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 static int (*ioctl_func) (int, int, void *) = NULL;
  24 static int windrvrfd = 0;
  25
  26 void hexdump(unsigned char *buf, int len);
  27 void diff(unsigned char *buf1, unsigned char *buf2, int len);
  28
  29 int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
  30         struct header_struct* wdheader = (struct header_struct*)wdioctl;
  31         struct version_struct *version;
  32         int ret = 0;
  33
  34         if (wdheader->magic != MAGIC) {
  35                 fprintf(stderr,"!!!ERROR: magic header does not match!!!\n");
  36                 return (*ioctl_func) (fd, request, wdioctl);
  37         }
  38
  39         switch(request) {
  40                 case VERSION:
  41                         version = (struct version_struct*)(wdheader->data);
  42                         strcpy(version->version, "WinDriver no more");
  43                         version->versionul = 999;
  44                         fprintf(stderr,"faking VERSION\n");
  45                         break;
  46
  47                 case LICENSE:
  48                         fprintf(stderr,"faking LICENSE\n");
  49                         break;
  50
  51                 case CARD_REGISTER:
  52                         {
  53                                 //struct card_register* cr = (struct card_register*)(wdheader->data);
  54                                 /* Todo: LPT-Port already in use */
  55                         }
  56                         fprintf(stderr,"faking CARD_REGISTER\n");
  57                         break;
  58
  59                 case USB_TRANSFER:
  60                         fprintf(stderr,"in USB_TRANSFER");
  61                         {
  62                                 struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data);
  63
  64                                 fprintf(stderr," unique: %lu, pipe: %lu, read: %lu, options: %lx, size: %lu, timeout: %lx\n", ut->dwUniqueID, ut->dwPipeNum, ut->fRead, ut->dwOptions, ut->dwBufferSize, ut->dwTimeout);
  65                                 fprintf(stderr,"setup packet: ");
  66                                 hexdump(ut->SetupPacket, 8);
  67                                 fprintf(stderr,"\n");
  68                                 if (!ut->fRead && ut->dwBufferSize)
  69                                 {
  70                                         hexdump(ut->pBuffer, ut->dwBufferSize);
  71                                         fprintf(stderr,"\n");
  72                                 }
  73
  74                                 ret = (*ioctl_func) (fd, request, wdioctl);
  75
  76                                 fprintf(stderr,"Transferred: %lu (%s)\n",ut->dwBytesTransferred, (ut->fRead?"read":"write"));
  77                                 if (ut->fRead && ut->dwBytesTransferred)
  78                                 {
  79                                         fprintf(stderr,"Read: ");
  80                                         hexdump(ut->pBuffer, ut->dwBytesTransferred);
  81                                 }
  82                                 fprintf(stderr,"\n");
  83                         }
  84                         break;
  85
  86                 case INT_ENABLE:
  87                         fprintf(stderr,"faking INT_ENABLE");
  88                         {
  89                                 struct interrupt *it = (struct interrupt*)(wdheader->data);
  90
  91                                 fprintf(stderr," Handle: %lu, Options: %lx, ncmds: %lu\n", it->hInterrupt, it->dwOptions, it->dwCmds);
  92
  93                                 it->fEnableOk = 1;
  94                                 //ret = (*ioctl_func) (fd, request, wdioctl);
  95                         }
  96
  97                         break;
  98
  99                 case INT_DISABLE:
 100                         fprintf(stderr,"INT_DISABLE\n");
 101                         {
 102                                 struct interrupt *it = (struct interrupt*)(wdheader->data);
 103
 104                                 fprintf(stderr," Handle: %lu, Options: %lx, ncmds: %lu\n", it->hInterrupt, it->dwOptions, it->dwCmds);
 105
 106                                 hexdump(wdheader->data, wdheader->size);
 107                                 //it->dwCounter = 0;
 108                                 //it->fStopped = 1;
 109                                 ret = (*ioctl_func) (fd, request, wdioctl);
 110                                 fprintf(stderr,"\n\n");
 111                                 hexdump(wdheader->data, wdheader->size);
