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/* app_cache.c - Alpine Package Keeper (APK)
*
* Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
* Copyright (C) 2008-2011 Timo Teräs <timo.teras@iki.fi>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-only
*/
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <dirent.h>
#include <unistd.h>
#include <limits.h>
#include "apk_defines.h"
#include "apk_applet.h"
#include "apk_database.h"
#include "apk_package.h"
#include "apk_print.h"
#include "apk_solver.h"
#define CACHE_CLEAN BIT(0)
#define CACHE_DOWNLOAD BIT(1)
struct cache_ctx {
unsigned short solver_flags;
int add_dependencies : 1;
};
#define CACHE_OPTIONS(OPT) \
OPT(OPT_CACHE_add_dependencies, "add-dependencies") \
OPT(OPT_CACHE_available, APK_OPT_SH("a") "available") \
OPT(OPT_CACHE_ignore_conflict, "ignore-conflict") \
OPT(OPT_CACHE_latest, APK_OPT_SH("l") "latest") \
OPT(OPT_CACHE_upgrade, APK_OPT_SH("u") "upgrade") \
OPT(OPT_CACHE_simulate, APK_OPT_SH("s") "simulate") \
APK_OPT_APPLET(option_desc, CACHE_OPTIONS);
static int option_parse_applet(void *ctx, struct apk_db_options *dbopts, int opt, const char *optarg)
{
struct cache_ctx *cctx = (struct cache_ctx *) ctx;
switch (opt) {
case OPT_CACHE_add_dependencies:
cctx->add_dependencies = 1;
break;
case OPT_CACHE_available:
cctx->solver_flags |= APK_SOLVERF_AVAILABLE;
break;
case OPT_CACHE_ignore_conflict:
cctx->solver_flags |= APK_SOLVERF_IGNORE_CONFLICT;
break;
case OPT_CACHE_latest:
cctx->solver_flags |= APK_SOLVERF_LATEST;
break;
case OPT_CACHE_upgrade:
cctx->solver_flags |= APK_SOLVERF_UPGRADE;
break;
case OPT_CACHE_simulate:
apk_flags |= APK_SIMULATE;
break;
default:
return -ENOTSUP;
}
return 0;
}
static const struct apk_option_group optgroup_applet = {
.desc = option_desc,
.parse = option_parse_applet,
};
struct progress {
size_t done, total;
};
static void progress_cb(void *ctx, size_t bytes_done)
{
struct progress *prog = (struct progress *) ctx;
apk_print_progress(prog->done + bytes_done, prog->total);
}
static int cache_download(struct cache_ctx *cctx, struct apk_database *db, struct apk_string_array *args)
{
struct apk_changeset changeset = {};
struct apk_change *change;
struct apk_package *pkg;
struct apk_repository *repo;
struct apk_dependency_array *deps;
struct apk_dependency dep;
struct progress prog = { 0, 0 };
int i, r, ret = 0;
apk_dependency_array_init(&deps);
if (args->num == 1 || cctx->add_dependencies)
apk_dependency_array_copy(&deps, db->world);
for (i = 1; i < args->num; i++) {
apk_blob_t b = APK_BLOB_STR(args->item[i]);
apk_blob_pull_dep(&b, db, &dep);
if (APK_BLOB_IS_NULL(b)) {
apk_error("bad dependency: %s", args->item[i]);
return -EINVAL;
}
*apk_dependency_array_add(&deps) = dep;
}
r = apk_solver_solve(db, cctx->solver_flags, deps, &changeset);
apk_dependency_array_free(&deps);
if (r < 0) {
apk_error("Unable to select packages. Run apk fix.");
return r;
}
foreach_array_item(change, changeset.changes) {
pkg = change->new_pkg;
if (!pkg || (pkg->repos & db->local_repos) || !pkg->installed_size)
continue;
if (!apk_db_select_repo(db, pkg)) continue;
prog.total += pkg->size;
}
foreach_array_item(change, changeset.changes) {
pkg = change->new_pkg;
if (!pkg || (pkg->repos & db->local_repos) || !pkg->installed_size)
continue;
repo = apk_db_select_repo(db, pkg);
if (repo == NULL)
continue;
r = apk_cache_download(db, repo, pkg, APK_SIGN_VERIFY_IDENTITY, 0,
progress_cb, &prog);
if (r && r != -EALREADY) {
apk_error(PKG_VER_FMT ": %s", PKG_VER_PRINTF(pkg), apk_error_str(r));
ret++;
}
prog.done += pkg->size;
}
return ret;
}
static void cache_clean_item(struct apk_database *db, int static_cache, int dirfd, const char *name, struct apk_package *pkg)
{
char tmp[PATH_MAX];
apk_blob_t b;
int i;
if (!static_cache) {
if (strcmp(name, "installed") == 0) return;
if (pkg) {
if (apk_flags & APK_PURGE) {
if (db->permanent || !pkg->ipkg) goto delete;
}
if (pkg->repos & db->local_repos & ~BIT(APK_REPOSITORY_CACHED)) goto delete;
if (pkg->ipkg == NULL && !(pkg->repos & ~BIT(APK_REPOSITORY_CACHED))) goto delete;
return;
}
}
b = APK_BLOB_STR(name);
for (i = 0; i < db->num_repos; i++) {
/* Check if this is a valid index */
apk_repo_format_cache_index(APK_BLOB_BUF(tmp), &db->repos[i]);
if (apk_blob_compare(b, APK_BLOB_STR(tmp)) == 0) return;
}
delete:
if (apk_verbosity >= 2)
apk_message("deleting %s", name);
if (!(apk_flags & APK_SIMULATE)) {
if (unlinkat(dirfd, name, 0) < 0 && errno == EISDIR)
unlinkat(dirfd, name, AT_REMOVEDIR);
}
}
static int cache_clean(struct apk_database *db)
{
if (apk_db_cache_active(db)) {
int r = apk_db_cache_foreach_item(db, cache_clean_item, 0);
if (r) return r;
}
return apk_db_cache_foreach_item(db, cache_clean_item, 1);
}
static int cache_main(void *ctx, struct apk_database *db, struct apk_string_array *args)
{
struct cache_ctx *cctx = (struct cache_ctx *) ctx;
char *arg;
int r = 0, actions = 0;
if (args->num < 1)
return -EINVAL;
arg = args->item[0];
if (strcmp(arg, "sync") == 0) {
actions = CACHE_CLEAN | CACHE_DOWNLOAD;
} else if (strcmp(arg, "clean") == 0) {
actions = CACHE_CLEAN;
} else if (strcmp(arg, "purge") == 0) {
actions = CACHE_CLEAN;
apk_flags |= APK_PURGE;
} else if (strcmp(arg, "download") == 0) {
actions = CACHE_DOWNLOAD;
} else
return -EINVAL;
if (!apk_db_cache_active(db))
actions &= CACHE_CLEAN;
if ((actions & CACHE_DOWNLOAD) && (cctx->solver_flags || cctx->add_dependencies)) {
if (apk_db_repository_check(db) != 0) return 3;
}
if (r == 0 && (actions & CACHE_CLEAN))
r = cache_clean(db);
if (r == 0 && (actions & CACHE_DOWNLOAD))
r = cache_download(cctx, db, args);
return r;
}
static struct apk_applet apk_cache = {
.name = "cache",
.open_flags = APK_OPENF_READ|APK_OPENF_NO_SCRIPTS|APK_OPENF_CACHE_WRITE,
.context_size = sizeof(struct cache_ctx),
.optgroups = { &optgroup_global, &optgroup_applet },
.main = cache_main,
};
APK_DEFINE_APPLET(apk_cache);
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