apk-tools/src/database.c

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/* database.c - Alpine Package Keeper (APK)
*
* Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
* Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* 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.
*/
#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
#include <limits.h>
#include <unistd.h>
#include <malloc.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/file.h>
#include "apk_defines.h"
#include "apk_package.h"
#include "apk_database.h"
#include "apk_state.h"
#include "apk_applet.h"
const char * const apk_index_gz = "APK_INDEX.gz";
static const char * const apk_static_cache_dir = "var/lib/apk";
static const char * const apk_linked_cache_dir = "etc/apk/cache";
struct install_ctx {
struct apk_database *db;
struct apk_package *pkg;
int script;
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struct apk_db_dir_instance *diri;
struct apk_checksum data_csum;
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apk_progress_cb cb;
void *cb_ctx;
size_t installed_size;
size_t current_file_size;
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struct hlist_node **diri_node;
struct hlist_node **file_diri_node;
};
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static apk_blob_t pkg_name_get_key(apk_hash_item item)
{
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return APK_BLOB_STR(((struct apk_name *) item)->name);
}
static void pkg_name_free(struct apk_name *name)
{
free(name->name);
free(name->pkgs);
free(name);
}
static const struct apk_hash_ops pkg_name_hash_ops = {
.node_offset = offsetof(struct apk_name, hash_node),
.get_key = pkg_name_get_key,
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.hash_key = apk_blob_hash,
.compare = apk_blob_compare,
.delete_item = (apk_hash_delete_f) pkg_name_free,
};
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static apk_blob_t pkg_info_get_key(apk_hash_item item)
{
return APK_BLOB_CSUM(((struct apk_package *) item)->csum);
}
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static unsigned long csum_hash(apk_blob_t csum)
{
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/* Checksum's highest bits have the most "randomness", use that
* directly as hash */
return *(unsigned long *) csum.ptr;
}
static const struct apk_hash_ops pkg_info_hash_ops = {
.node_offset = offsetof(struct apk_package, hash_node),
.get_key = pkg_info_get_key,
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.hash_key = csum_hash,
.compare = apk_blob_compare,
.delete_item = (apk_hash_delete_f) apk_pkg_free,
};
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static apk_blob_t apk_db_dir_get_key(apk_hash_item item)
{
struct apk_db_dir *dir = (struct apk_db_dir *) item;
return APK_BLOB_PTR_LEN(dir->name, dir->namelen);
}
static const struct apk_hash_ops dir_hash_ops = {
.node_offset = offsetof(struct apk_db_dir, hash_node),
.get_key = apk_db_dir_get_key,
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.hash_key = apk_blob_hash,
.compare = apk_blob_compare,
.delete_item = (apk_hash_delete_f) free,
};
struct apk_db_file_hash_key {
apk_blob_t dirname;
apk_blob_t filename;
};
static unsigned long apk_db_file_hash_key(apk_blob_t _key)
{
struct apk_db_file_hash_key *key = (struct apk_db_file_hash_key *) _key.ptr;
return apk_blob_hash_seed(key->filename, apk_blob_hash(key->dirname));
}
static unsigned long apk_db_file_hash_item(apk_hash_item item)
{
struct apk_db_file *dbf = (struct apk_db_file *) item;
return apk_blob_hash_seed(APK_BLOB_PTR_LEN(dbf->name, dbf->namelen),
dbf->diri->dir->hash);
}
static int apk_db_file_compare_item(apk_hash_item item, apk_blob_t _key)
{
struct apk_db_file *dbf = (struct apk_db_file *) item;
struct apk_db_file_hash_key *key = (struct apk_db_file_hash_key *) _key.ptr;
struct apk_db_dir *dir = dbf->diri->dir;
int r;
r = apk_blob_compare(key->filename,
APK_BLOB_PTR_LEN(dbf->name, dbf->namelen));
if (r != 0)
return r;
r = apk_blob_compare(key->dirname,
APK_BLOB_PTR_LEN(dir->name, dir->namelen));
return r;
}
