kopia lustrzana https://gitlab.com/sane-project/backends
2000-11-20 Jochen Eisinger <jochen.eisinger@gmx.net>
* lib/md5.c include/md5.h: added md5 functions from GNU textutils * include/sane/sanei_auth.h sanei/sanei_auth.c: implemented new SANE interface for user authorization using MD5 digestDEVEL_2_0_BRANCH-1
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/* sane - Scanner Access Now Easy.
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Copyright (C) 2000 Jochen Eisinger <jochen.eisinger@gmx.net>
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This file is part of the SANE package.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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As a special exception, the authors of SANE give permission for
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additional uses of the libraries contained in this release of SANE.
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The exception is that, if you link a SANE library with other files
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to produce an executable, this does not by itself cause the
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resulting executable to be covered by the GNU General Public
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License. Your use of that executable is in no way restricted on
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account of linking the SANE library code into it.
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This exception does not, however, invalidate any other reasons why
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the executable file might be covered by the GNU General Public
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License.
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If you submit changes to SANE to the maintainers to be included in
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a subsequent release, you agree by submitting the changes that
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those changes may be distributed with this exception intact.
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If you write modifications of your own for SANE, it is your choice
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whether to permit this exception to apply to your modifications.
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If you do not wish that, delete this exception notice.
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This file implements an interface for user authorization using MD5 digest */
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#ifndef sanei_auth_h
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#define sanei_auth_h
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#include "../include/sane/sane.h"
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/* this function needs the name of the resource to authorize, the name
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* of the backend and the auth_callback. It looks for the file:
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* SANE_CONFIG_DIR/backend.users
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*
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* if this file doesn't exist, sanei_authorize always returns SANE_STATUS_GOOD
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*
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* the file backend.users contains a list of resource usernames and passwords
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*
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* resource:username:password
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* resource:username:password
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*
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* if the requested resource isn't listed in this file, sanei_authorize
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* return SANE_SATUS_GOOD
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*
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* in all other cases, sanei_authorize sends a challenge to the frontend
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* of the form
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*
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* resource$MD5$randomstring
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*
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* where randomstring consists of the PID, the time, and some random characters
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*
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* it accepts two forms of answers
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*
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* std: username:password
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* md5: username:$MD5$m5digest
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*
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* where md5digest is md5(randomstring password)
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*
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* if this resource/username/password triple is listed in backend.users
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* sanei_authorize returns SANE_STATUS_GOOD, in all other cases it returns
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* SANE_STATUS_ACCESS_DENIED
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*/
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SANE_Status
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sanei_authorize (const char *resource,
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const char *backend, SANE_Auth_Callback authorize);
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#endif /* sanei_auth_h */
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