commit e98b56ff9bfa0283f2183f3e414173986906a2eb Author: jebba Date: Sat Jan 29 12:50:44 2022 -0700 uh oh diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..0e4b171 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +.~lock.*# +*.swp diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..8af77cc --- /dev/null +++ b/README.md @@ -0,0 +1,27 @@ +# Uh Oh +`uhoh` --- Notes, docs, scripts for Comma AI Three devkit. + + +Comma AI Three is hardware to connect to a vehicle for use with +open source `openpilot` AI for "self-driving" cars. + +* https://comma.ai/ + +* https://github.com/commaai/openpilot + + +# Docs +See `docs/` directory for more info. + + +# Unofficial +This repository, documentation and code is +unofficial, unaffiliated with Comma AI. + + +# License +GPLv3+. + + +Copyright (C) 2022, Jeff Moe + diff --git a/docs/HARDWARE.md b/docs/HARDWARE.md new file mode 100644 index 0000000..16c5f34 --- /dev/null +++ b/docs/HARDWARE.md @@ -0,0 +1,127 @@ +# Comma AI Comma Three Hardware +Eight core ARM 64 bit. + + +See also `docs/OS.md`. + +``` +root@tici:~# arch +aarch64 + +# Eight pretty ARM cores. +root@tici:~# cat /proc/cpuinfo +Processor : AArch64 Processor rev 12 (aarch64) +processor : 0 +BogoMIPS : 38.40 +Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp +CPU implementer : 0x51 +CPU architecture: 8 +CPU variant : 0x7 +CPU part : 0x803 +CPU revision : 12 + +... + +processor : 7 +BogoMIPS : 38.40 +Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp +CPU implementer : 0x51 +CPU architecture: 8 +CPU variant : 0x6 +CPU part : 0x802 +CPU revision : 13 + +Hardware : Qualcomm Technologies, Inc SDA845 + +root@tici:~# free -h + total used free shared buff/cache available +Mem: 3.5Gi 460Mi 2.5Gi 141Mi 597Mi 2.9Gi +Swap: 0B 0B 0B + + +root@tici:~# df -h +Filesystem Size Used Avail Use% Mounted on +/dev/root 9.8G 3.0G 6.3G 33% / +devtmpfs 1.7G 0 1.7G 0% /dev +tmpfs 1.8G 0 1.8G 0% /dev/shm +tmpfs 358M 40M 318M 12% /run +tmpfs 5.0M 4.0K 5.0M 1% /run/lock +tmpfs 1.8G 0 1.8G 0% /sys/fs/cgroup +tmpfs 150M 88K 150M 1% /tmp +tmpfs 128M 84M 45M 66% /var +/dev/sda10 12M 24K 11M 1% /systemrw +/dev/sda2 27M 24K 25M 1% /persist +/dev/sda12 30G 505M 28G 2% /data +/dev/sda11 108M 36K 99M 1% /cache +/dev/sde4 120M 43M 77M 36% /firmware +/dev/sde9 28M 20M 7.3M 73% /dsp +/dev/nvme0n1 916G 77M 870G 1% /data/media +overlay 150M 88K 150M 1% /home +tmpfs 358M 4.0K 358M 1% /run/user/1000 + +root@tici:~# lsusb +Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub +Bus 001 Device 003: ID bbaa:ddcc +Bus 001 Device 004: ID 2c7c:0125 Quectel Wireless Solutions Co., Ltd. EC25 LTE modem +Bus 001 Device 002: ID 0000:0000 +Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub +``` + +# Hard Drive +Has nice 1TB NVMe HD. That drive doesn't have a partition table. + +``` +root@tici:~# nvme list +Node SN Model Namespace Usage Format FW Rev +---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- -------- +/dev/nvme0n1 S64ANG0R513592B Samsung SSD 980 1TB 1 16.72 GB / 1.00 TB 512 B + 0 B 1B4QFXO7 + +root@tici:~# grep nvme /etc/fstab +/dev/nvme0n1 /data/media auto discard,nosuid,nodev,nofail,x-systemd.device-timeout=5s 0 0 + +root@tici:~# fdisk -l /dev/nvme0n1 +Disk /dev/nvme0n1: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors +Disk model: Samsung SSD 980 1TB +Units: sectors of 1 * 512 = 512 bytes +Sector size (logical/physical): 512 bytes / 512 bytes +I/O size (minimum/optimal): 512 bytes / 512 bytes + + +``` + + + + + +# Network + +``` +root@tici:~# ip