From 807e3d04650596872f002de46558ab912de9d625 Mon Sep 17 00:00:00 2001
From: hornet <hornet@lainlounge.xyz>
Date: Wed, 1 Jan 2025 22:16:44 +0500
Subject: [PATCH] add makefile, create ncurses windows

---
 Makefile |  4 ++++
 main.c   | 49 +++++++++++++++++++++++++++++++++++++------------
 2 files changed, 41 insertions(+), 12 deletions(-)
 create mode 100644 Makefile

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..ca46060
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,4 @@
+all: sentinel
+
+sentinel: main.c
+	gcc -lncurses -lcurl -lrtlsdr -lm main.c -o sentinel
\ No newline at end of file
diff --git a/main.c b/main.c
index f1077cd..92be0d4 100644
--- a/main.c
+++ b/main.c
@@ -5,6 +5,7 @@
 #include <string.h>
 #include <math.h>
 #include <unistd.h>
+#include <sys/ioctl.h>
 #include <ncurses.h>
 #include <rtl-sdr.h>
 #include <curl/curl.h>
@@ -46,9 +47,24 @@ bool SDR_PRESENT = false;
 bool RSS_LIST_PRESENT = false;
 bool COMMS_AVAILABLE = false;
 bool CURL_AVAILABLE = false;
+int term_rows, term_cols;
+
+/* declare ncurses windows */
+
+WINDOW * sdr;
+WINDOW * rss;
+WINDOW * defcon;
+
 
 /* declare reusable functions */
 
+void get_terminal_size(int *rows, int *cols) {
+    struct winsize w;
+    ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+    *rows = w.ws_row;
+    *cols = w.ws_col;
+}
+
 /* read out shell command output */
 char* readout(const char* command, char* buffer, size_t size) {
     FILE *fp = popen(command, "r");
@@ -180,9 +196,13 @@ void startup_checks() {
     } else {
        printf("internet connectivity status: ");
        printf(RED"offline\n"RESET);
-       printf(RED"internet-dependent capabilities will be unavailable!"RESET);
+       printf(RED"internet-dependent capabilities will be unavailable!\n"RESET);
        COMMS_AVAILABLE = false;
     }
+    /* get terminal size */
+    get_terminal_size(&term_rows, &term_cols);
+    printf("terminal size:  ");
+    printf(YELLOW"%dx%d\n"RESET, term_rows, term_cols);
     printf("----------------------------------------------------------------------\n");
     /* utilities presence check */
     printf(MAGENTA"UTILITIES\n\n"RESET);
@@ -200,7 +220,7 @@ void startup_checks() {
     printf(MAGENTA"all checks finished!\n"RESET);
     printf("######################################################################\n");
     printf(BLUE"initializing in 5 seconds...\n\n"RESET);
-    usleep(5000000);
+    //usleep(5000000);
     if (SDR_PRESENT == true)
     {
         printf(GREEN"initializing RTL-SDR...\n"RESET);
@@ -237,13 +257,14 @@ void init_colors() {
     init_pair(5, COLOR_MAGENTA, COLOR_BLACK);
     init_pair(6, COLOR_CYAN, COLOR_BLACK);
     init_pair(7, COLOR_WHITE, COLOR_BLACK);
+    init_pair(8, COLOR_WHITE, COLOR_RED);
 }
 
 void draw_bar_graph(double *data, int size) {
     clear();
     double max_value = 0.0;
     attron(COLOR_PAIR(6));
-    printw("center frequency: %.3f MHz    gain: %d    bandwidth: %.3f MHz", center_freq / (double)MHz, rtlsdr_get_tuner_gain(dev), bandwidth / (double)MHz);
+    wprintw(sdr, "center frequency: %.3f MHz    gain: %d    bandwidth: %.3f MHz", center_freq / (double)MHz, rtlsdr_get_tuner_gain(dev), bandwidth / (double)MHz);
     attroff(COLOR_PAIR(6));
     double bottom = center_freq - bandwidth / 2.0;
     double step = bandwidth / (double)size;
@@ -290,14 +311,6 @@ void rtl_sdr_waterfall() {
     usleep(500000);
 }
 
-void sdr_not_available() {
-    clear();
-    attron(COLOR_PAIR(1));
-    printw("SDR NOT AVAILABLE");
-    attroff(COLOR_PAIR(1));
-    refresh();
-    usleep(5000000);
-}
 
 /* DEFCON level functions */
 
@@ -309,6 +322,14 @@ void start_dashboard() {
     cbreak();
     noecho();
     init_colors();
+    refresh();
+    WINDOW * sdr = newwin(term_rows/2, term_cols/2, 1, 1);
+    WINDOW * rss = newwin(term_rows/2, term_cols/2-2, 1, term_cols/2+2);
+    box(sdr, 0, 0);
+    box(rss, 0, 0);
+    wrefresh(sdr);
+    wrefresh(rss);
+
     if (SDR_PRESENT == true) {
         do{
             rtl_sdr_waterfall();
@@ -316,7 +337,11 @@ void start_dashboard() {
     }
     else {
         do{
-            sdr_not_available();
+            wmove(sdr, 14, 47);
+            wbkgd(sdr, COLOR_PAIR(8));
+            wprintw(sdr, " SDR NOT AVAILABLE ");
+            wrefresh(sdr);
+            usleep(5000000);
         } while (true);
     }
     rtlsdr_close(dev);