int
traceroute_set_hostname(struct traceroute *t, const char *hostname)
{
struct hostinfo *hi;
struct ip *outip;
struct sockaddr_in *to = (struct sockaddr_in *)&t->whereto;
hi = gethostinfo(hostname);
if (hi == NULL)
return -1;
setsin(to, hi->addrs[0]);
t->hostname = hi->name;
hi->name = NULL;
freehostinfo(hi);
outip = traceroute__init_outip(t);
if (outip == NULL)
return -2;
return 0;
}
static void
whois(const char *query, const char *hostname, int flags)
{
FILE *sfi, *sfo;
struct addrinfo *hostres, *res;
char *buf, *host, *nhost, *p;
int s = -1, f;
nfds_t i, j;
size_t c, len, count;
struct pollfd *fds;
int timeout = 180;
hostres = gethostinfo(hostname, 1);
for (res = hostres, count = 0; res; res = res->ai_next)
count++;
fds = calloc(count, sizeof(*fds));
if (fds == NULL)
err(EX_OSERR, "calloc()");
/*
* Traverse the result list elements and make non-block
* connection attempts.
*/
count = i = 0;
for (res = hostres; res != NULL; res = res->ai_next) {
s = socket(res->ai_family, res->ai_socktype | SOCK_NONBLOCK,
res->ai_protocol);
if (s < 0)
continue;
if (connect(s, res->ai_addr, res->ai_addrlen) < 0) {
if (errno == EINPROGRESS) {
/* Add the socket to poll list */
fds[i].fd = s;
fds[i].events = POLLERR | POLLHUP |
POLLIN | POLLOUT;
count++;
i++;
} else {
close(s);
s = -1;
/*
* Poll only if we have something to poll,
* otherwise just go ahead and try next
* address
*/
if (count == 0)
continue;
}
} else
goto done;
/*
* If we are at the last address, poll until a connection is
* established or we failed all connection attempts.
*/
if (res->ai_next == NULL)
timeout = INFTIM;
/*
* Poll the watched descriptors for successful connections:
* if we still have more untried resolved addresses, poll only
* once; otherwise, poll until all descriptors have errors,
* which will be considered as ETIMEDOUT later.
*/
do {
int n;
n = poll(fds, i, timeout);
if (n == 0) {
/*
* No event reported in time. Try with a
* smaller timeout (but cap at 2-3ms)
* after a new host have been added.
*/
if (timeout >= 3)
timeout <<= 1;
break;
} else if (n < 0) {
/*
* errno here can only be EINTR which we would want
* to clean up and bail out.
*/
s = -1;
goto done;
}
/*
* Check for the event(s) we have seen.
*/
for (j = 0; j < i; j++) {
if (fds[j].fd == -1 || fds[j].events == 0 ||
fds[j].revents == 0)
continue;
if (fds[j].revents & ~(POLLIN | POLLOUT)) {
close(s);
fds[j].fd = -1;
fds[j].events = 0;
count--;
continue;
} else if (fds[j].revents & (POLLIN | POLLOUT)) {
/* Connect succeeded. */
s = fds[j].fd;
goto done;
}
}
} while (timeout == INFTIM && count != 0);
}
/* All attempts were failed */
s = -1;
if (count == 0)
errno = ETIMEDOUT;
done:
/* Close all watched fds except the succeeded one */
for (j = 0; j < i; j++)
if (fds[j].fd != s && fds[j].fd != -1)
close(fds[j].fd);
if (s != -1) {
/* Restore default blocking behavior. */
if ((f = fcntl(s, F_GETFL)) != -1) {
f &= ~O_NONBLOCK;
if (fcntl(s, F_SETFL, f) == -1)
err(EX_OSERR, "fcntl()");
} else
err(EX_OSERR, "fcntl()");
}
free(fds);
freeaddrinfo(hostres);
if (s == -1)
err(EX_OSERR, "connect()");
sfi = fdopen(s, "r");
sfo = fdopen(s, "w");
if (sfi == NULL || sfo == NULL)
err(EX_OSERR, "fdopen()");
if (strcmp(hostname, GERMNICHOST) == 0) {
fprintf(sfo, "-T dn,ace -C US-ASCII %s\r\n", query);
} else if (strcmp(hostname, "dk" QNICHOST_TAIL) == 0) {
fprintf(sfo, "--show-handles %s\r\n", query);
} else {
fprintf(sfo, "%s\r\n", query);
}
fflush(sfo);
nhost = NULL;
while ((buf = fgetln(sfi, &len)) != NULL) {
while (len > 0 && isspace((unsigned char)buf[len - 1]))
buf[--len] = '\0';
printf("%.*s\n", (int)len, buf);
if ((flags & WHOIS_RECURSE) && nhost == NULL) {
host = strnstr(buf, WHOIS_SERVER_ID, len);
if (host != NULL) {
host += sizeof(WHOIS_SERVER_ID) - 1;
