diff options
Diffstat (limited to 'input/storage.c')
| -rw-r--r-- | input/storage.c | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/input/storage.c b/input/storage.c new file mode 100644 index 00000000..25894a5b --- /dev/null +++ b/input/storage.c @@ -0,0 +1,364 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2004-2008 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 <stdio.h> +#include <errno.h> +#include <ctype.h> +#include <fcntl.h> +#include <unistd.h> +#include <stdlib.h> +#include <sys/file.h> +#include <sys/stat.h> +#include <sys/param.h> +#include <sys/ioctl.h> +#include <sys/socket.h> + +#include <bluetooth/bluetooth.h> +#include <bluetooth/hidp.h> +#include <bluetooth/hci.h> +#include <bluetooth/hci_lib.h> + +#include <glib.h> + +#include "logging.h" +#include "textfile.h" + +#include "storage.h" + +static inline int create_filename(char *buf, size_t size, + bdaddr_t *bdaddr, const char *name) +{ + char addr[18]; + + ba2str(bdaddr, addr); + + return create_name(buf, size, STORAGEDIR, addr, name); +} + +int parse_stored_hidd(const char *str, struct hidp_connadd_req *req) +{ + char tmp[3]; + char *desc; + unsigned int vendor, product, version, subclass, country, parser, pos; + int i; + + desc = malloc(4096); + if (!desc) + return -ENOMEM; + + memset(desc, 0, 4096); + + sscanf(str, "%04X:%04X:%04X %02X %02X %04X %4095s %08X %n", + &vendor, &product, &version, &subclass, &country, + &parser, desc, &req->flags, &pos); + + req->vendor = vendor; + req->product = product; + req->version = version; + req->subclass = subclass; + req->country = country; + req->parser = parser; + + req->rd_size = strlen(desc) / 2; + req->rd_data = g_try_malloc0(req->rd_size); + if (!req->rd_data) { + g_free(desc); + return -ENOMEM; + } + + memset(tmp, 0, sizeof(tmp)); + for (i = 0; i < req->rd_size; i++) { + memcpy(tmp, desc + (i * 2), 2); + req->rd_data[i] = (uint8_t) strtol(tmp, NULL, 16); + } + + g_free(desc); + + return 0; +} + +int parse_stored_device_info(const char *str, struct hidp_connadd_req *req) +{ + char tmp[3]; + const char *desc; + unsigned int vendor, product, version, subclass, country, parser, pos; + size_t len; + int i; + + sscanf(str, "%04X:%04X:%04X %02X %02X %04X %08X %n", + &vendor, &product, &version, &subclass, &country, + &parser, &req->flags, &pos); + + desc = &str[pos]; + len = strlen(desc); + if (len <= 0) + return -ENOENT; + + req->vendor = vendor; + req->product = product; + req->version = version; + req->subclass = subclass; + req->country = country; + req->parser = parser; + + req->rd_size = len / 2; + req->rd_data = g_try_malloc0(req->rd_size); + if (!req->rd_data) { + return -ENOMEM; + } + + memset(tmp, 0, sizeof(tmp)); + for (i = 0; i < req->rd_size; i++) { + memcpy(tmp, desc + (i * 2), 2); + req->rd_data[i] = (uint8_t) strtol(tmp, NULL, 16); + } + + return 0; +} + +int get_stored_device_info(bdaddr_t *src, bdaddr_t *dst, + struct hidp_connadd_req *req) +{ + char filename[PATH_MAX + 1], *str; + char peer[18]; + int err; + + create_filename(filename, PATH_MAX, src, "input"); + + ba2str(dst, peer); + str = textfile_get(filename, peer); + if (!str) + return -ENOENT; + + err = parse_stored_device_info(str, req); + + free(str); + + return err; +} + +int del_stored_device_info(bdaddr_t *src, bdaddr_t *dst) +{ + char filename[PATH_MAX + 1]; + char addr[18]; + + ba2str(dst, addr); + + create_filename(filename, PATH_MAX, src, "hidd"); + textfile_del(filename, addr); + + create_filename(filename, PATH_MAX, src, "input"); + return