--- /dev/null
+/*
+ * idmap_rid: static map between Active Directory/NT RIDs and RFC 2307 accounts
+ * Copyright (C) Guenther Deschner, 2004
+ * Copyright (C) Sumit Bose, 2004
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * TODO:
+ * - use str_list_copy to work on a either space or comma-separated list
+ * - assure somehow that we cannot swap uids/gids (difficult without any
+ * knowledge about the sid-type)
+ * - fix memory allocation
+ * - further cleanup
+ * - add spnego-login
+ */
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_IDMAP
+
+NTSTATUS init_module(void);
+
+struct dom_entry {
+ char *name;
+ char *sid;
+ int min_id;
+ int max_id;
+};
+
+typedef struct trust_dom_array {
+ int number;
+ struct dom_entry *dom;
+} trust_dom_array;
+
+static trust_dom_array trust;
+
+static NTSTATUS rid_idmap_parse(char *init_param,
+ uint32 num_domains,
+ char **domain_names,
+ DOM_SID *domain_sids,
+ uid_t u_low,
+ uid_t u_high)
+{
+ char *p, *e;
+ int i;
+ trust.number = 0;
+ trust.dom = NULL;
+ fstring sid_str;
+ BOOL known_domain = False;
+ p = init_param;
+
+ /* init sizes */
+ trust.dom = (struct dom_entry *) malloc(sizeof(struct dom_entry));
+ if (trust.dom == NULL)
+ return NT_STATUS_NO_MEMORY;
+
+ trust.dom[0].sid = (char *) malloc(strlen(sid_str));
+ if (trust.dom[0].sid == NULL)
+ return NT_STATUS_NO_MEMORY;
+
+ trust.dom[0].name = (char *) malloc(strlen(p));
+ if (trust.dom[0].name == NULL)
+ return NT_STATUS_NO_MEMORY;
+
+ /* falling back to automatic mapping when there were no options given */
+ if (!*init_param) {
+
+ DEBUG(3,("rid_idmap_parse: no domain list given, falling back to automatic mapping for own domain:\n"));
+
+ sid_to_string(sid_str, &domain_sids[num_domains-1]);
+ trust.dom[0].name = domain_names[num_domains-1];
+ trust.dom[0].sid = strdup(sid_str);
+ trust.dom[0].min_id = u_low;
+ trust.dom[0].max_id = u_high;
+ trust.number = 1;
+ DEBUGADD(3,("rid_idmap_parse:\tdomain: [%s], sid: [%s], range=[%d-%d]\n",
+ trust.dom[0].name, trust.dom[0].sid, trust.dom[0].min_id, trust.dom[0].max_id));
+ return NT_STATUS_OK;
+ }
+
+ /* scan through the init_param-list */
+ for(;;) {
+
+ DEBUG(3,("rid_idmap_parse: parsing entry: %d\n", trust.number));
+
+ /* reinit sizes */
+ trust.dom = (struct dom_entry *) realloc(trust.dom,sizeof(struct dom_entry)*(trust.number+1));
+ if ( trust.dom == NULL )
+ return NT_STATUS_NO_MEMORY;
+
+ trust.dom[trust.number].sid = (char *) malloc(strlen(p));
+ trust.dom[trust.number].name = (char *) malloc(strlen(p));
+ if (trust.dom[trust.number].sid == NULL || trust.dom[trust.number].name == NULL)
+ return NT_STATUS_NO_MEMORY;
+
+
+ if ( (e = strchr(p,'=')) == NULL ) {
+ DEBUG(0, ("rid_idmap_parse: no '=' sign found in domain list [%s]\n", init_param));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ *e = '\0';
+
+ /* add the name */
+ i=0;
+ do {
+ if ( *p != ' ' && *p != '\t' ) {
+ trust.dom[trust.number].name[i++] = *p;
+ }
+ p++;
+ } while(*p);
+
+ trust.dom[trust.number].name[i++] = '\0';
+ DEBUGADD(3,("rid_idmap_parse:\tentry %d has name: [%s]\n", trust.number, trust.dom[trust.number].name));
+
+ /* add the domain-sid */
+ for (i=0; i<num_domains; i++) {
+ known_domain = False;
+ if (strequal(domain_names[i],trust.dom[trust.number].name)) {
+ sid_to_string(sid_str, &domain_sids[i]);
+ trust.dom[trust.number].sid = strdup(sid_str);
+ DEBUGADD(3,("rid_idmap_parse:\tentry %d has sid: [%s]\n", trust.number, trust.dom[trust.number].sid));
+ known_domain = True;
+ }
+ }
+
+ if (!known_domain) {
+ DEBUG(0,("rid_idmap_parse: your DC does not know anything about: [%s]\n", trust.dom[trust.number].name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ p = e + 1;
+ if ( (e = strchr(p,'-')) == NULL )
+ return NT_STATUS_INVALID_PARAMETER;
+
+ *e = '\0';
+
+ /* add min_id */
