GCOV - Varnish Cache


/*-
 * Copyright (c) 2008-2010 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 <sys/socket.h>
#include <sys/types.h>
#include <sys/stat.h>

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

#include "vsa.h"
#include "vtc.h"

#include "vtcp.h"
#include "vus.h"

struct server {
        unsigned                magic;
#define SERVER_MAGIC            0x55286619
        char                    *name;
        struct vtclog           *vl;
        VTAILQ_ENTRY(server)    list;
        struct vtc_sess         *vsp;
        char                    run;

        char                    *spec;

        int                     depth;
        int                     sock;
        int                     fd;
        unsigned                is_dispatch;
        char                    listen[256];
        char                    aaddr[VTCP_ADDRBUFSIZE];
        char                    aport[VTCP_PORTBUFSIZE];

        pthread_t               tp;
};

static pthread_mutex_t          server_mtx;

static VTAILQ_HEAD(, server)    servers = VTAILQ_HEAD_INITIALIZER(servers);

/**********************************************************************
 * Allocate and initialize a server
 */

static struct server *
server_new(const char *name, struct vtclog *vl)
{
        struct server *s;

        VTC_CHECK_NAME(vl, name, "Server", 's');
        ALLOC_OBJ(s, SERVER_MAGIC);
        AN(s);
        REPLACE(s->name, name);
        s->vl = vtc_logopen("%s", s->name);
        AN(s->vl);
        s->vsp = Sess_New(s->vl, name);
        AN(s->vsp);

        bprintf(s->listen, "%s", default_listen_addr);
        s->depth = 10;
        s->sock = -1;
        s->fd = -1;
        PTOK(pthread_mutex_lock(&server_mtx));
        VTAILQ_INSERT_TAIL(&servers, s, list);
        PTOK(pthread_mutex_unlock(&server_mtx));
        return (s);
}

/**********************************************************************
 * Clean up a server
 */

static void
server_delete(struct server *s)
{

        CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
        Sess_Destroy(&s->vsp);
        macro_undef(s->vl, s->name, "addr");
        macro_undef(s->vl, s->name, "port");
        macro_undef(s->vl, s->name, "sock");
        vtc_logclose(s->vl);
        free(s->name);
        /* XXX: MEMLEAK (?) (VSS ??) */
        FREE_OBJ(s);
}

/**********************************************************************
 * Server listen
 */

struct helper {
        int             depth;
        const char      **errp;
};

/* cf. VTCP_listen_on() */
static int v_matchproto_(vus_resolved_f)
uds_listen(void *priv, const struct sockaddr_un *uds)
{
        int sock, e;
        struct helper *hp = priv;

        sock = VUS_bind(uds, hp->errp);
        if (sock >= 0)   {
                if (listen(sock, hp->depth) != 0) {
                        e = errno;
                        closefd(&sock);
                        errno = e;
                        if (hp->errp != NULL)
                                *hp->errp = "listen(2)";
                        return (-1);
                }
        }
        if (sock > 0) {
                *hp->errp = NULL;
                return (sock);
        }
        AN(*hp->errp);
        return (0);
}

static void
server_listen_uds(struct server *s, const char **errp)
{
        mode_t m;
        struct helper h;

        h.depth = s->depth;
        h.errp = errp;

        errno = 0;
        if (unlink(s->listen) != 0 && errno != ENOENT)
                vtc_fatal(s->vl, "Could not unlink %s before bind: %s",
                    s->listen, strerror(errno));
        /*
         * Temporarily set the umask to 0 to avoid issues with
         * permissions.
         */
        m = umask(0);
        s->sock = VUS_resolver(s->listen, uds_listen, &h, errp);
        (void)umask(m);
        if (*errp != NULL)
                return;
        assert(s->sock > 0);
        macro_def(s->vl, s->name, "addr", "0.0.0.0");
        macro_def(s->vl, s->name, "port", "0");
        macro_def(s->vl, s->name, "sock", "%s", s->listen);
}

