/* Copyright (c) 2007-11, WebThing Ltd
* Copyright (c) 2011-, The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#if defined(WIN32)
#define XML2ENC_DECLARE_EXPORT
#endif
#include <ctype.h>
/* libxml2 */
#include <libxml/encoding.h>
#include "http_protocol.h"
#include "http_config.h"
#include "http_log.h"
#include "apr_strings.h"
#include "apr_xlate.h"
#include "apr_optional.h"
#include "mod_xml2enc.h"
module AP_MODULE_DECLARE_DATA xml2enc_module;
#define BUFLEN 8192
#define BUF_MIN 4096
#define APR_BRIGADE_DO(b,bb) for (b = APR_BRIGADE_FIRST(bb); \
b != APR_BRIGADE_SENTINEL(bb); \
b = APR_BUCKET_NEXT(b))
#define ENC_INITIALISED 0x100
#define ENC_SEEN_EOS 0x200
#define ENC_SKIPTO ENCIO_SKIPTO
#define HAVE_ENCODING(enc) \
(((enc)!=XML_CHAR_ENCODING_NONE)&&((enc)!=XML_CHAR_ENCODING_ERROR))
/*
* XXX: Check all those ap_assert()s ans replace those that should not happen
* XXX: with AP_DEBUG_ASSERT and those that may happen with proper error
* XXX: handling.
*/
typedef struct {
xmlCharEncoding xml2enc;
char* buf;
apr_size_t bytes;
apr_xlate_t* convset;
unsigned int flags;
apr_off_t bblen;
apr_bucket_brigade* bbnext;
apr_bucket_brigade* bbsave;
const char* encoding;
} xml2ctx;
typedef struct {
const char* default_charset;
xmlCharEncoding default_encoding;
apr_array_header_t* skipto;
} xml2cfg;
typedef struct {
const char* val;
} tattr;
static ap_regex_t* seek_meta_ctype;
static ap_regex_t* seek_charset;
static apr_status_t xml2enc_filter(request_rec* r, const char* enc,
unsigned int mode)
{
/* set up a ready-initialised ctx to convert to enc, and insert filter */
apr_xlate_t* convset;
apr_status_t rv;
unsigned int flags = (mode ^ ENCIO);
if ((mode & ENCIO) == ENCIO_OUTPUT) {
rv = apr_xlate_open(&convset, enc, "UTF-8", r->pool);
flags |= ENC_INITIALISED;
}
else if ((mode & ENCIO) == ENCIO_INPUT) {
rv = apr_xlate_open(&convset, "UTF-8", enc, r->pool);
flags |= ENC_INITIALISED;
}
else if ((mode & ENCIO) == ENCIO_INPUT_CHECKS) {
convset = NULL;
rv = APR_SUCCESS; /* we'll initialise later by sniffing */
}
else {
rv = APR_EGENERAL;
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01426)
"xml2enc: bad mode %x", mode);
}
if (rv == APR_SUCCESS) {
xml2ctx* ctx = apr_pcalloc(r->pool, sizeof(xml2ctx));
ctx->flags = flags;
if (flags & ENC_INITIALISED) {
ctx->convset = convset;
ctx->bblen = BUFLEN;
ctx->buf = apr_palloc(r->pool, (apr_size_t)ctx->bblen);
}
ap_add_output_filter("xml2enc", ctx, r, r->connection);
}
else {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(01427)
"xml2enc: Charset %s not supported.", enc) ;
}
return rv;
}
/* This needs to operate only when we're using htmlParser */
/* Different modules may apply different rules here. Ho, hum. */
static void fix_skipto(request_rec* r, xml2ctx* ctx)
{
apr_status_t rv;
xml2cfg* cfg = ap_get_module_config(r->per_dir_config, &xml2enc_module);
if ((cfg->skipto != NULL) && (ctx->flags & ENC_SKIPTO)) {
int found = 0;
char* p = ap_strchr(ctx->buf, '<');
tattr* starts = (tattr*) cfg->skipto->elts;
while (!found && p && *p) {
int i;
for (i = 0; i < cfg->skipto->nelts; ++i) {
if (!strncasecmp(p+1, starts[i].val, strlen(starts[i].val))) {
