WPS ER: Fetch and parse device description

This commit is contained in:
Jouni Malinen 2009-11-08 16:46:03 +02:00
parent 0b40d03394
commit 585774f28a
4 changed files with 169 additions and 6 deletions

View file

@ -297,3 +297,50 @@ struct wpabuf * http_client_get_body(struct http_client *c)
httpread_length_get(c->hread));
return &c->body;
}
char * http_link_update(char *url, const char *base)
{
char *n;
size_t len;
const char *pos;
/* RFC 2396, Chapter 5.2 */
/* TODO: consider adding all cases described in RFC 2396 */
if (url == NULL)
return NULL;
if (os_strncmp(url, "http://", 7) == 0)
return url; /* absolute link */
if (os_strncmp(base, "http://", 7) != 0)
return url; /* unable to handle base URL */
len = os_strlen(url) + 1 + os_strlen(base) + 1;
n = os_malloc(len);
if (n == NULL)
return url; /* failed */
if (url[0] == '/') {
pos = os_strchr(base + 7, '/');
if (pos == NULL) {
os_snprintf(n, len, "%s%s", base, url);
} else {
os_memcpy(n, base, pos - base);
os_memcpy(n + (pos - base), url, os_strlen(url));
}
} else {
pos = os_strrchr(base + 7, '/');
if (pos == NULL) {
os_snprintf(n, len, "%s/%s", base, url);
} else {
os_memcpy(n, base, pos - base + 1);
os_memcpy(n + (pos - base) + 1, url, os_strlen(url));
}
}
os_free(url);
return n;
}

View file

@ -38,5 +38,6 @@ struct http_client * http_client_url(const char *url,
void *cb_ctx);
void http_client_free(struct http_client *c);
struct wpabuf * http_client_get_body(struct http_client *c);
char * http_link_update(char *url, const char *base);
#endif /* HTTP_CLIENT_H */

View file

@ -11,6 +11,8 @@
#ifndef UPNP_XML_H
#define UPNP_XML_H
#include "http.h"
void xml_data_encode(struct wpabuf *buf, const char *data, int len);
void xml_add_tagged_data(struct wpabuf *buf, const char *tag,
const char *data);

