GCOV - Varnish Cache


/*-
 * Copyright (c) 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.
 */

#include "config.h"

#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>

#include <netinet/in.h>

#include <unistd.h>

#include "vtc.h"

#include "vend.h"
#include "vsa.h"
#include "vtcp.h"

static const char vpx1_sig[] = {'P', 'R', 'O', 'X', 'Y'};
static const char vpx2_sig[] = {
        '\r', '\n', '\r', '\n', '\0', '\r', '\n',
        'Q', 'U', 'I', 'T', '\n',
};

//lint -esym(750, PP2_*)
#define PP2_TYPE_ALPN           0x01
#define PP2_TYPE_AUTHORITY      0x02
#define PP2_TYPE_CRC32C         0x03
#define PP2_TYPE_NOOP           0x04
#define PP2_TYPE_UNIQUE_ID      0x05
#define PP2_TYPE_SSL            0x20
#define PP2_SUBTYPE_SSL_VERSION 0x21
#define PP2_SUBTYPE_SSL_CN      0x22
#define PP2_SUBTYPE_SSL_CIPHER  0x23
#define PP2_SUBTYPE_SSL_SIG_ALG 0x24
#define PP2_SUBTYPE_SSL_KEY_ALG 0x25
#define PP2_SUBTYPE_SSL_MAX     0x25
#define PP2_TYPE_NETNS          0x30

struct pp2_type {
        const char * name;
        uint8_t type;
};

/* sorted ! */
static const struct pp2_type pp2_types[] = {
        {"alpn",        PP2_TYPE_ALPN},
        {"authority",   PP2_TYPE_AUTHORITY},
        {"crc32c",      PP2_TYPE_CRC32C},
        {"netns",       PP2_TYPE_NETNS},
        {"noop",        PP2_TYPE_NOOP},
        {"unique_id",   PP2_TYPE_UNIQUE_ID}
};

static int
pp2cmp(const void *va, const void *vb)
{
        const struct pp2_type *a = va;
        const struct pp2_type *b = vb;
        return (strcmp(a->name, b->name));
}

void
vtc_proxy_tlv(struct vtclog *vl, struct vsb *vsb, const char *kva)
{
        struct pp2_type *pp2, needle;
        char *save = NULL, *kv;
        struct vsb *vsb2;
        const char *p;
        uint16_t le;
        ssize_t sz;

        kv = strdup(kva);
        AN(kv);

        p = strtok_r(kv, "=", &save);
        AN(p);
        if (p[0] == '0' && p[1] == 'x') {
                p += 2;
                vsb2 = vtc_hex_to_bin(vl, p);
                AN(vsb2);
                if (VSB_len(vsb2) != 1)
                        vtc_fatal(vl, "tlv hex type has wrong length");
                VSB_bcat(vsb, VSB_data(vsb2), 1);
                VSB_destroy(&vsb2);
        }
        else {
                needle = (typeof(needle)){p, 0};
                pp2 = bsearch(&needle, pp2_types, sizeof pp2_types / sizeof pp2_types[0],
                    sizeof pp2_types[0], pp2cmp);
                if (pp2 == NULL)
                        vtc_fatal(vl, "tlv type %s not found", p);
                VSB_putc(vsb, pp2->type);
        }

        p = strtok_r(NULL, "", &save);
        if (p == NULL)
                vtc_fatal(vl, "tlv value missing");
        if (p[0] == '0' && p[1] == 'x')
                vsb2 = vtc_hex_to_bin(vl, p + 2);
        else {
                vsb2 = VSB_new_auto();
                AN(vsb2);
                VSB_cat(vsb2, p);
                AZ(VSB_finish(vsb2));
        }
        AN(vsb2);
        free(kv);

        sz = VSB_len(vsb2);
        assert(sz >= 0);
        assert(sz <= UINT16_MAX);

        vbe16enc(&le, (uint16_t)sz);
        assert(sizeof(le) == 2);
        VSB_bcat(vsb, &le, 2);
        VSB_bcat(vsb, VSB_data(vsb2), sz);
        VSB_destroy(&vsb2);
}

static void
vpx_enc_addr(struct vsb *vsb, int proto, const struct suckaddr *s)
{
        const struct sockaddr_in *sin4;
        const struct sockaddr_in6 *sin6;
        socklen_t sl;