static void
server_listen_tcp(struct server *s, const char **errp)
{
        char buf[vsa_suckaddr_len];
        const struct suckaddr *sua;

        s->sock = VTCP_listen_on(s->listen, "0", s->depth, errp);
        if (*errp != NULL)
                return;
        assert(s->sock > 0);
        sua = VSA_getsockname(s->sock, buf, sizeof buf);
        AN(sua);
        VTCP_name(sua, s->aaddr, sizeof s->aaddr,
            s->aport, sizeof s->aport);

        /* Record the actual port, and reuse it on subsequent starts */
        if (VSA_Get_Proto(sua) == AF_INET)
                bprintf(s->listen, "%s:%s", s->aaddr, s->aport);
        else
                bprintf(s->listen, "[%s]:%s", s->aaddr, s->aport);

        macro_def(s->vl, s->name, "addr", "%s", s->aaddr);
        macro_def(s->vl, s->name, "port", "%s", s->aport);
        macro_def(s->vl, s->name, "sock", "%s", s->listen);
}

static void
server_listen(struct server *s)
{
        const char *err;

        CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);

        if (s->sock >= 0)
                VTCP_close(&s->sock);
        if (VUS_is(s->listen))
                server_listen_uds(s, &err);
        else
                server_listen_tcp(s, &err);
        if (err != NULL)
                vtc_fatal(s->vl,
                    "Server listen address (%s) cannot be resolved: %s",
                    s->listen, err);
}

/**********************************************************************
 * Server thread
 */

static int
server_conn(void *priv, struct vtclog *vl)
{
        struct server *s;
        struct sockaddr_storage addr_s;
        struct sockaddr *addr;
        char abuf[VTCP_ADDRBUFSIZE];
        char pbuf[VTCP_PORTBUFSIZE];
        socklen_t l;
        int fd;

        CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);

        addr = (void*)&addr_s;
        l = sizeof addr_s;
        fd = accept(s->sock, addr, &l);
        if (fd < 0)
                vtc_fatal(vl, "Accept failed: %s", strerror(errno));
        if (VUS_is(s->listen))
                vtc_log(vl, 3, "accepted fd %d 0.0.0.0 0", fd);
        else {
                VTCP_hisname(fd, abuf, sizeof abuf, pbuf, sizeof pbuf);
                vtc_log(vl, 3, "accepted fd %d %s %s", fd, abuf, pbuf);
        }
        return (fd);
}

static void
server_disc(void *priv, struct vtclog *vl, int *fdp)
{
        int j;
        struct server *s;

        CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
        vtc_log(vl, 3, "shutting fd %d (server run)", *fdp);
        j = shutdown(*fdp, SHUT_WR);
        if (!vtc_stop && !VTCP_Check(j))
                vtc_fatal(vl, "Shutdown failed: %s", strerror(errno));
        VTCP_close(fdp);
}

static void
server_start_thread(struct server *s)
{

        s->run = 1;
        s->tp = Sess_Start_Thread(
            s,
            s->vsp,
            server_conn,
            server_disc,
            s->listen,
            &s->sock,
            s->spec
        );
}

/**********************************************************************
 * Start the server thread
 */

static void
server_start(struct server *s)
{
        CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
        vtc_log(s->vl, 2, "Starting server");
        server_listen(s);
        vtc_log(s->vl, 1, "Listen on %s", s->listen);
        server_start_thread(s);
}

/**********************************************************************
 */

static void *
server_dispatch_wrk(void *priv)
{
        struct server *s;
        struct vtclog *vl;
        int j, fd;

        CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
        assert(s->sock < 0);

        vl = vtc_logopen("%s", s->name);
        pthread_cleanup_push(vtc_logclose, vl);

        fd = s->fd;

        vtc_log(vl, 3, "start with fd %d", fd);
        fd = sess_process(vl, s->vsp, s->spec, fd, &s->sock, s->listen);
        vtc_log(vl, 3, "shutting fd %d (server dispatch)", fd);
        j = shutdown(fd, SHUT_WR);
        if (!VTCP_Check(j))
                vtc_fatal(vl, "Shutdown failed: %s", strerror(errno));
        VTCP_close(&s->fd);
        vtc_log(vl, 2, "Ending");
        pthread_cleanup_pop(0);
        vtc_logclose(vl);
        return (NULL);
}

static void *
server_dispatch_thread(void *priv)
{
        struct server *s, *s2;
        static int sn = 1;
        int fd;
        char snbuf[8];
        struct vtclog *vl;
        struct sockaddr_storage addr_s;
        struct sockaddr *addr;
        socklen_t l;

        CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
        assert(s->sock >= 0);

        vl = vtc_logopen("%s", s->name);
        pthread_cleanup_push(vtc_logclose, vl);

        vtc_log(vl, 2, "Dispatch started on %s", s->listen);

        while (!vtc_stop) {
                addr = (void*)&addr_s;
                l = sizeof addr_s;
                fd = accept(s->sock, addr, &l);
                if (fd < 0)
                        vtc_fatal(vl, "Accepted failed: %s", strerror(errno));
                bprintf(snbuf, "s%d", sn++);
                vtc_log(vl, 3, "dispatch fd %d -> %s", fd, snbuf);
                s2 = server_new(snbuf, vl);
                s2->is_dispatch = 1;
                s2->spec = s->spec;
                bstrcpy(s2->listen, s->listen);
                s2->fd = fd;
                s2->run = 1;
                PTOK(pthread_create(&s2->tp, NULL, server_dispatch_wrk, s2));
        }
        pthread_cleanup_pop(0);
        vtc_logclose(vl);
        NEEDLESS(return (NULL));
}

static void
server_dispatch(struct server *s)
{
        CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
        server_listen(s);
        vtc_log(s->vl, 2, "Starting dispatch server");
        s->run = 1;
        PTOK(pthread_create(&s->tp, NULL, server_dispatch_thread, s));
}

/**********************************************************************
 * Force stop the server thread
 */

static void
server_break(struct server *s)
{
        void *res;

        CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
        vtc_log(s->vl, 2, "Breaking for server");
        (void)pthread_cancel(s->tp);
        PTOK(pthread_join(s->tp, &res));
        VTCP_close(&s->sock);
        s->tp = 0;
        s->run = 0;
}

/**********************************************************************
 * Wait for server thread to stop
 */

static void
server_wait(struct server *s)
{
        void *res;

        CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
        vtc_log(s->vl, 2, "Waiting for server (%d/%d)", s->sock, s->fd);
        PTOK(pthread_join(s->tp, &res));
        if (res != NULL && !vtc_stop)
                vtc_fatal(s->vl, "Server returned \"%p\"",
                    (char *)res);
        s->tp = 0;
        s->run = 0;
}

/**********************************************************************
 * Generate VCL backend decls for our servers
 */

void
cmd_server_gen_vcl(struct vsb *vsb)
{
        struct server *s;

        PTOK(pthread_mutex_lock(&server_mtx));
        VTAILQ_FOREACH(s, &servers, list) {
                if (s->is_dispatch)
                        continue;

                if (VUS_is(s->listen))
                        VSB_printf(vsb,
                           "backend %s { .path = \"%s\"; }\n",
                           s->name, s->listen);
                else
                        VSB_printf(vsb,
                           "backend %s { .host = \"%s\"; .port = \"%s\"; }\n",
                           s->name, s->aaddr, s->aport);
        }
        PTOK(pthread_mutex_unlock(&server_mtx));
}


/**********************************************************************
 * Generate VCL backend decls for our servers
 */

void
cmd_server_gen_haproxy_conf(struct vsb *vsb)
{
        struct server *s;

