diff options
Diffstat (limited to 'src/db/sysdb_search.c')
| -rw-r--r-- | src/db/sysdb_search.c | 691 |
1 files changed, 691 insertions, 0 deletions
diff --git a/src/db/sysdb_search.c b/src/db/sysdb_search.c new file mode 100644 index 000000000..4b9470baa --- /dev/null +++ b/src/db/sysdb_search.c @@ -0,0 +1,691 @@ +/* + SSSD + + System Database + + Copyright (C) Simo Sorce <ssorce@redhat.com> 2008 + + 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 "util/util.h" +#include "db/sysdb_private.h" +#include "confdb/confdb.h" +#include <time.h> + +struct sysdb_search_ctx; + +typedef void (*gen_callback)(struct sysdb_search_ctx *); + +struct sysdb_search_ctx { + struct tevent_context *ev; + struct sysdb_ctx *ctx; + struct sysdb_handle *handle; + + struct sss_domain_info *domain; + + const char *expression; + + sysdb_callback_t callback; + void *ptr; + + gen_callback gen_aux_fn; + bool gen_conv_mpg_users; + + struct ldb_result *res; + + const char **attrs; + + int error; +}; + +static struct sysdb_search_ctx *init_src_ctx(TALLOC_CTX *mem_ctx, + struct sss_domain_info *domain, + struct sysdb_ctx *ctx, + sysdb_callback_t fn, + void *ptr) +{ + struct sysdb_search_ctx *sctx; + + sctx = talloc_zero(mem_ctx, struct sysdb_search_ctx); + if (!sctx) { + return NULL; + } + sctx->ctx = ctx; + sctx->ev = ctx->ev; + sctx->callback = fn; + sctx->ptr = ptr; + sctx->res = talloc_zero(sctx, struct ldb_result); + if (!sctx->res) { + talloc_free(sctx); + return NULL; + } + sctx->domain = domain; + + return sctx; +} + +static void request_ldberror(struct sysdb_search_ctx *sctx, int error) +{ + sysdb_operation_done(sctx->handle); + sctx->callback(sctx->ptr, sysdb_error_to_errno(error), NULL); +} + +static void request_error(struct sysdb_search_ctx *sctx, int error) +{ + sysdb_operation_done(sctx->handle); + sctx->callback(sctx->ptr, error, NULL); +} + +static void request_done(struct sysdb_search_ctx *sctx) +{ + sysdb_operation_done(sctx->handle); + sctx->callback(sctx->ptr, EOK, sctx->res); +} + +static int mpg_convert(struct ldb_message *msg); + +static int get_gen_callback(struct ldb_request *req, + struct ldb_reply *rep) +{ + struct sysdb_search_ctx *sctx; + struct ldb_result *res; + int n, ret; + + sctx = talloc_get_type(req->context, struct sysdb_search_ctx); + res = sctx->res; + + if (!rep) { + request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + return LDB_ERR_OPERATIONS_ERROR; + } + if (rep->error != LDB_SUCCESS) { + request_ldberror(sctx, rep->error); + return rep->error; + } + + switch (rep->type) { + case LDB_REPLY_ENTRY: + + if (sctx->gen_conv_mpg_users) { + ret = mpg_convert(rep->message); + if (ret != EOK) { + request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + return LDB_ERR_OPERATIONS_ERROR; + } + } + + res->msgs = talloc_realloc(res, res->msgs, + struct ldb_message *, + res->count + 2); + if (!res->msgs) { + request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + return LDB_ERR_OPERATIONS_ERROR; + } + + res->msgs[res->count + 1] = NULL; + + res->msgs[res->count] = talloc_steal(res->msgs, rep->message); + res->count++; + break; + + case LDB_REPLY_REFERRAL: + if (res->refs) { + for (n = 0; res->refs[n]; n++) /*noop*/ ; + } else { + n = 0; + } + + res->refs = talloc_realloc(res, res->refs, char *, n + 2); + if (! res->refs) { + request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + return LDB_ERR_OPERATIONS_ERROR; + } + + res->refs[n] = talloc_steal(res->refs, rep->referral); + res->refs[n + 1] = NULL; + break; + + case LDB_REPLY_DONE: + res->controls = talloc_steal(res, rep->controls); + + /* check if we need to call any aux function */ + if (sctx->gen_aux_fn) { + sctx->gen_aux_fn(sctx); + } else { + /* no aux functions, this means the request is done */ + request_done(sctx); + } + return