/ proxy on/off

dots/bash/.bashrc

@@ -106,6 +106,51 @@ nmrestart() {
     systemctl status NetworkManager
 }
 
+# https://wiki.archlinux.org/title/Proxy_server
+function proxy_on() {
+    export no_proxy="localhost,127.0.0.1,localaddress,.localdomain.com"
+
+    if (( $# > 0 )); then
+        valid=$(echo $@ | sed -n 's/\([0-9]\{1,3\}.\?\)\{4\}:\([0-9]\+\)/&/p')
+        if [[ $valid != $@ ]]; then
+            >&2 echo "Invalid address"
+            return 1
+        fi
+        local proxy=$1
+        export http_proxy="$proxy" \
+               https_proxy=$proxy \
+               ftp_proxy=$proxy \
+               rsync_proxy=$proxy
+        echo "Proxy environment variable set."
+        return 0
+    fi
+
+    echo -n "username: "; read username
+    if [[ $username != "" ]]; then
+        echo -n "password: "
+        read -es password
+        local pre="$username:$password@"
+    fi
+
+    echo -n "server: "; read server
+    echo -n "port: "; read port
+    local proxy=$pre$server:$port
+    export http_proxy="$proxy" \
+           https_proxy=$proxy \
+           ftp_proxy=$proxy \
+           rsync_proxy=$proxy \
+           HTTP_PROXY=$proxy \
+           HTTPS_PROXY=$proxy \
+           FTP_PROXY=$proxy \
+           RSYNC_PROXY=$proxy
+}
+
+function proxy_off(){
+    unset http_proxy https_proxy ftp_proxy rsync_proxy \
+          HTTP_PROXY HTTPS_PROXY FTP_PROXY RSYNC_PROXY
+    echo -e "Proxy environment variable removed."
+}
+
 # ---
 # screens / displays / power management
 # ---