[monitoring-plugins] sslutils: use chain from client certificates

waja git at monitoring-plugins.org
Sun Jan 30 12:30:11 CET 2022
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    Module: monitoring-plugins
    Branch: master
    Commit: 31bdbfce92de2dc7717fe13a8d1ca8e7dbf850d4
    Author: Tobias Wiese <tobias at tobiaswiese.com>
 Committer: waja <waja at users.noreply.github.com>
      Date: Sun May 23 01:39:15 2021 +0200
       URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=31bdbfc

sslutils: use chain from client certificates

sslutils used to load only the first certificate when it was given a
client certificate file.

Added tests for check_http to connect to a http server that expects a
client certificate (simple and with chain).

Signed-off-by: Tobias Wiese <tobias at tobiaswiese.com>

---

 plugins/sslutils.c                              |   2 +-
 plugins/tests/certs/.gitignore                  |   2 +
 plugins/tests/certs/client-cert.pem             |  22 ++
 plugins/tests/certs/client-key.pem              |  28 +++
 plugins/tests/certs/clientca-cert.pem           |  25 +++
 plugins/tests/certs/clientca-key.pem            |  28 +++
 plugins/tests/certs/clientchain-cert.pem        |  45 +++++
 plugins/tests/certs/clientchain-key.pem         |  28 +++
 plugins/tests/certs/clientintermediate-cert.pem |  23 +++
 plugins/tests/certs/clientintermediate-key.pem  |  28 +++
 plugins/tests/certs/expired-cert.pem            |  32 +--
 plugins/tests/certs/expired-key.pem             |  52 ++---
 plugins/tests/certs/ext.cnf                     |   2 +
 plugins/tests/certs/generate-certs.sh           |  63 ++++++
 plugins/tests/certs/server-cert.pem             |  44 ++--
 plugins/tests/certs/server-key.pem              |  52 ++---
 plugins/tests/check_curl.t                      |  10 +-
 plugins/tests/check_http.t                      | 256 ++++++++++++++----------
 18 files changed, 538 insertions(+), 204 deletions(-)

