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Add support for GNU libidn

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Added new configure option:
--with-libidn - to enable IDN using GNU libidn

Renamed configure option:
--with-idn to --with-idnkit to make the option usage more clear

idnkit and libidn support can not be used at the same time.

Signed-off-by: Tomas Hozza <thozza@redhat.com>
This commit is contained in:
Tomas Hozza
2015-09-23 14:37:16 +02:00
committed by Ondřej Surý
parent 5eb05263f6
commit 2320443f63
3 changed files with 335 additions and 89 deletions
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4
bin/dig/Makefile.in
View File

@@ -41,10 +41,10 @@ DEPLIBS = ${DNSDEPLIBS} ${IRSDEPLIBS} ${BIND9DEPLIBS} \
${ISCDEPLIBS} ${ISCCFGDEPLIBS}
LIBS = ${DNSLIBS} ${IRSLIBS} ${BIND9LIBS} ${ISCCFGLIBS} \
${ISCLIBS} @IDNLIBS@ @LIBS@
${ISCLIBS} @IDNKIT_LIBS@ @LIBIDN_LIBS@ @LIBS@
NOSYMLIBS = ${DNSLIBS} ${IRSLIBS} ${BIND9LIBS} ${ISCCFGLIBS} \
${ISCNOSYMLIBS} @IDNLIBS@ @LIBS@
${ISCNOSYMLIBS} @IDNKIT_LIBS@ @LIBIDN_LIBS@ @LIBS@
SUBDIRS =

