unitproc/bktemp-validateInput

   1 #!/bin/bash
   2 # Desc: Validates Input
   3
   4 yell() { echo "$0: $*" >&2; }      #o Yell, Die, Try Three-Fingered Claw technique
   5 die() { yell "$*"; exit 111; }     #o Ref/Attrib: https://stackoverflow.com/a/25515370
   6 try() { "$@" || die "cannot $*"; } #o
   7 validateInput() {
   8     # Desc: Validates Input
   9     # Usage: validateInput [str input] [str input type]
  10     # Version: 0.1.0
  11     # Input: arg1: string to validate
  12     #        arg2: string specifying input type (ex:"ssh_pubkey")
  13     # Output: return code 0: if input string matched specified string type
  14     # Depends: bash 5, yell
  15
  16     # Save function name
  17     local FN="${FUNCNAME[0]}";
  18
  19     # Process arguments
  20     argInput="$1";
  21     argType="$2";
  22     if [[ $# -gt 2 ]]; then yell "ERROR:$0:$FN:Too many arguments."; exit 1; fi;
  23
  24     # Check for blank
  25     if [[ -z "$argInput" ]]; then return 1; fi
  26
  27     # Define input types
  28     ## ssh_pubkey
  29     ### Check for alnum/dash base64 (ex: "ssh-rsa AAAAB3NzaC1yc2EAAA")
  30     if [[ "$argType" = "ssh_pubkey" ]] && [[ "$argInput" =~ ^[[:alnum:]-]*[\ ]*[[:alnum:]+/=]*$ ]]; then
  31         return 0; fi;
  32
  33     # Return error if no condition matched.
  34     return 1;
  35 }
  36
  37 #==BEGIN sample code==
  38 testKey1="ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCq8G0XWi8A+MXNu7MEaxDsZJUwtgPC4shGAAarXC4PQTRxLfUHtyWkNbzGh31U/bKI3Snp1O78yOVEZSjdmWkDvkwtWKJQcoZBStgqw9oIPE0oG8uh49XoX77nVabi0JCf8zO63Ai4/9EdwyqE9xsJ+soOYt2V5+UCj0zsv1xpt2YhfYyXrzBv9x6k9lCxy0NW3Ik1mSW+OzSOT3tgDf36ujV/CI2i8ERM9civWy8FtFOReZMV2kkbj7fXI4E1wKM1RFIn7er1MseCSvbvh3o2uCO46/euqHAstYs5cL+4yB2qM/xKfHT5aocDjq7GBLKtree9xdNF0EE9CNr/+J5R";
  39 testKey2="blah-blah onetwothreeREEE";
  40 testKey3="";
  41 keyType="ssh_pubkey";
  42 if validateInput "$testKey1" "$keyType"; then echo "$testKey1 looks like a valid $keyType."; else echo "$testKey1 doesn't look like a valid $keyType."; fi
  43 if validateInput "$testKey2" "$keyType"; then echo "$testKey2 looks like a valid $keyType."; else echo "$testKey2 doesn't look like a valid $keyType."; fi
  44 if validateInput "$testKey3" "$keyType"; then echo "$testKey3 looks like a valid $keyType."; else echo "$testKey3 doesn't look like a valid $keyType."; fi
  45 #==END sample code==
  46
  47
  48
  49
  50 # Author: Steven Baltakatei Sandoval (bktei.com)
  51 # License: GPLv3+