diff --git a/plugins/sslutils.c b/plugins/sslutils.c
index 14f6579..286273f 100644
--- a/plugins/sslutils.c
+++ b/plugins/sslutils.c
@@ -134,7 +134,7 @@ int np_net_ssl_init_with_hostname_version_and_cert(int sd, char *host_name, int
 		return STATE_CRITICAL;
 	}
 	if (cert && privkey) {
-		SSL_CTX_use_certificate_file(c, cert, SSL_FILETYPE_PEM);
+		SSL_CTX_use_certificate_chain_file(c, cert);
 		SSL_CTX_use_PrivateKey_file(c, privkey, SSL_FILETYPE_PEM);
 #ifdef USE_OPENSSL
 		if (!SSL_CTX_check_private_key(c)) {
diff --git a/plugins/tests/certs/.gitignore b/plugins/tests/certs/.gitignore
new file mode 100644
index 0000000..79acaaa
--- /dev/null
+++ b/plugins/tests/certs/.gitignore
@@ -0,0 +1,2 @@
+/*.csr
+/*.srl
diff --git a/plugins/tests/certs/client-cert.pem b/plugins/tests/certs/client-cert.pem
new file mode 100644
index 0000000..5709750
--- /dev/null
+++ b/plugins/tests/certs/client-cert.pem
@@ -0,0 +1,22 @@
+-----BEGIN CERTIFICATE-----
+MIIDtDCCApwCAQIwDQYJKoZIhvcNAQELBQAwgaAxCzAJBgNVBAYTAkRFMRAwDgYD
+VQQIDAdCYXZhcmlhMQ8wDQYDVQQHDAZNdW5pY2gxGzAZBgNVBAoMEk1vbml0b3Jp
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+-----END CERTIFICATE-----
diff --git a/plugins/tests/certs/client-key.pem b/plugins/tests/certs/client-key.pem
new file mode 100644
index 0000000..09b6761
--- /dev/null
+++ b/plugins/tests/certs/client-key.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----
diff --git a/plugins/tests/certs/clientca-cert.pem b/plugins/tests/certs/clientca-cert.pem
new file mode 100644
index 0000000..9ce7cd7
--- /dev/null
+++ b/plugins/tests/certs/clientca-cert.pem
@@ -0,0 +1,25 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/plugins/tests/certs/clientca-key.pem b/plugins/tests/certs/clientca-key.pem
new file mode 100644
index 0000000..a939f03
--- /dev/null
+++ b/plugins/tests/certs/clientca-key.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----
diff --git a/plugins/tests/certs/clientchain-cert.pem b/plugins/tests/certs/clientchain-cert.pem
new file mode 100644
index 0000000..acd1e3e
--- /dev/null
+++ b/plugins/tests/certs/clientchain-cert.pem
@@ -0,0 +1,45 @@
+-----BEGIN CERTIFICATE-----
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+-----BEGIN CERTIFICATE-----
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+yxeLd930pH4vZu7s0XM56N/ckkfUzRkAH8dSmhH4
+-----END CERTIFICATE-----
diff --git a/plugins/tests/certs/clientchain-key.pem b/plugins/tests/certs/clientchain-key.pem
new file mode 100644
index 0000000..0263604
--- /dev/null
+++ b/plugins/tests/certs/clientchain-key.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----
diff --git a/plugins/tests/certs/clientintermediate-cert.pem b/plugins/tests/certs/clientintermediate-cert.pem
new file mode 100644
index 0000000..608a8fa
--- /dev/null
+++ b/plugins/tests/certs/clientintermediate-cert.pem
@@ -0,0 +1,23 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/plugins/tests/certs/clientintermediate-key.pem b/plugins/tests/certs/clientintermediate-key.pem
new file mode 100644
index 0000000..13f6887
--- /dev/null
+++ b/plugins/tests/certs/clientintermediate-key.pem
@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----
diff --git a/plugins/tests/certs/expired-cert.pem b/plugins/tests/certs/expired-cert.pem
index 77a9166..87fc8e4 100644
--- a/plugins/tests/certs/expired-cert.pem
+++ b/plugins/tests/certs/expired-cert.pem
@@ -1,24 +1,24 @@
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
diff --git a/plugins/tests/certs/expired-key.pem b/plugins/tests/certs/expired-key.pem
