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added automatic and manual package updates packages can be automatically updated from GitHub so that you always have the latest version and support for the latest Venus OS. Packages can also be updated from USB stick. Manual package installation can be performed from SetupHelper's setup script and can come from GitHub or a USB stick fixed various bugs
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| # ServiceManager for SetupHelper | ||
| # contains a functions to install, remove, start and stop a package's service | ||
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| # managing a normal package's service is straight forward | ||
| # | ||
| # normally, services are connected via a symbolic link, but to avoid issues with | ||
| # updating package files, the service directory is COPIED to the /service directory instead. | ||
| # | ||
| # If the active copy of the service already exists, the run and log/run files are updated | ||
| # ONLY if there are changes. This leaves other files managed by supervise untouched. | ||
| # | ||
| # For all functions, $1 specifies the package name | ||
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| # startService and stopService start and stop the service, respectively | ||
| # the 'down' flag is also cleared/set to control service runs in the future | ||
| # startService will cause the service to stop then start again !!! | ||
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| startService () | ||
| { | ||
| # no service to remove | ||
| if [ ! -e "/service/$pkg" ]; then | ||
| return | ||
| fi | ||
| # no package specified | ||
| if [ $# -lt 1 ]; then | ||
| return | ||
| fi | ||
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| local pkg=$1 | ||
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| rm -f "/service/$pkg/down" | ||
| svc -t "/service/$pkg" | ||
| } | ||
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| stopService () | ||
| { | ||
| # no service to remove | ||
| if [ ! -e "/service/$pkg" ]; then | ||
| return | ||
| fi | ||
| # no package specified | ||
| if [ $# -lt 1 ]; then | ||
| return | ||
| fi | ||
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| local pkg=$1 | ||
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| touch "/service/$pkg/down" | ||
| svc -d "/service/$pkg" | ||
| } | ||
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| # killServiceProcesses makes sure there are no services | ||
| # internal function only !!!! | ||
| # must be called from other functions that have already made the necessary checks | ||
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| _killServiceProcesses () | ||
| { | ||
| local pkg=$1 | ||
| ps -l | grep $pkg | grep -v -e grep -e $$ | awk '{print $3}' | xargs kill > /dev/null 2>&1 | ||
| } | ||
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| # | ||
| # removeService cleanly removes the service | ||
| # | ||
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| _removeService () | ||
| { | ||
| # stop the service | ||
| svc -d "/service/$pkg" | ||
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| # remove the active service directory | ||
| rm -rf "/service/$pkg" | ||
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| # kill related processes | ||
| _killServiceProcesses $pkg | ||
| } | ||
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| removeService () | ||
| { | ||
| # no service to remove | ||
| if [ ! -e "/service/$pkg" ]; then | ||
| return | ||
| fi | ||
| # no package specified | ||
| if [ $# -lt 1 ]; then | ||
| return | ||
| fi | ||
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| local pkg=$1 | ||
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| logMessage "removing $pkg service" | ||
| _removeService $pkg | ||
| } | ||
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| # installService adds the service to the /service directory or updates an existing one | ||
| # | ||
| # If the service does not yet exist, it will start immediately unless | ||
| # it includes the 'down' flag file. This behavior is up to the service writer. | ||
| # | ||
| # If the service already exists, installService will stop it, | ||
| # update the service files and stop all child processes | ||
| # Then restart the service unless the down flag is set | ||
| # | ||
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| installService () | ||
| { | ||
| # no service to install | ||
| if [ ! -e "$scriptDir/service" ]; then | ||
| return | ||
| fi | ||
| # no package specified | ||
| if [ $# -lt 1 ]; then | ||
| return | ||
| fi | ||
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| local pkg=$1 | ||
| local serviceRestartNeeded=false | ||
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| if [ -L "/service/$pkg" ]; then | ||
| logMessage "$pkg removing old service (was symbolic link)" | ||
| _removeService $pkg | ||
| fi | ||
| # service not yet installed, COPY service directory to the active locaiton | ||
| if [ ! -e "/service/$pkg" ]; then | ||
| logMessage "$pkg installing service" | ||
| cp -R "$scriptDir/service" "/service/$pkg" | ||
| # service already installed - only copy changed files | ||
| else | ||
| if [ -f "$scriptDir/service/run" ]; then | ||
| cmp -s "$scriptDir/service/run" "/service/$pkg/run" > /dev/null | ||
| if [ $? != 0 ]; then | ||
| cp "$scriptDir/service/run" "/service/$pkg/run" | ||
| serviceRestartNeeded=true | ||
| fi | ||
| fi | ||
| if [ -f "$scriptDir/service/log/run" ]; then | ||
| cmp -s "$scriptDir/service/log/run" "/service/$pkg/log/run" > /dev/null | ||
| if [ $? != 0 ]; then | ||
| cp "$scriptDir/service/log/run" "/service/$pkg/log/run" | ||
| serviceRestartNeeded=true | ||
| fi | ||
| fi | ||
| if $serviceRestartNeeded ; then | ||
| logMessage "$pkg updated service - restarting" | ||
| # stop the service | ||
| svc -d "/service/$pkg" | ||
| # kill related processes | ||
| _killServiceProcesses $pkg | ||
| # bring service back up | ||
| if [ ! -f "/service/down" ]; then | ||
| svc -u "/service/$pkg" | ||
| fi | ||
| fi | ||
| fi | ||
| } | ||
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