#ifdef HAVE_CONFIG_H
# include "config.h"
+#include "claws-features.h"
#endif
#ifdef USE_GNUTLS
#include <stdio.h>
#include <glib.h>
#include <glib/gi18n.h>
+#include <errno.h>
#ifdef G_OS_WIN32
# include <winsock2.h>
#else
host, ".", port, ".cert", NULL);
}
+static gchar *get_certificate_chain_path(const gchar *host, const gchar *port, const gchar *fp)
+{
+ gchar *tmp = get_certificate_path(host, port, fp);
+ gchar *result = g_strconcat(tmp, ".chain", NULL);
+
+ g_free(tmp);
+
+ return result;
+}
+
char * readable_fingerprint(unsigned char *src, int len)
{
int i=0;
}
#if USE_GNUTLS
-static gnutls_x509_crt x509_crt_copy(gnutls_x509_crt src)
+static gnutls_x509_crt_t x509_crt_copy(gnutls_x509_crt_t src)
{
int ret;
size_t size;
- gnutls_datum tmp;
- gnutls_x509_crt dest;
+ gnutls_datum_t tmp;
+ gnutls_x509_crt_t dest;
+ size = 0;
if (gnutls_x509_crt_init(&dest) != 0) {
g_warning("couldn't gnutls_x509_crt_init\n");
}
#endif
-static SSLCertificate *ssl_certificate_new(gnutls_x509_crt x509_cert, const gchar *host, gushort port)
+static SSLCertificate *ssl_certificate_new(gnutls_x509_crt_t x509_cert, const gchar *host, gushort port)
{
SSLCertificate *cert = g_new0(SSLCertificate, 1);
size_t n;
return cert;
}
-#ifdef USE_GNUTLS
-static void gnutls_i2d_X509_fp(FILE *fp, gnutls_x509_crt x509_cert)
+static void gnutls_export_X509_fp(FILE *fp, gnutls_x509_crt_t x509_cert, gnutls_x509_crt_fmt_t format)
{
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) {
+ if ((r = gnutls_x509_crt_export(x509_cert, format, output, &cert_size)) < 0) {
g_warning("couldn't export cert %s (%zd)\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");
+ g_warning("failed to write cert: %d %s\n", errno, strerror(errno));
}
}
-size_t gnutls_i2d_X509(gnutls_x509_crt x509_cert, unsigned char **output)
+size_t gnutls_i2d_X509(gnutls_x509_crt_t x509_cert, unsigned char **output)
{
size_t cert_size = 10*1024;
int r;
return cert_size;
}
-size_t gnutls_i2d_PrivateKey(gnutls_x509_privkey pkey, unsigned char **output)
+size_t gnutls_i2d_PrivateKey(gnutls_x509_privkey_t pkey, unsigned char **output)
{
size_t key_size = 10*1024;
int r;
return key_size;
}
-static gnutls_x509_crt gnutls_d2i_X509_fp(FILE *fp, int format)
+static int gnutls_import_X509_list_fp(FILE *fp, gnutls_x509_crt_fmt_t format,
+ gnutls_x509_crt_t **cert_list, gint *num_certs)
{
- gnutls_x509_crt cert = NULL;
- gnutls_datum tmp;
+ gnutls_x509_crt_t *crt_list;
+ unsigned int max = 512;
+ unsigned int flags = 0;
+ gnutls_datum_t tmp;
struct stat s;
int r;
+
+ *cert_list = NULL;
+ *num_certs = 0;
+
+ if (fp == NULL)
+ return -ENOENT;
+
if (fstat(fileno(fp), &s) < 0) {
perror("fstat");
- return NULL;
+ return -errno;
}
+
+ crt_list=(gnutls_x509_crt_t*)malloc(max*sizeof(gnutls_x509_crt_t));
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");
free(tmp.data);
- return NULL;
+ free(crt_list);
+ return -EIO;
}
- gnutls_x509_crt_init(&cert);
- if ((r = gnutls_x509_crt_import(cert, &tmp, (format == 0)?GNUTLS_X509_FMT_DER:GNUTLS_X509_FMT_PEM)) < 0) {
+ if ((r = gnutls_x509_crt_list_import(crt_list, &max,
