open first parameter as elf

Makefile

@@ -2,7 +2,10 @@ NAME		= woody_woodpacker
 
 SRCS_PATH	= srcs/
 
-SRCS  =		$(SRCS_PATH)main.c
+SRCS  =		$(SRCS_PATH)main.c \
+			$(SRCS_PATH)utils.c \
+			$(SRCS_PATH)woody.c
+
 
 OBJS		= ${SRCS:.c=.o}
 
@@ -17,7 +20,7 @@ CFLAGS		= -Wall -Wextra -Werror
 all:	${NAME}
 
 .c.o:
-		${CC} ${DEFINES} ${CFLAGS} -c $< -o $@
+		${CC} ${INCLUDES} ${DEFINES} ${CFLAGS} -c $< -o $@
 
 $(NAME): ${OBJS}
 		make -C ft_printf

includes/woody.h

@@ -0,0 +1,31 @@
+#ifndef WOODY_H
+# define WOODY_H
+
+#include "../ft_printf/includes/ft_printf.h"
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <elf.h>
+
+typedef struct efl_content
+{
+	long unsigned int file_size;
+	char	*file_path;
+	char	*file;
+
+}				t_efl_content;
+
+
+// utils.c
+void	*secure_access(char *file, unsigned long file_size, unsigned long offset_to_data, unsigned long supposed_data_size);
+int		ft_put_error(char *str);
+
+// woody.c
+int woody(t_efl_content *file_content);
+
+#endif

srcs/main.c

@@ -1,4 +1,46 @@
-int main()
-{
+#include "../includes/woody.h"
 
+int get_elf_file(t_efl_content *file_content)
+{
+	int fd;
+	off_t off;
+
+	fd = open(file_content->file_path, O_RDONLY);
+	if (fd < 0)
+	{
+		ft_printf("Error: Failed to open \'%s\'\n", file_content->file_path);
+		return EXIT_FAILURE;
+	}
+	off = lseek(fd, 0, SEEK_END);
+    if (off == -1)
+    {
+		close(fd);
+		ft_printf("Error: Failed to read file offset \'%s\'\n", file_content->file_path);
+        return EXIT_FAILURE;
+    }
+	file_content->file_size = off;
+	file_content->file = mmap(NULL, file_content->file_size, PROT_READ, MAP_PRIVATE, fd, 0);
+    if (file_content->file  == MAP_FAILED)
+	{
+		close(fd);
+		ft_printf("Error: Failed to map file \'%s\'\n", file_content->file_path);
+		return EXIT_FAILURE;
+    }
+    close(fd);
+	return EXIT_SUCCESS;
+}
+
+int main(int ac, char **av)
+{
+	t_efl_content file_content;
+	if (ac != 2)
+	{
+		return ft_put_error("Woody_woodpacker take 1 argument\n");
+	}
+	file_content.file_path = av[1];
+	int ret = get_elf_file(&file_content);
+	if (ret == EXIT_FAILURE)
+		return ret;
+	
+	return woody(&file_content);
 }

srcs/utils.c

@@ -0,0 +1,16 @@
+#include "../includes/woody.h"
+
+void	*secure_access(char *file, unsigned long file_size, unsigned long offset_to_data, unsigned long supposed_data_size)
+{
+	if (file_size > offset_to_data && file_size >= (offset_to_data + supposed_data_size))
+		return (file + offset_to_data);
+	return NULL;
+}
+
+int ft_put_error(char *str)
+{
+	ft_putstr_fd("Error: ", STDERR_FILENO);
+	ft_putstr_fd(str, 2);
+	ft_putstr_fd("\n", STDERR_FILENO);
+	return EXIT_FAILURE;
+}

srcs/woody.c

@@ -0,0 +1,12 @@
+#include "../includes/woody.h"
+
+int woody(t_efl_content *file_content)
+{
+	Elf64_Ehdr *Ehdr = (Elf64_Ehdr *)secure_access(file_content->file, file_content->file_size, 0, sizeof(Elf64_Ehdr));
+
+	if (!Ehdr)
+		return EXIT_FAILURE;
+	
+	// if (Ehdr->e_ident[EI_CLASS])
+	return EXIT_SUCCESS;
+}