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                 #if 0
 142                         {
 143                                 struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data);
 144
 145                                 fprintf(stderr,"\n");
 146                                 hexdump(ut->pBuffer, ut->dwBufferSize);
 147                                 fprintf(stderr,"\n");
 148                                 diff(lastbuf, ut->pBuffer, ut->dwBufferSize);
 149                         }
 150                 #endif
 151                         break;
 152                 default:
 153                         fprintf(stderr,"\n");
 154                         hexdump(wdheader->data, wdheader->size);
 155                         fprintf(stderr,"\n");
 156                         diff(lastbuf, wdheader->data, wdheader->size);
 157                         break;
 158         }
 159         fprintf(stderr, ", size: %d\n", wdheader->size);
 160 }
 161
 162 int do_wdioctl(unsigned int request, unsigned char *wdioctl) {
 163         struct header_struct* wdheader = (struct header_struct*)wdioctl;
 164         struct version_struct *version;
 165
 166         if (wdheader->magic != MAGIC) {
 167                 fprintf(stderr,"!!!ERROR: Header does not match!!!\n");
 168                 return;
 169         }
 170
 171         switch(request) {
 172                 case VERSION:
 173                         version = (struct version_struct*)(wdheader->data);
 174                         strcpy(version->version, "WinDriver no more");
 175                         version->versionul = 999;
 176                         fprintf(stderr,"faking VERSION\n");
 177                         break;
 178                 case CARD_REGISTER:
 179                         {
 180                                 struct card_register* cr = (struct card_register*)(wdheader->data);
 181                                 /* Todo: LPT-Port already in use */
 182                         }
 183                         fprintf(stderr,"faking CARD_REGISTER\n");
 184                         break;
 185                 case USB_TRANSFER:
 186                         fprintf(stderr,"in USB_TRANSFER");
 187                         {
 188                                 struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data);
 189
 190                                 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);
 191                                 fprintf(stderr,"setup packet: ");
 192                                 hexdump(ut->SetupPacket, 8);
 193                                 if (!ut->fRead && ut->dwBufferSize)
 194                                 {
 195                                         hexdump(ut->pBuffer, ut->dwBufferSize);
 196                                         fprintf(stderr,"\n");
 197                                 }
 198                         }
 199                 case LICENSE:
 200                 case TRANSFER:
 201                 case EVENT_UNREGISTER:
 202                 case INT_DISABLE:
 203                 case INT_WAIT:
 204                 case CARD_UNREGISTER:
 205                 case USB_GET_DEVICE_DATA:
 206                 case INT_ENABLE:
 207                 case EVENT_PULL:
 208                 case USB_SET_INTERFACE:
 209                 case EVENT_REGISTER:
 210                 default:
 211                         return -1;
 212         }
 213
 214         return 0;
 215 }
 216
 217
 218 typedef int (*open_funcptr_t) (const char *, int, mode_t);
 219
 220 static windrvrfd = 0;
 221 static void* mmapped = NULL;
 222 static size_t mmapplen = 0;
 223
 224 int open (const char *pathname, int flags, ...)
 225 {
 226         static open_funcptr_t func = NULL;
 227         mode_t mode = 0;
 228         va_list args;
 229         int fd;
 230
 231         if (!func)
 232                 func = (open_funcptr_t) dlsym (REAL_LIBC, "open");
 233
 234         if (flags & O_CREAT) {
 235                 va_start(args, flags);
 236                 mode = va_arg(args, mode_t);
 237                 va_end(args);
 238         }
 239
 240         fd = (*func) (pathname, flags, mode);
 241
 242         if (!strcmp (pathname, "/dev/windrvr6")) {
 243                 fprintf(stderr,"opening windrvr6\n");
 244                 windrvrfd = fd;
 245         }
 246
 247         return fd;
 248 }
 249
 250 void diff(unsigned char *buf1, unsigned char *buf2, int len) {
 251         int i;
 252
 253         for(i=0; i<len; i++) {
 254                 if (buf1[i] != buf2[i]) {
 255                         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]:'.'));
 256                 }
 257         }
 258 }
 259
 260 void hexdump(unsigned char *buf, int len) {
 261         int i;
 262
 263         for(i=0; i<len; i++) {
 264                 fprintf(stderr,"%02x ", buf[i]);
 265                 if ((i % 16) == 15)
 266                         fprintf(stderr,"\n");
 267         }
 268 }
 269
 270 int ioctl(int fd, int request, ...)
