https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236930
Bug ID: 236930
Summary: bsnmpd snmp_target wrong port
Product: Base System
Version: 11.2-STABLE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: b...@freebsd.org
Reporter: t.ermak...@securitycode.ru
Created attachment 203290
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=203290&action=edit
A fix-patch
We've been trying to use smnp traps via snmp_target module and have encountered
the situation, when big port number is not set correctly.
I've managed to track this down in trap.c. Here is a simple example in c++,
showing the problem.
vector<uint8_t> address = {0x07, 0x06, 0x05, 0x04, 0x1a, 0x85};
unsigned short from_code = htons(address[4]) << 8 | htons(address[5]) << 0;
unsigned short correct = htons(address[4] << 8 | address[5]);
cout << ntohs(from_code) << ' ' << ntohs(correct) << endl;
The output is:
133 6789
133 is 0x85, while 6789 is the expected result for {0x1a, 0x85}.
I'm also attaching the patch that we'll be using in our project, so a
reply/review would be great. Thanks in advance.
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