/*
- * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2007 Hiroyuki Yamamoto
- * This file Copyright (C) 2002-2005 Colin Leroy <colin@colino.net>
+ * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
+ * Copyright (C) 1999-2007 Colin Leroy <colin@colino.net>
+ * and the Claws Mail team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
+#if (defined(USE_OPENSSL) || defined (USE_GNUTLS))
#if USE_OPENSSL
-
#include <openssl/ssl.h>
+#else
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <string.h>
+#endif
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <netdb.h>
#include <glib.h>
#include <glib/gi18n.h>
+#ifdef G_OS_WIN32
+#include "winsock2.h"
+#endif
#include "ssl_certificate.h"
#include "utils.h"
#include "log.h"
#include "socket.h"
#include "hooks.h"
+#include "defs.h"
static GHashTable *warned_expired = NULL;
host, ".", port, ".cert", NULL);
}
+#if USE_OPENSSL
static SSLCertificate *ssl_certificate_new_lookup(X509 *x509_cert, gchar *host, gushort port, gboolean lookup);
-
+#else
+static SSLCertificate *ssl_certificate_new_lookup(gnutls_x509_crt x509_cert, gchar *host, gushort port, gboolean lookup);
+#endif
+#if USE_OPENSSL
/* from Courier */
time_t asn1toTime(ASN1_TIME *asn1Time)
{
return mktime(&tm)-offset;
}
+#endif
static char * get_fqdn(char *host)
{
+#ifdef INET6
+ gint gai_err;
+ struct addrinfo hints, *res;
+#else
struct hostent *hp;
+#endif
if (host == NULL || strlen(host) == 0)
return g_strdup("");
-
+#ifdef INET6
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_flags = AI_CANONNAME;
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_protocol = IPPROTO_TCP;
+
+ gai_err = getaddrinfo(host, NULL, &hints, &res);
+ if (gai_err != 0) {
+ g_warning("getaddrinfo for %s failed: %s\n",
+ host, gai_strerror(gai_err));
+ return g_strdup(host);
+ }
+ if (res != NULL) {
+ if (res->ai_canonname && strlen(res->ai_canonname)) {
+ gchar *fqdn = g_strdup(res->ai_canonname);
+ freeaddrinfo(res);
+ return fqdn;
+ } else {
+ freeaddrinfo(res);
+ return g_strdup(host);
+ }
+ } else {
+ return g_strdup(host);
+ }
+#else
hp = my_gethostbyname(host);
if (hp == NULL)
return g_strdup(host); /*caller should free*/
else
return g_strdup(hp->h_name);
+#endif
}
char * readable_fingerprint(unsigned char *src, int len)
return ret;
}
-SSLCertificate *ssl_certificate_new(X509 *x509_cert, gchar *host, gushort port)
+#if USE_GNUTLS
+static gnutls_x509_crt x509_crt_copy(gnutls_x509_crt src)
{
- return ssl_certificate_new_lookup(x509_cert, host, port, TRUE);
+ int ret;
+ size_t size;
+ gnutls_datum tmp;
+ gnutls_x509_crt dest;
+
+ if (gnutls_x509_crt_init(&dest) != 0) {
+ g_warning("couldn't gnutls_x509_crt_init\n");
+ return NULL;
+ }
+
+ if (gnutls_x509_crt_export(src, GNUTLS_X509_FMT_DER, NULL, &size)
+ != GNUTLS_E_SHORT_MEMORY_BUFFER) {
+ g_warning("couldn't gnutls_x509_crt_export to get size\n");
+ gnutls_x509_crt_deinit(dest);
+ return NULL;
+ }
+
+ tmp.data = malloc(size);
+ memset(tmp.data, 0, size);
+ ret = gnutls_x509_crt_export(src, GNUTLS_X509_FMT_DER, tmp.data, &size);
+ if (ret == 0) {
+ tmp.size = size;
+ ret = gnutls_x509_crt_import(dest, &tmp, GNUTLS_X509_FMT_DER);
+ if (ret) {
+ g_warning("couldn't gnutls_x509_crt_import for real (%d %s)\n", ret, gnutls_strerror(ret));
+ gnutls_x509_crt_deinit(dest);
+ dest = NULL;
+ }
+ } else {
+ g_warning("couldn't gnutls_x509_crt_export for real (%d %s)\n", ret, gnutls_strerror(ret));
