1 files changed, 98 insertions, 0 deletions
diff --git a/src/global/mail_trigger.c b/src/global/mail_trigger.c
new file mode 100644
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+++ b/src/global/mail_trigger.c
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+/*++
+/* NAME
+/*	mail_trigger 3
+/* SUMMARY
+/*	trigger a mail service
+/* SYNOPSIS
+/*	#include <mail_proto.h>
+/*
+/*	int	mail_trigger(class, service, request, length)
+/*	const char *class;
+/*	const char *service;
+/*	const char *request;
+/*	ssize_t	length;
+/* DESCRIPTION
+/*	mail_trigger() wakes up the specified mail subsystem, by
+/*	sending it the specified request. In the case of non-FIFO
+/*	server endpoints, a short-running program should invoke
+/*	event_drain() to ensure proper request delivery.
+/*
+/*	Arguments:
+/* .IP class
+/*	Name of a class of local transport channel endpoints,
+/*	either \fIpublic\fR (accessible by any local user) or
+/*	\fIprivate\fR (administrative access only).
+/* .IP service
+/*	The name of a local transport endpoint within the named class.
+/* .IP request
+/*	A string. The list of valid requests is service specific.
+/* .IP length
+/*	The length of the request string.
+/* DIAGNOSTICS
+/*	The result is -1 in case of problems, 0 otherwise.
+/*	Warnings are logged.
+/* BUGS
+/*	Works with FIFO or UNIX-domain services only.
+/*
+/*	Should use master.cf to find out what transport to use.
+/* SEE ALSO
+/*	fifo_trigger(3) trigger a FIFO-based service
+/*	unix_trigger(3) trigger a UNIX_domain service
+/* 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
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <sys/stat.h>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <mymalloc.h>
+#include <iostuff.h>
+#include <trigger.h>
+#include <warn_stat.h>
+
+/* Global library. */
+
+#include "mail_params.h"
+#include "mail_proto.h"
+
+/* mail_trigger - trigger a service */
+
+int     mail_trigger(const char *class, const char *service,
+		             const char *req_buf, ssize_t req_len)
+{
+    struct stat st;
+    char   *path;
+    int     status;
+
+    /*
+     * XXX Some systems cannot tell the difference between a named pipe
+     * (fifo) or a UNIX-domain socket. So we may have to try both.
+     */
+    path = mail_pathname(class, service);
+    if ((status = stat(path, &st)) < 0) {
+	 msg_warn("unable to look up %s: %m", path);
+    } else if (S_ISFIFO(st.st_mode)) {
+	status = fifo_trigger(path, req_buf, req_len, var_trigger_timeout);
+	if (status < 0 && S_ISSOCK(st.st_mode))
+	    status = LOCAL_TRIGGER(path, req_buf, req_len, var_trigger_timeout);
+    } else if (S_ISSOCK(st.st_mode)) {
+	status = LOCAL_TRIGGER(path, req_buf, req_len, var_trigger_timeout);
+    } else {
+	msg_warn("%s is not a socket or a fifo", path);
+	status = -1;
+    }
+    myfree(path);
+    return (status);
+}