Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
Copyright (C) Simo Sorce 2003-2007
Copyright (C) Jeremy Allison 2006
+ Copyright (C) Michael Adam 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "includes.h"
#include "winbindd.h"
+#include "idmap.h"
+#include "passdb/machine_sid.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_IDMAP
static_decl_idmap;
+static void idmap_init(void)
+{
+ static bool initialized;
+
+ if (initialized) {
+ return;
+ }
+
+ DEBUG(10, ("idmap_init(): calling static_init_idmap\n"));
+
+ static_init_idmap;
+
+ initialized = true;
+}
+
/**
* Pointer to the backend methods. Modules register themselves here via
* smb_register_idmap.
};
static struct idmap_backend *backends = NULL;
-/**
- * Pointer to the alloc backend methods. Modules register themselves here via
- * smb_register_idmap_alloc.
- */
-struct idmap_alloc_backend {
- const char *name;
- struct idmap_alloc_methods *methods;
- struct idmap_alloc_backend *prev, *next;
-};
-static struct idmap_alloc_backend *alloc_backends = NULL;
-
-/**
- * The idmap alloc context that is configured via "idmap alloc
- * backend". Defaults to "idmap backend" in case the module (tdb, ldap) also
- * provides alloc methods.
- */
-struct idmap_alloc_context {
- struct idmap_alloc_methods *methods;
-};
-static struct idmap_alloc_context *idmap_alloc_ctx = NULL;
-
/**
* Default idmap domain configured via "idmap backend".
*/
return NULL;
}
-static struct idmap_alloc_methods *get_alloc_methods(const char *name)
-{
- struct idmap_alloc_backend *b;
-
- for (b = alloc_backends; b; b = b->next) {
- if (strequal(b->name, name)) {
- return b->methods;
- }
- }
-
- return NULL;
-}
-
bool idmap_is_offline(void)
{
return ( lp_winbind_offline_logon() &&
return NT_STATUS_OK;
}
-/**********************************************************************
- Allow a module to register itself as an alloc method.
-**********************************************************************/
-
-NTSTATUS smb_register_idmap_alloc(int version, const char *name,
- struct idmap_alloc_methods *methods)
-{
- struct idmap_alloc_methods *test;
- struct idmap_alloc_backend *entry;
-
- if ((version != SMB_IDMAP_INTERFACE_VERSION)) {
- DEBUG(0, ("Failed to register idmap alloc module.\n"
- "The module was compiled against "
- "SMB_IDMAP_INTERFACE_VERSION %d,\n"
- "current SMB_IDMAP_INTERFACE_VERSION is %d.\n"
- "Please recompile against the current version "
- "of samba!\n",
- version, SMB_IDMAP_INTERFACE_VERSION));
- return NT_STATUS_OBJECT_TYPE_MISMATCH;
- }
-
- if (!name || !name[0] || !methods) {
- DEBUG(0,("Called with NULL pointer or empty name!\n"));
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- test = get_alloc_methods(name);
- if (test) {
- DEBUG(0,("idmap_alloc module %s already registered!\n", name));
- return NT_STATUS_OBJECT_NAME_COLLISION;
- }
-
- entry = talloc(NULL, struct idmap_alloc_backend);
- if ( ! entry) {
- DEBUG(0,("Out of memory!\n"));
- return NT_STATUS_NO_MEMORY;
- }
- entry->name = talloc_strdup(entry, name);
- if ( ! entry->name) {
- DEBUG(0,("Out of memory!\n"));
- return NT_STATUS_NO_MEMORY;
- }
- entry->methods = methods;
-
- DLIST_ADD(alloc_backends, entry);
- DEBUG(5, ("Successfully added idmap alloc backend '%s'\n", name));
- return NT_STATUS_OK;
-}
-
-static int close_domain_destructor(struct idmap_domain *dom)
-{
- NTSTATUS ret;
-
- ret = dom->methods->close_fn(dom);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(3, ("Failed to close idmap domain [%s]!\n", dom->name));
- }
-
- return 0;
-}
-
-static bool parse_idmap_module(TALLOC_CTX *mem_ctx, const char *param,
- char **pmodulename, char **pargs)
-{
- char *modulename;
- char *args;
-
- if (strncmp(param, "idmap_", 6) == 0) {
- param += 6;
- DEBUG(1, ("idmap_init: idmap backend uses deprecated "
- "'idmap_' prefix. Please replace 'idmap_%s' by "
- "'%s'\n", param, param));
- }
-
- modulename = talloc_strdup(mem_ctx, param);
- if (modulename == NULL) {
- return false;
- }
-
- args = strchr(modulename, ':');
- if (args == NULL) {
- *pmodulename = modulename;
