diff options
Diffstat (limited to 'source4/auth')
| -rw-r--r-- | source4/auth/auth.c | 1 | ||||
| -rw-r--r-- | source4/auth/auth.h | 1 | ||||
| -rw-r--r-- | source4/auth/auth_sam.c | 524 | ||||
| -rw-r--r-- | source4/auth/config.mk | 18 | ||||
| -rw-r--r-- | source4/auth/gensec/config.mk | 2 | ||||
| -rw-r--r-- | source4/auth/kerberos/kerberos_pac.c | 1 | ||||
| -rw-r--r-- | source4/auth/ntlmssp/config.mk | 2 | ||||
| -rw-r--r-- | source4/auth/sam.c | 395 |
8 files changed, 494 insertions, 450 deletions
diff --git a/source4/auth/auth.c b/source4/auth/auth.c index 140aa57b15..dfef0c8c4d 100644 --- a/source4/auth/auth.c +++ b/source4/auth/auth.c @@ -21,6 +21,7 @@ #include "includes.h" #include "dlinklist.h" +#include "lib/ldb/include/ldb.h" #include "auth/auth.h" #include "lib/events/events.h" #include "build.h" diff --git a/source4/auth/auth.h b/source4/auth/auth.h index 80360a7cb4..724ccf91ca 100644 --- a/source4/auth/auth.h +++ b/source4/auth/auth.h @@ -25,6 +25,7 @@ #include "libcli/auth/credentials.h" #include "auth/gensec/gensec.h" #include "auth/gensec/spnego.h" +#include "lib/ldb/include/ldb.h" /* modules can use the following to determine if the interface has changed * please increment the version number after each interface change diff --git a/source4/auth/auth_sam.c b/source4/auth/auth_sam.c index 22e093581c..f6b8316eb7 100644 --- a/source4/auth/auth_sam.c +++ b/source4/auth/auth_sam.c @@ -22,246 +22,16 @@ #include "includes.h" #include "system/time.h" -#include "auth/auth.h" #include "db_wrap.h" +#include "auth/auth.h" +#include "auth/auth_sam.h" #include "dsdb/samdb/samdb.h" #include "libcli/security/security.h" #include "libcli/ldap/ldap.h" #include "librpc/gen_ndr/ndr_security.h" -static const char *user_attrs[] = { - /* requried 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, -}; - -static const char *domain_ref_attrs[] = {"nETBIOSName", "nCName", - "dnsRoot", "objectClass", NULL}; - -/**************************************************************************** - Do a specific test for an smb password being correct, given a smb_password and - the lanman and NT responses. -****************************************************************************/ -static NTSTATUS authsam_password_ok(struct auth_context *auth_context, - TALLOC_CTX *mem_ctx, - uint16_t acct_flags, - const struct samr_Password *lm_pwd, - const struct samr_Password *nt_pwd, - const struct auth_usersupplied_info *user_info, - DATA_BLOB *user_sess_key, - DATA_BLOB *lm_sess_key) -{ - NTSTATUS status; - - if (acct_flags & ACB_PWNOTREQ) { - if (lp_null_passwords()) { - DEBUG(3,("Account for user '%s' has no password and null passwords are allowed.\n", - user_info->mapped.account_name)); - return NT_STATUS_OK; - } else { - DEBUG(3,("Account for user '%s' has no password and null passwords are NOT allowed.