318 lines
6.7 KiB
C++
318 lines
6.7 KiB
C++
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
#include <stdexcept>
|
|
#include <algorithm>
|
|
#include <functional>
|
|
#include <system_error>
|
|
#include <utility>
|
|
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <err.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <dirent.h>
|
|
|
|
#include <arpa/inet.h>
|
|
|
|
#include <sysexits.h>
|
|
|
|
#include "applefile.h"
|
|
#include "mapped_file.h"
|
|
#include "defer.h"
|
|
|
|
|
|
std::vector<std::string> unlink_list;
|
|
|
|
|
|
bool _f = false;
|
|
bool _m = false;
|
|
bool _n = false;
|
|
bool _p = false;
|
|
bool _s = false;
|
|
bool _v = false;
|
|
|
|
int _rv = 0;
|
|
|
|
|
|
|
|
|
|
void throw_damaged_file() {
|
|
throw std::runtime_error("File is damaged.");
|
|
}
|
|
|
|
void throw_not_apple_double() {
|
|
throw std::runtime_error("Not an Apple Double File");
|
|
}
|
|
|
|
void throw_eof() {
|
|
throw std::runtime_error("Unexpected end of file.");
|
|
}
|
|
|
|
|
|
void throw_errno() {
|
|
throw std::system_error(errno, std::system_category());
|
|
}
|
|
|
|
|
|
void throw_errno(const std::string &what) {
|
|
throw std::system_error(errno, std::system_category(), what);
|
|
}
|
|
|
|
|
|
void one_file(const std::string &data, const std::string &rsrc) noexcept try {
|
|
|
|
struct stat rsrc_st;
|
|
|
|
if (_v) fprintf(stdout, "Merging %s & %s\n", rsrc.c_str(), data.c_str());
|
|
|
|
int fd = open(data.c_str(), O_RDONLY);
|
|
if (fd < 0) {
|
|
|
|
if (errno == ENOENT) {
|
|
if (_n) unlink_list.push_back(rsrc);
|
|
return;
|
|
}
|
|
throw_errno();
|
|
}
|
|
defer close_fd([fd]{close(fd); });
|
|
|
|
|
|
if (stat(rsrc.c_str(), &rsrc_st) < 0) throw_errno();
|
|
if (rsrc_st.st_size == 0) {
|
|
// mmapping a zero-length file throws EINVAL.
|
|
if (!_p) unlink_list.push_back(rsrc);
|
|
return;
|
|
}
|
|
|
|
mapped_file mf(rsrc, mapped_file::priv, rsrc_st.st_size);
|
|
|
|
|
|
if (mf.size() < sizeof(ASHeader)) throw_not_apple_double();
|
|
|
|
ASHeader *header = (ASHeader *)mf.data();
|
|
header->magicNum = ntohl(header->magicNum);
|
|
header->versionNum = ntohl(header->versionNum);
|
|
header->numEntries = ntohs(header->numEntries);
|
|
|
|
|
|
|
|
if (header->magicNum != APPLEDOUBLE_MAGIC)
|
|
throw_not_apple_double();
|
|
|
|
// v 2 is a super set of v1. v1 had type 7 for os-specific info, since split into
|
|
// separate entries.
|
|
if (header->versionNum != 0x00010000 && header->versionNum != 0x00020000)
|
|
throw_not_apple_double();
|
|
|
|
|
|
if (header->numEntries * sizeof(ASEntry) + sizeof(ASHeader) > mf.size()) throw_eof();
|
|
|
|
ASEntry *begin = (ASEntry *)(mf.data() + sizeof(ASHeader));
|
|
ASEntry *end = &begin[header->numEntries];
|
|
|
|
std::for_each(begin, end, [&mf](ASEntry &e){
|
|
e.entryID = ntohl(e.entryID);
|
|
e.entryOffset = ntohl(e.entryOffset);
|
|
e.entryLength = ntohl(e.entryLength);
|
|
|
|
// and check for truncation.