 112                                 fprintf(stderr,"\n");
 113                         }
 114                         break;
 115
 116                 case USB_SET_INTERFACE:
 117                         fprintf(stderr,"USB_SET_INTERFACE\n");
 118                         {
 119                                 struct usb_set_interface *usi = (struct usb_set_interface*)(wdheader->data);
 120
 121                                 fprintf(stderr,"unique: %lu, interfacenum: %lu, alternatesetting: %lu, options: %lx\n", usi->dwUniqueID, usi->dwInterfaceNum, usi->dwAlternateSetting, usi->dwOptions);
 122                                 ret = (*ioctl_func) (fd, request, wdioctl);
 123                         }
 124                         break;
 125
 126                 case USB_GET_DEVICE_DATA:
 127                         fprintf(stderr,"USB_GET_DEVICE_DATA\n");
 128                         {
 129                                 struct usb_get_device_data *ugdd = (struct usb_get_device_data*)(wdheader->data);
 130                                 int pSize;
 131
 132                                 fprintf(stderr, "uniqe: %lu, bytes: %lu, options: %lx\n", ugdd->dwUniqueID, ugdd->dwBytes, ugdd->dwOptions);
 133                                 pSize = ugdd->dwBytes;
 134                                 ret = (*ioctl_func) (fd, request, wdioctl);
 135                                 if (pSize) {
 136                                         hexdump(ugdd->pBuf, pSize);
 137                                         fprintf(stderr, "\n");
 138                                 }
 139                         }
 140                         break;
 141
 142                 case TRANSFER:
 143                         fprintf(stderr,"TRANSFER\n");
 144                         ret = (*ioctl_func) (fd, request, wdioctl);
 145                         break;
 146
 147                 case EVENT_UNREGISTER:
 148                         fprintf(stderr,"EVENT_UNREGISTER\n");
 149                         ret = (*ioctl_func) (fd, request, wdioctl);
 150                         break;
 151
 152                 case INT_WAIT:
 153                         fprintf(stderr,"INT_WAIT\n");
 154                         ret = (*ioctl_func) (fd, request, wdioctl);
 155                         break;
 156
 157                 case CARD_UNREGISTER:
 158                         fprintf(stderr,"CARD_UNREGISTER\n");
 159                         ret = (*ioctl_func) (fd, request, wdioctl);
 160                         break;
 161
 162                 case EVENT_PULL:
 163                         fprintf(stderr,"EVENT_PULL\n");
 164                         ret = (*ioctl_func) (fd, request, wdioctl);
 165                         break;
 166
 167                 case EVENT_REGISTER:
 168                         fprintf(stderr,"EVENT_REGISTER\n");
 169                         ret = (*ioctl_func) (fd, request, wdioctl);
 170                         break;
 171
 172                 default:
 173                         ret = (*ioctl_func) (fd, request, wdioctl);
 174         }
 175
 176         return ret;
 177 }
 178
 179
 180 typedef int (*open_funcptr_t) (const char *, int, mode_t);
 181
 182 int open (const char *pathname, int flags, ...)
 183 {
 184         static open_funcptr_t func = NULL;
 185         mode_t mode = 0;
 186         va_list args;
 187         int fd;
 188
 189         if (!func)
 190                 func = (open_funcptr_t) dlsym (REAL_LIBC, "open");
 191
 192         if (flags & O_CREAT) {
 193                 va_start(args, flags);
 194                 mode = va_arg(args, mode_t);
 195                 va_end(args);
 196         }
 197
 198         fd = (*func) (pathname, flags, mode);
 199
 200         if (!strcmp (pathname, "/dev/windrvr6")) {
 201                 fprintf(stderr,"opening windrvr6\n");
 202                 windrvrfd = fd;
 203         }
 204
 205         return fd;
 206 }
 207
 208 void diff(unsigned char *buf1, unsigned char *buf2, int len) {
 209         int i;
 210
 211         for(i=0; i<len; i++) {
 212                 if (buf1[i] != buf2[i]) {
 213                         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]:'.'));
 214                 }
 215         }
 216 }
 217
 218 void hexdump(unsigned char *buf, int len) {
 219         int i;
 220
 221         for(i=0; i<len; i++) {
 222                 fprintf(stderr,"%02x ", buf[i]);
 223                 if ((i % 16) == 15)
 224                         fprintf(stderr,"\n");
 225         }
 226 }
 227
 228 int ioctl(int fd, int request, ...)
