mirror of
https://git.zx2c4.com/cgit/
synced 2024-10-31 15:20:18 +00:00
a4d1ca1dc6
This is finally a proper headerfile for the shared ui-functions which used to reside in cgit.h Signed-off-by: Lars Hjemli <hjemli@gmail.com>
115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/* ui-snapshot.c: generate snapshot of a commit
|
|
*
|
|
* Copyright (C) 2006 Lars Hjemli
|
|
*
|
|
* Licensed under GNU General Public License v2
|
|
* (see COPYING for full license text)
|
|
*/
|
|
|
|
#include "cgit.h"
|
|
#include "html.h"
|
|
#include "ui-shared.h"
|
|
|
|
static int write_compressed_tar_archive(struct archiver_args *args,const char *filter)
|
|
{
|
|
int rw[2];
|
|
pid_t gzpid;
|
|
int stdout2;
|
|
int status;
|
|
int rv;
|
|
|
|
stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing");
|
|
chk_zero(pipe(rw), "Opening pipe from compressor subprocess");
|
|
gzpid = chk_non_negative(fork(), "Forking compressor subprocess");
|
|
if(gzpid==0) {
|
|
/* child */
|
|
chk_zero(close(rw[1]), "Closing write end of pipe in child");
|
|
chk_zero(close(STDIN_FILENO), "Closing STDIN");
|
|
chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin");
|
|
execlp(filter,filter,NULL);
|
|
_exit(-1);
|
|
}
|
|
/* parent */
|
|
chk_zero(close(rw[0]), "Closing read end of pipe");
|
|
chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
|
|
|
|
rv = write_tar_archive(args);
|
|
|
|
chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor");
|
|
chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT");
|
|
chk_zero(close(stdout2), "Closing uncompressed STDOUT");
|
|
chk_zero(close(rw[1]), "Closing write end of pipe in parent");
|
|
chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process");
|
|
if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) )
|
|
cgit_print_error("Failed to compress archive");
|
|
|
|
return rv;
|
|
}
|
|
|
|
static int write_tar_gzip_archive(struct archiver_args *args)
|
|
{
|
|
return write_compressed_tar_archive(args,"gzip");
|
|
}
|
|
|
|
static int write_tar_bzip2_archive(struct archiver_args *args)
|
|
{
|
|
return write_compressed_tar_archive(args,"bzip2");
|
|
}
|
|
|
|
const struct cgit_snapshot_format cgit_snapshot_formats[] = {
|
|
{ ".zip", "application/x-zip", write_zip_archive, 0x1 },
|
|
{ ".tar.gz", "application/x-tar", write_tar_gzip_archive, 0x2 },
|
|
{ ".tar.bz2", "application/x-tar", write_tar_bzip2_archive, 0x4 },
|
|
{ ".tar", "application/x-tar", write_tar_archive, 0x8 },
|
|
{}
|
|
};
|
|
|
|
static int make_snapshot(const struct cgit_snapshot_format *format,
|
|
const char *hex, const char *prefix,
|
|
const char *filename)
|
|
{
|
|
struct archiver_args args;
|
|
struct commit *commit;
|
|
unsigned char sha1[20];
|
|
|
|
if(get_sha1(hex, sha1)) {
|
|
cgit_print_error(fmt("Bad object id: %s", hex));
|
|
return 1;
|
|
}
|
|
commit = lookup_commit_reference(sha1);
|
|
if(!commit) {
|
|
cgit_print_error(fmt("Not a commit reference: %s", hex));
|
|
return 1;
|
|
}
|
|
memset(&args, 0, sizeof(args));
|
|
args.base = fmt("%s/", prefix);
|
|
args.tree = commit->tree;
|
|
args.time = commit->date;
|
|
ctx.page.mimetype = xstrdup(format->mimetype);
|
|
ctx.page.filename = xstrdup(filename);
|
|
cgit_print_http_headers(&ctx);
|
|
format->write_func(&args);
|
|
return 0;
|
|
}
|
|
|
|
void cgit_print_snapshot(const char *head, const char *hex, const char *prefix,
|
|
const char *filename, int snapshots)
|
|
{
|
|
const struct cgit_snapshot_format* f;
|
|
int sl, fnl;
|
|
|
|
fnl = strlen(filename);
|
|
if (!hex)
|
|
hex = head;
|
|
for (f = cgit_snapshot_formats; f->suffix; f++) {
|
|
if (!(snapshots & f->bit))
|
|
continue;
|
|
sl = strlen(f->suffix);
|
|
if(fnl < sl || strcmp(&filename[fnl-sl], f->suffix))
|
|
continue;
|
|
make_snapshot(f, hex, prefix, filename);
|
|
return;
|
|
}
|
|
cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
|
|
}
|