RepoMirrors/openwrt
1
0
Fork 0
mirror of git://git.openwrt.org/openwrt/openwrt.git synced 2024-12-26 00:22:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

add trx and modified addpattern from rodent, update via tftp still works on gs v1.0, Makefile cleanup, renaming linksysstuff

Browse Source 
SVN-Revision: 231
This commit is contained in:
Waldemar Brodkorb 2005-02-12 02:36:55 +00:00
parent 20f8bc7c6e
commit 5945c33043
3 changed files with 635 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

221
openwrt/package/openwrt/addpattern.c Normal file
View File

@ -0,0 +1,221 @@
/*
* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* July 29, 2004
*
* This is a hacked replacement for the 'addpattern' utility used to
* create wrt54g .bin firmware files. It isn't pretty, but it does
* the job for me.
*
* Extensions:
* -v allows setting the version string on the command line.
* -{0|1} sets the (currently ignored) hw_ver flag in the header
* to 0 or 1 respectively.
*/
/* January 12, 2005
*
* Modified by rodent at rodent dot za dot net
* Support added for the new WRT54G v2.2 and WRT54GS v1.1 "flags"
* Without the flags set to 0x7, the above units will refuse to flash.
*
* Extensions:
* -{0|1|2} sets {0|1} sets hw_ver flag to 0/1. {2} sets hw_ver to 1
* and adds the new hardware "flags" for the v2.2/v1.1 units
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/stat.h>
/**********************************************************************/
#define CODE_ID "U2ND" /* from code_pattern.h */
#define CODE_PATTERN "W54S" /* from code_pattern.h */
#define CYBERTAN_VERSION "v3.37.2" /* from cyutils.h */
/* WRT54G v2.2 and WRT54GS v1.1 "flags" (from 3.37.32 firmware cyutils.h) */
#define SUPPORT_4712_CHIP 0x0001
#define SUPPORT_INTEL_FLASH 0x0002
#define SUPPORT_5325E_SWITCH 0x0004
struct code_header { /* from cyutils.h */
char magic[4];
char res1[4]; /* for extra magic */
char fwdate[3];
char fwvern[3];
char id[4]; /* U2ND */
char hw_ver; /* 0: for 4702, 1: for 4712 -- new in 2.04.3 */
unsigned short flags; /* SUPPORT_ flags new for 3.37.2 (WRT54G v2.2 and WRT54GS v1.1) */
unsigned char res2[10];
} ;
/**********************************************************************/
void usage(void) __attribute__ (( __noreturn__ ));
void usage(void)
{
fprintf(stderr, "Usage: addpattern [-i trxfile] [-o binfile] [-p pattern] [-g] [-v v#.#.#] [-{0|1|2}]\n");
exit(EXIT_FAILURE);
}
int main(int argc, char **argv)
{
char buf[1024]; /* keep this at 1k or adjust garbage calc below */
struct code_header *hdr;
