[balsa/autocrypt] Minor autocrypt fixes

[Peter Bloomfield <peterb src gnome org>]

commit e47295f62986f5258abf0155eba05e22bedeab28
Author: Albrecht Dreß <albrecht dress arcor de>
Date:   Thu Jan 10 21:50:29 2019 -0500

    Minor autocrypt fixes
    
    * libbalsa/autocrypt.c: set a proper error message if no
      fingerprint of a usable private key can be identified for a
      mailbox; fix memory leak; attach Autocrypt database window to
      geometry manager
    * libbalsa/send.c: do not add Autocrypt header when postponing;
      propagate error from creating Autocrypt header
    * src/save-restore.c: restore Autocrypt database window geometry
    
    Signed-off-by: Peter Bloomfield <PeterBloomfield bellsouth net>

 ChangeLog            | 12 ++++++++++++
 libbalsa/autocrypt.c | 44 ++++++++++++++++++++++++++++----------------
 libbalsa/send.c      |  4 ++--
 src/save-restore.c   |  5 ++++-
 4 files changed, 46 insertions(+), 19 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index f852ce015..ea52b1176 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2018-01-10  Albrecht Dreß  <albrecht dress arcor de>
+
+       Minor autocrypt fixes
+
+       * libbalsa/autocrypt.c: set a proper error message if no
+         fingerprint of a usable private key can be identified for a
+         mailbox; fix memory leak; attach Autocrypt database window to
+         geometry manager
+       * libbalsa/send.c: do not add Autocrypt header when postponing;
+         propagate error from creating Autocrypt header
+       * src/save-restore.c: restore Autocrypt database window geometry
+
 2018-01-05  Albrecht Dreß  <albrecht dress arcor de>
 
        make IMAP messages translatable
diff --git a/libbalsa/autocrypt.c b/libbalsa/autocrypt.c
index cfcb6aae5..6c6c5f5a7 100644
--- a/libbalsa/autocrypt.c
+++ b/libbalsa/autocrypt.c
@@ -32,6 +32,7 @@
 #include "libbalsa-gpgme-keys.h"
 #include "libbalsa-gpgme-widgets.h"
 #include "identity.h"
+#include "geometry-manager.h"
 #include "autocrypt.h"
 
 
@@ -297,7 +298,6 @@ autocrypt_header(const LibBalsaIdentity *identity, GError **error)
        const gchar *mailbox;
        gchar *use_fpr = NULL;
        gchar *result = NULL;
-       gchar *keydata;
 
        g_return_val_if_fail((identity != NULL) && (identity->autocrypt_mode != AUTOCRYPT_DISABLE), NULL);
        mailbox = internet_address_mailbox_get_addr(INTERNET_ADDRESS_MAILBOX(identity->ia));
@@ -321,27 +321,38 @@ autocrypt_header(const LibBalsaIdentity *identity, GError **error)
                        }
                        gpgme_release(ctx);
                }
-               g_debug("found fingerprint %s for '%s'", use_fpr, mailbox);
+
+               if (use_fpr == NULL) {
+                       g_set_error(error, AUTOCRYPT_ERROR_QUARK, -1,
+                               _("No usable private key for “%s” found! Please create a key or disable 
Autocrypt."), mailbox);
+               } else {
+                       g_debug("found fingerprint %s for '%s'", use_fpr, mailbox);
+               }
        } else {
                use_fpr = g_strdup(identity->force_gpg_key_id);
        }
 
-       keydata = libbalsa_gpgme_export_autocrypt_key(use_fpr, mailbox, error);
-       g_free(use_fpr);
-       if (keydata != NULL) {
-               GString *buffer;
-               gssize ins_fws;
+       if (use_fpr != NULL) {
+               gchar *keydata;
 
-               buffer = g_string_new(NULL);
-               g_string_append_printf(buffer, "addr=%s;", mailbox);
-               if (identity->autocrypt_mode == AUTOCRYPT_PREFER_ENCRYPT) {
-                       g_string_append(buffer, "prefer-encrypt=mutual;");
-               }
-               g_string_append_printf(buffer, "keydata=%s", keydata);
-               for (ins_fws = 66U; ins_fws < (gssize) buffer->len; ins_fws += 78) {
-                       g_string_insert(buffer, ins_fws, "\n\t");
+               keydata = libbalsa_gpgme_export_autocrypt_key(use_fpr, mailbox, error);
+               g_free(use_fpr);
+               if (keydata != NULL) {
+                       GString *buffer;
+                       gssize ins_fws;
+
+                       buffer = g_string_new(NULL);
+                       g_string_append_printf(buffer, "addr=%s;", mailbox);
+                       if (identity->autocrypt_mode == AUTOCRYPT_PREFER_ENCRYPT) {
+                               g_string_append(buffer, "prefer-encrypt=mutual;");
+                       }
+                       g_string_append_printf(buffer, "keydata=%s", keydata);
+                       for (ins_fws = 66; ins_fws < (gssize) buffer->len; ins_fws += 78) {
+                               g_string_insert(buffer, ins_fws, "\n\t");
+                       }
+                       result = g_string_free(buffer, FALSE);
+                       g_free(keydata);
                }
-               result = g_string_free(buffer, FALSE);
        }
 
        return result;
@@ -444,6 +455,7 @@ autocrypt_db_dialog_run(const gchar *date_string, GtkWindow *parent)
 
        dialog = gtk_dialog_new_with_buttons(_("Autocrypt database"), parent,
                GTK_DIALOG_DESTROY_WITH_PARENT | libbalsa_dialog_flags(), _("_Close"), GTK_RESPONSE_CLOSE, 
NULL);
+       geometry_manager_attach(GTK_WINDOW(dialog), "AutocryptDB");
 
     vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);
     gtk_container_add(GTK_CONTAINER(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), vbox);
diff --git a/libbalsa/send.c b/libbalsa/send.c
index 33ed67fed..38947d2af 100644
--- a/libbalsa/send.c
+++ b/libbalsa/send.c
@@ -1511,9 +1511,9 @@ libbalsa_message_create_mime_message(LibBalsaMessage *message,
 
 #ifdef ENABLE_AUTOCRYPT
     /* add Autocrypt header if requested */
-    if ((message->ident != NULL) && (message->ident->autocrypt_mode != AUTOCRYPT_DISABLE) &&
+    if (!postponing && (message->ident != NULL) && (message->ident->autocrypt_mode != AUTOCRYPT_DISABLE) &&
        !autocrypt_ignore(g_mime_object_get_content_type(mime_root))) {
-       tmp = autocrypt_header(message->ident, NULL);
+       tmp = autocrypt_header(message->ident, error);
        if (tmp == NULL) {
                g_object_unref(G_OBJECT(mime_message));
                return LIBBALSA_MESSAGE_CREATE_ERROR;
diff --git a/src/save-restore.c b/src/save-restore.c
index 4c96754c3..23313fb9c 100644
--- a/src/save-restore.c
+++ b/src/save-restore.c
@@ -695,7 +695,10 @@ config_global_load(void)
 #ifdef HAVE_GPGME
     geometry_manager_init("KeyDialog", 400, 200, FALSE);
     geometry_manager_init("KeyList", 300, 200, FALSE);
-#endif
+#ifdef ENABLE_AUTOCRYPT
+    geometry_manager_init("AutocryptDB", 300, 200, FALSE);
+#endif  /* ENABLE_AUTOCRYPT */
+#endif  /* HAVE_GPGME */
 
     /* FIXME: PKGW: why comment this out? Breaks my Transfer context menu. */
     if (balsa_app.mblist_width < 100)