include/authz/pamacct.h

   1 /*
   2  * QEMU PAM authorization driver
   3  *
   4  * Copyright (c) 2018 Red Hat, Inc.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 #ifndef QAUTHZ_PAMACCT_H
  22 #define QAUTHZ_PAMACCT_H
  23
  24 #include "authz/base.h"
  25 #include "qom/object.h"
  26
  27
  28 #define TYPE_QAUTHZ_PAM "authz-pam"
  29
  30 OBJECT_DECLARE_SIMPLE_TYPE(QAuthZPAM, qauthz_pam,
  31                            QAUTHZ_PAM, QAuthZClass)
  32
  33
  34
  35 /**
  36  * QAuthZPAM:
  37  *
  38  * This authorization driver provides a PAM mechanism
  39  * for granting access by matching user names against a
  40  * list of globs. Each match rule has an associated policy
  41  * and a catch all policy applies if no rule matches
  42  *
  43  * To create an instance of this class via QMP:
  44  *
  45  *  {
  46  *    "execute": "object-add",
  47  *    "arguments": {
  48  *      "qom-type": "authz-pam",
  49  *      "id": "authz0",
  50  *      "parameters": {
  51  *        "service": "qemu-vnc-tls"
  52  *      }
  53  *    }
  54  *  }
  55  *
  56  * The driver only uses the PAM "account" verification
  57  * subsystem. The above config would require a config
  58  * file /etc/pam.d/qemu-vnc-tls. For a simple file
  59  * lookup it would contain
  60  *
  61  *   account requisite  pam_listfile.so item=user sense=allow \
  62  *           file=/etc/qemu/vnc.allow
  63  *
  64  * The external file would then contain a list of usernames.
  65  * If x509 cert was being used as the username, a suitable
  66  * entry would match the distinguish name:
  67  *
  68  *  CN=laptop.berrange.com,O=Berrange Home,L=London,ST=London,C=GB
  69  *
  70  * On the command line it can be created using
  71  *
  72  *   -object authz-pam,id=authz0,service=qemu-vnc-tls
  73  *
  74  */
  75 struct QAuthZPAM {
  76     QAuthZ parent_obj;
  77
  78     char *service;
  79 };
  80
  81
  82
  83
  84 QAuthZPAM *qauthz_pam_new(const char *id,
  85                           const char *service,
  86                           Error **errp);
  87
  88 #endif /* QAUTHZ_PAMACCT_H */