dissect plists in three file (abstract binary xml)

2 files changed, 1096 insertions, 0 deletions

diff --git a/src/bplist.c b/src/bplist.c
new file mode 100644
index 0000000..6136fe9
--- /dev/null
+++ b/src/bplist.c
@@ -0,0 +1,790 @@
+/*
+ * plist.c
+ * Binary plist implementation
+ *
+ * Copyright (c) 2008 Jonathan Beck All Rights Reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 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
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
+ */
+
+
+#include "plist.h"
+#include <wchar.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+/* Magic marker and size. */
+#define BPLIST_MAGIC		"bplist"
+#define BPLIST_MAGIC_SIZE	6
+
+#define BPLIST_VERSION		"00"
+#define BPLIST_VERSION_SIZE	2
+
+
+#define BPLIST_TRL_SIZE 	26
+#define BPLIST_TRL_OFFSIZE_IDX 	0
+#define BPLIST_TRL_PARMSIZE_IDX 1
+#define BPLIST_TRL_NUMOBJ_IDX 	2
+#define BPLIST_TRL_ROOTOBJ_IDX 	10
+#define BPLIST_TRL_OFFTAB_IDX 	18
+
+enum {
+	BPLIST_NULL = 0x00,
+	BPLIST_TRUE = 0x08,
+	BPLIST_FALSE = 0x09,
+	BPLIST_FILL = 0x0F,			/* will be used for length grabbing */
+	BPLIST_UINT = 0x10,
+	BPLIST_REAL = 0x20,
+	BPLIST_DATE = 0x30,
+	BPLIST_DATA = 0x40,
+	BPLIST_STRING = 0x50,
+	BPLIST_UNICODE = 0x60,
+	BPLIST_UID = 0x70,
+	BPLIST_ARRAY = 0xA0,
+	BPLIST_SET = 0xC0,
+	BPLIST_DICT = 0xD0,
+	BPLIST_MASK = 0xF0
+};
+
+void byte_convert(char *address, size_t size)
+{
+	int i = 0, j = 0;
+	char tmp = '\0';
+
+	for (i = 0; i < (size / 2); i++) {
+		tmp = address[i];
+		j = ((size - 1) + 0) - i;
+		address[i] = address[j];
+		address[j] = tmp;
+	}
+}
+
+#include <byteswap.h>
+#define swap_n_bytes(x, n) \
+		n == 8 ? bswap_64(*(uint64_t *)(x)) : \
+		(n == 4 ? bswap_32(*(uint32_t *)(x)) : \
+		(n == 2 ? bswap_16(*(uint16_t *)(x)) : *(x) ))
+
+#define be64dec(x) bswap_64( *(uint64_t*)(x) )
+
+#define get_needed_bytes(x) (x <= 1<<8 ? 1 : ( x <= 1<<16 ? 2 : ( x <= 1<<32 ? 4 : 8)))
+#define get_real_bytes(x) (x >> 32 ? 4 : 8)
+
+GNode *parse_uint_node(char *bnode, uint8_t size, char **next_object)
+{
+	struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+
+	size = 1 << size;			// make length less misleading
+	switch (size) {
+	case sizeof(uint8_t):
+		data->intval = bnode[0];
+		break;
+	case sizeof(uint16_t):
+		memcpy(&data->intval, bnode, size);
+		data->intval = ntohs(data->intval);
+		break;
+	case sizeof(uint32_t):
+		memcpy(&data->intval, bnode, size);
+		data->intval = ntohl(data->intval);
+		break;
+	case sizeof(uint64_t):
+		memcpy(&data->intval, bnode, size);
+		byte_convert((char *) &data->intval, size);
+		break;
+	default:
+		free(data);
+		return NULL;
+	};
+
+	*next_object = bnode + size;
+	data->type = PLIST_UINT;
+	return g_node_new(data);
+}
+
+GNode *parse_real_node(char *bnode, uint8_t size)
+{
+	struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+
+	size = 1 << size;			// make length less misleading
+	switch (size) {
+	case sizeof(float):
+		memcpy(&data->realval, bnode, size);
+		byte_convert((char *) &data->realval, size);
+		break;
+	case sizeof(double):
+		memcpy(&data->realval, bnode, size);
+		byte_convert((char *) &data->realval, size);
+		break;
+	default:
+		free(data);
+		return NULL;
+	}
+	data->type = PLIST_REAL;
+	return g_node_new(data);
+}
+
+GNode *parse_string_node(char *bnode, uint8_t size)
+{
+	struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+
+	data->type = PLIST_STRING;
+	data->strval = (char *) malloc(sizeof(char) * (size + 1));
+	memcpy(data->strval, bnode, size);
+	data->strval[size] = '\0';
+
+	return g_node_new(data);
+}
+
+GNode *parse_unicode_node(char *bnode, uint8_t size)
+{
+	struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+
+	data->type = PLIST_UNICODE;
+	data->unicodeval = (wchar_t *) malloc(sizeof(wchar_t) * (size + 1));
