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      1 #!/usr/bin/ksh
      2 #
      3 # install - installer for the DTraceToolkit
      4 #
      5 # This is a fairly simple script, most of it is error checking.
      6 # All the script does is copy the DTraceToolkit files to another directory,
      7 # with various checks. The user could have copied the files themselves, this
      8 # script doesn't do anything special to them. It's really here in case
      9 # people extrace the toolkit and go looking for an installer.
     10 #
     11 # 15-May-2005	Brendan Gregg	Created this.
     12 
     13 DEBUG=0		# print debug data
     14 TEETH=1		# does this script have teeth
     15 SLEEP=1		# pause on messages
     16 PATH=/usr/bin
     17 
     18 ### Ensure we know where we are,
     19 dir=${0%/*}
     20 cd $dir
     21 (( DEBUG )) && print "DEBUG: dir $dir"
     22 
     23 ### Print welcome,
     24 print "DTraceToolkit Installation\n---------------------------"
     25 cat Version
     26 print "\nhit Ctrl-C any time you wish to quit.\n\n"
     27 
     28 ### Fetch location,
     29 print -n "Enter target directory for installation [/opt/DTT]: "
     30 read loc junk
     31 if [[ "$loc" == "" ]]; then loc="/opt/DTT"; fi
     32 print ""
     33 (( DEBUG )) && print "DEBUG: loc $loc"
     34 
     35 ### Sanity check,
     36 if print "$loc" | grep '^[./]*$' > /dev/null; then 
     37 	print "ERROR1: Location \"$loc\" is ambiguous.\n."
     38 	(( SLEEP )) && sleep 1
     39 	print ".\tTry a full path, like \"/opt/DTT\"\n."
     40 	print ".\tSorry!\n"
     41 	exit 1
     42 fi
     43 
     44 ### Evilness check,
     45 if print "$loc" | grep '[^a-zA-Z0-9_.-/]' > /dev/null; then 
     46 	print "ERROR2: Sorry, location \"$loc\" contains bad characters.\n."
     47 	(( SLEEP )) && sleep 1
     48 	print ".\tTry a path like \"/opt/DTT\"\n."
     49 	print ".\tSorry!\n"
     50 	exit 2
     51 fi
     52 
     53 ### Process location,
     54 basename=${loc%/*}
     55 nodename=${loc##*/}
     56 if [[ "$basename" == "" ]]; then basename="/"; fi
     57 (( DEBUG )) && print "DEBUG: basename $basename"
     58 (( DEBUG )) && print "DEBUG: nodename $nodename"
     59 
     60 ### Check parent dir exists,
     61 if [[ ! -d "$basename" ]]; then
     62 	print "ERROR3: Parent directory \"$basename\" does not exist!\n."
     63 	(( SLEEP )) && sleep 1
     64 	print ".\tI'm not sure what you want me to do here, if you were"
     65 	print ".\tserious about the above parent directory - then run"
     66 	print ".\ta \"mkdir -p $basename\" first, then rerun this script.\n."
     67 	print ".\tSorry!\n"
     68 	exit 3
     69 fi
     70 
     71 ### Check parent dir perms,
     72 if [[ ! -w "$basename" ]]; then
     73 	print "ERROR4: Can't write to parent directory \"$basename\"!\n."
     74 	(( SLEEP )) && sleep 1
     75 	print ".\tSince I can't write to this directory, I can't install the"
     76 	print ".\tDTraceToolkit. You are currently logged in as,\n."
     77 	id | sed 's/^/.		/'
     78 	print ".\n.\tand the directory has permissions,\n."
     79 	ls -ld "$basename" | awk '{ print ".\t\t",$1,$2,$3,$4,"..." }'
     80 	owner=`ls -ld "$basename" | awk '{ print $3 }'`
     81 	print ".\n.\tMaybe you need to run \"su - $owner\" first?\n."
     82 	print ".\tSorry!\n"
     83 	exit 4
     84 fi
     85 
     86 ### Check if toolkit is already installed,
     87 if [[ -d "$loc" ]]; then
     88 	print "Warning: Possible old version of the DTraceToolkit found."
     89 	print "\tThis will DELETE the files in $loc, then install the toolkit."
     90 	(( SLEEP )) && sleep 1
     91 	if [[ ! -f "$loc/Version" ]]; then
     92 		print "\nWARNING: $loc doesn't look like an old DTraceToolkit!"
     93 		(( SLEEP )) && sleep 1
     94 	fi
     95 	print -n "\nContinue (will run \"rm -rf $loc\"). Are you sure (y/N)?: "
     96 	read ans junk
     97 	if [[ "$ans" != "y" ]]; then
     98 		print "\nExiting..."
     99 		exit 5
    100 	fi
    101 	if (( TEETH )); then
    102 		rm -rf "$loc"
    103 	else
    104 		print COMMAND: rm -rf \"$loc\"
    105 	fi
    106 fi
    107 
    108 ### Make new toolkit dir,
    109 print "\nMaking directory \"$loc\"...\n"
    110 if (( TEETH )); then
    111 	mkdir -p "$loc"
    112 else
    113 	print COMMAND: mkdir -p \"$loc\"
    114 fi
    115 if [[ ! -d "$loc" || ! -w "$loc" ]]; then
    116 	print "ERROR6: Creation of \"$loc\" failed.\n."
    117 	(( SLEEP )) && sleep 1
    118 	print ".\tCheck directory location and try again.\n."
    119 	print ".\tSorry!\n"
    120 	exit 6
    121 fi
    122 
    123 ### Copy files across,
    124 print "\nCopying DTraceToolkit files...\n"
    125 if (( TEETH )); then
    126 	tar cf - . | (cd "$loc"; tar xvf -)
    127 else 
    128 	print COMMAND: "tar cf - . | (cd \"$loc\"; tar xvf -)"
    129 fi
    130 error=$?
    131 if [[ ! -f "$loc/install" ]]; then error=1; fi
    132 if (( error )); then
    133 	print "ERROR7: Failure during copy.\n."
    134 	(( SLEEP )) && sleep 1
    135 	print ".\tCheck source \"$dir\" and destination \"$loc\", then"
    136 	print ".\ttry again.\n."
    137 	print ".\tSorry!\n"
    138 	exit 7
    139 fi
    140 
    141 ### Delete installer,
    142 if (( TEETH )); then
    143 	rm "$loc/install"
    144 else
    145 	print COMMAND: rm \"$loc/install\"
    146 fi
    147 
    148 ### Finished,
    149 print "\nFinished.\n"
    150 print "Installed to \"$loc\". See $loc/Guide for how to get started.\n"
    151 
    152