common: add ssl_verify.c common code

Code adapter from RedPeer::ssl_verify_callback() and used by
spice-gtk.

Since v1:
 - fixed Makefile.am
 - added config.h include
 - autoconf alloca added in patch series
 - moved int escape inside for loop
 - added a failed case when missing assignment
 - replaced strlen () by -1
 - skip spaces after comma
 - c++ guards

I didn't use bool, because openSSL uses int, and it is more future
proof for error reporting.

1 files changed, 60 insertions, 0 deletions

diff --git a/common/ssl_verify.h b/common/ssl_verify.h
new file mode 100644
index 00000000..f0b97d85
--- /dev/null
+++ b/common/ssl_verify.h
@@ -0,0 +1,60 @@
+/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+   Copyright (C) 2011 Red Hat, Inc.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef SSL_VERIFY_H
+#define SSL_VERIFY_H
+
+#include <openssl/rsa.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#include <openssl/x509v3.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  SPICE_SSL_VERIFY_OP_NONE     = 0,
+  SPICE_SSL_VERIFY_OP_PUBKEY   = (1 << 0),
+  SPICE_SSL_VERIFY_OP_HOSTNAME = (1 << 1),
+  SPICE_SSL_VERIFY_OP_SUBJECT  = (1 << 2),
+} SPICE_SSL_VERIFY_OP;
+
+typedef struct {
+    SSL                 *ssl;
+    SPICE_SSL_VERIFY_OP verifyop;
+    int                 all_preverify_ok;
+    char                *hostname;
+    char                *pubkey;
+    size_t              pubkey_size;
+    char                *subject;
+    X509_NAME           *in_subject;
+} SpiceOpenSSLVerify;
+
+SpiceOpenSSLVerify* spice_openssl_verify_new(SSL *ssl, SPICE_SSL_VERIFY_OP verifyop,
+                                             const char *hostname,
+                                             const char *pubkey, size_t pubkey_size,
+                                             const char *subject);
+void spice_openssl_verify_free(SpiceOpenSSLVerify* verify);
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+#endif // SSL_VERIFY_H