        PTOK(pthread_mutex_lock(&server_mtx));
        VTAILQ_FOREACH(s, &servers, list) {
                if (! VUS_is(s->listen))
                        VSB_printf(vsb,
                           "\n    backend be%s\n"
                           "\tserver srv%s %s:%s\n",
                           s->name + 1, s->name + 1, s->aaddr, s->aport);
                else
                        INCOMPL();
        }
        VTAILQ_FOREACH(s, &servers, list) {
                if (! VUS_is(s->listen))
                        VSB_printf(vsb,
                           "\n    frontend http%s\n"
                           "\tuse_backend be%s\n"
                           "\tbind \"fd@${fe%s}\"\n",
                           s->name + 1, s->name + 1, s->name + 1);
                else
                        INCOMPL();
        }
        PTOK(pthread_mutex_unlock(&server_mtx));
}


/**********************************************************************
 * Server command dispatch
 */

void
cmd_server(CMD_ARGS)
{
        struct server *s;

        (void)priv;

        if (av == NULL) {
                /* Reset and free */
                while (1) {
                        PTOK(pthread_mutex_lock(&server_mtx));
                        s = VTAILQ_FIRST(&servers);
                        CHECK_OBJ_ORNULL(s, SERVER_MAGIC);
                        if (s != NULL)
                                VTAILQ_REMOVE(&servers, s, list);
                        PTOK(pthread_mutex_unlock(&server_mtx));
                        if (s == NULL)
                                break;
                        if (s->run) {
                                (void)pthread_cancel(s->tp);
                                server_wait(s);
                        }
                        if (s->sock >= 0)
                                VTCP_close(&s->sock);
                        server_delete(s);
                }
                return;
        }

        AZ(strcmp(av[0], "server"));
        av++;

        PTOK(pthread_mutex_lock(&server_mtx));
        VTAILQ_FOREACH(s, &servers, list)
                if (!strcmp(s->name, av[0]))
                        break;
        PTOK(pthread_mutex_unlock(&server_mtx));
        if (s == NULL)
                s = server_new(av[0], vl);
        CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
        av++;

        for (; *av != NULL; av++) {
                if (vtc_error)
                        break;
                if (!strcmp(*av, "-wait")) {
                        if (!s->run)
                                vtc_fatal(s->vl, "Server not -started");
                        server_wait(s);
                        continue;
                }

                if (!strcmp(*av, "-break")) {
                        server_break(s);
                        continue;
                }

                /*
                 * We do an implicit -wait if people muck about with a
                 * running server.
                 */
                if (s->run)
                        server_wait(s);

                AZ(s->run);

                if (Sess_GetOpt(s->vsp, &av))
                        continue;

                if (!strcmp(*av, "-listen")) {
                        if (s->sock >= 0)
                                VTCP_close(&s->sock);
                        bprintf(s->listen, "%s", av[1]);
                        av++;
                        continue;
                }
                if (!strcmp(*av, "-start")) {
                        server_start(s);
                        continue;
                }
                if (!strcmp(*av, "-dispatch")) {
                        if (strcmp(s->name, "s0"))
                                vtc_fatal(s->vl,
                                    "server -dispatch only works on s0");
                        server_dispatch(s);
                        continue;
                }
                if (**av == '-')
                        vtc_fatal(s->vl, "Unknown server argument: %s", *av);
                s->spec = *av;
        }
}

