/*
* Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2007 Colin Leroy <colin@colino.net>
+ * Copyright (C) 1999-2012 Colin Leroy <colin@colino.net>
* and the Claws Mail team
*
* This program is free software; you can redistribute it and/or modify
#ifdef HAVE_CONFIG_H
# include "config.h"
+#include "claws-features.h"
#endif
-#if (defined(USE_OPENSSL) || defined (USE_GNUTLS))
-#if USE_OPENSSL
-#include <openssl/ssl.h>
-#else
+#ifdef USE_GNUTLS
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
+#include <gnutls/pkcs12.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>
-
+#include <errno.h>
#ifdef G_OS_WIN32
-#include "winsock2.h"
-#endif
+# include <winsock2.h>
+#else
+# include <sys/socket.h>
+# include <netinet/in.h>
+# include <netdb.h>
+#endif /* G_OS_WIN32 */
#include "ssl_certificate.h"
#include "utils.h"
#include "log.h"
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)
+static gchar *get_certificate_chain_path(const gchar *host, const gchar *port, const gchar *fp)
{
- struct tm tm;
- int offset;
-
- if (asn1Time == NULL || asn1Time->length < 13)
- return 0;
+ gchar *tmp = get_certificate_path(host, port, fp);
+ gchar *result = g_strconcat(tmp, ".chain", NULL);
- memset(&tm, 0, sizeof(tm));
+ g_free(tmp);
-#define N2(n) ((asn1Time->data[n]-'0')*10 + asn1Time->data[(n)+1]-'0')
-
-#define CPY(f,n) (tm.f=N2(n))
-
- CPY(tm_year,0);
-
- if(tm.tm_year < 50)
- tm.tm_year += 100; /* Sux */
-
- CPY(tm_mon, 2);
- --tm.tm_mon;
- CPY(tm_mday, 4);
- CPY(tm_hour, 6);
- CPY(tm_min, 8);
- CPY(tm_sec, 10);
-
- offset=0;
-
- if (asn1Time->data[12] != 'Z')
- {
- if (asn1Time->length < 17)
- return 0;
-
- offset=N2(13)*3600+N2(15)*60;
-
- if (asn1Time->data[12] == '-')
- offset= -offset;
- }
-
-#undef N2
-#undef CPY
-
- 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
+ return result;
}
char * readable_fingerprint(unsigned char *src, int len)
}
#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
-#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
+static SSLCertificate *ssl_certificate_new(gnutls_x509_crt_t x509_cert, const gchar *host, gushort port)
{
SSLCertificate *cert = g_new0(SSLCertificate, 1);
- unsigned int n;
+ size_t n;
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->host = g_strdup(host);
+ cert->host = g_strdup(host);
cert->port = port;
/* fingerprint */
-#if USE_OPENSSL
- X509_digest(cert->x509_cert, EVP_md5(), md, &n);
- cert->fingerprint = readable_fingerprint(md, (int)n);
-#else
+ n = sizeof(md);
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)
+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) {
- g_warning("couldn't export cert %s (%d)\n", gnutls_strerror(r), cert_size);
+ 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_t x509_cert, unsigned char **output)
+{
+ size_t cert_size = 10*1024;
+ int r;
+
+ if (output == NULL)
+ return 0;
+
+ *output = malloc(cert_size);
+
+ if ((r = gnutls_x509_crt_export(x509_cert, GNUTLS_X509_FMT_DER, *output, &cert_size)) < 0) {
+ g_warning("couldn't export cert %s (%zd)\n", gnutls_strerror(r), cert_size);
+ free(*output);
+ *output = NULL;
+ return 0;
}
+ return cert_size;
}
-static gnutls_x509_crt d2i_X509_fp(FILE *fp, int unused)
+
+size_t gnutls_i2d_PrivateKey(gnutls_x509_privkey_t pkey, unsigned char **output)
{
- gnutls_x509_crt cert = NULL;
- gnutls_datum tmp;
+ size_t key_size = 10*1024;
+ int r;
+
+ if (output == NULL)
+ return 0;
+
