From 1c48b5a62f73234ed26bb20f0ab345ab61cda0ab Mon Sep 17 00:00:00 2001 From: Stephen Gallagher Date: Thu, 18 Feb 2010 07:49:04 -0500 Subject: Rename server/ directory to src/ Also update BUILD.txt --- src/providers/ldap/ldap_id_enum.c | 608 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 608 insertions(+) create mode 100644 src/providers/ldap/ldap_id_enum.c (limited to 'src/providers/ldap/ldap_id_enum.c') diff --git a/src/providers/ldap/ldap_id_enum.c b/src/providers/ldap/ldap_id_enum.c new file mode 100644 index 000000000..bc06e8bdc --- /dev/null +++ b/src/providers/ldap/ldap_id_enum.c @@ -0,0 +1,608 @@ +/* + SSSD + + LDAP Identity Enumeration + + Authors: + Simo Sorce + + Copyright (C) 2009 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 . +*/ + +#include +#include +#include + +#include "util/util.h" +#include "db/sysdb.h" +#include "providers/ldap/ldap_common.h" +#include "providers/ldap/sdap_async.h" + +extern struct tevent_req *ldap_id_cleanup_send(TALLOC_CTX *memctx, + struct tevent_context *ev, + struct sdap_id_ctx *ctx); + +/* ==Enumeration-Task===================================================== */ + +static struct tevent_req *ldap_id_enumerate_send(struct tevent_context *ev, + struct sdap_id_ctx *ctx); + +static void ldap_id_enumerate_reschedule(struct tevent_req *req); + +static void ldap_id_enumerate_timeout(struct tevent_context *ev, + struct tevent_timer *te, + struct timeval tv, void *pvt); + +static void ldap_id_enumerate_timer(struct tevent_context *ev, + struct tevent_timer *tt, + struct timeval tv, void *pvt) +{ + struct sdap_id_ctx *ctx = talloc_get_type(pvt, struct sdap_id_ctx); + struct tevent_timer *timeout; + struct tevent_req *req; + int delay; + + if (be_is_offline(ctx->be)) { + DEBUG(4, ("Backend is marked offline, retry later!\n")); + /* schedule starting from now, not the last run */ + delay = dp_opt_get_int(ctx->opts->basic, SDAP_ENUM_REFRESH_TIMEOUT); + tv = tevent_timeval_current_ofs(delay, 0); + ldap_id_enumerate_set_timer(ctx, tv); + return; + } + + req = ldap_id_enumerate_send(ev, ctx); + if (!req) { + DEBUG(1, ("Failed to schedule enumeration, retrying later!\n")); + /* schedule starting from now, not the last run */ + delay = dp_opt_get_int(ctx->opts->basic, SDAP_ENUM_REFRESH_TIMEOUT); + tv = tevent_timeval_current_ofs(delay, 0); + ldap_id_enumerate_set_timer(ctx, tv); + return; + } + tevent_req_set_callback(req, ldap_id_enumerate_reschedule, ctx); + + /* if enumeration takes so long, either we try to enumerate too + * frequently, or something went seriously wrong */ + delay = dp_opt_get_int(ctx->opts->basic, SDAP_ENUM_REFRESH_TIMEOUT); + tv = tevent_timeval_current_ofs(delay, 0); + timeout = tevent_add_timer(ctx->be->ev, req, tv, + ldap_id_enumerate_timeout, req); + return; +} + +static void ldap_id_enumerate_timeout(struct tevent_context *ev, + struct tevent_timer *te, + struct timeval tv, void *pvt) +{ + struct tevent_req *req = talloc_get_type(pvt, struct tevent_req); + struct sdap_id_ctx *ctx = tevent_req_callback_data(req, + struct sdap_id_ctx); + int delay; + + delay = dp_opt_get_int(ctx->opts->basic, SDAP_ENUM_REFRESH_TIMEOUT); + DEBUG(1, ("Enumeration timed out! Timeout too small? (%ds)!\n", delay)); + + tv = tevent_timeval_current_ofs(delay, 0); + ldap_id_enumerate_set_timer(ctx, tv); + + talloc_zfree(req); +} + +static void ldap_id_enumerate_reschedule(struct tevent_req *req) +{ + struct sdap_id_ctx *ctx = tevent_req_callback_data(req, + struct sdap_id_ctx); + enum tevent_req_state tstate; + uint64_t err; + struct timeval tv; + int delay; + + if (tevent_req_is_error(req, &tstate, &err)) { + /* On error schedule starting from now, not the last run */ + tv = tevent_timeval_current(); + } else { + tv = ctx->last_enum; + } + talloc_zfree(req); + + delay = dp_opt_get_int(ctx->opts->basic, SDAP_ENUM_REFRESH_TIMEOUT); + tv = tevent_timeval_add(&tv, delay, 0); + ldap_id_enumerate_set_timer(ctx, tv); +} + + + +int ldap_id_enumerate_set_timer(struct sdap_id_ctx *ctx, struct timeval tv) +{ + struct tevent_timer *enum_task; + + DEBUG(6, ("Scheduling next enumeration at %ld.