diff options
Diffstat (limited to 'trunk/contrib/scripts/safe_asterisk')
| -rw-r--r-- | trunk/contrib/scripts/safe_asterisk | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/trunk/contrib/scripts/safe_asterisk b/trunk/contrib/scripts/safe_asterisk new file mode 100644 index 000000000..05e44d895 --- /dev/null +++ b/trunk/contrib/scripts/safe_asterisk @@ -0,0 +1,184 @@ +#!/bin/bash +# vim:textwidth=80:tabstop=4:shiftwidth=4:smartindent:autoindent + +CLIARGS="$*" # Grab any args passed to safe_asterisk +TTY=9 # TTY (if you want one) for Asterisk to run on +CONSOLE=yes # Whether or not you want a console +#NOTIFY=ben@alkaloid.net # Who to notify about crashes +#EXEC=/path/to/somescript # Run this command if Asterisk crashes +#LOGFILE=/path/to/logfile # Where to place the normal logfile (disabled if blank) +#SYSLOG=local0 # Which syslog facility to use (disabled if blank) +MACHINE=`hostname` # To specify which machine has crashed when getting the mail +DUMPDROP=/tmp +SLEEPSECS=4 +ASTSBINDIR=__ASTERISK_SBIN_DIR__ +ASTPIDFILE=__ASTERISK_VARRUN_DIR__/asterisk.pid + +# comment this line out to have this script _not_ kill all mpg123 processes when +# asterisk exits +KILLALLMPG123=1 + +# run asterisk with this priority +PRIORITY=0 + +# set system filemax on supported OSes if this variable is set +# SYSMAXFILES=262144 + +# set max files open with ulimit. On linux systems, this will be automatically +# set to the system's maximum files open devided by two, if not set here. +# MAXFILES=32768 + +function message() { + echo "$1" >&2 + if [ "$SYSLOG" != "" ]; then + logger -p "${SYSLOG}.warn" -t safe_asterisk[$$] "$1" + fi + if [ "$LOGFILE" != "" ]; then + echo "safe_asterisk[$$]: $1" >> "$LOGFILE" + fi +} + +# since we're going to change priority and open files limits, we need to be +# root. if running asterisk as other users, pass that to asterisk on the command +# line. +# if we're not root, fall back to standard everything. +if [ `id -u` != 0 ] +then + echo "Oops. I'm not root. Falling back to standard prio and file max." >&2 + echo "This is NOT suitable for large systems." >&2 + PRIORITY=0 + message "safe_asterisk was started by `id -n` (uid `id -u`)." +else + if `echo $OSTYPE | grep linux 2>&1 > /dev/null ` + then + # maximum number of open files is set to the system maximum divided by two if + # MAXFILES is not set. + if [ "$MAXFILES" = "" ] + then + # just check if file-max is readable + if [ -r /proc/sys/fs/file-max ] + then + MAXFILES=$(( `cat /proc/sys/fs/file-max` / 2 )) + fi + fi + SYSCTL_MAXFILES="fs.file-max" + elif `echo $OSTYPE | grep darwin 2>&1 > /dev/null ` + then + SYSCTL_MAXFILES="kern.maxfiles" + fi + + + if [ "$SYSMAXFILES" != "" ] + then + if [ "$SYSCTL_MAXFILES" != "" ] + then + sysctl -w $SYSCTL_MAXFILES=$SYSMAXFILES + fi + fi + + # set the process's filemax to whatever set above + ulimit -n $MAXFILES + +fi + +# +# Let Asterisk dump core +# +ulimit -c unlimited + +# +# Don't fork when running "safely" +# +ASTARGS="" +if [ "$TTY" != "" ]; then + if [ -c /dev/tty${TTY} ]; then + TTY=tty${TTY} + elif [ -c /dev/vc/${TTY} ]; then + TTY=vc/${TTY} + else + message "Cannot find specified TTY (${TTY})" + exit 1 + fi + ASTARGS="${ASTARGS} -vvvg" + if [ "$CONSOLE" != "no" ]; then + ASTARGS="${ASTARGS} -c" + fi +fi +if [ ! -w ${DUMPDROP} ]; then + message "Cannot write to ${DUMPDROP}" + exit 1 +fi + +# +# Don't die if stdout/stderr can't be written to +# +trap '' PIPE + +# +# Run scripts to set any environment variables or do any other system-specific setup needed +# + +if [ -d /etc/asterisk/startup.d ]; then + for script in /etc/asterisk/startup.d/*.sh; do + if [ -x ${script} ]; then + source ${script} + fi + done +fi + +run_asterisk() +{ + while :; do + + if [ "$TTY" != "" ]; then + cd /tmp + stty sane < /dev/${TTY} + nice -n $PRIORITY ${ASTSBINDIR}/asterisk -f ${CLIARGS} ${ASTARGS} >& /dev/${TTY} < /dev/${TTY} + else + cd /tmp + nice -n $PRIORITY ${ASTSBINDIR}/asterisk -f ${CLIARGS} ${ASTARGS} + fi + EXITSTATUS=$? + message "Asterisk ended with exit status $EXITSTATUS" + if [ "$EXITSTATUS" = "0" ]; then + # Properly shutdown.... + message "Asterisk shutdown normally." + exit 0 + elif [ $EXITSTATUS -gt 128 ]; then + let EXITSIGNAL=EXITSTATUS-128 + echo "Asterisk exited on signal $EXITSIGNAL." + if [ "$NOTIFY" != "" ]; then + echo "Asterisk on $MACHINE exited on signal $EXITSIGNAL. Might want to take a peek." | \ + mail -s "Asterisk Died" $NOTIFY + message "Exited on signal $EXITSIGNAL" + fi + if [ "$EXEC" != "" ]; then + $EXEC + fi + + PID=`cat ${ASTPIDFILE}` + if [ -f /tmp/core.${PID} ]; then + mv /tmp/core.${PID} ${DUMPDROP}/core.`hostname`-`date -Iseconds` & + elif [ -f /tmp/core ]; then + mv /tmp/core ${DUMPDROP}/core.`hostname`-`date -Iseconds` & + fi + else + message "Asterisk died with code $EXITSTATUS." + + PID=`cat ${ASTPIDFILE}` + if [ -f /tmp/core.${PID} ]; then + mv /tmp/core.${PID} ${DUMPDROP}/core.`hostname`-`date -Iseconds` & + elif [ -f /tmp/core ]; then + mv /tmp/core ${DUMPDROP}/core.`hostname`-`date -Iseconds` & + fi + fi + message "Automatically restarting Asterisk." + sleep $SLEEPSECS + if [ $KILLALLMPG123 ] + then + killall -9 mpg123 + fi + done +} + +run_asterisk & |