FILE *in = stdin;
FILE *out = stdout;
char *ifn = NULL;
char *ofn = NULL;
char *pattern = CODE_PATTERN;
char *version = CYBERTAN_VERSION;
int gflag = 0;
int c;
int v0, v1, v2;
size_t off, n;
time_t t;
struct tm *ptm;
fprintf(stderr, "mjn3's addpattern replacement - v0.81\n");
hdr = (struct code_header *) buf;
memset(hdr, 0, sizeof(struct code_header));
while ((c = getopt(argc, argv, "i:o:p:gv:012")) != -1) {
switch (c) {
case 'i':
ifn = optarg;
break;
case 'o':
ofn = optarg;
break;
case 'p':
pattern = optarg;
break;
case 'g':
gflag = 1;
break;
case 'v': /* extension to allow setting version */
version = optarg;
break;
case '0':
hdr->hw_ver = 0;
break;
case '1':
hdr->hw_ver = 1;
break;
case '2': /* new 54G v2.2 and 54GS v1.1 flags */
hdr->hw_ver = 1;
hdr->flags |= SUPPORT_4712_CHIP;
hdr->flags |= SUPPORT_INTEL_FLASH;
hdr->flags |= SUPPORT_5325E_SWITCH;
break;
default:
usage();
}
}
if (optind != argc) {
fprintf(stderr, "illegal arg \"%s\"\n", argv[optind]);
usage();
}
if (strlen(pattern) != 4) {
fprintf(stderr, "illegal pattern \"%s\": length != 4\n", pattern);
usage();
}
if (ifn && !(in = fopen(ifn, "r"))) {
fprintf(stderr, "can not open \"%s\" for reading\n", ifn);
usage();
}
if (ofn && !(out = fopen(ofn, "w"))) {
fprintf(stderr, "can not open \"%s\" for writing\n", ofn);
usage();
}
if (time(&t) == (time_t)(-1)) {
fprintf(stderr, "time call failed\n");
return EXIT_FAILURE;
}
ptm = localtime(&t);
if (3 != sscanf(version, "v%d.%d.%d", &v0, &v1, &v2)) {
fprintf(stderr, "bad version string \"%s\"\n", version);
return EXIT_FAILURE;
}
memcpy(&hdr->magic, pattern, 4);
hdr->fwdate[0] = ptm->tm_year % 100;
hdr->fwdate[1] = ptm->tm_mon + 1;
hdr->fwdate[2] = ptm->tm_mday;
hdr->fwvern[0] = v0;
hdr->fwvern[1] = v1;
hdr->fwvern[2] = v2;
memcpy(&hdr->id, CODE_ID, strlen(CODE_ID));
off = sizeof(struct code_header);
fprintf(stderr, "writing firmware v%d.%d.%d on %d/%d/%d (y/m/d)\n",
v0, v1, v2,
hdr->fwdate[0], hdr->fwdate[1], hdr->fwdate[2]);
while ((n = fread(buf + off, 1, sizeof(buf)-off, in) + off) > 0) {
off = 0;
if (n < sizeof(buf)) {
if (ferror(in)) {
FREAD_ERROR:
fprintf(stderr, "fread error\n");
return EXIT_FAILURE;
}
if (gflag) {
gflag = sizeof(buf) - n;
memset(buf + n, 0xff, gflag);
fprintf(stderr, "adding %d bytes of garbage\n", gflag);
n = sizeof(buf);
}
}
if (!fwrite(buf, n, 1, out)) {
FWRITE_ERROR:
fprintf(stderr, "fwrite error\n");
return EXIT_FAILURE;
}
}
if (ferror(in)) {
goto FREAD_ERROR;
}
if (fflush(out)) {
goto FWRITE_ERROR;
}
fclose(in);
fclose(out);
return EXIT_SUCCESS;
}