+ gnutls_x509_crt_deinit(dest);
+ dest = NULL;
+ }
+
+ free(tmp.data);
+ return dest;
}
+#endif
+#if USE_OPENSSL
static SSLCertificate *ssl_certificate_new_lookup(X509 *x509_cert, gchar *host, gushort port, gboolean lookup)
+#else
+static SSLCertificate *ssl_certificate_new_lookup(gnutls_x509_crt x509_cert, gchar *host, gushort port, gboolean lookup)
+#endif
{
SSLCertificate *cert = g_new0(SSLCertificate, 1);
unsigned int n;
- unsigned char md[EVP_MAX_MD_SIZE];
-
+ unsigned char md[128];
+
if (host == NULL || x509_cert == NULL) {
ssl_certificate_destroy(cert);
return NULL;
}
+#if USE_OPENSSL
cert->x509_cert = X509_dup(x509_cert);
+#else
+ cert->x509_cert = x509_crt_copy(x509_cert);
+ cert->status = (guint)-1;
+#endif
if (lookup)
cert->host = get_fqdn(host);
else
cert->port = port;
/* fingerprint */
+#if USE_OPENSSL
X509_digest(cert->x509_cert, EVP_md5(), md, &n);
cert->fingerprint = readable_fingerprint(md, (int)n);
+#else
+ gnutls_x509_crt_get_fingerprint(cert->x509_cert, GNUTLS_DIG_MD5, md, &n);
+ cert->fingerprint = readable_fingerprint(md, (int)n);
+#endif
+ return cert;
+}
+#ifdef USE_GNUTLS
+static void i2d_X509_fp(FILE *fp, gnutls_x509_crt x509_cert)
+{
+ char output[10*1024];
+ size_t cert_size = 10*1024;
+ int r;
+
+ if ((r = gnutls_x509_crt_export(x509_cert, GNUTLS_X509_FMT_DER, output, &cert_size)) < 0) {
+ g_warning("couldn't export cert %s (%d)\n", gnutls_strerror(r), cert_size);
+ return;
+ }
+ debug_print("writing %zd bytes\n",cert_size);
+ if (fwrite(&output, 1, cert_size, fp) < cert_size) {
+ g_warning("failed to write cert\n");
+ }
+}
+static gnutls_x509_crt d2i_X509_fp(FILE *fp, int unused)
+{
+ gnutls_x509_crt cert = NULL;
+ gnutls_datum tmp;
+ struct stat s;
+ int r;
+ if (fstat(fileno(fp), &s) < 0) {
+ perror("fstat");
+ return NULL;
+ }
+ tmp.data = malloc(s.st_size);
+ memset(tmp.data, 0, s.st_size);
+ tmp.size = s.st_size;
+ if (fread (tmp.data, 1, s.st_size, fp) < s.st_size) {
+ perror("fread");
+ return NULL;
+ }
+
+ gnutls_x509_crt_init(&cert);
+ if ((r = gnutls_x509_crt_import(cert, &tmp, GNUTLS_X509_FMT_DER)) < 0) {
+ g_warning("import failed: %s\n", gnutls_strerror(r));
+ gnutls_x509_crt_deinit(cert);
+ cert = NULL;
+ }
+ debug_print("got cert! %p\n", cert);
return cert;
}
+#endif
static void ssl_certificate_save (SSLCertificate *cert)
{
}
-char* ssl_certificate_to_string(SSLCertificate *cert)
-{
- char *ret, buf[100];
- char *issuer_commonname, *issuer_location, *issuer_organization;
- char *subject_commonname, *subject_location, *subject_organization;
- char *fingerprint, *sig_status;
- unsigned int n;
- unsigned char md[EVP_MAX_MD_SIZE];
-
- /* issuer */
- if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
- NID_commonName, buf, 100) >= 0)
- issuer_commonname = g_strdup(buf);
- else
- issuer_commonname = g_strdup(_("<not in certificate>"));
- if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
- NID_localityName, buf, 100) >= 0) {
- issuer_location = g_strdup(buf);
- if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
- NID_countryName, buf, 100) >= 0)
- issuer_location = g_strconcat(issuer_location,", ",buf, NULL);
- } else if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
- NID_countryName, buf, 100) >= 0)
- issuer_location = g_strdup(buf);
- else
- issuer_location = g_strdup(_("<not in certificate>"));
-
- if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
