GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2015 Varnish Software AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * HTTP1 Fetch Filters
 *
 * These filters are used for both req.body and beresp.body to handle
 * the HTTP/1 aspects (C-L/Chunked/EOF)
 *
 */

#include "config.h"

#include <inttypes.h>

#include "cache/cache_varnishd.h"
#include "cache/cache_filter.h"
#include "cache_http1.h"

#include "vct.h"
#include "vtcp.h"

/*--------------------------------------------------------------------
 * Read up to len bytes, returning pipelined data first.
 */

static ssize_t
v1f_read(const struct vfp_ctx *vc, struct http_conn *htc, void *d, ssize_t len)
{
        ssize_t l;
        unsigned char *p;
        ssize_t i = 0;

        CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
        CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
        assert(len > 0);
        l = 0;
        p = d;
        if (htc->pipeline_b) {
                l = htc->pipeline_e - htc->pipeline_b;
                assert(l > 0);
                l = vmin(l, len);
                memcpy(p, htc->pipeline_b, l);
                p += l;
                len -= l;
                htc->pipeline_b += l;
                if (htc->pipeline_b == htc->pipeline_e)
                        htc->pipeline_b = htc->pipeline_e = NULL;
        }
        if (len > 0) {
                i = read(*htc->rfd, p, len);
                if (i < 0) {
                        VTCP_Assert(i);
                        VSLbs(vc->wrk->vsl, SLT_FetchError,
                            TOSTRAND(VAS_errtxt(errno)));
                        return (i);
                }
                assert(i <= len);
                if (i == 0)
                        htc->doclose = SC_RESP_CLOSE;
        }
        return (i + l);
}


/*--------------------------------------------------------------------
 * read (CR)?LF at the end of a chunk
 */
static enum vfp_status
v1f_chunk_end(struct vfp_ctx *vc, struct http_conn *htc)
{
        char c;

        if (v1f_read(vc, htc, &c, 1) <= 0)
                return (VFP_Error(vc, "chunked read err"));
        if (c == '\r' && v1f_read(vc, htc, &c, 1) <= 0)
                return (VFP_Error(vc, "chunked read err"));
        if (c != '\n')
                return (VFP_Error(vc, "chunked tail no NL"));
        return (VFP_OK);
}


/*--------------------------------------------------------------------
 * Parse a chunk header and, for VFP_OK, return size in a pointer
 *
 * XXX: Reading one byte at a time is pretty pessimal.
 */

static enum vfp_status
v1f_chunked_hdr(struct vfp_ctx *vc, struct http_conn *htc, ssize_t *szp)
{
        char buf[20];           /* XXX: 20 is arbitrary */
        unsigned u;
        uintmax_t cll;
        ssize_t cl, lr;
        char *q;

        CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
        CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
        AN(szp);
        assert(*szp == -1);

        /* Skip leading whitespace */
        do {
                lr = v1f_read(vc, htc, buf, 1);
                if (lr <= 0)
                        return (VFP_Error(vc, "chunked read err"));
        } while (vct_isows(buf[0]));

        if (!vct_ishex(buf[0]))
                return (VFP_Error(vc, "chunked header non-hex"));

        /* Collect hex digits, skipping leading zeros */
        for (u = 1; u < sizeof buf; u++) {
                do {
                        lr = v1f_read(vc, htc, buf + u, 1);
                        if (lr <= 0)
                                return (VFP_Error(vc, "chunked read err"));
                } while (u == 1 && buf[0] == '0' && buf[u] == '0');
                if (!vct_ishex(buf[u]))
                        break;
        }

        if (u >= sizeof buf)
                return (VFP_Error(vc, "chunked header too long"));

        /* Skip trailing white space */
        while (vct_isows(buf[u])) {
                lr = v1f_read(vc, htc, buf + u, 1);
                if (lr <= 0)
                        return (VFP_Error(vc, "chunked read err"));
        }

        if (buf[u] == '\r' && v1f_read(vc, htc, buf + u, 1) <= 0)
                return (VFP_Error(vc, "chunked read err"));
        if (buf[u] != '\n')
                return (VFP_Error(vc, "chunked header no NL"));

        buf[u] = '\0';

        cll = strtoumax(buf, &q, 16);
        if (q == NULL || *q != '\0')
                return (VFP_Error(vc, "chunked header number syntax"));
        cl = (ssize_t)cll;
        if (cl < 0 || (uintmax_t)cl != cll)
                return (VFP_Error(vc, "bogusly large chunk size"));

