From c5f0d28481815036b4fecb6aa963cc3777002c0a Mon Sep 17 00:00:00 2001
From: cylgom <cylgom@cylgom.net>
Date: Sat, 30 Jun 2018 11:43:05 +0200
Subject: [PATCH] changed the default greeting to hostname

---
 src/lang.h  |  1 -
 src/ncui.c  |  5 ++++-
 src/utils.c | 38 +++++++++++++++++++++++++++++++++++++-
 src/utils.h |  1 +
 4 files changed, 42 insertions(+), 3 deletions(-)

diff --git a/src/lang.h b/src/lang.h
index c686237..88849cf 100644
--- a/src/lang.h
+++ b/src/lang.h
@@ -2,7 +2,6 @@
 #define _LANG_H_
 
 /* UI strings */
-#define LY_LANG_GREETING "Welcome to ly !"
 #define LY_LANG_VALID_CREDS "Logged In"
 #define LY_LANG_LOGOUT "Logged out"
 #define LY_LANG_SHELL "shell"
diff --git a/src/ncui.c b/src/ncui.c
index 39c735f..e29db3e 100644
--- a/src/ncui.c
+++ b/src/ncui.c
@@ -160,10 +160,12 @@ void init_scene(struct ncwin* win, struct ncform* form)
 void init_draw(struct ncwin* win, struct ncform* form)
 {
 	char line[LY_LIM_LINE_CONSOLE];
+	char *greeting;
 	/* frame */
 	box(win->win, 0, 0);
 	/* initializes error output and prints greeting message */
-	error_init(win->win, win->width, LY_LANG_GREETING);
+	hostname(&greeting);
+	error_init(win->win, win->width, greeting);
 	/* prints shutdown & reboot hints */
 	snprintf(line, sizeof(line), "F1 %s    F2 %s", LY_LANG_SHUTDOWN,
 	LY_LANG_REBOOT);
@@ -174,6 +176,7 @@ void init_draw(struct ncwin* win, struct ncform* form)
 	post_form(form->form);
 	/* dumps window buffer */
 	wrefresh(win->win);
+	free(greeting);
 }
 
 void end_form(struct ncform* form)
diff --git a/src/utils.c b/src/utils.c
index 1f6393f..6fea250 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -1,5 +1,6 @@
 #define _XOPEN_SOURCE 500
-
+#define _DEFAULT_SOURCE
+#define _POSIX_C_SOURCE 200809L
 /* std lib */
 #include <string.h>
 #include <stdlib.h>
@@ -14,6 +15,11 @@
 #include <ctype.h>
 #include <time.h>
 #include <unistd.h>
+/* sockets */
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
 
 void kernel_log(int mode)
 {
@@ -58,6 +64,36 @@ char* trim(char* s)
 	return s;
 }
 
+
+
+void hostname(char** out) {
+	struct addrinfo hints;
+	struct addrinfo *info;
+	char hostname[1024];
+	char* dot;
+	int result;
+
+	hostname[1023] = '\0';
+	gethostname(hostname, 1023);
+	memset(&hints, 0, sizeof hints);
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = AI_CANONNAME;
+	result = getaddrinfo(hostname, "http", &hints, &info);
+
+	if(result == 0 && info != NULL)
+	{
+		dot = strchr(info->ai_canonname, '.');
+		*out = strndup(info->ai_canonname, dot - info->ai_canonname);
+	}
+	else
+	{
+		*out = strdup("");
+	}
+
+	freeaddrinfo(info);
+}
+
 void error_init(WINDOW* win, int width, const char* s)
 {
 	static WINDOW* win_stack = NULL;
diff --git a/src/utils.h b/src/utils.h
index 857f4b3..c3d7e5e 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -7,6 +7,7 @@
 void kernel_log(int mode);
 char* trim(char* s);
 char* strdup(const char* src);
+void hostname(char** out);
 void error_init(WINDOW* win, int width, const char* s);
 void error_print(const char* s);
 chtype get_curses_char(int y, int x);