Initial import.

src/config.h

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+/*
+ * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining 
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be 
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef CONFIG_H__
+#define CONFIG_H__
+
+/*
+ * This file contains compile-time flags that can override the
+ * autodetection performed in relevant files. Each flag is a macro; it
+ * deactivates the feature if defined to 0, activates it if defined to a
+ * non-zero integer (normally 1). If the macro is not defined, then
+ * autodetection applies.
+ */
+
+/*
+ * When BR_64 is enabled, 64-bit integer types are assumed to be
+ * efficient (i.e. the architecture has 64-bit registers and can
+ * do 64-bit operations as fast as 32-bit operations).
+ *
+#define BR_64   1
+ */
+
+/*
+ * When BR_SLOW_MUL is enabled, multiplications are assumed to be
+ * substantially slow with regards to other integer operations, thus
+ * making it worth to make more operations for a given task if it allows
+ * using less multiplications.
+ *
+#define BR_SLOW_MUL   1
+ */
+
+/*
+ * When BR_CT_MUL31 is enabled, multiplications of 31-bit values (used
+ * in the "i31" big integer implementation) use an alternate implementation
+ * which is slower and larger than the normal multiplication, but should
+ * ensure constant-time multiplications even on architectures where the
+ * multiplication opcode takes a variable number of cycles to complete.
+ *
+#define BR_CT_MUL31   1
+ */
+
+/*
+ * When BR_USE_URANDOM is enabled, the SSL engine will use /dev/urandom
+ * to automatically obtain quality randomness for seedings its internal
+ * PRNG.
+ *
+#define BR_USE_URANDOM   1
+ */
+
+/*
+ * When BR_USE_WIN32_RAND is enabled, the SSL engine will use the Win32
+ * (CryptoAPI) functions (CryptAcquireContext(), CryptGenRandom()...) to
+ * automatically obtain quality randomness for seedings its internal PRNG.
+ *
+ * Note: if both BR_USE_URANDOM and BR_USE_WIN32_RAND are defined, the
+ * former takes precedence.
+ *
+#define BR_USE_WIN32_RAND   1
+ */
+
+/*
+ * When BR_USE_UNIX_TIME is enabled, the X.509 validation engine obtains
+ * the current time from the OS by calling time(), and assuming that the
+ * returned value (a 'time_t') is an integer that counts time in seconds
+ * since the Unix Epoch (Jan 1st, 1970, 00:00 UTC).
+ *
+#define BR_USE_UNIX_TIME   1
+ */
+
+/*
+ * When BR_USE_WIN32_TIME is enabled, the X.509 validation engine obtains
+ * the current time from the OS by calling the Win32 function
+ * GetSystemTimeAsFileTime().
+ *
+ * Note: if both BR_USE_UNIX_TIME and BR_USE_WIN32_TIME are defined, the
+ * former takes precedence.
+ *
+#define BR_USE_WIN32_TIME   1
+ */
+
+#endif