+	memcpy(data->unicodeval, bnode, size);
+	data->unicodeval[size] = '\0';
+
+	return g_node_new(data);
+}
+
+GNode *parse_data_node(char *bnode, uint64_t size, uint32_t ref_size)
+{
+	struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+
+	data->type = PLIST_DATA;
+	data->length = size;
+	data->buff = (char *) malloc(sizeof(char) * size);
+	memcpy(data->buff, bnode, sizeof(char) * size);
+
+	return g_node_new(data);
+}
+
+GNode *parse_dict_node(char *bnode, uint64_t size, uint32_t ref_size)
+{
+	struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+
+	data->type = PLIST_DICT;
+	data->length = size;
+	data->buff = (char *) malloc(sizeof(char) * size * ref_size * 2);
+	memcpy(data->buff, bnode, sizeof(char) * size * ref_size * 2);
+
+	return g_node_new(data);
+}
+
+GNode *parse_array_node(char *bnode, uint64_t size, uint32_t ref_size)
+{
+	struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+
+	data->type = PLIST_ARRAY;
+	data->length = size;
+	data->buff = (char *) malloc(sizeof(char) * size * ref_size);
+	memcpy(data->buff, bnode, sizeof(char) * size * ref_size);
+
+	return g_node_new(data);
+}
+
+
+
+GNode *parse_bin_node(char *object, uint8_t dict_size, char **next_object)
+{
+	if (!object)
+		return NULL;
+
+	uint16_t type = *object & 0xF0;
+	uint64_t size = *object & 0x0F;
+	object++;
+
+	switch (type) {
+
+	case BPLIST_NULL:
+		switch (size) {
+
+		case BPLIST_TRUE:
+			{
+				struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+				data->type = PLIST_BOOLEAN;
+				data->boolval = TRUE;
+				return g_node_new(data);
+			}
+
+		case BPLIST_FALSE:
+			{
+				struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+				data->type = PLIST_BOOLEAN;
+				data->boolval = FALSE;
+				return g_node_new(data);
+			}
+
+		case BPLIST_NULL:
+		default:
+			return NULL;
+		}
+
+	case BPLIST_UINT:
+		return parse_uint_node(object, size, next_object);
+
+	case BPLIST_REAL:
+		return parse_real_node(object, size);
+
+	case BPLIST_DATE:
+		if (3 != size)
+			return NULL;
+		else
+			return parse_real_node(object, size);
+
+	case BPLIST_DATA:
+		if (0x0F == size) {
+			plist_t size_node = parse_bin_node(object, dict_size, &object);
+			if (plist_get_node_type(size_node) != PLIST_UINT)
+				return NULL;
+			size = plist_get_node_uint_val(size_node);
+		}
+		return parse_data_node(object, size, dict_size);
+
+	case BPLIST_STRING:
+		if (0x0F == size) {
+			plist_t size_node = parse_bin_node(object, dict_size, &object);
+			if (plist_get_node_type(size_node) != PLIST_UINT)
+				return NULL;
+			size = plist_get_node_uint_val(size_node);
+		}
+		return parse_string_node(object, size);
+
+	case BPLIST_UNICODE:
+		if (0x0F == size) {
+			plist_t size_node = parse_bin_node(object, dict_size, &object);
+			if (plist_get_node_type(size_node) != PLIST_UINT)
+				return NULL;
+			size = plist_get_node_uint_val(size_node);
+		}
+		return parse_unicode_node(object, size);
+
+	case BPLIST_UID:
+	case BPLIST_ARRAY:
+		if (0x0F == size) {
+			plist_t size_node = parse_bin_node(object, dict_size, &object);
+			if (plist_get_node_type(size_node) != PLIST_UINT)
+				return NULL;
+			size = plist_get_node_uint_val(size_node);
+		}
+		return parse_array_node(object, size, dict_size);
+
+	case BPLIST_SET:
+	case BPLIST_DICT:
+		if (0x0F == size) {
+			plist_t size_node = parse_bin_node(object, dict_size, &object);
+			if (plist_get_node_type(size_node) != PLIST_UINT)
+				return NULL;
+			object++;
+			size = plist_get_node_uint_val(size_node);
+		}
+		return parse_dict_node(object, size, dict_size);
+
+	}
+	return NULL;
+}
+
+gpointer copy_plist_data(gconstpointer src, gpointer data)
+{
+	struct plist_data *srcdata = (struct plist_data *) src;
