bind-9.2.2-patch

非常好的dns解析软件

+ 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);
+ 
+ #define MAXDLEN               256
+ #endif
+ 
  /*
   * Apply and clear locks at the event level in global task.
   * Can I get rid of these using shutdown events?  XXX
***************
*** 648,653 ****
--- 671,680 ----
  		ISC_LIST_APPEND(server_list, srv, link);
  	}
  
+ #ifdef WITH_IDN
+ 	initialize_idn();
+ #endif
+ 
  	if (keyfile[0] != 0)
  		setup_file_key();
  	else if (keysecret[0] != 0)
***************
*** 1168,1173 ****
--- 1195,1208 ----
  	isc_buffer_t b;
  	dns_compress_t cctx;
  	char store[MXNAME];
+ #ifdef WITH_IDN
+ 	idn_result_t mr;
+ 	char utf8_textname[MXNAME], utf8_origin[MXNAME], idn_textname[MXNAME];
+ #endif
+ 
+ #ifdef WITH_IDN
+ 	dns_name_settotextfilter(output_filter);
+ #endif
  
  	REQUIRE(lookup != NULL);
  	INSIST(!free_now);
***************
*** 1196,1201 ****
--- 1231,1247 ----
  	isc_buffer_init(&lookup->onamebuf, lookup->onamespace,
  			sizeof(lookup->onamespace));
  
