Tom Lane wrote:
> Magnus Hagander <mag...@hagander.net> writes:
>> On 22 jun 2009, at 18.05, Tom Lane <t...@sss.pgh.pa.us> wrote:
>>> I'm also a bit concerned about wrapping a struct
>>> field inside such an #if, as that's likely to cause hard-to-debug
>>> problems if two compilations read libpq-int.h with different #define
>>> environments.
>
>> Since it's a pointer we could just declare it as void, no? Or even #if
>> between void and "real" pointer. Wouldn't that be safe?
>
> Yeah, on reflection I think it'd be safe to do
>
> #if (SSLEAY_VERSION_NUMBER >= 0x00907000L) && !defined(OPENSSL_NO_ENGINE)
> ENGINE *ptr;
> #else
> /* dummy field to keep struct the same if OpenSSL version changes */
> void *ptr;
> #endif
>
> (probably that #if should get wrapped up in an additional #define
> instead of being duplicated in several places...)
Attached is an updated patch that does both of these.
>> (we already have a similar issue with the whole #ifdef use_ssl, don't
>> we? But having one isn't an excuse to create another of course…)
>
> That's controlled by an entry in pg_config.h, though, and won't change
> if someone happens to update their openssl install and then recompile
> only parts of libpq.
True, agreed.
--
Magnus Hagander
Self: http://www.hagander.net/
Work: http://www.redpill-linpro.com/
*** a/src/interfaces/libpq/fe-secure.c
--- b/src/interfaces/libpq/fe-secure.c
***************
*** 31,36 ****
--- 31,37 ----
#include "libpq-fe.h"
#include "fe-auth.h"
#include "pqsignal.h"
+ #include "libpq-int.h"
#ifdef WIN32
#include "win32.h"
***************
*** 62,68 ****
#if (SSLEAY_VERSION_NUMBER >= 0x00907000L)
#include <openssl/conf.h>
#endif
! #if (SSLEAY_VERSION_NUMBER >= 0x00907000L) && !defined(OPENSSL_NO_ENGINE)
#include <openssl/engine.h>
#endif
--- 63,69 ----
#if (SSLEAY_VERSION_NUMBER >= 0x00907000L)
#include <openssl/conf.h>
#endif
! #ifdef USE_SSL_ENGINE
#include <openssl/engine.h>
#endif
***************
*** 661,667 **** client_cert_cb(SSL *ssl, X509 **x509, EVP_PKEY **pkey)
*/
if (conn->sslkey && strlen(conn->sslkey) > 0)
{
! #if (SSLEAY_VERSION_NUMBER >= 0x00907000L) && !defined(OPENSSL_NO_ENGINE)
if (strchr(conn->sslkey, ':')
#ifdef WIN32
&& conn->sslkey[1] != ':'
--- 662,668 ----
*/
if (conn->sslkey && strlen(conn->sslkey) > 0)
{
! #ifdef USE_SSL_ENGINE
if (strchr(conn->sslkey, ':')
#ifdef WIN32
&& conn->sslkey[1] != ':'
***************
*** 669,683 **** client_cert_cb(SSL *ssl, X509 **x509, EVP_PKEY **pkey)
)
{
/* Colon, but not in second character, treat as engine:key */
- ENGINE *engine_ptr;
char *engine_str = strdup(conn->sslkey);
char *engine_colon = strchr(engine_str, ':');
*engine_colon = '\0'; /* engine_str now has engine name */
engine_colon++; /* engine_colon now has key name */
! engine_ptr = ENGINE_by_id(engine_str);
! if (engine_ptr == NULL)
{
char *err = SSLerrmessage();
--- 670,683 ----
)
{
/* Colon, but not in second character, treat as engine:key */
char *engine_str = strdup(conn->sslkey);
char *engine_colon = strchr(engine_str, ':');
*engine_colon = '\0'; /* engine_str now has engine name */
engine_colon++; /* engine_colon now has key name */
! conn->engine = ENGINE_by_id(engine_str);
! if (conn->engine == NULL)
{
char *err = SSLerrmessage();
***************
*** 690,696 **** client_cert_cb(SSL *ssl, X509 **x509, EVP_PKEY **pkey)
return 0;
}
! *pkey = ENGINE_load_private_key(engine_ptr, engine_colon,
NULL, NULL);
if (*pkey == NULL)
{
--- 690,711 ----
return 0;
}
! if (ENGINE_init(conn->engine) == 0)
! {
! char *err = SSLerrmessage();
!
! printfPQExpBuffer(&conn->errorMessage,
! libpq_gettext("could not initialize SSL engine \"%s\": %s\n"),
! engine_str, err);
! SSLerrfree(err);
! ENGINE_free(conn->engine);
! conn->engine = NULL;
! free(engine_str);
! ERR_pop_to_mark();
! return 0;
! }
!
! *pkey = ENGINE_load_private_key(conn->engine, engine_colon,
NULL, NULL);
if (*pkey == NULL)
{
***************
*** 700,705 **** client_cert_cb(SSL *ssl, X509 **x509, EVP_PKEY **pkey)
--- 715,723 ----
libpq_gettext("could not read private SSL key \"%s\" from engine \"%s\": %s\n"),
engine_colon, engine_str, err);
SSLerrfree(err);
+ ENGINE_finish(conn->engine);
+ ENGINE_free(conn->engine);
+ conn->engine = NULL;
free(engine_str);
ERR_pop_to_mark();
return 0;
***************
*** 1217,1222 **** close_SSL(PGconn *conn)
--- 1235,1249 ----
X509_free(conn->peer);
conn->peer = NULL;
}
+
+ #ifdef USE_SSL_ENGINE
+ if (conn->engine)
+ {
+ ENGINE_finish(conn->engine);
+ ENGINE_free(conn->engine);
+ conn->engine = NULL;
+ }
+ #endif
}
/*
*** a/src/interfaces/libpq/libpq-int.h
--- b/src/interfaces/libpq/libpq-int.h
***************
*** 76,83 **** typedef struct
--- 76,88 ----
#ifdef USE_SSL
#include <openssl/ssl.h>
#include <openssl/err.h>
+
+ #if (SSLEAY_VERSION_NUMBER >= 0x00907000L) && !defined(OPENSSL_NO_ENGINE)
+ #define USE_SSL_ENGINE
#endif
+ #endif /* USE_SSL */
+
/*
* POSTGRES backend dependent Constants.
*/
***************
*** 383,389 **** struct pg_conn
--- 388,400 ----
X509 *peer; /* X509 cert of server */
char peer_dn[256 + 1]; /* peer distinguished name */
char peer_cn[SM_USER + 1]; /* peer common name */
+ #ifdef USE_SSL_ENGINE
+ ENGINE *engine; /* SSL engine, if any */
+ #else
+ void *engine; /* dummy field to keep struct the same
+ if OpenSSL version changes */
#endif
+ #endif /* USE_SSL */
#ifdef ENABLE_GSS
gss_ctx_id_t gctx; /* GSS context */
--
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