libcurl extracted to the separate lib

git-svn-id: http://svn.miranda-ng.org/main/trunk@14683 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

1 files changed, 182 insertions, 0 deletions

diff --git a/libs/libcurl/src/http2.c b/libs/libcurl/src/http2.c
new file mode 100644
index 0000000000..b876436e1a
--- /dev/null
+++ b/libs/libcurl/src/http2.c
@@ -0,0 +1,182 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#ifdef USE_NGHTTP2
+#define _MPRINTF_REPLACE
+#include <curl/mprintf.h>
+
+#include <nghttp2/nghttp2.h>
+#include "urldata.h"
+#include "http2.h"
+#include "http.h"
+#include "sendf.h"
+#include "curl_base64.h"
+#include "curl_memory.h"
+
+/* include memdebug.h last */
+#include "memdebug.h"
+
+/*
+ * Store nghttp2 version info in this buffer, Prefix with a space.  Return
+ * total length written.
+ */
+int Curl_http2_ver(char *p, size_t len)
+{
+  nghttp2_info *h2 = nghttp2_version(0);
+  return snprintf(p, len, " nghttp2/%s", h2->version_str);
+}
+
+/*
+ * The implementation of nghttp2_send_callback type. Here we write |data| with
+ * size |length| to the network and return the number of bytes actually
+ * written. See the documentation of nghttp2_send_callback for the details.
+ */
+static ssize_t send_callback(nghttp2_session *h2,
+                             const uint8_t *data, size_t length, int flags,
+                             void *userp)
+{
+  struct connectdata *conn = (struct connectdata *)userp;
+  ssize_t written;
+  CURLcode rc =
+    Curl_write(conn, conn->sock[0], data, length, &written);
+  (void)h2;
+  (void)flags;
+
+  if(rc) {
+    failf(conn->data, "Failed sending HTTP2 data");
+    return NGHTTP2_ERR_CALLBACK_FAILURE;
+  }
+  else if(!written)
+    return NGHTTP2_ERR_WOULDBLOCK;
+
+  return written;
+}
+
+/*
+ * The implementation of nghttp2_recv_callback type. Here we read data from
+ * the network and write them in |buf|. The capacity of |buf| is |length|
+ * bytes. Returns the number of bytes stored in |buf|. See the documentation
+ * of nghttp2_recv_callback for the details.
+ */
+static ssize_t recv_callback(nghttp2_session *h2,
+                             uint8_t *buf, size_t length, int flags,
+                             void *userp)
+{
+  struct connectdata *conn = (struct connectdata *)userp;
+  ssize_t nread;
+  CURLcode rc = Curl_read(conn, conn->sock[0], (char *)buf, length, &nread);
+  (void)h2;
+  (void)flags;
+
+  if(rc) {
+    failf(conn->data, "Failed recving HTTP2 data");
+    return NGHTTP2_ERR_CALLBACK_FAILURE;
+  }
+  if(!nread)
+    return NGHTTP2_ERR_WOULDBLOCK;
+
+  return nread;
+}
+
+/*
+ * This is all callbacks nghttp2 calls
+ */
+static const nghttp2_session_callbacks callbacks = {
+  send_callback,
+  recv_callback,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL,
+  NULL
+};
+
+/*
+ * The HTTP2 settings we send in the Upgrade request
+ */
+static nghttp2_settings_entry settings[] = {
+  { NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, 100 },
+  { NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, NGHTTP2_INITIAL_WINDOW_SIZE },
+};
+
+/*
+ * Append headers to ask for a HTTP1.1 to HTTP2 upgrade.
+ */
+CURLcode Curl_http2_request(Curl_send_buffer *req,
+                            struct connectdata *conn)
+{
+  uint8_t binsettings[80];
+  CURLcode result;
+  ssize_t binlen;
+  char *base64;
+  size_t blen;
+
+  if(!conn->proto.httpc.h2) {
+    /* The nghttp2 session is not yet setup, do it */
+    int rc = nghttp2_session_client_new(&conn->proto.httpc.h2,
+                                        &callbacks, &conn);
+    if(rc) {
+      failf(conn->data, "Couldn't initialize nghttp2!");
+      return CURLE_OUT_OF_MEMORY; /* most likely at least */
+    }
+  }
+
+  /* As long as we have a fixed set of settings, we don't have to dynamically
+   * figure out the base64 strings since it'll always be the same. However,
+   * the settings will likely not be fixed every time in the future.
+   */
+
+  /* this returns number of bytes it wrote */
+  binlen = nghttp2_pack_settings_payload(binsettings,
+                                         sizeof(binsettings),
+                                         settings,
+                                         sizeof(settings)/sizeof(settings[0]));
+  if(!binlen) {
+    failf(conn->data, "nghttp2 unexpectedly failed on pack_settings_payload");
+    return CURLE_FAILED_INIT;
+  }
+
+  result = Curl_base64_encode(conn->data, (const char *)binsettings, binlen,
+                              &base64, &blen);
+  if(result)
+    return result;
+
+  result = Curl_add_bufferf(req,
+                            "Connection: Upgrade, HTTP2-Settings\r\n"
+                            "Upgrade: %s\r\n"
+                            "HTTP2-Settings: %s\r\n",
+                            NGHTTP2_PROTO_VERSION_ID, base64);
+  free(base64);
+
+  return result;
+}
+
+#endif