line |
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cond |
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code |
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# We're currently waiting on UUID::Tiny 1.02 or newer for the new API |
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3
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package Prophet::TempUUIDTiny; |
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5
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40
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918
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use 5.008; |
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107
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6
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use warnings; |
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58
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40
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1147
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7
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166
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use strict; |
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56
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40
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801
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302
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use Carp; |
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94
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2781
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use Digest::MD5; |
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40
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1356
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176
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use MIME::Base64; |
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1802
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23408
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use Time::HiRes; |
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51652
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169
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26152
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use POSIX; |
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238818
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250
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our $SHA1_CALCULATOR = undef; |
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{ |
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# Check for availability of SHA-1 ... |
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local $@; # don't leak an error condition |
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eval { require Digest::SHA; $SHA1_CALCULATOR = Digest::SHA->new(1)} || |
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eval { require Digest::SHA1; $SHA1_CALCULATOR = Digest::SHA1->new() } || |
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eval { require Digest::SHA::PurePerl; $SHA1_CALCULATOR = Digest::SHA::PurePerl->new(1)}; |
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}; |
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our $MD5_CALCULATOR = Digest::MD5->new(); |
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=head1 NAME |
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UUID::Tiny - Pure Perl UUID Support With Functional Interface |
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33
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=head1 VERSION |
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35
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Version 1.01_06 |
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37
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=cut |
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our $VERSION = '1.01_06'; |
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41
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42
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=head1 SYNOPSIS |
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44
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Create version 1, 3, 4 and 5 UUIDs: |
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46
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use UUID::Tiny; |
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48
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my $v1_mc_UUID = create_UUID(); |
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my $v3_md5_UUID = create_UUID(UUID_V3, $str); |
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my $v3_md5_UUID = create_UUID(UUID_V3, UUID_NS_DNS, 'caugustin.de'); |
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my $v4_rand_UUID = create_UUID(UUID_V4); |
52
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my $v5_sha1_UUID = create_UUID(UUID_V5, $str); |
53
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my $v5_with_NS_UUID = create_UUID(UUID_V5, UUID_NS_DNS, 'caugustin.de'); |
54
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55
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my $v1_mc_UUID_string = create_UUID_as_string(UUID_V1); |
56
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my $v3_md5_UUID_string = UUID_to_string($v3_md5_UUID); |
57
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58
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if ( version_of_UUID($v1_mc_UUID) == 1 ) { ... }; |
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if ( version_of_UUID($v5_sha1_UUID) == 5 ) { ... }; |
60
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if ( is_UUID_string($v1_mc_UUID_string) ) { ... }; |
61
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if ( equal_UUIDs($uuid1, $uuid2) ) { ... }; |
