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/*
* Copyright (C) 2016 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "private/icu.h"
#include <dirent.h>
#include <dlfcn.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <async_safe/log.h>
static void* g_libicuuc_handle = nullptr;
static bool __find_icu() {
g_libicuuc_handle = dlopen("libandroidicu.so", RTLD_LOCAL);
if (g_libicuuc_handle == nullptr) {
async_safe_format_log(ANDROID_LOG_ERROR, "bionic-icu", "couldn't open libandroidicu.so: %s",
dlerror());
return false;
}
return true;
}
void* __find_icu_symbol(const char* symbol_name) {
static bool found_icu = __find_icu();
if (!found_icu) return nullptr;
char versioned_symbol_name[strlen(symbol_name) + strlen("_android") + 1];
snprintf(versioned_symbol_name, sizeof(versioned_symbol_name), "%s_android",
symbol_name);
void* symbol = dlsym(g_libicuuc_handle, versioned_symbol_name);
if (symbol == nullptr) {
async_safe_format_log(ANDROID_LOG_ERROR, "bionic-icu", "couldn't find %s",
versioned_symbol_name);
}
return symbol;
}
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