obexd/plugins/phonebook-dummy.c - vendor/opensource/bluez - Git at Google

 /*
  *
  *  OBEX Server
  *
  *  Copyright (C) 2009-2010  Intel Corporation
  *  Copyright (C) 2007-2010  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 <dirent.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <string.h>
 #include <glib.h>
 #include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <libical/ical.h>
 #include <libical/vobject.h>
 #include <libical/vcc.h>

 #include "obexd/src/log.h"
 #include "phonebook.h"

 typedef void (*vcard_func_t) (const char *file, VObject *vo, void *user_data);

 struct dummy_data {
 	phonebook_cb cb;
 	void *user_data;
 	const struct apparam_field *apparams;
 	char *folder;
 	int fd;
 	guint id;
 };

 struct cache_query {
 	phonebook_entry_cb entry_cb;
 	phonebook_cache_ready_cb ready_cb;
 	void *user_data;
 	DIR *dp;
 };

 static char *root_folder = NULL;

 static void dummy_free(void *user_data)
 {
 	struct dummy_data *dummy = user_data;

 	if (dummy->fd >= 0)
 		close(dummy->fd);

 	g_free(dummy->folder);
 	g_free(dummy);
 }

 static void query_free(void *user_data)
 {
 	struct cache_query *query = user_data;

 	if (query->dp)
 		closedir(query->dp);

 	g_free(query);
 }

 int phonebook_init(void)
 {
 	if (root_folder)
 		return 0;

 	/* FIXME: It should NOT be hard-coded */
 	root_folder = g_build_filename(getenv("HOME"), "phonebook", NULL);

 	return 0;
 }

 void phonebook_exit(void)
 {
 	g_free(root_folder);
 	root_folder = NULL;
 }

 static int handle_cmp(gconstpointer a, gconstpointer b)
 {
 	const char *f1 = a;
 	const char *f2 = b;
 	unsigned int i1, i2;

 	if (sscanf(f1, "%u.vcf", &i1) != 1)
 		return -1;

 	if (sscanf(f2, "%u.vcf", &i2) != 1)
 		return -1;

 	return (i1 - i2);
 }

 static int foreach_vcard(DIR *dp, vcard_func_t func, uint16_t offset,
 			uint16_t maxlistcount, void *user_data, uint16_t *count)
 {
 	struct dirent *ep;
 	GSList *sorted = NULL, *l;
 	VObject *v;
 	FILE *fp;
 	int err, fd, folderfd;
 	uint16_t n = 0;

 	folderfd = dirfd(dp);
 	if (folderfd < 0) {
 		err = errno;
 		error("dirfd(): %s(%d)", strerror(err), err);
 		return -err;
 	}

 	/*
 	 * Sorting vcards by file name. versionsort is a GNU extension.
 	 * The simple sorting function implemented on handle_cmp address
 	 * vcards handle only(handle is always a number). This sort function
 	 * doesn't address filename started by "0".
 	 */
 	while ((ep = readdir(dp))) {
 		char *filename;

 		if (ep->d_name[0] == '.')
 			continue;

 		filename = g_filename_to_utf8(ep->d_name, -1, NULL, NULL, NULL);
 		if (filename == NULL) {
 			error("g_filename_to_utf8: invalid filename");
 			continue;
 		}

 		if (!g_str_has_suffix(filename, ".vcf")) {
 			g_free(filename);
 			continue;
 		}

 		sorted = g_slist_insert_sorted(sorted, filename, handle_cmp);
 	}

 	/*
 	 * Filtering only the requested vCards attributes. Offset
 	 * shall be based on the first entry of the phonebook.
 	 */
 	for (l = g_slist_nth(sorted, offset);
 			l && n < maxlistcount; l = l->next) {
 		const char *filename = l->data;

 		fd = openat(folderfd, filename, O_RDONLY);
 		if (fd < 0) {
 			err = errno;
 			error("openat(%s): %s(%d)", filename, strerror(err), err);
 			continue;
 		}

 		fp = fdopen(fd, "r");
 		v = Parse_MIME_FromFile(fp);
 		if (v != NULL) {
 			func(filename, v, user_data);
 			deleteVObject(v);
 			n++;
 		}

 		close(fd);
 	}

 	g_slist_free_full(sorted, g_free);

 	if (count)
 		*count = n;

 	return 0;
 }

 static void entry_concat(const char *filename, VObject *v, void *user_data)
 {
 	GString *buffer = user_data;
 	char tmp[1024];
 	int len;

