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/*
XML/HTTP response handling
Copyright (C) 2004-2006, Joe Orton <joe@manyfish.co.uk>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include "ne_internal.h"
#include "ne_xmlreq.h"
#include "ne_basic.h"
#include "ne_string.h"
/* Handle an XML response parse error, setting session error string
* and closing the connection. */
static int parse_error(ne_session *sess, ne_xml_parser *parser)
{
ne_set_error(sess, _("Could not parse response: %s"),
ne_xml_get_error(parser));
ne_close_connection(sess);
return NE_ERROR;
}
int ne_xml_parse_response(ne_request *req, ne_xml_parser *parser)
{
char buf[8000];
ssize_t bytes;
int ret = 0;
while ((bytes = ne_read_response_block(req, buf, sizeof buf)) > 0) {
ret = ne_xml_parse(parser, buf, bytes);
if (ret)
return parse_error(ne_get_session(req), parser);
}
if (bytes == 0) {
/* Tell the parser that end of document was reached: */
if (ne_xml_parse(parser, NULL, 0) == 0)
return NE_OK;
else
return parse_error(ne_get_session(req), parser);
} else {
return NE_ERROR;
}
}
/* Returns non-zero if given content-type is an XML media type,
* following the RFC 3023 rules. */
static int media_type_is_xml(const ne_content_type *ctype)
{
size_t stlen;
return
(ne_strcasecmp(ctype->type, "text") == 0
&& ne_strcasecmp(ctype->subtype, "xml") == 0)
|| (ne_strcasecmp(ctype->type, "application") == 0
&& ne_strcasecmp(ctype->subtype, "xml") == 0)
|| ((stlen = strlen(ctype->subtype)) > 4
&& ne_strcasecmp(ctype->subtype + stlen - 4, "+xml") == 0);
}
int ne_xml_dispatch_request(ne_request *req, ne_xml_parser *parser)
{
int ret;
do {
int parseit = 0;
ret = ne_begin_request(req);
if (ret) break;
if (ne_get_status(req)->klass == 2) {
ne_content_type ctype;
if (ne_get_content_type(req, &ctype) == 0) {
parseit = media_type_is_xml(&ctype);
ne_free(ctype.value);
}
}
if (parseit)
ret = ne_xml_parse_response(req, parser);
else
ret = ne_discard_response(req);
if (ret == NE_OK)
ret = ne_end_request(req);
} while (ret == NE_RETRY);
return ret;
}
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