void
init_server(void)
{
        PTOK(pthread_mutex_init(&server_mtx, NULL));
}

		varnish-cache/bin/varnishtest/vtest2/src/vtc_server.c
0		/*-
1		* Copyright (c) 2008-2010 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 <sys/socket.h>
33		#include <sys/types.h>
34		#include <sys/stat.h>
35
36		#include <stdio.h>
37		#include <stdlib.h>
38		#include <string.h>
39		#include <unistd.h>
40
41		#include "vsa.h"
42		#include "vtc.h"
43
44		#include "vtcp.h"
45		#include "vus.h"
46
47		struct server {
48		unsigned magic;
49		#define SERVER_MAGIC 0x55286619
50		char *name;
51		struct vtclog *vl;
52		VTAILQ_ENTRY(server) list;
53		struct vtc_sess *vsp;
54		char run;
55
56		char *spec;
57
58		int depth;
59		int sock;
60		int fd;
61		unsigned is_dispatch;
62		char listen[256];
63		char aaddr[VTCP_ADDRBUFSIZE];
64		char aport[VTCP_PORTBUFSIZE];
65
66		pthread_t tp;
67		};
68
69		static pthread_mutex_t server_mtx;
70
71		static VTAILQ_HEAD(, server) servers = VTAILQ_HEAD_INITIALIZER(servers);
72
73		/**********************************************************************
74		* Allocate and initialize a server
75		*/
76
77		static struct server *
78	1050	server_new(const char name, struct vtclog vl)
79		{
80		struct server *s;
81
82	1050	VTC_CHECK_NAME(vl, name, "Server", 's');
83	1050	ALLOC_OBJ(s, SERVER_MAGIC);
84	1050	AN(s);
85	1050	REPLACE(s->name, name);
86	1050	s->vl = vtc_logopen("%s", s->name);
87	1050	AN(s->vl);
88	1050	s->vsp = Sess_New(s->vl, name);
89	1050	AN(s->vsp);
90
91	1050	bprintf(s->listen, "%s", default_listen_addr);
92	1050	s->depth = 10;
93	1050	s->sock = -1;
94	1050	s->fd = -1;
95	1050	PTOK(pthread_mutex_lock(&server_mtx));
96	1050	VTAILQ_INSERT_TAIL(&servers, s, list);
97	1050	PTOK(pthread_mutex_unlock(&server_mtx));
98	1050	return (s);
99		}
100
101		/**********************************************************************
102		* Clean up a server
103		*/
104
105		static void
106	1050	server_delete(struct server *s)
107		{
108
109	1050	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
110	1050	Sess_Destroy(&s->vsp);
111	1050	macro_undef(s->vl, s->name, "addr");
112	1050	macro_undef(s->vl, s->name, "port");
113	1050	macro_undef(s->vl, s->name, "sock");
114	1050	vtc_logclose(s->vl);
115	1050	free(s->name);
116		/* XXX: MEMLEAK (?) (VSS ??) */
117	1050	FREE_OBJ(s);
118	1050	}
119
120		/**********************************************************************
121		* Server listen
122		*/
123
124		struct helper {
125		int depth;
126		const char **errp;
127		};
128
129		/* cf. VTCP_listen_on() */
130		static int v_matchproto_(vus_resolved_f)
131	52	uds_listen(void priv, const struct sockaddr_un uds)
132		{
133		int sock, e;
134	52	struct helper *hp = priv;
135
136	52	sock = VUS_bind(uds, hp->errp);
137	52	if (sock >= 0) {
138	52	if (listen(sock, hp->depth) != 0) {
139	0	e = errno;
140	0	closefd(&sock);
141	0	errno = e;
142	0	if (hp->errp != NULL)
143	0	*hp->errp = "listen(2)";
144	0	return (-1);
145		}
146	52	}
147	52	if (sock > 0) {
148	52	*hp->errp = NULL;
149	52	return (sock);
150		}
151	0	AN(*hp->errp);
152	0	return (0);
153	52	}
154
155		static void
156	52	server_listen_uds(struct server s, const char *errp)
