web: Add websocket filter

This commit is contained in:
Sachin Kelkar 2017-03-06 10:20:11 +05:30
parent 22154dee5c
commit fa96a1d1ef
2 changed files with 111 additions and 84 deletions

View File

@ -131,37 +131,40 @@ module.exports = (function() {
peg$c92 = "~u",
peg$c93 = { type: "literal", value: "~u", description: "\"~u\"" },
peg$c94 = function(s) { return url(s); },
peg$c95 = { type: "other", description: "integer" },
peg$c96 = /^['"]/,
peg$c97 = { type: "class", value: "['\"]", description: "['\"]" },
peg$c98 = /^[0-9]/,
peg$c99 = { type: "class", value: "[0-9]", description: "[0-9]" },
peg$c100 = function(digits) { return parseInt(digits.join(""), 10); },
peg$c101 = { type: "other", description: "string" },
peg$c102 = "\"",
peg$c103 = { type: "literal", value: "\"", description: "\"\\\"\"" },
peg$c104 = function(chars) { return chars.join(""); },
peg$c105 = "'",
peg$c106 = { type: "literal", value: "'", description: "\"'\"" },
peg$c107 = /^["\\]/,
peg$c108 = { type: "class", value: "[\"\\\\]", description: "[\"\\\\]" },
peg$c109 = { type: "any", description: "any character" },
peg$c110 = function(char) { return char; },
peg$c111 = "\\",
peg$c112 = { type: "literal", value: "\\", description: "\"\\\\\"" },
peg$c113 = /^['\\]/,
peg$c114 = { type: "class", value: "['\\\\]", description: "['\\\\]" },
peg$c115 = /^['"\\]/,
peg$c116 = { type: "class", value: "['\"\\\\]", description: "['\"\\\\]" },
peg$c117 = "n",
peg$c118 = { type: "literal", value: "n", description: "\"n\"" },
peg$c119 = function() { return "\n"; },
peg$c120 = "r",
peg$c121 = { type: "literal", value: "r", description: "\"r\"" },
peg$c122 = function() { return "\r"; },
peg$c123 = "t",
peg$c124 = { type: "literal", value: "t", description: "\"t\"" },
peg$c125 = function() { return "\t"; },
peg$c95 = "~websocket",
peg$c96 = { type: "literal", value: "~websocket", description: "\"~websocket\"" },
peg$c97 = function() { return websocketFilter; },
peg$c98 = { type: "other", description: "integer" },
peg$c99 = /^['"]/,
peg$c100 = { type: "class", value: "['\"]", description: "['\"]" },
peg$c101 = /^[0-9]/,
peg$c102 = { type: "class", value: "[0-9]", description: "[0-9]" },
peg$c103 = function(digits) { return parseInt(digits.join(""), 10); },
peg$c104 = { type: "other", description: "string" },
peg$c105 = "\"",
peg$c106 = { type: "literal", value: "\"", description: "\"\\\"\"" },
peg$c107 = function(chars) { return chars.join(""); },
peg$c108 = "'",
peg$c109 = { type: "literal", value: "'", description: "\"'\"" },
peg$c110 = /^["\\]/,
peg$c111 = { type: "class", value: "[\"\\\\]", description: "[\"\\\\]" },
peg$c112 = { type: "any", description: "any character" },
peg$c113 = function(char) { return char; },
peg$c114 = "\\",
peg$c115 = { type: "literal", value: "\\", description: "\"\\\\\"" },
peg$c116 = /^['\\]/,
peg$c117 = { type: "class", value: "['\\\\]", description: "['\\\\]" },
peg$c118 = /^['"\\]/,
peg$c119 = { type: "class", value: "['\"\\\\]", description: "['\"\\\\]" },
peg$c120 = "n",
peg$c121 = { type: "literal", value: "n", description: "\"n\"" },
peg$c122 = function() { return "\n"; },
peg$c123 = "r",
peg$c124 = { type: "literal", value: "r", description: "\"r\"" },
peg$c125 = function() { return "\r"; },
peg$c126 = "t",
peg$c127 = { type: "literal", value: "t", description: "\"t\"" },
peg$c128 = function() { return "\t"; },
peg$currPos = 0,
peg$savedPos = 0,
@ -1367,6 +1370,20 @@ module.exports = (function() {
peg$currPos = s0;
s0 = peg$FAILED;
}
if (s0 === peg$FAILED) {
s0 = peg$currPos;
if (input.substr(peg$currPos, 10) === peg$c95) {
s1 = peg$c95;
peg$currPos += 10;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c96); }
}
if (s1 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c97();
}
s0 = s1;
if (s0 === peg$FAILED) {
s0 = peg$currPos;
s1 = peg$parseStringLiteral();
@ -1399,6 +1416,7 @@ module.exports = (function() {
}
}
}
}
return s0;
}
@ -1408,53 +1426,53 @@ module.exports = (function() {
peg$silentFails++;
s0 = peg$currPos;
if (peg$c96.test(input.charAt(peg$currPos))) {
if (peg$c99.test(input.charAt(peg$currPos))) {
s1 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c97); }
if (peg$silentFails === 0) { peg$fail(peg$c100); }
}
if (s1 === peg$FAILED) {
s1 = null;
}
if (s1 !== peg$FAILED) {
