#include "includes.h"
#include "ldb_module.h"
#include "libcli/auth/libcli_auth.h"
+#include "libcli/security/dom_sid.h"
#include "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
#include "dsdb/samdb/samdb.h"
#include "../lib/crypto/crypto.h"
#include "param/param.h"
#include "lib/krb5_wrap/krb5_samba.h"
+#include "auth/common_auth.h"
+#include "lib/messaging/messaging.h"
+
+#ifdef ENABLE_GPGME
+#undef class
+#include <gpgme.h>
+#endif
/* If we have decided there is a reason to work on this request, then
* setup all the password hash types correctly.
struct ldb_request *dom_req;
struct ldb_reply *dom_res;
+ struct ldb_reply *pso_res;
+
struct ldb_reply *search_res;
struct ldb_message *update_msg;
struct dsdb_control_password_change_status *status;
struct dsdb_control_password_change *change;
+ const char **gpg_key_ids;
+
bool pwd_reset;
bool change_status;
bool hash_values;
bool update_password;
bool update_lastset;
bool pwd_last_set_bypass;
+ bool pwd_last_set_default;
+ bool smartcard_reset;
+ const char **userPassword_schemes;
};
struct smb_krb5_context *smb_krb5_context;
- /* infos about the user account */
+ /* info about the user account */
struct {
uint32_t userAccountControl;
NTTIME pwdLastSet;
const char *sAMAccountName;
const char *user_principal_name;
- bool is_computer;
+ bool is_krbtgt;
uint32_t restrictions;
+ struct dom_sid *account_sid;
} u;
/* new credentials and old given credentials */
} g;
};
+static int msg_find_old_and_new_pwd_val(const struct ldb_message *msg,
+ const char *name,
+ enum ldb_request_type operation,
+ const struct ldb_val **new_val,
+ const struct ldb_val **old_val);
+
static int password_hash_bypass(struct ldb_module *module, struct ldb_request *request)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
{
struct ldb_context *ldb;
krb5_error_code krb5_ret;
- krb5_principal salt_principal;
+ char *salt_principal = NULL;
+ char *salt_data = NULL;
krb5_data salt;
krb5_keyblock key;
krb5_data cleartext_data;
+ uint32_t uac_flags = 0;
ldb = ldb_module_get_ctx(io->ac->module);
cleartext_data.data = (char *)io->n.cleartext_utf8->data;
cleartext_data.length = io->n.cleartext_utf8->length;
- /* Many, many thanks to lukeh@padl.com for this
- * algorithm, described in his Nov 10 2004 mail to
- * samba-technical@lists.samba.org */
-
- /*
- * Determine a salting principal
- */
- if (io->u.is_computer) {
- char *name;
- char *saltbody;
-
- name = strlower_talloc(io->ac, io->u.sAMAccountName);
- if (!name) {
- return ldb_oom(ldb);
- }
-
- if (name[strlen(name)-1] == '$') {
- name[strlen(name)-1] = '\0';
- }
-
- saltbody = talloc_asprintf(io->ac, "%s.%s", name,
- io->ac->status->domain_data.dns_domain);
- if (!saltbody) {
- return ldb_oom(ldb);
- }
-
- krb5_ret = smb_krb5_make_principal(io->smb_krb5_context->krb5_context,
- &salt_principal,
- io->ac->status->domain_data.realm,
- "host", saltbody, NULL);
- } else if (io->u.user_principal_name) {
- char *user_principal_name;
- char *p;
-
- user_principal_name = talloc_strdup(io->ac, io->u.user_principal_name);
- if (!user_principal_name) {
- return ldb_oom(ldb);
- }
-
- p = strchr(user_principal_name, '@');
- if (p) {
- p[0] = '\0';
- }
-
- krb5_ret = smb_krb5_make_principal(io->smb_krb5_context->krb5_context,
- &salt_principal,
- io->ac->status->domain_data.realm,
- user_principal_name, NULL);
- } else {
- krb5_ret = smb_krb5_make_principal(io->smb_krb5_context->krb5_context,
- &salt_principal,
- io->ac->status->domain_data.realm,
- io->u.sAMAccountName, NULL);
- }
+ uac_flags = io->u.userAccountControl & UF_ACCOUNT_TYPE_MASK;
+ krb5_ret = smb_krb5_salt_principal(io->ac->status->domain_data.realm,
+ io->u.sAMAccountName,
+ io->u.user_principal_name,
+ uac_flags,
+ io->ac,
+ &salt_principal);
if (krb5_ret) {
ldb_asprintf_errstring(ldb,
"setup_kerberos_keys: "
/*
* create salt from salt_principal
*/
- krb5_ret = smb_krb5_get_pw_salt(io->smb_krb5_context->krb5_context,
- salt_principal, &salt);
- krb5_free_principal(io->smb_krb5_context->krb5_context, salt_principal);
+ krb5_ret = smb_krb5_salt_principal2data(io->smb_krb5_context->krb5_context,
+ salt_principal, io->ac, &salt_data);
if (krb5_ret) {
ldb_asprintf_errstring(ldb,
"setup_kerberos_keys: "
krb5_ret, io->ac));
return LDB_ERR_OPERATIONS_ERROR;
}
- /* create a talloc copy */
- io->g.salt = talloc_strndup(io->ac,
- (char *)salt.data,
- salt.length);
- kerberos_free_data_contents(io->smb_krb5_context->krb5_context, &salt);
- if (!io->g.salt) {
- return ldb_oom(ldb);
- }
+ io->g.salt = salt_data;
+
/* now use the talloced copy of the salt */
salt.data = discard_const(io->g.salt);
salt.length = strlen(io->g.salt);
DATA_BLOB *nt4dom;
} wdigest[] = {
/*
- * See
- * http://technet2.microsoft.com/WindowsServer/en/library/717b450c-f4a0-4cc9-86f4-cc0633aae5f91033.mspx?mfr=true
+ * See 3.1.1.8.11.3.1 WDIGEST_CREDENTIALS Construction
+ * https://msdn.microsoft.com/en-us/library/cc245680.aspx
* for what precalculated hashes are supposed to be stored...
*
* I can't reproduce all values which should contain "Digest" as realm,
.user = &sAMAccountName_l,
.realm = &netbios_domain_u,
},
- /*
+ /*
* sAMAccountName, dns_domain
+ *
+ * TODO:
+ * Windows preserves the case of the DNS domain,
+ * Samba lower cases the domain at provision time
+ * This means that for mixed case Domains, the WDigest08 hash
+ * calculated by Samba differs from that calculated by Windows.
+ * Until we get a real world use case this will remain a known
+ * bug, as changing the case could have unforeseen impacts.
+ *
*/
{
.user = &sAMAccountName,
return LDB_SUCCESS;
}
+#define SHA_SALT_PERMITTED_CHARS "abcdefghijklmnopqrstuvwxyz" \
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
+ "0123456789./"
+#define SHA_SALT_SIZE 16
+#define SHA_256_SCHEME "CryptSHA256"
+#define SHA_512_SCHEME "CryptSHA512"
+#define CRYPT "{CRYPT}"
+#define SHA_ID_LEN 3
+#define SHA_256_ALGORITHM_ID 5
+#define SHA_512_ALGORITHM_ID 6
+#define ROUNDS_PARAMETER "rounds="
+
+/*
+ * Extract the crypt (3) algorithm number and number of hash rounds from the
+ * supplied scheme string
+ */
+static bool parse_scheme(const char *scheme, int *algorithm, int *rounds) {
+
+ const char *rp = NULL; /* Pointer to the 'rounds=' option */
+ char digits[21]; /* digits extracted from the rounds option */
+ int i = 0; /* loop index variable */
+
+ if (strncasecmp(SHA_256_SCHEME, scheme, strlen(SHA_256_SCHEME)) == 0) {
+ *algorithm = SHA_256_ALGORITHM_ID;
+ } else if (strncasecmp(SHA_512_SCHEME, scheme, strlen(SHA_256_SCHEME))
+ == 0) {
+ *algorithm = SHA_512_ALGORITHM_ID;
+ } else {
+ return false;
+ }
+
+ rp = strcasestr(scheme, ROUNDS_PARAMETER);
+ if (rp == NULL) {
+ /* No options specified, use crypt default number of rounds */
+ *rounds = 0;
+ return true;
+ }
+ rp += strlen(ROUNDS_PARAMETER);
+ for (i = 0; isdigit(rp[i]) && i < (sizeof(digits) - 1); i++) {
+ digits[i] = rp[i];
+ }
+ digits[i] = '\0';
+ *rounds = atoi(digits);
+ return true;
+}
+
+/*
+ * Calculate the password hash specified by scheme, and return it in
+ * hash_value
+ */
+static int setup_primary_userPassword_hash(
+ TALLOC_CTX *ctx,
+ struct setup_password_fields_io *io,
+ const char* scheme,
+ struct package_PrimaryUserPasswordValue *hash_value)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
+ const char *salt = NULL; /* Randomly generated salt */
+ const char *cmd = NULL; /* command passed to crypt */
+ const char *hash = NULL; /* password hash generated by crypt */
+ int algorithm = 0; /* crypt hash algorithm number */
+ int rounds = 0; /* The number of hash rounds */
+ DATA_BLOB *hash_blob = NULL;
+ TALLOC_CTX *frame = talloc_stackframe();
+#ifdef HAVE_CRYPT_R
+ struct crypt_data crypt_data; /* working storage used by crypt */
+#endif
+
+ /* Genrate a random password salt */
+ salt = generate_random_str_list(frame,
+ SHA_SALT_SIZE,
+ SHA_SALT_PERMITTED_CHARS);
+ if (salt == NULL) {
+ TALLOC_FREE(frame);
+ return ldb_oom(ldb);
+ }
+
+ /* determine the hashing algoritm and number of rounds*/
+ if (!parse_scheme(scheme, &algorithm, &rounds)) {
+ ldb_asprintf_errstring(
+ ldb,
+ "setup_primary_userPassword: Invalid scheme of [%s] "
+ "specified for 'password hash userPassword schemes' in "
+ "samba.conf",
+ scheme);
+ TALLOC_FREE(frame);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ hash_value->scheme = talloc_strdup(ctx, CRYPT);
+ hash_value->scheme_len = strlen(CRYPT) + 1;
+
+ /* generate the id/salt parameter used by crypt */
+ if (rounds) {
+ cmd = talloc_asprintf(frame,
+ "$%d$rounds=%d$%s",
+ algorithm,
+ rounds,
+ salt);
+ } else {
+ cmd = talloc_asprintf(frame, "$%d$%s", algorithm, salt);
+ }
+
+ /*
+ * Relies on the assertion that cleartext_utf8->data is a zero
+ * terminated UTF-8 string
+ */
+#ifdef HAVE_CRYPT_R
+ hash = crypt_r((char *)io->n.cleartext_utf8->data, cmd, &crypt_data);
+#else
+ /*
+ * No crypt_r falling back to crypt, which is NOT thread safe
+ * Thread safety MT-Unsafe race:crypt
+ */
+ hash = crypt((char *)io->n.cleartext_utf8->data, cmd);
+#endif
