1 files changed, 374 insertions, 177 deletions

diff --git a/crypto/openssl/apps/smime.c b/crypto/openssl/apps/smime.c
index 51bc893ffa8a..250fd69a981b 100644
--- a/crypto/openssl/apps/smime.c
+++ b/crypto/openssl/apps/smime.c
@@ -1,9 +1,9 @@
 /* smime.c */
 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999.
+ * project.
  */
 /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -64,10 +64,13 @@
 #include <openssl/crypto.h>
 #include <openssl/pem.h>
 #include <openssl/err.h>
+#include <openssl/x509_vfy.h>
+#include <openssl/x509v3.h>
 
 #undef PROG
 #define PROG smime_main
 static int save_certs(char *signerfile, STACK_OF(X509) *signers);
+static int smime_cb(int ok, X509_STORE_CTX *ctx);
 
 #define SMIME_OP	0x10
 #define SMIME_ENCRYPT	(1 | SMIME_OP)
@@ -79,12 +82,12 @@ static int save_certs(char *signerfile, STACK_OF(X509) *signers);
 int MAIN(int, char **);
 
 int MAIN(int argc, char **argv)
-{
+	{
 	ENGINE *e = NULL;
 	int operation = 0;
 	int ret = 0;
 	char **args;
-	char *inmode = "r", *outmode = "w";
+	const char *inmode = "r", *outmode = "w";
 	char *infile = NULL, *outfile = NULL;
 	char *signerfile = NULL, *recipfile = NULL;
 	char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
@@ -96,7 +99,7 @@ int MAIN(int argc, char **argv)
 	STACK_OF(X509) *encerts = NULL, *other = NULL;
 	BIO *in = NULL, *out = NULL, *indata = NULL;
 	int badarg = 0;
-	int flags = PKCS7_DETACHED, store_flags = 0;
+	int flags = PKCS7_DETACHED;
 	char *to = NULL, *from = NULL, *subject = NULL;
 	char *CAfile = NULL, *CApath = NULL;
 	char *passargin = NULL, *passin = NULL;
@@ -108,24 +111,34 @@ int MAIN(int argc, char **argv)
 	char *engine=NULL;
 #endif
 
+	X509_VERIFY_PARAM *vpm = NULL;
+
 	args = argv + 1;
 	ret = 1;
 
 	apps_startup();
 
 	if (bio_err == NULL)
+		{
 		if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 			BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
+		}
 
 	if (!load_config(bio_err, NULL))
 		goto end;
 
