source: openpam/trunk/doc/man/pam_authenticate.3 @ 119

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1.\"-
2.\" Copyright (c) 2002 Networks Associates Technology, Inc.
3.\" All rights reserved.
4.\"
5.\" This software was developed for the FreeBSD Project by ThinkSec AS and
6.\" NAI Labs, the Security Research Division of Network Associates, Inc.
7.\" under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
8.\" DARPA CHATS research program.
9.\"
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34.\" $P4: //depot/projects/openpam/doc/man/pam_authenticate.3#11 $
35.\"
36.Dd April 14, 2002
37.Dt PAM_AUTHENTICATE 3
38.Os
39.Sh NAME
40.Nm pam_authenticate
41.Nd perform authentication within the PAM framework
42.Sh LIBRARY
43.Lb libpam
44.Sh SYNOPSIS
45.In security/pam_appl.h
46.Ft int
47.Fn pam_authenticate "pam_handle_t *pamh" "int flags"
48.Sh DESCRIPTION
49The
50.Nm
51function attempts to authenticate the user
52associated with the pam context specified by the
53.Va pamh
54argument.
55.Pp
56The application is free to call
57.Nm
58as many times as it
59wishes, but some modules may maintain an internal retry counter and
60return
61.Dv PAM_MAXTRIES
62when it exceeds some preset or hardcoded limit.
63.Pp
64The
65.Va flags
66argument is the binary or of zero or more of the following
67values:
68.Bl -tag -width 18n
69.It Dv PAM_SILENT
70Do not emit any messages.
71.It Dv PAM_DISALLOW_NULL_AUTHTOK
72Fail if the user's authentication token is null.
73.El
74If any other bits are set,
75.Nm
76will return
77.Dv PAM_SYMBOL_ERR .
78.Sh RETURN VALUES
79The
80.Nm
81function returns one of the following values:
82.Bl -tag -width 18n
83.It Bq Er PAM_ABORT
84General failure.
85.It Bq Er PAM_AUTHINFO_UNAVAIL
86Authentication information is unavailable.
87.It Bq Er PAM_AUTH_ERR
88Authentication error.
89.It Bq Er PAM_BUF_ERR
90Memory buffer error.
91.It Bq Er PAM_CONV_ERR
92Conversation failure.
93.It Bq Er PAM_CRED_INSUFFICIENT
94Insufficient credentials.
95.It Bq Er PAM_MAXTRIES
96Maximum number of tries exceeded.
97.It Bq Er PAM_PERM_DENIED
98Permission denied.
99.It Bq Er PAM_SERVICE_ERR
100Error in service module.
101.It Bq Er PAM_SYMBOL_ERR
102Invalid symbol.
103.It Bq Er PAM_SYSTEM_ERR
104System error.
105.It Bq Er PAM_USER_UNKNOWN
106Unknown user.
107.El
108.Sh SEE ALSO
109.Xr pam 3 ,
110.Xr pam_strerror 3
111.Sh STANDARDS
112.Rs
113.%T "X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules"
114.%D "June 1997"
115.Re
116.Sh AUTHORS
117The
118.Nm
119function and this manual page were developed for the FreeBSD Project
120by ThinkSec AS and NAI Labs, the Security Research Division of Network
121Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
122.Pq Dq CBOSS ,
123as part of the DARPA CHATS research program.
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