54 строки
1.6 KiB
C
54 строки
1.6 KiB
C
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/* -*- C -*-
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*
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* $HEADER$
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*
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include "opal/dss/dss.h"
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#include "opal/event/event.h"
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#include "opal/util/if.h"
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#include "opal/runtime/opal.h"
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int main(int argc, char* argv[])
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{
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int rc, idx;
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uint32_t addr, netmask, netaddr;
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struct sockaddr_in inaddr;
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if (0 > (rc = opal_init())) {
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fprintf(stderr, "orte_interface: couldn't init opal - error code %d\n", rc);
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return rc;
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}
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rc = opal_iftupletoaddr(argv[1], &netaddr, &netmask);
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fprintf(stderr, "netaddr %03d.%03d.%03d.%03d netmask %03d.%03d.%03d.%03d rc %d\n",
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OPAL_IF_FORMAT_ADDR(netaddr), OPAL_IF_FORMAT_ADDR(netmask), rc);
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/* search for a matching interface - take the first one within the returned scope */
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idx = opal_ifbegin();
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while (0 < idx) {
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/* ignore the loopback interface */
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if (opal_ifisloopback(idx)) {
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fprintf(stderr, "LOOPBACK IGNORED\n");
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idx = opal_ifnext(idx);
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continue;
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}
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if (0 != (rc = opal_ifindextoaddr(idx, (struct sockaddr*)&inaddr, sizeof(inaddr)))) {
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break;
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}
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addr = ntohl(inaddr.sin_addr.s_addr);
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fprintf(stderr, "checking netaddr %03d.%03d.%03d.%03d addr %03d.%03d.%03d.%03d netmask %03d.%03d.%03d.%03d rc %d\n",
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OPAL_IF_FORMAT_ADDR(netaddr), OPAL_IF_FORMAT_ADDR(addr), OPAL_IF_FORMAT_ADDR(netmask), rc);
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if (netaddr == (addr & netmask)) {
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fprintf(stderr, "MATCH FOUND\n");
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}
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idx = opal_ifnext(idx);
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}
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opal_finalize();
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return 0;
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}
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