62
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63
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my $uuid_time = time_of_UUID($v1_mc_UUID); |
64
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my $uuid_clk_seq = clk_seq_of_UUID($v1_mc_UUID); |
65
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66
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=cut |
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68
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69
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=head1 DESCRIPTION |
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71
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UUID::Tiny is a lightweight, low dependency Pure Perl module for UUID |
72
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creation and testing. This module provides the creation of version 1 time |
73
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based UUIDs (using random multicast MAC addresses), version 3 MD5 based UUIDs, |
74
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version 4 random UUIDs, and version 5 SHA-1 based UUIDs. |
75
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76
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No fancy OO interface, no plethora of different UUID representation formats |
77
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and transformations - just string and binary. Conversion, test and time |
78
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functions equally accept UUIDs and UUID strings, so don't bother to convert |
79
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UUIDs for them! |
80
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81
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All constants and public functions are exported by default, because if you |
82
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didn't need/want them, you wouldn't use this module ... |
83
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84
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UUID::Tiny deliberately uses a minimal functional interface for UUID creation |
85
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(and conversion/testing), because in this case OO looks like overkill to me |
86
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and makes the creation and use of UUIDs unnecessarily complicated. |
87
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88
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If you need raw performance for UUID creation, or the real MAC address in |
89
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version 1 UUIDs, or an OO interface, and if you can afford module compilation |
90
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and installation on the target system, then better look at other CPAN UUID |
91
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modules like L. |
92
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93
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This module should be thread save, because the (necessary) global variables |
94
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are locked in the functions that access them. (Not tested.) |
95
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96
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=cut |
97
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98
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99
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=head1 DEPENDENCIES |
100
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101
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This module should run from Perl 5.8 up and uses mostly standard (5.8 core) |
102
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modules for its job. No compilation or installation required. These are the |
103
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modules UUID::Tiny depends on: |
104
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105
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Carp |
106
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Digest::MD5 Perl 5.8 core |
107
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Digest::SHA Perl 5.10 core (OR Digest::SHA1 OR Digest::SHA::PurePerl) |
108
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MIME::Base64 Perl 5.8 core |
109
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Time::HiRes Perl 5.8 core |
110
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POSIX Perl 5.8 core |
111
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112
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=cut |
113
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114
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115
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=head1 ATTENTION! NEW STANDARD INTERFACE (IN PREPARATION FOR V2.00) |
116
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117
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After some debate I'm convinced that it is more Perlish (and far easier to |
118
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write) to use all-lowercase function names - without exceptions. And that it |
119
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is more polite to export symbols only on demand. |
120
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121
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While the 1.0x versions will continue to export the old, "legacy" interface on |
122
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default, the future standard interface is available using the C<:std> tag on |
123
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import from version 1.02 on: |