+ *output = malloc(key_size);
+
+ if ((r = gnutls_x509_privkey_export(pkey, GNUTLS_X509_FMT_DER, *output, &key_size)) < 0) {
+ g_warning("couldn't export key %s (%zd)\n", gnutls_strerror(r), key_size);
+ free(*output);
+ *output = NULL;
+ return 0;
+ }
+ return key_size;
+}
+
+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_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 -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);
+ free(crt_list);
+ return -EIO;
+ }
+
+ if ((r = gnutls_x509_crt_list_import(crt_list, &max,
+ &tmp, format, flags)) < 0) {
+ debug_print("cert import failed: %s\n", gnutls_strerror(r));
+ free(tmp.data);
+ free(crt_list);
+ return r;
+ }
+ free(tmp.data);
+ 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_t gnutls_import_key_fp(FILE *fp, gnutls_x509_crt_fmt_t format)
+{
+ gnutls_x509_privkey_t key = NULL;
+ gnutls_datum_t tmp;
struct stat s;
int r;
if (fstat(fileno(fp), &s) < 0) {
tmp.size = s.st_size;
if (fread (tmp.data, 1, s.st_size, fp) < s.st_size) {
perror("fread");
+ free(tmp.data);
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;
+ gnutls_x509_privkey_init(&key);
+ 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;
}
- debug_print("got cert! %p\n", cert);
- return cert;
+ free(tmp.data);
+ debug_print("got key! %p\n", key);
+ return key;
+}
+
+static gnutls_pkcs12_t gnutls_import_PKCS12_fp(FILE *fp, gnutls_x509_crt_fmt_t format)
+{
+ gnutls_pkcs12_t p12 = NULL;
+ gnutls_datum_t tmp;
+ struct stat s;
+ int r;
+ if (fstat(fileno(fp), &s) < 0) {
+ 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) {
+ 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)) < 0) {
+ log_error(LOG_PROTOCOL, _("Cannot import P12 certificate file (%s)\n"),
+ gnutls_strerror(r));
+ gnutls_pkcs12_deinit(p12);
+ p12 = NULL;
+ }
+ free(tmp.data);
+ debug_print("got p12! %p\n", p12);
+ return p12;
}
-#endif
static void ssl_certificate_save (SSLCertificate *cert)
{
debug_print("Can't save certificate !\n");
return;
}
- i2d_X509_fp(fp, cert->x509_cert);
+
+ gnutls_export_X509_fp(fp, cert->x509_cert, GNUTLS_X509_FMT_DER);
+
g_free(file);
fclose(fp);
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 *file;
buf = g_strdup_printf("%d", cert->port);
file = get_certificate_path(cert->host, buf, cert->fingerprint);
- g_unlink (file);
+ 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);
}
-SSLCertificate *ssl_certificate_find (gchar *host, gushort port, const gchar *fingerprint)
-{
- return ssl_certificate_find_lookup (host, port, fingerprint, TRUE);
-}
-
-SSLCertificate *ssl_certificate_find_lookup (gchar *host, gushort port, const gchar *fingerprint, gboolean lookup)
+SSLCertificate *ssl_certificate_find (const gchar *host, gushort port, const gchar *fingerprint)
{
gchar *file = NULL;
gchar *buf;
- gchar *fqdn_host;
SSLCertificate *cert = NULL;
-#if USE_OPENSSL
- X509 *tmp_x509;
-#else
- gnutls_x509_crt tmp_x509;
-#endif
+ gnutls_x509_crt_t tmp_x509;
FILE *fp = NULL;
gboolean must_rename = FALSE;
- if (lookup)
- fqdn_host = get_fqdn(host);
- else
- fqdn_host = g_strdup(host);
-
buf = g_strdup_printf("%d", port);
if (fingerprint != NULL) {
- file = get_certificate_path(fqdn_host, buf, fingerprint);
+ file = get_certificate_path(host, buf, fingerprint);
fp = g_fopen(file, "rb");
}
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);
+ file = get_certificate_path(host, buf, NULL);
fp = g_fopen(file, "rb");