+ trust.dom[trust.number].min_id = atoi(p);
+ DEBUGADD(3,("rid_idmap_parse:\tentry %d has min_id: [%d]\n", trust.number, trust.dom[trust.number].min_id));
+ p = e + 1;
+
+ /* add max_id */
+ trust.dom[trust.number].max_id = atoi(p);
+ DEBUGADD(3,("rid_idmap_parse:\tentry %d has max_id: [%d]\n", trust.number, trust.dom[trust.number].max_id));
+ trust.number++;
+
+ if ( (e = strchr(p,',')) == NULL ) {
+ break;
+ } else {
+ *e = '\0';
+ p = e + 1;
+ }
+
+ }
+ return NT_STATUS_OK;
+
+}
+
+static NTSTATUS rid_idmap_get_domains(uint32 *num_domains, char ***domain_names, DOM_SID **domain_sids)
+{
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ struct cli_state *cli;
+ TALLOC_CTX *mem_ctx;
+ POLICY_HND pol;
+ uint32 des_access = SEC_RIGHTS_MAXIMUM_ALLOWED;
+ uint32 enum_ctx = 0;
+ fstring dc_name;
+ struct in_addr dc_ip;
+
+ char *password = NULL;
+ char *username = NULL;
+ char *domain = NULL;
+ uint32 info_class = 5;
+ char *domain_name = NULL;
+ DOM_SID *domain_sid;
+ fstring sid_str;
+ int i;
+ uint32 trusted_num_domains = 0;
+ char **trusted_domain_names;
+ DOM_SID *trusted_domain_sids;
+
+ /* create mem_ctx */
+ if (!(mem_ctx = talloc_init("rid_idmap_get_trusted_domains"))) {
+ DEBUG(0, ("rid_idmap_get_domains: talloc_init() failed\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!get_dc_name(lp_workgroup(), 0, dc_name, &dc_ip)) {
+ DEBUG(1, ("rid_idmap_get_domains: could not get dc-name\n"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ /* open a connection to the dc */
+ username = secrets_fetch(SECRETS_AUTH_USER, NULL);
+ password = secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
+ domain = secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
+
+ if (username) {
+
+ if (!domain)
+ domain = smb_xstrdup(lp_workgroup());
+
+ if (!password)
+ password = smb_xstrdup("");
+
+ DEBUG(3, ("rid_idmap_get_domains: IPC$ connections done by user %s\\%s\n", domain, username));
+
+ } else {
+
+ DEBUG(3, ("rid_idmap_get_domains: IPC$ connections done anonymously\n"));
+ username = smb_xstrdup("");
+ domain = smb_xstrdup("");
+ password = smb_xstrdup("");
+ }
+
+ DEBUG(10, ("rid_idmap_get_domains: opening connection to [%s]\n", dc_name));
+ status = cli_full_connection(&cli, global_myname(), dc_name,
+ NULL, 0,
+ "IPC$", "IPC",
+ username,
+ lp_workgroup(),
+ password,
+ CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK, True, NULL);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("rid_idmap_get_domains: could not setup connection to dc\n"));
+ return status;
+ }
+
+ /* query the lsa-pipe */
+ if (!cli_nt_session_open (cli, PI_LSARPC)) {
+ DEBUG(1, ("rid_idmap_get_domains: could not setup connection to dc\n"));
+ goto out;
+ }
+
+ /* query policies */
+ status = cli_lsa_open_policy(cli, mem_ctx, False, des_access, &pol);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto out;
+ }
+ status = cli_lsa_query_info_policy(cli, mem_ctx, &pol, info_class, &domain_name, &domain_sid);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("rid_idmap_get_domains: cannot retrieve domain-info\n"));
+ goto out;
+ }
+
+ sid_to_string(sid_str, domain_sid);
+ DEBUG(10,("rid_idmap_get_domains: my domain: [%s], sid: [%s]\n", domain_name, sid_str));
+
+ /* scan trusted domains */
+ DEBUG(10, ("rid_idmap_get_domains: enumerating trusted domains\n"));
+ status = cli_lsa_enum_trust_dom(cli, mem_ctx, &pol, &enum_ctx,
+ &trusted_num_domains,
+ &trusted_domain_names,
+ &trusted_domain_sids);
+
+ if (!NT_STATUS_IS_OK(status) &&
+ !NT_STATUS_EQUAL(status, NT_STATUS_NO_MORE_ENTRIES) &&
+ !NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
+ DEBUG(1, ("rid_idmap_get_domains: could not enumerate trusted domains\n"));
+ goto out;
+ }
+
+ /* show trusted domains */
+ DEBUG(10,("rid_idmap_get_domains: scan for domains gave %d results:\n", trusted_num_domains));
