src/native_client/src/trusted/desc/nacl_makeboundsock.c

   1 /*
   2  * Copyright 2008 The Native Client Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  */
   6
   7 #include "native_client/src/include/portability.h"
   8 #include "native_client/src/shared/platform/nacl_global_secure_random.h"
   9 #include "native_client/src/shared/platform/nacl_log.h"
  10 #include "native_client/src/trusted/desc/nacl_desc_base.h"
  11 #include "native_client/src/trusted/desc/nacl_desc_conn_cap.h"
  12 #include "native_client/src/trusted/desc/nacl_desc_imc_bound_desc.h"
  13 #include "native_client/src/trusted/service_runtime/include/sys/errno.h"
  14
  15
  16 int32_t NaClCommonDescMakeBoundSock(struct NaClDesc *pair[2]) {
  17   int32_t                     retval;
  18   struct NaClSocketAddress    sa;
  19   struct NaClDescConnCap      *ccp;
  20   NaClHandle                  h;
  21   struct NaClDescImcBoundDesc *idp;
  22
  23   retval = -NACL_ABI_ENOMEM;
  24   ccp = NULL;
  25   idp = NULL;
  26   h = NACL_INVALID_HANDLE;
  27   /*
  28    * create NaClDescConnCap object, invoke NaClBoundSocket, create
  29    * an NaClDescImcDesc object.  put both into open file table.
  30    */
  31   ccp = malloc(sizeof *ccp);
  32   if (NULL == ccp) {
  33     goto cleanup;
  34   }
  35   idp = malloc(sizeof *idp);
  36   if (NULL == idp) {
  37     goto cleanup;
  38   }
  39
  40   do {
  41     NaClGenerateRandomPath(&sa.path[0], NACL_PATH_MAX);
  42     h = NaClBoundSocket(&sa);
  43     NaClLog(3, "NaClCommonDescMakeBoundSock: sa: %s, h 0x%"NACL_PRIxPTR"\n",
  44             sa.path, (uintptr_t) h);
  45   } while (NACL_INVALID_HANDLE == h);
  46
  47   if (!NaClDescConnCapCtor(ccp, &sa)) {
  48     goto cleanup;
  49   }
  50
  51   if (!NaClDescImcBoundDescCtor(idp, h)) {
  52     NaClDescUnref((struct NaClDesc *) ccp);
  53     goto cleanup;
  54   }
  55   h = NACL_INVALID_HANDLE;  /* idp took ownership */
  56
  57   pair[0] = (struct NaClDesc *) idp;
  58   idp = NULL;
  59
  60   pair[1] = (struct NaClDesc *) ccp;
  61   ccp = NULL;
  62
  63   retval = 0;
  64
  65  cleanup:
  66   free(idp);
  67   free(ccp);
  68   if (NACL_INVALID_HANDLE != h) {
  69     (void) NaClClose(h);
  70   }
  71   return retval;
  72 }