+ if (hash == NULL) {
+ char buf[1024];
+ int err = strerror_r(errno, buf, sizeof(buf));
+ if (err != 0) {
+ strlcpy(buf, "Unknown error", sizeof(buf)-1);
+ }
+ ldb_asprintf_errstring(
+ ldb,
+ "setup_primary_userPassword: generation of a %s "
+ "password hash failed: (%s)",
+ scheme,
+ buf);
+ TALLOC_FREE(frame);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ hash_blob = talloc_zero(ctx, DATA_BLOB);
+
+ if (hash_blob == NULL) {
+ TALLOC_FREE(frame);
+ return ldb_oom(ldb);
+ }
+
+ *hash_blob = data_blob_talloc(hash_blob,
+ (const uint8_t *)hash,
+ strlen(hash));
+ if (hash_blob->data == NULL) {
+ TALLOC_FREE(frame);
+ return ldb_oom(ldb);
+ }
+ hash_value->value = hash_blob;
+ TALLOC_FREE(frame);
+ return LDB_SUCCESS;
+}
+
+/*
+ * Calculate the desired extra password hashes
+ */
+static int setup_primary_userPassword(
+ struct setup_password_fields_io *io,
+ const struct supplementalCredentialsBlob *old_scb,
+ struct package_PrimaryUserPasswordBlob *p_userPassword_b)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
+ TALLOC_CTX *frame = talloc_stackframe();
+ int i;
+ int ret;
+
+ /*
+ * Save the current nt_hash, use this to determine if the password
+ * has been changed by windows. Which will invalidate the userPassword
+ * hash. Note once NTLM-Strong-NOWTF becomes available it should be
+ * used in preference to the NT password hash
+ */
+ if (io->g.nt_hash == NULL) {
+ ldb_asprintf_errstring(ldb,
+ "No NT Hash, unable to calculate userPassword hashes");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+ p_userPassword_b->current_nt_hash = *io->g.nt_hash;
+
+ /*
+ * Determine the number of hashes
+ * Note: that currently there is no limit on the number of hashes
+ * no checking is done on the number of schemes specified
+ * or for uniqueness.
+ */
+ p_userPassword_b->num_hashes = 0;
+ for (i = 0; io->ac->userPassword_schemes[i]; i++) {
+ p_userPassword_b->num_hashes++;
+ }
+
+ p_userPassword_b->hashes
+ = talloc_array(io->ac,
+ struct package_PrimaryUserPasswordValue,
+ p_userPassword_b->num_hashes);
+ if (p_userPassword_b->hashes == NULL) {
+ TALLOC_FREE(frame);
+ return ldb_oom(ldb);
+ }
+
+ for (i = 0; io->ac->userPassword_schemes[i]; i++) {
+ ret = setup_primary_userPassword_hash(
+ p_userPassword_b->hashes,
+ io,
+ io->ac->userPassword_schemes[i],
+ &p_userPassword_b->hashes[i]);
+ if (ret != LDB_SUCCESS) {
+ TALLOC_FREE(frame);
+ return ret;
+ }
+ }
+ return LDB_SUCCESS;
+}
+
+
+static int setup_primary_samba_gpg(struct setup_password_fields_io *io,
+ struct package_PrimarySambaGPGBlob *pgb)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
+#ifdef ENABLE_GPGME
+ gpgme_error_t gret;
+ gpgme_ctx_t ctx = NULL;
+ size_t num_keys = str_list_length(io->ac->gpg_key_ids);
+ gpgme_key_t keys[num_keys+1];
+ size_t ki = 0;
+ size_t kr = 0;
+ gpgme_data_t plain_data = NULL;
+ gpgme_data_t crypt_data = NULL;
+ size_t crypt_length = 0;
+ char *crypt_mem = NULL;
+
+ gret = gpgme_new(&ctx);
+ if (gret != GPG_ERR_NO_ERROR) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: gret[%u] %s\n",
+ __location__, __func__,
+ gret, gpgme_strerror(gret));
+ return ldb_module_operr(io->ac->module);
+ }
+
+ gpgme_set_armor(ctx, 1);
+
+ gret = gpgme_data_new_from_mem(&plain_data,
+ (const char *)io->n.cleartext_utf16->data,
+ io->n.cleartext_utf16->length,
+ 0 /* no copy */);
+ if (gret != GPG_ERR_NO_ERROR) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: gret[%u] %s\n",
+ __location__, __func__,
+ gret, gpgme_strerror(gret));
+ gpgme_release(ctx);
+ return ldb_module_operr(io->ac->module);
+ }
+ gret = gpgme_data_new(&crypt_data);
+ if (gret != GPG_ERR_NO_ERROR) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: gret[%u] %s\n",
+ __location__, __func__,
+ gret, gpgme_strerror(gret));
+ gpgme_data_release(plain_data);
+ gpgme_release(ctx);
+ return ldb_module_operr(io->ac->module);
+ }
+
+ for (ki = 0; ki < num_keys; ki++) {
+ const char *key_id = io->ac->gpg_key_ids[ki];
+ size_t len = strlen(key_id);
+
+ keys[ki] = NULL;
+
+ if (len < 16) {
+ ldb_debug(ldb, LDB_DEBUG_FATAL,
+ "%s:%s: ki[%zu] key_id[%s] strlen < 16, "
+ "please specify at least the 64bit key id\n",
+ __location__, __func__,
+ ki, key_id);
+ for (kr = 0; keys[kr] != NULL; kr++) {
+ gpgme_key_release(keys[kr]);
+ }
+ gpgme_data_release(crypt_data);
+ gpgme_data_release(plain_data);
+ gpgme_release(ctx);
+ return ldb_module_operr(io->ac->module);
+ }
+
+ gret = gpgme_get_key(ctx, key_id, &keys[ki], 0 /* public key */);
+ if (gret != GPG_ERR_NO_ERROR) {
+ keys[ki] = NULL;
+ if (gpg_err_source(gret) == GPG_ERR_SOURCE_GPGME
+ && gpg_err_code(gret) == GPG_ERR_EOF) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "Invalid "
+ "'password hash gpg key ids': "
+ "Public Key ID [%s] "
+ "not found in keyring\n",
+ key_id);
+
+ } else {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: ki[%zu] key_id[%s] "
+ "gret[%u] %s\n",
+ __location__, __func__,
+ ki, key_id,
+ gret, gpgme_strerror(gret));
+ }
+ for (kr = 0; keys[kr] != NULL; kr++) {
+ gpgme_key_release(keys[kr]);
+ }
+ gpgme_data_release(crypt_data);
+ gpgme_data_release(plain_data);
+ gpgme_release(ctx);
+ return ldb_module_operr(io->ac->module);
+ }
+ }
+ keys[ki] = NULL;
+
+ gret = gpgme_op_encrypt(ctx, keys,
+ GPGME_ENCRYPT_ALWAYS_TRUST,
+ plain_data, crypt_data);
+ gpgme_data_release(plain_data);
+ plain_data = NULL;
+ for (kr = 0; keys[kr] != NULL; kr++) {
+ gpgme_key_release(keys[kr]);
+ keys[kr] = NULL;
+ }
+ gpgme_release(ctx);
+ ctx = NULL;
+ if (gret != GPG_ERR_NO_ERROR) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR,
+ "%s:%s: gret[%u] %s\n",
+ __location__, __func__,
+ gret, gpgme_strerror(gret));
+ gpgme_data_release(crypt_data);
+ return ldb_module_operr(io->ac->module);
+ }
+
+ crypt_mem = gpgme_data_release_and_get_mem(crypt_data, &crypt_length);
+ crypt_data = NULL;
+ if (crypt_mem == NULL) {
+ return ldb_module_oom(io->ac->module);
+ }
+
+ pgb->gpg_blob = data_blob_talloc(io->ac,
+ (const uint8_t *)crypt_mem,
+ crypt_length);
+ gpgme_free(crypt_mem);
+ crypt_mem = NULL;
+ crypt_length = 0;
+ if (pgb->gpg_blob.data == NULL) {
+ return ldb_module_oom(io->ac->module);
+ }
+
+ return LDB_SUCCESS;
+#else /* ENABLE_GPGME */
+ ldb_debug_set(ldb, LDB_DEBUG_FATAL,
+ "You configured 'password hash gpg key ids', "
+ "but GPGME support is missing. (%s:%d)",
+ __FILE__, __LINE__);
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+#endif /* else ENABLE_GPGME */
+}
+
+#define NUM_PACKAGES 6
static int setup_supplemental_field(struct setup_password_fields_io *io)
{
struct ldb_context *ldb;
struct supplementalCredentialsBlob scb;
struct supplementalCredentialsBlob *old_scb = NULL;
- /* Packages + (Kerberos-Newer-Keys, Kerberos, WDigest and CLEARTEXT) */
+ /*
+ * Packages +
+ * ( Kerberos-Newer-Keys, Kerberos,
+ * WDigest, CLEARTEXT, userPassword, SambaGPG)
+ */
uint32_t num_names = 0;
- const char *names[1+4];
+ const char *names[1+NUM_PACKAGES];
uint32_t num_packages = 0;
- struct supplementalCredentialsPackage packages[1+4];
- /* Packages */
- struct supplementalCredentialsPackage *pp = NULL;
- struct package_PackagesBlob pb;
- DATA_BLOB pb_blob;
- char *pb_hexstr;
- /* Primary:Kerberos-Newer-Keys */
- const char **nkn = NULL;
- struct supplementalCredentialsPackage *pkn = NULL;
- struct package_PrimaryKerberosBlob pknb;
- DATA_BLOB pknb_blob;
- char *pknb_hexstr;
- /* Primary:Kerberos */
- const char **nk = NULL;
- struct supplementalCredentialsPackage *pk = NULL;
- struct package_PrimaryKerberosBlob pkb;
- DATA_BLOB pkb_blob;
- char *pkb_hexstr;
- /* Primary:WDigest */
- const char **nd = NULL;
- struct supplementalCredentialsPackage *pd = NULL;
- struct package_PrimaryWDigestBlob pdb;
- DATA_BLOB pdb_blob;
- char *pdb_hexstr;
- /* Primary:CLEARTEXT */
- const char **nc = NULL;
- struct supplementalCredentialsPackage *pc = NULL;
- struct package_PrimaryCLEARTEXTBlob pcb;
- DATA_BLOB pcb_blob;
- char *pcb_hexstr;
+ struct supplementalCredentialsPackage packages[1+NUM_PACKAGES];
+ struct supplementalCredentialsPackage *pp = packages;
int ret;
enum ndr_err_code ndr_err;
- uint8_t zero16[16];
bool do_newer_keys = false;
bool do_cleartext = false;
+ bool do_samba_gpg = false;
- ZERO_STRUCT(zero16);
ZERO_STRUCT(names);
+ ZERO_STRUCT(packages);
ldb = ldb_module_get_ctx(io->ac->module);
if (!io->n.cleartext_utf8) {
- /*
+ /*
* when we don't have a cleartext password
* we can't setup a supplementalCredential value
*/
}
}
/* Per MS-SAMR 3.1.1.8.11.6 we create AES keys if our domain functionality level is 2008 or higher */
- do_newer_keys = (dsdb_functional_level(ldb) >= DS_DOMAIN_FUNCTION_2008);
- if (io->ac->status->domain_data.store_cleartext &&
- (io->u.userAccountControl & UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED)) {
- do_cleartext = true;
- }
+
/*
* The ordering is this
* Primary:Kerberos
* Primary:WDigest
* Primary:CLEARTEXT (optional)
+ * Primary:userPassword
+ * Primary:SambaGPG (optional)
*
* And the 'Packages' package is insert before the last
* other package.
