svn commit: r294575 - head/usr.bin/whois
Tony Finch
fanf at FreeBSD.org
Fri Jan 22 16:43:50 UTC 2016
Author: fanf
Date: Fri Jan 22 16:43:49 2016
New Revision: 294575
URL: https://svnweb.freebsd.org/changeset/base/294575
Log:
A few `whois` usability improvements
Look up AS numbers at ARIN.
Handle more referral formats.
Suppress spammy nameserver objects when querying the .com and .net
whois servers by explicitly querying for domain names by default.
Modified:
head/usr.bin/whois/whois.1
head/usr.bin/whois/whois.c
Modified: head/usr.bin/whois/whois.1
==============================================================================
--- head/usr.bin/whois/whois.1 Fri Jan 22 16:42:06 2016 (r294574)
+++ head/usr.bin/whois/whois.1 Fri Jan 22 16:43:49 2016 (r294575)
@@ -59,18 +59,10 @@ and
.Qq Li whois.nic. Ns Va TLD
and if neither host exists it falls back to its default server.
.Pp
-If an IP address is specified, the whois server will default to
+If an IP address or AS number is specified,
+the whois server will default to
the American Registry for Internet Numbers
.Pq Tn ARIN .
-If a query to
-.Tn ARIN
-references
-.Tn APNIC , AfriNIC , LACNIC ,
-or
-.Tn RIPE ,
-that server will be queried also, provided that the
-.Fl Q
-option is not specified.
.Pp
If
.Nm
@@ -164,18 +156,42 @@ Use the PeeringDB database of AS numbers
It contains details about presence at internet peering points
for many network operators.
.It Fl Q
-Do a quick lookup.
-This means that
+Do a quick lookup;
.Nm
-will not attempt to lookup the name in the authoritative whois
-server (if one is listed).
-This option has no effect when combined with any other options.
+will not attempt to follow referrals to other whois servers.
+This is the default if a server is explicitly specified
+using one of the other options.
+See also the
+.Fl R
+option.
.It Fl r
Use the R\(aaeseaux IP Europ\(aaeens
.Pq Tn RIPE
database.
It contains network numbers and domain contact information
for Europe.
+.It Fl R
+Do a recursive lookup;
+.Nm
+will attempt to follow referrals to other whois servers.
+This is the default if no server is explicitly specified.
+See also the
+.Fl Q
+option.
+.It Fl S
+By default, if the whois server is
+.Pa whois.verisign-grs.com
+(or a CNAME alias pointing at that name)
+then
+.Nm
+will query for
+.Dl domain Ar name
+The
+.Fl S
+option suppresses this behaviour,
+allowing you to make a loose-matching query,
+or query for host objects using the syntax
+.Dl nameserver Ar name
.El
.Pp
The operands specified to
Modified: head/usr.bin/whois/whois.c
==============================================================================
--- head/usr.bin/whois/whois.c Fri Jan 22 16:42:06 2016 (r294574)
+++ head/usr.bin/whois/whois.c Fri Jan 22 16:43:49 2016 (r294575)
@@ -63,7 +63,7 @@ __FBSDID("$FreeBSD$");
#define ANICHOST "whois.arin.net"
#define BNICHOST "whois.registro.br"
#define FNICHOST "whois.afrinic.net"
-#define GERMNICHOST "de.whois-servers.net"
+#define GERMNICHOST "de" QNICHOST_TAIL
#define GNICHOST "whois.nic.gov"
#define IANAHOST "whois.iana.org"
#define INICHOST "whois.networksolutions.com"
@@ -76,14 +76,13 @@ __FBSDID("$FreeBSD$");
#define QNICHOST_HEAD "whois.nic."
