renge/CSE505
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fix: add try catch

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This commit is contained in:
Renge 2024-04-17 19:50:31 -04:00
parent 9ffb9e334c
commit b49cfbc816
1 changed files with 223 additions and 192 deletions
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73
Project/index.js
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@ -12,7 +12,7 @@ const spf = (req, res) => {
let spf = "" let spf = ""
dns.resolveTxt(domain, (err, address) => { dns.resolveTxt(domain, (err, address) => {
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
return res.status(400).send("ERROR: occur on resolving SPF") return res.status(400).send("ERROR: occur on resolving SPF")
} }
else { else {
@ -27,15 +27,17 @@ const spf = (req, res) => {
} }
} }
if (!spf) { if (!spf) {
console.error("ERROR: not spf")
return res.status(400).send(`ERROR: No SPF record found in ${domain}`) return res.status(400).send(`ERROR: No SPF record found in ${domain}`)
} }
const spfArray = spf.split(" "); const spfArray = spf.split(" ");
console.log(spfArray) console.log(spfArray)
return parseSPF(domain, spfArray, swipl, domain, (err) => { return parseSPF(domain, spfArray, swipl, domain, (err) => {
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
return res.status(err.code).send(err.message) return res.status(err.code).send(err.message)
} }
else {
swipl.call('assert(ip("_", "_"))'); swipl.call('assert(ip("_", "_"))');
swipl.call('assert(nip("_", "_"))'); swipl.call('assert(nip("_", "_"))');
swipl.call('assert(all("_", "_"))'); swipl.call('assert(all("_", "_"))');
@ -50,7 +52,8 @@ const spf = (req, res) => {
query.close(); query.close();
swipl.cleanup() swipl.cleanup()
swipl.initialise() swipl.initialise()
return res.status(200).send(result) return res.status(200).send([...new Set(result)])
}
}) })
}) })
} }
@ -60,6 +63,7 @@ const spf = (req, res) => {
} }
const parseSPF = (domain, spf, swipl, curr, callback) => { const parseSPF = (domain, spf, swipl, curr, callback) => {
try {
console.log(domain, spf, curr) console.log(domain, spf, curr)
let err = undefined let err = undefined
@ -88,26 +92,30 @@ const parseSPF = (domain, spf, swipl, curr, callback) => {
console.log("matched a!") console.log("matched a!")
return dns.lookup(domain, (err, address, family) => { return dns.lookup(domain, (err, address, family) => {
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
err = { code: 400, message: "ERROR: occur on resolving a" } err = { code: 400, message: "ERROR: occur on resolving a" }
return callback(err); return callback(err);
} }
else {
swipl.call(`assert(ip(${domain}, "${address}"))`); swipl.call(`assert(ip(${domain}, "${address}"))`);
console.log(`assert(ip(${domain}, "${address}"))`); console.log(`assert(ip(${domain}, "${address}"))`);
return parseSPF(domain, spf.slice(1), swipl, curr, callback); return parseSPF(domain, spf.slice(1), swipl, curr, callback);
}
}); });
} }
else if (str.match("^-a$")) { else if (str.match("^-a$")) {
console.log("matched -a!") console.log("matched -a!")
return dns.lookup(domain, (err, address, family) => { return dns.lookup(domain, (err, address, family) => {
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
err = { code: 400, message: "ERROR: occur on resolving a" } err = { code: 400, message: "ERROR: occur on resolving a" }
return callback(err); return callback(err);
} }
else {
swipl.call(`assert(nip(${domain}, "${address}"))`); swipl.call(`assert(nip(${domain}, "${address}"))`);
console.log(`assert(nip(${domain}, "${address}"))`); console.log(`assert(nip(${domain}, "${address}"))`);
return parseSPF(domain, spf.slice(1), swipl, curr, callback); return parseSPF(domain, spf.slice(1), swipl, curr, callback);
}
}); });
} }
@ -119,12 +127,14 @@ const parseSPF = (domain, spf, swipl, curr, callback) => {
const mx = address[i].exchange; const mx = address[i].exchange;
dns.lookup(mx, (err, address, family) => { dns.lookup(mx, (err, address, family) => {
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
err = { code: 400, message: "ERROR: occur on resolving mx" } err = { code: 400, message: "ERROR: occur on resolving mx" }
return callback(err); return callback(err);
} }
else {
swipl.call(`assert(ip(${domain}, "${address}"))`); swipl.call(`assert(ip(${domain}, "${address}"))`);
return parseSPF(domain, spf.slice(1), swipl, curr, callback); return parseSPF(domain, spf.slice(1), swipl, curr, callback);
}
}); });
} }
}) })
@ -136,26 +146,28 @@ const parseSPF = (domain, spf, swipl, curr, callback) => {
const mx = address[i].exchange; const mx = address[i].exchange;
dns.lookup(mx, (err, address, family) => { dns.lookup(mx, (err, address, family) => {
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
err = { code: 400, message: "ERROR: occur on resolving mx" } err = { code: 400, message: "ERROR: occur on resolving mx" }