-	while (!badarg && *args && *args[0] == '-') {
-		if (!strcmp (*args, "-encrypt")) operation = SMIME_ENCRYPT;
-		else if (!strcmp (*args, "-decrypt")) operation = SMIME_DECRYPT;
-		else if (!strcmp (*args, "-sign")) operation = SMIME_SIGN;
-		else if (!strcmp (*args, "-verify")) operation = SMIME_VERIFY;
-		else if (!strcmp (*args, "-pk7out")) operation = SMIME_PK7OUT;
+	while (!badarg && *args && *args[0] == '-')
+		{
+		if (!strcmp (*args, "-encrypt"))
+			operation = SMIME_ENCRYPT;
+		else if (!strcmp (*args, "-decrypt"))
+			operation = SMIME_DECRYPT;
+		else if (!strcmp (*args, "-sign"))
+			operation = SMIME_SIGN;
+		else if (!strcmp (*args, "-verify"))
+			operation = SMIME_VERIFY;
+		else if (!strcmp (*args, "-pk7out"))
+			operation = SMIME_PK7OUT;
 #ifndef OPENSSL_NO_DES
 		else if (!strcmp (*args, "-des3")) 
 				cipher = EVP_des_ede3_cbc();
@@ -172,127 +185,225 @@ int MAIN(int argc, char **argv)
 				flags |= PKCS7_NOOLDMIMETYPE;
 		else if (!strcmp (*args, "-crlfeol"))
 				flags |= PKCS7_CRLFEOL;
-		else if (!strcmp (*args, "-crl_check"))
-				store_flags |= X509_V_FLAG_CRL_CHECK;
-		else if (!strcmp (*args, "-crl_check_all"))
-				store_flags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
-		else if (!strcmp(*args,"-rand")) {
-			if (args[1]) {
+		else if (!strcmp(*args,"-rand"))
+			{
+			if (args[1])
+				{
 				args++;
 				inrand = *args;
-			} else badarg = 1;
+				}
+			else
+				badarg = 1;
 			need_rand = 1;
+			}
 #ifndef OPENSSL_NO_ENGINE
-		} else if (!strcmp(*args,"-engine")) {
-			if (args[1]) {
+		else if (!strcmp(*args,"-engine"))
+			{
+			if (args[1])
+				{
 				args++;
 				engine = *args;
-			} else badarg = 1;
+				}
+			else badarg = 1;
+			}
 #endif
-		} else if (!strcmp(*args,"-passin")) {
-			if (args[1]) {
+		else if (!strcmp(*args,"-passin"))
+			{
+			if (args[1])
+				{
 				args++;
 				passargin = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-to")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-to"))
+			{
+			if (args[1])
+				{
 				args++;
 				to = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-from")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-from"))
+			{
+			if (args[1])
+				{
 				args++;
 				from = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-subject")) {
-			if (args[1]) {
+				}
+			else badarg = 1;
+			}
+		else if (!strcmp (*args, "-subject"))
+			{
+			if (args[1])
+				{
 				args++;
 				subject = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-signer")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-signer"))
+			{
+			if (args[1])
+				{
 				args++;
 				signerfile = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-recip")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-recip"))
+			{
+			if (args[1])
+				{
 				args++;
 				recipfile = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-inkey")) {
-			if (args[1]) {
+				}
+			else badarg = 1;
+			}
+		else if (!strcmp (*args, "-inkey"))
+			{
+			if (args[1])
+				{
 				args++;
 				keyfile = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-keyform")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+		}
+		else if (!strcmp (*args, "-keyform"))
+			{
+			if (args[1])
+				{
 				args++;
 				keyform = str2fmt(*args);
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-certfile")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-certfile"))
+			{
+			if (args[1])
+				{
 				args++;
 				certfile = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-CAfile")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-CAfile"))
+			{
+			if (args[1])
+				{
 				args++;
 				CAfile = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-CApath")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-CApath"))
+			{
+			if (args[1])
+				{
 				args++;
 				CApath = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-in")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-in"))
+			{
+			if (args[1])
+				{
 				args++;
 				infile = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-inform")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-inform"))
+			{
+			if (args[1])
+				{
 				args++;
 				informat = str2fmt(*args);
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-outform")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-outform"))
+			{
+			if (args[1])
+				{
 				args++;
 				outformat = str2fmt(*args);
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-out")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-out"))
+			{
+			if (args[1])
+				{
 				args++;
 				outfile = *args;
-			} else badarg = 1;
-		} else if (!strcmp (*args, "-content")) {
-			if (args[1]) {
+				}
+			else
+				badarg = 1;
+			}
+		else if (!strcmp (*args, "-content"))
+			{
+			if (args[1])
+				{
 				args++;
 				contfile = *args;
-			} else badarg = 1;
-		} else badarg = 1;
+				}
+			else
+				badarg = 1;
+			}
+		else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
+			continue;
+		else
+			badarg = 1;
 		args++;
-	}
+		}
 
-	if(operation == SMIME_SIGN) {
-		if(!signerfile) {
+
+	if (operation == SMIME_SIGN)
+		{
+		if (!signerfile)
+			{
 			BIO_printf(bio_err, "No signer certificate specified\n");
 			badarg = 1;
-		}
+			}
 		need_rand = 1;
-	} else if(operation == SMIME_DECRYPT) {
-		if(!recipfile) {
-			BIO_printf(bio_err, "No recipient certificate and key specified\n");
+		}
+	else if (operation == SMIME_DECRYPT)
+		{
+		if (!recipfile && !keyfile)
+			{
+			BIO_printf(bio_err, "No recipient certificate or key specified\n");
 			badarg = 1;
+			}
 		}
-	} else if(operation == SMIME_ENCRYPT) {
-		if(!*args) {
+	else if (operation == SMIME_ENCRYPT)
+		{
+		if (!*args)
+			{
 			BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
 			badarg = 1;
-		}
+			}
 		need_rand = 1;
-	} else if(!operation) badarg = 1;
+		}
+	else if (!operation)
+		badarg = 1;
 
