storage.c

这是Linux环境下的蓝牙源代码

	int i;

	memset(str, 0, sizeof(str));
	for (i = 0; i < 8; i++)
		sprintf(str + (i * 2), "%2.2X", features[i]);

	create_filename(filename, PATH_MAX, local, "features");

	create_file(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

	ba2str(peer, addr);
	return textfile_put(filename, addr, str);
}

int write_lastseen_info(bdaddr_t *local, bdaddr_t *peer, struct tm *tm)
{
	char filename[PATH_MAX + 1], addr[18], str[24];

	memset(str, 0, sizeof(str));
	strftime(str, sizeof(str), "%Y-%m-%d %H:%M:%S %Z", tm);

	create_filename(filename, PATH_MAX, local, "lastseen");

	create_file(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

	ba2str(peer, addr);
	return textfile_put(filename, addr, str);
}

int write_lastused_info(bdaddr_t *local, bdaddr_t *peer, struct tm *tm)
{
	char filename[PATH_MAX + 1], addr[18], str[24];

	memset(str, 0, sizeof(str));
	strftime(str, sizeof(str), "%Y-%m-%d %H:%M:%S %Z", tm);

	create_filename(filename, PATH_MAX, local, "lastused");

	create_file(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

	ba2str(peer, addr);
	return textfile_put(filename, addr, str);
}

int write_link_key(bdaddr_t *local, bdaddr_t *peer, unsigned char *key, uint8_t type, int length)
{
	char filename[PATH_MAX + 1], addr[18], str[38];
	int i;

	memset(str, 0, sizeof(str));
	for (i = 0; i < 16; i++)
		sprintf(str + (i * 2), "%2.2X", key[i]);
	sprintf(str + 32, " %d %d", type, length);

	create_filename(filename, PATH_MAX, local, "linkkeys");

	create_file(filename, S_IRUSR | S_IWUSR);

	ba2str(peer, addr);

	if (length < 0) {
		char *tmp = textfile_get(filename, addr);
		if (tmp) {
			if (strlen(tmp) > 34)
				memcpy(str + 34, tmp + 34, 3);
			free(tmp);
		}
	}

	return textfile_put(filename, addr, str);
}

int read_link_key(bdaddr_t *local, bdaddr_t *peer, unsigned char *key, uint8_t *type)
{
	char filename[PATH_MAX + 1], addr[18], tmp[3], *str;
	int i;

	create_filename(filename, PATH_MAX, local, "linkkeys");

	ba2str(peer, addr);
	str = textfile_get(filename, addr);
	if (!str)
		return -ENOENT;

	memset(tmp, 0, sizeof(tmp));
	for (i = 0; i < 16; i++) {
		memcpy(tmp, str + (i * 2), 2);
		key[i] = (uint8_t) strtol(tmp, NULL, 16);
	}

	if (type) {
		memcpy(tmp, str + 33, 2);
		*type = (uint8_t) strtol(tmp, NULL, 10);
	}

	free(str);

	return 0;
}

int read_pin_length(bdaddr_t *local, bdaddr_t *peer)
{
	char filename[PATH_MAX + 1], addr[18], *str;
	int len;

	create_filename(filename, PATH_MAX, local, "linkkeys");

	ba2str(peer, addr);
	str = textfile_get(filename, addr);
	if (!str)
		return -ENOENT;

	if (strlen(str) < 36) {
		free(str);
		return -ENOENT;
	}

	len = atoi(str + 35);

	free(str);

	return len;
}

int read_pin_code(bdaddr_t *local, bdaddr_t *peer, char *pin)
{
	char filename[PATH_MAX + 1], addr[18], *str;
	int len;

	create_filename(filename, PATH_MAX, local, "pincodes");

	ba2str(peer, addr);
	str = textfile_get(filename, addr);
	if (!str)
		return -ENOENT;

	strncpy(pin, str, 16);
	len = strlen(pin);

	free(str);

	return len;
}

static GSList *service_string_to_list(char *services)
{
	GSList *l = NULL;
	char *start = services;
	int i, finished = 0;

	for (i = 0; !finished; i++) {
		if (services[i] == '\0')
			finished = 1;

		if (services[i] == ' ' || services[i] == '\0') {
			services[i] = '\0';
			l = g_slist_append(l, start);
			start = services + i + 1;
		}
	}

	return l;
}

static char *service_list_to_string(GSList *services)
{
	char str[1024];
	int len = 0;

	if (!services)
		return g_strdup("");

	memset(str, 0, sizeof(str));

	while (services) {
		int ret;
		char *ident = services->data;

		ret = snprintf(str + len, sizeof(str) - len - 1, "%s%s",
				ident, services->next ? " " : "");

		if (ret > 0)
			len += ret;

		services = services->next;
	}

	return g_strdup(str);
}

int write_trust(bdaddr_t *local, const char *addr, const char *service,
		gboolean trust)
{
	char filename[PATH_MAX + 1], *str;
	GSList *services = NULL, *match;
	gboolean trusted;
	int ret;

	create_filename(filename, PATH_MAX, local, "trusts");

	create_file(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

	str = textfile_caseget(filename, addr);
	if (str)
		services = service_string_to_list(str);

	match = g_slist_find_custom(services, service, (GCompareFunc) strcmp);
	trusted = match ? TRUE : FALSE;