/* found a starting element. Strip all that comes before. */
apr_bucket* b;
apr_bucket* bstart;
rv = apr_brigade_partition(ctx->bbsave, (p-ctx->buf),
&bstart);
ap_assert(rv == APR_SUCCESS);
while (b = APR_BRIGADE_FIRST(ctx->bbsave), b != bstart) {
apr_bucket_delete(b);
}
ctx->bytes -= (p-ctx->buf);
ctx->buf = p ;
found = 1;
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01428)
"Skipped to first <%s> element",
starts[i].val) ;
break;
}
}
p = ap_strchr(p+1, '<');
}
if (p == NULL) {
ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01429)
"Failed to find start of recognised HTML!");
}
}
}
static void sniff_encoding(request_rec* r, xml2ctx* ctx)
{
xml2cfg* cfg = NULL; /* initialise to shut compiler warnings up */
char* p ;
apr_bucket* cutb;
apr_bucket* cute;
apr_bucket* b;
ap_regmatch_t match[2] ;
apr_status_t rv;
const char* ctype = r->content_type;
if (ctype) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01430)
"Content-Type is %s", ctype) ;
/* If we've got it in the HTTP headers, there's nothing to do */
if (ctype && (p = ap_strcasestr(ctype, "charset=") , p != NULL)) {
p += 8 ;
if (ctx->encoding = apr_pstrndup(r->pool, p, strcspn(p, " ;") ),
ctx->encoding) {
ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(01431)
"Got charset %s from HTTP headers", ctx->encoding) ;
ctx->xml2enc = xmlParseCharEncoding(ctx->encoding);
}
}
}
/* to sniff, first we look for BOM */
if (ctx->xml2enc == XML_CHAR_ENCODING_NONE) {
ctx->xml2enc = xmlDetectCharEncoding((const xmlChar*)ctx->buf,
ctx->bytes);
if (HAVE_ENCODING(ctx->xml2enc)) {
ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(01432)
"Got charset from XML rules.") ;
ctx->encoding = xmlGetCharEncodingName(ctx->xml2enc);
}
}
/* If none of the above, look for a META-thingey */
/* also we're probably about to invalidate it, so we remove it. */
if (ap_regexec(seek_meta_ctype, ctx->buf, 1, match, 0) == 0 ) {
/* get markers on the start and end of the match */
rv = apr_brigade_partition(ctx->bbsave, match[0].rm_eo, &cute);
ap_assert(rv == APR_SUCCESS);
rv = apr_brigade_partition(ctx->bbsave, match[0].rm_so, &cutb);
ap_assert(rv == APR_SUCCESS);
/* now set length of useful buf for start-of-data hooks */
ctx->bytes = match[0].rm_so;
if (ctx->encoding == NULL) {
p = apr_pstrndup(r->pool, ctx->buf + match[0].rm_so,
match[0].rm_eo - match[0].rm_so) ;
if (ap_regexec(seek_charset, p, 2, match, 0) == 0) {
if (ctx->encoding = apr_pstrndup(r->pool, p+match[1].rm_so,
match[1].rm_eo - match[1].rm_so),
ctx->encoding) {
ctx->xml2enc = xmlParseCharEncoding(ctx->encoding);
if (HAVE_ENCODING(ctx->xml2enc))
ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(01433)
"Got charset %s from HTML META", ctx->encoding) ;
}
}
}
/* cut out the <meta> we're invalidating */
while (cutb != cute) {
b = APR_BUCKET_NEXT(cutb);
apr_bucket_delete(cutb);
cutb = b;
}
/* and leave a string */
ctx->buf[ctx->bytes] = 0;
}
/* either it's set to something we found or it's still the default */
/* Aaargh! libxml2 has undocumented <META-crap> support. So this fails
* if metafix is not active. Have to make it conditional.
