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diff --git a/src/smtpstone/qmqp-sink.c b/src/smtpstone/qmqp-sink.c
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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);
+}
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