ldap_id.c revision 580374daba2ab2c6075a7d0de9512abff133e2e9
/*
SSSD
LDAP Identity Backend Module
Authors:
Simo Sorce <ssorce@redhat.com>
Copyright (C) 2008 Red Hat
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 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <time.h>
#include <sys/time.h>
#include "util/util.h"
#include "util/strtonum.h"
#include "db/sysdb.h"
#include "providers/ldap/ldap_common.h"
#include "providers/ldap/sdap_async.h"
/* =Users-Related-Functions-(by-name,by-uid)============================== */
struct users_get_state {
struct tevent_context *ev;
struct sdap_id_ctx *ctx;
struct sdap_id_op *op;
struct sysdb_ctx *sysdb;
struct sss_domain_info *domain;
const char *name;
int filter_type;
char *filter;
const char **attrs;
int dp_error;
};
static int users_get_retry(struct tevent_req *req);
static void users_get_connect_done(struct tevent_req *subreq);
static void users_get_done(struct tevent_req *subreq);
struct tevent_req *users_get_send(TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sdap_id_ctx *ctx,
const char *name,
int filter_type,
int attrs_type)
{
struct tevent_req *req;
struct users_get_state *state;
const char *attr_name;
int ret;
req = tevent_req_create(memctx, &state, struct users_get_state);
if (!req) return NULL;
state->ev = ev;
state->ctx = ctx;
state->dp_error = DP_ERR_FATAL;
state->op = sdap_id_op_create(state, state->ctx->conn_cache);
if (!state->op) {
DEBUG(2, ("sdap_id_op_create failed\n"));
ret = ENOMEM;
goto fail;
}
state->sysdb = ctx->be->sysdb;
state->domain = state->ctx->be->domain;
state->name = name;
state->filter_type = filter_type;
switch (filter_type) {
case BE_FILTER_NAME:
attr_name = ctx->opts->user_map[SDAP_AT_USER_NAME].name;
break;
case BE_FILTER_IDNUM:
attr_name = ctx->opts->user_map[SDAP_AT_USER_UID].name;
break;
default:
ret = EINVAL;
goto fail;
}
state->filter = talloc_asprintf(state, "(&(%s=%s)(objectclass=%s))",
attr_name, name,
ctx->opts->user_map[SDAP_OC_USER].name);
if (!state->filter) {
DEBUG(2, ("Failed to build filter\n"));
ret = ENOMEM;
goto fail;
}
/* TODO: handle attrs_type */
ret = build_attrs_from_map(state, ctx->opts->user_map,
SDAP_OPTS_USER, &state->attrs);
if (ret != EOK) goto fail;
ret = users_get_retry(req);
if (ret != EOK) {
goto fail;
}
return req;
fail:
tevent_req_error(req, ret);
tevent_req_post(req, ev);
return req;
}
static int users_get_retry(struct tevent_req *req)
{
struct users_get_state *state = tevent_req_data(req,
struct users_get_state);
struct tevent_req *subreq;
int ret = EOK;
subreq = sdap_id_op_connect_send(state->op, state, &ret);
if (!subreq) {
return ret;
}
tevent_req_set_callback(subreq, users_get_connect_done, req);
return EOK;
}
static void users_get_connect_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct users_get_state *state = tevent_req_data(req,
struct users_get_state);
int dp_error = DP_ERR_FATAL;
int ret;
ret = sdap_id_op_connect_recv(subreq, &dp_error);
talloc_zfree(subreq);
if (ret != EOK) {
state->dp_error = dp_error;
tevent_req_error(req, ret);
return;
}
subreq = sdap_get_users_send(state, state->ev,
state->domain, state->sysdb,
state->ctx->opts,
sdap_id_op_handle(state->op),
state->attrs, state->filter);
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
tevent_req_set_callback(subreq, users_get_done, req);
}
static void users_get_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct users_get_state *state = tevent_req_data(req,
