From 68860766c4de8ee7897004d613d18c9a582e4fd0 Mon Sep 17 00:00:00 2001
From: Digital  Studium <digitalstudium001@gmail.com>
Date: Wed, 24 Apr 2024 20:40:49 +0300
Subject: [PATCH]  Add debug key binding

---
 README.md |   1 +
 a.out     | Bin 0 -> 18248 bytes
 ccc.c     | 200 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 kls       |   1 +
 4 files changed, 202 insertions(+)
 create mode 100755 a.out
 create mode 100644 ccc.c

diff --git a/README.md b/README.md
index 9834585..9ca6231 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ It is lightweight and easy to customize
 - `3` - edit resource 
 - `4` - logs of pod
 - `5` - exec to pod
+- `6` - network debug of pod (with nicolaka/netshoot container attached)
 - `delete` - delete resource
 
 You can customize these bindings or add extra bindings in `KEY_BINDINGS` variable of `kls` (in a row #6).
diff --git a/a.out b/a.out
new file mode 100755
index 0000000000000000000000000000000000000000..c6a6ac726509f34e4bd5d24680789fb28ad541f5
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diff --git a/ccc.c b/ccc.c
new file mode 100644
index 0000000..31b01cd
--- /dev/null
+++ b/ccc.c
@@ -0,0 +1,200 @@
+/*
+ * This is a simple example of "scrolling" form with ncurses.
+ * It use "page" to allow forms with more fields than your window can print.
+ *
+ * It prints a "label" (inactive field) and a regular field and let you
+ * "scroll" pages of the form.
+ *
+ * How to compile:
+ *	gcc -o test scrolling_form.c -lform -lncurses
+ */
+
+#include <ncurses/form.h> // this includes <ncurses.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+WINDOW *wbody, *inner;
+FIELD **field;
+FORM *form;
+
+int nb_field; // how many fields you want (modify it in main())
+int cur_y = 1, cur_x = 1; // current y and x for the inner window
+char str_label[7], str_field[6];
+char cur_ch_label = 'A', cur_ch_field = 'a';
+int lines = 21, cur_page = 0;
+
+/*
+
++----------------------------------+ <-- wbody
+|+--------------------------------+ <-- inner
+||  ^                             ||
+||  |                             ||
+||  |                             ||
+||  |                             ||
+||  | lines                       ||
+||  |                             ||
+||  |                             ||
+||  |                             ||
+||  v                             ||
+|+--------------------------------+|
++----------------------------------+
+
+*/
+
+// We free everything here
+void quit() {
+	int i;
+
+	unpost_form(form);
+
+	for (i = 0; i < nb_field; i++) {
+		free(field_buffer(field[i], 0));
+		free_field(field[i]);
+	}
+
+	free_form(form);
+	delwin(wbody);
+	delwin(inner);
+}
+
+char* get_next_str_field() {
+	int i;
+
+	if (str_field[0] != '\0')
+		cur_ch_field++;
+	
+	for (i = 0; i < 4; i++)
+		str_field[i] = cur_ch_field;
+
+	str_field[5] = '\0';
+
+	return str_field;
+}
+
+char* get_next_str_label() {
+	int i;
+
+	if (str_label[0] != '\0')
+		cur_ch_label++;
+	
+	for (i = 0; i < 5; i++)
+		str_label[i] = cur_ch_label;
+
+	str_label[5] = ':';
+	str_label[6] = '\0';
+
+	return str_label;
+}
+
+/*
+ * Create nb_field fields, one as a label, one as an active field e.g.:
