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Commit68b7708

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Merge pull request#16 from fearphage/organizing
pulled functionality out into unique files
2 parentsd72fc3f +7880050 commit68b7708

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5 files changed

+237
-211
lines changed

5 files changed

+237
-211
lines changed

‎index.js‎

Lines changed: 8 additions & 211 deletions
Original file line numberDiff line numberDiff line change
@@ -1,221 +1,18 @@
1-
/*global process, exports*/
2-
constBuffer=require('buffer').Buffer;
3-
constStream=require('stream');
4-
constutil=require('util');
5-
constbase64url=require('base64url');
6-
constjwa=require('jwa');
1+
/*global exports*/
2+
constSignStream=require('./lib/sign-stream');
3+
constVerifyStream=require('./lib/verify-stream');
74

85
constALGORITHMS=[
96
'HS256','HS384','HS512',
107
'RS256','RS384','RS512',
11-
'ES256','ES384','ES512',
8+
'ES256','ES384','ES512'
129
];
1310

14-
functiontoString(obj){
15-
if(typeofobj==='string')
16-
returnobj;
17-
if(typeofobj==='number'||Buffer.isBuffer(obj))
18-
returnobj.toString();
19-
returnJSON.stringify(obj);
20-
}
21-
22-
functionjwsSecuredInput(header,payload){
23-
constencodedHeader=base64url(toString(header),'binary');
24-
constencodedPayload=base64url(toString(payload),'binary');
25-
returnutil.format('%s.%s',encodedHeader,encodedPayload);
26-
}
27-
28-
functionjwsSign(opts){
29-
constheader=opts.header;
30-
constpayload=opts.payload;
31-
constsecretOrKey=opts.secret||opts.privateKey;
32-
constalgo=jwa(header.alg);
33-
constsecuredInput=jwsSecuredInput(header,payload);
34-
constsignature=algo.sign(securedInput,secretOrKey);
35-
returnutil.format('%s.%s',securedInput,signature);
36-
}
37-
38-
functionisObject(thing){
39-
returnObject.prototype.toString.call(thing)==='[object Object]';
40-
}
41-
42-
functionsafeJsonParse(thing){
43-
if(isObject(thing))
44-
returnthing;
45-
try{returnJSON.parse(thing)}
46-
catch(e){returnundefined}
47-
}
48-
49-
functionheaderFromJWS(jwsSig){
50-
constencodedHeader=jwsSig.split('.',1)[0];
51-
returnsafeJsonParse(base64url.decode(encodedHeader,'binary'));
52-
}
53-
54-
functionsecuredInputFromJWS(jwsSig){
55-
returnjwsSig.split('.',2).join('.');
56-
}
57-
58-
functionalgoFromJWS(jwsSig){
59-
varerr;
60-
constheader=headerFromJWS(jwsSig);
61-
if(typeofheader!='object'){
62-
err=newError("Invalid token: no header in signature '"+jwsSig+"'");
63-
err.code="MISSING_HEADER";
64-
err.signature=jwsSig;
65-
throwerr;
66-
}
67-
if(!header.alg){
68-
err=newError("Missing `alg` field in header for signature '"+jwsSig+"'");
69-
err.code="MISSING_ALGORITHM";
70-
err.header=header;
71-
err.signature=jwsSig;
72-
throwerr;
73-
}
74-
returnheader.alg;
75-
}
76-
77-
functionsignatureFromJWS(jwsSig){
78-
returnjwsSig.split('.')[2];
79-
}
80-
81-
functionpayloadFromJWS(jwsSig){
82-
constpayload=jwsSig.split('.')[1];
83-
returnbase64url.decode(payload,'binary');
84-
}
85-
86-
constJWS_REGEX=/^[a-zA-Z0-9\-_]+?\.[a-zA-Z0-9\-_]+?\.([a-zA-Z0-9\-_]+)?$/;
87-
functionisValidJws(string){
88-
if(!JWS_REGEX.test(string))
89-
returnfalse;
90-
if(!headerFromJWS(string))
91-
returnfalse;
92-
returntrue;
93-
}
94-
95-
functionjwsVerify(jwsSig,secretOrKey){
96-
jwsSig=toString(jwsSig);
97-
constsignature=signatureFromJWS(jwsSig);
98-
constsecuredInput=securedInputFromJWS(jwsSig);
99-
constalgo=jwa(algoFromJWS(jwsSig));
100-
returnalgo.verify(securedInput,signature,secretOrKey);
101-
}
102-
103-