+ &tmp, format, flags)) < 0) {
debug_print("cert import failed: %s\n", gnutls_strerror(r));
- gnutls_x509_crt_deinit(cert);
- cert = NULL;
+ free(tmp.data);
+ free(crt_list);
+ return r;
}
free(tmp.data);
- debug_print("got cert! %p\n", cert);
+ debug_print("got %d certs in crt_list! %p\n", max, &crt_list);
+
+ *cert_list = crt_list;
+ *num_certs = max;
+
+ return r;
+}
+
+/* return one certificate, read from file */
+static gnutls_x509_crt_t gnutls_import_X509_fp(FILE *fp, gnutls_x509_crt_fmt_t format)
+{
+ gnutls_x509_crt_t *certs = NULL;
+ gnutls_x509_crt_t cert = NULL;
+ int i, ncerts, r;
+
+ if ((r = gnutls_import_X509_list_fp(fp, format, &certs, &ncerts)) < 0) {
+ return NULL;
+ }
+
+ if (ncerts == 0)
+ return NULL;
+
+ for (i = 1; i < ncerts; i++)
+ gnutls_x509_crt_deinit(certs[i]);
+
+ cert = certs[0];
+ free(certs);
+
return cert;
}
-static gnutls_x509_privkey gnutls_d2i_key_fp(FILE *fp, int format)
+static gnutls_x509_privkey_t gnutls_import_key_fp(FILE *fp, gnutls_x509_crt_fmt_t format)
{
- gnutls_x509_privkey key = NULL;
- gnutls_datum tmp;
+ gnutls_x509_privkey_t key = NULL;
+ gnutls_datum_t tmp;
struct stat s;
int r;
if (fstat(fileno(fp), &s) < 0) {
}
gnutls_x509_privkey_init(&key);
- if ((r = gnutls_x509_privkey_import(key, &tmp, (format == 0)?GNUTLS_X509_FMT_DER:GNUTLS_X509_FMT_PEM)) < 0) {
+ if ((r = gnutls_x509_privkey_import(key, &tmp, format)) < 0) {
debug_print("key import failed: %s\n", gnutls_strerror(r));
gnutls_x509_privkey_deinit(key);
key = NULL;
return key;
}
-static gnutls_pkcs12_t gnutls_d2i_PKCS12_fp(FILE *fp, int format)
+static gnutls_pkcs12_t gnutls_import_PKCS12_fp(FILE *fp, gnutls_x509_crt_fmt_t format)
{
gnutls_pkcs12_t p12 = NULL;
- gnutls_datum tmp;
+ gnutls_datum_t tmp;
struct stat s;
int r;
if (fstat(fileno(fp), &s) < 0) {
- perror("fstat");
+ log_error(LOG_PROTOCOL, _("Cannot stat P12 certificate file (%s)\n"),
+ strerror(errno));
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");
+ log_error(LOG_PROTOCOL, _("Cannot read P12 certificate file (%s)\n"),
+ strerror(errno));
free(tmp.data);
return NULL;
}
gnutls_pkcs12_init(&p12);
- if ((r = gnutls_pkcs12_import(p12, &tmp, (format == 0)?GNUTLS_X509_FMT_DER:GNUTLS_X509_FMT_PEM,0)) < 0) {
- g_warning("p12 import failed: %s\n", gnutls_strerror(r));
+ if ((r = gnutls_pkcs12_import(p12, &tmp, format, 0)) < 0) {
+ log_error(LOG_PROTOCOL, _("Cannot import P12 certificate file (%s)\n"),
+ gnutls_strerror(r));
gnutls_pkcs12_deinit(p12);
p12 = NULL;
}
return p12;
}
-#endif
-
static void ssl_certificate_save (SSLCertificate *cert)
{
gchar *file, *port;
debug_print("Can't save certificate !\n");
return;
}
-#ifdef USE_GNUTLS
- gnutls_i2d_X509_fp(fp, cert->x509_cert);
-#else
- i2d_X509_fp(fp, cert->x509_cert);
-#endif
+
+ gnutls_export_X509_fp(fp, cert->x509_cert, GNUTLS_X509_FMT_DER);
+
g_free(file);
fclose(fp);
file = get_certificate_path(cert->host, buf, cert->fingerprint);
claws_unlink (file);
g_free(file);
+ file = get_certificate_chain_path(cert->host, buf, cert->fingerprint);
+ claws_unlink (file);
+ g_free(file);
g_free(buf);
