From 7274e130757ffb61b8489079c97ad2a4e81f3748 Mon Sep 17 00:00:00 2001
From: Gregory <neogen570@gmail.com>
Date: Sat, 27 Jul 2019 20:03:42 +0300
Subject: [PATCH] simple fat

---
 .vscode/launch.json | 16 ++++++++++++++++
 inc/ft_nm.h         |  8 ++++++--
 meson.build         |  1 +
 src/fat.c           | 33 +++++++++++++++++++++++++++++++++
 src/main.c          |  4 +++-
 src/nm_file.c       |  2 --
 6 files changed, 59 insertions(+), 5 deletions(-)
 create mode 100644 src/fat.c

diff --git a/.vscode/launch.json b/.vscode/launch.json
index 9bbfc12..fd8fdd1 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -48,6 +48,22 @@
             "environment": [],
             "externalConsole": false,
             "MIMode": "gdb",
+            "osx": {
+                "MIMode": "lldb"
+            }
+		},
+		{
+            "name": "fat",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/debug_bld/ft_nm",
+            "args": ["/usr/bin/javah"],
+            "preLaunchTask": "build",
+            "stopAtEntry": false,
+            "cwd": "${workspaceFolder}",
+            "environment": [],
+            "externalConsole": false,
+            "MIMode": "gdb",
             "osx": {
                 "MIMode": "lldb"
             }
diff --git a/inc/ft_nm.h b/inc/ft_nm.h
index 95fff1d..36a5451 100644
--- a/inc/ft_nm.h
+++ b/inc/ft_nm.h
@@ -6,7 +6,7 @@
 /*   By: gtertysh <gtertysh@student.unit.ua>        +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/05/06 22:37:16 by foton             #+#    #+#             */
-/*   Updated: 2019/07/27 18:10:09 by gtertysh         ###   ########.fr       */
+/*   Updated: 2019/07/27 19:50:54 by gtertysh         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -15,6 +15,7 @@
 
 #include <mach-o/loader.h>
 #include <mach-o/nlist.h>
+#include <mach-o/fat.h>
 #include <stddef.h>
 
 typedef struct symtab_command		t_symtab_command;
@@ -35,7 +36,6 @@ typedef struct						s_nm_file
 	void							*file;
 	uint32_t						size;
 	int								fd;
-	const char						*filename;
 }									t_nm_file;
 
 typedef struct						s_nm_mach_64
@@ -73,6 +73,10 @@ void								close_file
 	t_nm_file *file
 );
 
+void								fat
+(
+	t_nm_file *file
+);
 
 void								macho64
 (
diff --git a/meson.build b/meson.build
index 72a702f..23c3882 100644
--- a/meson.build
+++ b/meson.build
@@ -32,6 +32,7 @@ sources = [
   'src/nm_file.c',
   'src/macho64.c',
   'src/macho32.c',
+  'src/fat.c',
   'src/print_address.c',
   'src/find_symbol_table_command.c',
 ]
diff --git a/src/fat.c b/src/fat.c
new file mode 100644
index 0000000..f94ae07
--- /dev/null
+++ b/src/fat.c
@@ -0,0 +1,33 @@
+#include "ft_nm.h"
+#include "libft.h"
+#include <stdio.h>
+
+void	fat(t_nm_file *file)
+{
+	struct fat_arch		*arch_runner;
+	struct fat_header	*header;
+	t_nm_file			arch_file;
+	uint32_t			i;
+
+	header = (struct fat_header *)file->file;
+
+	if (header->magic != FAT_CIGAM)
+	{
+		ft_putstr_fd("only 32bit big endian fat binaries supported\n",
+			STDERR_FILENO);
+		exit(1);
+	}
+	arch_runner = file->file + sizeof(struct fat_header);
+	i = 0;
+	while (i < OSSwapInt32(header->nfat_arch))
+	{
+		if (OSSwapInt32(arch_runner->cputype) == CPU_TYPE_X86_64)
+		{
+			arch_file.file = file->file + OSSwapInt32(arch_runner->offset);
+			arch_file.size = OSSwapInt32(arch_runner->size);
+			macho64(&arch_file);
+		}
+		arch_runner = arch_runner + sizeof(struct fat_arch);
+		i++;
+	}
+}
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 35d0164..42d153e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,7 +6,7 @@
 /*   By: gtertysh <gtertysh@student.unit.ua>        +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/07/13 14:52:27 by gtertysh          #+#    #+#             */
-/*   Updated: 2019/07/27 17:57:52 by gtertysh         ###   ########.fr       */
+/*   Updated: 2019/07/27 19:35:42 by gtertysh         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -26,6 +26,8 @@ void		hanldle_file(const char *filename)
 		macho64(&file);
 	else if (magic == MH_MAGIC)
 		macho32(&file);
+	else if (magic == FAT_CIGAM)
+		fat(&file);
 	else
 		ft_putstr("invalid magic number.");
 	close_file(&file);
diff --git a/src/nm_file.c b/src/nm_file.c
index d863128..2feba86 100644
--- a/src/nm_file.c
+++ b/src/nm_file.c
@@ -12,7 +12,6 @@ void	init_file(t_nm_file *file)
 {
 	file->fd = -1;
 	file->file = NULL;
-	file->filename = NULL;
 	file->size = 0;
 }
 
@@ -20,7 +19,6 @@ void	open_file(const char *filename, t_nm_file *file)
 {
 	struct stat stat_buff;
 
-	file->filename = filename;
 	file->fd = open(filename, O_RDONLY);
 	if (file->fd == -1)
 	{