+ *
+ * Note: it's important that Primary:SambaGPG is added as
+ * the last element. This is the indication that it matches
+ * the current password. When a password change happens on
+ * a Windows DC, it will keep the old Primary:SambaGPG value,
+ * but as the first element.
*/
+ do_newer_keys = (dsdb_functional_level(ldb) >= DS_DOMAIN_FUNCTION_2008);
if (do_newer_keys) {
- /* Primary:Kerberos-Newer-Keys */
- nkn = &names[num_names++];
- pkn = &packages[num_packages++];
- }
+ struct package_PrimaryKerberosBlob pknb;
+ DATA_BLOB pknb_blob;
+ char *pknb_hexstr;
+ /*
+ * setup 'Primary:Kerberos-Newer-Keys' element
+ */
+ names[num_names++] = "Kerberos-Newer-Keys";
- /* Primary:Kerberos */
- nk = &names[num_names++];
- pk = &packages[num_packages++];
+ ret = setup_primary_kerberos_newer(io, old_scb, &pknb);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
- if (!do_cleartext) {
- /* Packages */
- pp = &packages[num_packages++];
+ ndr_err = ndr_push_struct_blob(
+ &pknb_blob, io->ac,
+ &pknb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(
+ ldb,
+ "setup_supplemental_field: "
+ "failed to push "
+ "package_PrimaryKerberosNeverBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pknb_hexstr = data_blob_hex_string_upper(io->ac, &pknb_blob);
+ if (!pknb_hexstr) {
+ return ldb_oom(ldb);
+ }
+ pp->name = "Primary:Kerberos-Newer-Keys";
+ pp->reserved = 1;
+ pp->data = pknb_hexstr;
+ pp++;
+ num_packages++;
}
- /* Primary:WDigest */
- nd = &names[num_names++];
- pd = &packages[num_packages++];
+ {
+ /*
+ * setup 'Primary:Kerberos' element
+ */
+ /* Primary:Kerberos */
+ struct package_PrimaryKerberosBlob pkb;
+ DATA_BLOB pkb_blob;
+ char *pkb_hexstr;
+
+ names[num_names++] = "Kerberos";
- if (do_cleartext) {
- /* Packages */
- pp = &packages[num_packages++];
+ ret = setup_primary_kerberos(io, old_scb, &pkb);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
- /* Primary:CLEARTEXT */
- nc = &names[num_names++];
- pc = &packages[num_packages++];
+ ndr_err = ndr_push_struct_blob(
+ &pkb_blob, io->ac,
+ &pkb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(
+ ldb,
+ "setup_supplemental_field: "
+ "failed to push package_PrimaryKerberosBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pkb_hexstr = data_blob_hex_string_upper(io->ac, &pkb_blob);
+ if (!pkb_hexstr) {
+ return ldb_oom(ldb);
+ }
+ pp->name = "Primary:Kerberos";
+ pp->reserved = 1;
+ pp->data = pkb_hexstr;
+ pp++;
+ num_packages++;
}
- if (pkn) {
+ {
/*
- * setup 'Primary:Kerberos-Newer-Keys' element
+ * setup 'Primary:WDigest' element
*/
- *nkn = "Kerberos-Newer-Keys";
+ struct package_PrimaryWDigestBlob pdb;
+ DATA_BLOB pdb_blob;
+ char *pdb_hexstr;
- ret = setup_primary_kerberos_newer(io, old_scb, &pknb);
+ names[num_names++] = "WDigest";
+
+ ret = setup_primary_wdigest(io, old_scb, &pdb);
if (ret != LDB_SUCCESS) {
return ret;
}
- ndr_err = ndr_push_struct_blob(&pknb_blob, io->ac,
- &pknb,
- (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosBlob);
+ ndr_err = ndr_push_struct_blob(
+ &pdb_blob, io->ac,
+ &pdb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimaryWDigestBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
- ldb_asprintf_errstring(ldb,
- "setup_supplemental_field: "
- "failed to push package_PrimaryKerberosNeverBlob: %s",
- nt_errstr(status));
+ ldb_asprintf_errstring(
+ ldb,
+ "setup_supplemental_field: "
+ "failed to push package_PrimaryWDigestBlob: %s",
+ nt_errstr(status));
return LDB_ERR_OPERATIONS_ERROR;
}
- pknb_hexstr = data_blob_hex_string_upper(io->ac, &pknb_blob);
- if (!pknb_hexstr) {
+ pdb_hexstr = data_blob_hex_string_upper(io->ac, &pdb_blob);
+ if (!pdb_hexstr) {
return ldb_oom(ldb);
}
- pkn->name = "Primary:Kerberos-Newer-Keys";
- pkn->reserved = 1;
- pkn->data = pknb_hexstr;
+ pp->name = "Primary:WDigest";
+ pp->reserved = 1;
+ pp->data = pdb_hexstr;
+ pp++;
+ num_packages++;
}
/*
- * setup 'Primary:Kerberos' element
+ * setup 'Primary:CLEARTEXT' element
*/
- *nk = "Kerberos";
-
- ret = setup_primary_kerberos(io, old_scb, &pkb);
- if (ret != LDB_SUCCESS) {
- return ret;
+ if (io->ac->status->domain_data.store_cleartext &&
+ (io->u.userAccountControl & UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED)) {
+ do_cleartext = true;
}
+ if (do_cleartext) {
+ struct package_PrimaryCLEARTEXTBlob pcb;
+ DATA_BLOB pcb_blob;
+ char *pcb_hexstr;
- ndr_err = ndr_push_struct_blob(&pkb_blob, io->ac,
- &pkb,
- (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosBlob);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
- ldb_asprintf_errstring(ldb,
- "setup_supplemental_field: "
- "failed to push package_PrimaryKerberosBlob: %s",
- nt_errstr(status));
- return LDB_ERR_OPERATIONS_ERROR;
- }
- pkb_hexstr = data_blob_hex_string_upper(io->ac, &pkb_blob);
- if (!pkb_hexstr) {
- return ldb_oom(ldb);
- }
- pk->name = "Primary:Kerberos";
- pk->reserved = 1;
- pk->data = pkb_hexstr;
+ names[num_names++] = "CLEARTEXT";
- /*
- * setup 'Primary:WDigest' element
- */
- *nd = "WDigest";
+ pcb.cleartext = *io->n.cleartext_utf16;
- ret = setup_primary_wdigest(io, old_scb, &pdb);
- if (ret != LDB_SUCCESS) {
- return ret;
+ ndr_err = ndr_push_struct_blob(
+ &pcb_blob, io->ac,
+ &pcb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimaryCLEARTEXTBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(
+ ldb,
+ "setup_supplemental_field: "
+ "failed to push package_PrimaryCLEARTEXTBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pcb_hexstr = data_blob_hex_string_upper(io->ac, &pcb_blob);
+ if (!pcb_hexstr) {
+ return ldb_oom(ldb);
+ }
+ pp->name = "Primary:CLEARTEXT";
+ pp->reserved = 1;
+ pp->data = pcb_hexstr;
+ pp++;
+ num_packages++;
}
- ndr_err = ndr_push_struct_blob(&pdb_blob, io->ac,
- &pdb,
- (ndr_push_flags_fn_t)ndr_push_package_PrimaryWDigestBlob);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
- ldb_asprintf_errstring(ldb,
- "setup_supplemental_field: "
- "failed to push package_PrimaryWDigestBlob: %s",
- nt_errstr(status));
- return LDB_ERR_OPERATIONS_ERROR;
- }
- pdb_hexstr = data_blob_hex_string_upper(io->ac, &pdb_blob);
- if (!pdb_hexstr) {
- return ldb_oom(ldb);
+ if (io->ac->userPassword_schemes) {
+ /*
+ * setup 'Primary:userPassword' element
+ */
+ struct package_PrimaryUserPasswordBlob
+ p_userPassword_b;
+ DATA_BLOB p_userPassword_b_blob;
+ char *p_userPassword_b_hexstr;
+
+ names[num_names++] = "userPassword";
+
+ ret = setup_primary_userPassword(io,
+ old_scb,
+ &p_userPassword_b);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ndr_err = ndr_push_struct_blob(
+ &p_userPassword_b_blob,
+ io->ac,
+ &p_userPassword_b,
+ (ndr_push_flags_fn_t)
+ ndr_push_package_PrimaryUserPasswordBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(
+ ldb,
+ "setup_supplemental_field: failed to push "
