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/*
 * src/nl-cls-add.c     Add classifier
 *
 *      This library is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License as
 *      published by the Free Software Foundation version 2 of the License.
 *
 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
 */

#include "cls/utils.h"

static int quiet = 0;

static void print_usage(void)
{
        printf(
"Usage: nl-cls-add [OPTION]... [CLASSIFIER] TYPE [TYPE OPTIONS]...\n"
"\n"
"Options\n"
" -q, --quiet               Do not print informal notifications.\n"
" -h, --help                Show this help.\n"
" -v, --version             Show versioning information.\n"
"\n"
"Classifier Options\n"
" -d, --dev=DEV             Device the classifier should be assigned to.\n"
" -p, --parent=HANDLE       Parent QDisc\n"
"     --proto=PROTO         Protocol (default=IPv4)\n"
"     --prio=NUM            Priority (0..256)\n"
"     --id=HANDLE           Unique identifier\n"
        );
        exit(0);
}

int main(int argc, char *argv[])
{
        struct nl_sock *sock;
        struct rtnl_cls *cls;
        struct nl_cache *link_cache;
        struct rtnl_cls_ops *ops;
        struct cls_module *mod;
        struct nl_dump_params dp = {
                .dp_type = NL_DUMP_DETAILS,
                .dp_fd = stdout,
        };
        char *kind;
        int err, nlflags = NLM_F_CREATE;
 
        sock = nlt_alloc_socket();
        nlt_connect(sock, NETLINK_ROUTE);
        link_cache = nlt_alloc_link_cache(sock);
        cls = nlt_alloc_cls();

        for (;;) {
                int c, optidx = 0;
                enum {
                        ARG_PROTO = 257,
                        ARG_PRIO = 258,
                        ARG_ID,
                };
                static struct option long_opts[] = {
                        { "quiet", 0, 0, 'q' },
                        { "help", 0, 0, 'h' },
                        { "version", 0, 0, 'v' },
                        { "dev", 1, 0, 'd' },
                        { "parent", 1, 0, 'p' },
                        { "proto", 1, 0, ARG_PROTO },
                        { "prio", 1, 0, ARG_PRIO },
                        { "id", 1, 0, ARG_ID },
                        { 0, 0, 0, 0 }
                };
        
                c = getopt_long(argc, argv, "+qhva:d:", long_opts, &optidx);
                if (c == -1)
                        break;

                switch (c) {
                case '?': exit(NLE_INVAL);
                case 'q': quiet = 1; break;
                case 'h': print_usage(); break;
                case 'v': nlt_print_version(); break;
                case 'd': parse_dev(cls, link_cache, optarg); break;
                case 'p': parse_parent(cls, optarg); break;
                case ARG_PRIO: parse_prio(cls, optarg); break;
                case ARG_ID: parse_handle(cls, optarg); break;
                case ARG_PROTO: parse_proto(cls, optarg); break;
                }
        }

        if (optind >= argc) {
                print_usage();
                fatal(EINVAL, "Missing classifier type");
        }

        kind = argv[optind++];
        if ((err = rtnl_cls_set_kind(cls, kind)) < 0)
                fatal(ENOENT, "Unknown classifier type \"%s\".", kind);
        
        ops = rtnl_cls_get_ops(cls);
        if (!(mod = lookup_cls_mod(ops)))
                fatal(ENOTSUP, "Classifier type \"%s\" not supported.", kind);

        mod->parse_argv(cls, argc, argv);

        printf("Adding ");
        nl_object_dump(OBJ_CAST(cls), &dp);

        if ((err = rtnl_cls_add(sock, cls, nlflags)) < 0)
                fatal(err, "Unable to add classifier: %s", nl_geterror(err));

        if (!quiet) {
                printf("Added ");
                nl_object_dump(OBJ_CAST(cls), &dp);
        }

        return 0;
}