fix(security) & init(nix): use strl instead of strn in functions. Introduce nix-compilation support with .envrc and nix-shell

Author: h4rldev

.envrc

@@ -0,0 +1 @@
+use nix

shell.nix

@@ -0,0 +1,14 @@
+{ pkgs ? import <nixpkgs> {}}:
+
+pkgs.mkShell {
+  allowUnfree = true;
+  name = "hamon!";
+  packages = with pkgs; [
+    zsh
+    clang-tools
+    clang
+    mold
+  ];
+  shellHook = ''
+  '';
+}

src/hamon/cli.c

@@ -1,4 +1,3 @@
-#include <stdio.h>
 #define COLORS
 #define GRAPHICS
 

src/hamon/config.c

@@ -130,7 +130,7 @@ int gen_default_config(void) {
     return 1;
   }
 
-  strncpy(config_buffer, default_config, config_buffer_size);
+  strlcpy(config_buffer, default_config, config_buffer_size);
 
 #if _WIN32
   env_size = strlen(getenv("APPDATA"));

src/hamon/escape.c

@@ -15,13 +15,13 @@ char *assemble(char *codes[], int codesc) {
   snprintf(buffer, sizeof(BASE), BASE);
 
   for (int code_index = 0; code_index < codesc; code_index++) {
-    strncat(buffer, codes[code_index], sizeof(codes[code_index]));
+    strlcat(buffer, codes[code_index], sizeof(codes[code_index]));
     if (code_index != (codesc - 1)) {
-      strncat(buffer, ";", 1);
+      strlcat(buffer, ";", 1);
     }
   }
 
-  strncat(buffer, END, 1);
+  strlcat(buffer, END, 1);
   return buffer;
 }
 

src/hamon/file.c

@@ -1,8 +1,7 @@
-#include <stdio.h>
 #define COLORS
 
-#include "headers/escape.h"
 #include "headers/file.h"
+#include "headers/escape.h"
 
 int write_file(const char *filename, const char *content, const size_t size) {
   FILE *file = fopen(filename, "w");