+ #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");
+ #endif
+ 
  	/*
  	 * If the name has too many dots, force the origin to be NULL
  	 * (which produces an absolute lookup).  Otherwise, take the origin
***************
*** 1204,1215 ****
--- 1250,1290 ----
  	 * is TRUE or we got a domain line in the resolv.conf file.
  	 */
  	/* XXX New search here? */
+ #ifdef WITH_IDN
+ 	if ((count_dots(utf8_textname) >= ndots) || !usesearch)
+ 		lookup->origin = NULL; /* Force abs lookup */
+ 	else if (lookup->origin == NULL && lookup->new_search && usesearch) {
+ 		lookup->origin = ISC_LIST_HEAD(search_list);
+ 	}
+ #else
  	if ((count_dots(lookup->textname) >= ndots) || !usesearch)
  		lookup->origin = NULL; /* Force abs lookup */
  	else if (lookup->origin == NULL && lookup->new_search && usesearch) {
  		lookup->origin = ISC_LIST_HEAD(search_list);
  	}
+ #endif
+ 
+ #ifdef WITH_IDN
  	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");
+ 	}
+ 	mr = idn_encodename(IDN_LOCALMAP | IDN_NAMEPREP | IDN_ASCCHECK |
+ 			    IDN_IDNCONV | IDN_LENCHECK, utf8_textname,
+ 			    idn_textname, sizeof(idn_textname));
+ 	idn_check_result(mr, "convert UTF-8 textname to IDN encoding");
+ #endif
+ 
+ #ifdef WITH_IDN
+ 	if (0) {
+ #else
+ 	if (lookup->origin != NULL) {
+ #endif
  		debug("trying origin %s", lookup->origin->origin);
  		result = dns_message_gettempname(lookup->sendmsg,
  						 &lookup->oname);
***************
*** 1254,1259 ****
--- 1329,1343 ----
  		if (lookup->trace && lookup->trace_root)
  			dns_name_clone(dns_rootname, lookup->name);
  		else {
+ #ifdef WITH_IDN
+ 			len = strlen(idn_textname);
+ 			isc_buffer_init(&b, idn_textname, len);
+ 			isc_buffer_add(&b, len);
+ 			result = dns_name_fromtext(lookup->name, &b,
+ 						   dns_rootname,
+ 						   ISC_FALSE,
+ 						   &lookup->namebuf);
+ #else
  			len = strlen(lookup->textname);
  			isc_buffer_init(&b, lookup->textname, len);
  			isc_buffer_add(&b, len);
***************
*** 1261,1266 ****
--- 1345,1351 ----
  						   dns_rootname,
  						   ISC_FALSE,
  						   &lookup->namebuf);
+ #endif
  		}
  		if (result != ISC_R_SUCCESS) {
  			dns_message_puttempname(lookup->sendmsg,
***************
*** 2663,2665 ****
--- 2748,2848 ----
  	if (mctx != NULL)
  		isc_mem_destroy(&mctx);
  }
+ 
+ #ifdef WITH_IDN
+ static void
+ initialize_idn(void) {
+ 	idn_result_t r;
+ 
+ #ifdef HAVE_SETLOCALE
+ 	/* Set locale */
+ 	(void)setlocale(LC_ALL, "");
+ #endif
+ 	/* Create configuration context. */
+ 	r = idn_nameinit(1);
+ 	if (r != idn_success)
+ 		fatal("idn api initialization failed: %s",
+ 		      idn_result_tostring(r));
+ 
+ 	/* Set domain name -> text post-conversion filter. */
+ 	dns_name_settotextfilter(output_filter);
+ }
+ 
+ static isc_result_t
+ output_filter(isc_buffer_t *buffer, unsigned int used_org,
+ 	      isc_boolean_t absolute)
+ {
+ 	char tmp1[MAXDLEN], tmp2[MAXDLEN];
+ 	size_t fromlen, tolen;
+ 	isc_boolean_t end_with_dot;
+ 
+ 	/*
+ 	 * Copy contents of 'buffer' to 'tmp1', supply trailing dot
+ 	 * if 'absolute' is true, and terminate with NUL.
+ 	 */
+ 	fromlen = isc_buffer_usedlength(buffer) - used_org;
+ 	if (fromlen >= MAXDLEN)
+ 		return (ISC_R_SUCCESS);
+ 	memcpy(tmp1, (char *)isc_buffer_base(buffer) + used_org, fromlen);
+ 	end_with_dot = (tmp1[fromlen - 1] == '.') ? ISC_TRUE : ISC_FALSE;
+ 	if (absolute && !end_with_dot) {
+ 		fromlen++;
+ 		if (fromlen >= MAXDLEN)
+ 			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)
+ 		return (ISC_R_SUCCESS);
+ 	strcpy(tmp1, tmp2);
+ 
+ 	/*
+ 	 * 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--;
+ 
+ 	if (isc_buffer_length(buffer) < used_org + tolen)
+ 		return (ISC_R_NOSPACE);
+ 
+ 	isc_buffer_subtract(buffer, isc_buffer_usedlength(buffer) - used_org);
+ 	memcpy(isc_buffer_used(buffer), tmp1, tolen);
+ 	isc_buffer_add(buffer, tolen);
+ 
+ 	return (ISC_R_SUCCESS);
+ }
+ 
+ static idn_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;
+ 
+ 	/* Append dot and origin */
+ 
+ 	if (namelen + 1 + originlen >= namesize)
+ 		return idn_buffer_overflow;
+ 
+ 	name[namelen++] = '.';
+ 	(void)strcpy(name + namelen, origin);
+ 	return idn_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));
+ 	}
+ }
+ 
+ #endif /* WITH_IDN */
Index: bin/dig/host.1
diff -c mdn/othersrc/bind9/bin/dig/host.1:1.1.1.2 mdn/othersrc/bind9/bin/dig/host.1:1.4
*** bin/dig/host.1	Wed Mar  5 17:14:57 2003
--- bin/dig/host.1	Wed Mar  5 17:42:53 2003
***************
*** 120,125 ****
--- 120,136 ----
  effectively wait forever for a reply. The time to wait for a response
  will be set to the number of seconds given by the hardware's maximum
  value for an integer quantity.
+ .SH "IDN SUPPORT"
+ .PP
+ If \fBhost\fR has been built with IDN (internationalized
+ domain name) support, it can accept and display non-ASCII domain names.
+ \fBhost\fR appropriately converts character encoding of
+ domain name before sending a request to DNS server or displaying a
+ reply from the server.
+ If you'd like to turn off the IDN support for some reason, defines
+ the \fBIDN_DISABLE\fR environment variable.
+ The IDN support is disabled if the the variable is set when
+ \fBhost\fR runs.
  .SH "FILES"
  .PP
  \fI/etc/resolv.conf\fR
Index: bin/dig/host.docbook
diff -c mdn/othersrc/bind9/bin/dig/host.docbook:1.1.1.2 mdn/othersrc/bind9/bin/dig/host.docbook:1.4
*** bin/dig/host.docbook	Wed Mar  5 17:14:57 2003
--- bin/dig/host.docbook	Wed Mar  5 17:42:53 2003
***************
*** 181,186 ****
--- 181,201 ----
  </refsect1>
  
