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r25940: Rework the samldb and templates handling.
Templates just don't belong in the sam.ldb, as they don't obey any of the other rules. This moves them to a seperate templates.ldb. In samldb, this patch reworks the duplicate SID and Name detection code, to use ldb_search_exp_fmt() rather than gendb_search. This returns far more useful errors, which we now handle and report better. The call to samdb_search_for_parent_domain() has been moved in samldb, to allow both the account and SID uniqueness checks to be in the same domain. This function also returns better errors. dcesrv_drsuapi.c is updated for the new prototype of samdb_search_for_parent_domain() Andrew Bartlett
This commit is contained in:
Andrew Bartlett
Stefan Metzmacher
parent
e47df4a0fe
commit
f1ab90c88c
@ -190,24 +190,16 @@ static int samldb_allocate_next_rid(struct ldb_module *module, TALLOC_CTX *mem_c
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*/
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static int samldb_get_new_sid(struct ldb_module *module,
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TALLOC_CTX *mem_ctx, struct ldb_dn *obj_dn,
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struct ldb_dn *dom_dn,
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struct dom_sid **sid)
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{
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const char * const attrs[2] = { "objectSid", NULL };
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struct ldb_result *res = NULL;
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struct ldb_dn *dom_dn;
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int ret;
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struct dom_sid *dom_sid;
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/* get the domain component part of the provided dn */
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dom_dn = samdb_search_for_parent_domain(module->ldb, mem_ctx, obj_dn);
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if (dom_dn == NULL) {
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ldb_asprintf_errstring(module->ldb,
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"Invalid dn (%s) not child of a domain object!\n",
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ldb_dn_get_linearized(obj_dn));
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return LDB_ERR_CONSTRAINT_VIOLATION;
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}
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/* find the domain sid */
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ret = ldb_search(module->ldb, dom_dn, LDB_SCOPE_BASE, "objectSid=*", attrs, &res);
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@ -338,13 +330,14 @@ int samldb_notice_sid(struct ldb_module *module,
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}
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static int samldb_handle_sid(struct ldb_module *module,
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TALLOC_CTX *mem_ctx, struct ldb_message *msg2)
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TALLOC_CTX *mem_ctx, struct ldb_message *msg2,
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struct ldb_dn *parent_dn)
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{
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int ret;
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struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, msg2, "objectSid");
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if (sid == NULL) {
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ret = samldb_get_new_sid(module, msg2, msg2->dn, &sid);
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ret = samldb_get_new_sid(module, msg2, msg2->dn, parent_dn, &sid);
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if (ret != 0) {
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return ret;
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}
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@ -361,31 +354,35 @@ static int samldb_handle_sid(struct ldb_module *module,
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return ret;
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}
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static char *samldb_generate_samAccountName(struct ldb_module *module, TALLOC_CTX *mem_ctx)
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static int samldb_generate_samAccountName(struct ldb_module *module, TALLOC_CTX *mem_ctx,
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struct ldb_dn *dom_dn, char **name)
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{
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char *name;
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const char *attrs[] = { NULL };
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struct ldb_message **msgs;
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struct ldb_result *res;
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int ret;
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/* Format: $000000-000000000000 */
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do {
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name = talloc_asprintf(mem_ctx, "$%.6X-%.6X%.6X", (unsigned int)random(), (unsigned int)random(), (unsigned int)random());
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*name = talloc_asprintf(mem_ctx, "$%.6X-%.6X%.6X", (unsigned int)random(), (unsigned int)random(), (unsigned int)random());
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/* TODO: Figure out exactly what this is meant to conflict with */
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ret = gendb_search(module->ldb,
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mem_ctx, NULL, &msgs, attrs,
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"samAccountName=%s",
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ldb_binary_encode_string(mem_ctx, name));
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if (ret == 0) {
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ret = ldb_search_exp_fmt(module->ldb,
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mem_ctx, &res, dom_dn, LDB_SCOPE_SUBTREE, attrs,
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"samAccountName=%s",
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ldb_binary_encode_string(mem_ctx, *name));
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if (ret != LDB_SUCCESS) {
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ldb_asprintf_errstring(module->ldb, "samldb: Failure searching to determine if samAccountName %s is unique: %s",