return callback(err); return callback(err);
} }
else {
swipl.call(`assert(nip(${domain}, "${address}"))`); swipl.call(`assert(nip(${domain}, "${address}"))`);
return parseSPF(domain, spf.slice(1), swipl, curr, callback); return parseSPF(domain, spf.slice(1), swipl, curr, callback);
}
}); });
} }
}) })
} }
//include //include
else if (str.match("^include:(.+)$")) { else if (str.match("^[+~?]?include:(.+)$")) {
next = str.match("^include:(.+)$")[1] next = str.match("^[+~?]?include:(.+)$")[1]
console.log("matched include:", next) console.log("matched include:", next)
let txt = "" let txt = ""
dns.resolveTxt(next, (err, address) => { dns.resolveTxt(next, (err, address) => {
console.log("hello") console.log("hello")
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
err = { code: 400, message: "ERROR: occur on resolving SPF" } err = { code: 400, message: "ERROR: occur on resolving SPF" }
return callback(err); return callback(err);
} }
@ -174,26 +186,31 @@ const parseSPF = (domain, spf, swipl, curr, callback) => {
err = { code: 400, message: "ERROR: Fail to find SPF record" } err = { code: 400, message: "ERROR: Fail to find SPF record" }
return callback(err); return callback(err);
} }
else {
const spfArray = txt.split(" "); const spfArray = txt.split(" ");
console.log(spfArray) console.log(spfArray)
return parseSPF(domain, spfArray, swipl, next, (err) => { return parseSPF(domain, spfArray, swipl, next, (err) => {
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
return res.status(err.code).send(err.message) err = { code: 400, message: "ERROR: occur on redirect" }
return callback(err);
} }
else {
return parseSPF(domain, spf.slice(1), swipl, curr, callback); return parseSPF(domain, spf.slice(1), swipl, curr, callback);
}
}) })
}
}) })
} }
//redirect //redirect
else if (str.match("^redirect=(.+)$")) { else if (str.match("^[+~?]?redirect=(.+)$")) {
next = str.match("^redirect=(.+)$")[1] next = str.match("^[+~?]?redirect=(.+)$")[1]
console.log("matched redirect:", next) console.log("matched redirect:", next)
let txt = "" let txt = ""
dns.resolveTxt(next, (err, address) => { dns.resolveTxt(next, (err, address) => {
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
err = { code: 400, message: "ERROR: occur on resolving SPF" } err = { code: 400, message: "ERROR: occur on resolving SPF" }
return callback(err); return callback(err);
} }
@ -216,8 +233,9 @@ const parseSPF = (domain, spf, swipl, curr, callback) => {
console.log(spfArray) console.log(spfArray)
return parseSPF(domain, spfArray, swipl, domain, (err) => { return parseSPF(domain, spfArray, swipl, domain, (err) => {
if (err) { if (err) {
console.error(err) console.error("ERROR", err)
return res.status(err.code).send(err.message) err = { code: 400, message: "ERROR: occur on redirect" }
return callback(err);
} }
else { else {
return parseSPF(domain, spf.slice(1), swipl, curr, callback); return parseSPF(domain, spf.slice(1), swipl, curr, callback);
@ -239,23 +257,34 @@ const parseSPF = (domain, spf, swipl, curr, callback) => {
return parseSPF(domain, spf.slice(1), swipl, curr, callback); return parseSPF(domain, spf.slice(1), swipl, curr, callback);
} }
} }
catch (e) {
console.log(e)
}
}
app.get('/spf', spf) app.get('/spf', spf)
app.listen(PORT, (err) => { app.listen(PORT, (err) => {
if (err) { if (err) {
return console.error(err); return console.error("ERROR", err);
} }
else {
return console.log(`Server is listening on ${PORT}`); return console.log(`Server is listening on ${PORT}`);
}
}); });
//test //test
// const spfArray = "v=spf1 include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com ~all".split(" "); // const spfArray = "v=spf1 include:spf1.baidu.com include:spf2.baidu.com include:spf3.baidu.com include:spf4.baidu.com mx ptr -all".split(" ");
// const domain = "gmail.com" // const domain = "baidu.com"
// parseSPF(domain, spfArray, swipl, domain, (err) => { // parseSPF(domain, spfArray, swipl, domain, (err) => {
// if (err) { // if (err) {
// return res.status(err.code).send(err.message) // return res.status(err.code).send(err.message)
// } // }
// else {
// swipl.call('assert(ip("_", "_"))');
// swipl.call('assert(nip("_", "_"))');
// swipl.call('assert(all("_", "_"))');
// swipl.call('assert((allowed_to_send_email(Domain, IP) :- (ip(Domain, IP)), once(\\+ all(Domain, "-"); \\+ nip(Domain, IP))))');
// const query = new swipl.Query(`allowed_to_send_email(${domain}, IP)`); // const query = new swipl.Query(`allowed_to_send_email(${domain}, IP)`);
// let ret = null; // let ret = null;
// let result = [] // let result = []
@ -264,5 +293,7 @@ app.listen(PORT, (err) => {
// result.push(`${ret.IP}`); // result.push(`${ret.IP}`);
// } // }
// query.close(); // query.close();
// // return res.status(200).send(result) // swipl.cleanup()
// swipl.initialise()
// }
// }); // });