Update nitrokey crate to 0.4.0-alpha.3

This change updates the version of the nitrokey crate that we use to
0.4.0-alpha.3. This version is the supposedly last pre-release before
0.4.0, with no further major anticipated changes.
In order to integrate with this new version we have to adjust the way we
connect to a Nitrokey device by funneling those connection requests
through a global manager object. The rationale behind that step being
that the underlying libnitrokey actually cannot handle access of
multiple devices at the same time, and so the manager object is used to
prevent accidental wrong concurrent usage.
Because a device object now effectively keeps a reference to the
manager, we need to provide an additional lifetime to that and derived
objects.
Lastly, the use of a manager is also the reason why the tests had to be
adjusted to no longer accept device objects in their signatures, but
only the respective model for which to invoke the test. That is required
because, as elaborated earlier on, having a device object implies having
taken a reference to a manager (in that case owned by nitrokey-test),
and that reference clashes with the nitrocli code itself attempting to
take the manager. We side step this problem by merely accepting a Model
object, which can be passed around independently of the manager itself,
meaning that nitrokey-test does not need to hold such a reference while
the test is run.

Import subrepo nitrokey/:nitrokey at f150d59410eefdec2ae69b2422906a3d1d88aa07
Import subrepo nitrokey-sys/:nitrokey-sys at 8695e2c762807e033a86c8d03974b686d20cdd72
Import subrepo lazy-static/:lazy-static at b4b2b16aaa79dd7548e288455a0dbe4065bf4e1a

1 files changed, 123 insertions, 0 deletions

diff --git a/nitrokey-sys/libnitrokey-v3.5/misc.cc b/nitrokey-sys/libnitrokey-v3.5/misc.cc
new file mode 100644
index 0000000..59185f3
--- /dev/null
+++ b/nitrokey-sys/libnitrokey-v3.5/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;
+}
+}
+}