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// SPDX-License-Identifier: AGPL-3.0-only
// SPDX-FileContributor: Runxi Yu <https://runxiyu.org>
package main
import (
"errors"
"fmt"
"net/http"
"strconv"
"strings"
"github.com/jackc/pgx/v5"
"go.lindenii.runxiyu.org/lindenii-common/clog"
)
type http_router_t struct{}
func (router *http_router_t) ServeHTTP(w http.ResponseWriter, r *http.Request) {
clog.Info("Incoming HTTP: " + r.RemoteAddr + " " + r.Method + " " + r.RequestURI)
var segments []string
var err error
var non_empty_last_segments_len int
var separator_index int
params := make(map[string]any)
if segments, _, err = parse_request_uri(r.RequestURI); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
non_empty_last_segments_len = len(segments)
if segments[len(segments)-1] == "" {
non_empty_last_segments_len--
}
if segments[0] == ":" {
if len(segments) < 2 {
http.Error(w, "Blank system endpoint", http.StatusNotFound)
return
} else if len(segments) == 2 && redirect_with_slash(w, r) {
return
}
switch segments[1] {
case "static":
static_handler.ServeHTTP(w, r)
return
case "source":
source_handler.ServeHTTP(w, r)
return
}
}
params["url_segments"] = segments
params["global"] = global_data
var _user_id int // 0 for none
_user_id, params["username"], err = get_user_info_from_request(r)
params["user_id"] = _user_id
if errors.Is(err, http.ErrNoCookie) {
} else if errors.Is(err, pgx.ErrNoRows) {
} else if err != nil {
http.Error(w, "Error getting user info from request: "+err.Error(), http.StatusInternalServerError)
return
}
if _user_id == 0 {
params["user_id_string"] = ""
} else {
params["user_id_string"] = strconv.Itoa(_user_id)
}
if segments[0] == ":" {
switch segments[1] {
case "login":
handle_login(w, r, params)
return
case "users":
handle_users(w, r, params)
return
case "gc":
handle_gc(w, r, params)
return
default:
http.Error(w, fmt.Sprintf("Unknown system module type: %s", segments[1]), http.StatusNotFound)
return
}
}
separator_index = -1
for i, part := range segments {
if part == ":" {
separator_index = i
break
}
}
params["separator_index"] = separator_index
var group_path []string
var module_type string
var module_name string
if separator_index > 0 {
group_path = segments[:separator_index]
} else {
group_path = segments[:len(segments)-1]
}
params["group_path"] = group_path
switch {
case non_empty_last_segments_len == 0:
handle_index(w, r, params)
case separator_index == -1:
if redirect_with_slash(w, r) {
return
}
handle_group_index(w, r, params)
case non_empty_last_segments_len == separator_index+1:
http.Error(w, "Illegal path 1", http.StatusNotImplemented)
return
case non_empty_last_segments_len == separator_index+2:
http.Error(w, "Illegal path 2", http.StatusNotImplemented)
return
default:
module_type = segments[separator_index+1]
module_name = segments[separator_index+2]
switch module_type {
case "repos":
params["repo_name"] = module_name
if non_empty_last_segments_len > separator_index+3 {
switch segments[separator_index+3] {
case "info":
if err = handle_repo_info(w, r, params); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
return
case "git-upload-pack":
if err = handle_upload_pack(w, r, params); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
return
}
}
if params["ref_type"], params["ref_name"], err = get_param_ref_and_type(r); err != nil {
if errors.Is(err, err_no_ref_spec) {
params["ref_type"] = ""
} else {
http.Error(w, "Error querying ref type: "+err.Error(), http.StatusInternalServerError)
return
}
}
// TODO: subgroups
if params["repo"], params["repo_description"], params["repo_id"], err = open_git_repo(r.Context(), group_path, module_name); err != nil {
http.Error(w, "Error opening repo: "+err.Error(), http.StatusInternalServerError)
return
}
if non_empty_last_segments_len == separator_index+3 {
if redirect_with_slash(w, r) {
return
}
handle_repo_index(w, r, params)
return
}
repo_feature := segments[separator_index+3]
switch repo_feature {
case "tree":
params["rest"] = strings.Join(segments[separator_index+4:], "/")
if len(segments) < separator_index+5 && redirect_with_slash(w, r) {
return
}
handle_repo_tree(w, r, params)
case "raw":
params["rest"] = strings.Join(segments[separator_index+4:], "/")
if len(segments) < separator_index+5 && redirect_with_slash(w, r) {
return
}
handle_repo_raw(w, r, params)
case "log":
if non_empty_last_segments_len > separator_index+4 {
http.Error(w, "Too many parameters", http.StatusBadRequest)
return
}
if redirect_with_slash(w, r) {
return
}
handle_repo_log(w, r, params)
case "commit":
if redirect_without_slash(w, r) {
return
}
params["commit_id"] = segments[separator_index+4]
handle_repo_commit(w, r, params)
case "contrib":
if redirect_with_slash(w, r) {
return
}
switch non_empty_last_segments_len {
case separator_index + 4:
handle_repo_contrib_index(w, r, params)
case separator_index + 5:
params["mr_id"] = segments[separator_index+4]
handle_repo_contrib_one(w, r, params)
default:
http.Error(w, "Too many parameters", http.StatusBadRequest)
}
default:
http.Error(w, fmt.Sprintf("Unknown repo feature: %s", repo_feature), http.StatusNotFound)
}
default:
http.Error(w, fmt.Sprintf("Unknown module type: %s", module_type), http.StatusNotFound)
}
}
}
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