134
openwrt/package/openwrt/openwrt.mk
View File

@ -1,58 +1,92 @@
#############################################################
#
# openwrt tools
# linksys and openwrt tools
#
#############################################################
OPENWRT_SITE=http://openwrt.openbsd-geek.de
LINKSYS_KERNEL_INCLUDE=$(BUILD_DIR)/linksys-kernel
# shared library
OPENWRT_SHARED_SOURCE=openwrt-shared.tar.gz
OPENWRT_SHARED_DIR=$(BUILD_DIR)/openwrt-shared
OPENWRT_SHARED_TARGET_BINARY:=usr/lib/libshared.so
# shared library stuff extracted from linksys firmware GPL sourcetree
# WRT54GS_3_37_2_1109_US
LINKSYS_SHARED_TGZ=linksys-shared.tar.gz
LINKSYS_SHARED_DIR=$(BUILD_DIR)/linksys-shared
LINKSYS_SHARED_TARGET_BINARY:=usr/lib/libshared.so
$(DL_DIR)/$(OPENWRT_SHARED_SOURCE):
$(WGET) -P $(DL_DIR) $(OPENWRT_SITE)/$(OPENWRT_SHARED_SOURCE)
$(DL_DIR)/$(LINKSYS_SHARED_TGZ):
$(WGET) -P $(DL_DIR) $(LINKSYS_TGZ_SITE)/$(LINKSYS_SHARED_TGZ)
$(OPENWRT_SHARED_DIR)/.source: $(DL_DIR)/$(OPENWRT_SHARED_SOURCE)
zcat $(DL_DIR)/$(OPENWRT_SHARED_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
touch $(OPENWRT_SHARED_DIR)/.source
$(LINKSYS_SHARED_DIR)/.source: $(DL_DIR)/$(LINKSYS_SHARED_TGZ)
zcat $(DL_DIR)/$(LINKSYS_SHARED_TGZ) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
touch $(LINKSYS_SHARED_DIR)/.source
$(TARGET_DIR)/$(OPENWRT_SHARED_TARGET_BINARY): $(OPENWRT_SHARED_DIR)/.source
$(MAKE) -C $(OPENWRT_SHARED_DIR) -f Makefile-openwrt \
$(TARGET_DIR)/$(LINKSYS_SHARED_TARGET_BINARY): $(LINKSYS_SHARED_DIR)/.source
$(SED) 's/#include.*/#include <cy_conf.h>/g;' $(LINKSYS_SHARED_DIR)/utils.h
$(MAKE) -C $(LINKSYS_SHARED_DIR) -f Makefile-openwrt \
INSTALLDIR=$(TARGET_DIR) \
CC=$(TARGET_CC) LD=$(TARGET_CROSS)ld STRIP="$(STRIP)" \
CFLAGS="$(TARGET_CFLAGS) -I. -I../binary/include -Wall -I$(OPENWRT_SRCBASE)/" \
CFLAGS="$(TARGET_CFLAGS) -I$(LINKSYS_KERNEL_INCLUDE)/include \
-I$(LINKSYS_KERNEL_INCLUDE) -Wall -I." \
install
openwrt-shared: $(TARGET_DIR)/$(OPENWRT_SHARED_TARGET_BINARY)
linksys-shared: $(TARGET_DIR)/$(LINKSYS_SHARED_TARGET_BINARY)
openwrt-shared-clean:
-$(MAKE) -C $(OPENWRT_SHARED_DIR) clean
linksys-shared-clean:
-$(MAKE) -C $(LINKSYS_SHARED_DIR) clean
# nvram tool
OPENWRT_NVRAM_SOURCE=openwrt-nvram.tar.gz
OPENWRT_NVRAM_DIR=$(BUILD_DIR)/openwrt-nvram
OPENWRT_NVRAM_TARGET_BINARY:=usr/sbin/nvram
# nvram tool extracted from linksys firmware GPL sourcetree
# WRT54GS_3_37_2_1109_US
LINKSYS_NVRAM_TGZ=linksys-nvram.tar.gz
LINKSYS_NVRAM_DIR=$(BUILD_DIR)/linksys-nvram
LINKSYS_NVRAM_TARGET_BINARY:=usr/sbin/nvram