#define QNICHOST_TAIL ".whois-servers.net"
#define RNICHOST "whois.ripe.net"
+#define VNICHOST "whois.verisign-grs.com"
#define DEFAULT_PORT "whois"
-#define WHOIS_SERVER_ID "Whois Server: "
-#define WHOIS_ORG_SERVER_ID "Registrant Street1:Whois Server:"
-
#define WHOIS_RECURSE 0x01
#define WHOIS_QUICK 0x02
+#define WHOIS_SPAM_ME 0x04
#define ishost(h) (isalnum((unsigned char)h) || h == '.' || h == '-')
@@ -100,8 +99,20 @@ static struct {
{ NULL, NULL }
};
-static const char *ip_whois[] = { LNICHOST, RNICHOST, PNICHOST, BNICHOST,
- FNICHOST, NULL };
+#define WHOIS_REFERRAL(s) { s, sizeof(s) - 1 }
+static struct {
+ const char *prefix;
+ size_t len;
+} whois_referral[] = {
+ WHOIS_REFERRAL("Whois Server: "),
+ WHOIS_REFERRAL("WHOIS Server: "),
+ WHOIS_REFERRAL(" Whois Server: "),
+ WHOIS_REFERRAL("refer: "),
+ WHOIS_REFERRAL("Registrant Street1:Whois Server:"),
+ WHOIS_REFERRAL("ReferralServer: whois://"),
+ { NULL, 0 }
+};
+
static const char *port = DEFAULT_PORT;
static char *choose_server(char *);
@@ -123,7 +134,7 @@ main(int argc, char *argv[])
country = host = qnichost = NULL;
flags = use_qnichost = 0;
- while ((ch = getopt(argc, argv, "aAbc:fgh:iIklmp:PQr")) != -1) {
+ while ((ch = getopt(argc, argv, "aAbc:fgh:iIklmp:PQrRS")) != -1) {
switch (ch) {
case 'a':
host = ANICHOST;
@@ -173,6 +184,12 @@ main(int argc, char *argv[])
case 'r':
host = RNICHOST;
break;
+ case 'R':
+ flags |= WHOIS_RECURSE;
+ break;
+ case 'S':
+ flags |= WHOIS_SPAM_ME;
+ break;
case '?':
default:
usage();
@@ -235,6 +252,13 @@ choose_server(char *domain)
s_asprintf(&retval, "%s", ANICHOST);
return (retval);
}
+ if (strncasecmp(domain, "AS", 2) == 0) {
+ size_t len = strspn(domain + 2, "0123456789");
+ if (domain[len + 2] == '\0') {
+ s_asprintf(&retval, "%s", ANICHOST);
+ return (retval);
+ }
+ }
for (pos = strchr(domain, '\0'); pos > domain && pos[-1] == '.';)
*--pos = '\0';
if (*domain == '\0')
@@ -285,7 +309,7 @@ gethostinfo(char const *host, int exit_o
int error;
memset(&hints, 0, sizeof(hints));
- hints.ai_flags = 0;
+ hints.ai_flags = AI_CANONNAME;
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
res = NULL;
@@ -317,9 +341,9 @@ whois(const char *query, const char *hos
FILE *fp;
struct addrinfo *hostres, *res;
char *buf, *host, *nhost, *p;
- int s = -1, f;
+ int s = -1, f, antispam;
nfds_t i, j;
- size_t c, len, count;
+ size_t len, count;
struct pollfd *fds;
int timeout = 180;
@@ -327,6 +351,9 @@ whois(const char *query, const char *hos
for (res = hostres, count = 0; res; res = res->ai_next)
count++;
+ antispam = (flags & WHOIS_SPAM_ME) == 0 &&
+ strcmp(hostres->ai_canonname, VNICHOST) == 0;
+
fds = calloc(count, sizeof(*fds));
if (fds == NULL)
err(EX_OSERR, "calloc()");
@@ -457,6 +484,8 @@ done:
fprintf(fp, "-T dn,ace -C ISO-8859-1 %s\r\n", query);
} else if (strcmp(hostname, "dk" QNICHOST_TAIL) == 0) {
fprintf(fp, "--show-handles %s\r\n", query);
+ } else if (antispam) {
+ fprintf(fp, "domain %s\r\n", query);
} else {
fprintf(fp, "%s\r\n", query);
}
@@ -468,39 +497,18 @@ done:
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';
+ for (i = 0; whois_referral[i].prefix != NULL; i++) {
+ if (strncmp(buf,
+ whois_referral[i].prefix,
+ whois_referral[i].len) != 0)
+ continue;
+ host = buf + whois_referral[i].len;
+ for (p = host; p < buf + len; p++)
+ if (!ishost(*p))
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;
- }
- }
+ (int)(p - host), host);
+ break;
}
}
}
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