/*
* Stick a host on the beginning of a uucp
* address if it isn't there already.
*/
static char *
tackon(char *sys, char *rest)
{
while (*rest == '!')
rest++;
if (!ishost(sys, rest)) {
char *r = (char *)salloc(strlen(sys) + strlen(rest) + 2);
sprintf(r, "%s!%s", sys, rest);
rest = r;
}
return rest;
}
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 *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 *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);
}
}
char *
netmap(char name[], char from[])
{
char nbuf[BUFSIZ], ret[BUFSIZ];
register char *cp, *oname;
if (debug) fprintf(stderr, "netmap(name '%s', from '%s')\n", name, from);
if (strlen(from) == 0)
return(name); /* "from" is empty - can't do anything */
if (strcmp(from, name) == 0)
return(name); /* "from" and "name" are the same, do nothing */
/*
* If the name contains an "@" or a "%", remove it and the host
* following it if that host is "known".
*/
if (any('@', name) || any('%', name))
return(arpafix(name, from));
/*
* If the sender contains a "@" or a "%", make "name" into an
* address on that host, on the presumption that it should
* really have read "name@from" when we received the message
* rather than just "name".
*/
if (any('@', from) || any('%', from))
return(unuucp(makeremote(name, from)));
if (value("onehop") && (cp = strchr(name, '!')) && cp > name) {
/*
* "onehop" is set, meaning all machines are one UUCP
* hop away (fat chance, in this day and age), and "name"
* is a UUCP path rather than just a name. Leave it alone.
*/
nstrcpy(nbuf, sizeof (nbuf), name);
} else {
from = tackon(host, from);
*strrchr(from, '!') = 0;
name = tackon(lasthost(from), name);
while (((cp = lasthost(from)) != 0) && ishost(cp, name)) {
oname = name;
name = strchr(name, '!') + 1;
if (cp == from) {
from[strlen(from)] = '!';
if (value("mustbang") && !strchr(name, '!'))
name = oname;
return(unuucp(name));
}
*--cp = 0;
}
from[strlen(from)] = '!';
from = strchr(from, '!') + 1;
snprintf(nbuf, sizeof (nbuf), "%s!%s", from, name);
}
if (debug) fprintf(stderr, "before optim, nbuf '%s'\n", name);
#ifdef OPTIM
if ((cp = value("conv"))==NOSTR || strcmp(cp, "optimize") != 0)
nstrcpy(ret, sizeof (ret), nbuf);
else
optim(nbuf, ret);
#else
nstrcpy(ret, sizeof (ret), nbuf);
#endif /* OPTIM */
if (debug) fprintf(stderr, "after optim, nbuf '%s', ret '%s'\n", nbuf, ret);
cp = ret;
if (debug) fprintf(stderr, "wind up with '%s'\n", name);
if (!icequal(name, cp))
return(unuucp((char *) savestr(cp)));
return(unuucp(name));
}