[evolution-data-server] [IMAPx] Ignore broken (truncated) COPYUID server response

[Milan Crha <mcrha src gnome org>]

commit e0c53f29a1b7b3dc4ab5740935c7b5eda1f79a29
Author: Milan Crha <mcrha redhat com>
Date:   Fri Aug 7 07:23:36 2015 +0200

    [IMAPx] Ignore broken (truncated) COPYUID server response

 camel/providers/imapx/camel-imapx-input-stream.c |    3 ++
 camel/providers/imapx/camel-imapx-utils.c        |   36 +++++++++++++++++++--
 2 files changed, 35 insertions(+), 4 deletions(-)
---
diff --git a/camel/providers/imapx/camel-imapx-input-stream.c 
b/camel/providers/imapx/camel-imapx-input-stream.c
index 706fafe..8b1e8c8 100644
--- a/camel/providers/imapx/camel-imapx-input-stream.c
+++ b/camel/providers/imapx/camel-imapx-input-stream.c
@@ -710,6 +710,9 @@ camel_imapx_input_stream_token (CamelIMAPXInputStream *is,
                return is->priv->unget_tok;
        }
 
+       *data = NULL;
+       *len = 0;
+
        if (is->priv->literal > 0 && !g_cancellable_is_cancelled (cancellable))
                g_warning (
                        "stream_token called with literal %d",
diff --git a/camel/providers/imapx/camel-imapx-utils.c b/camel/providers/imapx/camel-imapx-utils.c
index 956b22b..c63de65 100644
--- a/camel/providers/imapx/camel-imapx-utils.c
+++ b/camel/providers/imapx/camel-imapx-utils.c
@@ -2101,7 +2101,7 @@ imapx_parse_uids (CamelIMAPXInputStream *stream,
                   GError **error)
 {
        GArray *array;
-       guchar *token;
+       guchar *token = NULL;
        gchar **splits;
        guint len, str_len;
        gint tok, ii;
@@ -2113,6 +2113,11 @@ imapx_parse_uids (CamelIMAPXInputStream *stream,
        if (tok < 0)
                return NULL;
 
+       if (!token) {
+               g_set_error (error, CAMEL_IMAPX_ERROR, 2, "server response truncated");
+               return NULL;
+       }
+
        array = g_array_new (FALSE, FALSE, sizeof (guint32));
        splits = g_strsplit ((gchar *) token, ",", -1);
        str_len = g_strv_length (splits);
@@ -2188,6 +2193,7 @@ imapx_parse_status_copyuid (CamelIMAPXInputStream *stream,
        GArray *uids;
        guint64 number;
        gboolean success;
+       GError *local_error = NULL;
 
        success = camel_imapx_input_stream_number (
                stream, &number, cancellable, error);
@@ -2197,15 +2203,37 @@ imapx_parse_status_copyuid (CamelIMAPXInputStream *stream,
 
        sinfo->u.copyuid.uidvalidity = number;
 
-       uids = imapx_parse_uids (stream, cancellable, error);
-       if (uids == NULL)
+       uids = imapx_parse_uids (stream, cancellable, &local_error);
+       if (uids == NULL) {
+               /* Some broken servers can return truncated response, like:
+                  B00083 OK [COPYUID 4154  ] COPY completed.
+                  Just ignore such server error.
+               */
+               if (g_error_matches (local_error, CAMEL_IMAPX_ERROR, 2)) {
+                       g_clear_error (&local_error);
+                       return TRUE;
+               }
+
+               if (local_error)
+                       g_propagate_error (error, local_error);
+
                return FALSE;
+       }
 
        sinfo->u.copyuid.uids = uids;
 
        uids = imapx_parse_uids (stream, cancellable, error);
-       if (uids == NULL)
+       if (uids == NULL) {
+               if (g_error_matches (local_error, CAMEL_IMAPX_ERROR, 2)) {
+                       g_clear_error (&local_error);
+                       return TRUE;
+               }
+
+               if (local_error)
+                       g_propagate_error (error, local_error);
+
                return FALSE;
+       }
 
        sinfo->u.copyuid.copied_uids = uids;