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authorRoy Marples <roy@marples.name>2008-04-11 16:14:55 +0000
committerRoy Marples <roy@marples.name>2008-04-11 16:14:55 +0000
commit1a60d14fa2f91876b9ec14d6e6c88d97dacf6c4c (patch)
tree9e992f64d969ddef2e7d3836afa0d4065f69706a /duid.c
parent211da073490c5decd1deb46034385437a54ca977 (diff)
downloaddhcpcd-1a60d14fa2f91876b9ec14d6e6c88d97dacf6c4c.tar.xz
Normally I hate massive code drops, but heh.
The code has been drastically re-arranged. Instead of populating a custom structure while parsing dhcp messages, we now pluck what we need right out of the message itself. We have custom functions and a lookup table to make this really easy. This makes us more like dhclient and udhcpc, and will enable us to easily add (and remove!) more dhcp options without having to actually change the code (much). We now store the real dhcp message we got in /var/db/dhcpcd-$iface.lease, the mtime of the file being used as when we got the lease. This file is read in when re-using an old lease instead of parsing the .info file. The benefit of all of this means that we're actually ~15k smaller when compiled with the same features. This has been tested for quite some time, and I'm pretty sure most bugs with the 3.2 branch have been fixed whilst making this. Right now, we are 99% command line compatible with the 3.2 branch.
Diffstat (limited to 'duid.c')
-rw-r--r--duid.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/duid.c b/duid.c
deleted file mode 100644
index 4a7051b7..00000000
--- a/duid.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * dhcpcd - DHCP client daemon
- * Copyright 2006-2008 Roy Marples <roy@marples.name>
- * All rights reserved
-
- * 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 <arpa/inet.h>
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <time.h>
-
-#include "config.h"
-#include "common.h"
-#include "duid.h"
-
-#ifdef ENABLE_DUID
-
-#define THIRTY_YEARS_IN_SECONDS 946707779
-
-size_t
-get_duid(unsigned char *duid, const struct interface *iface)
-{
- FILE *f;
- uint16_t type = 0;
- uint16_t hw = 0;
- uint32_t ul;
- time_t t;
- int x = 0;
- unsigned char *p = duid;
- size_t len = 0;
- char *line = NULL;
-
- /* If we already have a DUID then use it as it's never supposed
- * to change once we have one even if the interfaces do */
- if ((f = fopen(DUIDFILE, "r"))) {
- get_line(&line, &len, f);
- if (line) {
- len = hwaddr_aton(NULL, line);
- if (len && len <= DUID_LEN)
- hwaddr_aton(duid, line);
- free(line);
- } else
- len = 0;
- fclose(f);
- if (len)
- return len;
- } else {
- if (errno != ENOENT)
- return 0;
- }
-
- /* No file? OK, lets make one based on our interface */
- if (!(f = fopen(DUIDFILE, "w")))
- return 0;
-
- type = htons(1); /* DUI-D-LLT */
- memcpy(p, &type, 2);
- p += 2;
-
- hw = htons(iface->family);
- memcpy(p, &hw, 2);
- p += 2;
-
- /* time returns seconds from jan 1 1970, but DUID-LLT is
- * seconds from jan 1 2000 modulo 2^32 */
- t = time(NULL) - THIRTY_YEARS_IN_SECONDS;
- ul = htonl(t & 0xffffffff);
- memcpy(p, &ul, 4);
- p += 4;
-
- /* Finally, add the MAC address of the interface */
- memcpy(p, iface->hwaddr, iface->hwlen);
- p += iface->hwlen;
-
- len = p - duid;
-
- x = fprintf(f, "%s\n", hwaddr_ntoa(duid, len));
- fclose(f);
-
- /* Failed to write the duid? scrub it, we cannot use it */
- if (x < 1) {
- len = 0;
- unlink(DUIDFILE);
- }
-
- return len;
-}
-#endif