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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WebRtcLog.h"
#include "mozilla/Logging.h"
#include "prenv.h"
#include "webrtc/system_wrappers/interface/trace.h"
#include "nscore.h"
#ifdef MOZILLA_INTERNAL_API
#include "nsString.h"
#include "nsXULAppAPI.h"
#include "mozilla/Preferences.h"
#else
#include "nsStringAPI.h"
#endif
#include "nsIFile.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
using mozilla::LogLevel;
static int gWebRtcTraceLoggingOn = 0;
#if defined(ANDROID)
static const char *default_tmp_dir = "/dev/null";
static const char *default_log_name = "nspr";
#else // Assume a POSIX environment
NS_NAMED_LITERAL_CSTRING(default_log_name, "WebRTC.log");
#endif
static PRLogModuleInfo* GetWebRtcTraceLog()
{
static PRLogModuleInfo *sLog;
if (!sLog) {
sLog = PR_NewLogModule("webrtc_trace");
}
return sLog;
}
static PRLogModuleInfo* GetWebRtcAECLog()
{
static PRLogModuleInfo *sLog;
if (!sLog) {
sLog = PR_NewLogModule("AEC");
}
return sLog;
}
class WebRtcTraceCallback: public webrtc::TraceCallback
{
public:
void Print(webrtc::TraceLevel level, const char* message, int length)
{
PRLogModuleInfo *log = GetWebRtcTraceLog();
MOZ_LOG(log, LogLevel::Debug, ("%s", message));
}
};
static WebRtcTraceCallback gWebRtcCallback;
#ifdef MOZILLA_INTERNAL_API
void GetWebRtcLogPrefs(uint32_t *aTraceMask, nsACString* aLogFile, nsACString *aAECLogDir, bool *aMultiLog)
{
*aMultiLog = mozilla::Preferences::GetBool("media.webrtc.debug.multi_log");
*aTraceMask = mozilla::Preferences::GetUint("media.webrtc.debug.trace_mask");
mozilla::Preferences::GetCString("media.webrtc.debug.log_file", aLogFile);
mozilla::Preferences::GetCString("media.webrtc.debug.aec_log_dir", aAECLogDir);
webrtc::Trace::set_aec_debug_size(mozilla::Preferences::GetUint("media.webrtc.debug.aec_dump_max_size"));
}
#endif
void CheckOverrides(uint32_t *aTraceMask, nsACString *aLogFile, bool *aMultiLog)
{
if (!aTraceMask || !aLogFile || !aMultiLog) {
return;
}
// Override or fill in attributes from the environment if possible.
PRLogModuleInfo *log_info = GetWebRtcTraceLog();
/* When webrtc_trace:x is not part of the NSPR_LOG_MODULES var the structure returned from
the GetWebRTCLogInfo call will be non-null and show a level of 0. This cannot
be reliably used to turn off the trace and override a log level from about:config as
there is no way to differentiate between NSPR_LOG_MODULES=webrtc_trace:0 and the complete
absense of the webrtc_trace in the environment string at all.
*/
if (log_info && (log_info->level != 0)) {
*aTraceMask = log_info->level;
}
log_info = GetWebRtcAECLog();
if (log_info && (log_info->level != 0)) {
webrtc::Trace::set_aec_debug(true);
}
const char *file_name = PR_GetEnv("WEBRTC_TRACE_FILE");
if (file_name) {
aLogFile->Assign(file_name);
}
}
void ConfigWebRtcLog(uint32_t trace_mask, nsCString &aLogFile, nsCString &aAECLogDir, bool multi_log)
{
if (gWebRtcTraceLoggingOn) {
return;
}
#if defined(ANDROID)
// Special case: use callback to pipe to NSPR logging.
