+++ /dev/null
-.\"
-.\" Copyright © 2016 Keith Packard <keithp@keithp.com>
-.\"
-.\" 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.
-.\"
-.\"
-.TH AO-LOAD 1 "ao-chaosread" ""
-.SH NAME
-ao-chaosread \- read raw noise source from chaoskey
-.SH SYNOPSIS
-.B "ao-chaosread"
-.SH DESCRIPTION
-.I ao-chaosread
-reads ADC values from the noise source on the attached ChaosKey device.
-.SH OPTIONS
-.TP
-\-s serial | --serial serial
-This selects a ChaosKey by serial number instead of using the first
-one found.
-.TP
-\-l length | --length length
-Set the amount of data to read. Suffixes 'k', 'M' and 'G' are
-supported. The default is 1k.
-.TP
-\-i | --infinite
-Read an unlimited amount of data.
-.TP
-\-b | --bytes
-For each 16-bit value read, output bits 1-8 as a byte, don't output
-bit 0 or bits 9-15 at all.
-.TP
-\-c | --cooked
-Read whitened data from the device. The default is to read raw data
-from the noise source.
-.TP
-\-r | --raw
-Read raw data from the noise source. This is the default.
-.TP
-\-f | --flash
-Read the contents of flash memory on the device. This loops through
-flash memory, so you can read the contents more than once, but there's
-no way to reset the pointer back to the start other than making sure
-you read the whole contents.
-.SH USAGE
-.I ao-chaosread
-reads noise data.
-.SH AUTHOR
-Keith Packard
+++ /dev/null
-/*
- * Copyright © 2016 Keith Packard <keithp@keithp.com>
- *
- * 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.
- */
-
-#include <stdio.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <libusb.h>
-#include <getopt.h>
-#include <string.h>
-#include <strings.h>
-
-#define CHAOS_SIZE 64
-
-#define CHAOS_VENDOR 0x1d50
-#define CHAOS_PRODUCT 0x60c6
-
-struct chaoskey {
- libusb_context *ctx;
- libusb_device_handle *handle;
- int kernel_active;
-};
-
-static libusb_device_handle *
-chaoskey_match(libusb_device *dev, char *match_serial)
-{
- struct libusb_device_descriptor desc;
- int ret;
- int match_len;
- char *device_serial = NULL;
- libusb_device_handle *handle = NULL;
-
- ret = libusb_get_device_descriptor(dev, &desc);
- if (ret < 0) {
- fprintf(stderr, "failed to get device descriptor: %s\n", libusb_strerror(ret));
- return 0;
- }
-
- if (desc.idVendor != CHAOS_VENDOR)
- return NULL;
- if (desc.idProduct != CHAOS_PRODUCT)
- return NULL;
-
- ret = libusb_open(dev, &handle);
-
- if (match_serial == NULL)
- return handle;
-
- if (ret < 0) {
- fprintf(stderr, "failed to open device: %s\n", libusb_strerror(ret));
- return NULL;
- }
-
- match_len = strlen(match_serial);
- device_serial = malloc(match_len + 2);
-
- if (!device_serial) {
- fprintf(stderr, "malloc failed\n");
- goto out;
- }
-
- ret = libusb_get_string_descriptor_ascii(handle, desc.iSerialNumber, (unsigned char *) device_serial, match_len + 1);
-
- if (ret < 0) {
- fprintf(stderr, "failed to get serial number: %s\n", libusb_strerror(ret));
- goto out;
- }
-
- device_serial[ret] = '\0';
-
- ret = strcmp(device_serial, match_serial);
- free(device_serial);
- if (ret)
- goto out;
-
- return handle;
-
-out:
- if (handle)
- libusb_close(handle);
- return 0;
-}
-
-static struct chaoskey *
-chaoskey_open(char *serial)
-{
- struct chaoskey *ck;
- int ret;
- ssize_t num;
- libusb_device **list;
- int d;
-
- ck = calloc(sizeof (struct chaoskey), 1);
- if (!ck)
- goto out;
- ret = libusb_init(&ck->ctx);
- if (ret ) {
- fprintf(stderr, "libusb_init failed: %s\n", libusb_strerror(ret));
- goto out;
- }
-
- num = libusb_get_device_list(ck->ctx, &list);
- if (num < 0) {
- fprintf(stderr, "libusb_get_device_list failed: %s\n", libusb_strerror(num));
