git.zerfleddert.de Git - usb-driver/blob - usb-driver.c

   1 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
   2
   3 #define _GNU_SOURCE 1
   4
   5 #if defined(RTLD_NEXT)
   6 #define REAL_LIBC RTLD_NEXT
   7 #else
   8 #define REAL_LIBC ((void *) -1L)
   9 #endif
  10
  11 #include <dlfcn.h>
  12 #include <stdarg.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <unistd.h>
  16 #include <fcntl.h>
  17 #include <sys/types.h>
  18 #include <sys/stat.h>
  19 #include <sys/time.h>
  20 #include <stdio.h>
  21 #include "xilinx.h"
  22
  23 #define SNIFFLEN 4096
  24 static unsigned char lastbuf[4096];
  25
  26 void hexdump(unsigned char *buf, int len);
  27 void diff(unsigned char *buf1, unsigned char *buf2, int len);
  28
  29 void parse_wdioctlreq(unsigned char *wdioctl, unsigned int request) {
  30         struct header_struct* wdheader = (struct header_struct*)wdioctl;
  31
  32         if (wdheader->magic != MAGIC) {
  33                 fprintf(stderr,"!!!ERROR: Header does not match!!!\n");
  34                 return;
  35         }
  36
  37         fprintf(stderr, "Request: ");
  38         switch(request) {
  39                 case VERSION:
  40                         fprintf(stderr,"VERSION");
  41                         break;
  42                 case LICENSE:
  43                         fprintf(stderr,"LICENSE");
  44                         fprintf(stderr," \"%s\" (XX,XX)", ((struct license_struct*)(wdheader->data))->cLicense);
  45                         break;
  46                 case TRANSFER:
  47                         fprintf(stderr,"TRANSFER");
  48                         break;
  49                 case USB_TRANSFER:
  50                         fprintf(stderr,"USB_TRANSFER");
  51                 #if 0
  52                         {
  53                                 struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data);
  54
  55                                 fprintf(stderr," unique: %d, pipe: %d, read: %d, options: %x, size: %d, timeout: %x\n", ut->dwUniqueID, ut->dwPipeNum, ut->fRead, ut->dwOptions, ut->dwBufferSize, ut->dwTimeout);
  56                                 memcpy(lastbuf, ut->pBuffer, ut->dwBufferSize);
  57                                 hexdump(ut->pBuffer, ut->dwBufferSize);
  58                                 fprintf(stderr,"\n");
  59                         }
  60                         fprintf(stderr,"\n");
  61 #endif
  62                         break;
  63                 case EVENT_UNREGISTER:
  64                         fprintf(stderr,"EVENT_UNREGISTER");
  65                         break;
  66                 case INT_DISABLE:
  67                         fprintf(stderr,"INT_DISABLE");
  68                         break;
  69                 case INT_WAIT:
  70                         fprintf(stderr,"INT_WAIT");
  71                         break;
  72                 case CARD_UNREGISTER:
  73                         fprintf(stderr,"CARD_UNREGISTER");
  74                         break;
  75                 case USB_GET_DEVICE_DATA:
  76                         fprintf(stderr,"USB_GET_DEVICE_DATA");
  77                         break;
  78                 case INT_ENABLE:
  79                         fprintf(stderr,"INT_ENABLE");
  80                         break;
  81                 case EVENT_PULL:
  82                         fprintf(stderr,"EVENT_PULL");
  83                         break;
  84                 case USB_SET_INTERFACE:
  85                         fprintf(stderr,"USB_SET_INTERFACE");
  86                         break;
  87                 case EVENT_REGISTER:
  88                         {
  89                                 struct event *e = (struct event*)(wdheader->data);
  90                                 fprintf(stderr,"%x:%x ", e->u.Usb.deviceId.dwVendorId, e->u.Usb.deviceId.dwProductId);
  91                                 fprintf(stderr,"match: %04x:%04x\n", e->matchTables[0].VendorId, e->matchTables[0].ProductId);
  92                         }
  93                         memcpy(lastbuf, wdheader->data, wdheader->size);
  94                         fprintf(stderr,"EVENT_REGISTER");
  95                         break;
  96                 case CARD_REGISTER:
  97                         break;
  98                 default:
  99                         memcpy(lastbuf, wdheader->data, wdheader->size);
 100                         fprintf(stderr,"\n");
 101                         hexdump(wdheader->data, wdheader->size);
 102                         fprintf(stderr,"\n");
 103                         fprintf(stderr,"Unknown(%x)",request);
 104         }
 105
 106         fprintf(stderr, ", size: %d\n", wdheader->size);
 107 }
 108
 109 void parse_wdioctlans(unsigned char *wdioctl, unsigned int request, int result) {
 110         struct header_struct* wdheader = (struct header_struct*)wdioctl;
 111
 112         if (wdheader->magic != MAGIC) {
 113                 fprintf(stderr,"!!!ERROR: Header does not match!!!\n");
 114                 return;
 115         }
 116
 117         fprintf(stderr, "Answer: %d ", result);
 118         switch(request) {
 119                 case VERSION:
