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Full Discussion: Infinite looping in script
Top Forums Shell Programming and Scripting Infinite looping in script Post 302858891 by anshu ranjan on Tuesday 1st of October 2013 03:06:41 PM
Old 10-01-2013
Infinite looping in script
we have one script which we use to send mail in our environment. If we are giving correct attachment script runs fine but if we give a attachment name which is not present on server then this script go to infinite loop and causing all memory to be used. could any one please suggest me what is wrong

below is the portion of script where attachment condition is defined.

Code:
#==========================================
#  Validate the passed arguments
#

attach_total_size=0
n=0
while [[ $n -lt ${#PASSED_ATTACHMENTS[*]} ]];
do
   if [[ ! -r ${PASSED_ATTACHMENTS[$n]} ]];
   then
      invalid_attachments="$invalid_attachments ${PASSED_ATTACHMENTS[$n]}"
      continue
   else
      size=$(ls -al ${PASSED_ATTACHMENTS[$n]} | awk '{print $5}')
      (( attach_total_size = attach_total_size + size ))
   fi
   (( n = n + 1 ))
done

# Check if the size of overall attachments doesn't exceed Limit (2MB=2097152Byte)
if [[ $attach_total_size -gt $ATTACH_SIZE_LIMIT ]] ;
then
   msg "Attachment(s) not included due to the size larger than 2MB."
   ret_val2=$ERR_ATTACHMENT
elif [[ -n ${invalid_attachments} ]];
then
   msg "Attachment(s), ${invalid_attachments}, not found. Aborting."
   return $ERR_INVALID_VALUE
fi

when we use wrong attachment (attachment is not present) then scripts goes to infinite loop. below is the O/P of debugging mode. in below example "/home/auto/anshu/attccc" is the file name which is not present on server.

Code:
+ attach_total_size=0
+ n=0
+ [[ 0 -lt 1 ]]
+ [[ ! -r /home/auto/anshu/attccc ]]
+ invalid_attachments=' /home/auto/anshu/attccc'
+ continue
+ [[ 0 -lt 1 ]]
+ [[ ! -r /home/auto/anshu/attccc ]]
+ invalid_attachments=' /home/auto/anshu/attccc /home/auto/anshu/attccc'
+ continue
+ [[ 0 -lt 1 ]]
+ [[ ! -r /home/auto/anshu/attccc ]]
+ invalid_attachments=' /home/auto/anshu/attccc /home/auto/anshu/attccc /home/auto/anshu/attccc'
+ continue
+ [[ 0 -lt 1 ]]
+ [[ ! -r /home/auto/anshu/attccc ]]
+ invalid_attachments=' /home/auto/anshu/attccc /home/auto/anshu/attccc /home/auto/anshu/attccc /home/auto/anshu/attccc'
+ continue

Last edited by Neo; 10-01-2013 at 04:24 PM.. Reason: Changed icode tags to code tags
 

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LEARN ABOUT CENTOS

sieveshell

SIEVESHELL(1)						User Contributed Perl Documentation					     SIEVESHELL(1)

NAME

       sieveshell - remotely manipulate sieve scripts

SYNOPSIS

       sieveshell [--user=user] [--authname=authname] [--realm=realm] [--exec=script] server[:port]

       sieveshell --help

DESCRIPTION

       sieveshell allows users to manipulate their scripts on a remote server.	It works via MANAGESIEVE, a work in progress.

       The following commands are recognized:

	   list list scripts on server.

	   put <filename> upload script to server.

	   get <name> [<filename>] get script. if no filename display to stdout

	   delete <name> delete script.

	   activate <name> activate script.

	   deactivate deactivate all scripts.

OPTIONS

       -u user, --user=user
	   The authorization name to request; by default, derived from the authentication credentials.

       -a authname, --authname=authname
	   The user to use for authentication (defaults to current user).

       -r realm, --realm=realm
	   The realm to attempt authentication in.

       -e script, --exec=script
	   Instead of working interactively, run commands from script, and exit when done.

REFERENCES

       [MANAGESIEVE] Martin, T.; "A Protocol for Remotely Managing Sieve Scripts", draft-ietf-managesieve-03.txt, Mirapoint, Inc.; May 2001, work
       in progress.

AUTHOR

       Tim Martin <tmartin@mirapoint.com>, and the rest of the Cyrus team <cyrus-bugs@andrew.cmu.edu>.

perl v5.16.3							    2014-06-10							     SIEVESHELL(1)
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