- NID_organizationName, buf, 100) >= 0)
- issuer_organization = g_strdup(buf);
- else
- issuer_organization = g_strdup(_("<not in certificate>"));
-
- /* subject */
- if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
- NID_commonName, buf, 100) >= 0)
- subject_commonname = g_strdup(buf);
- else
- subject_commonname = g_strdup(_("<not in certificate>"));
- if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
- NID_localityName, buf, 100) >= 0) {
- subject_location = g_strdup(buf);
- if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
- NID_countryName, buf, 100) >= 0)
- subject_location = g_strconcat(subject_location,", ",buf, NULL);
- } else if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
- NID_countryName, buf, 100) >= 0)
- subject_location = g_strdup(buf);
- else
- subject_location = g_strdup(_("<not in certificate>"));
-
- if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
- NID_organizationName, buf, 100) >= 0)
- subject_organization = g_strdup(buf);
- else
- subject_organization = g_strdup(_("<not in certificate>"));
-
- /* fingerprint */
- X509_digest(cert->x509_cert, EVP_md5(), md, &n);
- fingerprint = readable_fingerprint(md, (int)n);
-
- /* signature */
- sig_status = ssl_certificate_check_signer(cert->x509_cert);
-
- ret = g_strdup_printf(_(" Owner: %s (%s) in %s\n Signed by: %s (%s) in %s\n Fingerprint: %s\n Signature status: %s"),
- subject_commonname, subject_organization, subject_location,
- issuer_commonname, issuer_organization, issuer_location,
- fingerprint,
- (sig_status==NULL ? "correct":sig_status));
-
- g_free(issuer_commonname);
- g_free(issuer_location);
- g_free(issuer_organization);
- g_free(subject_commonname);
- g_free(subject_location);
- g_free(subject_organization);
- g_free(fingerprint);
- g_free(sig_status);
- return ret;
-}
-
void ssl_certificate_destroy(SSLCertificate *cert)
{
if (cert == NULL)
return;
if (cert->x509_cert)
+#if USE_OPENSSL
X509_free(cert->x509_cert);
+#else
+ gnutls_x509_crt_deinit(cert->x509_cert);
+#endif
g_free(cert->host);
g_free(cert->fingerprint);
g_free(cert);
gchar *buf;
gchar *fqdn_host;
SSLCertificate *cert = NULL;
+#if USE_OPENSSL
X509 *tmp_x509;
+#else
+ gnutls_x509_crt tmp_x509;
+#endif
FILE *fp = NULL;
gboolean must_rename = FALSE;
}
if (fp == NULL) {
/* see if we have the old one */
+ debug_print("didn't get %s\n", file);
g_free(file);
file = get_certificate_path(fqdn_host, buf, NULL);
fp = g_fopen(file, "rb");
- if (fp)
+ if (fp) {
+ debug_print("got %s\n", file);
must_rename = (fingerprint != NULL);
+ }
+ } else {
+ debug_print("got %s first try\n", file);
}
if (fp == NULL) {
g_free(file);
if ((tmp_x509 = d2i_X509_fp(fp, 0)) != NULL) {
cert = ssl_certificate_new_lookup(tmp_x509, fqdn_host, port, lookup);
+ debug_print("got cert %p\n", cert);
+#if USE_OPENSSL
X509_free(tmp_x509);
+#else
+ gnutls_x509_crt_deinit(tmp_x509);
+#endif
}
fclose(fp);
g_free(file);
static gboolean ssl_certificate_compare (SSLCertificate *cert_a, SSLCertificate *cert_b)
{
- if (cert_a == NULL || cert_b == NULL)
- return FALSE;
+#ifdef USE_OPENSSL
+ if (cert_a == NULL || cert_b == NULL)
+ return FALSE;
else if (!X509_cmp(cert_a->x509_cert, cert_b->x509_cert))
return TRUE;
else
return FALSE;
+#else
+ char *output_a;
+ char *output_b;
+ size_t cert_size_a = 0, cert_size_b = 0;
+ int r;
+
+ if (cert_a == NULL || cert_b == NULL)
+ return FALSE;
+