%ld\n", + (long)tv.tv_sec, (long)tv.tv_usec)); + + enum_task = tevent_add_timer(ctx->be->ev, ctx, + tv, ldap_id_enumerate_timer, ctx); + if (!enum_task) { + DEBUG(0, ("FATAL: failed to setup enumeration task!\n")); + return EFAULT; + } + + return EOK; +} + + +struct global_enum_state { + struct tevent_context *ev; + struct sdap_id_ctx *ctx; + + bool purge; +}; + +static struct tevent_req *enum_users_send(TALLOC_CTX *memctx, + struct tevent_context *ev, + struct sdap_id_ctx *ctx, + bool purge); +static void ldap_id_enum_users_done(struct tevent_req *subreq); +static struct tevent_req *enum_groups_send(TALLOC_CTX *memctx, + struct tevent_context *ev, + struct sdap_id_ctx *ctx, + bool purge); +static void ldap_id_enum_groups_done(struct tevent_req *subreq); +static void ldap_id_enum_cleanup_done(struct tevent_req *subreq); + +static struct tevent_req *ldap_id_enumerate_send(struct tevent_context *ev, + struct sdap_id_ctx *ctx) +{ + struct global_enum_state *state; + struct tevent_req *req, *subreq; + int t; + + req = tevent_req_create(ctx, &state, struct global_enum_state); + if (!req) return NULL; + + state->ev = ev; + state->ctx = ctx; + + ctx->last_enum = tevent_timeval_current(); + + t = dp_opt_get_int(ctx->opts->basic, SDAP_CACHE_PURGE_TIMEOUT); + if ((ctx->last_purge.tv_sec + t) < ctx->last_enum.tv_sec) { + state->purge = true; + } else { + state->purge = false; + } + + subreq = enum_users_send(state, ev, ctx, state->purge); + if (!subreq) { + talloc_zfree(req); + return NULL; + } + tevent_req_set_callback(subreq, ldap_id_enum_users_done, req); + + return req; +} + +static void ldap_id_enum_users_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct global_enum_state *state = tevent_req_data(req, + struct global_enum_state); + enum tevent_req_state tstate; + uint64_t err = 0; + + if (tevent_req_is_error(subreq, &tstate, &err)) { + if (tstate != TEVENT_REQ_USER_ERROR) { + err = EIO; + } + if (err != ENOENT) { + goto fail; + } + } + talloc_zfree(subreq); + + subreq = enum_groups_send(state, state->ev, state->ctx, state->purge); + if (!subreq) { + goto fail; + } + tevent_req_set_callback(subreq, ldap_id_enum_groups_done, req); + + return; + +fail: + if (err) { + DEBUG(9, ("User enumeration failed with: (%d)[%s]\n", + (int)err, strerror(err))); + + if (sdap_check_gssapi_reconnect(state->ctx)) { + talloc_zfree(state->ctx->gsh); + subreq = enum_users_send(state, state->ev, state->ctx, state->purge); + if (subreq != NULL) { + tevent_req_set_callback(subreq, ldap_id_enum_users_done, req); + return; + } + } + sdap_mark_offline(state->ctx); + } + + DEBUG(1, ("Failed to enumerate users, retrying later!\n")); + tevent_req_done(req); +} + +static void ldap_id_enum_groups_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct global_enum_state *state = tevent_req_data(req, + struct global_enum_state); + enum tevent_req_state tstate; + uint64_t err = 0; + + if (tevent_req_is_error(subreq, &tstate, &err)) { + if (tstate != TEVENT_REQ_USER_ERROR) { + err = EIO; + } + if (err != ENOENT) { + goto fail; + } + } + talloc_zfree(subreq); + + if (state->purge) { + + subreq = ldap_id_cleanup_send(state, state->ev, state->ctx); + if (!subreq) { + goto fail; + } + tevent_req_set_callback(subreq, ldap_id_enum_cleanup_done, req); + + return; + } + + tevent_req_done(req); + return; + +fail: + /* check if credentials are expired otherwise go offline on failures */ + if (sdap_check_gssapi_reconnect(state->ctx)) { + talloc_zfree(state->ctx->gsh); + subreq = enum_groups_send(state, state->ev, state->ctx, state->purge); + if (subreq != NULL) { + tevent_req_set_callback(subreq, ldap_id_enum_groups_done, req); + return; + } + } + sdap_mark_offline(state->ctx); + DEBUG(1, ("Failed to enumerate groups (%d [%s]), retrying later!