mirror of https://github.com/odrling/Aegisub
75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
// Copyright (c) 2010, Amar Takhar <verm@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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/// @file access.cpp
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/// @brief Unix access methods.
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/// @ingroup libaegisub unix
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#include "libaegisub/access.h"
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#include "libaegisub/fs.h"
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#include <sys/stat.h>
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#include <errno.h>
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#include <unistd.h>
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#include <boost/filesystem/path.hpp>
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namespace agi {
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namespace acs {
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void Check(agi::fs::path const& file, acs::Type type) {
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struct stat file_stat;
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int file_status = stat(file.c_str(), &file_stat);
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if (file_status != 0) {
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switch (errno) {
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case ENOENT:
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throw fs::FileNotFound(file);
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case EACCES:
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throw fs::ReadDenied(file);
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case EIO:
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throw fs::FileSystemUnknownError("Fatal I/O error in 'stat' on path: " + file.string());
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}
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}
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switch (type) {
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case FileRead:
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case FileWrite:
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if ((file_stat.st_mode & S_IFREG) == 0)
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throw fs::NotAFile(file);
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break;
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case DirRead:
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case DirWrite:
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if ((file_stat.st_mode & S_IFDIR) == 0)
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throw fs::NotADirectory(file);
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break;
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}
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file_status = access(file.c_str(), R_OK);
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if (file_status != 0)
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throw fs::ReadDenied(file);
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if (type == DirWrite || type == FileWrite) {
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file_status = access(file.c_str(), W_OK);
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if (file_status != 0)
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throw fs::WriteDenied(file);
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}
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}
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} // namespace acs
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} // namespace agi
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