/// <summary>
/// Reads the next <see cref="LogEntry"/> from the stream.
/// </summary>
/// <returns>
/// A new <see cref="LogEntry"/> object.
/// </returns>
public async Task <LogEntry> ReadEntry(CancellationToken cancellationToken)
{
LogEntry value = new LogEntry();
// Read the log data in binary format. This format is defined at
// https://android.googlesource.com/platform/system/core/+/master/include/log/logger.h
var payloadLengthValue = await this.ReadUInt16Async(cancellationToken).ConfigureAwait(false);
var headerSizeValue = payloadLengthValue == null ? null : await this.ReadUInt16Async(cancellationToken).ConfigureAwait(false);
var pidValue = headerSizeValue == null ? null : await this.ReadInt32Async(cancellationToken).ConfigureAwait(false);
var tidValue = pidValue == null ? null : await this.ReadInt32Async(cancellationToken).ConfigureAwait(false);
var secValue = tidValue == null ? null : await this.ReadInt32Async(cancellationToken).ConfigureAwait(false);
var nsecValue = secValue == null ? null : await this.ReadInt32Async(cancellationToken).ConfigureAwait(false);
if (nsecValue == null)
{
return(null);
}
var payloadLength = payloadLengthValue.Value;
var headerSize = headerSizeValue.Value;
var pid = pidValue.Value;
var tid = tidValue.Value;
var sec = secValue.Value;
var nsec = nsecValue.Value;
// If the headerSize is not 0, we have either a logger_entry_v3 or logger_entry_v2 object.
// For both objects, the size should be 0x18
uint id = 0;
if (headerSize != 0)
{
if (headerSize == 0x18)
{
var idValue = await this.ReadUInt32Async(cancellationToken).ConfigureAwait(false);
if (idValue == null)
{
return(null);
}
id = idValue.Value;
}
else
{
throw new Exception();
}
}
byte[] data = await this.ReadBytesSafeAsync(payloadLength, cancellationToken).ConfigureAwait(false);
if (data == null)
{
return(null);
}
DateTime timestamp = DateTimeHelper.Epoch.AddSeconds(sec);
timestamp = timestamp.AddMilliseconds(nsec / 1000000d);
switch ((LogId)id)
{
case LogId.Crash:
case LogId.Kernel:
case LogId.Main:
case LogId.Radio:
case LogId.System:
{
// format: <priority:1><tag:N>\0<message:N>\0
var priority = data[0];
// Find the first \0 byte in the array. This is the seperator
// between the tag and the actual message
int tagEnd = 1;
while (data[tagEnd] != '\0' && tagEnd < data.Length)
{
tagEnd++;
}
// Message should be null termintated, so remove the last entry, too (-2 instead of -1)
string tag = Encoding.ASCII.GetString(data, 1, tagEnd - 1);
string message = Encoding.ASCII.GetString(data, tagEnd + 1, data.Length - tagEnd - 2);
return(new AndroidLogEntry()
{
Data = data,
ProcessId = pid,
ThreadId = tid,
TimeStamp = timestamp,
Id = id,
Priority = (Priority)priority,
Message = message,
Tag = tag
});
}
case LogId.Events:
{
// https://android.googlesource.com/platform/system/core.git/+/master/liblog/logprint.c#547
var entry = new EventLogEntry()
{
Data = data,
ProcessId = pid,
ThreadId = tid,
TimeStamp = timestamp,
Id = id
};
// Use a stream on the data buffer. This will make sure that,
// if anything goes wrong parsing the data, we never go past
// the message boundary itself.
using (MemoryStream dataStream = new MemoryStream(data))
using (BinaryReader reader = new BinaryReader(dataStream))
{
var priority = reader.ReadInt32();
while (dataStream.Position < dataStream.Length)
{
this.ReadLogEntry(reader, entry.Values);
}
}
return(entry);
}
default:
return(new LogEntry()
{
Data = data,
ProcessId = pid,
ThreadId = tid,
TimeStamp = timestamp,
Id = id
});
}
}
/// <summary>
/// Reads the next <see cref="LogEntry"/> from the stream.
/// </summary>
/// <returns>
/// A new <see cref="LogEntry"/> object.
/// </returns>
public async Task <LogEntry> ReadEntry(CancellationToken cancellationToken)
{
LogEntry value = new LogEntry();
// Read the log data in binary format. This format is defined at
// https://android.googlesource.com/platform/system/core/+/master/include/log/logger.h
// https://android.googlesource.com/platform/system/core/+/67d7eaf/include/log/logger.h
var payloadLengthValue = await this.ReadUInt16Async(cancellationToken).ConfigureAwait(false);
var headerSizeValue = payloadLengthValue == null ? null : await this.ReadUInt16Async(cancellationToken).ConfigureAwait(false);
var pidValue = headerSizeValue == null ? null : await this.ReadInt32Async(cancellationToken).ConfigureAwait(false);
var tidValue = pidValue == null ? null : await this.ReadInt32Async(cancellationToken).ConfigureAwait(false);
var secValue = tidValue == null ? null : await this.ReadInt32Async(cancellationToken).ConfigureAwait(false);
var nsecValue = secValue == null ? null : await this.ReadInt32Async(cancellationToken).ConfigureAwait(false);
if (nsecValue == null)
{
return(null);
}
var payloadLength = payloadLengthValue.Value;
var headerSize = headerSizeValue.Value;
var pid = pidValue.Value;
var tid = tidValue.Value;
var sec = secValue.Value;
var nsec = nsecValue.Value;
// If the headerSize is not 0, we have on of the logger_entry_v* objects.
// In all cases, it appears that they always start with a two uint16's giving the
// header size and payload length.