 271 {
 272         static int (*func) (int, int, void *) = NULL;
 273         va_list args;
 274         void *argp;
 275         int ret;
 276
 277         if (!func)
 278                 func = (int (*) (int, int, void *)) dlsym (REAL_LIBC, "ioctl");
 279
 280         va_start (args, request);
 281         argp = va_arg (args, void *);
 282         va_end (args);
 283
 284         if (fd == windrvrfd) {
 285                 parse_wdioctlreq(argp, request);
 286
 287                 if ((ret = do_wdioctl(request, argp)))
 288                         ret = (*func) (fd, request, argp);
 289         } else {
 290                 ret = (*func) (fd, request, argp);
 291         }
 292
 293         if (fd == windrvrfd) {
 294                 parse_wdioctlans(argp, request, ret);
 295         }
 296         return ret;
 297 }
 298
 299 #if 0
 300 void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
 301 {
 302         static void* (*func) (void *, size_t, int, int, int, off_t) = NULL;
 303         void *ret;
 304
 305         if (!func)
 306                 func = (void* (*) (void *, size_t, int, int, int, off_t)) dlsym (REAL_LIBC, "mmap");
 307
 308         ret = (*func) (start, length, prot, flags, fd, offset);
 309         fprintf(stderr,"MMAP: %x, %d, %d, %d, %d, %d -> %x\n", (unsigned int)start, length, prot, flags, fd, offset, (unsigned int)ret);
 310         mmapped = ret;
 311         mmapplen = length;
 312
 313         return ret;
 314 }
 315
 316 void *mmap64(void *start, size_t length, int prot, int flags, int fd, off64_t offset)
 317 {
 318         static void* (*func) (void *, size_t, int, int, int, off64_t) = NULL;
 319         void *ret;
 320
 321         if (!func)
 322                 func = (void* (*) (void *, size_t, int, int, int, off64_t)) dlsym (REAL_LIBC, "mmap64");
 323
 324         ret = (*func) (start, length, prot, flags, fd, offset);
 325         fprintf(stderr,"MMAP64: %x, %d, %d, %d, %d, %lld -> %x\n", (unsigned int)start, length, prot, flags, fd, offset, (unsigned int)ret);
 326         mmapped = ret;
 327         mmapplen = length;
 328
 329         return ret;
 330 }
 331
 332 void *mmap2(void *start, size_t length, int prot, int flags, int fd, off_t pgoffset)
 333 {
 334         static void* (*func) (void *, size_t, int, int, int, off_t) = NULL;
 335         void *ret;
 336
 337         if (!func)
 338                 func = (void* (*) (void *, size_t, int, int, int, off_t)) dlsym (REAL_LIBC, "mmap2");
 339
 340         ret = (*func) (start, length, prot, flags, fd, pgoffset);
 341         fprintf(stderr,"MMAP2: %x, %d, %d, %d, %d, %d -> %x\n", (unsigned int)start, length, prot, flags, fd, pgoffset, (unsigned int)ret);
 342         mmapped = ret;
 343         mmapplen = length;
 344
 345         return ret;
 346 }
 347
 348 void *malloc(size_t size)
 349 {
 350         static void* (*func) (size_t) = NULL;
 351         void *ret;
 352
 353         if (!func)
 354                 func = (void* (*) (size_t)) dlsym(REAL_LIBC, "malloc");
 355
 356         ret = (*func) (size);
 357
 358         //fprintf(stderr,"MALLOC: %d -> %x\n", size, (unsigned int) ret);
 359
 360         return ret;
 361 }
 362 #endif
 363
 364
 365 #endif