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*name, ldb_errstring(module->ldb));
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return ret;
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}
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if (res->count == 0) {
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talloc_free(res);
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/* Great. There are no conflicting users/groups/etc */
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return name;
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} else if (ret == -1) {
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/* Bugger, there is a problem, and we don't know what it is until gendb_search improves */
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return NULL;
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return LDB_SUCCESS;
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} else {
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talloc_free(name);
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/* gah, there are conflicting sids, lets move around the loop again... */
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talloc_free(*name);
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/* gah, there is a conflicting name, lets move around the loop again... */
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}
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} while (1);
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}
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@ -394,8 +391,9 @@ static int samldb_fill_group_object(struct ldb_module *module, const struct ldb_
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struct ldb_message **ret_msg)
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{
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int ret;
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const char *name;
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char *name;
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struct ldb_message *msg2;
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struct ldb_dn *dom_dn;
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const char *rdn_name;
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TALLOC_CTX *mem_ctx = talloc_new(msg);
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const char *errstr;
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@ -428,12 +426,19 @@ static int samldb_fill_group_object(struct ldb_module *module, const struct ldb_
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return LDB_ERR_CONSTRAINT_VIOLATION;
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}
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ret = samdb_search_for_parent_domain(module->ldb, mem_ctx, msg2->dn, &dom_dn, &errstr);
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if (ret != LDB_SUCCESS) {
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ldb_asprintf_errstring(module->ldb,
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"samldb_fill_group_object: %s", errstr);
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return ret;
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}
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/* Generate a random name, if no samAccountName was supplied */
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if (ldb_msg_find_element(msg2, "samAccountName") == NULL) {
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name = samldb_generate_samAccountName(module, mem_ctx);
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if (!name) {
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ret = samldb_generate_samAccountName(module, mem_ctx, dom_dn, &name);
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if (ret != LDB_SUCCESS) {
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talloc_free(mem_ctx);
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return LDB_ERR_OPERATIONS_ERROR;
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return ret;
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}
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ret = samdb_find_or_add_attribute(module->ldb, msg2, "sAMAccountName", name);
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if (ret) {
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@ -443,7 +448,7 @@ static int samldb_fill_group_object(struct ldb_module *module, const struct ldb_
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}
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/* Manage SID allocation, conflicts etc */
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ret = samldb_handle_sid(module, mem_ctx, msg2);
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ret = samldb_handle_sid(module, mem_ctx, msg2, dom_dn);
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if (ret == LDB_SUCCESS) {
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talloc_steal(msg, msg2);
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@ -459,6 +464,7 @@ static int samldb_fill_user_or_computer_object(struct ldb_module *module, const
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int ret;
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char *name;
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struct ldb_message *msg2;
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struct ldb_dn *dom_dn;
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const char *rdn_name;
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TALLOC_CTX *mem_ctx = talloc_new(msg);
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const char *errstr;
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@ -514,11 +520,18 @@ static int samldb_fill_user_or_computer_object(struct ldb_module *module, const
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return LDB_ERR_CONSTRAINT_VIOLATION;
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}
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ret = samdb_search_for_parent_domain(module->ldb, mem_ctx, msg2->dn, &dom_dn, &errstr);
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if (ret != LDB_SUCCESS) {
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ldb_asprintf_errstring(module->ldb,
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"samldb_fill_group_object: %s", errstr);
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return ret;
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}
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if (ldb_msg_find_element(msg2, "samAccountName") == NULL) {
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name = samldb_generate_samAccountName(module, mem_ctx);
