From 11b2846ba5638b3dac5384c23cd50f4e470de8d2 Mon Sep 17 00:00:00 2001
From: Duke Leto <duke@leto.net>
Date: Tue, 8 Dec 2020 07:17:58 -0500
Subject: [PATCH] We don't fetch params

---
 zcutil/fetch-params.bat |  20 ----
 zcutil/fetch-params.sh  | 204 ----------------------------------------
 2 files changed, 224 deletions(-)
 delete mode 100644 zcutil/fetch-params.bat
 delete mode 100755 zcutil/fetch-params.sh

diff --git a/zcutil/fetch-params.bat b/zcutil/fetch-params.bat
deleted file mode 100644
index e2327d7e3..000000000
--- a/zcutil/fetch-params.bat
+++ /dev/null
@@ -1,20 +0,0 @@
-@echo off
-call :GET_CURRENT_DIR
-cd %THIS_DIR%
-IF NOT EXIST %APPDATA%\ZcashParams (
-MKDIR %APPDATA%\ZcashParams
-)
-IF NOT EXIST %APPDATA%\ZcashParams\sapling-spend.params (
-    ECHO Downloading Zcash trusted setup sapling-spend.key, this may take a while ...
-    .\wget64.exe --progress=dot:giga --continue --retry-connrefused --waitretry=3 --timeout=30 https://z.cash/downloads/sapling-spend.params -O %APPDATA%\ZcashParams\sapling-spend.params
-)
-IF NOT EXIST %APPDATA%\ZcashParams\sapling-output.params (
-    ECHO Downloading Zcash trusted setup sapling-output.key, this may take a while ...
-    .\wget64.exe --progress=dot:giga --continue --retry-connrefused --waitretry=3 --timeout=30 https://z.cash/downloads/sapling-output.params -O %APPDATA%\ZcashParams\sapling-output.params
-)
-goto :EOF
-:GET_CURRENT_DIR
-pushd %~dp0
-set THIS_DIR=%CD%
-popd
-goto :EOF
diff --git a/zcutil/fetch-params.sh b/zcutil/fetch-params.sh
deleted file mode 100755
index 8b5d0bb6f..000000000
--- a/zcutil/fetch-params.sh
+++ /dev/null
@@ -1,204 +0,0 @@
-#!/bin/bash
-# Copyright 2019 The Hush developers
-
-set -eu
-
-# We do not declare our own location because we can use the params
-# from any other installed coins
-if [[ "$OSTYPE" == "darwin"* ]]; then
-    PARAMS_DIR="$HOME/Library/Application Support/ZcashParams"
-else
-    PARAMS_DIR="$HOME/.zcash-params"
-fi
-
-SAPLING_SPEND_NAME='sapling-spend.params'
-SAPLING_OUTPUT_NAME='sapling-output.params'
-URL="https://z.cash/downloads"
-IPFS="/ipfs/QmZKKx7Xup7LiAtFRhYsE1M7waXcv9ir9eCECyXAFGxhEo"
-
-SHA256CMD="$(command -v sha256sum || echo shasum)"
-SHA256ARGS="$(command -v sha256sum >/dev/null || echo '-a 256')"
-
-WGETCMD="$(command -v wget || echo '')"
-IPFSCMD="$(command -v ipfs || echo '')"
-CURLCMD="$(command -v curl || echo '')"
-
-# fetch methods can be disabled with ZC_DISABLE_SOMETHING=1
-ZC_DISABLE_WGET="${ZC_DISABLE_WGET:-}"
-ZC_DISABLE_IPFS="${ZC_DISABLE_IPFS:-}"
-ZC_DISABLE_CURL="${ZC_DISABLE_CURL:-}"
-
-function fetch_wget {
-    if [ -z "$WGETCMD" ] || ! [ -z "$ZC_DISABLE_WGET" ]; then
-        return 1
-    fi
-
-    local filename="$1"
-    local dlname="$2"
-
-    cat <<EOF
-
-Retrieving (wget): $URL/$filename
-EOF
-
-    wget \
-        --progress=dot:giga \
-        --output-document="$dlname" \
-        --continue \
-        --retry-connrefused --waitretry=3 --timeout=30 \
-        "$URL/$filename"
-}
-
-function fetch_ipfs {
-    if [ -z "$IPFSCMD" ] || ! [ -z "$ZC_DISABLE_IPFS" ]; then
-        return 1
-    fi
-
-    local filename="$1"
-    local dlname="$2"
-
-    cat <<EOF
-
-Retrieving (ipfs): $IPFS/$filename
-EOF
-
-    ipfs get --output "$dlname" "$IPFS/$filename"
-}
-
-function fetch_curl {
-    if [ -z "$CURLCMD" ] || ! [ -z "$ZC_DISABLE_CURL" ]; then
-        return 1
-    fi
-
-    local filename="$1"
-    local dlname="$2"
-
-    cat <<EOF
-
-Retrieving (curl): $URL/$filename
-EOF
-
-    curl \
-        --output "$dlname" \
-        -# -L -C - \
-        "$URL/$filename"
-
-}
-
-function fetch_failure {
-    cat >&2 <<EOF
-
-Failed to fetch the Zcash zkSNARK parameters!