$(DL_DIR)/$(OPENWRT_NVRAM_SOURCE):
$(WGET) -P $(DL_DIR) $(OPENWRT_SITE)/$(OPENWRT_NVRAM_SOURCE)
$(DL_DIR)/$(LINKSYS_NVRAM_TGZ):
$(WGET) -P $(DL_DIR) $(LINKSYS_TGZ_SITE)/$(LINKSYS_NVRAM_TGZ)
$(OPENWRT_NVRAM_DIR)/.source: $(DL_DIR)/$(OPENWRT_NVRAM_SOURCE)
zcat $(DL_DIR)/$(OPENWRT_NVRAM_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
touch $(OPENWRT_NVRAM_DIR)/.source
$(LINKSYS_NVRAM_DIR)/.source: $(DL_DIR)/$(LINKSYS_NVRAM_TGZ)
zcat $(DL_DIR)/$(LINKSYS_NVRAM_TGZ) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
touch $(LINKSYS_NVRAM_DIR)/.source
$(TARGET_DIR)/$(OPENWRT_NVRAM_TARGET_BINARY): $(OPENWRT_NVRAM_DIR)/.source
$(MAKE) -C $(OPENWRT_NVRAM_DIR) INSTALLDIR=$(TARGET_DIR) \
$(TARGET_DIR)/$(LINKSYS_NVRAM_TARGET_BINARY): $(LINKSYS_NVRAM_DIR)/.source
$(MAKE) -C $(LINKSYS_NVRAM_DIR) INSTALLDIR=$(TARGET_DIR) \
CC=$(TARGET_CC) LD=$(TARGET_CROSS)ld STRIP="$(STRIP)" \
CFLAGS="$(TARGET_CFLAGS) -I. -I../binary/include -Wall -DOPENWRT_NVRAM" \
CFLAGS="$(TARGET_CFLAGS) -I. -I$(LINKSYS_KERNEL_INCLUDE)/include \
-I$(LINKSYS_KERNEL_INCLUDE) -I$(LINKSYS_SHARED_DIR) -Wall" install
linksys-nvram: $(TARGET_DIR)/$(LINKSYS_NVRAM_TARGET_BINARY)
linksys-nvram-clean:
-$(MAKE) -C $(LINKSYS_NVRAM_BUILD_DIR) clean
# wlconf tool extracted from linksys firmware GPL sourcetree
# WRT54GS_3_37_2_1109_US
LINKSYS_WLCONF_TGZ=linksys-wlconf.tar.gz
LINKSYS_WLCONF_DIR=$(BUILD_DIR)/linksys-wlconf
LINKSYS_WLCONF_TARGET_BINARY:=usr/sbin/wlconf
$(DL_DIR)/$(LINKSYS_WLCONF_TGZ):
$(WGET) -P $(DL_DIR) $(LINKSYS_TGZ_SITE)/$(LINKSYS_WLCONF_TGZ)
$(LINKSYS_WLCONF_DIR)/.source: $(DL_DIR)/$(LINKSYS_WLCONF_TGZ)
zcat $(DL_DIR)/$(LINKSYS_WLCONF_TGZ) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
touch $(LINKSYS_WLCONF_DIR)/.source
$(TARGET_DIR)/$(LINKSYS_WLCONF_TARGET_BINARY): $(LINKSYS_WLCONF_DIR)/.source
$(MAKE) -C $(LINKSYS_WLCONF_DIR) INSTALLDIR=$(TARGET_DIR) \
CC=$(TARGET_CC) LD=$(TARGET_CROSS)ld STRIP="$(STRIP)" \
CFLAGS="$(TARGET_CFLAGS) -I. -I$(LINKSYS_KERNEL_INCLUDE)/include \
-I$(LINKSYS_KERNEL_INCLUDE) \
-I$(LINKSYS_SHARED_DIR) \
-I$(LINKSYS_NVRAM_DIR) \
-Wall -DOPENWRT_WLCONF" \
LDFLAGS="-lnvram -lshared -L$(BUILD_DIR)/linksys-shared -L$(BUILD_DIR)/linksys-nvram" \
install
openwrt-nvram: $(TARGET_DIR)/$(OPENWRT_NVRAM_TARGET_BINARY)
linksys-wlconf: $(TARGET_DIR)/$(LINKSYS_WLCONF_TARGET_BINARY)
linksys-wlconf-clean:
-$(MAKE) -C $(LINKSYS_WLCONF_BUILD_DIR) clean
openwrt-nvram-clean:
-$(MAKE) -C $(OPENWRT_NVRAM_BUILD_DIR) clean
# mtd tool
OPENWRT_MTD_SOURCE=package/openwrt/mtd.c
@ -63,32 +97,24 @@ $(TARGET_DIR)/$(OPENWRT_MTD_TARGET_BINARY):
