auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 206 deletions

diff --git a/bpf.c b/bpf.c
deleted file mode 100644
index 96e53a1..0000000
--- a/bpf.c
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * dhcpcd - DHCP client daemon
- * Copyright 2006-2008 Roy Marples <roy@marples.name>
- *
- * 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 AUTHOR 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 AUTHOR 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/ioctl.h>
-#include <sys/socket.h>
-#include <sys/uio.h>
-
-#include <net/bpf.h>
-#include <net/if.h>
-#include <arpa/inet.h>
-
-#include <errno.h>
-#include <fcntl.h>
-#include <paths.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "config.h"
-#include "common.h"
-#include "dhcp.h"
-#include "logger.h"
-#include "net.h"
-#include "bpf-filter.h"
-
-int
-open_socket(struct interface *iface, int protocol)
-{
-	int fd = -1;
-	int *fdp = NULL;
-	struct ifreq ifr;
-	int buf_len = 0;
-	struct bpf_version pv;
-	struct bpf_program pf;
-#ifdef BIOCIMMEDIATE
-	int flags;
-#endif
-#ifdef _PATH_BPF
-	fd = open(_PATH_BPF, O_RDWR | O_NONBLOCK);
-#else
-	char *device;
-	int n = 0;
-
-	device = xmalloc(sizeof(char) * PATH_MAX);
-	do {
-		snprintf(device, PATH_MAX, "/dev/bpf%d", n++);
-		fd = open(device, O_RDWR | O_NONBLOCK);
-	} while (fd == -1 && errno == EBUSY);
-	free(device);
-#endif
-
-	if (fd == -1)
-		return -1;
-
-	if (ioctl(fd, BIOCVERSION, &pv) == -1)
-		goto eexit;
-	if (pv.bv_major != BPF_MAJOR_VERSION ||
-	    pv.bv_minor < BPF_MINOR_VERSION) {
-		logger(LOG_ERR, "BPF version mismatch - recompile " PACKAGE);
-		goto eexit;
-	}
-
-	memset(&ifr, 0, sizeof(ifr));
-	strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name));
-	if (ioctl(fd, BIOCSETIF, &ifr) == -1)
-		goto eexit;
-
-	/* Get the required BPF buffer length from the kernel. */
-	if (ioctl(fd, BIOCGBLEN, &buf_len) == -1)
-		goto eexit;
-	if (iface->buffer_size != (size_t)buf_len) {
-		free(iface->buffer);
-		iface->buffer_size = buf_len;
-		iface->buffer = xmalloc(buf_len);
-		iface->buffer_len = iface->buffer_pos = 0;
-	}
-
-#ifdef BIOCIMMEDIATE
-	flags = 1;
-	if (ioctl(fd, BIOCIMMEDIATE, &flags) == -1)
-		goto eexit;
-#endif
-
-	/* Install the DHCP filter */
-	if (protocol == ETHERTYPE_ARP) {
-		pf.bf_insns = UNCONST(arp_bpf_filter);
-		pf.bf_len = arp_bpf_filter_len;
-		fdp = &iface->arp_fd;
-	} else {
-		pf.bf_insns = UNCONST(dhcp_bpf_filter);
-		pf.bf_len = dhcp_bpf_filter_len;
-		fdp = &iface->raw_fd;
-	}
-	if (ioctl(fd, BIOCSETF, &pf) == -1)
-		goto eexit;
-	if (set_cloexec(fd) == -1)
-		goto eexit;
-	if (fdp) {
-		if (*fdp != -1)
-			close(*fdp);
-		*fdp = fd;
-	}
-	return fd;
-
-eexit:
-	free(iface->buffer);
-	iface->buffer = NULL;
-	close(fd);
-	return -1;
-}
-
-ssize_t
-send_raw_packet(const struct interface *iface, int protocol,
-		const void *data, ssize_t len)
-{
-	struct iovec iov[2];
-	struct ether_header hw;
-	int fd;
-
-	memset(&hw, 0, ETHER_HDR_LEN);
-	memset(&hw.ether_dhost, 0xff, ETHER_ADDR_LEN);
-	hw.ether_type = htons(protocol);
-	iov[0].iov_base = &hw;
-	iov[0].iov_len = ETHER_HDR_LEN;
-	iov[1].iov_base = UNCONST(data);
-	iov[1].iov_len = len;
-	if (protocol == ETHERTYPE_ARP)
-		fd = iface->arp_fd;
-	else
-		fd = iface->raw_fd;
-	return writev(fd, iov, 2);
-}
-
-/* BPF requires that we read the entire buffer.
- * So we pass the buffer in the API so we can loop on >1 packet. */
-ssize_t
-get_raw_packet(struct interface *iface, int protocol,
-	       void *data, ssize_t len)
-{
-	int fd = -1;
-	struct bpf_hdr packet;
-	ssize_t bytes;
-	const unsigned char *payload;
-
-	if (protocol == ETHERTYPE_ARP)
-		fd = iface->arp_fd;
-	else
-		fd = iface->raw_fd;
-
-	for (;;) {
-		if (iface->buffer_len == 0) {
-			bytes = read(fd, iface->buffer, iface->buffer_size);
-			if (bytes == -1)
-				return errno == EAGAIN ? 0 : -1;
-			else if ((size_t)bytes < sizeof(packet))
-				return -1;
-			iface->buffer_len = bytes;
-			iface->buffer_pos = 0;
-		}
-		bytes = -1;
-		memcpy(&packet, iface->buffer + iface->buffer_pos,
-		       sizeof(packet));
-		if (packet.bh_caplen != packet.bh_datalen)
-			goto next; /* Incomplete packet, drop. */
-		if (iface->buffer_pos + packet.bh_caplen + packet.bh_hdrlen >
-		    iface->buffer_len)
-			goto next; /* Packet beyond buffer, drop. */
-		payload = iface->buffer + packet.bh_hdrlen + ETHER_HDR_LEN;
-		bytes = packet.bh_caplen - ETHER_HDR_LEN;
-		if (bytes > len)
-			bytes = len;
-		memcpy(data, payload, bytes);
-next:
-		iface->buffer_pos += BPF_WORDALIGN(packet.bh_hdrlen +
-						   packet.bh_caplen);
-		if (iface->buffer_pos >= iface->buffer_len)
-			iface->buffer_len = iface->buffer_pos = 0;
-		if (bytes != -1)
-			return bytes;
-	}
-}