LDB_SUCCESS; + } + + talloc_free(rep); + return LDB_SUCCESS; +} + +/* users */ + +static void user_search(struct tevent_req *treq) +{ + struct sysdb_search_ctx *sctx; + struct ldb_request *req; + struct ldb_dn *base_dn; + int ret; + + sctx = tevent_req_callback_data(treq, struct sysdb_search_ctx); + + ret = sysdb_operation_recv(treq, sctx, &sctx->handle); + if (ret) { + return request_error(sctx, ret); + } + + base_dn = ldb_dn_new_fmt(sctx, sctx->ctx->ldb, + SYSDB_TMPL_USER_BASE, sctx->domain->name); + if (!base_dn) { + return request_error(sctx, ENOMEM); + } + + ret = ldb_build_search_req(&req, sctx->ctx->ldb, sctx, + base_dn, LDB_SCOPE_SUBTREE, + sctx->expression, sctx->attrs, NULL, + sctx, get_gen_callback, + NULL); + if (ret != LDB_SUCCESS) { + return request_ldberror(sctx, ret); + } + + ret = ldb_request(sctx->ctx->ldb, req); + if (ret != LDB_SUCCESS) { + return request_ldberror(sctx, ret); + } +} + +int sysdb_getpwnam(TALLOC_CTX *mem_ctx, + struct sysdb_ctx *ctx, + struct sss_domain_info *domain, + const char *name, + sysdb_callback_t fn, void *ptr) +{ + static const char *attrs[] = SYSDB_PW_ATTRS; + struct sysdb_search_ctx *sctx; + struct tevent_req *req; + + if (!domain) { + return EINVAL; + } + + sctx = init_src_ctx(mem_ctx, domain, ctx, fn, ptr); + if (!sctx) { + return ENOMEM; + } + + sctx->expression = talloc_asprintf(sctx, SYSDB_PWNAM_FILTER, name); + if (!sctx->expression) { + talloc_free(sctx); + return ENOMEM; + } + + sctx->attrs = attrs; + + req = sysdb_operation_send(mem_ctx, ctx->ev, ctx); + if (!req) { + talloc_free(sctx); + return ENOMEM; + } + + tevent_req_set_callback(req, user_search, sctx); + + return EOK; +} + +int sysdb_getpwuid(TALLOC_CTX *mem_ctx, + struct sysdb_ctx *ctx, + struct sss_domain_info *domain, + uid_t uid, + sysdb_callback_t fn, void *ptr) +{ + static const char *attrs[] = SYSDB_PW_ATTRS; + struct sysdb_search_ctx *sctx; + unsigned long int filter_uid = uid; + struct tevent_req *req; + + if (!domain) { + return EINVAL; + } + + sctx = init_src_ctx(mem_ctx, domain, ctx, fn, ptr); + if (!sctx) { + return ENOMEM; + } + + sctx->expression = talloc_asprintf(sctx, SYSDB_PWUID_FILTER, filter_uid); + if (!sctx->expression) { + talloc_free(sctx); + return ENOMEM; + } + + sctx->attrs = attrs; + + req = sysdb_operation_send(mem_ctx, ctx->ev, ctx); + if (!req) { + talloc_free(sctx); + return ENOMEM; + } + + tevent_req_set_callback(req, user_search, sctx); + + return EOK; +} + +int sysdb_enumpwent(TALLOC_CTX *mem_ctx, + struct sysdb_ctx *ctx, + struct sss_domain_info *domain, + const char *expression, + sysdb_callback_t fn, void *ptr) +{ + static const char *attrs[] = SYSDB_PW_ATTRS; + struct sysdb_search_ctx *sctx; + struct tevent_req *req; + + if (!domain) { + return EINVAL; + } + + sctx = init_src_ctx(mem_ctx, domain, ctx, fn, ptr); + if (!sctx) { + return ENOMEM; + } + + if (expression) + sctx->expression = expression; + else + sctx->expression = SYSDB_PWENT_FILTER; + + sctx->attrs = attrs; + + req = sysdb_operation_send(mem_ctx, ctx->ev, ctx); + if (!req) { + talloc_free(sctx); + return ENOMEM; + } + + tevent_req_set_callback(req, user_search, sctx); + + return EOK; +} + +/* groups */ + +static int mpg_convert(struct ldb_message *msg) +{ + struct ldb_message_element *el; + struct ldb_val *val; + int i; + + el = ldb_msg_find_element(msg, "objectClass"); + if (!el) return EINVAL; + + /* see if this is a user to convert to a group */ + for (i = 0; i < el->num_values; i++) { + val = &(el->values[i]); + if (strncasecmp(SYSDB_USER_CLASS, + (char *)val->data, val->length) == 0) { + break; + } + } + /* no, leave as is */ + if (i == el->num_values) return EOK; + + /* yes, convert */ + val->data = (uint8_t *)talloc_strdup(msg, SYSDB_GROUP_CLASS); + if (val->data == NULL) return ENOMEM; + val->length = strlen(SYSDB_GROUP_CLASS); + + return EOK; +} + +static void grp_search(struct tevent_req *treq) +{ + struct sysdb_search_ctx *sctx; + static const char *attrs[] = SYSDB_GRSRC_ATTRS; + struct ldb_request *req; + struct ldb_dn *base_dn; + int ret; + + sctx = tevent_req_callback_data(treq, struct sysdb_search_ctx); + + ret = sysdb_operation_recv(treq, sctx, &sctx->handle); + if (ret) { + return request_error(sctx, ret); + } + + if (sctx->gen_conv_mpg_users) { + base_dn = ldb_dn_new_fmt(sctx, sctx->ctx->ldb, + SYSDB_DOM_BASE, sctx->domain->name); + } else { + base_dn = ldb_dn_new_fmt(sctx, sctx->ctx->ldb, + SYSDB_TMPL_GROUP_BASE, sctx->domain->name); + } + if (!base_dn) { + return request_error(sctx, ENOMEM); + } + + ret = ldb_build_search_req(&req, sctx->ctx->ldb, sctx, + base_dn, LDB_SCOPE_SUBTREE, + sctx->expression, attrs, NULL, + sctx, get_gen_callback, + NULL); + if (ret != LDB_SUCCESS) { + return request_ldberror(sctx, ret); + } + + ret = ldb_request(sctx->ctx->ldb, req); + if (ret != LDB_SUCCESS) { + return request_ldberror(sctx, ret); + } +} + +int sysdb_getgrnam(TALLOC_CTX *mem_ctx, + struct sysdb_ctx *ctx, + struct sss_domain_info *domain, + const char *name, + sysdb_callback_t fn, void *ptr) +{ + struct sysdb_search_ctx *sctx; + struct tevent_req *req; + + if (!domain) { + return EINVAL; + } + + sctx = init_src_ctx(mem_ctx, domain, ctx, fn, ptr); + if (!sctx) { + return ENOMEM; + } + + if (ctx->mpg) { + sctx->gen_conv_mpg_users = true; + sctx->expression = talloc_asprintf(sctx, SYSDB_GRNAM_MPG_FILTER, name); + } else { + sctx->expression = talloc_asprintf(sctx, SYSDB_GRNAM_FILTER, name); + } + if (!sctx->expression) { + talloc_free(sctx); + return ENOMEM; + } + + req = sysdb_operation_send(mem_ctx, ctx->ev, ctx); + if (!req) { + talloc_free(sctx); + return ENOMEM; + } + + tevent_req_set_callback(req, grp_search, sctx); + + return EOK; +} + +int sysdb_getgrgid(TALLOC_CTX *mem_ctx, + struct sysdb_ctx *ctx, + struct sss_domain_info *domain, + gid_t gid, + sysdb_callback_t fn, void *ptr) +{ + struct sysdb_search_ctx *sctx; + struct tevent_req *req; + + if (!domain) { + return EINVAL; + } + + sctx = init_src_ctx(mem_ctx, domain, ctx, fn, ptr); + if (!sctx) { + return ENOMEM; + } + + if (ctx->mpg) { + sctx->gen_conv_mpg_users = true; + sctx->expression = talloc_asprintf(sctx, + SYSDB_GRGID_MPG_FILTER, + (unsigned long int)gid); + } else { + sctx->expression = talloc_asprintf(sctx, + SYSDB_GRGID_FILTER, + (unsigned long int)gid); + } + if (!sctx->expression) { + talloc_free(sctx); + return ENOMEM; + } + + req = sysdb_operation_send(mem_ctx, ctx->ev, ctx); + if (!req) { + talloc_free(sctx); + return ENOMEM; + } + + tevent_req_set_callback(req, grp_search, sctx); + + return EOK; +} + +int sysdb_enumgrent(TALLOC_CTX *mem_ctx, + struct sysdb_ctx *ctx, + struct sss_domain_info *domain, + sysdb_callback_t fn, void *ptr) +{ + struct sysdb_search_ctx *sctx; + struct tevent_req *req; + + if (!domain) { + return EINVAL; + } + + sctx = init_src_ctx(mem_ctx, domain, ctx, fn, ptr); + if (!sctx) { + return ENOMEM; + } + + if (ctx->mpg) { + sctx->gen_conv_mpg_users = true; + sctx->expression = SYSDB_GRENT_MPG_FILTER; + } else { + sctx->expression = SYSDB_GRENT_FILTER; + } + + req = sysdb_operation_send(mem_ctx, ctx->ev, ctx); + if (!req) { + talloc_free(sctx); + return ENOMEM; + } + + tevent_req_set_callback(req, grp_search, sctx); + + return EOK; +} + +static void initgr_mem_search(struct sysdb_search_ctx *sctx) +{ + struct sysdb_ctx *ctx = sctx->ctx; + struct ldb_result *res = sctx->res; + struct ldb_request *req; + struct ldb_control **ctrl; + struct ldb_asq_control *control; + static const char *attrs[] = SYSDB_INITGR_ATTRS; + int ret; + + if (res->count == 0) { + return request_done(sctx); + } + if (res->count > 1) { + return