git/archive.h
René Scharfe 96099726dd archive: expand only a single %(describe) per archive
Every %(describe) placeholder in $Format:...$ strings in files with the
attribute export-subst is expanded by calling git describe.  This can
potentially result in a lot of such calls per archive.  That's OK for
local repositories under control of the user of git archive, but could
be a problem for hosted repositories.

Expand only a single %(describe) placeholder per archive for now to
avoid denial-of-service attacks.  We can make this limit configurable
later if needed, but let's start out simple.

Reported-by: Jeff King <peff@peff.net>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-11 13:22:44 -08:00

62 lines
1.5 KiB
C

#ifndef ARCHIVE_H
#define ARCHIVE_H
#include "cache.h"
#include "pathspec.h"
struct repository;
struct pretty_print_context;
struct archiver_args {
struct repository *repo;
char *refname;
const char *prefix;
const char *base;
size_t baselen;
struct tree *tree;
const struct object_id *commit_oid;
const struct commit *commit;
timestamp_t time;
struct pathspec pathspec;
unsigned int verbose : 1;
unsigned int worktree_attributes : 1;
unsigned int convert : 1;
int compression_level;
struct string_list extra_files;
struct pretty_print_context *pretty_ctx;
};
/* main api */
int write_archive(int argc, const char **argv, const char *prefix,
struct repository *repo,
const char *name_hint, int remote);
const char *archive_format_from_filename(const char *filename);
/* archive backend stuff */
#define ARCHIVER_WANT_COMPRESSION_LEVELS 1
#define ARCHIVER_REMOTE 2
#define ARCHIVER_HIGH_COMPRESSION_LEVELS 4
struct archiver {
const char *name;
int (*write_archive)(const struct archiver *, struct archiver_args *);
unsigned flags;
void *data;
};
void register_archiver(struct archiver *);
void init_tar_archiver(void);
void init_zip_archiver(void);
void init_archivers(void);
typedef int (*write_archive_entry_fn_t)(struct archiver_args *args,
const struct object_id *oid,
const char *path, size_t pathlen,
unsigned int mode,
void *buffer, unsigned long size);
int write_archive_entries(struct archiver_args *args, write_archive_entry_fn_t write_entry);
#endif /* ARCHIVE_H */