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/*!A cross-platform build utility based on Lua
*
* Licensed 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.
*
* Copyright (C) 2015-present, Xmake Open Source Community.
*
* @author ruki
* @file deplibs.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "deplibs_macho"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* private implementation
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_bool_t xm_binutils_macho_deplibs(tb_stream_ref_t istream, tb_hize_t base_offset, lua_State *lua) {
tb_assert_and_check_return_val(istream && lua, tb_false);
// init Mach-O context
xm_macho_context_t context;
if (!xm_binutils_macho_context_init(istream, base_offset, &context)) {
return tb_false;
}
// skip header to reach load commands
tb_size_t header_size = context.is64 ? sizeof(xm_macho_header_64_t) : sizeof(xm_macho_header_32_t);
if (!tb_stream_seek(istream, base_offset + header_size)) {
return tb_false;
}
lua_newtable(lua);
tb_size_t result_count = 0;
// iterate load commands
for (tb_uint32_t i = 0; i < context.ncmds; i++) {
xm_macho_load_command_t lc;
tb_hize_t current_cmd_offset = tb_stream_offset(istream);
if (!tb_stream_bread(istream, (tb_byte_t*)&lc, sizeof(lc))) {
return tb_false;
}
xm_binutils_macho_swap_load_command(&lc, context.swap);
// check for LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_REEXPORT_DYLIB, LC_ID_DYLIB
if (lc.cmd == XM_MACHO_LC_LOAD_DYLIB || lc.cmd == XM_MACHO_LC_ID_DYLIB ||
lc.cmd == XM_MACHO_LC_LOAD_WEAK_DYLIB || lc.cmd == XM_MACHO_LC_REEXPORT_DYLIB) {
xm_macho_dylib_command_t dc;
if (tb_stream_seek(istream, current_cmd_offset)) {
if (tb_stream_bread(istream, (tb_byte_t*)&dc, sizeof(dc))) {
xm_binutils_macho_swap_dylib_command(&dc, context.swap);
tb_uint32_t name_offset = dc.dylib.offset;
if (name_offset < lc.cmdsize) {
// name is at current_cmd_offset + name_offset
if (tb_stream_seek(istream, current_cmd_offset + name_offset)) {
tb_char_t dylib_path[1024];
tb_size_t max_len = lc.cmdsize - name_offset;
if (max_len > sizeof(dylib_path) - 1) max_len = sizeof(dylib_path) - 1;
tb_size_t pos = 0;
tb_byte_t c;
while (pos < max_len) {
if (!tb_stream_bread(istream, &c, 1)) break;
if (c == 0) break;
dylib_path[pos++] = (tb_char_t)c;
}
dylib_path[pos] = '\0';
if (pos > 0) {
lua_pushinteger(lua, result_count + 1);
lua_pushstring(lua, dylib_path);
lua_settable(lua, -3);
result_count++;
}
}
}
}
}
}
// move to next command
if (!tb_stream_seek(istream, current_cmd_offset + lc.cmdsize)) {
break;
}
}
return tb_true;
}
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