functionjwsDecode(jwsSig,opts){
104-
opts=opts||{};
105-
jwsSig=toString(jwsSig);
106-
if(!isValidJws(jwsSig))
107-
returnnull;
108-
constheader=headerFromJWS(jwsSig);
109-
if(!header)
110-
returnnull;
111-
varpayload=payloadFromJWS(jwsSig);
112-
if(header.typ==='JWT'||opts.json)
113-
payload=JSON.parse(payload);
114-
return{
115-
header:header,
116-
payload:payload,
117-
signature:signatureFromJWS(jwsSig),
118-
};
119-
}
120-
121-
functionSignStream(opts){
122-
constsecret=opts.secret||opts.privateKey||opts.key;
123-
constsecretStream=newDataStream(secret);
124-
this.readable=true;
125-
this.header=opts.header;
126-
this.secret=this.privateKey=this.key=secretStream;
127-
this.payload=newDataStream(opts.payload);
128-
this.secret.once('close',function(){
129-
if(!this.payload.writable&&this.readable)
130-
this.sign();
131-
}.bind(this));
132-
133-
this.payload.once('close',function(){
134-
if(!this.secret.writable&&this.readable)
135-
this.sign();
136-
}.bind(this));
137-
}
138-
util.inherits(SignStream,Stream);
139-
SignStream.prototype.sign=functionsign(){
140-
constsignature=jwsSign({
141-
header:this.header,
142-
payload:this.payload.buffer,
143-
secret:this.secret.buffer,
144-
});
145-
this.emit('done',signature);
146-
this.emit('data',signature);
147-
this.emit('end');
148-
this.readable=false;
149-
returnsignature;
150-
};
151-
152-
functionVerifyStream(opts){
153-
opts=opts||{};
154-
constsecretOrKey=opts.secret||opts.publicKey||opts.key;
155-
constsecretStream=newDataStream(secretOrKey);
156-
this.readable=true;
157-
this.secret=this.publicKey=this.key=secretStream;
158-
this.signature=newDataStream(opts.signature);
159-
this.secret.once('close',function(){
160-
if(!this.signature.writable&&this.readable)
161-
this.verify();
162-
}.bind(this));
163-
164-
this.signature.once('close',function(){
165-
if(!this.secret.writable&&this.readable)
166-
this.verify();
167-
}.bind(this));
168-
}
169-
util.inherits(VerifyStream,Stream);
170-
VerifyStream.prototype.verify=functionverify(){
171-
constvalid=jwsVerify(this.signature.buffer,this.key.buffer);
172-
constobj=jwsDecode(this.signature.buffer);
173-
this.emit('done',valid,obj);
174-
this.emit('data',valid);
175-
this.emit('end');
176-
this.readable=false;
177-
returnvalid;
178-
};
179-
180-
functionDataStream(data){
181-
this.buffer=Buffer(data||0);
182-
this.writable=true;
183-
this.readable=true;
184-
if(!data)
185-
returnthis;
186-
if(typeofdata.pipe==='function')
187-
data.pipe(this);
188-
elseif(data.length){
189-
this.writable=false;
190-
process.nextTick(function(){
191-
this.buffer=data;
192-
this.emit('end',data);
193-
this.readable=false;
194-
this.emit('close');
195-
}.bind(this));
196-
}
197-
}
198-
util.inherits(DataStream,Stream);
199-
200-
DataStream.prototype.write=functionwrite(data){
201-
this.buffer=Buffer.concat([this.buffer,Buffer(data)]);
202-
this.emit('data',data);
203-
};
204-
205-
DataStream.prototype.end=functionend(data){
206-
if(data)
207-
this.write(data);
208-
this.emit('end',data);
209-
this.emit('close');
210-
this.writable=false;
211-
this.readable=false;
212-
};
213-
21411
exports.ALGORITHMS=ALGORITHMS;
215-
exports.sign=jwsSign;
216-
exports.verify=jwsVerify;
217-
exports.decode=jwsDecode;
218-
exports.isValid=isValidJws;
12+
exports.sign=SignStream.sign;
13+
exports.verify=VerifyStream.verify;
14+
exports.decode=VerifyStream.decode;
15+
exports.isValid=VerifyStream.isValid;
21916
exports.createSign=functioncreateSign(opts){
22017
returnnewSignStream(opts);
22118
};

