4 * DEBUG: section 28 Access Control
5 * AUTHOR: Duane Wessels
7 * SQUID Web Proxy Cache http://www.squid-cache.org/
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19 * This program is free software; you can redistribute it and/or modify
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34 * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org>
38 #include "acl/FilledChecklist.h"
40 #include "auth/AclMaxUserIp.h"
41 #include "auth/UserRequest.h"
43 #include "ConfigParser.h"
46 ACLMaxUserIP::clone() const
48 return new ACLMaxUserIP(*this);
51 ACLMaxUserIP::ACLMaxUserIP (char const *theClass
) : class_ (theClass
), maximum(0)
54 ACLMaxUserIP::ACLMaxUserIP (ACLMaxUserIP
const & old
) :class_ (old
.class_
), maximum (old
.maximum
), flags (old
.flags
)
57 ACLMaxUserIP::~ACLMaxUserIP()
61 ACLMaxUserIP::typeString() const
67 ACLMaxUserIP::empty () const
73 ACLMaxUserIP::valid () const
82 debugs(28, 1, "Attempting to alter already set User max IP acl");
86 char *t
= ConfigParser::strtokFile();
91 debugs(28, 5, "aclParseUserMaxIP: First token is " << t
);
93 if (strcmp("-s", t
) == 0) {
94 debugs(28, 5, "aclParseUserMaxIP: Going strict");
96 t
= ConfigParser::strtokFile();
104 debugs(28, 5, "aclParseUserMaxIP: Max IP address's " << maximum
);
110 * aclMatchUserMaxIP - check for users logging in from multiple IP's
115 ACLMaxUserIP::match(AuthUserRequest::Pointer auth_user_request
, Ip::Address
const &src_addr
)
118 * the logic for flush the ip list when the limit is hit vs keep
119 * it sorted in most recent access order and just drop the oldest
120 * one off is currently undecided (RBC)
123 if (authenticateAuthUserRequestIPCount(auth_user_request
) <= maximum
)
126 debugs(28, 1, "aclMatchUserMaxIP: user '" << auth_user_request
->username() << "' tries to use too many IP addresses (max " << maximum
<< " allowed)!");
128 /* this is a match */
131 * simply deny access - the user name is already associated with
134 /* remove _this_ ip, as it is the culprit for going over the limit */
135 authenticateAuthUserRequestRemoveIp(auth_user_request
, src_addr
);
136 debugs(28, 4, "aclMatchUserMaxIP: Denying access in strict mode");
139 * non-strict - remove some/all of the cached entries
140 * ie to allow the user to move machines easily
142 authenticateAuthUserRequestClearIp(auth_user_request
);
143 debugs(28, 4, "aclMatchUserMaxIP: Denying access in non-strict mode - flushing the user ip cache");
150 ACLMaxUserIP::match(ACLChecklist
*cl
)
152 ACLFilledChecklist
*checklist
= Filled(cl
);
153 allow_t answer
= AuthenticateAcl(checklist
);
154 checklist
->currentAnswer(answer
);
157 // convert to tri-state ACL match 1,0,-1
160 case ACCESS_AUTH_EXPIRED_OK
:
162 ti
= match(checklist
->auth_user_request
, checklist
->src_addr
);
163 checklist
->auth_user_request
= NULL
;
167 case ACCESS_AUTH_EXPIRED_BAD
:
168 return 0; // non-match
171 case ACCESS_AUTH_REQUIRED
:
178 ACLMaxUserIP::dump() const
186 wordlistAdd(&W
, "-s");
190 snprintf(buf
, sizeof(buf
), "%lu", (unsigned long int) maximum
);
192 wordlistAdd(&W
, buf
);