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-rw-r--r--backend/node/src/clipperz.js17
1 files changed, 12 insertions, 5 deletions
diff --git a/backend/node/src/clipperz.js b/backend/node/src/clipperz.js
index 37b9cae..72b6c9f 100644
--- a/backend/node/src/clipperz.js
+++ b/backend/node/src/clipperz.js
@@ -2,96 +2,98 @@ var FS = require('fs');
var CRYPTO = require('crypto');
var BIGNUM = require('bignum');
var ASYNC = require('async');
var express_store = require('express-session').Store;
function clipperz_hash(v) {
return CRYPTO.createHash('sha256').update(
CRYPTO.createHash('sha256').update(v).digest('binary')
).digest('hex');
};
function clipperz_random() {
for(var r = '';r.length<64;r+=''+BIGNUM(Math.floor(Math.random()*1e18)).toString(16));
return r.substr(0,64);
};
function clipperz_store(PG) {
var rv = function(o) { express_store.call(this,o); }
rv.prototype.get = function(sid,cb) { PG.Q(
"SELECT s_data FROM clipperz.thesession WHERE s_id=$1",[sid],
function(e,r) { cb(e,(e||!r.rowCount)?null:JSON.parse(r.rows[0].s_data)); }
) };
rv.prototype.set = function(sid,data,cb) {
var d = JSON.stringify(data);
PG.Q(
"UPDATE clipperz.thesession SET s_data=$1, s_mtime=current_timestamp"
+" WHERE s_id=$2",[d,sid], function(e,r) {
if(e) return cb(e);
if(r.rowCount) return cb();
PG.Q("INSERT INTO clipperz.thesession (s_id,s_data) VALUES ($1,$2)",[sid,d],cb);
});
};
rv.prototype.destroy = function(sid,cb) { PG.Q(
"DELETE FROM clipperz.thesession WHERE s_id=$1",[sid],cb
) };
rv.prototype.length = function(cb) { PG.Q(
"SELECT count(*) AS c FROM clipperz.thesession", function(e,r) {
cb(e,e?null:r.rows[0].c);
}
) };
rv.prototype.clear = function(cb) { PQ.Q(
"TRUNCATE clipperz.thesession", cb
) };
rv.prototype.__proto__ = express_store.prototype;
return rv;
}
var srp_g = BIGNUM(2);
var srp_n = BIGNUM("115b8b692e0e045692cf280b436735c77a5a9e8a9e7ed56c965f87db5b2a2ece3",16);
+var srp_k = BIGNUM("64398bff522814e306a97cb9bfc4364b7eed16a8c17c5208a40a2bad2933c8e",16);
+var srp_hn = "597626870978286801440197562148588907434001483655788865609375806439877501869636875571920406529";
var n123 = '112233445566778899aabbccddeeff00112233445566778899aabbccddeeff00';
var CLIPPERZ = module.exports = function(CONFIG) {
var LOGGER = CONFIG.logger||{trace:function(){}};
var PG = {
url: CONFIG.psql,
PG: require('pg').native,
Q: function(q,a,cb) {
if('function'===typeof a) cb=a,a=[];
LOGGER.trace({query:q,args:a},'SQL: %s',q);
PG.PG.connect(PG.url,function(e,C,D) {
if(e) return cb(e);
var t0=new Date();
C.query(q,a,function(e,r) {
var t1=new Date(), dt=t1-t0;
D();
LOGGER.trace({query:q,args:a,ms:dt,rows:r&&r.rowCount,err:e},"SQL query '%s' took %dms",q,dt);
cb(e,r);
});
});
},
T: function(cb) {
PG.PG.connect(PG.url,function(e,C,D) {
if(e) return cb(e);
C.query('BEGIN',function(e){
if(e) return D(),cb(e);
LOGGER.trace('SQL: transaction begun');
cb(null,{
Q: function(q,a,cb) {
LOGGER.trace({query:q,args:a},'SQL: %s',q);
if(this.over) return cb(new Error('game over'));
if('function'===typeof a) cb=a,a=[];
var t0=new Date();
C.query(q,a,function(e,r) {
var t1=new Date(), dt=t1-t0;
LOGGER.trace({query:q,args:a,ms:dt,rows:r&&r.rowCount,err:e},"SQL query '%s' took %dms",q,dt);
cb(e,r);
});
},
commit: function(cb) {
LOGGER.trace('SQL: commit');
if(this.over) return cb(new Error('game over'));
return (this.over=true),C.query('COMMIT',function(e){D();cb&&cb(e)});
},
rollback: function(cb) {
@@ -130,109 +132,114 @@ var CLIPPERZ = module.exports = function(CONFIG) {
pp.credentials.version,pp.user.header, pp.user.statistics,
pp.user.version, pp.user.lock], function(e,r) {
if(e) return cb(e);
res.res({lock:pp.user.lock,result:'done'});
});
}
break;
case 'handshake':
switch(message) {
case 'connect': return ASYNC.auto({
u: function(cb) { PG.Q(
"SELECT u_id, u_srp_s, u_srp_v FROM clipperz.theuser WHERE u_name=$1",
[ppp.C], function(e,r) {
if(e) return cb(e);
if(!r.rowCount) return cb(null,{u_id:null,u_srp_s:n123,u_srp_v:n123});
cb(null,r.rows[0]);
}) },
otp: ['u',function(cb,r) {
if(!req.session.otp) return cb();
