+++ /dev/null
-diff --git a/server/listen.c b/server/listen.c
-index 1d9be83..f5f7754 100644
---- a/server/listen.c
-+++ b/server/listen.c
-@@ -34,6 +34,10 @@
- #include <unistd.h>
- #endif
-
-+#ifdef HAVE_SYSTEMD
-+#include <systemd/sd-daemon.h>
-+#endif
-+
- /* we know core's module_index is 0 */
- #undef APLOG_MODULE_INDEX
- #define APLOG_MODULE_INDEX AP_CORE_MODULE_INDEX
-@@ -59,9 +63,12 @@ static int ap_listenbacklog;
- static int ap_listencbratio;
- static int send_buffer_size;
- static int receive_buffer_size;
-+#ifdef HAVE_SYSTEMD
-+static int use_systemd = -1;
-+#endif
-
- /* TODO: make_sock is just begging and screaming for APR abstraction */
--static apr_status_t make_sock(apr_pool_t *p, ap_listen_rec *server)
-+static apr_status_t make_sock(apr_pool_t *p, ap_listen_rec *server, int do_bind_listen)
- {
- apr_socket_t *s = server->sd;
- int one = 1;
-@@ -94,20 +101,6 @@ static apr_status_t make_sock(apr_pool_t *p, ap_listen_rec *server)
- return stat;
- }
-
--#if APR_HAVE_IPV6
-- if (server->bind_addr->family == APR_INET6) {
-- stat = apr_socket_opt_set(s, APR_IPV6_V6ONLY, v6only_setting);
-- if (stat != APR_SUCCESS && stat != APR_ENOTIMPL) {
-- ap_log_perror(APLOG_MARK, APLOG_CRIT, stat, p, APLOGNO(00069)
-- "make_sock: for address %pI, apr_socket_opt_set: "
-- "(IPV6_V6ONLY)",
-- server->bind_addr);
-- apr_socket_close(s);
-- return stat;
-- }
-- }
--#endif
--
- /*
- * To send data over high bandwidth-delay connections at full
- * speed we must force the TCP window to open wide enough to keep the
-@@ -169,21 +162,37 @@ static apr_status_t make_sock(apr_pool_t *p, ap_listen_rec *server)
- }
- #endif
-
-- if ((stat = apr_socket_bind(s, server->bind_addr)) != APR_SUCCESS) {
-- ap_log_perror(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, stat, p, APLOGNO(00072)
-- "make_sock: could not bind to address %pI",
-- server->bind_addr);
-- apr_socket_close(s);
-- return stat;
-- }
-+ if (do_bind_listen) {
-+#if APR_HAVE_IPV6
-+ if (server->bind_addr->family == APR_INET6) {
-+ stat = apr_socket_opt_set(s, APR_IPV6_V6ONLY, v6only_setting);
-+ if (stat != APR_SUCCESS && stat != APR_ENOTIMPL) {
-+ ap_log_perror(APLOG_MARK, APLOG_CRIT, stat, p, APLOGNO(00069)
-+ "make_sock: for address %pI, apr_socket_opt_set: "
-+ "(IPV6_V6ONLY)",
-+ server->bind_addr);
-+ apr_socket_close(s);
-+ return stat;
-+ }
-+ }
-+#endif
-
-- if ((stat = apr_socket_listen(s, ap_listenbacklog)) != APR_SUCCESS) {
-- ap_log_perror(APLOG_MARK, APLOG_STARTUP|APLOG_ERR, stat, p, APLOGNO(00073)
-- "make_sock: unable to listen for connections "
-- "on address %pI",
-- server->bind_addr);
-- apr_socket_close(s);
-- return stat;
-+ if ((stat = apr_socket_bind(s, server->bind_addr)) != APR_SUCCESS) {
-+ ap_log_perror(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, stat, p, APLOGNO(00072)
