2009-06-18 [colin] 3.7.1cvs76
[claws.git] / src / plugins / pgpcore / sgpgme.c
index e9f5a208ad84f09de04a8096e3dc52c891cf288e..8410ab0e0a29c2fbc6ca8b11bebfcb8b0001eca0 100644 (file)
@@ -1,10 +1,10 @@
 /*
- * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2003 Hiroyuki Yamamoto & the Sylpheed-Claws team
+ * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
+ * Copyright (C) 1999-2009 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,
@@ -13,8 +13,8 @@
  * 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 <glib.h>
 #include <glib/gi18n.h>
 #include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
 #include <errno.h>
+#include <sys/types.h>
+#ifndef G_OS_WIN32
+#  include <sys/wait.h>
+#endif
+#if (defined(__DragonFly__) || defined(SOLARIS) || defined (__NetBSD__) || defined (__FreeBSD__) || defined (__OpenBSD__))
+#  include <sys/signal.h>
+#endif
+#ifndef G_OS_WIN32
+#include <sys/mman.h>
+#endif
+#if HAVE_LOCALE_H
+#  include <locale.h>
+#endif
 
 #include "sgpgme.h"
 #include "privacy.h"
@@ -38,6 +53,7 @@
 #include "alertpanel.h"
 #include "passphrase.h"
 #include "prefs_gpg.h"
+#include "account.h"
 #include "select-keys.h"
 
 static void sgpgme_disable_all(void)
@@ -54,11 +70,15 @@ gpgme_verify_result_t sgpgme_verify_signature(gpgme_ctx_t ctx, gpgme_data_t sig,
 
        if ((err = gpgme_op_verify(ctx, sig, plain, dummy)) != GPG_ERR_NO_ERROR) {
                debug_print("op_verify err %s\n", gpgme_strerror(err));
+               privacy_set_error("%s", gpgme_strerror(err));
                return GINT_TO_POINTER(-GPG_ERR_SYSTEM_ERROR);
-               
        }
        status = gpgme_op_verify_result(ctx);
-
+       if (status && status->signatures == NULL) {
+               debug_print("no signature found\n");
+               privacy_set_error(_("No signature found"));
+               return GINT_TO_POINTER(-GPG_ERR_SYSTEM_ERROR);
+       }
        return status;
 }
 
@@ -87,14 +107,23 @@ SignatureStatus sgpgme_sigstat_gpgme_to_privacy(gpgme_ctx_t ctx, gpgme_verify_re
        debug_print("err code %d\n", gpg_err_code(sig->status));
        switch (gpg_err_code(sig->status)) {
        case GPG_ERR_NO_ERROR:
-               if ((validity != GPGME_VALIDITY_MARGINAL) &&
-                   (validity != GPGME_VALIDITY_FULL) &&
-                   (validity != GPGME_VALIDITY_ULTIMATE))
-                       return SIGNATURE_WARN;
-               return SIGNATURE_OK;
+               switch (gpg_err_code(sig->validity)) {
+               case GPGME_VALIDITY_NEVER:
+                       return SIGNATURE_INVALID;
+               case GPGME_VALIDITY_UNKNOWN:
+               case GPGME_VALIDITY_UNDEFINED:
+               case GPGME_VALIDITY_MARGINAL:
+               case GPGME_VALIDITY_FULL:
+               case GPGME_VALIDITY_ULTIMATE:
+                       return SIGNATURE_OK;
+               default:
+                       return SIGNATURE_CHECK_FAILED;
+               }
        case GPG_ERR_SIG_EXPIRED:
-       case GPG_ERR_KEY_EXPIRED:
+       case GPG_ERR_CERT_REVOKED:
                return SIGNATURE_WARN;
+       case GPG_ERR_KEY_EXPIRED:
+               return SIGNATURE_KEY_EXPIRED;
        case GPG_ERR_BAD_SIGNATURE:
                return SIGNATURE_INVALID;
        case GPG_ERR_NO_PUBKEY:
@@ -125,14 +154,35 @@ static const gchar *get_validity_str(unsigned long validity)
        }
 }
 
