com.untzuntz.ustackserverapi.CallParameters Maven / Gradle / Ivy
package com.untzuntz.ustackserverapi;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.*;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
import org.apache.log4j.Logger;
import org.bson.BasicBSONObject;
import org.jboss.netty.handler.codec.http.QueryStringDecoder;
import com.mongodb.BasicDBList;
import com.mongodb.BasicDBObject;
import com.mongodb.util.JSON;
import com.untzuntz.ustackserverapi.auth.AuthenticationInt;
import com.untzuntz.ustackserverapi.params.types.ParameterDefinitionInt;
import com.untzuntz.ustackserverapi.util.UploadedFile;
public class CallParameters {
static Logger logger = Logger.getLogger(CallParameters.class);
private QueryStringDecoder qsd;
private String path;
private String postData;
private String remoteIpAddress;
private String remoteIpCountry;
private List uploadedFiles;
private Long tokenTTL;
public String getPostData() {
return postData;
}
public void setPostData(String postData) {
this.postData = postData;
}
public void setTokenTTL(Long ttl) {
tokenTTL = ttl;
}
public Long getTokenTTL() {
return tokenTTL;
}
private Map> qsdMap;
public CallParameters(String uri) {
qsd = new QueryStringDecoder(uri);
if (uri.indexOf("?") > -1)
path = uri.substring(0, uri.indexOf("?"));
else
path = uri;
Map> map = qsd.getParameters();
if (map == null)
qsdMap = new HashMap>();
else
qsdMap = new HashMap>(map);
if (qsdMap.get("x_object") != null)
{
try {
BasicBSONObject bs = (BasicBSONObject)JSON.parse(getParameter("x_object"));
if (bs != null)
{
Iterator it = bs.keySet().iterator();
while (it.hasNext())
{
String key = it.next();
setParameterValue(key, bs.get(key) + "");
}
}
} catch (Exception jpe) {}
}
}
public List getUploadedFiles() {
return uploadedFiles;
}
public void setUploadedFiles(List files) {
uploadedFiles = files;
}
public String getRemoteIpAddress() {
return remoteIpAddress;
}
public String getRemoteCountry() {
return remoteIpCountry;
}
public void setRemoteCountry(String remoteIpCountry) {
this.remoteIpCountry = remoteIpCountry;
}
public void setRemoteIpAddress(String remoteIpAddress) {
this.remoteIpAddress = remoteIpAddress;
}
public void setParameterValue(String param, String val)
{
if (param == null)
return;
if (val == null)
{
qsdMap.remove(param);
return;
}
List valList = new ArrayList();
valList.add(val);
qsdMap.put(param, valList);
}
public String getPath() {
return qsd.getPath();
}
/**
* All strings are handled as UTF-8
*/
private static final String UTF8_CHARSET = "UTF-8";
/**
* The HMAC algorithm required by Amazon
*/
private static final String HMAC_SHA256_ALGORITHM = "HmacSHA256";
private static final Hashtable keys = new Hashtable();
public String getRequestSignature(String key)
{
SortedMap sortedParamMap = new TreeMap();
Map> params = qsd.getParameters();
Iterator it = params.keySet().iterator();
while (it.hasNext())
{
String param = it.next();
if (!"sig".equalsIgnoreCase(param))
{
List val = params.get(param);
String valStr = "";
if (val.size() > 0)
valStr = val.get(0);
//logger.info("\t" + param + " => " + valStr);
sortedParamMap.put(param, valStr);
}
}
// get the canonical form the query string
String canonicalQS = path + "?" + canonicalize(sortedParamMap);
String sig = hmac(key, canonicalQS);
//String psig = percentEncodeRfc3986(sig);
logger.info(String.format("Full Request to Encode: %s => Signature: %s", canonicalQS, sig));
return sig;
}
/**
* Canonicalize the query string.
*
* @param sortedParamMap Parameter name-value pairs in lexicographical order.
* @return Canonical form of query string.
*/
private String canonicalize(SortedMap sortedParamMap) {
if (sortedParamMap.isEmpty()) {
return "";
}
StringBuffer buffer = new StringBuffer();
Iterator> iter = sortedParamMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry kvpair = iter.next();
buffer.append(kvpair.getKey());
buffer.append("=");
buffer.append(kvpair.getValue());
// buffer.append(percentEncodeRfc3986(kvpair.getKey()));
// buffer.append("=");
// buffer.append(percentEncodeRfc3986(kvpair.getValue()));
if (iter.hasNext()) {
buffer.append("&");
}
}
String cannoical = buffer.toString();
return cannoical;
}
/**
* Percent-encode values according the RFC 3986. The built-in Java
* URLEncoder does not encode according to the RFC, so we make the
* extra replacements.
*
* @param s decoded string
* @return encoded string per RFC 3986
*/
public static String percentEncodeRfc3986(String s) {
if (s == null)
return null;
String out;
try {
out = URLEncoder.encode(s, UTF8_CHARSET)
.replace("+", "%20")
.replace("*", "%2A")
.replace("%7E", "~");
} catch (UnsupportedEncodingException e) {
out = s;
}
return out;
}
/**
* Compute the HMAC.
*
* @param stringToSign String to compute the HMAC over.
* @return base64-encoded hmac value.
*/
private String hmac(String key, String stringToSign) {
if (key == null)
return null;
Mac mac = keys.get(key);
if (mac == null)
{
try {
byte[] secretyKeyBytes = key.getBytes(UTF8_CHARSET);
SecretKeySpec secretKeySpec = new SecretKeySpec(secretyKeyBytes, HMAC_SHA256_ALGORITHM);
mac = Mac.getInstance(HMAC_SHA256_ALGORITHM);
mac.init(secretKeySpec);
keys.put(key, mac);
} catch (Exception e) {
return null;
}
}
String signature = null;
byte[] data;
byte[] rawHmac;
try {
data = stringToSign.getBytes(UTF8_CHARSET);
rawHmac = mac.doFinal(data);
Base64 encoder = new Base64();
signature = new String(encoder.encode(rawHmac));
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(UTF8_CHARSET + " is unsupported!", e);
}
return signature;
}
public String getQueryString() {
Map> paramsAsArray = getParameters();
StringBuffer paramStr = new StringBuffer();
Iterator var3 = paramsAsArray.keySet().iterator();
while(var3.hasNext()) {
Map.Entry param = (Map.Entry)var3.next();
String[] vals = new String[1];
vals[0] = param.getValue().toString();
paramStr.append(String.format("%s=%s", param.getKey(), vals[0]));
}
return paramStr.toString();
}
public Map> getParameters() {
return qsd.getParameters();
}
public BasicDBList getParameterList()
{
BasicDBList ret = new BasicDBList();
Map> params = qsd.getParameters();
Iterator it = params.keySet().iterator();
while (it.hasNext())
{
String param = it.next();
if (!"sig".equalsIgnoreCase(param))
{
List val = params.get(param);
String valStr = "";
if (val.size() > 0)
valStr = val.get(0);
ret.add(new BasicDBObject(param, valStr));
}
}
return ret;
}
public boolean has(ParameterDefinitionInt param)
{
return param.hasValue( getParameter(param.getName()) );
}
public T get(ParameterDefinitionInt param)
{
return param.getValue( getParameter(param.getName()) );
}
public String getParameter(String name) {
List val = qsdMap.get(name);
if (val == null || val.size() == 0)
return null;
return val.get(0);
}
private Object authObject;
public void setAuthInfo(Object o) {
authObject = o;
}
@SuppressWarnings("unchecked")
public T getAuthInfo(AuthenticationInt authType)
{
return (T)authObject;
}
}
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