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MAN page from openSUSE Leap 42 freerdp-2.0.0~rc1-86.1.x86_64.rpm

wLog

Section: 2.0 (7)
Updated: June 2016
Index 

NAME

wLog - WinPR logging facility

 

DESCRIPTION

wLog is a configurable and flexible logging system used throughout WinPR andFreeRDP.

The primary concept is to have a hierarchy of loggers that can be be configuredindependently.

 

Appenders

WLog uses different appenders that define where the log output should be writtento. If the application doesn't explicitly configure the appenders the belowdescribed variable WLOG_APPENDER can be used to choose one appender.

The following kind of appenders are available:

Binary
Write the log data into a binary format file.

Console
The console appender writes to the console. Depending of the operating systemthe application runs on, the output might be handled differently. For exampleon android log print would be used.

File
The file appender writes the textual output to a file.

Udp
This appender sends the logging messages to a pre-defined remote host via UDP.

If no target is set the default one 127.0.0.1:20000 is used. To receive thelog messages one can use netcat. To receive the default target the followingcommand can be used:nc -u 127.0.0.1 -p 20000 -l

Syslog
Use syslog for outputting the debug messages.
Journald
This appender outputs messages to journald.

 

Levels

The WLog are complementary, the higher level always includes the lower ones.The level list below is top down. Top the highest level.

TRACE
print everything including packets dumps
DEBUG
debug messages
INFO
general information
WARN
warnings
ERROR
errors
FATAL
fatal problems
OFF
completely disable the wlog output

 

Formats

The format a logger prints has the following possible options:

lv
log level
mn
module name
fl
file name
fn
function
ln
line number
pid
process id
tid
thread id
yr
year
mo
month
dw
day of week
hr
hour
mi
minute
se
second
ml
millisecond

A maximum of 16 options can be used per format string.

An example that generally sets the WLOG_PREFIX for xfreerdp would look like:WLOG_PREFIX="pid=%pid:tid=%tid:fn=%fn -" xfreerdp /v:xxx

 

ENVIRONMENT

WLOG_APPENDER
The kind of appender, the accepted values are: CONSOLE, FILE, BINARY, SYSLOG, JOURNALD or UDP

WLOG_PREFIX
configure the prefix used for outputting the message (see Format for more details and examples)

WLOG_LEVEL
the level to output messages for

WLOG_FILTER
sets a filter for WLog messages. Only the filtered messages areprinted. The format of the filter is a series of <logger name>:<level> separated bycomas

example: WLOG_FILTER=core.channel:DEBUG,dummy:TRACEwill display debug messages for the core.channel logger and trace level for the dummy logger

WLOG_FILEAPPENDER_OUTPUT_FILE_PATH
When using the file appender it may contains the output log file's path

WLOG_FILEAPPENDER_OUTPUT_FILE_NAME
When using the file appender it may contains the output log file's name

WLOG_JOURNALD_ID
When using the systemd journal appender, this variable contains the id used withthe journal (by default the executable's name)

WLOG_UDP_TARGET
target to use for the UDP appender in the formathost:port

 

BUGS

Please report any bugs using the bug reporting form on theFreeRDPweb site

 

SEE ALSO

Additional information and the latest version is availableat the web site:http://www.freerdp.com

 

AUTHOR

David Fort <contactAATThardening-consulting.com> wrote this manpage from materials writtenby Bernhard Miklautz <bernhard.miklautzAATTthincast.com>.


 

Index

NAME
DESCRIPTION
Appenders
Levels
Formats
ENVIRONMENT
BUGS
SEE ALSO
AUTHOR

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