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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "third_party/libjingle/overrides/talk/base/logging.h" | |
| 6 | |
| 7 #if defined(OS_MACOSX) && !defined(OS_IOS) | |
| 8 #include <CoreServices/CoreServices.h> | |
| 9 #endif // OS_MACOSX | |
| 10 | |
| 11 #include <iomanip> | |
| 12 | |
| 13 #include "base/atomicops.h" | |
| 14 #include "base/strings/string_util.h" | |
| 15 #include "base/threading/platform_thread.h" | |
| 16 #include "third_party/libjingle/source/talk/base/ipaddress.h" | |
| 17 #include "third_party/libjingle/source/talk/base/stream.h" | |
| 18 #include "third_party/libjingle/source/talk/base/stringencode.h" | |
| 19 #include "third_party/libjingle/source/talk/base/stringutils.h" | |
| 20 #include "third_party/libjingle/source/talk/base/timeutils.h" | |
| 21 | |
| 22 // From this file we can't use VLOG since it expands into usage of the __FILE__ | |
| 23 // macro (for correct filtering). The actual logging call from DIAGNOSTIC_LOG in | |
| 24 // ~DiagnosticLogMessage. Note that the second parameter to the LAZY_STREAM | |
| 25 // macro is true since the filter check has already been done for | |
| 26 // DIAGNOSTIC_LOG. | |
| 27 #define LOG_LAZY_STREAM_DIRECT(file_name, line_number, sev) \ | |
| 28 LAZY_STREAM(logging::LogMessage(file_name, line_number, \ | |
| 29 -sev).stream(), true) | |
| 30 | |
| 31 namespace talk_base { | |
| 32 | |
| 33 void (*g_logging_delegate_function)(const std::string&) = NULL; | |
| 34 void (*g_extra_logging_init_function)( | |
| 35 void (*logging_delegate_function)(const std::string&)) = NULL; | |
| 36 #ifndef NDEBUG | |
| 37 COMPILE_ASSERT(sizeof(base::subtle::Atomic32) == sizeof(base::PlatformThreadId), | |
| 38 atomic32_not_same_size_as_platformthreadid); | |
| 39 base::subtle::Atomic32 g_init_logging_delegate_thread_id = 0; | |
| 40 #endif | |
| 41 | |
| 42 ///////////////////////////////////////////////////////////////////////////// | |
| 43 // Constant Labels | |
| 44 ///////////////////////////////////////////////////////////////////////////// | |
| 45 | |
| 46 const char* FindLabel(int value, const ConstantLabel entries[]) { | |
| 47 for (int i = 0; entries[i].label; ++i) { | |
| 48 if (value == entries[i].value) return entries[i].label; | |
| 49 } | |
| 50 return 0; | |
| 51 } | |
| 52 | |
| 53 std::string ErrorName(int err, const ConstantLabel* err_table) { | |
| 54 if (err == 0) | |
| 55 return "No error"; | |
| 56 | |
| 57 if (err_table != 0) { | |
| 58 if (const char * value = FindLabel(err, err_table)) | |
| 59 return value; | |
| 60 } | |
| 61 | |
| 62 char buffer[16]; | |
| 63 base::snprintf(buffer, sizeof(buffer), "0x%08x", err); | |
| 64 return buffer; | |
| 65 } | |
| 66 | |
| 67 ///////////////////////////////////////////////////////////////////////////// | |
| 68 // Log helper functions | |
| 69 ///////////////////////////////////////////////////////////////////////////// | |
| 70 | |
| 71 // Generates extra information for LOG_E. | |
| 72 static std::string GenerateExtra(LogErrorContext err_ctx, | |
| 73 int err, | |
| 74 const char* module) { | |
| 75 if (err_ctx != ERRCTX_NONE) { | |
| 76 std::ostringstream tmp; | |
| 77 tmp << ": "; | |
| 78 tmp << "[0x" << std::setfill('0') << std::hex << std::setw(8) << err << "]"; | |
| 79 switch (err_ctx) { | |
| 80 case ERRCTX_ERRNO: | |
| 81 tmp << " " << strerror(err); | |
| 82 break; | |
| 83 #if defined(OS_WIN) | |
| 84 case ERRCTX_HRESULT: { | |
| 85 char msgbuf[256]; | |
| 86 DWORD flags = FORMAT_MESSAGE_FROM_SYSTEM; | |
| 87 HMODULE hmod = GetModuleHandleA(module); | |
| 88 if (hmod) | |
| 89 flags |= FORMAT_MESSAGE_FROM_HMODULE; | |
| 90 if (DWORD len = FormatMessageA( | |
| 91 flags, hmod, err, | |
| 92 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
| 93 msgbuf, sizeof(msgbuf) / sizeof(msgbuf[0]), NULL)) { | |
| 94 while ((len > 0) && | |
| 95 isspace(static_cast<unsigned char>(msgbuf[len-1]))) { | |
| 96 msgbuf[--len] = 0; | |
| 97 } | |
