source4/auth/session.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Authentication utility functions
   4    Copyright (C) Andrew Tridgell 1992-1998
   5    Copyright (C) Andrew Bartlett 2001
   6    Copyright (C) Jeremy Allison 2000-2001
   7    Copyright (C) Rafal Szczesniak 2002
   8    Copyright (C) Stefan Metzmacher 2005
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include "auth/auth.h"
  26 #include "libcli/security/security.h"
  27 #include "libcli/auth/libcli_auth.h"
  28 #include "dsdb/samdb/samdb.h"
  29 #include "auth/credentials/credentials.h"
  30 #include "param/param.h"
  31 #include "auth/session_proto.h"
  32
  33 _PUBLIC_ struct auth_session_info *anonymous_session(TALLOC_CTX *mem_ctx,
  34                                             struct tevent_context *event_ctx,
  35                                             struct loadparm_context *lp_ctx)
  36 {
  37         NTSTATUS nt_status;
  38         struct auth_session_info *session_info = NULL;
  39         nt_status = auth_anonymous_session_info(mem_ctx, event_ctx, lp_ctx, &session_info);
  40         if (!NT_STATUS_IS_OK(nt_status)) {
  41                 return NULL;
  42         }
  43         return session_info;
  44 }
  45
  46 _PUBLIC_ NTSTATUS auth_anonymous_session_info(TALLOC_CTX *parent_ctx,
  47                                      struct tevent_context *event_ctx,
  48                                      struct loadparm_context *lp_ctx,
  49                                      struct auth_session_info **_session_info)
  50 {
  51         NTSTATUS nt_status;
  52         struct auth_serversupplied_info *server_info = NULL;
  53         struct auth_session_info *session_info = NULL;
  54         TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
  55
  56         nt_status = auth_anonymous_server_info(mem_ctx,
  57                                                lp_netbios_name(lp_ctx),
  58                                                &server_info);
  59         if (!NT_STATUS_IS_OK(nt_status)) {
  60                 talloc_free(mem_ctx);
  61                 return nt_status;
  62         }
  63
  64         /* references the server_info into the session_info */
  65         nt_status = auth_generate_session_info(parent_ctx, event_ctx, lp_ctx, server_info, &session_info);
  66         talloc_free(mem_ctx);
  67
  68         NT_STATUS_NOT_OK_RETURN(nt_status);
  69
  70         session_info->credentials = cli_credentials_init(session_info);
  71         if (!session_info->credentials) {
  72                 return NT_STATUS_NO_MEMORY;
  73         }
  74
  75         cli_credentials_set_conf(session_info->credentials, lp_ctx);
  76         cli_credentials_set_anonymous(session_info->credentials);
  77
  78         *_session_info = session_info;
  79
  80         return NT_STATUS_OK;
  81 }
  82
  83 _PUBLIC_ NTSTATUS auth_anonymous_server_info(TALLOC_CTX *mem_ctx,
  84                                     const char *netbios_name,
  85                                     struct auth_serversupplied_info **_server_info)
  86 {
  87         struct auth_serversupplied_info *server_info;
  88         server_info = talloc(mem_ctx, struct auth_serversupplied_info);
  89         NT_STATUS_HAVE_NO_MEMORY(server_info);
  90
  91         server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
  92         NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
  93
  94         /* is this correct? */
  95         server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_GUESTS);
  96         NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
  97
  98         server_info->n_domain_groups = 0;
  99         server_info->domain_groups = NULL;
 100
 101         /* annoying, but the Anonymous really does have a session key... */
 102         server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
 103         NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
 104
 105         server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
 106         NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
 107
 108         /*  and it is all zeros! */
 109         data_blob_clear(&server_info->user_session_key);
 110         data_blob_clear(&server_info->lm_session_key);
 111
 112         server_info->account_name = talloc_strdup(server_info, "ANONYMOUS LOGON");
 113         NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
 114
 115         server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY");
 116         NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
 117
 118         server_info->full_name = talloc_strdup(server_info, "Anonymous Logon");
 119         NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
 120
 121         server_info->logon_script = talloc_strdup(server_info, "");
 122         NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
 123
 124         server_info->profile_path = talloc_strdup(server_info, "");
 125         NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
 126
 127         server_info->home_directory = talloc_strdup(server_info, "");
 128         NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
 129
 130         server_info->home_drive = talloc_strdup(server_info, "");
 131         NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
 132
 133         server_info->logon_server = talloc_strdup(server_info, netbios_name);
 134         NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
 135
 136         server_info->last_logon = 0;
 137         server_info->last_logoff = 0;
 138         server_info->acct_expiry = 0;
 139         server_info->last_password_change = 0;
 140         server_info->allow_password_change = 0;
 141         server_info->force_password_change = 0;
 142
 143         server_info->logon_count = 0;
 144         server_info->bad_password_count = 0;
 145
 146         server_info->acct_flags = ACB_NORMAL;
 147
 148         server_info->authenticated = false;
 149
 150         *_server_info = server_info;
 151
 152         return NT_STATUS_OK;
 153 }
 154
 155 _PUBLIC_ NTSTATUS auth_generate_session_info(TALLOC_CTX *mem_ctx,
 156                                     struct tevent_context *event_ctx,
 157                                     struct loadparm_context *lp_ctx,
 158                                     struct auth_serversupplied_info *server_info,
 159                                     struct auth_session_info **_session_info)
 160 {
 161         struct auth_session_info *session_info;
 162         NTSTATUS nt_status;
 163
 164         session_info = talloc(mem_ctx, struct auth_session_info);
 165         NT_STATUS_HAVE_NO_MEMORY(session_info);
 166
 167         session_info->server_info = talloc_reference(session_info, server_info);
 168
 169         /* unless set otherwise, the session key is the user session
 170          * key from the auth subsystem */
 171         session_info->session_key = server_info->user_session_key;
 172
 173         nt_status = security_token_create(session_info,
 174                                           event_ctx,
 175                                           lp_ctx,
 176                                           server_info->account_sid,
 177                                           server_info->primary_group_sid,
 178                                           server_info->n_domain_groups,
 179                                           server_info->domain_groups,
 180                                           server_info->authenticated,
 181                                           &session_info->security_token);
 182         NT_STATUS_NOT_OK_RETURN(nt_status);
 183
 184         session_info->credentials = NULL;
 185
 186         *_session_info = session_info;
 187         return NT_STATUS_OK;
 188 }
 189
 190 /**
 191  * prints a struct auth_session_info security token to debug output.
 192  */
 193 void auth_session_info_debug(int dbg_lev,
 194                              const struct auth_session_info *session_info)
 195 {
 196         if (!session_info) {
 197                 DEBUG(dbg_lev, ("Session Info: (NULL)\n"));
 198                 return;
 199         }
 200
 201         security_token_debug(dbg_lev, session_info->security_token);
 202 }
 203