        if (proto == PF_INET6) {
                sin6 = VSA_Get_Sockaddr(s, &sl);        //lint !e826
                AN(sin6);
                assert(sl >= sizeof(*sin6));
                VSB_bcat(vsb, &sin6->sin6_addr, sizeof(sin6->sin6_addr));
        } else {
                sin4 = VSA_Get_Sockaddr(s, &sl);        //lint !e826
                AN(sin4);
                assert(sl >= sizeof(*sin4));
                VSB_bcat(vsb, &sin4->sin_addr, sizeof(sin4->sin_addr));
        }
}

static void
vpx_enc_port(struct vsb *vsb, const struct suckaddr *s)
{
        uint8_t b[2];

        vbe16enc(b, (uint16_t)VSA_Port(s));
        VSB_bcat(vsb, b, sizeof(b));
}

int
vtc_send_proxy(int fd, int version, const struct suckaddr *sac,
    const struct suckaddr *sas, struct vsb *tlv)
{
        struct vsb *vsb;
        char hc[VTCP_ADDRBUFSIZE];
        char pc[VTCP_PORTBUFSIZE];
        char hs[VTCP_ADDRBUFSIZE];
        char ps[VTCP_PORTBUFSIZE];
        uint16_t le, l;
        int i;
        int proto;

        AN(sac);
        AN(sas);

        assert(version == 1 || version == 2);
        vsb = VSB_new_auto();
        AN(vsb);

        proto = VSA_Get_Proto(sas);
        assert(proto == PF_INET6 || proto == PF_INET);

        if (tlv == NULL)
                l = 0;
        else
                l = VSB_len(tlv);

        assert(l <= UINT16_MAX - 0x24);

        if (version == 1) {
                VSB_bcat(vsb, vpx1_sig, sizeof(vpx1_sig));
                if (proto == PF_INET6)
                        VSB_cat(vsb, " TCP6 ");
                else if (proto == PF_INET)
                        VSB_cat(vsb, " TCP4 ");
                VTCP_name(sac, hc, sizeof(hc), pc, sizeof(pc));
                VTCP_name(sas, hs, sizeof(hs), ps, sizeof(ps));
                VSB_printf(vsb, "%s %s %s %s\r\n", hc, hs, pc, ps);
        } else if (version == 2) {
                VSB_bcat(vsb, vpx2_sig, sizeof(vpx2_sig));
                VSB_putc(vsb, 0x21);
                if (proto == PF_INET6) {
                        VSB_putc(vsb, 0x21);
                        l += 0x24;
                } else if (proto == PF_INET) {
                        VSB_putc(vsb, 0x11);
                        l += 0x0c;
                } else
                        WRONG("proto");

                vbe16enc(&le, l);
                assert(sizeof(le) == 2);
                VSB_bcat(vsb, &le, 2);
                vpx_enc_addr(vsb, proto, sac);
                vpx_enc_addr(vsb, proto, sas);
                vpx_enc_port(vsb, sac);
                vpx_enc_port(vsb, sas);
        } else
                WRONG("Wrong proxy version");

        AZ(VSB_finish(vsb));
        i = VSB_tofile(vsb, fd);
        VSB_destroy(&vsb);
        if (i != 0 && tlv != NULL)
                VSB_destroy(&tlv);
        if (i != 0 || tlv == NULL)
                return (i);