 	/*
 	 * VObject API uses len for IN and OUT
 	 * Written bytes is also returned in the len variable
 	 */
 	len = sizeof(tmp);
 	memset(tmp, 0, len);

 	writeMemVObject(tmp, &len, v);

 	/* FIXME: only the requested fields must be added */
 	g_string_append_len(buffer, tmp, len);
 }

 static gboolean read_dir(void *user_data)
 {
 	struct dummy_data *dummy = user_data;
 	GString *buffer;
 	DIR *dp;
 	uint16_t count = 0, max, offset;

 	buffer = g_string_new("");

 	dp = opendir(dummy->folder);
 	if (dp == NULL) {
 		int err = errno;
 		DBG("opendir(): %s(%d)", strerror(err), err);
 		goto done;
 	}

 	/*
 	 * For PullPhoneBook function, the decision of returning the size
 	 * or contacts is made in the PBAP core. When MaxListCount is ZERO,
 	 * PCE wants to know the size of a given folder, PSE shall ignore all
 	 * other applicattion parameters that may be present in the request.
 	 */
 	if (dummy->apparams->maxlistcount == 0) {
 		max = 0xffff;
 		offset = 0;
 	} else {
 		max = dummy->apparams->maxlistcount;
 		offset = dummy->apparams->liststartoffset;
 	}

 	foreach_vcard(dp, entry_concat, offset, max, buffer, &count);

 	closedir(dp);
 done:
 	/* FIXME: Missing vCards fields filtering */
 	dummy->cb(buffer->str, buffer->len, count, 0, TRUE, dummy->user_data);

 	g_string_free(buffer, TRUE);

 	return FALSE;
 }

 static void entry_notify(const char *filename, VObject *v, void *user_data)
 {
 	struct cache_query *query = user_data;
 	VObject *property, *subproperty;
 	GString *name;
 	const char *tel;
 	long unsigned int handle;

 	property = isAPropertyOf(v, VCNameProp);
 	if (!property)
 		return;

 	if (sscanf(filename, "%lu.vcf", &handle) != 1)
 		return;

 	if (handle > UINT32_MAX)
 		return;

 	/* LastName; FirstName; MiddleName; Prefix; Suffix */

 	name = g_string_new("");
 	subproperty = isAPropertyOf(property, VCFamilyNameProp);
 	if (subproperty) {
 		g_string_append(name,
 				fakeCString(vObjectUStringZValue(subproperty)));
 	}

 	subproperty = isAPropertyOf(property, VCGivenNameProp);
 	if (subproperty)
 		g_string_append_printf(name, ";%s",
 				fakeCString(vObjectUStringZValue(subproperty)));

 	subproperty = isAPropertyOf(property, VCAdditionalNamesProp);
 	if (subproperty)
 		g_string_append_printf(name, ";%s",
 				fakeCString(vObjectUStringZValue(subproperty)));

 	subproperty = isAPropertyOf(property, VCNamePrefixesProp);
 	if (subproperty)
 		g_string_append_printf(name, ";%s",
 				fakeCString(vObjectUStringZValue(subproperty)));


 	subproperty = isAPropertyOf(property, VCNameSuffixesProp);
 	if (subproperty)
 		g_string_append_printf(name, ";%s",
 				fakeCString(vObjectUStringZValue(subproperty)));

 	property = isAPropertyOf(v, VCTelephoneProp);

 	tel = property ? fakeCString(vObjectUStringZValue(property)) : NULL;

 	query->entry_cb(filename, handle, name->str, NULL, tel,
 							query->user_data);
 	g_string_free(name, TRUE);
 }

 static gboolean create_cache(void *user_data)
 {
 	struct cache_query *query = user_data;