*
* No, that means no-metafix breaks things. Deal immediately with
* this particular instance of metafix.
*/
if (!HAVE_ENCODING(ctx->xml2enc)) {
cfg = ap_get_module_config(r->per_dir_config, &xml2enc_module);
if (!ctx->encoding) {
ctx->encoding = cfg->default_charset?cfg->default_charset:"ISO-8859-1";
}
/* Unsupported charset. Can we get (iconv) support through apr_xlate? */
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(01434)
"Charset %s not supported by libxml2; trying apr_xlate",
ctx->encoding);
if (apr_xlate_open(&ctx->convset, "UTF-8", ctx->encoding, r->pool)
== APR_SUCCESS) {
ctx->xml2enc = XML_CHAR_ENCODING_UTF8 ;
} else {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01435)
"Charset %s not supported. Consider aliasing it?",
ctx->encoding) ;
}
}
if (!HAVE_ENCODING(ctx->xml2enc)) {
/* Use configuration default as a last resort */
ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(01436)
"No usable charset information; using configuration default");
ctx->xml2enc = (cfg->default_encoding == XML_CHAR_ENCODING_NONE)
? XML_CHAR_ENCODING_8859_1 : cfg->default_encoding ;
}
if (ctype && ctx->encoding) {
if (ap_regexec(seek_charset, ctype, 2, match, 0)) {
r->content_type = apr_pstrcat(r->pool, ctype, ";charset=utf-8",
NULL);
} else {
char* str = apr_palloc(r->pool, strlen(r->content_type) + 13
- (match[0].rm_eo - match[0].rm_so) + 1);
memcpy(str, r->content_type, match[1].rm_so);
memcpy(str + match[1].rm_so, "utf-8", 5);
strcpy(str + match[1].rm_so + 5, r->content_type+match[1].rm_eo);
r->content_type = str;
}
}
}
static apr_status_t xml2enc_filter_init(ap_filter_t* f)
{
xml2ctx* ctx;
if (!f->ctx) {
xml2cfg* cfg = ap_get_module_config(f->r->per_dir_config,
&xml2enc_module);
f->ctx = ctx = apr_pcalloc(f->r->pool, sizeof(xml2ctx));
ctx->xml2enc = XML_CHAR_ENCODING_NONE;
if (cfg->skipto != NULL) {
ctx->flags |= ENC_SKIPTO;
}
}
return APR_SUCCESS;
}
static apr_status_t xml2enc_ffunc(ap_filter_t* f, apr_bucket_brigade* bb)
{
xml2ctx* ctx = f->ctx;
apr_status_t rv;
apr_bucket* b;
apr_bucket* bstart;
apr_size_t insz = 0;
int pending_meta = 0;
char *ctype;
char *p;
if (!ctx || !f->r->content_type) {
/* log error about configuring this */
ap_remove_output_filter(f);
return ap_pass_brigade(f->next, bb) ;
}
ctype = apr_pstrdup(f->r->pool, f->r->content_type);
for (p = ctype; *p; ++p)
if (isupper(*p))
*p = tolower(*p);
/* only act if starts-with "text/" or contains "xml" */
if (strncmp(ctype, "text/", 5) && !strstr(ctype, "xml")) {
ap_remove_output_filter(f);
return ap_pass_brigade(f->next, bb) ;
}
if (ctx->bbsave == NULL) {
ctx->bbsave = apr_brigade_create(f->r->pool,
f->r->connection->bucket_alloc);
}
/* append to any data left over from last time */
APR_BRIGADE_CONCAT(ctx->bbsave, bb);
