thodg/got/lib/got_lib_object.h

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  Commit

• Author : Stefan Sperling
  Date : 2021-07-08 11:03:29
  Hash : d5c81d44
  Message : verify object ID checksums while loose objects are being accessed

• lib/got_lib_object.h

• /*
   * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  struct got_object_id {
  	u_int8_t sha1[SHA1_DIGEST_LENGTH];
  };
  
  struct got_object {
  	int type;
  
  	int flags;
  #define GOT_OBJ_FLAG_PACKED		0x01
  #define GOT_OBJ_FLAG_DELTIFIED		0x02
  
  	size_t hdrlen;
  	size_t size;
  	struct got_object_id id;
  
  	int pack_idx;		/* if packed */
  	off_t pack_offset;	/* if packed */
  	struct got_delta_chain deltas; /* if deltified */
  	int refcnt;		/* > 0 if open and/or cached */
  };
  
  struct got_raw_object {
  	FILE *f;
  	uint8_t *data;
  	off_t size;
  	size_t hdrlen;
  	size_t blocksize;
  	uint8_t *read_buf;
  };
  
  struct got_commit_object {
  	struct got_object_id *tree_id;
  	unsigned int nparents;
  	struct got_object_id_queue parent_ids;
  	char *author;
  	time_t author_time;	/* UTC */
  	time_t author_gmtoff;
  	char *committer;
  	time_t committer_time;	/* UTC */
  	time_t committer_gmtoff;
  	char *logmsg;
  	int refcnt;		/* > 0 if open and/or cached */
  
  	int flags;
  #define GOT_COMMIT_FLAG_PACKED		0x01
  };
  
  struct got_tree_entry {
  	mode_t mode;
  	char name[NAME_MAX + 1 /* NUL */];
  	struct got_object_id id;
  	int idx;
  };
  
  struct got_tree_object {
  	int nentries;
  	struct got_tree_entry *entries;
  	int refcnt;
  };
  
  struct got_blob_object {
  	FILE *f;
  	uint8_t *data;
  	size_t hdrlen;
  	size_t blocksize;
  	uint8_t *read_buf;
  	struct got_object_id id;
  };
  
  struct got_tag_object {
  	struct got_object_id id;
  	int obj_type;
  	char *tag;
  	time_t tagger_time;
  	time_t tagger_gmtoff;
  	char *tagger;
  	char *tagmsg;
  	int refcnt;		/* > 0 if open and/or cached */
  };
  
  struct got_object_id *got_object_get_id(struct got_object *);
  const struct got_error *got_object_get_id_str(char **, struct got_object *);
  const struct got_error *got_object_get_path(char **, struct got_object_id *,
      struct got_repository *);
  const struct got_error *got_object_open_loose_fd(int *, struct got_object_id *,
      struct got_repository *);
  const struct got_error *got_object_open_packed(struct got_object **,
      struct got_object_id *, struct got_repository *);
  const struct got_error *got_object_read_header_privsep(struct got_object **,
      struct got_object_id *, struct got_repository *, int);
  const struct got_error *got_object_open(struct got_object **,
      struct got_repository *, struct got_object_id *);
  const struct got_error *got_object_raw_open(struct got_raw_object **,
      struct got_repository *, struct got_object_id *, size_t);
  void got_object_raw_rewind(struct got_raw_object *);
  size_t got_object_raw_get_hdrlen(struct got_raw_object *);
  const uint8_t *got_object_raw_get_read_buf(struct got_raw_object *);
  const struct got_error * got_object_raw_read_block(size_t *,
      struct got_raw_object *);
  const struct got_error *got_object_raw_close(struct got_raw_object *);
  const struct got_error *got_object_open_by_id_str(struct got_object **,
      struct got_repository *, const char *);
  void got_object_close(struct got_object *);
  const struct got_error *got_object_commit_open(struct got_commit_object **,
      struct got_repository *, struct got_object *);
  const struct got_error *got_object_tree_open(struct got_tree_object **,
      struct got_repository *, struct got_object *);
  const struct got_error *got_object_blob_open(struct got_blob_object **,
      struct got_repository *, struct got_object *, size_t);
  char *got_object_blob_id_str(struct got_blob_object*, char *, size_t);
  const struct got_error *got_object_tag_open(struct got_tag_object **,
      struct got_repository *, struct got_object *);
  const struct got_error *got_object_tree_entry_dup(struct got_tree_entry **,
      struct got_tree_entry *);
  
  const struct got_error *got_traverse_packed_commits(
      struct got_object_id_queue *, struct got_object_id *, const char *,
      struct got_repository *);