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