‎lib/data-stream.js‎

Lines changed: 40 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,40 @@
1+
/*global module, process*/
2+
constBuffer=require('buffer').Buffer;
3+
constStream=require('stream');
4+
constutil=require('util');
5+
6+
functionDataStream(data){
7+
this.buffer=Buffer(data||0);
8+
this.writable=true;
9+
this.readable=true;
10+
if(!data)
11+
returnthis;
12+
if(typeofdata.pipe==='function')
13+
data.pipe(this);
14+
elseif(data.length){
15+
this.writable=false;
16+
process.nextTick(function(){
17+
this.buffer=data;
18+
this.emit('end',data);
19+
this.readable=false;
20+
this.emit('close');
21+
}.bind(this));
22+
}
23+
}
24+
util.inherits(DataStream,Stream);
25+
26+
DataStream.prototype.write=functionwrite(data){
27+
this.buffer=Buffer.concat([this.buffer,Buffer(data)]);
28+
this.emit('data',data);
29+
};
30+
31+
DataStream.prototype.end=functionend(data){
32+
if(data)
33+
this.write(data);
34+
this.emit('end',data);
35+
this.emit('close');
36+
this.writable=false;
37+
this.readable=false;
38+
};
39+
40+
module.exports=DataStream;

‎lib/sign-stream.js‎

Lines changed: 59 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,59 @@
1+
/*global module*/
2+
constbase64url=require('base64url');
3+
constDataStream=require('./data-stream');
4+
constjwa=require('jwa');
5+
constStream=require('stream');
6+
consttoString=require('./tostring');
7+
constutil=require('util');
8+
9+
functionjwsSecuredInput(header,payload){
10+
constencodedHeader=base64url(toString(header),'binary');
11+
constencodedPayload=base64url(toString(payload),'binary');
12+
returnutil.format('%s.%s',encodedHeader,encodedPayload);
13+
}
14+
15+
functionjwsSign(opts){
16+
constheader=opts.header;
17+
constpayload=opts.payload;
18+
constsecretOrKey=opts.secret||opts.privateKey;
19+
constalgo=jwa(header.alg);
20+
constsecuredInput=jwsSecuredInput(header,payload);
21+
constsignature=algo.sign(securedInput,secretOrKey);
22+
returnutil.format('%s.%s',securedInput,signature);
23+
}
24+
25+
functionSignStream(opts){
26+
constsecret=opts.secret||opts.privateKey||opts.key;
27+
constsecretStream=newDataStream(secret);
28+
this.readable=true;
29+
this.header=opts.header;
30+
this.secret=this.privateKey=this.key=secretStream;
31+
this.payload=newDataStream(opts.payload);
32+
this.secret.once('close',function(){
33+
if(!this.payload.writable&&this.readable)
34+
this.sign();
35+
}.bind(this));
36+
37+
this.payload.once('close',function(){
38+
if(!this.secret.writable&&this.readable)
39+
this.sign();
40+
}.bind(this));
41+
}
42+
util.inherits(SignStream,Stream);
43+
44+
SignStream.prototype.sign=functionsign(){
45+
constsignature=jwsSign({
46+
header:this.header,
47+
payload:this.payload.buffer,
48+
secret:this.secret.buffer
49+
});
50+
this.emit('done',signature);
51+
this.emit('data',signature);
52+
this.emit('end');
53+
this.readable=false;
54+
returnsignature;
55+
};
56+
57+
SignStream.sign=jwsSign;
58+
59+
module.exports=SignStream;

‎lib/tostring.js‎

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,10 @@
1+
/*global module*/
2+
constBuffer=require('buffer').Buffer;
3+
4+
module.exports=functiontoString(obj){
5+
if(typeofobj==='string')
6+
returnobj;
7+
if(typeofobj==='number'||Buffer.isBuffer(obj))
8+
returnobj.toString();
9+
returnJSON.stringify(obj);
10+
};

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