diff options
Diffstat (limited to 'contrib/epee')
| -rw-r--r-- | contrib/epee/include/fnv1.h | 45 | ||||
| -rw-r--r-- | contrib/epee/include/hex.h | 5 | ||||
| -rw-r--r-- | contrib/epee/include/mlocker.h | 87 | ||||
| -rw-r--r-- | contrib/epee/include/net/abstract_tcp_server2.h | 1 | ||||
| -rw-r--r-- | contrib/epee/include/net/abstract_tcp_server2.inl | 9 | ||||
| -rw-r--r-- | contrib/epee/include/net/http_protocol_handler.inl | 18 | ||||
| -rw-r--r-- | contrib/epee/include/net/http_server_handlers_map2.h | 1 | ||||
| -rw-r--r-- | contrib/epee/include/serialization/keyvalue_serialization.h | 9 | ||||
| -rw-r--r-- | contrib/epee/include/string_tools.h | 7 | ||||
| -rw-r--r-- | contrib/epee/include/wipeable_string.h | 28 | ||||
| -rw-r--r-- | contrib/epee/src/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | contrib/epee/src/hex.cpp | 10 | ||||
| -rw-r--r-- | contrib/epee/src/memwipe.c | 8 | ||||
| -rw-r--r-- | contrib/epee/src/mlocker.cpp | 182 | ||||
| -rw-r--r-- | contrib/epee/src/wipeable_string.cpp | 112 |
15 files changed, 508 insertions, 16 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/mlocker.h b/contrib/epee/include/mlocker.h new file mode 100644 index 000000000..d2fc2ed58 --- /dev/null +++ b/contrib/epee/include/mlocker.h @@ -0,0 +1,87 @@ +// 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 + +#include <map> +#include <boost/thread/mutex.hpp> + +namespace epee +{ + class mlocker + { + public: + mlocker(void *ptr, size_t len); + ~mlocker(); + + static size_t get_page_size(); + static size_t get_num_locked_pages(); + static size_t get_num_locked_objects(); + + static void lock(void *ptr, size_t len); + static void unlock(void *ptr, size_t len); + + private: + static size_t page_size; + static size_t num_locked_objects; + + static boost::mutex &mutex(); + static std::map<size_t, unsigned int> &map(); + static void lock_page(size_t page); + static void unlock_page(size_t page); + + void *ptr; + size_t len; + }; + + /// Locks memory while in scope + /// + /// Primarily useful for making sure that private keys don't get swapped out + // to disk + template <class T> + struct mlocked : public T { + using type = T; + + mlocked(): T() { mlocker::lock(this, sizeof(T)); } + mlocked(const T &t): T(t) { mlocker::lock(this, sizeof(T)); } + mlocked(const mlocked<T> &mt): T(mt) { mlocker::lock(this, sizeof(T)); } + mlocked(const T &&t): T(t) { mlocker::lock(this, sizeof(T)); } + mlocked(const mlocked<T> &&mt): T(mt) { mlocker::lock(this, sizeof(T)); } + mlocked<T> &operator=(const mlocked<T> &mt) { T::operator=(mt); return *this; } + ~mlocked() { mlocker::unlock(this, sizeof(T)); } + }; + + template<typename T> + T& unwrap(mlocked<T>& src) { return src; } + + template<typename T> + const T& unwrap(mlocked<T> const& src) { return src; } + + template <class T, size_t N> + using mlocked_arr = mlocked<std::array<T, N>>; +} diff --git a/contrib/epee/include/net/abstract_tcp_server2.h b/contrib/epee/include/net/abstract_tcp_server2.h index 7ca6ac872..b2c05ebb0 100644 --- a/contrib/epee/include/net/abstract_tcp_server2.h +++ b/contrib/epee/include/net/abstract_tcp_server2.h @@ -158,6 +158,7 @@ namespace net_utils std::list<boost::shared_ptr<connection<t_protocol_handler> > > m_self_refs; // add_ref/release support critical_section m_self_refs_lock; critical_section m_chunking_lock; // held while we add small chunks of the big do_send() to small do_send_chunk() + critical_section m_shutdown_lock; // held while shutting down t_connection_type m_connection_type; diff --git a/contrib/epee/include/net/abstract_tcp_server2.inl b/contrib/epee/include/net/abstract_tcp_server2.inl index 5b3550005..59a126163 100644 --- a/contrib/epee/include/net/abstract_tcp_server2.inl +++ b/contrib/epee/include/net/abstract_tcp_server2.inl @@ -649,6 +649,10 @@ PRAGMA_WARNING_DISABLE_VS(4355) template<class t_protocol_handler> bool