if (fp) {
}
if (fp == NULL) {
g_free(file);
- g_free(fqdn_host);
g_free(buf);
return NULL;
}
- if ((tmp_x509 = d2i_X509_fp(fp, 0)) != NULL) {
- cert = ssl_certificate_new_lookup(tmp_x509, fqdn_host, port, lookup);
+ 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);
-#if USE_OPENSSL
- X509_free(tmp_x509);
-#else
gnutls_x509_crt_deinit(tmp_x509);
-#endif
}
+
fclose(fp);
g_free(file);
if (must_rename) {
- gchar *old = get_certificate_path(fqdn_host, buf, NULL);
- gchar *new = get_certificate_path(fqdn_host, buf, fingerprint);
+ gchar *old = get_certificate_path(host, buf, NULL);
+ gchar *new = get_certificate_path(host, buf, fingerprint);
if (strcmp(old, new))
move_file(old, new, TRUE);
g_free(old);
g_free(new);
}
g_free(buf);
- g_free(fqdn_host);
return cert;
}
static gboolean ssl_certificate_compare (SSLCertificate *cert_a, SSLCertificate *cert_b)
{
-#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;
return FALSE;
}
- output_a = malloc(cert_size_a);
- output_b = malloc(cert_size_b);
+ output_a = g_malloc(cert_size_a);
+ output_b = g_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));
+ g_free(output_a);
+ g_free(output_b);
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));
+ g_free(output_a);
+ g_free(output_b);
return FALSE;
}
if (cert_size_a != cert_size_b) {
- g_warning("size differ %d %d\n", cert_size_a, cert_size_b);
+ g_warning("size differ %zd %zd\n", cert_size_a, cert_size_b);
+ g_free(output_a);
+ g_free(output_b);
return FALSE;
}
if (memcmp(output_a, output_b, cert_size_a)) {
g_warning("contents differ\n");
+ g_free(output_a);
+ g_free(output_b);
return FALSE;
}
+ g_free(output_a);
+ g_free(output_b);
return TRUE;
-#endif
}
-#if USE_OPENSSL
-char *ssl_certificate_check_signer (X509 *cert)
+static guint check_cert(SSLCertificate *cert)
{
- X509_STORE_CTX store_ctx;
- X509_STORE *store;
- char *err_msg = NULL;
+ gnutls_x509_crt_t *ca_list = NULL;
+ gnutls_x509_crt_t *chain = NULL;
+ unsigned int max_ca = 512, max_certs;
+ unsigned int flags = 0;
+ int r, i;
+ unsigned int status;
+ gchar *chain_file = NULL, *buf = NULL;
+ FILE *fp;
- store = X509_STORE_new();
- if (store == NULL) {
- g_print("Can't create X509_STORE\n");
- return NULL;
- }
- if (!X509_STORE_set_default_paths(store)) {
- X509_STORE_free (store);
- return g_strdup(_("Couldn't load X509 default paths"));
+ if (claws_ssl_get_cert_file())
+ fp = g_fopen(claws_ssl_get_cert_file(), "r");
+ else
+ return (guint)-1;
+
+ 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;
}
+ fclose(fp);
+ fp = NULL;
- X509_STORE_CTX_init (&store_ctx, store, cert, NULL);
-
- if(!X509_verify_cert (&store_ctx)) {
- err_msg = g_strdup(X509_verify_cert_error_string(
- X509_STORE_CTX_get_error(&store_ctx)));
- debug_print("Can't check signer: %s\n", err_msg);
- X509_STORE_CTX_cleanup (&store_ctx);
- X509_STORE_free (store);
- return err_msg;
-
- }
- X509_STORE_CTX_cleanup (&store_ctx);
- X509_STORE_free (store);
- return 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);
+ 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);
+
+ 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));
+ }
+
+ for (i = 0; i < max_ca; i++)
+ gnutls_x509_crt_deinit(ca_list[i]);
+ free(ca_list);
+
+ if (r < 0)
+ return (guint)-1;
+ else
+ return status;
+
}
-#else
-char *ssl_certificate_check_signer (gnutls_x509_crt cert, guint status)
+
