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authorRobin Krahl <robin.krahl@ireas.org>2018-12-10 12:42:48 +0000
committerRobin Krahl <robin.krahl@ireas.org>2018-12-10 13:46:42 +0100
commit4615f5ecf96ef4637d814a4dfeab9c404b4a3667 (patch)
tree5bd65c78c1c913d44e8917c29e91895a9de450f6 /libnitrokey-v3.4/misc.cc
parentb126c5ba1e5a9f00859868d75900043d02a0031c (diff)
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Update to libnitrokey v3.4v3.4.0
Besides the changes listed in the changelog, this patch also changes the build system to be able to generate the version.cc file containing the library version.
Diffstat (limited to 'libnitrokey-v3.4/misc.cc')
-rw-r--r--libnitrokey-v3.4/misc.cc123
1 files changed, 123 insertions, 0 deletions
diff --git a/libnitrokey-v3.4/misc.cc b/libnitrokey-v3.4/misc.cc
new file mode 100644
index 0000000..59185f3
--- /dev/null
+++ b/libnitrokey-v3.4/misc.cc
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2015-2018 Nitrokey UG
+ *
+ * This file is part of libnitrokey.
+ *
+ * libnitrokey is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * libnitrokey 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 Lesser General Public License
+ * along with libnitrokey. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-3.0
+ */
+
+#include <sstream>
+#include <string>
+#include "misc.h"
+#include "inttypes.h"
+#include <cstdlib>
+#include <cstring>
+#include "LibraryException.h"
+#include <vector>
+
+namespace nitrokey {
+namespace misc {
+
+
+
+::std::vector<uint8_t> hex_string_to_byte(const char* hexString){
+ const size_t big_string_size = 257; //arbitrary 'big' number
+ const size_t s_size = strnlen(hexString, big_string_size);
+ const size_t d_size = s_size/2;
+ if (s_size%2!=0 || s_size>=big_string_size){
+ throw InvalidHexString(0);
+ }
+ auto data = ::std::vector<uint8_t>();
+ data.reserve(d_size);
+
+ char buf[3];
+ buf[2] = '\0';
+ for(size_t i=0; i<s_size; i++){
+
+ char c = hexString[i];
+ bool char_from_range = (('0' <= c && c <='9') || ('A' <= c && c <= 'F') || ('a' <= c && c<= 'f'));
+ if (!char_from_range){
+ throw InvalidHexString(c);
+ }
+ buf[i%2] = c;
+ if (i%2==1){
+ data.push_back( strtoul(buf, NULL, 16) & 0xFF );
+ }
+ }
+ return data;
+};
+
+#include <cctype>
+::std::string hexdump(const uint8_t *p, size_t size, bool print_header,
+ bool print_ascii, bool print_empty) {
+ ::std::stringstream out;
+ char formatbuf[128];
+ const uint8_t *pstart = p;
+
+ for (const uint8_t *pend = p + size; p < pend;) {
+ if (print_header){
+ snprintf(formatbuf, 128, "%04x\t", static_cast<int> (p - pstart));
+ out << formatbuf;
+ }
+
+ const uint8_t* pp = p;
+ for (const uint8_t *le = p + 16; p < le; p++) {
+ if (p < pend){
+ snprintf(formatbuf, 128, "%02x ", uint8_t(*p));
+ out << formatbuf;
+ } else {
+ if(print_empty)
+ out << "-- ";
+ }
+
+ }
+ if(print_ascii){
+ out << " ";
+ for (const uint8_t *le = pp + 16; pp < le && pp < pend; pp++) {
+ if (std::isgraph(*pp))
+ out << uint8_t(*pp);
+ else
+ out << '.';
+ }
+ }
+ out << ::std::endl;
+ }
+ return out.str();
+}
+
+static uint32_t _crc32(uint32_t crc, uint32_t data) {
+ int i;
+ crc = crc ^ data;
+
+ for (i = 0; i < 32; i++) {
+ if (crc & 0x80000000)
+ crc = (crc << 1) ^ 0x04C11DB7; // polynomial used in STM32
+ else
+ crc = (crc << 1);
+ }
+
+ return crc;
+}
+
+uint32_t stm_crc32(const uint8_t *data, size_t size) {
+ uint32_t crc = 0xffffffff;
+ const uint32_t *pend = (const uint32_t *)(data + size);
+ for (const uint32_t *p = (const uint32_t *)(data); p < pend; p++)
+ crc = _crc32(crc, *p);
+ return crc;
+}
+}
+}