openkylin
/
net-snmp
mirror of https://gitee.com/openkylin/net-snmp.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
net-snmp/local/mib2c-update

367 lines
8.6 KiB
Bash
Executable File
Raw Blame History

#!/bin/sh
#
# $Id$
#
# script to merge custom code into updated mib2c code
#
#----- example .mib2c-updaterc -----
#UPDATE_OID=ipAddressTable
#UPDATE_CONF=mib2c.mfd.conf
#UPDATE_MIB2C_OPTS=
#UPDATE_NOPROBE=1
#----- example .mib2c-updaterc -----
#----------------------------------------------------------------------
#
# defaults
#
UPDATE_CURR=$PWD
UPDATE_ORIG=$PWD/.orig
UPDATE_NEW=$PWD/.new
UPDATE_MERGED=$PWD/.merged
UPDATE_BACKUP=$PWD/.backup
UPDATE_PATCH=$PWD/.patch
#
# number of diff context lines / patch fuzz factor
#
FUZZ=5
FIRST_RUN=0
#----------------------------------------------------------------------
#
debug()
{
if [ $UPDATE_DEBUG -ge 1 ]; then
echo $1
fi
}
error()
{
echo "ERROR: $@" >&2
}
die()
{
error "$@"
exit 99
}
safecd()
{
cd $1
if [ $? -ne 0 ]; then
die "changing to directory $1 from $PWD failed!"
fi
}
safecp()
{
cp $@
if [ $? -ne 0 ]; then
die "'cp $@' failed!"
fi
}
#----------------------------------------------------------------------
#
check_setup()
{
rc=1
for d in $UPDATE_CURR $UPDATE_ORIG $UPDATE_NEW $UPDATE_MERGED $UPDATE_PATCH $UPDATE_BACKUP $UPDATE_BACKUP/curr $UPDATE_BACKUP/orig
do
if [ ! -d $d ]; then
echo "Creating missing directory $d"
mkdir -p $d
if [ $? -ne 0 ]; then
error "Could not create directory $d"
rc=0
fi
fi
done
if [ -z "$UPDATE_OID" ]; then
error "Environment variable missing! Set UPDATE_OID in .mib2c-updaterc"
rc=0
fi
if [ -z "$UPDATE_CONF" ]; then
error "Environment variable missing! Set UPDATE_CONF in .mib2c-updaterc"
rc=0
fi
# if [ -z "$UPDATE_" ]; then
# error "Environment variable missing! Set UPDATE_ in .mib2c-updaterc"
# rc=0
# fi
if [ $rc -eq 0 ] && [ $UPDATE_NOPROBE -ne 1 ]; then
mib2c -c unknown > /dev/null 2>&1
if [ $? -eq 0 ]; then
error "WARNING: mib2c returns 0 on error conditions!"
rc=0
fi
fi
return $rc
}
#----------------------------------------------------------------------
#
do_diff()
{
DD_ORIG=$1
DD_CURR=$2
DD_OUTPUT=$3
# u | c unified | context
# r recursive
# b ignore blank lines
# w ignore white space
# p Show which C function each change is in.
# d smaller changes
# --exclude='*Makefile' --unidirectional-new-file
local rc=0
local rcs=0
safecd $DD_ORIG
echo " checking files in $1 ($PWD)"
files=`ls *$UPDATE_OID* 2>/dev/null`
if [ ! -z "$files" ]; then
for f in $files; do
diff -U $FUZZ -p -b -w --show-c-function \
-I "$""Id:" $f $DD_CURR/$f >> $DD_OUTPUT
rc=$?
rcs=`expr $rcs + $rc`
if [ $rc -eq 1 ]; then
echo " $f is different"
fi
done
fi
if [ $rcs -eq 0 ]; then
rm -f $DD_OUTPUT
fi
safecd -
return $rcs
}
#----------------------------------------------------------------------
#
do_cp()
{
src=$1
dest=$2
if [ ! -d $dest ]; then
die "dest $dest is not a directory"
fi
if [ ! -d $src ]; then
die "src $src is not a directory"
fi
safecd $src
files=`ls *$UPDATE_OID* 2>/dev/null| egrep "(file|onf|m2d|txt|\.c|\.h)$"`
if [ -z "$files" ]; then
echo " no files to copy from $src"
else
safecp $files $dest
if [ $? -ne 0 ]; then
die "error while copying files from $src to $dest in $PWD"
fi
fi
safecd -
}
#----------------------------------------------------------------------
#
save_diff()
{
echo "Creating patch for your custom code"
cnt=`ls $UPDATE_CURR/*$UPDATE_OID* 2>/dev/null | egrep "(file|onf|m2d|txt|\.c|\.h)$" | wc -l`
if [ $cnt -eq 0 ]; then
echo " no custom code!"