}
gchar *file = NULL;
gchar *buf;
SSLCertificate *cert = NULL;
- gnutls_x509_crt tmp_x509;
+ gnutls_x509_crt_t tmp_x509;
FILE *fp = NULL;
gboolean must_rename = FALSE;
return NULL;
}
- if ((tmp_x509 = gnutls_d2i_X509_fp(fp, 0)) != NULL) {
+ if ((tmp_x509 = gnutls_import_X509_fp(fp, GNUTLS_X509_FMT_DER)) != NULL) {
cert = ssl_certificate_new(tmp_x509, host, port);
debug_print("got cert %p\n", cert);
gnutls_x509_crt_deinit(tmp_x509);
}
+
fclose(fp);
g_free(file);
return TRUE;
}
-static guint check_cert(gnutls_x509_crt cert)
+static guint check_cert(SSLCertificate *cert)
{
- gnutls_x509_crt *ca_list;
- unsigned int max = 512;
+ gnutls_x509_crt_t *ca_list = NULL;
+ gnutls_x509_crt_t *chain = NULL;
+ unsigned int max_ca = 512, max_certs;
unsigned int flags = 0;
- gnutls_datum tmp;
- struct stat s;
int r, i;
unsigned int status;
+ gchar *chain_file = NULL, *buf = NULL;
FILE *fp;
if (claws_ssl_get_cert_file())
else
return (guint)-1;
- if (fstat(fileno(fp), &s) < 0) {
- perror("fstat");
+ if ((r = gnutls_import_X509_list_fp(fp, GNUTLS_X509_FMT_PEM, &ca_list, &max_ca)) < 0) {
+ debug_print("CA import failed: %s\n", gnutls_strerror(r));
fclose(fp);
return (guint)-1;
}
-
- ca_list=(gnutls_x509_crt_t*)malloc(max*sizeof(gnutls_x509_crt_t));
- 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");
- free(tmp.data);
- free(ca_list);
+ fclose(fp);
+ fp = NULL;
+
+ buf = g_strdup_printf("%d", cert->port);
+ chain_file = get_certificate_chain_path(cert->host, buf, cert->fingerprint);
+ g_free(buf);
+ if (is_file_exist(chain_file)) {
+ unsigned char md[128];
+ size_t n;
+ char *fingerprint;
+
+ fp = g_fopen(chain_file, "r");
+ if ((r = gnutls_import_X509_list_fp(fp, GNUTLS_X509_FMT_PEM, &chain, &max_certs)) < 0) {
+ debug_print("chain import failed: %s\n", gnutls_strerror(r));
+ fclose(fp);
+ g_free(chain_file);
+ return (guint)-1;
+ }
+ g_free(chain_file);
fclose(fp);
- return (guint)-1;
- }
+ fp = NULL;
+
+ gnutls_x509_crt_get_fingerprint(chain[0], GNUTLS_DIG_MD5, md, &n);
+ fingerprint = readable_fingerprint(md, n);
+ if (!fingerprint || strcmp(fingerprint, cert->fingerprint)) {
+ debug_print("Saved chain fingerprint does not match current : %s / %s",
+ cert->fingerprint, fingerprint);
+
+ return (guint)-1;
+ }
+ g_free(fingerprint);
- if ((r = gnutls_x509_crt_list_import(ca_list, &max,
- &tmp, GNUTLS_X509_FMT_PEM, flags)) < 0) {
- debug_print("cert import failed: %s\n", gnutls_strerror(r));
- free(tmp.data);
- free(ca_list);
- fclose(fp);
- return (guint)-1;
+ r = gnutls_x509_crt_list_verify (chain,
+ max_certs,
+ ca_list, max_ca,
+ NULL, 0,
+ GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT,
+ &status);
+ if (r < 0)
+ debug_print("chain check failed: %s\n", gnutls_strerror(r));
+
+ for (i = 0; i < max_certs; i++)
+ gnutls_x509_crt_deinit(chain[i]);
+ free(chain);
+
+ } else {
+ r = gnutls_x509_crt_verify(cert->x509_cert, ca_list, max_ca, flags, &status);
+ if (r < 0)
+ debug_print("cert check failed: %s\n", gnutls_strerror(r));
}
- free(tmp.data);
- debug_print("got %d certs in ca_list! %p\n", max, &ca_list);
