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/* Copyright (c) 2004 Sam Trenholme
*
* TERMS
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* This software is provided 'as is' with no guarantees of correctness or
* fitness for purpose.
*/
#include "../libs/JsStr.h"
#include <stdio.h>
/* Generate Csv2-compatible output for TXT record from raw js_string
* Quote ASCII sequences printed to standard output
* Make listeral ' \'
* Make \xXX (hex number) sequences of anything else
*/
int escape_stdout_csv2(js_string *js) {
unsigned char this;
int inquote = 0, counter = 0;
/* Sanity checks */
if(js_has_sanity(js) < 0)
return -1;
if(js->unit_size != 1)
return -1;
inquote = 0;
while(counter < js->unit_count) {
this = *(js->string + counter);
if(this < 32 || this > 122) { /* 122 == 'z'; {|}~ are escaped since
we currently don't allow the {
character in csv2 zone files (to
allow for future macro processing) */
if(inquote == 1) {
printf("\'");
inquote = 0;
}
printf("\\x%02x",this);
}
else if(this == '\'') {
if(inquote == 1) {
printf("\'\\\'\'");
}
else {
printf("\\\'");
}
}
else {
if(inquote == 0) {
inquote = 1;
printf("\'");
}
printf("%c",this);
}
counter++;
}
if(inquote == 1) {
printf("\'");
}
return 1;
}
/* Given a raw DNS query, show them the query in qtype:qname format, where
* qname is a human-readable dns query */
void human_readable_dns_query(js_string *query, int hide_qtype) {
unsigned char this;
int counter = 0, dlen = -1, qtype, x;
unsigned char *that;
/* Sanity checks */
if(js_has_sanity(query) < 0) {
printf(":ERROR:\n");
return;
}
if(query->unit_size != 1) {
printf(":ERROR:\n");
return;
}
if(query->unit_count < 2) {
printf(":ERROR:\n");
}
that = query->string;
qtype = *(that + query->unit_count - 1);
qtype += *(that + query->unit_count - 2) << 8;
if(hide_qtype != 1)
printf("%d:",qtype);
/* Print out the actual query */
for(x=0;x<10000;x++) {
if(counter > query->unit_count || counter < 0) {
printf(":ERROR:105:\n");
return;
}
dlen = *(query->string + counter);
if(dlen == '_') {
printf("{STAR}");
if(counter == 0 &&
query->unit_count != 3) {
/* ('*' at beginning of hostname) */
counter++;
continue;
} else { /* '*' at end of hostname */
break;
}
}
if(dlen > 64 || dlen < 0) {
printf(":ERROR:110:%d:\n",dlen);
return;
}
if(dlen == 0) {
break;
}
while(dlen > 0) {
counter++;
if(counter > query->unit_count || counter < 0) {
printf(":ERROR:119:\n");
return;
}
this = *(query->string + counter);
if(this < 32 || this > 127 || this == '.' ||
this ==':') {
printf("\\x%02x",this);
} else {
printf("%c",this);
}
dlen--;
}
counter++;
printf(".");
}
if(counter != query->unit_count - 3) {
printf(":ERROR:%d:%d:\n",counter,query->unit_count);
}
}
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