- *pargs = NULL;
- return true;
- }
-
- *args = '\0';
-
- args = talloc_strdup(mem_ctx, args+1);
- if (args == NULL) {
- TALLOC_FREE(modulename);
- return false;
- }
-
- *pmodulename = modulename;
- *pargs = args;
- return true;
-}
-
/**
* Initialize a domain structure
* @param[in] mem_ctx memory context for the result
* @param[in] domainname which domain is this for
* @param[in] modulename which backend module
- * @param[in] params parameter to pass to the init function
+ * @param[in] check_range whether range checking should be done
* @result The initialized structure
*/
static struct idmap_domain *idmap_init_domain(TALLOC_CTX *mem_ctx,
const char *domainname,
const char *modulename,
- const char *params)
+ bool check_range)
{
struct idmap_domain *result;
NTSTATUS status;
+ char *config_option = NULL;
+ const char *range;
result = talloc_zero(mem_ctx, struct idmap_domain);
if (result == NULL) {
goto fail;
}
+ /*
+ * load ranges and read only information from the config
+ */
+
+ config_option = talloc_asprintf(result, "idmap config %s",
+ result->name);
+ if (config_option == NULL) {
+ DEBUG(0, ("Out of memory!\n"));
+ goto fail;
+ }
+
+ range = lp_parm_const_string(-1, config_option, "range", NULL);
+ if (range == NULL) {
+ DEBUG(1, ("idmap range not specified for domain %s\n",
+ result->name));
+ if (check_range) {
+ goto fail;
+ }
+ } else if (sscanf(range, "%u - %u", &result->low_id,
+ &result->high_id) != 2)
+ {
+ DEBUG(1, ("invalid range '%s' specified for domain "
+ "'%s'\n", range, result->name));
+ if (check_range) {
+ goto fail;
+ }
+ }
+
+ result->read_only = lp_parm_bool(-1, config_option, "read only", false);
+
+ talloc_free(config_option);
+
+ if (result->low_id > result->high_id) {
+ DEBUG(1, ("Error: invalid idmap range detected: %lu - %lu\n",
+ (unsigned long)result->low_id,
+ (unsigned long)result->high_id));
+ if (check_range) {
+ goto fail;
+ }
+ }
+
result->methods = get_methods(modulename);
if (result->methods == NULL) {
DEBUG(3, ("idmap backend %s not found\n", modulename));
goto fail;
}
- status = result->methods->init(result, params);
+ status = result->methods->init(result);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("idmap initialization returned %s\n",
nt_errstr(status)));
goto fail;
}
- talloc_set_destructor(result, close_domain_destructor);
-
- return result;
-
-fail:
- TALLOC_FREE(result);
- return NULL;
-}
-
-/**
- * Initialize the default domain structure
- * @param[in] mem_ctx memory context for the result
- * @result The default domain structure
- *
- * This routine takes the module name from the "idmap backend" parameter,
- * passing a possible parameter like ldap:ldap://ldap-url/ to the module.
- */
-
-static struct idmap_domain *idmap_init_default_domain(TALLOC_CTX *mem_ctx)
-{
- struct idmap_domain *result;
- char *modulename;
- char *params;
-
- DEBUG(10, ("idmap_init_default_domain: calling static_init_idmap\n"));
-
- static_init_idmap;
-
- if (!parse_idmap_module(talloc_tos(), lp_idmap_backend(), &modulename,
- ¶ms)) {
- DEBUG(1, ("parse_idmap_module failed\n"));
- return NULL;
- }
-
- DEBUG(3, ("idmap_init: using '%s' as remote backend\n", modulename));
-
- result = idmap_init_domain(mem_ctx, "*", modulename, params);
- if (result == NULL) {
- goto fail;
- }
-
- TALLOC_FREE(modulename);
- TALLOC_FREE(params);
return result;
fail:
- TALLOC_FREE(modulename);
- TALLOC_FREE(params);
TALLOC_FREE(result);
return NULL;
}
char *config_option;
const char *backend;
+ idmap_init();
+
config_option = talloc_asprintf(talloc_tos(), "idmap config %s",
domname);
if (config_option == NULL) {
goto fail;
}
- result = idmap_init_domain(mem_ctx, domname, backend, NULL);
+ result = idmap_init_domain(mem_ctx, domname, backend, true);
if (result == NULL) {
goto fail;
}
return NULL;
}
+/**
+ * Initialize the default domain structure
+ * @param[in] mem_ctx memory context for the result
+ * @result The default domain structure
+ *
+ * This routine takes the module name from the "idmap backend" parameter,
+ * passing a possible parameter like ldap:ldap://ldap-url/ to the module.
