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 static int (*ioctl_func) (int, int, void *) = NULL;
  26
  27 void hexdump(unsigned char *buf, int len);
  28 void diff(unsigned char *buf1, unsigned char *buf2, int len);
  29
  30 int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
  31         struct header_struct* wdheader = (struct header_struct*)wdioctl;
  32         struct version_struct *version;
  33         int ret = 0;
  34
  35         if (wdheader->magic != MAGIC) {
  36                 fprintf(stderr,"!!!ERROR: Header does not match!!!\n");
  37                 return;
  38         }
  39
  40         switch(request) {
  41                 case VERSION:
  42                         version = (struct version_struct*)(wdheader->data);
  43                         strcpy(version->version, "WinDriver no more");
  44                         version->versionul = 999;
  45                         fprintf(stderr,"faking VERSION\n");
  46                         break;
  47                 case CARD_REGISTER:
  48                         {
  49                                 struct card_register* cr = (struct card_register*)(wdheader->data);
  50                                 /* Todo: LPT-Port already in use */
  51                         }
  52                         fprintf(stderr,"faking CARD_REGISTER\n");
  53                         break;
  54                 case USB_TRANSFER:
  55                         fprintf(stderr,"in USB_TRANSFER");
  56                         {
  57                                 struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data);
  58
  59                                 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);
  60                                 fprintf(stderr,"setup packet: ");
  61                                 hexdump(ut->SetupPacket, 8);
  62                                 fprintf(stderr,"\n");
  63                                 if (!ut->fRead && ut->dwBufferSize)
  64                                 {
  65                                         hexdump(ut->pBuffer, ut->dwBufferSize);
  66                                         fprintf(stderr,"\n");
  67                                 }
  68
  69                                 ret = (*ioctl_func) (fd, request, wdioctl);
  70
  71                                 fprintf(stderr,"Transferred: %d (%s)\n",ut->dwBytesTransferred, (ut->fRead?"read":"write"));
  72                                 if (ut->fRead && ut->dwBytesTransferred)
  73                                 {
  74                                         fprintf(stderr,"Read: ");
  75                                         hexdump(ut->pBuffer, ut->dwBytesTransferred);
  76                                 }
  77                                 fprintf(stderr,"\n");
  78                         }
  79                         break;
  80                 case INT_ENABLE:
  81                         fprintf(stderr,"faking INT_ENABLE");
  82                         {
  83                                 struct interrupt *it = (struct interrupt*)(wdheader->data);
  84
  85                                 fprintf(stderr," Handle: %d, Options: %x, ncmds: %d\n", it->hInterrupt, it->dwOptions, it->dwCmds);
  86
  87                                 it->fEnableOk = 1;
  88                                 //ret = (*ioctl_func) (fd, request, wdioctl);
  89                         }
  90
  91                         break;
  92
  93                 case INT_DISABLE:
  94                         fprintf(stderr,"INT_DISABLE\n");
  95                         {
  96                                 struct interrupt *it = (struct interrupt*)(wdheader->data);
  97
  98                                 fprintf(stderr," Handle: %d, Options: %x, ncmds: %d\n", it->hInterrupt, it->dwOptions, it->dwCmds);
  99
 100                                 hexdump(wdheader->data, wdheader->size);
 101                                 //it->dwCounter = 0;
 102                                 //it->fStopped = 1;
 103                                 ret = (*ioctl_func) (fd, request, wdioctl);
 104                                 fprintf(stderr,"\n\n");
 105                                 hexdump(wdheader->data, wdheader->size);
 106                                 fprintf(stderr,"\n");
 107                         }
 108                         break;
 109
 110                 case USB_SET_INTERFACE:
 111                         fprintf(stderr,"USB_SET_INTERFACE\n");
 112                         {
 113                                 struct usb_set_interface *usi = (struct usb_set_interface*)(wdheader->data);
 114
 115                                 fprintf(stderr,"unique: %d, interfacenum: %d, alternatesetting: %d, options: %x\n", usi->dwUniqueID, usi->dwInterfaceNum, usi->dwAlternateSetting, usi->dwOptions);
 116                                 ret = (*ioctl_func) (fd, request, wdioctl);
 117                         }
 118                         break;
 119
 120                 case USB_GET_DEVICE_DATA:
 121                         fprintf(stderr,"USB_GET_DEVICE_DATA\n");
 122                         {
 123                                 struct usb_get_device_data *ugdd = (struct usb_get_device_data*)(wdheader->data);
 124                                 int pSize;
 125
 126                                 fprintf(stderr, "uniqe: %d, bytes: %d, options: %x\n", ugdd->dwUniqueID, ugdd->dwBytes, ugdd->dwOptions);
 127                                 pSize = ugdd->dwBytes;
 128                                 ret = (*ioctl_func) (fd, request, wdioctl);
 129                                 if (pSize) {
 130                                         hexdump(ugdd->pBuf, pSize);
 131                                         fprintf(stderr, "\n");
 132                                 }
 133                         }
 134                         break;
 135
 136                 case LICENSE:
 137                         fprintf(stderr,"faking LICENSE\n");
 138                         break;
 139
 140                 case TRANSFER:
 141                         fprintf(stderr,"TRANSFER\n");
 142                         ret = (*ioctl_func) (fd, request, wdioctl);
 143                         break;
 144
 145                 case EVENT_UNREGISTER:
 146                         fprintf(stderr,"EVENT_UNREGISTER\n");
 147                         ret = (*ioctl_func) (fd, request, wdioctl);
 148                         break;
 149
 150                 case INT_WAIT:
 151                         fprintf(stderr,"INT_WAIT\n");
 152                         ret = (*ioctl_func) (fd, request, wdioctl);
 153                         break;
 154
 155                 case CARD_UNREGISTER:
 156                         fprintf(stderr,"CARD_UNREGISTER\n");
 157                         ret = (*ioctl_func) (fd, request, wdioctl);
 158                         break;
 159
 160                 case EVENT_PULL:
 161                         fprintf(stderr,"EVENT_PULL\n");
 162                         ret = (*ioctl_func) (fd, request, wdioctl);
 163                         break;
 164
 165                 case EVENT_REGISTER:
 166                         fprintf(stderr,"EVENT_REGISTER\n");
 167                         ret = (*ioctl_func) (fd, request, wdioctl);
 168                         break;
 169
 170                 default:
 171                         ret = (*ioctl_func) (fd, request, wdioctl);
 172         }
 173
 174         return ret;
 175 }
 176
 177
 178 typedef int (*open_funcptr_t) (const char *, int, mode_t);
 179
 180 static windrvrfd = 0;
 181 static void* mmapped = NULL;
 182 static size_t mmapplen = 0;
 183
 184 int open (const char *pathname, int flags, ...)