\n", - user_info->mapped.account_name)); - return NT_STATUS_LOGON_FAILURE; - } - } - - switch (user_info->password_state) { - case AUTH_PASSWORD_PLAIN: - { - const struct auth_usersupplied_info *user_info_temp; - status = encrypt_user_info(mem_ctx, auth_context, - AUTH_PASSWORD_HASH, - user_info, &user_info_temp); - if (!NT_STATUS_IS_OK(status)) { - DEBUG(1, ("Failed to convert plaintext password to password HASH: %s\n", nt_errstr(status))); - return status; - } - user_info = user_info_temp; - - /*fall through*/ - } - case AUTH_PASSWORD_HASH: - *lm_sess_key = data_blob(NULL, 0); - *user_sess_key = data_blob(NULL, 0); - status = hash_password_check(mem_ctx, - user_info->password.hash.lanman, - user_info->password.hash.nt, - user_info->mapped.account_name, - lm_pwd, nt_pwd); - NT_STATUS_NOT_OK_RETURN(status); - break; - - case AUTH_PASSWORD_RESPONSE: - status = ntlm_password_check(mem_ctx, user_info->logon_parameters, - &auth_context->challenge.data, - &user_info->password.response.lanman, - &user_info->password.response.nt, - user_info->mapped.account_name, - user_info->client.account_name, - user_info->client.domain_name, - lm_pwd, nt_pwd, - user_sess_key, lm_sess_key); - NT_STATUS_NOT_OK_RETURN(status); - break; - } - - if (user_sess_key && user_sess_key->data) { - talloc_steal(auth_context, user_sess_key->data); - } - if (lm_sess_key && lm_sess_key->data) { - talloc_steal(auth_context, lm_sess_key->data); - } - - return NT_STATUS_OK; -} - - -/**************************************************************************** - Do a specific test for a SAM_ACCOUNT being vaild for this connection - (ie not disabled, expired and the like). -****************************************************************************/ -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; -} +extern const char *user_attrs[]; +extern const char *domain_ref_attrs[]; /**************************************************************************** Look for the specified user in the sam, return ldb result structures @@ -381,6 +151,85 @@ static NTSTATUS authsam_search_account(TALLOC_CTX *mem_ctx, struct ldb_context * return NT_STATUS_OK; } +/**************************************************************************** + Do a specific test for an smb password being correct, given a smb_password and + the lanman and NT responses. +****************************************************************************/ +static NTSTATUS authsam_password_ok(struct auth_context *auth_context, + TALLOC_CTX *mem_ctx, + uint16_t acct_flags, + const struct samr_Password *lm_pwd, + const struct samr_Password *nt_pwd, + const struct auth_usersupplied_info *user_info, + DATA_BLOB *user_sess_key, + DATA_BLOB *lm_sess_key) +{ + NTSTATUS status; + + if (acct_flags & ACB_PWNOTREQ) { + if (lp_null_passwords()) { + DEBUG(3,("Account for user '%s' has no password and null passwords are allowed.\n", + user_info->mapped.account_name)); + return NT_STATUS_OK; + } else { + DEBUG(3,("Account for user '%s' has no password and null passwords are NOT allowed.\n", + user_info->mapped.account_name)); + return NT_STATUS_LOGON_FAILURE; + } + } + + switch (user_info->password_state) { + case AUTH_PASSWORD_PLAIN: + { + const struct auth_usersupplied_info *user_info_temp; + status = encrypt_user_info(mem_ctx, auth_context, + AUTH_PASSWORD_HASH, + user_info, &user_info_temp); + if (!NT_STATUS_IS_OK(status)) { + DEBUG(1, ("Failed to convert plaintext password to password HASH: %s\n", nt_errstr(status))); + return status; + } + user_info = user_info_temp; + + /*fall through*/ + } + case AUTH_PASSWORD_HASH: + *lm_sess_key = data_blob(NULL, 0); + *user_sess_key = data_blob(NULL, 0); + status = hash_password_check(mem_ctx, + user_info->password.hash.lanman, + user_info->password.hash.nt, + user_info->mapped.account_name, + lm_pwd, nt_pwd); + NT_STATUS_NOT_OK_RETURN(status); + break; + + case