+ "package_PrimaryUserPasswordBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ p_userPassword_b_hexstr
+ = data_blob_hex_string_upper(
+ io->ac,
+ &p_userPassword_b_blob);
+ if (!p_userPassword_b_hexstr) {
+ return ldb_oom(ldb);
+ }
+ pp->name = "Primary:userPassword";
+ pp->reserved = 1;
+ pp->data = p_userPassword_b_hexstr;
+ pp++;
+ num_packages++;
}
- pd->name = "Primary:WDigest";
- pd->reserved = 1;
- pd->data = pdb_hexstr;
/*
- * setup 'Primary:CLEARTEXT' element
+ * setup 'Primary:SambaGPG' element
*/
- if (pc) {
- *nc = "CLEARTEXT";
+ if (io->ac->gpg_key_ids != NULL) {
+ do_samba_gpg = true;
+ }
+ if (do_samba_gpg) {
+ struct package_PrimarySambaGPGBlob pgb;
+ DATA_BLOB pgb_blob;
+ char *pgb_hexstr;
- pcb.cleartext = *io->n.cleartext_utf16;
+ names[num_names++] = "SambaGPG";
+
+ ret = setup_primary_samba_gpg(io, &pgb);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
- ndr_err = ndr_push_struct_blob(&pcb_blob, io->ac,
- &pcb,
- (ndr_push_flags_fn_t)ndr_push_package_PrimaryCLEARTEXTBlob);
+ ndr_err = ndr_push_struct_blob(&pgb_blob, io->ac, &pgb,
+ (ndr_push_flags_fn_t)ndr_push_package_PrimarySambaGPGBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
ldb_asprintf_errstring(ldb,
- "setup_supplemental_field: "
- "failed to push package_PrimaryCLEARTEXTBlob: %s",
- nt_errstr(status));
+ "setup_supplemental_field: failed to "
+ "push package_PrimarySambaGPGBlob: %s",
+ nt_errstr(status));
return LDB_ERR_OPERATIONS_ERROR;
}
- pcb_hexstr = data_blob_hex_string_upper(io->ac, &pcb_blob);
- if (!pcb_hexstr) {
+ pgb_hexstr = data_blob_hex_string_upper(io->ac, &pgb_blob);
+ if (!pgb_hexstr) {
return ldb_oom(ldb);
}
- pc->name = "Primary:CLEARTEXT";
- pc->reserved = 1;
- pc->data = pcb_hexstr;
+ pp->name = "Primary:SambaGPG";
+ pp->reserved = 1;
+ pp->data = pgb_hexstr;
+ pp++;
+ num_packages++;
}
/*
* setup 'Packages' element
*/
- pb.names = names;
- ndr_err = ndr_push_struct_blob(&pb_blob, io->ac,
- &pb,
- (ndr_push_flags_fn_t)ndr_push_package_PackagesBlob);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
- ldb_asprintf_errstring(ldb,
- "setup_supplemental_field: "
- "failed to push package_PackagesBlob: %s",
- nt_errstr(status));
- return LDB_ERR_OPERATIONS_ERROR;
- }
- pb_hexstr = data_blob_hex_string_upper(io->ac, &pb_blob);
- if (!pb_hexstr) {
- return ldb_oom(ldb);
+ {
+ struct package_PackagesBlob pb;
+ DATA_BLOB pb_blob;
+ char *pb_hexstr;
+
+ pb.names = names;
+ ndr_err = ndr_push_struct_blob(
+ &pb_blob, io->ac,
+ &pb,
+ (ndr_push_flags_fn_t)ndr_push_package_PackagesBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(
+ ldb,
+ "setup_supplemental_field: "
+ "failed to push package_PackagesBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ pb_hexstr = data_blob_hex_string_upper(io->ac, &pb_blob);
+ if (!pb_hexstr) {
+ return ldb_oom(ldb);
+ }
+ pp->name = "Packages";
+ pp->reserved = 2;
+ pp->data = pb_hexstr;
+ num_packages++;
+ /*
+ * We don't increment pp so it's pointing to the last package
+ */
}
- pp->name = "Packages";
- pp->reserved = 2;
- pp->data = pb_hexstr;
/*
* setup 'supplementalCredentials' value
*/
- ZERO_STRUCT(scb);
- scb.sub.num_packages = num_packages;
- scb.sub.packages = packages;
-
- ndr_err = ndr_push_struct_blob(&io->g.supplemental, io->ac,
- &scb,
- (ndr_push_flags_fn_t)ndr_push_supplementalCredentialsBlob);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
- ldb_asprintf_errstring(ldb,
- "setup_supplemental_field: "
- "failed to push supplementalCredentialsBlob: %s",
- nt_errstr(status));
- return LDB_ERR_OPERATIONS_ERROR;
+ {
+ /*
+ * The 'Packages' element needs to be the second last element
+ * in supplementalCredentials
+ */
+ struct supplementalCredentialsPackage temp;
+ struct supplementalCredentialsPackage *prev;
+
+ prev = pp-1;
+ temp = *prev;
+ *prev = *pp;
+ *pp = temp;
+
+ ZERO_STRUCT(scb);
+ scb.sub.signature = SUPPLEMENTAL_CREDENTIALS_SIGNATURE;
+ scb.sub.num_packages = num_packages;
+ scb.sub.packages = packages;
+
+ ndr_err = ndr_push_struct_blob(
+ &io->g.supplemental, io->ac,
+ &scb,
+ (ndr_push_flags_fn_t)ndr_push_supplementalCredentialsBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(
+ ldb,
+ "setup_supplemental_field: "
+ "failed to push supplementalCredentialsBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
}
return LDB_SUCCESS;
static int setup_last_set_field(struct setup_password_fields_io *io)
{
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
const struct ldb_message *msg = NULL;
struct timeval tv = { .tv_sec = 0 };
+ const struct ldb_val *old_val = NULL;
+ const struct ldb_val *new_val = NULL;
+ int ret;
switch (io->ac->req->operation) {
case LDB_ADD:
}
if (io->ac->pwd_last_set_bypass) {
- struct ldb_message_element *el;
+ struct ldb_message_element *el1 = NULL;
+ struct ldb_message_element *el2 = NULL;
if (msg == NULL) {
return LDB_ERR_CONSTRAINT_VIOLATION;
}
- el = ldb_msg_find_element(msg, "pwdLastSet");
- if (el == NULL) {
+ el1 = dsdb_get_single_valued_attr(msg, "pwdLastSet",
+ io->ac->req->operation);
+ if (el1 == NULL) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ el2 = ldb_msg_find_element(msg, "pwdLastSet");
+ if (el2 == NULL) {
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ if (el1 != el2) {
return LDB_ERR_CONSTRAINT_VIOLATION;
}
return LDB_SUCCESS;
}
- /* set it as now */
- GetTimeOfDay(&tv);
- io->g.last_set = timeval_to_nttime(&tv);
+ ret = msg_find_old_and_new_pwd_val(msg, "pwdLastSet",
+ io->ac->req->operation,
+ &new_val, &old_val);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ if (old_val != NULL && new_val == NULL) {
+ ldb_set_errstring(ldb,
+ "'pwdLastSet' deletion is not allowed!");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ io->g.last_set = UINT64_MAX;
+ if (new_val != NULL) {
+ struct ldb_message *tmp_msg = NULL;
+
+ tmp_msg = ldb_msg_new(io->ac);
+ if (tmp_msg == NULL) {
+ return ldb_module_oom(io->ac->module);
+ }
+
+ if (old_val != NULL) {
+ NTTIME old_last_set = 0;
+
+ ret = ldb_msg_add_value(tmp_msg, "oldval",
+ old_val, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ old_last_set = samdb_result_nttime(tmp_msg,
+ "oldval",
+ 1);
+ if (io->u.pwdLastSet != old_last_set) {
+ return dsdb_module_werror(io->ac->module,
+ LDB_ERR_NO_SUCH_ATTRIBUTE,
+ WERR_DS_CANT_REM_MISSING_ATT_VAL,
+ "setup_last_set_field: old pwdLastSet "
+ "value not found!");
+ }
+ }
+
+ ret = ldb_msg_add_value(tmp_msg, "newval",
+ new_val, NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ io->g.last_set = samdb_result_nttime(tmp_msg,
+ "newval",
+ 1);
+ } else if (ldb_msg_find_element(msg, "pwdLastSet")) {
+ ldb_set_errstring(ldb,
+ "'pwdLastSet' deletion is not allowed!");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ } else if (io->ac->smartcard_reset) {
+ /*
+ * adding UF_SMARTCARD_REQUIRED doesn't update
+ * pwdLastSet implicitly.
