1: # The LearningOnline Network
2: # User Authentication Module
3: # 5/21/99,5/22,5/25,5/26,5/27,5/29,6/2,6/11,6/14,6/15
4: # 16/11,12/16,
5: # 1/14,2/24,2/28,2/29,3/7,5/29,5/30,5/31,6/1,6/5,6/29,
6: # 7/1,7/10,10/2,10/5,10/9,10/26 Gerd Kortemeyer
7:
8: package Apache::lonauth;
9:
10: use Apache::Constants qw(:common);
11: use Apache::File;
12: use CGI qw(:standard);
13: use CGI::Cookie();
14: use Crypt::DES;
15: use Apache::lonnet();
16: use Apache::lonmenu();
17:
18: # ------------------------------------------------------------ Successful login
19:
20: sub success {
21: my ($r, $username, $domain, $authhost,$lowerurl) = @_;
22: my $lonids=$r->dir_config('lonIDsDir');
23:
24: # See if old ID present, if so, remove
25: my $cookie;
26: while ($cookie=<$lonids/$username\_*\_$domain\_$authhost.id>) {
27: unlink($cookie);
28: }
29:
30: # Give them a new cookie
31:
32: my $now=time;
33: $cookie="$username\_$now\_$domain\_$authhost";
34:
35: # Initialize roles
36:
37: my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);
38:
39: # ------------------------------------ Check browser type and MathML capability
40:
41: my @browsertype=split(/\&/,$r->dir_config("lonBrowsDet"));
42: my %mathcap=split(/\&/,$r->dir_config("lonMathML"));
43: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
44: my $i;
45: my $clientbrowser='unknown';
46: my $clientversion='0';
47: my $clientmathml='';
48: for ($i=0;$i<=$#browsertype;$i++) {
49: my ($bname,$match,$notmatch,$vreg,$minv)=split(/\:/,$browsertype[$i]);
50: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
51: $clientbrowser=$bname;
52: $httpbrowser=~/$vreg/i;
53: $clientversion=$1;
54: $clientmathml=($clientversion>=$minv);
55: }
56: }
57: my $clientos='unknown';
58: if (($httpbrowser=~/linux/i) ||
59: ($httpbrowser=~/unix/i) ||
60: ($httpbrowser=~/ux/i) ||
61: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
62: if (($httpbrowser=~/vax/i) ||
63: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
64: if ($httpbrowser=~/next/i) { $clientos='next'; }
65: if (($httpbrowser=~/mac/i) ||
66: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
67: if ($httpbrowser=~/win/i) { $clientos='win'; }
68:
69: # ------------------------------------------------------------- Get environment
70:
71: my $userenv=Apache::lonnet::reply("dump:$domain:$username:environment",
72: $authhost);
73: if (($userenv eq 'con_lost') ||
74: ($userenv =~ /^error\:/)) {
75: $userenv='';
76: }
77: $userenv=~s/\&/\nenvironment\./g;
78: if ($userenv ne '') {
79: $userenv='environment.'.$userenv;
80: }
81: # --------------------------------------------------------- Write first profile
82:
83: {
84: my $idf=Apache::File->new(">$lonids/$cookie.id");
85: if ($userenv ne '') { print $idf "$userenv\n"; }
86: print $idf "user.name=$username\n";
87: print $idf "user.domain=$domain\n";
88: print $idf "user.home=$authhost\n";
89: print $idf "browser.type=$clientbrowser\n";
90: print $idf "browser.version=$clientversion\n";
91: print $idf "browser.mathml=$clientmathml\n";
92: print $idf "browser.os=$clientos\n";
93: print $idf "request.course.fn=\n";
94: print $idf "request.course.uri=\n";
95: print $idf "request.course.sec=\n";
96: print $idf "request.role=cm\n";
97: if ($userroles ne '') { print $idf "$userroles"; }
98: }
99:
100: # -------------------------------------------------------------------- Log this
101:
102: &Apache::lonnet::log($domain,$username,$authhost,
103: "Login $ENV{'REMOTE_ADDR'}");
104:
105: # ------------------------------------------------- Check for critical messages
106:
107: my @what=&Apache::lonnet::dump('critical');
108: if ($what[0]) {
109: if ($what[0] ne 'con_lost') {
