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/* Copyright (c) 2002-2004 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 "../MaraDns.h"
#include "../server/read_kvars.h"
/* This is added so we get no warnings when compiled with -Wall */
extern int make_ip_acl(js_string *in, ipv4pair *out, int max, int depth);
/* Stuff needed so that tcp stuff compiles w/o MaraDNS.c */
int log_level = 1;
ipv4pair *bind_addr_list = 0;
ipv4pair *synthip_addr_list = 0;
/* Some global variables so that the user can change the SOA origin (MINFO)
* and the format of the SOA serial number if needed */
js_string *synth_soa_origin = 0;
int synth_soa_serial = 1;
/* Some routines so we can see the above variables */
js_string *show_synth_soa_origin() {
return synth_soa_origin;
}
int show_synth_soa_serial() {
return synth_soa_serial;
}
/* Not in MaraDNS.c: Routines for setting synth_soa_origin and
* synth_soa_serial */
void set_soa_origin(js_string *in) {
synth_soa_origin = in;
}
void set_soa_serial(int in) {
synth_soa_serial = in;
}
/* Obtain a bind address from the kvars.
* This is used to determine the IPs the zoneserver will bind to
* Input: type: 1: the bind address
* 2: the address to synthesize for NS records
* Output: an ipv4pair containing the bind address. */
ipv4pair *libtcp_bind_address(int type) {
js_string *bind_address = 0, *ipv4_bind_address = 0,
*synthip = 0, *q = 0;
ipv4pair *out = 0;
int c;
bind_address = read_string_kvar("bind_address");
ipv4_bind_address = read_string_kvar("ipv4_bind_addresses");
if(type == 2)
synthip = read_string_kvar("csv2_synthip_list");
if((out = js_alloc(sizeof(ipv4pair),512)) == 0) {
js_destroy(bind_address);
js_destroy(ipv4_bind_address);
js_destroy(synthip);
return 0;
}
for(c = 0 ; c < 512 ; c++) {
out[c].ip = 0xffffffff;
}
q = bind_address;
if(js_length(ipv4_bind_address) > 0) {
q = ipv4_bind_address;
}
if(type == 2 && js_length(synthip) > 0) {
q = synthip;
}
if(make_ip_acl(q,out,500,0) == JS_ERROR) {
js_destroy(bind_address);
js_destroy(ipv4_bind_address);
js_destroy(synthip);
js_dealloc(out);
return 0;
}
js_destroy(bind_address);
js_destroy(ipv4_bind_address);
js_destroy(synthip);
return out;
}
/* Create a bind address list
* Input: None
* Output: JS_SUCCESS on success; JS_ERROR on error */
int libtcp_create_bind_addrs() {
bind_addr_list = libtcp_bind_address(1);
synthip_addr_list = libtcp_bind_address(2);
if(bind_addr_list == 0) {
return JS_ERROR;
}
if(synthip_addr_list == 0) {
return JS_ERROR;
}
return JS_SUCCESS;
}
/* Show them the bind address list
* Input: None
* Output: The bind address list
*/
/* TO DO: remove this from MaraDNS.c and have MaraDNS.c call this routine */
ipv4pair *get_bind_addr_list() {
return bind_addr_list;
}
ipv4pair *get_synthip_list() {
return synthip_addr_list;
}
/* Convert a domain-name query in to its lower-case equivalent
* Input: Pointer to the js string object with the query
* Output: JS_ERROR on error, JS_SUCCESS on sucess, 0 on
* success if no change was made to the string */
/* TO DO: remove this from MaraDNS.c and have MaraDNS.c call this routine */
int fold_case(js_string *js) {
int counter = 0;
int ret = 0;
if(js->max_count <= js->unit_count) {
return JS_ERROR;
}
if(js->unit_size != 1) {
return JS_ERROR;
}
if(js->unit_count < 2) {
return JS_ERROR;
}
while(counter + 2 < js->unit_count) {
/* Since A-Z never happen in a domain length label, we can
* speed things up a bit */
if(*(js->string + counter) >= 'A' &&
*(js->string + counter) <= 'Z') {
*(js->string + counter) += 32;
ret = 1;
}
counter++;
}
return ret;
}
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