1 /*
2 +----------------------------------------------------------------------+
3 | Copyright (c) The PHP Group |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.01 of the PHP license, |
6 | that is bundled with this package in the file LICENSE, and is |
7 | available through the world-wide-web at the following url: |
8 | https://www.php.net/license/3_01.txt |
9 | If you did not receive a copy of the PHP license and are unable to |
10 | obtain it through the world-wide-web, please send a note to |
11 | license@php.net so we can mail you a copy immediately. |
12 +----------------------------------------------------------------------+
13 | Author: Piere-Alain Joye <pierre@php.net> |
14 +----------------------------------------------------------------------+
15 */
16
17 #ifdef HAVE_CONFIG_H
18 # include "config.h"
19 #endif
20 #include "php.h"
21 #ifdef HAVE_ZIP
22
23 #include "php_streams.h"
24 #include "ext/standard/file.h"
25 #include "ext/standard/php_string.h"
26 #include "fopen_wrappers.h"
27 #include "php_zip.h"
28
29 #include "ext/standard/url.h"
30
31 /* needed for ssize_t definition */
32 #include <sys/types.h>
33
34 struct php_zip_stream_data_t {
35 struct zip *za;
36 struct zip_file *zf;
37 size_t cursor;
38 php_stream *stream;
39 };
40
41 #define STREAM_DATA_FROM_STREAM() \
42 struct php_zip_stream_data_t *self = (struct php_zip_stream_data_t *) stream->abstract;
43
44
45 /* {{{ php_zip_ops_read */
php_zip_ops_read(php_stream * stream,char * buf,size_t count)46 static ssize_t php_zip_ops_read(php_stream *stream, char *buf, size_t count)
47 {
48 ssize_t n = 0;
49 STREAM_DATA_FROM_STREAM();
50
51 if (self->zf) {
52 n = zip_fread(self->zf, buf, count);
53 if (n < 0) {
54 #if LIBZIP_VERSION_MAJOR < 1
55 int ze, se;
56 zip_file_error_get(self->zf, &ze, &se);
57 stream->eof = 1;
58 php_error_docref(NULL, E_WARNING, "Zip stream error: %s", zip_file_strerror(self->zf));
59 #else
60 zip_error_t *err;
61 err = zip_file_get_error(self->zf);
62 stream->eof = 1;
63 php_error_docref(NULL, E_WARNING, "Zip stream error: %s", zip_error_strerror(err));
64 zip_error_fini(err);
65 #endif
66 return -1;
67 }
68 /* cast count to signed value to avoid possibly negative n
69 * being cast to unsigned value */
70 if (n == 0 || n < (ssize_t)count) {
71 stream->eof = 1;
72 } else {
73 self->cursor += n;
74 }
75 }
76 return n;
77 }
78 /* }}} */
79
80 /* {{{ php_zip_ops_write */
php_zip_ops_write(php_stream * stream,const char * buf,size_t count)81 static ssize_t php_zip_ops_write(php_stream *stream, const char *buf, size_t count)
82 {
83 if (!stream) {
84 return -1;
85 }
86
87 return count;
88 }
89 /* }}} */
90
91 /* {{{ php_zip_ops_close */
php_zip_ops_close(php_stream * stream,int close_handle)92 static int php_zip_ops_close(php_stream *stream, int close_handle)
93 {
94 STREAM_DATA_FROM_STREAM();
95 if (close_handle) {
96 if (self->zf) {
97 zip_fclose(self->zf);
98 self->zf = NULL;
99 }
100
101 if (self->za) {
102 zip_close(self->za);
103 self->za = NULL;
104 }
105 }
106 efree(self);
107 stream->abstract = NULL;
108 return EOF;
109 }
110 /* }}} */
111
112 /* {{{ php_zip_ops_flush */
php_zip_ops_flush(php_stream * stream)113 static int php_zip_ops_flush(php_stream *stream)
114 {
115 if (!stream) {
116 return 0;
117 }
118
119 return 0;
120 }
121 /* }}} */
122
php_zip_ops_stat(php_stream * stream,php_stream_statbuf * ssb)123 static int php_zip_ops_stat(php_stream *stream, php_stream_statbuf *ssb) /* {{{ */
124 {
125 struct zip_stat sb;
126 const char *path = stream->orig_path;
127 size_t path_len = strlen(stream->orig_path);
128 char file_dirname[MAXPATHLEN];
129 struct zip *za;
130 char *fragment;
131 size_t fragment_len;
132 int err;
133 zend_string *file_basename;
134
135 fragment = strchr(path, '#');
136 if (!fragment) {
137 return -1;
138 }
139
140
141 if (strncasecmp("zip://", path, 6) == 0) {
142 path += 6;
143 }
144
145 fragment_len = strlen(fragment);
146
147 if (fragment_len < 1) {
148 return -1;
149 }
150 path_len = strlen(path);
151 if (path_len >= MAXPATHLEN) {
152 return -1;
153 }
154
155 memcpy(file_dirname, path, path_len - fragment_len);
156 file_dirname[path_len - fragment_len] = '\0';
157
158 file_basename = php_basename((char *)path, path_len - fragment_len, NULL, 0);
159 fragment++;
160
161 if (ZIP_OPENBASEDIR_CHECKPATH(file_dirname)) {
162 zend_string_release_ex(file_basename, 0);
163 return -1;
164 }
165
166 za = zip_open(file_dirname, ZIP_CREATE, &err);
167 if (za) {
168 memset(ssb, 0, sizeof(php_stream_statbuf));
