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/* 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"
static int print_ref_info(const char *refname, const unsigned char *sha1,
int flags, void *cb_data)
{
struct object *obj;
if (!(obj = parse_object(sha1)))
return 0;
htmlf("%s\t%s\n", sha1_to_hex(sha1), refname);
if (obj->type == OBJ_TAG) {
if (!(obj = deref_tag(obj, refname, 0)))
return 0;
htmlf("%s\t%s^{}\n", sha1_to_hex(obj->sha1), refname);
}
return 0;
}
static void print_pack_info(void)
{
struct packed_git *pack;
int ofs;
ctx.page.mimetype = "text/plain";
ctx.page.filename = "objects/info/packs";
cgit_print_http_headers();
ofs = strlen(ctx.repo->path) + strlen("/objects/pack/");
prepare_packed_git();
for (pack = packed_git; pack; pack = pack->next)
if (pack->pack_local)
htmlf("P %s\n", pack->pack_name + ofs);
}
static void send_file(char *path)
{
struct stat st;
if (stat(path, &st)) {
switch (errno) {
case ENOENT:
html_status(404, "Not found", 0);
break;
case EACCES:
html_status(403, "Forbidden", 0);
break;
default:
html_status(400, "Bad request", 0);
}
return;
}
ctx.page.mimetype = "application/octet-stream";
ctx.page.filename = path;
if (!starts_with(ctx.repo->path, path))
ctx.page.filename += strlen(ctx.repo->path) + 1;
cgit_print_http_headers();
html_include(path);
}
static void dispatch_to_git_http_backend(void)
{
if (access(ctx.cfg.http_backend_path, X_OK) != -1) {
size_t git_root_len;
char *git_root = NULL;
/* git-http-backend does it's own URL parsing and concatenates
* GIT_PROJECT_ROOT and PATH_INFO to find the git repo.
* The root is the same as scan-path, but scan-path is not
* always available so we calculate the root path.
* Example:
* repo.path = /srv/git/some/more/dirs/
* qry.repo = some/more/dirs
* -> git_root = /srv/git/
*/
strip_suffix(ctx.repo->path, "/", &git_root_len);
strip_suffix_mem(ctx.repo->path, &git_root_len, ctx.qry.repo);
git_root = xmalloc(git_root_len + 1);
strncpy(git_root, ctx.repo->path, git_root_len);
git_root[git_root_len] = '\0';
setenv("GIT_PROJECT_ROOT", git_root, 1);
execl(ctx.cfg.http_backend_path, "git-http-backend", NULL);
} else {
fprintf(stderr, "[cgit] http-backend-path (%s) is not executable: %s\n",
ctx.cfg.http_backend_path, strerror(errno));
html_status(500, "Internal Server Error", 0);
}
}
void cgit_clone_info(void)
{
if (ctx.cfg.http_backend_path) {
return dispatch_to_git_http_backend();
}
if (!ctx.qry.path || strcmp(ctx.qry.path, "refs"))
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)
{
if (ctx.cfg.http_backend_path) {
return dispatch_to_git_http_backend();
}
if (!ctx.qry.path) {
html_status(400, "Bad request", 0);
return;
}
if (!strcmp(ctx.qry.path, "info/packs")) {
print_pack_info();
return;
}
send_file(git_path("objects/%s", ctx.qry.path));
}
void cgit_clone_head(void)
{
if (ctx.cfg.http_backend_path) {
return dispatch_to_git_http_backend();
}
send_file(git_path("%s", "HEAD"));
}
void cgit_clone_git_upload_pack(void)
{
if (ctx.cfg.http_backend_path) {
return dispatch_to_git_http_backend();
}
html_status(404, "Not found", 0);
}
void cgit_clone_git_receive_pack(void)
{
if (ctx.cfg.http_backend_path) {
return dispatch_to_git_http_backend();
}
html_status(404, "Not found", 0);
}
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