+ if ((r = gnutls_x509_crt_export(cert_a->x509_cert, GNUTLS_X509_FMT_DER, NULL, &cert_size_a))
+ != GNUTLS_E_SHORT_MEMORY_BUFFER) {
+ g_warning("couldn't gnutls_x509_crt_export to get size a %s\n", gnutls_strerror(r));
+ return FALSE;
+ }
+
+ if ((r = gnutls_x509_crt_export(cert_b->x509_cert, GNUTLS_X509_FMT_DER, NULL, &cert_size_b))
+ != GNUTLS_E_SHORT_MEMORY_BUFFER) {
+ g_warning("couldn't gnutls_x509_crt_export to get size b %s\n", gnutls_strerror(r));
+ return FALSE;
+ }
+
+ output_a = malloc(cert_size_a);
+ output_b = malloc(cert_size_b);
+ if ((r = gnutls_x509_crt_export(cert_a->x509_cert, GNUTLS_X509_FMT_DER, output_a, &cert_size_a)) < 0) {
+ g_warning("couldn't gnutls_x509_crt_export a %s\n", gnutls_strerror(r));
+ return FALSE;
+ }
+ if ((r = gnutls_x509_crt_export(cert_b->x509_cert, GNUTLS_X509_FMT_DER, output_b, &cert_size_b)) < 0) {
+ g_warning("couldn't gnutls_x509_crt_export b %s\n", gnutls_strerror(r));
+ return FALSE;
+ }
+ if (cert_size_a != cert_size_b) {
+ g_warning("size differ %d %d\n", cert_size_a, cert_size_b);
+ return FALSE;
+ }
+ if (memcmp(output_a, output_b, cert_size_a)) {
+ g_warning("contents differ\n");
+ return FALSE;
+ }
+
+ return TRUE;
+#endif
}
+#if USE_OPENSSL
char *ssl_certificate_check_signer (X509 *cert)
{
X509_STORE_CTX store_ctx;
store = X509_STORE_new();
if (store == NULL) {
- printf("Can't create X509_STORE\n");
+ g_print("Can't create X509_STORE\n");
return NULL;
}
if (!X509_STORE_set_default_paths(store)) {
X509_STORE_free (store);
return NULL;
}
+#else
+char *ssl_certificate_check_signer (gnutls_x509_crt cert, guint status)
+{
+ if (status == (guint)-1)
+ return g_strdup(_("Uncheckable"));
+
+ if (status & GNUTLS_CERT_INVALID) {
+ if (gnutls_x509_crt_check_issuer(cert, cert))
+ return g_strdup(_("Self-signed certificate"));
+ }
+ if (status & GNUTLS_CERT_REVOKED)
+ return g_strdup(_("Revoked certificate"));
+ if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
+ return g_strdup(_("No certificate issuer found"));
+ if (status & GNUTLS_CERT_SIGNER_NOT_CA)
+ return g_strdup(_("Certificate issuer is not a CA"));
+
+
+ return NULL;
+}
+#endif
+#if USE_OPENSSL
gboolean ssl_certificate_check (X509 *x509_cert, gchar *fqdn, gchar *host, gushort port)
+#else
+gboolean ssl_certificate_check (gnutls_x509_crt x509_cert, guint status, gchar *fqdn, gchar *host, gushort port)
+#endif
{
SSLCertificate *current_cert = NULL;
SSLCertificate *known_cert;
gchar *fqdn_host = NULL;
gchar *fingerprint;
unsigned int n;
- unsigned char md[EVP_MAX_MD_SIZE];
+ unsigned char md[128];
if (fqdn)
fqdn_host = g_strdup(fqdn);
return FALSE;
}
+#if USE_GNUTLS
+ current_cert->status = status;
+#endif
/* fingerprint */
+#if USE_OPENSSL
X509_digest(x509_cert, EVP_md5(), md, &n);
fingerprint = readable_fingerprint(md, (int)n);
+#else
+ n = 128;
+ gnutls_x509_crt_get_fingerprint(x509_cert, GNUTLS_DIG_MD5, md, &n);
+ fingerprint = readable_fingerprint(md, (int)n);
+#endif
known_cert = ssl_certificate_find_lookup (fqdn_host, port, fingerprint, FALSE);
ssl_certificate_destroy(known_cert);
return TRUE;
}
+#if USE_OPENSSL
} else if (asn1toTime(X509_get_notAfter(current_cert->x509_cert)) < time(NULL)) {
+#else
+ } else if (gnutls_x509_crt_get_expiration_time(current_cert->x509_cert) < time(NULL)) {
+#endif
gchar *tmp = g_strdup_printf("%s:%d", current_cert->host, current_cert->port);
if (warned_expired == NULL)
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