+static gboolean ssl_certificate_is_valid(SSLCertificate *cert, guint status)
+{
+ gchar *str_status = ssl_certificate_check_signer(cert, status);
+
+ if (str_status != NULL) {
+ g_free(str_status);
+ return FALSE;
+ }
+ return ssl_certificate_check_subject_cn(cert);
+}
+
+char *ssl_certificate_check_signer (SSLCertificate *cert, guint status)
{
- if (status == (guint)-1)
- return g_strdup(_("Uncheckable"));
+ 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;
}
-#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
+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) {
+ n = sizeof(md);
+ 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,
+ gboolean accept_if_valid)
{
SSLCertificate *current_cert = NULL;
SSLCertificate *known_cert;
SSLCertHookData cert_hook_data;
- gchar *fqdn_host = NULL;
gchar *fingerprint;
- unsigned int n;
- unsigned char md[128];
+ size_t n;
+ unsigned char md[128];
+ gboolean valid = FALSE;
+
+ current_cert = ssl_certificate_new(x509_cert, host, port);
- if (fqdn)
- fqdn_host = g_strdup(fqdn);
- else if (host)
- fqdn_host = get_fqdn(host);
- else {
- g_warning("no host!\n");
- return FALSE;
- }
-
- current_cert = ssl_certificate_new_lookup(x509_cert, fqdn_host, port, FALSE);
-
if (current_cert == NULL) {
debug_print("Buggy certificate !\n");
- g_free(fqdn_host);
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;
+ n = sizeof(md);
gnutls_x509_crt_get_fingerprint(x509_cert, GNUTLS_DIG_MD5, md, &n);
- fingerprint = readable_fingerprint(md, (int)n);
-#endif
+ fingerprint = readable_fingerprint(md, n);
- known_cert = ssl_certificate_find_lookup (fqdn_host, port, fingerprint, FALSE);
+ known_cert = ssl_certificate_find(host, port, fingerprint);
g_free(fingerprint);
- g_free(fqdn_host);
+
+ if (accept_if_valid)
+ valid = ssl_certificate_is_valid(current_cert, status);
+ else
+ valid = FALSE; /* Force check */
if (known_cert == NULL) {
+ if (valid) {
+ ssl_certificate_save(current_cert);
+ ssl_certificate_destroy(current_cert);
+ return TRUE;
+ }
+
cert_hook_data.cert = current_cert;
cert_hook_data.old_cert = NULL;
cert_hook_data.expired = FALSE;
cert_hook_data.accept = FALSE;
-
+
hooks_invoke(SSLCERT_ASK_HOOKLIST, &cert_hook_data);
-
+
if (!cert_hook_data.accept) {
ssl_certificate_destroy(current_cert);
return FALSE;
return TRUE;
}
} else if (!ssl_certificate_compare (current_cert, known_cert)) {
+ if (valid) {
+ ssl_certificate_save(current_cert);
+ ssl_certificate_destroy(current_cert);
+ ssl_certificate_destroy(known_cert);
+ return TRUE;
+ }
+
cert_hook_data.cert = current_cert;
cert_hook_data.old_cert = known_cert;
cert_hook_data.expired = FALSE;
cert_hook_data.accept = FALSE;
-
+
hooks_invoke(SSLCERT_ASK_HOOKLIST, &cert_hook_data);
if (!cert_hook_data.accept) {
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)
warned_expired = g_hash_table_new(g_str_hash, g_str_equal);
-
+
if (g_hash_table_lookup(warned_expired, tmp)) {
g_free(tmp);
ssl_certificate_destroy(current_cert);
ssl_certificate_destroy(known_cert);
return TRUE;
}
-
+
cert_hook_data.cert = current_cert;
cert_hook_data.old_cert = NULL;
cert_hook_data.expired = TRUE;
cert_hook_data.accept = FALSE;
-
+
hooks_invoke(SSLCERT_ASK_HOOKLIST, &cert_hook_data);
if (!cert_hook_data.accept) {
return TRUE;
}
-#endif /* USE_OPENSSL */
+gboolean ssl_certificate_check_chain(gnutls_x509_crt_t *certs, gint chain_len,
+ const gchar *host, gushort port,
+ gboolean accept_if_valid)