157		{
158		mode_t m;
159		struct helper h;
160
161	52	h.depth = s->depth;
162	52	h.errp = errp;
163
164	52	errno = 0;
165	52	if (unlink(s->listen) != 0 && errno != ENOENT)
166	0	vtc_fatal(s->vl, "Could not unlink %s before bind: %s",
167	0	s->listen, strerror(errno));
168		/*
169		* Temporarily set the umask to 0 to avoid issues with
170		* permissions.
171		*/
172	52	m = umask(0);
173	52	s->sock = VUS_resolver(s->listen, uds_listen, &h, errp);
174	52	(void)umask(m);
175	52	if (*errp != NULL)
176	0	return;
177	52	assert(s->sock > 0);
178	52	macro_def(s->vl, s->name, "addr", "0.0.0.0");
179	52	macro_def(s->vl, s->name, "port", "0");
180	52	macro_def(s->vl, s->name, "sock", "%s", s->listen);
181	52	}
182
183		static void
184	1023	server_listen_tcp(struct server s, const char *errp)
185		{
186	1023	char buf[vsa_suckaddr_len];
187		const struct suckaddr *sua;
188
189	1023	s->sock = VTCP_listen_on(s->listen, "0", s->depth, errp);
190	1023	if (*errp != NULL)
191	0	return;
192	1023	assert(s->sock > 0);
193	1023	sua = VSA_getsockname(s->sock, buf, sizeof buf);
194	1023	AN(sua);
195	2046	VTCP_name(sua, s->aaddr, sizeof s->aaddr,
196	1023	s->aport, sizeof s->aport);
197
198		/* Record the actual port, and reuse it on subsequent starts */
199	1023	if (VSA_Get_Proto(sua) == AF_INET)
200	1019	bprintf(s->listen, "%s:%s", s->aaddr, s->aport);
201		else
202	4	bprintf(s->listen, "[%s]:%s", s->aaddr, s->aport);
203
204	1023	macro_def(s->vl, s->name, "addr", "%s", s->aaddr);
205	1023	macro_def(s->vl, s->name, "port", "%s", s->aport);
206	1023	macro_def(s->vl, s->name, "sock", "%s", s->listen);
207	1023	}
208
209		static void
210	1075	server_listen(struct server *s)
211		{
212		const char *err;
213
214	1075	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
215
216	1075	if (s->sock >= 0)
217	91	VTCP_close(&s->sock);
218	1075	if (VUS_is(s->listen))
219	52	server_listen_uds(s, &err);
220		else
221	1023	server_listen_tcp(s, &err);
222	1075	if (err != NULL)
223	0	vtc_fatal(s->vl,
224		"Server listen address (%s) cannot be resolved: %s",
225	0	s->listen, err);
226	1075	}
227
228		/**********************************************************************
229		* Server thread
230		*/
231
232		static int
233	1343	server_conn(void priv, struct vtclog vl)
234		{
235		struct server *s;
236		struct sockaddr_storage addr_s;
237		struct sockaddr *addr;
238		char abuf[VTCP_ADDRBUFSIZE];
239		char pbuf[VTCP_PORTBUFSIZE];
240		socklen_t l;
241		int fd;
242
243	1343	CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
244
245	1343	addr = (void*)&addr_s;
246	1343	l = sizeof addr_s;
247	1343	fd = accept(s->sock, addr, &l);
248	1343	if (fd < 0)
249	0	vtc_fatal(vl, "Accept failed: %s", strerror(errno));
250	1343	if (VUS_is(s->listen))
251	51	vtc_log(vl, 3, "accepted fd %d 0.0.0.0 0", fd);
252		else {
253	1292	VTCP_hisname(fd, abuf, sizeof abuf, pbuf, sizeof pbuf);
254	1292	vtc_log(vl, 3, "accepted fd %d %s %s", fd, abuf, pbuf);
255		}
256	1343	return (fd);
257		}
258
259		static void
260	1318	server_disc(void priv, struct vtclog vl, int *fdp)
261		{
262		int j;
263		struct server *s;
264
265	1318	CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