+ */
+
+static struct idmap_domain *idmap_init_default_domain(TALLOC_CTX *mem_ctx)
+{
+ return idmap_init_named_domain(mem_ctx, "*");
+}
+
/**
* Initialize the passdb domain structure
* @param[in] mem_ctx memory context for the result
static struct idmap_domain *idmap_init_passdb_domain(TALLOC_CTX *mem_ctx)
{
+ idmap_init();
+
+ /*
+ * Always init the default domain, we can't go without one
+ */
+ if (default_idmap_domain == NULL) {
+ default_idmap_domain = idmap_init_default_domain(NULL);
+ }
+ if (default_idmap_domain == NULL) {
+ return NULL;
+ }
+
if (passdb_idmap_domain != NULL) {
return passdb_idmap_domain;
}
passdb_idmap_domain = idmap_init_domain(NULL, get_global_sam_name(),
- "passdb", NULL);
+ "passdb", false);
if (passdb_idmap_domain == NULL) {
DEBUG(1, ("Could not init passdb idmap domain\n"));
}
* add_trusted_domain.
*/
-static struct idmap_domain *idmap_find_domain(const char *domname)
+struct idmap_domain *idmap_find_domain(const char *domname)
{
struct idmap_domain *result;
int i;
DEBUG(10, ("idmap_find_domain called for domain '%s'\n",
domname?domname:"NULL"));
+ idmap_init();
+
/*
* Always init the default domain, we can't go without one
*/
/*
* talloc context for all idmap domains
*/
- idmap_domains = TALLOC_ARRAY(NULL, struct idmap_domain *, 1);
+ idmap_domains = talloc_array(NULL, struct idmap_domain *, 1);
}
if (idmap_domains == NULL) {
void idmap_close(void)
{
- if (idmap_alloc_ctx) {
- idmap_alloc_ctx->methods->close_fn();
- idmap_alloc_ctx->methods = NULL;
- }
- alloc_backends = NULL;
TALLOC_FREE(default_idmap_domain);
TALLOC_FREE(passdb_idmap_domain);
TALLOC_FREE(idmap_domains);
num_domains = 0;
}
-/**
- * Initialize the idmap alloc backend
- * @param[out] ctx Where to put the alloc_ctx?
- * @result Did it work fine?
- *
- * This routine first looks at "idmap alloc backend" and if that is not
- * defined, it uses "idmap backend" for the module name.
