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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 17:47:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 17:47:29 +0000 |
commit | 4f5791ebd03eaec1c7da0865a383175b05102712 (patch) | |
tree | 8ce7b00f7a76baa386372422adebbe64510812d4 /lib/ldb/nssldb/ldb-grp.c | |
parent | Initial commit. (diff) | |
download | samba-4f5791ebd03eaec1c7da0865a383175b05102712.tar.xz samba-4f5791ebd03eaec1c7da0865a383175b05102712.zip |
Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/ldb/nssldb/ldb-grp.c')
-rw-r--r-- | lib/ldb/nssldb/ldb-grp.c | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/lib/ldb/nssldb/ldb-grp.c b/lib/ldb/nssldb/ldb-grp.c new file mode 100644 index 0000000..5e7556d --- /dev/null +++ b/lib/ldb/nssldb/ldb-grp.c @@ -0,0 +1,429 @@ +/* + LDB nsswitch module + + Copyright (C) Simo Sorce 2006 + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 3 of the License, or (at your option) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "ldb-nss.h" + +extern struct _ldb_nss_context *_ldb_nss_ctx; + +const char *_ldb_nss_gr_attrs[] = { + "cn", + "userPassword", + "gidNumber", + NULL +}; + +const char *_ldb_nss_mem_attrs[] = { + "uid", + NULL +}; + +#define _NSS_LDB_ENOMEM(amem) \ + do { \ + if ( ! amem) { \ + errno = ENOMEM; \ + talloc_free(memctx); \ + return NSS_STATUS_UNAVAIL; \ + } \ + } while(0) + +/* This setgrent, getgrent, endgrent is not very efficient */ + +NSS_STATUS _nss_ldb_setgrent(void) +{ + int ret; + + ret = _ldb_nss_init(); + if (ret != NSS_STATUS_SUCCESS) { + return ret; + } + + _ldb_nss_ctx->gr_cur = 0; + if (_ldb_nss_ctx->gr_res != NULL) { + talloc_free(_ldb_nss_ctx->gr_res); + _ldb_nss_ctx->gr_res = NULL; + } + + ret = ldb_search(_ldb_nss_ctx->ldb, + _ldb_nss_ctx->ldb, + &_ldb_nss_ctx->gr_res, + _ldb_nss_ctx->base, + LDB_SCOPE_SUBTREE, + _ldb_nss_gr_attrs, + _LDB_NSS_GRENT_FILTER); + if (ret != LDB_SUCCESS) { + return NSS_STATUS_UNAVAIL; + } + + return NSS_STATUS_SUCCESS; +} + +NSS_STATUS _nss_ldb_endgrent(void) +{ + int ret; + + ret = _ldb_nss_init(); + if (ret != NSS_STATUS_SUCCESS) { + return ret; + } + + _ldb_nss_ctx->gr_cur = 0; + if (_ldb_nss_ctx->gr_res) { + talloc_free(_ldb_nss_ctx->gr_res); + _ldb_nss_ctx->gr_res = NULL; + } + + return NSS_STATUS_SUCCESS; +} + +NSS_STATUS _nss_ldb_getgrent_r(struct group *result_buf, char *buffer, size_t buflen, int *errnop) +{ + int ret; + struct ldb_result *res; + + ret = _ldb_nss_init(); + if (ret != NSS_STATUS_SUCCESS) { + return ret; + } + + *errnop = 0; + + if (_ldb_nss_ctx->gr_cur >= _ldb_nss_ctx->gr_res->count) { + /* already returned all entries */ + return NSS_STATUS_NOTFOUND; + } + + res = talloc_zero(_ldb_nss_ctx->gr_res, struct ldb_result); + if ( ! res) { + errno = *errnop = ENOMEM; + _ldb_nss_ctx->gr_cur++; /* skip this entry */ + return NSS_STATUS_UNAVAIL; + } + + ret = _ldb_nss_group_request(&res, + _ldb_nss_ctx->gr_res->msgs[_ldb_nss_ctx->gr_cur]->dn, + _ldb_nss_mem_attrs, + "member"); + + if (ret != NSS_STATUS_SUCCESS) { + *errnop = errno; + talloc_free(res); + _ldb_nss_ctx->gr_cur++; /* skip this entry */ + return ret; + } + + ret = _ldb_nss_fill_group(result_buf, + buffer, + buflen, + errnop, + _ldb_nss_ctx->gr_res->msgs[_ldb_nss_ctx->gr_cur], + res); + + talloc_free(res); + + if (ret != NSS_STATUS_SUCCESS) { + if (ret != NSS_STATUS_TRYAGAIN) { + _ldb_nss_ctx->gr_cur++; /* skip this entry */ + } + return ret; + } + + /* this entry is ok, increment counter to nex entry */ + _ldb_nss_ctx->gr_cur++; + + return NSS_STATUS_SUCCESS; +} + +NSS_STATUS _nss_ldb_getgrnam_r(const char *name, struct group *result_buf, char *buffer, size_t buflen, int *errnop) +{ + int ret; + char *filter; + TALLOC_CTX *ctx; + struct ldb_result *gr_res; + struct ldb_result *mem_res; + + ret = _ldb_nss_init(); + if (ret != NSS_STATUS_SUCCESS) { + return ret; + } + + ctx = talloc_new(_ldb_nss_ctx->ldb); + if ( ! ctx) { + *errnop = errno = ENOMEM; + return NSS_STATUS_UNAVAIL; + } + + /* build the filter for this uid */ + filter = talloc_asprintf(ctx, _LDB_NSS_GRNAM_FILTER, name); + if (filter == NULL) { + /* this is a fatal error */ + *errnop = errno = ENOMEM; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + /* search the entry */ + ret = ldb_search(_ldb_nss_ctx->ldb, + _ldb_nss_ctx->ldb, + &gr_res, + _ldb_nss_ctx->base, + LDB_SCOPE_SUBTREE, + _ldb_nss_gr_attrs, + filter); + if (ret != LDB_SUCCESS) { + /* this is a fatal error */ + *errnop = errno = ENOENT; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + talloc_steal(ctx, gr_res); + + /* if none found return */ + if (gr_res->count == 0) { + *errnop = errno = ENOENT; + ret = NSS_STATUS_NOTFOUND; + goto done; + } + + if (gr_res->count != 1) { + /* this is a fatal error */ + *errnop = errno = ENOENT; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + mem_res = talloc_zero(ctx, struct ldb_result); + if ( ! mem_res) { + errno = *errnop = ENOMEM; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + ret = _ldb_nss_group_request(&mem_res, + gr_res->msgs[0]->dn, + _ldb_nss_mem_attrs, + "member"); + + if (ret != NSS_STATUS_SUCCESS) { + *errnop = errno; + goto done; + } + + ret = _ldb_nss_fill_group(result_buf, + buffer, + buflen, + errnop, + gr_res->msgs[0], + mem_res); + + if (ret != NSS_STATUS_SUCCESS) { + goto done; + } + + ret = NSS_STATUS_SUCCESS; +done: + talloc_free(ctx); + return ret; +} + +NSS_STATUS _nss_ldb_getgrgid_r(gid_t gid, struct group *result_buf, char *buffer, size_t buflen, int *errnop) +{ + int ret; + char *filter; + TALLOC_CTX *ctx; + struct ldb_result *gr_res; + struct ldb_result *mem_res; + + if (gid == 0) { /* we don't serve root gid by policy */ + *errnop = errno = ENOENT; + return NSS_STATUS_NOTFOUND; + } + + ret = _ldb_nss_init(); + if (ret != NSS_STATUS_SUCCESS) { + return ret; + } + + ctx = talloc_new(_ldb_nss_ctx->ldb); + if ( ! ctx) { + *errnop = errno = ENOMEM; + return NSS_STATUS_UNAVAIL; + } + + /* build the filter for this uid */ + filter = talloc_asprintf(ctx, _LDB_NSS_GRGID_FILTER, gid); + if (filter == NULL) { + /* this