index c1510b2..c5bba56 100644
--- a/plugins/tests/certs/expired-key.pem
+++ b/plugins/tests/certs/expired-key.pem
@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
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+nWLSb3sWo96Iuns+RoMqeA9wkqsCgYEA1U/UqeVQVTPlrWyiB2VXoI1xvFCCJTf8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 -----END PRIVATE KEY-----
diff --git a/plugins/tests/certs/ext.cnf b/plugins/tests/certs/ext.cnf
new file mode 100644
index 0000000..d09cee1
--- /dev/null
+++ b/plugins/tests/certs/ext.cnf
@@ -0,0 +1,2 @@
+[ client_ca ]
+basicConstraints = critical, CA:true
diff --git a/plugins/tests/certs/generate-certs.sh b/plugins/tests/certs/generate-certs.sh
new file mode 100755
index 0000000..78660a2
--- /dev/null
+++ b/plugins/tests/certs/generate-certs.sh
@@ -0,0 +1,63 @@
+#!/bin/sh -e
+#
+# Recreates the https server certificates
+#
+# Set the GEN_EXPIRED environment variable to also regenerate
+# the expired certificate.
+
+cd "$(dirname "$0")"
+trap 'rm -f *.csr; rm -f clientca-cert.srl' EXIT
+
+subj() {
+	c="DE"
+	st="Bavaria"
+	l="Munich"
+	o="Monitoring Plugins"
+	cn="Monitoring Plugins"
+	emailAddress="devel at monitoring-plugins.org"
+
+	if [ -n "$1" ]; then
+		# Add to CN
+		cn="$cn $1"
+	fi
+
+	printf "/C=%s/ST=%s/L=%s/O=%s/CN=%s/emailAddress=%s" \
+		"$c" "$st" "$l" "$o" "$cn" "$emailAddress"
+}
+
+# server
+openssl req -new -x509 -days 3560 -nodes \
+	-keyout server-key.pem -out server-cert.pem \
+	-subj "$(subj)"
+# server, expired
+# there is generally no need to regenerate this, as it will stay epxired
+[ -n "$GEN_EXPIRED" ] && TZ=UTC faketime -f '2008-01-01 12:00:00' \
+	openssl req -new -x509 -days 1 -nodes \
+		-keyout expired-key.pem -out expired-cert.pem \
+		-subj "$(subj)"
+
+# client, ca
+openssl req -new -x509 -days 3560 -nodes \
+	-keyout clientca-key.pem -out clientca-cert.pem \
+	-subj "$(subj ClientCA)"
+echo "01" >clientca-cert.srl
+# client
+openssl req -new -nodes \
+	-keyout client-key.pem -out client-cert.csr \
+	-subj "$(subj Client)"
+openssl x509 -days 3560 -req -CA clientca-cert.pem -CAkey clientca-key.pem \
+	-in client-cert.csr -out client-cert.pem
+# client, intermediate
+openssl req -new -nodes \
+	-keyout clientintermediate-key.pem -out clientintermediate-cert.csr \
+	-subj "$(subj ClientIntermediate)"
+openssl x509 -days 3560 -req -CA clientca-cert.pem -CAkey clientca-key.pem \
+	-extfile ext.cnf -extensions client_ca \
+	-in clientintermediate-cert.csr -out clientintermediate-cert.pem
+# client, chain
+openssl req -new -nodes \
+	-keyout clientchain-key.pem -out clientchain-cert.csr \
+	-subj "$(subj ClientChain)"
+openssl x509 -days 3560 -req -CA clientca-cert.pem -CAkey clientca-key.pem \
+	-in clientchain-cert.csr -out clientchain-cert.pem
+cat clientintermediate-cert.pem >>clientchain-cert.pem
diff --git a/plugins/tests/certs/server-cert.pem b/plugins/tests/certs/server-cert.pem
index b84b91d..d1249ef 100644
--- a/plugins/tests/certs/server-cert.pem
+++ b/plugins/tests/certs/server-cert.pem
@@ -1,24 +1,24 @@
 -----BEGIN CERTIFICATE-----
-MIIEBjCCAu6gAwIBAgIJANbQ5QQrKhUGMA0GCSqGSIb3DQEBCwUAMIGXMQswCQYD
-VQQGEwJERTEQMA4GA1UECAwHQmF2YXJpYTEPMA0GA1UEBwwGTXVuaWNoMRswGQYD
-VQQKDBJNb25pdG9yaW5nIFBsdWdpbnMxGzAZBgNVBAMMEk1vbml0b3JpbmcgUGx1
-Z2luczErMCkGCSqGSIb3DQEJARYcZGV2ZWxAbW9uaXRvcmluZy1wbHVnaW5zLm9y
-ZzAeFw0xOTAyMTkxNTMxNDRaFw0yOTAyMTYxNTMxNDRaMIGXMQswCQYDVQQGEwJE
-RTEQMA4GA1UECAwHQmF2YXJpYTEPMA0GA1UEBwwGTXVuaWNoMRswGQYDVQQKDBJN