 120                         fprintf(stderr,"\"%s\" (%d)", ((struct version_struct*)(wdheader->data))->version, ((struct version_struct*)(wdheader->data))->versionul);
 121                         break;
 122                 case LICENSE:
 123                         fprintf(stderr,"\"%s\" (XX,XX)", ((struct license_struct*)(wdheader->data))->cLicense);
 124                         break;
 125                 case TRANSFER:
 126                 case EVENT_UNREGISTER:
 127                 case INT_DISABLE:
 128                 case INT_WAIT:
 129                 case CARD_UNREGISTER:
 130                 case USB_GET_DEVICE_DATA:
 131                 case INT_ENABLE:
 132                 case EVENT_PULL:
 133                 case USB_SET_INTERFACE:
 134                 case CARD_REGISTER:
 135                         break;
 136                 case EVENT_REGISTER:
 137                         fprintf(stderr,"\n");
 138                         diff(lastbuf, wdheader->data, wdheader->size);
 139                         break;
 140                 case USB_TRANSFER:
 141                         {
 142                                 struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data);
 143
 144                                 fprintf(stderr,"\nTransferred: %d (%s)",ut->dwBytesTransferred, (ut->fRead?"read":"write"));
 145                                 if (ut->fRead && ut->dwBytesTransferred)
 146                                 {
 147                                         fprintf(stderr,"\nRead: ");
 148                                         hexdump(ut->pBuffer, ut->dwBytesTransferred);
 149                                 }
 150                                 #if 0
 151                                 hexdump(ut->pBuffer, ut->dwBufferSize);
 152                                 fprintf(stderr,"\n");
 153                                 diff(lastbuf, ut->pBuffer, ut->dwBufferSize);
 154                                 #endif
 155                         }
 156                         break;
 157                 default:
 158                         fprintf(stderr,"\n");
 159                         hexdump(wdheader->data, wdheader->size);
 160                         fprintf(stderr,"\n");
 161                         diff(lastbuf, wdheader->data, wdheader->size);
 162                         break;
 163         }
 164         fprintf(stderr, "\n", wdheader->size);
 165 }
 166
 167 int do_wdioctl(unsigned int request, unsigned char *wdioctl) {
 168         struct header_struct* wdheader = (struct header_struct*)wdioctl;
 169         struct version_struct *version;
 170
 171         if (wdheader->magic != MAGIC) {
 172                 fprintf(stderr,"!!!ERROR: Header does not match!!!\n");
 173                 return;
 174         }
 175
 176         switch(request) {
 177                 case VERSION:
 178                         version = (struct version_struct*)(wdheader->data);
 179                         strcpy(version->version, "WinDriver no more");
 180                         version->versionul = 999;
 181                         fprintf(stderr,"faking VERSION\n");
 182                         break;
 183                 case CARD_REGISTER:
 184                         {
 185                                 struct card_register* cr = (struct card_register*)(wdheader->data);
 186                                 /* Todo: LPT-Port already in use */
 187                         }
 188                         fprintf(stderr,"faking CARD_REGISTER\n");
 189                         break;
 190                 case USB_TRANSFER:
 191                         fprintf(stderr,"in USB_TRANSFER");
 192                         {
 193                                 struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data);
 194
 195                                 fprintf(stderr," unique: %d, pipe: %d, read: %d, options: %x, size: %d, timeout: %x\n", ut->dwUniqueID, ut->dwPipeNum, ut->fRead, ut->dwOptions, ut->dwBufferSize, ut->dwTimeout);
 196                                 fprintf(stderr,"setup packet: ");
 197                                 hexdump(ut->SetupPacket, 8);
 198                                 if (!ut->fRead && ut->dwBufferSize)
 199                                 {
 200                                         hexdump(ut->pBuffer, ut->dwBufferSize);
 201                                         fprintf(stderr,"\n");
 202                                 }
 203                         }
 204                 case LICENSE:
 205                 case TRANSFER:
 206                 case EVENT_UNREGISTER:
 207                 case INT_DISABLE:
 208                 case INT_WAIT:
 209                 case CARD_UNREGISTER:
 210                 case USB_GET_DEVICE_DATA:
 211                 case INT_ENABLE:
 212                 case EVENT_PULL:
 213                 case USB_SET_INTERFACE:
 214                 case EVENT_REGISTER:
 215                 default:
 216                         return -1;
 217         }
 218
 219         return 0;
 220 }
 221
 222
 223 typedef int (*open_funcptr_t) (const char *, int, mode_t);
 224
 225 static windrvrfd = 0;
 226 static void* mmapped = NULL;
 227 static size_t mmapplen = 0;
 228
 229 int open (const char *pathname, int flags, ...)
