Custom Menu Options on Kterm

[jollyblondgiant]

Greetings,

Where are the options set for the menu that pops up with two fingers on kterm? I want to fire off a custom script, either when I do the two-finger tap or, safer, as an option sibling to “rotate screen” or “toggle keyboard” so that I can potentially ssh into a raspi I’m using for a kindle berry project without using the kindle’s keyboard. Is this possible? I’ve been looking through the repo for kterm and have not found where those menu options or their behavior might be set.

Eternally grateful,
JBG

[irreld]

This should get you started. Though you might want to spawn a shell first.

[jollyblondgiant]

Thanks for the suggestion! I’ve never coded in c, but this looks relatively straightforward. I plan to use system() to run ssh, but some forums recommend this might not be the best method. Do you have a suggestion for using ssh from within c? Also thanks for the suggestion to spawn a shell; I don’t write in c much, so excuse my ignorance but why would I need to spawn a shell, and what’s your favorite method for spawning one?

Thanks again,
JBG

[jollyblondgiant]

I'm at a loss here because I can't build kterm:

I updated the kterm.c file with the following code:

/* line 186, in between definitions for 'fontup' and 'fontdown' */
static void kindleberry(GtkWidget *widget, gpointer terminal) {
    UNUSED(widget);
    UNUSED(terminal);
    system("pi");
}
/* line 406, immediately after 
   GtkWidget *menu = gtk_menu_new();
*/
GtkWidget *kindleberry_item = gtk_menu_item_new_with_label("Kindleberry");
/* a few lines later, on line 416, right after
   GtkWidget *quit_item = gtk_menu_item_new_with_label("Quit");
*/
gtk_menu_shell_append(GTK_MENU_SHELL(menu), kindleberry_item);
/* and finally, line 427, right after
   gtk_menu_shell_append(GTK_MENU_SHELL(menu), quit_item);
*/  
g_signal_connect(G_OBJECT(kindleberry_item), "activate", G_CALLBACK(kindleberry), 
 (gpointer) terminal);

then following instructions on https://github.com/bfabiszewski/kterm the build process fails on

./configure

with:

No package 'vte' found

so I tried to install vte from https://github.com/GNOME/vte but that fails at

meson _build

with:

meson.build:137: WARNING: Consider using the built-in option for language standard version instead of using "-std=gnu11".
Compiler for C++ supports arguments -std=gnu++20: NO 

meson.build:144:0: ERROR: Assert failed: option -std=gnu++20 not supported by gcc

and my google-fu is not strong enough to find reference to or solution for this error. Does it refer to my OS? I am currently running Ubuntu 20.04.3 'Focal'. How do modern Ubuntu users compile C files? I just need the dozen lines of code injected into kterm.c; the command "pi" exists in my /usr/bin:

$ cat /usr/bin/pi
#!/bin/sh
echo "baking up some kindleberry pi"
eval $(ssh-agent -s)
ssh-add /rsa/kindleberry
ifconfig usb0 192.168.15.244
ssh pi@192.168.15.201

so that, as yet, all I have to do to get started is type "pi" into the built-in keyboard to set up the ssh-agent, my ssh-key, and connection, then poke with two fingers and hide the keyboard. If the "kindleberry" menu option fires the "pi" command on my kindle i hope it could do the same setup behavior so that I never need to type into the built-in keyboard.

However, I cannot install vte, and therefore cannot build kterm myself. If a wizard were to build

make dist-kindle

and send this lost novice the generated zip file, or alternatively help clear up the vte installation confustion, I'd be sincerely grateful.

[katadelos]

This sounds like an XY problem - if your goal is to autologin to the Pi, just pass your login script to kterm when it starts?

Try changing /mnt/us/extensions/kterm/bin/kterm.sh to something like this:

#!/bin/sh
EXTENSION=/mnt/us/extensions/kterm
DPI=`cat /var/log/Xorg.0.log | grep DPI | sed -n 's/.*(\([0-9]\+\), [0-9]\+).*/\1/p'`
#use different layouts for high resolution devices
if [ ${DPI} -gt 290 ]; then
  PARAM="-l ${EXTENSION}/layouts/keyboard-300dpi.xml"
elif [ ${DPI} -gt 200 ]; then
  PARAM="-l ${EXTENSION}/layouts/keyboard-200dpi.xml"
fi
export TERM=xterm TERMINFO=${EXTENSION}/vte/terminfo
${EXTENSION}/bin/kterm ${PARAM} -e "/usr/bin/pi" "$@"