Author: adminguy
//It’s 2024, and time for another Expo. On May 2nd, I was at the Robotics Summit & Expo at the Boston Convention and Exhibition Center. It was a fun expo, and I’d recommend anyone go if you get a chance. Price at the door was about $175, if I remember right.
//I recently went to PCBEast in Boxboro. I’ve uploaded a writeup, as well as included some pictures and videos to the git repo. Link: https://git.steakelectronics.com/adminguy/Electronics_Projects_2023
Some highlights from the expo include: Ultra-HDI pcb fabrication, Nasa’s component testing for space: INST-002, EMScan, custom flex pcbs, and $25,000 PCBs.
//This is from memory and my notes, and may be incomplete, or have errors, but regardless…
Power Cycle the phone.
Hit Cancel on Boot screen (you will see an option to cancel by hitting one of the menu buttons while it’s booting).
Press 1+3+5, hold them down. NOTE: there is also a function where you can hit 3+5+7. One of these is the right one. I think it’s 1+3+5, but if that doesn’t bring you to a password prompt, try 3+5+7.
A password prompt should appear.
The password is the mac address. That is the easy part. The mac is on the phone on a sticker. The hard part is that you must enter letters in lower case. You can’t preview the letters, and since you have only a number pad, you have to understand how these interfaces typically work.
What there is, is a small icon on the menu that lets you change from numbers to upper case letters, to lower case letter, then back to numbers. So in order to change from number to lower case, you have to hit that button on the screen. And also, if you change back to numbers, you must hit the button again. So sometimes you might have to blindly hit a few keys. E.g. cat would be 1+1+1 (for c), a short pause, then 1 (for a), then whatever t is. But you can’t see the a going from a to b to c. It’s all hidden behind hashmarks for “security”. So you are blind and must press the buttons in the correct sequence. Horrible design, but the idea must be that only IT guys will ever work with the interface. They should be used to getting the short end of the administration stick, so will not be surprised. I was not be surprised, to be honest, just disappointed.
Configuration for Verizon VOIP
After you put the password in, you can factory reset, or possibly it does a factory reset automatically. Now the VOIP phone is back to its base mode. When it reboots you can now access the admin section, with the password “456”. For Verizon’s voip, the settings are:
Go somewhere in the network menus (I didn’t note where).
Enable ZTP Server type - HTTPS Server address - https://tlcm.sipflash.com https://plcm.sipflash.com
Then I believe a reboot.
//This is a common problem for Prestashop as viewed on the https://github.com/PrestaShop/docker and Prestashop forums. Here’s some configurations I found necessary to handle this. I was able to get it working. First off, there are a few files you need to keep in mind: The DB has two tables: ps_shop_url, ps_ssl_enabled, which must be edited manually. The nginx.conf must have the right settings (they can be the same as a wordpress reverse proxy, so start there). And it was necessary to set $_SERVER[‘HTTPS’] = ‘on’; in the prestashop_root/config/ folder under one of the defines. I used defines_custom.inc.php. I understand this is not best practice, but I got it to work. Interested users should research where it’s best to put custom edits for Prestashop. Here’s quickly some more notes:
nginx.conf:
# shopping site redirect
server {
#server tokens hides the nginx identifying itself
server_tokens off;
server_name shop.mysite.com;
listen 80;
location ^~ /.well-known {
alias /var/www/html/.well-known/;
#autoindex on;
}
location / {
##** nginx redirect ALL http requests to https ** ##
return 301 https://$server_name$request_uri;
#from gist mentioned below
#rewrite ^ https://$host$request_uri? permanent;}
}server {
#server tokens hides the nginx identifying itself
server_tokens off;
server_name shop.mysite.com;
#listen 80;
listen 443 ssl;
ssl_certificate /etc/letsencrypt/live/mysite.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/mysite.com/privkey.pem;location / {
proxy_redirect off;
proxy_pass http://prestashop;#these were from wp, but not usable here, according to:
#https://gist.github.com/chroriginal/8d8ea7d284bcc42055a6ba18c04aeccf
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;#this was from gist, but doesn't work.
#proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
#proxy_set_header Host $http_host;
#proxy_set_header X-Forwarded-Proto https;
#from git issues tracker
proxy_connect_timeout 300;
proxy_send_timeout 300;
proxy_read_timeout 300;
send_timeout 300;}}
Here is the docker-compose.yml:
version: '3'
services:
nginx:
image: nginx:latest
container_name: production_nginx
volumes:
- ./nginx.conf:/etc/nginx/nginx.conf
- /etc/letsencrypt/:/etc/letsencrypt/
- ./webroot/:/var/www/html/
ports:
#be careful with these. Port 80 on container side must match nginx listen port. the host side port, is only for the docker proxy.