FIRST_RUN=1
return
fi
do_diff $UPDATE_ORIG/ $UPDATE_CURR/ $UPDATE_PATCH/custom.$UPDATE_DATE
if [ $? -eq 0 ]; then
echo " no custom code changes found."
fi
}
#----------------------------------------------------------------------
#
gen_code()
{
copy_defaults . $UPDATE_NEW
safecd $UPDATE_NEW
files=`ls *$UPDATE_OID* 2>/dev/null | grep -v "^default"`
if [ ! -z "$files" ]; then
rm -f $files > /dev/null 2>&1
fi
echo "mib2c $@ -c $UPDATE_CONF $UPDATE_MIB2C_OPTS $UPDATE_OID"
mib2c $@ -c $UPDATE_CONF $UPDATE_MIB2C_OPTS $UPDATE_OID
if [ $? -ne 0 ]; then
die "bad rc $rc from mib2 while generation new code."
fi
safecd -
}
#----------------------------------------------------------------------
#
check_new()
{
echo "Checking for updates to generated code"
do_diff $UPDATE_ORIG/ $UPDATE_NEW/ $UPDATE_PATCH/generated.$UPDATE_DATE
if [ $? -eq 0 ]; then
echo "Generated code has not changed."
safecd $UPDATE_PATCH
files=`ls *.$UPDATE_DATE 2>/dev/null `
if [ ! -z "$files" ]; then
rm $files
fi
exit 0
fi
}
#----------------------------------------------------------------------
#
merge_code()
{
files=`ls $UPDATE_MERGED/* 2>/dev/null `
if [ ! -z "$files" ]; then
rm $UPDATE_MERGED/*
fi
do_cp $UPDATE_NEW $UPDATE_MERGED
if [ -f $UPDATE_PATCH/custom.$UPDATE_DATE ]; then
touch .M2C-UPDATE-MERGE-FAILED
echo "Patching new generated code in $UPDATE_MERGED ($PWD)"
# --forward = ignore already applied
patch --forward -F $FUZZ -N -d $UPDATE_MERGED -i $UPDATE_PATCH/custom.$UPDATE_DATE
if [ $? -ne 0 ]; then
error "Could not apply custom code patch to new generated code"
die "You must fix the problem in $UPDATE_MERGED, and then re-run mib2c-update."
fi
rm .M2C-UPDATE-MERGE-FAILED
fi
}
copy_defaults()
{
SRC=$1
DST=$2
if [ -d $SRC/defaults ]; then
safecp -a $SRC/defaults $DST
else
files=`ls $SRC/default-*.m2d 2>/dev/null `
if [ ! -z "$files" ]; then
safecp $files $DST
fi
fi
}
copy_merged()
{
echo "Backing up current code to $UPDATE_BACKUP/curr"
do_cp $UPDATE_CURR $UPDATE_BACKUP/curr/
copy_defaults . $UPDATE_BACKUP/curr/
echo "Copying merged code to $UPDATE_CURR"
do_cp $UPDATE_MERGED $UPDATE_CURR/
echo "Backing up original code to $UPDATE_BACKUP/orig"
do_cp $UPDATE_ORIG $UPDATE_BACKUP/orig/
echo "Saving new original code to $UPDATE_ORIG"
do_cp $UPDATE_NEW $UPDATE_ORIG/
}
copy_new()
{
echo "Copying code to $UPDATE_CURR"
do_cp $UPDATE_NEW $UPDATE_CURR/
# copy defaults back to current dir (which may not be UPDATE_CURR)
copy_defaults $UPDATE_NEW .
echo "Saving original code to $UPDATE_ORIG"
do_cp $UPDATE_NEW $UPDATE_ORIG/
}
copy_code()
{
if [ $FIRST_RUN -ne 1 ]; then
copy_merged
else
copy_new
fi
# always get defaults from UPDATE_NEW, since those are what were used.
copy_defaults $UPDATE_NEW .
}
#----------------------------------------------------------------------
UPDATE_NOPROBE=0
if [ -f $HOME/.mib2c-updaterc ]; then
. $HOME/.mib2c-updaterc
fi
if [ -f $PWD/.mib2c-updaterc ]; then
. $PWD/.mib2c-updaterc
else
echo "creating example .mib2c-udpaterc. edit as needed and re-run "
echo "mib2c-update."
echo "UPDATE_OID=ipAddressTable" >> .mib2c-updaterc
echo "UPDATE_CONF=mib2c.mfd.conf" >> .mib2c-updaterc
echo "UPDATE_MIB2C_OPTS=" >> .mib2c-updaterc
echo "#UPDATE_NOPROBE=1" >> .mib2c-updaterc
fi
check_setup
if [ $? -ne 1 ]; then
exit 1
fi
UPDATE_DATE=`date "+%F_%I.%M"`
echo "Starting regneration of $UPDATE_OID using $UPDATE_CONF at $UPDATE_DATE"
if [ -f .M2C-UPDATE-MERGE-FAILED ]; then
echo "It appears that the last run of mib2c-update was not able to merge"
echo "your changes automatically. Do you want to:"
echo
while : ; do
echo "[c)opy merged files to $UPDATE_CURR]"
echo "[r)e-run from scratch]"
echo "[q)uit]"
echo "(c|r|q) ?"
read ans
if [ "x$ans" = "xr" ]; then
rm .M2C-UPDATE-MERGE-FAILED
break
elif [ "x$ans" = "xc" ]; then
echo "Have you have manually merged all the"
echo "changes into the merged directory?"
echo "(y|n)"
read ans
if [ "x$ans" != "xy" ]; then
echo "Ok. Try again after you've done that."
exit 1
fi
rm .M2C-UPDATE-MERGE-FAILED
copy_code
exit 0
fi
done
fi
save_diff
gen_code $@
if [ $FIRST_RUN -ne 1 ]; then
check_new
merge_code
fi
copy_code
Reference in New Issue View Git Blame Copy Permalink