Diffstat (limited to 'backend/node/src/clipperz.js') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | backend/node/src/clipperz.js | 537 |
1 files changed, 537 insertions, 0 deletions
diff --git a/backend/node/src/clipperz.js b/backend/node/src/clipperz.js new file mode 100644 index 0000000..6c13f16 --- a/dev/null +++ b/backend/node/src/clipperz.js @@ -0,0 +1,537 @@ +var FS = require('fs'); +var CRYPTO = require('crypto'); +var BIGNUM = require('bignum'); +var ASYNC = require('async'); + +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); +}; +var srp_g = BIGNUM(2); +var srp_n = BIGNUM("115b8b692e0e045692cf280b436735c77a5a9e8a9e7ed56c965f87db5b2a2ece3",16); +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},"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); + 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},"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) LOGGER.trace(e,"rolling back transaction due to an error"),this.rollback(cb); + this.commit(cb); + } + }); + }); + }); + } + }; + + + return { + + 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); + 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); + 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 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(A.toString(10)+BIGNUM(req.session.B,16).toString(10)+K.toString(16)); + 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:{}},offlineCopyNeededd: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:JSON.stringify(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); + }, + 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:ppp.user.lock}); + }); + }); + }); + + case 'upgradeUserCredentials': return PG.T(function(e,T) { + if(e) return cb(e); + ASYNC.parallel({ + user: function(cb) { + var u = ppp.user, c = ppp.credentials; + T.Q( + "UPDATE clipperz.theuser" + +" SET u_header=$1, u_statistics=$2, u_version=$3, u_lock=COALESCE($4,u_lock)," + +" u_name=$5, u_srp_s=$6, u_srp_v=$7, u_authversion=$8" + +" WHERE u_id=$9 RETURNING u_lock", + [ u.header,u.statistics,u.version,u.lock||null, + c.C,c.s,c.v,c.version, req.session.u ],function(e,r) { + if(e) return cb(e); + if(!r.rowCount) return cb(new Error("user's gone AWOL")); + cb(e,r.rows[0]); + }); + }, + otp: function(cb) { + var otps=ppp.oneTimePasswords; + if(!otps) return cb(); + ASYNC.each(Object.keys(otps),function(r,cb) { + T.Q( + "UPDATE clipperz.theotp" + +" SET otp_data=$1, otp_utime=current_timestamp WHERE otp_ref=$2 AND u_id=$3", + [ otps[r], r, req.session.u ], function(e,r) { + if(e) return cb(e); + if(!r.rowCount) return cb(new Error("OTP's gone AWOL")); + cb(); + }); + },cb); + } + },function(e,r) { + T.end(e, function(e) { + if(e) return cb(e); + res.res({result:'done',lock:r.user.u_lock}); + }); + }); + }); + + case 'deleteUser': return PG.Q( + "DELETE FROM clipperz.theuser WHERE u_id=$1", + [req.session.u],function(e,r) { + if(e) return cb(e); + res.res({result:'ok'}); + }); + + case 'echo': return res.res({result:ppp}); + case 'getOneTimePasswordsDetails': return res.res({}); + case 'getLoginHistory': return res.res({result:[]}); + } + break; + case 'logout': return req.session.destroy(function(e){res.res({})}); + } + cb(); + }, + + dump: function(req,res,cb) { + if(!req.session.u) return cb(new Error('logging in helps')); + return ASYNC.parallel({ + u: function(cb) { + PG.Q( + "SELECT" + +" u_name, u_srp_s, u_srp_v, u_authversion, 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")); + r = r.rows[0]; + return cb(null,{u:r.u_name,d:{s:r.u_srp_s,v:r.u_srp_v, version:r.u_authversion, + maxNumberOfRecords: '100', userDetails: JSON.stringify(r.u_header), + statistics: r.u_statistics, userDetailsVersion: r.u_version + }}); + }); + }, + records: function(cb) { + PG.Q( + "SELECT" + +" r.r_id, r.r_ref, r_data, r_version, r_ctime, r_mtime, r_atime," + +" rv.rv_id, rv.rv_ref AS rv_ref, rv_header, rv_data, rv_version, rv_ctime, rv_mtime, rv_atime" + +" FROM" + +" clipperz.therecord AS r" + +" LEFT JOIN clipperz.therecordversion AS rv USING (r_id)" + +" WHERE r.u_id=$1" + +" ORDER BY r.r_id ASC, rv.rv_id ASC", [req.session.u],function(e,r) { + if(e) return cb(e); + var rv = {}; + r.rows.forEach(function(r) { + if(!rv[r.r_ref]) rv[r.r_ref] = { + data: r.r_data, version: r.r_version, + creationDate: r.r_ctime.toString(), + updateDate: r.r_mtime.toString(), + accessDate: r.r_atime.toString(), + versions: {} + }; + if(!r.rv_id) return; + rv[r.r_ref].versions[rv[r.r_ref].currentVersion=r.rv_ref] = { + header: r.rv_header, data: r.rv_data, version: r.rv_version, + creationDate: r.rv_ctime.toString(), + updateDate: r.rv_mtime.toString(), + accessDate: r.rv_atime.toString() + }; + }); + cb(null,rv); + }); + }, + html: function(cb) { + FS.readFile(CONFIG.dump_template,{encoding:'utf-8'},cb); + } + },function(e,r) { + if(e) return cb(e); + var d = new Date(); + res.attachment('Clipperz_'+d.getFullYear()+'_'+(d.getMonth()+1)+'_'+d.getDate()+'.html'); + var ojs = { users: { + catchAllUser: { __masterkey_test_value__: 'masterkey', s: n123, v: n123 } + } }; + r.u.d.records = r.records; + ojs.users[r.u.u] = r.u.d; + res.send(r.html.replace('/*offline_data_placeholder*/', + "_clipperz_dump_data_="+JSON.stringify(ojs) + +";" + +"Clipperz.PM.Proxy.defaultProxy = new Clipperz.PM.Proxy.Offline();" + +"Clipperz.Crypto.PRNG.defaultRandomGenerator().fastEntropyAccumulationForTestingPurpose();")); + }); + } + }; + +}; |