not_well.c

gistfile1.c

50 static bool
   51 pack_str(struct whackpacker *wp, char **p)
   52 {
   53     const char *s = *p == NULL? "" : *p;    /* note: NULL becomes ""! */
   54     size_t len = strlen(s) + 1;
   55 
   56     if (wp->str_roof - wp->str_next < (ptrdiff_t)len)
   57     {
   58     return FALSE;   /* fishy: no end found */
   59     }
   60     else
   61     {
   62     strcpy((char *)wp->str_next, s);
   63     wp->str_next += len;
   64     *p = NULL;  /* don't send pointers on the wire! */
   65     return TRUE;
   66     }
   67 }
   68 

  106 err_t pack_whack_msg (struct whackpacker *wp)
  107 {
  108     err_t ugh = NULL;
  112     wp->str_next = wp->msg->string;
  113     wp->str_roof = &wp->msg->string[sizeof(wp->msg->string)];
  114 
  115     if (!pack_str(wp, &wp->msg->name)           /* string 1 */
  116     || !pack_str(wp, &wp->msg->left.id)     /* string 2 */
  117     || !pack_str(wp, &wp->msg->left.cert)   /* string 3 */
  118     || !pack_str(wp, &wp->msg->left.ca)     /* string 4 */
  119     || !pack_str(wp, &wp->msg->left.groups) /* string 5 */
  120     || !pack_str(wp, &wp->msg->left.updown) /* string 6 */
  121         || !pack_str(wp, &wp->msg->left.virt)    /* string 7 */
  122     || !pack_str(wp, &wp->msg->right.id)    /* string 8 */
  123         || !pack_str(wp, &wp->msg->right.cert)  /* string 9 */
  124         || !pack_str(wp, &wp->msg->right.ca)    /* string 10 */
  125         || !pack_str(wp, &wp->msg->right.groups)/* string 11 */
  126     || !pack_str(wp, &wp->msg->right.updown)/* string 12 */
  127         || !pack_str(wp, &wp->msg->right.virt)  /* string 13 */
  128     || !pack_str(wp, &wp->msg->keyid)       /* string 14 */
  129     || !pack_str(wp, &wp->msg->myid)        /* string 15 */
  130         || !pack_str(wp, &wp->msg->ike)         /* string 16 */
  131         || !pack_str(wp, &wp->msg->esp)         /* string 17 */
  132         || !pack_str(wp, &wp->msg->tpmeval)     /* string 18 */
  133         || !pack_str(wp, &wp->msg->left.xauth_name)    /* string 19 */
  134         || !pack_str(wp, &wp->msg->right.xauth_name)   /* string 20 */
  135         || !pack_str(wp, &wp->msg->connalias)   /* string 21 */
  136         || !pack_str(wp, &wp->msg->left.host_addr_name)    /* string 22 */
  137         || !pack_str(wp, &wp->msg->right.host_addr_name)   /* string 23 */
  138     || !pack_str(wp, &wp->msg->string1)                /* string 24 */
  139     || !pack_str(wp, &wp->msg->string2)                /* string 25 */
  140     || !pack_str(wp, &wp->msg->string3)                /* string 26 */
  141     || !pack_str(wp, &wp->msg->dnshostname) /* string 27 ? */
  142 #ifdef HAVE_LABELED_IPSEC
  143     || !pack_str(wp, &wp->msg->policy_label) /* string 28 */
  144 #endif
  145     || wp->str_roof - wp->str_next < (ptrdiff_t)wp->msg->keyval.len)    /* chunk (sort of string 28) */
  146     {
  147     ugh = "too many bytes of strings to fit in message to pluto";
  148     return ugh;
  149     }
  150 
  151     if(wp->msg->keyval.ptr)
  152     {
  153     memcpy(wp->str_next, wp->msg->keyval.ptr, wp->msg->keyval.len);
  154     }
  155     wp->msg->keyval.ptr = NULL;
  156     wp->str_next += wp->msg->keyval.len;
  157 
  158     return ugh;
  159 }