// For both objects, the size should be 0x18
uint id = 0;
uint uid = 0;
if (headerSize != 0)
{
if (headerSize >= 0x18)
{
var idValue = await this.ReadUInt32Async(cancellationToken).ConfigureAwait(false);
if (idValue == null)
{
return(null);
}
id = idValue.Value;
}
if (headerSize >= 0x1c)
{
var uidValue = await this.ReadUInt32Async(cancellationToken).ConfigureAwait(false);
if (uidValue == null)
{
return(null);
}
uid = uidValue.Value;
}
if (headerSize >= 0x20)
{
// Not sure what this is.
await this.ReadUInt32Async(cancellationToken).ConfigureAwait(false);
}
if (headerSize > 0x20)
{
throw new AdbException($"An error occurred while reading data from the ADB stream. Although the header size was expected to be 0x18, a header size of 0x{headerSize:X} was sent by the device");
}
}
byte[] data = await this.ReadBytesSafeAsync(payloadLength, cancellationToken).ConfigureAwait(false);
if (data == null)
{
return(null);
}
var timestamp = DateTimeOffset.FromUnixTimeSeconds(sec);
switch ((LogId)id)
{
case LogId.Crash:
case LogId.Kernel:
case LogId.Main:
case LogId.Radio:
case LogId.System:
{
// format: <priority:1><tag:N>\0<message:N>\0
var priority = data[0];
// Find the first \0 byte in the array. This is the seperator
// between the tag and the actual message
int tagEnd = 1;
while (data[tagEnd] != '\0' && tagEnd < data.Length)
{
tagEnd++;
}
// Message should be null termintated, so remove the last entry, too (-2 instead of -1)
string tag = Encoding.ASCII.GetString(data, 1, tagEnd - 1);
string message = Encoding.ASCII.GetString(data, tagEnd + 1, data.Length - tagEnd - 2);
return(new AndroidLogEntry()
{
Data = data,
ProcessId = pid,
ThreadId = tid,
TimeStamp = timestamp,
Id = id,
Priority = (Priority)priority,
Message = message,
Tag = tag
});
}
case LogId.Events:
{
// https://android.googlesource.com/platform/system/core.git/+/master/liblog/logprint.c#547
var entry = new EventLogEntry()
{
Data = data,
ProcessId = pid,
ThreadId = tid,
TimeStamp = timestamp,
Id = id
};
// Use a stream on the data buffer. This will make sure that,
// if anything goes wrong parsing the data, we never go past
// the message boundary itself.
using (MemoryStream dataStream = new MemoryStream(data))
using (BinaryReader reader = new BinaryReader(dataStream))
{
var priority = reader.ReadInt32();
while (dataStream.Position < dataStream.Length)
{
this.ReadLogEntry(reader, entry.Values);
}
}
return(entry);
}
default:
return(new LogEntry()
{
Data = data,
ProcessId = pid,
ThreadId = tid,
TimeStamp = timestamp,
Id = id
});
}
}
/// <summary>
/// Reads the next <see cref="LogEntry"/> from the stream.
/// </summary>
/// <returns>
/// A new <see cref="LogEntry"/> object.
/// </returns>
public LogEntry ReadEntry()
{
LogEntry value = new LogEntry();
// Read the log data in binary format. This format is defined at
// https://android.googlesource.com/platform/system/core/+/master/include/log/logger.h
var payloadLength = this.ReadUInt16();
var headerSize = this.ReadUInt16();
var pid = this.ReadInt32();
var tid = this.ReadInt32();
var sec = this.ReadInt32();
var nsec = this.ReadInt32();
// If the headerSize is not 0, we have either a logger_entry_v3 or logger_entry_v2 object.
// For both objects, the size should be 0x18
uint id = 0;
if (headerSize != 0)
{
if (headerSize == 0x18)
{
id = this.ReadUInt32();
}
else
{
throw new Exception();
}
}
byte[] data = this.ReadBytes(payloadLength);
DateTime timestamp = DateTimeHelper.Epoch.AddSeconds(sec);
timestamp = timestamp.AddMilliseconds(nsec / 1000000d);
switch ((LogId)id)
{
case LogId.Crash:
case LogId.Kernel:
case LogId.Main:
case LogId.Radio:
case LogId.System:
{
// format: <priority:1><tag:N>\0<message:N>\0
var priority = data[0];
// Find the first \0 byte in the array. This is the seperator
// between the tag and the actual message
int tagEnd = 1;
while (data[tagEnd] != '\0' && tagEnd < data.Length)
{
tagEnd++;
}
// Message should be null termintated, so remove the last entry, too (-2 instead of -1)
string tag = Encoding.ASCII.GetString(data, 1, tagEnd - 1);
string message = Encoding.ASCII.GetString(data, tagEnd + 1, data.Length - tagEnd - 2);
return new AndroidLogEntry()
{
Data = data,
ProcessId = pid,
ThreadId = tid,
TimeStamp = timestamp,
Id = id,
Priority = priority,
Message = message,
Tag = tag
};
}
case LogId.Events:
{
// https://android.googlesource.com/platform/system/core.git/+/master/liblog/logprint.c#547
var entry = new EventLogEntry()
{
Data = data,
ProcessId = pid,
ThreadId = tid,
TimeStamp = timestamp,
Id = id
};
// Use a stream on the data buffer. This will make sure that,
// if anything goes wrong parsing the data, we never go past
// the message boundary itself.
using (MemoryStream stream = new MemoryStream(data))
using (BinaryReader reader = new BinaryReader(stream))
{
var priority = reader.ReadInt32();
while (stream.Position < stream.Length)
{
this.ReadLogEntry(reader, entry.Values);
}
}
return entry;
}
default:
return new LogEntry()
{
Data = data,
ProcessId = pid,
ThreadId = tid,
TimeStamp = timestamp,
Id = id
};
}
}
