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📄 Makefile.am(547 B)
📄 Makefile.in(54.24 KB)
📄 auditdistd.8(3.15 KB)
📄 auditdistd.c(20.87 KB)
📄 auditdistd.conf.5(9.35 KB)
📄 auditdistd.h(8.3 KB)
📄 faccessat.h(1.99 KB)
📄 fstatat.h(2.02 KB)
📄 openat.h(2.09 KB)
📄 parse.y(18.4 KB)
📄 pjdlog.c(13.02 KB)
📄 pjdlog.h(4.68 KB)
📄 proto.c(12.07 KB)
📄 proto.h(2.75 KB)
📄 proto_common.c(5.72 KB)
📄 proto_impl.h(3.13 KB)
📄 proto_socketpair.c(6.19 KB)
📄 proto_tcp.c(16.81 KB)
📄 proto_tls.c(25.82 KB)
📄 proto_uds.c(8.24 KB)
📄 receiver.c(19.36 KB)
📄 renameat.h(1.99 KB)
📄 sandbox.c(5.93 KB)
📄 sandbox.h(1.59 KB)
📄 sender.c(22.15 KB)
📄 sigtimedwait.h(2.79 KB)
📄 strndup.h(1.81 KB)
📄 subr.c(6.43 KB)
📄 subr.h(2.09 KB)
📄 synch.h(4.76 KB)
📄 token.l(2.62 KB)
📄 trail.c(16.92 KB)
📄 trail.h(2.51 KB)
📄 unlinkat.h(1.98 KB)

Editing: proto_socketpair.c

/*-
 * Copyright (c) 2009-2010 The FreeBSD Foundation
 * All rights reserved.
 *
 * This software was developed by Pawel Jakub Dawidek under sponsorship from
 * the FreeBSD Foundation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/socket.h>

#include <errno.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "pjdlog.h"
#include "proto_impl.h"

#define	SP_CTX_MAGIC	0x50c3741
struct sp_ctx {
	int			sp_magic;
	int			sp_fd[2];
	int			sp_side;
#define	SP_SIDE_UNDEF		0
#define	SP_SIDE_CLIENT		1
#define	SP_SIDE_SERVER		2
};

static void sp_close(void *ctx);

static int
sp_connect(const char *srcaddr, const char *dstaddr, int timeout, void **ctxp)
{
	struct sp_ctx *spctx;
	int error;

PJDLOG_ASSERT(dstaddr != NULL);
	PJDLOG_ASSERT(timeout >= -1);

if (strcmp(dstaddr, "socketpair://") != 0)
		return (-1);

PJDLOG_ASSERT(srcaddr == NULL);

spctx = malloc(sizeof(*spctx));
	if (spctx == NULL)
		return (errno);

if (socketpair(PF_UNIX, SOCK_STREAM, 0, spctx->sp_fd) == -1) {
		error = errno;
		free(spctx);
		return (error);
	}

spctx->sp_side = SP_SIDE_UNDEF;
	spctx->sp_magic = SP_CTX_MAGIC;
	*ctxp = spctx;

return (0);
}

static int
sp_wrap(int fd, bool client, void **ctxp)
{
	struct sp_ctx *spctx;

PJDLOG_ASSERT(fd >= 0);

spctx = malloc(sizeof(*spctx));
	if (spctx == NULL)
		return (errno);

if (client) {
		spctx->sp_side = SP_SIDE_CLIENT;
		spctx->sp_fd[0] = fd;
		spctx->sp_fd[1] = -1;
	} else {
		spctx->sp_side = SP_SIDE_SERVER;
		spctx->sp_fd[0] = -1;
		spctx->sp_fd[1] = fd;
	}
	spctx->sp_magic = SP_CTX_MAGIC;
	*ctxp = spctx;

return (0);
}

static int
sp_send(void *ctx, const unsigned char *data, size_t size, int fd)
{
	struct sp_ctx *spctx = ctx;
	int sock;

PJDLOG_ASSERT(spctx != NULL);
	PJDLOG_ASSERT(spctx->sp_magic == SP_CTX_MAGIC);

switch (spctx->sp_side) {
	case SP_SIDE_UNDEF:
		/*
		 * If the first operation done by the caller is proto_send(),
		 * we assume this is the client.
		 */
		/* FALLTHROUGH */
		spctx->sp_side = SP_SIDE_CLIENT;
		/* Close other end. */
		close(spctx->sp_fd[1]);
		spctx->sp_fd[1] = -1;
	case SP_SIDE_CLIENT:
		PJDLOG_ASSERT(spctx->sp_fd[0] >= 0);
		sock = spctx->sp_fd[0];
		break;
	case SP_SIDE_SERVER:
		PJDLOG_ASSERT(spctx->sp_fd[1] >= 0);
		sock = spctx->sp_fd[1];
		break;
	default:
		PJDLOG_ABORT("Invalid socket side (%d).", spctx->sp_side);
	}