connection<t_protocol_handler>::shutdown() { + CRITICAL_REGION_BEGIN(m_shutdown_lock); + if (m_was_shutdown) + return true; + m_was_shutdown = true; // Initiate graceful connection closure. m_timer.cancel(); boost::system::error_code ignored_ec; @@ -658,7 +662,7 @@ PRAGMA_WARNING_DISABLE_VS(4355) try { host_count(m_host, -1); } catch (...) { /* ignore */ } m_host = ""; } - m_was_shutdown = true; + CRITICAL_REGION_END(); m_protocol_handler.release_protocol(); return true; } @@ -667,6 +671,9 @@ PRAGMA_WARNING_DISABLE_VS(4355) bool connection<t_protocol_handler>::close() { TRY_ENTRY(); + auto self = safe_shared_from_this(); + if(!self) + return false; //_info("[sock " << socket_.native_handle() << "] Que Shutdown called."); m_timer.cancel(); size_t send_que_size = 0; diff --git a/contrib/epee/include/net/http_protocol_handler.inl b/contrib/epee/include/net/http_protocol_handler.inl index 0bdba0bfe..76db5346f 100644 --- a/contrib/epee/include/net/http_protocol_handler.inl +++ b/contrib/epee/include/net/http_protocol_handler.inl @@ -328,8 +328,10 @@ namespace net_utils inline bool analize_http_method(const boost::smatch& result, http::http_method& method, int& http_ver_major, int& http_ver_minor) { CHECK_AND_ASSERT_MES(result[0].matched, false, "simple_http_connection_handler::analize_http_method() assert failed..."); - http_ver_major = boost::lexical_cast<int>(result[11]); - http_ver_minor = boost::lexical_cast<int>(result[12]); + if (!boost::conversion::try_lexical_convert<int>(result[11], http_ver_major)) + return false; + if (!boost::conversion::try_lexical_convert<int>(result[12], http_ver_minor)) + return false; if(result[3].matched) method = http::http_method_options; @@ -351,13 +353,18 @@ namespace net_utils template<class t_connection_context> bool simple_http_connection_handler<t_connection_context>::handle_invoke_query_line() { - STATIC_REGEXP_EXPR_1(rexp_match_command_line, "^(((OPTIONS)|(GET)|(HEAD)|(POST)|(PUT)|(DELETE)|(TRACE)) (\\S+) HTTP/(\\d+).(\\d+))\r?\n", boost::regex::icase | boost::regex::normal); + STATIC_REGEXP_EXPR_1(rexp_match_command_line, "^(((OPTIONS)|(GET)|(HEAD)|(POST)|(PUT)|(DELETE)|(TRACE)) (\\S+) HTTP/(\\d+)\\.(\\d+))\r?\n", boost::regex::icase | boost::regex::normal); // 123 4 5 6 7 8 9 10 11 12 //size_t match_len = 0; boost::smatch result; if(boost::regex_search(m_cache, result, rexp_match_command_line, boost::match_default) && result[0].matched) { - analize_http_method(result, m_query_info.m_http_method, m_query_info.m_http_ver_hi, m_query_info.m_http_ver_hi); + if (!analize_http_method(result, m_query_info.m_http_method, m_query_info.m_http_ver_hi, m_query_info.m_http_ver_hi)) + { + m_state = http_state_error; + MERROR("Failed to analyze method"); + return false; + } m_query_info.m_URI = result[10]; if (!parse_uri(m_query_info.m_URI, m_query_info.m_uri_content)) { @@ -554,7 +561,8 @@ namespace net_utils if(!(boost::regex_search( str, result, rexp_mach_field, boost::match_default) && result[0].matched)) return false; - len = boost::lexical_cast<size_t>(result[0]); + try { len = boost::lexical_cast<size_t>(result[0]); } + catch(...) { return false; } return true; } //----------------------------------------------------------------------------------- diff --git a/contrib/epee/include/net/http_server_handlers_map2.h b/contrib/epee/include/net/http_server_handlers_map2.h index 429e3e1af..00a867d3e 100644 --- a/contrib/epee/include/net/http_server_handlers_map2.h +++ b/contrib/epee/include/net/http_server_handlers_map2.h @@ -122,6 +122,7 @@ if(!ps.load_from_json(query_info.m_body)) \ { \ boost::value_initialized<epee::json_rpc::error_response> rsp; \ + static_cast<epee::json_rpc::error_response&>(rsp).jsonrpc = "2.0"; \ static_cast<epee::json_rpc::error_response&>(rsp).error.code = -32700; \ static_cast<epee::json_rpc::error_response&>(rsp).error.message = "Parse