struct users_get_state);
char *endptr;
uid_t uid;
int dp_error = DP_ERR_FATAL;
int ret;
ret = sdap_get_users_recv(subreq, NULL, NULL);
talloc_zfree(subreq);
ret = sdap_id_op_done(state->op, ret, &dp_error);
if (dp_error == DP_ERR_OK && ret != EOK) {
/* retry */
ret = users_get_retry(req);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
return;
}
if (ret && ret != ENOENT) {
state->dp_error = dp_error;
tevent_req_error(req, ret);
return;
}
if (ret == ENOENT) {
if (strchr(state->name, '*')) {
/* it was an enumeration */
tevent_req_error(req, ret);
return;
}
switch (state->filter_type) {
case BE_FILTER_NAME:
ret = sysdb_delete_user(state, state->sysdb,
state->domain, state->name, 0);
if (ret) {
tevent_req_error(req, ret);
return;
}
break;
case BE_FILTER_IDNUM:
uid = (uid_t) strtouint32(state->name, &endptr, 0);
if (errno || *endptr || (state->name == endptr)) {
tevent_req_error(req, errno ? errno : EINVAL);
return;
}
ret = sysdb_delete_user(state, state->sysdb,
state->domain, NULL, uid);
if (ret) {
tevent_req_error(req, ret);
return;
}
break;
default:
tevent_req_error(req, EINVAL);
return;
}
}
state->dp_error = DP_ERR_OK;
tevent_req_done(req);
}
int users_get_recv(struct tevent_req *req, int *dp_error_out)
{
struct users_get_state *state = tevent_req_data(req,
struct users_get_state);
if (dp_error_out) {
*dp_error_out = state->dp_error;
}
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
/* =Groups-Related-Functions-(by-name,by-uid)============================= */
struct groups_get_state {
struct tevent_context *ev;
struct sdap_id_ctx *ctx;
struct sdap_id_op *op;
struct sysdb_ctx *sysdb;
struct sss_domain_info *domain;
const char *name;
int filter_type;
char *filter;
const char **attrs;
int dp_error;
};
static int groups_get_retry(struct tevent_req *req);
static void groups_get_connect_done(struct tevent_req *subreq);
static void groups_get_done(struct tevent_req *subreq);
struct tevent_req *groups_get_send(TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sdap_id_ctx *ctx,
const char *name,
int filter_type,
int attrs_type)
{
struct tevent_req *req;
struct groups_get_state *state;
const char *attr_name;
int ret;
req = tevent_req_create(memctx, &state, struct groups_get_state);
if (!req) return NULL;
state->ev = ev;
state->ctx = ctx;
state->dp_error = DP_ERR_FATAL;
state->op = sdap_id_op_create(state, state->ctx->conn_cache);
if (!state->op) {
DEBUG(2, ("sdap_id_op_create failed\n"));
ret = ENOMEM;
goto fail;
}
state->sysdb = ctx->be->sysdb;
state->domain = state->ctx->be->domain;
state->name = name;
state->filter_type = filter_type;
switch(filter_type) {
case BE_FILTER_NAME:
attr_name = ctx->opts->group_map[SDAP_AT_GROUP_NAME].name;
break;
case BE_FILTER_IDNUM:
attr_name = ctx->opts->group_map[SDAP_AT_GROUP_GID].name;
break;
default:
ret = EINVAL;
goto fail;
}
state->filter = talloc_asprintf(state, "(&(%s=%s)(objectclass=%s))",
attr_name, name,
ctx->opts->group_map[SDAP_OC_GROUP].name);
if (!state->filter) {
DEBUG(2, ("Failed to build filter\n"));
ret = ENOMEM;
goto fail;
}
/* TODO: handle attrs_type */
ret = build_attrs_from_map(state, ctx->opts->group_map,
SDAP_OPTS_GROUP, &state->attrs);
if (ret != EOK) goto fail;
ret = groups_get_retry(req);
if (ret != EOK) {
goto fail;
}
return req;
fail:
tevent_req_error(req, ret);
tevent_req_post(req, ev);
return req;
}