-Try installing one of the following programs and make sure you're online:
-
- * ipfs
- * wget
- * curl
-
-EOF
-    exit 1
-}
-
-function fetch_params {
-    local filename="$1"
-    local output="$2"
-    local dlname="${output}.dl"
-    local expectedhash="$3"
-
-    if ! [ -f "$output" ]
-    then
-        for method in wget ipfs curl failure; do
-            if "fetch_$method" "$filename" "$dlname"; then
-                echo "Download successful!"
-                break
-            fi
-        done
-
-        "$SHA256CMD" $SHA256ARGS -c <<EOF
-$expectedhash  $dlname
-EOF
-
-        # Check the exit code of the shasum command:
-        CHECKSUM_RESULT=$?
-        if [ $CHECKSUM_RESULT -eq 0 ]; then
-            mv -v "$dlname" "$output"
-        else
-            echo "Failed to verify parameter checksums!" >&2
-            exit 1
-        fi
-    fi
-}
-
-# Use flock to prevent parallel execution.
-function lock() {
-    local lockfile=/tmp/fetch_params.lock
-    if [[ "$OSTYPE" == "darwin"* ]]; then
-        if shlock -f ${lockfile} -p $$; then
-            return 0
-        else
-            return 1
-        fi
-    else
-        # create lock file
-        eval "exec 200>$lockfile"
-        # acquire the lock
-        flock -n 200 \
-            && return 0 \
-            || return 1
-    fi
-}
-
-function exit_locked_error {
-    echo "Only one instance of fetch-params.sh can be run at a time." >&2
-    exit 1
-}
-
-function main() {
-
-    lock fetch-params.sh \
-    || exit_locked_error
-
-    cat <<EOF
-Hush - fetch-params.sh
-
-This script will fetch the zkSNARK parameters used in shield
-transactions and verify their integrity with sha256sum.
-
-If they already exist locally, it will exit now and do nothing else.
-EOF
-
-    # Now create PARAMS_DIR and insert a README if necessary:
-    if ! [ -d "$PARAMS_DIR" ]; then
-        mkdir -p "$PARAMS_DIR"
-        README_PATH="$PARAMS_DIR/README"
-        cat >> "$README_PATH" <<EOF
-This directory stores common zkSNARK parameters needed for shielded
-transactions. Note that it is distinct from the daemon's -datadir argument
-because the parameters are large and may be shared across multiple distinct
--datadir's such as when setting up test networks.
-EOF
-
-        # This may be the first time the user's run this script, so give
-        # them some info, especially about bandwidth usage:
-        cat <<EOF
-The parameters are currently about 50MB, so plan accordingly
-for your bandwidth constraints. If the files are already present and
-have the correct sha256sum, no networking is used.
-
-Creating params directory. For details about this directory, see:
-$README_PATH
-
-EOF
-    fi
-
-    cd "$PARAMS_DIR"
-
-    # Sapling parameters:
-    fetch_params "$SAPLING_SPEND_NAME" "$PARAMS_DIR/$SAPLING_SPEND_NAME" "8e48ffd23abb3a5fd9c5589204f32d9c31285a04b78096ba40a79b75677efc13"
-    fetch_params "$SAPLING_OUTPUT_NAME" "$PARAMS_DIR/$SAPLING_OUTPUT_NAME" "2f0ebbcbb9bb0bcffe95a397e7eba89c29eb4dde6191c339db88570e3f3fb0e4"
-
-}
-
-main
-rm -f /tmp/fetch_params.lock
-exit 0