dahdi-tools/xpp/astribank_allow.c

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/*
* Written by Oron Peled <oron@actcom.co.il> and
* Alex Landau <alex.landau@xorcom.com>
* Copyright (C) 2008, Xorcom
*
* All rights reserved.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <assert.h>
#include <getopt.h>
#include <time.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <ctype.h>
#include "mpp.h"
#include "mpptalk.h"
#include <debug.h>
static const char rcsid[] = "$Id$";
#define DBG_MASK 0x80
static char *progname;
static void usage()
{
fprintf(stderr, "Usage: %s [options...] -D {/proc/bus/usb|/dev/bus/usb}/<bus>/<dev> options\n", progname);
fprintf(stderr, "\tOptions:\n");
fprintf(stderr, "\t\t[-v] # Increase verbosity\n");
fprintf(stderr, "\t\t[-d mask] # Debug mask (0xFF for everything)\n");
fprintf(stderr, "\t\t[-w] # Write capabilities to EEPROM, otherwise read capabilities\n");
fprintf(stderr, "\t\t[-f filename] # License filename (stdin/stdout if not specified)\n\n");
exit(1);
}
static int capabilities_burn(
struct astribank_device *astribank,
struct eeprom_table *eeprom_table,
struct capabilities *capabilities,
struct capkey *key)
{
int ret;
INFO("Burning capabilities\n");
ret = mpp_caps_set(astribank, eeprom_table, capabilities, key);
if(ret < 0) {
ERR("Capabilities burning failed: %d\n", ret);
return ret;
}
INFO("Done\n");
return 0;
}
static int bin_to_file(void *buf, int len, FILE *f)
{
static int bytes_on_line;
unsigned char *p = buf;
if (buf == NULL) {
if (bytes_on_line != 0) {
if (fprintf(f, "\n") != 1)
return -1;
bytes_on_line = 0;
}
return 0;
}
int i;
for (i = 0; i < len; i++) {
if (fprintf(f, "%02x", *p++) != 2)
return -1;
bytes_on_line++;
if (bytes_on_line >= 16) {
if (fprintf(f, "\n") != 1)
return -1;
bytes_on_line = 0;
}
}
return 0;
}
static int write_to_file(struct eeprom_table *eeprom_table, struct capabilities *caps, struct capkey *key, FILE *f)
{
fprintf(f, "-----BEGIN XORCOM LICENSE BLOCK-----\n");
fprintf(f, "Version: 1.0\n");
fprintf(f, "Timestamp: %u\n", caps->timestamp);
fprintf(f, "Serial: %.*s\n", LABEL_SIZE, eeprom_table->label);
fprintf(f, "Capabilities.Port.FXS: %d\n", caps->ports_fxs);
fprintf(f, "Capabilities.Port.FXO: %d\n", caps->ports_fxo);
fprintf(f, "Capabilities.Port.BRI: %d\n", caps->ports_bri);
fprintf(f, "Capabilities.Port.PRI: %d\n", caps->ports_pri);
fprintf(f, "Capabilities.Port.ECHO: %d\n", caps->ports_echo);
fprintf(f, "Capabilities.Twinstar: %d\n", CAP_EXTRA_TWINSTAR(caps));
fprintf(f, "Data:\n");
bin_to_file(eeprom_table, sizeof(*eeprom_table), f);
bin_to_file(caps, sizeof(*caps), f);
bin_to_file(key, sizeof(*key), f);
bin_to_file(NULL, 0, f);
fprintf(f, "-----END XORCOM LICENSE BLOCK-----\n");
return 0;
}
/*
* Removes whitespace on both sizes of the string.
* Returns a pointer to the first non-space char. The string
* is modified in place to trim trailing whitespace.
* If the whole string is whitespace, returns NULL.
*/
char *trim(char *s)
{
int len = strlen(s);
while (len > 0 && isspace(s[len-1])) {
len--;
}
if (len == 0)
return NULL;
s[len] = '\0';
while (isspace(*s))
s++;
/* *s is not a space, since in this case we'd return NULL above */
return s;
}
int get_key_value(char *line, char **key, char **value)
{
char *p = strchr(line, ':');
if (p == NULL)
return -1;
*p = '\0';
*key = trim(line);
*value = trim(p + 1);
return 0;
}
static int hex_digit_to_int(char c)
{
if (c >= '0' && c <= '9')
return c - '0';
else if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
else
return -1;
}
static int str_to_bin(char *line, void *buf, int maxlen)
{
static int offset;
unsigned char *p = buf;
if (strlen(line) % 2 != 0)
return -1;
while (offset < maxlen && *line) {
uint8_t value;
char c = hex_digit_to_int(*line++);
if (c < 0 || *line == '\0')
return -1;
value = c << 4;
c = hex_digit_to_int(*line++);
if (c < 0)
return -1;
value |= c;
p[offset++] = value;
}
if (offset == maxlen && *line)
return -1;
return offset;
}
static int read_from_file(struct eeprom_table *eeprom_table, struct capabilities *caps, struct capkey *capkey, FILE *f)
{
char buf[256];
char *line, *key, *value;
int state = 0;
int lineno = 0;
struct table {
struct eeprom_table eeprom_table;
struct capabilities capabilities;
struct capkey capkey;
} PACKED table;
memset(&table, 0, sizeof(struct table));
/*
* states:
* 0: start - before BEGIN_LICENSE_BLOCK line. on BEGIN_LICENSE_BLOCK line goto 1.
