From: Timo Sirainen <tss@iki.fi>
Date: Thu, 8 May 2003 03:36:21 +0000 (+0300)
Subject: Support wu-ftpd-like chrooting in /etc/passwd. If home directory ends with
X-Git-Tag: 1.1.alpha1~4667
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=02d32b05a69c125b9c30d7002f023de4bd55ab4b;p=thirdparty%2Fdovecot%2Fcore.git

Support wu-ftpd-like chrooting in /etc/passwd. If home directory ends with
"/./", it's chrooted to.

--HG--
branch : HEAD
---

diff --git a/src/auth/userdb-passwd.c b/src/auth/userdb-passwd.c
index 601463d202..f1f5de762d 100644
--- a/src/auth/userdb-passwd.c
+++ b/src/auth/userdb-passwd.c
@@ -15,6 +15,7 @@ static void passwd_lookup(const char *user, userdb_callback_t *callback,
 {
 	struct user_data data;
 	struct passwd *pw;
+	size_t len;
 
 	pw = getpwnam(user);
 	if (pw == NULL) {
@@ -31,7 +32,16 @@ static void passwd_lookup(const char *user, userdb_callback_t *callback,
 	data.gid = pw->pw_gid;
 
 	data.virtual_user = data.system_user = pw->pw_name;
-	data.home = pw->pw_dir;
+
+	len = strlen(pw->pw_dir);
+	if (len < 3 || strcmp(pw->pw_dir + len - 3, "/./") != 0)
+		data.home = pw->pw_dir;
+	else {
+		/* wu-ftpd uses <chroot>/./<dir>. We don't support
+		   the dir after chroot, but this should work well enough. */
+		data.home = t_strndup(pw->pw_dir, len-3);
+		data.chroot = TRUE;
+	}
 
 	callback(&data, context);
 }