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Create temporary files securely.

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This commit is contained in:
Bruce Momjian 2004-11-03 22:46:15 +00:00
parent a809899680
commit 0f7a2a5fbe
1 changed files with 16 additions and 5 deletions
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21
contrib/findoidjoins/make_oidjoins_check
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@ -10,12 +10,23 @@
# Caution: you may need to use GNU awk. # Caution: you may need to use GNU awk.
AWK=${AWK:-awk} AWK=${AWK:-awk}
INPUTFILE="tmp$$a" TMP="/tmp/$$"
DUPSFILE="tmp$$b" trap "rm -rf $TMP" 0 1 2 3 15
NONDUPSFILE="tmp$$c"
rm -f $INPUTFILE $DUPSFILE $NONDUPSFILE
trap "rm -f $INPUTFILE $DUPSFILE $NONDUPSFILE" 0 1 2 3 15 # Create a temporary directory with the proper permissions so no one can
# intercept our temporary files and cause a security breach.
OMASK="`umask`"
umask 077
if ! mkdir $TMP
then echo "Can't create temporary directory $TMP." 1>&2
exit 1
fi
umask "$OMASK"
unset OMASK
INPUTFILE="$TMP/a"
DUPSFILE="$TMP/b"
NONDUPSFILE="$TMP/c"
# Read input # Read input
cat "$@" >$INPUTFILE cat "$@" >$INPUTFILE