downloader: make cgi-script functional and add documentation

Signed-off-by: Robert C. Helling <helling@atdotde.de>

3 files changed, 1663 insertions, 12 deletions

diff --git a/packaging/headless/Setting-up-downloader b/packaging/headless/Setting-up-downloader
new file mode 100644
index 000000000..421b1ba6c
--- /dev/null
+++ b/packaging/headless/Setting-up-downloader
@@ -0,0 +1,47 @@
+How to set up a Raspberry Pi to use as a Subsurface downloader
+
+1) Get an image file for RaspianPi
+
+2) Set up your local network according to https://www.raspberrypi.org/documentation/configuration/wireless/headless.md
+You also need to create a file named "ssh" in the boot partition to enable the ssh server. Set the hostname to subsurfacepi
+
+3) apt-get install some more packages. On my pi, the packages listed in downloader_packages are installed, you can install them with
+sudo xargs -a downloader_packages apt install
+
+4) Clone the subsurface repository and build it as for any Debian based system: Run build.sh, then cd to the build directory, run
+ccamke .
+and select SUBSURFACE_TARGET_EXECUTABLE as DownloaderExecutable and make once more
+
+5) Add the following lines to /etc/apache2/sites-available/000-default.conf
+
+        ScriptAlias /pi-cgi-bin/ /home/pi/cgi-bin/
+        <Directory "/home/pi/cgi-bin">
+                AllowOverride None
+                Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
+                Order allow,deny
+                Require all granted
+        </Directory>
+        <Directory "/usr/lib/cgi-bin">
+                AllowOverride None
+                Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
+                Order allow,deny
+                Allow from all
+        </Directory>
+
+and restart apache2
+
+6) copy ~/src/subsurface/scripts/downloader.pl to /usr/lib/cgi-bin and run
+sudo chmod a+x /usr/lib/cgi-bin/downloader.pl
+It should then be there when you direct your browser to
+subsurfacepi.local/cgi-bin/downloader.pl
+
+7) Give the www user access to the serial interface
+sudo adduser pi dialout
+and restart apache2
+
+8) Create a directory to store the data
+sudo mkdir /opt/ssrf/
+sudo touch /opt/ssrf/ssrf.conf
+sudo chown -R www-data.www-data /opt/ssrf
+
+9) If you want to use the pi with an iPhone where the iPhone provides the internet connectivity, follow https://gist.github.com/antronic/157e047cdefa98b3150195c2eacb56b8
\ No newline at end of file
diff --git a/packaging/headless/downloader_packages b/packaging/headless/downloader_packages
new file mode 100644
index 000000000..ec0f1a692
--- /dev/null
+++ b/packaging/headless/downloader_packages
@@ -0,0 +1,1473 @@
+adduser
+adwaita-icon-theme
+agnostics
+alacarte
+alsa-utils
+apache2
+apache2-bin
+apache2-data
+apache2-utils
+apt
+apt-listchanges
+apt-utils
+arandr
+aspell
+aspell-en
+autoconf
+automake
+autotools-dev
+avahi-daemon
+base-files
+base-passwd
+bash
+bash-completion
+bind9-host
+binutils
+binutils-arm-linux-gnueabihf
+binutils-common:armhf
+blt
+bluealsa
+bluez
+bluez-firmware
+bsdmainutils
+bsdutils
+bubblewrap
+build-essential
+busybox
