#include <string.h>
#include <netinet/in.h>
#include <com32.h>
+#include <syslinux/pxe.h>
-static struct in_addr dnsresolve(const char *hostname)
+static inline uint32_t dns_resolve(const char *hostname)
{
- com32sys_t regs;
- struct in_addr addr;
-
- strcpy(__com32.cs_bounce, hostname);
-
- regs.eax.w[0] = 0x0010;
- regs.es = SEG(__com32.cs_bounce);
- regs.ebx.w[0] = OFFS(__com32.cs_bounce);
- __intcall(0x22, ®s, ®s);
+ return pxe_dns(hostname);
+}
- addr.s_addr = regs.eax.l;
- return addr;
+static inline void usage(const char *s)
+{
+ fprintf(stderr, "Usage: %s hostname [, hostname_1, hostname_2, ...]\n", s);
}
int main(int argc, char *argv[])
{
int i;
- struct in_addr addr;
+ uint32_t ip;
- for (i = 1; i < argc; i++) {
- addr = dnsresolve(argv[i]);
+ openconsole(&dev_null_r, &dev_stdcon_w);
- printf("%-39s %08X %d.%d.%d.%d\n",
- argv[i], ntohl(addr.s_addr),
- ((uint8_t *)&addr.s_addr)[0],
- ((uint8_t *)&addr.s_addr)[1],
- ((uint8_t *)&addr.s_addr)[2],
- ((uint8_t *)&addr.s_addr)[3]);
+ if (argc < 2) {
+ usage(argv[0]);
+ return 1;
+ }
+
+ for (i = 1; i < argc; i++) {
+ ip = dns_resolve(argv[i]);
+ if (!ip) {
+ printf("%s not found.\n", argv[i]);
+ } else {
+ printf("%-39s %08X %u.%u.%u.%u\n", argv[i], ntohl(ip), ip & 0xFF,
+ (ip >> 8) & 0xFF, (ip >> 16) & 0xFF, (ip >> 24) & 0xFF);
+ }
}
return 0;