Improved nl-route-delete featuring an interactive deletion mode
This commit is contained in:
Thomas Graf
parent
66330d37f5
commit
2a09497fa4
2 changed files with 126 additions and 45 deletions
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@ -11,41 +11,94 @@
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#include "route-utils.h"
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static int interactive = 0, default_yes = 0, quiet = 0;
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static int deleted = 0;
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static struct nl_handle *nlh;
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static void print_version(void)
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{
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fprintf(stderr, "%s\n", LIBNL_STRING);
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exit(0);
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}
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static void print_usage(void)
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{
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printf(
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"Usage: nl-route-delete [OPTION]...\n"
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"Usage: nl-route-delete [OPTION]... [ROUTE]\n"
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"\n"
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"Options\n"
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" -f, --family=FAMILY address family\n"
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" -i, --interactive Run interactively\n"
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" --yes Set default answer to yes\n"
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" -q, --quiet Do not print informal notifications\n"
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" -h, --help Show this help\n"
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" -v, --version Show versioning information\n"
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"\n"
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"Route Options\n"
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" -d, --dst=ADDR destination prefix, e.g. 10.10.0.0/16\n"
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" -n, --nh=NEXTHOP nexthop configuration:\n"
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" -n, --nexthop=NH nexthop configuration:\n"
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" dev=DEV route via device\n"
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" weight=WEIGHT weight of nexthop\n"
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" flags=FLAGS\n"
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" via=GATEWAY route via other node\n"
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" realms=REALMS\n"
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" e.g. dev=eth0,via=192.168.1.12\n"
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" -s, --src=ADDR source prefix\n"
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" -i, --iif=DEV incomming interface\n"
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" -P, --pref-src=ADDR preferred source address\n"
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" -t, --table=TABLE routing table\n"
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" -m, --metric=OPTS metrics\n"
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" -p, --prio=NUM priotity\n"
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" -S, --scope=SCOPE scope\n"
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" -x, --proto=PROTO protocol\n"
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" -T, --type=TYPE routing type\n"
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" -D, --dumptype=TYPE { brief | detailed | stats | env }\n"
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" -h, --help show this help\n");
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exit(1);
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" -t, --table=TABLE Routing table\n"
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" --family=FAMILY Address family\n"
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" --src=ADDR Source prefix\n"
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" --iif=DEV Incomming interface\n"
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" --pref-src=ADDR Preferred source address\n"
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" --metrics=OPTS Metrics configurations\n"
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" --priority=NUM Priotity\n"
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" --scope=SCOPE Scope\n"
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" --protocol=PROTO Protocol\n"
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" --type=TYPE { unicast | local | broadcast | multicast }\n"
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);
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exit(0);
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}
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static void delete_cb(struct nl_object *obj, void *arg)
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{
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struct rtnl_route *route = (struct rtnl_route *) obj;
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struct nl_dump_params dp = {
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.dp_type = NL_DUMP_ONELINE,
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.dp_fd = stdout,
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};
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int err;
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if (interactive) {
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int answer;
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nl_object_dump(obj, &dp);
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printf("Delete? (%c/%c) ",
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default_yes ? 'Y' : 'y',
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default_yes ? 'n' : 'N');
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do {
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answer = tolower(getchar());
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if (answer == '\n')
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answer = default_yes ? 'y' : 'n';
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} while (answer != 'y' && answer != 'n');
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if (answer == 'n')
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return;
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}
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if ((err = rtnl_route_delete(nlh, route, 0)) < 0)
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fatal(err, "rtnl_route_del failed: %s\n", nl_geterror());
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if (!quiet) {
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printf("Deleted ");
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nl_object_dump(obj, &dp);
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}
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deleted++;
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}
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int main(int argc, char *argv[])
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{
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struct nl_handle *nlh;
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struct nl_cache *link_cache, *route_cache;
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struct rtnl_route *route;
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int err = 1;
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int err = 1, nf = 0;
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nlh = nltool_alloc_handle();
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nltool_connect(nlh, NETLINK_ROUTE);
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@ -58,47 +111,74 @@ int main(int argc, char *argv[])
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for (;;) {
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int c, optidx = 0;
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enum {