static int groups_get_retry(struct tevent_req *req)
{
struct groups_get_state *state = tevent_req_data(req,
struct groups_get_state);
struct tevent_req *subreq;
int ret = EOK;
subreq = sdap_id_op_connect_send(state->op, state, &ret);
if (!subreq) {
return ret;
}
tevent_req_set_callback(subreq, groups_get_connect_done, req);
return EOK;
}
static void groups_get_connect_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct groups_get_state *state = tevent_req_data(req,
struct groups_get_state);
int dp_error = DP_ERR_FATAL;
int ret;
ret = sdap_id_op_connect_recv(subreq, &dp_error);
talloc_zfree(subreq);
if (ret != EOK) {
state->dp_error = dp_error;
tevent_req_error(req, ret);
return;
}
subreq = sdap_get_groups_send(state, state->ev,
state->domain, state->sysdb,
state->ctx->opts, sdap_id_op_handle(state->op),
state->attrs, state->filter);
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
tevent_req_set_callback(subreq, groups_get_done, req);
}
static void groups_get_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct groups_get_state *state = tevent_req_data(req,
struct groups_get_state);
char *endptr;
gid_t gid;
int dp_error = DP_ERR_FATAL;
int ret;
ret = sdap_get_groups_recv(subreq, NULL, NULL);
talloc_zfree(subreq);
ret = sdap_id_op_done(state->op, ret, &dp_error);
if (dp_error == DP_ERR_OK && ret != EOK) {
/* retry */
ret = groups_get_retry(req);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
return;
}
if (ret && ret != ENOENT) {
state->dp_error = dp_error;
tevent_req_error(req, ret);
return;
}
if (ret == ENOENT) {
if (strchr(state->name, '*')) {
/* it was an enumeration */
tevent_req_error(req, ret);
return;
}
switch (state->filter_type) {
case BE_FILTER_NAME:
ret = sysdb_delete_group(state, state->sysdb,
state->domain, state->name, 0);
if (ret) {
tevent_req_error(req, ret);
return;
}
break;
case BE_FILTER_IDNUM:
gid = (gid_t) strtouint32(state->name, &endptr, 0);
if (errno || *endptr || (state->name == endptr)) {
tevent_req_error(req, errno ? errno : EINVAL);
return;
}
ret = sysdb_delete_group(state, state->sysdb,
state->domain, NULL, gid);
if (ret) {
tevent_req_error(req, ret);
return;
}
break;
default:
tevent_req_error(req, EINVAL);
return;
}
}
state->dp_error = DP_ERR_OK;
tevent_req_done(req);
}
int groups_get_recv(struct tevent_req *req, int *dp_error_out)
{
struct groups_get_state *state = tevent_req_data(req,
struct groups_get_state);
if (dp_error_out) {
*dp_error_out = state->dp_error;
}
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
/* =Get-Groups-for-User================================================== */
struct groups_by_user_state {
struct tevent_context *ev;
struct sdap_id_ctx *ctx;
struct sdap_id_op *op;
const char *name;
const char **attrs;
int dp_error;
};
static int groups_by_user_retry(struct tevent_req *req);
static void groups_by_user_connect_done(struct tevent_req *subreq);
static void groups_by_user_done(struct tevent_req *subreq);
static struct tevent_req *groups_by_user_send(TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sdap_id_ctx *ctx,
const char *name)
{
struct tevent_req *req;
struct groups_by_user_state *state;
int ret;
req = tevent_req_create(memctx, &state, struct groups_by_user_state);
if (!req) return NULL;
state->ev = ev;
state->ctx = ctx;
state->dp_error = DP_ERR_FATAL;
state->op = sdap_id_op_create(state, state->ctx->conn_cache);
if (!state->op) {
