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# ==== |
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# SSL/STARTTLS extention for Graham Barr's Net::POP3. |
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# plus, enable arbitrary POP auth mechanism selection. |
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# IO::Socket::SSL (also Net::SSLeay openssl), |
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# Authen::SASL, MIME::Base64 should be installed. |
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# |
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package Net::POP3S; |
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1
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1
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80993
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use vars qw ( $VERSION @ISA ); |
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$VERSION = '0.12'; |
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1
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use strict; |
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use base qw ( Net::POP3 ); |
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646
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102514
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use Net::Cmd; # import CMD_OK, CMD_MORE, ... |
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use Net::Config; |
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1319
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18
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eval { |
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require IO::Socket::IP |
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and unshift @ISA, 'IO::Socket::IP'; |
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} or eval { |
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require IO::Socket::INET6 |
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and unshift @ISA, 'IO::Socket::INET6'; |
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} or do { |
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require IO::Socket::INET |
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and unshift @ISA, 'IO::Socket::INET'; |
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}; |
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# Override to support SSL/TLS. |
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sub new { |
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my $self = shift; |
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0
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my $type = ref($self) || $self; |
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my ($host, %arg); |
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0
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0
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if (@_ % 2) { |
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0
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$host = shift; |
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0
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%arg = @_; |
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} |
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else { |
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0
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%arg = @_; |
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0
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$host = delete $arg{Host}; |
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} |
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0
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my $ssl = delete $arg{doSSL}; |
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0
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0
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if ($ssl =~ /ssl/i) { |
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0
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0
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$arg{Port} ||= 995; |
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} |
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47
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0
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0
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my $hosts = defined $host ? $host : $NetConfig{pop3_hosts}; |
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0
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my $obj; |
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50
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# eliminate IO::Socket::SSL from @ISA for multiple call of new. |
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0
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@ISA = grep { !/IO::Socket::SSL/ } @ISA; |
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52
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53
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0
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my %_args = map { +"$_" => $arg{$_} } grep {! /^SSL/} keys %arg; |
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0
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0
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54
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55
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0
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my $h; |
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0
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0
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$_args{PeerPort} = $_args{Port} || 'pop3(110)'; |
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0
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$_args{Proto} = 'tcp'; |
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0
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0
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$_args{Timeout} = defined $_args{Timeout} ? $_args{Timeout} : 120; |
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0
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0
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if (exists $_args{ResvPort}) { |
60
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0
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$_args{LocalPort} = delete $_args{ResvPort}; |
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} |
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63
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0
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0
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foreach $h (@{ref($hosts) ? $hosts : [$hosts]}) { |
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0
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64
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0
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$_args{PeerAddr} = ($host = $h); |
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66
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0
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0
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$obj = $type->SUPER::new( |
67
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%_args |
68
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) |
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and last; |
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} |
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72
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return undef |
73
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0
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0
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unless defined $obj; |
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75
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0
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${*$obj}{'net_pop3_host'} = $host; |
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0
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76
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77
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0
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$obj->autoflush(1); |
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79
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0
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0
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$obj->debug(exists $arg{Debug} ? $arg{Debug} : undef); |
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81
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0
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${*$obj}{'net_pop3_arg'} = \%arg; |
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0
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82
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83
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# OverSSL |
84
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0
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0
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0
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if (defined($ssl) && $ssl =~ /ssl/i) { |
85
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$obj->ssl_start() |
86
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0
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0
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or do { |
87
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0
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$obj->set_status(500, ["Cannot start SSL"]); |
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0
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$obj->close; |
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0
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return undef; |
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}; |
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} |
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93
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0
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0
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unless ($obj->response() == CMD_OK) { |
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0
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$obj->close(); |
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0
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return undef; |
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} |
97
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98
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0
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${*$obj}{'net_pop3_banner'} = $obj->message; |
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0
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99
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100
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# STARTTLS |
101
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0
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0
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0
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if (defined($ssl) && $ssl =~ /starttls|stls/i ) { |