        *szp = cl;
        return (VFP_OK);
}


/*--------------------------------------------------------------------
 * Read a chunked HTTP object.
 *
 */

static enum vfp_status v_matchproto_(vfp_pull_f)
v1f_chunked_pull(struct vfp_ctx *vc, struct vfp_entry *vfe, void *ptr,
    ssize_t *lp)
{
        static enum vfp_status vfps;
        struct http_conn *htc;
        ssize_t l, lr;

        CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
        CHECK_OBJ_NOTNULL(vfe, VFP_ENTRY_MAGIC);
        CAST_OBJ_NOTNULL(htc, vfe->priv1, HTTP_CONN_MAGIC);
        AN(ptr);
        AN(lp);

        l = *lp;
        *lp = 0;
        if (vfe->priv2 == -1) {
                vfps = v1f_chunked_hdr(vc, htc, &vfe->priv2);
                if (vfps != VFP_OK)
                        return (vfps);
        }
        if (vfe->priv2 > 0) {
                if (vfe->priv2 < l)
                        l = vfe->priv2;
                lr = v1f_read(vc, htc, ptr, l);
                if (lr <= 0)
                        return (VFP_Error(vc, "chunked insufficient bytes"));
                *lp = lr;
                vfe->priv2 -= lr;
                if (vfe->priv2 != 0)
                        return (VFP_OK);

                vfe->priv2 = -1;
                return (v1f_chunk_end(vc, htc));
        }
        AZ(vfe->priv2);
        vfps = v1f_chunk_end(vc, htc);
        return (vfps == VFP_OK ? VFP_END : vfps);
}

static const struct vfp v1f_chunked = {
        .name = "V1F_CHUNKED",
        .pull = v1f_chunked_pull,
};


/*--------------------------------------------------------------------*/

static enum vfp_status v_matchproto_(vfp_pull_f)
v1f_straight_pull(struct vfp_ctx *vc, struct vfp_entry *vfe, void *p,
    ssize_t *lp)
{
        ssize_t l, lr;
        struct http_conn *htc;

        CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
        CHECK_OBJ_NOTNULL(vfe, VFP_ENTRY_MAGIC);
        CAST_OBJ_NOTNULL(htc, vfe->priv1, HTTP_CONN_MAGIC);
        AN(p);
        AN(lp);

        l = *lp;
        *lp = 0;

        if (vfe->priv2 == 0) // XXX: Optimize Content-Len: 0 out earlier
                return (VFP_END);
        l = vmin(l, vfe->priv2);
        lr = v1f_read(vc, htc, p, l);
        if (lr <= 0)
                return (VFP_Error(vc, "straight insufficient bytes"));
        *lp = lr;
        vfe->priv2 -= lr;
        if (vfe->priv2 == 0)
                return (VFP_END);
        return (VFP_OK);
}

static const struct vfp v1f_straight = {
        .name = "V1F_STRAIGHT",
        .pull = v1f_straight_pull,
};

/*--------------------------------------------------------------------*/

static enum vfp_status v_matchproto_(vfp_pull_f)
v1f_eof_pull(struct vfp_ctx *vc, struct vfp_entry *vfe, void *p, ssize_t *lp)
{
        ssize_t l, lr;
        struct http_conn *htc;

        CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
        CHECK_OBJ_NOTNULL(vfe, VFP_ENTRY_MAGIC);
        CAST_OBJ_NOTNULL(htc, vfe->priv1, HTTP_CONN_MAGIC);
        AN(p);

        AN(lp);

        l = *lp;
        *lp = 0;
        lr = v1f_read(vc, htc, p, l);
        if (lr < 0)
                return (VFP_Error(vc, "eof socket fail"));
        if (lr == 0)
                return (VFP_END);
        *lp = lr;
        return (VFP_OK);
}

static const struct vfp v1f_eof = {
        .name = "V1F_EOF",
        .pull = v1f_eof_pull,
};

/*--------------------------------------------------------------------
 */

int
V1F_Setup_Fetch(struct vfp_ctx *vfc, struct http_conn *htc)
{
        struct vfp_entry *vfe;

