wok view syslinux/stuff/iso2exe/win32.c @ rev 18787

busybox: /init calls some busybox applets, keep then (Thanks llev)
author Pascal Bellard <pascal.bellard@slitaz.org>
date Mon Jan 04 20:59:14 2016 +0100 (2016-01-04)
parents 19258b949c1b
children 8dbbd1b93962
line source
1 #include <windows.h>
2 #include <winnt.h>
3 #include <sys/types.h>
4 #include <sys/stat.h>
5 #include <fcntl.h>
6
7 #define BOOTSTRAP_SECTOR_COUNT_OFFSET 26
8
9 static int fullread(int fd, char *p, int n)
10 {
11 int i, j;
12 for (i = 0; n > 0; i += j, n -= j) {
13 j = read(fd, p + i, n);
14 if (j <= 0) break;
15 }
16 return i;
17 #define read fullread
18 }
19
20 static int fullwrite(int fd, char *p, int n)
21 {
22 int i, j;
23 for (i = 0; n > 0; i += j, n -= j) {
24 j = write(fd, p + i, n);
25 if (j <= 0) break;
26 }
27 return i;
28 #define write fullwrite
29 }
30
31 static void exec16bits(char *isoFileName)
32 {
33 int fdiso, fdtmp, i;
34 long buffer[512/4];
35 char tmpFileName[MAX_PATH], *p;
36
37 strcpy(tmpFileName, isoFileName);
38 p = strrchr(tmpFileName, '\\');
39 if (!p++) p = tmpFileName;
40 strcpy(p, "tazboot.exe");
41 fdiso = open(isoFileName, O_RDONLY|O_BINARY);
42 fdtmp = open(tmpFileName, O_WRONLY|O_BINARY|O_CREAT,0555);
43 for (i = 0; i < 0x8000; i += sizeof(buffer)) {
44 read(fdiso, (char *) buffer, sizeof(buffer));
45 if (i == 0) buffer[15] = 0; // kill PE header
46 write(fdtmp, (char *) buffer, sizeof(buffer));
47 }
48 close(fdiso);
49 close(fdtmp);
50 execl(tmpFileName, isoFileName);
51 }
52
53 static int iswinnt(void)
54 {
55 OSVERSIONINFOA Version;
56 Version.dwOSVersionInfoSize = sizeof(Version);
57 return (GetVersionEx(&Version) &&
58 Version.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS); // not Win9x
59 }
60
61 static int ishybrid(char *isoFileName)
62 {
63 int fdiso;
64 char buffer[2048];
65 unsigned long magic = 0;
66
67 fdiso = open(isoFileName, O_RDONLY|O_BINARY);
68 if (lseek(fdiso, 17 * 2048L, SEEK_SET) != -1 &&
69 read(fdiso, buffer, 2048) == 2048 &&
70 strncmp(buffer+7,"EL TORITO SPECIFICATION",23) == 0) {
71 unsigned long lba = * (unsigned long *) (buffer + 71);
72
73 if (lseek(fdiso, lba * 2048L, SEEK_SET) != -1 &&
74 read(fdiso, buffer, 2048) == 2048 &&
75 * (unsigned long *) (buffer + 0) == 1 &&
76 * (unsigned long *) (buffer + 30) == 0x88AA55) {
77 lba = * (unsigned long *) (buffer + 40);
78 if (lseek(fdiso, lba * 2048L, SEEK_SET) != -1 &&
79 read(fdiso, buffer, 2048) == 2048)
80 magic = * (unsigned long *) (buffer + 64);
81 }
82 }
83 close(fdiso);
84 return (magic == 1886961915);
85 }
86
87 static char buffer[512];
88
89 #define MODE_READ 0
90 #define MODE_WRITE 1
91 static int rdwrsector(int mode, int drive, unsigned long startingsector)
92 {
93 HANDLE hDevice;
94 DWORD result;
95 char devname[sizeof("\\\\.\\PhysicalDrive0")];
96
97 if (drive >= 128) {
98 strcpy(devname, "\\\\.\\PhysicalDrive0");
99 devname[17] += drive - 128;
100 }
101 else {
102 strcpy(devname, "\\\\.\\A:");
103 devname[4] += drive;
104 }
105 hDevice = CreateFile (devname, GENERIC_READ,
106 FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
107 if (hDevice == INVALID_HANDLE_VALUE)
108 return -1;
109 SetFilePointer(hDevice, (startingsector*512), NULL, FILE_BEGIN);
110 if (mode == MODE_READ) {
111 if (!ReadFile(hDevice, buffer, 512, &result, NULL))
112 result = -1;
113 }
114 else {
115 if (!WriteFile(hDevice, buffer, 512, &result, NULL))
116 result = -1;
117 }
118 CloseHandle(hDevice);
119 return result;
120 }
121
122 static int rawrite(unsigned long drive, char *isoFileName)
123 {
124 int fdiso, s, dev;
125
126 if (drive == 0) return;
127 for (dev = 128; (drive & 1) == 0; dev++)
128 drive >>= 1;
129 fdiso = open(isoFileName, O_RDONLY|O_BINARY);
130 for (s = 0;; s++) {
131 int s, n = read(fdiso, buffer, sizeof(buffer));
132 if (n <= 0) break;
133 rdwrsector(MODE_WRITE, dev, s);
134 }
