GCOV - Varnish Cache


/*-
 * Copyright (c) 2008-2016 Varnish Software AS
 * All rights reserved.
 *
 * Author: Guillaume Quintard <guillaume.quintard@gmail.com>
 *
 * 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.
 */

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "vdef.h"

#include "vas.h"
#include "vqueue.h"

#include "hpack.h"
#include "vtc_h2_priv.h"

/* TODO: fix that crazy workaround */
#define STAT_HDRS(i, k, v) \
        static char key_ ## i[] = k; \
        static char value_ ## i[] = v;
#include "vtc_h2_stattbl.h"
#undef STAT_HDRS

/*lint -save -e778 */
static const struct hpk_hdr sttbl[] = {
        {{NULL, 0, 0}, {NULL, 0, 0}, hpk_idx, 0},
#define STAT_HDRS(j, k, v) \
{ \
        .key = { \
                .ptr = key_ ## j, \
                .len = sizeof(k) - 1, \
                .huff = 0 \
        }, \
        .value = { \
                .ptr = value_ ## j, \
                .len = sizeof(v) - 1, \
                .huff = 0 \
        }, \
        .t = hpk_idx, \
        .i = j, \
},
#include "vtc_h2_stattbl.h"
#undef STAT_HDRS
};
/*lint -restore */

struct hpk_ctx {
        const struct hpk_hdr *sttbl;
        struct dynamic_table      dyntbl;
        uint32_t maxsize;
        uint32_t size;
};


struct hpk_iter *
HPK_NewIter(struct hpk_ctx *ctx, void *buf, int size)
{
        struct hpk_iter *iter = malloc(sizeof(*iter));
        assert(iter);
        assert(ctx);
        assert(buf);
        assert(size);
        iter->ctx = ctx;
        iter->orig = buf;
        iter->buf = buf;
        iter->end = iter->buf + size;
        return (iter);
}

void
HPK_FreeIter(struct hpk_iter *iter)
{
        free(iter);
}

static void
pop_header(struct hpk_ctx *ctx)
{
        assert(!VTAILQ_EMPTY(&ctx->dyntbl));
        struct dynhdr *h = VTAILQ_LAST(&ctx->dyntbl, dynamic_table);
        VTAILQ_REMOVE(&ctx->dyntbl, h, list);
        ctx->size -= h->header.key.len + h->header.value.len + 32;
        free(h->header.key.ptr);
        free(h->header.value.ptr);
        free(h);
}

void
push_header (struct hpk_ctx *ctx, const struct hpk_hdr *oh)
{
        const struct hpk_hdr *ih;
        struct dynhdr *h;
        uint32_t len;

        assert(ctx->size <= ctx->maxsize);
        AN(oh);

        if (!ctx->maxsize)
                return;
        len = oh->value.len + 32;
        if (oh->key.ptr)
                len += oh->key.len;
        else {
                AN(oh->i);
                ih = HPK_GetHdr(ctx, oh->i);
                AN(ih);
                len += ih->key.len;
        }

        while (!VTAILQ_EMPTY(&ctx->dyntbl) && ctx->maxsize - ctx->size < len)
                pop_header(ctx);
        if (ctx->maxsize - ctx->size >= len) {
                h = malloc(sizeof(*h));
                AN(h);
                h->header.t = hpk_idx;

                if (oh->key.ptr) {
                        h->header.key.len = oh->key.len;
                        h->header.key.ptr = malloc(oh->key.len + 1L);
                        AN(h->header.key.ptr);
                        memcpy(h->header.key.ptr,
                            oh->key.ptr, oh->key.len + 1L);
                } else {
                        AN(oh->i);
                        ih = HPK_GetHdr(ctx, oh->i);
                        AN(ih);

                        h->header.key.len = ih->key.len;
                        h->header.key.ptr = malloc(ih->key.len + 1L);
                        AN(h->header.key.ptr);
                        memcpy(h->header.key.ptr,
                            ih->key.ptr, ih->key.len + 1L);
                }

                h->header.value.len = oh->value.len;
                h->header.value.ptr = malloc(oh->value.len + 1L);
                AN(h->header.value.ptr);
                memcpy(h->header.value.ptr, oh->value.ptr, oh->value.len + 1L);

                VTAILQ_INSERT_HEAD(&ctx->dyntbl, h, list);
                ctx->size += len;
        }

