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-rw-r--r--contrib/epee/include/fnv1.h45
-rw-r--r--contrib/epee/include/hex.h5
-rw-r--r--contrib/epee/include/wipeable_string.h28
-rw-r--r--contrib/epee/src/hex.cpp10
-rw-r--r--contrib/epee/src/wipeable_string.cpp112
5 files changed, 194 insertions, 6 deletions
diff --git a/contrib/epee/include/fnv1.h b/contrib/epee/include/fnv1.h
new file mode 100644
index 000000000..c04389bca
--- /dev/null
+++ b/contrib/epee/include/fnv1.h
@@ -0,0 +1,45 @@
+// Copyright (c) 2018, The Monero Project
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+// conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+// of conditions and the following disclaimer in the documentation and/or other
+// materials provided with the distribution.
+//
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+// used to endorse or promote products derived from this software without specific
+// prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+namespace epee
+{
+
+namespace fnv
+{
+ inline uint64_t FNV1a(const char *ptr, size_t sz)
+ {
+ uint64_t h = 0xcbf29ce484222325;
+ for (size_t i = 0; i < sz; ++i)
+ h = (h ^ *(const uint8_t*)ptr++) * 0x100000001b3;
+ return h;
+ }
+}
+
+}
diff --git a/contrib/epee/include/hex.h b/contrib/epee/include/hex.h
index e960da1d2..02600c320 100644
--- a/contrib/epee/include/hex.h
+++ b/contrib/epee/include/hex.h
@@ -33,6 +33,7 @@
#include <iosfwd>
#include <string>
+#include "wipeable_string.h"
#include "span.h"
namespace epee
@@ -41,6 +42,8 @@ namespace epee
{
//! \return A std::string containing hex of `src`.
static std::string string(const span<const std::uint8_t> src);
+ //! \return A epee::wipeable_string containing hex of `src`.
+ static epee::wipeable_string wipeable_string(const span<const std::uint8_t> src);
//! \return An array containing hex of `src`.
template<std::size_t N>
@@ -59,6 +62,8 @@ namespace epee
static void formatted(std::ostream& out, const span<const std::uint8_t> src);
private:
+ template<typename T> T static convert(const span<const std::uint8_t> src);
+
//! Write `src` bytes as hex to `out`. `out` must be twice the length
static void buffer_unchecked(char* out, const span<const std::uint8_t> src) noexcept;
};
diff --git a/contrib/epee/include/wipeable_string.h b/contrib/epee/include/wipeable_string.h
index 70d1a9586..4cebe5fdf 100644
--- a/contrib/epee/include/wipeable_string.h
+++ b/contrib/epee/include/wipeable_string.h
@@ -28,28 +28,43 @@
#pragma once
+#include <boost/optional/optional_fwd.hpp>
#include <stddef.h>
#include <vector>
#include <string>
+#include "fnv1.h"
namespace epee
{
class wipeable_string
{
public:
+ typedef char value_type;
+
wipeable_string() {}
wipeable_string(const wipeable_string &other);
wipeable_string(wipeable_string &&other);
wipeable_string(const std::string &other);
wipeable_string(std::string &&other);
wipeable_string(const char *s);
+ wipeable_string(const char *s, size_t len);
~wipeable_string();
void wipe();
void push_back(char c);
- void pop_back();
+ void operator+=(char c);
+ void operator+=(const std::string &s);
+ void operator+=(const epee::wipeable_string &s);
+ void operator+=(const char *s);
+ void append(const char *ptr, size_t len);
+ char pop_back();
const char *data() const noexcept { return buffer.data(); }
+ char *data() noexcept { return buffer.data(); }
size_t size() const noexcept { return buffer.size(); }
+ size_t length() const noexcept { return buffer.size(); }
bool empty() const noexcept { return buffer.empty(); }
+ void trim();
+ void split(std::vector<wipeable_string> &fields) const;
+ boost::optional<wipeable_string> parse_hexstr() const;
void resize(size_t sz);
void reserve(size_t sz);
void clear();
@@ -65,3 +80,14 @@ namespace epee
std::vector<char> buffer;
};
}
+
+namespace std
+{
+ template<> struct hash<epee::wipeable_string>
+ {
+ size_t operator()(const epee::wipeable_string &s) const
+ {
+ return epee::fnv::FNV1a(s.data(), s.size());
+ }
+ };
+}
diff --git a/contrib/epee/src/hex.cpp b/contrib/epee/src/hex.cpp
index c143b2dc2..5c8acc8be 100644
--- a/contrib/epee/src/hex.cpp
+++ b/contrib/epee/src/hex.cpp
@@ -52,17 +52,21 @@ namespace epee
}
}
- std::string to_hex::string(const span<const std::uint8_t> src)
+ template<typename T>
+ T to_hex::convert(const span<const std::uint8_t> src)
{
if (std::numeric_limits<std::size_t>::max() / 2 < src.size())
throw std::range_error("hex_view::to_string exceeded maximum size");
- std::string out{};
+ T out{};
out.resize(src.size() * 2);
- buffer_unchecked(std::addressof(out[0]), src);
+ to_hex::buffer_unchecked((char*)out.data(), src); // can't see the non const version in wipeable_string??
