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b401ef47 RC |
1 | /* |
2 | * Copyright (c) 2001, Robert Collins. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * A copy of the GNU General Public License can be found at | |
10 | * http://www.gnu.org/ | |
11 | * | |
12 | * Written by Robert Collins <rbtcollins@hotmail.com> | |
13 | * | |
14 | */ | |
15 | ||
16 | #if 0 | |
17 | static const char *cvsid = | |
18 | "\n%%% $Id$\n"; | |
19 | #endif | |
20 | ||
21 | #include "io_stream_rsync.h" | |
22 | #include "IOStreamProvider.h" | |
23 | #include "rsync/rsync.h" | |
24 | ||
25 | ||
26 | /* completely private iostream registration class */ | |
27 | class RSyncProvider : public IOStreamProvider | |
28 | { | |
29 | public: | |
30 | int exists (String const &path) const | |
31 | { | |
32 | return io_stream_rsync::exists(path); | |
33 | } | |
34 | int remove (String const &path) const | |
35 | { | |
36 | /* Not currently supported */ | |
37 | return 1; | |
38 | } | |
39 | int mklink (String const &a , String const &b, io_stream_link_t c) const | |
40 | { | |
41 | return io_stream_rsync::mklink(a,b,c); | |
42 | } | |
43 | io_stream *open (String const &a,String const &b) const | |
44 | { | |
45 | return new io_stream_rsync (a, b); | |
46 | } | |
47 | ~RSyncProvider (){} | |
48 | int move (String const &a,String const &b) const | |
49 | { | |
50 | /* Not supported yet */ | |
51 | return 0; | |
52 | } | |
53 | int mkdir_p (enum path_type_t isadir, String const &path) const | |
54 | { | |
55 | /* Not supported yet */ | |
56 | return 0; | |
57 | } | |
58 | protected: | |
59 | RSyncProvider() // no creating this | |
60 | { | |
61 | io_stream::registerProvider (theInstance, "rsync://"); | |
62 | } | |
63 | RSyncProvider(RSyncProvider const &); // no copying | |
64 | RSyncProvider &operator=(RSyncProvider const &); // no assignment | |
65 | private: | |
66 | static RSyncProvider theInstance; | |
67 | }; | |
68 | RSyncProvider RSyncProvider::theInstance = RSyncProvider(); | |
69 | ||
70 | io_stream_rsync::io_stream_rsync (String const &name, String const &mode): | |
71 | fp(), fname(name),lmode (mode) | |
72 | { | |
73 | errno = 0; | |
74 | if (!name.size() || !mode.size()) | |
75 | return; | |
76 | fp = fopen (name.cstr_oneuse(), mode.cstr_oneuse()); | |
77 | if (!fp) | |
78 | lasterr = errno; | |
79 | } | |
80 | ||
81 | io_stream_rsync::~io_stream_rsync () | |
82 | { | |
83 | if (fp) | |
84 | fclose (fp); | |
85 | destroyed = 1; | |
86 | } | |
87 | ||
88 | int | |
89 | io_stream_rsync::exists (String const &path) | |
90 | { | |
91 | #if defined(WIN32) && !defined (_CYGWIN_) | |
92 | if (_access (path.cstr_oneuse(), 0) == 0) | |
93 | #else | |
94 | if (access (path.cstr_oneuse(), F_OK) == 0) | |
95 | #endif | |
96 | return 1; | |
97 | return 0; | |
98 | } | |
99 | ||
100 | int | |
101 | io_stream_rsync::remove (String const &path) | |
102 | { | |
103 | if (!path.size()) | |
104 | return 1; | |
105 | #if defined(WIN32) && !defined (_CYGWIN_) | |
106 | unsigned long w = GetFileAttributes (path.cstr_oneuse()); | |
107 | if (w != 0xffffffff && w & FILE_ATTRIBUTE_DIRECTORY) | |
108 | { | |
109 | char *tmp = new char [path.size() + 10]; | |
110 | int i = 0; | |
111 | do | |
112 | { | |
113 | i++; | |
114 | sprintf (tmp, "%s.old-%d", path.cstr_oneuse(), i); | |
115 | } | |
116 | while (GetFileAttributes (tmp) != 0xffffffff); | |
117 | fprintf (stderr, "warning: moving directory \"%s\" out of the way.\n", | |
118 | path.cstr_oneuse()); | |
119 | MoveFile (path.cstr_oneuse(), tmp); | |
120 | delete[] tmp; | |
121 | } | |
122 | return !DeleteFileA (path.cstr_oneuse()); | |
123 | #else | |
124 | // FIXME: try rmdir if unlink fails - remove the dir | |
125 | return unlink (path.cstr_oneuse()); | |
126 | #endif | |
127 | } | |
128 | ||
129 | int | |
130 | io_stream_rsync::mklink (String const &from, String const &to, | |
