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", *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", 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 implict -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/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 =
72		VTAILQ_HEAD_INITIALIZER(servers);
73
74		/**********************************************************************
75		* Allocate and initialize a server
76		*/
77
78		static struct server *
79	41541	server_new(const char name, struct vtclog vl)
80		{
81		struct server *s;
82
83	41541	VTC_CHECK_NAME(vl, name, "Server", 's');
84	41541	ALLOC_OBJ(s, SERVER_MAGIC);
85	41541	AN(s);
86	41541	REPLACE(s->name, name);
87	41541	s->vl = vtc_logopen("%s", s->name);
88	41541	AN(s->vl);
89	41541	s->vsp = Sess_New(s->vl, name);
90	41541	AN(s->vsp);
91
92	41541	bprintf(s->listen, "%s", default_listen_addr);
93	41541	s->depth = 10;
94	41541	s->sock = -1;
95	41541	s->fd = -1;
96	41541	PTOK(pthread_mutex_lock(&server_mtx));
97	41541	VTAILQ_INSERT_TAIL(&servers, s, list);
98	41541	PTOK(pthread_mutex_unlock(&server_mtx));
99	41541	return (s);
100		}
101
102		/**********************************************************************
103		* Clean up a server
104		*/
105
106		static void
107	41541	server_delete(struct server *s)
108		{
109
110	41541	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
111	41541	Sess_Destroy(&s->vsp);
112	41541	macro_undef(s->vl, s->name, "addr");
113	41541	macro_undef(s->vl, s->name, "port");
114	41541	macro_undef(s->vl, s->name, "sock");
115	41541	vtc_logclose(s->vl);
116	41541	free(s->name);
117		/* XXX: MEMLEAK (?) (VSS ??) */
118	41541	FREE_OBJ(s);
119	41541	}
120
121		/**********************************************************************
122		* Server listen
123		*/
124
125		struct helper {
126		int depth;
127		const char **errp;
128		};
129
130		/* cf. VTCP_listen_on() */
131		static int v_matchproto_(vus_resolved_f)
132	2360	uds_listen(void priv, const struct sockaddr_un uds)
133		{
134		int sock, e;
135	2360	struct helper *hp = priv;
136
137	2360	sock = VUS_bind(uds, hp->errp);
138	2360	if (sock >= 0) {
139	2360	if (listen(sock, hp->depth) != 0) {
140	0	e = errno;
141	0	closefd(&sock);
142	0	errno = e;
143	0	if (hp->errp != NULL)
144	0	*hp->errp = "listen(2)";
145	0	return (-1);
146		}
147	2360	}
148	2360	if (sock > 0) {
149	2360	*hp->errp = NULL;
150	2360	return (sock);
151		}
152	0	AN(*hp->errp);
153	0	return (0);
154	2360	}
155
156		static void
157	2360	server_listen_uds(struct server s, const char *errp)
158		{
159		mode_t m;
160		struct helper h;
161
162	2360	h.depth = s->depth;
163	2360	h.errp = errp;
164
165	2360	errno = 0;
166	2360	if (unlink(s->listen) != 0 && errno != ENOENT)
167	0	vtc_fatal(s->vl, "Could not unlink %s before bind: %s",
168	0	s->listen, strerror(errno));
169		/*
170		* Temporarily set the umask to 0 to avoid issues with
171		* permissions.
172		*/
173	2360	m = umask(0);
174	2360	s->sock = VUS_resolver(s->listen, uds_listen, &h, errp);
175	2360	(void)umask(m);
176	2360	if (*errp != NULL)
177	0	return;
178	2360	assert(s->sock > 0);
179	2360	macro_def(s->vl, s->name, "addr", "0.0.0.0");
180	2360	macro_def(s->vl, s->name, "port", "0");
181	2360	macro_def(s->vl, s->name, "sock", "%s", s->listen);
182	2360	}
183
184		static void
185	40240	server_listen_tcp(struct server s, const char *errp)
186		{
187	40240	char buf[vsa_suckaddr_len];
188		const struct suckaddr *sua;
189
190	40240	s->sock = VTCP_listen_on(s->listen, "0", s->depth, errp);
191	40240	if (*errp != NULL)
192	0	return;
193	40240	assert(s->sock > 0);
194	40240	sua = VSA_getsockname(s->sock, buf, sizeof buf);
195	40240	AN(sua);
196	80480	VTCP_name(sua, s->aaddr, sizeof s->aaddr,
197	40240	s->aport, sizeof s->aport);
198
199		/* Record the actual port, and reuse it on subsequent starts */
200	40240	if (VSA_Get_Proto(sua) == AF_INET)
201	40080	bprintf(s->listen, "%s:%s", s->aaddr, s->aport);
202		else
203	160	bprintf(s->listen, "[%s]:%s", s->aaddr, s->aport);
204
205	40240	macro_def(s->vl, s->name, "addr", "%s", s->aaddr);
