[gmime: 10/27] Use g_utf8_validate instead of is_7bit_clean because of newer international mail standards

[Jeffrey Stedfast <fejj src gnome org>]

commit 398b3d97a5f1af8a644ec3f922ca7fa53795a2a3
Author: Jeffrey Stedfast <jestedfa microsoft com>
Date:   Wed Nov 8 16:17:21 2017 -0500

    Use g_utf8_validate instead of is_7bit_clean because of newer international mail standards

 gmime/gmime-parser.c |   29 ++++++++---------------------
 1 files changed, 8 insertions(+), 21 deletions(-)
---
diff --git a/gmime/gmime-parser.c b/gmime/gmime-parser.c
index eaa61c7..1b6d47a 100644
--- a/gmime/gmime-parser.c
+++ b/gmime/gmime-parser.c
@@ -263,8 +263,8 @@ parser_find_header (GMimeParser *parser, const char *name, gint64 *offset)
        Header *header;
        guint i;
        
-       for (i = priv->headers->len; i > 0U; --i) {
-               header = priv->headers->pdata[i - 1U];
+       for (i = priv->headers->len; i > 0; i--) {
+               header = priv->headers->pdata[i - 1];
                
                if (g_ascii_strcasecmp (header->name, name) != 0)
                        continue;
@@ -869,17 +869,6 @@ next_alloc_size (size_t n)
        priv->headerleft -= len;                                          \
 } G_STMT_END
 
-static inline gboolean
-is_7bit_clean (const gchar *str)
-{
-       for (; *str != '\0'; str++) {
-               if ((*str & 0x80) != 0) {
-                       return FALSE;
-               }
-       }
-       return TRUE;
-}
-
 static void
 header_parse (GMimeParser *parser, GMimeParserOptions *options)
 {
@@ -908,12 +897,10 @@ header_parse (GMimeParser *parser, GMimeParserOptions *options)
        
        if (*inptr != ':') {
                /* ignore invalid headers */
-               if (strcmp(priv->headerbuf, "\r") != 0) {
-                       _g_mime_parser_options_warn (options, priv->header_offset, GMIME_WARN_INVALID_HEADER, 
priv->headerbuf);
-                       w(g_warning ("Invalid header at %lld: '%s'",
-                                    (long long) priv->header_offset,
-                                    priv->headerbuf));
-               }
+               _g_mime_parser_options_warn (options, priv->header_offset, GMIME_WARN_INVALID_HEADER, 
priv->headerbuf);
+               w(g_warning ("Invalid header at %lld: '%s'",
+                            (long long) priv->header_offset,
+                            priv->headerbuf));
                
                if (priv->preheader == NULL)
                        priv->preheader = g_strdup (priv->headerbuf);
@@ -942,9 +929,9 @@ header_parse (GMimeParser *parser, GMimeParserOptions *options)
        if (priv->regex && g_regex_match (priv->regex, header->name, 0, NULL))
                priv->header_cb (parser, header->name, header->raw_value,
                                 header->offset, priv->user_data);
-       if (!is_7bit_clean (header->raw_name) || !is_7bit_clean (header->raw_value)) {
+       
+       if (!g_utf8_validate (header->raw_value, -1, NULL))
                _g_mime_parser_options_warn (options, header->offset, GMIME_WARN_UNENCODED_8BIT_HEADER, 
header->name);
-       }
 }
 
 enum {