textfile_del(filename, addr); +} + +int store_device_info(bdaddr_t *src, bdaddr_t *dst, struct hidp_connadd_req *req) +{ + char filename[PATH_MAX + 1], *str, *desc; + int i, err, size; + char addr[18]; + + create_filename(filename, PATH_MAX, src, "input"); + + size = 15 + 3 + 3 + 5 + (req->rd_size * 2) + 2 + 9; + str = g_try_malloc0(size); + if (!str) + return -ENOMEM; + + desc = g_try_malloc0((req->rd_size * 2) + 1); + if (!desc) { + g_free(str); + return -ENOMEM; + } + + for (i = 0; i < req->rd_size; i++) + sprintf(desc + (i * 2), "%2.2X", req->rd_data[i]); + + snprintf(str, size - 1, "%04X:%04X:%04X %02X %02X %04X %08X %s", + req->vendor, req->product, req->version, + req->subclass, req->country, req->parser, + req->flags, desc); + + g_free(desc); + + create_file(filename, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); + + ba2str(dst, addr); + + err = textfile_put(filename, addr, str); + + g_free(str); + + return err; +} + +int read_device_name(bdaddr_t *src, bdaddr_t *dst, char **name) +{ + char filename[PATH_MAX + 1], addr[18], *str; + int len; + + create_filename(filename, PATH_MAX, src, "names"); + + ba2str(dst, addr); + str = textfile_get(filename, addr); + if (!str) + return -ENOENT; + + len = strlen(str); + + /* HID max name size is 128 chars */ + if (len < 128) { + *name = str; + return 0; + } + + *name = g_try_malloc0(128); + if (!*name) + return -ENOMEM; + + snprintf(*name, 128, "%s", str); + + free(str); + + return 0; +} + +int read_device_class(bdaddr_t *src, bdaddr_t *dst, uint32_t *cls) +{ + char filename[PATH_MAX + 1], *str; + char addr[18]; + + ba2str(src, addr); + create_name(filename, PATH_MAX, STORAGEDIR, addr, "classes"); + + ba2str(dst, addr); + str = textfile_get(filename, addr); + if (!str) + return -ENOENT; + + if (sscanf(str, "%x", cls) != 1) { + g_free(str); + return -ENOENT; + } + + g_free(str); + + return 0; +} + +int encrypt_link(bdaddr_t *src, bdaddr_t *dst) +{ + char filename[PATH_MAX + 1]; + struct hci_conn_info_req *cr; + int dd, err, dev_id; + char addr[18], *str; + + create_filename(filename, PATH_MAX, src, "linkkeys"); + + ba2str(dst, addr); + + str = textfile_get(filename, addr); + if (!str) { + error("Encryption link key not found"); + return -ENOKEY; + } + + free(str); + + cr = g_try_malloc0(sizeof(*cr) + sizeof(struct hci_conn_info)); + if (!cr) + return -ENOMEM; + + ba2str(src, addr); + + dev_id = hci_devid(addr); + if (dev_id < 0) { + g_free(cr); + return -errno; + } + + dd = hci_open_dev(dev_id); + if (dd < 0) { + g_free(cr); + return -errno; + } + + bacpy(&cr->bdaddr, dst); + cr->type = ACL_LINK; + + if (ioctl(dd, HCIGETCONNINFO, (unsigned long) cr) < 0) + goto fail; + + if (cr->conn_info->link_mode & HCI_LM_ENCRYPT) { + /* Already encrypted */ + goto done; + } + + if (hci_authenticate_link(dd, htobs(cr->conn_info->handle), 1000) < 0) { + error("Link authentication failed: %s (%d)", + strerror(errno), errno); + goto fail; + } + + if (hci_encrypt_link(dd, htobs(cr->conn_info->handle), 1, 1000) < 0) { + error("Link encryption failed: %s (%d)", + strerror(errno), errno); + goto fail; + } + +done: + g_free(cr); + + hci_close_dev(dd); + + return 0; + +fail: + g_free(cr); + + err = errno; + hci_close_dev(dd); + + return -err; +} + +gboolean has_bonding(bdaddr_t *src, bdaddr_t *dst) +{ + char filename[PATH_MAX + 1]; + char addr[18], *str; + + create_filename(filename, PATH_MAX, src, "linkkeys"); + + ba2str(dst, addr); + + str = textfile_get(filename, addr); + if (!str) + return FALSE; + + free(str); + + return TRUE; +} |