openwrt-mtd: $(TARGET_DIR)/$(OPENWRT_MTD_TARGET_BINARY)
# wlconf tool
OPENWRT_WLCONF_SOURCE=openwrt-wlconf.tar.gz
OPENWRT_WLCONF_DIR=$(BUILD_DIR)/openwrt-wlconf
OPENWRT_WLCONF_TARGET_BINARY:=usr/sbin/wlconf
# trx tool
OPENWRT_TRX_SOURCE=package/openwrt/trx.c
OPENWRT_TRX_TARGET=$(BUILD_DIR)/trx
$(DL_DIR)/$(OPENWRT_WLCONF_SOURCE):
$(WGET) -P $(DL_DIR) $(OPENWRT_SITE)/$(OPENWRT_WLCONF_SOURCE)
$(OPENWRT_TRX_TARGET):
$(CC) -o $(OPENWRT_TRX_TARGET) $(OPENWRT_TRX_SOURCE)
$(OPENWRT_WLCONF_DIR)/.source: $(DL_DIR)/$(OPENWRT_WLCONF_SOURCE)
zcat $(DL_DIR)/$(OPENWRT_WLCONF_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
touch $(OPENWRT_WLCONF_DIR)/.source
openwrt-trx: $(OPENWRT_TRX_TARGET)
$(TARGET_DIR)/$(OPENWRT_WLCONF_TARGET_BINARY): $(OPENWRT_WLCONF_DIR)/.source
$(MAKE) -C $(OPENWRT_WLCONF_DIR) INSTALLDIR=$(TARGET_DIR) \
CC=$(TARGET_CC) LD=$(TARGET_CROSS)ld STRIP="$(STRIP)" \
CFLAGS="$(TARGET_CFLAGS) -I. -I../binary/include -I$(BUILD_DIR)/openwrt-shared \
-I$(BUILD_DIR)/openwrt-nvram -Wall -DOPENWRT_WLCONF" \
LDFLAGS="-lnvram -lshared -L$(BUILD_DIR)/openwrt-shared -L$(BUILD_DIR)/openwrt-nvram" \
install
# addpattern tool
OPENWRT_ADDPATTERN_SOURCE=package/openwrt/addpattern.c
OPENWRT_ADDPATTERN_TARGET=$(BUILD_DIR)/addpattern
openwrt-wlconf: $(TARGET_DIR)/$(OPENWRT_WLCONF_TARGET_BINARY)
$(OPENWRT_ADDPATTERN_TARGET):
$(CC) -o $(OPENWRT_ADDPATTERN_TARGET) $(OPENWRT_ADDPATTERN_SOURCE)
openwrt-wlconf-clean:
-$(MAKE) -C $(OPENWRT_WLCONF_BUILD_DIR) clean
openwrt: openwrt-shared openwrt-nvram openwrt-mtd openwrt-wlconf
openwrt-addpattern: $(OPENWRT_ADDPATTERN_TARGET)
openwrt: linksys-shared linksys-nvram linksys-wlconf openwrt-mtd openwrt-trx openwrt-addpattern

334
openwrt/package/openwrt/trx.c Normal file
View File

@ -0,0 +1,334 @@
/*
* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* July 29, 2004
*
* This is a hacked replacement for the 'trx' utility used to create
* wrt54g .trx firmware files. It isn't pretty, but it does the job
* for me.
*
* As an extension, you can specify a larger maximum length for the
* .trx file using '-m'. It will be rounded up to be a multiple of 4K.
* NOTE: This space will be malloc()'d.
*
* August 16, 2004
*
* Sigh... Make it endian-neutral.
*
* TODO: Support '-b' option to specify offsets for each file.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <endian.h>
#include <byteswap.h>
#if __BYTE_ORDER == __BIG_ENDIAN
#define STORE32_LE(X) bswap_32(X)
#elif __BYTE_ORDER == __LITTLE_ENDIAN
#define STORE32_LE(X) (X)
#else
#error unkown endianness!
