commit f1dd22cb25cf3e6b1382b1fdde76ca5d1e75edea
from: matthias <matthias>
date: Tue Dec 18 12:43:16 2007 UTC

o Add file overwrite mode.  If files are modified locally, fetch the
  complete file and overwrite the installed one if the user agrees
o Add appropriate entry to config file
o Add Copyright notive
o Add some comments

commit - 07efcedb12b34ea8f17581ef6b79a9da4ab369a6
commit + f1dd22cb25cf3e6b1382b1fdde76ca5d1e75edea
blob - 0d8c7d60e3c4b6d99f608aa5d2b0443bed604514
blob + 169f5c1541aa5e689b046f08e277fe73fca3ef6b
--- client/update-dragonfly.conf
+++ client/update-dragonfly.conf
@@ -1,11 +1,16 @@
 # URL of the update server
 SERVER=http://globus.mathematik.uni-marburg.de:2323
+
 # Path on the update server
-RPATH=apache2-default/update/
+RPATH=apache2-default/update/up
+
 # SHA1 Fingerprint
 FINGERPRINT=25d291846a993e055a368fa07f58c545ffba283f
+
 # Location on the local filesystem where all updates are stored
 LOC=/usr/update-dragonfly
+
 # Set this variable to 1 if you want update-dragonfly to overwrite locally
 # modified files (eg you compiled world with special compiler flags)
-OVERWRITE=0
+# Use this option with caution!
+OVERWRITE=1
blob - 7160356db344e5e8376fa227316eaa55e5974251
blob + 155850f41738773d51281fc92e27a9e29e2380ee
--- client/update-dragonfly.sh
+++ client/update-dragonfly.sh
@@ -1,8 +1,10 @@
 #!/bin/sh
 
+# Copyright (c) 2007 Matthias Schmidt <schmidtm@mathematik.uni-marburg.de>
+
 export PATH=/sbin:/bin:/usr/sbin:/usr/bin:${PATH}
 
-# Print a message if -v is give
+# Print a message if -v is given
 log()
 {
 	MSG=$1
@@ -58,6 +60,7 @@ save_file_perm()
 			FL="0"
 		fi
 		STR=`stat -f "%OLp#%Su#%Sg" ${1}` || return
+		# Write install log entry
                 echo "${1}#${STR}#${2}#${FL}" >> ${TMPLOG}
         else
                 log "${1} not installed.  Help me"
@@ -125,6 +128,7 @@ check_for_file()
 			return 2
 		elif [ "`${SUM} -q ${1}`" != "${2}" -a ${OVERWRITE} -eq 1 ]; then
 			log "${1} modified locally, but you choosed to overwrite it"
+			return 3
 		fi
 	fi
 
@@ -344,7 +348,7 @@ get_updates()
 		}
 	
 		# Verify the diff	
-		if [ "`${SUM} -q ${LOC}/${VERSION}/${DIFF}`" != "$SUM_DIFF" ]; then
+		if [ "`${SUM} -q ${LOC}/${VERSION}/${DIFF}`" != "${SUM_DIFF}" ]; then
 			echo "Patch ${DIFF} corrupt.  Abort."
 			exit 1
 		fi
@@ -352,19 +356,41 @@ get_updates()
 		# Check if the file we want to patch is installed on the local
 		# machine and if the file matches the original checksum
 		check_for_file ${BINARY} ${SUM_OLD}
-		if [ $? -eq 1 -o $? -eq 2 ]; then
-			break
+		RET=$?
+		OVER=0
+		if [ ${RET} -eq 1 -o ${RET} -eq 2 ]; then
+			continue	
+		# User agreed to overwrite, but we have a checksum mismatch
+		# thus fetch the whole file
+		elif [ ${RET} -eq 3 ]; then
+			log "Fetch complete file"
+			FNAME=`echo ${BINARY} | sed -e 's/\//_/g'`
+			# Fetch the complete file
+			fetch -q -o ${LOC}/${VERSION}/${FNAME} \
+				${SERVER}/${RPATH}/${VERSION}/${ARCH}/${FNAME} || {
+				echo "Cannot fetch ${LOC}/${VERSION}/${FNAME}.  Abort"
+				exit 1
+			}
+			# Verify the file
+			if [ "`${SUM} -q ${LOC}/${VERSION}/${FNAME}`" != "${SUM_NEW}" ]; then
+				echo "Fetched ${BINARY} corrupt.  Abort."
+				exit 1
+			fi
+			OVER=1
 		fi
-
+		
 		# Check if the file is already installed.  This is necessary here
 		# because trying to patch an already patched file would fail
 		check_already_installed ${BINARY} ${SUM_NEW}
-		if [ $? -eq 0 ]; then
+		RET=$?
+		if [ ${RET} -eq 0 -a ${OVER} -eq 0 ]; then
 			# Patch existing file
-			log "Save permissions"
 			save_file_perm ${BINARY} ${SUM_NEW}
 			log "Patch ${BINARY}"
 			patch_file ${BINARY} ${DIFF} ${SUM_NEW}
+		elif [ ${RET} -eq 0 -a ${OVER} -eq 1 ]; then
+			# Overwrite existing file
+			save_file_perm ${BINARY} ${SUM_NEW}
 		fi
 	done
 }