124
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125
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use UUID::Tiny ':std'; |
126
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my $md5_uuid = create_uuid(UUID_MD5, $str); |
127
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128
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In preparation for the upcoming version 2.00 of UUID::Tiny you should use the |
129
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C<:legacy> tag if you want to stay with the version 1.0x interface: |
130
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131
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use UUID::Tiny ':legacy'; |
132
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my $md5_uuid = create_UUID(UUID_V3, $str); |
133
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134
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=cut |
135
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136
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40
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40
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108229
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use Exporter; |
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40
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75
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40
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6250
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137
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our @ISA = qw(Exporter); |
138
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our @EXPORT; |
139
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our @EXPORT_OK; |
140
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our %EXPORT_TAGS = ( |
141
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std => [qw( |
142
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UUID_NIL |
143
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UUID_NS_DNS UUID_NS_URL UUID_NS_OID UUID_NS_X500 |
144
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UUID_V1 UUID_TIME |
145
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UUID_V3 UUID_MD5 |
146
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UUID_V4 UUID_RANDOM |
147
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UUID_V5 UUID_SHA1 |
148
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UUID_SHA1_AVAIL |
149
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create_uuid create_uuid_as_string |
150
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is_uuid_string |
151
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uuid_to_string string_to_uuid |
152
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version_of_uuid time_of_uuid clk_seq_of_uuid |
153
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equal_uuids |
154
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)], |
155
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legacy => [qw( |
156
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UUID_NIL |
157
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UUID_NS_DNS UUID_NS_URL UUID_NS_OID UUID_NS_X500 |
158
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UUID_V1 |
159
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UUID_V3 |
160
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UUID_V4 |
161
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UUID_V5 |
162
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UUID_SHA1_AVAIL |
163
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create_UUID create_UUID_as_string |
164
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is_UUID_string |
165
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UUID_to_string string_to_UUID |
166
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version_of_UUID time_of_UUID clk_seq_of_UUID |
167
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equal_UUIDs |
168
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)], |
169
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); |
170
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171
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Exporter::export_tags('legacy'); |
172
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Exporter::export_ok_tags('std'); |
173
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174
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175
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=head1 CONSTANTS |
176
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177
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=cut |
178
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179
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=over 4 |
180
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181
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=item B |
182
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183
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This module provides the NIL UUID (shown with its string representation): |
184
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185
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UUID_NIL: '00000000-0000-0000-0000-000000000000' |
186
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187
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=cut |
188
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189
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40
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40
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215
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use constant UUID_NIL => "\x00" x 16; |
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40
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55
