From: Wolfgang Breyha <wbreyha@gmx.net>
Date: Tue, 7 Jan 2020 13:03:18 +0000 (+0000)
Subject: SPF: fix result for case of only non-spf TXT RRs.  Bug 2499
X-Git-Tag: exim-4_94_RC0~173
X-Git-Url: https://git.exim.org/exim.git/commitdiff_plain/67794d2b830fc580f87b0635718d95e32b467be1

SPF: fix result for case of only non-spf TXT RRs.  Bug 2499
---

diff --git a/src/src/spf.c b/src/src/spf.c
index 7671551bc..9b053ccf9 100644
--- a/src/src/spf.c
+++ b/src/src/spf.c
@@ -152,7 +152,12 @@ for (dns_record * rr = dns_next_rr(dnsa, &dnss, RESET_ANSWERS); rr;
     srr.rr[found++] = (void *) s;
     }
 
-srr.num_rr = found;
+/* Did we filter out all TXT RRs? Return NO_DATA instead of SUCCESS with
+empty ANSWER section. */
+
+if (!(srr.num_rr = found))
+  srr.herrno = NO_DATA;
+
 /* spfrr->rr must have been malloc()d for this */
 SPF_dns_rr_dup(&spfrr, &srr);
 return spfrr;
diff --git a/test/scripts/4600-SPF/4601 b/test/scripts/4600-SPF/4601
index 96f06a6d1..5e6602ab0 100644
--- a/test/scripts/4600-SPF/4601
+++ b/test/scripts/4600-SPF/4601
@@ -25,14 +25,13 @@ quit
 #
 killdaemon
 #
-# SERVFAIL -> temperror
-# A multiple spf-RR return should get permerror
-# - and not crash with non-spf txt records
-# v=spf1 is casr-insensitive
+#
+#
 exim -be
-none      ${lookup {fred@v6.test.ex} spf {HOSTIPV4}}
-temperror ${lookup {fred@test.again.dns} spf {HOSTIPV4}}
-permerror ${lookup {fred@double.example.com} spf {8.8.8.8}}
-permerror ${lookup {fred@doubleplus.example.com} spf {8.8.8.8}}
-pass      ${lookup {fred@uppercase.example.com} spf {HOSTIPV4}}
+eDNS_NOMATCH       none      ${lookup {fred@v6.test.ex} spf {HOSTIPV4}}
+eDNS_AGAIN         temperror ${lookup {fred@test.again.dns} spf {HOSTIPV4}}
+multiple rr        permerror ${lookup {fred@double.example.com} spf {8.8.8.8}}
+multi + non-spf    permerror ${lookup {fred@doubleplus.example.com} spf {8.8.8.8}}
+uppercase in v=    pass      ${lookup {fred@uppercase.example.com} spf {HOSTIPV4}}
+only non-spf txt   none      ${lookup {fred@test.ex} spf {HOSTIPV4}}
 ****
diff --git a/test/stdout/4601 b/test/stdout/4601
index cbb4cf502..38eefab33 100644
--- a/test/stdout/4601
+++ b/test/stdout/4601
@@ -26,9 +26,10 @@ Connecting to 127.0.0.1 port 1224 ... connected
 <<< 250 Accepted
 >>> quit
 End of script
-> none      none
-> temperror temperror
-> permerror permerror
-> permerror permerror
-> pass      pass
+> eDNS_NOMATCH       none      none
+> eDNS_AGAIN         temperror temperror
+> multiple rr        permerror permerror
+> multi + non-spf    permerror permerror
+> uppercase in v=    pass      pass
+> only non-spf txt   none      none
 >