-b25pdG9yaW5nIFBsdWdpbnMxGzAZBgNVBAMMEk1vbml0b3JpbmcgUGx1Z2luczEr
-MCkGCSqGSIb3DQEJARYcZGV2ZWxAbW9uaXRvcmluZy1wbHVnaW5zLm9yZzCCASIw
-DQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKgV2yp8pQvJuN+aJGdAe6Hd0tja
-uteCPcNIcM92WLOF69TLTSYon1XDon4tHTh4Z5d4lD8bfsGzFVBmDSgWidhAUf+v
-EqEXwbp293ej/Frc0pXCvmrz6kI1tWrLtQhL/VdbxFYxhV7JjKb+PY3SxGFpSLPe
-PQ/5SwVndv7rZIwcjseL22K5Uy2TIrkgzzm2pRs/IvoxRybYr/+LGoHyrtJC6AO8
-ylp8A/etL0gwtUvRnrnZeTQ2pA1uZ5QN3anTL8JP/ZRZYNegIkaawqMtTKbhM6pi
-u3/4a3Uppvt0y7vmGfQlYejxCpICnMrvHMpw8L58zv/98AbCGjDU3UwCt6MCAwEA
-AaNTMFEwHQYDVR0OBBYEFG/UH6nGYPlVcM75UXzXBF5GZyrcMB8GA1UdIwQYMBaA
-FG/UH6nGYPlVcM75UXzXBF5GZyrcMA8GA1UdEwEB/wQFMAMBAf8wDQYJKoZIhvcN
-AQELBQADggEBAGwitJPOnlIKLndNf+iCLMIs0dxsl8kAaejFcjoT0n4ja7Y6Zrqz
-VSIidzz9vQWvy24xKJpAOdj/iLRHCUOG+Pf5fA6+/FiuqXr6gE2/lm0eC58BNONr
-E5OzjQ/VoQ8RX4hDntgu6FYbaVa/vhwn16igt9qmdNGGZXf2/+DM3JADwyaA4EK8
-vm7KdofX9zkxXecHPNvf3jiVLPiDDt6tkGpHPEsyP/yc+RUdltUeZvHfliV0cCuC
-jJX+Fm9ysjSpHIFFr+jUMuMHibWoOD8iy3eYxfCDoWsH488pCbj8MNuAq6vd6DBk
-bOZxDz43vjWuYMkwXJTxJQh7Pne6kK0vE1g=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 -----END CERTIFICATE-----
diff --git a/plugins/tests/certs/server-key.pem b/plugins/tests/certs/server-key.pem
index 1194755..0de63f8 100644
--- a/plugins/tests/certs/server-key.pem
+++ b/plugins/tests/certs/server-key.pem
@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCoFdsqfKULybjf
-miRnQHuh3dLY2rrXgj3DSHDPdlizhevUy00mKJ9Vw6J+LR04eGeXeJQ/G37BsxVQ
-Zg0oFonYQFH/rxKhF8G6dvd3o/xa3NKVwr5q8+pCNbVqy7UIS/1XW8RWMYVeyYym
-/j2N0sRhaUiz3j0P+UsFZ3b+62SMHI7Hi9tiuVMtkyK5IM85tqUbPyL6MUcm2K//
-ixqB8q7SQugDvMpafAP3rS9IMLVL0Z652Xk0NqQNbmeUDd2p0y/CT/2UWWDXoCJG
-msKjLUym4TOqYrt/+Gt1Kab7dMu75hn0JWHo8QqSApzK7xzKcPC+fM7//fAGwhow
-1N1MArejAgMBAAECggEANuvdTwanTzC8jaNqHaq+OuemS2E9B8nwsGxtH/zFgvNR
-WZiMPtmrJnTkFWJcV+VPw/iMSAqN4nDHmBugVOb4Z4asxGTKK4T9shXJSnh0rqPU
-00ZsvbmxY6z0+E5TesCJqQ+9GYTY1V357V7JchvaOxIRxWPqg9urHbru8OCtW/I5
-Fh5HPUZlgCvlMpjlhyjydIf/oXyVA3RNsXlwe8+2cKuGIrjEzm2j9o3VF0sctTX0
-ItP8A9qDmDQN7GIWX0MW6gncojpS1omC2wcFsdjj/xfPyiDal1X4aq/2YqG8351c
-YlM/+6Va0u9WWE/i64gASTAVqpMV4Yg8y0gGycuA0QKBgQDbgI2QeLd3FvMcURiU
-l3w9qJgw/Jp3jaNC/9LkVGGz4f4lKKB67lPZvI4noMK8GqO/LcXgqP/RY1oJojoA
-/6JKVvzYGASZ7VgMoG9bk1AneP1PGdibuTUEwimGlcObxnDFIC/yjwPFu3jIdqdS
-zZi1RZzyqAogN5y3SBEypSmn9wKBgQDECKsqqlcizmCl8v5aVk875AzGN+DOHZqx
-bkmztlnLO/2e2Fmk3G5Vvnui0FYisf8Eq19tUTQCF6lSfJlGQeFAT119wkFZhLu+
-FfLGqoEMH0ijJg/8PpdpFRK3I94YcISoTNN6yxMvE6xdDGfKCt5a+IX5bwQi9Zdc
-B242gEc6tQKBgA6tM8n7KFlAIZU9HuWgk2AUC8kKutFPmSD7tgAqXDYI4FNfugs+
-MEEYyHCB4UNujJBV4Ss6YZCAkh6eyD4U2aca1eElCfm40vBVMdzvpqZdAqLtWXxg
-D9l3mgszrFaYGCY2Fr6jLV9lP5g3xsxUjudf9jSLY9HvpfzjRrMaNATVAoGBALTl
-/vYfPMucwKlC5B7++J0e4/7iv6vUu9SyHocdZh1anb9AjPDKjXLIlZT4RhQ8R0XK
-0wOw5JpttU2uN08TKkbLNk3/vYhbKVjPLjrQSseh8sjDLgsqw1QwIxYnniLVakVY
-p+rvjSNrNyqicQCMKQavwgocvSd5lJRTMwxOMezlAoGBAKWj71BX+0CK00/2S6lC
-TcNcuUPG0d8y1czZ4q6tUlG4htwq1FMOpaghATXjkdsOGTLS+H1aA0Kt7Ai9zDhc
-/bzOJEJ+jvBXV4Gcs7jl1r/HTKv0tT9ZSI5Vzkida0rfqxDGzcMVlLuCdH0cb8Iu
-N0wdmCAqlQwHR13+F1zrAD7V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 -----END PRIVATE KEY-----
diff --git a/plugins/tests/check_curl.t b/plugins/tests/check_curl.t
index 29cb03f..aa72ef6 100755
--- a/plugins/tests/check_curl.t
+++ b/plugins/tests/check_curl.t
@@ -228,23 +228,25 @@ SKIP: {
 	skip "HTTP::Daemon::SSL not installed", $common_tests + $ssl_only_tests if ! exists $servers->{https};
 	run_common_tests( { command => "$command -p $port_https", ssl => 1 } );
 
