forked from Mirrors/freeswitch
245060e5a9
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3738 d0543943-73ff-0310-b7d9-9358b9ac24b2
243 lines
6.7 KiB
C
243 lines
6.7 KiB
C
/*-
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* Copyright (c) 2000, Boris Popov. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Boris Popov
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* and its contributors.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#define ICONV_INTERNAL
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#include "iconv.h"
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#include "apr_file_io.h"
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#include "apr_file_info.h"
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#include "apr_pools.h"
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#include "apr_dso.h"
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#include "apr_env.h"
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#include "apr_strings.h"
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#include "apr_tables.h"
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#include "apr_lib.h"
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#include "api_version.h"
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef API_USE_BUILTIN_ALIASES
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#include "charset_alias.h"
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#endif
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#define APR_ICONV_PATH "APR_ICONV" API_STRINGIFY(API_MAJOR_VERSION) "_PATH"
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static apr_status_t
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iconv_getpathname(char *buffer, const char *dir, const char *name, apr_pool_t *ctx)
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{
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apr_status_t rv;
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apr_finfo_t sb;
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apr_snprintf(buffer, APR_PATH_MAX, "%s/%s.so", dir, name);
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rv = apr_stat(&sb, buffer, APR_FINFO_TYPE, ctx);
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#ifdef API_HAVE_CHARSET_ALIAS_TABLE
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/* If we didn't find the file, try again after looking in
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the charset alias mapping table. */
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if (rv || sb.filetype != APR_REG) {
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const char *alias = charset_alias_find(name);
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if (alias) {
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apr_snprintf(buffer, APR_PATH_MAX, "%s/%s.so", dir, alias);
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rv = apr_stat(&sb, buffer, APR_FINFO_TYPE, ctx);
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}
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}
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#endif /* API_HAVE_CHARSET_ALIAS_TABLE */
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if (!rv && sb.filetype != APR_REG)
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rv = APR_EINVAL;
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return rv;
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}
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static apr_status_t
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iconv_getpath(char *buf, const char *name, apr_pool_t *ctx)
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{
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char buffer[APR_PATH_MAX];
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apr_array_header_t *pathelts;
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apr_pool_t *subpool;
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apr_status_t status;
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char *ptr;
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status = apr_pool_create(&subpool, ctx);
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if (status)
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return status;
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if (apr_tolower(name[0]) == 'x' && name[1] == '-')
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name += 2;
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ptr = buffer;
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while (0 != (*ptr++ = apr_tolower(*name++)))
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;
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/* Fall back on APR_ICONV_PATH if APR_ICONVn_PATH isn't set...
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* TODO: Drop support for "APR_ICONV_PATH" in apr-iconv 2.0
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*/
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if ((!apr_env_get(&ptr, APR_ICONV_PATH, subpool)
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|| (!apr_env_get(&ptr, "APR_ICONV_PATH", subpool)))
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&& !apr_filepath_list_split(&pathelts, ptr, subpool))
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{
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int i;
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char **elts = (char **)pathelts->elts;
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for (i = 0; i < pathelts->nelts; ++i)
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{
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if (iconv_getpathname(buf, elts[i], buffer, subpool) == 0)
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{
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apr_pool_destroy(subpool);
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return APR_SUCCESS;
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}
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}
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}
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status = iconv_getpathname(buf, ICONV_DEFAULT_PATH, buffer, subpool);
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apr_pool_destroy(subpool);
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return status;
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}
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static int
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iconv_dlopen(const char *name, const char *symbol, void **hpp, void **dpp, apr_pool_t *ctx)
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{
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apr_dso_handle_t *handle;
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void *data;
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/* dlopen */
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if (apr_dso_load(&handle, name, ctx) != APR_SUCCESS) {
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return EINVAL;
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}
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/* dlsym */
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if ( apr_dso_sym(&data, handle, symbol) == APR_SUCCESS) {
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*hpp = handle;
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*dpp = data;
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return 0;
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}
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apr_dso_unload(handle);
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return EINVAL;
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}
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API_DECLARE_NONSTD(int)
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apr_iconv_mod_load(const char *modname, int modtype, const void *args,
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struct iconv_module **modpp, apr_pool_t *ctx)
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{
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struct iconv_module_desc *mdesc;
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struct iconv_module *mod, *depmod;
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const struct iconv_module_depend *depend;
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char buffer[APR_PATH_MAX];
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void *handle;
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int error;
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if (iconv_getpath(buffer, modname, ctx) != 0)
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return EINVAL;
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error = iconv_dlopen(buffer, "iconv_module", &handle, (void**)&mdesc, ctx);
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if (error)
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return error;
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if (modtype != ICMOD_ANY && mdesc->imd_type != modtype) {
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apr_dso_unload(handle);
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return APR_EFTYPE;
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}
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mod = malloc(sizeof(*mod));
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if (mod == NULL) {
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apr_dso_unload(handle);
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return ENOMEM;
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}
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memset(mod, 0, sizeof(*mod));
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mod->im_handle = handle;
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mod->im_desc = mdesc;
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mod->im_args = args;
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depend = mdesc->imd_depend;
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if (depend) {
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while (depend->md_name) {
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error = apr_iconv_mod_load(depend->md_name,
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depend->md_type, NULL, &depmod, ctx);
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if (error)
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goto bad;
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depmod->im_depdata = depend->md_data;
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depmod->im_next = mod->im_deplist;
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mod->im_deplist = depmod;
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depend++;
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}
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}
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error = ICONV_MOD_DYN_LOAD(mod,ctx);
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if (error)
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goto bad;
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depmod = mod->im_deplist;
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while (depmod) {
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mod->im_depcnt++;
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depmod = depmod->im_next;
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}
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error = ICONV_MOD_LOAD(mod,ctx);
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if (error)
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goto bad;
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mod->im_flags |= ICMODF_LOADED;
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*modpp = mod;
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return 0;
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bad:
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apr_iconv_mod_unload(mod,ctx);
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return error;
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}
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API_DECLARE_NONSTD(int)
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apr_iconv_mod_unload(struct iconv_module *mod, apr_pool_t *ctx)
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{
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struct iconv_module *deplist, *tmp;
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int error = 0;
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if (mod == NULL)
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return -1;
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if (mod->im_flags & ICMODF_LOADED)
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error = ICONV_MOD_UNLOAD(mod,ctx);
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error = ICONV_MOD_DYN_UNLOAD(mod,ctx);
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deplist = mod->im_deplist;
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while (deplist) {
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tmp = deplist->im_next;
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apr_iconv_mod_unload(deplist,ctx);
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deplist = tmp;
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}
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if (mod->im_handle != NULL)
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if (apr_dso_unload(mod->im_handle) != APR_SUCCESS)
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error = APR_EINVAL;
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free(mod);
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return error;
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}
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API_DECLARE_NONSTD(int)
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apr_iconv_mod_noevent(struct iconv_module *mod, int event, apr_pool_t *ctx)
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{
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switch (event) {
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case ICMODEV_LOAD:
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case ICMODEV_UNLOAD:
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case ICMODEV_DYN_LOAD:
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case ICMODEV_DYN_UNLOAD:
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break;
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default:
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return APR_EINVAL;
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}
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return 0;
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}
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