+static gchar *extract_name(const char *uid)
+{
+       if (uid == NULL)
+               return NULL;
+       if (!strncmp(uid, "CN=", 3)) {
+               gchar *result = g_strdup(uid+3);
+               if (strstr(result, ","))
+                       *(strstr(result, ",")) = '\0';
+               return result;
+       } else if (strstr(uid, ",CN=")) {
+               gchar *result = g_strdup(strstr(uid, ",CN=")+4);
+               if (strstr(result, ","))
+                       *(strstr(result, ",")) = '\0';
+               return result;
+       } else {
+               return g_strdup(uid);
+       }
+}
 gchar *sgpgme_sigstat_info_short(gpgme_ctx_t ctx, gpgme_verify_result_t status)
 {
        gpgme_signature_t sig = NULL;
        gchar *uname = NULL;
        gpgme_key_t key;
+       gchar *result = NULL;
+       gpgme_error_t err = 0;
+       static gboolean warned = FALSE;
 
        if (GPOINTER_TO_INT(status) == -GPG_ERR_SYSTEM_ERROR) {
-               return g_strdup(_("The signature can't be checked - GPG error."));
+               return g_strdup_printf(_("The signature can't be checked - %s"), privacy_get_error());
        }
 
        if (status == NULL) {
@@ -143,29 +193,60 @@ gchar *sgpgme_sigstat_info_short(gpgme_ctx_t ctx, gpgme_verify_result_t status)
                return g_strdup(_("The signature has not been checked."));
        }
 
-       gpgme_get_key(ctx, sig->fpr, &key, 0);
+       err = gpgme_get_key(ctx, sig->fpr, &key, 0);
+       if (gpg_err_code(err) == GPG_ERR_NO_AGENT) {
+               if (!warned)
+                       alertpanel_error(_("PGP Core: Can't get key - no gpg-agent running."));
+               else
+                       g_warning(_("PGP Core: Can't get key - no gpg-agent running."));
+               warned = TRUE;
+       } else if (gpg_err_code(err) != GPG_ERR_NO_ERROR && gpg_err_code(err) != GPG_ERR_EOF) {
+               return g_strdup_printf(_("The signature can't be checked - %s"), 
+                       gpgme_strerror(err));
+       }
        if (key)
-               uname = key->uids->uid;
+               uname = extract_name(key->uids->uid);
        else
-               uname = "<?>";
+               uname = g_strdup("<?>");
        switch (gpg_err_code(sig->status)) {
        case GPG_ERR_NO_ERROR:
-       {
-               return g_strdup_printf(_("Good signature from %s (Trust: %s)."),
-                       uname, get_validity_str(sig->validity));
-       }
+               switch (gpg_err_code(sig->validity)) {
+               case GPGME_VALIDITY_MARGINAL:
+               case GPGME_VALIDITY_FULL:
+               case GPGME_VALIDITY_ULTIMATE:
+                       result = g_strdup_printf(_("Good signature from %s."), uname);
+                       break;
+               case GPGME_VALIDITY_UNKNOWN:
+               case GPGME_VALIDITY_UNDEFINED:
+               case GPGME_VALIDITY_NEVER:
+               default:
+                       result = g_strdup_printf(_("Good signature (untrusted) from %s."), uname);
+                       break;
+               }
+               break;
        case GPG_ERR_SIG_EXPIRED:
-               return g_strdup_printf(_("Expired signature from %s."), uname);
+               result = g_strdup_printf(_("Expired signature from %s."), uname);
+               break;
        case GPG_ERR_KEY_EXPIRED:
-               return g_strdup_printf(_("Expired key from %s."), uname);
+               result = g_strdup_printf(_("Expired key from %s."), uname);
+               break;
        case GPG_ERR_BAD_SIGNATURE:
-               return g_strdup_printf(_("Bad signature from %s."), uname);
-       case GPG_ERR_NO_PUBKEY:
-               return g_strdup(_("No key available to verify this signature."));
+               result = g_strdup_printf(_("Bad signature from %s."), uname);
+               break;
+       case GPG_ERR_NO_PUBKEY: {
+               gchar *id = g_strdup(sig->fpr + strlen(sig->fpr)-8);
+               result = g_strdup_printf(_("Key 0x%s not available to verify this signature."), id);
+               g_free(id);
+               break;
+               }
        default:
-               return g_strdup(_("The signature has not been checked."));
+               result = g_strdup(_("The signature has not been checked."));
+               break;
        }
-       return g_strdup(_("Error"));
+       if (result == NULL)
+               result = g_strdup(_("Error"));
+       g_free(uname);
+       return result;
 }
 