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if (!name) {
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ret = samldb_generate_samAccountName(module, mem_ctx, dom_dn, &name);
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if (ret != LDB_SUCCESS) {
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talloc_free(mem_ctx);
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return LDB_ERR_OPERATIONS_ERROR;
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return ret;
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}
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ret = samdb_find_or_add_attribute(module->ldb, msg2, "sAMAccountName", name);
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if (ret) {
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@ -532,7 +545,7 @@ static int samldb_fill_user_or_computer_object(struct ldb_module *module, const
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*/
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/* Manage SID allocation, conflicts etc */
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ret = samldb_handle_sid(module, mem_ctx, msg2);
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ret = samldb_handle_sid(module, mem_ctx, msg2, dom_dn);
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/* TODO: objectCategory, userAccountControl, badPwdCount, codePage, countryCode, badPasswordTime, lastLogoff, lastLogon, pwdLastSet, primaryGroupID, accountExpires, logonCount */
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@ -37,6 +37,34 @@
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#include "dsdb/common/flags.h"
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#include "param/param.h"
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char *samdb_relative_path(struct ldb_context *ldb,
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TALLOC_CTX *mem_ctx,
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const char *name)
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{
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const char *base_url =
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(const char *)ldb_get_opaque(ldb, "ldb_url");
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char *path, *p, *full_name;
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if (name == NULL) {
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return NULL;
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}
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if (name[0] == 0 || name[0] == '/' || strstr(name, ":/")) {
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return talloc_strdup(mem_ctx, name);
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}
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path = talloc_strdup(mem_ctx, base_url);
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if (path == NULL) {
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return NULL;
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}
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if ( (p = strrchr(path, '/')) != NULL) {
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p[0] = '\0';
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full_name = talloc_asprintf(mem_ctx, "%s/%s", path, name);
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} else {
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full_name = talloc_asprintf(mem_ctx, "./%s", name);
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}
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talloc_free(path);
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return full_name;
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}
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/*
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connect to the SAM database
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return an opaque context pointer on success, or NULL on failure
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@ -682,21 +710,49 @@ int samdb_copy_template(struct ldb_context *ldb,
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struct ldb_result *res;
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struct ldb_message *t;
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int ret, i, j;
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struct ldb_dn *basedn = ldb_dn_new(ldb, ldb, "cn=Templates");
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struct ldb_context *templates_ldb;
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char *templates_ldb_path;
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struct ldb_dn *basedn;
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templates_ldb = talloc_get_type(ldb_get_opaque(ldb, "templates_ldb"), struct ldb_context);
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if (!templates_ldb) {
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templates_ldb_path = samdb_relative_path(ldb,
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msg,
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"templates.ldb");
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if (!templates_ldb_path) {
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*errstring = talloc_asprintf(msg, "samdb_copy_template: ERROR: Failed to contruct path for template db");
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return LDB_ERR_OPERATIONS_ERROR;
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}
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templates_ldb = ldb_wrap_connect(ldb, global_loadparm,
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templates_ldb_path, NULL,
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NULL, 0, NULL);
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talloc_free(templates_ldb_path);
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if (!templates_ldb) {
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return LDB_ERR_OPERATIONS_ERROR;
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}
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ret = ldb_set_opaque(ldb, "templates_ldb", templates_ldb);
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if (ret != LDB_SUCCESS) {
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return ret;
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}
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}
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*errstring = NULL;
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basedn = ldb_dn_new(templates_ldb, ldb, "cn=Templates");
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if (!ldb_dn_add_child_fmt(basedn, "CN=Template%s", name)) {