+	struct plist_data *dstdata = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+
+	dstdata->type = srcdata->type;
+	dstdata->length = srcdata->length;
+	switch (dstdata->type) {
+	case PLIST_BOOLEAN:
+		dstdata->boolval = srcdata->boolval;
+		break;
+	case PLIST_UINT:
+		dstdata->intval = srcdata->intval;
+		break;
+	case PLIST_DATE:
+	case PLIST_REAL:
+		dstdata->realval = srcdata->realval;
+		break;
+	case PLIST_KEY:
+	case PLIST_STRING:
+		dstdata->strval = strdup(srcdata->strval);
+		break;
+	case PLIST_UNICODE:
+		dstdata->unicodeval = wcsdup(srcdata->unicodeval);
+		break;
+	case PLIST_DATA:
+	case PLIST_ARRAY:
+	case PLIST_DICT:
+		dstdata->buff = (char *) malloc(sizeof(char *) * srcdata->length);
+		memcpy(dstdata->buff, srcdata->buff, sizeof(char *) * srcdata->length);
+		break;
+
+	default:
+		break;
+	}
+
+	return dstdata;
+}
+
+void bin_to_plist(const char *plist_bin, uint32_t length, plist_t * plist)
+{
+	//first check we have enough data
+	if (!(length >= BPLIST_MAGIC_SIZE + BPLIST_VERSION_SIZE + BPLIST_TRL_SIZE))
+		return;
+	//check that plist_bin in actually a plist
+	if (memcmp(plist_bin, BPLIST_MAGIC, BPLIST_MAGIC_SIZE) != 0)
+		return;
+	//check for known version
+	if (memcmp(plist_bin + BPLIST_MAGIC_SIZE, BPLIST_VERSION, BPLIST_VERSION_SIZE) != 0)
+		return;
+
+	//now parse trailer
+	const char *trailer = plist_bin + (length - BPLIST_TRL_SIZE);
+
+	uint8_t offset_size = trailer[BPLIST_TRL_OFFSIZE_IDX];
+	uint8_t dict_param_size = trailer[BPLIST_TRL_PARMSIZE_IDX];
+	uint64_t num_objects = be64dec(trailer + BPLIST_TRL_NUMOBJ_IDX);
+	uint64_t root_object = be64dec(trailer + BPLIST_TRL_ROOTOBJ_IDX);
+	uint64_t offset_table_index = be64dec(trailer + BPLIST_TRL_OFFTAB_IDX);
+
+	log_debug_msg("Offset size: %i\n", offset_size);
+	log_debug_msg("Ref size: %i\n", dict_param_size);
+	log_debug_msg("Number of objects: %lli\n", num_objects);
+	log_debug_msg("Root object index: %lli\n", root_object);
+	log_debug_msg("Offset table index: %lli\n", offset_table_index);
+
+	if (num_objects == 0)
+		return;
+
+	//allocate serialized array of nodes
+	plist_t *nodeslist = NULL;
+	nodeslist = (plist_t *) malloc(sizeof(plist_t) * num_objects);
+
+	if (!nodeslist)
+		return;
+
+	//parse serialized nodes
+	uint64_t i = 0;
+	uint64_t current_offset = 0;
+	const char *offset_table = plist_bin + offset_table_index;
+	for (i = 0; i < num_objects; i++) {
+		current_offset = swap_n_bytes(offset_table + i * offset_size, offset_size);
+
+		log_debug_msg("parse_nodes: current_offset = %i\n", current_offset);
+		char *obj = plist_bin + current_offset;
+		nodeslist[i] = parse_bin_node(obj, dict_param_size, &obj);
+		log_debug_msg("parse_nodes: parse_raw_node done\n");
+	}
+
+	//setup children for structured types
+	int j = 0, str_i = 0, str_j = 0;
+	uint32_t index1 = 0, index2 = 0;
+
+	for (i = 0; i < num_objects; i++) {
+
+		log_debug_msg("parse_nodes: on node %i\n", i);
+		struct plist_data *data = (struct plist_data *) nodeslist[i]->data;
+
+		switch (data->type) {
+		case PLIST_DICT:
+			log_debug_msg("parse_nodes: dictionary found\n");
+			for (j = 0; j < data->length; j++) {
+				str_i = j * dict_param_size;
+				str_j = (j + data->length) * dict_param_size;
+
+				index1 = swap_n_bytes(data->buff + str_i, dict_param_size);
+				index2 = swap_n_bytes(data->buff + str_j, dict_param_size);
+
+				//first one is actually a key
+				((struct plist_data *) nodeslist[index1]->data)->type = PLIST_KEY;
+
+				if (G_NODE_IS_ROOT(nodeslist[index1]))
+					g_node_append(nodeslist[i], nodeslist[index1]);
+				else
+					g_node_append(nodeslist[i], g_node_copy_deep(nodeslist[index1], copy_plist_data, NULL));
+
+				if (G_NODE_IS_ROOT(nodeslist[index2]))
+					g_node_append(nodeslist[i], nodeslist[index2]);
