granicus.if.org Git - strace/blob - sock.c

   1 /*
   2  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include "defs.h"
  29 #include <sys/socket.h>
  30 #include <linux/sockios.h>
  31 #include <arpa/inet.h>
  32 #if defined(ALPHA) || defined(SH) || defined(SH64)
  33 # if defined(HAVE_SYS_IOCTL_H)
  34 #  include <sys/ioctl.h>
  35 # elif defined(HAVE_IOCTLS_H)
  36 #  include <ioctls.h>
  37 # endif
  38 #endif
  39 #include <net/if.h>
  40
  41 #include "xlat/iffflags.h"
  42
  43 static void
  44 print_ifreq_addr(struct tcb *tcp, const struct ifreq *ifr, const long addr)
  45 {
  46         tprintf("{");
  47         printxval(addrfams, ifr->ifr_addr.sa_family, "AF_???");
  48         tprints(", ");
  49         if (ifr->ifr_addr.sa_family == AF_INET) {
  50                 const struct sockaddr_in *sinp =
  51                         (struct sockaddr_in *) &ifr->ifr_addr;
  52                 tprintf("inet_addr(\"%s\")", inet_ntoa(sinp->sin_addr));
  53         } else
  54                 printstr(tcp, addr + offsetof(struct ifreq, ifr_addr.sa_data),
  55                          sizeof(ifr->ifr_addr.sa_data));
  56         tprints("}");
  57 }
  58
  59 static void
  60 print_ifname(const char *ifname)
  61 {
  62         print_quoted_string(ifname, IFNAMSIZ + 1, QUOTE_0_TERMINATED);
  63 }
  64
  65 static void
  66 print_ifreq(struct tcb *tcp, const unsigned int code, const long arg,
  67             const struct ifreq *ifr)
  68 {
  69         switch (code) {
  70         case SIOCSIFADDR:
  71         case SIOCGIFADDR:
  72                 tprints("ifr_addr=");
  73                 print_ifreq_addr(tcp, ifr, arg);
  74                 break;
  75         case SIOCSIFDSTADDR:
  76         case SIOCGIFDSTADDR:
  77                 tprints("ifr_dstaddr=");
  78                 print_ifreq_addr(tcp, ifr, arg);
  79                 break;
  80         case SIOCSIFBRDADDR:
  81         case SIOCGIFBRDADDR:
  82                 tprints("ifr_broadaddr=");
  83                 print_ifreq_addr(tcp, ifr, arg);
  84                 break;
  85         case SIOCSIFNETMASK:
  86         case SIOCGIFNETMASK:
  87                 tprints("ifr_netmask=");
  88                 print_ifreq_addr(tcp, ifr, arg);
  89                 break;
  90         case SIOCSIFHWADDR:
  91         case SIOCGIFHWADDR: {
  92                 /* XXX Are there other hardware addresses
  93                    than 6-byte MACs?  */
  94                 const unsigned char *bytes =
  95                         (unsigned char *) &ifr->ifr_hwaddr.sa_data;
  96                 tprintf("ifr_hwaddr=%02x:%02x:%02x:%02x:%02x:%02x",
  97                         bytes[0], bytes[1], bytes[2],
  98                         bytes[3], bytes[4], bytes[5]);
  99                 break;
 100         }
 101         case SIOCSIFFLAGS:
 102         case SIOCGIFFLAGS:
 103                 tprints("ifr_flags=");
 104                 printflags(iffflags, ifr->ifr_flags, "IFF_???");
 105                 break;
 106         case SIOCSIFMETRIC:
 107         case SIOCGIFMETRIC:
 108                 tprintf("ifr_metric=%d", ifr->ifr_metric);
 109                 break;
 110         case SIOCSIFMTU:
 111         case SIOCGIFMTU:
 112                 tprintf("ifr_mtu=%d", ifr->ifr_mtu);
 113                 break;
 114         case SIOCSIFSLAVE:
 115         case SIOCGIFSLAVE:
 116                 tprints("ifr_slave=");
 117                 print_ifname(ifr->ifr_slave);
 118                 break;
 119         case SIOCSIFTXQLEN:
 120         case SIOCGIFTXQLEN:
 121                 tprintf("ifr_qlen=%d", ifr->ifr_qlen);
 122                 break;
 123         case SIOCSIFMAP:
 124         case SIOCGIFMAP:
 125                 tprintf("ifr_map={mem_start=%#lx, "