110: $lowerurl='/adm/email/critical/'.$what[0];
111: }
112: }
113:
114: # ------------------------------------------------------------ Get cookie ready
115:
116: $cookie="lonID=$cookie; path=/";
117: # -------------------------------------------------------- Menu script and info
118:
119: my $windowinfo=&Apache::lonmenu::open();
120: # ------------------------------------------------- Output for successful login
121:
122: $r->send_cgi_header(<<ENDHEADER);
123: Content-type: text/html
124: Set-cookie: $cookie
125:
126: ENDHEADER
127: $r->print(<<ENDSUCCESS);
128: <html>
129: <head>
130: <title>Successful Login to the LearningOnline Network with CAPA</title>
131: <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$lowerurl">
132: </head>
133: <body bgcolor="#FFFFFF">
134: $windowinfo
135: <h1>Welcome!</h1>
136: </body>
137: </html>
138: ENDSUCCESS
139: }
140:
141: # --------------------------------------------------------------- Failed login!
142:
143: sub failed {
144: my ($r,$message) = @_;
145: $r->send_cgi_header(<<ENDFHEADER);
146: Content-type: text/html
147:
148: ENDFHEADER
149: $r->print(<<ENDFAILED);
150: <html>
151: <head>
152: <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>
153: </head>
154: <html>
155: <body bgcolor="#FFFFFF">
156: <h1>Sorry ...</h1>
157: <h2>$message to use the Learning<i>Online</i> Network with CAPA</h2>
158: </body>
159: </html>
160: ENDFAILED
161: }
162:
163: # ---------------------------------------------------------------- Main handler
164:
165: sub handler {
166: my $r = shift;
167:
168: my $buffer;
169: $r->read($buffer,$r->header_in('Content-length'));
170: my @pairs=split(/&/,$buffer);
171: my $pair; my $name; my $value; my %FORM;
172: foreach $pair (@pairs) {
173: ($name,$value) = split(/=/,$pair);
174: $value =~ tr/+/ /;
175: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
176: $FORM{$name}=$value;
177: }
178:
179: if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {
180: failed($r,'Username, password and domain need to be specified');
181: return OK;
182: }
183: $FORM{'uname'} =~ s/\W//g;
184: $FORM{'udom'} =~ s/\W//g;
185:
186: my $role = $r->dir_config('lonRole');
187: my $domain = $r->dir_config('lonDefDomain');
188: my $prodir = $r->dir_config('lonUsersDir');
189:
190: # ---------------------------------------- Get the information from login token
191:
192: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},
193: $FORM{'serverid'});
194:
195: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
196: failed($r,'Login token missing, inaccessible or expired');
197: return OK;
198: }
199:
200: my ($key,$firsturl)=split(/&/,$tmpinfo);
201:
202: my $keybin=pack("H16",$key);
203:
204: my $cipher=new DES $keybin;
205:
206: my $upass=$cipher->decrypt(
207: unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));
208:
209: $upass.=$cipher->decrypt(
210: unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));
211:
212: $upass=substr($upass,1,ord(substr($upass,0,1)));
213:
214: # ---------------------------------------------------------------- Authenticate
215: my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
216: $upass,
217: $FORM{'udom'});
218:
219: # --------------------------------------------------------------------- Failed?
220:
221: if ($authhost eq 'no_host') {
222: failed($r,'Username and/or password could not be authenticated');
223: return OK;
224: }
225:
226: if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {
227: $firsturl='/res/adm/pages/index.html';
228: }
229:
230: success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
231: return OK;
232: }
233:
234: 1;
235: __END__
236:
237:
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