false;
+          break;
+        }
+      }
+      // Treat an empty line following unprintable data as unprintable.
+      if (consecutive_unprintable && is_entirely_whitespace) {
+        is_printable = false;
+      }
+    }
+    if (!is_printable) {
+      consecutive_unprintable += (udata - line);
+      continue;
+    }
+    // Print out the current line, but prefix with a count of prior unprintable
+    // characters.
+    if (consecutive_unprintable) {
+      LOG_V(level) << label << direction << "## " << consecutive_unprintable
+                  << " consecutive unprintable ##";
+      consecutive_unprintable = 0;
+    }
+    // Strip off trailing whitespace.
+    while ((end_of_line > line) && isspace(*(end_of_line-1))) {
+      --end_of_line;
+    }
+    // Filter out any private data
+    std::string substr(reinterpret_cast<const char*>(line), end_of_line - line);
+    std::string::size_type pos_private = substr.find("Email");
+    if (pos_private == std::string::npos) {
+      pos_private = substr.find("Passwd");
+    }
+    if (pos_private == std::string::npos) {
+      LOG_V(level) << label << direction << substr;
+    } else {
+      LOG_V(level) << label << direction << "## omitted for privacy ##";
+    }
+  }
+
+  if (state) {
+    state->unprintable_count_[input] = consecutive_unprintable;
+  }
+}
+
+void InitDiagnosticLoggingDelegateFunction(
+    void (*delegate)(const std::string&)) {
+#ifndef NDEBUG
+  // Ensure that this function is always called from the same thread.
+  base::subtle::NoBarrier_CompareAndSwap(&g_init_logging_delegate_thread_id, 0,
+      static_cast<base::subtle::Atomic32>(base::PlatformThread::CurrentId()));
+  DCHECK_EQ(
+      g_init_logging_delegate_thread_id,
+      static_cast<base::subtle::Atomic32>(base::PlatformThread::CurrentId()));
+#endif
+  CHECK(delegate);
+  // This function may be called with the same argument several times if the
+  // page is reloaded or there are several PeerConnections on one page with
+  // logging enabled. This is OK, we simply don't have to do anything.
+  if (delegate == g_logging_delegate_function)
+    return;
+  CHECK(!g_logging_delegate_function);
+#ifdef NDEBUG
+  IPAddress::set_strip_sensitive(true);
+#endif
+  g_logging_delegate_function = delegate;
+
+  if (g_extra_logging_init_function)
+    g_extra_logging_init_function(delegate);
+}
+
+void SetExtraLoggingInit(
+    void (*function)(void (*delegate)(const std::string&))) {
+  CHECK(function);
+  CHECK(!g_extra_logging_init_function);
+  g_extra_logging_init_function = function;
+}
+
+bool CheckVlogIsOnHelper(
+    rtc::LoggingSeverity severity, const char* file, size_t N) {
+  return rtc::WebRtcVerbosityLevel(severity) <=
+         ::logging::GetVlogLevelHelper(file, N);
+}
+
+}  // namespace rtc