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40
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3561
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190
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191
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192
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=item B |
193
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194
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This module provides the common pre-defined namespace UUIDs (shown with their |
195
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string representation): |
196
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197
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UUID_NS_DNS: '6ba7b810-9dad-11d1-80b4-00c04fd430c8' |
198
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UUID_NS_URL: '6ba7b811-9dad-11d1-80b4-00c04fd430c8' |
199
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UUID_NS_OID: '6ba7b812-9dad-11d1-80b4-00c04fd430c8' |
200
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UUID_NS_X500: '6ba7b814-9dad-11d1-80b4-00c04fd430c8' |
201
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202
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=cut |
203
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204
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40
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2144
|
use constant UUID_NS_DNS => |
205
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40
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40
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188
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"\x6b\xa7\xb8\x10\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8"; |
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40
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57
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206
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40
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2092
|
use constant UUID_NS_URL => |
207
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40
|
|
|
40
|
|
166
|
"\x6b\xa7\xb8\x11\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8"; |
|
40
|
|
|
|
|
59
|
|
208
|
40
|
|
|
|
|
2043
|
use constant UUID_NS_OID => |
209
|
40
|
|
|
40
|
|
168
|
"\x6b\xa7\xb8\x12\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8"; |
|
40
|
|
|
|
|
52
|
|
210
|
40
|
|
|
|
|
1905
|
use constant UUID_NS_X500 => |
211
|
40
|
|
|
40
|
|
168
|
"\x6b\xa7\xb8\x14\x9d\xad\x11\xd1\x80\xb4\x00\xc0\x4f\xd4\x30\xc8"; |
|
40
|
|
|
|
|
63
|
|
212
|
|
|
|
|
|
|
|
213
|
|
|
|
|
|
|
|
214
|
|
|
|
|
|
|
=item B |
215
|
|
|
|
|
|
|
|
216
|
|
|
|
|
|
|
This module provides the UUID version numbers as constants: |
217
|
|
|
|
|
|
|
|
218
|
|
|
|
|
|
|
UUID_V1 |
219
|
|
|
|
|
|
|
UUID_V3 |
220
|
|
|
|
|
|
|
UUID_V4 |
221
|
|
|
|
|
|
|
UUID_V5 |
222
|
|
|
|
|
|
|
|
223
|
|
|
|
|
|
|
With C |
224
|
|
|
|
|
|
|
|
225
|
|
|
|
|
|
|
UUID_TIME |
226
|
|
|
|
|
|
|
UUID_MD5 |
227
|
|
|
|
|
|
|
UUID_RANDOM |
228
|
|
|
|
|
|
|
UUID_SHA1 |
229
|
|
|
|
|
|
|
|
230
|
|
|
|
|
|
|
=cut |
231
|
|
|
|
|
|
|
|
232
|
40
|
|
|
40
|
|
172
|
use constant UUID_V1 => 1; use constant UUID_TIME => 1; |
|
40
|
|
|
40
|
|
60
|
|
|
40
|
|
|
|
|
1807
|
|
|
40
|
|
|
|
|
217
|
|
|
40
|
|
|
|
|
53
|
|
|
40
|
|
|
|
|
1782
|
|
233
|
40
|
|
|
40
|
|
173
|
use constant UUID_V3 => 3; use constant UUID_MD5 => 3; |
|
40
|
|
|
40
|
|
50
|
|
|
40
|
|
|
|
|
1848
|
|
|
40
|
|
|
|
|
166
|
|
|
40
|
|
|
|
|
53
|
|
|
40
|
|
|
|
|
1700
|
|
234
|
40
|
|
|
40
|
|
167
|
use constant UUID_V4 => 4; use constant UUID_RANDOM => 4; |
|
40
|
|
|
40
|
|
56
|
|
|
40
|
|
|
|
|
1569
|
|
|
40
|
|
|
|
|
161
|
|
|
40
|
|
|
|
|
56
|
|
|
40
|
|
|
|
|
1629
|
|
235
|
40
|
|
|
40
|
|
187
|
use constant UUID_V5 => 5; use constant UUID_SHA1 => 5; |
|
40
|
|
|
40
|
|
51
|
|
|
40
|
|
|
|
|
1680
|
|
|
40
|
|
|
|
|
161
|
|
|
40
|
|
|
|
|
54
|
|
|
40
|
|
|
|
|
4210
|
|
236
|
|
|
|
|
|
|
|
237
|
|
|
|
|
|
|
|
238
|
|
|
|
|
|
|
=item B |
239
|
|
|
|
|
|
|
|
240
|
|
|
|
|
|
|
my $uuid = create_UUID( UUID_SHA1_AVAIL? UUID_V5 : UUID_V3, $str ); |
241
|
|
|
|
|
|
|
|
242
|
|
|
|
|
|
|
This function returns a positive value if a module to create SHA-1 digests |
243
|
|
|
|
|
|
|
could be loaded, 0 otherwise. |
244
|
|
|
|
|
|
|
|
245
|
|
|
|
|
|
|
UUID::Tiny (since version 1.02) tries to load |
246
|
|
|
|
|
|
|
Digest::SHA (1), Digest::SHA1 (2) or Digest::SHA::PurePerl (3), but does not |
247
|
|
|
|
|
|
|
die if none of them is found. Instead C and |
248
|
|
|
|
|
|
|
C die when trying to create an SHA-1 based UUID |
249
|
|
|
|
|
|
|
without an appropriate module available. |
250
|
|
|
|
|
|
|
|
251
|
|
|
|
|
|
|
=cut |
252
|
|
|
|
|
|
|
|
253
|
|
|
|
|
|
|
sub UUID_SHA1_AVAIL { |
254
|
0
|
0
|
|
0
|
1
|
|
return defined $SHA1_CALCULATOR ? 1 :0; |
255
|
|
|
|
|
|
|
} |
256
|
|
|
|
|
|
|
|
257
|
|
|
|
|
|
|
=back |
258
|
|
|
|
|
|
|
|
259
|
|
|
|
|
|
|
=cut |
260
|
|
|
|
|
|
|
|
261
|
|
|
|
|
|
|
=head1 FUNCTIONS |
262
|
|
|
|
|
|
|
|
263
|
|
|
|
|
|
|
All public functions are exported by default (they should not collide with |
264
|
|
|
|
|
|
|
other functions). |
265
|
|
|
|
|
|
|
|
266
|
|
|
|
|
|
|
C creates standard binary UUIDs in network byte order |
267
|
|
|
|
|
|
|
(MSB first), C creates the standard string |
268
|
|
|
|
|
|
|
represantion of UUIDs. |
269
|
|
|
|
|
|
|
|
270
|
|
|
|
|
|
|
All query and test functions (except C) accept both |
271
|
|
|
|
|
|
|
representations. |
272
|
|
|
|
|
|
|
|
273
|
|
|
|
|
|
|
=over 4 |
274
|
|
|
|
|
|
|
|
275
|
|
|
|
|
|
|
=cut |
276
|
|
|
|
|
|
|
|
277
|
|
|
|
|
|
|
=item B, B (:std) |
278
|
|
|
|
|
|
|
|
279
|
|
|
|
|
|
|
my $v1_mc_UUID = create_UUID(); |
280
|
|
|
|
|
|
|
my $v1_mc_UUID = create_UUID(UUID_V1); |
281
|
|
|
|
|
|
|