DEBUG(2, ("sdap_id_op_create failed\n"));
ret = ENOMEM;
goto fail;
}
state->name = name;
ret = build_attrs_from_map(state, ctx->opts->group_map,
SDAP_OPTS_GROUP, &state->attrs);
if (ret != EOK) goto fail;
ret = groups_by_user_retry(req);
if (ret != EOK) {
goto fail;
}
return req;
fail:
tevent_req_error(req, ret);
tevent_req_post(req, ev);
return req;
}
static int groups_by_user_retry(struct tevent_req *req)
{
struct groups_by_user_state *state = tevent_req_data(req,
struct groups_by_user_state);
struct tevent_req *subreq;
int ret = EOK;
subreq = sdap_id_op_connect_send(state->op, state, &ret);
if (!subreq) {
return ret;
}
tevent_req_set_callback(subreq, groups_by_user_connect_done, req);
return EOK;
}
static void groups_by_user_connect_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct groups_by_user_state *state = tevent_req_data(req,
struct groups_by_user_state);
int dp_error = DP_ERR_FATAL;
int ret;
ret = sdap_id_op_connect_recv(subreq, &dp_error);
talloc_zfree(subreq);
if (ret != EOK) {
state->dp_error = dp_error;
tevent_req_error(req, ret);
return;
}
subreq = sdap_get_initgr_send(state, state->ev,
state->ctx->be->domain,
state->ctx->be->sysdb,
state->ctx->opts, sdap_id_op_handle(state->op),
state->name, state->attrs);
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
tevent_req_set_callback(subreq, groups_by_user_done, req);
}
static void groups_by_user_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct groups_by_user_state *state = tevent_req_data(req,
struct groups_by_user_state);
int dp_error = DP_ERR_FATAL;
int ret;
ret = sdap_get_initgr_recv(subreq);
talloc_zfree(subreq);
ret = sdap_id_op_done(state->op, ret, &dp_error);
if (dp_error == DP_ERR_OK && ret != EOK) {
/* retry */
ret = groups_by_user_retry(req);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
return;
}
if (ret && ret != ENOENT) {
state->dp_error = dp_error;
tevent_req_error(req, ret);
return;
}
state->dp_error = DP_ERR_OK;
tevent_req_done(req);
}
int groups_by_user_recv(struct tevent_req *req, int *dp_error_out)
{
struct groups_by_user_state *state = tevent_req_data(req,
struct groups_by_user_state);
if (dp_error_out) {
*dp_error_out = state->dp_error;
}
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
/* =Get-Account-Info-Call================================================= */
/* FIXME: embed this function in sssd_be and only call out
* specific functions from modules ? */
static void sdap_account_info_users_done(struct tevent_req *req);
static void sdap_account_info_groups_done(struct tevent_req *req);
static void sdap_account_info_initgr_done(struct tevent_req *req);
static void sdap_account_info_netgroups_done(struct tevent_req *req);
void sdap_account_info_handler(struct be_req *breq)
{
struct sdap_id_ctx *ctx;
struct be_acct_req *ar;
struct tevent_req *req;
const char *err = "Unknown Error";
int ret = EOK;
ctx = talloc_get_type(breq->be_ctx->bet_info[BET_ID].pvt_bet_data, struct sdap_id_ctx);
if (be_is_offline(ctx->be)) {
return sdap_handler_done(breq, DP_ERR_OFFLINE, EAGAIN, "Offline");
}
ar = talloc_get_type(breq->req_data, struct be_acct_req);
switch (ar->entry_type & 0xFFF) {
case BE_REQ_USER: /* user */
/* skip enumerations on demand */
if (strcmp(ar->filter_value, "*") == 0) {
return sdap_handler_done(breq, DP_ERR_OK, EOK, "Success");
}
req = users_get_send(breq, breq->be_ctx->ev, ctx,
ar->filter_value,
ar->filter_type,
