libcom.sh

   1 ##
   2 ## Common used functions library
   3 ##
   4
   5 # die
   6 #
   7 # $1: Exit code
   8 # $2: Error message
   9 #
  10 # Returns: nothing
  11 #
  12 # Print the error message in standard error output
  13 # and exit
  14 #
  15 die()
  16 {
  17         exitcode=$1
  18         str="$2"
  19
  20         echo -e "Error: $str" >> /dev/stderr
  21         exit $exitcode
  22 }
  23
  24
  25 # die_on_error
  26 #
  27 # $1: Return code
  28 # $2: Error message
  29 #
  30 # Returns: nothing
  31 #
  32 # Calls die() if return code is not zero
  33 #
  34 die_on_error()
  35 {
  36         retcode=$1
  37         errmesg="$2"
  38
  39         if [ $retcode -ne 0 ]; then
  40                 die 1 "$errmesg"
  41         fi
  42 }
  43
  44 # send_email_report
  45 #
  46 # $1: Subject
  47 # $2: E-mail contents
  48 #
  49 # Returns: sendmail's exit code
  50 #
  51 # Send an e-mail to the address specified in the TO_ADDR variable
  52 # from the address specified in the FROM_ADDR
  53 #
  54 # Note that sendmail must be proper installed
  55 #
  56 send_email_report()
  57 {
  58         to=$TO_ADDR
  59         from=$FROM_ADDR
  60         subject=$1
  61         contents=$2
  62         tmpfile=/tmp/email.XXXXXXXXXX
  63         emailfile=$(mktemp $tmpfile)
  64
  65         die_on_error $? "Could not create temporary e-mail file"
  66
  67         echo -e "To: $to\nFrom: $from" > $emailfile
  68         echo -e "Subject: $subject" >> $emailfile
  69         echo -e "Content-type: text/plain\n\n" >> $emailfile
  70         echo -e "$contents\n." >> $emailfile
  71
  72         cat $emailfile | $SENDMAIL -t
  73         ret=$?
  74
  75         rm -f $emailfile
  76
  77         return $ret
  78 }