 	/*
 	 * MaxListCount and ListStartOffset shall not be used
 	 * when creating the cache. All entries shall be fetched.
 	 * PBAP core is responsible for consider these application
 	 * parameters before reply the entries.
 	 */
 	foreach_vcard(query->dp, entry_notify, 0, 0xffff, query, NULL);

 	query->ready_cb(query->user_data);

 	return FALSE;
 }

 static gboolean read_entry(void *user_data)
 {
 	struct dummy_data *dummy = user_data;
 	char buffer[1024];
 	ssize_t count;

 	memset(buffer, 0, sizeof(buffer));
 	count = read(dummy->fd, buffer, sizeof(buffer));

 	if (count < 0) {
 		int err = errno;
 		error("read(): %s(%d)", strerror(err), err);
 		count = 0;
 	}

 	/* FIXME: Missing vCards fields filtering */

 	dummy->cb(buffer, count, 1, 0, TRUE, dummy->user_data);

 	return FALSE;
 }

 static gboolean is_dir(const char *dir)
 {
 	struct stat st;

 	if (stat(dir, &st) < 0) {
 		int err = errno;
 		error("stat(%s): %s (%d)", dir, strerror(err), err);
 		return FALSE;
 	}

 	return S_ISDIR(st.st_mode);
 }

 char *phonebook_set_folder(const char *current_folder,
 		const char *new_folder, uint8_t flags, int *err)
 {
 	gboolean root, child;
 	char *tmp1, *tmp2, *base, *absolute, *relative = NULL;
 	int len, ret = 0;

 	root = (g_strcmp0("/", current_folder) == 0);
 	child = (new_folder && strlen(new_folder) != 0);

 	switch (flags) {
 	case 0x02:
 		/* Go back to root */
 		if (!child) {
 			relative = g_strdup("/");
 			goto done;
 		}

 		relative = g_build_filename(current_folder, new_folder, NULL);
 		break;
 	case 0x03:
 		/* Go up 1 level */
 		if (root) {
 			/* Already root */
 			ret = -EBADR;
 			goto done;
 		}

 		/*
 		 * Removing one level of the current folder. Current folder
 		 * contains AT LEAST one level since it is not at root folder.
 		 * Use glib utility functions to handle invalid chars in the
 		 * folder path properly.
 		 */
 		tmp1 = g_path_get_basename(current_folder);
 		tmp2 = g_strrstr(current_folder, tmp1);
 		len = tmp2 - (current_folder + 1);

 		g_free(tmp1);

 		if (len == 0)
 			base = g_strdup("/");
 		else
 			base = g_strndup(current_folder, len);

 		/* Return: one level only */
 		if (!child) {
 			relative = base;
 			goto done;
 		}

 		relative = g_build_filename(base, new_folder, NULL);
 		g_free(base);

 		break;
 	default:
 		ret = -EBADR;
 		break;
 	}

 done:
 	if (!relative) {
 		if (err)
 			*err = ret;

 		return NULL;
 	}

 	absolute = g_build_filename(root_folder, relative, NULL);
 	if (!is_dir(absolute)) {
 		g_free(relative);
 		relative = NULL;
 		ret = -ENOENT;
 	}

 	g_free(absolute);

 	if (err)
 		*err = ret;

 	return relative;
 }

 void phonebook_req_finalize(void *request)
 {
 	struct dummy_data *dummy = request;

 	/* dummy_data will be cleaned when request will be finished via
 	 * g_source_remove */
 	if (dummy && dummy->id)
 		g_source_remove(dummy->id);
 }

 void *phonebook_pull(const char *name, const struct apparam_field *params,
 				phonebook_cb cb, void *user_data, int *err)
 {
 	struct dummy_data *dummy;
 	char *filename, *folder;