+ */
+ io->ac->update_lastset = false;
+ }
+
+ /* only 0 or -1 (0xFFFFFFFFFFFFFFFF) are allowed */
+ switch (io->g.last_set) {
+ case 0:
+ if (!io->ac->pwd_last_set_default) {
+ break;
+ }
+ if (!io->ac->update_password) {
+ break;
+ }
+ FALL_THROUGH;
+ case UINT64_MAX:
+ if (!io->ac->update_password &&
+ io->u.pwdLastSet != 0 &&
+ io->u.pwdLastSet != UINT64_MAX)
+ {
+ /*
+ * Just setting pwdLastSet to -1, while not changing
+ * any password field has no effect if pwdLastSet
+ * is already non-zero.
+ */
+ io->ac->update_lastset = false;
+ break;
+ }
+ /* -1 means set it as now */
+ GetTimeOfDay(&tv);
+ io->g.last_set = timeval_to_nttime(&tv);
+ break;
+ default:
+ return dsdb_module_werror(io->ac->module,
+ LDB_ERR_OTHER,
+ WERR_INVALID_PARAMETER,
+ "setup_last_set_field: "
+ "pwdLastSet must be 0 or -1 only!");
+ }
+
+ if (io->ac->req->operation == LDB_ADD) {
+ /*
+ * We always need to store the value on add
+ * operations.
+ */
+ return LDB_SUCCESS;
+ }
+
+ if (io->g.last_set == io->u.pwdLastSet) {
+ /*
+ * Just setting pwdLastSet to 0, is no-op if it's already 0.
+ */
+ io->ac->update_lastset = false;
+ }
return LDB_SUCCESS;
}
struct loadparm_context);
int ret;
+ ret = setup_last_set_field(io);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ if (!io->ac->update_password) {
+ return LDB_SUCCESS;
+ }
+
/* transform the old password (for password changes) */
ret = setup_given_passwords(io, &io->og);
if (ret != LDB_SUCCESS) {
return ret;
}
- ret = setup_last_set_field(io);
- if (ret != LDB_SUCCESS) {
- return ret;
+ return LDB_SUCCESS;
+}
+
+static int setup_smartcard_reset(struct setup_password_fields_io *io)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
+ struct loadparm_context *lp_ctx = talloc_get_type(
+ ldb_get_opaque(ldb, "loadparm"), struct loadparm_context);
+ struct supplementalCredentialsBlob scb = { .__ndr_size = 0 };
+ enum ndr_err_code ndr_err;
+
+ if (!io->ac->smartcard_reset) {
+ return LDB_SUCCESS;
+ }
+
+ io->g.nt_hash = talloc(io->ac, struct samr_Password);
+ if (io->g.nt_hash == NULL) {
+ return ldb_module_oom(io->ac->module);
+ }
+ generate_secret_buffer(io->g.nt_hash->hash,
+ sizeof(io->g.nt_hash->hash));
+ io->g.nt_history_len = 0;
+
+ if (lpcfg_lanman_auth(lp_ctx)) {
+ io->g.lm_hash = talloc(io->ac, struct samr_Password);
+ if (io->g.lm_hash == NULL) {
+ return ldb_module_oom(io->ac->module);
+ }
+ generate_secret_buffer(io->g.lm_hash->hash,
+ sizeof(io->g.lm_hash->hash));
+ } else {
+ io->g.lm_hash = NULL;
+ }
+ io->g.lm_history_len = 0;
+
+ /*
+ * We take the "old" value and store it
+ * with num_packages = 0.
+ *
+ * On "add" we have scb.sub.signature == 0, which
+ * results in:
+ *
+ * [0000] 00 00 00 00 00 00 00 00 00 00 00 00 00
+ *
+ * On modify it's likely to be scb.sub.signature ==
+ * SUPPLEMENTAL_CREDENTIALS_SIGNATURE (0x0050), which results in
+ * something like:
+ *
+ * [0000] 00 00 00 00 62 00 00 00 00 00 00 00 20 00 20 00
+ * [0010] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0020] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0030] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0040] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0050] 20 00 20 00 20 00 20 00 20 00 20 00 20 00 20 00
+ * [0060] 20 00 20 00 20 00 20 00 20 00 20 00 50 00 00
+ *
+ * See https://bugzilla.samba.org/show_bug.cgi?id=11441
+ * and ndr_{push,pull}_supplementalCredentialsSubBlob().
+ */
+ scb = io->o.scb;
+ scb.sub.num_packages = 0;
+
+ /*
+ * setup 'supplementalCredentials' value without packages
+ */
+ ndr_err = ndr_push_struct_blob(&io->g.supplemental, io->ac,
+ &scb,
+ (ndr_push_flags_fn_t)ndr_push_supplementalCredentialsBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
+ ldb_asprintf_errstring(ldb,
+ "setup_smartcard_reset: "
+ "failed to push supplementalCredentialsBlob: %s",
+ nt_errstr(status));
+ return LDB_ERR_OPERATIONS_ERROR;
}
+ io->ac->update_password = true;
return LDB_SUCCESS;
}
-static int make_error_and_update_badPwdCount(struct setup_password_fields_io *io)
+static int make_error_and_update_badPwdCount(struct setup_password_fields_io *io, WERROR *werror)
{
struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
struct ldb_message *mod_msg = NULL;
+ struct ldb_message *pso_msg = NULL;
NTSTATUS status;
int ret;
+ /* PSO search result is optional (NULL if no PSO applies) */
+ if (io->ac->pso_res != NULL) {
+ pso_msg = io->ac->pso_res->message;
+ }
+
status = dsdb_update_bad_pwd_count(io->ac, ldb,
io->ac->search_res->message,
io->ac->dom_res->message,
+ pso_msg,
&mod_msg);
if (!NT_STATUS_IS_OK(status)) {
goto done;
done:
ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ *werror = WERR_INVALID_PASSWORD;
ldb_asprintf_errstring(ldb,
"%08X: %s - check_password_restrictions: "
"The old password specified doesn't match!",
- W_ERROR_V(WERR_INVALID_PASSWORD),
+ W_ERROR_V(*werror),
ldb_strerror(ret));
return ret;
}
-static int check_password_restrictions(struct setup_password_fields_io *io)
+static int check_password_restrictions(struct setup_password_fields_io *io, WERROR *werror)
{
- struct ldb_context *ldb;
+ struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
int ret;
+ struct loadparm_context *lp_ctx =
+ lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
+ struct loadparm_context);
- ldb = ldb_module_get_ctx(io->ac->module);
+ *werror = WERR_INVALID_PARAMETER;
+
+ if (!io->ac->update_password) {
+ return LDB_SUCCESS;
+ }
/* First check the old password is correct, for password changes */
if (!io->ac->pwd_reset) {
has no problems at all */
if (io->og.nt_hash) {
if (!io->o.nt_hash || memcmp(io->og.nt_hash->hash, io->o.nt_hash->hash, 16) != 0) {
- return make_error_and_update_badPwdCount(io);
+ return make_error_and_update_badPwdCount(io, werror);
}
nt_hash_checked = true;
if (io->og.lm_hash) {
if ((!io->o.lm_hash && !nt_hash_checked)
|| (io->o.lm_hash && memcmp(io->og.lm_hash->hash, io->o.lm_hash->hash, 16) != 0)) {
- return make_error_and_update_badPwdCount(io);
+ return make_error_and_update_badPwdCount(io, werror);
}
}
}
!io->ac->pwd_reset)
{
ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ *werror = WERR_PASSWORD_RESTRICTION;
ldb_asprintf_errstring(ldb,
"%08X: %s - check_password_restrictions: "
"password is too young to change!",
- W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ W_ERROR_V(*werror),
ldb_strerror(ret));
return ret;
}
*/
if (io->n.cleartext_utf8 != NULL) {
enum samr_ValidationStatus vstat;
- vstat = samdb_check_password(io->n.cleartext_utf8,
+ vstat = samdb_check_password(io->ac, lp_ctx,
+ io->n.cleartext_utf8,
io->ac->status->domain_data.pwdProperties,
io->ac->status->domain_data.minPwdLength);
switch (vstat) {
case SAMR_VALIDATION_STATUS_PWD_TOO_SHORT:
ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ *werror = WERR_PASSWORD_RESTRICTION;
ldb_asprintf_errstring(ldb,
"%08X: %s - check_password_restrictions: "
"the password is too short. It should be equal or longer than %u characters!",
- W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ W_ERROR_V(*werror),
ldb_strerror(ret),
io->ac->status->domain_data.minPwdLength);
io->ac->status->reject_reason = SAM_PWD_CHANGE_PASSWORD_TOO_SHORT;
case SAMR_VALIDATION_STATUS_NOT_COMPLEX_ENOUGH:
ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ *werror = WERR_PASSWORD_RESTRICTION;
ldb_asprintf_errstring(ldb,
"%08X: %s - check_password_restrictions: "
"the password does not meet the complexity criteria!",
- W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ W_ERROR_V(*werror),
ldb_strerror(ret));
io->ac->status->reject_reason = SAM_PWD_CHANGE_NOT_COMPLEX;
return ret;
default:
ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ *werror = WERR_PASSWORD_RESTRICTION;
ldb_asprintf_errstring(ldb,
"%08X: %s - check_password_restrictions: "
- "the password doesn't fit by a certain reason!",
- W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ "the password doesn't fit due to a miscellaneous restriction!",
+ W_ERROR_V(*werror),
ldb_strerror(ret));
return ret;
}
}
if (io->ac->pwd_reset) {
+ *werror = WERR_OK;
return LDB_SUCCESS;
}
ret = memcmp(io->n.nt_hash, io->o.nt_history[i].hash, 16);
if (ret == 0) {
ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ *werror = WERR_PASSWORD_RESTRICTION;
ldb_asprintf_errstring(ldb,
"%08X: %s - check_password_restrictions: "
"the password was already used (in history)!",
- W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ W_ERROR_V(*werror),
ldb_strerror(ret));
io->ac->status->reject_reason = SAM_PWD_CHANGE_PWD_IN_HISTORY;
return ret;
ret = memcmp(io->n.lm_hash, io->o.lm_history[i].hash, 16);
if (ret == 0) {
ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ *werror = WERR_PASSWORD_RESTRICTION;
ldb_asprintf_errstring(ldb,
"%08X: %s - check_password_restrictions: "
"the password was already used (in history)!",
- W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ W_ERROR_V(*werror),
ldb_strerror(ret));
io->ac->status->reject_reason = SAM_PWD_CHANGE_PWD_IN_HISTORY;
return ret;
/* are all password changes disallowed? */
if (io->ac->status->domain_data.pwdProperties & DOMAIN_REFUSE_PASSWORD_CHANGE) {
ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ *werror = WERR_PASSWORD_RESTRICTION;
ldb_asprintf_errstring(ldb,
"%08X: %s - check_password_restrictions: "
"password changes disabled!",
- W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ W_ERROR_V(*werror),
ldb_strerror(ret));
return ret;
}
/* can this user change the password? */
if (io->u.userAccountControl & UF_PASSWD_CANT_CHANGE) {
ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ *werror = WERR_PASSWORD_RESTRICTION;
ldb_asprintf_errstring(ldb,
"%08X: %s - check_password_restrictions: "
"password can't be changed on this account!",
- W_ERROR_V(WERR_PASSWORD_RESTRICTION),
+ W_ERROR_V(*werror),
ldb_strerror(ret));
return ret;
}
return LDB_SUCCESS;
}
+static int check_password_restrictions_and_log(struct setup_password_fields_io *io)
+{
+ WERROR werror;
+ int ret = check_password_restrictions(io, &werror);
+ struct ph_context *ac = io->ac;
+ /*
+ * Password resets are not authentication events, and if the
+ * upper layer checked the password and supplied the hash
+ * values as proof, then this is also not an authentication
+ * even at this layer (already logged). This is to log LDAP
+ * password changes.