- r = gnutls_x509_crt_verify(cert, ca_list, max, flags, &status);
- fclose(fp);
- for (i = 0; i < max; i++)
+ for (i = 0; i < max_ca; i++)
gnutls_x509_crt_deinit(ca_list[i]);
free(ca_list);
}
-char *ssl_certificate_check_signer (gnutls_x509_crt cert, guint status)
+char *ssl_certificate_check_signer (SSLCertificate *cert, guint status)
{
+ gnutls_x509_crt_t x509_cert = cert ? cert->x509_cert : NULL;
+
+ if (!cert)
+ return g_strdup(_("Internal error"));
+
if (status == (guint)-1) {
status = check_cert(cert);
if (status == -1)
return g_strdup(_("Uncheckable"));
}
if (status & GNUTLS_CERT_INVALID) {
- if (gnutls_x509_crt_check_issuer(cert, cert))
+ if (gnutls_x509_crt_check_issuer(x509_cert, x509_cert))
return g_strdup(_("Self-signed certificate"));
}
if (status & GNUTLS_CERT_REVOKED)
return NULL;
}
-gboolean ssl_certificate_check (gnutls_x509_crt x509_cert, guint status, const gchar *host, gushort port)
+static void ssl_certificate_save_chain(gnutls_x509_crt_t *certs, gint len, const gchar *host, gushort port)
+{
+ gint i;
+ gchar *file = NULL;
+ FILE *fp = NULL;
+
+ for (i = 0; i < len; i++) {
+ size_t n;
+ unsigned char md[128];
+ gnutls_x509_crt_t cert = certs[i];
+ gchar *fingerprint;
+
+ if (i == 0) {
+ gnutls_x509_crt_get_fingerprint(cert, GNUTLS_DIG_MD5, md, &n);
+ fingerprint = readable_fingerprint(md, n);
+ gchar *buf = g_strdup_printf("%d", port);
+
+ file = get_certificate_chain_path(host, buf, fingerprint);
+
+ g_free(buf);
+
+ fp = g_fopen(file, "wb");
+ if (fp == NULL) {
+ g_free(file);
+ debug_print("Can't save certificate !\n");
+ return;
+ }
+ g_free(file);
+ }
+
+ gnutls_export_X509_fp(fp, cert, GNUTLS_X509_FMT_PEM);
+
+ }
+ if (fp)
+ fclose(fp);
+}
+
+gboolean ssl_certificate_check (gnutls_x509_crt_t x509_cert, guint status, const gchar *host, gushort port)
{
SSLCertificate *current_cert = NULL;
SSLCertificate *known_cert;
return TRUE;
}
-gnutls_x509_crt ssl_certificate_get_x509_from_pem_file(const gchar *file)
+gboolean ssl_certificate_check_chain(gnutls_x509_crt_t *certs, gint chain_len, const gchar *host, gushort port)
+{
+ int ncas = 0;
+ gnutls_x509_crt_t *cas = NULL;
+ gboolean result = FALSE;
+ int i;
+ gint status;
+
+ if (claws_ssl_get_cert_file()) {
+ FILE *fp = g_fopen(claws_ssl_get_cert_file(), "rb");
+ int r = -errno;
+
+ if (fp) {
+ r = gnutls_import_X509_list_fp(fp, GNUTLS_X509_FMT_PEM, &cas, &ncas);
+ fclose(fp);
+ }
+
+ if (r < 0)
+ g_warning("Can't read SSL_CERT_FILE %s: %s\n",
+ claws_ssl_get_cert_file(),
+ gnutls_strerror(r));
+ } else {
+ debug_print("Can't find SSL ca-certificates file\n");
+ }
+
+
+ gnutls_x509_crt_list_verify (certs,
+ chain_len,
+ cas, ncas,
+ NULL, 0,
+ GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT,
+ &status);
+
+ result = ssl_certificate_check(certs[0], status, host, port);
+
+ if (result == TRUE) {
+ ssl_certificate_save_chain(certs, chain_len, host, port);
+ }
+
+ for (i = 0; i < ncas; i++)
+ gnutls_x509_crt_deinit(cas[i]);
+ free(cas);
+
+ return result;
+}
+
+gnutls_x509_crt_t ssl_certificate_get_x509_from_pem_file(const gchar *file)
{
- gnutls_x509_crt x509 = NULL;