ar->attr_type);
if (!req) {
return sdap_handler_done(breq, DP_ERR_FATAL, ENOMEM, "Out of memory");
}
tevent_req_set_callback(req, sdap_account_info_users_done, breq);
break;
case BE_REQ_GROUP: /* group */
if (strcmp(ar->filter_value, "*") == 0) {
return sdap_handler_done(breq, DP_ERR_OK, EOK, "Success");
}
/* skip enumerations on demand */
req = groups_get_send(breq, breq->be_ctx->ev, ctx,
ar->filter_value,
ar->filter_type,
ar->attr_type);
if (!req) {
return sdap_handler_done(breq, DP_ERR_FATAL, ENOMEM, "Out of memory");
}
tevent_req_set_callback(req, sdap_account_info_groups_done, breq);
break;
case BE_REQ_INITGROUPS: /* init groups for user */
if (ar->filter_type != BE_FILTER_NAME) {
ret = EINVAL;
err = "Invalid filter type";
break;
}
if (ar->attr_type != BE_ATTR_CORE) {
ret = EINVAL;
err = "Invalid attr type";
break;
}
if (strchr(ar->filter_value, '*')) {
ret = EINVAL;
err = "Invalid filter value";
break;
}
req = groups_by_user_send(breq, breq->be_ctx->ev, ctx,
ar->filter_value);
if (!req) ret = ENOMEM;
/* tevent_req_set_callback(req, groups_by_user_done, breq); */
tevent_req_set_callback(req, sdap_account_info_initgr_done, breq);
break;
case BE_REQ_NETGROUP:
if (ar->filter_type != BE_FILTER_NAME) {
ret = EINVAL;
err = "Invalid filter type";
break;
}
req = netgroup_get_send(breq, breq->be_ctx->ev, ctx, ar->filter_value);
if (!req) {
return sdap_handler_done(breq, DP_ERR_FATAL, ENOMEM, "Out of memory");
}
tevent_req_set_callback(req, sdap_account_info_netgroups_done, breq);
break;
default: /*fail*/
ret = EINVAL;
err = "Invalid request type";
}
if (ret != EOK) return sdap_handler_done(breq, DP_ERR_FATAL, ret, err);
}
static void sdap_account_info_complete(struct be_req *breq, int dp_error,
int ret, const char *default_error_text)
{
const char* error_text;
if (dp_error == DP_ERR_OK) {
if (ret == EOK) {
error_text = NULL;
} else {
DEBUG(1, ("Bug: dp_error is OK on failed request"));
dp_error = DP_ERR_FATAL;
error_text = default_error_text;
}
} else if (dp_error == DP_ERR_OFFLINE) {
error_text = "Offline";
} else if (dp_error == DP_ERR_FATAL && ret == ENOMEM) {
error_text = "Out of memory";
} else {
error_text = default_error_text;
}
sdap_handler_done(breq, dp_error, ret, error_text);
}
static void sdap_account_info_users_done(struct tevent_req *req)
{
struct be_req *breq = tevent_req_callback_data(req, struct be_req);
int ret, dp_error;
ret = users_get_recv(req, &dp_error);
talloc_zfree(req);
sdap_account_info_complete(breq, dp_error, ret, "User lookup failed");
}
static void sdap_account_info_groups_done(struct tevent_req *req)
{
struct be_req *breq = tevent_req_callback_data(req, struct be_req);
int ret, dp_error;
ret = groups_get_recv(req, &dp_error);
talloc_zfree(req);
sdap_account_info_complete(breq, dp_error, ret, "Group lookup failed");
}
static void sdap_account_info_initgr_done(struct tevent_req *req)
{
struct be_req *breq = tevent_req_callback_data(req, struct be_req);
int ret, dp_error;
ret = groups_by_user_recv(req, &dp_error);
talloc_zfree(req);
sdap_account_info_complete(breq, dp_error, ret, "Init Groups Failed");
}
static void sdap_account_info_netgroups_done(struct tevent_req *req)
{
struct be_req *breq = tevent_req_callback_data(req, struct be_req);
int ret, dp_error;
ret = netgroup_get_recv(req, &dp_error);
talloc_zfree(req);
sdap_account_info_complete(breq, dp_error, ret, "Netgroup lookup failed");
}