[evolution-data-server] I#40 - [IMAPx] Support RFC 6855 (IMAP Support for UTF-8) ][

[Milan Crha <mcrha src gnome org>]

commit 5621d10327bf050666ff9c3a4b80d5ccc3c743fa
Author: Milan Crha <mcrha redhat com>
Date:   Fri Oct 5 09:19:22 2018 +0200

    I#40 - [IMAPx] Support RFC 6855 (IMAP Support for UTF-8) ][
    
    Related to https://gitlab.gnome.org/GNOME/evolution-data-server/issues/40

 src/camel/providers/imapx/camel-imapx-command.c | 28 +++++++++++++++++++------
 src/camel/providers/imapx/camel-imapx-server.c  | 20 ++++++++++++++++--
 src/camel/providers/imapx/camel-imapx-server.h  |  2 ++
 3 files changed, 42 insertions(+), 8 deletions(-)
---
diff --git a/src/camel/providers/imapx/camel-imapx-command.c b/src/camel/providers/imapx/camel-imapx-command.c
index dffa8f017..acd2b1084 100644
--- a/src/camel/providers/imapx/camel-imapx-command.c
+++ b/src/camel/providers/imapx/camel-imapx-command.c
@@ -198,6 +198,7 @@ camel_imapx_command_addv (CamelIMAPXCommand *ic,
        GString *buffer;
        gchar *utf7_name = NULL;
        const gchar *name;
+       gboolean use_utf8_string = FALSE;
 
        g_return_if_fail (CAMEL_IS_IMAPX_COMMAND (ic));
 
@@ -265,14 +266,19 @@ camel_imapx_command_addv (CamelIMAPXCommand *ic,
                                break;
                        case 's': /* simple string */
                                s = va_arg (ap, gchar *);
+                               use_utf8_string = FALSE;
                                c (camel_imapx_server_get_tagprefix (ic->is), "got string '%s'\n", 
g_str_has_prefix (format, "LOGIN") ? "***" : s);
                        output_string:
                                if (s && *s) {
                                        guchar mask = imapx_is_mask (s);
 
-                                       if (mask & IMAPX_TYPE_ATOM_CHAR)
+                                       if (use_utf8_string && !(mask & IMAPX_TYPE_ATOM_CHAR)) {
+                                               g_string_append_c (buffer, '"');
+                                               g_string_append (buffer, s);
+                                               g_string_append_c (buffer, '"');
+                                       } else if (mask & IMAPX_TYPE_ATOM_CHAR) {
                                                g_string_append (buffer, s);
-                                       else if (mask & IMAPX_TYPE_TEXT_CHAR) {
+                                       } else if (mask & IMAPX_TYPE_TEXT_CHAR) {
                                                gboolean is_gmail_search = FALSE;
 
                                                g_string_append_c (buffer, '"');
@@ -312,13 +318,23 @@ camel_imapx_command_addv (CamelIMAPXCommand *ic,
                        case 'M': /* CamelIMAPXMailbox */
                                mailbox = va_arg (ap, CamelIMAPXMailbox *);
                                name = camel_imapx_mailbox_get_name (mailbox);
-                               utf7_name = camel_utf8_utf7 (name);
-                               s = utf7_name;
+                               if (camel_imapx_server_get_utf8_accept (ic->is)) {
+                                       use_utf8_string = TRUE;
+                                       s = (gchar *) name;
+                               } else {
+                                       utf7_name = camel_utf8_utf7 (name);
+                                       s = utf7_name;
+                               }
                                goto output_string;
                        case 'm': /* UTF-8 mailbox name */
                                name = va_arg (ap, gchar *);
-                               utf7_name = camel_utf8_utf7 (name);
-                               s = utf7_name;
+                               if (camel_imapx_server_get_utf8_accept (ic->is)) {
+                                       use_utf8_string = TRUE;
+                                       s = (gchar *) name;
+                               } else {
+                                       utf7_name = camel_utf8_utf7 (name);
+                                       s = utf7_name;
+                               }
                                goto output_string;
                        case 'F': /* IMAP flags set */
                                f = va_arg (ap, guint32);
diff --git a/src/camel/providers/imapx/camel-imapx-server.c b/src/camel/providers/imapx/camel-imapx-server.c
index cc82d1e5a..04d88c51b 100644
--- a/src/camel/providers/imapx/camel-imapx-server.c
+++ b/src/camel/providers/imapx/camel-imapx-server.c
@@ -320,6 +320,8 @@ struct _CamelIMAPXServerPrivate {
        GHashTable *list_responses_hash; /* ghar *mailbox-name ~> CamelIMAPXListResponse *, both owned by 
list_responses */
        GSList *list_responses;
        GSList *lsub_responses;
+
+       gboolean utf8_accept; /* RFC 6855 */
 };
 
 enum {
@@ -3339,6 +3341,8 @@ preauthed:
        /* Fetch namespaces (if supported). */
        g_mutex_lock (&is->priv->stream_lock);
 
+       is->priv->utf8_accept = FALSE;
+
        /* RFC 6855 */
        if (CAMEL_IMAPX_HAVE_CAPABILITY (is->priv->cinfo, UTF8_ACCEPT) ||
            CAMEL_IMAPX_HAVE_CAPABILITY (is->priv->cinfo, UTF8_ONLY)) {
@@ -3356,6 +3360,8 @@ preauthed:
                }
 
                g_mutex_lock (&is->priv->stream_lock);
+
+               is->priv->utf8_accept = TRUE;
        }
 
        if (CAMEL_IMAPX_HAVE_CAPABILITY (is->priv->cinfo, NAMESPACE)) {
@@ -6592,8 +6598,10 @@ camel_imapx_server_uid_search_sync (CamelIMAPXServer *is,
        if (!success)
                return FALSE;
 
-       for (ii = 0; !need_charset && words && words[ii]; ii++) {
-               need_charset = !imapx_util_all_is_ascii (words[ii]);
+       if (!camel_imapx_server_get_utf8_accept (is)) {
+               for (ii = 0; !need_charset && words && words[ii]; ii++) {
+                       need_charset = !imapx_util_all_is_ascii (words[ii]);
+               }
        }
 
        ic = camel_imapx_command_new (is, CAMEL_IMAPX_JOB_UID_SEARCH, "UID SEARCH");
@@ -7181,6 +7189,14 @@ camel_imapx_server_set_tagprefix (CamelIMAPXServer *is,
        is->priv->tagprefix = tagprefix;
 }
 
+gboolean
+camel_imapx_server_get_utf8_accept (CamelIMAPXServer *is)
+{
+       g_return_val_if_fail (CAMEL_IS_IMAPX_SERVER (is), FALSE);
+
+       return is->priv->utf8_accept;
+}
+
 CamelIMAPXCommand *
 camel_imapx_server_ref_current_command (CamelIMAPXServer *is)
 {
diff --git a/src/camel/providers/imapx/camel-imapx-server.h b/src/camel/providers/imapx/camel-imapx-server.h
index c8f7cfe75..fb937b17c 100644
--- a/src/camel/providers/imapx/camel-imapx-server.h
+++ b/src/camel/providers/imapx/camel-imapx-server.h
@@ -147,6 +147,8 @@ gchar               camel_imapx_server_get_tagprefix
 void           camel_imapx_server_set_tagprefix
                                                (CamelIMAPXServer *is,
                                                 gchar tagprefix);
+gboolean       camel_imapx_server_get_utf8_accept
+                                               (CamelIMAPXServer *is);
 CamelIMAPXCommand *
                camel_imapx_server_ref_current_command
                                                (CamelIMAPXServer *is);