135 close(fdiso);
136 return dev;
137 }
138
139 static unsigned long drives(void)
140 {
141 int i, mask, result;
142
143 for (i = result = 0, mask = 1; i < 8; i++, mask <<= 1) {
144 if (rdwrsector(MODE_READ, i+128, 0) != -1)
145 result |= mask;
146 }
147 return result;
148 }
149
150 static void writefloppy(char *isoFileName)
151 {
152 int i, n, fd;
153
154 buffer[BOOTSTRAP_SECTOR_COUNT_OFFSET] = 0;
155 fd = open(isoFileName, O_RDONLY|O_BINARY);
156 if (fd != -1) {
157 read(fd, buffer, sizeof(buffer));
158 n = buffer[BOOTSTRAP_SECTOR_COUNT_OFFSET];
159 if (n != 0 &&
160 lseek(fd, * (unsigned short *) (buffer + 66) - (512 * n),
161 SEEK_SET) != -1) {
162 for (i = 0; i <= n; i++) {
163 if (i == 1) strncpy(buffer, isoFileName, 512);
164 else read(fd, buffer, 512);
165 rdwrsector(MODE_WRITE, 0, i);
166 }
167 }
168 close(fd);
169 }
170 }
171
172 //TODO #define VCPI_LINUX_LOADER The DOS/EXE loader can boot in VM86 using VCPI API
173 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
174 LPSTR lpCmdLine, int nCmdShow)
175 {
176 char isoFileName[MAX_PATH];
177 char header[32];
178 int fd;
179 int usbkeyicon = MB_ICONASTERISK;
180 char *usbkeymsg = "You can either:\n\n"
181 "- create a SliTaz USB boot key or a boot memory card.\n"
182 " (note that this will be read only like a CDROM.\n"
183 " The Slitaz utility 'tazusb' can be used later to create\n"
184 " a true read/write USB key).\n\n"
185 "- create a SliTaz bootstrap floppy for the ISO image\n"
186 " on the hard disk.\n"
187 "\nDo you want to create a boot key now ?";
188
189 GetModuleFileName(hInstance, isoFileName, MAX_PATH);
190 if (!iswinnt()) {
191 #ifdef VCPI_LINUX_LOADER
192 exec16bits(isoFileName);
193 #else
194 MessageBox(NULL,"No support for Win9x yet.\n"
195 "Retry in DOS mode without emm386.\n",
196 "Sorry", MB_OK|MB_ICONERROR);
197 exit(1);
198 #endif
199 }
200 if (!ishybrid(isoFileName)) {
201 if (MessageBox(NULL,"Not an isolinux hybrid ISO.\n"
202 "This ISO image will not boot\n"
203 "from the media that you create !",
204 "Will not boot !",
205 MB_OKCANCEL|MB_ICONWARNING) == IDCANCEL)
206 exit(0);
207 }
208 header[BOOTSTRAP_SECTOR_COUNT_OFFSET] = 0;
209 fd = open(isoFileName, O_RDONLY|O_BINARY);
210 if (fd != -1) {
211 read(fd, header, sizeof(header));
212 close(fd);
213 }
214 if (header[BOOTSTRAP_SECTOR_COUNT_OFFSET] == 0) { // No floppy bootstrap available
215 usbkeyicon = MB_ICONQUESTION;
216 usbkeymsg = "Do you want to create a boot key ?";
217 }
218 if (MessageBox(NULL,usbkeymsg, "Create a boot stick ?",
219 MB_YESNO|usbkeyicon) == IDYES) {
220 unsigned long base, new;
221 int retry;
222
223 if (MessageBox(NULL,"Step 1: unplug the USB stick.",
224 "Drive detection 1/2",
225 MB_OKCANCEL|MB_ICONEXCLAMATION) == IDCANCEL)
226 exit(0);
227 base = drives();
228 if (MessageBox(NULL,"Step 2: plug the USB stick in.",
229 "Drive detection 2/2",
230 MB_OKCANCEL|MB_ICONEXCLAMATION) == IDCANCEL)
231 exit(0);
232 retry = 0;
233 do {
234 Sleep(1000); // ms
235 new = drives();
236 } while (new == base && retry++ < 10);
237 if (new == base) {
238 MessageBox(NULL,"No USB stick found.","Sorry",
239 MB_OK|MB_ICONERROR);
240 }
241 else {
242 char *msg = "(hd0) is up to date.";
243 msg[3] += rawrite(base ^ new, isoFileName) - 128;
244 MessageBox(NULL,msg,"Finished",MB_OK);
245 }
246 }
247 else if (header[BOOTSTRAP_SECTOR_COUNT_OFFSET] != 0 &&
248 MessageBox(NULL,"Do you want to create a bootstrap floppy ?",
249 "Create a bootstrap floppy ?",
250 MB_YESNO|MB_ICONQUESTION) == IDYES &&
251 MessageBox(NULL,"Insert a floppy disk in drive now",
252 "Insert floppy",
253 MB_OKCANCEL|MB_ICONEXCLAMATION) != IDCANCEL) {
254
255 // Create a 9k bootstrap with vfat, ext2 & ntfs drivers
256 // to boot the ISO image on hard disk
257 writefloppy(isoFileName);
258 MessageBox(NULL,"The bootstrap floppy is up to date.",
259 "Finished",MB_OK);
260 }
261 }