115 lines
2.6 KiB
Text
115 lines
2.6 KiB
Text
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NUT device discovery
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====================
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Introduction
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------------
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linkman:nut-scanner[8] is available to discover supported NUT devices
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(USB, SNMP, Eaton XML/HTTP and IPMI) and NUT servers (using Avahi or the
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classic connection method).
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This tool actually use a library, called *libnutscan*, to perform actual
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processing.
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Client access library
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~~~~~~~~~~~~~~~~~~~~~
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The nutscan library can be linked into other programs to give access
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to NUT discovery. Both static and shared versions are provided.
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linkman:nut-scanner[8] is provided as an example of how to use the nutscan
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functions.
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Here is a simple example that scans for USB devices, and use its own
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iteration function to display results:
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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/* Only enable USB scan */
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#define HAVE_USB_H
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#include "nut-scan.h"
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int main()
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{
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nutscan_options_t * opt;
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nutscan_device_t *device;
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if ((device = nutscan_scan_usb()) == NULL) {
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printf("No device found\n");
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exit(EXIT_FAILURE);
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}
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/* Rewind the list */
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while(device->prev != NULL) {
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device = device->prev;
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}
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/* Print results */
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do {
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printf("USB device found\n\tdriver: \"%s\"\n\tport: \"%s\"\n",
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device->driver, device->port);
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/* process options (serial number, bus, ...) */
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opt = &(device->opt);
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do {
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if( opt->option != NULL ) {
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printf("\t%s",opt->option);
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if( opt->value != NULL ) {
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printf(": \"%s\"", opt->value);
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}
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printf("\n");
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}
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opt = opt->next;
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} while( opt != NULL );
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device = device->next;
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}
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while( device != NULL );
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exit(EXIT_SUCCESS);
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}
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This library file and the associated header files are not installed by
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default. You must `./configure --with-lib` to enable building and
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installing these files. The libraries can then be built and installed
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with `make` and `make install` as usual. This must be done before
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building other (non-NUT) programs which depend on them.
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For more information, refer to the linkman:nutscan[3],
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manual page and the various
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link:man/index.html#devscan[nutscan_*(3)] functions documentation
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referenced in the same file.
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Configuration helpers
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~~~~~~~~~~~~~~~~~~~~~
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NUT provides helper scripts to ease the configuration step of your program, by
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detecting the right compilation and link flags.
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For more information, refer to a
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<<lib-info,Appendix B: NUT libraries complementary information>>.
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Python
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------
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Python support for NUT discovery features is not yet available.
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Perl
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----
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Perl support for NUT discovery features is not yet available.
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Java
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----
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Java support for NUT discovery features is not yet available.
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