View file

@ -17,17 +17,15 @@
#include "common.h"
#include "uuid.h"
#include "eloop.h"
#include "http_client.h"
#include "upnp_xml.h"
#include "wps_i.h"
#include "wps_upnp.h"
#include "wps_upnp_i.h"
/* TODO:
* SSDP M-SEARCH multicast TX for WFA
* create AP entry
* fetch wps_device info based on LOCATION: from SSDP NOTIFY
* parse wps_device info into AP entry (name, SCPD/control/eventSub URLs, etc.
* subscribe to events
* start own HTTP server for receiving events
* send notification of new AP device with wpa_msg
* re-send notifications with wpa_msg if ER re-started (to update wpa_gui-qt4)
* (also re-send SSDP M-SEARCH in this case to find new APs)
@ -41,7 +39,22 @@ struct wps_er_ap {
struct wps_er_ap *next;
struct in_addr addr;
char *location;
struct http_client *http;
char *friendly_name;
char *manufacturer;
char *manufacturer_url;
char *model_description;
char *model_name;
char *model_number;
char *model_url;
char *serial_number;
char *udn;
char *upc;
char *scpd_url;
char *control_url;
char *event_sub_url;
};
struct wps_er {
@ -82,6 +95,23 @@ static void wps_er_ap_free(struct wps_er *er, struct wps_er_ap *ap)
inet_ntoa(ap->addr), ap->location);
eloop_cancel_timeout(wps_er_ap_timeout, er, ap);
os_free(ap->location);
http_client_free(ap->http);
os_free(ap->friendly_name);
os_free(ap->manufacturer);
os_free(ap->manufacturer_url);
os_free(ap->model_description);
os_free(ap->model_name);
os_free(ap->model_number);
os_free(ap->model_url);
os_free(ap->serial_number);
os_free(ap->udn);
os_free(ap->upc);
os_free(ap->scpd_url);
os_free(ap->control_url);
os_free(ap->event_sub_url);
os_free(ap);
}
@ -95,6 +125,87 @@ static void wps_er_ap_timeout(void *eloop_data, void *user_ctx)
}
static void wps_er_parse_device_description(struct wps_er_ap *ap,
struct wpabuf *reply)
{
/* Note: reply includes null termination after the buffer data */
const char *data = wpabuf_head(reply);
wpa_hexdump_ascii(MSG_MSGDUMP, "WPS ER: Device info",
wpabuf_head(reply), wpabuf_len(reply));
ap->friendly_name = xml_get_first_item(data, "friendlyName");
wpa_printf(MSG_DEBUG, "WPS ER: friendlyName='%s'", ap->friendly_name);
ap->manufacturer = xml_get_first_item(data, "manufacturer");
wpa_printf(MSG_DEBUG, "WPS ER: manufacturer='%s'", ap->manufacturer);
ap->manufacturer_url = xml_get_first_item(data, "manufacturerURL");
wpa_printf(MSG_DEBUG, "WPS ER: manufacturerURL='%s'",
ap->manufacturer_url);
ap->model_description = xml_get_first_item(data, "modelDescription");
wpa_printf(MSG_DEBUG, "WPS ER: modelDescription='%s'",
ap->model_description);
ap->model_name = xml_get_first_item(data, "modelName");
wpa_printf(MSG_DEBUG, "WPS ER: modelName='%s'", ap->model_name);
ap->model_number = xml_get_first_item(data, "modelNumber");
wpa_printf(MSG_DEBUG, "WPS ER: modelNumber='%s'", ap->model_number);
ap->model_url = xml_get_first_item(data, "modelURL");
wpa_printf(MSG_DEBUG, "WPS ER: modelURL='%s'", ap->model_url);
ap->serial_number = xml_get_first_item(data, "serialNumber");
wpa_printf(MSG_DEBUG, "WPS ER: serialNumber='%s'", ap->serial_number);
ap->udn = xml_get_first_item(data, "UDN");
wpa_printf(MSG_DEBUG, "WPS ER: UDN='%s'", ap->udn);
ap->upc = xml_get_first_item(data, "UPC");
wpa_printf(MSG_DEBUG, "WPS ER: UPC='%s'", ap->upc);
ap->scpd_url = http_link_update(
xml_get_first_item(data, "SCPDURL"), ap->location);
wpa_printf(MSG_DEBUG, "WPS ER: SCPDURL='%s'", ap->scpd_url);
ap->control_url = http_link_update(
xml_get_first_item(data, "controlURL"), ap->location);
wpa_printf(MSG_DEBUG, "WPS ER: controlURL='%s'", ap->control_url);
ap->event_sub_url = http_link_update(
xml_get_first_item(data, "eventSubURL"), ap->location);
wpa_printf(MSG_DEBUG, "WPS ER: eventSubURL='%s'", ap->event_sub_url);
/* TODO: subscribe for events */
}
static void wps_er_http_dev_desc_cb(void *ctx, struct http_client *c,
enum http_client_event event)
{
struct wps_er_ap *ap = ctx;
struct wpabuf *reply;
switch (event) {
case HTTP_CLIENT_OK:
reply = http_client_get_body(c);
if (reply == NULL)
break;
wps_er_parse_device_description(ap, reply);
break;
case HTTP_CLIENT_FAILED:
case HTTP_CLIENT_INVALID_REPLY:
case HTTP_CLIENT_TIMEOUT:
wpa_printf(MSG_DEBUG, "WPS ER: Failed to fetch device info");
break;
}
http_client_free(ap->http);
ap->http = NULL;
}
static void wps_er_ap_add(struct wps_er *er, struct in_addr *addr,
const char *location, int max_age)
{
@ -125,7 +236,9 @@ static void wps_er_ap_add(struct wps_er *er, struct in_addr *addr,
wpa_printf(MSG_DEBUG, "WPS ER: Added AP entry for %s (%s)",
inet_ntoa(ap->addr), ap->location);
/* TODO: get device data and subscribe for events */
/* Fetch device description */
ap->http = http_client_url(ap->location, NULL, 10000,
wps_er_http_dev_desc_cb, ap);
}