aboutsummaryrefslogtreecommitdiffstats
path: root/buckets/request_buckets.c
blob: 912da8ad6df77491d54c6d09a80ee175d31f4652 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
/* Copyright 2002-2004 Justin Erenkrantz and Greg Stein
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <apr_pools.h>
#include <apr_strings.h>

#include "serf.h"
#include "serf_bucket_util.h"


typedef struct {
    const char *method;
    const char *uri;
    serf_bucket_t *headers;
    serf_bucket_t *body;
    apr_int64_t len;
} request_context_t;

#define LENGTH_UNKNOWN ((apr_int64_t)-1)


serf_bucket_t *serf_bucket_request_create(
    const char *method,
    const char *URI,
    serf_bucket_t *body,
    serf_bucket_alloc_t *allocator)
{
    request_context_t *ctx;

    ctx = serf_bucket_mem_alloc(allocator, sizeof(*ctx));
    ctx->method = method;
    ctx->uri = URI;
    ctx->headers = serf_bucket_headers_create(allocator);
    ctx->body = body;
    ctx->len = LENGTH_UNKNOWN;

    return serf_bucket_create(&serf_bucket_type_request, allocator, ctx);
}

void serf_bucket_request_set_CL(
    serf_bucket_t *bucket,
    apr_int64_t len)
{
    request_context_t *ctx = (request_context_t *)bucket->data;

    ctx->len = len;
}

serf_bucket_t *serf_bucket_request_get_headers(
    serf_bucket_t *bucket)
{
    return ((request_context_t *)bucket->data)->headers;
}

void serf_bucket_request_set_root(
    serf_bucket_t *bucket,
    const char *root_url)
{
    request_context_t *ctx = (request_context_t *)bucket->data;

    /* If uri is already absolute, don't change it. */
    if (ctx->uri[0] != '/')
        return;

    /* If uri is '/' replace it with root_url. */
    if (ctx->uri[1] == '\0')
        ctx->uri = root_url;
    else
        ctx->uri =
            apr_pstrcat(serf_bucket_allocator_get_pool(bucket->allocator),
                        root_url,
                        ctx->uri,
                        NULL);
}

static void serialize_data(serf_bucket_t *bucket)
{
    request_context_t *ctx = bucket->data;
    serf_bucket_t *new_bucket;
    const char *new_data;
    struct iovec iov[4];
    apr_size_t nbytes;

    /* Serialize the request-line and headers into one mother string,
     * and wrap a bucket around it.
     */
    iov[0].iov_base = (char*)ctx->method;
    iov[0].iov_len = strlen(ctx->method);
    iov[1].iov_base = " ";
    iov[1].iov_len = sizeof(" ") - 1;
    iov[2].iov_base = (char*)ctx->uri;
    iov[2].iov_len = strlen(ctx->uri);
    iov[3].iov_base = " HTTP/1.1\r\n";
    iov[3].iov_len = sizeof(" HTTP/1.1\r\n") - 1;

    /* Create a new bucket for this string with a flat string.  */
    new_data = serf_bstrcatv(bucket->allocator, iov, 4, &nbytes);
    new_bucket = serf_bucket_simple_own_create(new_data, nbytes,
                                               bucket->allocator);

    /* Build up the new bucket structure.
     *
     * Note that self needs to become an aggregate bucket so that a
     * pointer to self still represents the "right" data.
     */
    serf_bucket_aggregate_become(bucket);

    /* Insert the two buckets. */
    serf_bucket_aggregate_append(bucket, new_bucket);
    serf_bucket_aggregate_append(bucket, ctx->headers);

    /* If we know the length, then use C-L and the raw body. Otherwise,
       use chunked encoding for the request.  */
    if (ctx->len != LENGTH_UNKNOWN) {
        char buf[30];
        sprintf(buf, "%" APR_INT64_T_FMT, ctx->len);
        serf_bucket_headers_set(ctx->headers, "Content-Length", buf);
        if (ctx->body != NULL)
            serf_bucket_aggregate_append(bucket, ctx->body);
    }
    else if (ctx->body != NULL) {
        /* Morph the body bucket to a chunked encoding bucket for now. */
        serf_bucket_headers_setn(ctx->headers, "Transfer-Encoding", "chunked");
        ctx->body = serf_bucket_chunk_create(ctx->body, bucket->allocator);
        serf_bucket_aggregate_append(bucket, ctx->body);
    }

    /* Our private context is no longer needed, and is not referred to by
     * any existing bucket. Toss it.
     */
    serf_bucket_mem_free(bucket->allocator, ctx);
}

static apr_status_t serf_request_read(serf_bucket_t *bucket,
                                      apr_size_t requested,
                                      const char **data, apr_size_t *len)
{
    /* Seralize our private data into a new aggregate bucket. */
    serialize_data(bucket);

    /* Delegate to the "new" aggregate bucket to do the read. */
    return serf_bucket_read(bucket, requested, data, len);
}

static apr_status_t serf_request_readline(serf_bucket_t *bucket,
                                          int acceptable, int *found,
                                          const char **data, apr_size_t *len)
{
    /* Seralize our private data into a new aggregate bucket. */
    serialize_data(bucket);

    /* Delegate to the "new" aggregate bucket to do the readline. */
    return serf_bucket_readline(bucket, acceptable, found, data, len);
}

static apr_status_t serf_request_read_iovec(serf_bucket_t *bucket,
                                            apr_size_t requested,
                                            int vecs_size,
                                            struct iovec *vecs,
                                            int *vecs_used)
{
    /* Seralize our private data into a new aggregate bucket. */
    serialize_data(bucket);

    /* Delegate to the "new" aggregate bucket to do the read. */
    return serf_bucket_read_iovec(bucket, requested,
                                  vecs_size, vecs, vecs_used);
}

static apr_status_t serf_request_peek(serf_bucket_t *bucket,
                                      const char **data,
                                      apr_size_t *len)
{
    /* Seralize our private data into a new aggregate bucket. */
    serialize_data(bucket);

    /* Delegate to the "new" aggregate bucket to do the peek. */
    return serf_bucket_peek(bucket, data, len);
}

void serf_bucket_request_become(
    serf_bucket_t *bucket,
    const char *method,
    const char *uri,
    serf_bucket_t *body)
{
    request_context_t *ctx;

    ctx = serf_bucket_mem_alloc(bucket->allocator, sizeof(*ctx));
    ctx->method = method;
    ctx->uri = uri;
    ctx->headers = serf_bucket_headers_create(bucket->allocator);
    ctx->body = body;

    bucket->type = &serf_bucket_type_request;
    bucket->data = ctx;

    /* The allocator remains the same. */
}

const serf_bucket_type_t serf_bucket_type_request = {
    "REQUEST",
    serf_request_read,
    serf_request_readline,
    serf_request_read_iovec,
    serf_default_read_for_sendfile,
    serf_default_read_bucket,
    serf_request_peek,
    serf_default_destroy_and_data,
};