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/*
*
* 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);
}
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