1 #include "php.h"
2
3 #include <malloc.h>
4 #include <string.h>
5 #include <errno.h>
6
7 #include "readdir.h"
8 #include "win32/ioutil.h"
9
10 /**********************************************************************
11 * Implement dirent-style opendir/readdir/rewinddir/closedir on Win32
12 *
13 * Functions defined are opendir(), readdir(), rewinddir() and
14 * closedir() with the same prototypes as the normal dirent.h
15 * implementation.
16 *
17 * Does not implement telldir(), seekdir(), or scandir(). The dirent
18 * struct is compatible with Unix, except that d_ino is always 1 and
19 * d_off is made up as we go along.
20 *
21 * The DIR typedef is not compatible with Unix.
22 **********************************************************************/
23
opendir(const char * dir)24 DIR *opendir(const char *dir)
25 {/*{{{*/
26 DIR *dp;
27 wchar_t *filespecw, *resolvedw;
28 HANDLE handle;
29 char resolved_path_buff[MAXPATHLEN];
30 size_t resolvedw_len, filespecw_len, index;
31 bool might_need_prefix;
32
33 if (!VCWD_REALPATH(dir, resolved_path_buff)) {
34 return NULL;
35 }
36
37 resolvedw = php_win32_ioutil_conv_any_to_w(resolved_path_buff, PHP_WIN32_CP_IGNORE_LEN, &resolvedw_len);
38 if (!resolvedw) {
39 return NULL;
40 }
41
42 might_need_prefix = resolvedw_len >= 3 && PHP_WIN32_IOUTIL_IS_LETTERW(resolvedw[0]) && L':' == resolvedw[1] && PHP_WIN32_IOUTIL_IS_SLASHW(resolvedw[2]);
43
44 filespecw_len = resolvedw_len + 2;
45 if (filespecw_len >= _MAX_PATH && might_need_prefix) {
46 filespecw_len += PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW;
47 }
48 filespecw = (wchar_t *)malloc((filespecw_len + 1)*sizeof(wchar_t));
49 if (filespecw == NULL) {
50 free(resolvedw);
51 return NULL;
52 }
53
54 if (filespecw_len >= _MAX_PATH && might_need_prefix) {
55 wcscpy(filespecw, PHP_WIN32_IOUTIL_LONG_PATH_PREFIXW);
56 wcscpy(filespecw + PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW, resolvedw);
57 index = resolvedw_len + PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW - 1;
58 } else {
59 wcscpy(filespecw, resolvedw);
60 index = resolvedw_len - 1;
61 }
62 if (index >= 0 && filespecw[index] == L'/' || index == 0 && filespecw[index] == L'\\')
63 filespecw[index] = L'\0';
64 wcscat(filespecw, L"\\*");
65
66 dp = (DIR *) calloc(1, sizeof(DIR) + (_MAX_FNAME*5+1)*sizeof(char));
67 if (dp == NULL) {
68 free(filespecw);
69 free(resolvedw);
70 return NULL;
71 }
72
73 if ((handle = FindFirstFileExW(filespecw, FindExInfoBasic, &(dp->fileinfo), FindExSearchNameMatch, NULL, FIND_FIRST_EX_LARGE_FETCH)) == INVALID_HANDLE_VALUE) {
74 DWORD err = GetLastError();
75 if (err == ERROR_NO_MORE_FILES || err == ERROR_FILE_NOT_FOUND) {
76 dp->finished = 1;
77 } else {
78 free(dp);
79 free(filespecw);
80 free(resolvedw);
81 return NULL;
82 }
83 }
84 dp->dirw = _wcsdup(resolvedw);
85 dp->handle = handle;
86 dp->offset = 0;
87 dp->finished = 0;
88
89 free(filespecw);
90 free(resolvedw);
91
92 return dp;
93 }/*}}}*/
94
readdir(DIR * dp)95 struct dirent *readdir(DIR *dp)
96 {/*{{{*/
97 char *_tmp;
98 size_t reclen;
99
100 if (!dp || dp->finished)
101 return NULL;
102
103 if (dp->offset != 0) {
104 if (FindNextFileW(dp->handle, &(dp->fileinfo)) == 0) {
105 dp->finished = 1;
106 return NULL;
107 }
108 }
109
110 _tmp = php_win32_cp_conv_w_to_any(dp->fileinfo.cFileName, PHP_WIN32_CP_IGNORE_LEN, &reclen);
111 if (!_tmp) {
112 /* wide to utf8 failed, should never happen. */
113 return NULL;
114 }
115 memmove(dp->dent.d_name, _tmp, reclen + 1);
116 free(_tmp);
117 dp->dent.d_reclen = (unsigned short)reclen;
118
119 dp->offset++;
120
121 dp->dent.d_ino = 1;
122 dp->dent.d_off = dp->offset;
123
124 return &(dp->dent);
125 }/*}}}*/
126
closedir(DIR * dp)127 int closedir(DIR *dp)
128 {/*{{{*/
129 if (!dp)
130 return 0;
131 /* It is valid to scan an empty directory but we have an invalid
132 handle in this case (no first file found). */
133 if (dp->handle != INVALID_HANDLE_VALUE) {
134 FindClose(dp->handle);
135 }
136 if (dp->dirw)
137 free(dp->dirw);
138 if (dp)
139 free(dp);
140
141 return 0;
142 }/*}}}*/
143
rewinddir(DIR * dp)144 int rewinddir(DIR *dp)
145 {/*{{{*/
146 /* Re-set to the beginning */
147 wchar_t *filespecw;
148 HANDLE handle;
149 size_t dirw_len, filespecw_len, index;
150 bool might_need_prefix;
151
152 FindClose(dp->handle);
153
154 dp->offset = 0;
155 dp->finished = 0;
156
157 /* XXX save the dir len into the struct. */
158 dirw_len = wcslen((wchar_t *)dp->dirw);
159
160 might_need_prefix = dirw_len >= 3 && PHP_WIN32_IOUTIL_IS_LETTERW(dp->dirw[0]) && L':' == dp->dirw[1] && PHP_WIN32_IOUTIL_IS_SLASHW(dp->dirw[2]);
161
162 filespecw_len = dirw_len + 2;
163 if (filespecw_len >= _MAX_PATH && might_need_prefix) {
164 filespecw_len += PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW;
165 }
166
167 filespecw = (wchar_t *)malloc((filespecw_len + 1)*sizeof(wchar_t));
168 if (filespecw == NULL) {
169 return -1;
170 }
171
172 if (filespecw_len >= _MAX_PATH && might_need_prefix) {
173 wcscpy(filespecw, PHP_WIN32_IOUTIL_LONG_PATH_PREFIXW);
174 wcscpy(filespecw + PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW, dp->dirw);
175 index = dirw_len + PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW - 1;
176 } else {
177 wcscpy(filespecw, dp->dirw);
178 index = dirw_len - 1;
179 }
180
181 if (index >= 0 && (filespecw[index] == L'/' ||
182 (filespecw[index] == L'\\' && index == 0)))
183 filespecw[index] = L'\0';
184 wcscat(filespecw, L"\\*");
185
186 if ((handle = FindFirstFileExW(filespecw, FindExInfoBasic, &(dp->fileinfo), FindExSearchNameMatch, NULL, FIND_FIRST_EX_LARGE_FETCH)) == INVALID_HANDLE_VALUE) {
187 dp->finished = 1;
188 }
189
190 free(filespecw);
191 dp->handle = handle;
192
193 return 0;
194 }/*}}}*/
195