 126                         "mem_end=%#lx, base_addr=%#x, "
 127                         "irq=%u, dma=%u, port=%u}",
 128                         ifr->ifr_map.mem_start,
 129                         ifr->ifr_map.mem_end,
 130                         (unsigned) ifr->ifr_map.base_addr,
 131                         (unsigned) ifr->ifr_map.irq,
 132                         (unsigned) ifr->ifr_map.dma,
 133                         (unsigned) ifr->ifr_map.port);
 134                 break;
 135         }
 136 }
 137
 138 static unsigned int
 139 print_ifc_len(int len)
 140 {
 141         const unsigned int n = (unsigned int) len / sizeof(struct ifreq);
 142
 143         if (len < 0 || n * sizeof(struct ifreq) != (unsigned int) len)
 144                 tprintf("%d", len);
 145         else
 146                 tprintf("%u * sizeof(struct ifreq)", n);
 147
 148         return n;
 149 }
 150
 151 static int
 152 decode_ifconf(struct tcb *tcp, const long addr)
 153 {
 154         struct ifconf ifc;
 155
 156         if (entering(tcp)) {
 157                 tprints(", ");
 158                 if (umove_or_printaddr(tcp, addr, &ifc))
 159                         return RVAL_DECODED | 1;
 160                 if (ifc.ifc_buf) {
 161                         tprints("{");
 162                         print_ifc_len(ifc.ifc_len);
 163                 }
 164                 return 1;
 165         }
 166
 167         if (syserror(tcp) || umove(tcp, addr, &ifc) < 0) {
 168                 if (ifc.ifc_buf)
 169                         tprints("}");
 170                 else
 171                         printaddr(addr);
 172                 return RVAL_DECODED | 1;
 173         }
 174
 175         if (!ifc.ifc_buf) {
 176                 tprints("{");
 177                 print_ifc_len(ifc.ifc_len);
 178                 tprints(", NULL}");
 179                 return RVAL_DECODED | 1;
 180         }
 181
 182         tprints(" => ");
 183         const unsigned int nifra = print_ifc_len(ifc.ifc_len);
 184         if (!nifra) {
 185                 tprints("}");
 186                 return RVAL_DECODED | 1;
 187         }
 188
 189         struct ifreq ifra[nifra > max_strlen ? max_strlen : nifra];
 190         tprints(", ");
 191         if (umove_or_printaddr(tcp, (unsigned long) ifc.ifc_buf, &ifra)) {
 192                 tprints("}");
 193                 return RVAL_DECODED | 1;
 194         }
 195
 196         tprints("[");
 197         unsigned int i;
 198         for (i = 0; i < ARRAY_SIZE(ifra); ++i) {
 199                 if (i > 0)
 200                         tprints(", ");
 201                 tprints("{ifr_name=");
 202                 print_ifname(ifra[i].ifr_name);
 203                 tprints(", ");
 204                 if (verbose(tcp)) {
 205                         tprints("ifr_addr=");
 206                         print_ifreq_addr(tcp, &ifra[i],
 207                                          addr + i * sizeof(ifra[0]));
 208                 } else
 209                         tprints("...");
 210                 tprints("}");
 211         }
 212         if (i < nifra)
 213                 tprints(", ...");
 214         tprints("]}");
 215
 216         return RVAL_DECODED | 1;
 217 }
 218
 219 int
 220 sock_ioctl(struct tcb *tcp, const unsigned int code, const long arg)
 221 {
 222         struct ifreq ifr;
 223
 224         switch (code) {
 225         case SIOCGIFCONF:
 226                 return decode_ifconf(tcp, arg);
 227
 228 #ifdef SIOCBRADDBR
 229         case SIOCBRADDBR:
 230         case SIOCBRDELBR:
 231                 tprints(", ");
 232                 printstr(tcp, arg, -1);
 233                 break;
 234 #endif
 235
 236 #ifdef FIOSETOWN
 237         case FIOSETOWN:
 238 #endif
 239 #ifdef SIOCSPGRP
 240         case SIOCSPGRP:
 241 #endif