+				else
+					g_node_append(nodeslist[i], g_node_copy_deep(nodeslist[index2], copy_plist_data, NULL));
+			}
+
+			free(data->buff);
+			break;
+
+		case PLIST_ARRAY:
+			log_debug_msg("parse_nodes: array found\n");
+			for (j = 0; j < data->length; j++) {
+				str_j = j * dict_param_size;
+				index1 = swap_n_bytes(data->buff + str_j, dict_param_size);
+
+				//g_node_append(nodeslist[i], nodeslist[index1]);
+				if (G_NODE_IS_ROOT(nodeslist[index1]))
+					g_node_append(nodeslist[i], nodeslist[index1]);
+				else
+					g_node_append(nodeslist[i], g_node_copy_deep(nodeslist[index1], copy_plist_data, NULL));
+			}
+			free(data->buff);
+			break;
+		default:
+			break;
+		}
+	}
+
+	*plist = nodeslist[root_object];
+}
+
+guint plist_data_hash(gconstpointer key)
+{
+	struct plist_data *data = (struct plist_data *) ((GNode *) key)->data;
+
+	guint hash = data->type;
+	guint i = 0;
+
+	char *buff = NULL;
+	guint size = 0;
+
+	switch (data->type) {
+	case PLIST_BOOLEAN:
+	case PLIST_UINT:
+	case PLIST_REAL:
+		buff = (char *) &data->intval;
+		size = 8;
+		break;
+	case PLIST_KEY:
+	case PLIST_STRING:
+		buff = data->strval;
+		size = strlen(buff);
+		break;
+	case PLIST_UNICODE:
+		buff = data->unicodeval;
+		size = strlen(buff) * sizeof(wchar_t);
+		break;
+	case PLIST_DATA:
+	case PLIST_ARRAY:
+	case PLIST_DICT:
+		//for these types only hash pointer
+		buff = &key;
+		size = sizeof(gconstpointer);
+		break;
+	case PLIST_DATE:
+	default:
+		break;
+	}
+
+	//now perform hash
+	for (i = 0; i < size; buff++, i++)
+		hash = hash << 7 ^ (*buff);
+
+	return hash;
+}
+
+gboolean plist_data_compare(gconstpointer a, gconstpointer b)
+{
+	if (!a || !b)
+		return FALSE;
+
+	if (!((GNode *) a)->data || !((GNode *) b)->data)
+		return FALSE;
+
+	struct plist_data *val_a = (struct plist_data *) ((GNode *) a)->data;
+	struct plist_data *val_b = (struct plist_data *) ((GNode *) b)->data;
+
+	if (val_a->type != val_b->type)
+		return FALSE;
+
+	switch (val_a->type) {
+	case PLIST_BOOLEAN:
+	case PLIST_UINT:
+	case PLIST_REAL:
+		if (val_a->intval == val_b->intval)	//it is an union so this is sufficient
+			return TRUE;
+		else
+			return FALSE;
+
+	case PLIST_KEY:
+	case PLIST_STRING:
+		if (!strcmp(val_a->strval, val_b->strval))
+			return TRUE;
+		else
+			return FALSE;
+	case PLIST_UNICODE:
+		if (!strcmp(val_a->unicodeval, val_b->unicodeval))
+			return TRUE;
+		else
+			return FALSE;
+
+	case PLIST_DATA:
+	case PLIST_ARRAY:
+	case PLIST_DICT:
+		//compare pointer
+		if (a == b)
+			return TRUE;
+		else
+			return FALSE;
+		break;
+	case PLIST_DATE:
+	default:
+		break;
+	}
+	return FALSE;
+}
+
+struct serialize_s {
+	GPtrArray *objects;
+	GHashTable *ref_table;
+};
+
+void serialize_plist(GNode * node, gpointer data)
+{
+	struct serialize_s *ser = (struct serialize_s *) data;
+	uint64_t current_index = ser->objects->len;
+
+	//first check that node is not yet in objects
+	gpointer val = g_hash_table_lookup(ser->ref_table, node);
+	if (val) {
+		//data is already in table
+		return;
+	}
+	//insert new ref
+	g_hash_table_insert(ser->ref_table, node, GUINT_TO_POINTER(current_index));
+
+	//now append current node to object array
+	g_ptr_array_add(ser->objects, node);
+
+	//now recurse on children
+	g_node_children_foreach(node, G_TRAVERSE_ALL, serialize_plist, data);
+	return;
+}
+
+
+
+void write_int(GByteArray * bplist, uint64_t val)
+{
+	uint64_t size = get_needed_bytes(val);
+	uint8_t *buff = (uint8_t *) malloc(sizeof(uint8_t) + size);
+	buff[0] = BPLIST_UINT | size >> 1;
+	memcpy(buff + 1, &val, size);
+	swap_n_bytes(buff + 1, size);
+	g_byte_array_append(bplist, buff, sizeof(uint8_t) + size);
+	free(buff);
+}
+
+void write_real(GByteArray * bplist, double val)
+{