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talloc_free(basedn);
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*errstring = talloc_asprintf(msg, "samdb_copy_template: ERROR: Failed to contruct DN for template '%s'",
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name);
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return LDB_ERR_OPERATIONS_ERROR;
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}
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/* pull the template record */
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ret = ldb_search(ldb, basedn, LDB_SCOPE_BASE, "cn=*", NULL, &res);
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ret = ldb_search(templates_ldb, basedn, LDB_SCOPE_BASE, "(dn=*)", NULL, &res);
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talloc_free(basedn);
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if (ret != LDB_SUCCESS) {
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*errstring = talloc_steal(msg, ldb_errstring(ldb));
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*errstring = talloc_steal(msg, ldb_errstring(templates_ldb));
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return ret;
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}
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if (res->count != 1) {
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@ -1439,7 +1495,8 @@ failed:
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/* Find a domain object in the parents of a particular DN. */
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struct ldb_dn *samdb_search_for_parent_domain(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn *dn)
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int samdb_search_for_parent_domain(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
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struct ldb_dn **parent_dn, const char **errstring)
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{
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TALLOC_CTX *local_ctx;
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struct ldb_dn *sdn = dn;
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@ -1448,7 +1505,7 @@ struct ldb_dn *samdb_search_for_parent_domain(struct ldb_context *ldb, TALLOC_CT
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const char *attrs[] = { NULL };
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local_ctx = talloc_new(mem_ctx);
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if (local_ctx == NULL) return NULL;
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if (local_ctx == NULL) return LDB_ERR_OPERATIONS_ERROR;
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while ((sdn = ldb_dn_get_parent(local_ctx, sdn))) {
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ret = ldb_search(ldb, sdn, LDB_SCOPE_BASE,
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@ -1458,18 +1515,28 @@ struct ldb_dn *samdb_search_for_parent_domain(struct ldb_context *ldb, TALLOC_CT
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if (res->count == 1) {
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break;
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}
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} else {
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break;
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}
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}
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if (ret != LDB_SUCCESS || res->count != 1) {
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if (ret != LDB_SUCCESS) {
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*errstring = talloc_asprintf(mem_ctx, "Error searching for parent domain of %s: %s",
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ldb_dn_get_linearized(sdn),
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ldb_errstring(ldb));
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talloc_free(local_ctx);
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return NULL;
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return ret;
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}
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if (res->count != 1) {
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*errstring = talloc_asprintf(mem_ctx, "Invalid dn (%s), not child of a domain object",
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ldb_dn_get_linearized(sdn));
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talloc_free(local_ctx);
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return LDB_ERR_CONSTRAINT_VIOLATION;
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}
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talloc_steal(mem_ctx, sdn);
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*parent_dn = talloc_steal(mem_ctx, res->msgs[0]->dn);
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talloc_free(local_ctx);
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return sdn;
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return ret;
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}
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/*
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@ -570,6 +570,7 @@ static WERROR dcesrv_drsuapi_DsGetDomainControllerInfo_1(struct drsuapi_bind_sta
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ret = ldb_search_exp_fmt(b_state->sam_ctx, mem_ctx, &res_account, ref_dn,
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LDB_SCOPE_BASE, attrs_account_1, "objectClass=computer");
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if (ret == LDB_SUCCESS && res_account->count == 1) {
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const char *errstr;
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ctr1->array[i].dns_name
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= ldb_msg_find_attr_as_string(res_account->msgs[0], "dNSHostName", NULL);
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ctr1->array[i].netbios_name
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@ -578,10 +579,11 @@ static WERROR dcesrv_drsuapi_DsGetDomainControllerInfo_1(struct drsuapi_bind_sta
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= ldb_dn_get_linearized(res_account->msgs[0]->dn);
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/* Determine if this is the PDC */
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domain_dn = samdb_search_for_parent_domain(b_state->sam_ctx,
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mem_ctx, res_account->msgs[0]->dn);
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ret = samdb_search_for_parent_domain(b_state->sam_ctx,