my $v3_md5_UUID = create_UUID(UUID_V3, $ns_uuid, $name_or_filehandle); |
282
|
|
|
|
|
|
|
my $v3_md5_UUID = create_UUID(UUID_V3, $name_or_filehandle); |
283
|
|
|
|
|
|
|
my $v4_rand_UUID = create_UUID(UUID_V4); |
284
|
|
|
|
|
|
|
my $v5_sha1_UUID = create_UUID(UUID_V5, $ns_uuid $name_or_filehandle); |
285
|
|
|
|
|
|
|
my $v5_sha1_UUID = create_UUID(UUID_V5, $name_or_filehandle); |
286
|
|
|
|
|
|
|
|
287
|
|
|
|
|
|
|
Creates a binary UUID in network byte order (MSB first). For v3 and v5 UUIDs a |
288
|
|
|
|
|
|
|
C (normally a string), C ("classic" file handle) or C object |
289
|
|
|
|
|
|
|
(i.e. C) can be used; files have to be opened for reading. |
290
|
|
|
|
|
|
|
|
291
|
|
|
|
|
|
|
I found no hint if and how UUIDs should be created from file content. It seems |
292
|
|
|
|
|
|
|
to be undefined, but it is useful - so I would suggest to use UUID_NIL as the |
293
|
|
|
|
|
|
|
namespace UUID, because no "real name" is used; UUID_NIL is used by default if |
294
|
|
|
|
|
|
|
a namespace UUID is missing (only 2 arguments are used). |
295
|
|
|
|
|
|
|
|
296
|
|
|
|
|
|
|
=cut |
297
|
|
|
|
|
|
|
|
298
|
|
|
|
|
|
|
sub create_uuid { |
299
|
40
|
|
|
40
|
|
28199
|
use bytes; |
|
40
|
|
|
|
|
389
|
|
|
40
|
|
|
|
|
198
|
|
300
|
0
|
|
0
|
0
|
1
|
|
my ($v, $arg2, $arg3) = (shift || UUID_V1, shift, shift); |
301
|
0
|
|
|
|
|
|
my $uuid = UUID_NIL; |
302
|
0
|
0
|
|
|
|
|
my $ns_uuid = string_to_uuid(defined $arg3 ? $arg2 : UUID_NIL); |
303
|
0
|
0
|
|
|
|
|
my $name = defined $arg3 ? $arg3 : $arg2; |
304
|
|
|
|
|
|
|
|
305
|
0
|
0
|
|
|
|
|
if ($v == UUID_V1) { |
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
306
|
0
|
|
|
|
|
|
$uuid = _create_v1_uuid(); |
307
|
|
|
|
|
|
|
} |
308
|
|
|
|
|
|
|
elsif ($v == UUID_V3 ) { |
309
|
0
|
|
|
|
|
|
$uuid = _create_v3_uuid($ns_uuid, $name); |
310
|
|
|
|
|
|
|
} |
311
|
|
|
|
|
|
|
elsif ($v == UUID_V4) { |
312
|
0
|
|
|
|
|
|
$uuid = _create_v4_uuid(); |
313
|
|
|
|
|
|
|
} |
314
|
|
|
|
|
|
|
elsif ($v == UUID_V5) { |
315
|
0
|
|
|
|
|
|
$uuid = _create_v5_uuid($ns_uuid, $name); |
316
|
|
|
|
|
|
|
} |
317
|
|
|
|
|
|
|
else { |
318
|
0
|
|
|
|
|
|
croak __PACKAGE__ . "::create_uuid(): Invalid UUID version '$v'!"; |
319
|
|
|
|
|
|
|
} |
320
|
|
|
|
|
|
|
|
321
|
|
|
|
|
|
|
# Set variant 2 in UUID ... |
322
|
0
|
|
|
|
|
|
substr $uuid, 8, 1, chr(ord(substr $uuid, 8, 1) & 0x3f | 0x80); |
323
|
|
|
|
|
|
|
|
324
|
0
|
|
|
|
|
|
return $uuid; |
325
|
|
|
|
|
|
|
} |
326
|
|
|
|
|
|
|
*create_UUID = \&create_uuid; |
327
|
|
|
|
|
|
|
|
328
|
|
|
|
|
|
|
sub _create_v1_uuid { |
329
|
0
|
|
|
0
|
|
|
my $uuid = ''; |
330
|
|
|
|
|
|
|
|
331
|
|
|
|
|
|
|
# Create time and clock sequence ... |
332
|
0
|
|
|
|
|
|
my $timestamp = Time::HiRes::time(); |
333
|
0
|
|
|
|
|
|
my $clk_seq = _get_clk_seq($timestamp); |
334
|
|
|
|
|
|
|
|
335
|
|
|
|
|
|
|
# hi = time mod (1000000 / 0x100000000) |
336
|
0
|
|
|
|
|
|
my $hi = floor( $timestamp / 65536.0 / 512 * 78125 ); |
337
|
0
|
|
|
|
|
|
$timestamp -= $hi * 512.0 * 65536 / 78125; |
338
|
0
|
|
|
|
|
|
my $low = floor( $timestamp * 10000000.0 + 0.5 ); |
339
|
|
|
|
|
|
|
|
340
|
|
|
|
|
|
|
# MAGIC offset: 01B2-1DD2-13814000 |
341
|
0
|
0
|
|
|
|
|
if ( $low < 0xec7ec000 ) { |
342
|
0
|
|
|
|
|
|
$low += 0x13814000; |
343
|
|
|
|
|
|
|
} else { |
344
|
0
|
|
|
|
|
|
$low -= 0xec7ec000; |
345
|
0
|
|
|
|
|
|
$hi++; |
346
|
|
|
|
|
|
|
} |
347
|
|
|
|
|
|
|
|
348
|
0
|
0
|
|
|
|
|
if ( $hi < 0x0e4de22e ) { |
349
|
0
|
|
|
|
|
|
$hi += 0x01b21dd2; |
350
|
|
|
|
|
|
|
} else { |
351
|
0
|
|
|
|
|
|
$hi -= 0x0e4de22e; # wrap around |
352
|
|
|
|
|
|
|
} |
353
|
|
|
|
|
|
|
|
354
|
|
|
|
|
|
|
# Set time in UUID ... |
355
|
0
|
|
|
|
|
|
substr $uuid, 0, 4, pack( 'N', $low ); # set time low |
356
|
0
|
|
|
|
|
|
substr $uuid, 4, 2, pack( 'n', $hi & 0xffff ); # set time mid |
357
|
0
|
|
|
|
|
|
substr $uuid, 6, 2, pack( 'n', ( $hi >> 16 ) & 0x0fff ); # set time high |
358
|
|
|
|
|
|
|
|
359
|
|
|
|
|
|
|
# Set clock sequence in UUID ... |
360
|
0
|
|
|
|
|
|
substr $uuid, 8, 2, pack( 'n', $clk_seq ); |
361
|
|
|
|
|
|
|
|
362
|
|
|
|
|
|
|
# Set random node in UUID ... |
363
|
0
|
|
|
|
|
|
substr $uuid, 10, 6, _random_node_id(); |
364
|
|
|
|
|
|
|
|
365
|
0
|
|
|
|
|
|
return _set_uuid_version($uuid => 0x10); |
366
|
|
|
|
|
|
|
} |
367
|
|
|
|
|
|
|
|
368
|
|
|
|
|
|
|
sub _create_v3_uuid { |
369
|
0
|
|
|
0
|
|
|
my $ns_uuid = shift; |
370
|
0
|
|
|
|
|
|
my $name = shift; |
371
|
0
|
|
|
|
|
|
my $uuid = ''; |
372
|
|
|
|
|
|
|
|
373
|
|
|
|
|
|
|
# Create digest in UUID ... |
374
|
0
|
|
|
|
|
|
$MD5_CALCULATOR->reset(); |
375
|
0
|
|
|
|
|
|
$MD5_CALCULATOR->add($ns_uuid); |
376
|
|
|
|
|
|
|
|
377
|
0
|
0
|
|
|
|
|
if ( ref($name) =~ m/^(?:GLOB|IO::)/ ) { |
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
378
|
0
|
|
|
|
|
|
$MD5_CALCULATOR->addfile($name); |
379
|
|
|
|
|
|
|
} elsif ( ref $name ) { |
380
|
0
|
|
|
|
|
|
croak __PACKAGE__ . '::create_uuid(): Name for v3 UUID' . ' has to be SCALAR, GLOB or IO object, not '.ref($name).'!'; |
381
|
|
|
|
|
|
|
} elsif ( defined $name ) { |
382
|
0
|
|
|
|
|
|
$MD5_CALCULATOR->add($name); |
383
|
|
|
|
|
|
|
} else { |
384
|
0
|
|
|
|
|
|
croak __PACKAGE__ . '::create_uuid(): Name for v3 UUID is not defined!'; |
385
|
|
|
|
|
|
|
} |
386
|
|
|
|
|
|
|
|
387
|
0
|
|
|
|
|
|
$uuid = substr( $MD5_CALCULATOR->digest(), 0, 16 ); # Use only first 16 Bytes |
388
|
|
|
|
|
|
|
|
389
|
0
|
|
|
|
|
|
return _set_uuid_version( $uuid => 0x30 ); |
390
|
|
|
|
|
|
|
} |
391
|
|
|
|
|
|
|
|
392
|
|
|
|
|
|
|
sub _create_v4_uuid { |
393
|
|
|
|
|
|
|
|
394
|
|
|
|
|
|
|
# Create random value in UUID ... |
395
|
0
|
|
|
0
|
|
|
my $uuid = ''; |
396
|
0
|
|
|
|
|
|
for ( 1 .. 4 ) { |
397
|
0
|
|
|
|
|
|
$uuid .= pack 'I', _rand_32bit(); |
398
|
|
|
|
|
|
|
} |
399
|
|
|
|
|
|
|
|
400
|
0