AUTH_PASSWORD_RESPONSE: + status = ntlm_password_check(mem_ctx, user_info->logon_parameters, + &auth_context->challenge.data, + &user_info->password.response.lanman, + &user_info->password.response.nt, + user_info->mapped.account_name, + user_info->client.account_name, + user_info->client.domain_name, + lm_pwd, nt_pwd, + user_sess_key, lm_sess_key); + NT_STATUS_NOT_OK_RETURN(status); + break; + } + + if (user_sess_key && user_sess_key->data) { + talloc_steal(auth_context, user_sess_key->data); + } + if (lm_sess_key && lm_sess_key->data) { + talloc_steal(auth_context, lm_sess_key->data); + } + + return NT_STATUS_OK; +} + + + static NTSTATUS authsam_authenticate(struct auth_context *auth_context, TALLOC_CTX *mem_ctx, struct ldb_context *sam_ctx, struct ldb_message **msgs, @@ -424,214 +273,7 @@ static NTSTATUS authsam_authenticate(struct auth_context *auth_context, return nt_status; } -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; -} static NTSTATUS authsam_check_password_internals(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, diff --git a/source4/auth/config.mk b/source4/auth/config.mk index 6586fbfe5d..7e2a0ea2cc 100644 --- a/source4/auth/config.mk +++ b/source4/auth/config.mk @@ -4,19 +4,23 @@ include kerberos/config.mk include ntlmssp/config.mk include credentials/config.mk +[SUBSYSTEM::auth_sam] +PRIVATE_PROTO_HEADER = auth_sam.h +OBJ_FILES = \ + sam.o \ + auth_sam_reply.o +PUBLIC_DEPENDENCIES = \ + SAMDB + ####################### # Start MODULE auth_sam -[MODULE::auth_sam] +[MODULE::auth_sam_module] # gensec_krb5 and gensec_gssapi depend on it -OUTPUT_TYPE = MERGEDOBJ -PRIVATE_PROTO_HEADER = auth_sam.h INIT_FUNCTION = auth_sam_init SUBSYSTEM = auth -OBJ_FILES = \ - auth_sam.o \ - auth_sam_reply.o +OBJ_FILES = auth_sam.o PUBLIC_DEPENDENCIES = \ - SAMDB + SAMDB auth_sam # End MODULE auth_sam ####################### diff --git a/source4/auth/gensec/config.mk b/source4/auth/gensec/config.mk index 38351c7efb..2aad8eb4b1 100644 --- a/source4/auth/gensec/config.mk +++ b/source4/auth/gensec/config.mk @@ -52,7 +52,7 @@ INIT_FUNCTION = gensec_schannel_init OBJ_FILES = schannel.o \ schannel_sign.o PUBLIC_DEPENDENCIES = auth SCHANNELDB NDR_SCHANNEL -OUTPUT_TYPE = MERGEDOBJ +OUTPUT_TYPE = INTEGRATED # End MODULE gensec_schannel ################################################ diff --git a/source4/auth/kerberos/kerberos_pac.c b/source4/auth/kerberos/kerberos_pac.c index 673137fd5c..c0733297a4 100644 --- a/source4/auth/kerberos/kerberos_pac.c +++ b/source4/auth/kerberos/kerberos_pac.c @@ -28,6 +28,7 @@ #include "system/kerberos.h" #include "auth/kerberos/kerberos.h" #include "librpc/gen_ndr/ndr_krb5pac.h" +#include "auth/auth.h" #include "auth/auth_sam.h" static krb5_error_code check_pac_checksum(TALLOC_CTX *mem_ctx, diff --git a/source4/auth/ntlmssp/config.mk b/source4/auth/ntlmssp/config.mk index fc9ccd91f6..b1b00166e6 100644 --- a/source4/auth/ntlmssp/config.mk +++ b/source4/auth/ntlmssp/config.mk @@ -13,6 +13,6 @@ OBJ_FILES = ntlmssp.o \ ntlmssp_client.o \ ntlmssp_server.o PUBLIC_DEPENDENCIES = auth MSRPC_PARSE -OUTPUT_TYPE = MERGEDOBJ +OUTPUT_TYPE = INTEGRATED # End MODULE gensec_ntlmssp ################################################ 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; +} |