|
|
if (!e.entryLength) return;
|
|
if (e.entryOffset > mf.size()) throw_eof();
|
|
if (e.entryOffset + e.entryLength > mf.size()) throw_eof();
|
|
|
|
});
|
|
|
|
std::for_each(begin, end, [&mf,fd](ASEntry &e){
|
|
|
|
if (e.entryLength == 0) return;
|
|
switch(e.entryID) {
|
|
|
|
#if 0
|
|
/* should not exist for apple double! */
|
|
case AS_DATA: {
|
|
ssize_t ok = write(fd, mf.data() + e.entryOffset, e.entryLength);
|
|
if (ok < 0) throw_errno();
|
|
//if (ok != e.entryLength) return -1;
|
|
break;
|
|
}
|
|
#endif
|
|
case AS_RESOURCE: {
|
|
#ifdef __sun__
|
|
int rfd = openat(fd, "com.apple.ResourceFork", O_XATTR | O_CREAT | O_TRUNC | O_WRONLY, 0666);
|
|
if (rfd < 0) throw_errno("com.apple.ResourceFork");
|
|
defer close_fd([rfd](){ close(rfd); });
|
|
|
|
ssize_t ok = write(rfd, mf.data() + e.entryOffset, e.entryLength);
|
|
if (ok < 0) throw_errno("com.apple.ResourceFork");
|
|
//if (ok != e.entryLength) return -1;
|
|
#endif
|
|
break;
|
|
}
|
|
case AS_FINDERINFO: {
|
|
/* Apple now includes xattr w/ finder info */
|
|
if (e.entryLength < 32) {
|
|
fputs("Warning: Invalid Finder Info size.\n", stderr);
|
|
break;
|
|
}
|
|
#ifdef __sun__
|
|
int rfd = openat(fd, "com.apple.FinderInfo", O_XATTR | O_CREAT | O_TRUNC | O_WRONLY, 0666);
|
|
if (rfd < 0) throw_errno("com.apple.ResourceFork");
|
|
defer close_fd([rfd](){ close(rfd); });
|
|
|
|
ssize_t ok = write(rfd, mf.data() + e.entryOffset, 32);
|
|
if (ok < 0) throw_errno("com.apple.FinderInfo");
|
|
//if (ok != e.entryLength) return -1;
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
});
|
|
|
|
|
|
if (!_p) unlink_list.push_back(rsrc);
|
|
|
|
} catch (const std::exception &ex) {
|
|
_rv = 1;
|
|
fprintf(stderr, "Merging %s failed: %s\n", rsrc.c_str(), ex.what());
|
|
}
|
|
|
|
void unlink_files(std::vector<std::string> &unlink_list) {
|
|
|
|
for (const auto &path : unlink_list) {
|
|
if (_v) fprintf(stdout, "Deleting %s\n", path.c_str());
|
|
int ok = unlink(path.c_str());
|
|
if (ok < 0) warn("unlink %s", path.c_str());
|
|
}
|
|
unlink_list.clear();
|
|
}
|
|
|
|
void one_dir(std::string dir) noexcept {
|
|
|
|
DIR *dirp;
|
|
dirent *dp;
|
|
|
|
// check for .AppleDouble folder.
|
|
|
|
std::vector<std::string> dir_list;
|
|
|
|
if (dir.empty()) return;
|
|
|
|
while (!dir.empty() && dir.back() == '/') dir.pop_back();
|
|
dir.push_back('/');
|
|
|
|
std::string ad = dir + ".AppleDouble/";
|
|
|
|
dirp = opendir(ad.c_str());
|
|
if (dirp) {
|
|
while ( (dp = readdir(dirp)) ) {
|
|
|
|
if (dp->d_name[0] == '.') continue;
|
|
|
|
std::string name = dp->d_name;
|
|
|
|
one_file(dir + name, ad + name);
|
|
}
|
|
closedir(dirp);
|
|
|
|
unlink_files(unlink_list);
|
|
if (!_p) {
|
|
// try to delete it...
|
|
if (_v) fprintf(stdout, "Deleting %s\n", ad.c_str());
|
|
int ok = rmdir(ad.c_str());
|
|
if (ok < 0) warn("rmdir %s", ad.c_str());
|
|
}
|
|
}
|
|
|
|
|
|
dirp = opendir(dir.c_str());
|
|
if (dirp) {
|
|
while ( (dp = readdir(dirp)) ) {
|
|
|
|
std::string name = dp->d_name;
|
|
if (name.length() > 2 && name[0] == '.' && name[1] == '_') {
|
|
|
|
one_file(dir + name.substr(2), dir + name);
|
|
continue;
|
|
}
|
|
|
|
if (!_f && name[0] != '.') {
|
|
std::string tmp = dir + name;
|
|
#ifdef DT_DIR
|
|
if (dp->d_type == DT_DIR)
|
|
dir_list.push_back(tmp);
|
|
#else
|
|
struct stat st;
|
|
if (stat(tmp.c_str(), &st) == 0 && S_ISDIR(st.st_mode))
|
|
dir_list.push_back(tmp);
|
|
#endif
|
|
}
|
|
}
|
|
closedir(dirp);
|
|
} else {
|
|
warn("%s", dir.c_str());
|
|
}
|
|
|
|
unlink_files(unlink_list);
|
|
|
|
for (const auto &path : dir_list) one_dir(path);
|
|
|
|
}
|
|
|
|
void usage() {
|
|
fputs("Usage: dot_clean [-fhmnpsv] directory ...\n", stderr);
|
|
exit(EX_USAGE);
|
|
}
|
|
|
|
void help() {
|
|
fputs(
|
|
"Usage: dot_clean [-fhmnpsv] directory ...\n"
|
|
"\n"
|
|
" -f Disable recursion\n"
|
|
" -h Display help\n"
|
|
" -m Always delete apple double files\n"
|
|
" -n Deleted apple double files if there is no matching native file\n"
|
|
" -p Preserve apple double file.\n"
|
|
" -s Follow symbolic links.\n"
|
|
" -v Be verbose\n",
|
|
stdout);
|
|
|
|
exit(EX_OK);
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
|
|
int c;
|
|
|
|
while ((c = getopt(argc, argv, "fhmnpsv")) != -1) {
|
|
switch(c) {
|
|
case 'f': _f = true; break;
|
|
case 'h': help(); break;
|
|
case 'm': _m = true; break;
|
|
case 'n': _n = true; break;
|
|
case 'p': _p = true; break;
|
|
case 's': _s = true; break;
|
|
case 'v': _v = true; break;
|
|
case ':':
|
|
case '?':
|
|
default:
|
|
usage();
|
|
break;
|
|
}
|
|
}
|
|
|
|
argv += optind;
|
|
argc -= optind;
|
|
|
|
if (!argc) usage();
|
|
|
|
for (int i = 0; i < argc; ++i) one_dir(argv[i]);
|
|
|
|
return _rv;
|
|
}
|