 229 {
 230         va_list args;
 231         void *argp;
 232         int ret;
 233
 234         if (!ioctl_func)
 235                 ioctl_func = (int (*) (int, int, void *)) dlsym (REAL_LIBC, "ioctl");
 236
 237         va_start (args, request);
 238         argp = va_arg (args, void *);
 239         va_end (args);
 240
 241         if (fd == windrvrfd)
 242                 ret = do_wdioctl(fd, request, argp);
 243         else
 244                 ret = (*ioctl_func) (fd, request, argp);
 245
 246         return ret;
 247 }
 248
 249 #if 0
 250 void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
 251 {
 252         static void* (*func) (void *, size_t, int, int, int, off_t) = NULL;
 253         void *ret;
 254
 255         if (!func)
 256                 func = (void* (*) (void *, size_t, int, int, int, off_t)) dlsym (REAL_LIBC, "mmap");
 257
 258         ret = (*func) (start, length, prot, flags, fd, offset);
 259         fprintf(stderr,"MMAP: %x, %d, %d, %d, %d, %d -> %x\n", (unsigned int)start, length, prot, flags, fd, offset, (unsigned int)ret);
 260         mmapped = ret;
 261         mmapplen = length;
 262
 263         return ret;
 264 }
 265
 266 void *mmap64(void *start, size_t length, int prot, int flags, int fd, off64_t offset)
 267 {
 268         static void* (*func) (void *, size_t, int, int, int, off64_t) = NULL;
 269         void *ret;
 270
 271         if (!func)
 272                 func = (void* (*) (void *, size_t, int, int, int, off64_t)) dlsym (REAL_LIBC, "mmap64");
 273
 274         ret = (*func) (start, length, prot, flags, fd, offset);
 275         fprintf(stderr,"MMAP64: %x, %d, %d, %d, %d, %lld -> %x\n", (unsigned int)start, length, prot, flags, fd, offset, (unsigned int)ret);
 276         mmapped = ret;
 277         mmapplen = length;
 278
 279         return ret;
 280 }
 281
 282 void *mmap2(void *start, size_t length, int prot, int flags, int fd, off_t pgoffset)
 283 {
 284         static void* (*func) (void *, size_t, int, int, int, off_t) = NULL;
 285         void *ret;
 286
 287         if (!func)
 288                 func = (void* (*) (void *, size_t, int, int, int, off_t)) dlsym (REAL_LIBC, "mmap2");
 289
 290         ret = (*func) (start, length, prot, flags, fd, pgoffset);
 291         fprintf(stderr,"MMAP2: %x, %d, %d, %d, %d, %d -> %x\n", (unsigned int)start, length, prot, flags, fd, pgoffset, (unsigned int)ret);
 292         mmapped = ret;
 293         mmapplen = length;
 294
 295         return ret;
 296 }
 297
 298 void *malloc(size_t size)
 299 {
 300         static void* (*func) (size_t) = NULL;
 301         void *ret;
 302
 303         if (!func)
 304                 func = (void* (*) (size_t)) dlsym(REAL_LIBC, "malloc");
 305
 306         ret = (*func) (size);
 307
 308         //fprintf(stderr,"MALLOC: %d -> %x\n", size, (unsigned int) ret);
 309
 310         return ret;
 311 }
 312 #endif
 313
 314
 315 #endif