/* ui-clone.c: functions for http cloning, based on * git's http-backend.c by Shawn O. Pearce * * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com> * * Licensed under GNU General Public License v2 *   (see COPYING for full license text) */ #include "cgit.h"#include "ui-clone.h"#include "html.h"#include "ui-shared.h"#include "packfile.h"#include "object-store.h" static int print_ref_info(const char *refname, const struct object_id *oid,                          int flags, void *cb_data){	struct object *obj; 	if (!(obj = parse_object(the_repository, oid)))		return 0; 	htmlf("%s\t%s\n", oid_to_hex(oid), refname);	if (obj->type == OBJ_TAG) {		if (!(obj = deref_tag(the_repository, obj, refname, 0)))			return 0;		htmlf("%s\t%s^{}\n", oid_to_hex(&obj->oid), refname);	}	return 0;} static void print_pack_info(void){	struct packed_git *pack;	char *offset; 	ctx.page.mimetype = "text/plain";	ctx.page.filename = "objects/info/packs";	cgit_print_http_headers();	reprepare_packed_git(the_repository);	for (pack = get_packed_git(the_repository); pack; pack = pack->next) {		if (pack->pack_local) {			offset = strrchr(pack->pack_name, '/');			if (offset && offset[1] != '\0')				++offset;			else				offset = pack->pack_name;			htmlf("P %s\n", offset);		}	}} static void send_file(const char *path){	struct stat st; 	if (stat(path, &st)) {		switch (errno) {		case ENOENT:			cgit_print_error_page(404, "Not found", "Not found");			break;		case EACCES:			cgit_print_error_page(403, "Forbidden", "Forbidden");			break;		default:			cgit_print_error_page(400, "Bad request", "Bad request");		}		return;	}	ctx.page.mimetype = "application/octet-stream";	ctx.page.filename = path;	skip_prefix(path, ctx.repo->path, &ctx.page.filename);	skip_prefix(ctx.page.filename, "/", &ctx.page.filename);	cgit_print_http_headers();	html_include(path);} void cgit_clone_info(void){	if (!ctx.qry.path || strcmp(ctx.qry.path, "refs")) {		cgit_print_error_page(400, "Bad request", "Bad request");		return;	} 	ctx.page.mimetype = "text/plain";	ctx.page.filename = "info/refs";	cgit_print_http_headers();	for_each_ref(print_ref_info, NULL);} void cgit_clone_objects(void){	char *p; 	if (!ctx.qry.path)		goto err; 	if (!strcmp(ctx.qry.path, "info/packs")) {		print_pack_info();		return;	} 	/* Avoid directory traversal by forbidding "..", but also work around	 * other funny business by just specifying a fairly strict format. For	 * example, now we don't have to stress out about the Cygwin port.	 */	for (p = ctx.qry.path; *p; ++p) {		if (*p == '.' && *(p + 1) == '.')			goto err;		if (!isalnum(*p) && *p != '/' && *p != '.' && *p != '-')			goto err;	} 	send_file(git_path("objects/%s", ctx.qry.path));	return; err:	cgit_print_error_page(400, "Bad request", "Bad request");} void cgit_clone_head(void){	send_file(git_path("%s", "HEAD"));}