+	uint64_t size = get_real_bytes(*((uint64_t *) & val));	//cheat to know used space
+	uint8_t *buff = (uint8_t *) malloc(sizeof(uint8_t) + size);
+	buff[0] = BPLIST_REAL | size >> 1;
+	memcpy(buff + 1, &val, size);
+	swap_n_bytes(buff + 1, size);
+	g_byte_array_append(bplist, buff, sizeof(uint8_t) + size);
+	free(buff);
+}
+
+void write_raw_data(GByteArray * bplist, uint8_t mark, uint8_t * val, uint64_t size)
+{
+	uint8_t marker = mark | (size < 15 ? size : 0xf);
+	g_byte_array_append(bplist, &marker, sizeof(uint8_t));
+	if (size >= 15) {
+		GByteArray *int_buff = g_byte_array_new();
+		write_int(int_buff, size);
+		g_byte_array_append(bplist, int_buff->data, int_buff->len);
+		g_byte_array_free(int_buff, TRUE);
+	}
+	uint8_t *buff = (uint8_t *) malloc(size);
+	memcpy(buff, val, size);
+	g_byte_array_append(bplist, buff, size);
+	free(buff);
+}
+
+void write_data(GByteArray * bplist, uint8_t * val, uint64_t size)
+{
+	write_raw_data(bplist, BPLIST_DATA, val, size);
+}
+
+void write_string(GByteArray * bplist, char *val)
+{
+	uint64_t size = strlen(val);
+	write_raw_data(bplist, BPLIST_STRING, val, size);
+}
+
+void write_array(GByteArray * bplist, GNode * node, GHashTable * ref_table, uint8_t dict_param_size)
+{
+	uint64_t size = g_node_n_children(node);
+	uint8_t marker = BPLIST_ARRAY | (size < 15 ? size : 0xf);
+	g_byte_array_append(bplist, &marker, sizeof(uint8_t));
+	if (size >= 15) {
+		GByteArray *int_buff = g_byte_array_new();
+		write_int(int_buff, size);
+		g_byte_array_append(bplist, int_buff->data, int_buff->len);
+		g_byte_array_free(int_buff, TRUE);
+	}
+
+	uint64_t idx = 0;
+	uint8_t *buff = (uint8_t *) malloc(size * dict_param_size);
+
+	GNode *cur = NULL;
+	int i = 0;
+	for (i = 0, cur = node->children; cur && i < size; cur = cur->next, i++) {
+		idx = GPOINTER_TO_UINT(g_hash_table_lookup(ref_table, cur));
+		memcpy(buff + i * dict_param_size, &idx, dict_param_size);
+		swap_n_bytes(buff + i * dict_param_size, dict_param_size);
+	}
+
+	//now append to bplist
+	g_byte_array_append(bplist, buff, size * dict_param_size);
+	free(buff);
+
+}
+
+void write_dict(GByteArray * bplist, GNode * node, GHashTable * ref_table, uint8_t dict_param_size)
+{
+	uint64_t size = g_node_n_children(node) / 2;
+	uint8_t marker = BPLIST_ARRAY | (size < 15 ? size : 0xf);
+	g_byte_array_append(bplist, &marker, sizeof(uint8_t));
+	if (size >= 15) {
+		GByteArray *int_buff = g_byte_array_new();
+		write_int(int_buff, size);
+		g_byte_array_append(bplist, int_buff->data, int_buff->len);
+		g_byte_array_free(int_buff, TRUE);
+	}
+
+	uint64_t idx1 = 0;
+	uint64_t idx2 = 0;
+	uint8_t *buff = (uint8_t *) malloc(size * 2 * dict_param_size);
+
+	GNode *cur = NULL;
+	int i = 0;
+	for (i = 0, cur = node->children; cur && i < size; cur = cur->next->next, i++) {
+		idx1 = GPOINTER_TO_UINT(g_hash_table_lookup(ref_table, cur));
+		memcpy(buff + i * dict_param_size, &idx1, dict_param_size);
+		swap_n_bytes(buff + i * dict_param_size, dict_param_size);
+
+		idx2 = GPOINTER_TO_UINT(g_hash_table_lookup(ref_table, cur->next));
+		memcpy(buff + (i + size) * dict_param_size, &idx2, dict_param_size);
+		swap_n_bytes(buff + (i + size) * dict_param_size, dict_param_size);
+	}
+
+	//now append to bplist
+	g_byte_array_append(bplist, buff, size * dict_param_size);
+	free(buff);
+
+}
+
+void plist_to_bin(plist_t plist, char **plist_bin, uint32_t * length)
+{
+	//first serialize tree
+
+	//list of objects
+	GPtrArray *objects = g_ptr_array_new();
+	//hashtable to write only once same nodes
+	GHashTable *ref_table = g_hash_table_new(plist_data_hash, plist_data_compare);
+
+	//serialize plist
+	struct serialize_s ser_s = { objects, ref_table };
+	g_node_children_foreach(plist, G_TRAVERSE_ALL, serialize_plist, &ser_s);
+