        i = VSB_tofile(tlv, fd);
        VSB_destroy(&tlv);
        return (i);
}

		varnish-cache/bin/varnishtest/vtc_proxy.c
0		/*-
1		* Copyright (c) 2015 Varnish Software AS
2		* All rights reserved.
3		*
4		* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
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 "config.h"
31
32		#include <stdlib.h>
33		#include <string.h>
34		#include <sys/socket.h>
35
36		#include <netinet/in.h>
37
38		#include <unistd.h>
39
40		#include "vtc.h"
41
42		#include "vend.h"
43		#include "vsa.h"
44		#include "vtcp.h"
45
46		static const char vpx1_sig[] = {'P', 'R', 'O', 'X', 'Y'};
47		static const char vpx2_sig[] = {
48		'\r', '\n', '\r', '\n', '\0', '\r', '\n',
49		'Q', 'U', 'I', 'T', '\n',
50		};
51
52		//lint -esym(750, PP2_*)
53		#define PP2_TYPE_ALPN 0x01
54		#define PP2_TYPE_AUTHORITY 0x02
55		#define PP2_TYPE_CRC32C 0x03
56		#define PP2_TYPE_NOOP 0x04
57		#define PP2_TYPE_UNIQUE_ID 0x05
58		#define PP2_TYPE_SSL 0x20
59		#define PP2_SUBTYPE_SSL_VERSION 0x21
60		#define PP2_SUBTYPE_SSL_CN 0x22
61		#define PP2_SUBTYPE_SSL_CIPHER 0x23
62		#define PP2_SUBTYPE_SSL_SIG_ALG 0x24
63		#define PP2_SUBTYPE_SSL_KEY_ALG 0x25
64		#define PP2_SUBTYPE_SSL_MAX 0x25
65		#define PP2_TYPE_NETNS 0x30
66
67		struct pp2_type {
68		const char * name;
69		uint8_t type;
70		};
71
72		/* sorted ! */
73		static const struct pp2_type pp2_types[] = {
74		{"alpn", PP2_TYPE_ALPN},
75		{"authority", PP2_TYPE_AUTHORITY},
76		{"crc32c", PP2_TYPE_CRC32C},
77		{"netns", PP2_TYPE_NETNS},
78		{"noop", PP2_TYPE_NOOP},
79		{"unique_id", PP2_TYPE_UNIQUE_ID}
80		};
81
82		static int
83	6	pp2cmp(const void va, const void vb)
84		{
85	6	const struct pp2_type *a = va;
86	6	const struct pp2_type *b = vb;
87	6	return (strcmp(a->name, b->name));
88		}
89
90		void
91	2	vtc_proxy_tlv(struct vtclog vl, struct vsb vsb, const char *kva)
92		{
93		struct pp2_type *pp2, needle;
94	2	char save = NULL, kv;
95		struct vsb *vsb2;
96		const char *p;
97		uint16_t le;
98		ssize_t sz;
99
100	2	kv = strdup(kva);
101	2	AN(kv);
102
103	2	p = strtok_r(kv, "=", &save);
104	2	AN(p);
105	2	if (p[0] == '0' && p[1] == 'x') {
106	0	p += 2;
107	0	vsb2 = vtc_hex_to_bin(vl, p);
108	0	AN(vsb2);
109	0	if (VSB_len(vsb2) != 1)
110	0	vtc_fatal(vl, "tlv hex type has wrong length");
111	0	VSB_bcat(vsb, VSB_data(vsb2), 1);
112	0	VSB_destroy(&vsb2);
113	0	}
114		else {
115	2	needle = (typeof(needle)){p, 0};
116	2	pp2 = bsearch(&needle, pp2_types, sizeof pp2_types / sizeof pp2_types[0],
117		sizeof pp2_types[0], pp2cmp);
118	2	if (pp2 == NULL)
119	0	vtc_fatal(vl, "tlv type %s not found", p);
120	2	VSB_putc(vsb, pp2->type);
121		}
122
123	2	p = strtok_r(NULL, "", &save);
124	2	if (p == NULL)
125	0	vtc_fatal(vl, "tlv value missing");
126	2	if (p[0] == '0' && p[1] == 'x')
127	0	vsb2 = vtc_hex_to_bin(vl, p + 2);
128		else {
129	2	vsb2 = VSB_new_auto();
130	2	AN(vsb2);
131	2	VSB_cat(vsb2, p);
132	2	AZ(VSB_finish(vsb2));
133		}
134	2	AN(vsb2);
135	2	free(kv);