| 98 tmp << " " << msgbuf; | |
| 99 } | |
| 100 break; | |
| 101 } | |
| 102 #endif // OS_WIN | |
| 103 #if defined(OS_IOS) | |
| 104 case ERRCTX_OSSTATUS: | |
| 105 tmp << " " << "Unknown LibJingle error: " << err; | |
| 106 break; | |
| 107 #elif defined(OS_MACOSX) | |
| 108 case ERRCTX_OSSTATUS: { | |
| 109 tmp << " " << nonnull(GetMacOSStatusErrorString(err), "Unknown error"); | |
| 110 if (const char* desc = GetMacOSStatusCommentString(err)) { | |
| 111 tmp << ": " << desc; | |
| 112 } | |
| 113 break; | |
| 114 } | |
| 115 #endif // OS_MACOSX | |
| 116 default: | |
| 117 break; | |
| 118 } | |
| 119 return tmp.str(); | |
| 120 } | |
| 121 return ""; | |
| 122 } | |
| 123 | |
| 124 DiagnosticLogMessage::DiagnosticLogMessage(const char* file, | |
| 125 int line, | |
| 126 LoggingSeverity severity, | |
| 127 bool log_to_chrome, | |
| 128 LogErrorContext err_ctx, | |
| 129 int err) | |
| 130 : file_name_(file), | |
| 131 line_(line), | |
| 132 severity_(severity), | |
| 133 log_to_chrome_(log_to_chrome) { | |
| 134 extra_ = GenerateExtra(err_ctx, err, NULL); | |
| 135 } | |
| 136 | |
| 137 DiagnosticLogMessage::DiagnosticLogMessage(const char* file, | |
| 138 int line, | |
| 139 LoggingSeverity severity, | |
| 140 bool log_to_chrome, | |
| 141 LogErrorContext err_ctx, | |
| 142 int err, | |
| 143 const char* module) | |
| 144 : file_name_(file), | |
| 145 line_(line), | |
| 146 severity_(severity), | |
| 147 log_to_chrome_(log_to_chrome) { | |
| 148 extra_ = GenerateExtra(err_ctx, err, module); | |
| 149 } | |
| 150 | |
| 151 DiagnosticLogMessage::~DiagnosticLogMessage() { | |
| 152 print_stream_ << extra_; | |
| 153 const std::string& str = print_stream_.str(); | |
| 154 if (log_to_chrome_) | |
| 155 LOG_LAZY_STREAM_DIRECT(file_name_, line_, severity_) << str; | |
| 156 if (g_logging_delegate_function && severity_ <= LS_INFO) { | |
| 157 g_logging_delegate_function(str); | |
| 158 } | |
| 159 } | |
| 160 | |
| 161 // Note: this function is a copy from the overriden libjingle implementation. | |
| 162 void LogMultiline(LoggingSeverity level, const char* label, bool input, | |
| 163 const void* data, size_t len, bool hex_mode, | |
| 164 LogMultilineState* state) { | |
| 165 if (!LOG_CHECK_LEVEL_V(level)) | |
| 166 return; | |
| 167 | |
| 168 const char * direction = (input ? " << " : " >> "); | |
| 169 | |
| 170 // NULL data means to flush our count of unprintable characters. | |
| 171 if (!data) { | |
| 172 if (state && state->unprintable_count_[input]) { | |
| 173 LOG_V(level) << label << direction << "## " | |
| 174 << state->unprintable_count_[input] | |
| 175 << " consecutive unprintable ##"; | |
| 176 state->unprintable_count_[input] = 0; | |
| 177 } | |
| 178 return; | |
| 179 } | |
| 180 | |
| 181 // The ctype classification functions want unsigned chars. | |
| 182 const unsigned char* udata = static_cast<const unsigned char*>(data); | |
| 183 | |
| 184 if (hex_mode) { | |
| 185 const size_t LINE_SIZE = 24; | |
| 186 char hex_line[LINE_SIZE * 9 / 4 + 2], asc_line[LINE_SIZE + 1]; | |
| 187 while (len > 0) { | |
| 188 memset(asc_line, ' ', sizeof(asc_line)); | |
| 189 memset(hex_line, ' ', sizeof(hex_line)); | |
| 190 size_t line_len = _min(len, LINE_SIZE); | |
| 191 for (size_t i = 0; i < line_len; ++i) { | |
| 192 unsigned char ch = udata[i]; | |
| 193 asc_line[i] = isprint(ch) ? ch : '.'; | |
| 194 hex_line[i*2 + i/4] = hex_encode(ch >> 4); | |
| 195 hex_line[i*2 + i/4 + 1] = hex_encode(ch & 0xf); | |
| 196 } | |
| 197 asc_line[sizeof(asc_line)-1] = 0; | |
| 198 hex_line[sizeof(hex_line)-1] = 0; | |
| 199 LOG_V(level) << label << direction | |
| 200 << asc_line << " " << hex_line << " "; | |
| 201 udata += line_len; | |
| 202 len -= line_len; | |
| 203 } | |
| 204 return; | |
| 205 } | |
| 206 | |
| 207 size_t consecutive_unprintable = state ? state->unprintable_count_[input] : 0; | |
| 208 | |
| 209 const unsigned char* end = udata + len; | |
| 210 while (udata < end) { | |
| 211 const unsigned char* line = udata; | |