 gchar *sgpgme_sigstat_info_full(gpgme_ctx_t ctx, gpgme_verify_result_t status)
@@ -173,36 +254,58 @@ gchar *sgpgme_sigstat_info_full(gpgme_ctx_t ctx, gpgme_verify_result_t status)
        gint i = 0;
        gchar *ret;
        GString *siginfo;
-       gpgme_signature_t sig = status->signatures;
-       
+       gpgme_signature_t sig = NULL;
+
        siginfo = g_string_sized_new(64);
+       if (status == NULL) {
+               g_string_append_printf(siginfo,
+                       _("Error checking signature: no status\n"));
+               goto bail;
+        }
+
+       sig = status->signatures;
+       
        while (sig) {
                gpgme_user_id_t user = NULL;
                gpgme_key_t key;
-
+               gpgme_error_t err;
                const gchar *keytype, *keyid, *uid;
                
-               gpgme_get_key(ctx, sig->fpr, &key, 0);
-               user = key->uids;
-
-               keytype = gpgme_pubkey_algo_name(key->subkeys->pubkey_algo);
-               keyid = key->subkeys->keyid;
+               err = gpgme_get_key(ctx, sig->fpr, &key, 0);
+
+               if (err != GPG_ERR_NO_ERROR) {
+                       key = NULL;
+                       g_string_append_printf(siginfo, 
+                               _("Error checking signature: %s\n"),
+                               gpgme_strerror(err));
+                       goto bail;
+               }
+               if (key) {
+                       user = key->uids;
+                       keytype = gpgme_pubkey_algo_name(
+                                       key->subkeys->pubkey_algo);
+                       keyid = key->subkeys->keyid;
+                       uid = user->uid;
+               } else {
+                       keytype = "?";
+                       keyid = "?";
+                       uid = "?";
+               }
                g_string_append_printf(siginfo,
                        _("Signature made using %s key ID %s\n"),
                        keytype, keyid);
                
-               uid = user->uid;
                switch (gpg_err_code(sig->status)) {
                case GPG_ERR_NO_ERROR:
                case GPG_ERR_KEY_EXPIRED:
                        g_string_append_printf(siginfo,
-                               _("Good signature from \"%s\"\n"),
-                               uid);
+                               _("Good signature from uid \"%s\" (Validity: %s)\n"),
+                               uid, get_validity_str(user?user->validity:GPGME_VALIDITY_UNKNOWN));
                        break;
                case GPG_ERR_SIG_EXPIRED:
                        g_string_append_printf(siginfo,
-                               _("Expired signature from \"%s\"\n"),
-                               uid);
+                               _("Expired signature from uid \"%s\" (Validity: %s)\n"),
+                               uid, get_validity_str(user?user->validity:GPGME_VALIDITY_UNKNOWN));
                        break;
                case GPG_ERR_BAD_SIGNATURE:
                        g_string_append_printf(siginfo,
@@ -214,24 +317,40 @@ gchar *sgpgme_sigstat_info_full(gpgme_ctx_t ctx, gpgme_verify_result_t status)
                }
                if (sig->status != GPG_ERR_BAD_SIGNATURE) {
                        gint j = 1;
-                       user = user->next;
+                       user = user ? user->next : NULL;
                        while (user != NULL) {
                                g_string_append_printf(siginfo,
-                                       _("                aka \"%s\"\n"),
-                                       user->uid);
+                                       _("                    uid \"%s\" (Validity: %s)\n"),
+                                       user->uid,
+                                       get_validity_str(user->validity));
                                j++;
                                user = user->next;
                        }
                        g_string_append_printf(siginfo,
                                _("Primary key fingerprint: %s\n"), 
-                               sig->fpr);
+                               sig ? sig->fpr: "?");
+#ifdef HAVE_GPGME_PKA_TRUST
+                        if (sig->pka_trust == 1 && sig->pka_address) {
+                                g_string_append_printf(siginfo,
+                                   _("WARNING: Signer's address \"%s\" "
+                                      "does not match DNS entry\n"), 
+                                   sig->pka_address);
+                        }
+                        else if (sig->pka_trust == 2 && sig->pka_address) {
+                                g_string_append_printf(siginfo,
+                                   _("Verified signer's address is \"%s\"\n"),
+                                   sig->pka_address);
+                                /* FIXME: Compare the address to the
+                                 * From: address.  */
+                        }
+#endif /*HAVE_GPGME_PKA_TRUST*/
                }
-               
+
                g_string_append(siginfo, "\n");
                i++;
                sig = sig->next;
        }
-
+bail:
        ret = siginfo->str;
        g_string_free(siginfo, FALSE);
        return ret;
@@ -250,19 +369,18 @@ gpgme_data_t sgpgme_data_from_mimeinfo(MimeInfo *mimeinfo)
        tmp_file = get_tmp_file();
        copy_file_part(fp, mimeinfo->offset, mimeinfo->length, tmp_file);
        fclose(fp);
-       fp = g_fopen(tmp_file, "rb");
+       fp = NULL;
        debug_print("tmp file %s\n", tmp_file);
-       if (!fp) 
-               return NULL;
        