169 if (zip_stat(za, fragment, ZIP_FL_NOCASE, &sb) != 0) {
170 zip_close(za);
171 zend_string_release_ex(file_basename, 0);
172 return -1;
173 }
174 zip_close(za);
175
176 if (path[path_len-1] != '/') {
177 ssb->sb.st_size = sb.size;
178 ssb->sb.st_mode |= S_IFREG; /* regular file */
179 } else {
180 ssb->sb.st_size = 0;
181 ssb->sb.st_mode |= S_IFDIR; /* regular directory */
182 }
183
184 ssb->sb.st_mtime = sb.mtime;
185 ssb->sb.st_atime = sb.mtime;
186 ssb->sb.st_ctime = sb.mtime;
187 ssb->sb.st_nlink = 1;
188 ssb->sb.st_rdev = -1;
189 #ifndef PHP_WIN32
190 ssb->sb.st_blksize = -1;
191 ssb->sb.st_blocks = -1;
192 #endif
193 ssb->sb.st_ino = -1;
194 }
195 zend_string_release_ex(file_basename, 0);
196 return 0;
197 }
198 /* }}} */
199
200 const php_stream_ops php_stream_zipio_ops = {
201 php_zip_ops_write, php_zip_ops_read,
202 php_zip_ops_close, php_zip_ops_flush,
203 "zip",
204 NULL, /* seek */
205 NULL, /* cast */
206 php_zip_ops_stat, /* stat */
207 NULL /* set_option */
208 };
209
210 /* {{{ php_stream_zip_open */
php_stream_zip_open(struct zip * arch,const char * path,const char * mode STREAMS_DC)211 php_stream *php_stream_zip_open(struct zip *arch, const char *path, const char *mode STREAMS_DC)
212 {
213 struct zip_file *zf = NULL;
214
215 php_stream *stream = NULL;
216 struct php_zip_stream_data_t *self;
217
218 if (strncmp(mode,"r", strlen("r")) != 0) {
219 return NULL;
220 }
221
222 if (arch) {
223 zf = zip_fopen(arch, path, 0);
224 if (zf) {
225 self = emalloc(sizeof(*self));
226
227 self->za = NULL; /* to keep it open on stream close */
228 self->zf = zf;
229 self->stream = NULL;
230 self->cursor = 0;
231 stream = php_stream_alloc(&php_stream_zipio_ops, self, NULL, mode);
232 stream->orig_path = estrdup(path);
233 }
234 }
235
236 return stream;
237 }
238 /* }}} */
239
240 /* {{{ php_stream_zip_opener */
php_stream_zip_opener(php_stream_wrapper * wrapper,const char * path,const char * mode,int options,zend_string ** opened_path,php_stream_context * context STREAMS_DC)241 php_stream *php_stream_zip_opener(php_stream_wrapper *wrapper,
242 const char *path,
243 const char *mode,
244 int options,
245 zend_string **opened_path,
246 php_stream_context *context STREAMS_DC)
247 {
248 size_t path_len;
249
250 zend_string *file_basename;
251 char file_dirname[MAXPATHLEN];
252
253 struct zip *za;
254 struct zip_file *zf = NULL;
255 char *fragment;
256 size_t fragment_len;
257 int err;
258
259 php_stream *stream = NULL;
260 struct php_zip_stream_data_t *self;
261
262 fragment = strchr(path, '#');
263 if (!fragment) {
264 return NULL;
265 }
266
267 if (strncasecmp("zip://", path, 6) == 0) {
268 path += 6;
269 }
270
271 fragment_len = strlen(fragment);
272
273 if (fragment_len < 1) {
274 return NULL;
275 }
276 path_len = strlen(path);
277 if (path_len >= MAXPATHLEN || mode[0] != 'r') {
278 return NULL;
279 }
280
281 memcpy(file_dirname, path, path_len - fragment_len);
282 file_dirname[path_len - fragment_len] = '\0';
283
284 file_basename = php_basename(path, path_len - fragment_len, NULL, 0);
285 fragment++;
286
287 if (ZIP_OPENBASEDIR_CHECKPATH(file_dirname)) {
288 zend_string_release_ex(file_basename, 0);
289 return NULL;
290 }
291
292 za = zip_open(file_dirname, ZIP_CREATE, &err);
293 if (za) {
294 zval *tmpzval;
295
296 if (context && NULL != (tmpzval = php_stream_context_get_option(context, "zip", "password"))) {
297 if (Z_TYPE_P(tmpzval) != IS_STRING || zip_set_default_password(za, Z_STRVAL_P(tmpzval))) {
298 php_error_docref(NULL, E_WARNING, "Can't set zip password");
299 }
300 }
301
302 zf = zip_fopen(za, fragment, 0);
303 if (zf) {
304 self = emalloc(sizeof(*self));
305
306 self->za = za;
307 self->zf = zf;
308 self->stream = NULL;
309 self->cursor = 0;
310 stream = php_stream_alloc(&php_stream_zipio_ops, self, NULL, mode);
311
312 if (opened_path) {
313 *opened_path = zend_string_init(path, strlen(path), 0);
314 }
315 } else {
316 zip_close(za);
317 }
318 }
319
320 zend_string_release_ex(file_basename, 0);
321
322 if (!stream) {
323 return NULL;
324 } else {
325 return stream;
326 }
327 }
328 /* }}} */
329
330 static const php_stream_wrapper_ops zip_stream_wops = {
331 php_stream_zip_opener,
332 NULL, /* close */
333 NULL, /* fstat */
334 NULL, /* stat */
335 NULL, /* opendir */
336 "zip wrapper",
337 NULL, /* unlink */
338 NULL, /* rename */
339 NULL, /* mkdir */
340 NULL, /* rmdir */
341 NULL /* metadata */
342 };
343
344 const php_stream_wrapper php_stream_zip_wrapper = {
345 &zip_stream_wops,
346 NULL,
347 0 /* is_url */
348 };
349 #endif /* HAVE_ZIP */
350