}

enum hpk_result
HPK_ResizeTbl(struct hpk_ctx *ctx, uint32_t num)
{
        ctx->maxsize = num;
        while (!VTAILQ_EMPTY(&ctx->dyntbl) && ctx->maxsize < ctx->size)
                pop_header(ctx);
        return (hpk_done);
}

static const struct hpk_txt *
tbl_get_field(const struct hpk_ctx *ctx, uint32_t idx, int key)
{
        struct dynhdr *dh;
        assert(ctx);
        if (idx > 61 + ctx->size)
                return (NULL);
        else if (idx <= 61) {
                if (key)
                        return (&ctx->sttbl[idx].key);
                else
                        return (&ctx->sttbl[idx].value);
        }

        idx -= 62;
        VTAILQ_FOREACH(dh, &ctx->dyntbl, list)
                if (!idx--)
                        break;
        if (idx && dh) {
                if (key)
                        return (&dh->header.key);
                else
                        return (&dh->header.value);
        } else
                return (NULL);
}

const struct hpk_txt *
tbl_get_key(const struct hpk_ctx *ctx, uint32_t idx)
{
        return (tbl_get_field(ctx, idx, 1));
}

const struct hpk_txt *
tbl_get_value(const struct hpk_ctx *ctx, uint32_t idx)
{
        return (tbl_get_field(ctx, idx, 0));
}

const struct hpk_hdr *
HPK_GetHdr(const struct hpk_ctx *ctx, uint32_t idx)
{
        uint32_t oi = idx;
        struct dynhdr *dh;
        assert(ctx);
        if (idx > 61 + ctx->size)
                return (NULL);
        else if (idx <= 61)
                return (&ctx->sttbl[idx]);

        idx -= 62;
        VTAILQ_FOREACH(dh, &ctx->dyntbl, list)
                if (!idx--)
                        break;
        if (idx && dh) {
                dh->header.i = oi;
                return (&dh->header);
        } else
                return (NULL);
}

uint32_t
HPK_GetTblSize(const struct hpk_ctx *ctx)
{
        return (ctx->size);
}

uint32_t
HPK_GetTblMaxSize(const struct hpk_ctx *ctx)
{
        return (ctx->maxsize);
}

uint32_t
HPK_GetTblLength(const struct hpk_ctx *ctx)
{
        struct dynhdr *dh;
        uint32_t l = 0;
        VTAILQ_FOREACH(dh, &ctx->dyntbl, list)
                l++;
        return (l);
}

#if 0
void
dump_dyn_tbl(const struct hpk_ctx *ctx)
{
        int i = 0;
        struct dynhdr *dh;
        printf("DUMPING %u/%u\n", ctx->size, ctx->maxsize);
        VTAILQ_FOREACH(dh, &ctx->dyntbl, list) {
                printf(" (%d) %s: %s\n",
                    i++, dh->header.key.ptr, dh->header.value.ptr);
        }
        printf("DONE\n");
}
#endif

struct hpk_ctx *
HPK_NewCtx(uint32_t maxsize)
{
        struct hpk_ctx *ctx = calloc(1, sizeof(*ctx));
        assert(ctx);
        ctx->sttbl = sttbl;
        ctx->maxsize = maxsize;
        ctx->size = 0;
        return (ctx);
}

void
HPK_FreeCtx(struct hpk_ctx *ctx)
{

        while (!VTAILQ_EMPTY(&ctx->dyntbl))
                pop_header(ctx);
        free(ctx);
}

