From 0738d61eb38f4760c14e5da88874d954d95786dd Mon Sep 17 00:00:00 2001
From: pancake <pancake@nopcode.org>
Date: Fri, 27 Sep 2024 03:16:30 +0200
Subject: [PATCH] ai

---
 libr/main/rapatch2.c | 23 ++++++++++++--
 man/rapatch2.1       | 72 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 93 insertions(+), 2 deletions(-)
 create mode 100644 man/rapatch2.1

diff --git a/libr/main/rapatch2.c b/libr/main/rapatch2.c
index 01f17bd90a..56cf845343 100644
--- a/libr/main/rapatch2.c
+++ b/libr/main/rapatch2.c
@@ -6,10 +6,13 @@
 #include <r_main.h>
 
 static int show_help(int v) {
-	printf ("Usage: rapatch2 [-R] [origfile] ([patchfile])\n");
+	printf ("Usage: rapatch2 [-p N] [-sv] [-R] [origfile] ([patchfile])\n");
 	if (v) {
 		printf (
+			"  -p N       patch level, skip N directories\n"
 			"  -R         reverse patch\n"
+			"  -s         be silent\n"
+			"  -v         show version\n"
 		       );
 	}
 	return 1;
@@ -20,15 +23,25 @@ R_API int r_main_rapatch2(int argc, const char **argv) {
 	int o;
 
 	bool reverse = false;
+	bool silent = false;
+	int patchlevel = 0;
 
-	r_getopt_init (&opt, argc, argv, "hR");
+	r_getopt_init (&opt, argc, argv, "hRvsp:");
 	while ((o = r_getopt_next (&opt)) != -1) {
 		switch (o) {
 		case 'h':
 			return show_help (1);
+		case 's':
+			silent = true;
+			break;
+		case 'p':
+			patchlevel = atoi (opt.arg);
+			break;
 		case 'R':
 			reverse = true;
 			break;
+		case 'v':
+			return r_main_version_print ("rapatch2", 0);
 		default:
 			return show_help (0);
 		}
@@ -47,6 +60,12 @@ R_API int r_main_rapatch2(int argc, const char **argv) {
 	if (reverse) {
 		R_LOG_TODO ("reverse patch not yet supported");
 	}
+	if (silent) {
+		R_LOG_TODO ("silent not yet supported");
+	}
+	if (patchlevel) {
+		R_LOG_TODO ("patchlevel not yet supported");
+	}
 	const char *r2argv[5] = {
 		"radare2",
 		"-qwP",
diff --git a/man/rapatch2.1 b/man/rapatch2.1
new file mode 100644
index 0000000000..b191b5c830
--- /dev/null
+++ b/man/rapatch2.1
@@ -0,0 +1,72 @@
+.TH RAPATCH2 1 "rapatch2 tool" "Sep 27, 2024"
+.SH NAME
+rapatch2 - binary patching utility
+.SH SYNOPSIS
+.B rapatch2
+[-p #] [-R] file patch
+
+.SH DESCRIPTION
+rapatch2 is a tool from the radare2 suite designed for binary patching code and data.
+.PP
+Human friendly text format to apply patches to binary files.
+.Pp
+It supports a wide range of formats and features, including architecture and
+bits specification, delta patching, graph patching, and more.
+.Pp
+Those patches must be written in files and the syntax looks like the following:
+
+.RS
+.nf
+^# -> comments
+. -> execute command
+! -> execute command
+OFFSET { code block }
+OFFSET "string"
+OFFSET 01020304
+OFFSET : assembly
++ {code}|"str"|0210|: asm
+.fi
+.RE
+
+.SH OPTIONS
+.TP
+.B -h
+Show this help message
+.TP
+.B -R
+Reverse patch
+.TP
+.B -p [num]
+Skip num directories from patch file
+
+.TP
+.B -s
+Be silent
+
+.TP
+.B -v
+Show version string
+
+.SH USAGE EXAMPLES
+.TP
+.B "Comparing two binaries"
+radiff2 -u bin1 bin2 > patch
+
+rapatch2 -p 1 < patch
+
+.TP
+.B "Patch only one file"
+rapatch2 bin1 patch
+
+.SH COMMAND IN R2
+
+See the -p flag and command.
+
+.SH SEE ALSO
+radare2(1)
+
+.Sh WWW
+.Pp
+https://www.radare.org/
+.SH AUTHOR
+pancake <pancake@nopcode.org>