/* Someone is just trying to decide about side. */
	if (data == NULL)
		return (0);

return (proto_common_send(sock, data, size, fd));
}

static int
sp_recv(void *ctx, unsigned char *data, size_t size, int *fdp)
{
	struct sp_ctx *spctx = ctx;
	int sock;

PJDLOG_ASSERT(spctx != NULL);
	PJDLOG_ASSERT(spctx->sp_magic == SP_CTX_MAGIC);

switch (spctx->sp_side) {
	case SP_SIDE_UNDEF:
		/*
		 * If the first operation done by the caller is proto_recv(),
		 * we assume this is the server.
		 */
		/* FALLTHROUGH */
		spctx->sp_side = SP_SIDE_SERVER;
		/* Close other end. */
		close(spctx->sp_fd[0]);
		spctx->sp_fd[0] = -1;
	case SP_SIDE_SERVER:
		PJDLOG_ASSERT(spctx->sp_fd[1] >= 0);
		sock = spctx->sp_fd[1];
		break;
	case SP_SIDE_CLIENT:
		PJDLOG_ASSERT(spctx->sp_fd[0] >= 0);
		sock = spctx->sp_fd[0];
		break;
	default:
		PJDLOG_ABORT("Invalid socket side (%d).", spctx->sp_side);
	}

/* Someone is just trying to decide about side. */
	if (data == NULL)
		return (0);

return (proto_common_recv(sock, data, size, fdp));
}

static int
sp_descriptor(const void *ctx)
{
	const struct sp_ctx *spctx = ctx;

PJDLOG_ASSERT(spctx != NULL);
	PJDLOG_ASSERT(spctx->sp_magic == SP_CTX_MAGIC);
	PJDLOG_ASSERT(spctx->sp_side == SP_SIDE_CLIENT ||
	    spctx->sp_side == SP_SIDE_SERVER);

switch (spctx->sp_side) {
	case SP_SIDE_CLIENT:
		PJDLOG_ASSERT(spctx->sp_fd[0] >= 0);
		return (spctx->sp_fd[0]);
	case SP_SIDE_SERVER:
		PJDLOG_ASSERT(spctx->sp_fd[1] >= 0);
		return (spctx->sp_fd[1]);
	}

PJDLOG_ABORT("Invalid socket side (%d).", spctx->sp_side);
}

static void
sp_close(void *ctx)
{
	struct sp_ctx *spctx = ctx;

PJDLOG_ASSERT(spctx != NULL);
	PJDLOG_ASSERT(spctx->sp_magic == SP_CTX_MAGIC);

switch (spctx->sp_side) {
	case SP_SIDE_UNDEF:
		PJDLOG_ASSERT(spctx->sp_fd[0] >= 0);
		close(spctx->sp_fd[0]);
		spctx->sp_fd[0] = -1;
		PJDLOG_ASSERT(spctx->sp_fd[1] >= 0);
		close(spctx->sp_fd[1]);
		spctx->sp_fd[1] = -1;
		break;
	case SP_SIDE_CLIENT:
		PJDLOG_ASSERT(spctx->sp_fd[0] >= 0);
		close(spctx->sp_fd[0]);
		spctx->sp_fd[0] = -1;
		PJDLOG_ASSERT(spctx->sp_fd[1] == -1);
		break;
	case SP_SIDE_SERVER:
		PJDLOG_ASSERT(spctx->sp_fd[1] >= 0);
		close(spctx->sp_fd[1]);
		spctx->sp_fd[1] = -1;
		PJDLOG_ASSERT(spctx->sp_fd[0] == -1);
		break;
	default:
		PJDLOG_ABORT("Invalid socket side (%d).", spctx->sp_side);
	}

spctx->sp_magic = 0;
	free(spctx);
}

static struct proto sp_proto = {
	.prt_name = "socketpair",
	.prt_connect = sp_connect,
	.prt_wrap = sp_wrap,
	.prt_send = sp_send,
	.prt_recv = sp_recv,
	.prt_descriptor = sp_descriptor,
	.prt_close = sp_close
};

static __constructor void
sp_ctor(void)
{

proto_register(&sp_proto, false);
}

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Editing: proto_socketpair.c

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