is a fatal error */ + *errnop = errno = ENOMEM; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + /* search the entry */ + ret = ldb_search(_ldb_nss_ctx->ldb, + _ldb_nss_ctx->ldb, + &gr_res, + _ldb_nss_ctx->base, + LDB_SCOPE_SUBTREE, + _ldb_nss_gr_attrs, + filter); + if (ret != LDB_SUCCESS) { + /* this is a fatal error */ + *errnop = errno = ENOENT; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + talloc_steal(ctx, gr_res); + + /* if none found return */ + if (gr_res->count == 0) { + *errnop = errno = ENOENT; + ret = NSS_STATUS_NOTFOUND; + goto done; + } + + if (gr_res->count != 1) { + /* this is a fatal error */ + *errnop = errno = ENOENT; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + mem_res = talloc_zero(ctx, struct ldb_result); + if ( ! mem_res) { + errno = *errnop = ENOMEM; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + ret = _ldb_nss_group_request(&mem_res, + gr_res->msgs[0]->dn, + _ldb_nss_mem_attrs, + "member"); + + if (ret != NSS_STATUS_SUCCESS) { + *errnop = errno; + goto done; + } + + ret = _ldb_nss_fill_group(result_buf, + buffer, + buflen, + errnop, + gr_res->msgs[0], + mem_res); + + if (ret != NSS_STATUS_SUCCESS) { + goto done; + } + + ret = NSS_STATUS_SUCCESS; +done: + talloc_free(ctx); + return ret; +} + +NSS_STATUS _nss_ldb_initgroups_dyn(const char *user, gid_t group, long int *start, long int *size, gid_t **groups, long int limit, int *errnop) +{ + int ret; + char *filter; + const char * attrs[] = { "uidNumber", "gidNumber", NULL }; + struct ldb_result *uid_res; + struct ldb_result *mem_res; + + ret = _ldb_nss_init(); + if (ret != NSS_STATUS_SUCCESS) { + return ret; + } + + mem_res = talloc_zero(_ldb_nss_ctx, struct ldb_result); + if ( ! mem_res) { + errno = *errnop = ENOMEM; + return NSS_STATUS_UNAVAIL; + } + + /* build the filter for this name */ + filter = talloc_asprintf(mem_res, _LDB_NSS_PWNAM_FILTER, user); + if (filter == NULL) { + /* this is a fatal error */ + *errnop = errno = ENOENT; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + /* search the entry */ + ret = ldb_search(_ldb_nss_ctx->ldb, + _ldb_nss_ctx->ldb, + &uid_res, + _ldb_nss_ctx->base, + LDB_SCOPE_SUBTREE, + attrs, + filter); + if (ret != LDB_SUCCESS) { + /* this is a fatal error */ + *errnop = errno = ENOENT; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + talloc_steal(mem_res, uid_res); + + /* if none found return */ + if (uid_res->count == 0) { + *errnop = errno = ENOENT; + ret = NSS_STATUS_NOTFOUND; + goto done; + } + + if (uid_res->count != 1) { + /* this is a fatal error */ + *errnop = errno = ENOENT; + ret = NSS_STATUS_UNAVAIL; + goto done; + } + + ret = _ldb_nss_group_request(&mem_res, + uid_res->msgs[0]->dn, + attrs, + "memberOf"); + + if (ret != NSS_STATUS_SUCCESS) { + *errnop = errno; + goto done; + } + + ret = _ldb_nss_fill_initgr(group, + limit, + start, + size, + groups, + errnop, + mem_res); + + if (ret != NSS_STATUS_SUCCESS) { + goto done; + } + + ret = NSS_STATUS_SUCCESS; + +done: + talloc_free(mem_res); + return ret; +} |