return out;
}
+ std::string to_hex::string(const span<const std::uint8_t> src) { return convert<std::string>(src); }
+ epee::wipeable_string to_hex::wipeable_string(const span<const std::uint8_t> src) { return convert<epee::wipeable_string>(src); }
+
void to_hex::buffer(std::ostream& out, const span<const std::uint8_t> src)
{
write_hex(std::ostreambuf_iterator<char>{out}, src);
diff --git a/contrib/epee/src/wipeable_string.cpp b/contrib/epee/src/wipeable_string.cpp
index 6ed4ee8a2..7c9722765 100644
--- a/contrib/epee/src/wipeable_string.cpp
+++ b/contrib/epee/src/wipeable_string.cpp
@@ -26,11 +26,22 @@
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#include <boost/optional/optional.hpp>
#include <string.h>
#include "memwipe.h"
#include "misc_log_ex.h"
#include "wipeable_string.h"
+namespace
+{
+ int atolower(int c)
+ {
+ if (c >= 'A' && c <= 'Z')
+ c |= 32;
+ return c;
+ }
+}
+
namespace epee
{
@@ -69,6 +80,12 @@ wipeable_string::wipeable_string(const char *s)
memcpy(buffer.data(), s, size());
}
+wipeable_string::wipeable_string(const char *s, size_t len)
+{
+ grow(len);
+ memcpy(buffer.data(), s, len);
+}
+
wipeable_string::~wipeable_string()
{
wipe();
@@ -109,9 +126,100 @@ void wipeable_string::push_back(char c)
buffer.back() = c;
}
-void wipeable_string::pop_back()
+void wipeable_string::operator+=(char c)
+{
+ push_back(c);
+}
+
+void wipeable_string::append(const char *ptr, size_t len)
+{
+ const size_t orgsz = size();
+ CHECK_AND_ASSERT_THROW_MES(orgsz < std::numeric_limits<size_t>::max() - len, "Appended data too large");
+ grow(orgsz + len);
+ if (len > 0)
+ memcpy(data() + orgsz, ptr, len);
+}
+
+void wipeable_string::operator+=(const char *s)
+{
+ append(s, strlen(s));
+}
+
+void wipeable_string::operator+=(const epee::wipeable_string &s)
+{
+ append(s.data(), s.size());
+}
+
+void wipeable_string::operator+=(const std::string &s)
+{
+ append(s.c_str(), s.size());
+}
+
+void wipeable_string::trim()
+{
+ size_t prefix = 0;
+ while (prefix < size() && data()[prefix] == ' ')
+ ++prefix;
+ if (prefix > 0)
+ memmove(buffer.data(), buffer.data() + prefix, size() - prefix);
+
+ size_t suffix = 0;
+ while (suffix < size()-prefix && data()[size() - 1 - prefix - suffix] == ' ')
+ ++suffix;
+
+ resize(size() - prefix - suffix);
+}
+
+void wipeable_string::split(std::vector<wipeable_string> &fields) const
+{
+ fields.clear();
+ size_t len = size();
+ const char *ptr = data();
+ bool space = true;
+ while (len--)
+ {
+ const char c = *ptr++;
+ if (c != ' ')
+ {
+ if (space)
+ fields.push_back({});
+ fields.back().push_back(c);
+ }
+ space = c == ' ';
+ }
+}
+
+boost::optional<epee::wipeable_string> wipeable_string::parse_hexstr() const
+{
+ if (size() % 2 != 0)
+ return boost::none;
+ boost::optional<epee::wipeable_string> res = epee::wipeable_string("");
+ const size_t len = size();
+ const char *d = data();
+ res->grow(0, len / 2);
+ static constexpr const char hex[] = u8"0123456789abcdef";
+ for (size_t i = 0; i < len; i += 2)
+ {
+ char c = atolower(d[i]);
+ const char *ptr0 = strchr(hex, c);
+ if (!ptr0)
+ return boost::none;
+ c = atolower(d[i+1]);
+ const char *ptr1 = strchr(hex, c);
+ if (!ptr1)
+ return boost::none;
+ res->push_back(((ptr0-hex)<<4) | (ptr1-hex));
+ }
+ return res;
+}
+
+char wipeable_string::pop_back()
{
- resize(size() - 1);
+ const size_t sz = size();
+ CHECK_AND_ASSERT_THROW_MES(sz > 0, "Popping from an empty string");
+ const char c = buffer.back();
+ resize(sz - 1);
+ return c;
}
void wipeable_string::resize(size_t sz)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 04:16:16 +0000