130 lines
4.3 KiB
C
130 lines
4.3 KiB
C
/* apk_io.h - Alpine Package Keeper (APK)
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*
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* Copyright (C) 2008-2011 Timo Teräs <timo.teras@iki.fi>
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation. See http://www.gnu.org/ for details.
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*/
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#ifndef APK_IO
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#define APK_IO
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#include <openssl/evp.h>
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#include "apk_defines.h"
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#include "apk_blob.h"
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#include "apk_hash.h"
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struct apk_id_cache {
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int root_fd;
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unsigned int genid;
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struct apk_hash uid_cache;
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struct apk_hash gid_cache;
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};
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struct apk_file_info {
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char *name;
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char *link_target;
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char *uname;
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char *gname;
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off_t size;
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uid_t uid;
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gid_t gid;
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mode_t mode;
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time_t mtime;
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dev_t device;
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struct apk_checksum csum;
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};
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struct apk_istream {
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ssize_t (*read)(void *stream, void *ptr, size_t size);
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void (*close)(void *stream);
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};
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#define APK_BSTREAM_SINGLE_READ 0x0001
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#define APK_BSTREAM_EOF 0x0002
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struct apk_bstream {
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unsigned int flags;
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apk_blob_t (*read)(void *stream, apk_blob_t token);
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void (*close)(void *stream, size_t *size);
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};
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struct apk_ostream {
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ssize_t (*write)(void *stream, const void *buf, size_t size);
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int (*close)(void *stream);
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};
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#define APK_MPART_DATA 1 /* data processed so far */
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#define APK_MPART_BOUNDARY 2 /* final part of data, before boundary */
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#define APK_MPART_END 3 /* signals end of stream */
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typedef int (*apk_multipart_cb)(void *ctx, int part, apk_blob_t data);
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struct apk_istream *apk_bstream_gunzip_mpart(struct apk_bstream *,
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apk_multipart_cb cb, void *ctx);
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static inline struct apk_istream *apk_bstream_gunzip(struct apk_bstream *bs)
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{
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return apk_bstream_gunzip_mpart(bs, NULL, NULL);
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}
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struct apk_ostream *apk_ostream_gzip(struct apk_ostream *);
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struct apk_ostream *apk_ostream_counter(off_t *);
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struct apk_istream *apk_istream_from_fd_pid(int fd, pid_t pid, int (*translate_status)(int));
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struct apk_istream *apk_istream_from_file(int atfd, const char *file);
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struct apk_istream *apk_istream_from_file_gz(int atfd, const char *file);
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struct apk_istream *apk_istream_from_url(const char *url);
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struct apk_istream *apk_istream_from_url_gz(const char *url);
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size_t apk_istream_skip(struct apk_istream *istream, size_t size);
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size_t apk_istream_splice(void *stream, int fd, size_t size,
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apk_progress_cb cb, void *cb_ctx);
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static inline struct apk_istream *apk_istream_from_fd(int fd)
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{
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return apk_istream_from_fd_pid(fd, 0, NULL);
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}
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struct apk_bstream *apk_bstream_from_istream(struct apk_istream *istream);
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struct apk_bstream *apk_bstream_from_fd_pid(int fd, pid_t pid, int (*translate_status)(int));
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struct apk_bstream *apk_bstream_from_file(int atfd, const char *file);
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struct apk_bstream *apk_bstream_from_url(const char *url);
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struct apk_bstream *apk_bstream_tee(struct apk_bstream *from, int atfd, const char *to);
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static inline struct apk_bstream *apk_bstream_from_fd(int fd)
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{
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return apk_bstream_from_fd_pid(fd, 0, NULL);
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}
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struct apk_ostream *apk_ostream_to_fd(int fd);
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struct apk_ostream *apk_ostream_to_file(int atfd, const char *file, const char *tmpfile, mode_t mode);
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struct apk_ostream *apk_ostream_to_file_gz(int atfd, const char *file, const char *tmpfile, mode_t mode);
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size_t apk_ostream_write_string(struct apk_ostream *ostream, const char *string);
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apk_blob_t apk_blob_from_istream(struct apk_istream *istream, size_t size);
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apk_blob_t apk_blob_from_file(int atfd, const char *file);
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#define APK_BTF_ADD_EOL 0x00000001
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int apk_blob_to_file(int atfd, const char *file, apk_blob_t b, unsigned int flags);
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#define APK_FI_NOFOLLOW 0x80000000
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int apk_file_get_info(int atfd, const char *filename, unsigned int flags,
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struct apk_file_info *fi);
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typedef int apk_dir_file_cb(void *ctx, int dirfd, const char *entry);
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int apk_dir_foreach_file(int dirfd, apk_dir_file_cb cb, void *ctx);
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int apk_move_file(int atfd, const char *from, const char *to);
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int apk_url_download(const char *url, int atfd, const char *file);
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const char *apk_url_local_file(const char *url);
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void apk_id_cache_init(struct apk_id_cache *idc, int root_fd);
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void apk_id_cache_free(struct apk_id_cache *idc);
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void apk_id_cache_reset(struct apk_id_cache *idc);
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uid_t apk_resolve_uid(struct apk_id_cache *idc, const char *username, uid_t default_uid);
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uid_t apk_resolve_gid(struct apk_id_cache *idc, const char *groupname, uid_t default_gid);
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#endif
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