 185 {
 186         static open_funcptr_t func = NULL;
 187         mode_t mode = 0;
 188         va_list args;
 189         int fd;
 190
 191         if (!func)
 192                 func = (open_funcptr_t) dlsym (REAL_LIBC, "open");
 193
 194         if (flags & O_CREAT) {
 195                 va_start(args, flags);
 196                 mode = va_arg(args, mode_t);
 197                 va_end(args);
 198         }
 199
 200         fd = (*func) (pathname, flags, mode);
 201
 202         if (!strcmp (pathname, "/dev/windrvr6")) {
 203                 fprintf(stderr,"opening windrvr6\n");
 204                 windrvrfd = fd;
 205         }
 206
 207         return fd;
 208 }
 209
 210 void diff(unsigned char *buf1, unsigned char *buf2, int len) {
 211         int i;
 212
 213         for(i=0; i<len; i++) {
 214                 if (buf1[i] != buf2[i]) {
 215                         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]:'.'));
 216                 }
 217         }
 218 }
 219
 220 void hexdump(unsigned char *buf, int len) {
 221         int i;
 222
 223         for(i=0; i<len; i++) {
 224                 fprintf(stderr,"%02x ", buf[i]);
 225                 if ((i % 16) == 15)
 226                         fprintf(stderr,"\n");
 227         }
 228 }
 229
 230 int ioctl(int fd, int request, ...)
 231 {
 232         va_list args;
 233         void *argp;
 234         int ret;
 235
 236         if (!ioctl_func)
 237                 ioctl_func = (int (*) (int, int, void *)) dlsym (REAL_LIBC, "ioctl");
 238
 239         va_start (args, request);
 240         argp = va_arg (args, void *);
 241         va_end (args);
 242
 243         if (fd == windrvrfd)
 244                 ret = do_wdioctl(fd, request, argp);
 245         else
 246                 ret = (*ioctl_func) (fd, request, argp);
 247
 248         return ret;
 249 }
 250
 251 #if 0
 252 void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
 253 {
 254         static void* (*func) (void *, size_t, int, int, int, off_t) = NULL;
 255         void *ret;
 256
 257         if (!func)
 258                 func = (void* (*) (void *, size_t, int, int, int, off_t)) dlsym (REAL_LIBC, "mmap");
 259
 260         ret = (*func) (start, length, prot, flags, fd, offset);
 261         fprintf(stderr,"MMAP: %x, %d, %d, %d, %d, %d -> %x\n", (unsigned int)start, length, prot, flags, fd, offset, (unsigned int)ret);
 262         mmapped = ret;
 263         mmapplen = length;
 264
 265         return ret;
 266 }
 267
 268 void *mmap64(void *start, size_t length, int prot, int flags, int fd, off64_t offset)
 269 {
 270         static void* (*func) (void *, size_t, int, int, int, off64_t) = NULL;
 271         void *ret;
 272
 273         if (!func)
 274                 func = (void* (*) (void *, size_t, int, int, int, off64_t)) dlsym (REAL_LIBC, "mmap64");
 275
 276         ret = (*func) (start, length, prot, flags, fd, offset);
 277         fprintf(stderr,"MMAP64: %x, %d, %d, %d, %d, %lld -> %x\n", (unsigned int)start, length, prot, flags, fd, offset, (unsigned int)ret);
 278         mmapped = ret;
 279         mmapplen = length;
 280
 281         return ret;
 282 }
 283
 284 void *mmap2(void *start, size_t length, int prot, int flags, int fd, off_t pgoffset)
 285 {
 286         static void* (*func) (void *, size_t, int, int, int, off_t) = NULL;
 287         void *ret;
 288
 289         if (!func)
 290                 func = (void* (*) (void *, size_t, int, int, int, off_t)) dlsym (REAL_LIBC, "mmap2");
 291
 292         ret = (*func) (start, length, prot, flags, fd, pgoffset);
 293         fprintf(stderr,"MMAP2: %x, %d, %d, %d, %d, %d -> %x\n", (unsigned int)start, length, prot, flags, fd, pgoffset, (unsigned int)ret);
 294         mmapped = ret;
 295         mmapplen = length;
 296
 297         return ret;
 298 }
 299
 300 void *malloc(size_t size)
 301 {
 302         static void* (*func) (size_t) = NULL;
 303         void *ret;
 304
 305         if (!func)
 306                 func = (void* (*) (size_t)) dlsym(REAL_LIBC, "malloc");
 307
 308         ret = (*func) (size);
 309
 310         //fprintf(stderr,"MALLOC: %d -> %x\n", size, (unsigned int) ret);
 311
 312         return ret;
 313 }
 314 #endif
 315
 316
 317 #endif