+bzip2
+ca-certificates
+chromium-browser
+chromium-browser-l10n
+chromium-codecs-ffmpeg-extra
+cifs-utils
+cmake
+cmake-curses-gui
+cmake-data
+console-setup
+console-setup-linux
+coreutils
+cpio
+cpp
+cpp-8
+crda
+cron
+curl
+dash
+dbus
+dbus-user-session
+dbus-x11
+dc
+dconf-gsettings-backend:armhf
+dconf-service
+debconf
+debconf-i18n
+debconf-utils
+debian-reference-common
+debian-reference-en
+debianutils
+debsums
+desktop-base
+desktop-file-utils
+device-tree-compiler
+dh-python
+dhcpcd5
+dictionaries-common
+diffutils
+dillo
+dirmngr
+distro-info-data
+dmidecode
+dmsetup
+docutils-common
+dosfstools
+dphys-swapfile
+dpkg
+dpkg-dev
+e2fsprogs
+ed
+eject
+emacsen-common
+ethtool
+fake-hwclock
+fakeroot
+fbset
+fdisk
+ffmpeg
+file
+findutils
+fio
+firmware-atheros
+firmware-brcm80211
+firmware-libertas
+firmware-misc-nonfree
+firmware-realtek
+flashrom
+fontconfig
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+fonts-droid-fallback
+fonts-freefont-ttf
+fonts-liberation2
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+galculator
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+libwnck-common
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+libxkbcommon-x11-0:armhf
+libxkbcommon0:armhf
+libxkbfile1:armhf
+libxklavier16:armhf
+libxml2:armhf
+libxml2-dev:armhf
+libxmu6:armhf
+libxmuu1:armhf
+libxpm4:armhf
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+libxres1:armhf
+libxshmfence1:armhf
+libxslt1-dev:armhf
+libxslt1.1:armhf
+libxss1:armhf
+libxt6:armhf
+libxtables12:armhf
+libxtst6:armhf
+libxv1:armhf
+libxvidcore4:armhf
+libxxf86dga1:armhf
+libxxf86vm1:armhf
+libyaml-0-2:armhf
+libzbar0:armhf
+libzip-dev:armhf
+libzip4:armhf
+libzmq5:armhf
+libzstd1:armhf
+libzvbi-common
+libzvbi0:armhf
+lightdm
+lightdm-gtk-greeter
+linux-base
+linux-libc-dev:armhf
+locales
+login
+logrotate
+lsb-base
+lsb-release
+lsof
+lua5.1
+luajit
+lxappearance
+lxappearance-obconf
+lxde
+lxde-common
+lxde-core
+lxde-icon-theme
+lxhotkey-core
+lxhotkey-gtk
+lxinput
+lxmenu-data
+lxpanel
+lxpanel-data
+lxplug-bluetooth
+lxplug-cputemp
+lxplug-ejecter
+lxplug-magnifier
+lxplug-network
+lxplug-ptbatt
+lxplug-volume
+lxpolkit
+lxrandr
+lxsession
+lxsession-data
+lxsession-edit
+lxsession-logout
+lxtask
+lxterminal
+m4
+make
+man-db
+manpages
+manpages-dev
+mawk
+menu-xdg
+mesa-va-drivers:armhf
+mesa-vdpau-drivers:armhf
+mime-support
+modemmanager
+mount
+mousepad
+multiarch-support
+mypy
+nano
+ncdu
+ncurses-base
+ncurses-bin
+ncurses-term
+net-tools
+netbase
+netcat-openbsd
+netcat-traditional
+nfs-common
+ntfs-3g
+obconf
+omxplayer
+openbox
+openbox-lxde-session
+openresolv
+openssh-client
+openssh-server
+openssh-sftp-server
+openssl
+packagekit
+parted
+passwd
+patch
+paxctld
+pciutils
+pcmanfm
+perl
+perl-base
+perl-modules-5.28
+pi-bluetooth
+pi-greeter
+pi-language-support
+pi-package
+pi-package-data
+pi-package-session
+piclone
+pigpio
+pigpio-tools
+pigpiod
+pigz
+pinentry-curses
+pipanel
+pishutdown
+piwiz
+pixflat-icons
+pkg-config
+plymouth
+plymouth-label
+plymouth-themes
+policykit-1
+poppler-data
+pprompt
+procps
+psmisc
+publicsuffix
