Copyright year updates (things touched in 2016)

[exim.git] / src / src / utf8.c

diff --git a/src/src/utf8.c b/src/src/utf8.c
index 2f8173dc1ad219d1d07e51e6fb6f69450c5ee9b3..84ad1dc18f5744ecb8841df1f354726e57888704 100644 (file)
--- a/src/src/utf8.c
+++ b/src/src/utf8.c
@@ -8,7 +8,7 @@
 
 #include "exim.h"
 
-#ifdef EXPERIMENTAL_INTERNATIONAL
+#ifdef SUPPORT_I18N
 
 #include <idna.h>
 #include <punycode.h>
@@ -24,6 +24,7 @@ return FALSE;
 
 /**************************************************/
 /* Domain conversions */
+/* the *err string pointer should be null before the call */
 
 uschar *
 string_domain_utf8_to_alabel(const uschar * utf8, uschar ** err)
@@ -33,7 +34,7 @@ uschar * s;
 int rc;
 
 s = US stringprep_utf8_nfkc_normalize(CCS utf8, -1);
-if (  (rc = idna_to_ascii_8z(CCS s, CSS &s1, IDNA_USE_STD3_ASCII_RULES))
+if (  (rc = idna_to_ascii_8z(CCS s, CSS &s1, IDNA_ALLOW_UNASSIGNED))
    != IDNA_SUCCESS)
   {
   free(s);
@@ -54,6 +55,7 @@ string_domain_alabel_to_utf8(const uschar * alabel, uschar ** err)
 uschar * s1;
 uschar * s;
 int rc;
+
 if (  (rc = idna_to_unicode_8z8z(CCS alabel, CSS &s1, IDNA_USE_STD3_ASCII_RULES))
    != IDNA_SUCCESS)
   {
@@ -67,25 +69,34 @@ return s;
 
 /**************************************************/
 /* localpart conversions */
+/* the *err string pointer should be null before the call */
 
 
 uschar *
 string_localpart_utf8_to_alabel(const uschar * utf8, uschar ** err)
 {
 size_t ucs4_len;
-punycode_uint * p = (punycode_uint *) stringprep_utf8_to_ucs4(CCS utf8, -1, &ucs4_len);
-size_t p_len = ucs4_len*4;     /* this multiplier is pure guesswork */
-uschar * res = store_get(p_len+5);
+punycode_uint * p;
+size_t p_len;
+uschar * res;
 int rc;
 
+if (!string_is_utf8(utf8)) return string_copy(utf8);
+
+p = (punycode_uint *) stringprep_utf8_to_ucs4(CCS utf8, -1, &ucs4_len);
+p_len = ucs4_len*4;    /* this multiplier is pure guesswork */
+res = store_get(p_len+5);
+
 res[0] = 'x'; res[1] = 'n'; res[2] = res[3] = '-';
 
-if ((rc = punycode_encode(ucs4_len, p, NULL, &p_len, res+4)) != PUNYCODE_SUCCESS)
+if ((rc = punycode_encode(ucs4_len, p, NULL, &p_len, CS res+4)) != PUNYCODE_SUCCESS)
   {
+  DEBUG(D_expand) debug_printf("l_u2a: bad '%s'\n", punycode_strerror(rc));
   free(p);
   if (err) *err = US punycode_strerror(rc);
   return NULL;
   }
+p_len += 4;
 free(p);
 res[p_len] = '\0';
 return res;
@@ -95,8 +106,10 @@ return res;
 uschar *
 string_localpart_alabel_to_utf8(const uschar * alabel, uschar ** err)
 {
-size_t p_len = strlen(alabel);
+size_t p_len = Ustrlen(alabel);
 punycode_uint * p;
+uschar * s;
+uschar * res;
 int rc;
 
 if (alabel[0] != 'x' || alabel[1] != 'n' || alabel[2] != '-' || alabel[3] != '-')
@@ -104,8 +117,8 @@ if (alabel[0] != 'x' || alabel[1] != 'n' || alabel[2] != '-' || alabel[3] != '-'
   if (err) *err = US"bad alabel prefix";
   return NULL;
   }
-p_len -= 4;
 
+p_len -= 4;
 p = (punycode_uint *) store_get((p_len+1) * sizeof(*p));
 
 if ((rc = punycode_decode(p_len, CCS alabel+4, &p_len, p, NULL)) != PUNYCODE_SUCCESS)
@@ -113,11 +126,68 @@ if ((rc = punycode_decode(p_len, CCS alabel+4, &p_len, p, NULL)) != PUNYCODE_SUC
   if (err) *err = US punycode_strerror(rc);
   return NULL;
   }
-p[p_len] = 0;
-return US p;
+
+s = US stringprep_ucs4_to_utf8(p, p_len, NULL, &p_len);
+res = string_copyn(s, p_len);
+free(s);
+return res;
 }
 
 
+/**************************************************/
+/* whole address conversion */
+/* the *err string pointer should be null before the call */
+
+uschar *
+string_address_utf8_to_alabel(const uschar * utf8, uschar ** err)
+{
+const uschar * s;
+uschar * l;
+uschar * d;
+
+if (!*utf8) return string_copy(utf8);
+
+DEBUG(D_expand) debug_printf("addr from utf8 <%s>", utf8);
+
+for (s = utf8; *s; s++)
+  if (*s == '@')
+    {
+    l = string_copyn(utf8, s - utf8);
+    if (  (l = string_localpart_utf8_to_alabel(l, err), err && *err)
+       || (d = string_domain_utf8_to_alabel(++s, err),  err && *err)
+       )
+      return NULL;
+    l = string_sprintf("%s@%s", l, d);
+    DEBUG(D_expand) debug_printf(" -> <%s>\n", l);
+    return l;
+    }
+
+l =  string_localpart_utf8_to_alabel(utf8, err);
+DEBUG(D_expand) debug_printf(" -> <%s>\n", l);
+return l;
+}
+
+
+
+/*************************************************
+*         Report the library versions.           *
+*************************************************/
+
+/* See a description in tls-openssl.c for an explanation of why this exists.
+
+Arguments:   a FILE* to print the results to
+Returns:     nothing
+*/
+
+void
+utf8_version_report(FILE *f)
+{
+fprintf(f, "Library version: IDN: Compile: %s\n"
+           "                      Runtime: %s\n",
+       STRINGPREP_VERSION,
+       stringprep_check_version(NULL));
+}
+
 #endif /* whole file */
 
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