+ */
+
+ /* Do not record a failure in the auth log below in the success case */
+ if (ret == LDB_SUCCESS) {
+ werror = WERR_OK;
+ }
+
+ if (ac->pwd_reset == false && ac->change == NULL) {
+ struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
+ struct imessaging_context *msg_ctx;
+ struct loadparm_context *lp_ctx
+ = talloc_get_type_abort(ldb_get_opaque(ldb, "loadparm"),
+ struct loadparm_context);
+ NTSTATUS status = werror_to_ntstatus(werror);
+ const char *domain_name = lpcfg_sam_name(lp_ctx);
+ void *opaque_remote_address = NULL;
+ /*
+ * Forcing this via the NTLM auth structure is not ideal, but
+ * it is the most practical option right now, and ensures the
+ * logs are consistent, even if some elements are always NULL.
+ */
+ struct auth_usersupplied_info ui = {
+ .mapped_state = true,
+ .was_mapped = true,
+ .client = {
+ .account_name = io->u.sAMAccountName,
+ .domain_name = domain_name,
+ },
+ .mapped = {
+ .account_name = io->u.sAMAccountName,
+ .domain_name = domain_name,
+ },
+ .service_description = "LDAP Password Change",
+ .auth_description = "LDAP Modify",
+ .password_type = "plaintext"
+ };
+
+ opaque_remote_address = ldb_get_opaque(ldb,
+ "remoteAddress");
+ if (opaque_remote_address == NULL) {
+ ldb_asprintf_errstring(ldb,
+ "Failed to obtain remote address for "
+ "the LDAP client while changing the "
+ "password");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ui.remote_host = talloc_get_type(opaque_remote_address,
+ struct tsocket_address);
+
+ msg_ctx = imessaging_client_init(ac, lp_ctx,
+ ldb_get_event_context(ldb));
+ if (!msg_ctx) {
+ ldb_asprintf_errstring(ldb,
+ "Failed to generate client messaging context in %s",
+ lpcfg_imessaging_path(ac, lp_ctx));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ log_authentication_event(msg_ctx,
+ lp_ctx,
+ NULL,
+ &ui,
+ status,
+ domain_name,
+ io->u.sAMAccountName,
+ NULL,
+ io->u.account_sid);
+
+ }
+ return ret;
+}
+
static int update_final_msg(struct setup_password_fields_io *io)
{
struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
int ret;
int el_flags = 0;
+ bool update_password = io->ac->update_password;
+ bool update_scb = io->ac->update_password;
+
+ /*
+ * If we add a user without initial password,
+ * we need to add replication meta data for
+ * following attributes:
+ * - unicodePwd
+ * - dBCSPwd
+ * - ntPwdHistory
+ * - lmPwdHistory
+ *
+ * If we add a user with initial password or a
+ * password is changed of an existing user,
+ * we need to replace the following attributes
+ * with a forced meta data update, e.g. also
+ * when updating an empty attribute with an empty value:
+ * - unicodePwd
+ * - dBCSPwd
+ * - ntPwdHistory
+ * - lmPwdHistory
+ * - supplementalCredentials
+ */
- if (io->ac->req->operation == LDB_MODIFY) {
+ switch (io->ac->req->operation) {
+ case LDB_ADD:
+ update_password = true;
+ el_flags |= DSDB_FLAG_INTERNAL_FORCE_META_DATA;
+ break;
+ case LDB_MODIFY:
el_flags |= LDB_FLAG_MOD_REPLACE;
+ el_flags |= DSDB_FLAG_INTERNAL_FORCE_META_DATA;
+ break;
+ default:
+ return ldb_module_operr(io->ac->module);
}
- /* make sure we replace all the old attributes */
- if (io->ac->update_password && el_flags != 0) {
+ if (update_password) {
ret = ldb_msg_add_empty(io->ac->update_msg,
"unicodePwd",
el_flags, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
+ }
+ if (update_scb) {
ret = ldb_msg_add_empty(io->ac->update_msg,
"supplementalCredentials",
el_flags, NULL);
return ret;
}
}
- if (io->ac->update_lastset && el_flags != 0) {
+ if (io->ac->update_lastset) {
ret = ldb_msg_add_empty(io->ac->update_msg,
"pwdLastSet",
el_flags, NULL);
return ret;
}
}
- ret = samdb_msg_add_uint64(ldb, io->ac,
- io->ac->update_msg,
- "pwdLastSet",
- io->g.last_set);
- if (ret != LDB_SUCCESS) {
- return ret;
+ if (io->ac->update_lastset) {
+ ret = samdb_msg_add_uint64(ldb, io->ac,
+ io->ac->update_msg,
+ "pwdLastSet",
+ io->g.last_set);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
}
return LDB_SUCCESS;
ldb_get_opaque(ldb, "loadparm"), struct loadparm_context);
int ret;
const struct ldb_message *info_msg = NULL;
+ struct dom_sid *account_sid = NULL;
+ int rodc_krbtgt = 0;
ZERO_STRUCTP(io);
info_msg = client_msg;
}
- if (smb_krb5_init_context(ac,
+ ret = smb_krb5_init_context(ac,
(struct loadparm_context *)ldb_get_opaque(ldb, "loadparm"),
- &io->smb_krb5_context) != 0) {
- return ldb_operr(ldb);
+ &io->smb_krb5_context);
+
+ if (ret != 0) {
+ /*
+ * In the special case of mit krb5.conf vs heimdal, the includedir
+ * statement causes ret == 22 (KRB5_CONFIG_BADFORMAT) to be returned.
+ * We look for this case so that we can give a more instructional
+ * message to the administrator.
+ */
+ if (ret == KRB5_CONFIG_BADFORMAT || ret == EINVAL) {
+ ldb_asprintf_errstring(ldb, "Failed to setup krb5_context: %s - "
+ "This could be due to an invalid krb5 configuration. "
+ "Please check your system's krb5 configuration is correct.",
+ error_message(ret));
+ } else {
+ ldb_asprintf_errstring(ldb, "Failed to setup krb5_context: %s",
+ error_message(ret));
+ }
+ return LDB_ERR_OPERATIONS_ERROR;
}
io->ac = ac;
/*
* We only take pwdLastSet from the existing object
* otherwise we leave it as 0.
+ *
+ * If no attribute is available, e.g. on deleted objects
+ * we remember that as UINT64_MAX.