        err = gpgme_data_new_from_file(&data, tmp_file, 1);
-       g_unlink(tmp_file);
+       claws_unlink(tmp_file);
        g_free(tmp_file);
 
        debug_print("data %p (%d %d)\n", (void *)&data, mimeinfo->offset, mimeinfo->length);
        if (err) {
                debug_print ("gpgme_data_new_from_file failed: %s\n",
                             gpgme_strerror (err));
+               privacy_set_error(_("Couldn't get data from message, %s"), gpgme_strerror(err));
                return NULL;
        }
        return data;
@@ -276,39 +394,68 @@ gpgme_data_t sgpgme_decrypt_verify(gpgme_data_t cipher, gpgme_verify_result_t *s
 
        memset (&info, 0, sizeof info);
        
-       if (gpgme_data_new(&plain) != GPG_ERR_NO_ERROR) {
+       if ((err = gpgme_data_new(&plain)) != GPG_ERR_NO_ERROR) {
                gpgme_release(ctx);
+               privacy_set_error(_("Couldn't initialize data, %s"), gpgme_strerror(err));
                return NULL;
        }
        
-       if (!getenv("GPG_AGENT_INFO")) {
+       if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
+               prefs_gpg_enable_agent(prefs_gpg_get_config()->use_gpg_agent);
+               if (!getenv("GPG_AGENT_INFO") || !prefs_gpg_get_config()->use_gpg_agent) {
+                       info.c = ctx;
+                       gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
+               }
+       } else {
+               prefs_gpg_enable_agent(TRUE);
                info.c = ctx;
-               gpgme_set_passphrase_cb (ctx, gpgmegtk_passphrase_cb, &info);
-       }
-
-       err = gpgme_op_decrypt_verify(ctx, cipher, plain);
-       if (err != GPG_ERR_NO_ERROR) {
-               debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
-               gpgmegtk_free_passphrase();
-               gpgme_data_release(plain);
-               return NULL;
+               gpgme_set_passphrase_cb (ctx, NULL, &info);
        }
+       
+       
+       if (gpgme_get_protocol(ctx) == GPGME_PROTOCOL_OpenPGP) {
+               err = gpgme_op_decrypt_verify(ctx, cipher, plain);
+               if (err != GPG_ERR_NO_ERROR) {
+                       debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
+                       privacy_set_error("%s", gpgme_strerror(err));
+                       gpgmegtk_free_passphrase();
+                       gpgme_data_release(plain);
+                       return NULL;
+               }
 
-       err = gpgme_data_rewind(plain);
-       if (err) {
-               debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
-       }
+               err = cm_gpgme_data_rewind(plain);
+               if (err) {
+                       debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
+               }
 
-       debug_print("decrypted.\n");
-       *status = gpgme_op_verify_result (ctx);
+               debug_print("decrypted.\n");
+               *status = gpgme_op_verify_result (ctx);
+       } else {
+               err = gpgme_op_decrypt(ctx, cipher, plain);
+               if (err != GPG_ERR_NO_ERROR) {
+                       debug_print("can't decrypt (%s)\n", gpgme_strerror(err));
+                       privacy_set_error("%s", gpgme_strerror(err));
+                       gpgmegtk_free_passphrase();
+                       gpgme_data_release(plain);
+                       return NULL;
+               }
+
+               err = cm_gpgme_data_rewind(plain);
+               if (err) {
+                       debug_print("can't seek (%d %d %s)\n", err, errno, strerror(errno));
+               }
 