266	1318	vtc_log(vl, 3, "shutting fd %d (server run)", *fdp);
267	1318	j = shutdown(*fdp, SHUT_WR);
268	1318	if (!vtc_stop && !VTCP_Check(j))
269	0	vtc_fatal(vl, "Shutdown failed: %s", strerror(errno));
270	1318	VTCP_close(fdp);
271	1318	}
272
273		static void
274	1061	server_start_thread(struct server *s)
275		{
276
277	1061	s->run = 1;
278	1061	s->tp = Sess_Start_Thread(
279	1061	s,
280	1061	s->vsp,
281		server_conn,
282		server_disc,
283	1061	s->listen,
284	1061	&s->sock,
285	1061	s->spec
286		);
287	1061	}
288
289		/**********************************************************************
290		* Start the server thread
291		*/
292
293		static void
294	1061	server_start(struct server *s)
295		{
296	1061	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
297	1061	vtc_log(s->vl, 2, "Starting server");
298	1061	server_listen(s);
299	1061	vtc_log(s->vl, 1, "Listen on %s", s->listen);
300	1061	server_start_thread(s);
301	1061	}
302
303		/**********************************************************************
304		*/
305
306		static void *
307	69	server_dispatch_wrk(void *priv)
308		{
309		struct server *s;
310		struct vtclog *vl;
311		int j, fd;
312
313	69	CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
314	69	assert(s->sock < 0);
315
316	69	vl = vtc_logopen("%s", s->name);
317	69	pthread_cleanup_push(vtc_logclose, vl);
318
319	69	fd = s->fd;
320
321	69	vtc_log(vl, 3, "start with fd %d", fd);
322	69	fd = sess_process(vl, s->vsp, s->spec, fd, &s->sock, s->listen);
323	69	vtc_log(vl, 3, "shutting fd %d (server dispatch)", fd);
324	69	j = shutdown(fd, SHUT_WR);
325	69	if (!VTCP_Check(j))
326	0	vtc_fatal(vl, "Shutdown failed: %s", strerror(errno));
327	69	VTCP_close(&s->fd);
328	69	vtc_log(vl, 2, "Ending");
329	69	pthread_cleanup_pop(0);
330	69	vtc_logclose(vl);
331	69	return (NULL);
332		}
333
334		static void *
335	14	server_dispatch_thread(void *priv)
336		{
337		struct server s, s2;
338		static int sn = 1;
339		int fd;
340		char snbuf[8];
341		struct vtclog *vl;
342		struct sockaddr_storage addr_s;
343		struct sockaddr *addr;
344		socklen_t l;
345
346	14	CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
347	14	assert(s->sock >= 0);
348
349	14	vl = vtc_logopen("%s", s->name);
350	14	pthread_cleanup_push(vtc_logclose, vl);
351
352	14	vtc_log(vl, 2, "Dispatch started on %s", s->listen);
353
354	83	while (!vtc_stop) {
355	69	addr = (void*)&addr_s;
356	69	l = sizeof addr_s;
357	69	fd = accept(s->sock, addr, &l);
358	69	if (fd < 0)
359	0	vtc_fatal(vl, "Accepted failed: %s", strerror(errno));
360	69	bprintf(snbuf, "s%d", sn++);
361	69	vtc_log(vl, 3, "dispatch fd %d -> %s", fd, snbuf);
362	69	s2 = server_new(snbuf, vl);
363	69	s2->is_dispatch = 1;
364	69	s2->spec = s->spec;
365	69	bstrcpy(s2->listen, s->listen);
366	69	s2->fd = fd;
367	69	s2->run = 1;
368	69	PTOK(pthread_create(&s2->tp, NULL, server_dispatch_wrk, s2));
369		}
370	14	pthread_cleanup_pop(0);
371	14	vtc_logclose(vl);
372	14	NEEDLESS(return (NULL));
373		}
374
375		static void
376	14	server_dispatch(struct server *s)
377		{
378	14	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
379	14	server_listen(s);
