From 4340fc2d9e9f84368818e774b0817b100eb57232 Mon Sep 17 00:00:00 2001 From: Jelmer Vernooij Date: Mon, 26 Nov 2007 02:25:20 +0100 Subject: r26127: Move session code out of auth_util.c. No longer making it part of auth but making it usable independently will be the next step. (This used to be commit b3fcb8e8103304fede865b02ca5169d5793a571d) --- source4/auth/session.c | 328 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 328 insertions(+) create mode 100644 source4/auth/session.c (limited to 'source4/auth/session.c') diff --git a/source4/auth/session.c b/source4/auth/session.c new file mode 100644 index 00000000000..1a87e98bedf --- /dev/null +++ b/source4/auth/session.c @@ -0,0 +1,328 @@ +/* + Unix SMB/CIFS implementation. + Authentication utility functions + Copyright (C) Andrew Tridgell 1992-1998 + Copyright (C) Andrew Bartlett 2001 + Copyright (C) Jeremy Allison 2000-2001 + Copyright (C) Rafal Szczesniak 2002 + Copyright (C) Stefan Metzmacher 2005 + + 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 . +*/ + +#include "includes.h" +#include "auth/auth.h" +#include "libcli/security/security.h" +#include "libcli/auth/libcli_auth.h" +#include "dsdb/samdb/samdb.h" +#include "auth/credentials/credentials.h" +#include "param/param.h" + +struct auth_session_info *anonymous_session(TALLOC_CTX *mem_ctx) +{ + NTSTATUS nt_status; + struct auth_session_info *session_info = NULL; + nt_status = auth_anonymous_session_info(mem_ctx, &session_info); + if (!NT_STATUS_IS_OK(nt_status)) { + return NULL; + } + return session_info; +} + +NTSTATUS auth_anonymous_session_info(TALLOC_CTX *parent_ctx, + struct auth_session_info **_session_info) +{ + NTSTATUS nt_status; + struct auth_serversupplied_info *server_info = NULL; + struct auth_session_info *session_info = NULL; + TALLOC_CTX *mem_ctx = talloc_new(parent_ctx); + + nt_status = auth_anonymous_server_info(mem_ctx, + &server_info); + if (!NT_STATUS_IS_OK(nt_status)) { + talloc_free(mem_ctx); + return nt_status; + } + + /* references the server_info into the session_info */ + nt_status = auth_generate_session_info(parent_ctx, server_info, &session_info); + talloc_free(mem_ctx); + + NT_STATUS_NOT_OK_RETURN(nt_status); + + session_info->credentials = cli_credentials_init(session_info); + if (!session_info->credentials) { + return NT_STATUS_NO_MEMORY; + } + + cli_credentials_set_conf(session_info->credentials, global_loadparm); + cli_credentials_set_anonymous(session_info->credentials); + + *_session_info = session_info; + + return NT_STATUS_OK; +} + +NTSTATUS auth_anonymous_server_info(TALLOC_CTX *mem_ctx, struct auth_serversupplied_info **_server_info) +{ + struct auth_serversupplied_info *server_info; + server_info = talloc(mem_ctx, struct auth_serversupplied_info); + NT_STATUS_HAVE_NO_MEMORY(server_info); + + server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS); + NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid); + + /* is this correct? */ + server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_GUESTS); + NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid); + + server_info->n_domain_groups = 0; + server_info->domain_groups = NULL; + + /* annoying, but the Anonymous really does have a session key, + and it is all zeros! */ + server_info->user_session_key = data_blob_talloc(server_info, NULL, 16); + NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data); + + server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16); + NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data); + + data_blob_clear(&server_info->user_session_key); + data_blob_clear(&server_info->lm_session_key); + + server_info->account_name = talloc_strdup(server_info, "ANONYMOUS LOGON"); + NT_STATUS_HAVE_NO_MEMORY(server_info->account_name); + + server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY"); + NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name); + + server_info->full_name = talloc_strdup(server_info, "Anonymous Logon"); + NT_STATUS_HAVE_NO_MEMORY(server_info->full_name); + + server_info->logon_script = talloc_strdup(server_info, ""); + NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script); + + server_info->profile_path = talloc_strdup(server_info, ""); + NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path); + + server_info->home_directory = talloc_strdup(server_info, ""); + NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory); + + server_info->home_drive = talloc_strdup(server_info, ""); + NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive); + + server_info->logon_server = talloc_strdup(server_info, lp_netbios_name(global_loadparm)); + NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server); + + server_info->last_logon = 0; + server_info->last_logoff = 0; + server_info->acct_expiry = 0; + server_info->last_password_change = 0; + server_info->allow_password_change = 0; + server_info->force_password_change = 0; + + server_info->logon_count = 0; + server_info->bad_password_count = 0; + + server_info->acct_flags = ACB_NORMAL; + + server_info->authenticated = false; + + *_server_info = server_info; + + return NT_STATUS_OK; +} + +NTSTATUS auth_generate_session_info(TALLOC_CTX *mem_ctx, + struct auth_serversupplied_info *server_info, + struct auth_session_info **_session_info) +{ + struct auth_session_info *session_info; + NTSTATUS nt_status; + + session_info = talloc(mem_ctx, struct auth_session_info); + NT_STATUS_HAVE_NO_MEMORY(session_info); + + session_info->server_info = talloc_reference(session_info, server_info); + + /* unless set otherwise, the session key is the user session + * key from the auth subsystem */ + session_info->session_key = server_info->user_session_key; + + nt_status = security_token_create(session_info, + server_info->account_sid, + server_info->primary_group_sid, + server_info->n_domain_groups, + server_info->domain_groups, + server_info->authenticated, + &session_info->security_token); + NT_STATUS_NOT_OK_RETURN(nt_status); + + session_info->credentials = NULL; + + *_session_info = session_info; + return NT_STATUS_OK; +} + +/** + * prints a struct auth_session_info security token to debug output. + */ +void auth_session_info_debug(int dbg_lev, + const struct auth_session_info *session_info) +{ + if (!session_info) { + DEBUG(dbg_lev, ("Session Info: (NULL)\n")); + return; + } + + security_token_debug(dbg_lev, session_info->security_token); +} + +/** + * Make a server_info struct from the info3 returned by a domain logon + */ +NTSTATUS make_server_info_netlogon_validation(TALLOC_CTX *mem_ctx, + const char *account_name, + uint16_t validation_level, + union netr_Validation *validation, + struct auth_serversupplied_info **_server_info) +{ + struct auth_serversupplied_info *server_info; + struct netr_SamBaseInfo *base = NULL; + int i; + + switch (validation_level) { + case 2: + if (!validation || !validation->sam2) { + return NT_STATUS_INVALID_PARAMETER; + } + base = &validation->sam2->base; + break; + case 3: + if (!validation || !validation->sam3) { + return NT_STATUS_INVALID_PARAMETER; + } + base = &validation->sam3->base; + break; + case 6: + if (!validation || !validation->sam6) { + return NT_STATUS_INVALID_PARAMETER; + } + base = &validation->sam6->base; + break; + default: + return NT_STATUS_INVALID_LEVEL; + } + + server_info = talloc(mem_ctx, struct auth_serversupplied_info); + NT_STATUS_HAVE_NO_MEMORY(server_info); + + /* + Here is where we should check the list of + trusted domains, and verify that the SID + matches. + */ + server_info->account_sid = dom_sid_add_rid(server_info, base->domain_sid, base->rid); + NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid); + + + server_info->primary_group_sid = dom_sid_add_rid(server_info, base->domain_sid, base->primary_gid); + NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid); + + server_info->n_domain_groups = base->groups.count; + if (base->groups.count) { + server_info->domain_groups = talloc_array(server_info, struct dom_sid*, base->groups.count); + NT_STATUS_HAVE_NO_MEMORY(server_info->domain_groups); + } else { + server_info->domain_groups = NULL; + } + + for (i = 0; i < base->groups.count; i++) { + server_info->domain_groups[i] = dom_sid_add_rid(server_info, base->domain_sid, base->groups.rids[i].rid); + NT_STATUS_HAVE_NO_MEMORY(server_info->domain_groups[i]); + } + + /* Copy 'other' sids. We need to do sid filtering here to + prevent possible elevation of privileges. See: + + http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp + */ + + if (validation_level == 3) { + struct dom_sid **dgrps = server_info->domain_groups; + size_t sidcount = server_info->n_domain_groups + validation->sam3->sidcount; + size_t n_dgrps = server_info->n_domain_groups; + + if (validation->sam3->sidcount > 0) { + dgrps = talloc_realloc(server_info, dgrps, struct dom_sid*, sidcount); + NT_STATUS_HAVE_NO_MEMORY(dgrps); + + for (i = 0; i < validation->sam3->sidcount; i++) { + dgrps[n_dgrps + i] = talloc_reference(dgrps, validation->sam3->sids[i].sid); + } + } + + server_info->n_domain_groups = sidcount; + server_info->domain_groups = dgrps; + + /* Where are the 'global' sids?... */ + } + + if (base->account_name.string) { + server_info->account_name = talloc_reference(server_info, base->account_name.string); + } else { + server_info->account_name = talloc_strdup(server_info, account_name); + NT_STATUS_HAVE_NO_MEMORY(server_info->account_name); + } + + server_info->domain_name = talloc_reference(server_info, base->domain.string); + server_info->full_name = talloc_reference(server_info, base->full_name.string); + server_info->logon_script = talloc_reference(server_info, base->logon_script.string); + server_info->profile_path = talloc_reference(server_info, base->profile_path.string); + server_info->home_directory = talloc_reference(server_info, base->home_directory.string); + server_info->home_drive = talloc_reference(server_info, base->home_drive.string); + server_info->logon_server = talloc_reference(server_info, base->logon_server.string); + server_info->last_logon = base->last_logon; + server_info->last_logoff = base->last_logoff; + server_info->acct_expiry = base->acct_expiry; + server_info->last_password_change = base->last_password_change; + server_info->allow_password_change = base->allow_password_change; + server_info->force_password_change = base->force_password_change; + server_info->logon_count = base->logon_count; + server_info->bad_password_count = base->bad_password_count; + server_info->acct_flags = base->acct_flags; + + server_info->authenticated = true; + + /* ensure we are never given NULL session keys */ + + if (all_zero(base->key.key, sizeof(base->key.key))) { + server_info->user_session_key = data_blob(NULL, 0); + } else { + server_info->user_session_key = data_blob_talloc(server_info, base->key.key, sizeof(base->key.key)); + NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data); + } + + if (all_zero(base->LMSessKey.key, sizeof(base->LMSessKey.key))) { + server_info->lm_session_key = data_blob(NULL, 0); + } else { + server_info->lm_session_key = data_blob_talloc(server_info, base->LMSessKey.key, sizeof(base->LMSessKey.key)); + NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data); + } + + *_server_info = server_info; + return NT_STATUS_OK; +} + + -- cgit v1.2.1