-	if (badarg) {
+	if (badarg)
+		{
 		BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
 		BIO_printf (bio_err, "where options are\n");
 		BIO_printf (bio_err, "-encrypt       encrypt message\n");
@@ -347,121 +458,155 @@ int MAIN(int argc, char **argv)
 		BIO_printf(bio_err,  "               the random number generator\n");
 		BIO_printf (bio_err, "cert.pem       recipient certificate(s) for encryption\n");
 		goto end;
-	}
+		}
 
 #ifndef OPENSSL_NO_ENGINE
         e = setup_engine(bio_err, engine, 0);
 #endif
 
-	if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
+	if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))
+		{
 		BIO_printf(bio_err, "Error getting password\n");
 		goto end;
-	}
+		}
 
-	if (need_rand) {
+	if (need_rand)
+		{
 		app_RAND_load_file(NULL, bio_err, (inrand != NULL));
 		if (inrand != NULL)
 			BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
 				app_RAND_load_files(inrand));
-	}
+		}
 
 	ret = 2;
 
-	if(operation != SMIME_SIGN) flags &= ~PKCS7_DETACHED;
+	if (operation != SMIME_SIGN)
+		flags &= ~PKCS7_DETACHED;
 
-	if(operation & SMIME_OP) {
-		if(flags & PKCS7_BINARY) inmode = "rb";
-		if(outformat == FORMAT_ASN1) outmode = "wb";
-	} else {
-		if(flags & PKCS7_BINARY) outmode = "wb";
-		if(informat == FORMAT_ASN1) inmode = "rb";
-	}
+	if (operation & SMIME_OP)
+		{
+		if (flags & PKCS7_BINARY)
+			inmode = "rb";
+		if (outformat == FORMAT_ASN1)
+			outmode = "wb";
+		}
+	else
+		{
+		if (flags & PKCS7_BINARY)
+			outmode = "wb";
+		if (informat == FORMAT_ASN1)
+			inmode = "rb";
+		}
 
-	if(operation == SMIME_ENCRYPT) {
-		if (!cipher) {
+	if (operation == SMIME_ENCRYPT)
+		{
+		if (!cipher)
+			{
 #ifndef OPENSSL_NO_RC2			
 			cipher = EVP_rc2_40_cbc();
 #else
 			BIO_printf(bio_err, "No cipher selected\n");
 			goto end;
 #endif
-		}
+			}
 		encerts = sk_X509_new_null();
-		while (*args) {
-			if(!(cert = load_cert(bio_err,*args,FORMAT_PEM,
-				NULL, e, "recipient certificate file"))) {
+		while (*args)
+			{
+			if (!(cert = load_cert(bio_err,*args,FORMAT_PEM,
+				NULL, e, "recipient certificate file")))
+				{
 #if 0				/* An appropriate message is already printed */
 				BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
 #endif
 				goto end;
-			}
+				}
 			sk_X509_push(encerts, cert);
 			cert = NULL;
 			args++;
+			}
 		}
-	}
 
-	if(signerfile && (operation == SMIME_SIGN)) {
-		if(!(signer = load_cert(bio_err,signerfile,FORMAT_PEM, NULL,
-			e, "signer certificate"))) {
+	if (signerfile && (operation == SMIME_SIGN))
+		{
+		if (!(signer = load_cert(bio_err,signerfile,FORMAT_PEM, NULL,
+			e, "signer certificate")))
+			{
 #if 0			/* An appropri message has already been printed */
 			BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
 #endif
 			goto end;
+			}
 		}
-	}
 
-	if(certfile) {
-		if(!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
-			e, "certificate file"))) {
+	if (certfile)
+		{
+		if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
+			e, "certificate file")))
+			{
 #if 0			/* An appropriate message has already been printed */
 			BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
 #endif
 			ERR_print_errors(bio_err);
 			goto end;
+			}
 		}
-	}
 
-	if(recipfile && (operation == SMIME_DECRYPT)) {
-		if(!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
-			e, "recipient certificate file"))) {
+	if (recipfile && (operation == SMIME_DECRYPT))
+		{
+		if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
+			e, "recipient certificate file")))
+			{
 #if 0			/* An appropriate message has alrady been printed */
 			BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
 #endif
 			ERR_print_errors(bio_err);
 			goto end;
+			}
 		}
-	}
 