|
|
|
|
|
|
return _set_uuid_version($uuid => 0x40); |
401
|
|
|
|
|
|
|
} |
402
|
|
|
|
|
|
|
|
403
|
|
|
|
|
|
|
sub _create_v5_uuid { |
404
|
0
|
|
|
0
|
|
|
my $ns_uuid = shift; |
405
|
0
|
|
|
|
|
|
my $name = shift; |
406
|
0
|
|
|
|
|
|
my $uuid = ''; |
407
|
|
|
|
|
|
|
|
408
|
0
|
0
|
|
|
|
|
if (!$SHA1_CALCULATOR) { |
409
|
0
|
|
|
|
|
|
croak __PACKAGE__ |
410
|
|
|
|
|
|
|
. '::create_uuid(): No SHA-1 implementation available! ' |
411
|
|
|
|
|
|
|
. 'Please install Digest::SHA1, Digest::SHA or ' |
412
|
|
|
|
|
|
|
. 'Digest::SHA::PurePerl to use SHA-1 based UUIDs.'; |
413
|
|
|
|
|
|
|
} |
414
|
|
|
|
|
|
|
|
415
|
|
|
|
|
|
|
|
416
|
0
|
|
|
|
|
|
$SHA1_CALCULATOR->reset(); |
417
|
0
|
|
|
|
|
|
$SHA1_CALCULATOR->add($ns_uuid); |
418
|
|
|
|
|
|
|
|
419
|
|
|
|
|
|
|
|
420
|
0
|
0
|
|
|
|
|
if ( ref($name) =~ m/^(?:GLOB|IO::)/ ) { |
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
421
|
0
|
|
|
|
|
|
$SHA1_CALCULATOR->addfile($name); |
422
|
|
|
|
|
|
|
} elsif ( ref $name ) { |
423
|
0
|
|
|
|
|
|
croak __PACKAGE__ . '::create_uuid(): Name for v5 UUID' . ' has to be SCALAR, GLOB or IO object, not '.ref($name).'!'; |
424
|
|
|
|
|
|
|
} elsif ( defined $name ) { |
425
|
0
|
|
|
|
|
|
$SHA1_CALCULATOR->add($name); |
426
|
|
|
|
|
|
|
} else { |
427
|
0
|
|
|
|
|
|
croak __PACKAGE__ . '::create_uuid(): Name for v5 UUID is not defined!'; |
428
|
|
|
|
|
|
|
} |
429
|
|
|
|
|
|
|
|
430
|
0
|
|
|
|
|
|
$uuid = substr( $SHA1_CALCULATOR->digest(), 0, 16 ); # Use only first 16 Bytes |
431
|
|
|
|
|
|
|
|
432
|
0
|
|
|
|
|
|
return _set_uuid_version($uuid => 0x50); |
433
|
|
|
|
|
|
|
} |
434
|
|
|
|
|
|
|
|
435
|
|
|
|
|
|
|
sub _set_uuid_version { |
436
|
0
|
|
|
0
|
|
|
my $uuid = shift; |
437
|
0
|
|
|
|
|
|
my $version = shift; |
438
|
0
|
|
|
|
|
|
substr $uuid, 6, 1, chr( ord( substr( $uuid, 6, 1 ) ) & 0x0f | $version ); |
439
|
|
|
|
|
|
|
|
440
|
0
|
|
|
|
|
|
return $uuid; |
441
|
|
|
|
|
|
|
|
442
|
|
|
|
|
|
|
} |
443
|
|
|
|
|
|
|
|
444
|
|
|
|
|
|
|
=item B, B (:std) |
445
|
|
|
|
|
|
|
|
446
|
|
|
|
|
|
|
Similar to C, but creates a UUID string. |
447
|
|
|
|
|
|
|
|
448
|
|
|
|
|
|
|
=cut |
449
|
|
|
|
|
|
|
|
450
|
|
|
|
|
|
|
sub create_uuid_as_string { |
451
|
0
|
|
|
0
|
1
|
|
return uuid_to_string(create_uuid(@_)); |
452
|
|
|
|
|
|
|
} |
453
|
|
|
|
|
|
|
|
454
|
|
|
|
|
|
|
*create_UUID_as_string = \&create_uuid_as_string; |
455
|
|
|
|
|
|
|
|
456
|
|
|
|
|
|
|
|
457
|
|
|
|
|
|
|
=item B, B (:std) |
458
|
|
|
|
|
|
|
|
459
|
|
|
|
|
|
|
my $bool = is_UUID_string($str); |
460
|
|
|
|
|
|
|
|
461
|
|
|
|
|
|
|
=cut |
462
|
|
|
|
|
|
|
|
463
|
|
|
|
|
|
|
our $IS_UUID_STRING = qr/^[0-9a-f]{8}(?:-[0-9a-f]{4}){3}-[0-9a-f]{12}$/is; |
464
|
|
|
|
|
|
|
our $IS_UUID_HEX = qr/^[0-9a-f]{32}$/is; |
465
|
|
|
|
|
|
|
our $IS_UUID_Base64 = qr/^[+\/0-9A-Za-z]{22}(?:==)?$/s; |
466
|
|
|
|
|
|
|
|
467
|
|
|
|
|
|
|
sub is_uuid_string { |
468
|
0
|
|
|
0
|
1
|
|
my $uuid = shift; |
469
|
0
|
|
|
|
|
|
return $uuid =~ m/$IS_UUID_STRING/; |
470
|
|
|
|
|
|
|
} |
471
|
|
|
|
|
|
|
|
472
|
|
|
|
|
|
|
*is_UUID_string = \&is_uuid_string; |
473
|
|
|
|
|
|
|
|
474
|
|
|
|
|
|
|
|
475
|
|
|
|
|
|
|
=item B, B (:std) |
476
|
|
|
|
|
|
|
|
477
|
|
|
|
|
|
|
my $uuid_str = UUID_to_string($uuid); |
478
|
|
|
|
|
|
|
|
479
|
|
|
|
|
|
|
This function returns C<$uuid> unchanged if it is a UUID string already. |
480
|
|
|
|
|
|
|
|
481
|
|
|
|
|
|
|
=cut |
482
|
|
|
|
|
|
|
|
483
|
|
|
|
|
|
|
sub uuid_to_string { |
484
|
0
|
|
|
0
|
1
|
|
my $uuid = shift; |
485
|
40
|
|
|
40
|
|
43167
|
use bytes; |
|
40
|
|
|
|
|
67
|
|
|
40
|
|
|
|
|
163
|
|
486
|
0
|
0
|
|
|
|
|
return $uuid |
487
|
|
|
|
|
|
|
if $uuid =~ m/$IS_UUID_STRING/; |
488
|
0
|
0
|
|
|
|
|
croak __PACKAGE__ . "::uuid_to_string(): Invalid UUID!" |
489
|
|
|
|
|
|
|
unless length $uuid == 16; |
490
|
|
|
|
|
|
|
return join q{-}, |
491
|
0
|
|
|
|
|
|
map { unpack 'H*', $_ } |
492
|
0
|
|
|
|
|
|
map { substr $uuid, 0, $_, q{} } |
|
0
|
|
|
|
|
|
|
493
|
|
|
|
|
|
|
( 4, 2, 2, 2, 6 ); |
494
|
|
|
|
|
|
|
} |
495
|
|
|
|
|
|
|
|
496
|
|
|
|
|
|
|
*UUID_to_string = \&uuid_to_string; |
497
|
|
|
|
|
|
|
|
498
|
|
|
|
|
|
|
|
499
|
|
|
|
|
|
|
=item B, B (:std) |
500
|
|
|
|
|
|
|
|
501
|
|
|
|
|
|
|
my $uuid = string_to_UUID($uuid_str); |
502
|
|
|
|
|
|
|
|
503
|
|
|
|
|
|
|
This function returns C<$uuid_str> unchanged if it is a UUID already. |
504
|
|
|
|
|
|
|
|
505
|
|
|
|
|
|
|
In addition to the standard UUID string representation and its URN forms |
506
|
|
|
|
|
|
|
(starting with C or C), this function accepts 32 digit hex |
507
|
|
|
|
|
|
|
strings, variants with different positions of C<-> and Base64 encoded UUIDs. |
508
|
|
|
|
|
|
|
|
509
|
|
|
|
|
|
|
Throws an exception if string can't be interpreted as a UUID. |
510
|
|
|
|
|
|
|
|
511
|
|
|
|
|
|
|
If you want to make shure to have a "pure" standard UUID representation, check |
512
|
|
|
|
|
|
|
with C! |
513
|
|
|
|
|
|
|
|
514
|
|
|
|
|
|
|
=cut |
515
|
|
|
|
|
|
|
|
516
|
|
|
|
|
|
|
sub string_to_uuid { |
517
|
0
|
|
|
0
|
1
|
|
my $uuid = shift; |
518
|
|
|
|
|
|
|
|
519
|
40
|
|
|
40
|
|
5307
|
use bytes; |
|
40
|
|
|
|
|
83
|
|
|
40
|
|
|
|
|
157
|
|
520
|
0
|
0
|
|
|
|
|
return $uuid if length $uuid == 16; |
521
|
0
|
0
|
|
|
|
|
return decode_base64($uuid) if ($uuid =~ m/$IS_UUID_Base64/); |
522
|
0
|
|
|
|
|
|
my $str = $uuid; |
523
|
0
|
|
|
|
|
|
$uuid =~ s/^(?:urn:)?(?:uuid:)?//io; |
524
|
0
|
|
|
|
|
|
$uuid =~ tr/-//d; |
525
|
0
|
0
|
|
|
|
|
return pack 'H*', $uuid if $uuid =~ m/$IS_UUID_HEX/; |
526
|
0
|
|
|
|
|
|
croak __PACKAGE__ . "::string_to_uuid(): '$str' is no UUID string!"; |
527
|
|
|
|
|
|
|
} |
528
|
|
|
|
|
|
|
|
529
|
|
|
|
|
|
|
*string_to_UUID = \&string_to_uuid; |
530
|
|
|
|
|
|
|
|
531
|
|
|
|
|
|
|
|
532
|
|
|
|
|
|
|
=item B, B (:std) |
533
|
|