+	my $expiry = "Thu Nov 28 21:02:11 2030 +0000";
+
 	$result = NPTest->testCmd( "$command -p $port_https -S -C 14" );
 	is( $result->return_code, 0, "$command -p $port_https -S -C 14" );
-	is( $result->output, "OK - Certificate 'Monitoring Plugins' will expire on Fri Feb 16 15:31:44 2029 +0000.", "output ok" );
+	is( $result->output, "OK - Certificate 'Monitoring Plugins' will expire on $expiry.", "output ok" );
 
 	$result = NPTest->testCmd( "$command -p $port_https -S -C 14000" );
 	is( $result->return_code, 1, "$command -p $port_https -S -C 14000" );
-	like( $result->output, '/WARNING - Certificate \'Monitoring Plugins\' expires in \d+ day\(s\) \(Fri Feb 16 15:31:44 2029 \+0000\)./', "output ok" );
+	like( $result->output, '/WARNING - Certificate \'Monitoring Plugins\' expires in \d+ day\(s\) \(' . quotemeta($expiry) . '\)./', "output ok" );
 
 	# Expired cert tests
 	$result = NPTest->testCmd( "$command -p $port_https -S -C 13960,14000" );
 	is( $result->return_code, 2, "$command -p $port_https -S -C 13960,14000" );
-	like( $result->output, '/CRITICAL - Certificate \'Monitoring Plugins\' expires in \d+ day\(s\) \(Fri Feb 16 15:31:44 2029 \+0000\)./', "output ok" );
+	like( $result->output, '/CRITICAL - Certificate \'Monitoring Plugins\' expires in \d+ day\(s\) \(' . quotemeta($expiry) . '\)./', "output ok" );
 
 	$result = NPTest->testCmd( "$command -p $port_https_expired -S -C 7" );
 	is( $result->return_code, 2, "$command -p $port_https_expired -S -C 7" );
 	is( $result->output,
-		'CRITICAL - Certificate \'Monitoring Plugins\' expired on Wed Jan  2 11:00:26 2008 +0000.',
+		'CRITICAL - Certificate \'Monitoring Plugins\' expired on Wed Jan  2 12:00:00 2008 +0000.',
 		"output ok" );
 
 }
diff --git a/plugins/tests/check_http.t b/plugins/tests/check_http.t
index 188f5e7..ea11b2a 100755
--- a/plugins/tests/check_http.t
+++ b/plugins/tests/check_http.t
@@ -3,16 +3,7 @@
 # Test check_http by having an actual HTTP server running
 #
 # To create the https server certificate:
-# openssl req -new -x509 -keyout server-key.pem -out server-cert.pem -days 3650 -nodes
-# to create a new expired certificate:
-# faketime '2008-01-01 12:00:00' openssl req -new -x509 -keyout expired-key.pem -out expired-cert.pem -days 1 -nodes
-# Country Name (2 letter code) [AU]:DE
-# State or Province Name (full name) [Some-State]:Bavaria
-# Locality Name (eg, city) []:Munich
-# Organization Name (eg, company) [Internet Widgits Pty Ltd]:Monitoring Plugins
-# Organizational Unit Name (eg, section) []:
-# Common Name (e.g. server FQDN or YOUR name) []:Monitoring Plugins
-# Email Address []:devel at monitoring-plugins.org
+# ./certs/generate-certs.sh
 
 use strict;
 use Test::More;
@@ -23,7 +14,7 @@ $ENV{'LC_TIME'} = "C";
 
 my $common_tests = 70;
 my $virtual_port_tests = 8;
-my $ssl_only_tests = 8;
+my $ssl_only_tests = 12;
 # Check that all dependent modules are available
 eval "use HTTP::Daemon 6.01;";
 plan skip_all => 'HTTP::Daemon >= 6.01 required' if $@;
@@ -59,61 +50,87 @@ $HTTP::Daemon::VERSION = "1.00";
 my $port_http = 50000 + int(rand(1000));
 my $port_https = $port_http + 1;
 my $port_https_expired = $port_http + 2;
+my $port_https_clientcert = $port_http + 3;
 