for (p = host; p < buf + len; p++) {
if (!ishost(*p)) {
*p = '\0';
break;
}
}
s_asprintf(&nhost, "%.*s",
(int)(buf + len - host), host);
} else if ((host =
strnstr(buf, WHOIS_ORG_SERVER_ID, len)) != NULL) {
host += sizeof(WHOIS_ORG_SERVER_ID) - 1;
for (p = host; p < buf + len; p++) {
if (!ishost(*p)) {
*p = '\0';
break;
}
}
s_asprintf(&nhost, "%.*s",
(int)(buf + len - host), host);
} else if (strcmp(hostname, ANICHOST) == 0) {
for (c = 0; c <= len; c++)
buf[c] = tolower((unsigned char)buf[c]);
for (i = 0; ip_whois[i] != NULL; i++) {
if (strnstr(buf, ip_whois[i], len) !=
NULL) {
s_asprintf(&nhost, "%s",
ip_whois[i]);
break;
}
}
}
}
}
if (nhost != NULL) {
whois(query, nhost, 0);
free(nhost);
}
}
static void
whois(const char *query, const char *hostname, int flags)
{
FILE *sfi, *sfo;
struct addrinfo *hostres, *res;
char *buf, *host, *nhost, *p;
int i, s;
size_t c, len;
hostres = gethostinfo(hostname, 1);
for (res = hostres; res; res = res->ai_next) {
s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (s < 0)
continue;
if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
break;
close(s);
}
freeaddrinfo(hostres);
if (res == NULL)
err(EX_OSERR, "connect()");
sfi = fdopen(s, "r");
sfo = fdopen(s, "w");
if (sfi == NULL || sfo == NULL)
err(EX_OSERR, "fdopen()");
if (strcmp(hostname, GERMNICHOST) == 0) {
#ifdef __APPLE__
/* radar:18958875 radar:21503897 */
fprintf(sfo, "-T dn -C UTF-8 %s\r\n", query);
#else
fprintf(sfo, "-T dn,ace -C US-ASCII %s\r\n", query);
#endif
} else {
fprintf(sfo, "%s\r\n", query);
}
fflush(sfo);
nhost = NULL;
while ((buf = fgetln(sfi, &len)) != NULL) {
while (len > 0 && isspace((unsigned char)buf[len - 1]))
buf[--len] = '\0';
printf("%.*s\n", (int)len, buf);
if ((flags & WHOIS_RECURSE) && nhost == NULL) {
host = strnstr(buf, WHOIS_SERVER_ID, len);
if (host != NULL) {
host += sizeof(WHOIS_SERVER_ID) - 1;
for (p = host; p < buf + len; p++) {
if (!ishost(*p)) {
*p = '\0';
break;
}
}
s_asprintf(&nhost, "%.*s",
(int)(buf + len - host), host);
} else if ((host =
strnstr(buf, WHOIS_ORG_SERVER_ID, len)) != NULL) {
host += sizeof(WHOIS_ORG_SERVER_ID) - 1;
for (p = host; p < buf + len; p++) {
if (!ishost(*p)) {
*p = '\0';
break;
}
}
s_asprintf(&nhost, "%.*s",
(int)(buf + len - host), host);
} else if (strcmp(hostname, ANICHOST) == 0) {
for (c = 0; c <= len; c++)
buf[c] = tolower((int)buf[c]);
for (i = 0; ip_whois[i] != NULL; i++) {
if (strnstr(buf, ip_whois[i], len) !=
NULL) {
s_asprintf(&nhost, "%s",
ip_whois[i]);
break;
}
}
}
}
}
if (nhost != NULL) {
whois(query, nhost, 0);
free(nhost);
}
}
static void
whois(const char *query, const char *hostname, int flags)
{
FILE *fp;
struct addrinfo *hostres, *res;
char *buf, *host, *nhost, *p;
int s = -1, f;
nfds_t i, j;
size_t len, count;
struct pollfd *fds;
int timeout = 180;
hostres = gethostinfo(hostname, 1);
for (res = hostres, count = 0; res; res = res->ai_next)
count++;
fds = calloc(count, sizeof(*fds));
if (fds == NULL)
err(EX_OSERR, "calloc()");
/*
* Traverse the result list elements and make non-block
* connection attempts.
*/
count = i = 0;
for (res = hostres; res != NULL; res = res->ai_next) {
s = socket(res->ai_family, res->ai_socktype | SOCK_NONBLOCK,
res->ai_protocol);
if (s < 0)
continue;
if (connect(s, res->ai_addr, res->ai_addrlen) < 0) {
if (errno == EINPROGRESS) {
/* Add the socket to poll list */
fds[i].fd = s;
fds[i].events = POLLERR | POLLHUP |
POLLIN | POLLOUT;
count++;
i++;
} else {
close(s);
s = -1;
/*
* Poll only if we have something to poll,
* otherwise just go ahead and try next
* address
*/
if (count == 0)
continue;
}
} else
goto done;
/*
* If we are at the last address, poll until a connection is
* established or we failed all connection attempts.