a +1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 + link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 + inet 127.0.0.1/8 scope host lo + valid_lft forever preferred_lft forever + inet6 ::1/128 scope host + valid_lft forever preferred_lft forever +2: bond0: mtu 1500 qdisc noop state DOWN group default qlen 1000 + link/ether 2a:2e:60:dd:35:dd brd ff:ff:ff:ff:ff:ff +3: dummy0: mtu 1500 qdisc noop state DOWN group default qlen 1000 + link/ether fa:1f:5e:9b:5e:6b brd ff:ff:ff:ff:ff:ff +4: ip_vti0@NONE: mtu 1364 qdisc noop state DOWN group default qlen 1 + link/ipip 0.0.0.0 brd 0.0.0.0 +5: ip6_vti0@NONE: mtu 1500 qdisc noop state DOWN group default qlen 1 + link/tunnel6 :: brd :: +6: sit0@NONE: mtu 1480 qdisc noop state DOWN group default qlen 1 + link/sit 0.0.0.0 brd 0.0.0.0 +7: ip6tnl0@NONE: mtu 1452 qdisc noop state DOWN group default qlen 1 + link/tunnel6 :: brd :: +8: rmnet_ipa0: <> mtu 2000 qdisc noop state DOWN group default qlen 1000 + link/[530] +9: wwan0: mtu 1500 qdisc noop state DOWN group default qlen 1000 + link/none +10: wlan0: mtu 1500 qdisc mq state DOWN group default qlen 3000 + link/ether 00:0a:f5:e7:d1:93 brd ff:ff:ff:ff:ff:ff +11: p2p0: mtu 1500 qdisc noop state DOWN group default qlen 3000 + link/ether 02:0a:f5:6e:d1:93 brd ff:ff:ff:ff:ff:ff +``` + diff --git a/docs/LICENSE b/docs/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/docs/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + 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 3 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, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/docs/OS.md b/docs/OS.md new file mode 100644 index 0000000..effc481 --- /dev/null +++ b/docs/OS.md @@ -0,0 +1,90 @@ +# Operating System +This thing is running Ubuntu 20.04.3 fork, not Android (!). +Fork is named `AGNOS`. + + +## GNU Userspace +Built with GNU, like Ubuntu and Debian. + + +## Linux Kernel +``` +root@tici:~# uname -a +Linux tici 4.9.103+ #26 SMP PREEMPT Wed Dec 8 15:30:31 PST 2021 aarch64 aarch64 aarch64 Gx + +root@tici:~# dmesg -T # select lines from the dmesg: + +Linux version 4.9.103+ (batman@workstation-adeeb) (gcc version 8.2.1 20180802 (GNU Toolchain for the A-profile Architecture 8.2-2018-08 (arm-rel-8.23)) ) 1 + +Machine: Qualcomm Technologies, Inc. sda845 v2.1 TurboX-SOM_V01 + +efi: UEFI not found. + +# And what do they use for entropy? Old seeds? :) +random: fast init done + +# Kernel command line: +rcupdate.rcu_expedited=1 console=ttyMSM0,115200n8 earlycon=msm_geni_serial,0xA84000 androidboot.hardware=qcom androidboot.console=ttyMSM0 video=DSI-1:1080x2160@60e mdss_mdp.panel=0:dsi:0:dsi_ss_ea8074_fhd_cmd_display ehci-hcd.park=3 lpm_levels.sleep_disabled=1 service_locator.enable=1 androidboot.selinux=permissive firmware_class.path=/lib/firmware/updates net.ifnames=0 dyndbg="" root=/dev/sda6 androidboot.bootdevice=1d84000.ufshc androidboot.serialno=92d29dd androidboot.baseband=sda msm_drm.dsi_display0=dsi_fhd_ea8074_1080_cmd_display: androidboot.slot_suffix=_a skip_initramfs rootwait ro init=/sbin/init + +# Tainted kernel! +snd_soc_wcd9xxx: module verification failed: signature and/or required key missing - tainting kernel + +# Kernel Debug is on: +********************************************************** +** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** +** ** +** trace_printk() being used. Allocating extra memory. ** +** ** +** This means that this is a DEBUG kernel and it is ** +** unsafe for production