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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <bluetooth/sdp.h>
#include <bluetooth/sdp_lib.h>
#include <glib.h>
#include "logging.h"
#include "sdp-xml.h"
static int compute_seq_size(sdp_data_t *data)
{
int unit_size = data->unitSize;
sdp_data_t *seq = data->val.dataseq;
for (; seq; seq = seq->next)
unit_size += seq->unitSize;
return unit_size;
}
struct context_data {
sdp_record_t *record;
sdp_data_t attr_data;
struct sdp_xml_data *stack_head;
uint16_t attr_id;
};
static void element_start(GMarkupParseContext *context,
const gchar *element_name, const gchar **attribute_names,
const gchar **attribute_values, gpointer user_data, GError **err)
{
struct context_data *ctx_data = user_data;
if (!strcmp(element_name, "record"))
return;
if (!strcmp(element_name, "attribute")) {
int i;
for (i = 0; attribute_names[i]; i++) {
if (!strcmp(attribute_names[i], "id")) {
ctx_data->attr_id = strtol(attribute_values[i], 0, 0);
break;
}
}
debug("New attribute 0x%04x", ctx_data->attr_id);
return;
}
if (ctx_data->stack_head) {
struct sdp_xml_data *newelem = sdp_xml_data_alloc();
newelem->next = ctx_data->stack_head;
ctx_data->stack_head = newelem;
} else {
ctx_data->stack_head = sdp_xml_data_alloc();
ctx_data->stack_head->next = NULL;
}
if (!strcmp(element_name, "sequence"))
ctx_data->stack_head->data = sdp_data_alloc(SDP_SEQ8, NULL);
else if (!strcmp(element_name, "alternate"))
ctx_data->stack_head->data = sdp_data_alloc(SDP_ALT8, NULL);
else {
int i;
/* Parse value, name, encoding */
for (i = 0; attribute_names[i]; i++) {
if (!strcmp(attribute_names[i], "value")) {
int curlen = strlen(ctx_data->stack_head->text);
int attrlen = strlen(attribute_values[i]);
/* Ensure we're big enough */
while ((curlen + 1 + attrlen) > ctx_data->stack_head->size) {
sdp_xml_data_expand(ctx_data->stack_head);
}
memcpy(ctx_data->stack_head->text + curlen,
attribute_values[i], attrlen);
ctx_data->stack_head->text[curlen + attrlen] = '\0';
}
if (!strcmp(attribute_names[i], "encoding")) {
if (!strcmp(attribute_values[i], "hex"))
ctx_data->stack_head->type = 1;
}
if (!strcmp(attribute_names[i], "name")) {
ctx_data->stack_head->name = strdup(attribute_values[i]);
}
}
ctx_data->stack_head->data = sdp_xml_parse_datatype(element_name,
ctx_data->stack_head, ctx_data->record);
if (ctx_data->stack_head->data == NULL)
error("Can't parse element %s", element_name);
}
}
static void element_end(GMarkupParseContext *context,
const gchar *element_name, gpointer user_data, GError **err)
{
struct context_data *ctx_data = user_data;
struct sdp_xml_data *elem;
if (!strcmp(element_name, "record"))
return;
if (!strcmp(element_name, "attribute")) {
if (ctx_data->stack_head && ctx_data->stack_head->data) {
int ret = sdp_attr_add(ctx_data->record, ctx_data->attr_id,
ctx_data->stack_head->data);
if (ret == -1)
debug("Trouble adding attribute\n");
ctx_data->stack_head->data = NULL;
sdp_xml_data_free(ctx_data->stack_head);
ctx_data->stack_head = NULL;
} else {
debug("No data for attribute 0x%04x\n", ctx_data->attr_id);
}
return;
}
if (!strcmp(element_name, "sequence")) {
ctx_data->stack_head->data->unitSize = compute_seq_size(ctx_data->stack_head->data);
if (ctx_data->stack_head->data->unitSize > USHRT_MAX) {
ctx_data->stack_head->data->unitSize += sizeof(uint32_t);
ctx_data->stack_head->data->dtd = SDP_SEQ32;
} else if (ctx_data->stack_head->data->unitSize > UCHAR_MAX) {
ctx_data->stack_head->data->unitSize += sizeof(uint16_t);
ctx_data->stack_head->data->dtd = SDP_SEQ16;
} else {
ctx_data->stack_head->data->unitSize += sizeof(uint8_t);
}
} else if (!strcmp(element_name, "alternate")) {
ctx_data->stack_head->data->unitSize = compute_seq_size(ctx_data->stack_head->data);
if (ctx_data->stack_head->data->unitSize > USHRT_MAX) {
ctx_data->stack_head->data->unitSize += sizeof(uint32_t);
ctx_data->stack_head->data->dtd = SDP_ALT32;
} else if (ctx_data->stack_head->data->unitSize > UCHAR_MAX) {
ctx_data->stack_head->data->unitSize += sizeof(uint16_t);
ctx_data->stack_head->data->dtd = SDP_ALT16;
} else {
ctx_data->stack_head->data->unitSize += sizeof(uint8_t);
}
}
if (ctx_data->stack_head->next && ctx_data->stack_head->data &&
ctx_data->stack_head->next->data) {
switch (ctx_data->stack_head->next->data->dtd) {
case SDP_SEQ8:
case SDP_SEQ16:
case SDP_SEQ32:
case SDP_ALT8:
case SDP_ALT16:
case SDP_ALT32:
ctx_data->stack_head->next->data->val.dataseq =
sdp_seq_append(ctx_data->stack_head->next->data->val.dataseq,
ctx_data->stack_head->data);
ctx_data->stack_head->data = NULL;
break;
}
elem = ctx_data->stack_head;
ctx_data->stack_head = ctx_data->stack_head->next;
sdp_xml_data_free(elem);
}
}
static GMarkupParser parser = {
element_start, element_end, NULL, NULL, NULL
};
sdp_record_t *sdp_xml_parse_record(const char *data, int size)
{
GMarkupParseContext *ctx;
struct context_data *ctx_data;
sdp_record_t *record;
ctx_data = malloc(sizeof(*ctx_data));
if (!ctx_data)
return NULL;
record = sdp_record_alloc();
if (!record) {
free(ctx_data);
return NULL;
}
memset(ctx_data, 0, sizeof(*ctx_data));
ctx_data->record = record;
ctx = g_markup_parse_context_new(&parser, 0, ctx_data, NULL);
if (g_markup_parse_context_parse(ctx, data, size, NULL) == FALSE) {
error("XML parsing error");
g_markup_parse_context_free(ctx);
sdp_record_free(record);
free(ctx_data);
return NULL;
}
g_markup_parse_context_free(ctx);
free(ctx_data);
return record;
}
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