From b1bc747824c21749d3d09c1aa6b1ce71087cd8cd Mon Sep 17 00:00:00 2001
From: Nikias Bassen
Date: Thu, 15 Jun 2017 20:09:03 +0200
Subject: Add udev rules file to allow non-root users access DFU/Recovery mode
 devices

---
 Makefile.am                   |  4 ++--
 configure.ac                  | 54 +++++++++++++++++++++++++++++++++++++++++++
 udev/39-libirecovery.rules.in |  5 ++++
 udev/Makefile.am              | 21 +++++++++++++++++
 4 files changed, 82 insertions(+), 2 deletions(-)
 create mode 100644 udev/39-libirecovery.rules.in
 create mode 100644 udev/Makefile.am

diff --git a/Makefile.am b/Makefile.am
index 021066e..0ddd6f7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,6 @@
 AUTOMAKE_OPTIONS = foreign
 ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = src include tools
+SUBDIRS = src include tools udev
 
 pkgconfigdir = $(libdir)/pkgconfig
-pkgconfig_DATA = libirecovery.pc
\ No newline at end of file
+pkgconfig_DATA = libirecovery.pc
diff --git a/configure.ac b/configure.ac
index 422e527..e13c571 100644
--- a/configure.ac
+++ b/configure.ac
@@ -147,6 +147,59 @@ if test "$enable_largefile" != no; then
 fi
 AC_SUBST(LFS_CFLAGS)
 
+AC_ARG_WITH([udev],
+	AS_HELP_STRING([--with-udev],
+	[Configure and install udev rules file for DFU/Recovery mode devices]),
+	[],
+	[if $($PKG_CONFIG --exists udev); then with_udev=yes; else with_udev=no; fi])
+
+AC_ARG_WITH([udevrulesdir],
+	AS_HELP_STRING([--with-udevrulesdir=DIR],
+	[Directory for udev rules (implies --with-udev)]),
+	[with_udev=yes],
+	[with_udevrulesdir=auto])
+
+AC_ARG_WITH([udevrule],
+	AS_HELP_STRING([--with-udevrule="RULE"],
+	[udev activation rule (implies --with-udev)]),
+	[with_udev=yes],
+	[with_udevrule=auto])
+
+if test "x$with_udev" = "xyes"; then
+	if test "x$with_udevrule" = "xauto"; then
+		for I in plugdev storage disk staff; do
+			if grep $I /etc/group >/dev/null; then
+				USEGROUP=$I
+				break
+			fi
+		done
+		if test "x$USEGROUP" != "x"; then
+			if ! groups |grep $USEGROUP >/dev/null; then
+				AC_MSG_WARN([The group '$USEGROUP' was determined to be used for the udev rule, but the current user is not member of this group.])
+			fi
+		else
+			AC_MSG_ERROR([Could not determine an appropriate user group for the udev activation rule.
+    Please manually specify a udev activation rule using --with-udevrule=<RULE>
+    Example: --with-udevrule="OWNER=\\"root\\", GROUP=\\"myusergroup\\", MODE=\\"0660\\""])
+		fi
+		with_udevrule="OWNER=\"root\", GROUP=\"$USEGROUP\", MODE=\"0660\""
+	fi
+
+	if test "x$with_udevrulesdir" = "xauto"; then
+		udevdir=$($PKG_CONFIG --silence-errors --variable=udevdir udev)
+		if test "x$udevdir" != "x"; then
+			with_udevrulesdir=$udevdir"/rules.d"
+		else
+			with_udevrulesdir="\${prefix}/lib/udev/rules.d"
+			AC_MSG_WARN([Could not determine default udev rules directory. Using $with_udevrulesdir.])
+		fi
+	fi
+
+	AC_SUBST([udev_activation_rule], [$with_udevrule])
+	AC_SUBST([udevrulesdir], [$with_udevrulesdir])
+fi
+AM_CONDITIONAL(WITH_UDEV, test "x$with_udev" = "xyes")
+
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
 
 AC_OUTPUT([
@@ -155,6 +208,7 @@ src/Makefile
 include/Makefile
 tools/Makefile
 libirecovery.pc
+udev/Makefile
 ])
 
 echo "
diff --git a/udev/39-libirecovery.rules.in b/udev/39-libirecovery.rules.in
new file mode 100644
index 0000000..3f1e906
--- /dev/null
+++ b/udev/39-libirecovery.rules.in
@@ -0,0 +1,5 @@
+# Handle iOS devices in DFU and Recovery mode - for use with libirecovery
+
+# Change group and permissions of iOS devices in DFU, legacy WTF, and Recovery mode
+ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="05ac", ATTR{idProduct}=="122[27]|128[0-3]", @udev_activation_rule@
+
diff --git a/udev/Makefile.am b/udev/Makefile.am
new file mode 100644
index 0000000..2a7ad98
--- /dev/null
+++ b/udev/Makefile.am
@@ -0,0 +1,21 @@
+if WITH_UDEV
+edit = \
+	$(SED) -r \
+	-e 's|@udev_activation_rule[@]|$(udev_activation_rule)|g' \
+	< $< > $@ || rm $@
+
+udevrules_DATA = \
+	39-libirecovery.rules
+
+39-libirecovery.rules: 39-libirecovery.rules.in
+	$(edit)
+
+EXTRA_DIST = \
+	39-libirecovery.rules.in
+
+MAINTAINERCLEANFILES = \
+	39-libirecovery.rules
+
+CLEANFILES = \
+	39-libirecovery.rules
+endif
-- 
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