error"; \ epee::serialization::store_t_to_json(static_cast<epee::json_rpc::error_response&>(rsp), response_info.m_body); \ diff --git a/contrib/epee/include/serialization/keyvalue_serialization.h b/contrib/epee/include/serialization/keyvalue_serialization.h index 5791e1998..fc5a21851 100644 --- a/contrib/epee/include/serialization/keyvalue_serialization.h +++ b/contrib/epee/include/serialization/keyvalue_serialization.h @@ -85,6 +85,14 @@ public: \ static_assert(std::is_pod<decltype(this_ref.varialble)>::value, "t_type must be a POD type."); \ KV_SERIALIZE_VAL_POD_AS_BLOB_FORCE_N(varialble, val_name) +#define KV_SERIALIZE_VAL_POD_AS_BLOB_OPT_N(varialble, val_name, default_value) \ + do { \ + static_assert(std::is_pod<decltype(this_ref.varialble)>::value, "t_type must be a POD type."); \ + bool ret = KV_SERIALIZE_VAL_POD_AS_BLOB_FORCE_N(varialble, val_name); \ + if (!ret) \ + epee::serialize_default(this_ref.varialble, default_value); \ + } while(0); + #define KV_SERIALIZE_CONTAINER_POD_AS_BLOB_N(varialble, val_name) \ epee::serialization::selector<is_store>::serialize_stl_container_pod_val_as_blob(this_ref.varialble, stg, hparent_section, val_name); @@ -92,6 +100,7 @@ public: \ #define KV_SERIALIZE(varialble) KV_SERIALIZE_N(varialble, #varialble) #define KV_SERIALIZE_VAL_POD_AS_BLOB(varialble) KV_SERIALIZE_VAL_POD_AS_BLOB_N(varialble, #varialble) +#define KV_SERIALIZE_VAL_POD_AS_BLOB_OPT(varialble, def) KV_SERIALIZE_VAL_POD_AS_BLOB_OPT_N(varialble, #varialble, def) #define KV_SERIALIZE_VAL_POD_AS_BLOB_FORCE(varialble) KV_SERIALIZE_VAL_POD_AS_BLOB_FORCE_N(varialble, #varialble) //skip is_pod compile time check #define KV_SERIALIZE_CONTAINER_POD_AS_BLOB(varialble) KV_SERIALIZE_CONTAINER_POD_AS_BLOB_N(varialble, #varialble) #define KV_SERIALIZE_OPT(variable,default_value) KV_SERIALIZE_OPT_N(variable, #variable, default_value) diff --git a/contrib/epee/include/string_tools.h b/contrib/epee/include/string_tools.h index 8d8603076..aba065cc7 100644 --- a/contrib/epee/include/string_tools.h +++ b/contrib/epee/include/string_tools.h @@ -46,6 +46,7 @@ #include <boost/algorithm/string/predicate.hpp> #include "hex.h" #include "memwipe.h" +#include "mlocker.h" #include "span.h" #include "warnings.h" @@ -358,6 +359,12 @@ POP_WARNINGS return hex_to_pod(hex_str, unwrap(s)); } //---------------------------------------------------------------------------- + template<class t_pod_type> + bool hex_to_pod(const std::string& hex_str, epee::mlocked<t_pod_type>& s) + { + return hex_to_pod(hex_str, unwrap(s)); + } + //---------------------------------------------------------------------------- bool validate_hex(uint64_t length, const std::string& str); //---------------------------------------------------------------------------- inline std::string get_extension(const std::string& str) 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/CMakeLists.txt b/contrib/epee/src/CMakeLists.txt index c4750cea0..0b5e7ae6c 100644 --- a/contrib/epee/src/CMakeLists.txt +++ b/contrib/epee/src/CMakeLists.txt @@ -27,7 +27,7 @@ # THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. add_library(epee STATIC hex.cpp http_auth.cpp mlog.cpp net_utils_base.cpp string_tools.cpp wipeable_string.cpp memwipe.c - connection_basic.cpp network_throttle.cpp network_throttle-detail.cpp) + connection_basic.cpp network_throttle.cpp network_throttle-detail.cpp mlocker.cpp) if (USE_READLINE AND GNU_READLINE_FOUND) add_library(epee_readline STATIC readline_buffer.cpp) endif() 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/memwipe.c b/contrib/epee/src/memwipe.c index e3a2f76c8..c2a26c392 100644 --- a/contrib/epee/src/memwipe.c +++ b/contrib/epee/src/memwipe.c @@ -50,7 +50,7 @@ void *memwipe(void *ptr, size_t n) { - if (memset_s(ptr, n, 0, n)) + if (n > 0 && memset_s(ptr, n, 0, n)) { #ifdef NDEBUG fprintf(stderr, "Error: memset_s failed\n"); @@ -67,7 +67,8 @@ void *memwipe(void *ptr, size_t n) void *memwipe(void *ptr, size_t n) { - explicit_bzero(ptr, n); + if (n > 0) + explicit_bzero(ptr, n); SCARECROW return ptr; } @@ -105,7 +106,8 @@ static void memory_cleanse(void *ptr, size_t len) void *memwipe(void *ptr, size_t n) { - memory_cleanse(ptr, n); + if (n > 0) + memory_cleanse(ptr, n); SCARECROW return ptr; } diff --git a/contrib/epee/src/mlocker.cpp b/contrib/epee/src/mlocker.cpp new file mode 100644 index 000000000..5573d591a --- /dev/null +++ b/contrib/epee/src/mlocker.cpp @@ -0,0 +1,182 @@ +// 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. + +#if defined __GNUC__ && !defined _WIN32 +#define HAVE_MLOCK 1 +#endif + +#include <unistd.h> +#if defined HAVE_MLOCK +#include <sys/mman.h> +#endif +#include "misc_log_ex.h" +#include "syncobj.h" +#include "mlocker.h" + +static size_t query_page_size() +{ +#if defined HAVE_MLOCK + long ret = sysconf(_SC_PAGESIZE); + if (ret <= 0) + { + MERROR("Failed to determine page size"); + return 0; + } + MINFO("Page size: " << ret); + return ret; +#else +#warning Missing query_page_size implementation +#endif + return 0; +} + +static void do_lock(void *ptr, size_t len) +{ +#if defined HAVE_MLOCK + int ret = mlock(ptr, len); + if (ret < 0) + MERROR("Error locking page at " << ptr << ": " << strerror(errno)); +#else +#warning Missing do_lock implementation +#endif +} + +static void do_unlock(void *ptr, size_t len) +{ +#if defined HAVE_MLOCK + int ret = munlock(ptr, len); + if (ret < 0) + MERROR("Error unlocking page at " << ptr << ": " << strerror(errno)); +#else +#warning Missing implementation of page size detection +#endif +} + +namespace epee +{ + size_t mlocker::page_size = 0; + size_t mlocker::num_locked_objects = 0; + + boost::mutex &mlocker::mutex() + { + static boost::mutex vmutex; + return vmutex; + } + std::map<size_t, unsigned int> &mlocker::map() + { + static std::map<size_t, unsigned int> vmap; + return vmap; + } + + size_t mlocker::get_page_size() + { + CRITICAL_REGION_LOCAL(mutex()); + if (page_size == 0) + page_size = query_page_size(); + return page_size; + } + + mlocker::mlocker(void *ptr, size_t len): ptr(ptr), len(len) + { + lock(ptr, len); + } + + mlocker::~mlocker() + { + unlock(ptr, len); + } + + void mlocker::lock(void *ptr, size_t len) + { + size_t page_size = get_page_size(); + if (page_size == 0) + return; + + CRITICAL_REGION_LOCAL(mutex()); + const size_t first = ((uintptr_t)ptr) / page_size; + const size_t last = (((uintptr_t)ptr) + len - 1) / page_size; + for (size_t page = first; page <= last; ++page) + lock_page(page); + ++num_locked_objects; + } + + void mlocker::unlock(void *ptr, size_t len) + { + size_t page_size = get_page_size(); + if (page_size == 0) + return; + CRITICAL_REGION_LOCAL(mutex()); + const size_t first = ((uintptr_t)ptr) / page_size; + const size_t last = (((uintptr_t)ptr) + len - 1) / page_size; + for (size_t page = first; page <= last; ++page) + unlock_page(page); + --num_locked_objects; + } + + size_t mlocker::get_num_locked_pages() + { + CRITICAL_REGION_LOCAL(mutex()); + return map().size(); + } + + size_t mlocker::get_num_locked_objects() + { + CRITICAL_REGION_LOCAL(mutex()); + return num_locked_objects; + } + + void mlocker::lock_page(size_t page) + { + std::pair<std::map<size_t, unsigned int>::iterator, bool> p = map().insert(std::make_pair(page, 1)); + if (p.second) + { + do_lock((void*)(page * page_size), page_size); + } + else + { + ++p.first->second; + } + } + + void mlocker::unlock_page(size_t page) + { + std::map<size_t, unsigned int>::iterator i = map().find(page); + if (i == map().end()) + { + MERROR("Attempt to unlock unlocked page at " << (void*)(page * page_size)); + } + else + { + if (!--i->second) + { + map().erase(i); + do_unlock((void*)(page * page_size), page_size); + } + } + } +} 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) |