From d57a5985982ed2ba386eb4c0b4ca05ab3498238a Mon Sep 17 00:00:00 2001
From: memdmp <memdmp@memeware.net>
Date: Sat, 11 Jan 2025 20:20:16 +0100
Subject: feat: initial commit

---
 contrib/sig-canaries | 113 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100755 contrib/sig-canaries

(limited to 'contrib')

diff --git a/contrib/sig-canaries b/contrib/sig-canaries
new file mode 100755
index 0000000..26d8e4d
--- /dev/null
+++ b/contrib/sig-canaries
@@ -0,0 +1,113 @@
+#!/bin/zsh
+set -e
+confirm() {
+  while true; do
+    echo -n "$1 [y/N] "
+    read -k 1 -s yn
+    case $yn in
+      [Yy]* ) echo -e "$yn";break;;
+      [Nn\r\n]* ) echo -e "$yn\nAborted." 1>&2; exit 1;;
+      * ) echo -e "\nMust answer with y/n.";;
+    esac
+  done
+}
+sign() {
+  clear
+  cat "$1"
+  confirm "Do you wish to sign $1, as shown above?"
+  gpg --default-key "${SIGKEY:-'B546778F06BBCC8EC167DB3CD919706487B8B6DE'}" -o "${2:-"$1.sig"}" --clearsign "$1"
+  if [[ "$2" == "" ]] && (grep ".sig" <<< "$1"); then
+    mv "$1.sig" "$1"
+  fi;
+}
+
+export DAY="$(date -u "+%Y-%m-%d")"
+export TIME="$(date -u "+%H:%M:%S")"
+
+statustext() {
+  gt() {
+    echo " ┏━ Date & Time ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┅┅┅┅┅┅┅┄┄┄┄┄
+ ┃   
+ ┃   Canary will target $DAY, at $TIME
+ ┃   "
+    if [[ "$MONERO_HASH" != "" ]]; then
+      echo " ┣━ Monero ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┅┅┅┅┅┅┅┄┄┄┄┄
+ ┃   
+ ┃   Canary will target monero blockhash $MONERO_HASH
+ ┃   "
+    fi;
+    if [[ "$KERNEL_COMMIT" != "" ]]; then
+      echo " ┣━ Kernel ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┅┅┅┅┅┅┅┄┄┄┄┄
+ ┃   
+ ┃   Canary will target kernel commit $KERNEL_COMMIT
+ ┃   "
+    fi
+    echo " ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┅┅┅┅┅┅┅┄┄┄┄┄"
+  }
+  clear 1>&2;
+  echo "$(gt)$(seq $(wc -l <<< "$(gt)") 15 | sed -E 's/[0-9]+/ /g')" 1>&2
+}
+statustext
+confirm "Do you wish to prepare canaries targetting $DAY at $TIME?"
+
+localmonero_blockhash_api() {
+  statustext
+  echo 'Fetching Monero Blockheight & Blockhash' 1>&2;
+  curl -fsSL "https://localmonero.co/blocks/api/get_block_data/$(curl -fsSL https://localmonero.co/blocks/api/get_stats | jq .height)" | jq '.block_data.result.block_header.hash'
+}
+manual_monero_hash_entry() {
+  statustext
+  echo -n "Please enter the current monero block hash: "
+  read MONERO_HASH
+  if [[ "$(wc -m <<< "$MONERO_HASH")" != "65" ]]; then
+    confirm "This is the incorrect length for a monero block hash. Are you sure?" || get_monero
+  fi
+  export MONERO_HASH
+}
+get_monero() {
+  IS_MANUAL=false;
+  export MONERO_HASH="$(localmonero_blockhash_api || (IS_MANUAL=true; manual_monero_hash_entry))"
+  statustext
+  echo -e 'Validation Sources:'
+  if [[ "$IS_MANUAL" == "true" ]]; then
+    echo -e '- https://localmonero.co/blocks (use if height was manually entered only)'
+  fi
+  echo -e '- https://moneroexplorer.org - click latest height'
+  echo -e '- https://xmrscan.org/blocks'
+  echo -e '- a local monerod'
+  confirm "Please validate that $MONERO_HASH is the latest monero hash - is it correct?"
+}
+get_kernel_commit() {
+  statustext
+  rm -rf /tmp/kernel
+  echo "Fetching kernel commit..."
+  git clone --depth 1 --bare --branch master https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git /tmp/kernel
+  export KERNEL_COMMIT="\"$(git --git-dir=/tmp/kernel rev-parse HEAD)\""
+  rm -rf /tmp/kernel
+  statustext
+  confirm "Please validate that $KERNEL_COMMIT is the current latest commit hash of the linux kernel, as per https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/"
+}
+export KERNEL_COMMIT=""
+export MONERO_HASH=""
+get_monero
+get_kernel_commit
+
+process_canary() {
+  FILE="$1"
+  replace_template() {
+    sed -i "s/\\[$1\\]/$2/g" "$FILE"
+  }
+  replace_template 'PRESENT_DAY' "$DAY"
+  replace_template 'PRESENT_TIME' "$TIME"
+  replace_template 'MONERO_HASH' "$(jq -r <<< "$MONERO_HASH")"
+  replace_template 'LINUX_KERNEL_COMMIT' "$(jq -r <<< "$KERNEL_COMMIT")"
+  rm -f "$FILE.sig"
+  sign "$FILE" "$FILE.sig"
+  mv "$FILE.sig" "$FILE"
+}
+
+mkdir -p static/canaries
+cp -r canary-templates/* static/canaries/
+for f in static/canaries/*; do
+  process_canary "$f"
+done;
-- 
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