According to this sample:
http://www.codeproject.com/KB/mobile/DeepCast.aspx
It's possible to request a gps coordinate (longitude & latitude) including range when sending cellid information (MCC, MNC, towerid, etc)
Can someone tell me the actual parameter to request/post to this address?
http://www.google.com/glm/mmap
It could be something like this
http://www.google.com/glm/mmap?mcc=xxx&mnc=xxx&towerid=xxx
And i would like to know what response we would get.
I have observe OpenCellid website and they provide some nice API to begin with, but i want to know about that in google map too (since they have more completed database).
Here is example for work with
#!/usr/bin/python
country = 'fr'
#device = 'Sony_Ericsson-K750'
device = "Nokia N95 8Gb"
user_agent = 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)'
mmap_url = 'http://www.google.com/glm/mmap'
geo_url = 'http://maps.google.com/maps/geo'
from struct import pack, unpack
from httplib import HTTP
import urllib2
def fetch_latlong_http(query):
http = HTTP('www.google.com', 80)
http.putrequest('POST', '/glm/mmap')
http.putheader('Content-Type', 'application/binary')
http.putheader('Content-Length', str(len(query)))
http.endheaders()
http.send(query)
code, msg, headers = http.getreply()
result = http.file.read()
return result
def fetch_latlong_urllib(query):
headers = { 'User-Agent' : user_agent }
req = urllib2.Request(mmap_url, query, headers)
resp = urllib2.urlopen(req)
response = resp.read()
return response
fetch_latlong = fetch_latlong_http
def get_location_by_cell(cid, lac, mnc=0, mcc=0, country='fr'):
b_string = pack('>hqh2sh13sh5sh3sBiiihiiiiii',
21, 0,
len(country), country,
len(device), device,
len('1.3.1'), "1.3.1",
len('Web'), "Web",
27, 0, 0,
3, 0, cid, lac,
0, 0, 0, 0)
bytes = fetch_latlong(b_string)
(a, b,errorCode, latitude, longitude, c, d, e) = unpack(">hBiiiiih",bytes)
latitude = latitude / 1000000.0
longitude = longitude / 1000000.0
return latitude, longitude
def get_location_by_geo(latitude, longitude):
url = '%s?q=%s,%s&output=json&oe=utf8' % (geo_url, str(latitude), str(longitude))
return urllib2.urlopen(url).read()
if __name__ == '__main__':
print get_location_by_cell(20465, 495, 3, 262)
print get_location_by_cell(20442, 6015)
print get_location_by_cell(1085, 24040)
print get_location_by_geo(40.714224, -73.961452)
print get_location_by_geo(13.749113, 100.565327)
You could use the Google Location API which is used by Firefox (Example see at http://www.mozilla.com/en-US/firefox/geolocation/ ) which has the url www.google.com/loc/json/. In fact this is JSON based webservice and a minimal Perl Example Look like this:
use LWP;
my $ua = LWP::UserAgent->new;
$ua->agent("TestApp/0.1 ");
$ua->env_proxy();
my $req = HTTP::Request->new(POST => 'https://www.google.com/loc/json');
$req->content_type('application/jsonrequest');
$req->content('{"cell_towers": [{"location_area_code": "8721", "mobile_network_code": "01", "cell_id": "7703", "mobile_country_code": "262"}], "version": "1.1.0", "request_address": "true"}');
# Pass request to the user agent and get a response back
my $res = $ua->request($req);
# Check the outcome of the response
if ($res->is_success) {
print $res->content;
} else {
print $res->status_line, "\n";
return undef;
}
Please keep in mind that Google has not officially opened this API for other uses...
Base on GeolocationAPI, here are some parts of my code:
import java.io.IOException;
import java.io.StringWriter;
import java.net.HttpURLConnection;
import java.net.URL;
//http://code.google.com/p/google-gson/
import com.google.gson.stream.JsonWriter;
...
/**
* Requests latitude and longitude from Google.
*
* @param gsmParams
* {@link GsmParams}
* @return an {@link HttpURLConnection} containing connection to Google
* lat-long data.
* @throws IOException
*/
public HttpURLConnection requestLatlongFromGoogle(GsmParams gsmParams)
throws IOException {
// prepare parameters for POST method
StringWriter sw = new StringWriter();
JsonWriter jw = new JsonWriter(sw);
try {
jw.beginObject();
jw.name("host").value("localhost");
jw.name("version").value("1.1.0");
jw.name("request_address").value(true);
jw.name("cell_towers");
jw.beginArray().beginObject();
jw.name("cell_id").value(gsmParams.getCid());
jw.name("location_area_code").value(gsmParams.getLac());
jw.name("mobile_network_code").value(gsmParams.getMnc());
jw.name("mobile_country_code").value(gsmParams.getMcc());
jw.endObject().endArray().endObject();
} finally {
try {
jw.close();
} catch (IOException ioe) {
}
try {
sw.close();
} catch (IOException ioe) {
}
}
final String JsonParams = sw.toString();
final String GoogleLocJsonUrl = "http://www.google.com/loc/json";
// post request
URL url = null;
HttpURLConnection conn = null;
url = new URL(GoogleLocJsonUrl);
conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout((int) 30e3);
conn.setReadTimeout((int) 30e3);
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.getOutputStream().write(JsonParams.getBytes());
conn.getOutputStream().flush();
conn.getOutputStream().close();
int resCode = conn.getResponseCode();
if (resCode == Http_BadRequest || resCode != Http_Ok) {
throw new IOException(String.format(
"Response code from Google: %,d", resCode));
}
return conn;
}
The object GsmParams is just a Java bean containing GSM parameters MCC, MNC, LAC, CID. I think you can create a same class easily.
After getting connection, you can call conn.getInputStream() and get results from Google Maps. Then use JsonReader to parse data...
The new place for the Google location API is the following : https://developers.google.com/maps/documentation/geolocation/intro
With this API, you can retrieve a location from Cell information (cellid, mcc, mnc, and lac)
As noted in other threads also check out https://labs.ericsson.com/apis/mobile-location/documentation/cell-id-look-up-api for a free cell-ID database to get coordinates from cellid, mcc, mnc, and lac .
来源：https://stackoverflow.com/questions/1598696/google-maps-cellid-to-location