Hi,
problem:
"dumpx_send: Could not format log-string" appears in the log file while
debugging all tokens.
Cause:
An encrypted snmp packet which is rather large.
-----------------------------
Snmp_debug.c
-----------------------------
Void debugmsg_hex(const char *token, const u_char * thedata, size_t len)
{
u_char *buf = NULL;
size_t buf_len = 0, out_len = 0;
if (sprint_realloc_hexstring
(&buf, &buf_len, &out_len, 1, thedata, len)) {
if (buf != NULL) {
debugmsg(token, "%s", buf);
}
} else {
if (buf != NULL) {
debugmsg(token, "%s [TRUNCATED]", buf);
}
}
if (buf != NULL) {
free(buf);
}
}
-----------------------------
-----------------------------
sprint_realloc_hexstring is called with allow_realloc==1. Thus returning an
array about 2048 bytes long and out_len=1234. The else part won't be called,
since the array is reallocated to the needed size.
Caling debugmsg with an character string longer than LOGLENGTH==1024 will
result in the above error message. The error message is printed in "int
snmp_vlog(int priority, const char *format, va_list ap)" snmp_logging.c
Solution?:
Either do not allow sprint_realloc_hexstringto realloc the character buffer or
check after sprint_realloc_hexstring out_len and truncate the result yourself.
Should I create a patch for this?
Thanks,
David Ecker
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