-	if(operation == SMIME_DECRYPT) {
-		if(!keyfile) keyfile = recipfile;
-	} else if(operation == SMIME_SIGN) {
-		if(!keyfile) keyfile = signerfile;
-	} else keyfile = NULL;
+	if (operation == SMIME_DECRYPT)
+		{
+		if (!keyfile)
+			keyfile = recipfile;
+		}
+	else if (operation == SMIME_SIGN)
+		{
+		if (!keyfile)
+			keyfile = signerfile;
+		}
+	else keyfile = NULL;
 
-	if(keyfile) {
+	if (keyfile)
+		{
 		key = load_key(bio_err, keyfile, keyform, 0, passin, e,
 			       "signing key file");
-		if (!key) {
+		if (!key)
 			goto end;
-                }
-	}
+		}
 
-	if (infile) {
-		if (!(in = BIO_new_file(infile, inmode))) {
+	if (infile)
+		{
+		if (!(in = BIO_new_file(infile, inmode)))
+			{
 			BIO_printf (bio_err,
 				 "Can't open input file %s\n", infile);
 			goto end;
+			}
 		}
-	} else in = BIO_new_fp(stdin, BIO_NOCLOSE);
+	else
+		in = BIO_new_fp(stdin, BIO_NOCLOSE);
 
-	if (outfile) {
-		if (!(out = BIO_new_file(outfile, outmode))) {
+	if (outfile)
+		{
+		if (!(out = BIO_new_file(outfile, outmode)))
+			{
 			BIO_printf (bio_err,
 				 "Can't open output file %s\n", outfile);
 			goto end;
+			}
 		}
-	} else {
+	else
+		{
 		out = BIO_new_fp(stdout, BIO_NOCLOSE);
 #ifdef OPENSSL_SYS_VMS
 		{
@@ -469,100 +614,133 @@ int MAIN(int argc, char **argv)
 		    out = BIO_push(tmpbio, out);
 		}
 #endif
-	}
+		}
 
-	if(operation == SMIME_VERIFY) {
-		if(!(store = setup_verify(bio_err, CAfile, CApath))) goto end;
-		X509_STORE_set_flags(store, store_flags);
-	}
+	if (operation == SMIME_VERIFY)
+		{
+		if (!(store = setup_verify(bio_err, CAfile, CApath)))
+			goto end;
+		X509_STORE_set_verify_cb_func(store, smime_cb);
+		if (vpm)
+			X509_STORE_set1_param(store, vpm);
+		}
 
 
 	ret = 3;
 
-	if(operation == SMIME_ENCRYPT) {
+	if (operation == SMIME_ENCRYPT)
 		p7 = PKCS7_encrypt(encerts, in, cipher, flags);
-	} else if(operation == SMIME_SIGN) {
+	else if (operation == SMIME_SIGN)
+		{
+		/* If detached data and SMIME output enable partial
+		 * signing.
+		 */
+		if ((flags & PKCS7_DETACHED) && (outformat == FORMAT_SMIME))
+			flags |= PKCS7_STREAM;
 		p7 = PKCS7_sign(signer, key, other, in, flags);
-		if (BIO_reset(in) != 0 && (flags & PKCS7_DETACHED)) {
-		  BIO_printf(bio_err, "Can't rewind input file\n");
-		  goto end;
+		/* Don't need to rewind for partial signing */
+		if (!(flags & PKCS7_STREAM) && (BIO_reset(in) != 0))
+			{
+			BIO_printf(bio_err, "Can't rewind input file\n");
+			goto end;
+			}
 		}
-	} else {
-		if(informat == FORMAT_SMIME) 
+	else
+		{
+		if (informat == FORMAT_SMIME) 
 			p7 = SMIME_read_PKCS7(in, &indata);
-		else if(informat == FORMAT_PEM) 
+		else if (informat == FORMAT_PEM) 
 			p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
-		else if(informat == FORMAT_ASN1) 
+		else if (informat == FORMAT_ASN1) 
 			p7 = d2i_PKCS7_bio(in, NULL);
-		else {
+		else
+			{
 			BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
 			goto end;
-		}
+			}
 
-		if(!p7) {
+		if (!p7)
+			{
 			BIO_printf(bio_err, "Error reading S/MIME message\n");
 			goto end;
-		}
-		if(contfile) {
+			}
+		if (contfile)
+			{
 			BIO_free(indata);
-			if(!(indata = BIO_new_file(contfile, "rb"))) {
+			if (!(indata = BIO_new_file(contfile, "rb")))
+				{
 				BIO_printf(bio_err, "Can't read content file %s\n", contfile);
 				goto end;
+				}
 			}
 		}
-	}
 