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mem_ctx, res_account->msgs[0]->dn,
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&domain_dn, &errstr);
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if (domain_dn) {
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if (ret == LDB_SUCCESS) {
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ret = ldb_search_exp_fmt(b_state->sam_ctx, mem_ctx, &res_domain, domain_dn,
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LDB_SCOPE_BASE, attrs_none, "fSMORoleOwner=%s",
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ldb_dn_get_linearized(ntds_dn));
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@ -664,6 +666,7 @@ static WERROR dcesrv_drsuapi_DsGetDomainControllerInfo_1(struct drsuapi_bind_sta
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ret = ldb_search_exp_fmt(b_state->sam_ctx, mem_ctx, &res_account, ref_dn,
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LDB_SCOPE_BASE, attrs_account_2, "objectClass=computer");
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if (ret == LDB_SUCCESS && res_account->count == 1) {
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const char *errstr;
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ctr2->array[i].dns_name
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= ldb_msg_find_attr_as_string(res_account->msgs[0], "dNSHostName", NULL);
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ctr2->array[i].netbios_name
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@ -673,10 +676,11 @@ static WERROR dcesrv_drsuapi_DsGetDomainControllerInfo_1(struct drsuapi_bind_sta
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= samdb_result_guid(res_account->msgs[0], "objectGUID");
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/* Determine if this is the PDC */
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domain_dn = samdb_search_for_parent_domain(b_state->sam_ctx,
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mem_ctx, res_account->msgs[0]->dn);
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ret = samdb_search_for_parent_domain(b_state->sam_ctx,
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mem_ctx, res_account->msgs[0]->dn,
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&domain_dn, &errstr);
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if (domain_dn) {
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if (ret == LDB_SUCCESS) {
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ret = ldb_search_exp_fmt(b_state->sam_ctx, mem_ctx, &res_domain, domain_dn,
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LDB_SCOPE_BASE, attrs_none, "fSMORoleOwner=%s",
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ldb_dn_get_linearized(ntds_dn));
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@ -383,6 +383,7 @@ function provision_default_paths(subobj)
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paths.shareconf = lp.get("private dir") + "/" + "share.ldb";
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paths.samdb = lp.get("sam database");
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paths.secrets = lp.get("secrets database");
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paths.templates = lp.get("private dir") + "/" + "templates.ldb";
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paths.keytab = "secrets.keytab";
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paths.dns_keytab = "dns.keytab";
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paths.dns_keytab_abs = lp.get("private dir") + "/" + paths.dns_keytab;
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@ -528,6 +529,9 @@ function provision_become_dc(subobj, message, erase, paths, session_info)
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info.message = message;
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info.session_info = session_info;
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message("Setting up teplates into " + paths.templates + "\n");
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setup_ldb("provision_templates.ldif", info, paths.templates);
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/* Also wipes the database */
|
||||
message("Setting up " + paths.samdb + " partitions\n");
|
||||
setup_ldb("provision_partitions.ldif", info, paths.samdb);
|
||||
@ -548,9 +552,6 @@ function provision_become_dc(subobj, message, erase, paths, session_info)
|
||||
message("Setting up " + paths.samdb + " indexes\n");
|
||||
setup_add_ldif("provision_index.ldif", info, samdb, false);
|
||||
|
||||
message("Setting up " + paths.samdb + " templates\n");
|
||||
setup_add_ldif("provision_templates.ldif", info, samdb, false);
|
||||
|
||||
ok = samdb.transaction_commit();
|
||||
assert(ok);
|
||||
|
||||
@ -623,6 +624,9 @@ function provision(subobj, message, blank, paths, session_info, credentials, lda
|
||||
var reg = reg_open();
|
||||
reg.apply_patchfile(lp.get("setup directory") + "/provision.reg")
|
||||
|
||||
message("Setting up teplates into " + paths.templates + "\n");
|
||||
setup_ldb("provision_templates.ldif", info, paths.templates);
|
||||
|
||||
message("Setting up sam.ldb partitions\n");
|
||||
/* Also wipes the database */
|
||||
setup_ldb("provision_partitions.ldif", info, paths.samdb);
|
||||
@ -707,8 +711,6 @@ function provision(subobj, message, blank, paths, session_info, credentials, lda
|
||||
|
||||
message("Setting up display specifiers\n");
|
||||
setup_add_ldif("display_specifiers.ldif", info, samdb, false);
|
||||
message("Setting up sam.ldb templates\n");
|
||||
setup_add_ldif("provision_templates.ldif", info, samdb, false);
|
||||
|
||||
message("Adding users container (permitted to fail)\n");
|
||||
var add_ok = setup_add_ldif("provision_users_add.ldif", info, samdb, true);
|
||||
|
||||
@ -1,15 +1,21 @@
|
||||
###
|
||||
# Templates to be put in templates.ldb. Not part of main samdb any more.
|
||||
###
|
||||
|
||||
dn: @OPTIONS
|
||||
checkBaseOnSearch: TRUE
|
||||
|
||||
dn: @INDEXLIST
|
||||
@IDXATTR: cn
|
||||
|
||||
dn: @ATTRIBUTES
|
||||
cn: CASE_INSENSITIVE
|
||||
dn: CASE_INSENSITIVE
|
||||
|
||||
dn: CN=Templates
|
||||
objectClass: top
|
||||
objectClass: container
|
||||
description: Container for SAM account templates
|
||||
showInAdvancedViewOnly: TRUE
|
||||
systemFlags: 2348810240
|
||||
isCriticalSystemObject: TRUE
|
||||
|
||||
###
|
||||
# note! the template users must not match normal searches. Be careful
|
||||
# with what classes you put them in
|
||||
###
|
||||
|
||||
dn: CN=TemplateUser,CN=Templates
|
||||
userAccountControl: 514
|
||||
|
||||
Loading…
Reference in New Issue
Block a user