- 80:80
- 443:443
restart: always
# command: [nginx-debug, '-g', 'daemon off;']
db_prestashop:
image: mysql:5.7
environment:
- MYSQL_ROOT_PASSWORD=xxxxxx
- MYSQL_USER=xxxxxx
- MYSQL_PASSWORD=xxxxxx
- MYSQL_DATABASE=prestashop
volumes:
- ./db_data_presta:/var/lib/mysql
- ./db_conf_presta:/etc/mysql/
restart: always
prestashop:
depends_on:
- db_prestashop
image: 'prestashop/prestashop'
volumes:
- ./presta_root:/var/www/html/
environment:
- DB_SERVER=db_prestashop
- ADMIN_MAIL=xxxxxx
- ADMIN_PASSWD=xxxxxx
- VIRTUAL_HOST=https://URLHERE
- VIRTUAL_PORT=80
- PS_DOMAIN=https://URLHERE
- DB_NAME=prestashop
- DB_USER=xxxxxx
- DB_PASSWD=xxxxxx
restart=always
I don’t believe the DB_NAME or DB_USER variable is used in docker for prestashop. DB config is done at installation. Virtual host likewise, may not be necessary.
use prestashop
SELECT NAME, VALUE FROM ps_configuration WHERE NAME IN ('PS_SSL_ENABLED', 'PS_SSL_ENABLED_EVERYWHERE');
UPDATE ps_configuration SET VALUE = '1' WHERE NAME IN ('PS_SSL_ENABLED', 'PS_SSL_ENABLED_EVERYWHERE');
SELECT NAME, VALUE FROM ps_configuration WHERE NAME IN ('PS_SSL_ENABLED', 'PS_SSL_ENABLED_EVERYWHERE');
Also, one other change on the DB. You should ensure that your shop URL is set to be something like URL.com
You do NOT want https://URL.com in either domain or domain\_ssl in ps\_shop\_url
mysql> select * from ps_shop_url; +-------------+---------+--------------------------+--------------------------+--------------+-------------+------+--------+ | id_shop_url | id_shop | domain | domain_ssl | physical_uri | virtual_uri | main | active | +-------------+---------+--------------------------+--------------------------+--------------+-------------+------+--------+ | 1 | 1 | shop.steaky.com | shop.steaky.com | / | | 1 | 1 | +-------------+---------+--------------------------+--------------------------+--------------+-------------+------+--------+ 1 row in set (0.00 sec)
//Was setting up Firejail and MuPDF on Funtoo 1.3…
$ firejail mupdf sample.pdf Reading profile /etc/firejail/mupdf.profile Reading profile /etc/firejail/disable-common.inc Reading profile /etc/firejail/disable-devel.inc Reading profile /etc/firejail/disable-interpreters.inc Reading profile /etc/firejail/disable-passwdmgr.inc Reading profile /etc/firejail/disable-programs.inc Reading profile /etc/firejail/disable-xdg.inc Reading profile /etc/firejail/whitelist-var-common.inc Parent pid 31753, child pid 31754 Private /etc installed in 82.08 ms Blacklist violations are logged to syslog Child process initialized in 235.06 ms libGL error: failed to open drm device: Permission denied libGL error: failed to load driver: i965 libGL error: unable to load driver: swrast_dri.so libGL error: failed to load driver: swrast X Error of failed request: GLXBadContext Major opcode of failed request: 150 (GLX) Minor opcode of failed request: 6 (X_GLXIsDirect) Serial number of failed request: 36 Current serial number in output stream: 35 Parent is shutting down, bye...
After searching around online with other MuPDF issues (issues tracker, etc. I had some other ideas.