static const struct apk_hash_ops file_hash_ops = {
.node_offset = offsetof(struct apk_db_file, hash_node),
.hash_key = apk_db_file_hash_key,
.hash_item = apk_db_file_hash_item,
.compare_item = apk_db_file_compare_item,
.delete_item = (apk_hash_delete_f) free,
};
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struct apk_name *apk_db_query_name(struct apk_database *db, apk_blob_t name)
{
return (struct apk_name *) apk_hash_get(&db->available.names, name);
}
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struct apk_name *apk_db_get_name(struct apk_database *db, apk_blob_t name)
{
struct apk_name *pn;
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unsigned long hash = apk_hash_from_key(&db->available.names, name);
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pn = (struct apk_name *) apk_hash_get_hashed(&db->available.names, name, hash);
if (pn != NULL)
return pn;
pn = calloc(1, sizeof(struct apk_name));
if (pn == NULL)
return NULL;
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pn->name = apk_blob_cstr(name);
pn->id = db->name_id++;
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apk_hash_insert_hashed(&db->available.names, pn, hash);
return pn;
}
static void apk_db_dir_unref(struct apk_database *db, struct apk_db_dir *dir)
{
dir->refs--;
if (dir->refs > 0)
return;
db->installed.stats.dirs--;
if (dir->parent != NULL)
apk_db_dir_unref(db, dir->parent);
}
static struct apk_db_dir *apk_db_dir_ref(struct apk_db_dir *dir)
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{
dir->refs++;
return dir;
}
struct apk_db_dir *apk_db_dir_query(struct apk_database *db,
apk_blob_t name)
{
return (struct apk_db_dir *) apk_hash_get(&db->installed.dirs, name);
}
static struct apk_db_dir *apk_db_dir_get(struct apk_database *db,
apk_blob_t name)
{
struct apk_db_dir *dir;
apk_blob_t bparent;
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unsigned long hash = apk_hash_from_key(&db->installed.dirs, name);
int i;
if (name.len && name.ptr[name.len-1] == '/')
name.len--;
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dir = (struct apk_db_dir *) apk_hash_get_hashed(&db->installed.dirs, name, hash);
if (dir != NULL)
return apk_db_dir_ref(dir);
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db->installed.stats.dirs++;
dir = malloc(sizeof(*dir) + name.len + 1);
memset(dir, 0, sizeof(*dir));
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dir->refs = 1;
memcpy(dir->name, name.ptr, name.len);
dir->name[name.len] = 0;
dir->namelen = name.len;
dir->hash = hash;
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apk_hash_insert_hashed(&db->installed.dirs, dir, hash);
if (name.len == 0)
dir->parent = NULL;
else if (apk_blob_rsplit(name, '/', &bparent, NULL))
dir->parent = apk_db_dir_get(db, bparent);
else
dir->parent = apk_db_dir_get(db, APK_BLOB_NULL);
if (dir->parent != NULL)
dir->flags = dir->parent->flags;
for (i = 0; i < db->protected_paths->num; i++) {
if (db->protected_paths->item[i][0] == '-' &&
strcmp(&db->protected_paths->item[i][1], dir->name) == 0)
dir->flags &= ~APK_DBDIRF_PROTECTED;
else if (strcmp(db->protected_paths->item[i], dir->name) == 0)
dir->flags |= APK_DBDIRF_PROTECTED;
}
return dir;
}
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static struct apk_db_dir_instance *apk_db_diri_new(struct apk_database *db,
struct apk_package *pkg,
apk_blob_t name,
struct hlist_node ***after)
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{
struct apk_db_dir_instance *diri;
diri = calloc(1, sizeof(struct apk_db_dir_instance));
if (diri != NULL) {
hlist_add_after(&diri->pkg_dirs_list, *after);
*after = &diri->pkg_dirs_list.next;
diri->dir = apk_db_dir_get(db, name);
diri->pkg = pkg;
}
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return diri;
}
static void apk_db_diri_set(struct apk_db_dir_instance *diri, mode_t mode,
uid_t uid, gid_t gid)
{
diri->mode = mode;
diri->uid = uid;
diri->gid = gid;
}
static void apk_db_diri_mkdir(struct apk_db_dir_instance *diri)
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{
if (mkdir(diri->dir->name, diri->mode) == 0)