	/* If the old setting is the same as the requested one, we're done */
	if (trusted == trust) {
		g_slist_free(services);
		if (str)
			free(str);
		return 0;
	}

	if (trust)
		services = g_slist_append(services, (void *) service);
	else
		services = g_slist_remove(services, match->data);

	/* Remove the entry if the last trusted service was removed */
	if (!trust && !services)
		ret = textfile_casedel(filename, addr);
	else {
		char *new_str = service_list_to_string(services);
		ret = textfile_caseput(filename, addr, new_str);
		free(new_str);
	}

	g_slist_free(services);

	if (str)
		free(str);

	return ret;
}

gboolean read_trust(const bdaddr_t *local, const char *addr, const char *service)
{
	char filename[PATH_MAX + 1], *str;
	GSList *services;
	gboolean ret;

	create_filename(filename, PATH_MAX, local, "trusts");

	str = textfile_caseget(filename, addr);
	if (!str)
		return FALSE;

	services = service_string_to_list(str);

	if (g_slist_find_custom(services, service, (GCompareFunc) strcmp))
		ret = TRUE;
	else
		ret = FALSE;

	g_slist_free(services);
	free(str);

	return ret;
}

struct trust_list {
	GSList *trusts;
	const char *service;
};

static void append_trust(char *key, char *value, void *data)
{
	struct trust_list *list = data;

	if (strstr(value, list->service))
		list->trusts = g_slist_append(list->trusts, g_strdup(key));
}

GSList *list_trusts(bdaddr_t *local, const char *service)
{
	char filename[PATH_MAX + 1];
	struct trust_list list;

	create_filename(filename, PATH_MAX, local, "trusts");

	list.trusts = NULL;
	list.service = service;

	if (textfile_foreach(filename, append_trust, &list) < 0)
		return NULL;

	return list.trusts;
}

int write_device_profiles(bdaddr_t *src, bdaddr_t *dst, const char *profiles)
{
	char filename[PATH_MAX + 1], addr[18];

	if (!profiles)
		return -EINVAL;

	create_filename(filename, PATH_MAX, src, "profiles");

	create_file(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

	ba2str(dst, addr);
	return textfile_put(filename, addr, profiles);
}

int delete_entry(bdaddr_t *src, const char *storage, const char *key)
{
	char filename[PATH_MAX + 1];

	create_filename(filename, PATH_MAX, src, storage);

	return textfile_del(filename, key);
}

int store_record(const gchar *src, const gchar *dst, sdp_record_t *rec)
{
	char filename[PATH_MAX + 1], key[28];
	sdp_buf_t buf;
	int err, size, i;
	char *pdata, *str;

	create_name(filename, PATH_MAX, STORAGEDIR, src, "sdp");

	create_file(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

	snprintf(key, sizeof(key), "%17s#%08X", dst, rec->handle);

	if (sdp_gen_record_pdu(rec, &buf) < 0)
		return -1;

	pdata = (char *)buf.data;
	size = buf.data_size;

	str = g_malloc0(size*2+1);

	for (i = 0; i < size; i++)
		sprintf(str + (i * 2), "%02X", buf.data[i]);

	err = textfile_put(filename, key, str);

	free(buf.data);
	free(str);

	return err;
}

sdp_record_t *fetch_record(const gchar *src, const gchar *dst, const uint32_t handle)
{
	char filename[PATH_MAX + 1], key[28], tmp[3],*str;
	sdp_record_t *rec;
	int size, i, len;
	uint8_t *pdata;

	create_name(filename, PATH_MAX, STORAGEDIR, src, "sdp");

	snprintf(key, sizeof(key), "%17s#%08X", dst, handle);

	str = textfile_get(filename, key);

	if (!str)
		return NULL;

	size = strlen(str) / 2;
	pdata = g_malloc0(size);

	for (i = 0; i < size; i++) {
		memcpy(tmp, str + (i*2), 2);
		pdata[i] = (uint8_t) strtol(tmp, NULL, 16);
	}

	rec = sdp_extract_pdu(pdata, size, &len);

	free(str);
	free(pdata);

	return rec;
}

int delete_record(const gchar *src, const gchar *dst, const uint32_t handle)
{
	char filename[PATH_MAX + 1], key[28];

	create_name(filename, PATH_MAX, STORAGEDIR, src, "sdp");

	snprintf(key, sizeof(key), "%17s#%08X", dst, handle);

	return textfile_del(filename, key);
}