        CHECK_OBJ_NOTNULL(vfc, VFP_CTX_MAGIC);
        CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);

        if (htc->body_status == BS_EOF) {
                assert(htc->content_length == -1);
                vfe = VFP_Push(vfc, &v1f_eof);
                if (vfe == NULL)
                        return (ENOSPC);
                vfe->priv2 = 0;
        } else if (htc->body_status == BS_LENGTH) {
                assert(htc->content_length > 0);
                vfe = VFP_Push(vfc, &v1f_straight);
                if (vfe == NULL)
                        return (ENOSPC);
                vfe->priv2 = htc->content_length;
        } else if (htc->body_status == BS_CHUNKED) {
                assert(htc->content_length == -1);
                vfe = VFP_Push(vfc, &v1f_chunked);
                if (vfe == NULL)
                        return (ENOSPC);
                vfe->priv2 = -1;
        } else {
                WRONG("Wrong body_status");
        }
        vfe->priv1 = htc;
        return (0);
}

		varnish-cache/bin/varnishd/http1/cache_http1_vfp.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2015 Varnish Software AS
3		* All rights reserved.
4		*
5		* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
6		*
7		* SPDX-License-Identifier: BSD-2-Clause
8		*
9		* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		* 2. Redistributions in binary form must reproduce the above copyright
15		* notice, this list of conditions and the following disclaimer in the
16		* documentation and/or other materials provided with the distribution.
17		*
18		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28		* SUCH DAMAGE.
29		*
30		* HTTP1 Fetch Filters
31		*
32		* These filters are used for both req.body and beresp.body to handle
33		* the HTTP/1 aspects (C-L/Chunked/EOF)
34		*
35		*/
36
37		#include "config.h"
38
39		#include <inttypes.h>
40
41		#include "cache/cache_varnishd.h"
42		#include "cache/cache_filter.h"
43		#include "cache_http1.h"
44
45		#include "vct.h"
46		#include "vtcp.h"
47
48		/*--------------------------------------------------------------------
49		* Read up to len bytes, returning pipelined data first.
50		*/
51
52		static ssize_t
53	58441	v1f_read(const struct vfp_ctx vc, struct http_conn htc, void *d, ssize_t len)
54		{
55		ssize_t l;
56		unsigned char *p;
57	58441	ssize_t i = 0;
58
59	58441	CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
60	58441	CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
61	58441	assert(len > 0);
62	58441	l = 0;
63	58441	p = d;
64	58441	if (htc->pipeline_b) {
65	2957	l = htc->pipeline_e - htc->pipeline_b;
66	2957	assert(l > 0);
67	2957	l = vmin(l, len);
68	2957	memcpy(p, htc->pipeline_b, l);
69	2957	p += l;
70	2957	len -= l;
71	2957	htc->pipeline_b += l;
72	2957	if (htc->pipeline_b == htc->pipeline_e)
73	1046	htc->pipeline_b = htc->pipeline_e = NULL;
74	2957	}
75	58441	if (len > 0) {
76	55556	i = read(*htc->rfd, p, len);
77	55556	if (i < 0) {
78	9	VTCP_Assert(i);
79	18	VSLbs(vc->wrk->vsl, SLT_FetchError,
80	9	TOSTRAND(VAS_errtxt(errno)));
81	9	return (i);
82		}
83	55547	assert(i <= len);
84	55547	if (i == 0)
85	59	htc->doclose = SC_RESP_CLOSE;
86	55547	}
87	58432	return (i + l);
88	58441	}
89
90
91		/*--------------------------------------------------------------------
92		* read (CR)?LF at the end of a chunk
93		*/
94		static enum vfp_status
95	380	v1f_chunk_end(struct vfp_ctx vc, struct http_conn htc)