136
137	2	sz = VSB_len(vsb2);
138	2	assert(sz >= 0);
139	2	assert(sz <= UINT16_MAX);
140
141	2	vbe16enc(&le, (uint16_t)sz);
142	2	assert(sizeof(le) == 2);
143	2	VSB_bcat(vsb, &le, 2);
144	2	VSB_bcat(vsb, VSB_data(vsb2), sz);
145	2	VSB_destroy(&vsb2);
146	2	}
147
148		static void
149	8	vpx_enc_addr(struct vsb vsb, int proto, const struct suckaddr s)
150		{
151		const struct sockaddr_in *sin4;
152		const struct sockaddr_in6 *sin6;
153		socklen_t sl;
154
155	8	if (proto == PF_INET6) {
156	4	sin6 = VSA_Get_Sockaddr(s, &sl); //lint !e826
157	4	AN(sin6);
158	4	assert(sl >= sizeof(*sin6));
159	4	VSB_bcat(vsb, &sin6->sin6_addr, sizeof(sin6->sin6_addr));
160	4	} else {
161	4	sin4 = VSA_Get_Sockaddr(s, &sl); //lint !e826
162	4	AN(sin4);
163	4	assert(sl >= sizeof(*sin4));
164	4	VSB_bcat(vsb, &sin4->sin_addr, sizeof(sin4->sin_addr));
165		}
166	8	}
167
168		static void
169	8	vpx_enc_port(struct vsb vsb, const struct suckaddr s)
170		{
171		uint8_t b[2];
172
173	8	vbe16enc(b, (uint16_t)VSA_Port(s));
174	8	VSB_bcat(vsb, b, sizeof(b));
175	8	}
176
177		int
178	12	vtc_send_proxy(int fd, int version, const struct suckaddr *sac,
179		const struct suckaddr sas, struct vsb tlv)
180		{
181		struct vsb *vsb;
182		char hc[VTCP_ADDRBUFSIZE];
183		char pc[VTCP_PORTBUFSIZE];
184		char hs[VTCP_ADDRBUFSIZE];
185		char ps[VTCP_PORTBUFSIZE];
186		uint16_t le, l;
187		int i;
188		int proto;
189
190	12	AN(sac);
191	12	AN(sas);
192
193	12	assert(version == 1 \|\| version == 2);
194	12	vsb = VSB_new_auto();
195	12	AN(vsb);
196
197	12	proto = VSA_Get_Proto(sas);
198	12	assert(proto == PF_INET6 \|\| proto == PF_INET);
199
200	12	if (tlv == NULL)
201	0	l = 0;
202		else
203	12	l = VSB_len(tlv);
204
205	12	assert(l <= UINT16_MAX - 0x24);
206
207	12	if (version == 1) {
208	8	VSB_bcat(vsb, vpx1_sig, sizeof(vpx1_sig));
209	8	if (proto == PF_INET6)
210	4	VSB_cat(vsb, " TCP6 ");
211	4	else if (proto == PF_INET)
212	4	VSB_cat(vsb, " TCP4 ");
213	8	VTCP_name(sac, hc, sizeof(hc), pc, sizeof(pc));
214	8	VTCP_name(sas, hs, sizeof(hs), ps, sizeof(ps));
215	8	VSB_printf(vsb, "%s %s %s %s\r\n", hc, hs, pc, ps);
216	12	} else if (version == 2) {
217	4	VSB_bcat(vsb, vpx2_sig, sizeof(vpx2_sig));
218	4	VSB_putc(vsb, 0x21);
219	4	if (proto == PF_INET6) {
220	2	VSB_putc(vsb, 0x21);
221	2	l += 0x24;
222	4	} else if (proto == PF_INET) {
223	2	VSB_putc(vsb, 0x11);
224	2	l += 0x0c;
225	2	} else
226	0	WRONG("proto");
227
228	4	vbe16enc(&le, l);
229	4	assert(sizeof(le) == 2);
230	4	VSB_bcat(vsb, &le, 2);
231	4	vpx_enc_addr(vsb, proto, sac);
232	4	vpx_enc_addr(vsb, proto, sas);
233	4	vpx_enc_port(vsb, sac);
234	4	vpx_enc_port(vsb, sas);
235	4	} else
236	0	WRONG("Wrong proxy version");
237
238	12	AZ(VSB_finish(vsb));
239	12	i = VSB_tofile(vsb, fd);
240	12	VSB_destroy(&vsb);
241	12	if (i != 0 && tlv != NULL)
242	0	VSB_destroy(&tlv);
243	12	if (i != 0 \|\| tlv == NULL)
244	0	return (i);
245
246	12	i = VSB_tofile(tlv, fd);
247	12	VSB_destroy(&tlv);
248	12	return (i);
249	12	}