if (!(ctx->flags & ENC_INITIALISED)) {
/* some kind of initialisation required */
/* Turn all this off when post-processing */
/* if we don't have enough data to sniff but more's to come, wait */
apr_brigade_length(ctx->bbsave, 0, &ctx->bblen);
if ((ctx->bblen < BUF_MIN) && (ctx->bblen != -1)) {
APR_BRIGADE_DO(b, ctx->bbsave) {
if (APR_BUCKET_IS_EOS(b)) {
ctx->flags |= ENC_SEEN_EOS;
break;
}
}
if (!(ctx->flags & ENC_SEEN_EOS)) {
/* not enough data to sniff. Wait for more */
APR_BRIGADE_DO(b, ctx->bbsave) {
rv = apr_bucket_setaside(b, f->r->pool);
ap_assert(rv == APR_SUCCESS);
}
return APR_SUCCESS;
}
}
if (ctx->bblen == -1) {
ctx->bblen = BUFLEN-1;
}
/* flatten it into a NULL-terminated string */
ctx->buf = apr_palloc(f->r->pool, (apr_size_t)(ctx->bblen+1));
ctx->bytes = (apr_size_t)ctx->bblen;
rv = apr_brigade_flatten(ctx->bbsave, ctx->buf, &ctx->bytes);
ap_assert(rv == APR_SUCCESS);
ctx->buf[ctx->bytes] = 0;
sniff_encoding(f->r, ctx);
/* FIXME: hook here for rewriting start-of-data? */
/* nah, we only have one action here - call it inline */
fix_skipto(f->r, ctx);
/* we might change the Content-Length, so let's force its re-calculation */
apr_table_unset(f->r->headers_out, "Content-Length");
/* consume the data we just sniffed */
/* we need to omit any <meta> we just invalidated */
ctx->flags |= ENC_INITIALISED;
ap_set_module_config(f->r->request_config, &xml2enc_module, ctx);
}
if (ctx->bbnext == NULL) {
ctx->bbnext = apr_brigade_create(f->r->pool,
f->r->connection->bucket_alloc);
}
if (!ctx->convset) {
rv = ap_pass_brigade(f->next, ctx->bbsave);
apr_brigade_cleanup(ctx->bbsave);
ap_remove_output_filter(f);
return rv;
}
/* move the data back to bb */
APR_BRIGADE_CONCAT(bb, ctx->bbsave);
while (!APR_BRIGADE_EMPTY(bb)) {
b = APR_BRIGADE_FIRST(bb);
ctx->bytes = 0;
if (APR_BUCKET_IS_METADATA(b)) {
APR_BUCKET_REMOVE(b);
APR_BRIGADE_INSERT_TAIL(ctx->bbnext, b);
/* Besides FLUSH, aggregate meta buckets to send them at
* once below. This resource filter is over on EOS.
*/
pending_meta = 1;
if (APR_BUCKET_IS_EOS(b)) {
ap_remove_output_filter(f);
APR_BRIGADE_CONCAT(ctx->bbnext, bb);
}
else if (!APR_BUCKET_IS_FLUSH(b)) {
continue;
}
}
if (pending_meta) {
pending_meta = 0;
/* passing meta bucket down the chain */
rv = ap_pass_brigade(f->next, ctx->bbnext);
apr_brigade_cleanup(ctx->bbnext);
if (rv != APR_SUCCESS) {
return rv;
}
continue;
}
/* data bucket */
{
char* buf;
apr_size_t bytes = 0;
char fixbuf[BUFLEN];
apr_bucket* bdestroy = NULL;
if (insz > 0) { /* we have dangling data. Flatten it. */
buf = fixbuf;
bytes = BUFLEN;
rv = apr_brigade_flatten(bb, buf, &bytes);
ap_assert(rv == APR_SUCCESS);
if (bytes == insz) {
/* this is only what we've already tried to convert.
* The brigade is exhausted.
