snmp library: works around a client bug for wr date

The snmpwalk client has a bug in returning 64-bit values. This redoes what we are already doing in wrsPpsi.c. It's bad, but mandatory at this point. Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

snmp library: works around a client bug for wr date
The snmpwalk client has a bug in returning 64-bit values. This redoes what we are already doing in wrsPpsi.c. It's bad, but mandatory at this point. Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
3193b72e · Alessandro Rubini · e463d15f · 3193b72e · 3193b72e
Commit 3193b72e authored Jul 29, 2014 by Alessandro Rubini
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Showing with 10 additions and 2 deletions

wrs-build.in doc/wrs-build.in +2 -2

wrsDate.c userspace/snmpd/wrsDate.c +8 -0

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--- a/doc/wrs-build.in
+++ b/doc/wrs-build.in
@@ -1707,8 +1707,8 @@ WR-SWITCH-MIB::wrsVersionGw2.0 = STRING: 5118070
 WR-SWITCH-MIB::wrsVersionGw3.0 = STRING: 7efeb16
 WR-SWITCH-MIB::wrsVersionHw1.0 = STRING: 3.30
 WR-SWITCH-MIB::wrsVersionHw2.0 = STRING: LX240T
-WR-SWITCH-MIB::wrsDateTAI.0 = Counter64: 6041400259542777856
-WR-SWITCH-MIB::wrsDateString.0 = STRING: 2014-07-29-08:38:31
+WR-SWITCH-MIB::wrsDateTAI.0 = Counter64: 1406623390
+WR-SWITCH-MIB::wrsDateString.0 = STRING: 2014-07-29-08:43:10
 @end smallexample

 @c ==========================================================================

--- a/userspace/snmpd/wrsDate.c
+++ b/userspace/snmpd/wrsDate.c
@@ -85,6 +85,14 @@ static int date_group(netsnmp_mib_handler          *handler,

 		wrs_d_get();

+		/*
+		 * WARNING: the current snmpd is bugged: it has
+		 * endianness problems with 64 bit, and the two
+		 * halves are swapped. So pre-swap them here
+		 */
+		wrs_d_current_64 =
+			(wrs_d_current_64 << 32) | (wrs_d_current_64 >> 32);
+
 		/* "- 2" because last is 0 for all scalars, I suppose */
 		obj = requests->requestvb->name[
 			requests->requestvb->name_length - 2