+               debug_print("decrypted.\n");
+               *status = gpgme_op_verify_result (ctx);
+       }
        return plain;
 }
 
-gchar *sgpgme_get_encrypt_data(GSList *recp_names)
+gchar *sgpgme_get_encrypt_data(GSList *recp_names, gpgme_protocol_t proto)
 {
        SelectionResult result = KEY_SELECTION_CANCEL;
-       gpgme_key_t *keys = gpgmegtk_recipient_selection(recp_names, &result);
+       gpgme_key_t *keys = gpgmegtk_recipient_selection(recp_names, &result,
+                               proto);
        gchar *ret = NULL;
        int i = 0;
 
@@ -331,49 +478,167 @@ gchar *sgpgme_get_encrypt_data(GSList *recp_names)
        return ret;
 }
 
-gboolean sgpgme_setup_signers(gpgme_ctx_t ctx, PrefsAccount *account)
+gboolean sgpgme_setup_signers(gpgme_ctx_t ctx, PrefsAccount *account,
+                             const gchar *from_addr)
 {
        GPGAccountConfig *config;
+       const gchar *signer_addr = account->address;
 
        gpgme_signers_clear(ctx);
 
+       if (from_addr)
+               signer_addr = from_addr;
        config = prefs_gpg_account_get_config(account);
 
+       switch(config->sign_key) {
+       case SIGN_KEY_DEFAULT:
+               debug_print("using default gnupg key\n");
+               break;
+       case SIGN_KEY_BY_FROM:
+               debug_print("using key for %s\n", signer_addr);
+               break;
+       case SIGN_KEY_CUSTOM:
+               debug_print("using key for %s\n", config->sign_key_id);
+               break;
+       }
+
        if (config->sign_key != SIGN_KEY_DEFAULT) {
-               gchar *keyid;
-               gpgme_key_t key;
+               const gchar *keyid;
+               gpgme_key_t key, key2;
+               gpgme_error_t err;
 
                if (config->sign_key == SIGN_KEY_BY_FROM)
-                       keyid = account->address;
+                       keyid = signer_addr;
                else if (config->sign_key == SIGN_KEY_CUSTOM)
                        keyid = config->sign_key_id;
                else
-                       return FALSE;
-
-               gpgme_op_keylist_start(ctx, keyid, 1);
-               while (!gpgme_op_keylist_next(ctx, &key)) {
-                       gpgme_signers_add(ctx, key);
-                       gpgme_key_release(key);
+                       goto bail;
+
+               err = gpgme_op_keylist_start(ctx, keyid, 1);
+               if (!err) {
+                       do {
+                               err = gpgme_op_keylist_next(ctx, &key);
+                               if (!err && key && key->protocol == gpgme_get_protocol(ctx) &&
+                                   !key->expired && !key->revoked && !key->disabled)
+                                       break;
+                               if (!err && key && key->protocol != gpgme_get_protocol(ctx)) {
+                                       debug_print("skipping a key (wrong protocol %d)\n", key->protocol);
+                                       gpgme_key_release(key);
+                               }
+                               if (!err && key && (key->expired || key->revoked || key->disabled)) {
+                                       
+                                       debug_print("skipping a key");
+                                       if (key->expired) 
+                                               debug_print(" expired");
+                                       if (key->revoked) 
+                                               debug_print(" revoked");
+                                       if (key->disabled) 
+                                               debug_print(" disabled");
+                                       debug_print("\n");
+                                       gpgme_key_release(key);
+                               }
+                       } while (!err);
+               }
+               if (err) {
+                       g_warning("setup_signers start: %s", gpgme_strerror(err));
+                       privacy_set_error(_("Secret key not found (%s)"), gpgme_strerror(err));
+                       goto bail;
+               }
+               
+               do {
+                       err = gpgme_op_keylist_next(ctx, &key2);
+                       if (!err && key2 && key2->protocol == gpgme_get_protocol(ctx) &&
+                           !key2->expired && !key2->revoked && !key2->disabled)
+                               break;
+                       if (!err && key2 && key2->protocol != gpgme_get_protocol(ctx)) {
+                               debug_print("skipping a key (wrong protocol %d)\n", key2->protocol);
+                               gpgme_key_release(key2);
+                       }
+                       if (!err && key2 && (key2->expired || key2->revoked || key2->disabled)) {
+                                       debug_print("skipping a key");
+                                       if (key2->expired) 
+                                               debug_print(" expired");
+                                       if (key2->revoked) 
+                                               debug_print(" revoked");
+                                       if (key2->disabled) 
+                                               debug_print(" disabled");
+                                       debug_print("\n");
+                               gpgme_key_release(key2);
+                       }
+               } while (!err);
+               if (!err) {
+                       gpgme_key_release(key2);
+                       g_warning("ambiguous specification of secret key '%s'\n",
+                               keyid);
+                       privacy_set_error(_("Secret key specification is ambiguous"));
+                       goto bail;
                }
+               
                gpgme_op_keylist_end(ctx);
+               err = gpgme_signers_add(ctx, key);
+               debug_print("got key (proto %d (pgp %d, smime %d).\n", key->protocol,
+                               GPGME_PROTOCOL_OpenPGP, GPGME_PROTOCOL_CMS);
+               gpgme_key_release(key);
+               
+               if (err) {
+                       g_warning("error adding secret key: %s\n", gpgme_strerror(err));
+                       privacy_set_error(_("Error setting secret key: %s"), gpgme_strerror(err));
+                       goto bail;
+               }
        }
 