if(req.session.u!=r.u.u_id) return cb(new Error('user/OTP mismatch'));
PG.Q(
"UPDATE clipperz.theotp AS otp"
+" SET"
+" otps_id=CASE WHEN s.otps_code='REQUESTED' THEN ("
+" SELECT ss.otps_id FROM clipperz.otpstatus AS ss WHERE ss.otps_code='USED'"
+" ) ELSE otp.otps_id END,"
+" otp_utime=current_timestamp"
+" FROM clipperz.otpstatus AS s, clipperz.theotp AS o"
+" WHERE"
+" o.otp_id=otp.otp_id AND otp.otps_id=s.otps_id"
+" AND otp.otp_id=$1 AND otp.u_id=$2"
+" RETURNING o.otps_id!=otp.otps_id AS yes, o.otp_ref",
[ req.session.otp, req.session.u ],
function(e,r) {
if(e) return cb(e);
if(!r.rowCount) return cb(new Error('no OTP found'));
r=r.rows[0];
if(!r.yes) return cb(new Error('OTP is in a sorry state'));
cb(null,{ref:r.otp_ref});
});
}]
},function(e,r) {
if(e) return cb(e);
req.session.C = ppp.C; req.session.A = ppp.A;
req.session.s = r.u.u_srp_s; req.session.v = r.u.u_srp_v;
req.session.u = r.u.u_id;
req.session.b = clipperz_random();
- req.session.B = BIGNUM(req.session.v,16).add(srp_g.powm(BIGNUM(req.session.b,16),srp_n)).toString(16);
+ req.session.B = srp_k.mul(BIGNUM(req.session.v,16)).add(srp_g.powm(BIGNUM(req.session.b,16),srp_n)).toString(16);
var rv = {s:req.session.s,B:req.session.B}
if(r.otp && r.otp.otp_ref) rv.oneTimePassword=r.otp.otp_ref;
res.res(rv);
});
case 'credentialCheck':
- var u = clipperz_hash(BIGNUM(req.session.B,16).toString(10));
+ var u = clipperz_hash(BIGNUM(req.session.A,16).toString(10)+BIGNUM(req.session.B,16).toString(10));
var A = BIGNUM(req.session.A,16);
- var S = A.mul(BIGNUM(req.session.v,16).powm(BIGNUM(u,16),srp_n)).powm(
- BIGNUM(req.session.b,16), srp_n);
+ var S = A.mul(BIGNUM(req.session.v,16).powm(BIGNUM(u,16),srp_n)).powm(BIGNUM(req.session.b,16),srp_n);
var K = clipperz_hash(S.toString(10));
- var M1 = clipperz_hash(A.toString(10)+BIGNUM(req.session.B,16).toString(10)+K.toString(16));
+ var M1 = clipperz_hash(
+ srp_hn
+ +clipperz_hash(req.session.C)
+ +BIGNUM(req.session.s,16).toString(10)
+ +A.toString(10)
+ +BIGNUM(req.session.B,16).toString(10)
+ +K );
if(M1!=ppp.M1) return res.res({error:'?'});
req.session.K = K;
var M2 = clipperz_hash(A.toString(10)+M1+K.toString(16));
return res.res({M2:M2,connectionId:'',loginInfo:{latest:{},current:{}},offlineCopyNeeded:false,lock:'----'});
case 'oneTimePassword': return PG.Q(
"UPDATE clipperz.theotp AS otp"
+" SET"
+" otps_id = CASE WHEN s.otps_code!='ACTIVE' THEN s.otps_id ELSE ("
+" SELECT ss.otps_id FROM clipperz.otpstatus AS ss WHERE ss.otps_code=CASE"
+" WHEN otp.otp_key_checksum=$2 THEN 'REQUESTED'"
+" ELSE 'DISABLED' END"
+" ) END,"
+" otp_data = CASE WHEN s.otps_code='ACTIVE' THEN '' ELSE otp.otp_data END,"
+" otp_utime = current_timestamp,"
+" otp_rtime = CASE WHEN otp.otp_key_checksum=$2 THEN current_timestamp ELSE otp.otp_rtime END"
+" FROM clipperz.otpstatus AS s, clipperz.theotp AS o"
+" WHERE"
+" o.otp_id=otp.otp_id AND otp.otps_id=s.otps_id AND otp.otp_key=$1"
+" RETURNING otp.u_id, s.otps_code, otp.otp_id, otp.otp_key_checksum, o.otp_data, otp.otp_version",
[ ppp.oneTimePasswordKey, ppp.oneTimePasswordKeyChecksum ],
function(e,r) {
if(e) return cb(e);
if(!r.rowCount) return cb(new Error('OTP not found'));
r=r.rows[0];
if(r.otp_key_checksum!=ppp.oneTimePasswordKeyChecksum)
return cb(new Error('OTP was disabled because of checksum mismatch'));
if(r.otps_code!='ACTIVE')
return cb(new Error("OTP wasn't active, sorry"));
req.session.u=r.u_id; req.session.otp=r.otp_id;
res.res({data:r.otp_data,version:r.otp_version});
});
}
break;
case 'message':
if(!req.session.K) return res.res({result:'EXCEPTION',message:"effectively, we're missing a aconnection"});
if(req.session.K!=pp.srpSharedSecret) return res.res({error:'Wrong shared secret!'});
switch(message) {
case 'getUserDetails': return ASYNC.parallel({
u: function(cb) {
PG.Q("SELECT u_header,u_statistics,u_version FROM clipperz.theuser WHERE u_id=$1",
[req.session.u],function(e,r) {
if(e) return cb(e);
if(!r.rowCount) return cb(new Error("user's gone AWOL"));
cb(null,r.rows[0]);
});
},