request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + } + + /* make sure we don't loop with get_gen_callback() */ + sctx->gen_aux_fn = NULL; + + sctx->expression = talloc_asprintf(sctx, SYSDB_INITGR_FILTER); + if (!sctx->expression) { + return request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + } + + ctrl = talloc_array(sctx, struct ldb_control *, 2); + if (!ctrl) { + return request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + } + ctrl[1] = NULL; + ctrl[0] = talloc(ctrl, struct ldb_control); + if (!ctrl[0]) { + return request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + } + ctrl[0]->oid = LDB_CONTROL_ASQ_OID; + ctrl[0]->critical = 1; + control = talloc(ctrl[0], struct ldb_asq_control); + if (!control) { + return request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + } + control->request = 1; + control->source_attribute = talloc_strdup(control, SYSDB_INITGR_ATTR); + if (!control->source_attribute) { + return request_ldberror(sctx, LDB_ERR_OPERATIONS_ERROR); + } + control->src_attr_len = strlen(control->source_attribute); + ctrl[0]->data = control; + + ret = ldb_build_search_req(&req, ctx->ldb, sctx, + res->msgs[0]->dn, + LDB_SCOPE_BASE, + sctx->expression, attrs, ctrl, + sctx, get_gen_callback, + NULL); + if (ret != LDB_SUCCESS) { + return request_ldberror(sctx, ret); + } + + ret = ldb_request(ctx->ldb, req); + if (ret != LDB_SUCCESS) { + return request_ldberror(sctx, ret); + } +} + +static void initgr_search(struct tevent_req *treq) +{ + struct sysdb_search_ctx *sctx; + static const char *attrs[] = SYSDB_PW_ATTRS; + struct ldb_request *req; + struct ldb_dn *base_dn; + int ret; + + sctx = tevent_req_callback_data(treq, struct sysdb_search_ctx); + + ret = sysdb_operation_recv(treq, sctx, &sctx->handle); + if (ret) { + return request_error(sctx, ret); + } + + sctx->gen_aux_fn = initgr_mem_search; + + base_dn = ldb_dn_new_fmt(sctx, sctx->ctx->ldb, + SYSDB_TMPL_USER_BASE, sctx->domain->name); + if (!base_dn) { + return request_error(sctx, ENOMEM); + } + + ret = ldb_build_search_req(&req, sctx->ctx->ldb, sctx, + base_dn, LDB_SCOPE_SUBTREE, + sctx->expression, attrs, NULL, + sctx, get_gen_callback, + NULL); + if (ret != LDB_SUCCESS) { + return request_ldberror(sctx, ret); + } + + ret = ldb_request(sctx->ctx->ldb, req); + if (ret != LDB_SUCCESS) { + return request_ldberror(sctx, ret); + } +} + +int sysdb_initgroups(TALLOC_CTX *mem_ctx, + struct sysdb_ctx *ctx, + struct sss_domain_info *domain, + const char *name, + sysdb_callback_t fn, void *ptr) +{ + struct sysdb_search_ctx *sctx; + struct tevent_req *req; + + if (!domain) { + return EINVAL; + } + + sctx = init_src_ctx(mem_ctx, domain, ctx, fn, ptr); + if (!sctx) { + return ENOMEM; + } + + sctx->expression = talloc_asprintf(sctx, SYSDB_PWNAM_FILTER, name); + if (!sctx->expression) { + talloc_free(sctx); + return ENOMEM; + } + + req = sysdb_operation_send(mem_ctx, ctx->ev, ctx); + if (!req) { + talloc_free(sctx); + return ENOMEM; + } + + tevent_req_set_callback(req, initgr_search, sctx); + + return EOK; +} + +int sysdb_get_user_attr(TALLOC_CTX *mem_ctx, + struct sysdb_ctx *ctx, + struct sss_domain_info *domain, + const char *name, + const char **attributes, + sysdb_callback_t fn, void *ptr) +{ + struct sysdb_search_ctx *sctx; + struct tevent_req *req; + + if (!domain) { + return EINVAL; + } + + sctx = init_src_ctx(mem_ctx, domain, ctx, fn, ptr); + if (!sctx) { + return ENOMEM; + } + + sctx->expression = talloc_asprintf(sctx, SYSDB_PWNAM_FILTER, name); + if (!sctx->expression) { + talloc_free(sctx); + return ENOMEM; + } + + sctx->attrs = attributes; + + req = sysdb_operation_send(mem_ctx, ctx->ev, ctx); + if (!req) { + talloc_free(sctx); + return ENOMEM; + } + + tevent_req_set_callback(req, user_search, sctx); + + return EOK; +} |