194 lines
3.8 KiB
Bash
194 lines
3.8 KiB
Bash
#!/bin/sh
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#-------------------------------------------------------------------------
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#
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# destroyuser.sh--
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# utility for destroying a user from the POSTGRES database.
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#
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# Copyright (c) 1994, Regents of the University of California
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#
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#
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# IDENTIFICATION
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# $Header: /cvsroot/pgsql/src/bin/destroyuser/Attic/destroyuser.sh,v 1.2 1996/07/25 06:55:49 scrappy Exp $
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#
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# Note - this should NOT be setuid.
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#
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#-------------------------------------------------------------------------
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# ----------------
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# Set paths from environment or default values.
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# The _fUnKy_..._sTuFf_ gets set when the script is installed
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# from the default value for this build.
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# Currently the only thing we look for from the environment is
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# PGDATA, PGHOST, and PGPORT
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#
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# ----------------
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[ -z "$PGPORT" ] && PGPORT=5432
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[ -z "$PGHOST" ] && PGHOST=localhost
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BINDIR=_fUnKy_BINDIR_sTuFf_
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PATH=$BINDIR:$PATH
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CMDNAME=`basename $0`
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if [ -z "$USER" ]; then
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if [ -z "$LOGNAME" ]; then
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if [ -z "`whoami`" ]; then
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echo "$CMDNAME: cannot determine user name"
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exit 1
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fi
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else
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USER=$LOGNAME
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export USER
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fi
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fi
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while (test -n "$1")
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do
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case $1 in
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-a) AUTHSYS=$2; shift;;
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-h) PGHOST=$2; shift;;
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-p) PGPORT=$2; shift;;
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*) DELUSER=$1;;
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esac
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shift;
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done
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AUTHOPT="-a $AUTHSYS"
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[ -z "$AUTHSYS" ] && AUTHOPT=""
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PARGS="-Tq $AUTHOPT -p $PGPORT -H $PGHOST"
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#
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# generate the first part of the actual monitor command
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#
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PSQL="psql $PARGS"
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#
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# see if user $USER is allowed to create new users. Only a user who can
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# create users can delete them.
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#
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QUERY="select usesuper from pg_user where usename = '$USER'"
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ADDUSER=`$PSQL -c "$QUERY" template1`
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if [ $? -ne 0 ]
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then
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echo "$CMDNAME: database access failed."
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exit 1
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fi
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if [ $ADDUSER != "t" ]
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then
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echo "$CMDNAME: $USER cannot delete users."
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fi
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#
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# get the user name of the user to delete. Make sure it exists.
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#
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if [ -z "$DELUSER" ]
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then
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echo _fUnKy_DASH_N_sTuFf_ "Enter name of user to delete ---> "_fUnKy_BACKSLASH_C_sTuFf_
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read DELUSER
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fi
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QUERY="select usesysid from pg_user where usename = '$DELUSER'"
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RES=`$PSQL -c "$QUERY" template1`
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if [ $? -ne 0 ]
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then
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echo "$CMDNAME: database access failed."
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exit 1
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fi
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if [ ! -n "$RES" ]
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then
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echo "$CMDNAME: user "\"$DELUSER\"" does not exist."
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exit 1
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fi
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SYSID=`echo $RES | sed 's/ //g'`
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#
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# destroy the databases owned by the deleted user. First, use this query
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# to find out what they are.
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#
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QUERY="select datname from pg_database where datdba = '$SYSID'::oid"
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ALLDBS=`$PSQL -c "$QUERY" template1`
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if [ $? -ne 0 ]
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then
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echo "$CMDNAME: database access failed - exiting..."
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exit 1
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fi
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#
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# don't try to delete template1!
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#
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for i in $ALLDBS
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do
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if [ $i != "template1" ]
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then
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DBLIST="$DBLIST $i"
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fi
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done
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if [ -n "$DBLIST" ]
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then
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echo "User $DELUSER owned the following databases:"
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echo $DBLIST
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echo
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#
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# Now we warn the DBA that deleting this user will destroy a bunch of databases
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#
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yn=f
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while [ $yn != y -a $yn != n ]
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do
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echo _fUnKy_DASH_N_sTuFf_ "Deleting user $DELUSER will destroy them. Continue (y/n)? "_fUnKy_BACKSLASH_C_sTuFf_
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read yn
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done
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if [ $yn = n ]
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then
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echo "$CMDNAME: exiting"
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exit 1
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fi
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#
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# now actually destroy the databases
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#
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for i in $DBLIST
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do
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echo "destroying database $i"
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QUERY="drop database $i"
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$PSQL -c "$QUERY" template1
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if [ $? -ne 0 ]
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then
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echo "$CMDNAME: drop database on $i failed - exiting"
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exit 1
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fi
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done
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fi
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QUERY="delete from pg_user where usename = '$DELUSER'"
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$PSQL -c "$QUERY" template1
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if [ $? -ne 0 ]
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then
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echo "$CMDNAME: delete of user $DELUSER was UNSUCCESSFUL"
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else
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echo "$CMDNAME: delete of user $DELUSER was successful."
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fi
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exit 0
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