380	14	vtc_log(s->vl, 2, "Starting dispatch server");
381	14	s->run = 1;
382	14	PTOK(pthread_create(&s->tp, NULL, server_dispatch_thread, s));
383	14	}
384
385		/**********************************************************************
386		* Force stop the server thread
387		*/
388
389		static void
390	3	server_break(struct server *s)
391		{
392		void *res;
393
394	3	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
395	3	vtc_log(s->vl, 2, "Breaking for server");
396	3	(void)pthread_cancel(s->tp);
397	3	PTOK(pthread_join(s->tp, &res));
398	3	VTCP_close(&s->sock);
399	3	s->tp = 0;
400	3	s->run = 0;
401	3	}
402
403		/**********************************************************************
404		* Wait for server thread to stop
405		*/
406
407		static void
408	1141	server_wait(struct server *s)
409		{
410		void *res;
411
412	1141	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
413	1141	vtc_log(s->vl, 2, "Waiting for server (%d/%d)", s->sock, s->fd);
414	1141	PTOK(pthread_join(s->tp, &res));
415	1141	if (res != NULL && !vtc_stop)
416	0	vtc_fatal(s->vl, "Server returned \"%p\"",
417	0	(char *)res);
418	1141	s->tp = 0;
419	1141	s->run = 0;
420	1141	}
421
422		/**********************************************************************
423		* Generate VCL backend decls for our servers
424		*/
425
426		void
427	876	cmd_server_gen_vcl(struct vsb *vsb)
428		{
429		struct server *s;
430
431	876	PTOK(pthread_mutex_lock(&server_mtx));
432	1870	VTAILQ_FOREACH(s, &servers, list) {
433	994	if (s->is_dispatch)
434	16	continue;
435
436	978	if (VUS_is(s->listen))
437	34	VSB_printf(vsb,
438		"backend %s { .path = \"%s\"; }\n",
439	17	s->name, s->listen);
440		else
441	1922	VSB_printf(vsb,
442		"backend %s { .host = \"%s\"; .port = \"%s\"; }\n",
443	961	s->name, s->aaddr, s->aport);
444	978	}
445	876	PTOK(pthread_mutex_unlock(&server_mtx));
446	876	}
447
448
449		/**********************************************************************
450		* Generate VCL backend decls for our servers
451		*/
452
453		void
454	1	cmd_server_gen_haproxy_conf(struct vsb *vsb)
455		{
456		struct server *s;
457
458	1	PTOK(pthread_mutex_lock(&server_mtx));
459	2	VTAILQ_FOREACH(s, &servers, list) {
460	1	if (! VUS_is(s->listen))
461	2	VSB_printf(vsb,
462		"\n backend be%s\n"
463		"\tserver srv%s %s:%s\n",
464	1	s->name + 1, s->name + 1, s->aaddr, s->aport);
465		else
466	0	INCOMPL();
467	1	}
468	2	VTAILQ_FOREACH(s, &servers, list) {
469	1	if (! VUS_is(s->listen))
470	2	VSB_printf(vsb,
471		"\n frontend http%s\n"
472		"\tuse_backend be%s\n"
473		"\tbind \"fd@${fe%s}\"\n",
474	1	s->name + 1, s->name + 1, s->name + 1);
475		else
476	0	INCOMPL();
477	1	}
478	1	PTOK(pthread_mutex_unlock(&server_mtx));
479	1	}
480
481
482		/**********************************************************************
483		* Server command dispatch
484		*/
485
486		void
487	2198	cmd_server(CMD_ARGS)
488		{
489		struct server *s;
490
491	2198	(void)priv;
492
493	2198	if (av == NULL) {
494		/* Reset and free */
495	2061	while (1) {
496	2061	PTOK(pthread_mutex_lock(&server_mtx));
497	2061	s = VTAILQ_FIRST(&servers);
498	2061	CHECK_OBJ_ORNULL(s, SERVER_MAGIC);
499	2061	if (s != NULL)