Adding upstream version 3.5.24.upstream/3.5.24

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 163 insertions, 0 deletions

diff --git a/src/qmgr/qmgr_defer.c b/src/qmgr/qmgr_defer.c
new file mode 100644
index 0000000..79615cc
--- /dev/null
+++ b/src/qmgr/qmgr_defer.c
@@ -0,0 +1,163 @@
+/*++
+/* NAME
+/*	qmgr_defer
+/* SUMMARY
+/*	deal with mail that must be delivered later
+/* SYNOPSIS
+/*	#include "qmgr.h"
+/*
+/*	void	qmgr_defer_recipient(message, recipient, dsn)
+/*	QMGR_MESSAGE *message;
+/*	RECIPIENT *recipient;
+/*	DSN	*dsn;
+/*
+/*	void	qmgr_defer_todo(queue, dsn)
+/*	QMGR_QUEUE *queue;
+/*	DSN	*dsn;
+/*
+/*	void	qmgr_defer_transport(transport, dsn)
+/*	QMGR_TRANSPORT *transport;
+/*	DSN	*dsn;
+/* DESCRIPTION
+/*	qmgr_defer_recipient() defers delivery of the named message to
+/*	the named recipient. It updates the message structure and writes
+/*	a log entry.
+/*
+/*	qmgr_defer_todo() iterates over all "todo" deliveries queued for
+/*	the named site, and calls qmgr_defer_recipient() for each recipient
+/*	found.  Side effects caused by qmgr_entry_done(), qmgr_queue_done(),
+/*	and by qmgr_active_done(): in-core queue entries will disappear,
+/*	in-core queues may disappear, in-core and on-disk messages may
+/*	disappear, bounces may be sent, new in-core queues, queue entries
+/*	and recipients may appear.
+/*
+/*	qmgr_defer_transport() calls qmgr_defer_todo() for each queue
+/*	that depends on the named transport. See there for side effects.
+/*
+/*	Arguments:
+/* .IP recipient
+/*	A recipient address; used for logging purposes, and for updating
+/*	the message-specific \fIdefer\fR log.
+/* .IP queue
+/*	Specifies a queue with delivery requests for a specific next-hop
+/*	host (or local user).
+/* .IP transport
+/*	Specifies a message delivery transport.
+/* .IP dsn
+/*	See dsn(3).
+/* BUGS
+/*	The side effects of calling this routine are quite dramatic.
+/* DIAGNOSTICS
+/*	Panic: consistency check failure. Fatal: out of memory.
+/* 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
+/*
+/*	Preemptive scheduler enhancements:
+/*	Patrik Rak
+/*	Modra 6
+/*	155 00, Prague, Czech Republic
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <vstream.h>
+
+/* Global library. */
+
+#include <mail_proto.h>
+#include <defer.h>
+
+/* Application-specific. */
+
+#include "qmgr.h"
+
+/* qmgr_defer_transport - defer todo entries for named transport */
+
+void    qmgr_defer_transport(QMGR_TRANSPORT *transport, DSN *dsn)
+{
+    QMGR_QUEUE *queue;
+    QMGR_QUEUE *next;
+
+    if (msg_verbose)
+	msg_info("defer transport %s: %s %s",
+		 transport->name, dsn->status, dsn->reason);
+
+    /*
+     * Proceed carefully. Queues may disappear as a side effect.
+     */
+    for (queue = transport->queue_list.next; queue; queue = next) {
+	next = queue->peers.next;
+	qmgr_defer_todo(queue, dsn);
+    }
+}
+
+/* qmgr_defer_todo - defer all todo queue entries for specific site */
+
+void    qmgr_defer_todo(QMGR_QUEUE *queue, DSN *dsn)
+{
+    QMGR_ENTRY *entry;
+    QMGR_ENTRY *next;
+    QMGR_MESSAGE *message;
+    RECIPIENT *recipient;
+    int     nrcpt;
+    QMGR_QUEUE *retry_queue;
+
+    /*
+     * Sanity checks.
+     */
+    if (msg_verbose)
+	msg_info("defer site %s: %s %s",
+		 queue->name, dsn->status, dsn->reason);
+
+    /*
+     * See if we can redirect the deliveries to the retry(8) delivery agent,
+     * so that they can be handled asynchronously. If the retry(8) service is
+     * unavailable, use the synchronous defer(8) server. With a large todo
+     * queue, this blocks the queue manager for a significant time.
+     */
+    retry_queue = qmgr_error_queue(MAIL_SERVICE_RETRY, dsn);
+
+    /*
+     * Proceed carefully. Queue entries may disappear as a side effect.
+     */
+    for (entry = queue->todo.next; entry != 0; entry = next) {
+	next = entry->queue_peers.next;
+	if (retry_queue != 0) {
+	    qmgr_entry_move_todo(retry_queue, entry);
+	    continue;
+	}
+	message = entry->message;
+	for (nrcpt = 0; nrcpt < entry->rcpt_list.len; nrcpt++) {
+	    recipient = entry->rcpt_list.info + nrcpt;
+	    qmgr_defer_recipient(message, recipient, dsn);
+	}
+	qmgr_entry_done(entry, QMGR_QUEUE_TODO);
+    }
+}
+
+/* qmgr_defer_recipient - defer delivery of specific recipient */
+
+void    qmgr_defer_recipient(QMGR_MESSAGE *message, RECIPIENT *recipient,
+			             DSN *dsn)
+{
+    MSG_STATS stats;
+
+    /*
+     * Update the message structure and log the message disposition.
+     */
+    message->flags |= defer_append(message->tflags, message->queue_id,
+				 QMGR_MSG_STATS(&stats, message), recipient,
+				   "none", dsn);
+}