+ for (i=0;i<trusted_num_domains;i++) {
+ sid_to_string(sid_str, &trusted_domain_sids[i]);
+ DEBUGADD(10,("rid_idmap_get_domains:\t#%d\tDOMAIN: [%s], SID: [%s]\n",
+ i, trusted_domain_names[i], sid_str));
+ }
+
+ /* put the results together */
+ *num_domains = trusted_num_domains + 1;
+ *domain_names = (char **) malloc(sizeof(char *) * *num_domains);
+ *domain_sids = (DOM_SID *) malloc(sizeof(DOM_SID) * *num_domains);
+
+ /* first add myself at the end*/
+ (*domain_names)[*num_domains-1] = strdup(domain_name);
+ sid_copy(&(*domain_sids)[*num_domains-1], domain_sid);
+
+ /* add trusted domains */
+ for (i=0;i<trusted_num_domains;i++) {
+ (*domain_names)[i] = strdup(trusted_domain_names[i]);
+ sid_copy(&((*domain_sids)[i]), &(trusted_domain_sids[i]));
+ }
+
+ /* show complete domain list */
+ DEBUG(5,("rid_idmap_get_domains: complete domain-list has %d entries:\n", *num_domains));
+ for (i=0;i<*num_domains;i++) {
+ sid_to_string(sid_str, &((*domain_sids)[i]));
+ DEBUGADD(5,("rid_idmap_get_domains:\t#%d\tdomain: [%s], sid: [%s]\n",
+ i, (*domain_names)[i], sid_str ));
+ }
+
+ status = NT_STATUS_OK;
+
+out:
+ cli_lsa_close(cli, mem_ctx, &pol);
+ cli_nt_session_close(cli);
+ talloc_destroy(mem_ctx);
+ cli_shutdown(cli);
+ return status;
+}
+
+static NTSTATUS rid_idmap_init(char *init_param)
+{
+ int i, j;
+ uid_t u_low, u_high;
+ gid_t g_low, g_high;
+ uint32 num_domains = 0;
+ char **domain_names;
+ DOM_SID *domain_sids;
+ NTSTATUS nt_status;
+
+ /* basic sanity checks */
+ if (!lp_idmap_uid(&u_low, &u_high) || !lp_idmap_gid(&g_low, &g_high)) {
+ DEBUG(0, ("rid_idmap_init: cannot get global idmap-ranges.\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (u_low != g_low || u_high != g_high) {
+ DEBUG(0, ("rid_idmap_init: range defined in \"idmap uid\" must match range of \"idmap gid\".\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* retrieve full domain list */
+ nt_status = rid_idmap_get_domains(&num_domains, &domain_names, &domain_sids);
+ if (!NT_STATUS_IS_OK(nt_status) &&
+ !NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MORE_ENTRIES) &&
+ !NT_STATUS_EQUAL(nt_status, STATUS_MORE_ENTRIES)) {
+ DEBUG(0, ("rid_idmap_init: cannot fetch sids for domain and/or trusted-domains from domain-controller.\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* parse the init string */
+ nt_status = rid_idmap_parse(init_param, num_domains, domain_names, domain_sids, u_low, u_high);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(0, ("rid_idmap_init: cannot parse module-configuration\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* some basic sanity checks */
+ for(i=0;i<trust.number;i++) {
+ DEBUG(10,("rid_idmap_init: sanity checks on mapping of domain: [%s]\n", trust.dom[i].name));
+ if (trust.dom[i].min_id > trust.dom[i].max_id) {
+ DEBUG(0, ("rid_idmap_init: min_id has to be smaller than max_id for %s\n",trust.dom[i].name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ if (trust.dom[i].min_id < u_low || trust.dom[i].max_id > u_high) {
+ DEBUG(0, ("rid_idmap_init: mapping of domain %s (%d-%d) has to fit into global idmap range (%d-%d).\n",
+ trust.dom[i].name, trust.dom[i].min_id, trust.dom[i].max_id, u_low, u_high));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ /* check for overlaps */
+ for(i=0;i<trust.number-1;i++) {
+ for(j=i+1;j<trust.number;j++) {
+ if (trust.dom[i].min_id <= trust.dom[j].max_id && trust.dom[j].min_id <= trust.dom[i].max_id) {
+ DEBUG(0, ("rid_idmap_init: the ranges of %s and %s overlap\n",
+ trust.dom[i+1].name, trust.dom[i].name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+ }
+
+ DEBUG(3, ("rid_idmap_init: using the %d following mappings:\n", trust.number));
+ for(i=0;i<trust.number;i++) {
+ DEBUGADD(3, ("rid_idmap_init:\tdomain: [%s], sid: [%s], min_id: [%d], max_id: [%d]\n",