|
|
|
|
|
|
534
|
|
|
|
|
|
|
my $version = version_of_UUID($uuid); |
535
|
|
|
|
|
|
|
|
536
|
|
|
|
|
|
|
This function accepts binary and string UUIDs. |
537
|
|
|
|
|
|
|
|
538
|
|
|
|
|
|
|
=cut |
539
|
|
|
|
|
|
|
|
540
|
|
|
|
|
|
|
sub version_of_uuid { |
541
|
0
|
|
|
0
|
1
|
|
my $uuid = shift; |
542
|
40
|
|
|
40
|
|
6808
|
use bytes; |
|
40
|
|
|
|
|
67
|
|
|
40
|
|
|
|
|
145
|
|
543
|
0
|
|
|
|
|
|
$uuid = string_to_uuid($uuid); |
544
|
0
|
|
|
|
|
|
return (ord(substr($uuid, 6, 1)) & 0xf0) >> 4; |
545
|
|
|
|
|
|
|
} |
546
|
|
|
|
|
|
|
|
547
|
|
|
|
|
|
|
*version_of_UUID = \&version_of_uuid; |
548
|
|
|
|
|
|
|
|
549
|
|
|
|
|
|
|
|
550
|
|
|
|
|
|
|
=item B, B (:std) |
551
|
|
|
|
|
|
|
|
552
|
|
|
|
|
|
|
my $uuid_time = time_of_UUID($uuid); |
553
|
|
|
|
|
|
|
|
554
|
|
|
|
|
|
|
This function accepts UUIDs and UUID strings. Returns the time as a floating |
555
|
|
|
|
|
|
|
point value, so use C to get a C |
556
|
|
|
|
|
|
|
|
557
|
|
|
|
|
|
|
Returns C if the UUID is not version 1. |
558
|
|
|
|
|
|
|
|
559
|
|
|
|
|
|
|
=cut |
560
|
|
|
|
|
|
|
|
561
|
|
|
|
|
|
|
sub time_of_uuid { |
562
|
0
|
|
|
0
|
1
|
|
my $uuid = shift; |
563
|
40
|
|
|
40
|
|
3176
|
use bytes; |
|
40
|
|
|
|
|
79
|
|
|
40
|
|
|
|
|
156
|
|
564
|
0
|
|
|
|
|
|
$uuid = string_to_uuid($uuid); |
565
|
0
|
0
|
|
|
|
|
return unless version_of_uuid($uuid) == 1; |
566
|
|
|
|
|
|
|
|
567
|
0
|
|
|
|
|
|
my $low = unpack 'N', substr($uuid, 0, 4); |
568
|
0
|
|
|
|
|
|
my $mid = unpack 'n', substr($uuid, 4, 2); |
569
|
0
|
|
|
|
|
|
my $high = unpack('n', substr($uuid, 6, 2)) & 0x0fff; |
570
|
|
|
|
|
|
|
|
571
|
0
|
|
|
|
|
|
my $hi = $mid | $high << 16; |
572
|
|
|
|
|
|
|
|
573
|
|
|
|
|
|
|
# MAGIC offset: 01B2-1DD2-13814000 |
574
|
0
|
0
|
|
|
|
|
if ($low >= 0x13814000) { |
575
|
0
|
|
|
|
|
|
$low -= 0x13814000; |
576
|
|
|
|
|
|
|
} |
577
|
|
|
|
|
|
|
else { |
578
|
0
|
|
|
|
|
|
$low += 0xec7ec000; |
579
|
0
|
|
|
|
|
|
$hi --; |
580
|
|
|
|
|
|
|
} |
581
|
|
|
|
|
|
|
|
582
|
0
|
0
|
|
|
|
|
if ($hi >= 0x01b21dd2) { |
583
|
0
|
|
|
|
|
|
$hi -= 0x01b21dd2; |
584
|
|
|
|
|
|
|
} |
585
|
|
|
|
|
|
|
else { |
586
|
0
|
|
|
|
|
|
$hi += 0x0e4de22e; # wrap around |
587
|
|
|
|
|
|
|
} |
588
|
|
|
|
|
|
|
|
589
|
0
|
|
|
|
|
|
$low /= 10000000.0; |
590
|
0
|
|
|
|
|
|
$hi /= 78125.0 / 512 / 65536; # / 1000000 * 0x10000000 |
591
|
|
|
|
|
|
|
|
592
|
0
|
|
|
|
|
|
return $hi + $low; |
593
|
|
|
|
|
|
|
} |
594
|
|
|
|
|
|
|
|
595
|
|
|
|
|
|
|
*time_of_UUID = \&time_of_uuid; |
596
|
|
|
|
|
|
|
|
597
|
|
|
|
|
|
|
|
598
|
|
|
|
|
|
|
=item B, B (:std) |
599
|
|
|
|
|
|
|
|
600
|
|
|
|
|
|
|
my $uuid_clk_seq = clk_seq_of_UUID($uuid); |
601
|
|
|
|
|
|
|
|
602
|
|
|
|
|
|
|
This function accepts UUIDs and UUID strings. Returns the clock sequence for a |
603
|
|
|
|
|
|
|
version 1 UUID. Returns C if UUID is not version 1. |
604
|
|
|
|
|
|
|
|
605
|
|
|
|
|
|
|
=cut |
606
|
|
|
|
|
|
|
|
607
|
|
|
|
|
|
|
sub clk_seq_of_uuid { |
608
|
40
|
|
|
40
|
|
7032
|
use bytes; |
|
40
|
|
|
|
|
63
|
|
|
40
|
|
|
|
|
147
|
|
609
|
0
|
|
|
0
|
1
|
|
my $uuid = shift; |
610
|
0
|
|
|
|
|
|
$uuid = string_to_uuid($uuid); |
611
|
0
|
0
|
|
|
|
|
return unless version_of_uuid($uuid) == 1; |
612
|
|
|
|
|
|
|
|
613
|
0
|
|
|
|
|
|
my $r = unpack 'n', substr($uuid, 8, 2); |
614
|
0
|
|
|
|
|
|
my $v = $r >> 13; |
615
|
0
|
0
|
|
|
|
|
my $w = ($v >= 6) ? 3 # 11x |
|
|
0
|
|
|
|
|
|
616
|
|
|
|
|
|
|
: ($v >= 4) ? 2 # 10- |
617
|
|
|
|
|
|
|
: 1 # 0-- |
618
|
|
|
|
|
|
|
; |
619
|
0
|
|
|
|
|
|
$w = 16 - $w; |
620
|
|
|
|
|
|
|
|
621
|
0
|
|
|
|
|
|
return $r & ((1 << $w) - 1); |
622
|
|
|
|
|
|
|
} |
623
|
|
|
|
|
|
|
|
624
|
|
|
|
|
|
|
*clk_seq_of_UUID = \&clk_seq_of_uuid; |
625
|
|
|
|
|
|
|
|
626
|
|
|
|
|
|
|
|
627
|
|
|
|
|
|
|
=item B, B (:std) |
628
|
|
|
|
|
|
|
|
629
|
|
|
|
|
|
|
my $bool = equal_UUIDs($uuid1, $uuid2); |
630
|
|
|
|
|
|
|
|
631
|
|
|
|
|
|
|
Returns true if the provided UUIDs are equal. Accepts UUIDs and UUID strings |
632
|
|
|
|
|
|
|
(can be mixed). |
633
|
|
|
|
|
|
|
|
634
|
|
|
|
|
|
|
=cut |
635
|
|
|
|
|
|
|
|
636
|
|
|
|
|
|
|
sub equal_uuids { |
637
|
0
|
|
|
0
|
1
|
|
my ($u1, $u2) = @_; |
638
|
0
|
0
|
0
|
|
|
|
return unless defined $u1 && defined $u2; |
639
|
0
|
|
|
|
|
|
return string_to_uuid($u1) eq string_to_uuid($u2); |
640
|
|
|
|
|
|
|
} |
641
|
|
|
|
|
|
|
|
642
|
|
|
|
|
|
|
*equal_UUIDs = \&equal_uuids; |
643
|
|
|
|
|
|
|
|
644
|
|
|
|
|
|
|
|
645
|
|
|
|
|
|
|
# |
646
|
|
|
|
|
|
|
# Private functions ... |
647
|
|
|
|
|
|
|
# |
648
|
|
|
|
|
|
|
|
649
|
|
|
|
|
|
|
my $last_timestamp; |
650
|
|
|
|
|
|
|
my $clk_seq; |
651
|
|
|
|
|
|
|
|
652
|
|
|
|
|
|
|
sub _get_clk_seq { |
653
|
0
|
|
|
0
|
|
|
my $ts = shift; |
654
|
0
|
|
|
|
|
|
lock $last_timestamp; |
655
|
0
|
|
|
|
|
|
lock $clk_seq; |
656
|
|
|
|
|
|
|
|
657
|
0
|
0
|
|
|
|
|
$clk_seq = _generate_clk_seq() if !defined $clk_seq; |
658
|
|
|
|
|
|
|
|
659
|
0
|
0
|
0
|
|
|
|
if (!defined $last_timestamp || $ts <= $last_timestamp) { |
660
|
0
|
|
|
|
|
|
$clk_seq = ($clk_seq + 1) % 65536; |
661
|
|
|
|
|
|
|
} |
662
|
0
|
|
|
|
|
|
$last_timestamp = $ts; |
663
|
|
|
|
|
|
|
|
664
|
0
|
|
|
|
|
|
return $clk_seq & 0x03ff; |
665
|
|
|
|
|
|
|
} |
666
|
|
|
|
|
|
|
|
667
|
|
|
|
|
|
|
sub _generate_clk_seq { |
668
|
0
|
|
|
0
|
|
|
my $self = shift; |
669
|
|
|
|
|
|
|
|
670
|
0
|
|
|
|
|
|
my @data; |
671
|
0
|
|
|
|
|
|
push @data, q{} . $$; |
672
|
0
|
|
|
|
|
|
push @data, q{:} . Time::HiRes::time(); |
673
|
|
|
|
|
|
|
|
674
|
|
|
|
|
|
|
# 16 bit digest |
675
|
0
|
|
|
|
|
|
return unpack 'n', _digest_as_octets(2, @data); |
676
|
|
|
|
|
|
|
} |
677
|
|
|
|
|
|
|
|
678
|
|
|
|
|
|
|
sub _random_node_id { |
679
|
0
|
|
|
0
|
|
|
my $self = shift; |
680
|
|
|
|
|
|
|
|
681
|
0
|
|
|
|
|
|
my $r1 = _rand_32bit(); |
682
|
0
|
|
|