 # This array keeps sockets around for implementing timeouts
 my @persist;
 
 # Start up all servers
 my @pids;
-my $pid = fork();
-if ($pid) {
-	# Parent
-	push @pids, $pid;
-	if (exists $servers->{https}) {
-		# Fork a normal HTTPS server
-		$pid = fork();
-		if ($pid) {
-			# Parent
-			push @pids, $pid;
-			# Fork an expired cert server
-			$pid = fork();
-			if ($pid) {
-				push @pids, $pid;
-			} else {
-				my $d = HTTP::Daemon::SSL->new(
-					LocalPort => $port_https_expired,
-					LocalAddr => "127.0.0.1",
-					SSL_cert_file => "$Bin/certs/expired-cert.pem",
-					SSL_key_file => "$Bin/certs/expired-key.pem",
-				) || die;
-				print "Please contact https expired at: <URL:", $d->url, ">\n";
-				run_server( $d );
-				exit;
-			}
-		} else {
-			# closing the connection after -C cert checks make the daemon exit with a sigpipe otherwise
-			local $SIG{'PIPE'} = 'IGNORE';
-			my $d = HTTP::Daemon::SSL->new(
-				LocalPort => $port_https,
-				LocalAddr => "127.0.0.1",
-				SSL_cert_file => "$Bin/certs/server-cert.pem",
-				SSL_key_file => "$Bin/certs/server-key.pem",
-			) || die;
-			print "Please contact https at: <URL:", $d->url, ">\n";
-			run_server( $d );
-			exit;
-		}
-	}
-} else {
-	# Child
-	#print "child\n";
+# Fork a HTTP server
+my $pid = fork;
+defined $pid or die "Failed to fork";
+if (!$pid) {
+	undef @pids;
 	my $d = HTTP::Daemon->new(
 		LocalPort => $port_http,
 		LocalAddr => "127.0.0.1",
 	) || die;
 	print "Please contact http at: <URL:", $d->url, ">\n";
 	run_server( $d );
-	exit;
+	die "webserver stopped";
+}
+push @pids, $pid;
+
+if (exists $servers->{https}) {
+	# Fork a normal HTTPS server
+	$pid = fork;
+	defined $pid or die "Failed to fork";
+	if (!$pid) {
+		undef @pids;
+		# closing the connection after -C cert checks make the daemon exit with a sigpipe otherwise
+		local $SIG{'PIPE'} = 'IGNORE';
+		my $d = HTTP::Daemon::SSL->new(
+			LocalPort => $port_https,
+			LocalAddr => "127.0.0.1",
+			SSL_cert_file => "$Bin/certs/server-cert.pem",
+			SSL_key_file => "$Bin/certs/server-key.pem",
+		) || die;
+		print "Please contact https at: <URL:", $d->url, ">\n";
+		run_server( $d );
+		die "webserver stopped";
+	}
+	push @pids, $pid;
+
+	# Fork an expired cert server
+	$pid = fork;
+	defined $pid or die "Failed to fork";
+	if (!$pid) {
+		undef @pids;
+		# closing the connection after -C cert checks make the daemon exit with a sigpipe otherwise
+		local $SIG{'PIPE'} = 'IGNORE';
+		my $d = HTTP::Daemon::SSL->new(
+			LocalPort => $port_https_expired,
+			LocalAddr => "127.0.0.1",
+			SSL_cert_file => "$Bin/certs/expired-cert.pem",
+			SSL_key_file => "$Bin/certs/expired-key.pem",
+		) || die;
+		print "Please contact https expired at: <URL:", $d->url, ">\n";
+		run_server( $d );
+		die "webserver stopped";
+	}
+	push @pids, $pid;
+
+	# Fork an client cert expecting server
+	$pid = fork;
+	defined $pid or die "Failed to fork";
+	if (!$pid) {
+		undef @pids;
+		# closing the connection after -C cert checks make the daemon exit with a sigpipe otherwise
+		local $SIG{'PIPE'} = 'IGNORE';
+		my $d = HTTP::Daemon::SSL->new(
+			LocalPort => $port_https_clientcert,
+			LocalAddr => "127.0.0.1",
+			SSL_cert_file => "$Bin/certs/server-cert.pem",
+			SSL_key_file => "$Bin/certs/server-key.pem",
+			SSL_verify_mode => IO::Socket::SSL->SSL_VERIFY_PEER | IO::Socket::SSL->SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
+			SSL_ca_file => "$Bin/certs/clientca-cert.pem",
+		) || die;
+		print "Please contact https client cert at: <URL:", $d->url, ">\n";
+		run_server( $d );
+		die "webserver stopped";
+	}
+	push @pids, $pid;
 }
 
