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authorBret Lambert <blambert@cvs.openbsd.org>2014-04-30 07:01:35 +0000
committerBret Lambert <blambert@cvs.openbsd.org>2014-04-30 07:01:35 +0000
commit25c08aec7ec45eb6d6faa08183a16e8cc72e6095 (patch)
tree9faa01a1a448cb5f514e36834febcf981f29db25 /usr.sbin/snmpctl/snmpclient.c
parented96e4debf8db2e425a80e384226b848d6d3da62 (diff)
replace vis-ified output with human-readable strings
for a few OIDs, with a framework in place to add more as the mood strikes ok reyk@ sthen@
Diffstat (limited to 'usr.sbin/snmpctl/snmpclient.c')
-rw-r--r--usr.sbin/snmpctl/snmpclient.c118
1 files changed, 117 insertions, 1 deletions
diff --git a/usr.sbin/snmpctl/snmpclient.c b/usr.sbin/snmpctl/snmpclient.c
index 348ada264ba..c074859f39f 100644
--- a/usr.sbin/snmpctl/snmpclient.c
+++ b/usr.sbin/snmpctl/snmpclient.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: snmpclient.c,v 1.9 2014/04/16 08:52:28 blambert Exp $ */
+/* $OpenBSD: snmpclient.c,v 1.10 2014/04/30 07:01:34 blambert Exp $ */
/*
* Copyright (c) 2013 Reyk Floeter <reyk@openbsd.org>
@@ -40,6 +40,7 @@
#include <poll.h>
#include <err.h>
#include <pwd.h>
+#include <vis.h>
#include "snmpd.h"
#include "mib.h"
@@ -68,12 +69,29 @@ struct snmpc {
#define SNMPC_OID_ALL "1.0"
#define SNMPC_MAXREPETITIONS 10
+#define SNMPC_DATEANDTIME_LEN 11
+#define SNMPC_DATEANDTIME_SHORT_LEN 8
+
void snmpc_run(struct snmpc *, enum actions, const char *);
void snmpc_request(struct snmpc *, u_long);
int snmpc_response(struct snmpc *);
int snmpc_sendreq(struct snmpc *, u_long);
int snmpc_recvresp(int, int, u_int32_t, struct ber_element **);
+struct display_hint *
+ snmpc_display_hint_lookup(struct ber_oid *);
+void snmpc_display_hint(struct ber_oid *, char **);
+char *snmpc_physaddress(char *);
+char *snmpc_dateandtime(char *);
+
+struct display_hint {
+ struct ber_oid oid;
+ char *(*print)(char *);
+} display_hints[] = {
+ { { { MIB_ifPhysAddress } }, snmpc_physaddress },
+ { { { MIB_hrSystemDate } }, snmpc_dateandtime }
+};
+
void
snmpclient(struct parse_result *res)
{
@@ -81,9 +99,13 @@ snmpclient(struct parse_result *res)
struct addrinfo hints, *ai, *ai0;
int s;
int error;
+ u_int i;
struct passwd *pw;
struct parse_val *oid;
+ for (i = 0; i < sizeof(display_hints) / sizeof(display_hints[0]); i++)
+ smi_oidlen(&display_hints[i].oid);
+
bzero(&sc, sizeof(sc));
/* Get client configuration */
@@ -254,6 +276,7 @@ snmpc_response(struct snmpc *sc)
if ((value = smi_print_element(e)) != NULL) {
smi_oid2string(&sc->sc_oid, buf, sizeof(buf),
sc->sc_root_len);
+ snmpc_display_hint(&sc->sc_oid, &value);
p = buf;
if (*p != '\0')
printf("%s=%s\n", p, value);
@@ -276,6 +299,99 @@ snmpc_response(struct snmpc *sc)
return (-1);
}
+void
+snmpc_display_hint(struct ber_oid *oid, char **val)
+{
+ struct display_hint *h;
+ char *newval;
+
+ if (*val == NULL || strlen(*val) == 0)
+ return;
+
+ if ((h = snmpc_display_hint_lookup(oid)) == NULL)
+ return;
+ /* best-effort translation */
+ if ((newval = h->print(*val)) == NULL)
+ return;
+
+ free(*val);
+ *val = newval;
+}
+
+char *
+snmpc_physaddress(char *v)
+{
+ char buf[ETHER_ADDR_LEN + 2];
+ char *str;
+ ssize_t n;
+
+ n = strnunvis(buf, v, ETHER_ADDR_LEN + 2);
+ if (n == -1 || n != ETHER_ADDR_LEN + 2)
+ return (NULL);
+ if (asprintf(&str, "\"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\"",
+ buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]) == -1)
+ return (NULL);
+ return (str);
+}
+
+char *
+snmpc_dateandtime(char *v)
+{
+ char buf[SNMPC_DATEANDTIME_LEN + 2];
+ u_int16_t year;
+ char *str;
+ ssize_t n;
+
+ if ((n = strnunvis(buf, v, SNMPC_DATEANDTIME_LEN + 2)) == -1)
+ return (NULL);
+
+ bcopy(&buf[1], &year, sizeof(year));
+ year = ntohs(year);
+
+ switch (n) {
+ case SNMPC_DATEANDTIME_SHORT_LEN + 2:
+ if (asprintf(&str,
+ "\"%hu-%.02hhu-%.02hhu %.02hhu:%.02hhu:%.02hhu\"",
+ year, buf[3], buf[4], buf[5], buf[6], buf[7]) == -1)
+ return (NULL);
+ break;
+ case SNMPC_DATEANDTIME_LEN + 2:
+ if (asprintf(&str,
+ "\"%hu-%.02hhu-%.02hhu %.02hhu:%.02hhu:%.02hhu"
+ "%c%.02hhu%.02hhu\"",
+ year, buf[3], buf[4], buf[5], buf[6],
+ buf[7], buf[9], buf[10], buf[11]) == -1)
+ return (NULL);
+ break;
+ default:
+ return (NULL);
+ }
+
+ return (str);
+}
+
+struct display_hint *
+snmpc_display_hint_lookup(struct ber_oid *oid)
+{
+ u_int i, j, found;
+
+ for (i = 0; i < sizeof(display_hints) / sizeof(display_hints[0]); i++) {
+ if (oid->bo_n < display_hints[i].oid.bo_n)
+ continue;
+ found = 1;
+ for (j = 0; j < display_hints[i].oid.bo_n; j++) {
+ if (oid->bo_id[j] != display_hints[i].oid.bo_id[j]) {
+ found = 0;
+ break;
+ }
+ }
+
+ if (found)
+ return (&display_hints[i]);
+ }
+ return (NULL);
+}
+
int
snmpc_sendreq(struct snmpc *sc, u_long type)
{