| -rw-r--r-- | backend/node/src/clipperz.js | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/backend/node/src/clipperz.js b/backend/node/src/clipperz.js index 72b6c9f..842de31 100644 --- a/backend/node/src/clipperz.js +++ b/backend/node/src/clipperz.js @@ -1,431 +1,433 @@ 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) { LOGGER.trace('SQL: rollback'); if(this.over) return cb(new Error('game over')); return (this.over=true),C.query('ROLLBACK',function(e){D();cb&&cb(e)}); }, end: function(e,cb) { if(e) return LOGGER.trace(e,"rolling back transaction due to an error"),this.rollback(cb); this.commit(cb); } }); }); }); } }; var rv = { json: function clipperz_json(req,res,cb) { var method = req.body.method, pp = JSON.parse(req.body.parameters).parameters; var message = pp.message; var ppp = pp.parameters; res.res = function(o) { return res.json({result:o}) }; LOGGER.trace({method:method,parameters:pp},"JSON request"); switch(method) { case 'registration': switch(message) { case 'completeRegistration': return PG.Q( "INSERT INTO clipperz.theuser" +" (u_name, u_srp_s,u_srp_v, u_authversion,u_header,u_statistics,u_version,u_lock)" +" VALUES ($1, $2,$3, $4,$5,$6,$7,$8)", [pp.credentials.C, pp.credentials.s, pp.credentials.v, 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); + var A = BIGNUM(ppp.A,16); + if(A.eq(0)) return cb(new Error('Ground Zero')); 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 = 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.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 K = clipperz_hash(S.toString(10)); 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]); }); }, stats: function(cb) { PG.Q("SELECT r_ref,r_mtime FROM clipperz.therecord WHERE u_id=$1", [req.session.u],function(e,r) { if(e) return cb(e); cb(null,r.rows.reduce(function(p,r){p[r.r_ref]={updateDate:r.r_mtime};return p},{})); }); } },function(e,r) { if(e) return cb(e); res.res({header:r.u.u_header,statistics:r.u.u_statistics,version:r.u.u_version,recordsStats:r.stats}); }); case 'saveChanges': return PG.T(function(e,T) { if(e) return cb(e); ASYNC.auto({ user: function(cb) { T.Q( "UPDATE clipperz.theuser" +" SET u_header=$1, u_statistics=$2, u_version=$3, u_lock=COALESCE($4,u_lock)" +" WHERE u_id=$5" +" RETURNING u_lock",[ppp.user.header,ppp.user.statistics,ppp.user.version,ppp.user.lock||null,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]); }); }, updaterecords: function(cb) { if(!(ppp.records && ppp.records.updated && ppp.records.updated.length)) return cb(); ASYNC.each(ppp.records.updated,function(r,cb) { ASYNC.auto({ updater: function(cb) { T.Q( "UPDATE clipperz.therecord" +" SET r_data=$2, r_version=$3, r_mtime=current_timestamp" +" WHERE r_ref=$1 AND u_id=$4 RETURNING r_id", [r.record.reference,r.record.data,r.record.version,req.session.u], function(e,r) { if(e) return cb(e); return cb(null,r.rows.length?r.rows[0]:null); }); }, insertr: ['updater',function(cb,rr) { if(rr.updater) return cb(); T.Q( "INSERT INTO clipperz.therecord" +" (u_id,r_ref,r_data,r_version)" +" VALUES ($1,$2,$3,$4) RETURNING r_id",[req.session.u,r.record.reference,r.record.data,r.record.version], function(e,r) { if(e) return cb(e); return cb(null,r.rows[0]); }); }], updatev: ['updater','insertr',function(cb,rr) { var crv=r.currentRecordVersion; T.Q( "UPDATE clipperz.therecordversion" +" SET rv_ref=$1, rv_data=$2, rv_version=$3," +" rv_previous_id=COALESCE($4,rv_previous_id)," +" rv_previous_key=$5, r_id=$6, rv_mtime=current_timestamp" +" WHERE" +" rv_id=(SELECT rv_id FROM clipperz.therecordversion WHERE r_id=$6 ORDER BY r_id ASC LIMIT 1)" +" RETURNING