+pylint3
+pypy
+pypy-lib:armhf
+python
+python-all
+python-all-dev
+python-apt-common
+python-asn1crypto
+python-automationhat
+python-blinker
+python-blinkt
+python-buttonshim
+python-cairo:armhf
+python-cap1xxx
+python-certifi
+python-cffi-backend
+python-chardet
+python-click
+python-colorama
+python-colorzero
+python-configparser
+python-cookies
+python-crypto
+python-cryptography
+python-dbus
+python-dev
+python-drumhat
+python-entrypoints
+python-enum34
+python-envirophat
+python-explorerhat
+python-flask
+python-fourletterphat
+python-funcsigs
+python-gi
+python-gobject-2
+python-gpiozero
+python-gtk2
+python-idna
+python-ipaddress
+python-itsdangerous
+python-jinja2
+python-jwt
+python-keyring
+python-keyrings.alt
+python-markupsafe
+python-microdotphat
+python-minimal
+python-mock
+python-mote
+python-motephat
+python-numpy
+python-oauthlib
+python-olefile
+python-openssl
+python-pantilthat
+python-pbr
+python-phatbeat
+python-pianohat
+python-picamera
+python-piglow
+python-pigpio
+python-pil:armhf
+python-pip
+python-pip-whl
+python-pkg-resources
+python-pygame
+python-pyinotify
+python-rainbowhat
+python-requests
+python-requests-oauthlib
+python-responses
+python-rpi.gpio
+python-rtimulib
+python-scrollphat
+python-scrollphathd
+python-secretstorage
+python-sense-hat
+python-serial
+python-setuptools
+python-simplejson
+python-six
+python-skywriter
+python-smbus:armhf
+python-sn3218
+python-spidev
+python-talloc:armhf
+python-tk
+python-touchphat
+python-twython
+python-unicornhathd
+python-urllib3
+python-werkzeug
+python-wheel
+python-xdg
+python2
+python2-dev
+python2-minimal
+python2.7
+python2.7-dev
+python2.7-minimal
+python3
+python3-apt
+python3-asn1crypto
+python3-astroid
+python3-asttokens
+python3-automationhat
+python3-blinker
+python3-blinkt
+python3-bs4
+python3-buttonshim
+python3-cap1xxx
+python3-certifi
+python3-cffi-backend
+python3-chardet
+python3-click
+python3-colorama
+python3-colorzero
+python3-cookies
+python3-crypto
+python3-cryptography
+python3-dbus
+python3-debconf
+python3-dev
+python3-distutils
+python3-docutils
+python3-drumhat
+python3-entrypoints
+python3-envirophat
+python3-explorerhat
+python3-flask
+python3-fourletterphat
+python3-gi
+python3-gpiozero
+python3-html5lib
+python3-idna
+python3-isort
+python3-itsdangerous
+python3-jedi
+python3-jinja2
+python3-jwt
+python3-keyring
+python3-keyrings.alt
+python3-lazy-object-proxy
+python3-lib2to3
+python3-logilab-common
+python3-lxml:armhf
+python3-markupsafe
+python3-mccabe
+python3-microdotphat
+python3-minimal
+python3-mote
+python3-motephat
+python3-mypy
+python3-mypy-extensions
+python3-numpy
+python3-oauthlib
+python3-olefile
+python3-openssl
+python3-pantilthat
+python3-parso
+python3-pgzero
+python3-phatbeat
+python3-pianohat
+python3-picamera
+python3-piglow
+python3-pigpio
+python3-pil:armhf
+python3-pip
+python3-pkg-resources
+python3-psutil
+python3-pygame
+python3-pygments
+python3-pyinotify
+python3-rainbowhat
+python3-requests
+python3-requests-oauthlib
+python3-responses
+python3-roman
+python3-rpi.gpio
+python3-rtimulib
+python3-scrollphat