#endif
uint32_t crc32buf(char *buf, size_t len);
/**********************************************************************/
/* from trxhdr.h */
#define TRX_MAGIC 0x30524448 /* "HDR0" */
#define TRX_VERSION 1
#define TRX_MAX_LEN 0x3A0000
#define TRX_NO_HEADER 1 /* Do not write TRX header */
struct trx_header {
uint32_t magic; /* "HDR0" */
uint32_t len; /* Length of file including header */
uint32_t crc32; /* 32-bit CRC from flag_version to end of file */
uint32_t flag_version; /* 0:15 flags, 16:31 version */
uint32_t offsets[3]; /* Offsets of partitions from start of header */
};
/**********************************************************************/
void usage(void) __attribute__ (( __noreturn__ ));
void usage(void)
{
fprintf(stderr, "Usage: trx [-o outfile] [-m maxlen] file [file [file]]\n");
exit(EXIT_FAILURE);
}
int main(int argc, char **argv)
{
FILE *out = stdout;
FILE *in;
char *ofn = NULL;
char *buf;
char *e;
int c, i;
size_t n;
uint32_t cur_len;
unsigned long maxlen = TRX_MAX_LEN;
struct trx_header *p;
fprintf(stderr, "mjn3's trx replacement - v0.81\n");
while ((c = getopt(argc, argv, "o:m:")) != -1) {
switch (c) {
case 'o':
ofn = optarg;
break;
case 'm':
errno = 0;
maxlen = strtoul(optarg, &e, 0);
if (errno || (e == optarg) || *e) {
fprintf(stderr, "illegal numeric string\n");
usage();
}
#undef ROUND
#define ROUND 0x1000
if (maxlen & (ROUND-1)) {
maxlen += (ROUND - (maxlen & (ROUND-1)));
}
if (maxlen < ROUND) {
fprintf(stderr, "maxlen too small (or wrapped)\n");
usage();
}
break;
default:
usage();
}
}
if (ofn && !(out = fopen(ofn, "w"))) {
fprintf(stderr, "can not open \"%s\" for writing\n", ofn);
usage();
}
if (optind == argc) {
fprintf(stderr, "we require at least one arg\n");
usage();
}
if (argc - optind > 3) {
fprintf(stderr, "too many args: %d > 3\n", argc - optind);
usage();
}
if (maxlen > TRX_MAX_LEN) {
fprintf(stderr, "WARNING: maxlen exceeds default maximum! Beware of overwriting nvram!\n");
}
if (!(buf = malloc(maxlen))) {
fprintf(stderr, "malloc failed\n");
return EXIT_FAILURE;
}
p = (struct trx_header *) buf;
p->magic = STORE32_LE(TRX_MAGIC);
cur_len = sizeof(struct trx_header);
p->flag_version = STORE32_LE((TRX_VERSION << 16));
i = 0;
while (optind < argc) {
p->offsets[i++] = STORE32_LE(cur_len);
if (!(in = fopen(argv[optind], "r"))) {
fprintf(stderr, "can not open \"%s\" for reading\n", argv[optind]);
usage();
}
n = fread(buf + cur_len, 1, maxlen - cur_len, in);
if (!feof(in)) {
fprintf(stderr, "fread failure or file \"%s\" too large\n",
argv[optind]);
fclose(in);
return EXIT_FAILURE;
}
fclose(in);
++optind;
if (optind < argc) {
#undef ROUND
#define ROUND 4
if (n & (ROUND-1)) {
memset(buf + cur_len + n, 0, ROUND - (n & (ROUND-1)));
n += ROUND - (n & (ROUND-1));
}
}
cur_len += n;
}
#undef ROUND
#define ROUND 0x1000
n = cur_len & (ROUND-1);
if (n) {
memset(buf + cur_len, 0, ROUND - n);
cur_len += ROUND - n;
}
p->crc32 = crc32buf((char *) &p->flag_version,
cur_len - offsetof(struct trx_header, flag_version));
p->crc32 = STORE32_LE(p->crc32);
p->len = STORE32_LE(cur_len);
if (!fwrite(buf, cur_len, 1, out) || fflush(out)) {
fprintf(stderr, "fwrite failed\n");
return EXIT_FAILURE;
}
fclose(out);
return EXIT_SUCCESS;
}
/**********************************************************************/
/* The following was grabbed and tweaked from the old snippets collection
* of public domain C code. */
/**********************************************************************\
|* Demonstration program to compute the 32-bit CRC used as the frame *|