aLogFile.Assign(default_log_name);
#else
webrtc::Trace::set_level_filter(trace_mask);
if (trace_mask != 0) {
if (aLogFile.EqualsLiteral("nspr")) {
webrtc::Trace::SetTraceCallback(&gWebRtcCallback);
} else {
webrtc::Trace::SetTraceFile(aLogFile.get(), multi_log);
}
}
if (aLogFile.IsEmpty()) {
nsCOMPtr<nsIFile> tempDir;
nsresult rv = NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(tempDir));
if (NS_SUCCEEDED(rv)) {
tempDir->AppendNative(default_log_name);
tempDir->GetNativePath(aLogFile);
}
}
#endif
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
if (XRE_IsParentProcess()) {
// Capture the final choice for the trace setting.
mozilla::Preferences::SetCString("media.webrtc.debug.log_file", aLogFile);
}
#endif
return;
}
void StartWebRtcLog(uint32_t log_level)
{
if (gWebRtcTraceLoggingOn && log_level != 0) {
return;
}
if (log_level == 0) {
if (gWebRtcTraceLoggingOn) {
gWebRtcTraceLoggingOn = false;
webrtc::Trace::set_level_filter(webrtc::kTraceNone);
}
return;
}
uint32_t trace_mask = 0;
bool multi_log = false;
nsAutoCString log_file;
nsAutoCString aec_log_dir;
#ifdef MOZILLA_INTERNAL_API
GetWebRtcLogPrefs(&trace_mask, &log_file, &aec_log_dir, &multi_log);
#endif
CheckOverrides(&trace_mask, &log_file, &multi_log);
if (trace_mask == 0) {
trace_mask = log_level;
}
ConfigWebRtcLog(trace_mask, log_file, aec_log_dir, multi_log);
return;
}
void EnableWebRtcLog()
{
if (gWebRtcTraceLoggingOn) {
return;
}
uint32_t trace_mask = 0;
bool multi_log = false;
nsAutoCString log_file;
nsAutoCString aec_log_dir;
#ifdef MOZILLA_INTERNAL_API
GetWebRtcLogPrefs(&trace_mask, &log_file, &aec_log_dir, &multi_log);
#endif
CheckOverrides(&trace_mask, &log_file, &multi_log);
ConfigWebRtcLog(trace_mask, log_file, aec_log_dir, multi_log);
return;
}
void StopWebRtcLog()
{
// TODO(NG) strip/fix gWebRtcTraceLoggingOn which is never set to true
webrtc::Trace::set_level_filter(webrtc::kTraceNone);
webrtc::Trace::SetTraceCallback(nullptr);
webrtc::Trace::SetTraceFile(nullptr);
}
void ConfigAecLog(nsCString &aAECLogDir) {
if (webrtc::Trace::aec_debug()) {
return;
}
#if defined(ANDROID)
// For AEC, do not use a default value: force the user to specify a directory.
if (aAECLogDir.IsEmpty()) {
aAECLogDir.Assign(default_tmp_dir);
}
#else
if (aAECLogDir.IsEmpty()) {
nsCOMPtr<nsIFile> tempDir;
nsresult rv = NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(tempDir));
if (NS_SUCCEEDED(rv)) {
if (aAECLogDir.IsEmpty()) {
tempDir->GetNativePath(aAECLogDir);
}
}
}
#endif
webrtc::Trace::set_aec_debug_filename(aAECLogDir.get());
#if !defined(MOZILLA_EXTERNAL_LINKAGE)
if (XRE_IsParentProcess()) {
// Capture the final choice for the aec_log_dir setting.
mozilla::Preferences::SetCString("media.webrtc.debug.aec_log_dir", aAECLogDir);
}
#endif
}
void StartAecLog()
{
if (webrtc::Trace::aec_debug()) {
return;
}
uint32_t trace_mask = 0;
bool multi_log = false;
nsAutoCString log_file;
nsAutoCString aec_log_dir;
#ifdef MOZILLA_INTERNAL_API
GetWebRtcLogPrefs(&trace_mask, &log_file, &aec_log_dir, &multi_log);
#endif
CheckOverrides(&trace_mask, &log_file, &multi_log);
ConfigAecLog(aec_log_dir);
webrtc::Trace::set_aec_debug(true);
}
void StopAecLog()
{
webrtc::Trace::set_aec_debug(false);
}
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