static int
upnp_device_advlist_init(UPNP_CONTEXT *context)
{
int i;
int size;
UPNP_INTERFACE *ifp = context->focus_ifp;
UPNP_ADVERTISE *src, *dst;
char new_uuid[64];
char old_uuid[64];
/* Count advertise_table size */
for (i = 0; ifp->device->advertise_table[i].name; i++)
;
size = (i + 1) * sizeof(UPNP_ADVERTISE);
ifp->advlist = (UPNP_ADVERTISE *)malloc(size);
if (ifp->advlist == NULL)
return -1;
memcpy(ifp->advlist, ifp->device->advertise_table, size);
/* Renew UUIDs of this ifp */
for (src = ifp->advlist; src->name; src++) {
if (src->type != ADVERTISE_ROOTDEVICE &&
src->type != ADVERTISE_DEVICE)
continue;
/* Generate interface uuid for this device */
strcpy(old_uuid, src->uuid);
upnp_gen_uuid(new_uuid, src->name, (unsigned char *)ifp->mac);
/* Sync to device/services with this UUID */
for (dst = ifp->advlist; dst->name; dst++) {
if (strcmp(dst->uuid, old_uuid) == 0) {
strncpy(dst->uuid, new_uuid, sizeof(dst->uuid));
dst->uuid[sizeof(dst->uuid)-1] = '\0';
}
}
}
return 0;
}
/* Give a unique uuid to this rootdevice */
int
upnp_device_renew_uuid(UPNP_CONTEXT *context, UPNP_DEVICE *device)
{
char *s, *p;
char deviceType[256];
char serviceType[256];
char new_uuid[64];
UPNP_DESCRIPTION *desc;
/* Find root device */
for (desc = device->description_table; desc; desc++) {
if (strcmp(device->root_device_xml, desc->name+1) == 0)
break;
}
if (desc == 0) {
upnp_syslog(LOG_ERR, "Root device can not find it's xml.");
return -1;
}
/*
* Update UUID of the root device xml
* for each AP/router. By using the MAC address
* and the value between <deviceType>...</deviceType>, we can
* generate a unique UUID.
*/
for (p = desc->xml; *p != 0; p++) {
/* Search for <deviceType> */
if (strncmp(p, DEVICE_BTAG, strlen(DEVICE_BTAG)) == 0) {
p += strlen(DEVICE_BTAG);
/* Find the balanced </deviceType> */
s = strstr(p, DEVICE_ETAG);
if (s == 0 || (s-p) > sizeof(deviceType)-1) {
upnp_syslog(LOG_ERR,
"Parse format:<deviceType>...</deviceType> error.\n");
return -1;
}
/* Save deviceType */
memcpy(deviceType, p, s-p);
deviceType[s-p] = '\0';
p = s + strlen(DEVICE_ETAG);
}
/*
* For example,
* <deviceType>urn:schemas-upnp-org:device:InternetGatewayDevice:1</deviceType>
* the value between <UDN>...</UDN> is the UUID we have to replace.
* The UUID format is such as, uuid:eb9ab5b2-981c-4401-a20e-b7bcde359dbb.
* By generate the same UUID size, we don't have to do memory ajustment.
*/
if (strncmp(p, UDN_BTAG, strlen(UDN_BTAG)) == 0) {
p += strlen(UDN_BTAG);
/* Find the balanced </UDN> */
s = strstr(p, UDN_ETAG);
if (s == 0 || (s-p) > sizeof(deviceType)-1) {
upnp_syslog(LOG_ERR, "Parse format:<UDN>...</UDN> error.\n");
return -1;
}
p += 5; /* "uuid:" is 5 char */
if ((s-p) != 36) {
upnp_syslog(LOG_ERR, "UUID length is not 36.\n");
return -1;
}
/* Replace uuid */
upnp_gen_uuid(new_uuid, deviceType);
memcpy(p, new_uuid, 36); /* uuid is 36 characters. */
p = p + 36; /* 46 = 10 + 36 */
/*
* Afert the UUID of device in description XML is changed,
* we have to sync this new UUID to the advertisement table.
*/
sync_advertise_uuid(device, new_uuid, deviceType);
}
/*
* The SSDP broadcasts not only the device information but
* also all the services of this device, which shares the
* UUID of that device.
* As a result, we have to find out all the <serviceType>'s
* of this <deviceType>, and sync the device UUID to the
* advertisement table
*/
if (strncmp(p, SERVICE_BTAG, strlen(SERVICE_BTAG)) == 0) {
p += strlen(SERVICE_BTAG);
/* Find the balanced </serviceType> */
s = strstr(p, SERVICE_ETAG);
if (s == 0 || (s-p) > sizeof(serviceType)-1) {
upnp_syslog(LOG_ERR,
"Parse format:<serviceType>...</serviceType> error.\n");
return -1;
}
/* Save serviceType */
strncpy(serviceType, p, s-p);
serviceType[s-p] = '\0';
p = s + strlen(SERVICE_ETAG);
/*
* Found a <serviceType>...</serviceType>.
* For example,
* <serviceType>urn:schemas-upnp-org:service:Layer3Forwarding:1
* </serviceType>
* is the service of
* <deviceType>urn:schemas-upnp-org:device:InternetGatewayDevice:1
* </deviceType>.
* We have to search the
* "urn:schemas-upnp-org:service:Layer3Forwarding:1"
* in the advertisement table, and replace its UUID with the UUID of
* "urn:schemas-upnp-org:device:InternetGatewayDevice:1".
*/
sync_advertise_uuid(device, new_uuid, serviceType);
}
}
return 0;
}
