1 .\" <!-- $Id: auth_generic.sgml,v 1.4 2007/07/21 20:05:53 mrsam Exp $ -->
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4 .\" Title: auth_generic
6 .\" Generator: DocBook XSL Stylesheets v1.72.0 <http://docbook.sf.net/>
8 .\" Manual: Double Precision, Inc.
9 .\" Source: Double Precision, Inc.
11 .TH "AUTH_GENERIC" "3" "07/21/2007" "Double Precision, Inc." "Double Precision, Inc."
12 .\" disable hyphenation
14 .\" disable justification (adjust text to left margin only)
17 auth_generic \- Generic authentication request
22 #include <courierauth.h>
26 .BI "int rc=auth_generic(const\ char\ *" "service" ", const\ char\ *" "authtype" ", const\ char\ *" "authdata" ", int\ " "(*callback_func)" "\ (struct\ authinfo\ *,\ void\ *), void\ *" "callback_arg" ");"
31 processes a generic authentication request. You do not want to use this function. You really want to use
32 \fI\fBauth_login\fR(3)\fR\&[1].
34 specifies which so\-called "service" is being authenticated; like
39 may or may not be used by the Courier authentication library's configured back\-end module.
43 specifies the format of the authentication request. Three authentication formats are defined in
50 contains the following string:
51 \(lq\fIuserid\fR\en\fIpassword\fR\en\(rq. That is, the userid being authenticated, an
53 newline character, the password, and a second newline character.
56 AUTHTYPE_CRAMMD5 or AUTHTYPE_CRAMSHA1
58 This format is used with
63 contains the following string:
64 \(lq\fIchallenge\fR\en\fIresponse\fR\en\(rq.
66 is the base64\-encoded challenge, which is followed by an
70 is a base64\-encoded string that's followed by a second newline character. The base64\-encoded string consists of the responding userid, a space character, then the response to the challenge expressed as hexadecimal digits.
79 \fBcallback_func\fR's return value becomes the return value from
81 (which should be 0, by convention).
83 will not be invoked if an error occurs, which is reported by a non\-zero return value from
84 \fBauth_generic\fR. By convention, a positive return value indicates an internal, temporary failure, such as the authentication daemon process not running; a negative return value indicates that this request was processed, but it failed.
86 The second argument to
89 \fBcallback_arg\fR, which is not interpreted by this function in any way. The first argument will be a pointer to the following structure:
90 \fBExample\ 1.\ struct authinfo\fR
95 const char *sysusername;
96 const uid_t *sysuserid;
101 const char *fullname;
105 const char *clearpasswd;
113 Description of the above fields:
117 The authenticated login ID.
122 The authenticated account's userid and groupid can be looked up in the password file using
123 address. If this field is
124 NULL, obtain the userid and the groupid from
138 is initialized, otherwise it's a pointer to the account's numeric userid.
143 Account's numeric groupid.
153 This is the account's full name. This field is optional, it may be
159 The account's home directory. This field cannot be
165 The pathname to the account's mailbox. This field is optional, it can be
167 in which case the default location is assumed.
172 Optional maildir quota on the account's mailbox (and
179 The account's encrypted password, if available. If the account has a cleartext password defined, this field can be set to
180 NULL. The encrypted password can take several formats:
182 \h'-04'\(bu\h'+03'A traditional triple\-DES crypted password, or a MD5+salt\-hashed password, as used in Linux.
187 followed by a base64\-encoded MD5 hash of the password.
192 followed by a base64\-encoded SHA1 hash of the password.
198 The account's cleartext password, if available. If the account has an encrypted password defined, this field can be set to
204 A comma\-separated list of miscellaneous account options. See below for more information.
206 .SS "Account options"
208 Depending on the configuration of the Courier authentication library, accounts may have individual options associated with them. If the authentication library configuration does not implement account options, the option string will be
209 NULL. Otherwise it will be a comma\-separated list of
210 \(lq\fIoption\fR=\fIvalue\fR\(rq
214 .nr an-no-space-flag 1
219 This is the account option implementation that's used by Courier, Courier\-IMAP, and SqWebMail packages. Some of the following information is obviously not applicable for a particular package. The inapplicable bits should be obvious.
221 The following options are recognized by the various Courier packages:
224 .nr an-no-space-flag 1
229 The application is responsible for enforcing all the
231 option. An authentication request for service
232 \(lqimap\(rq, for example, will succeed provided that the userid and the password are valid, even if
233 \(lqdisableimap=1\(rq
234 is set. The application's
236 should check for this condition, and return a negative return code.
240 If "n" is 1, IMAP access to this account should be disabled.
245 If "n" is 1, POP3 access to this account should be disabled.
248 disablewebmail=\fIn\fR
250 If "n" is 1, webmail access to this account should be disabled.
253 disableshared=\fIn\fR
255 If "n" is 1, this account should not have access to shared folders or be able to share its own folders with other people.
260 This account is a member of access group
261 \fIname\fR. Instead of granting access rights on individual mail folders to individual accounts, the access rights can be granted to an access group
262 \(lqname\(rq, and all members of this group get the specified access rights.
264 The access group name
265 \(lqadministrators\(rq
266 is a reserved group. All accounts in the
268 group automatically receive all rights to all accessible folders.
271 .nr an-no-space-flag 1
275 This option may be specified multiple times to specify that the account belongs to multiple account groups.
278 sharedgroup=\fIname\fR
280 Append "name" to the name of the top level virtual shared folder index file. This setting restricts which virtual shared folders this account could possibly access (and that's on top of whatever else the access control lists say). See the virtual shared folder documentation for more information.
282 For technical reasons, group names may not include comma, tab, "/" or "|" characters.
287 \fI\fBauthlib\fR(3)\fR\&[2],
288 \fI\fBauth_login\fR(3)\fR\&[1],
289 \fI\fBauth_getuserinfo\fR(3)\fR\&[3],
290 \fI\fBauth_enumerate\fR(3)\fR\&[4],
291 \fI\fBauth_passwd\fR(3)\fR\&[5],
292 \fI\fBauth_getoption\fR(3)\fR\&[6].
305 \fBauth_getuserinfo\fR(3)
307 \%auth_getuserinfo.html
310 \fBauth_enumerate\fR(3)
312 \%auth_enumerate.html
320 \fBauth_getoption\fR(3)
322 \%auth_getoption.html