1/* ui-clone.c: functions for http cloning, based on
  2 * git's http-backend.c by Shawn O. Pearce
  3 *
  4 * Copyright (C) 2008 Lars Hjemli
  5 *
  6 * Licensed under GNU General Public License v2
  7 *   (see COPYING for full license text)
  8 */
  9
 10#include "cgit.h"
 11#include "ui-clone.h"
 12#include "html.h"
 13#include "ui-shared.h"
 14
 15static int print_ref_info(const char *refname, const unsigned char *sha1,
 16                          int flags, void *cb_data)
 17{
 18	struct object *obj;
 19
 20	if (!(obj = parse_object(sha1)))
 21		return 0;
 22
 23	htmlf("%s\t%s\n", sha1_to_hex(sha1), refname);
 24	if (obj->type == OBJ_TAG) {
 25		if (!(obj = deref_tag(obj, refname, 0)))
 26			return 0;
 27		htmlf("%s\t%s^{}\n", sha1_to_hex(obj->sha1), refname);
 28	}
 29	return 0;
 30}
 31
 32static void print_pack_info(struct cgit_context *ctx)
 33{
 34	struct packed_git *pack;
 35	int ofs;
 36
 37	ctx->page.mimetype = "text/plain";
 38	ctx->page.filename = "objects/info/packs";
 39	cgit_print_http_headers(ctx);
 40	ofs = strlen(ctx->repo->path) + strlen("/objects/pack/");
 41	prepare_packed_git();
 42	for (pack = packed_git; pack; pack = pack->next)
 43		if (pack->pack_local)
 44			htmlf("P %s\n", pack->pack_name + ofs);
 45}
 46
 47static void send_file(struct cgit_context *ctx, char *path)
 48{
 49	struct stat st;
 50
 51	if (stat(path, &st)) {
 52		switch (errno) {
 53		case ENOENT:
 54			html_status(404, "Not found", 0);
 55			break;
 56		case EACCES:
 57			html_status(403, "Forbidden", 0);
 58			break;
 59		default:
 60			html_status(400, "Bad request", 0);
 61		}
 62		return;
 63	}
 64	ctx->page.mimetype = "application/octet-stream";
 65	ctx->page.filename = path;
 66	if (prefixcmp(ctx->repo->path, path))
 67		ctx->page.filename += strlen(ctx->repo->path) + 1;
 68	cgit_print_http_headers(ctx);
 69	html_include(path);
 70}
 71
 72void cgit_clone_info(struct cgit_context *ctx)
 73{
 74	if (!ctx->qry.path || strcmp(ctx->qry.path, "refs"))
 75		return;
 76
 77	ctx->page.mimetype = "text/plain";
 78	ctx->page.filename = "info/refs";
 79	cgit_print_http_headers(ctx);
 80	for_each_ref(print_ref_info, ctx);
 81}
 82
 83void cgit_clone_objects(struct cgit_context *ctx)
 84{
 85	if (!ctx->qry.path) {
 86		html_status(400, "Bad request", 0);
 87		return;
 88	}
 89
 90	if (!strcmp(ctx->qry.path, "info/packs")) {
 91		print_pack_info(ctx);
 92		return;
 93	}
 94
 95	send_file(ctx, git_path("objects/%s", ctx->qry.path));
 96}
 97
 98void cgit_clone_head(struct cgit_context *ctx)
 99{
100	send_file(ctx, git_path("%s", "HEAD"));
101}