static DisplayEntry *
ReadDisplayEntry (FILE *file)
{
char *displayOrAlias;
DisplayEntry *d;
struct _display *display;
HostEntry *h, **prev;
tryagain:
displayOrAlias = ReadWord (file, FALSE);
if (!displayOrAlias)
return NULL;
d = malloc (sizeof (DisplayEntry));
d->notAllowed = 0;
d->notBroadcast = 0;
d->chooser = 0;
if (*displayOrAlias == ALIAS_CHARACTER)
{
d->type = DISPLAY_ALIAS;
d->entry.aliasName = strdup (displayOrAlias);
if (!d->entry.aliasName)
{
free (d);
return NULL;
}
}
else if (!strcmp(displayOrAlias, LISTEN_STRING))
{
d->type = DISPLAY_LISTEN;
}
else
{
if (*displayOrAlias == NEGATE_CHARACTER)
{
d->notAllowed = 1;
++displayOrAlias;
}
if (HasGlobCharacters (displayOrAlias))
{
d->type = DISPLAY_PATTERN;
d->entry.displayPattern = strdup (displayOrAlias);
if (!d->entry.displayPattern)
{
free (d);
return NULL;
}
}
else
{
void *addr = NULL;
size_t addr_length = 0;
int addrtype = 0;
# if defined(IPv6) && defined(AF_INET6)
struct addrinfo *ai = NULL;
if (getaddrinfo(displayOrAlias, NULL, NULL, &ai) == 0) {
addrtype = ai->ai_addr->sa_family;
if (addrtype == AF_INET) {
addr = &((struct sockaddr_in *)ai->ai_addr)->sin_addr;
addr_length = sizeof(struct in_addr);
} else if (addrtype == AF_INET6) {
addr = &((struct sockaddr_in6 *)ai->ai_addr)->sin6_addr;
addr_length = sizeof(struct in6_addr);
}
}
# else
struct hostent *hostent;
if ((hostent = gethostbyname (displayOrAlias)) != NULL)
{
Debug("ReadDisplayEntry: %s\n", displayOrAlias);
addr = hostent->h_addr;
addrtype = hostent->h_addrtype;
addr_length = hostent->h_length;
}
# endif
if (addr == NULL)
{
LogError ("Access file %s, display %s unknown\n", accessFile, displayOrAlias);
free (d);
# if defined(IPv6) && defined(AF_INET6)
if (ai)
freeaddrinfo(ai);
# endif
goto tryagain;
}
d->type = DISPLAY_ADDRESS;
display = &d->entry.displayAddress;
if (!XdmcpAllocARRAY8 (&display->clientAddress, addr_length))
{
free (d);
# if defined(IPv6) && defined(AF_INET6)
if (ai)
freeaddrinfo(ai);
# endif
return NULL;
}
memmove( display->clientAddress.data, addr, addr_length);
# if defined(IPv6) && defined(AF_INET6)
if (ai)
freeaddrinfo(ai);
# endif
switch (addrtype)
{
# ifdef AF_UNIX
case AF_UNIX:
display->connectionType = FamilyLocal;
break;
# endif
# ifdef AF_INET
case AF_INET:
display->connectionType = FamilyInternet;
break;
# endif
# if defined(IPv6) && defined(AF_INET6)
case AF_INET6:
display->connectionType = FamilyInternet6;
break;
# endif
# ifdef AF_DECnet
case AF_DECnet:
display->connectionType = FamilyDECnet;
break;
# endif
default:
display->connectionType = FamilyLocal;
break;
}
}
}
prev = &d->hosts;
while ((h = ReadHostEntry (file)))
{
if (h->type == HOST_CHOOSER)
{
FreeHostEntry (h);
d->chooser = 1;
} else if (h->type == HOST_NOBROADCAST) {
FreeHostEntry (h);
d->notBroadcast = 1;
} else if (h->type == HOST_ANYADDR) {
if (d->type == DISPLAY_LISTEN) {
*prev = h;
prev = &h->next;
} else {
Debug("Wildcard host specified in Xaccess for type other than LISTEN -- ignoring\n");
FreeHostEntry (h);
}
} else {
*prev = h;
prev = &h->next;
}
}
*prev = NULL;
return d;
}
static DisplayEntry *
ReadDisplayEntry (FILE *file)
{
char *displayOrAlias;
DisplayEntry *d;
struct _display *display;
HostEntry *h, **prev;
struct hostent *hostent;
displayOrAlias = ReadWord (file, FALSE);
if (!displayOrAlias)
return NULL;
d = (DisplayEntry *) malloc (sizeof (DisplayEntry));
d->notAllowed = 0;
d->notBroadcast = 0;
d->chooser = 0;
if (*displayOrAlias == ALIAS_CHARACTER)
{
d->type = DISPLAY_ALIAS;
d->entry.aliasName = malloc (strlen (displayOrAlias) + 1);
if (!d->entry.aliasName)
{
free ((char *) d);
return NULL;
}
strcpy (d->entry.aliasName, displayOrAlias);
}
else
{
if (*displayOrAlias == NEGATE_CHARACTER)
{
d->notAllowed = 1;
++displayOrAlias;
}
if (HasGlobCharacters (displayOrAlias))
{
d->type = DISPLAY_PATTERN;
d->entry.displayPattern = malloc (strlen (displayOrAlias) + 1);
if (!d->entry.displayPattern)
{
free ((char *) d);
return NULL;
}
strcpy (d->entry.displayPattern, displayOrAlias);
}
else
{
if ((hostent = gethostbyname (displayOrAlias)) == NULL)
{
LogError ("Access file %s, display %s unknown\n", accessFile, displayOrAlias);
free ((char *) d);
return NULL;
}
d->type = DISPLAY_ADDRESS;
display = &d->entry.displayAddress;
if (!XdmcpAllocARRAY8 (&display->clientAddress, hostent->h_length))
{
free ((char *) d);
return NULL;
}
memmove( display->clientAddress.data, hostent->h_addr, hostent->h_length);
switch (hostent->h_addrtype)
{
#ifdef AF_UNIX
case AF_UNIX:
display->connectionType = FamilyLocal;
break;
#endif
#ifdef AF_INET
case AF_INET:
display->connectionType = FamilyInternet;
break;
#endif
#ifdef AF_DECnet
case AF_DECnet:
display->connectionType = FamilyDECnet;
break;
#endif
default:
display->connectionType = FamilyLocal;
break;
}
}
}
prev = &d->hosts;
while ((h = ReadHostEntry (file)))
{
if (h->type == HOST_CHOOSER)
{
FreeHostEntry (h);
d->chooser = 1;
} else if (h->type == HOST_NOBROADCAST) {
FreeHostEntry (h);
d->notBroadcast = 1;
} else {
*prev = h;
prev = &h->next;
}
}
*prev = NULL;
return d;
}