 	/*
 	 * Main phonebook objects will be created dinamically based on the
 	 * folder content. All vcards inside the given folder will be appended
 	 * in the "virtual" main phonebook object.
 	 */

 	filename = g_build_filename(root_folder, name, NULL);

 	if (!g_str_has_suffix(filename, ".vcf")) {
 		g_free(filename);
 		if (err)
 			*err = -EBADR;
 		return NULL;
 	}

 	folder = g_strndup(filename, strlen(filename) - 4);
 	g_free(filename);
 	if (!is_dir(folder)) {
 		g_free(folder);
 		if (err)
 			*err = -ENOENT;
 		return NULL;
 	}

 	dummy = g_new0(struct dummy_data, 1);
 	dummy->cb = cb;
 	dummy->user_data = user_data;
 	dummy->apparams = params;
 	dummy->folder = folder;
 	dummy->fd = -1;

 	if (err)
 		*err = 0;

 	return dummy;
 }

 int phonebook_pull_read(void *request)
 {
 	struct dummy_data *dummy = request;

 	if (!dummy)
 		return -ENOENT;

 	dummy->id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, read_dir, dummy,
 								dummy_free);

 	return 0;
 }

 void *phonebook_get_entry(const char *folder, const char *id,
 			const struct apparam_field *params, phonebook_cb cb,
 			void *user_data, int *err)
 {
 	struct dummy_data *dummy;
 	char *filename;
 	int fd;

 	filename = g_build_filename(root_folder, folder, id, NULL);

 	fd = open(filename, O_RDONLY);
 	if (fd < 0) {
 		DBG("open(): %s(%d)", strerror(errno), errno);
 		if (err)
 			*err = -ENOENT;
 		return NULL;
 	}

 	dummy = g_new0(struct dummy_data, 1);
 	dummy->cb = cb;
 	dummy->user_data = user_data;
 	dummy->apparams = params;
 	dummy->fd = fd;

 	dummy->id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, read_entry, dummy,
 								dummy_free);

 	if (err)
 		*err = 0;

 	return dummy;
 }

 void *phonebook_create_cache(const char *name, phonebook_entry_cb entry_cb,
 		phonebook_cache_ready_cb ready_cb, void *user_data, int *err)
 {
 	struct cache_query *query;
 	char *foldername;
 	DIR *dp;
 	struct dummy_data *dummy;

 	foldername = g_build_filename(root_folder, name, NULL);
 	dp = opendir(foldername);
 	g_free(foldername);

 	if (dp == NULL) {
 		DBG("opendir(): %s(%d)", strerror(errno), errno);
 		if (err)
 			*err = -ENOENT;
 		return NULL;
 	}

 	query = g_new0(struct cache_query, 1);
 	query->entry_cb = entry_cb;
 	query->ready_cb = ready_cb;
 	query->user_data = user_data;
 	query->dp = dp;

 	dummy = g_new0(struct dummy_data, 1);

 	dummy->id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, create_cache,
 							query, query_free);

 	if (err)
 		*err = 0;

 	return dummy;
 }
	/*
	*
	* OBEX Server
	*
	* Copyright (C) 2009-2010 Intel Corporation
	* Copyright (C) 2007-2010 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 <dirent.h>
	#include <errno.h>
	#include <stdio.h>
	#include <stdint.h>
	#include <string.h>
	#include <glib.h>
	#include <stdlib.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <fcntl.h>
	#include <unistd.h>
	#include <libical/ical.h>
	#include <libical/vobject.h>
	#include <libical/vcc.h>

	#include "obexd/src/log.h"
	#include "phonebook.h"

	typedef void (vcard_func_t) (const char file, VObject vo, void user_data);

	struct dummy_data {
	phonebook_cb cb;
	void *user_data;
	const struct apparam_field *apparams;
	char *folder;
	int fd;
	guint id;
	};

	struct cache_query {
	phonebook_entry_cb entry_cb;
	phonebook_cache_ready_cb ready_cb;
	void *user_data;
	DIR *dp;
	};

	static char *root_folder = NULL;

	static void dummy_free(void *user_data)
	{
	struct dummy_data *dummy = user_data;

	if (dummy->fd >= 0)
	close(dummy->fd);

	g_free(dummy->folder);
	g_free(dummy);
	}

	static void query_free(void *user_data)
	{
	struct cache_query *query = user_data;

	if (query->dp)
	closedir(query->dp);

	g_free(query);
	}

	int phonebook_init(void)
	{
	if (root_folder)
	return 0;