- goto out;
- }
-
- for (d = 0; d < num; d++) {
- libusb_device_handle *handle;
-
- handle = chaoskey_match(list[d], serial);
- if (handle) {
- ck->handle = handle;
- break;
- }
- }
-
- libusb_free_device_list(list, 1);
-
- if (!ck->handle) {
- if (serial)
- fprintf (stderr, "No chaoskey matching %s\n", serial);
- else
- fprintf (stderr, "No chaoskey\n");
- goto out;
- }
-
- ck->kernel_active = libusb_kernel_driver_active(ck->handle, 0);
- if (ck->kernel_active) {
- ret = libusb_detach_kernel_driver(ck->handle, 0);
- if (ret)
- goto out;
- }
-
- ret = libusb_claim_interface(ck->handle, 0);
- if (ret)
- goto out;
-
- return ck;
-out:
- if (ck->kernel_active)
- libusb_attach_kernel_driver(ck->handle, 0);
- if (ck->ctx)
- libusb_exit(ck->ctx);
- free(ck);
- return NULL;
-}
-
-#define COOKED_ENDPOINT 0x85
-#define RAW_ENDPOINT 0x86
-#define FLASH_ENDPOINT 0x87
-
-static int
-chaoskey_read(struct chaoskey *ck, int endpoint, void *buffer, int len)
-{
- uint8_t *buf = buffer;
- int total = 0;
-
- while (len) {
- int ret;
- int transferred;
-
- ret = libusb_bulk_transfer(ck->handle, endpoint, buf, len, &transferred, 10000);
- if (ret) {
- if (total)
- return total;
- else {
- errno = EIO;
- return -1;
- }
- }
- len -= transferred;
- buf += transferred;
- total += transferred;
- }
- return total;
-}
-
-static const struct option options[] = {
- { .name = "serial", .has_arg = 1, .val = 's' },
- { .name = "length", .has_arg = 1, .val = 'l' },
- { .name = "infinite", .has_arg = 0, .val = 'i' },
- { .name = "bytes", .has_arg = 0, .val = 'b' },
- { .name = "cooked", .has_arg = 0, .val = 'c' },
- { .name = "raw", .has_arg = 0, .val = 'r' },
- { .name = "flash", .has_arg = 0, .val = 'f' },
- { 0, 0, 0, 0},
-};
-
-static void usage(char *program)
-{
- fprintf(stderr, "usage: %s [--serial=<serial>] [--length=<length>[kMG]] [--infinite] [--bytes] [--cooked] [--raw] [--flash]\n", program);
- exit(1);
-}
-
-int
-main (int argc, char **argv)
-{
- struct chaoskey *ck;
- uint16_t buf[512];
- int got;
- int c;
- char *serial = NULL;
- char *length_string;
- char *length_end;
- unsigned long length = sizeof(buf);
- int this_time;
- int infinite = 0;
- int bytes = 0;
- int endpoint = RAW_ENDPOINT;
-
- while ((c = getopt_long(argc, argv, "s:l:ibcrf", options, NULL)) != -1) {
- switch (c) {
- case 's':
- serial = optarg;
- break;
- case 'l':
- length_string = optarg;
- length = strtoul(length_string, &length_end, 10);
- if (!strcasecmp(length_end, "k"))
- length *= 1024;
- else if (!strcasecmp(length_end, "m"))
- length *= 1024 * 1024;
- else if (!strcasecmp(length_end, "g"))
- length *= 1024 * 1024 * 1024;
- else if (strlen(length_end))
- usage(argv[0]);
- break;
- case 'i':
- infinite = 1;
- break;
- case 'b':
- bytes = 1;
- break;
- case 'c':
- endpoint = COOKED_ENDPOINT;
- break;
- case 'r':
- endpoint = RAW_ENDPOINT;
- break;
- case 'f':
- endpoint = FLASH_ENDPOINT;
- break;
- default:
- usage(argv[0]);
- break;
- }
- }
-
- ck = chaoskey_open(serial);
- if (!ck)
- exit(1);
-
- if (bytes)
- length *= 2;
-
- while (length || infinite) {
- this_time = sizeof(buf);
- if (!infinite && length < sizeof(buf))
- this_time = (int) length;
- got = chaoskey_read(ck, endpoint, buf, this_time);
- if (got < 0) {
- perror("read");
- exit(1);
- }
- if (bytes) {
- int i;
- for (i = 0; i < got / 2; i++)
- putchar((buf[i] >> 1 & 0xff));
- } else {
- int i;
- int ret;
- for (i = 0; i < got; i += ret) {
- ret = write(1, ((char *) buf) + i, got - i);
- if (ret <= 0) {
- perror("write");
- exit(1);
- }
- }
- }
- length -= got;
- }
- exit(0);
-}
projects / fw / altos / commitdiff