'\" t
.\"     Title: nutscan_scan_snmp
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: 03/02/2016
.\"    Manual: NUT Manual
.\"    Source: Network UPS Tools 2.7.3.1
.\"  Language: English
.\"
.TH "NUTSCAN_SCAN_SNMP" "3" "03/02/2016" "Network UPS Tools 2\&.7\&.3\&." "NUT Manual"
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.SH "NAME"
nutscan_scan_snmp \- Scan network for SNMP devices\&.
.SH "SYNOPSIS"
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#include <nut\-scan\&.h>
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.nf
nutscan_device_t * nutscan_scan_snmp(const char * start_ip,const char * stop_ip,long timeout, nutscan_snmp_t * sec);
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.SH "DESCRIPTION"
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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 may be either IPv4 or IPv6 addresses or host names\&.
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You MUST call \fBnutscan_init\fR(3) before using this function\&.
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This function waits up to \fItimeout\fR microseconds before considering an IP address does not respond to SNMP queries\&.
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A valid nutscan_snmp_t structure must be passed to this function\&.
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The nutscan_snmp_t structure contains the following members which must be filled as described below:
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.if n \{\
.RS 4
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char * \*(Aqcommunity\*(Aq;
char * \*(AqsecLevel\*(Aq;
char * \*(AqsecName\*(Aq;
char * \*(AqauthPassword\*(Aq;
char * \*(AqprivPassword\*(Aq;
char * \*(AqauthProtocol\*(Aq;
char * \*(AqprivProtocol\*(Aq;
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.if n \{\
.RE
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If \fIcommunity\fR is not NULL, SNMP v1 request are sent using this \fIcommunity\fR\&.
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If \fIcommunity\fR is NULL and \fIsecLevel\fR is NULL, SNMP v1 is selected and \fIcommunity\fR is set to "public"\&.
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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\&.
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If \fIsecLevel\fR is set to SNMP_SEC_LEVEL_AUTHNOPRIV, \fIauthPassword\fR must be non NULL\&.
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If \fIsecLevel\fR is set to SNMP_SEC_LEVEL_AUTHPRIV, \fIauthPassword\fR and \fIprivPassword\fR must be non NULL\&.
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If \fIauthProtocol\fR is NULL, MD5 protocol is used\&. Else you can set \fIauthProtocol\fR to either "MD5" or "SHA"\&.
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If \fIprivProtocol\fR is NULL, DES protocol is used\&. Else you can set \fIprivProtocol\fR to either "AES" or "DES"\&.
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\fIpeername\fR and \fIhandle\fR are used internally and do not need any initialization\&.
.SH "RETURN VALUE"
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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"
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\fBnutscan_init\fR(3), \fBnutscan_scan_usb\fR(3), \fBnutscan_scan_xml_http\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)