From 7971cb0aa3e517a53f0ce6d3ee9bc3179041ccb8 Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Wed, 25 May 2022 17:12:18 -0500
Subject: mLinux 6

---
 scripts/oe-git-proxy | 159 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100755 scripts/oe-git-proxy

(limited to 'scripts/oe-git-proxy')

diff --git a/scripts/oe-git-proxy b/scripts/oe-git-proxy
new file mode 100755
index 0000000..1247902
--- /dev/null
+++ b/scripts/oe-git-proxy
@@ -0,0 +1,159 @@
+#!/bin/bash
+
+# oe-git-proxy is a simple tool to be via GIT_PROXY_COMMAND. It uses socat
+# to make SOCKS5 or HTTPS proxy connections.
+# It uses ALL_PROXY or all_proxy or http_proxy to determine the proxy server,
+# protocol, and port.
+# It uses NO_PROXY to skip using the proxy for a comma delimited list of
+# hosts, host globs (*.example.com), IPs, or CIDR masks (192.168.1.0/24). It
+# is known to work with both bash and dash shells.
+#
+# Example ALL_PROXY values:
+# ALL_PROXY=socks://socks.example.com:1080
+# ALL_PROXY=https://proxy.example.com:8080
+#
+# Copyright (c) 2013, Intel Corporation.
+# All rights reserved.
+#
+# AUTHORS
+# Darren Hart <dvhart@linux.intel.com>
+
+# Locate the netcat binary
+SOCAT=$(which socat 2>/dev/null)
+if [ $? -ne 0 ]; then
+	echo "ERROR: socat binary not in PATH" 1>&2
+	exit 1
+fi
+METHOD=""
+
+# Test for a valid IPV4 quad with optional bitmask
+valid_ipv4() {
+	echo $1 | egrep -q "^([1-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3}(/(3[0-2]|[1-2]?[0-9]))?$"
+	return $?
+}
+
+# Convert an IPV4 address into a 32bit integer
+ipv4_val() {
+	IP="$1"
+	SHIFT=24
+	VAL=0
+	for B in ${IP//./ }; do
+		VAL=$(($VAL+$(($B<<$SHIFT))))
+		SHIFT=$(($SHIFT-8))
+	done
+	echo "$VAL"
+}
+
+# Determine if two IPs are equivalent, or if the CIDR contains the IP
+match_ipv4() {
+	CIDR=$1
+	IP=$2
+
+	if [ -z "${IP%%$CIDR}" ]; then
+		return 0
+	fi
+
+	# Determine the mask bitlength
+	BITS=${CIDR##*/}
+	[ "$BITS" != "$CIDR" ] || BITS=32
+	if [ -z "$BITS" ]; then
+		return 1
+	fi
+
+	IPVAL=$(ipv4_val $IP)
+	IP2VAL=$(ipv4_val ${CIDR%%/*})
+
+	# OR in the unmasked bits
+	for i in $(seq 0 $((32-$BITS))); do
+		IP2VAL=$(($IP2VAL|$((1<<$i))))
+		IPVAL=$(($IPVAL|$((1<<$i))))
+	done
+
+	if [ $IPVAL -eq $IP2VAL ]; then
+		return 0
+	fi
+	return 1
+}
+
+# Test to see if GLOB matches HOST
+match_host() {
+	HOST=$1
+	GLOB=$2
+
+	if [ -z "${HOST%%$GLOB}" ]; then
+		return 0
+	fi
+
+	# Match by netmask
+	if valid_ipv4 $GLOB; then
+		HOST_IP=$(gethostip -d $HOST)
+		if valid_ipv4 $HOST_IP; then
+			match_ipv4 $GLOB $HOST_IP
+			if [ $? -eq 0 ]; then
+				return 0
+			fi
+		fi
+	fi
+
+	return 1
+}
+
+# If no proxy is set or needed, just connect directly
+METHOD="TCP:$1:$2"
+
+[ -z "${ALL_PROXY}" ] && ALL_PROXY=$all_proxy
+[ -z "${ALL_PROXY}" ] && ALL_PROXY=$http_proxy
+
+if [ -z "$ALL_PROXY" ]; then
+	exec $SOCAT STDIO $METHOD
+fi
+
+# Connect directly to hosts in NO_PROXY
+for H in ${NO_PROXY//,/ }; do
+	if match_host $1 $H; then
+		exec $SOCAT STDIO $METHOD
+	fi
+done
+
+# Proxy is necessary, determine protocol, server, and port
+# extract protocol
+PROTO=${ALL_PROXY%://*}
+# strip protocol:// from string
+ALL_PROXY=${ALL_PROXY#*://}
+# extract host & port parts:
+#   1) drop username/password
+PROXY=${ALL_PROXY##*@}
+#   2) remove optional trailing /?
+PROXY=${PROXY%%/*}
+#   3) extract optional port
+PORT=${PROXY##*:}
+if [ "$PORT" = "$PROXY" ]; then
+	PORT=""
+fi
+#   4) remove port
+PROXY=${PROXY%%:*}
+
+# extract username & password
+PROXYAUTH="${ALL_PROXY%@*}"
+[ "$PROXYAUTH" = "$ALL_PROXY" ] && PROXYAUTH=
+[ -n "${PROXYAUTH}" ] && PROXYAUTH=",proxyauth=${PROXYAUTH}"
+
+if [ "$PROTO" = "socks" ] || [ "$PROTO" = "socks4a" ]; then
+	if [ -z "$PORT" ]; then
+		PORT="1080"
+	fi
+	METHOD="SOCKS4A:$PROXY:$1:$2,socksport=$PORT"
+elif [ "$PROTO" = "socks4" ]; then
+	if [ -z "$PORT" ]; then
+		PORT="1080"
+	fi
+	METHOD="SOCKS4:$PROXY:$1:$2,socksport=$PORT"
+else
+	# Assume PROXY (http, https, etc)
+	if [ -z "$PORT" ]; then
+		PORT="8080"
+	fi
+	METHOD="PROXY:$PROXY:$1:$2,proxyport=${PORT}${PROXYAUTH}"
+fi
+
+exec $SOCAT STDIO "$METHOD"
-- 
cgit v1.2.3