*/
- io->u.pwdLastSet = samdb_result_nttime(info_msg, "pwdLastSet", 0);
+ io->u.pwdLastSet = samdb_result_nttime(info_msg, "pwdLastSet",
+ UINT64_MAX);
}
io->u.sAMAccountName = ldb_msg_find_attr_as_string(info_msg,
"sAMAccountName", NULL);
io->u.user_principal_name = ldb_msg_find_attr_as_string(info_msg,
"userPrincipalName", NULL);
- io->u.is_computer = ldb_msg_check_string_attribute(info_msg, "objectClass", "computer");
+
+ /* Ensure it has an objectSID too */
+ io->u.account_sid = samdb_result_dom_sid(ac, info_msg, "objectSid");
+ if (io->u.account_sid != NULL) {
+ NTSTATUS status;
+ uint32_t rid = 0;
+
+ status = dom_sid_split_rid(account_sid, io->u.account_sid, NULL, &rid);
+ if (NT_STATUS_IS_OK(status)) {
+ if (rid == DOMAIN_RID_KRBTGT) {
+ io->u.is_krbtgt = true;
+ }
+ }
+ }
+
+ rodc_krbtgt = ldb_msg_find_attr_as_int(info_msg,
+ "msDS-SecondaryKrbTgtNumber", 0);
+ if (rodc_krbtgt != 0) {
+ io->u.is_krbtgt = true;
+ }
if (io->u.sAMAccountName == NULL) {
ldb_asprintf_errstring(ldb,
/* Only non-trust accounts have restrictions (possibly this test is the
* wrong way around, but we like to be restrictive if possible */
- io->u.restrictions = !(io->u.userAccountControl
- & (UF_INTERDOMAIN_TRUST_ACCOUNT | UF_WORKSTATION_TRUST_ACCOUNT
- | UF_SERVER_TRUST_ACCOUNT));
+ io->u.restrictions = !(io->u.userAccountControl & UF_TRUST_ACCOUNT_MASK);
+
+ if (io->u.is_krbtgt) {
+ io->u.restrictions = 0;
+ io->ac->status->domain_data.pwdHistoryLength =
+ MAX(io->ac->status->domain_data.pwdHistoryLength, 3);
+ }
if (ac->userPassword) {
ret = msg_find_old_and_new_pwd_val(client_msg, "userPassword",
/* refuse the change if someone tries to set/change the password by
* the lanman hash alone and we've deactivated that mechanism. This
* would end in an account without any password! */
- if ((!io->n.cleartext_utf8) && (!io->n.cleartext_utf16)
+ if (io->ac->update_password
+ && (!io->n.cleartext_utf8) && (!io->n.cleartext_utf16)
&& (!io->n.nt_hash) && (!io->n.lm_hash)) {
ldb_asprintf_errstring(ldb,
"setup_io: "
/* On "add" we have only "password reset" */
ac->pwd_reset = true;
} else if (ac->req->operation == LDB_MODIFY) {
- if (io->og.cleartext_utf8 || io->og.cleartext_utf16
+ struct ldb_control *pav_ctrl = NULL;
+ struct dsdb_control_password_acl_validation *pav = NULL;
+
+ pav_ctrl = ldb_request_get_control(ac->req,
+ DSDB_CONTROL_PASSWORD_ACL_VALIDATION_OID);
+ if (pav_ctrl != NULL) {
+ pav = talloc_get_type_abort(pav_ctrl->data,
+ struct dsdb_control_password_acl_validation);
+ }
+
+ if (pav == NULL && ac->update_password) {
+ bool ok;
+
+ /*
+ * If the DSDB_CONTROL_PASSWORD_ACL_VALIDATION_OID
+ * control is missing, we require system access!
+ */
+ ok = dsdb_module_am_system(ac->module);
+ if (!ok) {
+ return ldb_module_operr(ac->module);
+ }
+ }
+
+ if (pav != NULL) {
+ /*
+ * We assume what the acl module has validated.
+ */
+ ac->pwd_reset = pav->pwd_reset;
+ } else if (io->og.cleartext_utf8 || io->og.cleartext_utf16
|| io->og.nt_hash || io->og.lm_hash) {
/* If we have an old password specified then for sure it
* is a user "password change" */
return ldb_operr(ldb);
}
+ if (io->u.is_krbtgt) {
+ size_t min = 196;
+ size_t max = 255;
+ size_t diff = max - min;
+ size_t len = max;
+ struct ldb_val *krbtgt_utf16 = NULL;
+
+ if (!ac->pwd_reset) {
+ return dsdb_module_werror(ac->module,
+ LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS,
+ WERR_DS_ATT_ALREADY_EXISTS,
+ "Password change on krbtgt not permitted!");
+ }
+
+ if (io->n.cleartext_utf16 == NULL) {
+ return dsdb_module_werror(ac->module,
+ LDB_ERR_UNWILLING_TO_PERFORM,
+ WERR_DS_INVALID_ATTRIBUTE_SYNTAX,
+ "Password reset on krbtgt requires UTF16!");
+ }
+
+ /*
+ * Instead of taking the callers value,
+ * we just generate a new random value here.
+ *
+ * Include null termination in the array.
+ */
+ if (diff > 0) {
+ size_t tmp;
+
+ generate_random_buffer((uint8_t *)&tmp, sizeof(tmp));
+
+ tmp %= diff;
+
+ len = min + tmp;
+ }
+
+ krbtgt_utf16 = talloc_zero(io->ac, struct ldb_val);
+ if (krbtgt_utf16 == NULL) {
+ return ldb_oom(ldb);
+ }
+
+ *krbtgt_utf16 = data_blob_talloc_zero(krbtgt_utf16,
+ (len+1)*2);
+ if (krbtgt_utf16->data == NULL) {
+ return ldb_oom(ldb);
+ }
+ krbtgt_utf16->length = len * 2;
+ generate_secret_buffer(krbtgt_utf16->data,
+ krbtgt_utf16->length);
+ io->n.cleartext_utf16 = krbtgt_utf16;
+ }
+
if (existing_msg != NULL) {
NTSTATUS status;
{
struct ldb_context *ldb;
struct ph_context *ac;
+ struct loadparm_context *lp_ctx = NULL;
ldb = ldb_module_get_ctx(module);
ac->update_password = update_password;
ac->update_lastset = true;
+ lp_ctx = talloc_get_type_abort(ldb_get_opaque(ldb, "loadparm"),
+ struct loadparm_context);
+ ac->gpg_key_ids = lpcfg_password_hash_gpg_key_ids(lp_ctx);
+ ac->userPassword_schemes
+ = lpcfg_password_hash_userpassword_schemes(lp_ctx);
return ac;
}
/* Mark the "bypass pwdLastSet" control as uncritical (done) */
ctrl->critical = false;
}
+
+ ac->pwd_last_set_default = false;
+ ctrl = ldb_request_get_control(ac->req,
+ DSDB_CONTROL_PASSWORD_DEFAULT_LAST_SET_OID);
+ if (ctrl != NULL) {
+ ac->pwd_last_set_default = true;
+
+ /* Mark the "bypass pwdLastSet" control as uncritical (done) */
+ ctrl->critical = false;
+ }
+
+ ac->smartcard_reset = false;
+ ctrl = ldb_request_get_control(ac->req,
+ DSDB_CONTROL_PASSWORD_USER_ACCOUNT_CONTROL_OID);
+ if (ctrl != NULL) {
+ struct dsdb_control_password_user_account_control *uac = NULL;
+ uint32_t added_flags = 0;
+
+ uac = talloc_get_type_abort(ctrl->data,
+ struct dsdb_control_password_user_account_control);
+
+ added_flags = uac->new_flags & ~uac->old_flags;
+
+ if (added_flags & UF_SMARTCARD_REQUIRED) {
+ ac->smartcard_reset = true;
+ }
+
+ /* Mark the "smartcard required" control as uncritical (done) */
+ ctrl->critical = false;
+ }
}
static int ph_op_callback(struct ldb_request *req, struct ldb_reply *ares)
static int ph_mod_search_callback(struct ldb_request *req, struct ldb_reply *ares);
static int password_hash_mod_do_mod(struct ph_context *ac);
+/*
+ * LDB callback handler for searching for a user's PSO. Once we have all the
+ * Password Settings that apply to the user, we can continue with the modify
+ * operation
+ */
+static int get_pso_data_callback(struct ldb_request *req,
+ struct ldb_reply *ares)
+{
+ struct ldb_context *ldb = NULL;
+ struct ph_context *ac = NULL;
+ bool domain_complexity = true;
+ bool pso_complexity = true;
+ struct dsdb_user_pwd_settings *settings = NULL;
+ int ret = LDB_SUCCESS;
+
+ ac = talloc_get_type(req->context, struct ph_context);
+ ldb = ldb_module_get_ctx(ac->module);
+
+ if (!ares) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
+ }
+
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
+
+ /* check status was initialized by the domain query */
+ if (ac->status == NULL) {
+ talloc_free(ares);
+ ldb_set_errstring(ldb, "Uninitialized status");
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+
+ /*
+ * use the PSO's values instead of the domain defaults (the PSO
+ * attributes should always exist, but use the domain default
+ * values as a fallback).
