mirror of
https://gitea.wildfiregames.com/0ad/0ad
synced 2026-06-16 05:13:58 -07:00
77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "lib/wchar.h"
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#include "lib/sysdep/sysdep.h"
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#include "lib/external_libraries/boost_filesystem.h"
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#define GNU_SOURCE
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#include "mocks/dlfcn.h"
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#include "mocks/unistd.h"
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LibError sys_get_executable_name(fs::wpath& pathname)
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{
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const char* path;
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Dl_info dl_info;
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// Find the executable's filename
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memset(&dl_info, 0, sizeof(dl_info));
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if (!T::dladdr((void *)sys_get_executable_name, &dl_info) ||
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!dl_info.dli_fname )
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{
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return ERR::NO_SYS;
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}
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path = dl_info.dli_fname;
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// If this looks like an absolute path, use realpath to get the normalized
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// path (with no '.' or '..')
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if (path[0] == '/')
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{
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char resolvedBuf[PATH_MAX];
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char* resolved = realpath(path, resolvedBuf);
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if (!resolved)
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return ERR::FAIL;
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pathname = wstring_from_utf8(resolved);
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return INFO::OK;
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}
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// If this looks like a relative path, resolve against cwd and use realpath
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if (strchr(path, '/'))
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{
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char cwd[PATH_MAX];
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if (!T::getcwd(cwd, PATH_MAX))
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return ERR::NO_SYS;
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char absolute[PATH_MAX];
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int ret = snprintf(absolute, PATH_MAX, "%s/%s", cwd, path);
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if (ret < 0 || ret >= PATH_MAX)
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return ERR::NO_SYS; // path too long, or other error
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char resolvedBuf[PATH_MAX];
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char* resolved = realpath(absolute, resolvedBuf);
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if (!resolved)
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return ERR::NO_SYS;
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pathname = wstring_from_utf8(resolved);
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return INFO::OK;
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}
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// If it's not a path at all, i.e. it's just a filename, we'd
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// probably have to search through PATH to find it.
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// That's complex and should be uncommon, so don't bother.
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return ERR::NO_SYS;
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}
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