1 files changed, 87 insertions, 0 deletions
diff --git a/imap/pop3dcapa.c b/imap/pop3dcapa.c
new file mode 100644
index 0000000..5d0eef4
--- /dev/null
+++ b/imap/pop3dcapa.c
@@ -0,0 +1,87 @@
+/*
+** Copyright 1998 - 2008 Double Precision, Inc.
+** See COPYING for distribution information.
+*/
+
+#if	HAVE_CONFIG_H
+#undef	PACKAGE
+#undef	VERSION
+#include	"config.h"
+#endif
+#include	<stdio.h>
+#include	<string.h>
+#include	<stdlib.h>
+#include	<signal.h>
+#include	<ctype.h>
+#include	<fcntl.h>
+#if	HAVE_UNISTD_H
+#include	<unistd.h>
+#endif
+
+
+extern const char *externalauth();
+
+int have_starttls()
+{
+	const char *p;
+
+        if ((p=getenv("POP3_STARTTLS")) == 0)   return (0);
+        if (*p != 'y' && *p != 'Y')             return (0);
+
+        p=getenv("COURIERTLS");
+        if (!p || !*p)  return (0);
+        if (access(p, X_OK))    return (0);
+        return (1);
+}
+
+
+int tls_required()
+{
+	const char *p=getenv("POP3_TLS_REQUIRED");
+
+        if (p && atoi(p))       return (1);
+        return (0);
+}
+
+const char *pop3_externalauth()
+{
+	const char *external=NULL;
+	const char *p;
+
+	if ((p=getenv("POP3_TLS")) != 0 && atoi(p))
+		external=externalauth();
+
+	return external;
+}
+
+void pop3dcapa()
+{
+	const char *p;
+	const char *external=pop3_externalauth();
+
+	printf("+OK Here's what I can do:\r\n");
+
+	if ((p=getenv("POP3_TLS")) != 0 && atoi(p) &&
+	    (p=getenv("POP3AUTH_TLS")) != 0 && *p)
+		;
+	else
+		p=getenv("POP3AUTH");
+
+	if ((p && *p) || external)
+	{
+		if (!p)
+			p="";
+
+		if (!external)
+			external="";
+
+		printf("SASL %s%s%s\r\n", p, *p && *external ? " ":"",
+		       *external ? "EXTERNAL":"");
+	}
+		
+	if (have_starttls())
+		printf("STLS\r\n");
+
+	printf("TOP\r\nUSER\r\nLOGIN-DELAY 10\r\nPIPELINING\r\nUIDL\r\nIMPLEMENTATION Courier Mail Server\r\n.\r\n");
+	fflush(stdout);
+}