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Diffstat (limited to 'source3/auth/auth_builtin.c')
| -rw-r--r-- | source3/auth/auth_builtin.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/source3/auth/auth_builtin.c b/source3/auth/auth_builtin.c new file mode 100644 index 0000000000..3741f29779 --- /dev/null +++ b/source3/auth/auth_builtin.c @@ -0,0 +1,174 @@ +/* + Unix SMB/CIFS implementation. + Generic authentication types + Copyright (C) Andrew Bartlett 2001-2002 + Copyright (C) Jelmer Vernooij 2002 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "includes.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_AUTH + +/** + * Return a guest logon for guest users (username = "") + * + * Typically used as the first module in the auth chain, this allows + * guest logons to be dealt with in one place. Non-guest logons 'fail' + * and pass onto the next module. + **/ + +static NTSTATUS check_guest_security(const struct auth_context *auth_context, + void *my_private_data, + TALLOC_CTX *mem_ctx, + const auth_usersupplied_info *user_info, + auth_serversupplied_info **server_info) +{ + /* mark this as 'not for me' */ + NTSTATUS nt_status = NT_STATUS_NOT_IMPLEMENTED; + + if (!(user_info->internal_username + && *user_info->internal_username)) { + nt_status = make_server_info_guest(NULL, server_info); + } + + return nt_status; +} + +/* Guest modules initialisation */ + +static NTSTATUS auth_init_guest(struct auth_context *auth_context, const char *options, auth_methods **auth_method) +{ + if (!make_auth_methods(auth_context, auth_method)) + return NT_STATUS_NO_MEMORY; + + (*auth_method)->auth = check_guest_security; + (*auth_method)->name = "guest"; + return NT_STATUS_OK; +} + +#ifdef DEVELOPER +/** + * Return an error based on username + * + * This function allows the testing of obsure errors, as well as the generation + * of NT_STATUS -> DOS error mapping tables. + * + * This module is of no value to end-users. + * + * The password is ignored. + * + * @return An NTSTATUS value based on the username + **/ + +static NTSTATUS check_name_to_ntstatus_security(const struct auth_context *auth_context, + void *my_private_data, + TALLOC_CTX *mem_ctx, + const auth_usersupplied_info *user_info, + auth_serversupplied_info **server_info) +{ + NTSTATUS nt_status; + fstring user; + long error_num; + fstrcpy(user, user_info->smb_name); + + if (strnequal("NT_STATUS", user, strlen("NT_STATUS"))) { + strupper_m(user); + return nt_status_string_to_code(user); + } + + strlower_m(user); + error_num = strtoul(user, NULL, 16); + + DEBUG(5,("check_name_to_ntstatus_security: Error for user %s was %lx\n", user, error_num)); + + nt_status = NT_STATUS(error_num); + + return nt_status; +} + +/** Module initialisation function */ + +static NTSTATUS auth_init_name_to_ntstatus(struct auth_context *auth_context, const char *param, auth_methods **auth_method) +{ + if (!make_auth_methods(auth_context, auth_method)) + return NT_STATUS_NO_MEMORY; + + (*auth_method)->auth = check_name_to_ntstatus_security; + (*auth_method)->name = "name_to_ntstatus"; + return NT_STATUS_OK; +} + +/** + * Return a 'fixed' challenge instead of a variable one. + * + * The idea of this function is to make packet snifs consistant + * with a fixed challenge, so as to aid debugging. + * + * This module is of no value to end-users. + * + * This module does not actually authenticate the user, but + * just pretenteds to need a specified challenge. + * This module removes *all* security from the challenge-response system + * + * @return NT_STATUS_UNSUCCESSFUL + **/ + +static NTSTATUS check_fixed_challenge_security(const struct auth_context *auth_context, + void *my_private_data, + TALLOC_CTX *mem_ctx, + const auth_usersupplied_info *user_info, + auth_serversupplied_info **server_info) +{ + return NT_STATUS_NOT_IMPLEMENTED; +} + +/**************************************************************************** + Get the challenge out of a password server. +****************************************************************************/ + +static DATA_BLOB auth_get_fixed_challenge(const struct auth_context *auth_context, + void **my_private_data, + TALLOC_CTX *mem_ctx) +{ + const char *challenge = "I am a teapot"; + return data_blob(challenge, 8); +} + + +/** Module initailisation function */ + +static NTSTATUS auth_init_fixed_challenge(struct auth_context *auth_context, const char *param, auth_methods **auth_method) +{ + if (!make_auth_methods(auth_context, auth_method)) + return NT_STATUS_NO_MEMORY; + + (*auth_method)->auth = check_fixed_challenge_security; + (*auth_method)->get_chal = auth_get_fixed_challenge; + (*auth_method)->name = "fixed_challenge"; + return NT_STATUS_OK; +} +#endif /* DEVELOPER */ + +NTSTATUS auth_builtin_init(void) +{ + smb_register_auth(AUTH_INTERFACE_VERSION, "guest", auth_init_guest); +#ifdef DEVELOPER + smb_register_auth(AUTH_INTERFACE_VERSION, "fixed_challenge", auth_init_fixed_challenge); + smb_register_auth(AUTH_INTERFACE_VERSION, "name_to_ntstatus", auth_init_name_to_ntstatus); +#endif + return NT_STATUS_OK; +} |