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SPTUser.php
Go to the documentation of this file.
1 <?PHP
2
3 #
4 # FILE: SPT--SPTUser.php
5 #
6 # Part of the Collection Workflow Integration System (CWIS)
7 # Copyright 2004-2013 Edward Almasy and Internet Scout Research Group
8 # http://scout.wisc.edu/cwis/
9 #
10
11 class SPTUser extends CWUser
12 {
13
14 # ---- PUBLIC INTERFACE --------------------------------------------------
15
25 public static function GetCryptKey()
26 {
27 $DB = new Database();
28
29 # Clear all keys more than two days old
30 $DB->Query("DELETE FROM UsedLoginTokens WHERE NOW()-KeyCTime > 172800");
31
32 $DB->Query("LOCK TABLES LoginKeys WRITE");
33 $DB->Query("DELETE FROM LoginKeys WHERE NOW() - CreationTime > 172800");
34
35 # Get the most recently generated key
36 $DB->Query("SELECT NOW()-CreationTime as Age,"
37 ."KeyPair FROM LoginKeys "
38 ."ORDER BY Age ASC LIMIT 1");
39 $Row = $DB->FetchRow();
40
41 # If there is no key in the database, or the key is too old
42 if ( ($Row===FALSE) || ($Row["Age"]>=86400) )
43 {
44 # Generate a new OpenSSL format keypair
45 $KeyPair = openssl_pkey_new(
46 array(
47 'private_key_bits' => 512, # Make this a Sysadmin pref later?
48 'private_key_type' => OPENSSL_KEYTYPE_RSA ));
49
50 # Serialize it for storage
51 openssl_pkey_export($KeyPair, $KeyPairDBFormat);
52
53 # And stick it into the database
54 $DB->Query("INSERT INTO LoginKeys "
55 ."(KeyPair, CreationTime) VALUES ("
56 ."\"".addslashes($KeyPairDBFormat)."\","
57 ."NOW())");
58 }
59 else
60 {
61 # If we do have a current key in the database,
62 # Convert it to openssl format for usage
63 $KeyPair = openssl_pkey_get_private( $Row["KeyPair"] );
64 }
65 $DB->Query("UNLOCK TABLES");
66
67 return $KeyPair;
68 }
69
77 public static function ExtractPubKeyParameters($KeyPair)
78 {
79 # Export the keypair as an ASCII signing request (which contains the data we want)
80 openssl_csr_export(openssl_csr_new(array(), $KeyPair), $Export, FALSE);
81
82 $Modulus = "";
83 $Exponent = "";
84
85 // @codingStandardsIgnoreStart
86 $Patterns = array(
87 '/Modulus \([0-9]+ bit\):(.*)Exponent: [0-9]+ \(0x([0-9a-f]+)\)/ms',
88 '/Public-Key: \([0-9]+ bit\).*Modulus:(.*)Exponent: [0-9]+ \(0x([0-9a-f]+)\)/ms',
89 );
90 // @codingStandardsIgnoreEnd
91
92 foreach ($Patterns as $Pattern)
93 {
94 if (preg_match($Pattern, $Export, $Matches))
95 {
96 $Modulus = $Matches[1];
97 $Exponent = $Matches[2];
98 break;
99 }
100 }
101
102 # Clean newlines and whitespace out of the modulus
103 $Modulus = preg_replace("/[^0-9a-f]/", "", $Modulus);
104
105 # Return key material
106 return array( "Modulus" => $Modulus, "Exponent" => $Exponent );
107 }
108 }
User\$DB
$DB
Definition: User.php:975
Database
SQL database abstraction object with smart query caching.
Definition: Database.php:22
SPTUser\ExtractPubKeyParameters
static ExtractPubKeyParameters($KeyPair)
Extract the modulus and exponent of the public key from an OpenSSL format keypair to send in login fo...
Definition: SPTUser.php:77
PHP
PHP
Definition: RSSClient--Test.php:12
SPTUser
Definition: SPTUser.php:11
SPTUser\GetCryptKey
static GetCryptKey()
Get/generate a cryptographic keypair for user login.
Definition: SPTUser.php:25
CWUser
CWIS-specific user class.
Definition: CWUser.php:13