96		{
97		char c;
98
99	380	if (v1f_read(vc, htc, &c, 1) <= 0)
100	0	return (VFP_Error(vc, "chunked read err"));
101	380	if (c == '\r' && v1f_read(vc, htc, &c, 1) <= 0)
102	0	return (VFP_Error(vc, "chunked read err"));
103	380	if (c != '\n')
104	2	return (VFP_Error(vc, "chunked tail no NL"));
105	378	return (VFP_OK);
106	380	}
107
108
109		/*--------------------------------------------------------------------
110		* Parse a chunk header and, for VFP_OK, return size in a pointer
111		*
112		* XXX: Reading one byte at a time is pretty pessimal.
113		*/
114
115		static enum vfp_status
116	391	v1f_chunked_hdr(struct vfp_ctx vc, struct http_conn htc, ssize_t *szp)
117		{
118		char buf[20]; /* XXX: 20 is arbitrary */
119		unsigned u;
120		uintmax_t cll;
121		ssize_t cl, lr;
122		char *q;
123
124	391	CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
125	391	CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
126	391	AN(szp);
127	391	assert(*szp == -1);
128
129		/* Skip leading whitespace */
130	391	do {
131	391	lr = v1f_read(vc, htc, buf, 1);
132	391	if (lr <= 0)
133	5	return (VFP_Error(vc, "chunked read err"));
134	386	} while (vct_isows(buf[0]));
135
136	386	if (!vct_ishex(buf[0]))
137	2	return (VFP_Error(vc, "chunked header non-hex"));
138
139		/* Collect hex digits, skipping leading zeros */
140	692	for (u = 1; u < sizeof buf; u++) {
141	691	do {
142	1361	lr = v1f_read(vc, htc, buf + u, 1);
143	1361	if (lr <= 0)
144	0	return (VFP_Error(vc, "chunked read err"));
145	1361	} while (u == 1 && buf[0] == '0' && buf[u] == '0');
146	691	if (!vct_ishex(buf[u]))
147	383	break;
148	308	}
149
150	384	if (u >= sizeof buf)
151	1	return (VFP_Error(vc, "chunked header too long"));
152
153		/* Skip trailing white space */
154	383	while (vct_isows(buf[u])) {
155	0	lr = v1f_read(vc, htc, buf + u, 1);
156	0	if (lr <= 0)
157	0	return (VFP_Error(vc, "chunked read err"));
158		}
159
160	383	if (buf[u] == '\r' && v1f_read(vc, htc, buf + u, 1) <= 0)
161	0	return (VFP_Error(vc, "chunked read err"));
162	383	if (buf[u] != '\n')
163	0	return (VFP_Error(vc, "chunked header no NL"));
164
165	383	buf[u] = '\0';
166
167	383	cll = strtoumax(buf, &q, 16);
168	383	if (q == NULL \|\| *q != '\0')
169	0	return (VFP_Error(vc, "chunked header number syntax"));
170	383	cl = (ssize_t)cll;
171	383	if (cl < 0 \|\| (uintmax_t)cl != cll)
172	1	return (VFP_Error(vc, "bogusly large chunk size"));
173
174	382	*szp = cl;
175	382	return (VFP_OK);
176	391	}
177
178
179		/*--------------------------------------------------------------------
180		* Read a chunked HTTP object.
181		*
182		*/
183
184		static enum vfp_status v_matchproto_(vfp_pull_f)
185	53237	v1f_chunked_pull(struct vfp_ctx vc, struct vfp_entry vfe, void *ptr,
186		ssize_t *lp)
187		{
188		static enum vfp_status vfps;
189		struct http_conn *htc;
190		ssize_t l, lr;
191
192	53237	CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
193	53237	CHECK_OBJ_NOTNULL(vfe, VFP_ENTRY_MAGIC);
194	53237	CAST_OBJ_NOTNULL(htc, vfe->priv1, HTTP_CONN_MAGIC);
195	53237	AN(ptr);
196	53237	AN(lp);
197
198	53237	l = *lp;
199	53237	*lp = 0;
200	53237	if (vfe->priv2 == -1) {
201	391	vfps = v1f_chunked_hdr(vc, htc, &vfe->priv2);
202	391	if (vfps != VFP_OK)
203	9	return (vfps);
204	382	}
205	53228	if (vfe->priv2 > 0) {
206	53109	if (vfe->priv2 < l)
207	239	l = vfe->priv2;
208	53109	lr = v1f_read(vc, htc, ptr, l);
209	53109	if (lr <= 0)