chown(diri->dir->name, diri->uid, diri->gid);
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}
static void apk_db_diri_rmdir(struct apk_db_dir_instance *diri)
{
if (diri->dir->refs == 1)
rmdir(diri->dir->name);
}
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static void apk_db_diri_free(struct apk_database *db,
struct apk_db_dir_instance *diri)
{
apk_db_dir_unref(db, diri->dir);
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free(diri);
}
struct apk_db_file *apk_db_file_query(struct apk_database *db,
apk_blob_t dir,
apk_blob_t name)
{
struct apk_db_file_hash_key key;
key = (struct apk_db_file_hash_key) {
.dirname = dir,
.filename = name,
};
return (struct apk_db_file *) apk_hash_get(&db->installed.files,
APK_BLOB_BUF(&key));
}
static struct apk_db_file *apk_db_file_get(struct apk_database *db,
struct apk_db_dir_instance *diri,
apk_blob_t name,
struct hlist_node ***after)
{
struct apk_db_file *file;
struct apk_db_file_hash_key key;
struct apk_db_dir *dir = diri->dir;
unsigned long hash;
key = (struct apk_db_file_hash_key) {
.dirname = APK_BLOB_PTR_LEN(dir->name, dir->namelen),
.filename = name,
};
hash = apk_blob_hash_seed(name, dir->hash);
file = (struct apk_db_file *) apk_hash_get_hashed(
&db->installed.files, APK_BLOB_BUF(&key), hash);
if (file != NULL)
return file;
file = malloc(sizeof(*file) + name.len + 1);
memset(file, 0, sizeof(*file));
memcpy(file->name, name.ptr, name.len);
file->name[name.len] = 0;
file->namelen = name.len;
file->diri = diri;
hlist_add_after(&file->diri_files_list, *after);
*after = &file->diri_files_list.next;
apk_hash_insert_hashed(&db->installed.files, file, hash);
db->installed.stats.files++;
return file;
}
static void apk_db_file_change_owner(struct apk_database *db,
struct apk_db_file *file,
struct apk_db_dir_instance *diri,
struct hlist_node ***after)
{
hlist_del(&file->diri_files_list, &file->diri->owned_files);
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file->diri = diri;
hlist_add_after(&file->diri_files_list, *after);
*after = &file->diri_files_list.next;
}
static void apk_db_pkg_rdepends(struct apk_database *db, struct apk_package *pkg)
{
int i, j;
if (pkg->depends == NULL)
return;
for (i = 0; i < pkg->depends->num; i++) {
struct apk_name *rname = pkg->depends->item[i].name;
if (rname->rdepends) {
for (j = 0; j < rname->rdepends->num; j++)
if (rname->rdepends->item[j] == pkg->name)
return;
}
*apk_name_array_add(&rname->rdepends) = pkg->name;
}
}
struct apk_package *apk_db_pkg_add(struct apk_database *db, struct apk_package *pkg)
{
struct apk_package *idb;
idb = apk_hash_get(&db->available.packages, APK_BLOB_CSUM(pkg->csum));
if (idb == NULL) {
idb = pkg;
apk_hash_insert(&db->available.packages, pkg);
*apk_package_array_add(&pkg->name->pkgs) = pkg;
apk_db_pkg_rdepends(db, pkg);
} else {
idb->repos |= pkg->repos;
if (idb->filename == NULL && pkg->filename != NULL) {
idb->filename = pkg->filename;
pkg->filename = NULL;
}
apk_pkg_free(pkg);
}
return idb;
}
int apk_db_index_read(struct apk_database *db, struct apk_bstream *bs, int repo)
{
struct apk_package *pkg = NULL;
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struct apk_db_dir_instance *diri = NULL;
struct apk_db_file *file = NULL;
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struct hlist_node **diri_node = NULL;
struct hlist_node **file_diri_node = NULL;
apk_blob_t token = APK_BLOB_STR("\n"), l;
int field;
while (!APK_BLOB_IS_NULL(l = bs->read(bs, token))) {
if (l.len < 2 || l.ptr[1] != ':') {
if (pkg == NULL)
continue;
if (repo != -1)
pkg->repos |= BIT(repo);
else
apk_pkg_set_state(db, pkg, APK_PKG_INSTALLED);
if (apk_db_pkg_add(db, pkg) != pkg && repo == -1) {
apk_error("Installed database load failed");
return -1;
}
pkg = NULL;
continue;
}
/* Get field */
field = l.ptr[0];
l.ptr += 2;
l.len -= 2;
/* If no package, create new */
if (pkg == NULL) {
pkg = apk_pkg_new();
diri = NULL;
diri_node = hlist_tail_ptr(&pkg->owned_dirs);
file_diri_node = NULL;
}
/* Standard index line? */
if (apk_pkg_add_info(db, pkg, field, l) == 0)
continue;
if (repo != -1) {
