From eb6fecd543a67412b06971162b37611631f1e0fc Mon Sep 17 00:00:00 2001 From: OBATA Akio Date: Sun, 18 Aug 2019 18:28:04 +0900 Subject: [PATCH] Change to use arc4random_buf(3) if available Signed-off-by: OBATA Akio (cherry picked from commit 027c45db6f63a04eb31eac481f9264ab9760dce1) --- config.h.cmake | 1 + tdm/ConfigureChecks.cmake | 1 + tdm/backend/genauth.c | 5 ++++- 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/config.h.cmake b/config.h.cmake index 17378621c..08e503c35 100644 --- a/config.h.cmake +++ b/config.h.cmake @@ -185,6 +185,7 @@ #cmakedefine HAVE_ARC4RANDOM 1 #cmakedefine DEV_RANDOM "@DEV_RANDOM@" +#cmakedefine HAVE_ARC4RANDOM_BUF 1 #cmakedefine USE_PAM 1 #cmakedefine TDM_PAM_SERVICE "@TDM_PAM_SERVICE@" diff --git a/tdm/ConfigureChecks.cmake b/tdm/ConfigureChecks.cmake index cb333aa61..cb5615243 100644 --- a/tdm/ConfigureChecks.cmake +++ b/tdm/ConfigureChecks.cmake @@ -98,6 +98,7 @@ if( NOT HAVE_ARC4RANDOM ) set( DEV_RANDOM "/dev/random" CACHE INTERNAL "" FORCE ) endif( ) endif (NOT HAVE_ARC4RANDOM) +check_function_exists( arc4random_buf HAVE_ARC4RANDOM_BUF ) # Xau pkg_search_module( XAU xau ) diff --git a/tdm/backend/genauth.c b/tdm/backend/genauth.c index 6da95cce0..1bde2fc85 100644 --- a/tdm/backend/genauth.c +++ b/tdm/backend/genauth.c @@ -432,7 +432,10 @@ AddPreGetEntropy( void ) int GenerateAuthData( char *auth, int len ) { -#ifdef HAVE_ARC4RANDOM +#ifdef HAVE_ARC4RANDOM_BUF + arc4random_buf((void*)auth, (size_t)len); + return 1; +#elif defined(HAVE_ARC4RANDOM) int i; unsigned *rnd = (unsigned *)auth; if (sizeof(unsigned) == 4)