+ trust.dom[i].name, trust.dom[i].sid, trust.dom[i].min_id, trust.dom[i].max_id));
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS rid_idmap_get_sid_from_id(DOM_SID *sid, unid_t unid, int id_type)
+{
+ fstring sid_string;
+ int i;
+ DOM_SID sidstr;
+
+ if (sid == NULL) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* find range */
+ for(i=0;i<trust.number;i++) {
+ if (trust.dom[i].min_id <= unid.uid && trust.dom[i].max_id >= unid.uid )
+ break;
+ }
+
+ if (i == trust.number) {
+ DEBUG(0,("no range found for uid: %d\n",unid.uid));
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+
+ /* use lower-end of idmap-range as offset for users and groups*/
+ (unsigned long)unid.uid -= trust.dom[i].min_id;
+
+ string_to_sid(&sidstr,trust.dom[i].sid);
+ sid_copy(sid, &sidstr);
+ if (!sid_append_rid( sid, (unsigned long)unid.uid )) {
+ DEBUG(0,("rid_idmap_get_sid_from_id: could not append rid to domain sid\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ DEBUG(3, ("rid_idmap_get_sid_from_id: mapped POSIX %s %d to SID [%s]\n",
+ (id_type == ID_GROUPID) ? "GID" : "UID", unid.uid,
+ sid_to_string(sid_string, sid)));
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS rid_idmap_get_id_from_sid(unid_t *unid, int *id_type, const DOM_SID *sid)
+{
+ fstring sid_string;
+ int i;
+ uint32 rid;
+ DOM_SID sidstr;
+
+ if (unid == NULL) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* check if we have a mapping for the sid*/
+ for(i=0;i<trust.number;i++) {
+ string_to_sid(&sidstr,trust.dom[i].sid);
+ if ( sid_compare_domain(sid, &sidstr) == 0 )
+ break;
+ }
+
+ if (i == trust.number) {
+ DEBUG(0,("rid_idmap_get_id_from_sid: we have no mapping for sid: [%s] in domain: [%s]\n",
+ sid_to_string(sid_string, sid), trust.dom[i].name));
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+
+ if (!sid_peek_rid(sid, &rid)) {
+ DEBUG(0,("rid_idmap_get_id_from_sid: could not peek rid\n"));
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+
+ /* use lower-end of idmap-range as offset for users and groups */
+ (unsigned long)unid->uid = rid + trust.dom[i].min_id;
+
+ if (unid->uid > trust.dom[i].max_id) {
+ DEBUG(0,("rid_idmap_get_id_from_sid: rid: %d too high for mapping of domain: %s\n", rid, trust.dom[i].name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ if (unid->uid < trust.dom[i].min_id) {
+ DEBUG(0,("rid_idmap_get_id_from_sid: rid: %d too low for mapping of domain: %s\n", rid, trust.dom[i].name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ DEBUG(3,("rid_idmap_get_id_from_sid: mapped SID [%s] to POSIX %s %d\n",
+ sid_to_string(sid_string, sid),
+ (*id_type == ID_GROUPID) ? "GID" : "UID", unid->uid));
+
+ return NT_STATUS_OK;
+
+}
+
+static NTSTATUS rid_idmap_set_mapping(const DOM_SID *sid, unid_t id, int id_type)
+{
+ return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS rid_idmap_close(void)
+{
+ int i;
+ for(i=0;i<trust.number;i++) {
+ free(trust.dom[i].sid);
+ free(trust.dom[i].name);
+ }
+ free(trust.dom);
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS rid_idmap_allocate_rid(uint32 *rid, int rid_type)
+{
+ return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS rid_idmap_allocate_id(unid_t *id, int id_type)
+{
+ return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static void rid_idmap_status(void)
+{
+ DEBUG(0, ("RID IDMAP Status not available\n"));
+}
+
+static struct idmap_methods rid_methods = {
+ rid_idmap_init,
+ rid_idmap_allocate_rid,
+ rid_idmap_allocate_id,
+ rid_idmap_get_sid_from_id,
+ rid_idmap_get_id_from_sid,
+ rid_idmap_set_mapping,
+ rid_idmap_close,
+ rid_idmap_status
+};
+
+NTSTATUS init_module(void)
+{
+ return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "idmap_rid", &rid_methods);
+}
+
git.samba.org / samba.git / commitdiff