 # give our webservers some time to startup
@@ -122,60 +139,62 @@ sleep(3);
 # Run the same server on http and https
 sub run_server {
 	my $d = shift;
-	MAINLOOP: while (my $c = $d->accept ) {
-		while (my $r = $c->get_request) {
-			if ($r->method eq "GET" and $r->url->path =~ m^/statuscode/(\d+)^) {
-				$c->send_basic_header($1);
-				$c->send_crlf;
-			} elsif ($r->method eq "GET" and $r->url->path =~ m^/file/(.*)^) {
-				$c->send_basic_header;
-				$c->send_crlf;
-				$c->send_file_response("$Bin/var/$1");
-			} elsif ($r->method eq "GET" and $r->url->path eq "/slow") {
-				$c->send_basic_header;
-				$c->send_crlf;
-				sleep 1;
-				$c->send_response("slow");
-			} elsif ($r->url->path eq "/method") {
-				if ($r->method eq "DELETE") {
-					$c->send_error(HTTP::Status->RC_METHOD_NOT_ALLOWED);
-				} elsif ($r->method eq "foo") {
-					$c->send_error(HTTP::Status->RC_NOT_IMPLEMENTED);
+	while (1) {
+		MAINLOOP: while (my $c = $d->accept) {
+			while (my $r = $c->get_request) {
+				if ($r->method eq "GET" and $r->url->path =~ m^/statuscode/(\d+)^) {
+					$c->send_basic_header($1);
+					$c->send_crlf;
+				} elsif ($r->method eq "GET" and $r->url->path =~ m^/file/(.*)^) {
+					$c->send_basic_header;
+					$c->send_crlf;
+					$c->send_file_response("$Bin/var/$1");
+				} elsif ($r->method eq "GET" and $r->url->path eq "/slow") {
+					$c->send_basic_header;
+					$c->send_crlf;
+					sleep 1;
+					$c->send_response("slow");
+				} elsif ($r->url->path eq "/method") {
+					if ($r->method eq "DELETE") {
+						$c->send_error(HTTP::Status->RC_METHOD_NOT_ALLOWED);
+					} elsif ($r->method eq "foo") {
+						$c->send_error(HTTP::Status->RC_NOT_IMPLEMENTED);
+					} else {
+						$c->send_status_line(200, $r->method);
+					}
+				} elsif ($r->url->path eq "/postdata") {
+					$c->send_basic_header;
+					$c->send_crlf;
+					$c->send_response($r->method.":".$r->content);
+				} elsif ($r->url->path eq "/redirect") {
+					$c->send_redirect( "/redirect2" );
+				} elsif ($r->url->path eq "/redir_external") {
+					$c->send_redirect(($d->isa('HTTP::Daemon::SSL') ? "https" : "http") . "://169.254.169.254/redirect2" );
+				} elsif ($r->url->path eq "/redirect2") {
+					$c->send_basic_header;
+					$c->send_crlf;
+					$c->send_response(HTTP::Response->new( 200, 'OK', undef, 'redirected' ));
+				} elsif ($r->url->path eq "/redir_timeout") {
+					$c->send_redirect( "/timeout" );
+				} elsif ($r->url->path eq "/timeout") {
+					# Keep $c from being destroyed, but prevent severe leaks
+					unshift @persist, $c;
+					delete($persist[1000]);
+					next MAINLOOP;
+				} elsif ($r->url->path eq "/header_check") {
+					$c->send_basic_header;
+					$c->send_header('foo');
+					$c->send_crlf;
+				} elsif ($r->url->path eq "/virtual_port") {
+					# return sent Host header
+					$c->send_basic_header;
+					$c->send_crlf;
+					$c->send_response(HTTP::Response->new( 200, 'OK', undef, $r->header ('Host')));
 				} else {
-					$c->send_status_line(200, $r->method);
+					$c->send_error(HTTP::Status->RC_FORBIDDEN);
 				}
-			} elsif ($r->url->path eq "/postdata") {
-				$c->send_basic_header;
-				$c->send_crlf;
-				$c->send_response($r->method.":".$r->content);
-			} elsif ($r->url->path eq "/redirect") {
-				$c->send_redirect( "/redirect2" );
-			} elsif ($r->url->path eq "/redir_external") {
-				$c->send_redirect(($d->isa('HTTP::Daemon::SSL') ? "https" : "http") . "://169.254.169.254/redirect2" );
-			} elsif ($r->url->path eq "/redirect2") {
-				$c->send_basic_header;
-				$c->send_crlf;
-				$c->send_response(HTTP::Response->new( 200, 'OK', undef, 'redirected' ));
-			} elsif ($r->url->path eq "/redir_timeout") {
-				$c->send_redirect( "/timeout" );
-			} elsif ($r->url->path eq "/timeout") {
-				# Keep $c from being destroyed, but prevent severe leaks
-				unshift @persist, $c;
-				delete($persist[1000]);
-				next MAINLOOP;
-			} elsif ($r->url->path eq "/header_check") {
-				$c->send_basic_header;
-				$c->send_header('foo');
-				$c->send_crlf;
-			} elsif ($r->url->path eq "/virtual_port") {
-				# return sent Host header
-				$c->send_basic_header;
-				$c->send_crlf;
-				$c->send_response(HTTP::Response->new( 200, 'OK', undef, $r->header ('Host')));
-			} else {
-				$c->send_error(HTTP::Status->RC_FORBIDDEN);
+				$c->close;
 			}
-			$c->close;
 		}
 	}
 }
@@ -200,25 +219,44 @@ SKIP: {
 	skip "HTTP::Daemon::SSL not installed", $common_tests + $ssl_only_tests if ! exists $servers->{https};
 	run_common_tests( { command => "$command -p $port_https", ssl => 1 } );
 
