BSD 4.4 Lite bin Sources

1 files changed, 114 insertions, 0 deletions

diff --git a/bin/sh/mail.c b/bin/sh/mail.c
new file mode 100644
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--- /dev/null
+++ b/bin/sh/mail.c
@@ -0,0 +1,114 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)mail.c	8.1 (Berkeley) 5/31/93";
+#endif /* not lint */
+
+/*
+ * Routines to check for mail.  (Perhaps make part of main.c?)
+ */
+
+#include "shell.h"
+#include "exec.h"	/* defines padvance() */
+#include "var.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+#define MAXMBOXES 10
+
+
+STATIC int nmboxes;			/* number of mailboxes */
+STATIC time_t mailtime[MAXMBOXES];	/* times of mailboxes */
+
+
+
+/*
+ * Print appropriate message(s) if mail has arrived.  If the argument is
+ * nozero, then the value of MAIL has changed, so we just update the
+ * values.
+ */
+
+void
+chkmail(silent) {
+	register int i;
+	char *mpath;
+	char *p;
+	register char *q;
+	struct stackmark smark;
+	struct stat statb;
+
+	if (silent)
+		nmboxes = 10;
+	if (nmboxes == 0)
+		return;
+	setstackmark(&smark);
+	mpath = mpathset()? mpathval() : mailval();
+	for (i = 0 ; i < nmboxes ; i++) {
+		p = padvance(&mpath, nullstr);
+		if (p == NULL)
+			break;
+		if (*p == '\0')
+			continue;
+		for (q = p ; *q ; q++);
+		if (q[-1] != '/')
+			abort();
+		q[-1] = '\0';			/* delete trailing '/' */
+#ifdef notdef /* this is what the System V shell claims to do (it lies) */
+		if (stat(p, &statb) < 0)
+			statb.st_mtime = 0;
+		if (statb.st_mtime > mailtime[i] && ! silent) {
+			out2str(pathopt? pathopt : "you have mail");
+			out2c('\n');
+		}
+		mailtime[i] = statb.st_mtime;
+#else /* this is what it should do */
+		if (stat(p, &statb) < 0)
+			statb.st_size = 0;
+		if (statb.st_size > mailtime[i] && ! silent) {
+			out2str(pathopt? pathopt : "you have mail");
+			out2c('\n');
+		}
+		mailtime[i] = statb.st_size;
+#endif
+	}
+	nmboxes = i;
+	popstackmark(&smark);
+}