1 files changed, 128 insertions, 0 deletions
diff --git a/src/core/httpcli/httpcli_security_context.c b/src/core/httpcli/httpcli_security_context.c
new file mode 100644
index 0000000000..c7b9b330f0
--- /dev/null
+++ b/src/core/httpcli/httpcli_security_context.c
@@ -0,0 +1,128 @@
+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/httpcli/httpcli_security_context.h"
+
+#include <string.h>
+
+#include "src/core/security/secure_transport_setup.h"
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string.h>
+#include "src/core/tsi/ssl_transport_security.h"
+
+typedef struct {
+  grpc_channel_security_context base;
+  tsi_ssl_handshaker_factory *handshaker_factory;
+  char *secure_peer_name;
+} grpc_httpcli_ssl_channel_security_context;
+
+static void httpcli_ssl_destroy(grpc_security_context *ctx) {
+  grpc_httpcli_ssl_channel_security_context *c =
+      (grpc_httpcli_ssl_channel_security_context *)ctx;
+  if (c->handshaker_factory != NULL) {
+    tsi_ssl_handshaker_factory_destroy(c->handshaker_factory);
+  }
+  if (c->secure_peer_name != NULL) gpr_free(c->secure_peer_name);
+  gpr_free(ctx);
+}
+
+static grpc_security_status httpcli_ssl_create_handshaker(
+    grpc_security_context *ctx, tsi_handshaker **handshaker) {
+  grpc_httpcli_ssl_channel_security_context *c =
+      (grpc_httpcli_ssl_channel_security_context *)ctx;
+  tsi_result result = TSI_OK;
+  if (c->handshaker_factory == NULL) return GRPC_SECURITY_ERROR;
+  result = tsi_ssl_handshaker_factory_create_handshaker(
+      c->handshaker_factory, c->secure_peer_name, handshaker);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "Handshaker creation failed with error %s.",
+            tsi_result_to_string(result));
+    return GRPC_SECURITY_ERROR;
+  }
+  return GRPC_SECURITY_OK;
+}
+
+static grpc_security_status httpcli_ssl_check_peer(
+    grpc_security_context *ctx, const tsi_peer *peer,
+    grpc_security_check_peer_cb cb, void *user_data) {
+  grpc_httpcli_ssl_channel_security_context *c =
+      (grpc_httpcli_ssl_channel_security_context *)ctx;
+
+  /* Check the peer name. */
+  if (c->secure_peer_name != NULL &&
+      !tsi_ssl_peer_matches_name(peer, c->secure_peer_name)) {
+    gpr_log(GPR_ERROR, "Peer name %s is not in peer certificate",
+            c->secure_peer_name);
+    return GRPC_SECURITY_ERROR;
+  }
+  return GRPC_SECURITY_OK;
+}
+
+static grpc_security_context_vtable httpcli_ssl_vtable = {
+    httpcli_ssl_destroy, httpcli_ssl_create_handshaker, httpcli_ssl_check_peer};
+
+grpc_security_status grpc_httpcli_ssl_channel_security_context_create(
+    const unsigned char *pem_root_certs, size_t pem_root_certs_size,
+    const char *secure_peer_name, grpc_channel_security_context **ctx) {
+  tsi_result result = TSI_OK;
+  grpc_httpcli_ssl_channel_security_context *c;
+
+  if (secure_peer_name != NULL && pem_root_certs == NULL) {
+    gpr_log(GPR_ERROR,
+            "Cannot assert a secure peer name without a trust root.");
+    return GRPC_SECURITY_ERROR;
+  }
+
+  c = gpr_malloc(sizeof(grpc_httpcli_ssl_channel_security_context));
+  memset(c, 0, sizeof(grpc_httpcli_ssl_channel_security_context));
+
+  gpr_ref_init(&c->base.base.refcount, 1);
+  c->base.base.is_client_side = 1;
+  c->base.base.vtable = &httpcli_ssl_vtable;
+  if (secure_peer_name != NULL) {
+    c->secure_peer_name = gpr_strdup(secure_peer_name);
+  }
+  result = tsi_create_ssl_client_handshaker_factory(
+      NULL, 0, NULL, 0, pem_root_certs, pem_root_certs_size, NULL, NULL, NULL,
+      0, &c->handshaker_factory);
+  if (result != TSI_OK) {
+    gpr_log(GPR_ERROR, "Handshaker factory creation failed with %s.",
+            tsi_result_to_string(result));
+    httpcli_ssl_destroy(&c->base.base);
+    *ctx = NULL;
+    return GRPC_SECURITY_ERROR;
+  }
+  *ctx = &c->base;
+  return GRPC_SECURITY_OK;
+}