* 1: read Version, goto 2. if not version line then error.
* 2: after BEGIN line. split line into key:value. if line is Data:, goto 3.
* 3: read binary data. if line is END_LICENSE_BLOCK goto 4.
* 4: END_LICENSE_BLOCK - ignore lines.
*/
while (fgets(buf, 256, f) != NULL) {
lineno++;
int len = strlen(buf);
if (len > 0 && buf[len-1] != '\n') {
ERR("Line %d: Line too long\n", lineno);
return -1;
}
line = trim(buf);
if (line == NULL) {
if (state > 0 && state < 4) {
ERR("Line %d: Empty line\n", lineno);
return -1;
}
else
continue;
}
switch (state) {
case 0:
if (strcmp(line, "-----BEGIN XORCOM LICENSE BLOCK-----") == 0)
state = 1;
else {
ERR("Line %d: Invalid license begin block\n", lineno);
return -1;
}
break;
case 1:
if (get_key_value(line, &key, &value) < 0) {
ERR("Line %d: Can't parse line\n", lineno);
return -1;
}
if (strcmp(key, "Version") == 0) {
if (strcmp(value, "1.0") == 0) {
state = 2;
} else {
ERR("Line %d: Unknown license file version '%s', need version '1.0'\n", lineno, value);
return -1;
}
} else {
ERR("Line %d: No license file version\n", lineno);
return -1;
}
break;
case 2:
if (get_key_value(line, &key, &value) < 0) {
ERR("Line %d: Can't parse line\n", lineno);
return -1;
}
if (strcmp(key, "Data") == 0) {
state = 3;
break;
}
break;
case 3:
if (strcmp(line, "-----END XORCOM LICENSE BLOCK-----") == 0) {
state = 4;
break;
}
if (str_to_bin(line, &table, sizeof(table)) < 0) {
ERR("Line %d: Error in data block\n", lineno);
return -1;
}
break;
case 4:
break;
}
}
if (state != 4) {
ERR("Invalid license file\n");
return -1;
}
memcpy(eeprom_table, &table.eeprom_table, sizeof(*eeprom_table));
memcpy(caps, &table.capabilities, sizeof(*caps));
memcpy(capkey, &table.capkey, sizeof(*capkey));
return 0;
}
int main(int argc, char *argv[])
{
char *devpath = NULL;
struct astribank_device *astribank;
struct eeprom_table eeprom_table;
struct capabilities caps;
struct capkey key;
const char options[] = "vd:D:wf:";
int do_write = 0;
FILE *file;
char *filename = NULL;
int ret;
progname = argv[0];
while (1) {
int c;
c = getopt (argc, argv, options);
if (c == -1)
break;
switch (c) {
case 'D':
devpath = optarg;
break;
case 'v':
verbose++;
break;
case 'd':
debug_mask = strtoul(optarg, NULL, 0);
break;
case 'w':
do_write = 1;
break;
case 'f':
filename = optarg;
break;
case 'h':
default:
ERR("Unknown option '%c'\n", c);
usage();
}
}
if(!devpath) {
ERR("Missing device path\n");
usage();
}
DBG("Startup %s\n", devpath);
if((astribank = mpp_init(devpath, 1)) == NULL) {
ERR("Failed initializing MPP\n");
return 1;
}
if(astribank->eeprom_type != EEPROM_TYPE_LARGE) {
ERR("Cannot use this program with astribank EEPROM type %d (need %d)\n",
astribank->eeprom_type, EEPROM_TYPE_LARGE);
return 1;
}
ret = mpp_caps_get(astribank, &eeprom_table, &caps, &key);
if(ret < 0) {
ERR("Failed to get original capabilities: %d\n", ret);
return 1;
}
if (do_write) {
/* update capabilities based on input file */
file = stdin;
if (filename) {
file = fopen(filename, "r");
if (file == NULL) {
ERR("Can't open file '%s'\n", filename);
return 1;
}
}
ret = read_from_file(&eeprom_table, &caps, &key, file);
if (ret < 0) {
ERR("Failed to read capabilities from file: %d\n", ret);
return 1;
}
show_capabilities(&caps, stderr);
if (capabilities_burn(astribank, &eeprom_table, &caps, &key) < 0)
return 1;
if (file != stdin)
fclose(file);
} else {
/* print capabilities to stdout */
file = stdout;
if (filename) {
file = fopen(filename, "w");
if (file == NULL) {
ERR("Can't create file '%s'\n", filename);
return 1;
}
}
ret = write_to_file(&eeprom_table, &caps, &key, file);
if (ret < 0) {
ERR("Failed to write capabilities to file: %d\n", ret);
return 1;
}
if (file != stdout)
fclose(file);
}
mpp_exit(astribank);
return 0;
}