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dig.js
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allow empty string for query

This commit is contained in:
AJ ONeal 2017-12-15 01:54:39 -07:00
parent 22f5297582
commit 6e7a0c57c8
1 changed files with 35 additions and 21 deletions
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56
bin/dig.js
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@ -22,7 +22,7 @@ cli.parse({
, 'nameserver': [ false, 'the nameserver to use for DNS resolution (defaults to ' + defaultNameservers.join(',') + ')', 'string' ]
//, 'serve': [ 's', 'path to json file with array of responses to issue for given queries', 'string' ]
, 'type': [ 't', 'type (defaults to ANY for dns and PTR for mdns)', 'string' ]
, 'query': [ 'q', 'a superfluous explicit option to set the query as a command line flag' ]
, 'query': [ 'q', 'a superfluous explicit option to set the query as a command line flag', 'string' ]
, 'norecase': [ false, 'Disable dns0x20 security checking (mixed casing). See https://dyn.com/blog/use-of-bit-0x20-in-dns-labels/' ]
, 'recase': [ false, "Print the dns0x20 casing as-is rather than converting it back to lowercase. This is the default when explicitly using mixed case." ]
});
@ -30,14 +30,16 @@ cli.parse({
var common = require('../common.js');
cli.main(function (args, cli) {
cli.implicitType = cli.type;
cli.implicitQuery = cli.query;
args.forEach(function (arg) {
if (typeRe.test(arg) || -1 !== common.types.concat([ 'ANY' ]).indexOf(arg.toUpperCase())) {
if (cli.type) {
if (cli.implicitType) {
console.error("'type' was specified more than once");
process.exit(1);
return;
}
cli.type = cli.t = arg.toUpperCase();
cli.implicitType = cli.t = arg.toUpperCase();
return;
}
@ -81,15 +83,41 @@ cli.main(function (args, cli) {
return;
}
if (cli.query) {
console.error("'query' was specified more than once or unrecognized flag: " + cli.query + ", " + arg);
if ('string' === typeof cli.implicitQuery) {
console.error("'query' was specified more than once or unrecognized flag: " + cli.implicitQuery + ", " + arg);
process.exit(1);
return;
}
cli.query = cli.q = arg;
cli.implicitQuery = cli.q = arg;
});
// it can happen that a TLD is created with the name of a common type
if (!cli.type && cli.implicitType && !cli.implicitQuery) {
cli.implicitQuery = cli.implicitType;
cli.implicitType = null;
}
if ('string' === typeof cli.implicitQuery) {
cli.query = cli.implicitQuery;
}
if (cli.implicitType) {
cli.type = cli.implicitType;
}
if ('string' !== typeof cli.query) {
console.error('');
console.error('Usage:');
console.error('dig.js [@server] [TYPE] [domain]');
console.error('');
console.error('Example:');
console.error('dig.js daplie.com');
console.error('');
process.exit(1);
}
if (cli.query !== cli.query.toLowerCase()) {
cli.norecase = true;
}
if (cli.mdns) {
if (!cli.type) {
cli.type = cli.t = 'PTR';
@ -100,7 +128,7 @@ cli.main(function (args, cli) {
if (!cli.nameserver) {
cli.nameserver = '224.0.0.251';
}
if (!cli.query) {
if ('string' !== typeof cli.query) {
cli.query = '_services._dns-sd._udp.local';
}
if (!cli.timeout) {
@ -112,10 +140,6 @@ cli.main(function (args, cli) {
}
}
if (cli.query !== cli.query.toLowerCase()) {
cli.norecase = true;
}
if (!cli.norecase) {
cli.casedQuery = cli.query.split('').map(function (ch) {
// dns0x20 takes advantage of the fact that the binary operation for toUpperCase is
@ -138,16 +162,6 @@ cli.main(function (args, cli) {
if (!cli.class) {
cli.class = cli.c = 'IN';
}
if (!cli.query) {
console.error('');
console.error('Usage:');
console.error('dig.js [@server] [TYPE] [domain]');
console.error('');
console.error('Example:');
console.error('dig.js daplie.com');
console.error('');
process.exit(1);
}
var query = {
header: {