- */
-static NTSTATUS idmap_alloc_init(struct idmap_alloc_context **ctx)
-{
- const char *backend;
- char *modulename, *params;
- NTSTATUS ret = NT_STATUS_NO_MEMORY;;
-
- if (idmap_alloc_ctx != NULL) {
- *ctx = idmap_alloc_ctx;
- return NT_STATUS_OK;
- }
-
- idmap_alloc_ctx = talloc(NULL, struct idmap_alloc_context);
- if (idmap_alloc_ctx == NULL) {
- DEBUG(0, ("talloc failed\n"));
- goto fail;
- }
-
- backend = lp_idmap_alloc_backend();
- if ((backend == NULL) || (backend[0] == '\0')) {
- backend = lp_idmap_backend();
- }
-
- if (backend == NULL) {
- DEBUG(3, ("no idmap alloc backend defined\n"));
- ret = NT_STATUS_INVALID_PARAMETER;
- goto fail;
- }
+/**************************************************************************
+ idmap allocator interface functions
+**************************************************************************/
- if (!parse_idmap_module(idmap_alloc_ctx, backend, &modulename,
- ¶ms)) {
- DEBUG(1, ("parse_idmap_module %s failed\n", backend));
- goto fail;
- }
+static NTSTATUS idmap_allocate_unixid(struct unixid *id)
+{
+ struct idmap_domain *dom;
+ NTSTATUS ret;
- idmap_alloc_ctx->methods = get_alloc_methods(modulename);
+ dom = idmap_find_domain(NULL);
- if (idmap_alloc_ctx->methods == NULL) {
- ret = smb_probe_module("idmap", modulename);
- if (NT_STATUS_IS_OK(ret)) {
- idmap_alloc_ctx->methods =
- get_alloc_methods(modulename);
- }
+ if (dom == NULL) {
+ return NT_STATUS_UNSUCCESSFUL;
}
- if (idmap_alloc_ctx->methods == NULL) {
- DEBUG(1, ("could not find idmap alloc module %s\n", backend));
- ret = NT_STATUS_INVALID_PARAMETER;
- goto fail;
+ if (dom->methods->allocate_id == NULL) {
+ return NT_STATUS_NOT_IMPLEMENTED;
}
- ret = idmap_alloc_ctx->methods->init(params);
+ ret = dom->methods->allocate_id(dom, id);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(0, ("ERROR: Initialization failed for alloc "
- "backend, deferred!\n"));
- goto fail;
- }
-
- TALLOC_FREE(modulename);
- TALLOC_FREE(params);
-
- *ctx = idmap_alloc_ctx;
- return NT_STATUS_OK;
-
-fail:
- TALLOC_FREE(idmap_alloc_ctx);
return ret;
}
-/**************************************************************************
- idmap allocator interface functions
-**************************************************************************/
NTSTATUS idmap_allocate_uid(struct unixid *id)
{
- struct idmap_alloc_context *ctx;
- NTSTATUS ret;
-
- if (!NT_STATUS_IS_OK(ret = idmap_alloc_init(&ctx))) {
- return ret;
- }
-
id->type = ID_TYPE_UID;
- return ctx->methods->allocate_id(id);
+ return idmap_allocate_unixid(id);
}
NTSTATUS idmap_allocate_gid(struct unixid *id)
{
- struct idmap_alloc_context *ctx;
- NTSTATUS ret;
-
- if (!NT_STATUS_IS_OK(ret = idmap_alloc_init(&ctx))) {
- return ret;
- }
-
- id->type = ID_TYPE_GID;
- return ctx->methods->allocate_id(id);
-}
-
-NTSTATUS idmap_set_uid_hwm(struct unixid *id)
-{
- struct idmap_alloc_context *ctx;
- NTSTATUS ret;
-
- if (!NT_STATUS_IS_OK(ret = idmap_alloc_init(&ctx))) {
- return ret;
- }
-
- id->type = ID_TYPE_UID;
- return ctx->methods->set_id_hwm(id);
-}
-
-NTSTATUS idmap_set_gid_hwm(struct unixid *id)
-{
- struct idmap_alloc_context *ctx;
- NTSTATUS ret;
-
- if (!NT_STATUS_IS_OK(ret = idmap_alloc_init(&ctx))) {
- return ret;
- }
-
id->type = ID_TYPE_GID;
- return ctx->methods->set_id_hwm(id);
-}
-
-NTSTATUS idmap_new_mapping(const struct dom_sid *psid, enum id_type type,
- struct unixid *pxid)
-{
- struct dom_sid sid;
- struct idmap_domain *dom;
- struct id_map map;
- NTSTATUS status;
-
- dom = idmap_find_domain(NULL);
- if (dom == NULL) {
- DEBUG(3, ("no default domain, no place to write\n"));