347
bin/dig/dighost.c
View File

@@ -24,18 +24,26 @@
#include <unistd.h>
#include <string.h>
#include <limits.h>
#include <errno.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#ifdef WITH_IDN
#ifdef WITH_IDN_SUPPORT
#ifdef WITH_IDNKIT
#include <idn/result.h>
#include <idn/log.h>
#include <idn/resconf.h>
#include <idn/api.h>
#endif
#ifdef WITH_LIBIDN
#include <idna.h>
#include <stringprep.h>
#endif
#endif /* WITH_IDN_SUPPORT */
#include <dns/byaddr.h>
#include <dns/fixedname.h>
#include <dns/log.h>
@@ -134,18 +142,50 @@ int lookup_counter = 0;
static char servercookie[256];
#ifdef WITH_IDN
static void initialize_idn(void);
static isc_result_t output_filter(isc_buffer_t *buffer,
unsigned int used_org,
isc_boolean_t absolute);
static idn_result_t append_textname(char *name, const char *origin,
size_t namesize);
static void idn_check_result(idn_result_t r, const char *msg);
#ifdef WITH_IDN_SUPPORT
static void idn_initialize(void);
static isc_result_t idn_locale_to_utf8(const char *from,
char *to,
size_t tolen);
static isc_result_t idn_utf8_to_ace(const char *from,
char *to,
size_t tolen);
static isc_result_t idn_ace_to_locale(const char *from,
char *to,
size_t tolen);
static isc_result_t output_filter(isc_buffer_t *buffer,
unsigned int used_org,
isc_boolean_t absolute);
static isc_result_t append_textname(char *name,
const char *origin,
size_t namesize);
#define MAXDLEN 256
int idnoptions = 0;
#define MAXDLEN 256
#ifdef WITH_IDNKIT
static isc_result_t idnkit_initialize(void);
static isc_result_t idnkit_locale_to_utf8(const char *from,
char *to,
size_t tolen);
static isc_result_t idnkit_utf8_to_ace(const char *from,
char *to,
size_t tolen);
static isc_result_t idnkit_ace_to_locale(const char *from,
char *to,
size_t tolen);
#elif WITH_LIBIDN
static isc_result_t libidn_locale_to_utf8(const char *from,
char *to,
size_t tolen);
static isc_result_t libidn_utf8_to_ace(const char *from,
char *to,
size_t tolen);
static isc_result_t libidn_ace_to_locale(const char *from,
char *to,
size_t tolen);
#endif
#endif /* WITH_IDN_SUPPORT */
isc_socket_t *keep = NULL;
isc_sockaddr_t keepaddr;
@@ -1294,8 +1334,8 @@ setup_system(isc_boolean_t ipv4only, isc_boolean_t ipv6only) {
irs_resconf_destroy(&resconf);
#ifdef WITH_IDN
initialize_idn();
#ifdef WITH_IDN_SUPPORT
idn_initialize();
#endif
if (keyfile[0] != 0)
@@ -2026,12 +2066,11 @@ setup_lookup(dig_lookup_t *lookup) {
char store[MXNAME];
char ecsbuf[20];
char cookiebuf[256];
#ifdef WITH_IDN
idn_result_t mr;
#ifdef WITH_IDN_SUPPORT
char utf8_textname[MXNAME], utf8_origin[MXNAME], idn_textname[MXNAME];
#endif
#ifdef WITH_IDN
#ifdef WITH_IDN_SUPPORT
result = dns_name_settotextfilter(lookup->idnout ?
output_filter : NULL);
check_result(result, "dns_name_settotextfilter");
@@ -2064,15 +2103,15 @@ setup_lookup(dig_lookup_t *lookup) {
isc_buffer_init(&lookup->onamebuf, lookup->oname_space,
sizeof(lookup->oname_space));
#ifdef WITH_IDN
/*
* We cannot convert `textname' and `origin' separately.
* `textname' doesn't contain TLD, but local mapping needs
* TLD.
*/
mr = idn_encodename(IDN_LOCALCONV | IDN_DELIMMAP, lookup->textname,
utf8_textname, sizeof(utf8_textname));
idn_check_result(mr, "convert textname to UTF-8");
#ifdef WITH_IDN_SUPPORT
result = idn_locale_to_utf8(lookup->textname, utf8_textname,
sizeof(utf8_textname));
check_result(result, "convert textname to UTF-8");
#endif
/*
@@ -2083,17 +2122,12 @@ setup_lookup(dig_lookup_t *lookup) {
* is TRUE or we got a domain line in the resolv.conf file.
*/
if (lookup->new_search) {
#ifdef WITH_IDN
if ((count_dots(utf8_textname) >= ndots) || !usesearch) {
lookup->origin = NULL; /* Force abs lookup */
lookup->done_as_is = ISC_TRUE;
lookup->need_search = usesearch;
} else if (lookup->origin == NULL && usesearch) {
lookup->origin = ISC_LIST_HEAD(search_list);
lookup->need_search = ISC_FALSE;
}
#ifdef WITH_IDN_SUPPORT
if ((count_dots(utf8_textname) >= ndots) || !usesearch)
#else
if ((count_dots(lookup->textname) >= ndots) || !usesearch) {
if ((count_dots(lookup->textname) >= ndots) || !usesearch)
#endif
{
lookup->origin = NULL; /* Force abs lookup */
lookup->done_as_is = ISC_TRUE;
lookup->need_search = usesearch;
@@ -2101,24 +2135,23 @@ setup_lookup(dig_lookup_t *lookup) {
lookup->origin = ISC_LIST_HEAD(search_list);
lookup->need_search = ISC_FALSE;
}
