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#include "str.h"
#include "byte.h"
#include "scan.h"
#include "exit.h"
#include "stralloc.h"
#include "buffer.h"
#include "strerr.h"
#include "uint16.h"
#include "response.h"
#include "case.h"
#include "printpacket.h"
#include "parsetype.h"
#include "ip4.h"
#include "ip6.h"
#include "dns.h"
extern int respond(char *,char *,char *);
#define FATAL "tinydns-get: fatal: "
void usage(void)
{
strerr_die1x(100,"tinydns-get: usage: tinydns-get [-s | -S] type name [ip]");
}
void oops(void)
{
strerr_die2sys(111,FATAL,"unable to parse: ");
}
static char ip[16];
static char type[2];
static char *q;
static stralloc out;
int main(int argc,char **argv)
{
uint16 u16;
if (!*argv) usage();
if (!*++argv) usage();
max_response_len = 512;
if ((*argv)[0] == '-') {
if ((*argv)[1] != 's' && (*argv)[1] != 'S' || (*argv)[2]) usage();
do_dnssec = 1;
max_response_len = (*argv)[1] == 's' ? 1220 : 4000;
if (!*++argv) usage();
}
if (!parsetype(*argv,type)) usage();
if (!*++argv) usage();
if (!dns_domain_fromdot(&q,*argv,str_len(*argv))) oops();
if (*++argv) {
if (!ip6_scan(*argv,ip)) usage();
}
if (!stralloc_copys(&out,"")) oops();
uint16_unpack_big(type,&u16);
if (!stralloc_catulong0(&out,u16,0)) oops();
if (!stralloc_cats(&out," ")) oops();
if (!dns_domain_todot_cat(&out,q)) oops();
if (!stralloc_cats(&out,":\n")) oops();
if (!response_query(q,type,DNS_C_IN)) oops();
response[3] &= ~128;
response[2] &= ~1;
response[2] |= 4;
case_lowerb(q,dns_domain_length(q));
if (byte_equal(type,2,DNS_T_AXFR)) {
response[3] &= ~15;
response[3] |= 4;
}
else
if (!respond(q,type,ip)) goto DONE;
if (!printpacket_cat(&out,response,response_len)) oops();
DONE:
buffer_putflush(buffer_1,out.s,out.len);
_exit(0);
}
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