* Save remaining data for next time round
*/
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, f->r, APLOGNO(01437)
"xml2enc: Setting aside %" APR_SIZE_T_FMT
" unconverted bytes", bytes);
rv = ap_fflush(f->next, ctx->bbnext);
APR_BRIGADE_CONCAT(ctx->bbsave, bb);
APR_BRIGADE_DO(b, ctx->bbsave) {
ap_assert(apr_bucket_setaside(b, f->r->pool)
== APR_SUCCESS);
}
return rv;
}
/* remove the data we've just read */
rv = apr_brigade_partition(bb, bytes, &bstart);
while (b = APR_BRIGADE_FIRST(bb), b != bstart) {
apr_bucket_delete(b);
}
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, f->r, APLOGNO(01438)
"xml2enc: consuming %" APR_SIZE_T_FMT
" bytes flattened", bytes);
}
else {
rv = apr_bucket_read(b, (const char**)&buf, &bytes,
APR_BLOCK_READ);
APR_BUCKET_REMOVE(b);
bdestroy = b; /* can't destroy until finished with the data */
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, f->r, APLOGNO(01439)
"xml2enc: consuming %" APR_SIZE_T_FMT
" bytes from bucket", bytes);
}
/* OK, we've got some input we can use in [buf,bytes] */
if (rv == APR_SUCCESS) {
apr_size_t consumed;
xml2enc_run_preprocess(f, &buf, &bytes);
consumed = insz = bytes;
while (insz > 0) {
apr_status_t rv2;
if (ctx->bytes == ctx->bblen) {
/* nothing was converted last time!
* break out of this loop!
*/
b = apr_bucket_transient_create(buf+(bytes - insz), insz,
bb->bucket_alloc);
APR_BRIGADE_INSERT_HEAD(bb, b);
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, f->r, APLOGNO(01440)
"xml2enc: reinserting %" APR_SIZE_T_FMT
" unconsumed bytes from bucket", insz);
break;
}
ctx->bytes = (apr_size_t)ctx->bblen;
rv = apr_xlate_conv_buffer(ctx->convset, buf+(bytes - insz),
&insz, ctx->buf, &ctx->bytes);
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, rv, f->r, APLOGNO(01441)
"xml2enc: converted %" APR_SIZE_T_FMT
"/%" APR_OFF_T_FMT " bytes", consumed - insz,
ctx->bblen - ctx->bytes);
consumed = insz;
rv2 = ap_fwrite(f->next, ctx->bbnext, ctx->buf,
(apr_size_t)ctx->bblen - ctx->bytes);
if (rv2 != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, rv2, f->r, APLOGNO(01442)
"ap_fwrite failed");
return rv2;
}
switch (rv) {
case APR_SUCCESS:
continue;
case APR_EINCOMPLETE:
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, f->r, APLOGNO(01443)
"INCOMPLETE");
continue; /* If outbuf too small, go round again.
* If it was inbuf, we'll break out when
* we test ctx->bytes == ctx->bblen
*/
case APR_EINVAL: /* try skipping one bad byte */
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, f->r, APLOGNO(01444)
"Skipping invalid byte(s) in input stream!");
--insz;
continue;
default:
/* Erk! What's this?
* Bail out, flush, and hope to eat the buf raw
*/
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, f->r, APLOGNO(01445)
"Failed to convert input; trying it raw") ;
ctx->convset = NULL;
rv = ap_fflush(f->next, ctx->bbnext);
if (rv != APR_SUCCESS)
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, rv, f->r, APLOGNO(01446)
"ap_fflush failed");
apr_brigade_cleanup(ctx->bbnext);
}
}
} else {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, f->r, APLOGNO(01447)
"xml2enc: error reading data") ;
}
if (bdestroy)
apr_bucket_destroy(bdestroy);
if (rv != APR_SUCCESS)
return rv;
}
}
if (pending_meta) {
/* passing pending meta bucket down the chain before leaving */