#endif
}
#ifdef WITH_IDN
#ifdef WITH_IDN_SUPPORT
if (lookup->origin != NULL) {
mr = idn_encodename(IDN_LOCALCONV | IDN_DELIMMAP,
lookup->origin->origin, utf8_origin,
sizeof(utf8_origin));
idn_check_result(mr, "convert origin to UTF-8");
mr = append_textname(utf8_textname, utf8_origin,
sizeof(utf8_textname));
idn_check_result(mr, "append origin to textname");
debug("trying origin %s", lookup->origin->origin);
result = idn_locale_to_utf8(lookup->origin->origin,
utf8_origin, sizeof(utf8_origin));
check_result(result, "convert origin to UTF-8");
result = append_textname(utf8_textname,
utf8_origin, sizeof(utf8_textname));
check_result(result, "append origin to textname");
}
mr = idn_encodename(idnoptions | IDN_LOCALMAP | IDN_NAMEPREP |
IDN_IDNCONV | IDN_LENCHECK, utf8_textname,
idn_textname, sizeof(idn_textname));
idn_check_result(mr, "convert UTF-8 textname to IDN encoding");
#else
result = idn_utf8_to_ace(utf8_textname,
idn_textname, sizeof(idn_textname));
check_result(result, "convert UTF-8 textname to IDN encoding");
#else /* WITH_IDN_SUPPORT */
if (lookup->origin != NULL) {
debug("trying origin %s", lookup->origin->origin);
result = dns_message_gettempname(lookup->sendmsg,
@@ -2181,21 +2214,17 @@ setup_lookup(dig_lookup_t *lookup) {
if (lookup->trace && lookup->trace_root)
dns_name_clone(dns_rootname, lookup->name);
else {
#ifdef WITH_IDN
#ifdef WITH_IDN_SUPPORT
len = (unsigned int) strlen(idn_textname);
isc_buffer_init(&b, idn_textname, len);
isc_buffer_add(&b, len);
result = dns_name_fromtext(lookup->name, &b,
dns_rootname, 0,
&lookup->namebuf);
#else
len = (unsigned int) strlen(lookup->textname);
isc_buffer_init(&b, lookup->textname, len);
#endif
isc_buffer_add(&b, len);
result = dns_name_fromtext(lookup->name, &b,
dns_rootname, 0,
&lookup->namebuf);
#endif
}
if (result != ISC_R_SUCCESS) {
dns_message_puttempname(lookup->sendmsg,
@@ -4153,7 +4182,7 @@ cancel_all(void) {
*/
void
destroy_libs(void) {
#ifdef WITH_IDN
#ifdef WITH_IDN_SUPPORT
isc_result_t result;
#endif
@@ -4187,7 +4216,7 @@ destroy_libs(void) {
clear_searchlist();
#ifdef WITH_IDN
#ifdef WITH_IDN_SUPPORT
result = dns_name_settotextfilter(NULL);
check_result(result, "dns_name_settotextfilter");
#endif
@@ -4234,27 +4263,55 @@ destroy_libs(void) {
isc_mem_destroy(&mctx);
}
#ifdef WITH_IDN
#ifdef WITH_IDN_SUPPORT
static void
initialize_idn(void) {
idn_result_t r;
idn_initialize(void) {
isc_result_t result;
char *idn_disable_env = NULL;
#ifdef HAVE_SETLOCALE
/* Set locale */
(void)setlocale(LC_ALL, "");
#endif
#ifdef HAVE_IDNKIT
/* Create configuration context. */
r = idn_nameinit(1);
if (r != idn_success)
fatal("idn api initialization failed: %s",
idn_result_tostring(r));
result = idnkit_initialize();
check_result(result, "idnkit initializationt");
#endif
/* Set domain name -> text post-conversion filter. */
result = dns_name_settotextfilter(output_filter);
check_result(result, "dns_name_settotextfilter");
}
static isc_result_t
idn_locale_to_utf8(const char *from, char *to, size_t tolen) {
#ifdef WITH_IDNKIT
return (idnkit_locale_to_utf8(from, to, tolen));
#elif WITH_LIBIDN
return (libidn_locale_to_utf8(from, to, tolen));
#endif
}
static isc_result_t
idn_utf8_to_ace(const char *from, char *to, size_t tolen) {
#ifdef WITH_IDNKIT
return (idnkit_utf8_to_ace(from, to, tolen));
#elif WITH_LIBIDN
return (libidn_utf8_to_ace(from, to, tolen));
#endif
}
static isc_result_t
idn_ace_to_locale(const char *from, char *to, size_t tolen) {
#ifdef WITH_IDNKIT
return (idnkit_ace_to_locale(from, to, tolen));
#elif WITH_LIBIDN
return (libidn_ace_to_locale(from, to, tolen));
#endif
}
static isc_result_t
output_filter(isc_buffer_t *buffer, unsigned int used_org,
isc_boolean_t absolute)
@@ -4262,6 +4319,7 @@ output_filter(isc_buffer_t *buffer, unsigned int used_org,
char tmp1[MAXDLEN], tmp2[MAXDLEN];
size_t fromlen, tolen;
isc_boolean_t end_with_dot;
isc_result_t result;
/*
* Copy contents of 'buffer' to 'tmp1', supply trailing dot
@@ -4270,6 +4328,7 @@ output_filter(isc_buffer_t *buffer, unsigned int used_org,
fromlen = isc_buffer_usedlength(buffer) - used_org;
if (fromlen >= MAXDLEN)
return (ISC_R_SUCCESS);
memmove(tmp1, (char *)isc_buffer_base(buffer) + used_org, fromlen);
end_with_dot = (tmp1[fromlen - 1] == '.') ? ISC_TRUE : ISC_FALSE;
if (absolute && !end_with_dot) {