-+ "make_sock: could not bind to address %pI",
-+ server->bind_addr);
-+ apr_socket_close(s);
-+ return stat;
-+ }
-+
-+ if ((stat = apr_socket_listen(s, ap_listenbacklog)) != APR_SUCCESS) {
-+ ap_log_perror(APLOG_MARK, APLOG_STARTUP|APLOG_ERR, stat, p, APLOGNO(00073)
-+ "make_sock: unable to listen for connections "
-+ "on address %pI",
-+ server->bind_addr);
-+ apr_socket_close(s);
-+ return stat;
-+ }
- }
-
- #ifdef WIN32
-@@ -277,6 +286,124 @@ static apr_status_t close_listeners_on_exec(void *v)
- return APR_SUCCESS;
- }
-
-+
-+#ifdef HAVE_SYSTEMD
-+
-+static int find_systemd_socket(process_rec * process, apr_port_t port) {
-+ int fdcount, fd;
-+ int sdc = sd_listen_fds(0);
-+
-+ if (sdc < 0) {
-+ ap_log_perror(APLOG_MARK, APLOG_CRIT, sdc, process->pool, APLOGNO(02486)
-+ "find_systemd_socket: Error parsing enviroment, sd_listen_fds returned %d",
-+ sdc);
-+ return -1;
-+ }
-+
-+ if (sdc == 0) {
-+ ap_log_perror(APLOG_MARK, APLOG_CRIT, sdc, process->pool, APLOGNO(02487)
-+ "find_systemd_socket: At least one socket must be set.");
-+ return -1;
-+ }
-+
-+ fdcount = atoi(getenv("LISTEN_FDS"));
-+ for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + fdcount; fd++) {
-+ if (sd_is_socket_inet(fd, 0, 0, -1, port) > 0) {
-+ return fd;
-+ }
-+ }
-+
-+ return -1;
-+}
-+
-+static apr_status_t alloc_systemd_listener(process_rec * process,
-+ int fd, const char *proto,
-+ ap_listen_rec **out_rec)
-+{
-+ apr_status_t rv;
-+ struct sockaddr sa;
-+ socklen_t len = sizeof(struct sockaddr);
-+ apr_os_sock_info_t si;
-+ ap_listen_rec *rec;
-+ *out_rec = NULL;
-+
-+ memset(&si, 0, sizeof(si));
-+
-+ rv = getsockname(fd, &sa, &len);
-+
-+ if (rv != 0) {
-+ rv = apr_get_netos_error();
-+ ap_log_perror(APLOG_MARK, APLOG_CRIT, rv, process->pool, APLOGNO(02489)
-+ "getsockname on %d failed.", fd);
-+ return rv;
-+ }
-+
-+ si.os_sock = &fd;
-+ si.family = sa.sa_family;
-+ si.local = &sa;
-+ si.type = SOCK_STREAM;
-+ si.protocol = APR_PROTO_TCP;
-+
-+ rec = apr_palloc(process->pool, sizeof(ap_listen_rec));
-+ rec->active = 0;
-+ rec->next = 0;
-+
-+
-+ rv = apr_os_sock_make(&rec->sd, &si, process->pool);
-+ if (rv != APR_SUCCESS) {
-+ ap_log_perror(APLOG_MARK, APLOG_CRIT, rv, process->pool, APLOGNO(02490)
-+ "apr_os_sock_make on %d failed.", fd);
-+ return rv;
-+ }
-+
-+ rv = apr_socket_addr_get(&rec->bind_addr, APR_LOCAL, rec->sd);
-+ if (rv != APR_SUCCESS) {
-+ ap_log_perror(APLOG_MARK, APLOG_CRIT, rv, process->pool, APLOGNO(02491)
-+ "apr_socket_addr_get on %d failed.", fd);
-+ return rv;
-+ }
-+
-+ rec->protocol = apr_pstrdup(process->pool, proto);
-+
-+ *out_rec = rec;
-+
-+ return make_sock(process->pool, rec, 0);
-+}
-+
-+static const char *set_systemd_listener(process_rec *process, apr_port_t port,
-+ const char *proto)
-+{
-+ ap_listen_rec *last, *new;
