From: Timo Sirainen <tss@iki.fi>
Date: Thu, 28 Jan 2010 21:08:32 +0000 (+0200)
Subject: lmtp: Switch back to running as root after deliver a mail.
X-Git-Tag: 2.0.beta2~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ca8c2190f161a28bb5020b6d6068d43ccf66b7d1;p=thirdparty%2Fdovecot%2Fcore.git

lmtp: Switch back to running as root after deliver a mail.

--HG--
branch : HEAD
---

diff --git a/src/lmtp/commands.c b/src/lmtp/commands.c
index 979316e4dc..b12e064bc6 100644
--- a/src/lmtp/commands.c
+++ b/src/lmtp/commands.c
@@ -436,10 +436,13 @@ client_deliver(struct client *client, const struct mail_recipient *rcpt,
 	struct mail_storage *storage;
 	const struct mail_storage_service_input *input;
 	void **sets;
+	uid_t old_uid;
 	const char *error, *username;
 	enum mail_error mail_error;
 	int ret;
 
+	old_uid = geteuid();
+
 	input = mail_storage_service_user_get_input(rcpt->service_user);
 	username = t_strdup(input->username);
 
@@ -494,6 +497,13 @@ client_deliver(struct client *client, const struct mail_recipient *rcpt,
 		}
 		ret = -1;
 	}
+	if (old_uid == 0) {
+		/* switch back to running as root, since that's what we're
+		   practically doing anyway. it's also important in case we
+		   lose e.g. config connection and need to reconnect to it. */
+		if (seteuid(0) < 0)
+			i_fatal("seteuid(0) failed: %m");
+	}
 	pool_unref(&dctx.pool);
 	return ret;
 }