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#include "buffer.h"
#include "exit.h"
#include "strerr.h"
#include "uint16.h"
#include "byte.h"
#include "str.h"
#include "fmt.h"
#include "dns.h"
#define FATAL "dnsmx: fatal: "
void nomem(void)
{
strerr_die2x(111,FATAL,"out of memory");
}
static char seed[128];
static stralloc fqdn;
static char *q;
static stralloc out;
char strnum[FMT_ULONG];
int main(int argc,char **argv)
{
int i;
int j;
uint16 pref;
dns_random_init(seed);
if (*argv) ++argv;
while (*argv) {
if (!stralloc_copys(&fqdn,*argv)) nomem();
if (dns_mx(&out,&fqdn) == -1)
strerr_die4sys(111,FATAL,"unable to find MX records for ",*argv,": ");
if (!out.len) {
if (!dns_domain_fromdot(&q,*argv,str_len(*argv))) nomem();
if (!stralloc_copys(&out,"0 ")) nomem();
if (!dns_domain_todot_cat(&out,q)) nomem();
if (!stralloc_cats(&out,"\n")) nomem();
buffer_put(buffer_1,out.s,out.len);
}
else {
i = 0;
while (i + 2 < out.len) {
j = byte_chr(out.s + i + 2,out.len - i - 2,0);
uint16_unpack_big(out.s + i,&pref);
buffer_put(buffer_1,strnum,fmt_ulong(strnum,pref));
buffer_puts(buffer_1," ");
buffer_put(buffer_1,out.s + i + 2,j);
buffer_puts(buffer_1,"\n");
i += j + 3;
}
}
++argv;
}
buffer_flush(buffer_1);
_exit(0);
}
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