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Copy pathCsv2_rr_soa.c
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Csv2_rr_soa.c
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/* Copyright (c) 2004-2011 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 "../libs/MaraHash.h"
#include "../MaraDns.h"
#include "Csv2_database.h"
#include "Csv2_read.h"
#include "Csv2_functions.h"
#include "../dns/functions_dns.h"
/* Yes, yes, yes. I concede that RFC2822 3.4 allows just about any
* character before the @ in an email address. I understand that I
* only allow a subset of that. This is MaraDNS. This is not some
* platonic ideal of perfection.
*
* Return true if this is our idea of what an OK character before an @
* in an email address is.
*/
int csv2_b4_at(int32 in) {
/* [0-9a-zA-Z\-\_\+\%\!\^\=] */
return (csv2_is_alphanum(in) || in == '+' || in == '%' ||
in == '!' || in == '^' || in == '=');
}
/* Process an address in the form '[email protected].' or 'a.foo.bar.baz.',
* or even (thanks to Yarin for the idea) 'a\.b\[email protected].' */
js_string *process_mbox(csv2_read *stream) {
js_string *o;
int32 look;
int x;
o = process_1stchar(stream,csv2_is_alphanum_ordot,"Z");
if(o == 0) {
return 0;
}
/* First, the stuff before the @ */
for(x = 0; x < 10000; x++) {
look = csv2_read_unicode(stream);
/* Special code to handle empty email addresses (just a '.')
* RFC1183 requires these to be supported */
if(x == 0 && o->unit_count >= 2 && *(o->string + 1) == '.') {
if(csv2_is_delimiter(look)) {
return o;
}
csv2_error(stream,
". can only be at start of label that is just a . by itself");
js_destroy(o);
return 0;
}
if(look == FATAL_CSV2_READ) {
js_destroy(o);
return 0;
}
if(look == '@' || look == '.') {
if(csv2_append_utf8(o, look) < 0) {
csv2_error(stream,"Error appending character");
js_destroy(o);
return 0;
}
if(look == '.') {
look = csv2_read_unicode(stream);
if(csv2_is_text(look)) {
if(csv2_append_utf8(o, look) < 0) {
csv2_error(stream,
"Error appending character");
js_destroy(o);
return 0;
}
} else {
csv2_error(stream,
"Strange character after dot");
js_destroy(o);
return 0;
}
}
break;
}
if(look == '\\') {
look = csv2_read_unicode(stream);
if(look != '.') {
csv2_error(stream,
"Illegal character after \\");
js_destroy(o);
return 0;
}
if(csv2_append_utf8(o, '.') < 0) {
csv2_error(stream,"Error appending dot");
js_destroy(o);
return 0;
}
look = csv2_read_unicode(stream);
}
if(csv2_b4_at(look)) {
if(csv2_append_utf8(o, look) < 0) {
csv2_error(stream,"Error appending character");
js_destroy(o);
return 0;
}
}
else {
csv2_error(stream,"Unexpected character before @"
" in mbox "
"Yes, I know RFC2822 3.4 probably allows "
"the character in question to be there. "
"This is MaraDNS, not some platonic ideal.");
js_destroy(o);
return 0;
}
}
/* OK, the stuff after the [@.] Now just use the stuff
* that process_dname uses */
return js_append_dname(o, stream, 0);
}
/* Get a SOA record from the stream (ignoring any leading whitespace)
* return a js_string object with the raw rddata for the SOA record */
js_string *csv2_get_soa(csv2_read *stream, js_string *zone,
csv2_add_state *state) {
js_string *name;
js_string *out;
int c;
if((out = js_create(512,1)) == 0) {
return 0;
}
/* Normal domain name label */
if(csv2_get_1st(stream,csv2_is_dchar,0) != JS_SUCCESS) {
return 0;
}
if((name = csv2_get_hostname(stream,zone,3)) == 0) {
js_destroy(out);
return 0;
}
if(js_append(name,out) == JS_ERROR) {
js_destroy(name);
js_destroy(out);
return 0;
}
js_destroy(name);
/* Mbox label */
name = csv2_get_mbox(stream,zone,1);
if(js_append(name,out) == JS_ERROR) {
js_destroy(name);
js_destroy(out);
return 0;
}
js_destroy(name);
/* The five remaining fields (serial, refresh, retry, expire, min) */
for(c = 0 ; c < 5 ; c++) {
int32 num;
num = csv2_get_num(stream);
/* Special case: They put in '/serial' for the serial
* number */
if(num == -2 && c == 0) {
if(js_adduint32(out,state->soa_serial) == JS_ERROR) {
js_destroy(out);
return 0;
}
} else if(num < 0) {
js_destroy(out);
return 0;
} else if(js_adduint32(out,num) == JS_ERROR) {
js_destroy(out);
return 0;
}
}
return out;
}