631bdcf304
Diff reduction against NetBSD external/bsd/blacklist (at commit 03c74c04f277). Sponsored by: The FreeBSD Foundation
157 lines
4.0 KiB
C
157 lines
4.0 KiB
C
/* $NetBSD: run.c,v 1.14 2016/04/04 15:52:56 christos Exp $ */
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/*-
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* Copyright (c) 2015 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: run.c,v 1.14 2016/04/04 15:52:56 christos Exp $");
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#include <stdio.h>
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#ifdef HAVE_LIBUTIL_H
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#include <libutil.h>
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#endif
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#ifdef HAVE_UTIL_H
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#include <util.h>
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#endif
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#include <stdarg.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <syslog.h>
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#include <string.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include "run.h"
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#include "conf.h"
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#include "internal.h"
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#include "support.h"
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extern char **environ;
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static char *
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run(const char *cmd, const char *name, ...)
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{
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const char *argv[20];
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size_t i;
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va_list ap;
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FILE *fp;
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char buf[10240], *res;
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argv[0] = "control";
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argv[1] = cmd;
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argv[2] = name;
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va_start(ap, name);
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for (i = 3; i < __arraycount(argv) &&
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(argv[i] = va_arg(ap, char *)) != NULL; i++)
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continue;
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va_end(ap);
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if (debug) {
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size_t z;
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int r;
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r = snprintf(buf, sizeof(buf), "run %s [", controlprog);
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if (r == -1 || (z = (size_t)r) >= sizeof(buf))
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z = sizeof(buf);
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for (i = 0; argv[i]; i++) {
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r = snprintf(buf + z, sizeof(buf) - z, "%s%s",
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argv[i], argv[i + 1] ? " " : "");
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if (r == -1 || (z += (size_t)r) >= sizeof(buf))
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z = sizeof(buf);
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}
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(*lfun)(LOG_DEBUG, "%s]", buf);
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}
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fp = popenve(controlprog, __UNCONST(argv), environ, "r");
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if (fp == NULL) {
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(*lfun)(LOG_ERR, "popen %s failed (%m)", controlprog);
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return NULL;
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}
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if (fgets(buf, sizeof(buf), fp) != NULL)
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res = strdup(buf);
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else
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res = NULL;
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pclose(fp);
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if (debug)
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(*lfun)(LOG_DEBUG, "%s returns %s", cmd, res);
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return res;
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}
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void
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run_flush(const struct conf *c)
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{
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free(run("flush", c->c_name, NULL));
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}
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int
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run_change(const char *how, const struct conf *c, char *id, size_t len)
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{
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const char *prname;
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char poname[64], adname[128], maskname[32], *rv;
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size_t off;
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switch (c->c_proto) {
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case -1:
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prname = "";
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break;
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case IPPROTO_TCP:
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prname = "tcp";
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break;
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case IPPROTO_UDP:
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prname = "udp";
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break;
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default:
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(*lfun)(LOG_ERR, "%s: bad protocol %d", __func__, c->c_proto);
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return -1;
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}
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if (c->c_port != -1)
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snprintf(poname, sizeof(poname), "%d", c->c_port);
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else
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poname[0] = '\0';
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snprintf(maskname, sizeof(maskname), "%d", c->c_lmask);
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sockaddr_snprintf(adname, sizeof(adname), "%a", (const void *)&c->c_ss);
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rv = run(how, c->c_name, prname, adname, maskname, poname, id, NULL);
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if (rv == NULL)
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return -1;
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if (len != 0) {
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rv[strcspn(rv, "\n")] = '\0';
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off = strncmp(rv, "OK ", 3) == 0 ? 3 : 0;
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strlcpy(id, rv + off, len);
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}
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free(rv);
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return 0;
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}
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