X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/f3ebb786e451da973560f1c9d8cdb151d25108b5..1ddb1855402d48ad735e46abaf0d662e45600ecd:/src/src/utf8.c

diff --git a/src/src/utf8.c b/src/src/utf8.c
index 529a9a660..f035dafd0 100644
--- a/src/src/utf8.c
+++ b/src/src/utf8.c
@@ -133,7 +133,7 @@ return s;
 uschar *
 string_localpart_utf8_to_alabel(const uschar * utf8, uschar ** err)
 {
-size_t ucs4_len;
+size_t ucs4_len = 0;
 punycode_uint * p;
 size_t p_len;
 uschar * res;
@@ -142,6 +142,11 @@ int rc;
 if (!string_is_utf8(utf8)) return string_copy(utf8);
 
 p = (punycode_uint *) stringprep_utf8_to_ucs4(CCS utf8, -1, &ucs4_len);
+if (!p || !ucs4_len)
+  {
+  if (err) *err = US"l_u2a: bad UTF-8 input";
+  return NULL;
+  }
 p_len = ucs4_len*4;	/* this multiplier is pure guesswork */
 res = store_get(p_len+5, is_tainted(utf8));
 
@@ -240,28 +245,29 @@ return l;
 
 /* See a description in tls-openssl.c for an explanation of why this exists.
 
-Arguments:   a FILE* to print the results to
-Returns:     nothing
+Arguments:   string to append to
+Returns:     string
 */
 
-void
-utf8_version_report(FILE *f)
+gstring *
+utf8_version_report(gstring * g)
 {
 #ifdef SUPPORT_I18N_2008
-fprintf(f, "Library version: IDN2: Compile: %s\n"
+g = string_fmt_append(g, "Library version: IDN2: Compile: %s\n"
            "                       Runtime: %s\n",
 	IDN2_VERSION,
 	idn2_check_version(NULL));
-fprintf(f, "Library version: Stringprep: Compile: %s\n"
+g = string_fmt_append(g, "Library version: Stringprep: Compile: %s\n"
            "                             Runtime: %s\n",
 	STRINGPREP_VERSION,
 	stringprep_check_version(NULL));
 #else
-fprintf(f, "Library version: IDN: Compile: %s\n"
+g = string_fmt_append(g, "Library version: IDN: Compile: %s\n"
            "                      Runtime: %s\n",
 	STRINGPREP_VERSION,
 	stringprep_check_version(NULL));
 #endif
+return g;
 }
 
 #endif	/* whole file */