\n", + (int)err, strerror(err))); + tevent_req_done(req); +} + +static void ldap_id_enum_cleanup_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + talloc_zfree(subreq); + tevent_req_done(req); +} + + +/* ==User-Enumeration===================================================== */ + +struct enum_users_state { + struct tevent_context *ev; + struct sdap_id_ctx *ctx; + + char *filter; + const char **attrs; +}; + +static void enum_users_connect_done(struct tevent_req *subreq); +static void enum_users_op_done(struct tevent_req *subreq); + +static struct tevent_req *enum_users_send(TALLOC_CTX *memctx, + struct tevent_context *ev, + struct sdap_id_ctx *ctx, + bool purge) +{ + struct tevent_req *req, *subreq; + struct enum_users_state *state; + int ret; + + req = tevent_req_create(memctx, &state, struct enum_users_state); + if (!req) return NULL; + + state->ev = ev; + state->ctx = ctx; + + if (ctx->max_user_timestamp && !purge) { + + state->filter = talloc_asprintf(state, + "(&(%s=*)(objectclass=%s)(%s>=%s)(!(%s=%s)))", + ctx->opts->user_map[SDAP_AT_USER_NAME].name, + ctx->opts->user_map[SDAP_OC_USER].name, + ctx->opts->user_map[SDAP_AT_USER_MODSTAMP].name, + ctx->max_user_timestamp, + ctx->opts->user_map[SDAP_AT_USER_MODSTAMP].name, + ctx->max_user_timestamp); + } else { + state->filter = talloc_asprintf(state, + "(&(%s=*)(objectclass=%s))", + ctx->opts->user_map[SDAP_AT_USER_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; + + if (!sdap_connected(ctx)) { + + if (ctx->gsh) talloc_zfree(ctx->gsh); + + /* FIXME: add option to decide if tls should be used + * or SASL/GSSAPI, etc ... */ + subreq = sdap_cli_connect_send(state, ev, ctx->opts, + ctx->be, ctx->service, + &ctx->rootDSE); + if (!subreq) { + ret = ENOMEM; + goto fail; + } + + tevent_req_set_callback(subreq, enum_users_connect_done, req); + + return req; + } + + subreq = sdap_get_users_send(state, state->ev, + state->ctx->be->domain, + state->ctx->be->sysdb, + state->ctx->opts, + state->ctx->gsh, + state->attrs, state->filter); + if (!subreq) { + ret = ENOMEM; + goto fail; + } + tevent_req_set_callback(subreq, enum_users_op_done, req); + + return req; + +fail: + tevent_req_error(req, ret); + tevent_req_post(req, ev); + return req; +} + +static void enum_users_connect_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct enum_users_state *state = tevent_req_data(req, + struct enum_users_state); + int ret; + + ret = sdap_cli_connect_recv(subreq, state->ctx, + &state->ctx->gsh, &state->ctx->rootDSE); + talloc_zfree(subreq); + if (ret) { + if (ret == ENOTSUP) { + DEBUG(0, ("Authentication mechanism not Supported by server")); + } + tevent_req_error(req, ret); + return; + } + + subreq = sdap_get_users_send(state, state->ev, + state->ctx->be->domain, + state->ctx->be->sysdb, + state->ctx->opts, state->ctx->gsh, + state->attrs, state->filter); + if (!subreq) { + tevent_req_error(req, ENOMEM); + return; + } + tevent_req_set_callback(subreq, enum_users_op_done, req); +} + +static void enum_users_op_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct enum_users_state *state = tevent_req_data(req, + struct enum_users_state); + char *timestamp; + int ret; + + ret = sdap_get_users_recv(subreq, state, ×tamp); + talloc_zfree(subreq); + if (ret) { + tevent_req_error(req, ret); + return; + } + + if (timestamp) { + talloc_zfree(state->ctx->max_user_timestamp); + state->ctx->max_user_timestamp = talloc_steal(state->ctx, timestamp); + } + + DEBUG(4, ("Users higher timestamp: [%s]\n", + state->ctx->max_user_timestamp)); + + tevent_req_done(req); +} + +/* =Group-Enumeration===================================================== */ + +struct enum_groups_state { + struct tevent_context *ev; + struct sdap_id_ctx *ctx; + + char *filter; + const char **attrs; +}; + +static void enum_groups_connect_done(struct tevent_req *subreq); +static void enum_groups_op_done(struct tevent_req *subreq); + +static struct tevent_req *enum_groups_send(TALLOC_CTX *memctx, + struct tevent_context *ev, + struct sdap_id_ctx *ctx, + bool purge) +{ + struct tevent_req *req, *subreq; + struct enum_groups_state *state; + const char *attr_name; + int ret; + + req = tevent_req_create(memctx, &state, struct enum_groups_state); + if (!req) return NULL; + + state->ev = ev; + state->ctx = ctx; + + attr_name = ctx->opts->group_map[SDAP_AT_GROUP_NAME].name; + + if (ctx->max_group_timestamp && !purge) { + + state->filter = talloc_asprintf(state, + "(&(%s=*)(objectclass=%s)(%s>=%s)(!(%s=%s)))", + ctx->opts->group_map[SDAP_AT_GROUP_NAME].name, + ctx->opts->group_map[SDAP_OC_GROUP].name, + ctx->opts->group_map[SDAP_AT_GROUP_MODSTAMP].name, + ctx->max_group_timestamp, + ctx->opts->group_map[SDAP_AT_GROUP_MODSTAMP].name, + ctx->max_group_timestamp); + } else { + state->filter = talloc_asprintf(state, + "(&(%s=*)(objectclass=%s))", + ctx->opts->group_map[SDAP_AT_GROUP_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; + + if (!sdap_connected(ctx)) { + + if (ctx->gsh) talloc_zfree(ctx->gsh); + + /* FIXME: add option to decide if tls should be used + * or SASL/GSSAPI, etc ... */ + subreq = sdap_cli_connect_send(state, ev, ctx->opts, + ctx->be, ctx->service, + &ctx->rootDSE); + if (!subreq) { + ret = ENOMEM; + goto fail; + } + + tevent_req_set_callback(subreq, enum_groups_connect_done, req); + + return req; + } + + subreq = sdap_get_groups_send(state, state->ev, + state->ctx->be->domain, + state->ctx->be->sysdb, + state->ctx->opts, state->ctx->gsh, + state->attrs, state->filter); + if (!subreq) { + ret = ENOMEM; + goto fail; + } + tevent_req_set_callback(subreq, enum_groups_op_done, req); + + return req; + +fail: + tevent_req_error(req, ret); + tevent_req_post(req, ev); + return req; +} + +static void enum_groups_connect_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct enum_groups_state *state = tevent_req_data(req, + struct enum_groups_state); + int ret; + + ret = sdap_cli_connect_recv(subreq, state->ctx, + &state->ctx->gsh, &state->ctx->rootDSE); + talloc_zfree(subreq); + if (ret) { + if (ret == ENOTSUP) { + DEBUG(0, ("Authentication mechanism not Supported by server")); + } + tevent_req_error(req, ret); + return; + } + + subreq = sdap_get_groups_send(state, state->ev, + state->ctx->be->domain, + state->ctx->be->sysdb, + state->ctx->opts, state->ctx->gsh, + state->attrs, state->filter); + if (!subreq) { + tevent_req_error(req, ENOMEM); + return; + } + tevent_req_set_callback(subreq, enum_groups_op_done, req); +} + +static void enum_groups_op_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct enum_groups_state *state = tevent_req_data(req, + struct enum_groups_state); + char *timestamp; + int ret; + + ret = sdap_get_groups_recv(subreq, state, ×tamp); + talloc_zfree(subreq); + if (ret) { + tevent_req_error(req, ret); + return; + } + + if (timestamp) { + talloc_zfree(state->ctx->max_group_timestamp); + state->ctx->max_group_timestamp = talloc_steal(state->ctx, timestamp); + } + + DEBUG(4, ("Groups higher timestamp: [%s]\n", + state->ctx->max_group_timestamp)); + + tevent_req_done(req); +} + -- cgit