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-rw-r--r--xpp/astribank_license.c340
1 files changed, 340 insertions, 0 deletions
diff --git a/xpp/astribank_license.c b/xpp/astribank_license.c
new file mode 100644
index 0000000..8eeb7c2
--- /dev/null
+++ b/xpp/astribank_license.c
@@ -0,0 +1,340 @@
+/*
+ * Written by Oron Peled <oron@actcom.co.il>
+ * Copyright (C) 2012, 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 <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <debug.h>
+#include "astribank_license.h"
+
+#define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0]))
+
+static const struct boundary {
+ const char *name;
+ const char *markers[2];
+} boundaries[] = {
+ [LICENSE_MARKER_NONE] = { /* Skip 0 */
+ },
+ [LICENSE_MARKER_XORCOM] = {
+ "Xorcom",
+ {
+ "-----BEGIN XORCOM LICENSE BLOCK-----",
+ "-----END XORCOM LICENSE BLOCK-----",
+ },
+ },
+ [LICENSE_MARKER_GENERIC] = {
+ "Generic",
+ {
+ "-----BEGIN TELEPHONY DEVICE LICENSE BLOCK-----",
+ "-----END TELEPHONY DEVICE LICENSE BLOCK-----",
+ }
+ },
+};
+
+void license_markers_help(const char *prefix, FILE *fp)
+{
+ int i;
+
+ fprintf(fp, "%sValid license markers:\n", prefix);
+ for (i = LICENSE_MARKER_NONE + 1; i < ARRAY_SIZE(boundaries); i++) {
+ const struct boundary *b = &boundaries[i];
+ if (b->markers[0] != 0)
+ fprintf(fp, "%s\t%d - %s\n", prefix, i, b->name);
+ }
+}
+
+int license_marker_valid(unsigned int which)
+{
+ if (which >= ARRAY_SIZE(boundaries))
+ return 0;
+ if (boundaries[which].markers[0] == NULL)
+ return 0;
+ return 1;
+}
+
+static const char *marker_string(unsigned int which, int end_marker)
+{
+ int selector = (end_marker) ? 1 : 0;
+
+ if (license_marker_valid(which)) {
+ return boundaries[which].markers[selector];
+ }
+ ERR("gen_marker: invalid marker %d\n", which);
+ return NULL;
+}
+
+static int marker_find(const char *str, int end_marker)
+{
+ int selector = (end_marker) ? 1 : 0;
+ int i;
+
+ for (i = LICENSE_MARKER_NONE + 1; i < ARRAY_SIZE(boundaries); i++) {
+ const struct boundary *b = &boundaries[i];
+ const char *marker_str = b->markers[selector];
+
+#if 0
+ DBG("marker_find(%s,%d)[%d]: %s\n",
+ str, end_marker, i, marker_str);
+#endif
+ if (!marker_str)
+ continue;
+ if (strcmp(str, marker_str) == 0)
+ return i;
+ }
+ 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;
+}
+
+int write_to_file(
+ struct eeprom_table *eeprom_table,
+ struct capabilities *caps,
+ struct capkey *key,
+ unsigned int marker,
+ FILE *f)
+{
+ fprintf(f, "%s\n", marker_string(marker, 0));
+ 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, "%s\n", marker_string(marker, 1));
+ 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.
+ */
+static 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;
+}
+
+static 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;
+}
+
+int read_from_file(
+ struct eeprom_table *eeprom_table,
+ struct capabilities *caps,
+ struct capkey *capkey,
+ unsigned int *used_marker,
+ FILE *f)
+{
+ char buf[256];
+ char *line, *key, *value;
+ int lineno = 0;
+ unsigned int license_marker_begin;
+ unsigned int license_marker_end;
+ struct table {
+ struct eeprom_table eeprom_table;
+ struct capabilities capabilities;
+ struct capkey capkey;
+ } PACKED table;
+ enum PARSE_STATES {
+ STATE_BEFORE_LICENSE = 0,
+ STATE_EXPECT_VERSION = 1,
+ STATE_EXPECT_DATA = 2,
+ STATE_READ_DATA = 3,
+ STATE_AFTER_LICENSE = 4,
+ } state = STATE_BEFORE_LICENSE;
+
+ 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 > STATE_BEFORE_LICENSE && state < STATE_AFTER_LICENSE) {
+ ERR("Line %d: Empty line\n", lineno);
+ return -1;
+ }
+ else
+ continue;
+ }
+ switch (state) {
+ case STATE_BEFORE_LICENSE:
+ license_marker_begin = marker_find(line, 0);
+ if (license_marker_begin)
+ state = STATE_EXPECT_VERSION;
+ else {
+ ERR("Line %d: Invalid license begin block\n", lineno);
+ return -1;
+ }
+ break;
+ case STATE_EXPECT_VERSION:
+ 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 = STATE_EXPECT_DATA;
+ } 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 STATE_EXPECT_DATA:
+ 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 = STATE_READ_DATA;
+ break;
+ }
+ break;
+ case STATE_READ_DATA:
+ license_marker_end = marker_find(line, 1);
+ if (license_marker_end) {
+ printf("DEBUG: end=%d begin=%d\n", license_marker_end, license_marker_begin);
+ if (license_marker_end != license_marker_begin) {
+ ERR("Line %d: End marker != Begin marker\n", lineno);
+ return -1;
+ }
+ state = STATE_AFTER_LICENSE;
+ break;
+ }
+ if (str_to_bin(line, &table, sizeof(table)) < 0) {
+ ERR("Line %d: Error in data block\n", lineno);
+ return -1;
+ }
+ break;
+ case STATE_AFTER_LICENSE:
+ break;
+
+ }
+ }
+ if (state != STATE_AFTER_LICENSE) {
+ 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;
+}
+
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