+	//now stream to output buffer
+	uint8_t offset_size = 0;	//unknown yet
+	uint8_t dict_param_size = get_needed_bytes(objects->len);
+	uint64_t num_objects = objects->len;
+	uint64_t root_object = 0;	//root is first in list
+	uint64_t offset_table_index = 0;	//unknown yet
+
+	//setup a dynamic bytes array to store bplist in
+	GByteArray *bplist_buff = g_byte_array_new();
+
+	//set magic number and version
+	g_byte_array_append(bplist_buff, BPLIST_MAGIC, BPLIST_MAGIC_SIZE);
+	g_byte_array_append(bplist_buff, BPLIST_VERSION, BPLIST_VERSION_SIZE);
+
+	//write objects and table
+	int i = 0;
+	uint8_t *buff = NULL;
+	uint8_t size = 0;
+	uint64_t offsets[num_objects];
+	for (i = 0; i < num_objects; i++) {
+
+		offsets[i] = bplist_buff->len;
+		struct plist_data *data = (struct plist_data *) ((GNode *) g_ptr_array_index(objects, i))->data;
+
+		switch (data->type) {
+		case PLIST_BOOLEAN:
+			buff = (uint8_t *) malloc(sizeof(uint8_t));
+			buff[0] = data->boolval ? BPLIST_TRUE : BPLIST_FALSE;
+			g_byte_array_append(bplist_buff, buff, sizeof(uint8_t));
+			free(buff);
+			break;
+
+		case PLIST_UINT:
+			write_int(bplist_buff, data->intval);
+			break;
+
+		case PLIST_REAL:
+			write_real(bplist_buff, data->realval);
+			break;
+
+		case PLIST_KEY:
+		case PLIST_STRING:
+			write_string(bplist_buff, data->strval);
+			break;
+		case PLIST_UNICODE:
+			//TODO
+			break;
+		case PLIST_DATA:
+			write_data(bplist_buff, data->strval, data->length);
+		case PLIST_ARRAY:
+			write_array(bplist_buff, g_ptr_array_index(objects, i), ref_table, dict_param_size);
+			break;
+		case PLIST_DICT:
+			write_dict(bplist_buff, g_ptr_array_index(objects, i), ref_table, dict_param_size);
+			break;
+		case PLIST_DATE:
+			//TODO
+			break;
+		default:
+			break;
+		}
+	}
+
+	//write offsets
+	offset_size = get_needed_bytes(bplist_buff->len);
+	for (i = 0; i <= num_objects; i++) {
+		uint8_t *buff = (uint8_t *) malloc(offset_size);
+		memcpy(buff, offsets + i, offset_size);
+		swap_n_bytes(buff, offset_size);
+		g_byte_array_append(bplist_buff, buff, offset_size);
+		free(buff);
+	}
+
+	//setup trailer
+	num_objects = bswap_64(num_objects);
+	root_object = bswap_64(root_object);
+	offset_table_index = bswap_64(offset_table_index);
+
+	char trailer[BPLIST_TRL_SIZE];
+	memcpy(trailer + BPLIST_TRL_OFFSIZE_IDX, &offset_size, sizeof(uint8_t));
+	memcpy(trailer + BPLIST_TRL_PARMSIZE_IDX, &dict_param_size, sizeof(uint8_t));
+	memcpy(trailer + BPLIST_TRL_NUMOBJ_IDX, &num_objects, sizeof(uint64_t));
+	memcpy(trailer + BPLIST_TRL_ROOTOBJ_IDX, &root_object, sizeof(uint64_t));
+	memcpy(trailer + BPLIST_TRL_OFFTAB_IDX, &offset_table_index, sizeof(uint64_t));
+
+	g_byte_array_append(bplist_buff, trailer, BPLIST_TRL_SIZE);
+
+	//duplicate buffer
+	*plist_bin = (char *) malloc(bplist_buff->len);
+	memcpy(*plist_bin, bplist_buff->data, bplist_buff->len);
+	*length = bplist_buff->len;
+
+	g_byte_array_free(bplist_buff, TRUE);
+}
diff --git a/src/xplist.c b/src/xplist.c
new file mode 100644
index 0000000..a87b259
--- /dev/null
+++ b/src/xplist.c
@@ -0,0 +1,306 @@
+/*
+ * plist.c
+ * XML plist implementation
+ *
+ * Copyright (c) 2008 Jonathan Beck All Rights Reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 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
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
+ */
+
+
+#include <string.h>
+#include <assert.h>
+#include "utils.h"
+#include "plist.h"
+#include <wchar.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+
+
+const char *plist_base = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n\
+<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n\
+<plist version=\"1.0\">\n\
+</plist>\0";
+
+
+/** Formats a block of text to be a given indentation and width.