|
|
|
my $r2 = _rand_32bit(); |
683
|
|
|
|
|
|
|
|
684
|
0
|
|
|
|
|
|
my $hi = ($r1 >> 8) ^ ($r2 & 0xff); |
685
|
0
|
|
|
|
|
|
my $lo = ($r2 >> 8) ^ ($r1 & 0xff); |
686
|
|
|
|
|
|
|
|
687
|
0
|
|
|
|
|
|
$hi |= 0x80; |
688
|
|
|
|
|
|
|
|
689
|
0
|
|
|
|
|
|
my $id = substr pack('V', $hi), 0, 3; |
690
|
0
|
|
|
|
|
|
$id .= substr pack('V', $lo), 0, 3; |
691
|
|
|
|
|
|
|
|
692
|
0
|
|
|
|
|
|
return $id; |
693
|
|
|
|
|
|
|
} |
694
|
|
|
|
|
|
|
|
695
|
|
|
|
|
|
|
sub _rand_32bit { |
696
|
0
|
|
|
0
|
|
|
my $v1 = int(rand(65536)) % 65536; |
697
|
0
|
|
|
|
|
|
my $v2 = int(rand(65536)) % 65536; |
698
|
0
|
|
|
|
|
|
return ($v1 << 16) | $v2; |
699
|
|
|
|
|
|
|
} |
700
|
|
|
|
|
|
|
|
701
|
|
|
|
|
|
|
sub _fold_into_octets { |
702
|
40
|
|
|
40
|
|
16943
|
use bytes; |
|
40
|
|
|
|
|
73
|
|
|
40
|
|
|
|
|
139
|
|
703
|
0
|
|
|
0
|
|
|
my ($num_octets, $s) = @_; |
704
|
|
|
|
|
|
|
|
705
|
0
|
|
|
|
|
|
my $x = "\x0" x $num_octets; |
706
|
|
|
|
|
|
|
|
707
|
0
|
|
|
|
|
|
while (length $s > 0) { |
708
|
0
|
|
|
|
|
|
my $n = q{}; |
709
|
0
|
|
|
|
|
|
while (length $x > 0) { |
710
|
0
|
|
|
|
|
|
my $c = ord(substr $x, -1, 1, q{}) ^ ord(substr $s, -1, 1, q{}); |
711
|
0
|
|
|
|
|
|
$n = chr($c) . $n; |
712
|
0
|
0
|
|
|
|
|
last if length $s <= 0; |
713
|
|
|
|
|
|
|
} |
714
|
0
|
|
|
|
|
|
$n = $x . $n; |
715
|
|
|
|
|
|
|
|
716
|
0
|
|
|
|
|
|
$x = $n; |
717
|
|
|
|
|
|
|
} |
718
|
|
|
|
|
|
|
|
719
|
0
|
|
|
|
|
|
return $x; |
720
|
|
|
|
|
|
|
} |
721
|
|
|
|
|
|
|
|
722
|
|
|
|
|
|
|
sub _digest_as_octets { |
723
|
0
|
|
|
0
|
|
|
my $num_octets = shift; |
724
|
|
|
|
|
|
|
|
725
|
0
|
|
|
|
|
|
$MD5_CALCULATOR->reset(); |
726
|
0
|
|
|
|
|
|
$MD5_CALCULATOR->add($_) for @_; |
727
|
|
|
|
|
|
|
|
728
|
0
|
|
|
|
|
|
return _fold_into_octets($num_octets, $MD5_CALCULATOR->digest); |
729
|
|
|
|
|
|
|
} |
730
|
|
|
|
|
|
|
|
731
|
|
|
|
|
|
|
|
732
|
|
|
|
|
|
|
=back |
733
|
|
|
|
|
|
|
|
734
|
|
|
|
|
|
|
=cut |
735
|
|
|
|
|
|
|
|
736
|
|
|
|
|
|
|
|
737
|
|
|
|
|
|
|
=head1 DISCUSSION |
738
|
|
|
|
|
|
|
|
739
|
|
|
|
|
|
|
=over |
740
|
|
|
|
|
|
|
|
741
|
|
|
|
|
|
|
=item B |
742
|
|
|
|
|
|
|
|
743
|
|
|
|
|
|
|
The random multi-cast MAC address gives privacy, and getting the real MAC |
744
|
|
|
|
|
|
|
address with Perl is really dirty (and slow); |
745
|
|
|
|
|
|
|
|
746
|
|
|
|
|
|
|
=item B |
747
|
|
|
|
|
|
|
|
748
|
|
|
|
|
|
|
Using SHA-1 reduces the probabillity of collisions and provides a better |
749
|
|
|
|
|
|
|
"randomness" of the resulting UUID compared to MD5. Version 5 is recommended |
750
|
|
|
|
|
|
|
in RFC 4122 if backward compatibility is not an issue. |
751
|
|
|
|
|
|
|
|
752
|
|
|
|
|
|
|
Using MD5 (version 3) has a better performance. This could be important with |
753
|
|
|
|
|
|
|
creating UUIDs from file content rather than names. |
754
|
|
|
|
|
|
|
|
755
|
|
|
|
|
|
|
=back |
756
|
|
|
|
|
|
|
|
757
|
|
|
|
|
|
|
|
758
|
|
|
|
|
|
|
=head1 UUID DEFINITION |
759
|
|
|
|
|
|
|
|
760
|
|
|
|
|
|
|
See RFC 4122 (L) for technical details on |
761
|
|
|
|
|
|
|
UUIDs. |
762
|
|
|
|
|
|
|
|
763
|
|
|
|
|
|
|
|
764
|
|
|
|
|
|
|
=head1 AUTHOR |
765
|
|
|
|
|
|
|
|
766
|
|
|
|
|
|
|
Much of this code is borrowed from UUID::Generator by ITO Nobuaki |
767
|
|
|
|
|
|
|
Ebanb@cpan.orgE. But that module is announced to be marked as |
768
|
|
|
|
|
|
|
"deprecated" in the future and it is much too complicated for my liking. |
769
|
|
|
|
|
|
|
|
770
|
|
|
|
|
|
|
So I decided to reduce it to the necessary parts and to re-implement those |
771
|
|
|
|
|
|
|
parts with a functional interface ... |
772
|
|
|
|
|
|
|
|
773
|
|
|
|
|
|
|
Christian Augustin, C<< >> |
774
|
|
|
|
|
|
|
|
775
|
|
|
|
|
|
|
|
776
|
|
|
|
|
|
|
=head1 BUGS |
777
|
|
|
|
|
|
|
|
778
|
|
|
|
|
|
|
Please report any bugs or feature requests to C, |
779
|
|
|
|
|
|
|
or through the web interface at |
780
|
|
|
|
|
|
|
L. |
781
|
|
|
|
|
|
|
I will be notified, and then you'll automatically be notified of progress on |
782
|
|
|
|
|
|
|
your bug as I make changes. |
783
|
|
|
|
|
|
|
|
784
|
|
|
|
|
|
|
|
785
|
|
|
|
|
|
|
=head1 SUPPORT |
786
|
|
|
|
|
|
|
|
787
|
|
|
|
|
|
|
You can find documentation for this module with the perldoc command. |
788
|
|
|
|
|
|
|
|
789
|
|
|
|
|
|
|
perldoc UUID::Tiny |
790
|
|
|
|
|
|
|
|
791
|
|
|
|
|
|
|
You can also look for information at: |
792
|
|
|
|
|
|
|
|
793
|
|
|
|
|
|
|
=over 4 |
794
|
|
|
|
|
|
|
|
795
|
|
|
|
|
|
|
=item * RT: CPAN's request tracker |
796
|
|
|
|
|
|
|
|
797
|
|
|
|
|
|
|
L |
798
|
|
|
|
|
|
|
|
799
|
|
|
|
|
|
|
=item * AnnoCPAN: Annotated CPAN documentation |
800
|
|
|
|
|
|
|
|
801
|
|
|
|
|
|
|
L |
802
|
|
|
|
|
|
|
|
803
|
|
|
|
|
|
|
=item * CPAN Ratings |
804
|
|
|
|
|
|
|
|
805
|
|
|
|
|
|
|
L |
806
|
|
|
|
|
|
|
|
807
|
|
|
|
|
|
|
=item * Search CPAN |
808
|
|
|
|
|
|
|
|
809
|
|
|
|
|
|
|
L |
810
|
|
|
|
|
|
|
|
811
|
|
|
|
|
|
|
=back |
812
|
|
|
|
|
|
|
|
813
|
|
|
|
|
|
|
|
814
|
|
|
|
|
|
|
=head1 ACKNOWLEDGEMENTS |
815
|
|
|
|
|
|
|
|
816
|
|
|
|
|
|
|
Kudos to ITO Nobuaki Ebanb@cpan.orgE for his UUID::Generator::PurePerl |
817
|
|
|
|
|
|
|
module! My work is based on his code, and without it I would've been lost with |
818
|
|
|
|
|
|
|
all those incomprehensible RFC texts and C codes ... |
819
|
|
|
|
|
|
|
|
820
|
|
|
|
|
|
|
Thanks to Jesse Vincent for his feedback and tips. |
821
|
|
|
|
|
|
|
|
822
|
|
|
|
|
|
|
|
823
|
|
|
|
|
|
|
=head1 COPYRIGHT & LICENSE |
824
|
|
|
|
|
|
|
|
825
|
|
|
|
|
|
|
Copyright 2009 Christian Augustin, all rights reserved. |
826
|
|
|
|
|
|
|
|
827
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify it |
828
|
|
|
|
|
|
|
under the same terms as Perl itself. |
829
|
|
|
|
|
|
|
|
830
|
|
|
|
|
|
|
|
831
|
|
|
|
|
|
|
=cut |
832
|
|
|
|
|
|
|
|
833
|
|
|
|
|
|
|
1; # End of UUID::Tiny |