int sendqueries() {
char buf[512];
struct sockaddr_in sadr;
int rlen, rc, qid;
int prand = getpid();
struct nsnode *tns = nshead;
in_addr_t ipno;
int sent = 0;
while(tns) {
if (tns->resprec == 0) {
qid = tns->queryno;
rlen = dnsencode(who, buf, qid, authq?0:1, qtype, 1);
bzero(&sadr, sizeof(sadr));
sadr.sin_family = AF_INET;
sadr.sin_port = htons(53);
ipno = inet_addr(tns->nsip);
if (ipno == INADDR_NONE) {
upchuck("Bad IP number", tns->nsip);
}
sadr.sin_addr.s_addr = ipno;
rc = sendto(dnsfd, buf, rlen, 0, (struct sockaddr *)&sadr, sizeof(sadr));
if (rc == -1) barf("sendto");
if (debug) fprintf(stderr, "send packet %d to %s\n", qid, tns->nsip);
sent++;
}
tns = tns->next;
}
return sent;
}
/*
* Make a temporary directory to play in and chdir() to it, returning
* pathname of previous working directory.
*/
const char *
make_playpen(char *pen, off_t sz)
{
char humbuf1[6], humbuf2[6];
char cwd[FILENAME_MAX];
if (!find_play_pen(pen, sz))
return NULL;
if (!mkdtemp(pen)) {
cleanup(0);
errx(2, "%s: can't mktemp '%s'", __func__, pen);
}
if (Verbose) {
if (sz) {
humanize_number(humbuf1, sizeof humbuf1, sz, "", HN_AUTOSCALE,
HN_NOSPACE);
humanize_number(humbuf2, sizeof humbuf2, min_free(pen),
"", HN_AUTOSCALE, HN_NOSPACE);
fprintf(stderr, "Requested space: %s bytes, free space: %s bytes in %s\n", humbuf1, humbuf2, pen);
}
}
if (min_free(pen) < sz) {
rmdir(pen);
cleanup(0);
errx(2, "%s: not enough free space to create '%s'.\n"
"Please set your PKG_TMPDIR environment variable to a location\n"
"with more space and\ntry the command again", __func__, pen);
}
if (!getcwd(cwd, FILENAME_MAX)) {
upchuck("getcwd");
return NULL;
}
if (chdir(pen) == FAIL) {
cleanup(0);
errx(2, "%s: can't chdir to '%s'", __func__, pen);
}
strcpy(PenLocation, pen);
return pushPen(cwd);
}
void newns(char *name, int crit) {
struct nsnode *tns;
char *scp, *p;
tns = (struct nsnode *)malloc(sizeof(struct nsnode));
if (!tns) puke("malloc failure");
scp = strdup(name);
p = index(scp, ':');
if (!p) upchuck("-n arg without a colon", scp);
*p++ = '\0';
tns->nsname = scp;
tns->nsip = p;
tns->next = nshead;
tns->queryno = prand++ & 0xffff;
tns->npos = nbit;
tns->critns = crit ? CRITBIT : WARNBIT;
tns->resprec = strcmp(scp, "_expect") ? 0 : 1;
nbit <<= 1;
nshead = tns;
}
