| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "apr_strings.h" |
| #define APR_WANT_MEMFUNC |
| #define APR_WANT_STRFUNC |
| #include "apr_want.h" |
| |
| #include "apu.h" |
| #include "apr_private.h" |
| |
| #if APU_HAVE_SDBM |
| |
| #include "apr_dbm_private.h" |
| #include "apr_sdbm.h" |
| |
| #define APR_DBM_DBMODE_RO (APR_FOPEN_READ | APR_FOPEN_BUFFERED) |
| #define APR_DBM_DBMODE_RW (APR_FOPEN_READ | APR_FOPEN_WRITE) |
| #define APR_DBM_DBMODE_RWCREATE (APR_FOPEN_READ | APR_FOPEN_WRITE | APR_FOPEN_CREATE) |
| #define APR_DBM_DBMODE_RWTRUNC (APR_FOPEN_READ | APR_FOPEN_WRITE | APR_FOPEN_CREATE | \ |
| APR_FOPEN_TRUNCATE) |
| |
| static apr_status_t set_error(apr_dbm_t *dbm, apr_status_t dbm_said) |
| { |
| dbm->errcode = dbm_said; |
| |
| if (dbm_said != APR_SUCCESS) { |
| dbm->errmsg = apr_psprintf(dbm->pool, "%pm", &dbm_said); |
| } else { |
| dbm->errmsg = NULL; |
| } |
| |
| return dbm_said; |
| } |
| |
| /* -------------------------------------------------------------------------- |
| ** |
| ** DEFINE THE VTABLE FUNCTIONS FOR SDBM |
| */ |
| |
| static apr_status_t vt_sdbm_open(apr_dbm_t **pdb, const char *pathname, |
| apr_int32_t mode, apr_fileperms_t perm, |
| apr_pool_t *pool) |
| { |
| apr_sdbm_t *file; |
| int dbmode; |
| |
| *pdb = NULL; |
| |
| switch (mode) { |
| case APR_DBM_READONLY: |
| dbmode = APR_DBM_DBMODE_RO; |
| break; |
| case APR_DBM_READWRITE: |
| dbmode = APR_DBM_DBMODE_RW; |
| break; |
| case APR_DBM_RWCREATE: |
| dbmode = APR_DBM_DBMODE_RWCREATE; |
| break; |
| case APR_DBM_RWTRUNC: |
| dbmode = APR_DBM_DBMODE_RWTRUNC; |
| break; |
| default: |
| return APR_EINVAL; |
| } |
| |
| { |
| apr_status_t rv; |
| |
| rv = apr_sdbm_open(&file, pathname, dbmode, perm, pool); |
| if (rv != APR_SUCCESS) |
| return rv; |
| } |
| |
| /* we have an open database... return it */ |
| *pdb = apr_pcalloc(pool, sizeof(**pdb)); |
| (*pdb)->pool = pool; |
| (*pdb)->type = &apr_dbm_type_sdbm; |
| (*pdb)->file = file; |
| |
| /* ### register a cleanup to close the DBM? */ |
| |
| return APR_SUCCESS; |
| } |
| |
| static void vt_sdbm_close(apr_dbm_t *dbm) |
| { |
| apr_sdbm_close(dbm->file); |
| } |
| |
| static apr_status_t vt_sdbm_fetch(apr_dbm_t *dbm, apr_datum_t key, |
| apr_datum_t *pvalue) |
| { |
| apr_status_t rv; |
| apr_sdbm_datum_t kd, rd; |
| |
| kd.dptr = key.dptr; |
| kd.dsize = (int)key.dsize; |
| |
| rv = apr_sdbm_fetch(dbm->file, &rd, kd); |
| |
| pvalue->dptr = rd.dptr; |
| pvalue->dsize = rd.dsize; |
| |
| /* store the error info into DBM, and return a status code. Also, note |
| that *pvalue should have been cleared on error. */ |
| return set_error(dbm, rv); |
| } |
| |
| static apr_status_t vt_sdbm_store(apr_dbm_t *dbm, apr_datum_t key, |
| apr_datum_t value) |
| { |
| apr_status_t rv; |
| apr_sdbm_datum_t kd, vd; |
| |
| kd.dptr = key.dptr; |
| kd.dsize = (int)key.dsize; |
| |
| vd.dptr = value.dptr; |
| vd.dsize = (int)value.dsize; |
| |
| rv = apr_sdbm_store(dbm->file, kd, vd, APR_SDBM_REPLACE); |
| |
| /* store any error info into DBM, and return a status code. */ |
| return set_error(dbm, rv); |
| } |
| |
| static apr_status_t vt_sdbm_del(apr_dbm_t *dbm, apr_datum_t key) |
| { |
| apr_status_t rv; |
| apr_sdbm_datum_t kd; |
| |
| kd.dptr = key.dptr; |
| kd.dsize = (int)key.dsize; |
| |
| rv = apr_sdbm_delete(dbm->file, kd); |
| |
| /* store any error info into DBM, and return a status code. */ |
| return set_error(dbm, rv); |
| } |
| |
| static int vt_sdbm_exists(apr_dbm_t *dbm, apr_datum_t key) |
| { |
| int exists; |
| apr_sdbm_datum_t vd, kd; |
| |
| kd.dptr = key.dptr; |
| kd.dsize = (int)key.dsize; |
| |
| if (apr_sdbm_fetch(dbm->file, &vd, kd) != APR_SUCCESS) |
| exists = 0; |
| else |
| exists = vd.dptr != NULL; |
| |
| return exists; |
| } |
| |
| static apr_status_t vt_sdbm_firstkey(apr_dbm_t *dbm, apr_datum_t *pkey) |
| { |
| apr_status_t rv; |
| apr_sdbm_datum_t rd; |
| |
| rv = apr_sdbm_firstkey(dbm->file, &rd); |
| |
| pkey->dptr = rd.dptr; |
| pkey->dsize = rd.dsize; |
| |
| /* store any error info into DBM, and return a status code. */ |
| return set_error(dbm, rv); |
| } |
| |
| static apr_status_t vt_sdbm_nextkey(apr_dbm_t *dbm, apr_datum_t *pkey) |
| { |
| apr_sdbm_datum_t rd; |
| |
| (void)apr_sdbm_nextkey(dbm->file, &rd); |
| |
| pkey->dptr = rd.dptr; |
| pkey->dsize = rd.dsize; |
| |
| /* |
| * XXX: This discards any error but apr_sdbm_nextkey currently returns |
| * XXX: an error for the last key |
| */ |
| return set_error(dbm, APR_SUCCESS); |
| } |
| |
| static void vt_sdbm_freedatum(apr_dbm_t *dbm, apr_datum_t data) |
| { |
| } |
| |
| static void vt_sdbm_usednames(apr_pool_t *pool, const char *pathname, |
| const char **used1, const char **used2) |
| { |
| *used1 = apr_pstrcat(pool, pathname, APR_SDBM_DIRFEXT, NULL); |
| *used2 = apr_pstrcat(pool, pathname, APR_SDBM_PAGFEXT, NULL); |
| } |
| |
| APR_MODULE_DECLARE_DATA const apr_dbm_type_t apr_dbm_type_sdbm = { |
| "sdbm", |
| vt_sdbm_open, |
| vt_sdbm_close, |
| vt_sdbm_fetch, |
| vt_sdbm_store, |
| vt_sdbm_del, |
| vt_sdbm_exists, |
| vt_sdbm_firstkey, |
| vt_sdbm_nextkey, |
| vt_sdbm_freedatum, |
| vt_sdbm_usednames |
| }; |
| |
| #endif /* APU_HAVE_SDBM */ |