+ * 
+ * The total width of the return string will be depth + cols.
+ *
+ * @param buf The string to format.
+ * @param cols The number of text columns for returned block of text.
+ * @param depth The number of tabs to indent the returned block of text.
+ *
+ * @return The formatted string.
+ */
+char *format_string(const char *buf, int cols, int depth)
+{
+	int colw = depth + cols + 1;
+	int len = strlen(buf);
+	int nlines = len / cols + 1;
+	char *new_buf = (char *) malloc(nlines * colw + depth + 1);
+	int i = 0;
+	int j = 0;
+
+	assert(cols >= 0);
+	assert(depth >= 0);
+
+	// Inserts new lines and tabs at appropriate locations
+	for (i = 0; i < nlines; i++) {
+		new_buf[i * colw] = '\n';
+		for (j = 0; j < depth; j++)
+			new_buf[i * colw + 1 + j] = '\t';
+		memcpy(new_buf + i * colw + 1 + depth, buf + i * cols, cols);
+	}
+	new_buf[len + (1 + depth) * nlines] = '\n';
+
+	// Inserts final row of indentation and termination character
+	for (j = 0; j < depth; j++)
+		new_buf[len + (1 + depth) * nlines + 1 + j] = '\t';
+	new_buf[len + (1 + depth) * nlines + depth + 1] = '\0';
+
+	return new_buf;
+}
+
+
+
+struct xml_node {
+	xmlNodePtr xml;
+	uint32_t depth;
+};
+
+/** Creates a new plist XML document.
+ * 
+ * @return The plist XML document.
+ */
+xmlDocPtr new_plist()
+{
+	char *plist = strdup(plist_base);
+	xmlDocPtr plist_xml = xmlReadMemory(plist, strlen(plist), NULL, NULL, 0);
+
+	if (!plist_xml)
+		return NULL;
+
+	free(plist);
+
+	return plist_xml;
+}
+
+/** Destroys a previously created XML document.
+ *
+ * @param plist The XML document to destroy.
+ */
+void free_plist(xmlDocPtr plist)
+{
+	if (!plist)
+		return;
+
+	xmlFreeDoc(plist);
+}
+
+void node_to_xml(GNode * node, gpointer xml_struct)
+{
+	if (!node)
+		return;
+
+	struct xml_node *xstruct = (struct xml_node *) xml_struct;
+	struct plist_data *node_data = (struct plist_data *) node->data;
+
+	xmlNodePtr child_node = NULL;
+	char isStruct = FALSE;
+
+	gchar *tag = NULL;
+	gchar *val = NULL;
+
+	switch (node_data->type) {
+	case PLIST_BOOLEAN:
+		{
+			if (node_data->boolval)
+				tag = "true";
+			else
+				tag = "false";
+		}
+		break;
+
+	case PLIST_UINT:
+		tag = "integer";
+		val = g_strdup_printf("%lu", (long unsigned int) node_data->intval);
+		break;
+
+	case PLIST_REAL:
+		tag = "real";
+		val = g_strdup_printf("%Lf", (long double) node_data->realval);
+		break;
+
+	case PLIST_STRING:
+		tag = "string";
+		val = g_strdup(node_data->strval);
+		break;
+
+	case PLIST_UNICODE:
+		tag = "string";
+		val = g_strdup((gchar *) node_data->unicodeval);
+		break;
+
+	case PLIST_KEY:
+		tag = "key";
+		val = g_strdup((gchar *) node_data->strval);
+		break;
+
+	case PLIST_DATA:
+		tag = "data";
+		val = format_string(node_data->buff, 60, xstruct->depth);
+		break;
+	case PLIST_ARRAY:
+		tag = "array";
+		isStruct = TRUE;
+		break;
+	case PLIST_DICT:
+		tag = "dict";
+		isStruct = TRUE;
+		break;
+	case PLIST_DATE:			//TODO : handle date tag
+	default:
+		break;
+	}
+
+	int i = 0;
+	for (i = 0; i < xstruct->depth; i++) {
+		xmlNodeAddContent(xstruct->xml, "\t");
+	}
+	child_node = xmlNewChild(xstruct->xml, NULL, tag, val);