131 | io_stream_link_t linktype) | |
132 | { | |
133 | if (!from.size() || !to.size()) | |
134 | return 1; | |
135 | #if defined(WIN32) && !defined (_CYGWIN_) | |
136 | switch (linktype) | |
137 | { | |
138 | case IO_STREAM_SYMLINK: | |
139 | return mkcygsymlink (from.cstr_oneuse(), to.cstr_oneuse()); | |
140 | case IO_STREAM_HARDLINK: | |
141 | return 1; | |
142 | } | |
143 | #else | |
144 | switch (linktype) | |
145 | { | |
146 | case IO_STREAM_SYMLINK: | |
147 | return symlink (to.cstr_oneuse(), from.cstr_oneuse()); | |
148 | case IO_STREAM_HARDLINK: | |
149 | return link (to.cstr_oneuse(), from.cstr_oneuse()); | |
150 | } | |
151 | #endif | |
152 | return 1; | |
153 | } | |
154 | ||
155 | /* virtuals */ | |
156 | ||
157 | ||
158 | ssize_t | |
159 | io_stream_rsync::read (void *buffer, size_t len) | |
160 | { | |
161 | if (fp) | |
162 | return fread (buffer, 1, len, fp); | |
163 | return 0; | |
164 | } | |
165 | ||
166 | ssize_t | |
167 | io_stream_rsync::write (const void *buffer, size_t len) | |
168 | { | |
169 | if (fp) | |
170 | return fwrite (buffer, 1, len, fp); | |
171 | return 0; | |
172 | } | |
173 | ||
174 | ssize_t | |
175 | io_stream_rsync::peek (void *buffer, size_t len) | |
176 | { | |
177 | if (fp) | |
178 | { | |
179 | int pos = ftell (fp); | |
180 | ssize_t rv = fread (buffer, 1, len, fp); | |
181 | fseek (fp, pos, SEEK_SET); | |
182 | return rv; | |
183 | } | |
184 | return 0; | |
185 | } | |
186 | ||
187 | long | |
188 | io_stream_rsync::tell () | |
189 | { | |
190 | if (fp) | |
191 | { | |
192 | return ftell (fp); | |
193 | } | |
194 | return 0; | |
195 | } | |
196 | ||
197 | int | |
198 | io_stream_rsync::seek (long where, io_stream_seek_t whence) | |
199 | { | |
200 | if (fp) | |
201 | { | |
202 | return fseek (fp, where, (int) whence); | |
203 | } | |
204 | lasterr = EBADF; | |
205 | return -1; | |
206 | } | |
207 | ||
208 | int | |
209 | io_stream_rsync::error () | |
210 | { | |
211 | if (fp) | |
212 | return ferror (fp); | |
213 | return lasterr; | |
214 | } | |
215 | ||
216 | int | |
217 | io_stream_rsync::set_mtime (int mtime) | |
218 | { | |
219 | if (!fname.size()) | |
220 | return 1; | |
221 | if (fp) | |
222 | fclose (fp); | |
223 | #if defined(WIN32) && !defined (_CYGWIN_) | |
224 | long long ftimev = mtime * NSPERSEC + FACTOR; | |
225 | FILETIME ftime; | |
226 | ftime.dwHighDateTime = ftimev >> 32; | |
227 | ftime.dwLowDateTime = ftimev; | |
228 | HANDLE h = | |
229 | CreateFileA (fname.cstr_oneuse(), GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
230 | 0, OPEN_EXISTING, | |
231 | FILE_ATTRIBUTE_NORMAL | FILE_FLAG_BACKUP_SEMANTICS, 0); | |
232 | if (h) | |
233 | { | |
234 | SetFileTime (h, 0, 0, &ftime); | |
235 | CloseHandle (h); | |
236 | return 0; | |
237 | } | |
238 | #else | |
239 | throw new runtime_error ("set_mtime not supported on posix yet."); | |
240 | #endif | |
241 | return 1; | |
242 | } | |
243 | ||
244 | int | |
245 | io_stream_rsync::move (String const &from, String const &to) | |
246 | { | |
247 | if (!from.size()|| !to.size()) | |
248 | return 1; | |
249 | return rename (from.cstr_oneuse(), to.cstr_oneuse()); | |
250 | } | |
251 | ||
252 | size_t | |
253 | io_stream_rsync::get_size () | |
254 | { | |
255 | if (!fname.size()) | |
256 | return 0; | |
257 | #if defined(WIN32) && !defined (_CYGWIN_) | |
258 | HANDLE h; | |
259 | WIN32_FIND_DATA buf; | |
260 | DWORD ret = 0; | |
261 | ||
262 | h = FindFirstFileA (fname.cstr_oneuse(), &buf); | |
263 | if (h != INVALID_HANDLE_VALUE) | |
264 | { | |
265 | if (buf.nFileSizeHigh == 0) | |
266 | ret = buf.nFileSizeLow; | |
267 | FindClose (h); | |
268 | } | |
269 | return ret; | |
270 | #else | |
271 | struct stat buf; | |
272 | if (stat(fname.cstr_oneuse(), &buf)) | |
273 | throw new runtime_error ("Failed to stat file - has it been deleted?"); | |
274 | return buf.st_size; | |
275 | #endif | |
276 | } |