| 212 const unsigned char* end_of_line = strchrn<unsigned char>(udata, | |
| 213 end - udata, | |
| 214 '\n'); | |
| 215 if (!end_of_line) { | |
| 216 udata = end_of_line = end; | |
| 217 } else { | |
| 218 udata = end_of_line + 1; | |
| 219 } | |
| 220 | |
| 221 bool is_printable = true; | |
| 222 | |
| 223 // If we are in unprintable mode, we need to see a line of at least | |
| 224 // kMinPrintableLine characters before we'll switch back. | |
| 225 const ptrdiff_t kMinPrintableLine = 4; | |
| 226 if (consecutive_unprintable && ((end_of_line - line) < kMinPrintableLine)) { | |
| 227 is_printable = false; | |
| 228 } else { | |
| 229 // Determine if the line contains only whitespace and printable | |
| 230 // characters. | |
| 231 bool is_entirely_whitespace = true; | |
| 232 for (const unsigned char* pos = line; pos < end_of_line; ++pos) { | |
| 233 if (isspace(*pos)) | |
| 234 continue; | |
| 235 is_entirely_whitespace = false; | |
| 236 if (!isprint(*pos)) { | |
| 237 is_printable = false; | |
| 238 break; | |
| 239 } | |
| 240 } | |
| 241 // Treat an empty line following unprintable data as unprintable. | |
| 242 if (consecutive_unprintable && is_entirely_whitespace) { | |
| 243 is_printable = false; | |
| 244 } | |
| 245 } | |
| 246 if (!is_printable) { | |
| 247 consecutive_unprintable += (udata - line); | |
| 248 continue; | |
| 249 } | |
| 250 // Print out the current line, but prefix with a count of prior unprintable | |
| 251 // characters. | |
| 252 if (consecutive_unprintable) { | |
| 253 LOG_V(level) << label << direction << "## " << consecutive_unprintable | |
| 254 << " consecutive unprintable ##"; | |
| 255 consecutive_unprintable = 0; | |
| 256 } | |
| 257 // Strip off trailing whitespace. | |
| 258 while ((end_of_line > line) && isspace(*(end_of_line-1))) { | |
| 259 --end_of_line; | |
| 260 } | |
| 261 // Filter out any private data | |
| 262 std::string substr(reinterpret_cast<const char*>(line), end_of_line - line); | |
| 263 std::string::size_type pos_private = substr.find("Email"); | |
| 264 if (pos_private == std::string::npos) { | |
| 265 pos_private = substr.find("Passwd"); | |
| 266 } | |
| 267 if (pos_private == std::string::npos) { | |
| 268 LOG_V(level) << label << direction << substr; | |
| 269 } else { | |
| 270 LOG_V(level) << label << direction << "## omitted for privacy ##"; | |
| 271 } | |
| 272 } | |
| 273 | |
| 274 if (state) { | |
| 275 state->unprintable_count_[input] = consecutive_unprintable; | |
| 276 } | |
| 277 } | |
| 278 | |
| 279 void InitDiagnosticLoggingDelegateFunction( | |
| 280 void (*delegate)(const std::string&)) { | |
| 281 #ifndef NDEBUG | |
| 282 // Ensure that this function is always called from the same thread. | |
| 283 base::subtle::NoBarrier_CompareAndSwap(&g_init_logging_delegate_thread_id, 0, | |
| 284 static_cast<base::subtle::Atomic32>(base::PlatformThread::CurrentId())); | |
| 285 DCHECK_EQ(g_init_logging_delegate_thread_id, | |
| 286 base::PlatformThread::CurrentId()); | |
| 287 #endif | |
| 288 CHECK(delegate); | |
| 289 // This function may be called with the same argument several times if the | |
| 290 // page is reloaded or there are several PeerConnections on one page with | |
| 291 // logging enabled. This is OK, we simply don't have to do anything. | |
| 292 if (delegate == g_logging_delegate_function) | |
| 293 return; | |
| 294 CHECK(!g_logging_delegate_function); | |
| 295 #ifdef NDEBUG | |
| 296 IPAddress::set_strip_sensitive(true); | |
| 297 #endif | |
| 298 g_logging_delegate_function = delegate; | |
| 299 | |
| 300 if (g_extra_logging_init_function) | |
| 301 g_extra_logging_init_function(delegate); | |
| 302 } | |
| 303 | |
| 304 void SetExtraLoggingInit( | |
| 305 void (*function)(void (*delegate)(const std::string&))) { | |
| 306 CHECK(function); | |
| 307 CHECK(!g_extra_logging_init_function); | |
| 308 g_extra_logging_init_function = function; | |
| 309 } | |
| 310 | |
| 311 } // namespace talk_base | |
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