 230 {
 231         static open_funcptr_t func = NULL;
 232         mode_t mode = 0;
 233         va_list args;
 234         int fd;
 235
 236         if (!func)
 237                 func = (open_funcptr_t) dlsym (REAL_LIBC, "open");
 238
 239         if (flags & O_CREAT) {
 240                 va_start(args, flags);
 241                 mode = va_arg(args, mode_t);
 242                 va_end(args);
 243         }
 244
 245         fd = (*func) (pathname, flags, mode);
 246
 247         if (!strcmp (pathname, "/dev/windrvr6")) {
 248                 fprintf(stderr,"opening windrvr6\n");
 249                 windrvrfd = fd;
 250         }
 251
 252         return fd;
 253 }
 254
 255 void diff(unsigned char *buf1, unsigned char *buf2, int len) {
 256         int i;
 257
 258         for(i=0; i<len; i++) {
 259                 if (buf1[i] != buf2[i]) {
 260                         fprintf(stderr,"Diff at %d: %02x(%c)->%02x(%c)\n", i, buf1[i], ((buf1[i] >= 31 && buf1[i] <= 126)?buf1[i]:'.'), buf2[i], ((buf2[i] >= 31 && buf2[i] <= 126)?buf2[i]:'.'));
 261                 }
 262         }
 263 }
 264
 265 void hexdump(unsigned char *buf, int len) {
 266         int i;
 267
 268         for(i=0; i<len; i++) {
 269                 fprintf(stderr,"%02x ", buf[i]);
 270                 if ((i % 16) == 15)
 271                         fprintf(stderr,"\n");
 272         }
 273 }
 274
 275 int ioctl(int fd, int request, ...)
 276 {
 277         static int (*func) (int, int, void *) = NULL;
 278         va_list args;
 279         void *argp;
 280         int ret;
 281
 282         if (!func)
 283                 func = (int (*) (int, int, void *)) dlsym (REAL_LIBC, "ioctl");
 284
 285         va_start (args, request);
 286         argp = va_arg (args, void *);
 287         va_end (args);
 288
 289         if (fd == windrvrfd) {
 290                 parse_wdioctlreq(argp, request);
 291
 292                 if ((ret = do_wdioctl(request, argp)))
 293                         ret = (*func) (fd, request, argp);
 294         } else {
 295                 ret = (*func) (fd, request, argp);
 296         }
 297
 298         if (fd == windrvrfd) {
 299                 parse_wdioctlans(argp, request, ret);
 300         }
 301         return ret;
 302 }
 303
 304 #if 0
 305 void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
 306 {
 307         static void* (*func) (void *, size_t, int, int, int, off_t) = NULL;
 308         void *ret;
 309
 310         if (!func)
 311                 func = (void* (*) (void *, size_t, int, int, int, off_t)) dlsym (REAL_LIBC, "mmap");
 312
 313         ret = (*func) (start, length, prot, flags, fd, offset);
 314         fprintf(stderr,"MMAP: %x, %d, %d, %d, %d, %d -> %x\n", (unsigned int)start, length, prot, flags, fd, offset, (unsigned int)ret);
 315         mmapped = ret;
 316         mmapplen = length;
 317
 318         return ret;
 319 }
 320
 321 void *mmap64(void *start, size_t length, int prot, int flags, int fd, off64_t offset)
 322 {
 323         static void* (*func) (void *, size_t, int, int, int, off64_t) = NULL;
 324         void *ret;
 325
 326         if (!func)
 327                 func = (void* (*) (void *, size_t, int, int, int, off64_t)) dlsym (REAL_LIBC, "mmap64");
 328
 329         ret = (*func) (start, length, prot, flags, fd, offset);
 330         fprintf(stderr,"MMAP64: %x, %d, %d, %d, %d, %lld -> %x\n", (unsigned int)start, length, prot, flags, fd, offset, (unsigned int)ret);
 331         mmapped = ret;
 332         mmapplen = length;
 333
 334         return ret;
 335 }
 336
 337 void *mmap2(void *start, size_t length, int prot, int flags, int fd, off_t pgoffset)
 338 {
 339         static void* (*func) (void *, size_t, int, int, int, off_t) = NULL;
 340         void *ret;
 341
 342         if (!func)
 343                 func = (void* (*) (void *, size_t, int, int, int, off_t)) dlsym (REAL_LIBC, "mmap2");
 344
 345         ret = (*func) (start, length, prot, flags, fd, pgoffset);
 346         fprintf(stderr,"MMAP2: %x, %d, %d, %d, %d, %d -> %x\n", (unsigned int)start, length, prot, flags, fd, pgoffset, (unsigned int)ret);
 347         mmapped = ret;
 348         mmapplen = length;
 349
 350         return ret;
 351 }
 352
 353 void *malloc(size_t size)
 354 {
 355         static void* (*func) (size_t) = NULL;
 356         void *ret;
 357
 358         if (!func)
 359                 func = (void* (*) (size_t)) dlsym(REAL_LIBC, "malloc");
 360
 361         ret = (*func) (size);
 362
 363         //fprintf(stderr,"MALLOC: %d -> %x\n", size, (unsigned int) ret);
 364
 365         return ret;
 366 }
 367 #endif
 368
 369
 370 #endif