        prefs_gpg_account_free_config(config);
 
        return TRUE;
+bail:
+       prefs_gpg_account_free_config(config);
+       return FALSE;
 }
 
 void sgpgme_init()
 {
        gpgme_engine_info_t engineInfo;
-       if (gpgme_check_version("0.4.5")) {
+       if (gpgme_check_version("1.0.0")) {
+#ifdef LC_CTYPE
                gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
+#endif
+#ifdef LC_MESSAGES
                gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
+#endif
                if (!gpgme_get_engine_info(&engineInfo)) {
                        while (engineInfo) {
-                               debug_print("GpgME Protocol: %s\n      Version: %s\n",
-                                       gpgme_get_protocol_name(engineInfo->protocol),
-                                       engineInfo->version);
+#ifndef G_OS_WIN32
+                               debug_print("GpgME Protocol: %s\n"
+                                           "Version: %s (req %s)\n"
+                                           "Executable: %s\n",
+                                       gpgme_get_protocol_name(engineInfo->protocol) ? gpgme_get_protocol_name(engineInfo->protocol):"???",
+                                       engineInfo->version ? engineInfo->version:"???",
+                                       engineInfo->req_version ? engineInfo->req_version:"???",
+                                       engineInfo->file_name ? engineInfo->file_name:"???");
+#endif
+                               if (engineInfo->protocol == GPGME_PROTOCOL_OpenPGP
+                               &&  gpgme_engine_check_version(engineInfo->protocol) != 
+                                       GPG_ERR_NO_ERROR) {
+                                       if (engineInfo->file_name && !engineInfo->version) {
+                                               alertpanel_error(_("Gpgme protocol '%s' is unusable: "
+                                                                  "Engine '%s' isn't installed properly."),
+                                                                  gpgme_get_protocol_name(engineInfo->protocol),
+                                                                  engineInfo->file_name);
+                                       } else if (engineInfo->file_name && engineInfo->version
+                                         && engineInfo->req_version) {
+                                               alertpanel_error(_("Gpgme protocol '%s' is unusable: "
+                                                                  "Engine '%s' version %s is installed, "
+                                                                  "but version %s is required.\n"),
+                                                                  gpgme_get_protocol_name(engineInfo->protocol),
+                                                                  engineInfo->file_name,
+                                                                  engineInfo->version,
+                                                                  engineInfo->req_version);
+                                       } else {
+                                               alertpanel_error(_("Gpgme protocol '%s' is unusable "
+                                                                  "(unknown problem)"),
+                                                                  gpgme_get_protocol_name(engineInfo->protocol));
+                                       }
+                               }
                                engineInfo = engineInfo->next;
                        }
                }
@@ -401,4 +666,258 @@ void sgpgme_done()
         gpgmegtk_free_passphrase();
 }
 
