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// SPDX-License-Identifier: AGPL-3.0-only
// SPDX-FileContributor: Runxi Yu <https://runxiyu.org>
package main
import (
"io"
"net/http"
"os"
"os/exec"
"github.com/jackc/pgx/v5/pgtype"
)
func handle_upload_pack(w http.ResponseWriter, r *http.Request, params map[string]any) (err error) {
var group_path []string
var repo_name string
var repo_path string
var stdout io.ReadCloser
var stdin io.WriteCloser
var cmd *exec.Cmd
group_path, repo_name = params["group_path"].([]string), params["repo_name"].(string)
if err := database.QueryRow(r.Context(), `
WITH RECURSIVE group_path_cte AS (
-- Start: match the first name in the path where parent_group IS NULL
SELECT
id,
parent_group,
name,
1 AS depth
FROM groups
WHERE name = ($1::text[])[1]
AND parent_group IS NULL
UNION ALL
-- Recurse: jion next segment of the path
SELECT
g.id,
g.parent_group,
g.name,
group_path_cte.depth + 1
FROM groups g
JOIN group_path_cte ON g.parent_group = group_path_cte.id
WHERE g.name = ($1::text[])[group_path_cte.depth + 1]
AND group_path_cte.depth + 1 <= cardinality($1::text[])
)
SELECT r.filesystem_path
FROM group_path_cte c
JOIN repos r ON r.group_id = c.id
WHERE c.depth = cardinality($1::text[])
AND r.name = $2
`,
pgtype.FlatArray[string](group_path),
repo_name,
).Scan(&repo_path); err != nil {
return err
}
w.Header().Set("Content-Type", "application/x-git-upload-pack-result")
w.Header().Set("Connection", "Keep-Alive")
w.Header().Set("Transfer-Encoding", "chunked")
w.WriteHeader(http.StatusOK)
cmd = exec.Command("git", "upload-pack", "--stateless-rpc", repo_path)
cmd.Env = append(os.Environ(), "LINDENII_FORGE_HOOKS_SOCKET_PATH="+config.Hooks.Socket)
if stdout, err = cmd.StdoutPipe(); err != nil {
return err
}
cmd.Stderr = cmd.Stdout
defer func() {
_ = stdout.Close()
}()
if stdin, err = cmd.StdinPipe(); err != nil {
return err
}
defer func() {
_ = stdin.Close()
}()
if err = cmd.Start(); err != nil {
return err
}
if _, err = io.Copy(stdin, r.Body); err != nil {
return err
}
if err = stdin.Close(); err != nil {
return err
}
if _, err = io.Copy(w, stdout); err != nil {
return err
}
if err = cmd.Wait(); err != nil {
return err
}
return nil
}
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