[evolution-data-server] I#361 - Camel: Understand non-standard "Content-Transfer-Encoding: uuencode"

[Milan Crha <mcrha src gnome org>]

commit 882ebf6d101fbe4c1b51272e302732c5ab88d881
Author: Milan Crha <mcrha redhat com>
Date:   Thu Sep 30 17:04:28 2021 +0200

    I#361 - Camel: Understand non-standard "Content-Transfer-Encoding: uuencode"
    
    The expected encoding name is "x-uuencode", but some clients generate
    the value as "uuencode", thus count with it too.
    
    Closes https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/361

 src/camel/camel-folder-summary.c | 3 ++-
 src/camel/camel-mime-utils.c     | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/src/camel/camel-folder-summary.c b/src/camel/camel-folder-summary.c
index 8cb6dba9f..709fa23e8 100644
--- a/src/camel/camel-folder-summary.c
+++ b/src/camel/camel-folder-summary.c
@@ -3139,7 +3139,8 @@ summary_traverse_content_with_parser (CamelFolderSummary *summary,
                                        else
                                                camel_mime_filter_reset (summary->priv->filter_qp);
                                        enc_id = camel_mime_parser_filter_add (mp, summary->priv->filter_qp);
-                               } else if (!g_ascii_strcasecmp (encoding, "x-uuencode")) {
+                               } else if (!g_ascii_strcasecmp (encoding, "x-uuencode") ||
+                                          !g_ascii_strcasecmp (encoding, "uuencode")) {
                                        d (printf (" decoding x-uuencode\n"));
                                        if (summary->priv->filter_uu == NULL)
                                                summary->priv->filter_uu = camel_mime_filter_basic_new 
(CAMEL_MIME_FILTER_BASIC_UU_DEC);
diff --git a/src/camel/camel-mime-utils.c b/src/camel/camel-mime-utils.c
index 25a626d8e..761811bb1 100644
--- a/src/camel/camel-mime-utils.c
+++ b/src/camel/camel-mime-utils.c
@@ -3303,6 +3303,9 @@ camel_transfer_encoding_from_string (const gchar *string)
                for (i = 0; i < G_N_ELEMENTS (encodings); i++)
                        if (!g_ascii_strcasecmp (string, encodings[i]))
                                return i;
+
+               if (!g_ascii_strcasecmp (string, "uuencode"))
+                       return CAMEL_TRANSFER_ENCODING_UUENCODE;
        }
 
        return CAMEL_TRANSFER_ENCODING_DEFAULT;