+python3-scrollphathd
+python3-secretstorage
+python3-send2trash
+python3-sense-hat
+python3-serial
+python3-setuptools
+python3-simplejson
+python3-six
+python3-skywriter
+python3-smbus:armhf
+python3-sn3218
+python3-soupsieve
+python3-spidev
+python3-tk:armhf
+python3-touchphat
+python3-twython
+python3-typed-ast
+python3-unicornhathd
+python3-urllib3
+python3-venv
+python3-webencodings
+python3-werkzeug
+python3-wheel
+python3-wrapt
+python3-xdg
+python3.7
+python3.7-dev
+python3.7-minimal
+python3.7-venv
+qdoc-qt5
+qml-module-qtlocation:armhf
+qml-module-qtpositioning:armhf
+qml-module-qtquick2:armhf
+qpdfview
+qpdfview-djvu-plugin
+qpdfview-ps-plugin
+qpdfview-translations
+qt5-assistant
+qt5-default:armhf
+qt5-gtk-platformtheme:armhf
+qt5-qmake:armhf
+qt5-qmake-bin
+qt5-qmltooling-plugins:armhf
+qt5-style-plugins:armhf
+qt5ct
+qtbase5-dev:armhf
+qtbase5-dev-tools
+qtchooser
+qtconnectivity5-dev:armhf
+qtdeclarative5-dev:armhf
+qtdeclarative5-dev-tools
+qtdeclarative5-private-dev:armhf
+qtlocation5-dev
+qtpositioning5-dev:armhf
+qtscript5-dev:armhf
+qttools5-dev:armhf
+qttools5-dev-tools
+qttranslations5-l10n
+raspberrypi-artwork
+raspberrypi-bootloader
+raspberrypi-kernel
+raspberrypi-net-mods
+raspberrypi-sys-mods
+raspberrypi-ui-mods
+raspbian-archive-keyring
+raspi-config
+raspi-copies-and-fills
+raspi-gpio
+raspinfo
+rc-gui
+read-edid
+readline-common
+realvnc-vnc-server
+rfkill
+rng-tools
+rp-bookshelf
+rp-prefapps
+rpcbind
+rpd-plym-splash
+rpd-wallpaper
+rpi-chromium-mods
+rpi-eeprom
+rpi-update
+rpi.gpio-common:armhf
+rsync
+rsyslog
+samba-libs:armhf
+scrot
+sed
+sense-hat
+sensible-utils
+sgml-base
+shared-mime-info
+sound-theme-freedesktop
+ssh
+ssh-import-id
+ssl-cert
+strace
+sudo
+systemd
+systemd-sysv
+sysvinit-utils
+tar
+tasksel
+tasksel-data
+thonny
+timgm6mb-soundfont
+tk8.6-blt2.5
+traceroute
+tree
+triggerhappy
+tzdata
+ucf
+udev
+udisks2
+unzip
+usb-modeswitch
+usb-modeswitch-data
+usb.ids
+usbmuxd
+usbutils
+util-linux
+uuid
+v4l-utils
+va-driver-all:armhf
+vdpau-driver-all:armhf
+vim-common
+vim-tiny
+vl805fw
+vlc
+vlc-bin
+vlc-data
+vlc-l10n
+vlc-plugin-base:armhf
+vlc-plugin-notify:armhf
+vlc-plugin-qt:armhf
+vlc-plugin-samba:armhf
+vlc-plugin-skins2:armhf
+vlc-plugin-video-output:armhf
+vlc-plugin-video-splitter:armhf
+vlc-plugin-visualization:armhf
+wamerican
+wbritish
+wget
+whiptail
+wireless-regdb
+wireless-tools
+wiringpi
+wpasupplicant
+x11-common
+x11-utils
+x11-xkb-utils
+x11-xserver-utils
+x11proto-core-dev
+x11proto-dev
+x11proto-xext-dev
+xarchiver
+xauth
+xcompmgr
+xdg-dbus-proxy
+xdg-user-dirs
+xdg-utils
+xinit
+xinput
+xkb-data
+xml-core
+xorg-sgml-doctools
+xsel
+xserver-common
+xserver-xorg
+xserver-xorg-core
+xserver-xorg-input-all
+xserver-xorg-input-libinput
+xserver-xorg-video-fbdev
+xserver-xorg-video-fbturbo
+xtrans-dev
+xxd
+xz-utils
+zenity
+zenity-common
+zlib1g:armhf
+zlib1g-dev:armhf
diff --git a/scripts/downloader.pl b/scripts/downloader.pl
index d41854658..b15528229 100644
--- a/scripts/downloader.pl
+++ b/scripts/downloader.pl
@@ -1,6 +1,21 @@
-#!/usr/bin/perl
+#!/usr/bin/perl -w
+
+use strict;
 
