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SSL improvements:

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o read global SSL configuration file
	o add GUC "ssl_ciphers" to control allowed ciphers
	o add libpq environment variable PGSSLKEY to control SSL hardware keys

Victor B. Wagner
This commit is contained in:
Bruce Momjian
2007-02-16 02:59:41 +00:00
parent 68046a20c7
commit c7b08050d9
9 changed files with 205 additions and 57 deletions
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15
src/backend/libpq/be-secure.c
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@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/libpq/be-secure.c,v 1.77 2007/02/07 00:52:35 petere Exp $
* $PostgreSQL: pgsql/src/backend/libpq/be-secure.c,v 1.78 2007/02/16 02:59:40 momjian Exp $
*
* Since the server static private key ($DataDir/server.key)
* will normally be stored unencrypted so that the database
@ -92,6 +92,10 @@
#ifdef USE_SSL
#include <openssl/ssl.h>
#include <openssl/dh.h>
#if SSLEAY_VERSION_NUMBER >= 0x0907000L
#include <openssl/conf.h>
#endif
#endif
#include "libpq/libpq.h"
@ -125,6 +129,10 @@ static const char *SSLerrmessage(void);
#define RENEGOTIATION_LIMIT (512 * 1024 * 1024)
static SSL_CTX *SSL_context = NULL;
/* GUC variable controlling SSL cipher list*/
extern char *SSLCipherSuites;
#endif
/* ------------------------------------------------------------ */
@ -719,6 +727,9 @@ initialize_SSL(void)
if (!SSL_context)
{
#if SSLEAY_VERSION_NUMBER >= 0x0907000L
OPENSSL_config(NULL);
#endif
SSL_library_init();
SSL_load_error_strings();
SSL_context = SSL_CTX_new(SSLv23_method());
@ -780,7 +791,7 @@ initialize_SSL(void)
SSL_CTX_set_options(SSL_context, SSL_OP_SINGLE_DH_USE | SSL_OP_NO_SSLv2);
/* setup the allowed cipher list */
if (SSL_CTX_set_cipher_list(SSL_context, "ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH") != 1)
if (SSL_CTX_set_cipher_list(SSL_context, SSLCipherSuites) != 1)
elog(FATAL, "could not set the cipher list (no valid ciphers available)");
/*