rv_id", [crv.reference,crv.data,crv.version, crv.previousVersion||null,crv.previousVersionKey, (rr.updater||rr.insertr).r_id], function(e,r) { if(e) return cb(e); return cb(null,r.rows.length?r.rows[0]:null); }); }], insertv: ['updatev',function(cb,rr) { if(rr.updatev) return cb(); var crv=r.currentRecordVersion; T.Q( "INSERT INTO clipperz.therecordversion" +" (r_id,rv_ref,rv_data,rv_version,rv_previous_id,rv_previous_key)" +" VALUES ($1,$2,$3,$4,$5,$6) RETURNING rv_id", [(rr.updater||rr.insertr).r_id, crv.reference, crv.data, crv.version, crv.previousVersion||null,crv.previousVersionKey], function(e,r) { if(e) return cb(e); return cb(null,r.rows[0]); }); }] },cb); },cb); }, deleterecords: function(cb) { if(!(ppp.records && ppp.records.deleted && ppp.records.deleted.length)) return cb(); T.Q( "DELETE FROM clipperz.therecord" +" WHERE r_ref = ANY($1::text[]) AND u_id=$2", [ '{'+ppp.records.deleted.join(',')+'}', req.session.u ], cb); } },function(e,r) { T.end(e, function(e) { if(e) return cb(e); res.res({result:'done',lock:r.user.u_lock}); }); }); }); case 'getRecordDetail': return ASYNC.auto({ // TODO: could be done in one query instead record: function(cb) { PG.Q( "SELECT r_id,r_ref,r_data,r_version, r_ctime, r_mtime, r_atime FROM clipperz.therecord WHERE r_ref=$1", [ppp.reference],function(e,r) { if(e) return cb(e); if(!r.rowCount) return cb(new Error('no record found')); return cb(null,r.rows[0]); }); }, version: ['record',function(cb,r) { PG.Q( "SELECT rv_ref, rv_data, rv_header, rv_version, rv_ctime, rv_mtime, rv_atime" +" FROM clipperz.therecordversion WHERE r_id=$1 ORDER BY rv_id ASC LIMIT 1", [r.record.r_id],function(e,r) { if(e) return cb(e); if(!r.rowCount) return cb(new Error('no record version found')); return cb(null,r.rows[0]); }); }] },function(e,r) { if(e) return cb(e); var v = {}; v[r.version.rv_ref] = { reference: r.version.rv_ref, data: r.version.rv_data, header: r.version.rv_header, version: r.version.rv_version, creationDate: r.version.rv_ctime, updateDate: r.version.rv_mtime, accessDate: r.version.rv_atime }; res.res({ versions: v, currentVersion: r.version.rv_ref, reference: r.record.r_ref, data: r.record.r_data, version: r.record.r_version, creationDate: r.record.r_ctime, updateDate: r.record.r_mtime, accessDate: r.record.r_atime, oldestUsedEncryptedVersion: '---' }); }); case 'addNewOneTimePassword': return PG.T(function(e,T) { if(e) return cb(e); ASYNC.parallel({ otp: function(cb) { var otp = ppp.oneTimePassword; T.Q( "INSERT INTO clipperz.theotp" +" (u_id,otp_ref,otp_key,otp_key_checksum,otp_data,otp_version,otps_id)" +" SELECT $1,$2,$3,$4,$5,$6,otps_id FROM clipperz.otpstatus" +" WHERE otps_code='ACTIVE'", [ req.session.u, otp.reference, otp.key, otp.keyChecksum, otp.data, otp.version], function(e,r) { if(e) return cb(e); if(!r.rowCount) return cb(new Error('no user or status')); cb(); }); }, user: function(cb) { var u = ppp.user; T.Q( "UPDATE clipperz.theuser" +" SET u_header=$1, u_statistics=$2, u_version=$3, u_lock=COALESCE($4,u_lock)" +" WHERE u_id=$5", [ u.header, u.statistics, u.version, u.lock||null, req.session.u], function(e,r) { if(e) return cb(e); if(!r.rowCount) return cb(new Error("user's gone AWOL")); cb(); }); } },function(e,r) { T.end(e, function(e) { if(e) return cb(e); res.res({result:'done',lock:ppp.user.lock}); }); }); }); case 'updateOneTimePasswords': return PG.T(function(e,T) { if(e) return cb(e); ASYNC.parallel({ otp: function(cb) { T.Q( "DELETE FROM clipperz.theotp" +" WHERE u_id=$1" +" AND NOT otp_ref = ANY($2::text[])", [ req.session.u,'{'+ppp.oneTimePasswords.join(',')+'}' ],cb); }, |