+	my $expiry = "Thu Nov 28 21:02:11 2030 +0000";
+
 	$result = NPTest->testCmd( "$command -p $port_https -S -C 14" );
 	is( $result->return_code, 0, "$command -p $port_https -S -C 14" );
-	is( $result->output, "OK - Certificate 'Monitoring Plugins' will expire on Fri Feb 16 15:31:44 2029 +0000.", "output ok" );
+	is( $result->output, "OK - Certificate 'Monitoring Plugins' will expire on $expiry.", "output ok" );
 
 	$result = NPTest->testCmd( "$command -p $port_https -S -C 14000" );
 	is( $result->return_code, 1, "$command -p $port_https -S -C 14000" );
-	like( $result->output, '/WARNING - Certificate \'Monitoring Plugins\' expires in \d+ day\(s\) \(Fri Feb 16 15:31:44 2029 \+0000\)./', "output ok" );
+	like( $result->output, '/WARNING - Certificate \'Monitoring Plugins\' expires in \d+ day\(s\) \(' . quotemeta($expiry) . '\)./', "output ok" );
 
 	# Expired cert tests
 	$result = NPTest->testCmd( "$command -p $port_https -S -C 13960,14000" );
 	is( $result->return_code, 2, "$command -p $port_https -S -C 13960,14000" );
-	like( $result->output, '/CRITICAL - Certificate \'Monitoring Plugins\' expires in \d+ day\(s\) \(Fri Feb 16 15:31:44 2029 \+0000\)./', "output ok" );
+	like( $result->output, '/CRITICAL - Certificate \'Monitoring Plugins\' expires in \d+ day\(s\) \(' . quotemeta($expiry) . '\)./', "output ok" );
 
 	$result = NPTest->testCmd( "$command -p $port_https_expired -S -C 7" );
 	is( $result->return_code, 2, "$command -p $port_https_expired -S -C 7" );
 	is( $result->output,
-		'CRITICAL - Certificate \'Monitoring Plugins\' expired on Wed Jan  2 11:00:26 2008 +0000.',
+		'CRITICAL - Certificate \'Monitoring Plugins\' expired on Wed Jan  2 12:00:00 2008 +0000.',
 		"output ok" );
 
+	# client cert tests
+	my $cmd;
+	$cmd = "$command -p $port_https_clientcert"
+		. " -J \"$Bin/certs/client-cert.pem\""
+		. " -K \"$Bin/certs/client-key.pem\""
+		. " -u /statuscode/200";
+	$result = NPTest->testCmd($cmd);
+	is( $result->return_code, 0, $cmd);
+	like( $result->output, '/^HTTP OK: HTTP/1.1 200 OK - \d+ bytes in [\d\.]+ second/', "Output correct: ".$result->output );
+
+	$cmd = "$command -p $port_https_clientcert"
+		. " -J \"$Bin/certs/clientchain-cert.pem\""
+		. " -K \"$Bin/certs/clientchain-key.pem\""
+		. " -u /statuscode/200";
+	$result = NPTest->testCmd($cmd);
+	is( $result->return_code, 0, $cmd);
+	like( $result->output, '/^HTTP OK: HTTP/1.1 200 OK - \d+ bytes in [\d\.]+ second/', "Output correct: ".$result->output );
 }
 
 my $cmd;
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