+	xmlNodeAddContent(xstruct->xml, "\n");
+	g_free(val);
+
+	//add return for structured types
+	if (node_data->type == PLIST_ARRAY || node_data->type == PLIST_DICT || node_data->type == PLIST_DATA)
+		xmlNodeAddContent(child_node, "\n");
+
+	if (isStruct) {
+		struct xml_node child = { child_node, xstruct->depth + 1 };
+		g_node_children_foreach(node, G_TRAVERSE_ALL, node_to_xml, &child);
+	}
+	//fix indent for structured types
+	if (node_data->type == PLIST_ARRAY || node_data->type == PLIST_DICT || node_data->type == PLIST_DATA) {
+
+		for (i = 0; i < xstruct->depth; i++) {
+			xmlNodeAddContent(child_node, "\t");
+		}
+	}
+
+	return;
+}
+
+void xml_to_node(xmlNodePtr xml_node, GNode * plist_node)
+{
+	xmlNodePtr node = NULL;
+
+	for (node = xml_node->children; node; node = node->next) {
+
+		while (node && !xmlStrcmp(node->name, "text"))
+			node = node->next;
+		if (!node)
+			break;
+
+		struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+		GNode *subnode = g_node_new(data);
+		g_node_append(plist_node, subnode);
+
+		if (!xmlStrcmp(node->name, "true")) {
+			data->boolval = 1;
+			data->type = PLIST_BOOLEAN;
+			continue;
+		}
+
+		if (!xmlStrcmp(node->name, "false")) {
+			data->boolval = 0;
+			data->type = PLIST_BOOLEAN;
+			continue;
+		}
+
+		if (!xmlStrcmp(node->name, "integer")) {
+			char *strval = xmlNodeGetContent(node);
+			data->intval = atoi(strval);
+			data->type = PLIST_UINT;
+			continue;
+		}
+
+		if (!xmlStrcmp(node->name, "real")) {
+			char *strval = xmlNodeGetContent(node);
+			data->realval = atof(strval);
+			data->type = PLIST_REAL;
+			continue;
+		}
+
+		if (!xmlStrcmp(node->name, "date"))
+			continue;			//TODO : handle date tag
+
+		if (!xmlStrcmp(node->name, "string")) {
+			data->strval = strdup(xmlNodeGetContent(node));
+			data->type = PLIST_STRING;
+			continue;
+		}
+
+		if (!xmlStrcmp(node->name, "key")) {
+			data->strval = strdup(xmlNodeGetContent(node));
+			data->type = PLIST_KEY;
+			continue;
+		}
+
+		if (!xmlStrcmp(node->name, "data")) {
+			data->buff = strdup(xmlNodeGetContent(node));
+			data->type = PLIST_DATA;
+			continue;
+		}
+
+		if (!xmlStrcmp(node->name, "array")) {
+			data->type = PLIST_ARRAY;
+			xml_to_node(node, subnode);
+			continue;
+		}
+
+		if (!xmlStrcmp(node->name, "dict")) {
+			data->type = PLIST_DICT;
+			xml_to_node(node, subnode);
+			continue;
+		}
+	}
+}
+
+void plist_to_xml(plist_t plist, char **plist_xml, uint32_t * length)
+{
+	if (!plist || !plist_xml || *plist_xml)
+		return;
+	xmlDocPtr plist_doc = new_plist();
+	xmlNodePtr root_node = xmlDocGetRootElement(plist_doc);
+	struct xml_node root = { root_node, 0 };
+	g_node_children_foreach(plist, G_TRAVERSE_ALL, node_to_xml, &root);
+	xmlDocDumpMemory(plist_doc, (xmlChar **) plist_xml, length);
+}
+
+void xml_to_plist(const char *plist_xml, uint32_t length, plist_t * plist)
+{
+	xmlDocPtr plist_doc = xmlReadMemory(plist_xml, length, NULL, NULL, 0);
+	xmlNodePtr root_node = xmlDocGetRootElement(plist_doc);
+
+	struct plist_data *data = (struct plist_data *) calloc(sizeof(struct plist_data), 1);
+	*plist = g_node_new(data);
+	data->type = PLIST_DICT;
+	xml_to_node(root_node, *plist);
+}