@@ -4278,12 +4337,14 @@ output_filter(isc_buffer_t *buffer, unsigned int used_org,
return (ISC_R_SUCCESS);
tmp1[fromlen - 1] = '.';
}
tmp1[fromlen] = '\0';
/*
* Convert contents of 'tmp1' to local encoding.
*/
if (idn_decodename(IDN_DECODE_APP, tmp1, tmp2, MAXDLEN) != idn_success)
result = idn_ace_to_locale(tmp1, tmp2, sizeof(tmp2));
if (result != ISC_R_SUCCESS)
return (ISC_R_SUCCESS);
strlcpy(tmp1, tmp2, MAXDLEN);
@@ -4305,31 +4366,173 @@ output_filter(isc_buffer_t *buffer, unsigned int used_org,
return (ISC_R_SUCCESS);
}
static idn_result_t
static isc_result_t
append_textname(char *name, const char *origin, size_t namesize) {
size_t namelen = strlen(name);
size_t originlen = strlen(origin);
/* Already absolute? */
if (namelen > 0 && name[namelen - 1] == '.')
return (idn_success);
return (ISC_R_SUCCESS);
/* Append dot and origin */
if (namelen + 1 + originlen >= namesize)
return (idn_buffer_overflow);
if (namelen + 1 + originlen >= namesize) {
debug("append_textname failure: name + origin is too long");
return (ISC_R_FAILURE);
}
if (*origin != '.')
name[namelen++] = '.';
(void)strlcpy(name + namelen, origin, namesize - namelen);
return (idn_success);
return (ISC_R_SUCCESS);
}
static void
idn_check_result(idn_result_t r, const char *msg) {
if (r != idn_success) {
exitcode = 1;
fatal("%s: %s", msg, idn_result_tostring(r));
#ifdef WITH_IDNKIT
static isc_result_t
idnkit_initialize(void) {
idn_result_t result;
result = idn_nameinit(1);
if (result == idn_success) {
return (ISC_R_SUCCESS);
} else {
debug("idnkit api initialization failed: %s",
idn_result_tostring(result));
return (ISC_R_FAILURE);
}
}
#endif /* WITH_IDN */
static isc_result_t
idnkit_locale_to_utf8(const char *from, char *to, size_t tolen) {
idn_result_t result;
result = idn_encodename(IDN_LOCALCONV | IDN_DELIMMAP, from, to, tolen);
if (result == idn_success) {
return (ISC_R_SUCCESS);
} else {
debug("idnkit idn_encodename failed: %s",
idn_result_tostring(result));
return (ISC_R_FAILURE);
}
}
static isc_result_t
idnkit_utf8_to_ace(const char *from, char *to, size_t tolen) {
idn_result_t result;
result = idn_encodename(IDN_LOCALMAP | IDN_NAMEPREP |
IDN_IDNCONV | IDN_LENCHECK, from, to, tolen);
if (result == idn_success) {
return (ISC_R_SUCCESS);
} else {
debug("idnkit idn_encodename failed: %s",
idn_result_tostring(result));
return (ISC_R_FAILURE);
}
}
static isc_result_t
idnkit_ace_to_locale(const char *from, char *to, size_t tolen) {
idn_result_t result;
result = idn_decodename(IDN_DECODE_APP, from, to, tolen);
if (result == idn_success) {
return (ISC_R_SUCCESS);
} else {
debug("idnkit idn_decodename failed: %s",
idn_result_tostring(result) );
return (ISC_R_FAILURE);
}
}
#endif /* WITH_IDNKIT */
#ifdef WITH_LIBIDN
static isc_result_t
libidn_locale_to_utf8(const char *from, char *to, size_t tolen) {
isc_result_t result = ISC_R_FAILURE;
char *tmp_str = NULL;
tmp_str = stringprep_locale_to_utf8(from);
if (tmp_str != NULL) {
if (strlen(tmp_str) >= tolen) {
debug("UTF-8 string is too long");
result = ISC_R_FAILURE;
goto cleanup;
}
(void) strncpy(to, tmp_str, tolen);
result = ISC_R_SUCCESS;
}
cleanup:
free(tmp_str);
return (result);
}
static isc_result_t
libidn_utf8_to_ace(const char *from, char *to, size_t tolen) {
int res;
isc_result_t result;
char *tmp_str = NULL;
res = idna_to_ascii_8z(from, &tmp_str, 0);
if (res == IDNA_SUCCESS) {
/* check the length */
if (strlen(tmp_str) >= tolen) {
debug("encoded ASC string is too long");
result = ISC_R_FAILURE;
goto cleanup;
}
(void) strncpy(to, tmp_str, tolen);
result = ISC_R_SUCCESS;
} else {
debug("libidn idna_to_ascii_8z failed: %s",
idna_strerror(res));
result = ISC_R_FAILURE;
}
cleanup:
free(tmp_str);
return (result);
}
static isc_result_t
libidn_ace_to_locale(const char *from, char *to, size_t tolen) {
int res;
isc_result_t result;
char *tmp_str = NULL;
res = idna_to_unicode_8zlz(from, &tmp_str, 0);
if (res == IDNA_SUCCESS) {
/* check the length */
if (strlen(tmp_str) >= tolen) {
debug("decoded locale string is too long");
result = ISC_R_FAILURE;
goto cleanup;
}
(void) strncpy(to, tmp_str, tolen);
result = ISC_R_SUCCESS;
} else {
debug("libidn idna_to_unicode_8z8l failed: %s",
idna_strerror(res));
result = ISC_R_FAILURE;
}
cleanup:
free(tmp_str);
return (result);
}
#endif /* WITH_LIBIDN */
#endif /* WITH_IDN_SUPPORT */

