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/*++
/* NAME
/* qmqp-sink 1
/* SUMMARY
/* parallelized QMQP test server
/* SYNOPSIS
/* .fi
/* \fBqmqp-sink\fR [\fB-46cv\fR] [\fB-x \fItime\fR]
/* [\fBinet:\fR][\fIhost\fR]:\fIport\fR \fIbacklog\fR
/*
/* \fBqmqp-sink\fR [\fB-46cv\fR] [\fB-x \fItime\fR]
/* \fBunix:\fR\fIpathname\fR \fIbacklog\fR
/* DESCRIPTION
/* \fBqmqp-sink\fR listens on the named host (or address) and port.
/* It receives messages from the network and throws them away.
/* The purpose is to measure QMQP client performance, not protocol
/* compliance.
/* Connections can be accepted on IPv4 or IPv6 endpoints, or on
/* UNIX-domain sockets.
/* IPv4 and IPv6 are the default.
/* This program is the complement of the \fBqmqp-source\fR(1) program.
/*
/* Note: this is an unsupported test program. No attempt is made
/* to maintain compatibility between successive versions.
/*
/* Arguments:
/* .IP \fB-4\fR
/* Support IPv4 only. This option has no effect when
/* Postfix is built without IPv6 support.
/* .IP \fB-6\fR
/* Support IPv6 only. This option is not available when
/* Postfix is built without IPv6 support.
/* .IP \fB-c\fR
/* Display a running counter that is updated whenever a delivery
/* is completed.
/* .IP \fB-v\fR
/* Increase verbosity. Specify \fB-v -v\fR to see some of the QMQP
/* conversation.
/* .IP "\fB-x \fItime\fR"
/* Terminate after \fItime\fR seconds. This is to facilitate memory
/* leak testing.
/* SEE ALSO
/* qmqp-source(1), QMQP message generator
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*
/* Wietse Venema
/* Google, Inc.
/* 111 8th Avenue
/* New York, NY 10011, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <signal.h>
/* Utility library. */
#include <msg.h>
#include <vstring.h>
#include <vstream.h>
#include <listen.h>
#include <events.h>
#include <mymalloc.h>
#include <iostuff.h>
#include <msg_vstream.h>
#include <netstring.h>
#include <inet_proto.h>
/* Global library. */
#include <qmqp_proto.h>
#include <mail_version.h>
/* Application-specific. */
typedef struct {
VSTREAM *stream; /* client connection */
int count; /* bytes to go */
} SINK_STATE;
static int var_tmout;
static VSTRING *buffer;
static void disconnect(SINK_STATE *);
static int count_deliveries;
static int counter;
/* send_reply - finish conversation */
static void send_reply(SINK_STATE *state)
{
vstring_sprintf(buffer, "%cOk", QMQP_STAT_OK);
NETSTRING_PUT_BUF(state->stream, buffer);
netstring_fflush(state->stream);
if (count_deliveries) {
counter++;
vstream_printf("%d\r", counter);
vstream_fflush(VSTREAM_OUT);
}
disconnect(state);
}
/* read_data - read over-all netstring data */
static void read_data(int unused_event, void *context)
{
SINK_STATE *state = (SINK_STATE *) context;
int fd = vstream_fileno(state->stream);
int count;
/*
* Refill the VSTREAM buffer, if necessary.
*/
if (VSTREAM_GETC(state->stream) == VSTREAM_EOF)
netstring_except(state->stream, vstream_ftimeout(state->stream) ?
NETSTRING_ERR_TIME : NETSTRING_ERR_EOF);
state->count--;
/*
* Flush the VSTREAM buffer. As documented, vstream_fseek() discards
* unread input.
*/
if ((count = vstream_peek(state->stream)) > 0) {
state->count -= count;
if (state->count <= 0) {
send_reply(state);
return;
}
vstream_fpurge(state->stream, VSTREAM_PURGE_BOTH);
}
/*
* Do not block while waiting for the arrival of more data.
