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author | Jelmer Vernooij <jelmer@samba.org> | 2006-04-27 19:50:13 +0000 |
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committer | Gerald (Jerry) Carter <jerry@samba.org> | 2007-10-10 14:05:04 -0500 |
commit | 620d759f49f4b648d0fa4a84e67f1cecbbdd0f06 (patch) | |
tree | 15a768135a197cdd7b3acd369c029ce9248e9012 /source4/auth/sam.c | |
parent | 710ea949886dd57c66dc6d397e0ea41c89736107 (diff) | |
download | samba-620d759f49f4b648d0fa4a84e67f1cecbbdd0f06.tar.gz samba-620d759f49f4b648d0fa4a84e67f1cecbbdd0f06.tar.bz2 samba-620d759f49f4b648d0fa4a84e67f1cecbbdd0f06.zip |
r15298: Fix the build using a few hacks in the build system.
Recursive dependencies are now forbidden (the build system
will bail out if there are any).
I've split up auth_sam.c into auth_sam.c and sam.c. Andrew,
please rename sam.c / move its contents to whatever/wherever you think suits
best.
(This used to be commit 6646384aaf3e7fa2aa798c3e564b94b0617ec4d0)
Diffstat (limited to 'source4/auth/sam.c')
-rw-r--r-- | source4/auth/sam.c | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/source4/auth/sam.c b/source4/auth/sam.c new file mode 100644 index 0000000000..a40e844f85 --- /dev/null +++ b/source4/auth/sam.c @@ -0,0 +1,395 @@ +/* + Unix SMB/CIFS implementation. + Password and authentication handling + Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2004 + Copyright (C) Gerald Carter 2003 + 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 2 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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "includes.h" +#include "system/time.h" +#include "auth/auth.h" +#include "db_wrap.h" +#include "dsdb/samdb/samdb.h" +#include "libcli/security/security.h" +#include "libcli/ldap/ldap.h" +#include "librpc/gen_ndr/ndr_security.h" + +const char *user_attrs[] = { + /* required for the krb5 kdc */ + "objectClass", + "sAMAccountName", + "userPrincipalName", + "servicePrincipalName", + "msDS-KeyVersionNumber", + "krb5Key", + + /* passwords */ + "lmPwdHash", + "ntPwdHash", + + "userAccountControl", + + "pwdLastSet", + "accountExpires", + + "objectSid", + + /* check 'allowed workstations' */ + "userWorkstations", + + /* required for server_info, not access control: */ + "displayName", + "scriptPath", + "profilePath", + "homeDirectory", + "homeDrive", + "lastLogon", + "lastLogoff", + "accountExpires", + "badPwdCount", + "logonCount", + "primaryGroupID", + NULL, +}; + +const char *domain_ref_attrs[] = {"nETBIOSName", "nCName", + "dnsRoot", "objectClass", NULL}; + + +/**************************************************************************** + Do a specific test for a SAM_ACCOUNT being vaild for this connection + (ie not disabled, expired and the like). +****************************************************************************/ +_PUBLIC_ NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx, + struct ldb_context *sam_ctx, + uint32_t logon_parameters, + struct ldb_message *msg, + struct ldb_message *msg_domain_ref, + const char *logon_workstation, + const char *name_for_logs) +{ + uint16_t acct_flags; + const char *workstation_list; + NTTIME acct_expiry; + NTTIME must_change_time; + NTTIME last_set_time; + + struct ldb_dn *domain_dn = samdb_result_dn(mem_ctx, msg_domain_ref, "nCName", ldb_dn_new(mem_ctx)); + + NTTIME now; + DEBUG(4,("authsam_account_ok: Checking SMB password for user %s\n", name_for_logs)); + + acct_flags = samdb_result_acct_flags(msg, "userAccountControl"); + + acct_expiry = samdb_result_nttime(msg, "accountExpires", 0); + must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx, + domain_dn, msg); + last_set_time = samdb_result_nttime(msg, "pwdLastSet", 0); + + workstation_list = samdb_result_string(msg, "userWorkstations", NULL); + + /* Quit if the account was disabled. */ + if (acct_flags & ACB_DISABLED) { + DEBUG(1,("authsam_account_ok: Account for user '%s' was disabled.\n", name_for_logs)); + return NT_STATUS_ACCOUNT_DISABLED; + } + + /* Quit if the account was locked out. */ + if (acct_flags & ACB_AUTOLOCK) { + DEBUG(1,("authsam_account_ok: Account for user %s was locked out.\n", name_for_logs)); + return NT_STATUS_ACCOUNT_LOCKED_OUT; + } + + /* Test account expire time */ + unix_to_nt_time(&now, time(NULL)); + if (now > acct_expiry) { + DEBUG(1,("authsam_account_ok: Account for user '%s' has expired.\n", name_for_logs)); + DEBUG(3,("authsam_account_ok: Account expired at '%s'.