+void sgpgme_create_secret_key(PrefsAccount *account, gboolean ask_create)
+{
+       AlertValue val = G_ALERTDEFAULT;
+       gchar *key_parms = NULL;
+       gchar *name = NULL;
+       gchar *email = NULL;
+       gchar *passphrase = NULL, *passphrase_second = NULL;
+       gint prev_bad = 0;
+       gchar *tmp = NULL;
+       gpgme_error_t err = 0;
+       gpgme_ctx_t ctx;
+       GtkWidget *window = NULL;
+       gpgme_genkey_result_t key;
+
+       if (account == NULL)
+               account = account_get_default();
+
+       if (account->address == NULL) {
+               alertpanel_error(_("You have to save the account's information with \"OK\" "
+                                  "before being able to generate a key pair.\n"));
+               return;
+       }
+       if (ask_create) {
+               val = alertpanel(_("No PGP key found"),
+                               _("Claws Mail did not find a secret PGP key, "
+                                 "which means that you won't be able to sign "
+                                 "emails or receive encrypted emails.\n"
+                                 "Do you want to create a new key pair now?"),
+                                 GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
+               if (val == G_ALERTDEFAULT) {
+                       prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
+                       prefs_gpg_save_config();
+                       return;
+               }
+       }
+
+       if (account->name) {
+               name = g_strdup(account->name);
+       } else {
+               name = g_strdup(account->address);
+       }
+       email = g_strdup(account->address);
+       tmp = g_strdup_printf("%s <%s>", account->name?account->name:account->address, account->address);
+again:
+       passphrase = passphrase_mbox(tmp, NULL, prev_bad, 1);
+       if (passphrase == NULL) {
+               g_free(tmp);
+               g_free(email);
+               g_free(name);           
+               return;
+       }
+       passphrase_second = passphrase_mbox(tmp, NULL, 0, 2);
+       if (passphrase_second == NULL) {
+               g_free(tmp);
+               g_free(email);
+               g_free(passphrase);             
+               g_free(name);           
+               return;
+       }
+       if (strcmp(passphrase, passphrase_second)) {
+               g_free(passphrase);
+               g_free(passphrase_second);
+               prev_bad = 1;
+               goto again;
+       }
+       
+       key_parms = g_strdup_printf("<GnupgKeyParms format=\"internal\">\n"
+                                       "Key-Type: DSA\n"
+                                       "Key-Length: 1024\n"
+                                       "Subkey-Type: ELG-E\n"
+                                       "Subkey-Length: 2048\n"
+                                       "Name-Real: %s\n"
+                                       "Name-Email: %s\n"
+                                       "Expire-Date: 0\n"
+                                       "%s%s%s"
+                                       "</GnupgKeyParms>\n",
+                                       name, email, 
+                                       strlen(passphrase)?"Passphrase: ":"",
+                                       passphrase,
+                                       strlen(passphrase)?"\n":"");
+#ifndef G_PLATFORM_WIN32
+       if (mlock(passphrase, strlen(passphrase)) == -1)
+               debug_print("couldn't lock passphrase\n");
+       if (mlock(passphrase_second, strlen(passphrase_second)) == -1)
+               debug_print("couldn't lock passphrase2\n");
+#endif
+       g_free(tmp);
+       g_free(email);
+       g_free(name);
+       g_free(passphrase_second);
+       g_free(passphrase);
+       
+       err = gpgme_new (&ctx);
+       if (err) {
+               alertpanel_error(_("Couldn't generate a new key pair: %s"),
+                                gpgme_strerror(err));
+               g_free(key_parms);
+               return;
+       }
+       
+
+       window = label_window_create(_("Generating your new key pair... Please move the mouse "
+                             "around to help generate entropy..."));
+
+       err = gpgme_op_genkey(ctx, key_parms, NULL, NULL);
+       g_free(key_parms);
+
+       label_window_destroy(window);
+
+       if (err) {
+               alertpanel_error(_("Couldn't generate a new key pair: %s"), gpgme_strerror(err));
+               gpgme_release(ctx);
+               return;
+       }
+       key = gpgme_op_genkey_result(ctx);
+       if (key == NULL) {
+               alertpanel_error(_("Couldn't generate a new key pair: unknown error"));
+               gpgme_release(ctx);
+               return;
+       } else {
+               gchar *buf = g_strdup_printf(_("Your new key pair has been generated. "