rv = ap_pass_brigade(f->next, ctx->bbnext);
apr_brigade_cleanup(ctx->bbnext);
if (rv != APR_SUCCESS) {
return rv;
}
}
return APR_SUCCESS;
}
static apr_status_t xml2enc_charset(request_rec* r, xmlCharEncoding* encp,
const char** encoding)
{
xml2ctx* ctx = ap_get_module_config(r->request_config, &xml2enc_module);
if (!ctx || !(ctx->flags & ENC_INITIALISED)) {
return APR_EAGAIN;
}
*encp = ctx->xml2enc;
*encoding = ctx->encoding;
return HAVE_ENCODING(ctx->xml2enc) ? APR_SUCCESS : APR_EGENERAL;
}
#define PROTO_FLAGS AP_FILTER_PROTO_CHANGE|AP_FILTER_PROTO_CHANGE_LENGTH
static void xml2enc_hooks(apr_pool_t* pool)
{
ap_register_output_filter_protocol("xml2enc", xml2enc_ffunc,
xml2enc_filter_init,
AP_FTYPE_RESOURCE, PROTO_FLAGS);
APR_REGISTER_OPTIONAL_FN(xml2enc_filter);
APR_REGISTER_OPTIONAL_FN(xml2enc_charset);
seek_meta_ctype = ap_pregcomp(pool,
"(<meta[^>]*http-equiv[ \t\r\n='\"]*content-type[^>]*>)",
AP_REG_EXTENDED|AP_REG_ICASE) ;
seek_charset = ap_pregcomp(pool, "charset=([A-Za-z0-9_-]+)",
AP_REG_EXTENDED|AP_REG_ICASE) ;
}
static const char* set_alias(cmd_parms* cmd, void* CFG,
const char* charset, const char* alias)
{
const char* errmsg = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (errmsg != NULL)
return errmsg ;
else if (xmlAddEncodingAlias(charset, alias) == 0)
return NULL;
else
return "Error setting charset alias";
}
static const char* set_default(cmd_parms* cmd, void* CFG, const char* charset)
{
xml2cfg* cfg = CFG;
cfg->default_charset = charset;
cfg->default_encoding = xmlParseCharEncoding(charset);
switch(cfg->default_encoding) {
case XML_CHAR_ENCODING_NONE:
return "Default charset not found";
case XML_CHAR_ENCODING_ERROR:
return "Invalid or unsupported default charset";
default:
return NULL;
}
}
static const char* set_skipto(cmd_parms* cmd, void* CFG, const char* arg)
{
tattr* attr;
xml2cfg* cfg = CFG;
if (cfg->skipto == NULL)
cfg->skipto = apr_array_make(cmd->pool, 4, sizeof(tattr));
attr = apr_array_push(cfg->skipto) ;
attr->val = arg;
return NULL;
}
static const command_rec xml2enc_cmds[] = {
AP_INIT_TAKE1("xml2EncDefault", set_default, NULL, OR_ALL,
"Usage: xml2EncDefault charset"),
AP_INIT_ITERATE2("xml2EncAlias", set_alias, NULL, RSRC_CONF,
"EncodingAlias charset alias [more aliases]"),
AP_INIT_ITERATE("xml2StartParse", set_skipto, NULL, OR_ALL,
"Ignore anything in front of the first of these elements"),
{ NULL }
};
static void* xml2enc_config(apr_pool_t* pool, char* x)
{
xml2cfg* ret = apr_pcalloc(pool, sizeof(xml2cfg));
ret->default_encoding = XML_CHAR_ENCODING_NONE ;
return ret;
}
static void* xml2enc_merge(apr_pool_t* pool, void* BASE, void* ADD)
{
xml2cfg* base = BASE;
xml2cfg* add = ADD;
xml2cfg* ret = apr_pcalloc(pool, sizeof(xml2cfg));
ret->default_encoding = (add->default_encoding == XML_CHAR_ENCODING_NONE)
? base->default_encoding : add->default_encoding ;
ret->default_charset = add->default_charset
? add->default_charset : base->default_charset;
ret->skipto = add->skipto ? add->skipto : base->skipto;
return ret;
}
AP_DECLARE_MODULE(xml2enc) = {
STANDARD20_MODULE_STUFF,
xml2enc_config,
xml2enc_merge,
NULL,
NULL,
xml2enc_cmds,
xml2enc_hooks
};
APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(xml2enc, XML2ENC, int, preprocess,
(ap_filter_t *f, char** bufp, apr_size_t* bytesp),
(f, bufp, bytesp), OK, DECLINED)