210	1	return (VFP_Error(vc, "chunked insufficient bytes"));
211	53108	*lp = lr;
212	53108	vfe->priv2 -= lr;
213	53108	if (vfe->priv2 != 0)
214	52847	return (VFP_OK);
215
216	261	vfe->priv2 = -1;
217	261	return (v1f_chunk_end(vc, htc));
218		}
219	119	AZ(vfe->priv2);
220	119	vfps = v1f_chunk_end(vc, htc);
221	119	return (vfps == VFP_OK ? VFP_END : vfps);
222	53237	}
223
224		static const struct vfp v1f_chunked = {
225		.name = "V1F_CHUNKED",
226		.pull = v1f_chunked_pull,
227		};
228
229
230		/--------------------------------------------------------------------/
231
232		static enum vfp_status v_matchproto_(vfp_pull_f)
233	2413	v1f_straight_pull(struct vfp_ctx vc, struct vfp_entry vfe, void *p,
234		ssize_t *lp)
235		{
236		ssize_t l, lr;
237		struct http_conn *htc;
238
239	2413	CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
240	2413	CHECK_OBJ_NOTNULL(vfe, VFP_ENTRY_MAGIC);
241	2413	CAST_OBJ_NOTNULL(htc, vfe->priv1, HTTP_CONN_MAGIC);
242	2413	AN(p);
243	2413	AN(lp);
244
245	2413	l = *lp;
246	2413	*lp = 0;
247
248	2413	if (vfe->priv2 == 0) // XXX: Optimize Content-Len: 0 out earlier
249	0	return (VFP_END);
250	2413	l = vmin(l, vfe->priv2);
251	2413	lr = v1f_read(vc, htc, p, l);
252	2413	if (lr <= 0)
253	23	return (VFP_Error(vc, "straight insufficient bytes"));
254	2390	*lp = lr;
255	2390	vfe->priv2 -= lr;
256	2390	if (vfe->priv2 == 0)
257	981	return (VFP_END);
258	1409	return (VFP_OK);
259	2413	}
260
261		static const struct vfp v1f_straight = {
262		.name = "V1F_STRAIGHT",
263		.pull = v1f_straight_pull,
264		};
265
266		/--------------------------------------------------------------------/
267
268		static enum vfp_status v_matchproto_(vfp_pull_f)
269	69	v1f_eof_pull(struct vfp_ctx vc, struct vfp_entry vfe, void p, ssize_t lp)
270		{
271		ssize_t l, lr;
272		struct http_conn *htc;
273
274	69	CHECK_OBJ_NOTNULL(vc, VFP_CTX_MAGIC);
275	69	CHECK_OBJ_NOTNULL(vfe, VFP_ENTRY_MAGIC);
276	69	CAST_OBJ_NOTNULL(htc, vfe->priv1, HTTP_CONN_MAGIC);
277	69	AN(p);
278
279	69	AN(lp);
280
281	69	l = *lp;
282	69	*lp = 0;
283	69	lr = v1f_read(vc, htc, p, l);
284	69	if (lr < 0)
285	3	return (VFP_Error(vc, "eof socket fail"));
286	66	if (lr == 0)
287	20	return (VFP_END);
288	46	*lp = lr;
289	46	return (VFP_OK);
290	69	}
291
292		static const struct vfp v1f_eof = {
293		.name = "V1F_EOF",
294		.pull = v1f_eof_pull,
295		};
296
297		/*--------------------------------------------------------------------
298		*/
299
300		int
301	1293	V1F_Setup_Fetch(struct vfp_ctx vfc, struct http_conn htc)
302		{
303		struct vfp_entry *vfe;
304
305	1293	CHECK_OBJ_NOTNULL(vfc, VFP_CTX_MAGIC);
306	1293	CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
307
308	1293	if (htc->body_status == BS_EOF) {
309	23	assert(htc->content_length == -1);
310	23	vfe = VFP_Push(vfc, &v1f_eof);
311	23	if (vfe == NULL)
312	0	return (ENOSPC);
313	23	vfe->priv2 = 0;
314	1293	} else if (htc->body_status == BS_LENGTH) {
315	1113	assert(htc->content_length > 0);
316	1113	vfe = VFP_Push(vfc, &v1f_straight);
317	1113	if (vfe == NULL)
318	0	return (ENOSPC);
319	1113	vfe->priv2 = htc->content_length;
320	1270	} else if (htc->body_status == BS_CHUNKED) {
321	157	assert(htc->content_length == -1);
322	157	vfe = VFP_Push(vfc, &v1f_chunked);
323	157	if (vfe == NULL)
324	16	return (ENOSPC);
325	141	vfe->priv2 = -1;
326	141	} else {
327	0	WRONG("Wrong body_status");
328		}
329	1277	vfe->priv1 = htc;
330	1277	return (0);
331	1293	}