206	40240	macro_def(s->vl, s->name, "port", "%s", s->aport);
207	40240	macro_def(s->vl, s->name, "sock", "%s", s->listen);
208	40240	}
209
210		static void
211	42600	server_listen(struct server *s)
212		{
213		const char *err;
214
215	42600	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
216
217	42600	if (s->sock >= 0)
218	3560	VTCP_close(&s->sock);
219	42600	if (VUS_is(s->listen))
220	2360	server_listen_uds(s, &err);
221		else
222	40240	server_listen_tcp(s, &err);
223	42600	if (err != NULL)
224	0	vtc_fatal(s->vl,
225		"Server listen address (%s) cannot be resolved: %s",
226	0	s->listen, err);
227	42600	}
228
229		/**********************************************************************
230		* Server thread
231		*/
232
233		static int
234	53330	server_conn(void priv, struct vtclog vl)
235		{
236		struct server *s;
237		struct sockaddr_storage addr_s;
238		struct sockaddr *addr;
239		char abuf[VTCP_ADDRBUFSIZE];
240		char pbuf[VTCP_PORTBUFSIZE];
241		socklen_t l;
242		int fd;
243
244	53330	CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
245
246	53330	addr = (void*)&addr_s;
247	53330	l = sizeof addr_s;
248	53330	fd = accept(s->sock, addr, &l);
249	53330	if (fd < 0)
250	0	vtc_fatal(vl, "Accept failed: %s", strerror(errno));
251	53330	if (VUS_is(s->listen))
252	2360	vtc_log(vl, 3, "accepted fd %d 0.0.0.0 0", fd);
253		else {
254	50970	VTCP_hisname(fd, abuf, sizeof abuf, pbuf, sizeof pbuf);
255	50970	vtc_log(vl, 3, "accepted fd %d %s %s", fd, abuf, pbuf);
256		}
257	53330	return (fd);
258		}
259
260		static void
261	52367	server_disc(void priv, struct vtclog vl, int *fdp)
262		{
263		int j;
264		struct server *s;
265
266	52367	CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
267	52367	vtc_log(vl, 3, "shutting fd %d", *fdp);
268	52367	j = shutdown(*fdp, SHUT_WR);
269	52367	if (!vtc_stop && !VTCP_Check(j))
270	0	vtc_fatal(vl, "Shutdown failed: %s", strerror(errno));
271	52373	VTCP_close(fdp);
272	52373	}
273
274		static void
275	42080	server_start_thread(struct server *s)
276		{
277
278	42080	s->run = 1;
279	42080	s->tp = Sess_Start_Thread(
280	42080	s,
281	42080	s->vsp,
282		server_conn,
283		server_disc,
284	42080	s->listen,
285	42080	&s->sock,
286	42080	s->spec
287		);
288	42080	}
289
290		/**********************************************************************
291		* Start the server thread
292		*/
293
294		static void
295	42080	server_start(struct server *s)
296		{
297	42080	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
298	42080	vtc_log(s->vl, 2, "Starting server");
299	42080	server_listen(s);
300	42080	vtc_log(s->vl, 1, "Listen on %s", s->listen);
301	42080	server_start_thread(s);
302	42080	}
303
304		/**********************************************************************
305		*/
306
307		static void *
308	2621	server_dispatch_wrk(void *priv)
309		{
310		struct server *s;
311		struct vtclog *vl;
312		int j, fd;
313
314	2621	CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
315	2621	assert(s->sock < 0);
316
317	2621	vl = vtc_logopen("%s", s->name);
318	2621	pthread_cleanup_push(vtc_logclose, vl);
319
320	2621	fd = s->fd;
321
322	2621	vtc_log(vl, 3, "start with fd %d", fd);
323	2621	fd = sess_process(vl, s->vsp, s->spec, fd, &s->sock, s->listen);
324	2621	vtc_log(vl, 3, "shutting fd %d", fd);
325	2621	j = shutdown(fd, SHUT_WR);
326	2621	if (!VTCP_Check(j))
327	0	vtc_fatal(vl, "Shutdown failed: %s", strerror(errno));
328	2621	VTCP_close(&s->fd);
329	2621	vtc_log(vl, 2, "Ending");
330	2621	pthread_cleanup_pop(0);
331	2621	vtc_logclose(vl);
332	2621	return (NULL);
333		}
334
335		static void *
336	520	server_dispatch_thread(void *priv)
337		{
338		struct server s, s2;
339		static int sn = 1;
340		int fd;
341		char snbuf[8];
342		struct vtclog *vl;
343		struct sockaddr_storage addr_s;
344		struct sockaddr *addr;
345		socklen_t l;
346
347	520	CAST_OBJ_NOTNULL(s, priv, SERVER_MAGIC);
348	520	assert(s->sock >= 0);
349
350	520	vl = vtc_logopen("%s", s->name);
351	520	pthread_cleanup_push(vtc_logclose, vl);
352