		varnish-cache/bin/varnishtest/vtc_h2_tbl.c
0		/*-
1		* Copyright (c) 2008-2016 Varnish Software AS
2		* All rights reserved.
3		*
4		* Author: Guillaume Quintard <guillaume.quintard@gmail.com>
5		*
6		* SPDX-License-Identifier: BSD-2-Clause
7		*
8		* Redistribution and use in source and binary forms, with or without
9		* modification, are permitted provided that the following conditions
10		* are met:
11		* 1. Redistributions of source code must retain the above copyright
12		* notice, this list of conditions and the following disclaimer.
13		* 2. Redistributions in binary form must reproduce the above copyright
14		* notice, this list of conditions and the following disclaimer in the
15		* documentation and/or other materials provided with the distribution.
16		*
17		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
21		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27		* SUCH DAMAGE.
28		*/
29
30		#include <stdint.h>
31		#include <stdio.h>
32		#include <stdlib.h>
33		#include <string.h>
34
35		#include "vdef.h"
36
37		#include "vas.h"
38		#include "vqueue.h"
39
40		#include "hpack.h"
41		#include "vtc_h2_priv.h"
42
43		/* TODO: fix that crazy workaround */
44		#define STAT_HDRS(i, k, v) \
45		static char key_ ## i[] = k; \
46		static char value_ ## i[] = v;
47		#include "vtc_h2_stattbl.h"
48		#undef STAT_HDRS
49
50		/lint -save -e778 /
51		static const struct hpk_hdr sttbl[] = {
52		{{NULL, 0, 0}, {NULL, 0, 0}, hpk_idx, 0},
53		#define STAT_HDRS(j, k, v) \
54		{ \
55		.key = { \
56		.ptr = key_ ## j, \
57		.len = sizeof(k) - 1, \
58		.huff = 0 \
59		}, \
60		.value = { \
61		.ptr = value_ ## j, \
62		.len = sizeof(v) - 1, \
63		.huff = 0 \
64		}, \
65		.t = hpk_idx, \
66		.i = j, \
67		},
68		#include "vtc_h2_stattbl.h"
69		#undef STAT_HDRS
70		};
71		/lint -restore /
72
73		struct hpk_ctx {
74		const struct hpk_hdr *sttbl;
75		struct dynamic_table dyntbl;
76		uint32_t maxsize;
77		uint32_t size;
78		};
79
80
81		struct hpk_iter *
82	2892	HPK_NewIter(struct hpk_ctx ctx, void buf, int size)
83		{
84	2892	struct hpk_iter iter = malloc(sizeof(iter));
85	2892	assert(iter);
86	2892	assert(ctx);
87	2892	assert(buf);
88	2892	assert(size);
89	2892	iter->ctx = ctx;
90	2892	iter->orig = buf;
91	2892	iter->buf = buf;
92	2892	iter->end = iter->buf + size;
93	2892	return (iter);
94		}
95
96		void
97	2892	HPK_FreeIter(struct hpk_iter *iter)
98		{
99	2892	free(iter);
100	2892	}
101
102		static void
103	80	pop_header(struct hpk_ctx *ctx)
104		{
105	80	assert(!VTAILQ_EMPTY(&ctx->dyntbl));
106	80	struct dynhdr *h = VTAILQ_LAST(&ctx->dyntbl, dynamic_table);
107	80	VTAILQ_REMOVE(&ctx->dyntbl, h, list);
108	80	ctx->size -= h->header.key.len + h->header.value.len + 32;
109	80	free(h->header.key.ptr);
110	80	free(h->header.value.ptr);
111	80	free(h);
112	80	}
113
114		void
115	80	push_header (struct hpk_ctx ctx, const struct hpk_hdr oh)
116		{
117		const struct hpk_hdr *ih;
118		struct dynhdr *h;
119		uint32_t len;
120
121	80	assert(ctx->size <= ctx->maxsize);
122	80	AN(oh);
123
124	80	if (!ctx->maxsize)
125	0	return;
126	80	len = oh->value.len + 32;
127	80	if (oh->key.ptr)
128	50	len += oh->key.len;
129		else {
130	30	AN(oh->i);
131	30	ih = HPK_GetHdr(ctx, oh->i);
132	30	AN(ih);
133	30	len += ih->key.len;
134		}
135
136	100	while (!VTAILQ_EMPTY(&ctx->dyntbl) && ctx->maxsize - ctx->size < len)
137	20	pop_header(ctx);
138	80	if (ctx->maxsize - ctx->size >= len) {
139	80	h = malloc(sizeof(*h));
140	80	AN(h);
141	80	h->header.t = hpk_idx;
142
143	80	if (oh->key.ptr) {
144	50	h->header.key.len = oh->key.len;
145	50	h->header.key.ptr = malloc(oh->key.len + 1L);