-+ apr_status_t rv;
-+ int fd = find_systemd_socket(process, port);
-+ if (fd < 0) {
-+ return "Systemd socket activation is used, but this port is not "
-+ "configured in systemd";
-+ }
-+
-+ last = ap_listeners;
-+ while (last && last->next) {
-+ last = last->next;
-+ }
-+
-+ rv = alloc_systemd_listener(process, fd, proto, &new);
-+ if (rv != APR_SUCCESS) {
-+ return "Failed to setup socket passed by systemd using socket activation";
-+ }
-+
-+ if (last == NULL) {
-+ ap_listeners = last = new;
-+ }
-+ else {
-+ last->next = new;
-+ last = new;
-+ }
-+
-+ return NULL;
-+}
-+
-+#endif /* HAVE_SYSTEMD */
-+
- static const char *alloc_listener(process_rec *process, char *addr,
- apr_port_t port, const char* proto,
- void *slave)
-@@ -479,7 +606,7 @@ static int open_listeners(apr_pool_t *pool)
- }
- }
- #endif
-- if (make_sock(pool, lr) == APR_SUCCESS) {
-+ if (make_sock(pool, lr, 1) == APR_SUCCESS) {
- ++num_open;
- }
- else {
-@@ -591,8 +718,28 @@ AP_DECLARE(int) ap_setup_listeners(server_rec *s)
- }
- }
-
-- if (open_listeners(s->process->pool)) {
-- return 0;
-+#ifdef HAVE_SYSTEMD
-+ if (use_systemd) {
-+ const char *userdata_key = "ap_open_systemd_listeners";
-+ void *data;
-+ /* clear the enviroment on our second run
-+ * so that none of our future children get confused.
-+ */
-+ apr_pool_userdata_get(&data, userdata_key, s->process->pool);
-+ if (!data) {
-+ apr_pool_userdata_set((const void *)1, userdata_key,
-+ apr_pool_cleanup_null, s->process->pool);
-+ }
-+ else {
-+ sd_listen_fds(1);
-+ }
-+ }
-+ else
-+#endif
-+ {
-+ if (open_listeners(s->process->pool)) {
-+ return 0;
-+ }
- }
-
- for (lr = ap_listeners; lr; lr = lr->next) {
-@@ -682,7 +829,7 @@ AP_DECLARE(apr_status_t) ap_duplicate_listeners(apr_pool_t *p, server_rec *s,
- duplr->bind_addr);
- return stat;
- }
-- make_sock(p, duplr);
-+ make_sock(p, duplr, 1);
- #if AP_NONBLOCK_WHEN_MULTI_LISTEN
- use_nonblock = (ap_listeners && ap_listeners->next);
- stat = apr_socket_opt_set(duplr->sd, APR_SO_NONBLOCK, use_nonblock);
-@@ -809,6 +956,11 @@ AP_DECLARE_NONSTD(const char *) ap_set_listener(cmd_parms *cmd, void *dummy,
- if (argc < 1 || argc > 2) {
- return "Listen requires 1 or 2 arguments.";
- }
-+#ifdef HAVE_SYSTEMD
-+ if (use_systemd == -1) {
-+ use_systemd = sd_listen_fds(0) > 0;
-+ }
-+#endif
-
- rv = apr_parse_addr_port(&host, &scope_id, &port, argv[0], cmd->pool);
- if (rv != APR_SUCCESS) {
-@@ -840,6 +992,12 @@ AP_DECLARE_NONSTD(const char *) ap_set_listener(cmd_parms *cmd, void *dummy,
- ap_str_tolower(proto);
- }
-
-+#ifdef HAVE_SYSTEMD
-+ if (use_systemd) {
-+ return set_systemd_listener(cmd->server->process, port, proto);
-+ }
-+#endif
-+
- return alloc_listener(cmd->server->process, host, port, proto, NULL);
- }
-
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