- return NT_STATUS_ACCESS_DENIED;
- }
- if (dom->methods->set_mapping == NULL) {
- DEBUG(3, ("default domain not writable\n"));
- return NT_STATUS_MEDIA_WRITE_PROTECTED;
- }
-
- sid_copy(&sid, psid);
- map.sid = &sid;
- map.xid.type = type;
-
- switch (type) {
- case ID_TYPE_UID:
- status = idmap_allocate_uid(&map.xid);
- break;
- case ID_TYPE_GID:
- status = idmap_allocate_gid(&map.xid);
- break;
- default:
- status = NT_STATUS_INVALID_PARAMETER;
- break;
- }
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(3, ("Could not allocate id: %s\n", nt_errstr(status)));
- return status;
- }
-
- map.status = ID_MAPPED;
-
- DEBUG(10, ("Setting mapping: %s <-> %s %lu\n",
- sid_string_dbg(map.sid),
- (map.xid.type == ID_TYPE_UID) ? "UID" : "GID",
- (unsigned long)map.xid.id));
-
- status = dom->methods->set_mapping(dom, &map);
-
- if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_COLLISION)) {
- struct id_map *ids[2];
- DEBUG(5, ("Mapping for %s exists - retrying to map sid\n",
- sid_string_dbg(map.sid)));
- ids[0] = ↦
- ids[1] = NULL;
- status = dom->methods->sids_to_unixids(dom, ids);
- }
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(3, ("Could not store the new mapping: %s\n",
- nt_errstr(status)));
- return status;
- }
-
- *pxid = map.xid;
-
- return NT_STATUS_OK;
+ return idmap_allocate_unixid(id);
}
NTSTATUS idmap_backends_unixid_to_sid(const char *domname, struct id_map *id)
dom = idmap_init_passdb_domain(NULL);
if ((dom != NULL)
- && NT_STATUS_IS_OK(dom->methods->unixids_to_sids(dom, maps))) {
+ && NT_STATUS_IS_OK(dom->methods->unixids_to_sids(dom, maps))
+ && id->status == ID_MAPPED) {
return NT_STATUS_OK;
}
struct idmap_domain *dom;
struct id_map *maps[2];
+ DEBUG(10, ("idmap_backends_sid_to_unixid: domain = '%s', sid = [%s]\n",
+ domain?domain:"NULL", sid_string_dbg(id->sid)));
+
maps[0] = id;
maps[1] = NULL;
if (sid_check_is_in_builtin(id->sid)
- || (sid_check_is_in_our_domain(id->sid))) {
+ || (sid_check_is_in_our_domain(id->sid)))
+ {
+ NTSTATUS status;
+
+ DEBUG(10, ("asking passdb...\n"));
dom = idmap_init_passdb_domain(NULL);
if (dom == NULL) {
return NT_STATUS_NONE_MAPPED;
}
- return dom->methods->sids_to_unixids(dom, maps);
- }
+ status = dom->methods->sids_to_unixids(dom, maps);
- dom = idmap_find_domain(domain);
- if (dom == NULL) {
- return NT_STATUS_NONE_MAPPED;
- }
-
- return dom->methods->sids_to_unixids(dom, maps);
-}
+ if (NT_STATUS_IS_OK(status) && id->status == ID_MAPPED) {
+ return status;
+ }
-NTSTATUS idmap_set_mapping(const struct id_map *map)
-{
- struct idmap_domain *dom;
+ DEBUG(10, ("passdb could not map.\n"));
- dom = idmap_find_domain(NULL);
- if (dom == NULL) {
- DEBUG(3, ("no default domain, no place to write\n"));
- return NT_STATUS_ACCESS_DENIED;
- }
- if (dom->methods->set_mapping == NULL) {
- DEBUG(3, ("default domain not writable\n"));
- return NT_STATUS_MEDIA_WRITE_PROTECTED;
+ return NT_STATUS_NONE_MAPPED;
}
- return dom->methods->set_mapping(dom, map);
-}
-
-NTSTATUS idmap_remove_mapping(const struct id_map *map)
-{
- struct idmap_domain *dom;
-
- dom = idmap_find_domain(NULL);
+ dom = idmap_find_domain(domain);
if (dom == NULL) {
- DEBUG(3, ("no default domain, no place to write\n"));
- return NT_STATUS_ACCESS_DENIED;
- }
- if (dom->methods->remove_mapping == NULL) {
- DEBUG(3, ("default domain not writable\n"));
- return NT_STATUS_MEDIA_WRITE_PROTECTED;
+ return NT_STATUS_NONE_MAPPED;
}
- return dom->methods->remove_mapping(dom, map);
+ return dom->methods->sids_to_unixids(dom, maps);
}
git.samba.org / samba.git / blobdiff