 use CGI;
+use Git::Repository;
+
+# File to store cloud credentials
+my $config_file = "/opt/ssrf/ssrf.conf";
+# Where to store the git repository
+my $git_dir = "/opt/ssrf/gitdir";
+# Downloader binary
+my $downloader = "/home/pi/src/subsurface/build/subsurface-downloader";
+
+my %conf;
+
+# Use unbuffered output
+$| = 1;
 
 my $q = CGI->new;
 
@@ -8,32 +23,129 @@ print $q->header('text/html');
 print $q->img({src => 'https://subsurface-divelog.org/wp-content/uploads/2015/10/subsurface-icon1.png'});
 print $q->h1("Subsurface");
 
+printf "Reading config file $config_file\n";
+open CONF, $config_file || die "Cannot read $config_file:$!";
+while (<CONF>) {
+  if (/^\s*(\w+)\s*=\s*(\w.*)$/) {
+    $conf{$1} = $2;
+  }
+}
+close CONF;
+
 my %dcs;
 &load_supported_dcs;
 
 print $q->start_form();
-if ($q->param("Manufacturer")) {
+
+my $action = $q->param("action");
+
+if ($action eq "config") {
+
+  # Enter cloud credentials
+
+  print "Subsurface cloud user name (typically your email address): ", $q->textfield(-name => 'username', -default => $conf{username});
+  print "<br>Subsurface cloud password: ", $q->password_field(-name => "password");
+  &next_action("writeconfig");
+
+} elsif ($action eq "writeconfig") {
+
+  $conf{username} = $q->param("username");
+  $conf{username} =~ s/\s//g;
+  $conf{password} = $q->param("password");
+  $conf{password} =~ s/\s//g;
+  &write_conf;
+  &next_action("start");
+
+} elsif ($action eq "setmanufacturer") {
+
+  # Now we know the manufacturer, ask for model
+
   print $q->hidden(-name => "Manufacturer", -default => $q->param("Manufacturer"));
-  if ($q->param("Product")) {
-    print $q->hidden(-name => "Product", -default => $q->param("Product"));
-    opendir DIR, "/dev";
-    my @devices = map {"/dev/$_"} (grep {!/^\./} (readdir DIR));
-    closedir DIR;
-    print "Select mount point:";
-    print $q->popup_menu("Mount point", \@devices);
+  print "Select ",$q->param("Manufacturer")," model:";
+  print $q->popup_menu("Product", $dcs{$q->param("Manufacturer")});
+  &next_action("setproduct")
+    
+} elsif ($action eq "setproduct") {
+
+  # Now we know the model as well, ask for mount point
+
+  print $q->hidden(-name => "Manufacturer", -default => $q->param("Manufacturer"));
+  print $q->hidden(-name => "Product", -default => $q->param("Product"));
+
+  opendir DIR, "/dev";
+  my @devices = map {"/dev/$_"} (grep {!/^\./} (readdir DIR));
+  closedir DIR;
+  print "Select mount point:";
+  print $q->popup_menu(-name => "Mount point", -values => \@devices);
+  &next_action("startdownload");
+
+} elsif ($action eq "startdownload") {
+
+  # Do the actual download
+
+  my $repo;
+
+  # Does the repo exist?
+
+  if (-d $git_dir) {
+
+    # ... yes, pull latest version
+
+    $repo = Git::Repository->new( work_tree => $git_dir);
+    print "Pulling latest version from cloud.";
+    print $q->pre($repo->run("pull"));
   } else {
-    print "Select ",$q->param("Manufacturer")," model:";
-    print $q->popup_menu("Product", $dcs{$q->param("Manufacturer")});
+
+    # ... no, clone it
+
+    my $en_username = $conf{username};
+
+    # We need to escape the @ in the username to be able to encode it in the URL.
+    # Note: If we fail, the password gets written to /var/log/apache/error.log,
+    # Maybe there is a better way to pass the password to git...
+    
+    $en_username =~ s/\@/%40/g;
+    my $git_url = 'https://' . $en_username . ':' . $conf{password} . '@cloud.subsurface-divelog.org//git/' . $conf{username};
+    print "Cloning repository";
+    print $q->pre(Git::Repository->run( clone => $git_url, $git_dir));
+    $repo = Git::Repository->new( work_tree => $git_dir );
   }
+
+  # Assemble the command with all arguments
+  
+  my $command = "$downloader --dc-vendor=" . $q->param('Manufacturer') .
+		" --dc-product=" . $q->param('Product') .
+		" --device=" . $q->param("Mount point") .
+		' ' . $git_dir .
+		'/[' . $conf{username} . ']';
+  print $q->pre($command);
+
+  # ... and run it
+  
+  print $q->pre(`$command`);
+
+  # Push back to the cloud
+  
+  print "Checkout user branch";
+  print $q->pre($repo->run("checkout", $conf{username}));
+  print "Push changes to cloud";
+  print $q->pre($repo->run("push", "origin", $conf{username}));
+  &next_action("start");
 } else {
+
+  # This is the mode we start up in
+  
   print "Select dive computer manufacturer:";
   print $q->popup_menu("Manufacturer", [sort keys %dcs]);
+  &next_action("setmanufacturer")
 }
 
-print $q->submit();
 
+print $q->br(),$q->submit(-name => "  OK  ");
 print $q->end_form();
 
+print $q->br(), $q->a({-href => $q->url() . "?action=config"}, "Configure cloud credentials");
+
 sub load_supported_dcs {
   open IN, "/home/pi/src/subsurface/build/subsurface-downloader --list-dc|";
   
@@ -51,3 +163,22 @@ sub load_supported_dcs {
   close IN;
 }
 
+
+sub write_conf {
+  print "Writing config file\n";
+  open CONFW, ">$config_file" || die "Cannot write $config_file:$!";
+  foreach my $key (keys %conf) {
+    print CONFW "$key = $conf{$key}\n";
+  }
+  close CONFW;
+  print "Done\n";
+}
+
+sub next_action {
+  my $next = shift;
+  $q->param(action => $next);
+  print $q->hidden(
+		   -name => "action",
+		   -value => $next);
+  return;
+}