Hello world

install.sh

@@ -0,0 +1,110 @@
+#!/bin/sh
+# Installs lazysecrets from its releases: the archive for this OS and CPU,
+# checked against the release's checksums.txt, into ~/.local/bin.
+#
+#   curl -fsSL https://git.kebcloud.no/keb/lazysecrets/raw/branch/main/install.sh | sh
+#   curl -fsSL https://git.kebcloud.no/keb/lazysecrets/raw/branch/main/install.sh | sh -s -- v0.2.0
+#
+# LAZYSECRETS_INSTALL_DIR installs somewhere else. macOS and Linux, arm64
+# and x86_64.
+#
+# Releases are on GitHub and git.kebcloud.no, tried in that order;
+# LAZYSECRETS_RELEASES (repository addresses, space-separated) uses others.
+set -eu
+
+repos="${LAZYSECRETS_RELEASES:-https://github.com/karleinarb/lazysecrets https://git.kebcloud.no/keb/lazysecrets}"
+dir="${LAZYSECRETS_INSTALL_DIR:-$HOME/.local/bin}"
+
+fail() {
+	echo "lazysecrets install: $*" >&2
+	exit 1
+}
+
+# Short timeouts, so a server that's down leaves time for the next.
+if command -v curl >/dev/null 2>&1; then
+	fetch() { curl -fsSL --connect-timeout 5 --max-time 15 "$1"; }
+	download() { curl -fsSL --connect-timeout 5 -o "$2" "$1"; }
+elif command -v wget >/dev/null 2>&1; then
+	fetch() { wget -qO- -T 15 "$1"; }
+	download() { wget -qO "$2" -T 30 "$1"; }
+else
+	fail "needs curl or wget"
+fi
+
+case "$(uname -s)" in
+Darwin) os=darwin ;;
+Linux) os=linux ;;
+*) fail "no release for $(uname -s); build it with: go install git.kebcloud.no/keb/lazysecrets/cmd/lazysecrets@latest" ;;
+esac
+case "$(uname -m)" in
+x86_64 | amd64) arch=amd64 ;;
+arm64 | aarch64) arch=arm64 ;;
+*) fail "no release for $(uname -m)" ;;
+esac
+
+# api is a repository's API: GitHub's, or Gitea's (and Forgejo's).
+api() {
+	case "$1" in
+	https://github.com/*) echo "https://api.github.com/repos/${1#https://github.com/}" ;;
+	*)
+		host=${1#*://}
+		host=${host%%/*}
+		echo "${1%%://*}://$host/api/v1/repos/${1#*://"$host"/}"
+		;;
+	esac
+}
+
+tag="${1:-}"
+if [ -z "$tag" ]; then
+	for repo in $repos; do
+		tag=$(fetch "$(api "$repo")/releases/latest" 2>/dev/null |
+			sed -n 's/.*"tag_name": *"\([^"]*\)".*/\1/p' | head -n 1) || tag=
+		[ -n "$tag" ] && break
+	done
+	[ -n "$tag" ] || fail "couldn't look up the latest release on $repos"
+fi
+case "$tag" in
+v*) ;;
+*) tag="v$tag" ;;
+esac
+version="${tag#v}"
+
+name="lazysecrets_${version}_${os}_${arch}"
+tmp=$(mktemp -d)
+trap 'rm -rf "$tmp"' EXIT
+
+# The archive and its checksums.txt from the first server that has both.
+from=
+for repo in $repos; do
+	base="$repo/releases/download/$tag"
+	if download "$base/checksums.txt" "$tmp/checksums.txt" 2>/dev/null; then
+		echo "Downloading lazysecrets $tag for $os/$arch from $repo"
+		if download "$base/$name.tar.gz" "$tmp/$name.tar.gz"; then
+			from=$repo
+			break
+		fi
+	fi
+done
+[ -n "$from" ] || fail "couldn't download $tag for $os/$arch from $repos"
+
+want=$(awk -v f="$name.tar.gz" '$2 == f { print $1 }' "$tmp/checksums.txt")
+[ -n "$want" ] || fail "$name.tar.gz isn't in checksums.txt"
+if command -v sha256sum >/dev/null 2>&1; then
+	got=$(sha256sum "$tmp/$name.tar.gz" | awk '{ print $1 }')
+else
+	got=$(shasum -a 256 "$tmp/$name.tar.gz" | awk '{ print $1 }')
+fi
+[ "$got" = "$want" ] || fail "checksum mismatch for $name.tar.gz: the download is damaged or not the release"
+
+tar -xzf "$tmp/$name.tar.gz" -C "$tmp"
+mkdir -p "$dir"
+# Replaced, not overwritten: a running lazysecrets keeps its binary.
+cp "$tmp/$name/lazysecrets" "$dir/.lazysecrets.new"
+chmod 755 "$dir/.lazysecrets.new"
+mv -f "$dir/.lazysecrets.new" "$dir/lazysecrets"
+echo "Installed $("$dir/lazysecrets" --version) in $dir"
+
+case ":$PATH:" in
+*":$dir:"*) ;;
+*) echo "$dir isn't on your PATH: add it to your shell's profile, e.g. export PATH=\"$dir:\$PATH\"" ;;
+esac