353	520	vtc_log(vl, 2, "Dispatch started on %s", s->listen);
354
355	3141	while (!vtc_stop) {
356	2621	addr = (void*)&addr_s;
357	2621	l = sizeof addr_s;
358	2621	fd = accept(s->sock, addr, &l);
359	2621	if (fd < 0)
360	0	vtc_fatal(vl, "Accepted failed: %s", strerror(errno));
361	2621	bprintf(snbuf, "s%d", sn++);
362	2621	vtc_log(vl, 3, "dispatch fd %d -> %s", fd, snbuf);
363	2621	s2 = server_new(snbuf, vl);
364	2621	s2->is_dispatch = 1;
365	2621	s2->spec = s->spec;
366	2621	bstrcpy(s2->listen, s->listen);
367	2621	s2->fd = fd;
368	2621	s2->run = 1;
369	2621	PTOK(pthread_create(&s2->tp, NULL, server_dispatch_wrk, s2));
370		}
371	520	pthread_cleanup_pop(0);
372	520	vtc_logclose(vl);
373	520	NEEDLESS(return (NULL));
374		}
375
376		static void
377	520	server_dispatch(struct server *s)
378		{
379	520	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
380	520	server_listen(s);
381	520	vtc_log(s->vl, 2, "Starting dispatch server");
382	520	s->run = 1;
383	520	PTOK(pthread_create(&s->tp, NULL, server_dispatch_thread, s));
384	520	}
385
386		/**********************************************************************
387		* Force stop the server thread
388		*/
389
390		static void
391	120	server_break(struct server *s)
392		{
393		void *res;
394
395	120	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
396	120	vtc_log(s->vl, 2, "Breaking for server");
397	120	(void)pthread_cancel(s->tp);
398	120	PTOK(pthread_join(s->tp, &res));
399	120	VTCP_close(&s->sock);
400	120	s->tp = 0;
401	120	s->run = 0;
402	120	}
403
404		/**********************************************************************
405		* Wait for server thread to stop
406		*/
407
408		static void
409	45101	server_wait(struct server *s)
410		{
411		void *res;
412
413	45101	CHECK_OBJ_NOTNULL(s, SERVER_MAGIC);
414	45101	vtc_log(s->vl, 2, "Waiting for server (%d/%d)", s->sock, s->fd);
415	45101	PTOK(pthread_join(s->tp, &res));
416	45101	if (res != NULL && !vtc_stop)
417	0	vtc_fatal(s->vl, "Server returned \"%p\"",
418	0	(char *)res);
419	45101	s->tp = 0;
420	45101	s->run = 0;
421	45101	}
422
423		/**********************************************************************
424		* Generate VCL backend decls for our servers
425		*/
426
427		void
428	34000	cmd_server_gen_vcl(struct vsb *vsb)
429		{
430		struct server *s;
431
432	34000	PTOK(pthread_mutex_lock(&server_mtx));
433	72720	VTAILQ_FOREACH(s, &servers, list) {
434	38720	if (s->is_dispatch)
435	640	continue;
436
437	38080	if (VUS_is(s->listen))
438	1360	VSB_printf(vsb,
439		"backend %s { .path = \"%s\"; }\n",
440	680	s->name, s->listen);
441		else
442	74800	VSB_printf(vsb,
443		"backend %s { .host = \"%s\"; .port = \"%s\"; }\n",
444	37400	s->name, s->aaddr, s->aport);
445	38080	}
446	34000	PTOK(pthread_mutex_unlock(&server_mtx));
447	34000	}
448
449
450		/**********************************************************************
451		* Generate VCL backend decls for our servers
452		*/
453
454		void
455	40	cmd_server_gen_haproxy_conf(struct vsb *vsb)
456		{
457		struct server *s;
458
459	40	PTOK(pthread_mutex_lock(&server_mtx));
460	80	VTAILQ_FOREACH(s, &servers, list) {
461	40	if (! VUS_is(s->listen))
462	80	VSB_printf(vsb,
463		"\n backend be%s\n"
464		"\tserver srv%s %s:%s\n",
465	40	s->name + 1, s->name + 1, s->aaddr, s->aport);
466		else
467	0	INCOMPL();
468	40	}
469	80	VTAILQ_FOREACH(s, &servers, list) {
470	40	if (! VUS_is(s->listen))
471	80	VSB_printf(vsb,
472		"\n frontend http%s\n"
473		"\tuse_backend be%s\n"
474		"\tbind \"fd@${fe%s}\"\n",
475	40	s->name + 1, s->name + 1, s->name + 1);
476		else
477	0	INCOMPL();
478	40	}
479	40	PTOK(pthread_mutex_unlock(&server_mtx));
480	40	}
481
482
483		/**********************************************************************
484		* Server command dispatch
485		*/
486
487		void
488	87560	cmd_server(CMD_ARGS)
489		{
490		struct server *s;
491
492	87560	(void)priv;
493
494	87560	if (av == NULL) {
495		/* Reset and free */
496	81181	while (1) {
497	81181	PTOK(pthread_mutex_lock(&server_mtx));
498	81181	s = VTAILQ_FIRST(&servers);
499	81181	CHECK_OBJ_ORNULL(s, SERVER_MAGIC);