Use "cont" consistently in cms-examples.pl

Add a -certsout option to output any certificates in a message.

Add test for example 4.11
diff --git a/apps/cms.c b/apps/cms.c
index b1ffb38..42bdb69 100644
--- a/apps/cms.c
+++ b/apps/cms.c
@@ -107,6 +107,7 @@
 	char *signerfile = NULL, *recipfile = NULL;
 	STACK *sksigners = NULL, *skkeys = NULL;
 	char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
+	char *certsoutfile = NULL;
 	const EVP_CIPHER *cipher = NULL;
 	CMS_ContentInfo *cms = NULL, *rcms = NULL;
 	X509_STORE *store = NULL;
@@ -397,6 +398,12 @@
 				goto argerr;
 			recipfile = *++args;
 			}
+		else if (!strcmp (*args, "-certsout"))
+			{
+			if (!args[1])
+				goto argerr;
+			certsoutfile = *++args;
+			}
 		else if (!strcmp (*args, "-md"))
 			{
 			if (!args[1])
@@ -602,6 +609,7 @@
 		BIO_printf (bio_err, "-noattr        don't include any signed attributes\n");
 		BIO_printf (bio_err, "-binary        don't translate message to text\n");
 		BIO_printf (bio_err, "-certfile file other certificates file\n");
+		BIO_printf (bio_err, "-certsout file certificate output file\n");
 		BIO_printf (bio_err, "-signer file   signer certificate file\n");
 		BIO_printf (bio_err, "-recip  file   recipient certificate file for decryption\n");
 		BIO_printf (bio_err, "-skeyid        use subject key identifier\n");
@@ -797,6 +805,20 @@
 				goto end;
 				}
 			}
+		if (certsoutfile)
+			{
+			STACK_OF(X509) *allcerts;
+			allcerts = CMS_get1_certs(cms);
+			if (!save_certs(certsoutfile, allcerts))
+				{
+				BIO_printf(bio_err,
+						"Error writing certs to %s\n",
+								certsoutfile);
+				ret = 5;
+				goto end;
+				}
+			sk_X509_pop_free(allcerts, X509_free);
+			}
 		}
 
 	if (rctfile)
diff --git a/doc/apps/cms.pod b/doc/apps/cms.pod
index b2505c6..9690194 100644
--- a/doc/apps/cms.pod
+++ b/doc/apps/cms.pod
@@ -55,6 +55,7 @@
 [B<-binary>]
 [B<-nodetach>]
 [B<-certfile file>]
+[B<-certsout file>]
 [B<-signer file>]
 [B<-recip file>]
 [B<-keyid>]
@@ -312,6 +313,10 @@
 be included with the message. When verifying these will be searched for
 the signers certificates. The certificates should be in PEM format.
 
+=item B<-certsout file>
+
+any certificates contained in to the message are written to B<file>.
+
 =item B<-signer file>
 
 a signing certificate when signing or resigning a message, this option can be
diff --git a/test/cms-examples.pl b/test/cms-examples.pl
index 62290db..2e95b48 100644
--- a/test/cms-examples.pl
+++ b/test/cms-examples.pl
@@ -78,17 +78,17 @@
 my @test_list = (
     [ "3.1.bin"  => "dataout" ],
     [ "3.2.bin"  => "encode, dataout" ],
-    [ "4.1.bin"  => "encode, verifyder, content, dss" ],
+    [ "4.1.bin"  => "encode, verifyder, cont, dss" ],
     [ "4.2.bin"  => "encode, verifyder, cont, rsa" ],
     [ "4.3.bin"  => "encode, verifyder, cont_extern, dss" ],
     [ "4.4.bin"  => "encode, verifyder, cont, dss" ],
-    [ "4.5.bin"  => "verifyder, content, rsa" ],
+    [ "4.5.bin"  => "verifyder, cont, rsa" ],
     [ "4.6.bin"  => "encode, verifyder, cont, dss" ],
     [ "4.7.bin"  => "encode, verifyder, cont, dss" ],
     [ "4.8.eml"  => "verifymime, dss" ],
     [ "4.9.eml"  => "verifymime, dss" ],
     [ "4.10.bin" => "encode, verifyder, cont, dss" ],
-    [ "4.11.bin" => "encode" ],
+    [ "4.11.bin" => "encode, certsout" ],
     [ "5.1.bin"  => "encode, envelopeder, cont" ],
     [ "5.2.bin"  => "encode, envelopeder, cont" ],
     [ "5.3.eml"  => "envelopemime, cont" ],
@@ -151,6 +151,9 @@
     if ( $tlist =~ /encode/ ) {
         run_reencode_test( $exdir, $file );
     }
+    if ( $tlist =~ /certsout/ ) {
+        run_certsout_test( $exdir, $file );
+    }
     if ( $tlist =~ /dataout/ ) {
         run_dataout_test( $exdir, $file );
     }
@@ -216,6 +219,23 @@
     }
 }
 
+sub run_certsout_test {
+    my ( $cmsdir, $tfile ) = @_;
+    unlink "tmp.der";
+    unlink "tmp.pem";
+
+    system( "$cmscmd -cmsout -inform DER -certsout tmp.pem"
+          . " -in $cmsdir/$tfile -out tmp.der" );
+
+    if ($?) {
+        print "\tCertificate output command FAILED!!\n";
+        $badtest++;
+    }
+    else {
+        print "\tCertificate output passed\n" if $verbose;
+    }
+}
+
 sub run_dataout_test {
     my ( $cmsdir, $tfile ) = @_;
     unlink "tmp.txt";