| // Copyright (C) 2010 David Sugar, Tycho Softworks. |
| // |
| // This file is part of GNU uCommon C++. |
| // |
| // GNU uCommon C++ is free software: you can redistribute it and/or modify |
| // it under the terms of the GNU Lesser General Public License as published |
| // by the Free Software Foundation, either version 3 of the License, or |
| // (at your option) any later version. |
| // |
| // GNU uCommon C++ is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU Lesser General Public License for more details. |
| // |
| // You should have received a copy of the GNU Lesser General Public License |
| // along with GNU uCommon C++. If not, see <http://www.gnu.org/licenses/>. |
| |
| #include <ucommon/secure.h> |
| #include <sys/stat.h> |
| |
| using namespace UCOMMON_NAMESPACE; |
| |
| static shell::flagopt helpflag('h',"--help", _TEXT("display this list")); |
| static shell::flagopt althelp('?', NULL, NULL); |
| static shell::stringopt hash('d', "--digest", _TEXT("digest method (md5)"), "method", "md5"); |
| static shell::flagopt recursive('R', "--recursive", _TEXT("recursive directory scan")); |
| static shell::flagopt altrecursive('r', NULL, NULL); |
| static shell::flagopt hidden('s', "--hidden", _TEXT("show hidden files")); |
| |
| static int exit_code = 0; |
| static const char *argv0 = "md"; |
| static digest_t md; |
| |
| static void result(const char *path, int code) |
| { |
| const char *err = _TEXT("i/o error"); |
| |
| switch(code) { |
| case EACCES: |
| case EPERM: |
| err = _TEXT("permission denied"); |
| break; |
| case EROFS: |
| err = _TEXT("read-only file system"); |
| break; |
| case ENODEV: |
| case ENOENT: |
| err = _TEXT("no such file or directory"); |
| break; |
| case ENOTDIR: |
| err = _TEXT("not a directory"); |
| break; |
| case ENOTEMPTY: |
| err = _TEXT("directory not empty"); |
| break; |
| case ENOSPC: |
| err = _TEXT("no space left on device"); |
| break; |
| case EBADF: |
| case ENAMETOOLONG: |
| err = _TEXT("bad file path"); |
| break; |
| case EBUSY: |
| case EINPROGRESS: |
| err = _TEXT("file or directory busy"); |
| break; |
| case EINTR: |
| err = _TEXT("operation interupted"); |
| break; |
| case EISDIR: |
| err = _TEXT("is a directory"); |
| break; |
| #ifdef ELOOP |
| case ELOOP: |
| err = _TEXT("too many sym links"); |
| break; |
| #endif |
| } |
| |
| if(!code) { |
| if(!path) |
| path="-"; |
| shell::printf("%s %s\n", *md, path); |
| return; |
| } |
| |
| if(path) |
| shell::printf("%s: %s: %s\n", argv0, path, err); |
| else |
| shell::errexit(1, "*** %s: %s\n", argv0, err); |
| |
| exit_code = 1; |
| } |
| |
| static void digest(const char *path = NULL) |
| { |
| fsys_t fs; |
| fsys::fileinfo_t ino; |
| unsigned char buffer[1024]; |
| |
| if(path) { |
| int err = fsys::info(path, &ino); |
| |
| if(err) { |
| result(path, err); |
| return; |
| } |
| |
| if(fsys::is_sys(&ino)) { |
| result(path, EBADF); |
| return; |
| } |
| |
| fs.open(path, fsys::STREAM); |
| } |
| else |
| fs.assign(shell::input()); |
| |
| if(!is(fs)) { |
| result(path, fs.err()); |
| return; |
| } |
| |
| for(;;) { |
| ssize_t size = fs.read(buffer, sizeof(buffer)); |
| if(size < 1) |
| break; |
| md.put(buffer, size); |
| } |
| |
| fs.close(); |
| result(path, fs.err()); |
| md.reset(); |
| } |
| |
| static void scan(String path, bool top = true) |
| { |
| char filename[128]; |
| string_t filepath; |
| dir_t dir(path); |
| |
| while(is(dir) && dir.read(filename, sizeof(filename))) { |
| if(*filename == '.' && (filename[1] == '.' || !filename[1])) |
| continue; |
| |
| if(*filename == '.' && !is(hidden)) |
| continue; |
| |
| filepath = str(path) + str("/") + str(filename); |
| if(fsys::is_dir(filepath)) { |
| if(is(recursive) || is(altrecursive)) |
| scan(filepath, false); |
| else |
| result(filepath, EISDIR); |
| } |
| else |
| digest(filepath); |
| } |
| } |
| |
| PROGRAM_MAIN(argc, argv) |
| { |
| shell::bind("mdsum"); |
| shell args(argc, argv); |
| argv0 = args.argv0(); |
| unsigned count = 0; |
| |
| argv0 = args.argv0(); |
| |
| if(is(helpflag) || is(althelp)) { |
| printf("%s\n", _TEXT("Usage: mdsum [options] path...")); |
| printf("%s\n\n", _TEXT("Compute digests for files")); |
| printf("%s\n", _TEXT("Options:")); |
| shell::help(); |
| printf("\n%s\n", _TEXT("Report bugs to dyfet@gnu.org")); |
| PROGRAM_EXIT(0); |
| } |
| |
| secure::init(); |
| if(!Digest::has(*hash)) |
| shell::errexit(2, "*** %s: %s: %s\n", |
| argv0, *hash, _TEXT("unkown or unsupported digest method")); |
| |
| md = *hash; |
| |
| // we can symlink md as md5, etc, to set alternate default digest names |
| if(!is(hash) && Digest::has(argv0)) |
| md = argv0; |
| |
| if(!args()) |
| digest(); |
| else while(count < args()) { |
| if(fsys::is_dir(args[count])) |
| scan(str(args[count++])); |
| else |
| digest(args[count++]); |
| } |
| |
| PROGRAM_EXIT(exit_code); |
| } |
| |