-	if(!p7) {
+	if (!p7)
+		{
 		BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
 		goto end;
-	}
+		}
 
 	ret = 4;
-	if(operation == SMIME_DECRYPT) {
-		if(!PKCS7_decrypt(p7, key, recip, out, flags)) {
+	if (operation == SMIME_DECRYPT)
+		{
+		if (!PKCS7_decrypt(p7, key, recip, out, flags))
+			{
 			BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
 			goto end;
+			}
 		}
-	} else if(operation == SMIME_VERIFY) {
+	else if (operation == SMIME_VERIFY)
+		{
 		STACK_OF(X509) *signers;
-		if(PKCS7_verify(p7, other, store, indata, out, flags)) {
+		if (PKCS7_verify(p7, other, store, indata, out, flags))
 			BIO_printf(bio_err, "Verification successful\n");
-		} else {
+		else
+			{
 			BIO_printf(bio_err, "Verification failure\n");
 			goto end;
-		}
+			}
 		signers = PKCS7_get0_signers(p7, other, flags);
-		if(!save_certs(signerfile, signers)) {
+		if (!save_certs(signerfile, signers))
+			{
 			BIO_printf(bio_err, "Error writing signers to %s\n",
 								signerfile);
 			ret = 5;
 			goto end;
-		}
+			}
 		sk_X509_free(signers);
-	} else if(operation == SMIME_PK7OUT) {
+		}
+	else if (operation == SMIME_PK7OUT)
 		PEM_write_bio_PKCS7(out, p7);
-	} else {
-		if(to) BIO_printf(out, "To: %s\n", to);
-		if(from) BIO_printf(out, "From: %s\n", from);
-		if(subject) BIO_printf(out, "Subject: %s\n", subject);
-		if(outformat == FORMAT_SMIME) 
+	else
+		{
+		if (to)
+			BIO_printf(out, "To: %s\n", to);
+		if (from)
+			BIO_printf(out, "From: %s\n", from);
+		if (subject)
+			BIO_printf(out, "Subject: %s\n", subject);
+		if (outformat == FORMAT_SMIME) 
 			SMIME_write_PKCS7(out, p7, in, flags);
-		else if(outformat == FORMAT_PEM) 
+		else if (outformat == FORMAT_PEM) 
 			PEM_write_bio_PKCS7(out,p7);
-		else if(outformat == FORMAT_ASN1) 
+		else if (outformat == FORMAT_ASN1) 
 			i2d_PKCS7_bio(out,p7);
-		else {
+		else
+			{
 			BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
 			goto end;
+			}
 		}
-	}
 	ret = 0;
 end:
 	if (need_rand)
 		app_RAND_write_file(NULL, bio_err);
-	if(ret) ERR_print_errors(bio_err);
+	if (ret) ERR_print_errors(bio_err);
 	sk_X509_pop_free(encerts, X509_free);
 	sk_X509_pop_free(other, X509_free);
+	if (vpm)
+		X509_VERIFY_PARAM_free(vpm);
 	X509_STORE_free(store);
 	X509_free(cert);
 	X509_free(recip);
@@ -572,20 +750,39 @@ end:
 	BIO_free(in);
 	BIO_free(indata);
 	BIO_free_all(out);
-	if(passin) OPENSSL_free(passin);
+	if (passin) OPENSSL_free(passin);
 	return (ret);
 }
 
 static int save_certs(char *signerfile, STACK_OF(X509) *signers)
-{
+	{
 	int i;
 	BIO *tmp;
-	if(!signerfile) return 1;
+	if (!signerfile)
+		return 1;
 	tmp = BIO_new_file(signerfile, "w");
-	if(!tmp) return 0;
+	if (!tmp) return 0;
 	for(i = 0; i < sk_X509_num(signers); i++)
 		PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
 	BIO_free(tmp);
 	return 1;
-}
+	}
 	
+
+/* Minimal callback just to output policy info (if any) */
+
+static int smime_cb(int ok, X509_STORE_CTX *ctx)
+	{
+	int error;
+
+	error = X509_STORE_CTX_get_error(ctx);
+
+	if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
+		&& ((error != X509_V_OK) || (ok != 2)))
+		return ok;
+
+	policies_print(NULL, ctx);
+
+	return ok;
+
+	}