	/* FIXME: It should NOT be hard-coded */
	root_folder = g_build_filename(getenv("HOME"), "phonebook", NULL);

	return 0;
	}

	void phonebook_exit(void)
	{
	g_free(root_folder);
	root_folder = NULL;
	}

	static int handle_cmp(gconstpointer a, gconstpointer b)
	{
	const char *f1 = a;
	const char *f2 = b;
	unsigned int i1, i2;

	if (sscanf(f1, "%u.vcf", &i1) != 1)
	return -1;

	if (sscanf(f2, "%u.vcf", &i2) != 1)
	return -1;

	return (i1 - i2);
	}

	static int foreach_vcard(DIR *dp, vcard_func_t func, uint16_t offset,
	uint16_t maxlistcount, void user_data, uint16_t count)
	{
	struct dirent *ep;
	GSList sorted = NULL, l;
	VObject *v;
	FILE *fp;
	int err, fd, folderfd;
	uint16_t n = 0;

	folderfd = dirfd(dp);
	if (folderfd < 0) {
	err = errno;
	error("dirfd(): %s(%d)", strerror(err), err);
	return -err;
	}

	/*
	* Sorting vcards by file name. versionsort is a GNU extension.
	* The simple sorting function implemented on handle_cmp address
	* vcards handle only(handle is always a number). This sort function
	* doesn't address filename started by "0".
	*/
	while ((ep = readdir(dp))) {
	char *filename;

	if (ep->d_name[0] == '.')
	continue;

	filename = g_filename_to_utf8(ep->d_name, -1, NULL, NULL, NULL);
	if (filename == NULL) {
	error("g_filename_to_utf8: invalid filename");
	continue;
	}

	if (!g_str_has_suffix(filename, ".vcf")) {
	g_free(filename);
	continue;
	}

	sorted = g_slist_insert_sorted(sorted, filename, handle_cmp);
	}

	/*
	* Filtering only the requested vCards attributes. Offset
	* shall be based on the first entry of the phonebook.
	*/
	for (l = g_slist_nth(sorted, offset);
	l && n < maxlistcount; l = l->next) {
	const char *filename = l->data;

	fd = openat(folderfd, filename, O_RDONLY);
	if (fd < 0) {
	err = errno;
	error("openat(%s): %s(%d)", filename, strerror(err), err);
	continue;
	}

	fp = fdopen(fd, "r");
	v = Parse_MIME_FromFile(fp);
	if (v != NULL) {
	func(filename, v, user_data);
	deleteVObject(v);
	n++;
	}

	close(fd);
	}

	g_slist_free_full(sorted, g_free);

	if (count)
	*count = n;

	return 0;
	}

	static void entry_concat(const char filename, VObject v, void *user_data)
	{
	GString *buffer = user_data;
	char tmp[1024];
	int len;

	/*
	* VObject API uses len for IN and OUT
	* Written bytes is also returned in the len variable
	*/
	len = sizeof(tmp);
	memset(tmp, 0, len);

	writeMemVObject(tmp, &len, v);

	/* FIXME: only the requested fields must be added */
	g_string_append_len(buffer, tmp, len);
	}

	static gboolean read_dir(void *user_data)
	{
	struct dummy_data *dummy = user_data;
	GString *buffer;
	DIR *dp;
	uint16_t count = 0, max, offset;

	buffer = g_string_new("");

	dp = opendir(dummy->folder);
	if (dp == NULL) {
	int err = errno;
	DBG("opendir(): %s(%d)", strerror(err), err);
	goto done;
	}

	/*
	* For PullPhoneBook function, the decision of returning the size
	* or contacts is made in the PBAP core. When MaxListCount is ZERO,
	* PCE wants to know the size of a given folder, PSE shall ignore all
	* other applicattion parameters that may be present in the request.
	*/
	if (dummy->apparams->maxlistcount == 0) {
	max = 0xffff;
	offset = 0;
	} else {
	max = dummy->apparams->maxlistcount;
	offset = dummy->apparams->liststartoffset;
	}

	foreach_vcard(dp, entry_concat, offset, max, buffer, &count);

	closedir(dp);
	done:
	/* FIXME: Missing vCards fields filtering */
	dummy->cb(buffer->str, buffer->len, count, 0, TRUE, dummy->user_data);

	g_string_free(buffer, TRUE);

	return FALSE;
	}

	static void entry_notify(const char filename, VObject v, void *user_data)
	{
	struct cache_query *query = user_data;
	VObject property, subproperty;
	GString *name;
	const char *tel;
	long unsigned int handle;

	property = isAPropertyOf(v, VCNameProp);
	if (!property)
	return;

	if (sscanf(filename, "%lu.vcf", &handle) != 1)
	return;

	if (handle > UINT32_MAX)
	return;