73
configure.in
View File

@@ -4698,24 +4698,24 @@ NOM_PATH_FILE(XSLT_DBLATEX_STYLE, xsl/docbook.xsl, $dblatex_xsl_trees)
NOM_PATH_FILE(XSLT_DBLATEX_FASTBOOK, xsl/latex_book_fast.xsl, $dblatex_xsl_trees)
#
# IDN support
# IDN support using idnkit
#
AC_ARG_WITH(idn,
AS_HELP_STRING([--with-idn[=MPREFIX]],
AC_ARG_WITH(idnkit,
AS_HELP_STRING([--with-idn[=PREFIX]],
[enable IDN support using idnkit [default PREFIX]]),
use_idn="$withval", use_idn="no")
case "$use_idn" in
use_idnkit="$withval", use_idnkit="no")
case "$use_idnkit" in
yes)
if test X$prefix = XNONE ; then
idn_path=/usr/local
idnkit_path=/usr/local
else
idn_path=$prefix
idnkit_path=$prefix
fi
;;
no)
;;
*)
idn_path="$use_idn"
idnkit_path="$use_idnkit"
;;
esac
@@ -4761,17 +4761,60 @@ if test "yes" = "$idnlib"; then
AC_MSG_ERROR([You must specify ARG for --with-idnlib.])
fi
IDNLIBS=
if test "no" != "$use_idn"; then
AC_DEFINE(WITH_IDN, 1, [define if idnkit support is to be included.])
STD_CINCLUDES="$STD_CINCLUDES -I$idn_path/include"
IDNKIT_LIBS=
if test "no" != "$use_idnkit"; then
AC_DEFINE(WITH_IDNKIT, 1, [define if idnkit support is to be included.])
STD_CINCLUDES="$STD_CINCLUDES -I$idnkit_path/include"
if test "no" != "$idnlib"; then
IDNLIBS="$idnlib $iconvlib"
IDNKIT_LIBS="$idnlib $iconvlib"
else
IDNLIBS="-L$idn_path/lib -lidnkit $iconvlib"
IDNKIT_LIBS="-L$idnkit_path/lib -lidnkit $iconvlib"
fi
fi
AC_SUBST(IDNLIBS)
AC_SUBST(IDNKIT_LIBS)
#
# IDN support using libidn
#
AC_ARG_WITH(libidn,
[ --with-libidn[=MPREFIX] enable IDN support using GNU libidn [default PREFIX]],
use_libidn="$withval", use_libidn="no")
case "$use_libidn" in
yes)
if test X$prefix = XNONE ; then
libidn_path=/usr/local
else
libidn_path=$prefix
fi
;;
no)
;;
*)
libidn_path="$use_libidn"
;;
esac
LIBIDN_LIBS=
if test "$use_libidn" != no; then
AC_DEFINE(WITH_LIBIDN, 1, [define if libidn support is to be included.])
STD_CINCLUDES="$STD_CINCLUDES -I$libidn_path/include"
LIBIDN_LIBS="-lidn"
fi
AC_SUBST(LIBIDN_LIBS)
#
# IDN support in general
#
# check if idnkit and libidn are not used at the same time
if test "$use_idnkit" != no && test "$use_libidn" != no; then
AC_MSG_ERROR([idnkit and libidn cannot be used at the same time.])
fi
# the IDN support is on
if test "$use_idnkit" != no || test "$use_libidn" != no; then
AC_DEFINE(WITH_IDN_SUPPORT, 1, [define if IDN support is to be included.])
fi
#
# Check whether to build Automated Test Framework unit tests