From d2f423521ec76406944ad83098ec33afe20c692b Mon Sep 17 00:00:00 2001
From: Kim Altintop <kim@eagain.io>
Date: Mon, 9 Jan 2023 13:18:33 +0100
Subject: This is it

Squashed commit of all the exploration history. Development starts here.

Signed-off-by: Kim Altintop <kim@eagain.io>
---
 src/cmd/drop.rs | 205 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 205 insertions(+)
 create mode 100644 src/cmd/drop.rs

(limited to 'src/cmd/drop.rs')

diff --git a/src/cmd/drop.rs b/src/cmd/drop.rs
new file mode 100644
index 0000000..208dbd6
--- /dev/null
+++ b/src/cmd/drop.rs
@@ -0,0 +1,205 @@
+// Copyright © 2022 Kim Altintop <kim@eagain.io>
+// SPDX-License-Identifier: GPL-2.0-only WITH openvpn-openssl-exception
+
+use std::{
+    ops::Deref,
+    path::PathBuf,
+};
+
+use anyhow::{
+    ensure,
+    Context,
+};
+use clap::ValueHint;
+use either::Either::Left;
+
+use crate::{
+    cmd,
+    metadata::{
+        self,
+        git::{
+            FromGit,
+            META_FILE_ALTERNATES,
+            META_FILE_MIRRORS,
+        },
+        IdentityId,
+        Signed,
+    },
+    patches::REF_HEADS_PATCHES,
+};
+
+mod bundles;
+pub use bundles::{
+    sync,
+    Bundles,
+    Sync,
+};
+
+mod edit;
+pub use edit::{
+    edit,
+    Edit,
+};
+
+mod init;
+pub use init::{
+    init,
+    Init,
+};
+
+mod serve;
+pub use serve::{
+    serve,
+    Serve,
+};
+
+mod snapshot;
+pub use snapshot::{
+    snapshot,
+    Snapshot,
+};
+
+mod show;
+pub use show::{
+    show,
+    Show,
+};
+
+mod unbundle;
+pub use unbundle::{
+    unbundle,
+    Unbundle,
+};
+
+#[derive(Debug, clap::Subcommand)]
+#[allow(clippy::large_enum_variant)]
+pub enum Cmd {
+    /// Initialise a drop
+    Init(Init),
+    /// Display the drop metadata
+    Show(Show),
+    /// Serve bundles and patch submission over HTTP
+    Serve(Serve),
+    /// Edit the drop metadata
+    Edit(Edit),
+    /// Manage patch bundles
+    #[clap(subcommand)]
+    Bundles(Bundles),
+    /// Take a snapshot of the patches received so far
+    Snapshot(Snapshot),
+    /// Unbundle the entire drop history
+    Unbundle(Unbundle),
+}
+
+impl Cmd {
+    pub fn run(self) -> cmd::Result<cmd::Output> {
+        match self {
+            Self::Init(args) => init(args).map(cmd::IntoOutput::into_output),
+            Self::Show(args) => show(args).map(cmd::IntoOutput::into_output),
+            Self::Serve(args) => serve(args).map(cmd::IntoOutput::into_output),
+            Self::Edit(args) => edit(args).map(cmd::IntoOutput::into_output),
+            Self::Bundles(cmd) => cmd.run(),
+            Self::Snapshot(args) => snapshot(args).map(cmd::IntoOutput::into_output),
+            Self::Unbundle(args) => unbundle(args).map(cmd::IntoOutput::into_output),
+        }
+    }
+}
+
+#[derive(Debug, clap::Args)]
+struct Common {
+    /// Path to the drop repository
+    #[clap(from_global)]
+    git_dir: PathBuf,
+    /// A list of paths to search for identity repositories
+    #[clap(
+        long,
+        value_parser,
+        value_name = "PATH",
+        env = "IT_ID_PATH",
+        default_value_t,
+        value_hint = ValueHint::DirPath,
+    )]
+    id_path: cmd::util::args::IdSearchPath,
+}
+
+fn find_id(
+    repo: &git2::Repository,
+    id_path: &[git2::Repository],
+    id: &IdentityId,
+) -> cmd::Result<Signed<metadata::Identity>> {
+    let signed = metadata::Identity::from_search_path(id_path, cmd::id::identity_ref(Left(id))?)?
+        .meta
+        .signed;
+
+    let verified_id = signed
+        .verify(cmd::find_parent(repo))
+        .with_context(|| format!("invalid identity {id}"))?;
+    ensure!(
+        &verified_id == id,
+        "ids do not match after verification: expected {id}, found {verified_id}",
+    );
+
+    Ok(signed)
+}
+
+#[derive(serde::Serialize, serde::Deserialize)]
+struct Editable {
+    description: metadata::drop::Description,
+    roles: metadata::drop::Roles,
+    custom: metadata::Custom,
+}
+
+impl From<metadata::Drop> for Editable {
+    fn from(
+        metadata::Drop {
+            description,
+            roles,
+            custom,
+            ..
+        }: metadata::Drop,
+    ) -> Self {
+        Self {
+            description,
+            roles,
+            custom,
+        }
+    }
+}
+
+impl TryFrom<Editable> for metadata::Drop {
+    type Error = crate::Error;
+
+    fn try_from(
+        Editable {
+            description,
+            roles,
+            custom,
+        }: Editable,
+    ) -> Result<Self, Self::Error> {
+        ensure!(!roles.root.ids.is_empty(), "drop role cannot be empty");
+        ensure!(
+            !roles.snapshot.ids.is_empty(),
+            "snapshot roles cannot be empty"
+        );
+        ensure!(
+            !roles.branches.is_empty(),
+            "at least one branch role is required"
+        );
+        for (name, ann) in &roles.branches {
+            ensure!(
+                !ann.role.ids.is_empty(),
+                "branch role {name} cannot be empty"
+            );
+            ensure!(name.starts_with("refs/heads/"), "not a branch {name}");
+            ensure!(name.deref() != REF_HEADS_PATCHES, "reserved branch {name}");
+        }
+
+        Ok(Self {
+            spec_version: crate::SPEC_VERSION,
+            description,
+            prev: None,
+            roles,
+            custom,
+        })
+    }
+}
-- 
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