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ARG_FAMILY = 257,
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ARG_SRC = 258,
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ARG_IIF,
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ARG_PREF_SRC,
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ARG_METRICS,
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ARG_PRIORITY,
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ARG_SCOPE,
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ARG_PROTOCOL,
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ARG_TYPE,
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ARG_YES,
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};
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static struct option long_opts[] = {
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{ "family", 1, 0, 'f' },
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{ "dst", 1, 0, 'd' },
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{ "src", 1, 0, 's' },
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{ "iif", 1, 0, 'i' },
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{ "nh", 1, 0, 'n' },
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{ "pref-src", 1, 0, 'P' },
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{ "table", 1, 0, 't' },
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{ "metric", 1, 0, 'm' },
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{ "prio", 1, 0, 'p' },
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{ "scope", 1, 0, 'S' },
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{ "proto", 1, 0, 'x' },
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{ "type", 1, 0, 'T' },
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{ "interactive", 0, 0, 'i' },
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{ "yes", 0, 0, ARG_YES },
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{ "quiet", 0, 0, 'q' },
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{ "help", 0, 0, 'h' },
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{ "version", 0, 0, 'v' },
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{ "dst", 1, 0, 'd' },
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{ "nexthop", 1, 0, 'n' },
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{ "table", 1, 0, 't' },
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{ "family", 1, 0, ARG_FAMILY },
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{ "src", 1, 0, ARG_SRC },
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{ "iif", 1, 0, ARG_IIF },
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{ "pref-src", 1, 0, ARG_PREF_SRC },
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{ "metrics", 1, 0, ARG_METRICS },
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{ "priority", 1, 0, ARG_PRIORITY },
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{ "scope", 1, 0, ARG_SCOPE },
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{ "protocol", 1, 0, ARG_PROTOCOL },
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{ "type", 1, 0, ARG_TYPE },
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{ 0, 0, 0, 0 }
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};
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c = getopt_long(argc, argv, "f:d:s:i:n:P:t:m:p:S:x:T:h",
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long_opts, &optidx);
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c = getopt_long(argc, argv, "iqhvd:n:t:", long_opts, &optidx);
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if (c == -1)
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break;
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switch (c) {
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case 'f': parse_family(route, optarg); break;
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case 'd': parse_dst(route, optarg); break;
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case 's': parse_src(route, optarg); break;
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case 'i': parse_iif(route, optarg, link_cache); break;
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case 'n': parse_nexthop(route, optarg, link_cache); break;
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case 'P': parse_pref_src(route, optarg); break;
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case 't': parse_table(route, optarg); break;
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case 'm': parse_metric(route, optarg); break;
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case 'p': parse_prio(route, optarg); break;
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case 'S': parse_scope(route, optarg); break;
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case 'x': parse_protocol(route, optarg); break;
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case 'T': parse_type(route, optarg); break;
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case 'i': interactive = 1; break;
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case ARG_YES: default_yes = 1; break;
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case 'q': quiet = 1; break;
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case 'h': print_usage(); break;
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case 'v': print_version(); break;
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case 'd': nf++; parse_dst(route, optarg); break;
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case 'n': nf++; parse_nexthop(route, optarg, link_cache); break;
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case 't': nf++; parse_table(route, optarg); break;
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case ARG_FAMILY: nf++; parse_family(route, optarg); break;
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case ARG_SRC: nf++; parse_src(route, optarg); break;
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case ARG_IIF: nf++; parse_iif(route, optarg, link_cache); break;
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case ARG_PREF_SRC: nf++; parse_pref_src(route, optarg); break;
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case ARG_METRICS: nf++; parse_metric(route, optarg); break;
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case ARG_PRIORITY: nf++; parse_prio(route, optarg); break;
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case ARG_SCOPE: nf++; parse_scope(route, optarg); break;
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case ARG_PROTOCOL: nf++; parse_protocol(route, optarg); break;
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case ARG_TYPE: nf++; parse_type(route, optarg); break;
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}
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}
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if ((err = rtnl_route_delete(nlh, route, 0)) < 0)
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fatal(err, "rtnl_route_del failed: %s\n", nl_geterror());
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if (nf == 0 && !interactive && !default_yes) {
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fprintf(stderr, "You attempted to delete all routes in "
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"non-interactive mode, aborting.\n");
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exit(0);
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}
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nl_cache_foreach_filter(route_cache, OBJ_CAST(route), delete_cb, NULL);
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if (!quiet)
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printf("Deleted %d routes\n", deleted);
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err = 0;
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@ -18,6 +18,7 @@
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#include <inttypes.h>
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#include <errno.h>
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#include <stdint.h>
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#include <ctype.h>
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#include <getopt.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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