ComputerSurge/bind9
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Don't use the IDN traslated name if no conversion took a place

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(cherry picked from commit 08f66d8509)
This commit is contained in:
Ondřej Surý
2018-03-19 16:09:04 +00:00
parent 4dd54a688c
commit db7231e4ab
1 changed files with 30 additions and 19 deletions
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49
bin/dig/dighost.c
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@@ -2422,8 +2422,7 @@ setup_lookup(dig_lookup_t *lookup) {
textname = lookup->textname;
#ifdef WITH_IDN_SUPPORT
if (lookup->idnin) {
result = idn_locale_to_ace(lookup->textname, idn_textname,
sizeof(idn_textname));
result = idn_locale_to_ace(textname, idn_textname, sizeof(idn_textname));
check_result(result, "convert textname to IDN encoding");
debug("idn_textname: %s", idn_textname);
textname = idn_textname;
@@ -2459,8 +2458,7 @@ setup_lookup(dig_lookup_t *lookup) {
origin = lookup->origin->origin;
#ifdef WITH_IDN_SUPPORT
if (lookup->idnin) {
result = idn_locale_to_ace(lookup->origin->origin,
idn_origin, sizeof(idn_origin));
result = idn_locale_to_ace(origin, idn_origin, sizeof(idn_origin));
check_result(result, "convert origin to IDN encoding");
debug("trying idn origin %s", idn_origin);
origin = idn_origin;
@@ -4680,21 +4678,19 @@ output_filter(isc_buffer_t *buffer, unsigned int used_org,
if (result != ISC_R_SUCCESS) {
return (ISC_R_SUCCESS);
}
strlcpy(tmp1, tmp2, MAXDLEN);
/*
* Copy the converted contents in 'tmp1' back to 'buffer'.
* If we have appended trailing dot, remove it.
*/
tolen = strlen(tmp1);
if (absolute && !end_with_dot && tmp1[tolen - 1] == '.')
tolen = strlen(tmp2);
if (absolute && !end_with_dot && tmp2[tolen - 1] == '.')
tolen--;
if (isc_buffer_length(buffer) < used_org + tolen)
return (ISC_R_NOSPACE);
isc_buffer_subtract(buffer, isc_buffer_usedlength(buffer) - used_org);
memmove(isc_buffer_used(buffer), tmp1, tolen);
memmove(isc_buffer_used(buffer), tmp2, tolen);
isc_buffer_add(buffer, (unsigned int)tolen);
return (ISC_R_SUCCESS);
@@ -4760,11 +4756,28 @@ idn_locale_to_ace(const char *from, char *to, size_t tolen) {
int res;
char *tmp_str = NULL;
res = idn2_lookup_ul(from, &tmp_str, IDN2_NONTRANSITIONAL);
if (res == IDN2_DISALLOWED)
res = idn2_lookup_ul(from, &tmp_str, IDN2_TRANSITIONAL);
res = idn2_to_ascii_lz(from, &tmp_str, IDN2_NONTRANSITIONAL|IDN2_NFC_INPUT);
if (res == IDN2_DISALLOWED) {
res = idn2_to_ascii_lz(from, &tmp_str, IDN2_TRANSITIONAL|IDN2_NFC_INPUT);
}
if (res == IDN2_OK) {
/*
* idn2_to_ascii_lz() normalizes all strings to lowerl case,
* but we generally don't want to lowercase all input strings;
* make sure to return the original case if the two strings
* differ only in case
*/
if (!strcasecmp(from, tmp_str)) {
if (strlen(from) >= tolen) {
debug("from string is too long");
idn2_free(tmp_str);
return ISC_R_NOSPACE;
}
idn2_free(tmp_str);
(void) strlcpy(to, from, tolen);
return ISC_R_SUCCESS;
}
/* check the length */
if (strlen(tmp_str) >= tolen) {
debug("ACE string is too long");
@@ -4777,7 +4790,7 @@ idn_locale_to_ace(const char *from, char *to, size_t tolen) {
return ISC_R_SUCCESS;
}
fatal("idn2_lookup_ul failed: %s", idn2_strerror(res));
fatal("'%s' is not a legal IDN name (%s), use +noidnin", from, idn2_strerror(res));
return ISC_R_FAILURE;
}
@@ -4788,7 +4801,7 @@ idn_ace_to_locale(const char *from, char *to, size_t tolen) {
char *tmp_str = NULL;
res = idn2_to_unicode_8zlz(from, &tmp_str,
IDN2_NONTRANSITIONAL|IDN2_NFC_INPUT);
IDN2_NONTRANSITIONAL|IDN2_NFC_INPUT);
if (res == IDN2_OK) {
/* check the length */
@@ -4798,14 +4811,12 @@ idn_ace_to_locale(const char *from, char *to, size_t tolen) {
return ISC_R_FAILURE;
}
(void) strncpy(to, tmp_str, tolen);
free(tmp_str);
(void) strlcpy(to, tmp_str, tolen);
idn2_free(tmp_str);
return ISC_R_SUCCESS;
} else {
debug("idn2_to_unicode_8zlz failed: %s",
idn2_strerror(res));
}
fatal("'%s' is not a legal IDN name (%s), use +noidnout", from, idn2_strerror(res));
return ISC_R_FAILURE;
}
#endif /* WITH_IDN_OUT_SUPPORT */