146	50	AN(h->header.key.ptr);
147	100	memcpy(h->header.key.ptr,
148	50	oh->key.ptr, oh->key.len + 1L);
149	50	} else {
150	30	AN(oh->i);
151	30	ih = HPK_GetHdr(ctx, oh->i);
152	30	AN(ih);
153
154	30	h->header.key.len = ih->key.len;
155	30	h->header.key.ptr = malloc(ih->key.len + 1L);
156	30	AN(h->header.key.ptr);
157	60	memcpy(h->header.key.ptr,
158	30	ih->key.ptr, ih->key.len + 1L);
159		}
160
161	80	h->header.value.len = oh->value.len;
162	80	h->header.value.ptr = malloc(oh->value.len + 1L);
163	80	AN(h->header.value.ptr);
164	80	memcpy(h->header.value.ptr, oh->value.ptr, oh->value.len + 1L);
165
166	80	VTAILQ_INSERT_HEAD(&ctx->dyntbl, h, list);
167	80	ctx->size += len;
168	80	}
169
170	80	}
171
172		enum hpk_result
173	20	HPK_ResizeTbl(struct hpk_ctx *ctx, uint32_t num)
174		{
175	20	ctx->maxsize = num;
176	30	while (!VTAILQ_EMPTY(&ctx->dyntbl) && ctx->maxsize < ctx->size)
177	10	pop_header(ctx);
178	20	return (hpk_done);
179		}
180
181		static const struct hpk_txt *
182	1412	tbl_get_field(const struct hpk_ctx *ctx, uint32_t idx, int key)
183		{
184		struct dynhdr *dh;
185	1412	assert(ctx);
186	1412	if (idx > 61 + ctx->size)
187	4	return (NULL);
188	1408	else if (idx <= 61) {
189	1368	if (key)
190	1162	return (&ctx->sttbl[idx].key);
191		else
192	206	return (&ctx->sttbl[idx].value);
193		}
194
195	40	idx -= 62;
196	92	VTAILQ_FOREACH(dh, &ctx->dyntbl, list)
197	92	if (!idx--)
198	40	break;
199	40	if (idx && dh) {
200	40	if (key)
201	20	return (&dh->header.key);
202		else
203	20	return (&dh->header.value);
204		} else
205	0	return (NULL);
206	1412	}
207
208		const struct hpk_txt *
209	1186	tbl_get_key(const struct hpk_ctx *ctx, uint32_t idx)
210		{
211	1186	return (tbl_get_field(ctx, idx, 1));
212		}
213
214		const struct hpk_txt *
215	226	tbl_get_value(const struct hpk_ctx *ctx, uint32_t idx)
216		{
217	226	return (tbl_get_field(ctx, idx, 0));
218		}
219
220		const struct hpk_hdr *
221	252	HPK_GetHdr(const struct hpk_ctx *ctx, uint32_t idx)
222		{
223	252	uint32_t oi = idx;
224		struct dynhdr *dh;
225	252	assert(ctx);
226	252	if (idx > 61 + ctx->size)
227	0	return (NULL);
228	252	else if (idx <= 61)
229	60	return (&ctx->sttbl[idx]);
230
231	192	idx -= 62;
232	376	VTAILQ_FOREACH(dh, &ctx->dyntbl, list)
233	376	if (!idx--)
234	192	break;
235	192	if (idx && dh) {
236	192	dh->header.i = oi;
237	192	return (&dh->header);
238		} else
239	0	return (NULL);
240	252	}
241
242		uint32_t
243	52	HPK_GetTblSize(const struct hpk_ctx *ctx)
244		{
245	52	return (ctx->size);
246		}
247
248		uint32_t
249	0	HPK_GetTblMaxSize(const struct hpk_ctx *ctx)
250		{
251	0	return (ctx->maxsize);
252		}
253
254		uint32_t
255	2	HPK_GetTblLength(const struct hpk_ctx *ctx)
256		{
257		struct dynhdr *dh;
258	2	uint32_t l = 0;
259	4	VTAILQ_FOREACH(dh, &ctx->dyntbl, list)
260	2	l++;
261	2	return (l);
262		}
263
264		#if 0
265		void
266		dump_dyn_tbl(const struct hpk_ctx *ctx)
267		{
268		int i = 0;
269		struct dynhdr *dh;
270		printf("DUMPING %u/%u\n", ctx->size, ctx->maxsize);
271		VTAILQ_FOREACH(dh, &ctx->dyntbl, list) {
272		printf(" (%d) %s: %s\n",
273		i++, dh->header.key.ptr, dh->header.value.ptr);
274		}
275		printf("DONE\n");
276		}
277		#endif
278
279		struct hpk_ctx *
280	792	HPK_NewCtx(uint32_t maxsize)
281		{
282	792	struct hpk_ctx ctx = calloc(1, sizeof(ctx));
283	792	assert(ctx);
284	792	ctx->sttbl = sttbl;
285	792	ctx->maxsize = maxsize;
286	792	ctx->size = 0;
287	792	return (ctx);
288		}
289
290		void
291	792	HPK_FreeCtx(struct hpk_ctx *ctx)
292		{
293
294	842	while (!VTAILQ_EMPTY(&ctx->dyntbl))
295	50	pop_header(ctx);
296	792	free(ctx);
297	792	}