1 files changed, 121 insertions, 0 deletions
diff --git a/src/core/httpcli/format_request.c b/src/core/httpcli/format_request.c
new file mode 100644
index 0000000000..7a44f1266f
--- /dev/null
+++ b/src/core/httpcli/format_request.c
@@ -0,0 +1,121 @@
+/*
+ *
+ * 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/format_request.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/slice.h>
+#include <grpc/support/useful.h>
+
+typedef struct {
+  size_t length;
+  size_t capacity;
+  char *data;
+} sbuf;
+
+static void sbuf_append(sbuf *buf, const char *bytes, size_t len) {
+  if (buf->length + len > buf->capacity) {
+    buf->capacity = GPR_MAX(buf->length + len, buf->capacity * 3 / 2);
+    buf->data = gpr_realloc(buf->data, buf->capacity);
+  }
+  memcpy(buf->data + buf->length, bytes, len);
+  buf->length += len;
+}
+
+static void sbprintf(sbuf *buf, const char *fmt, ...) {
+  char temp[GRPC_HTTPCLI_MAX_HEADER_LENGTH];
+  size_t len;
+  va_list args;
+
+  va_start(args, fmt);
+  len = vsprintf(temp, fmt, args);
+  va_end(args);
+
+  sbuf_append(buf, temp, len);
+}
+
+static void fill_common_header(const grpc_httpcli_request *request, sbuf *buf) {
+  size_t i;
+  sbprintf(buf, "%s HTTP/1.0\r\n", request->path);
+  /* just in case some crazy server really expects HTTP/1.1 */
+  sbprintf(buf, "Host: %s\r\n", request->host);
+  sbprintf(buf, "Connection: close\r\n");
+  sbprintf(buf, "User-Agent: %s\r\n", GRPC_HTTPCLI_USER_AGENT);
+  /* user supplied headers */
+  for (i = 0; i < request->hdr_count; i++) {
+    sbprintf(buf, "%s: %s\r\n", request->hdrs[i].key, request->hdrs[i].value);
+  }
+}
+
+gpr_slice grpc_httpcli_format_get_request(const grpc_httpcli_request *request) {
+  sbuf out = {0, 0, NULL};
+
+  sbprintf(&out, "GET ");
+  fill_common_header(request, &out);
+  sbprintf(&out, "\r\n");
+
+  return gpr_slice_new(out.data, out.length, gpr_free);
+}
+
+gpr_slice grpc_httpcli_format_post_request(const grpc_httpcli_request *request,
+                                           const char *body_bytes,
+                                           size_t body_size) {
+  sbuf out = {0, 0, NULL};
+  size_t i;
+
+  sbprintf(&out, "POST ");
+  fill_common_header(request, &out);
+  if (body_bytes) {
+    gpr_uint8 has_content_type = 0;
+    for (i = 0; i < request->hdr_count; i++) {
+      if (strcmp(request->hdrs[i].key, "Content-Type") == 0) {
+        has_content_type = 1;
+        break;
+      }
+    }
+    if (!has_content_type) {
+      sbprintf(&out, "Content-Type: text/plain\r\n");
+    }
+    sbprintf(&out, "Content-Length: %lu\r\n", (unsigned long)body_size);
+  }
+  sbprintf(&out, "\r\n");
+  if (body_bytes) {
+    sbuf_append(&out, body_bytes, body_size);
+  }
+
+  return gpr_slice_new(out.data, out.length, gpr_free);
+}