102
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0
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0
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unless ($obj->starttls()) { |
103
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0
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return undef; |
104
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} |
105
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} |
106
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107
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0
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$obj; |
108
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} |
109
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110
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sub ssl_start { |
111
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0
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0
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0
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my $self = shift; |
112
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0
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my $type = ref($self); |
113
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0
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my %arg = %{ ${*$self}{'net_pop3_arg'} }; |
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0
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0
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114
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0
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my %ssl_args = map { +"$_" => $arg{$_} } grep {/^SSL/} keys %arg; |
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0
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0
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115
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116
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eval { |
117
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0
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require IO::Socket::SSL; |
118
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0
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0
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} or do { |
119
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0
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$self->set_status(500, ["Need working IO::Socket::SSL"]); |
120
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0
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$self->close; |
121
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0
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return undef; |
122
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}; |
123
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124
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0
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0
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my $ssl_debug = (exists $arg{Debug} ? $arg{Debug} : undef); |
125
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0
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0
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$ssl_debug = (exists $arg{Debug_SSL} ? $arg{Debug_SSL} : $ssl_debug); |
126
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127
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0
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local $IO::Socket::SSL::DEBUG = $ssl_debug; |
128
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129
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0
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0
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0
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(unshift @ISA, 'IO::Socket::SSL' |
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0
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0
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130
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and IO::Socket::SSL->start_SSL($self, %ssl_args, @_) |
131
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and $self->isa('IO::Socket::SSL') |
132
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and bless $self, $type # re-bless 'cause IO::Socket::SSL blesses himself. |
133
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) or return undef; |
134
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} |
135
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136
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sub starttls { |
137
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0
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0
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1
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my $self = shift; |
138
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0
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my $capa; |
139
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($capa = $self->capa |
140
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and exists $capa->{STLS} |
141
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and $self->_STLS() |
142
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and $self->ssl_start(@_) |
143
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0
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0
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0
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) or do { |
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0
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0
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144
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0
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$self->set_status(500, ["Cannot start SSL session"]); |
145
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0
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$self->close(); |
146
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0
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return undef; |
147
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}; |
148
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} |
149
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150
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sub capa { |
151
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0
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0
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1
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my $this = shift; |
152
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153
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0
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0
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if (exists ${*$this}{'net_pop3e_capabilities'}) { |
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0
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154
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0
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return ${*$this}{'net_pop3e_capabilities'}; |
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0
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155
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} |
156
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0
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$this->SUPER::capa(); |
157
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} |
158
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159
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# Override to specify a certain auth mechanism. |
160
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sub auth { |
161
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0
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0
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1
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my ($self, $username, $password, $mech) = @_; |
162
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163
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0
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0
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if ($mech) { |
164
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0
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0
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$self->debug_print(1, "my favorite: ". $mech . "\n") if $self->debug; |
165
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166
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0
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my @cl_mech = split /\s+/, $mech; |
167
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0
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my @matched = (); |
168
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0
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0
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my $sv = $self->capa->{SASL} || 'CRAM-MD5'; |
169
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170
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0
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foreach my $i (@cl_mech) { |
171
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0
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0
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0
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if (index($sv, $i) >= 0 && !grep(/$i/i, @matched)) { |
172
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0
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push @matched, uc($i); |
173
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} |
174
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} |
175
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0
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0
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if (@matched) { |
176
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## override AUTH mech as specified. |
177
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## if multiple mechs are specified, priority is still up to Authen::SASL module. |
178
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0
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${*$self}{'net_pop3e_capabilities'}->{'SASL'} = join " ", @matched; |
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0
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179
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} |
180
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} |
181
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0
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$self->SUPER::auth($username, $password); |
182
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} |
183
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184
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0
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0
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sub _STLS { shift->command("STLS")->response() == CMD_OK } |
185
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186
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1; |
187
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188
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__END__ |