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Diffstat (limited to 'src/zmq_utils.cpp')
-rw-r--r-- | src/zmq_utils.cpp | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/src/zmq_utils.cpp b/src/zmq_utils.cpp deleted file mode 100644 index 148ef95..0000000 --- a/src/zmq_utils.cpp +++ /dev/null @@ -1,200 +0,0 @@ -/* - Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file - - This file is part of 0MQ. - - 0MQ 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 - (at your option) any later version. - - 0MQ 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 Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -#include "platform.hpp" - -#include "clock.hpp" -#include "err.hpp" -#include "thread.hpp" -#include <assert.h> -#include "../include/zmq_utils.h" - -#if !defined ZMQ_HAVE_WINDOWS -#include <unistd.h> -#else -#include "windows.hpp" -#endif -#ifdef HAVE_LIBSODIUM -# include <sodium.h> -#endif - - -void zmq_sleep (int seconds_) -{ -#if defined ZMQ_HAVE_WINDOWS - Sleep (seconds_ * 1000); -#else - sleep (seconds_); -#endif -} - -void *zmq_stopwatch_start () -{ - uint64_t *watch = (uint64_t*) malloc (sizeof (uint64_t)); - alloc_assert (watch); - *watch = zmq::clock_t::now_us (); - return (void*) watch; -} - -unsigned long zmq_stopwatch_stop (void *watch_) -{ - uint64_t end = zmq::clock_t::now_us (); - uint64_t start = *(uint64_t*) watch_; - free (watch_); - return (unsigned long) (end - start); -} - -void *zmq_threadstart(zmq_thread_fn* func, void* arg) -{ - zmq::thread_t* thread = new zmq::thread_t; - thread->start(func, arg); - return thread; -} - -void zmq_threadclose(void* thread) -{ - zmq::thread_t* pThread = static_cast<zmq::thread_t*>(thread); - pThread->stop(); - delete pThread; -} - -// Z85 codec, taken from 0MQ RFC project, implements RFC32 Z85 encoding - -// Maps base 256 to base 85 -static char encoder [85 + 1] = { - "0123456789" "abcdefghij" "klmnopqrst" "uvwxyzABCD" - "EFGHIJKLMN" "OPQRSTUVWX" "YZ.-:+=^!/" "*?&<>()[]{" - "}@%$#" -}; - -// Maps base 85 to base 256 -// We chop off lower 32 and higher 128 ranges -static uint8_t decoder [96] = { - 0x00, 0x44, 0x00, 0x54, 0x53, 0x52, 0x48, 0x00, - 0x4B, 0x4C, 0x46, 0x41, 0x00, 0x3F, 0x3E, 0x45, - 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, - 0x08, 0x09, 0x40, 0x00, 0x49, 0x42, 0x4A, 0x47, - 0x51, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, - 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, - 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, - 0x3B, 0x3C, 0x3D, 0x4D, 0x00, 0x4E, 0x43, 0x00, - 0x00, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, - 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, - 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, - 0x21, 0x22, 0x23, 0x4F, 0x00, 0x50, 0x00, 0x00 -}; - -// -------------------------------------------------------------------------- -// Encode a binary frame as a string; destination string MUST be at least -// size * 5 / 4 bytes long plus 1 byte for the null terminator. Returns -// dest. Size must be a multiple of 4. -// Returns NULL and sets errno = EINVAL for invalid input. - -char *zmq_z85_encode (char *dest, uint8_t *data, size_t size) -{ - if (size % 4 != 0) { - errno = EINVAL; - return NULL; - } - unsigned int char_nbr = 0; - unsigned int byte_nbr = 0; - uint32_t value = 0; - while (byte_nbr < size) { - // Accumulate value in base 256 (binary) - value = value * 256 + data [byte_nbr++]; - if (byte_nbr % 4 == 0) { - // Output value in base 85 - unsigned int divisor = 85 * 85 * 85 * 85; - while (divisor) { - dest [char_nbr++] = encoder [value / divisor % 85]; - divisor /= 85; - } - value = 0; - } - } - assert (char_nbr == size * 5 / 4); - dest [char_nbr] = 0; - return dest; -} - - -// -------------------------------------------------------------------------- -// Decode an encoded string into a binary frame; dest must be at least -// strlen (string) * 4 / 5 bytes long. Returns dest. strlen (string) -// must be a multiple of 5. -// Returns NULL and sets errno = EINVAL for invalid input. - -uint8_t *zmq_z85_decode (uint8_t *dest, char *string) -{ - if (strlen (string) % 5 != 0) { - errno = EINVAL; - return NULL; - } - unsigned int byte_nbr = 0; - unsigned int char_nbr = 0; - unsigned int string_len = strlen (string); - uint32_t value = 0; - while (char_nbr < string_len) { - // Accumulate value in base 85 - value = value * 85 + decoder [(uint8_t) string [char_nbr++] - 32]; - if (char_nbr % 5 == 0) { - // Output value in base 256 - unsigned int divisor = 256 * 256 * 256; - while (divisor) { - dest [byte_nbr++] = value / divisor % 256; - divisor /= 256; - } - value = 0; - } - } - assert (byte_nbr == strlen (string) * 4 / 5); - return dest; -} - -// -------------------------------------------------------------------------- -// Generate a public/private keypair with libsodium. -// Generated keys will be 40 byte z85-encoded strings. -// Returns 0 on success, -1 on failure, setting errno. -// Sets errno = ENOTSUP in the absence of libsodium. - -int zmq_curve_keypair (char *z85_public_key, char *z85_secret_key) -{ -#ifdef HAVE_LIBSODIUM -# if crypto_box_PUBLICKEYBYTES != 32 \ - || crypto_box_SECRETKEYBYTES != 32 -# error "libsodium not built correctly" -# endif - - uint8_t public_key [32]; - uint8_t secret_key [32]; - - int rc = crypto_box_keypair (public_key, secret_key); - // Is there a sensible errno to set here? - if (rc) - return rc; - - zmq_z85_encode (z85_public_key, public_key, 32); - zmq_z85_encode (z85_secret_key, secret_key, 32); - - return 0; -#else // requires libsodium - errno = ENOTSUP; - return -1; -#endif -} |