'\" t
.\"     Title: nutscan_scan_snmp
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 04/26/2022
.\"    Manual: NUT Manual
.\"    Source: Network UPS Tools 2.8.0
.\"  Language: English
.\"
.TH "NUTSCAN_SCAN_SNMP" "3" "04/26/2022" "Network UPS Tools 2\&.8\&.0" "NUT Manual"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
nutscan_scan_snmp \- Scan network for SNMP devices\&.
.SH "SYNOPSIS"
.sp
.nf
#include <nut\-scan\&.h>
#include <unistd\&.h> /* useconds_t */
.fi
.sp
.nf
nutscan_device_t * nutscan_scan_snmp(
       const char * start_ip,
       const char * stop_ip,
       useconds_t timeout,
       nutscan_snmp_t * sec);
.fi
.SH "DESCRIPTION"
.sp
The \fBnutscan_scan_snmp()\fR function try to detect NUT compatible SNMP devices\&. It tries SNMP queries on every IP ranging from \fIstart_ip\fR to \fIstop_ip\fR\&. Those IP arguments may be either IPv4 or IPv6 addresses or host names\&.
.sp
You MUST call \fBnutscan_init\fR(3) before using this function\&.
.sp
This function waits up to \fItimeout\fR microseconds before considering an IP address does not respond to SNMP queries\&.
.sp
A valid nutscan_snmp_t structure must be passed to this function\&.
.sp
The nutscan_snmp_t structure contains the following members which must be filled as described below:
.sp
.if n \{\
.RS 4
.\}
.nf
char * \*(Aqcommunity\*(Aq;
char * \*(AqsecLevel\*(Aq;
char * \*(AqsecName\*(Aq;
char * \*(AqauthPassword\*(Aq;
char * \*(AqprivPassword\*(Aq;
char * \*(AqauthProtocol\*(Aq;
char * \*(AqprivProtocol\*(Aq;
.fi
.if n \{\
.RE
.\}
.sp
If \fIcommunity\fR is not NULL, SNMP v1 request are sent using this \fIcommunity\fR\&.
.sp
If \fIcommunity\fR is NULL and \fIsecLevel\fR is NULL, SNMP v1 is selected and \fIcommunity\fR is set to "public"\&.
.sp
In the other cases, SNMP v3 is used\&. \fIsecLevel\fR may be one of SNMP_SEC_LEVEL_NOAUTH, SNMP_SEC_LEVEL_AUTHNOPRIV or SNMP_SEC_LEVEL_AUTHPRIV\&. \fIsecName\fR is the security name and must be non NULL\&.
.sp
If \fIsecLevel\fR is set to SNMP_SEC_LEVEL_AUTHNOPRIV, \fIauthPassword\fR must be non NULL\&.
.sp
If \fIsecLevel\fR is set to SNMP_SEC_LEVEL_AUTHPRIV, \fIauthPassword\fR and \fIprivPassword\fR must be non NULL\&.
.sp
If \fIauthProtocol\fR is NULL, MD5 protocol is used\&. Else you can set \fIauthProtocol\fR to either "MD5" or "SHA"\&.
.sp
If \fIprivProtocol\fR is NULL, DES protocol is used\&. Else you can set \fIprivProtocol\fR to either "AES" or "DES"\&.
.sp
\fIpeername\fR and \fIhandle\fR are used internally and do not need any initialization\&.
.SH "RETURN VALUE"
.sp
The \fBnutscan_scan_snmp()\fR function returns a pointer to a nutscan_device_t structure containing all found devices or NULL if an error occurs or no device is found\&.
.SH "SEE ALSO"
.sp
\fBnutscan_init\fR(3), \fBnutscan_scan_usb\fR(3), \fBnutscan_scan_xml_http_range\fR(3), \fBnutscan_scan_nut\fR(3), \fBnutscan_scan_avahi\fR(3), \fBnutscan_scan_ipmi\fR(3), \fBnutscan_display_ups_conf\fR(3), \fBnutscan_display_parsable\fR(3), \fBnutscan_new_device\fR(3), \fBnutscan_free_device\fR(3), \fBnutscan_add_option_to_device\fR(3), \fBnutscan_add_device_to_device\fR(3), \fBnutscan_scan_eaton_serial\fR(3), \fBnutscan_cidr_to_ip\fR(3)