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/* apk_database.h - Alpine Package Keeper (APK)
 *
 * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
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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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 * 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
 * by the Free Software Foundation. See http://www.gnu.org/ for details.
 */

#ifndef APK_PKG_H
#define APK_PKG_H

#include "apk_version.h"
#include "apk_hash.h"
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#include "apk_io.h"
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struct apk_database;
struct apk_name;

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#define APK_SCRIPT_INVALID		-1
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#define APK_SCRIPT_PRE_INSTALL		0
#define APK_SCRIPT_POST_INSTALL		1
#define APK_SCRIPT_PRE_DEINSTALL	2
#define APK_SCRIPT_POST_DEINSTALL	3
#define APK_SCRIPT_PRE_UPGRADE		4
#define APK_SCRIPT_POST_UPGRADE		5
#define APK_SCRIPT_TRIGGER		6
#define APK_SCRIPT_MAX			7
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#define APK_SIGN_NONE			0
#define APK_SIGN_VERIFY			1
#define APK_SIGN_VERIFY_IDENTITY	2
#define APK_SIGN_GENERATE		4
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#define APK_SIGN_VERIFY_AND_GENERATE	5
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struct apk_sign_ctx {
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	int keys_fd;
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	int action;
	const EVP_MD *md;
	int num_signatures;
	int control_started : 1;
	int data_started : 1;
	int has_data_checksum : 1;
	int control_verified : 1;
	int data_verified : 1;
	char data_checksum[EVP_MAX_MD_SIZE];
	struct apk_checksum identity;
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	EVP_MD_CTX mdctx;
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	struct {
		apk_blob_t data;
		EVP_PKEY *pkey;
		char *identity;
	} signature;
};

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struct apk_dependency {
	struct apk_name *name;
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	apk_blob_t *version;
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	int result_mask;
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};
APK_ARRAY(apk_dependency_array, struct apk_dependency);

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#define APK_IPKGF_RUN_ALL_TRIGGERS	0x00000001

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struct apk_installed_package {
	struct apk_package *pkg;
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	unsigned int flags;
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	struct list_head installed_pkgs_list;
	struct list_head trigger_pkgs_list;
	struct hlist_head owned_dirs;
	apk_blob_t script[APK_SCRIPT_MAX];
	struct apk_string_array *triggers;
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	struct apk_string_array *pending_triggers;
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};

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#define APK_PKG_UNINSTALLABLE		((char*) -1)

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struct apk_package {
	apk_hash_node hash_node;
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	union {
		int state_int;
		void *state_ptr;
	};
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	struct apk_name *name;
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	struct apk_installed_package *ipkg;
	apk_blob_t *version, *arch, *license;
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	apk_blob_t *origin, *maintainer;
	char *url, *description, *commit;
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	char *filename;
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	struct apk_dependency_array *depends, *install_if;
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	size_t installed_size, size;
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	time_t build_time;
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	unsigned repos;
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	unsigned int topology_hard;
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	struct apk_checksum csum;
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};
APK_ARRAY(apk_package_array, struct apk_package *);

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#define PKG_VER_FMT		"%s-" BLOB_FMT
#define PKG_VER_PRINTF(pkg)	pkg->name->name, BLOB_PRINTF(*pkg->version)

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extern const char *apk_script_types[];

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void apk_sign_ctx_init(struct apk_sign_ctx *ctx, int action,
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		       struct apk_checksum *identity, int keys_fd);
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void apk_sign_ctx_free(struct apk_sign_ctx *ctx);
int apk_sign_ctx_process_file(struct apk_sign_ctx *ctx,
			      const struct apk_file_info *fi,
			      struct apk_istream *is);
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int apk_sign_ctx_parse_pkginfo_line(void *ctx, apk_blob_t line);
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int apk_sign_ctx_verify_tar(void *ctx, const struct apk_file_info *fi,
			    struct apk_istream *is);
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int apk_sign_ctx_mpart_cb(void *ctx, int part, apk_blob_t blob);
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int apk_dep_from_blob(struct apk_dependency *dep, struct apk_database *db,
		      apk_blob_t blob);
void apk_dep_from_pkg(struct apk_dependency *dep, struct apk_database *db,
		      struct apk_package *pkg);
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int apk_dep_is_satisfied(struct apk_dependency *dep, struct apk_package *pkg);
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void apk_blob_push_dep(apk_blob_t *to, struct apk_dependency *dep);

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int apk_deps_add(struct apk_dependency_array **depends,
		 struct apk_dependency *dep);
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void apk_deps_del(struct apk_dependency_array **deps,
		  struct apk_name *name);
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void apk_deps_parse(struct apk_database *db,
		    struct apk_dependency_array **depends,
		    apk_blob_t blob);
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int apk_deps_write(struct apk_dependency_array *deps, struct apk_ostream *os);
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int apk_script_type(const char *name);

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void apk_pkg_format_plain(struct apk_package *pkg, apk_blob_t to);
void apk_pkg_format_cache(struct apk_package *pkg, apk_blob_t to);
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struct apk_package *apk_pkg_new(void);
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int apk_pkg_read(struct apk_database *db, const char *name,
		 struct apk_sign_ctx *ctx, struct apk_package **pkg);
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void apk_pkg_free(struct apk_package *pkg);

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int apk_pkg_parse_name(apk_blob_t apkname, apk_blob_t *name, apk_blob_t *version);

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int apk_pkg_add_info(struct apk_database *db, struct apk_package *pkg,
		     char field, apk_blob_t value);
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struct apk_installed_package *apk_pkg_install(struct apk_database *db, struct apk_package *pkg);
void apk_pkg_uninstall(struct apk_database *db, struct apk_package *pkg);

int apk_ipkg_add_script(struct apk_installed_package *ipkg,
			struct apk_istream *is,
			unsigned int type, unsigned int size);
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int apk_ipkg_run_script(struct apk_installed_package *ipkg,
			struct apk_database *db,
			unsigned int type, char **argv);
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struct apk_package *apk_pkg_parse_index_entry(struct apk_database *db, apk_blob_t entry);
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int apk_pkg_write_index_entry(struct apk_package *pkg, struct apk_ostream *os);
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int apk_pkg_version_compare(struct apk_package *a, struct apk_package *b);

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#endif