1 /*
2 *
3 * Copyright 2015 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include <grpc/support/port_platform.h>
20
21 #include "src/core/lib/http/format_request.h"
22
23 #include <stdarg.h>
24 #include <stdio.h>
25 #include <string.h>
26
27 #include <vector>
28
29 #include "absl/strings/str_format.h"
30 #include "absl/strings/str_join.h"
31
32 #include <grpc/slice.h>
33 #include <grpc/support/alloc.h>
34 #include <grpc/support/string_util.h>
35 #include "src/core/lib/gpr/string.h"
36
fill_common_header(const grpc_httpcli_request * request,bool connection_close,std::vector<std::string> * buf)37 static void fill_common_header(const grpc_httpcli_request* request,
38 bool connection_close,
39 std::vector<std::string>* buf) {
40 buf->push_back(request->http.path);
41 buf->push_back(" HTTP/1.0\r\n");
42 /* just in case some crazy server really expects HTTP/1.1 */
43 buf->push_back("Host: ");
44 buf->push_back(request->host);
45 buf->push_back("\r\n");
46 if (connection_close) buf->push_back("Connection: close\r\n");
47 buf->push_back("User-Agent: " GRPC_HTTPCLI_USER_AGENT "\r\n");
48 /* user supplied headers */
49 for (size_t i = 0; i < request->http.hdr_count; i++) {
50 buf->push_back(request->http.hdrs[i].key);
51 buf->push_back(": ");
52 buf->push_back(request->http.hdrs[i].value);
53 buf->push_back("\r\n");
54 }
55 }
56
grpc_httpcli_format_get_request(const grpc_httpcli_request * request)57 grpc_slice grpc_httpcli_format_get_request(
58 const grpc_httpcli_request* request) {
59 std::vector<std::string> out;
60 out.push_back("GET ");
61 fill_common_header(request, true, &out);
62 out.push_back("\r\n");
63 std::string req = absl::StrJoin(out, "");
64 return grpc_slice_from_copied_buffer(req.data(), req.size());
65 }
66
grpc_httpcli_format_post_request(const grpc_httpcli_request * request,const char * body_bytes,size_t body_size)67 grpc_slice grpc_httpcli_format_post_request(const grpc_httpcli_request* request,
68 const char* body_bytes,
69 size_t body_size) {
70 std::vector<std::string> out;
71 out.push_back("POST ");
72 fill_common_header(request, true, &out);
73 if (body_bytes != nullptr) {
74 bool has_content_type = false;
75 for (size_t i = 0; i < request->http.hdr_count; i++) {
76 if (strcmp(request->http.hdrs[i].key, "Content-Type") == 0) {
77 has_content_type = true;
78 break;
79 }
80 }
81 if (!has_content_type) {
82 out.push_back("Content-Type: text/plain\r\n");
83 }
84 out.push_back(absl::StrFormat("Content-Length: %lu\r\n",
85 static_cast<unsigned long>(body_size)));
86 }
87 out.push_back("\r\n");
88 std::string req = absl::StrJoin(out, "");
89 if (body_bytes != nullptr) {
90 absl::StrAppend(&req, absl::string_view(body_bytes, body_size));
91 }
92 return grpc_slice_from_copied_buffer(req.data(), req.size());
93 }
94
grpc_httpcli_format_connect_request(const grpc_httpcli_request * request)95 grpc_slice grpc_httpcli_format_connect_request(
96 const grpc_httpcli_request* request) {
97 std::vector<std::string> out;
98 out.push_back("CONNECT ");
99 fill_common_header(request, false, &out);
100 out.push_back("\r\n");
101 std::string req = absl::StrJoin(out, "");
102 return grpc_slice_from_copied_buffer(req.data(), req.size());
103 }
104