Wireless access point daemon, patched with ubus support
fd63cf1558
When procd-ujail is available, 1f78538 runs hostapd as user "network", with only limited additional capabilities (CAP_NET_ADMIN and CAP_NET_RAW). hostapd_cli (CONFIG_PACKAGE_hostapd-utils) communicates with hostapd over a named UNIX-domain socket. hostapd_cli is responsible for creating this socket at /tmp/wpa_ctrl_$pid_$counter. Since it typically runs as root, this endpoint is normally created with uid root, gid root, mode 0755. As a result, hostapd running as uid network is able to receive control messages sent through this interface, but is not able to respond to them. If debug-level logging is enabled (CONFIG_WPA_MSG_MIN_PRIORITY <= 2 at build, and log_level <= 2 in /etc/config/wireless wifi-device), this message will appear from hostapd: CTRL: sendto failed: Permission denied As a fix, hostapd_cli should create the socket node in the filesystem with uid network, gid network, mode 0770. This borrows the presently Android-only strategy already in hostapd intended to solve the same problem on Android. If procd-ujail is not available and hostapd falls back to running as root, it will still be able to read from and write to the socket even if the node in the filesystem has been restricted to the network user and group. This matches the logic in package/network/services/hostapd/files/wpad.init, which sets the uid and gid of /var/run/hostapd to network regardless of whether procd-ujail is available. As it appears that the "network" user and group are statically allocated uid 101 and gid 101, respectively, per package/base-files/files/etc/passwd and USERID in package/network/services/hostapd/Makefile, this patch also uses a constant 101 for the uid and gid. |
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| doc | ||
| eap_example | ||
| hostapd | ||
| hs20 | ||
| radius_example | ||
| src | ||
| tests | ||
| wlantest | ||
| wpa_supplicant | ||
| wpadebug | ||
| wpaspy | ||
| .gitignore | ||
| Android.mk | ||
| build_release | ||
| CONTRIBUTIONS | ||
| COPYING | ||
| gen_compile_commands.py | ||
| README | ||
wpa_supplicant and hostapd -------------------------- Copyright (c) 2002-2024, Jouni Malinen <j@w1.fi> and contributors All Rights Reserved. These programs are licensed under the BSD license (the one with advertisement clause removed). If you are submitting changes to the project, please see CONTRIBUTIONS file for more instructions. This package may include either wpa_supplicant, hostapd, or both. See README file respective subdirectories (wpa_supplicant/README or hostapd/README) for more details. Source code files were moved around in v0.6.x releases and compared to earlier releases, the programs are now built by first going to a subdirectory (wpa_supplicant or hostapd) and creating build configuration (.config) and running 'make' there (for Linux/BSD/cygwin builds). License ------- This software may be distributed, used, and modified under the terms of BSD license: Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name(s) of the above-listed copyright holder(s) nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.