From e8c743864ad1d7fe71ee719bea7e051402f9010e Mon Sep 17 00:00:00 2001
From: piaip <piaip@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>
Date: Thu, 10 Nov 2011 16:47:07 +0000
Subject: - improve new_mail reading

git-svn-id: http://opensvn.csie.org/pttbbs/trunk@5460 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
---
 pttbbs/mbbsd/mail.c | 35 ++++++++++++++++++++++-------------
 1 file changed, 22 insertions(+), 13 deletions(-)

diff --git a/pttbbs/mbbsd/mail.c b/pttbbs/mbbsd/mail.c
index 519cf249..5932aeb6 100644
--- a/pttbbs/mbbsd/mail.c
+++ b/pttbbs/mbbsd/mail.c
@@ -1005,23 +1005,32 @@ read_new_mail(void * voidfptr, void *optarg)
     char            genbuf[4];
 
     arg->idc++;
-    // XXX fptr->filename may be invalid.
-    if (fptr->filemode || !fptr->filename[0])
-	return 0;
-    clear();
-    move(10, 0);
-    prints("您要讀來自[%s]的訊息(%s)嗎？", fptr->owner, fptr->title);
-    getdata(11, 0, "請您確定(Y/N/Q)?[Y] ", genbuf, 3, DOECHO);
-    if (genbuf[0] == 'q')
-	return QUIT;
-    if (genbuf[0] == 'n')
-	return 0;
 
-    setuserfile(fname, fptr->filename);
+    if (fptr->filemode & FILE_READ)
+        return 0;
+
+    // XXX fptr->filename may be invalid.
+    if (*fptr->filename) {
+        clear();
+        move(10, 0);
+        prints("您要讀來自[%s]的訊息(%s)嗎？", fptr->owner, fptr->title);
+        getdata(11, 0, "請您確定(Y/N/Q)?[Y] ", genbuf, 3, LCECHO);
+        if (genbuf[0] == 'q')
+            return QUIT;
+        if (genbuf[0] == 'n')
+            return 0;
+    }
+
+    // no matter what, mark as read.
     fptr->filemode |= FILE_READ;
+    // Race condition here...
     if (substitute_fileheader(currmaildir, fptr, fptr, arg->idc))
-	return -1;
+        return -1;
 
+    if (!*fptr->filename)
+        return -1;
+
+    setuserfile(fname, fptr->filename);
     arg->mrd = 1;
     delete_it = NA;
     while (!done) {
-- 
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