 242                 tprints(", ");
 243                 printnum_int(tcp, arg, "%d");
 244                 break;
 245
 246 #ifdef FIOGETOWN
 247         case FIOGETOWN:
 248 #endif
 249 #ifdef SIOCGPGRP
 250         case SIOCGPGRP:
 251 #endif
 252 #ifdef SIOCATMARK
 253         case SIOCATMARK:
 254 #endif
 255                 if (entering(tcp))
 256                         return 0;
 257                 tprints(", ");
 258                 printnum_int(tcp, arg, "%d");
 259                 break;
 260
 261 #ifdef SIOCBRADDIF
 262         case SIOCBRADDIF:
 263 #endif
 264 #ifdef SIOCBRDELIF
 265         case SIOCBRDELIF:
 266 #endif
 267                 /* no arguments */
 268                 break;
 269
 270         case SIOCSIFNAME:
 271         case SIOCSIFADDR:
 272         case SIOCSIFDSTADDR:
 273         case SIOCSIFBRDADDR:
 274         case SIOCSIFNETMASK:
 275         case SIOCSIFFLAGS:
 276         case SIOCSIFMETRIC:
 277         case SIOCSIFMTU:
 278         case SIOCSIFSLAVE:
 279         case SIOCSIFHWADDR:
 280         case SIOCSIFTXQLEN:
 281         case SIOCSIFMAP:
 282                 tprints(", ");
 283                 if (umove_or_printaddr(tcp, arg, &ifr))
 284                         break;
 285
 286                 tprints("{ifr_name=");
 287                 print_ifname(ifr.ifr_name);
 288                 tprints(", ");
 289                 if (code == SIOCSIFNAME) {
 290                         tprints("ifr_newname=");
 291                         print_ifname(ifr.ifr_newname);
 292                 } else {
 293                         print_ifreq(tcp, code, arg, &ifr);
 294                 }
 295                 tprints("}");
 296                 break;
 297
 298         case SIOCGIFNAME:
 299         case SIOCGIFINDEX:
 300         case SIOCGIFADDR:
 301         case SIOCGIFDSTADDR:
 302         case SIOCGIFBRDADDR:
 303         case SIOCGIFNETMASK:
 304         case SIOCGIFFLAGS:
 305         case SIOCGIFMETRIC:
 306         case SIOCGIFMTU:
 307         case SIOCGIFSLAVE:
 308         case SIOCGIFHWADDR:
 309         case SIOCGIFTXQLEN:
 310         case SIOCGIFMAP:
 311                 if (entering(tcp)) {
 312                         tprints(", ");
 313                         if (umove_or_printaddr(tcp, arg, &ifr))
 314                                 break;
 315
 316                         if (SIOCGIFNAME == code) {
 317                                 tprintf("{ifr_index=%d", ifr.ifr_ifindex);
 318                         } else {
 319                                 tprints("{ifr_name=");
 320                                 print_ifname(ifr.ifr_name);
 321                         }
 322                         return 1;
 323                 } else {
 324                         if (syserror(tcp)) {
 325                                 tprints("}");
 326                                 break;
 327                         }
 328
 329                         tprints(", ");
 330                         if (umove(tcp, arg, &ifr) < 0) {
 331                                 tprints("???}");
 332                                 break;
 333                         }
 334
 335                         if (SIOCGIFNAME == code) {
 336                                 tprints("ifr_name=");
 337                                 print_ifname(ifr.ifr_name);
 338                         } else {
 339                                 print_ifreq(tcp, code, arg, &ifr);
 340                         }
 341                         tprints("}");
 342                         break;
 343                 }
 344
 345         default:
 346                 return RVAL_DECODED;
 347         }
 348
 349         return RVAL_DECODED | 1;
 350 }
 351
 352 SYS_FUNC(socketcall)
 353 {
 354         return printargs(tcp);
 355 }