added feature for setting syncmode

bin/start.sh

@@ -60,6 +60,7 @@ function getsyncmode
         echo
         echo '***'
         echo
+        # (re)configure parameters (you never know if they changed)
 	flexargs="$( accountlist) $( getminer ) $( getsyncmode )"
         set -x
         geth			            \

bin/syncmode.sh

+#!/bin/bash
+# Robert Martin-Legene <robert@nic.ar>
+
+if [ -z "${BFAHOME}" ]; then echo "\$BFAHOME not set. Did you source bfa/bin/env ?" >&2; exit 1; fi
+source ${BFAHOME}/bin/libbfa.sh || exit 1
+
+defaultmode="fast"
+
+echo "Available synchronization modes:"
+echo "  full : verify all blocks and all transactions since genesis (most secure)"
+echo "  fast : verify all blocks but not all transactions (faster than full, but less certain)"
+echo "  light: Makes this node into a light node which downloads almost"
+echo "         nothing, but relies on fast and full nodes in the network"
+echo "         to answer it's requests. This is the fastest and uses least"
+echo "         local resources, but outsources all trust to another node."
+echo "Default mode is fast, because for many, it is a healthy compromise"
+echo "between speed and paranoia. You can change the setting, according to"
+echo "your needs."
+
+function modefilter
+{
+    case "$mode" in
+        "full"|"fast"|"light")
+            ;;
+        *)
+            echo "Unsupported mode."
+            mode=""
+            return
+            ;;
+    esac
+    true
+}
+
+bfaconfig node
+mode=$( cat ${BFANODEDIR}/syncmode 2>/dev/null || true )
+mode=${mode:-${defaultmode}}
+orgmode=$mode
+modefilter
+echo "Your current mode is set to ${mode}"
+killed=0
+mode=
+
+echo
+while [ -z "${mode}" ]
+do
+    read -p "Which mode do you wish? : " mode
+    modefilter
+done
+echo $mode > ${BFANODEDIR}/syncmode
+if [ "$orgmode" = "fast" -a "$mode" = "full" ]
+then
+    echo "You increased your paranoia level. The proper thing to do now,"
+    echo "would be to delete your version of what you synchronized with"
+    echo "fast mode, and revalidate everything in the entire blockchain."
+    echo "This probably takes quite a long time and also requires downloading"
+    echo "all blocks from the entire blockchain again."
+    REPLY=
+    while [ "$REPLY" != "y" -a "$REPLY" != "n" ]
+    do
+      read -p "Do you wish to delete all downloaded blocks and resynchronize? [yn]: "
+      REPLY=${REPLY,,}
+    done
+    if [ "$REPLY" = "y" ]
+    then
+        if [ -r "${BFANODEDIR}/geth.pid" ]
+        then
+            local pid=$( cat ${BFANODEDIR}/geth.pid )
+            kill -0 $pid 2>/dev/null &&
+                echo "Killing running geth." &&
+                killed=1
+            while ! kill $pid 2>/dev/null
+            do
+                sleep 1
+            done
+        fi
+        rm -fr ${BFANODEDIR}/geth/chainstate ${BFANODEDIR}/geth/lightchainstate
+        geth --cache 0 --datadir ${BFANODEDIR} init ${BFAHOME}/src/genesis.json
+        test $killed -eq 1 &&
+            echo &&
+            echo "The startup.sh should restart your geth shortly."
+    fi
+fi