+{
+ 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,
+ accept_if_valid);
+
+ 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_t x509 = NULL;
+ if (!file)
+ return NULL;
+
+ if (is_file_exist(file)) {
+ FILE *fp = g_fopen(file, "r");
+ if (fp) {
+ 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, _("Certificate file %s missing (%s)\n"),
+ file, strerror(errno));
+ }
+ return NULL;
+}
+
+gnutls_x509_privkey_t ssl_certificate_get_pkey_from_pem_file(const gchar *file)
+{
+ 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_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, _("Key file %s missing (%s)\n"), file,
+ strerror(errno));
+ }
+ return NULL;
+}
+
+/* From GnuTLS lib/gnutls_x509.c */
+static int
+parse_pkcs12 (gnutls_pkcs12_t p12,
+ const char *password,
+ gnutls_x509_privkey_t * key,
+ gnutls_x509_crt_t * cert)
+{
+ gnutls_pkcs12_bag_t bag = NULL;
+ int index = 0;
+ int ret;
+
+ for (;;)
+ {
+ int elements_in_bag;
+ int i;
+
+ ret = gnutls_pkcs12_bag_init (&bag);
+ if (ret < 0)
+ {
+ bag = NULL;
+ goto done;
+ }
+
+ ret = gnutls_pkcs12_get_bag (p12, index, bag);
+ if (ret == GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE)
+ break;
+ if (ret < 0)
+ {
+ goto done;
+ }
+
+ ret = gnutls_pkcs12_bag_get_type (bag, 0);
+ if (ret < 0)
+ {
+ goto done;
+ }
+
+ if (ret == GNUTLS_BAG_ENCRYPTED)
+ {
+ ret = gnutls_pkcs12_bag_decrypt (bag, password);
+ if (ret < 0)
+ {
+ goto done;
+ }
+ }
+
+ elements_in_bag = gnutls_pkcs12_bag_get_count (bag);
+ if (elements_in_bag < 0)
+ {
+ goto done;
+ }
+
+ for (i = 0; i < elements_in_bag; i++)
+ {
+ int type;
+ gnutls_datum_t data;
+
+ type = gnutls_pkcs12_bag_get_type (bag, i);
+ if (type < 0)
+ {
+ goto done;
+ }
+
+ ret = gnutls_pkcs12_bag_get_data (bag, i, &data);
+ if (ret < 0)
+ {
+ goto done;
+ }
+
+ switch (type)
+ {
+ case GNUTLS_BAG_PKCS8_ENCRYPTED_KEY:
+ case GNUTLS_BAG_PKCS8_KEY:
+ ret = gnutls_x509_privkey_init (key);
+ if (ret < 0)
+ {
+ goto done;
+ }
+
+ ret = gnutls_x509_privkey_import_pkcs8
+ (*key, &data, GNUTLS_X509_FMT_DER, password,
+ type == GNUTLS_BAG_PKCS8_KEY ? GNUTLS_PKCS_PLAIN : 0);
+ if (ret < 0)
+ {
+ goto done;
+ }
+ break;
+
+ case GNUTLS_BAG_CERTIFICATE:
+ ret = gnutls_x509_crt_init (cert);
+ if (ret < 0)
+ {
+ goto done;
+ }
+
+ ret =
+ gnutls_x509_crt_import (*cert, &data, GNUTLS_X509_FMT_DER);
+ if (ret < 0)
+ {
+ goto done;
+ }
+ break;
+
+ case GNUTLS_BAG_ENCRYPTED:
+ /* XXX Bother to recurse one level down? Unlikely to
+ use the same password anyway. */
+ case GNUTLS_BAG_EMPTY:
+ default:
+ break;
+ }
+ }
+
+ index++;
+ gnutls_pkcs12_bag_deinit (bag);
+ }
+
+ ret = 0;
+
+done:
+ if (bag)
+ gnutls_pkcs12_bag_deinit (bag);
+
+ return ret;
+}
+void ssl_certificate_get_x509_and_pkey_from_p12_file(const gchar *file, const gchar *password,
+ gnutls_x509_crt_t *x509, gnutls_x509_privkey_t *pkey)
+{
+ gnutls_pkcs12_t p12 = NULL;
+
+ int r;
+
+ *x509 = NULL;
+ *pkey = NULL;
+ if (!file)
+ return;
+
+ if (is_file_exist(file)) {
+ FILE *fp = g_fopen(file, "r");
+ if (fp) {
+ 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, _("P12 Certificate file %s missing (%s)\n"), file,
+ strerror(errno));
+ }
+ if (p12 != NULL) {
+ if ((r = parse_pkcs12(p12, password, pkey, x509)) == 0) {
+ debug_print("got p12\n");
+ } else {
+ log_error(LOG_PROTOCOL, "%s\n", gnutls_strerror(r));
+ }
+ 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