*/
event_disable_readwrite(fd);
event_enable_read(fd, read_data, context);
}
/* read_length - read over-all netstring length */
static void read_length(int event, void *context)
{
SINK_STATE *state = (SINK_STATE *) context;
switch (vstream_setjmp(state->stream)) {
default:
msg_panic("unknown error reading input");
case NETSTRING_ERR_TIME:
msg_panic("attempt to read non-readable socket");
/* NOTREACHED */
case NETSTRING_ERR_EOF:
msg_warn("lost connection");
disconnect(state);
return;
case NETSTRING_ERR_FORMAT:
msg_warn("netstring format error");
disconnect(state);
return;
case NETSTRING_ERR_SIZE:
msg_warn("netstring size error");
disconnect(state);
return;
/*
* Include the netstring terminator in the read byte count. This
* violates abstractions.
*/
case 0:
state->count = netstring_get_length(state->stream) + 1;
read_data(event, context);
return;
}
}
/* disconnect - handle disconnection events */
static void disconnect(SINK_STATE *state)
{
event_disable_readwrite(vstream_fileno(state->stream));
vstream_fclose(state->stream);
myfree((void *) state);
}
/* connect_event - handle connection events */
static void connect_event(int unused_event, void *context)
{
int sock = CAST_ANY_PTR_TO_INT(context);
struct sockaddr_storage ss;
SOCKADDR_SIZE len = sizeof(ss);
struct sockaddr *sa = (struct sockaddr *) &ss;
SINK_STATE *state;
int fd;
if ((fd = accept(sock, sa, &len)) >= 0) {
if (msg_verbose)
msg_info("connect (%s)",
#ifdef AF_LOCAL
sa->sa_family == AF_LOCAL ? "AF_LOCAL" :
#else
sa->sa_family == AF_UNIX ? "AF_UNIX" :
#endif
sa->sa_family == AF_INET ? "AF_INET" :
#ifdef AF_INET6
sa->sa_family == AF_INET6 ? "AF_INET6" :
#endif
"unknown protocol family");
non_blocking(fd, NON_BLOCKING);
state = (SINK_STATE *) mymalloc(sizeof(*state));
state->stream = vstream_fdopen(fd, O_RDWR);
vstream_tweak_sock(state->stream);
netstring_setup(state->stream, var_tmout);
event_enable_read(fd, read_length, (void *) state);
}
}
/* terminate - voluntary exit */
static void terminate(int unused_event, void *unused_context)
{
exit(0);
}
/* usage - explain */
static void usage(char *myname)
{
msg_fatal("usage: %s [-cv] [-x time] [host]:port backlog", myname);
}
MAIL_VERSION_STAMP_DECLARE;
int main(int argc, char **argv)
{
int sock;
int backlog;
int ch;
int ttl;
const char *protocols = INET_PROTO_NAME_ALL;
/*
* Fingerprint executables and core dumps.
*/
MAIL_VERSION_STAMP_ALLOCATE;
/*
* Fix 20051207.
*/
signal(SIGPIPE, SIG_IGN);
/*
* Initialize diagnostics.
*/
msg_vstream_init(argv[0], VSTREAM_ERR);
/*
* Parse JCL.
*/
while ((ch = GETOPT(argc, argv, "46cvx:")) > 0) {
switch (ch) {
case '4':
protocols = INET_PROTO_NAME_IPV4;
break;
case '6':
protocols = INET_PROTO_NAME_IPV6;
break;
case 'c':
count_deliveries++;
break;
case 'v':
msg_verbose++;
break;
case 'x':
if ((ttl = atoi(optarg)) <= 0)
usage(argv[0]);
event_request_timer(terminate, (void *) 0, ttl);
break;
default:
usage(argv[0]);
}
}
if (argc - optind != 2)
usage(argv[0]);
if ((backlog = atoi(argv[optind + 1])) <= 0)
usage(argv[0]);
/*
* Initialize.
*/
(void) inet_proto_init("protocols", protocols);
buffer = vstring_alloc(1024);
if (strncmp(argv[optind], "unix:", 5) == 0) {
sock = unix_listen(argv[optind] + 5, backlog, BLOCKING);
} else {
if (strncmp(argv[optind], "inet:", 5) == 0)
argv[optind] += 5;
sock = inet_listen(argv[optind], backlog, BLOCKING);
}
/*
* Start the event handler.
*/
event_enable_read(sock, connect_event, CAST_INT_TO_VOID_PTR(sock));
for (;;)
event_loop(-1);
}