+ */
+ settings = &ac->status->domain_data;
+ settings->store_cleartext =
+ ldb_msg_find_attr_as_bool(ares->message,
+ "msDS-PasswordReversibleEncryptionEnabled",
+ settings->store_cleartext);
+
+ settings->pwdHistoryLength =
+ ldb_msg_find_attr_as_uint(ares->message,
+ "msDS-PasswordHistoryLength",
+ settings->pwdHistoryLength);
+ settings->maxPwdAge =
+ ldb_msg_find_attr_as_int64(ares->message,
+ "msDS-MaximumPasswordAge",
+ settings->maxPwdAge);
+ settings->minPwdAge =
+ ldb_msg_find_attr_as_int64(ares->message,
+ "msDS-MinimumPasswordAge",
+ settings->minPwdAge);
+ settings->minPwdLength =
+ ldb_msg_find_attr_as_uint(ares->message,
+ "msDS-MinimumPasswordLength",
+ settings->minPwdLength);
+ domain_complexity =
+ (settings->pwdProperties & DOMAIN_PASSWORD_COMPLEX);
+ pso_complexity =
+ ldb_msg_find_attr_as_bool(ares->message,
+ "msDS-PasswordComplexityEnabled",
+ domain_complexity);
+
+ /* set or clear the complexity bit if required */
+ if (pso_complexity && !domain_complexity) {
+ settings->pwdProperties |= DOMAIN_PASSWORD_COMPLEX;
+ } else if (domain_complexity && !pso_complexity) {
+ settings->pwdProperties &= ~DOMAIN_PASSWORD_COMPLEX;
+ }
+
+ if (ac->pso_res != NULL) {
+ DBG_ERR("Too many PSO results for %s",
+ ldb_dn_get_linearized(ac->search_res->message->dn));
+ talloc_free(ac->pso_res);
+ }
+
+ /* store the PSO result (we may need its lockout settings) */
+ ac->pso_res = talloc_steal(ac, ares);
+ ret = LDB_SUCCESS;
+ break;
+
+ case LDB_REPLY_REFERRAL:
+ /* ignore */
+ talloc_free(ares);
+ ret = LDB_SUCCESS;
+ break;
+
+ case LDB_REPLY_DONE:
+ talloc_free(ares);
+
+ /*
+ * perform the next step of the modify operation (this code
+ * shouldn't get called in the 'user add' case)
+ */
+ if (ac->req->operation == LDB_MODIFY) {
+ ret = password_hash_mod_do_mod(ac);
+ } else {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ }
+ break;
+ }
+
+done:
+ if (ret != LDB_SUCCESS) {
+ struct ldb_reply *new_ares;
+
+ new_ares = talloc_zero(ac->req, struct ldb_reply);
+ if (new_ares == NULL) {
+ ldb_oom(ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+
+ new_ares->error = ret;
+ if ((ret != LDB_ERR_OPERATIONS_ERROR) && (ac->change_status)) {
+ /* On success and trivial errors a status control is being
+ * added (used for example by the "samdb_set_password" call) */
+ ldb_reply_add_control(new_ares,
+ DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID,
+ false,
+ ac->status);
+ }
+
+ return ldb_module_done(ac->req, new_ares->controls,
+ new_ares->response, new_ares->error);
+ }
+
+ return LDB_SUCCESS;
+}
+
+/*
+ * Builds and returns a search request to lookup up the PSO that applies to
+ * the user in question. Returns NULL if no PSO applies, or could not be found
+ */
+static struct ldb_request * build_pso_data_request(struct ph_context *ac)
+{
+ /* attrs[] is returned from this function in
+ pso_req->op.search.attrs, so it must be static, as
+ otherwise the compiler can put it on the stack */
+ static const char * const attrs[] = { "msDS-PasswordComplexityEnabled",
+ "msDS-PasswordReversibleEncryptionEnabled",
+ "msDS-PasswordHistoryLength",
+ "msDS-MaximumPasswordAge",
+ "msDS-MinimumPasswordAge",
+ "msDS-MinimumPasswordLength",
+ "msDS-LockoutThreshold",
+ "msDS-LockoutObservationWindow",
+ NULL };
+ struct ldb_context *ldb = NULL;
+ struct ldb_request *pso_req = NULL;
+ struct ldb_dn *pso_dn = NULL;
+ TALLOC_CTX *mem_ctx = ac;
+ int ret;
+
+ ldb = ldb_module_get_ctx(ac->module);
+
+ /* if a PSO applies to the user, we need to lookup the PSO as well */
+ pso_dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx, ac->search_res->message,
+ "msDS-ResultantPSO");
+ if (pso_dn == NULL) {
+ return NULL;
+ }
+
+ ret = ldb_build_search_req(&pso_req, ldb, mem_ctx, pso_dn,
+ LDB_SCOPE_BASE, NULL, attrs, NULL,
+ ac, get_pso_data_callback,
+ ac->dom_req);
+
+ /* log errors, but continue with the default domain settings */
+ if (ret != LDB_SUCCESS) {
+ DBG_ERR("Error %d constructing PSO query for user %s", ret,
+ ldb_dn_get_linearized(ac->search_res->message->dn));
+ }
+ LDB_REQ_SET_LOCATION(pso_req);
+ return pso_req;
+}
+
+
static int get_domain_data_callback(struct ldb_request *req,
struct ldb_reply *ares)
{
struct ldb_context *ldb;
struct ph_context *ac;
struct loadparm_context *lp_ctx;
+ struct ldb_request *pso_req = NULL;
int ret = LDB_SUCCESS;
ac = talloc_get_type(req->context, struct ph_context);
break;
case LDB_MODIFY:
- ret = password_hash_mod_do_mod(ac);
+
+ /*
+ * The user may have an optional PSO applied. If so,
+ * query the PSO to get the Fine-Grained Password Policy
+ * for the user, before we perform the modify
+ */
+ pso_req = build_pso_data_request(ac);
+ if (pso_req != NULL) {
+ ret = ldb_next_request(ac->module, pso_req);
+ } else {
+
+ /* no PSO, so we can perform the modify now */
+ ret = password_hash_mod_do_mod(ac);
+ }
break;
default:
const struct ldb_message *msg = NULL;
struct ph_context *ac = NULL;
const char *passwordAttrs[] = {
- "userPassword",
- "clearTextPassword",
- "unicodePwd",
- "dBCSPwd",
+ DSDB_PASSWORD_ATTRIBUTES,
NULL
};
const char **a = NULL;
unsigned int attr_cnt = 0;
struct ldb_control *bypass = NULL;
+ struct ldb_control *uac_ctrl = NULL;
bool userPassword = dsdb_user_password_support(module, req, req);
bool update_password = false;
+ bool processing_needed = false;
*_ac = NULL;
if (attr_cnt > 0) {
update_password = true;
+ processing_needed = true;
+ }
+
+ if (ldb_msg_find_element(msg, "pwdLastSet")) {
+ processing_needed = true;
+ }
+
+ uac_ctrl = ldb_request_get_control(req,
+ DSDB_CONTROL_PASSWORD_USER_ACCOUNT_CONTROL_OID);
+ if (uac_ctrl != NULL) {
+ struct dsdb_control_password_user_account_control *uac = NULL;
+ uint32_t added_flags = 0;
+
+ uac = talloc_get_type_abort(uac_ctrl->data,
+ struct dsdb_control_password_user_account_control);
+
+ added_flags = uac->new_flags & ~uac->old_flags;
+
+ if (added_flags & UF_SMARTCARD_REQUIRED) {
+ processing_needed = true;
+ }
}
- if (!update_password) {
+ if (!processing_needed) {
return ldb_next_request(module, req);
}
return ret;
}
- ret = check_password_restrictions(&io);
+ ret = check_password_restrictions_and_log(&io);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = setup_smartcard_reset(&io);
if (ret != LDB_SUCCESS) {
return ret;
}
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct ph_context *ac = NULL;
- const char *passwordAttrs[] = { "userPassword", "clearTextPassword",
- "unicodePwd", "dBCSPwd", NULL }, **l;
+ const char *passwordAttrs[] = {DSDB_PASSWORD_ATTRIBUTES, NULL}, **l;
unsigned int del_attr_cnt, add_attr_cnt, rep_attr_cnt;
struct ldb_message_element *passwordAttr;
struct ldb_message *msg;
struct ldb_request *down_req;
+ struct ldb_control *restore = NULL;
int ret;
unsigned int i = 0;
}
while ((passwordAttr = ldb_msg_find_element(msg, *l)) != NULL) {
- if (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_DELETE) {
+ unsigned int mtype = LDB_FLAG_MOD_TYPE(passwordAttr->flags);
+ unsigned int nvalues = passwordAttr->num_values;
+
+ if (mtype == LDB_FLAG_MOD_DELETE) {
++del_attr_cnt;
}
- if (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_ADD) {
+ if (mtype == LDB_FLAG_MOD_ADD) {
++add_attr_cnt;
}
- if (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_REPLACE) {
+ if (mtype == LDB_FLAG_MOD_REPLACE) {
++rep_attr_cnt;
}
- if ((passwordAttr->num_values != 1) &&
- (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_ADD)) {
+ if ((nvalues != 1) && (mtype == LDB_FLAG_MOD_ADD)) {
talloc_free(ac);
ldb_asprintf_errstring(ldb,
"'%s' attribute must have exactly one value on add operations!",
*l);
return LDB_ERR_CONSTRAINT_VIOLATION;
}
- if ((passwordAttr->num_values > 1) &&
- (LDB_FLAG_MOD_TYPE(passwordAttr->flags) == LDB_FLAG_MOD_DELETE)) {
+ if ((nvalues > 1) && (mtype == LDB_FLAG_MOD_DELETE)) {
talloc_free(ac);
ldb_asprintf_errstring(ldb,
"'%s' attribute must have zero or one value(s) on delete operations!",
return LDB_ERR_UNWILLING_TO_PERFORM;
}
+ restore = ldb_request_get_control(req,
+ DSDB_CONTROL_RESTORE_TOMBSTONE_OID);
+ if (restore == NULL) {
+ /*
+ * A tomstone reanimation generates a double update
+ * of pwdLastSet.
+ *
+ * So we only remove it without the
+ * DSDB_CONTROL_RESTORE_TOMBSTONE_OID control.
+ */
+ ldb_msg_remove_attr(msg, "pwdLastSet");
+ }
+
+
/* if there was nothing else to be modified skip to next step */
if (msg->num_elements == 0) {
return password_hash_mod_search_self(ac);
struct ldb_context *ldb;
static const char * const attrs[] = { "objectClass",
"userAccountControl",
+ "msDS-ResultantPSO",
"msDS-User-Account-Control-Computed",
"pwdLastSet",
"sAMAccountName",
"badPasswordTime",
"badPwdCount",
"lockoutTime",
+ "msDS-SecondaryKrbTgtNumber",
NULL };
struct ldb_request *search_req;
int ret;
return ret;
}
- ret = check_password_restrictions(&io);
+ ret = check_password_restrictions_and_log(&io);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = setup_smartcard_reset(&io);
if (ret != LDB_SUCCESS) {
return ret;
}
int ldb_password_hash_module_init(const char *version)
{
+#ifdef ENABLE_GPGME
+ const char *gversion = NULL;
+#endif /* ENABLE_GPGME */
+
LDB_MODULE_CHECK_VERSION(version);
+
+#ifdef ENABLE_GPGME
+ /*
+ * Note: this sets a SIGPIPE handler
+ * if none is active already. See:
+ * https://www.gnupg.org/documentation/manuals/gpgme/Signal-Handling.html#Signal-Handling
+ */
+ gversion = gpgme_check_version(GPGME_VERSION);
+ if (gversion == NULL) {
+ fprintf(stderr, "%s() in %s version[%s]: "
+ "gpgme_check_version(%s) not available, "
+ "gpgme_check_version(NULL) => '%s'\n",
+ __func__, __FILE__, version,
+ GPGME_VERSION, gpgme_check_version(NULL));
+ return LDB_ERR_UNAVAILABLE;
+ }
+#endif /* ENABLE_GPGME */
+
return ldb_register_module(&ldb_password_hash_module_ops);
}
git.samba.org / samba.git / blobdiff