Nikolay Sivov : secur32: Simplify get_session_peer_certificate unixlib interface.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b255160168d0b8428fbe3f28a43a028bdc1c3aa8
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=b255160168d0b8428fbe3f28a...

Author: Nikolay Sivov <nsivov(a)codeweavers.com>
Date:   Fri May 27 10:35:42 2022 +0300

secur32: Simplify get_session_peer_certificate unixlib interface.

Use single buffer for returned certificate blobs, instead of an array
of CERT_BLOB that contains pointers.

Signed-off-by: Nikolay Sivov <nsivov(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/secur32/schannel.c        | 18 +++++++++++-------
 dlls/secur32/schannel_gnutls.c | 14 +++++++-------
 dlls/secur32/secur32_priv.h    |  2 +-
 3 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/dlls/secur32/schannel.c b/dlls/secur32/schannel.c
index 6ab5507becf..2e663872f71 100644
--- a/dlls/secur32/schannel.c
+++ b/dlls/secur32/schannel.c
@@ -1026,7 +1026,6 @@ static SECURITY_STATUS ensure_remote_cert(struct schan_context *ctx)
     HCERTSTORE store;
     PCCERT_CONTEXT cert = NULL;
     SECURITY_STATUS status;
-    CERT_BLOB *certs;
     ULONG count, size = 0;
     struct get_session_peer_certificate_params params = { ctx->transport.session, NULL, &size, &count };
 
@@ -1036,28 +1035,33 @@ static SECURITY_STATUS ensure_remote_cert(struct schan_context *ctx)
 
     status = GNUTLS_CALL( get_session_peer_certificate, ¶ms );
     if (status != SEC_E_BUFFER_TOO_SMALL) goto done;
-    if (!(certs = malloc( size )))
+    if (!(params.buffer = malloc( size )))
     {
         status = SEC_E_INSUFFICIENT_MEMORY;
         goto done;
     }
-    params.certs = certs;
     status = GNUTLS_CALL( get_session_peer_certificate, ¶ms );
     if (status == SEC_E_OK)
     {
         unsigned int i;
+        ULONG *sizes;
+        BYTE *blob;
+
+        sizes = (ULONG *)params.buffer;
+        blob = params.buffer + count * sizeof(*sizes);
+
         for (i = 0; i < count; i++)
         {
-            if (!CertAddEncodedCertificateToStore(store, X509_ASN_ENCODING, certs[i].pbData,
-                                                  certs[i].cbData, CERT_STORE_ADD_REPLACE_EXISTING,
-                                                  i ? NULL : &cert))
+            if (!CertAddEncodedCertificateToStore(store, X509_ASN_ENCODING, blob, sizes[i],
+                    CERT_STORE_ADD_REPLACE_EXISTING, i ? NULL : &cert))
             {
                 if (i) CertFreeCertificateContext(cert);
                 return GetLastError();
             }
+            blob += sizes[i];
         }
     }
-    free(certs);
+    free(params.buffer);
 done:
     ctx->cert = cert;
     CertCloseStore(store, 0);
diff --git a/dlls/secur32/schannel_gnutls.c b/dlls/secur32/schannel_gnutls.c
index 0145c59e0f0..7c6a0bc0cfc 100644
--- a/dlls/secur32/schannel_gnutls.c
+++ b/dlls/secur32/schannel_gnutls.c
@@ -792,28 +792,28 @@ static NTSTATUS schan_get_session_peer_certificate( void *args )
 {
     const struct get_session_peer_certificate_params *params = args;
     gnutls_session_t s = (gnutls_session_t)params->session;
-    CERT_BLOB *certs = params->certs;
     const gnutls_datum_t *datum;
     unsigned int i, size;
     BYTE *ptr;
     unsigned int count;
+    ULONG *sizes;
 
     if (!(datum = pgnutls_certificate_get_peers(s, &count))) return SEC_E_INTERNAL_ERROR;
 
-    size = count * sizeof(certs[0]);
+    size = count * sizeof(*sizes);
     for (i = 0; i < count; i++) size += datum[i].size;
 
-    if (!certs || *params->bufsize < size)
+    if (!params->buffer || *params->bufsize < size)
     {
         *params->bufsize = size;
         return SEC_E_BUFFER_TOO_SMALL;
     }
-    ptr = (BYTE *)&certs[count];
+    sizes = (ULONG *)params->buffer;
+    ptr = params->buffer + count * sizeof(*sizes);
     for (i = 0; i < count; i++)
     {
-        certs[i].cbData = datum[i].size;
-        certs[i].pbData = ptr;
-        memcpy(certs[i].pbData, datum[i].data, datum[i].size);
+        sizes[i] = datum[i].size;
+        memcpy(ptr, datum[i].data, datum[i].size);
         ptr += datum[i].size;
     }
 
diff --git a/dlls/secur32/secur32_priv.h b/dlls/secur32/secur32_priv.h
index be375618266..5c35e4244c8 100644
--- a/dlls/secur32/secur32_priv.h
+++ b/dlls/secur32/secur32_priv.h
@@ -145,7 +145,7 @@ struct get_connection_info_params
 struct get_session_peer_certificate_params
 {
     schan_session session;
-    CERT_BLOB *certs;
+    BYTE *buffer;          /* Starts with array of ULONG sizes, followed by contiguous data blob. */
     ULONG *bufsize;
     ULONG *retcount;
 };