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	if (!strcmp(refname, "HEAD") || !prefixcmp(refname, "refs/heads/"))
 23		htmlf("%s\t%s\n", sha1_to_hex(sha1), refname);
 24	else if (!prefixcmp(refname, "refs/tags") && obj->type == OBJ_TAG) {
 25		if (!(obj = deref_tag(obj, refname, 0)))
 26			return 0;
 27		htmlf("%s\t%s\n", sha1_to_hex(sha1), refname);
 28		htmlf("%s\t%s^{}\n", sha1_to_hex(obj->sha1), refname);
 29	}
 30	return 0;
 31}
 32
 33static void print_pack_info(struct cgit_context *ctx)
 34{
 35	struct packed_git *pack;
 36	int ofs;
 37
 38	ctx->page.mimetype = "text/plain";
 39	ctx->page.filename = "objects/info/packs";
 40	cgit_print_http_headers(ctx);
 41	ofs = strlen(ctx->repo->path) + strlen("/objects/pack/");
 42	prepare_packed_git();
 43	for (pack = packed_git; pack; pack = pack->next)
 44		if (pack->pack_local)
 45			htmlf("P %s\n", pack->pack_name + ofs);
 46}
 47
 48static void send_file(struct cgit_context *ctx, char *path)
 49{
 50	struct stat st;
 51	int err;
 52
 53	if (stat(path, &st)) {
 54		switch (errno) {
 55		case ENOENT:
 56			err = 404;
 57			break;
 58		case EACCES:
 59			err = 403;
 60			break;
 61		default:
 62			err = 400;
 63		}
 64		html_status(err, 0);
 65		return;
 66	}
 67	ctx->page.mimetype = "application/octet-stream";
 68	ctx->page.filename = path;
 69	if (prefixcmp(ctx->repo->path, path))
 70		ctx->page.filename += strlen(ctx->repo->path) + 1;
 71	cgit_print_http_headers(ctx);
 72	html_include(path);
 73}
 74
 75void cgit_clone_info(struct cgit_context *ctx)
 76{
 77	if (!ctx->qry.path || strcmp(ctx->qry.path, "refs"))
 78		return;
 79
 80	ctx->page.mimetype = "text/plain";
 81	ctx->page.filename = "info/refs";
 82	cgit_print_http_headers(ctx);
 83	for_each_ref(print_ref_info, ctx);
 84}
 85
 86void cgit_clone_objects(struct cgit_context *ctx)
 87{
 88	if (!ctx->qry.path) {
 89		html_status(400, 0);
 90		return;
 91	}
 92
 93	if (!strcmp(ctx->qry.path, "info/packs")) {
 94		print_pack_info(ctx);
 95		return;
 96	}
 97
 98	send_file(ctx, git_path("objects/%s", ctx->qry.path));
 99}
100
101void cgit_clone_head(struct cgit_context *ctx)
102{
103	send_file(ctx, git_path("%s", "HEAD"));
104}