+ gnutls_x509_crt_t x509 = NULL;
if (!file)
return NULL;
if (is_file_exist(file)) {
FILE *fp = g_fopen(file, "r");
if (fp) {
- x509 = gnutls_d2i_X509_fp(fp, 1);
+ x509 = gnutls_import_X509_fp(fp, GNUTLS_X509_FMT_PEM);
fclose(fp);
return x509;
+ } else {
+ log_error(LOG_PROTOCOL, _("Cannot open certificate file %s: %s\n"),
+ file, strerror(errno));
}
} else {
- log_error(LOG_PROTOCOL, _("Cannot open certificate file %s\n"), file);
+ log_error(LOG_PROTOCOL, _("Certificate file %s missing (%s)\n"),
+ file, strerror(errno));
}
return NULL;
}
-gnutls_x509_privkey ssl_certificate_get_pkey_from_pem_file(const gchar *file)
+gnutls_x509_privkey_t ssl_certificate_get_pkey_from_pem_file(const gchar *file)
{
- gnutls_x509_privkey key = NULL;
+ gnutls_x509_privkey_t key = NULL;
if (!file)
return NULL;
if (is_file_exist(file)) {
FILE *fp = g_fopen(file, "r");
if (fp) {
- key = gnutls_d2i_key_fp(fp, 1);
+ key = gnutls_import_key_fp(fp, GNUTLS_X509_FMT_PEM);
fclose(fp);
return key;
+ } else {
+ log_error(LOG_PROTOCOL, _("Cannot open key file %s (%s)\n"),
+ file, strerror(errno));
}
} else {
- log_error(LOG_PROTOCOL, _("Cannot open key file %s\n"), file);
+ log_error(LOG_PROTOCOL, _("Key file %s missing (%s)\n"), file,
+ strerror(errno));
}
return NULL;
}
static int
parse_pkcs12 (gnutls_pkcs12_t p12,
const char *password,
- gnutls_x509_privkey * key,
+ gnutls_x509_privkey_t * key,
gnutls_x509_crt_t * cert)
{
gnutls_pkcs12_bag_t bag = NULL;
for (i = 0; i < elements_in_bag; i++)
{
int type;
- gnutls_datum data;
+ gnutls_datum_t data;
type = gnutls_pkcs12_bag_get_type (bag, i);
if (type < 0)
return ret;
}
void ssl_certificate_get_x509_and_pkey_from_p12_file(const gchar *file, const gchar *password,
- gnutls_x509_crt *x509, gnutls_x509_privkey *pkey)
+ gnutls_x509_crt_t *x509, gnutls_x509_privkey_t *pkey)
{
gnutls_pkcs12_t p12 = NULL;
if (is_file_exist(file)) {
FILE *fp = g_fopen(file, "r");
if (fp) {
- p12 = gnutls_d2i_PKCS12_fp(fp, 0);
+ p12 = gnutls_import_PKCS12_fp(fp, GNUTLS_X509_FMT_DER);
fclose(fp);
+ if (!p12) {
+ log_error(LOG_PROTOCOL, _("Failed to read P12 certificate file %s\n"), file);
+ }
+ } else {
+ log_error(LOG_PROTOCOL, _("Cannot open P12 certificate file %s (%s)\n"),
+ file, strerror(errno));
}
} else {
- log_error(LOG_PROTOCOL, _("Cannot open certificate file %s\n"), file);
+ log_error(LOG_PROTOCOL, _("P12 Certificate file %s missing (%s)\n"), file,
+ strerror(errno));
}
if (p12 != NULL) {
if ((r = parse_pkcs12(p12, password, pkey, x509)) == 0) {
gnutls_pkcs12_deinit(p12);
}
}
+
+gboolean ssl_certificate_check_subject_cn(SSLCertificate *cert)
+{
+ return gnutls_x509_crt_check_hostname(cert->x509_cert, cert->host) != 0;
+}
+
+gchar *ssl_certificate_get_subject_cn(SSLCertificate *cert)
+{
+ gchar subject_cn[BUFFSIZE];
+ size_t n = BUFFSIZE;
+
+ if(gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
+ GNUTLS_OID_X520_COMMON_NAME, 0, 0, subject_cn, &n))
+ strncpy(subject_cn, _("<not in certificate>"), BUFFSIZE);
+
+ return g_strdup(subject_cn);
+}
+
#endif /* USE_GNUTLS */
projects / claws.git / blobdiff