	/* LastName; FirstName; MiddleName; Prefix; Suffix */

	name = g_string_new("");
	subproperty = isAPropertyOf(property, VCFamilyNameProp);
	if (subproperty) {
	g_string_append(name,
	fakeCString(vObjectUStringZValue(subproperty)));
	}

	subproperty = isAPropertyOf(property, VCGivenNameProp);
	if (subproperty)
	g_string_append_printf(name, ";%s",
	fakeCString(vObjectUStringZValue(subproperty)));

	subproperty = isAPropertyOf(property, VCAdditionalNamesProp);
	if (subproperty)
	g_string_append_printf(name, ";%s",
	fakeCString(vObjectUStringZValue(subproperty)));

	subproperty = isAPropertyOf(property, VCNamePrefixesProp);
	if (subproperty)
	g_string_append_printf(name, ";%s",
	fakeCString(vObjectUStringZValue(subproperty)));


	subproperty = isAPropertyOf(property, VCNameSuffixesProp);
	if (subproperty)
	g_string_append_printf(name, ";%s",
	fakeCString(vObjectUStringZValue(subproperty)));

	property = isAPropertyOf(v, VCTelephoneProp);

	tel = property ? fakeCString(vObjectUStringZValue(property)) : NULL;

	query->entry_cb(filename, handle, name->str, NULL, tel,
	query->user_data);
	g_string_free(name, TRUE);
	}

	static gboolean create_cache(void *user_data)
	{
	struct cache_query *query = user_data;

	/*
	* MaxListCount and ListStartOffset shall not be used
	* when creating the cache. All entries shall be fetched.
	* PBAP core is responsible for consider these application
	* parameters before reply the entries.
	*/
	foreach_vcard(query->dp, entry_notify, 0, 0xffff, query, NULL);

	query->ready_cb(query->user_data);

	return FALSE;
	}

	static gboolean read_entry(void *user_data)
	{
	struct dummy_data *dummy = user_data;
	char buffer[1024];
	ssize_t count;

	memset(buffer, 0, sizeof(buffer));
	count = read(dummy->fd, buffer, sizeof(buffer));

	if (count < 0) {
	int err = errno;
	error("read(): %s(%d)", strerror(err), err);
	count = 0;
	}

	/* FIXME: Missing vCards fields filtering */

	dummy->cb(buffer, count, 1, 0, TRUE, dummy->user_data);

	return FALSE;
	}

	static gboolean is_dir(const char *dir)
	{
	struct stat st;

	if (stat(dir, &st) < 0) {
	int err = errno;
	error("stat(%s): %s (%d)", dir, strerror(err), err);
	return FALSE;
	}

	return S_ISDIR(st.st_mode);
	}

	char phonebook_set_folder(const char current_folder,
	const char new_folder, uint8_t flags, int err)
	{
	gboolean root, child;
	char tmp1, tmp2, base, absolute, *relative = NULL;
	int len, ret = 0;

	root = (g_strcmp0("/", current_folder) == 0);
	child = (new_folder && strlen(new_folder) != 0);

	switch (flags) {
	case 0x02:
	/* Go back to root */
	if (!child) {
	relative = g_strdup("/");
	goto done;
	}

	relative = g_build_filename(current_folder, new_folder, NULL);
	break;
	case 0x03:
	/* Go up 1 level */
	if (root) {
	/* Already root */
	ret = -EBADR;
	goto done;
	}

