1 /*
2 * libwebsockets - small server side websockets and web server implementation
3 *
4 * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 * IN THE SOFTWARE.
23 */
24
25 #ifndef _WINSOCK_DEPRECATED_NO_WARNINGS
26 #define _WINSOCK_DEPRECATED_NO_WARNINGS
27 #endif
28 #include "private-lib-core.h"
29
lws_plat_apply_FD_CLOEXEC(int n)30 int lws_plat_apply_FD_CLOEXEC(int n)
31 {
32 return 0;
33 }
34
35 lws_fop_fd_t
_lws_plat_file_open(const struct lws_plat_file_ops *fops, const char *filename, const char *vpath, lws_fop_flags_t *flags)36 _lws_plat_file_open(const struct lws_plat_file_ops *fops, const char *filename,
37 const char *vpath, lws_fop_flags_t *flags)
38 {
39 HANDLE ret;
40 WCHAR buf[MAX_PATH];
41 lws_fop_fd_t fop_fd;
42 LARGE_INTEGER llFileSize = {0};
43
44 MultiByteToWideChar(CP_UTF8, 0, filename, -1, buf, LWS_ARRAY_SIZE(buf));
45 if (((*flags) & 7) == _O_RDONLY)
46 ret = CreateFileW(buf, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
47 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
48 else
49 ret = CreateFileW(buf, GENERIC_WRITE, 0, NULL,
50 CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
51
52 if (ret == NULL)
53 goto bail;
54
55 fop_fd = malloc(sizeof(*fop_fd));
56 if (!fop_fd)
57 goto bail;
58
59 fop_fd->fops = fops;
60 #if defined(__MINGW32__)
61 /* we use filesystem_priv */
62 fop_fd->fd = (int)(intptr_t)ret;
63 #else
64 fop_fd->fd = ret;
65 #endif
66 fop_fd->filesystem_priv = ret;
67 fop_fd->flags = *flags;
68 fop_fd->len = GetFileSize(ret, NULL);
69 if(GetFileSizeEx(ret, &llFileSize))
70 fop_fd->len = llFileSize.QuadPart;
71
72 fop_fd->pos = 0;
73
74 return fop_fd;
75
76 bail:
77 return NULL;
78 }
79
80 int
_lws_plat_file_close(lws_fop_fd_t *fop_fd)81 _lws_plat_file_close(lws_fop_fd_t *fop_fd)
82 {
83 HANDLE fd = (*fop_fd)->filesystem_priv;
84
85 free(*fop_fd);
86 *fop_fd = NULL;
87
88 CloseHandle((HANDLE)fd);
89
90 return 0;
91 }
92
93 lws_fileofs_t
_lws_plat_file_seek_cur(lws_fop_fd_t fop_fd, lws_fileofs_t offset)94 _lws_plat_file_seek_cur(lws_fop_fd_t fop_fd, lws_fileofs_t offset)
95 {
96 LARGE_INTEGER l;
97
98 l.QuadPart = offset;
99 if (!SetFilePointerEx((HANDLE)fop_fd->filesystem_priv, l, NULL, FILE_CURRENT))
100 {
101 lwsl_err("error seeking from cur %ld, offset %ld\n", (long)fop_fd->pos, (long)offset);
102 return -1;
103 }
104
105 LARGE_INTEGER zero;
106 zero.QuadPart = 0;
107 LARGE_INTEGER newPos;
108 if (!SetFilePointerEx((HANDLE)fop_fd->filesystem_priv, zero, &newPos, FILE_CURRENT))
109 {
110 lwsl_err("error seeking from cur %ld, offset %ld\n", (long)fop_fd->pos, (long)offset);
111 return -1;
112 }
113 fop_fd->pos = newPos.QuadPart;
114
115 return newPos.QuadPart;
116 }
117
118 int
_lws_plat_file_read(lws_fop_fd_t fop_fd, lws_filepos_t *amount, uint8_t *buf, lws_filepos_t len)119 _lws_plat_file_read(lws_fop_fd_t fop_fd, lws_filepos_t *amount,
120 uint8_t *buf, lws_filepos_t len)
121 {
122 DWORD _amount;
123
124 if (!ReadFile((HANDLE)fop_fd->filesystem_priv, buf, (DWORD)len, &_amount, NULL)) {
125 *amount = 0;
126
127 return 1;
128 }
129
130 fop_fd->pos += _amount;
131 *amount = (unsigned long)_amount;
132
133 return 0;
134 }
135
136 int
_lws_plat_file_write(lws_fop_fd_t fop_fd, lws_filepos_t *amount, uint8_t* buf, lws_filepos_t len)137 _lws_plat_file_write(lws_fop_fd_t fop_fd, lws_filepos_t *amount,
138 uint8_t* buf, lws_filepos_t len)
139 {
140 DWORD _amount;
141
142 if (!WriteFile((HANDLE)fop_fd->filesystem_priv, buf, (DWORD)len, &_amount, NULL)) {
143 *amount = 0;
144
145 return 1;
146 }
147
148 fop_fd->pos += _amount;
149 *amount = (unsigned long)_amount;
150
151 return 0;
152 }
153
154
155 int
lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf, size_t len)156 lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
157 size_t len)
158 {
159 int n;
160
161 n = (int)write(fd, buf, (unsigned int)len);
162
163 lseek(fd, 0, SEEK_SET);
164
165 return (size_t)n != len;
166 }
167
168 int
lws_plat_write_file(const char *filename, void *buf, size_t len)169 lws_plat_write_file(const char *filename, void *buf, size_t len)
170 {
171 int m, fd;
172
173 fd = lws_open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0600);
174
175 if (fd == -1)
176 return -1;
177
178 m = (int)write(fd, buf, (unsigned int)len);
179 close(fd);
180
181 return (size_t)m != len;
182 }
183
184 int
lws_plat_read_file(const char *filename, void *buf, size_t len)185 lws_plat_read_file(const char *filename, void *buf, size_t len)
186 {
187 int n, fd = lws_open(filename, O_RDONLY);
188 if (fd == -1)
189 return -1;
190
191 n = (int)read(fd, buf, (unsigned int)len);
192 close(fd);
193
194 return n;
195 }
196
197