Move rng.{cpp,h} from core to rng/ topdir

Add a new class AutoSeeded_RNG that is a RandomNumberGenerator that wraps
up the logic formerly in RandomNumberGenerator::make_rng. make_rng in
fact now just returns a new AutoSeeded_RNG object.

AutoSeeded_RNG is a bit more convenient because

- No need to use auto_ptr
- No need to dereference (same syntax everywhere - it's an underestimated
advantage imo)

Also move the code from timer/timer_base to timer/

3 files changed, 6 insertions, 157 deletions

diff --git a/src/core/botan.h b/src/core/botan.h
index 70261398a..97b7dc1a3 100644
--- a/src/core/botan.h
+++ b/src/core/botan.h
@@ -9,3 +9,7 @@
 #include <botan/lookup.h>
 #include <botan/version.h>
 #include <botan/parsing.h>
+
+#if defined(BOTAN_HAS_AUTO_SEEDING_RNG)
+  #include <botan/auto_rng.h>
+#endif
diff --git a/src/core/info.txt b/src/core/info.txt
index 7528abba8..a4cdfbf2b 100644
--- a/src/core/info.txt
+++ b/src/core/info.txt
@@ -5,15 +5,12 @@ load_on auto
 define CORE_MODULE
 
 <requires>
-aes
-sha1
-sha2
-hmac
+rng
 filters
 hex
 bigint
 libstate
-timer_base
+timer
 </requires>
 
 <add>
@@ -31,8 +28,6 @@ exceptn.h
 mem_pool.cpp
 mem_pool.h
 mutex.h
-rng.cpp
-rng.h
 secmem.h
 symkey.cpp
 symkey.h
diff --git a/src/core/rng.cpp b/src/core/rng.cpp
deleted file mode 100644
index 05746f188..000000000
--- a/src/core/rng.cpp
+++ /dev/null
@@ -1,150 +0,0 @@
-/*************************************************
-* Random Number Generator Base Source File       *
-* (C) 1999-2008 Jack Lloyd                       *
-*************************************************/
-
-#include <botan/rng.h>
-#include <botan/util.h>
-#include <botan/parsing.h>
-#include <botan/timers.h>
-
-#if defined(BOTAN_HAS_RANDPOOL)
-  #include <botan/lookup.h>
-  #include <botan/randpool.h>
-
-#if defined(BOTAN_HAS_X931_RNG)
-  #include <botan/x931_rng.h>
-#endif
-
-#endif
-
-#if defined(BOTAN_HAS_TIMER_HARDWARE)
-  #include <botan/tm_hard.h>
-#elif defined(BOTAN_HAS_TIMER_POSIX)
-  #include <botan/tm_posix.h>
-#elif defined(BOTAN_HAS_TIMER_UNIX)
-  #include <botan/tm_unix.h>
-#elif defined(BOTAN_HAS_TIMER_WIN32)
-  #include <botan/tm_win32.h>
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_DEVICE)
-  #include <botan/es_dev.h>
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_EGD)
-  #include <botan/es_egd.h>
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_UNIX)
-  #include <botan/es_unix.h>
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_BEOS)
-  #include <botan/es_beos.h>
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_CAPI)
-  #include <botan/es_capi.h>
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_WIN32)
-  #include <botan/es_win32.h>
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_FTW)
-  #include <botan/es_ftw.h>
-#endif
-
-namespace Botan {
-
-/*************************************************
-* Default fast poll for EntropySources           *
-*************************************************/
-u32bit EntropySource::fast_poll(byte buf[], u32bit len)
-   {
-   return this->slow_poll(buf, len);
-   }
-
-/*************************************************
-* Get a single random byte                       *
-*************************************************/
-byte RandomNumberGenerator::next_byte()
-   {
-   byte out;
-   this->randomize(&out, 1);
-   return out;
-   }
-
-/*************************************************
-* Create and seed a new RNG object               *
-*************************************************/
-RandomNumberGenerator* RandomNumberGenerator::make_rng()
-   {
-#if defined(BOTAN_HAS_RANDPOOL)
-
-   /* Randpool is required for make_rng to work */
-   RandomNumberGenerator* rng = new Randpool(get_block_cipher("AES-256"),
-                                             get_mac("HMAC(SHA-256)"));
-
-
-   /* If X9.31 is available, wrap the Randpool algorithm in it */
-#if defined(BOTAN_HAS_X931_RNG)
-   rng = new ANSI_X931_RNG(get_block_cipher("AES-256"), rng);
-#endif
-
-#if defined(BOTAN_HAS_TIMER_HARDWARE)
-   rng->add_entropy_source(new Hardware_Timer);
-#elif defined(BOTAN_HAS_TIMER_POSIX)
-   rng->add_entropy_source(new POSIX_Timer);
-#elif defined(BOTAN_HAS_TIMER_UNIX)
-   rng->add_entropy_source(new Unix_Timer);
-#elif defined(BOTAN_HAS_TIMER_WIN32)
-   rng->add_entropy_source(new Win32_Timer);
-#else
-   rng->add_entropy_source(new Timer);
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_DEVICE)
-   rng->add_entropy_source(
-      new Device_EntropySource(
-         split_on("/dev/random:/dev/srandom:/dev/urandom", ':')
-         )
-      );
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_EGD)
-   rng->add_entropy_source(
-      new EGD_EntropySource(split_on("/var/run/egd-pool:/dev/egd-pool", ':'))
-      );
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_CAPI)
-   rng->add_entropy_source(new Win32_CAPI_EntropySource);
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_WIN32)
-   rng->add_entropy_source(new Win32_EntropySource);
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_UNIX)
-   rng->add_entropy_source(
-      new Unix_EntropySource(split_on("/bin:/sbin:/usr/bin:/usr/sbin", ':'))
-      );
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_BEOS)
-   rng->add_entropy_source(new BeOS_EntropySource);
-#endif
-
-#if defined(BOTAN_HAS_ENTROPY_SRC_FTW)
-   rng->add_entropy_source(new FTW_EntropySource("/proc"));
-#endif
-
-   return rng;
-#endif
-
-   throw Algorithm_Not_Found("RandomNumberGenerator::make_rng - no RNG found");
-   }
-
-}