	/*
	* Removing one level of the current folder. Current folder
	* contains AT LEAST one level since it is not at root folder.
	* Use glib utility functions to handle invalid chars in the
	* folder path properly.
	*/
	tmp1 = g_path_get_basename(current_folder);
	tmp2 = g_strrstr(current_folder, tmp1);
	len = tmp2 - (current_folder + 1);

	g_free(tmp1);

	if (len == 0)
	base = g_strdup("/");
	else
	base = g_strndup(current_folder, len);

	/* Return: one level only */
	if (!child) {
	relative = base;
	goto done;
	}

	relative = g_build_filename(base, new_folder, NULL);
	g_free(base);

	break;
	default:
	ret = -EBADR;
	break;
	}

	done:
	if (!relative) {
	if (err)
	*err = ret;

	return NULL;
	}

	absolute = g_build_filename(root_folder, relative, NULL);
	if (!is_dir(absolute)) {
	g_free(relative);
	relative = NULL;
	ret = -ENOENT;
	}

	g_free(absolute);

	if (err)
	*err = ret;

	return relative;
	}

	void phonebook_req_finalize(void *request)
	{
	struct dummy_data *dummy = request;

	/* dummy_data will be cleaned when request will be finished via
	* g_source_remove */
	if (dummy && dummy->id)
	g_source_remove(dummy->id);
	}

	void phonebook_pull(const char name, const struct apparam_field *params,
	phonebook_cb cb, void user_data, int err)
	{
	struct dummy_data *dummy;
	char filename, folder;

	/*
	* Main phonebook objects will be created dinamically based on the
	* folder content. All vcards inside the given folder will be appended
	* in the "virtual" main phonebook object.
	*/

	filename = g_build_filename(root_folder, name, NULL);

	if (!g_str_has_suffix(filename, ".vcf")) {
	g_free(filename);
	if (err)
	*err = -EBADR;
	return NULL;
	}

	folder = g_strndup(filename, strlen(filename) - 4);
	g_free(filename);
	if (!is_dir(folder)) {
	g_free(folder);
	if (err)
	*err = -ENOENT;
	return NULL;
	}

	dummy = g_new0(struct dummy_data, 1);
	dummy->cb = cb;
	dummy->user_data = user_data;
	dummy->apparams = params;
	dummy->folder = folder;
	dummy->fd = -1;

	if (err)
	*err = 0;

	return dummy;
	}

	int phonebook_pull_read(void *request)
	{
	struct dummy_data *dummy = request;

	if (!dummy)
	return -ENOENT;

	dummy->id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, read_dir, dummy,
	dummy_free);

	return 0;
	}

	void phonebook_get_entry(const char folder, const char *id,
	const struct apparam_field *params, phonebook_cb cb,
	void user_data, int err)
	{
	struct dummy_data *dummy;
	char *filename;
	int fd;

	filename = g_build_filename(root_folder, folder, id, NULL);

	fd = open(filename, O_RDONLY);
	if (fd < 0) {
	DBG("open(): %s(%d)", strerror(errno), errno);
	if (err)
	*err = -ENOENT;
	return NULL;
	}

	dummy = g_new0(struct dummy_data, 1);
	dummy->cb = cb;
	dummy->user_data = user_data;
	dummy->apparams = params;
	dummy->fd = fd;

	dummy->id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, read_entry, dummy,
	dummy_free);

	if (err)
	*err = 0;

	return dummy;
	}

	void phonebook_create_cache(const char name, phonebook_entry_cb entry_cb,
	phonebook_cache_ready_cb ready_cb, void user_data, int err)
	{
	struct cache_query *query;
	char *foldername;
	DIR *dp;
	struct dummy_data *dummy;

	foldername = g_build_filename(root_folder, name, NULL);
	dp = opendir(foldername);
	g_free(foldername);

	if (dp == NULL) {
	DBG("opendir(): %s(%d)", strerror(errno), errno);
	if (err)
	*err = -ENOENT;
	return NULL;
	}

	query = g_new0(struct cache_query, 1);
	query->entry_cb = entry_cb;
	query->ready_cb = ready_cb;
	query->user_data = user_data;
	query->dp = dp;

	dummy = g_new0(struct dummy_data, 1);

	dummy->id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, create_cache,
	query, query_free);

	if (err)
	*err = 0;

	return dummy;
	}