  <refsect1>
+ <title>IDN SUPPORT</title>
+ <para>
+ If <command>host</command> has been built with IDN (internationalized
+ domain name) support, it can accept and display non-ASCII domain names.
+ <command>host</command> appropriately converts character encoding of
+ domain name before sending a request to DNS server or displaying a
+ reply from the server.
+ If you'd like to turn off the IDN support for some reason, defines
+ the <envar>IDN_DISABLE</envar> environment variable.
+ The IDN support is disabled if the the variable is set when
+ <command>host</command> runs.
+ </para>
+ </refsect1>
+ 
+ <refsect1>
  <title>FILES</title>
  <para>
  <filename>/etc/resolv.conf</filename>
Index: lib/dns/name.c
diff -c mdn/othersrc/bind9/lib/dns/name.c:1.1.1.11 mdn/othersrc/bind9/lib/dns/name.c:1.15
*** lib/dns/name.c	Wed Mar  5 17:16:22 2003
--- lib/dns/name.c	Wed Mar  5 17:49:58 2003
***************
*** 194,199 ****
--- 194,206 ----
  /* XXXDCL make const? */
  dns_name_t *dns_wildcardname = &wild;
  
+ #ifdef WITH_IDN
+ /*
+  * dns_name_t to text post-conversion procedure.
+  */
+ static dns_name_totextfilter_t totext_filter_proc = NULL;
+ #endif
+ 
  static void
  set_offsets(const dns_name_t *name, unsigned char *offsets,
  	    dns_name_t *set_name);
***************
*** 1684,1689 ****
--- 1691,1699 ----
  	unsigned int labels;
  	isc_boolean_t saw_root = ISC_FALSE;
  	char num[4];
+ #ifdef WITH_IDN
+ 	unsigned int oused = target->used;
+ #endif
  
  	/*
  	 * This function assumes the name is in proper uncompressed
***************
*** 1861,1866 ****
--- 1871,1880 ----
  
  	isc_buffer_add(target, tlen - trem);
  
+ #ifdef WITH_IDN
+ 	if (totext_filter_proc != NULL)
+ 		return ((*totext_filter_proc)(target, oused, saw_root));
+ #endif
  	return (ISC_R_SUCCESS);
  }
  
***************
*** 3325,3327 ****
--- 3339,3347 ----
  	return (ISC_R_SUCCESS);
  }
  
+ #ifdef WITH_IDN
+ void
+ dns_name_settotextfilter(dns_name_totextfilter_t proc) {
+ 	totext_filter_proc = proc;
+ }
+ #endif
Index: lib/dns/include/dns/name.h
diff -c mdn/othersrc/bind9/lib/dns/include/dns/name.h:1.1.1.7 mdn/othersrc/bind9/lib/dns/include/dns/name.h:1.10
*** lib/dns/include/dns/name.h	Wed May 22 17:15:29 2002
--- lib/dns/include/dns/name.h	Mon May 27 12:10:15 2002
***************
*** 219,224 ****
--- 219,235 ----
   */
  #define DNS_NAME_MAXWIRE 255
  
+ #ifdef WITH_IDN
+ /*
+  * Text output filter procedure.
+  * 'target' is the buffer to be converted.  The region to be converted
+  * is from 'buffer'->base + 'used_org' to the end of the used region.
+  */
+ typedef isc_result_t (*dns_name_totextfilter_t)(isc_buffer_t *target,
+ 						unsigned int used_org,
+ 						isc_boolean_t absolute);
+ #endif
+ 
  /***
   *** Initialization
   ***/
***************
*** 1244,1249 ****
--- 1255,1268 ----
   *	'size' > 0.
   *
   */
+ 
+ #ifdef WITH_IDN
+ void
+ dns_name_settotextfilter(dns_name_totextfilter_t proc);
+ /*
+  * Call 'proc' at the end of dns_name_totext.
+  */
+ #endif /* WITH_IDN */
  
  #define DNS_NAME_FORMATSIZE (DNS_NAME_MAXTEXT + 1)
  /*