$strace firejail mupdf sample.pdf
setresuid(-1, 0, -1) = -1 EPERM (Operation not permitted)
setresgid(-1, 0, -1) = -1 EPERM (Operation not permitted)
unlink("/run/firejail/bandwidth/31761-bandwidth") = -1 ENOENT (No such file or directory)
unlink("/run/firejail/network/31761-netmap") = -1 ENOENT (No such file or directory)
unlink("/run/firejail/name/31761") = -1 ENOENT (No such file or directory)
unlink("/run/firejail/x11/31761") = -1 ENOENT (No such file or directory)
unlink("/run/firejail/profile/31761") = -1 ENOENT (No such file or directory)
setresuid(-1, 1000, -1) = 0
setresgid(-1, 1000, -1) = 0
getppid() = 31759
setresuid(-1, 0, -1) = -1 EPERM (Operation not permitted)
setresgid(-1, 0, -1) = -1 EPERM (Operation not permitted)
openat(AT_FDCWD, "/proc/31759/comm", O_RDONLY) = 3
read(3, "strace\n", 4095) = 7
close(3) = 0
setresuid(-1, 1000, -1) = 0
setresgid(-1, 1000, -1) = 0
getuid() = 1000
geteuid() = 1000
getuid() = 1000
geteuid() = 1000
getuid() = 1000
geteuid() = 1000
openat(AT_FDCWD, "/etc/firejail/firejail.config", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=4395, ...}) = 0
read(3, "# This is Firejail system-wide c"..., 4096) = 4096
read(3, " third dimension is\n# color dept"..., 4096) = 299
read(3, "", 4096) = 0
close(3) = 0
getuid() = 1000
geteuid() = 1000
getuid() = 1000
geteuid() = 1000
getuid() = 1000
geteuid() = 1000
getuid() = 1000
stat("/bin/bash/", 0x7ffe9b611270) = -1 ENOTDIR (Not a directory)
stat("/bin/bash", {st_mode=S_IFREG|0755, st_size=926688, ...}) = 0
access("/bin/bash", X_OK) = 0
getuid() = 1000
geteuid() = 1000
openat(AT_FDCWD, "/home/farm/.config/firejail", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = -1 ENOENT (No such
file or directory)
getuid() = 1000
geteuid() = 1000
openat(AT_FDCWD, "/etc/firejail", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0755, st_size=32768, ...}) = 0
getdents(3, /* 566 entries */, 32768) = 22808
getuid() = 1000
geteuid() = 1000
stat("/etc/firejail/mupdf.profile/", 0x7ffe9b60f0d0) = -1 ENOTDIR (Not a directory)
access("/etc/firejail/mupdf.profile", R_OK) = 0
openat(AT_FDCWD, "/etc/firejail/mupdf.profile", O_RDONLY) = 4
getpid() = 31761
setresuid(-1, 0, -1) = -1 EPERM (Operation not permitted)
setresgid(-1, 0, -1) = -1 EPERM (Operation not permitted)
openat(AT_FDCWD, "/run/firejail/profile/31761", O_WRONLY|O_CREAT|O_TRUNC, 0666) = -1 EACCES (Permission denied)
write(2, "Error: cannot create /run/fireja"..., 49Error: cannot create /run/firejail/profile/31761
) = 49
setresuid(-1, 0, -1) = -1 EPERM (Operation not permitted)
setresgid(-1, 0, -1) = -1 EPERM (Operation not permitted)
getpid() = 31761
unlink("/run/firejail/bandwidth/31761-bandwidth") = -1 ENOENT (No such file or directory)
unlink("/run/firejail/network/31761-netmap") = -1 ENOENT (No such file or directory)
unlink("/run/firejail/name/31761") = -1 ENOENT (No such file or directory)
unlink("/run/firejail/x11/31761") = -1 ENOENT (No such file or directory)
unlink("/run/firejail/profile/31761") = -1 ENOENT (No such file or directory)
exit_group(1) = ?
+++ exited with 1 +++
It looks like the error is:
write(2, “Error: cannot create /run/fireja”…, 49Error: cannot create /run/firejail/profile/31761
) = 49
Solution
In gentoo, the mupdf profile in /etc/firejail/has
# Firejail profile for mupdf
# Description: Lightweight PDF viewer
# This file is overwritten after every install/update
# Persistent local customizations
include /etc/firejail/mupdf.local
# Persistent global definitions
include /etc/firejail/globals.local
noblacklist ${DOCUMENTS}
include /etc/firejail/disable-common.inc
include /etc/firejail/disable-devel.inc
include /etc/firejail/disable-interpreters.inc
include /etc/firejail/disable-passwdmgr.inc
include /etc/firejail/disable-programs.inc
include /etc/firejail/disable-xdg.inc
include /etc/firejail/whitelist-var-common.inc
caps.drop all
machine-id
net none
nodbus
nodvd
nogroups
nonewprivs
noroot
nosound
notv
novideo
protocol unix
seccomp
# seccomp.keep
access,arch_prctl,brk,clone,close,connect,execve,exit_group,fchmod,fchown,fcntl,fstat,futex,getcwd,getpeername,getrlimit,getsock$
shell none
tracelog
# private-bin mupdf,sh,tempfile,rm
private-dev
private-etc fonts
private-tmp
# mupdf will never write anything
read-only ${HOME}
However, the private-etc fonts will cause this error. This was found by brute force troubleshooting (delete entries from profile, until it works).
Comment it out, and MuPDF should display correctly.
now you will get: $ firejail mupdf sample.pdf Reading profile /etc/firejail/mupdf.profile Reading profile /etc/firejail/disable-common.inc Reading profile /etc/firejail/disable-devel.inc Reading profile /etc/firejail/disable-interpreters.inc Reading profile /etc/firejail/disable-passwdmgr.inc Reading profile /etc/firejail/disable-programs.inc Reading profile /etc/firejail/disable-xdg.inc Reading profile /etc/firejail/whitelist-var-common.inc Parent pid 31763, child pid 31764 Blacklist violations are logged to syslog Child process initialized in 130.35 ms libGL error: failed to open drm device: Permission denied libGL error: failed to load driver: i965
and the PDF opens.