*/
if (res->ai_next == NULL)
timeout = INFTIM;
/*
* Poll the watched descriptors for successful connections:
* if we still have more untried resolved addresses, poll only
* once; otherwise, poll until all descriptors have errors,
* which will be considered as ETIMEDOUT later.
*/
do {
int n;
n = poll(fds, i, timeout);
if (n == 0) {
/*
* No event reported in time. Try with a
* smaller timeout (but cap at 2-3ms)
* after a new host have been added.
*/
if (timeout >= 3)
timeout <<= 1;
break;
} else if (n < 0) {
/*
* errno here can only be EINTR which we would
* want to clean up and bail out.
*/
s = -1;
goto done;
}
/*
* Check for the event(s) we have seen.
*/
for (j = 0; j < i; j++) {
if (fds[j].fd == -1 || fds[j].events == 0 ||
fds[j].revents == 0)
continue;
if (fds[j].revents & ~(POLLIN | POLLOUT)) {
close(s);
fds[j].fd = -1;
fds[j].events = 0;
count--;
continue;
} else if (fds[j].revents & (POLLIN | POLLOUT)) {
/* Connect succeeded. */
s = fds[j].fd;
goto done;
}
}
} while (timeout == INFTIM && count != 0);
}
/* All attempts were failed */
s = -1;
if (count == 0)
errno = ETIMEDOUT;
done:
if (s == -1)
err(EX_OSERR, "connect()");
/* Close all watched fds except the succeeded one */
for (j = 0; j < i; j++)
if (fds[j].fd != s && fds[j].fd != -1)
close(fds[j].fd);
free(fds);
/* Restore default blocking behavior. */
if ((f = fcntl(s, F_GETFL)) == -1)
err(EX_OSERR, "fcntl()");
f &= ~O_NONBLOCK;
if (fcntl(s, F_SETFL, f) == -1)
err(EX_OSERR, "fcntl()");
fp = fdopen(s, "r+");
if (fp == NULL)
err(EX_OSERR, "fdopen()");
if (!(flags & WHOIS_SPAM_ME) &&
(strcasecmp(hostname, DENICHOST) == 0 ||
strcasecmp(hostname, "de" QNICHOST_TAIL) == 0)) {
const char *q;
int idn = 0;
for (q = query; *q != '\0'; q++)
if (!isascii(*q))
idn = 1;
fprintf(fp, "-T dn%s %s\r\n", idn ? "" : ",ace", query);
} else if (!(flags & WHOIS_SPAM_ME) &&
(strcasecmp(hostname, DKNICHOST) == 0 ||
strcasecmp(hostname, "dk" QNICHOST_TAIL) == 0))
fprintf(fp, "--show-handles %s\r\n", query);
else if ((flags & WHOIS_SPAM_ME) ||
strchr(query, ' ') != NULL)
fprintf(fp, "%s\r\n", query);
else if (strcasecmp(hostname, ANICHOST) == 0) {
if (strncasecmp(query, "AS", 2) == 0 &&
strspn(query+2, "0123456789") == strlen(query+2))
fprintf(fp, "+ a %s\r\n", query+2);
else
fprintf(fp, "+ %s\r\n", query);
} else if (strcasecmp(hostres->ai_canonname, VNICHOST) == 0)
fprintf(fp, "domain %s\r\n", query);
else
fprintf(fp, "%s\r\n", query);
fflush(fp);
nhost = NULL;
while ((buf = fgetln(fp, &len)) != NULL) {
/* Nominet */
if (!(flags & WHOIS_SPAM_ME) &&
len == 5 && strncmp(buf, "-- \r\n", 5) == 0)
break;
printf("%.*s", (int)len, buf);
if ((flags & WHOIS_RECURSE) && nhost == NULL) {
for (i = 0; whois_referral[i].prefix != NULL; i++) {
p = buf;
SCAN(p, buf+len, *p == ' ');
if (strncasecmp(p, whois_referral[i].prefix,
whois_referral[i].len) != 0)
continue;
p += whois_referral[i].len;
SCAN(p, buf+len, *p == ' ');
host = p;
SCAN(p, buf+len, ishost(*p));
/* avoid loops */
if (strncmp(hostname, host, p - host) != 0)
s_asprintf(&nhost, "%.*s",
(int)(p - host), host);
break;
}
for (i = 0; actually_arin[i] != NULL; i++) {
if (strncmp(buf, actually_arin[i], len) == 0) {
s_asprintf(&nhost, "%s", ANICHOST);
break;
}
}
}
/* Verisign etc. */
if (!(flags & WHOIS_SPAM_ME) &&
len >= sizeof(CHOPSPAM)-1 &&
(strncasecmp(buf, CHOPSPAM, sizeof(CHOPSPAM)-1) == 0 ||
strncasecmp(buf, CHOPSPAM+4, sizeof(CHOPSPAM)-5) == 0)) {
printf("\n");
break;
}
}
fclose(fp);
freeaddrinfo(hostres);
if (nhost != NULL) {
whois(query, nhost, flags);
free(nhost);
}
}