\n", + nt_time_string(mem_ctx, acct_expiry))); + return NT_STATUS_ACCOUNT_EXPIRED; + } + + if (!(acct_flags & ACB_PWNOEXP)) { + /* check for immediate expiry "must change at next logon" */ + if (must_change_time == 0 && last_set_time != 0) { + DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n", + name_for_logs)); + return NT_STATUS_PASSWORD_MUST_CHANGE; + } + + /* check for expired password */ + if ((must_change_time != 0) && (must_change_time < now)) { + DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n", + name_for_logs)); + DEBUG(1,("sam_account_ok: Password expired at '%s' unix time.\n", + nt_time_string(mem_ctx, must_change_time))); + return NT_STATUS_PASSWORD_EXPIRED; + } + } + + /* Test workstation. Workstation list is comma separated. */ + if (logon_workstation && workstation_list && *workstation_list) { + BOOL invalid_ws = True; + int i; + const char **workstations = str_list_make(mem_ctx, workstation_list, ","); + + for (i = 0; workstations && workstations[i]; i++) { + DEBUG(10,("sam_account_ok: checking for workstation match '%s' and '%s'\n", + workstations[i], logon_workstation)); + + if (strequal(workstations[i], logon_workstation) == 0) { + invalid_ws = False; + break; + } + } + + talloc_free(workstations); + + if (invalid_ws) { + return NT_STATUS_INVALID_WORKSTATION; + } + } + + if (acct_flags & ACB_DOMTRUST) { + DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", name_for_logs)); + return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT; + } + + if (!(logon_parameters & MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT)) { + if (acct_flags & ACB_SVRTRUST) { + DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", name_for_logs)); + return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT; + } + } + if (!(logon_parameters & MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT)) { + if (acct_flags & ACB_WSTRUST) { + DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", name_for_logs)); + return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT; + } + } + + return NT_STATUS_OK; +} + +_PUBLIC_ NTSTATUS authsam_make_server_info(TALLOC_CTX *mem_ctx, struct ldb_context *sam_ctx, + struct ldb_message *msg, + struct ldb_message *msg_domain_ref, + DATA_BLOB user_sess_key, DATA_BLOB lm_sess_key, + struct auth_serversupplied_info **_server_info) +{ + struct auth_serversupplied_info *server_info; + struct ldb_message **group_msgs; + int group_ret; + const char *group_attrs[3] = { "sAMAccountType", "objectSid", NULL }; + /* find list of sids */ + struct dom_sid **groupSIDs = NULL; + struct dom_sid *account_sid; + struct dom_sid *primary_group_sid; + const char *str; + struct ldb_dn *ncname; + int i; + uint_t rid; + TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx); + + group_ret = gendb_search(sam_ctx, + tmp_ctx, NULL, &group_msgs, group_attrs, + "(&(member=%s)(sAMAccountType=*))", + ldb_dn_linearize(tmp_ctx, msg->dn)); + if (group_ret == -1) { + talloc_free(tmp_ctx); + return NT_STATUS_INTERNAL_DB_CORRUPTION; + } + + server_info = talloc(mem_ctx, struct auth_serversupplied_info); + NT_STATUS_HAVE_NO_MEMORY(server_info); + + if (group_ret > 0) { + groupSIDs = talloc_array(server_info, struct dom_sid *, group_ret); + NT_STATUS_HAVE_NO_MEMORY(groupSIDs); + } + + /* Need to unroll some nested groups, but not aliases */ + for (i = 0; i < group_ret; i++) { + groupSIDs[i] = samdb_result_dom_sid(groupSIDs, + group_msgs[i], "objectSid"); + NT_STATUS_HAVE_NO_MEMORY(groupSIDs[i]); + } + + talloc_free(tmp_ctx); + + account_sid = samdb_result_dom_sid(server_info, msg, "objectSid"); + NT_STATUS_HAVE_NO_MEMORY(account_sid); + + primary_group_sid = dom_sid_dup(server_info, account_sid); + NT_STATUS_HAVE_NO_MEMORY(primary_group_sid); + + rid = samdb_result_uint(msg, "primaryGroupID", ~0); + if (rid == ~0) { + if (group_ret > 0) { + primary_group_sid = groupSIDs[0]; + } else { + primary_group_sid = NULL; + } + } else { + primary_group_sid->sub_auths[primary_group_sid->num_auths-1] = rid; + } + + server_info->account_sid = account_sid; + server_info->primary_group_sid = primary_group_sid; + + server_info->n_domain_groups = group_ret; + server_info->domain_groups = groupSIDs; + + server_info->account_name = talloc_steal(server_info, samdb_result_string(msg, "sAMAccountName", NULL)); + + server_info->domain_name = talloc_steal(server_info, samdb_result_string(msg_domain_ref, "nETBIOSName", NULL)); + + str = samdb_result_string(msg, "displayName", ""); + server_info->full_name = talloc_strdup(server_info, str); + NT_STATUS_HAVE_NO_MEMORY(server_info->full_name); + + str = samdb_result_string(msg, "scriptPath", ""); + server_info->logon_script = talloc_strdup(server_info, str); + NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script); + + str = samdb_result_string(msg, "profilePath", ""); + server_info->profile_path = talloc_strdup(server_info, str); + NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path); + + str = samdb_result_string(msg, "homeDirectory", ""); + server_info->home_directory = talloc_strdup(server_info, str); + NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory); + + str = samdb_result_string(msg, "homeDrive", ""); + server_info->home_drive = talloc_strdup(server_info, str); + NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive); + + server_info->logon_server = talloc_strdup(server_info, lp_netbios_name()); + NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server); + + server_info->last_logon = samdb_result_nttime(msg, "lastLogon", 0); + server_info->last_logoff = samdb_result_nttime(msg, "lastLogoff", 0); + server_info->acct_expiry = samdb_result_nttime(msg, "accountExpires", 0); + server_info->last_password_change = samdb_result_nttime(msg, "pwdLastSet", 0); + + ncname = samdb_result_dn(mem_ctx, msg_domain_ref, "nCName", NULL); + if (!ncname) { + return NT_STATUS_INTERNAL_DB_CORRUPTION; + } + server_info->allow_password_change + = samdb_result_allow_password_change(sam_ctx, mem_ctx, + ncname, msg, "pwdLastSet"); + server_info->force_password_change + = samdb_result_force_password_change(sam_ctx, mem_ctx, + ncname, msg); + + server_info->logon_count = samdb_result_uint(msg, "logonCount", 0); + server_info->bad_password_count = samdb_result_uint(msg, "badPwdCount", 0); + + server_info->acct_flags = samdb_result_acct_flags(msg, "userAccountControl"); + + server_info->user_session_key = user_sess_key; + server_info->lm_session_key = lm_sess_key; + + server_info->authenticated = True; + + *_server_info = server_info; + + return NT_STATUS_OK; +} + +_PUBLIC_ NTSTATUS sam_get_results_principal(struct ldb_context *sam_ctx, + TALLOC_CTX *mem_ctx, const char *principal, + struct ldb_message ***msgs, + struct ldb_message ***msgs_domain_ref) +{ + struct ldb_dn *user_dn, *domain_dn; + NTSTATUS nt_status; + TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx); + int ret; + + if (!tmp_ctx) { + return NT_STATUS_NO_MEMORY; + } + + nt_status = crack_user_principal_name(sam_ctx, tmp_ctx, principal, &user_dn, &domain_dn); + if (!NT_STATUS_IS_OK(nt_status)) { + talloc_free(tmp_ctx); + return nt_status; + } + + /* grab domain info from the reference */ + ret = gendb_search(sam_ctx, tmp_ctx, NULL, msgs_domain_ref, domain_ref_attrs, + "(ncName=%s)", ldb_dn_linearize(tmp_ctx, domain_dn)); + + if (ret != 1) { + talloc_free(tmp_ctx); + return NT_STATUS_INTERNAL_DB_CORRUPTION; + } + + /* pull the user attributes */ + ret = gendb_search_dn(sam_ctx, tmp_ctx, user_dn, msgs, user_attrs); + if (ret != 1) { + talloc_free(tmp_ctx); + return NT_STATUS_INTERNAL_DB_CORRUPTION; + } + talloc_steal(mem_ctx, *msgs); + talloc_steal(mem_ctx, *msgs_domain_ref); + talloc_free(tmp_ctx); + + return NT_STATUS_OK; +} + +/* Used in the gensec_gssapi and gensec_krb5 server-side code, where the PAC isn't available */ +NTSTATUS sam_get_server_info_principal(TALLOC_CTX *mem_ctx, const char *principal, + struct auth_serversupplied_info **server_info) +{ + NTSTATUS nt_status; + DATA_BLOB user_sess_key = data_blob(NULL, 0); + DATA_BLOB lm_sess_key = data_blob(NULL, 0); + + struct ldb_message **msgs; + struct ldb_message **msgs_domain_ref; + struct ldb_context *sam_ctx; + + TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx); + if (!tmp_ctx) { + return NT_STATUS_NO_MEMORY; + } + + sam_ctx = samdb_connect(tmp_ctx, system_session(tmp_ctx)); + if (sam_ctx == NULL) { + talloc_free(tmp_ctx); + return NT_STATUS_INVALID_SYSTEM_SERVICE; + } + + nt_status = sam_get_results_principal(sam_ctx, tmp_ctx, principal, + &msgs, &msgs_domain_ref); + if (!NT_STATUS_IS_OK(nt_status)) { + return nt_status; + } + + nt_status = authsam_make_server_info(tmp_ctx, sam_ctx, msgs[0], msgs_domain_ref[0], + user_sess_key, lm_sess_key, + server_info); + if (NT_STATUS_IS_OK(nt_status)) { + talloc_steal(mem_ctx, *server_info); + } + talloc_free(tmp_ctx); + return nt_status; +} |