mirror of
https://github.com/ksherlock/mpw.git
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243 lines
6.1 KiB
C++
243 lines
6.1 KiB
C++
/*
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* Copyright (c) 2016, Kelvin W Sherlock
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* 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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "native_internal.h"
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#include <cstring>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "config.h"
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#define XATTR_FINDERINFO_NAME "com.apple.FinderInfo"
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#define XATTR_RESOURCEFORK_NAME "com.apple.ResourceFork"
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#define XATTR_FILETYPE_NAME "prodos.FileType"
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#define XATTR_AUXTYPE_NAME "prodos.AuxType"
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using namespace MacOS;
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namespace {
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uint32_t rforksize(const std::string &path_name)
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{
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int fd;
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uint32_t rv = 0;
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struct stat st;
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fd = attropen(path_name.c_str(), XATTR_RESOURCEFORK_NAME, O_RDONLY);
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if (fd >= 0) {
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if (fstat(fd, &st) == 0) rv = st.st_size;
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close(fd);
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}
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return rv;
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}
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}
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namespace native {
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macos_error get_finder_info(const std::string &path_name, void *info, bool extended) {
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uint8_t buffer[32];
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std::memset(buffer, 0, sizeof(buffer));
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int fd;
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fd = attropen(path_name.c_str(), XATTR_FINDERINFO_NAME, O_RDONLY);
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if (fd >= 0) {
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ssize_t x = read(fd, buffer, 32);
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close(fd);
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if (x == 32 || x == 16){
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prodos_ftype_out(buffer);
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memcpy(info, buffer, extended ? 32 : 16);
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return noErr;
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}
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}
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/* if it's a text file, call it a text file */
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if (is_text_file_internal(path_name)) {
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memcpy(buffer, "TEXTMPS ", 8);
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}
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memcpy(info, buffer, extended ? 32 : 16);
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return noErr;
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}
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macos_error set_finder_info(const std::string &path_name, const void *info, bool extended) {
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uint8_t buffer[32];
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ssize_t rv;
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std::memset(buffer, 0, sizeof(buffer));
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if (extended) {
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std::memcpy(buffer, info, 32);
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} else {
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std::memcpy(buffer, info, 16);
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}
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prodos_ftype_in(buffer);
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int fd = attropen(path_name.c_str(), XATTR_FINDERINFO_NAME, O_WRONLY | O_CREAT, 0666);
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if (fd < 0) return macos_error_from_errno();
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rv = write(fd, info, extended ? 32 : 16);
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close(fd);
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if ( rv < 0) return macos_error_from_errno();
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return noErr;
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}
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macos_error get_file_info(const std::string &path_name, file_info &fi)
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{
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struct stat st;
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if (stat(path_name.c_str(), &st) < 0)
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return macos_error_from_errno();
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fi.create_date = unix_to_mac(st.st_ctime);
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fi.modify_date = unix_to_mac(st.st_mtime);
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fi.backup_date = 0;
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if (S_ISDIR(st.st_mode)) {
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fi.type = file_info::directory;
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fi.attributes = 1 << 4;
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int links = st.st_nlink - 2;
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if (links < 0) links = 0;
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if (links > 65535) links = 65535;
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fi.entry_count = links;
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return noErr;
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}
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// todo -- get actual block size instead of assuming 512. oh well!
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fi.type = file_info::file;
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fi.data_logical_size = st.st_size;
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fi.data_physical_size = (st.st_size + 511) & ~511;
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fi.resource_physical_size = 0;
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fi.resource_logical_size = 0;
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get_finder_info(path_name, fi.finder_info);
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ssize_t rsize = rforksize(path_name);
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if (rsize > 0) {
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fi.resource_physical_size = rsize;
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fi.resource_logical_size = (rsize + 511) & ~511;
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}
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return noErr;
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}
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macos_error set_file_info(const std::string &path_name, const file_info &fi) {
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struct stat st;
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if (stat(path_name.c_str(), &st) < 0) return macos_error_from_errno();
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if (S_ISREG(st.st_mode)) {
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auto rv = set_finder_info(path_name, fi.finder_info);
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if (rv) return rv;
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}
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time_t create_date = fi.create_date ? mac_to_unix(fi.create_date) : 0;
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time_t modify_date = fi.modify_date ? mac_to_unix(fi.modify_date) : 0;
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time_t backup_date = fi.backup_date ? mac_to_unix(fi.backup_date) : 0;
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// todo -- value of 0 == set to current date/time?
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if (modify_date == st.st_mtime) modify_date = 0;
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// try utimes.
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struct timeval tv[2];
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memset(tv, 0, sizeof(tv));
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int rv = 0;
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if (modify_date) {
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tv[0].tv_sec = st.st_atime;
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tv[1].tv_sec = modify_date;
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rv = utimes(path_name.c_str(), tv);
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}
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if (rv < 0) return macos_error_from_errno();
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return noErr;
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}
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tool_return<file_ptr> open_resource_fork(const std::string &path_name, int oflag) {
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/* under HFS, every file has a resource fork.
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* Therefore, create it if opening for O_RDWR or O_WRONLY
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*/
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int parent;
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if (oflag & O_CREAT) {
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int excl = oflag & O_EXCL;
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parent = open(path_name.c_str(), O_RDONLY | O_CREAT | excl, 0666);
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} else {
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parent = open(path_name.c_str(), O_RDONLY);
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}
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if (parent < 0) return macos_error_from_errno();
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oflag &= ~(O_CREAT | O_EXCL);
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int mode = oflag & O_ACCMODE;
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if (mode == O_WRONLY || mode == O_RDWR) oflag |= O_CREAT;
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//int fd = attropen(path_name.c_str(), XATTR_RESOURCEFORK_NAME, oflag, 0666);
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int fd = openat(parent, XATTR_RESOURCEFORK_NAME, oflag | O_XATTR, 0666);
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if (fd < 0) {
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int e = macos_error_from_errno();
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close(parent);
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if (e == ENOENT && mode == O_RDONLY) {
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auto tmp = new empty_file(path_name);
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tmp->resource = true;
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return file_ptr(tmp);
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}
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return e;
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}
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close(parent);
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auto tmp = new fd_file(path_name, fd);
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tmp->resource = true;
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return file_ptr(tmp);
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}
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}
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