+ *	[label]:	[field]
+ */
+void create_nb_fields() {
+	int i;
+
+	field = calloc(nb_field, sizeof(FIELD *));
+
+	if (!field) // No memory for you !
+		assert(1);
+
+	for (i = 0; i < nb_field-1; i++, cur_y += 2) {
+		// label
+		field[i] = new_field(1, 20, cur_y, cur_x, 0, 0);
+		field_opts_on(field[i], O_VISIBLE);
+		field_opts_off(field[i], O_EDIT);
+		field_opts_off(field[i], O_ACTIVE);
+		set_field_buffer(field[i], 0, get_next_str_label());
+
+		i++;
+
+		/*
+		 * This is a nasty tric:
+		 * I check if we wrote at the tail of the inner window,
+		 * if so, I move the field where it belongs (head of
+		 * the inner window).
+		 */
+		if (cur_y % lines == 0) {
+			cur_y = 1;
+			set_new_page(field[i-1], TRUE);
+			move_field(field[i-1], cur_y, cur_x);
+		}
+
+		// field
+		field[i] = new_field(1, 20, cur_y, cur_x + 10, 0, 0);
+		set_field_back(field[i], A_UNDERLINE);
+		field_opts_on(field[i], O_VISIBLE);
+		field_opts_on(field[i], O_ACTIVE);
+		field_opts_off(field[i], O_EDIT);
+		set_field_buffer(field[i], 0, get_next_str_field());
+	}
+
+	field[nb_field-1] = NULL;
+}
+
+int main() {
+	int ch;
+
+	initscr();
+	cbreak();
+	noecho();
+	keypad(stdscr, TRUE);
+
+	// This is required to init get_next_str_XXXX
+	str_label[0] = '\0';
+	str_field[0] = '\0';
+
+	wbody = newwin(lines + 2, 44, 1, 1);
+	box(wbody, 0, 0);
+	keypad(wbody, TRUE);
+
+	nb_field = 43; // this is too much fields for the window
+	create_nb_fields();
+	form = new_form(field);
+
+	// Check the doc here:
+	// http://www.tldp.org/HOWTO/NCURSES-Programming-HOWTO/forms.html#FORMWINDOWS
+	set_form_win(form, wbody);
+	inner = derwin(wbody, lines, 42, 1 ,1);
+	set_form_sub(form, inner);
+
+	post_form(form);
+
+	mvprintw(LINES - 4, 0, "Use F1 to quit");
+	mvprintw(LINES - 3, 0, "Use PAGE_UP, PAGE_DOWN to switch between pages");
+	mvprintw(LINES - 2, 0, "Use UP, DOWN arrow keys to switch between fields");
+	refresh();
+
+	while ((ch = wgetch(wbody)) != KEY_F(1)) {
+		switch (ch) {
+			case KEY_DOWN:
+				form_driver(form, REQ_NEXT_FIELD);
+				form_driver(form, REQ_END_LINE);
+				break;
+
+			case KEY_UP:
+				form_driver(form, REQ_PREV_FIELD);
+				form_driver(form, REQ_END_LINE);
+				break;
+			
+			/*
+			 * This is where you want to look to see how
+			 * to "scroll" to the next/previous page.
+			 */
+			case KEY_NPAGE:
+				form_driver(form, REQ_NEXT_PAGE);
+				set_form_page(form, ++cur_page);
+				break;
+
+			case KEY_PPAGE:
+				form_driver(form, REQ_PREV_PAGE);
+				set_form_page(form, --cur_page);
+				break;
+		}
+	}
+
+	quit();
+	endwin();
+	return 0;
+}
diff --git a/kls b/kls
index 3afd02a..459f783 100755
--- a/kls
+++ b/kls
@@ -7,6 +7,7 @@ KEY_BINDINGS = {  # can be extended
     "3": 'kubectl -n {namespace} edit {api_resource} {resource}',
     "4": 'kubectl -n {namespace} logs {resource} | batcat -l log --paging always --style numbers',
     "5": 'kubectl -n {namespace} exec -it {resource} sh',
+    "6": 'kubectl -n {namespace} debug {resource} -it --image=nicolaka/netshoot',
     "KEY_DC": 'kubectl -n {namespace} delete {api_resource} {resource}'  # KEY_DC is the delete key
 }
 # which api resources are on the top of menu?