代码笔记 | Perl生成随机生成密码

来源：互联网发布：java程序设计步骤编辑：程序博客网时间：2024/05/01 00:54
 #!/usr/bin/perluse strict;use warnings;use Getopt::Std;sub show_help {    print "Useage:\\n";    print "newp -aAnsl\\n";    print "-a\\t\\t the password contains lower case letters(a-z)\\n";    print "-A\\t\\t the password contains upper case letters(A-Z)\\n";    print "-n\\t\\t the password contains numerical character(0-9)\\n";    print "-s\\t\\t the password contains special symbols\\n";    print "-u\\t\\t the password contains only unique characters\\n";    print "-l length\\t set the password length(default: 6)\\n";    exit 0;}sub show_version {    print "Version: 0.2.1 Changed the default option: -l 9 -Ana. 2016-4-15\\n";    exit 0;}### main programuse vars qw($opt_a $opt_A $opt_h $opt_l $opt_n $opt_s $opt_u $opt_v);getopts('aAhl:nsuv');&show_version if $opt_v;&show_help if $opt_h;my $len = $opt_l || 9;    # default length 9my $opt_cnt = 0;my @rand_str = ();# store all the charactersmy @num = qw(0 1 2 3 4 5 6 7 8 9);my @ABC = qw(A B C D E F G H I J K L M N O P Q R S T U V W X Y Z);my @abc = qw(a b c d e f g h i j k l m n o p q r s t u v w x y z);# my @sym = qw(! " $ % & ' * + - . / : ; < = > ? @ [ \\ ] ^ _ ` { | } ~);my @sym = qw(! $ % & * + - . / : ; < = > ? @ [ ] ^ _ ` { | } ~); # no " ' \\unshift (@sym, '(', ')', '#', ','); # to prevent perl's complains or warnings.my @all_sym = (@num, @ABC, @abc, @sym);my @ch_src = ();if ((!$opt_a) && (!$opt_A) && (!$opt_n) && (!$opt_s)) {    $opt_a++;    $opt_A++;    $opt_n++;}if ($opt_a) {    $opt_cnt++;    my $i = rand @abc;    unshift @rand_str, $abc[$i];    if ($opt_u) {        if ($i>=1) {            $abc[$i-1] = shift @abc;        } else {            shift @abc;        }    }    unshift (@ch_src, @abc);}if ($opt_A) {    $opt_cnt++;    my $i = rand @ABC;    unshift @rand_str, $ABC[$i];    if ($opt_u) {        if ($i>=1) {            $ABC[$i-1] = shift @ABC;        } else {            shift @ABC;        }    }    unshift (@ch_src, @ABC);}if ($opt_n) {    $opt_cnt++;    my $i = rand @num;    unshift @rand_str, $num[$i];    if ($opt_u) {        if ($i>=1) {            $num[$i-1] = shift @num;        } else {            shift @num;        }    }    unshift (@ch_src, @num);}if ($opt_s) {    $opt_cnt++;    my $i = rand @sym;    unshift @rand_str, $sym[$i];    if ($opt_u) {        if ($i>=1) {            $sym[$i-1] = shift @sym;        } else {            shift @sym;        }    }    unshift (@ch_src, @sym);}if ($len < $opt_cnt) {    print "The count of characters[$len] should not be smaller " .          "than count of character types[$opt_cnt].\\n";    exit -1;}if ($opt_u && $len > (@ch_src + @rand_str)) {    print "The total number of characters[".(@ch_src + @rand_str).          "] which could be contained " .          "in password is smaller than the length[$len] of it.\\n";    exit -1;}foreach (1..$len-$opt_cnt) {    my $i = rand @ch_src;    unshift @rand_str, $ch_src[$i];    if ($opt_u) {        if ($i>=1) {            $ch_src[$i-1] = shift @ch_src;        } else {            shift @ch_src;        }    }}foreach (1..$len) {    my $i = rand @rand_str;    print $rand_str[$i];    if ($i>=1) {        $rand_str[$i-1] = shift @rand_str;    } else {        shift @rand_str;    }}print "\\n";exit 0;
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