use. ** +** ** +** If you see this message and you are not debugging ** +** the kernel, report this immediately to your vendor! ** +** ** +** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** +********************************************************** + +# Surely nothing could go wrong here.... +SELinux: Starting in permissive mode + +# nom +SMP: Total of 8 processors activated. + +Linux video capture interface: v2.00 +dmi: Firmware registration failed. +Advanced Linux Sound Architecture Driver Initialized. +Bluetooth: Core ver 2.22 +cpufreq: driver osm-cpufreq up and running +clk: clk_cpu_osm_driver_probe: OSM CPUFreq driver inited +reg-fixed-voltage 1.gpio-regulator: could not find pctldev for node /soc/qcom,spmi@c440000/qcom,pm8998@0/pinctrl@c000/camera_rear_dvdd_en/camera_rear_dvdd_ +en_default, deferring probe +reg-fixed-voltage 2.gpio-regulator: could not find pctldev for node /soc/qcom,spmi@c440000/qcom,pm8998@0/pinctrl@c000/camera_dvdd_en/camera_dvdd_en_default +, deferring probe + +SELinux: Registering netfilter hooks +... + +usbserial: USB Serial support registered for FTDI USB Serial Device +usbserial: USB Serial support registered for GSM modem (1-port) + +# Seems to have a lot of stuff in the kernel that isn't needed. + +ALSA device list: +No soundcards found. + +# But does it matter? +SELinux: unrecognized netlink message: protocol=0 nlmsg_type=106 sclass=netlink_route_socket pig=605 comm=systemd-network + +wlan: module is from the staging directory, the quality is unknown, you have been warned. + + +usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB0 +option 1-1.1:1.1: GSM modem (1-port) converter detected +usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB1 +option 1-1.1:1.2: GSM modem (1-port) converter detected +usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB2 +option 1-1.1:1.3: GSM modem (1-port) converter detected +usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB3 +qmi_wwan 1-1.1:1.4: cdc-wdm0: USB WDM device +``` + diff --git a/docs/PROPRIETARY.md b/docs/PROPRIETARY.md new file mode 100644 index 0000000..7ae306e --- /dev/null +++ b/docs/PROPRIETARY.md @@ -0,0 +1,29 @@ +# Proprietary Comma AI +The Comma AI appears at first to be quite "open", but it is built upon +a lot of proprietary infrastruction. For example, in the docs on using +`ssh` to access the device, step one: + +``` +1. You need a GitHub account. Make one if you don't already have one. +``` + +From: https://github.com/commaai/openpilot/wiki/SSH + + +So despite being "open", work will need to be done to use this device +without proprietary tools. I'm guessing this issue will be found throughout +the toolchain as I dig deeper. It already needs a libre fork. + + +Perhaps a list starting here of proprietary parts: + +* OpenSSH access to the device "needs" a Github account. + +* Development on Github. + +* Discord for chat. + +* SSH on the device uses Microsoft proxy. + +* Also has GSM device, doing who-knows-what. + diff --git a/docs/SEC.md b/docs/SEC.md new file mode 100644 index 0000000..02257fe --- /dev/null +++ b/docs/SEC.md @@ -0,0 +1,181 @@ +# Comma Three Security +Small notes on Comma Three security. + +# SSH Remote Access +It appears from their docs that most users connect to their device +using ssh with the hostname `ssh.comma.ai` which resolves to +`104.214.96.241`, with the whois record showing the owner as +`Microsoft Corporation (MSFT)`. + + +So basically the device phones home to Microsoft. + + +# SSH Keys +On the device, the root filesystem is mounted read-only. +There is a `/persist` directory that contains some SSH RSA +keys: + +``` +root@tici:~# date ; ls -Rl /persist/ +Sun 23 Jan 2022 02:30:39 AM UTC +/persist/: +total 4 +drwxrwxr-x 2 comma comma 4096 Jan 14 23:41 comma + +/persist/comma: +total 8 +-rw------- 1 comma comma 1679 Jan 14 23:41 id_rsa +-rw-rw-r-- 1 comma comma 451 Jan 14 23:41 id_rsa.pub +``` + +The keys were created before the device shipped, not on first +boot, if the file timestamp is correct. So that ssh key +is in cleartext through the supply chain. + +## Uh +Ok, this is perhaps even more absurd reading the docs: + +``` +1. Download the private key from the openpilot repo.. Save the key file as a text file and name it something like key.pem. +``` + +From: https://github.com/commaai/openpilot/wiki/SSH + + +That key: +https://raw.githubusercontent.com/commaai/openpilot/master/tools/ssh/id_rsa + +``` +-----BEGIN RSA PRIVATE KEY----- +MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQC+iXXq30Tq+J5N +Kat3KWHCzcmwZ55nGh6WggAqECa5CasBlM9VeROpVu3beA+5h0MibRgbD4DMtVXB +t6gEvZ8nd04E7eLA9LTZyFDZ7SkSOVj4oXOQsT0GnJmKrASW5KslTWqVzTfo2XCt +Z+004ikLxmyFeBO8NOcErW1pa8gFdQDToH9FrA7kgysic/XVESTOoe7XlzRoe/eZ +acEQ+jtnmFd21A4aEADkk00Ahjr0uKaJiLUAPatxs2icIXWpgYtfqqtaKF23wSt6 +1OTu6cAwXbOWr3m+IUSRUO0IRzEIQS3z1jfd1svgzSgSSwZ1Lhj4AoKxIEAIc8qJ +rO4uymCJAgMBAAECggEBAISFevxHGdoL3Z5xkw6oO5SQKO2GxEeVhRzNgmu/HA+q +x8OryqD6O1CWY4037kft6iWxlwiLOdwna2P25ueVM3LxqdQH2KS4DmlCx+kq6FwC +gv063fQPMhC9LpWimvaQSPEC7VUPjQlo4tPY6sTTYBUOh0A1ihRm/x7juKuQCWix +Cq8C/DVnB1X4mGj+W3nJc5TwVJtgJbbiBrq6PWrhvB/3qmkxHRL7dU2SBb2iNRF1 +LLY30dJx/cD73UDKNHrlrsjk3UJc29Mp4/MladKvUkRqNwlYxSuAtJV0nZ3+iFkL +s3adSTHdJpClQer45R51rFDlVsDz2ZBpb/hRNRoGDuECgYEA6A1EixLq7QYOh3cb +Xhyh3W4kpVvA/FPfKH1OMy3ONOD/Y9Oa+M/wthW1wSoRL2n+uuIW5OAhTIvIEivj +6bAZsTT3twrvOrvYu9rx9aln4p8BhyvdjeW4kS7T8FP5ol6LoOt2sTP3T1LOuJPO +uQvOjlKPKIMh3c3RFNWTnGzMPa0CgYEA0jNiPLxP3A2nrX0keKDI+VHuvOY88gdh +0W5BuLMLovOIDk9aQFIbBbMuW1OTjHKv9NK+Lrw+YbCFqOGf1dU/UN5gSyE8lX/Q +FsUGUqUZx574nJZnOIcy3ONOnQLcvHAQToLFAGUd7PWgP3CtHkt9hEv2koUwL4vo +ikTP1u9Gkc0CgYEA2apoWxPZrY963XLKBxNQecYxNbLFaWq67t3rFnKm9E8BAICi +4zUaE5J1tMVi7Vi9iks9Ml9SnNyZRQJKfQ+kaebHXbkyAaPmfv+26rqHKboA0uxA +nDOZVwXX45zBkp6g1sdHxJx8JLoGEnkC9eyvSi0C//tRLx86OhLErXwYcNkCf1it +VMRKrWYoXJTUNo6tRhvodM88UnnIo3u3CALjhgU4uC1RTMHV4ZCGBwiAOb8GozSl +s5YD1E1iKwEULloHnK6BIh6P5v8q7J6uf/xdqoKMjlWBHgq6/roxKvkSPA1DOZ3l +jTadcgKFnRUmc+JT9p/ZbCxkA/ALFg8++G+0ghECgYA8vG3M/utweLvq4RI7l7U7 +b+i2BajfK2OmzNi/xugfeLjY6k2tfQGRuv6ppTjehtji2uvgDWkgjJUgPfZpir3I +RsVMUiFgloWGHETOy0Qvc5AwtqTJFLTD1Wza2uBilSVIEsg6Y83Gickh+ejOmEsY +6co17RFaAZHwGfCFFjO76Q== +-----END RSA PRIVATE KEY----- +``` + +I don't get how this isn't a really bad idea. +A shared ssh private key to many systems, +shared publicly? + + +More ssh key fun: + +``` +root@tici:~# grep ssh_host_ /etc/ssh/sshd_config +HostKey /data/etc/ssh/ssh_host_rsa_key +HostKey /data/etc/ssh/ssh_host_dsa_key +HostKey /data/etc/ssh/ssh_host_ecdsa_key +HostKey /data/etc/ssh/ssh_host_ed25519_key +root@tici:~# ls -l /data/etc/ssh/ssh_host_* +-rw------- 1 root root 1373 Sep 7 18:37 /data/etc/ssh/ssh_host_dsa_key +-rw-r--r-- 1 root root 599 Sep 7 18:37 /data/etc/ssh/ssh_host_dsa_key.pub +-rw------- 1 root root 505 Sep 7 18:37 /data/etc/ssh/ssh_host_ecdsa_key +-rw-r--r-- 1 root root 171 Sep 7 18:37 /data/etc/ssh/ssh_host_ecdsa_key.pub +-rw------- 1 root root 399 Sep 7 18:37 /data/etc/ssh/ssh_host_ed25519_key +-rw-r--r-- 1 root root 91 Sep 7 