s2 = [];
if (peg$c98.test(input.charAt(peg$currPos))) {
if (peg$c101.test(input.charAt(peg$currPos))) {
s3 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s3 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c99); }
if (peg$silentFails === 0) { peg$fail(peg$c102); }
}
if (s3 !== peg$FAILED) {
while (s3 !== peg$FAILED) {
s2.push(s3);
if (peg$c98.test(input.charAt(peg$currPos))) {
if (peg$c101.test(input.charAt(peg$currPos))) {
s3 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s3 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c99); }
if (peg$silentFails === 0) { peg$fail(peg$c102); }
}
}
} else {
s2 = peg$FAILED;
}
if (s2 !== peg$FAILED) {
if (peg$c96.test(input.charAt(peg$currPos))) {
if (peg$c99.test(input.charAt(peg$currPos))) {
s3 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s3 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c97); }
if (peg$silentFails === 0) { peg$fail(peg$c100); }
}
if (s3 === peg$FAILED) {
s3 = null;
}
if (s3 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c100(s2);
s1 = peg$c103(s2);
s0 = s1;
} else {
peg$currPos = s0;
@ -1471,7 +1489,7 @@ module.exports = (function() {
peg$silentFails--;
if (s0 === peg$FAILED) {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c95); }
if (peg$silentFails === 0) { peg$fail(peg$c98); }
}
return s0;
@ -1483,11 +1501,11 @@ module.exports = (function() {
peg$silentFails++;
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 34) {
s1 = peg$c102;
s1 = peg$c105;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c103); }
if (peg$silentFails === 0) { peg$fail(peg$c106); }
}
if (s1 !== peg$FAILED) {
s2 = [];
@ -1498,15 +1516,15 @@ module.exports = (function() {
}
if (s2 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 34) {
s3 = peg$c102;
s3 = peg$c105;
peg$currPos++;
} else {
s3 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c103); }
if (peg$silentFails === 0) { peg$fail(peg$c106); }
}
if (s3 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c104(s2);
s1 = peg$c107(s2);
s0 = s1;
} else {
peg$currPos = s0;
@ -1523,11 +1541,11 @@ module.exports = (function() {
if (s0 === peg$FAILED) {
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 39) {
s1 = peg$c105;
s1 = peg$c108;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c106); }
if (peg$silentFails === 0) { peg$fail(peg$c109); }
}
if (s1 !== peg$FAILED) {
s2 = [];
@ -1538,15 +1556,15 @@ module.exports = (function() {
}
if (s2 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 39) {
s3 = peg$c105;
s3 = peg$c108;
peg$currPos++;
} else {
s3 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c106); }
if (peg$silentFails === 0) { peg$fail(peg$c109); }
}
if (s3 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c104(s2);
s1 = peg$c107(s2);
s0 = s1;
} else {
peg$currPos = s0;
@ -1585,7 +1603,7 @@ module.exports = (function() {
}
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c104(s2);
s1 = peg$c107(s2);
s0 = s1;
} else {
peg$currPos = s0;
@ -1600,7 +1618,7 @@ module.exports = (function() {
peg$silentFails--;
if (s0 === peg$FAILED) {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c101); }
if (peg$silentFails === 0) { peg$fail(peg$c104); }
}
return s0;
@ -1612,12 +1630,12 @@ module.exports = (function() {
s0 = peg$currPos;
s1 = peg$currPos;
peg$silentFails++;
if (peg$c107.test(input.charAt(peg$currPos))) {
if (peg$c110.test(input.charAt(peg$currPos))) {
s2 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c108); }
if (peg$silentFails === 0) { peg$fail(peg$c111); }
}
peg$silentFails--;
if (s2 === peg$FAILED) {
@ -1632,11 +1650,11 @@ module.exports = (function() {
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c109); }
if (peg$silentFails === 0) { peg$fail(peg$c112); }
}
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c110(s2);
s1 = peg$c113(s2);
s0 = s1;
} else {
peg$currPos = s0;
@ -1649,17 +1667,17 @@ module.exports = (function() {
if (s0 === peg$FAILED) {
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 92) {
s1 = peg$c111;
s1 = peg$c114;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c112); }
if (peg$silentFails === 0) { peg$fail(peg$c115); }
}
if (s1 !== peg$FAILED) {
s2 = peg$parseEscapeSequence();
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c110(s2);
s1 = peg$c113(s2);