|* check sequence in ADCCP (ANSI X3.66, also known as FIPS PUB 71 *|
|* and FED-STD-1003, the U.S. versions of CCITT's X.25 link-level *|
|* protocol). The 32-bit FCS was added via the Federal Register, *|
|* 1 June 1982, p.23798. I presume but don't know for certain that *|
|* this polynomial is or will be included in CCITT V.41, which *|
|* defines the 16-bit CRC (often called CRC-CCITT) polynomial. FIPS *|
|* PUB 78 says that the 32-bit FCS reduces otherwise undetected *|
|* errors by a factor of 10^-5 over 16-bit FCS. *|
\**********************************************************************/
/* Copyright (C) 1986 Gary S. Brown. You may use this program, or
code or tables extracted from it, as desired without restriction.*/
/* First, the polynomial itself and its table of feedback terms. The */
/* polynomial is */
/* X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 */
/* Note that we take it "backwards" and put the highest-order term in */
/* the lowest-order bit. The X^32 term is "implied"; the LSB is the */
/* X^31 term, etc. The X^0 term (usually shown as "+1") results in */
/* the MSB being 1. */
/* Note that the usual hardware shift register implementation, which */
/* is what we're using (we're merely optimizing it by doing eight-bit */
/* chunks at a time) shifts bits into the lowest-order term. In our */
/* implementation, that means shifting towards the right. Why do we */
/* do it this way? Because the calculated CRC must be transmitted in */
/* order from highest-order term to lowest-order term. UARTs transmit */
/* characters in order from LSB to MSB. By storing the CRC this way, */
/* we hand it to the UART in the order low-byte to high-byte; the UART */
/* sends each low-bit to hight-bit; and the result is transmission bit */
/* by bit from highest- to lowest-order term without requiring any bit */
/* shuffling on our part. Reception works similarly. */
/* The feedback terms table consists of 256, 32-bit entries. Notes: */
/* */
/* 1. The table can be generated at runtime if desired; code to do so */
/* is shown later. It might not be obvious, but the feedback */
/* terms simply represent the results of eight shift/xor opera- */
/* tions for all combinations of data and CRC register values. */
/* */
/* 2. The CRC accumulation logic is the same for all CRC polynomials, */
/* be they sixteen or thirty-two bits wide. You simply choose the */
/* appropriate table. Alternatively, because the table can be */
/* generated at runtime, you can start by generating the table for */
/* the polynomial in question and use exactly the same "updcrc", */
/* if your application needn't simultaneously handle two CRC */
/* polynomials. (Note, however, that XMODEM is strange.) */
/* */
/* 3. For 16-bit CRCs, the table entries need be only 16 bits wide; */
/* of course, 32-bit entries work OK if the high 16 bits are zero. */
/* */
/* 4. The values must be right-shifted by eight bits by the "updcrc" */
/* logic; the shift must be unsigned (bring in zeroes). On some */
/* hardware you could probably optimize the shift in assembler by */
/* using byte-swap instructions. */
static const uint32_t crc_32_tab[] = { /* CRC polynomial 0xedb88320 */
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
#define UPDC32(octet,crc) (crc_32_tab[((crc) ^ (octet)) & 0xff] ^ ((crc) >> 8))
uint32_t crc32buf(char *buf, size_t len)
{
uint32_t crc;
crc = 0xFFFFFFFF;
for ( ; len; --len, ++buf)
{
crc = UPDC32(*buf, crc);
}
return crc;
}