+                                   "Its fingerprint is:\n%s\n\nDo you want to export it "
+                                   "to a keyserver?"),
+                                   key->fpr ? key->fpr:"null");
+               AlertValue val = alertpanel(_("Key generated"), buf,
+                                 GTK_STOCK_NO, "+" GTK_STOCK_YES, NULL);
+               g_free(buf);
+               if (val == G_ALERTALTERNATE) {
+#ifndef G_OS_WIN32
+                       gchar *cmd = g_strdup_printf("gpg --no-tty --send-keys %s", key->fpr);
+                       int res = 0;
+                       pid_t pid = 0;
+                       pid = fork();
+                       if (pid == -1) {
+                               res = -1;
+                       } else if (pid == 0) {
+                               /* son */
+                               res = system(cmd);
+                               res = WEXITSTATUS(res);
+                               _exit(res);
+                       } else {
+                               int status = 0;
+                               time_t start_wait = time(NULL);
+                               res = -1;
+                               do {
+                                       if (waitpid(pid, &status, WNOHANG) == 0 || !WIFEXITED(status)) {
+                                               usleep(200000);
+                                       } else {
+                                               res = WEXITSTATUS(status);
+                                               break;
+                                       }
+                                       if (time(NULL) - start_wait > 5) {
+                                               debug_print("SIGTERM'ing gpg\n");
+                                               kill(pid, SIGTERM);
+                                       }
+                                       if (time(NULL) - start_wait > 6) {
+                                               debug_print("SIGKILL'ing gpg\n");
+                                               kill(pid, SIGKILL);
+                                               break;
+                                       }
+                               } while(1);
+                       }
+                       if (res == 0) {
+                               alertpanel_notice(_("Key exported."));
+                       } else {
+                               alertpanel_error(_("Couldn't export key."));
+                       }
+                       g_free(cmd);
+#else
+                       alertpanel_error(_("Key export isn't implemented in Windows."));
+#endif
+               }
+       }
+       prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
+       prefs_gpg_save_config();
+       gpgme_release(ctx);
+}
+
+gboolean sgpgme_has_secret_key(void)
+{
+       gpgme_error_t err = 0;
+       gpgme_ctx_t ctx;
+       gpgme_key_t key;
+
+       err = gpgme_new (&ctx);
+       if (err) {
+               debug_print("err : %s\n", gpgme_strerror(err));
+               return TRUE;
+       }
+       err = gpgme_op_keylist_start(ctx, NULL, TRUE);
+       if (!err)
+               err = gpgme_op_keylist_next(ctx, &key);
+       gpgme_op_keylist_end(ctx);
+       gpgme_release(ctx);
+       if (gpg_err_code(err) == GPG_ERR_EOF)
+               return FALSE;
+       else
+               return TRUE;
+}
+
+void sgpgme_check_create_key(void)
+{
+       if (prefs_gpg_get_config()->gpg_ask_create_key &&
+           !sgpgme_has_secret_key()) {
+               sgpgme_create_secret_key(NULL, TRUE);
+       } else {
+               prefs_gpg_get_config()->gpg_ask_create_key = FALSE;
+               prefs_gpg_save_config();
+       }       
+}
+
+void *sgpgme_data_release_and_get_mem(gpgme_data_t data, size_t *len)
+{
+       char buf[BUFSIZ];
+       void *result = NULL;
+       ssize_t r = 0;
+       size_t w = 0;
+       
+       if (data == NULL)
+               return NULL;
+       if (len == NULL)
+               return NULL;
+
+       /* I know it's deprecated, but we don't compile with _LARGEFILE */
+       cm_gpgme_data_rewind(data);
+       while ((r = gpgme_data_read(data, buf, BUFSIZ)) > 0) {
+               result = realloc(result, r + w);
+               memcpy(result+w, buf, r);
+               w += r;
+       }
+       
+       *len = w;
+
+       gpgme_data_release(data);
+       if (r < 0) {
+               free(result);
+               *len = 0;
+               return NULL;
+       }
+       return result;
+}
+
+gpgme_error_t cm_gpgme_data_rewind(gpgme_data_t dh)
+{
+#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64
+       if (gpgme_data_seek(dh, (off_t)0, SEEK_SET) == -1)
+               return gpg_error_from_errno(errno);
+       else
+               return 0;
+#else
+       return gpgme_data_rewind(dh);
+#endif
+}
+
 #endif /* USE_GPGME */