18:37 /data/etc/ssh/ssh_host_ed25519_key.pub +-rw------- 1 root root 2590 Sep 7 18:37 /data/etc/ssh/ssh_host_rsa_key +-rw-r--r-- 1 root root 563 Sep 7 18:37 /data/etc/ssh/ssh_host_rsa_key.pub +``` + +Those keys were generated at factory. Shared? + +``` +root@tici:~# sha256sum /data/etc/ssh/ssh_host_* +27f51bad028a16a44570590feb04ef82f58d2be85fd617619f0586f2c73a62b6 /data/etc/ssh/ssh_host_dsa_key +66ed353232f9826b51a4c95590e1b9246b7dfd9ff642c6a5a54bfcc90fdd7519 /data/etc/ssh/ssh_host_dsa_key.pub +441b79400802b9a0947f93383cd83fb2a3ed67b0c12b12b9b98c5c3e444bdc7e /data/etc/ssh/ssh_host_ecdsa_key +9dfcbed0ddb3dcbc151375c96b4077ac401a97ea86d82953d178cbf92fe6cadc /data/etc/ssh/ssh_host_ecdsa_key.pub +d7e7b3256dcf3f8a334f6bd68c5bf37b29d102a2952deea9902f3ad9accce140 /data/etc/ssh/ssh_host_ed25519_key +6df70068291b69055c969cc721025cc78ec49b34f210b3496584a20a49df8100 /data/etc/ssh/ssh_host_ed25519_key.pub +ba8b445792f1216ab53cdf34bce275bce956387b0f9874f515500e30cfdfb361 /data/etc/ssh/ssh_host_rsa_key +750f22eb6d020497f5a1c846f48bde33c7efb55479217b95103a7ebdb1136414 /data/etc/ssh/ssh_host_rsa_key.pub +``` + + +# Listening +Listening TCP ports. + +``` +root@tici:~# netstat -pant +Active Internet connections (servers and established) +Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name +tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 3957/systemd-resolv +tcp 0 0 0.0.0.0:8022 0.0.0.0:* LISTEN 7655/sshd: /usr/sbi +tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 7655/sshd: /usr/sbi +tcp6 0 0 :::8022 :::* LISTEN 7655/sshd: /usr/sbi +tcp6 0 0 :::22 :::* LISTEN 7655/sshd: /usr/sbi + +# Looks like a local DNS resolver and ssh is listening on two ports: +root@tici:~# grep Port /etc/ssh/sshd_config +Port 8022 +Port 22 +``` + +Listening UDP. + +``` +root@tici:~# netstat -panu +Active Internet connections (servers and established) +Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name +udp 0 0 127.0.0.53:53 0.0.0.0:* 3957/systemd-resolv +udp 0 0 127.0.0.1:323 0.0.0.0:* 5508/chronyd +udp6 0 0 ::1:323 :::* 5508/chronyd +``` + +So local DNS resolver is listening for both tcp/udp and time sync +with `chrony`. + + +`IPv6` is in use. + + +# Filesystem + +``` +# /var filesystem is at 100%, maybe logfiles gone wild. +root@tici:~# df -h /var/ +Filesystem Size Used Avail Use% Mounted on +tmpfs 128M 128M 0 100% /var + +``` + +The `/var` mount does not appear to be just a temp mount, there +are old files there, e.g.: + +``` +root@tici:~# head /var/log/syslog.1 +Sep 7 18:37:27 tici kernel: [ 0.000000] Booting Linux on physical CPU 0x0 +``` + +# Random, or not? +Surely deterministic random numbers are secure? + +``` +root@tici:~# ls -l /var/lib/systemd/random-seed +-rw------- 1 root root 512 Sep 7 18:37 /var/lib/systemd/random-seed +``` + diff --git a/docs/SERIAL.md b/docs/SERIAL.md new file mode 100644 index 0000000..f65b159 --- /dev/null +++ b/docs/SERIAL.md @@ -0,0 +1,20 @@ +# Serial Access to Comma Three +Charge the device fully without booting it (e.g. as when ded). +I used Pine64 PinePower charger with USB-C. + + +Note, this device appears to be very sensitive to cable quality +and length. So far the only cable that has worked has been the +short thick USB-C cable that shipped with the unit. + + +``` +# USB device connects with serial FTDI. +# 115200 8N1, no flow control + +minicom -D /dev/ttyUSB0 +``` + +Root user is `comma`. Not sure what password is, but I logged in so +it was something easy if it is set. The `comma` has `sudo` access. +