s0 = s1;
} else {
peg$currPos = s0;
@ -1680,12 +1698,12 @@ module.exports = (function() {
s0 = peg$currPos;
s1 = peg$currPos;
peg$silentFails++;
if (peg$c113.test(input.charAt(peg$currPos))) {
if (peg$c116.test(input.charAt(peg$currPos))) {
s2 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c114); }
if (peg$silentFails === 0) { peg$fail(peg$c117); }
}
peg$silentFails--;
if (s2 === peg$FAILED) {
@ -1700,11 +1718,11 @@ module.exports = (function() {
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c109); }
if (peg$silentFails === 0) { peg$fail(peg$c112); }
}
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c110(s2);
s1 = peg$c113(s2);
s0 = s1;
} else {
peg$currPos = s0;
@ -1717,17 +1735,17 @@ module.exports = (function() {
if (s0 === peg$FAILED) {
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 92) {
s1 = peg$c111;
s1 = peg$c114;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c112); }
if (peg$silentFails === 0) { peg$fail(peg$c115); }
}
if (s1 !== peg$FAILED) {
s2 = peg$parseEscapeSequence();
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c110(s2);
s1 = peg$c113(s2);
s0 = s1;
} else {
peg$currPos = s0;
@ -1762,11 +1780,11 @@ module.exports = (function() {
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c109); }
if (peg$silentFails === 0) { peg$fail(peg$c112); }
}
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c110(s2);
s1 = peg$c113(s2);
s0 = s1;
} else {
peg$currPos = s0;
@ -1783,30 +1801,16 @@ module.exports = (function() {
function peg$parseEscapeSequence() {
var s0, s1;
if (peg$c115.test(input.charAt(peg$currPos))) {
if (peg$c118.test(input.charAt(peg$currPos))) {
s0 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c116); }
if (peg$silentFails === 0) { peg$fail(peg$c119); }
}
if (s0 === peg$FAILED) {
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 110) {
s1 = peg$c117;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c118); }
}
if (s1 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c119();
}
s0 = s1;
if (s0 === peg$FAILED) {
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 114) {
s1 = peg$c120;
peg$currPos++;
} else {
@ -1820,7 +1824,7 @@ module.exports = (function() {
s0 = s1;
if (s0 === peg$FAILED) {
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 116) {
if (input.charCodeAt(peg$currPos) === 114) {
s1 = peg$c123;
peg$currPos++;
} else {
@ -1832,6 +1836,20 @@ module.exports = (function() {
s1 = peg$c125();
}
s0 = s1;
if (s0 === peg$FAILED) {
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 116) {
s1 = peg$c126;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c127); }
}
if (s1 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c128();
}
s0 = s1;
}
}
}
@ -1945,7 +1963,7 @@ module.exports = (function() {
function destinationFilter(flow){
return (!!flow.server_conn.address)
&&
regex.test(flow.server_conn.address.address[0] + ":" + flow.server_conn.address.address[1]);
regex.test(flow.server_conn.address[0] + ":" + flow.server_conn.address[1]);
}
destinationFilter.desc = "destination address matches " + regex;
return destinationFilter;
@ -2011,7 +2029,7 @@ module.exports = (function() {
function sourceFilter(flow){
return (!!flow.client_conn.address)
&&
regex.test(flow.client_conn.address.address[0] + ":" + flow.client_conn.address.address[1]);
regex.test(flow.client_conn.address[0] + ":" + flow.client_conn.address[1]);
}
sourceFilter.desc = "source address matches " + regex;
return sourceFilter;
@ -2056,6 +2074,10 @@ module.exports = (function() {
urlFilter.desc = "url matches " + regex;
return urlFilter;
}
function websocketFilter(flow){
return flow.type === "websocket";
}
websocketFilter.desc = "is a Websocket Flow";
peg$result = peg$startRuleFunction();

View File

@ -217,6 +217,10 @@ function url(regex){
urlFilter.desc = "url matches " + regex;
return urlFilter;
}
function websocketFilter(flow){
return flow.type === "websocket";
}
websocketFilter.desc = "is a Websocket Flow";
}
start "filter expression"
@ -278,6 +282,7 @@ Expr
/ "~tq" ws+ s:StringLiteral { return requestContentType(s); }
/ "~ts" ws+ s:StringLiteral { return responseContentType(s); }
/ "~u" ws+ s:StringLiteral { return url(s); }
/ "~websocket" { return websocketFilter; }
/ s:StringLiteral { return url(s); }
IntegerLiteral "integer"