apk_error("Invalid index entry '%c'", field);
return -1;
}
/* Check FDB special entries */
switch (field) {
case 'F':
if (pkg->name == NULL) {
apk_error("FDB directory entry before package entry");
return -1;
}
diri = apk_db_diri_new(db, pkg, l, &diri_node);
file_diri_node = &diri->owned_files.first;
break;
case 'M':
if (diri == NULL) {
apk_error("FDB directory metadata entry before directory entry");
return -1;
}
diri->uid = apk_blob_pull_uint(&l, 10);
apk_blob_pull_char(&l, ':');
diri->gid = apk_blob_pull_uint(&l, 10);
apk_blob_pull_char(&l, ':');
diri->mode = apk_blob_pull_uint(&l, 8);
break;
case 'R':
if (diri == NULL) {
apk_error("FDB file entry before directory entry");
return -1;
}
file = apk_db_file_get(db, diri, l,
&file_diri_node);
break;
case 'Z':
if (file == NULL) {
apk_error("FDB checksum entry before file entry");
return -1;
}
apk_blob_pull_csum(&l, &file->csum);
break;
default:
apk_error("FDB entry '%c' unsupported", field);
return -1;
}
if (APK_BLOB_IS_NULL(l)) {
apk_error("FDB format error in entry '%c'", field);
return -1;
}
}
return 0;
}
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static int apk_db_write_fdb(struct apk_database *db, struct apk_ostream *os)
{
struct apk_package *pkg;
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struct apk_db_dir_instance *diri;
struct apk_db_file *file;
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struct hlist_node *c1, *c2;
char buf[1024];
apk_blob_t bbuf = APK_BLOB_BUF(buf);
int r;
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list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
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r = apk_pkg_write_index_entry(pkg, os);
if (r < 0)
return r;
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hlist_for_each_entry(diri, c1, &pkg->owned_dirs, pkg_dirs_list) {
apk_blob_push_blob(&bbuf, APK_BLOB_STR("F:"));
apk_blob_push_blob(&bbuf, APK_BLOB_PTR_LEN(diri->dir->name, diri->dir->namelen));
apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nM:"));
apk_blob_push_uint(&bbuf, diri->uid, 10);
apk_blob_push_blob(&bbuf, APK_BLOB_STR(":"));
apk_blob_push_uint(&bbuf, diri->gid, 10);
apk_blob_push_blob(&bbuf, APK_BLOB_STR(":"));
apk_blob_push_uint(&bbuf, diri->mode, 8);
apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
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hlist_for_each_entry(file, c2, &diri->owned_files, diri_files_list) {
apk_blob_push_blob(&bbuf, APK_BLOB_STR("R:"));
apk_blob_push_blob(&bbuf, APK_BLOB_PTR_LEN(file->name, file->namelen));
if (file->csum.type != APK_CHECKSUM_NONE) {
apk_blob_push_blob(&bbuf, APK_BLOB_STR("\nZ:"));
apk_blob_push_csum(&bbuf, &file->csum);
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}
apk_blob_push_blob(&bbuf, APK_BLOB_STR("\n"));
if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
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return -1;
bbuf = APK_BLOB_BUF(buf);
}
if (os->write(os, buf, bbuf.ptr - buf) != bbuf.ptr - buf)
return -1;
bbuf = APK_BLOB_BUF(buf);
}
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os->write(os, "\n", 1);
}
return 0;
}
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static int apk_db_scriptdb_write(struct apk_database *db, struct apk_ostream *os)
{
struct apk_package *pkg;
struct apk_script *script;
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struct hlist_node *c2;
struct apk_file_info fi;
char filename[256];
apk_blob_t bfn;
int r, i;
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list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
hlist_for_each_entry(script, c2, &pkg->scripts, script_list) {
fi = (struct apk_file_info) {
.name = filename,
.uname = "root",
.gname = "root",
.size = script->size,
.uid = 0,
.gid = 0,
.mode = 0755 | S_IFREG,
.mtime = time(NULL),
};
/* The scripts db expects file names in format:
* pkg-version.<hexdump of package checksum>.action */
bfn = APK_BLOB_BUF(filename);
apk_blob_push_blob(&bfn, APK_BLOB_STR(pkg->name->name));
apk_blob_push_blob(&bfn, APK_BLOB_STR("-"));
apk_blob_push_blob(&bfn, APK_BLOB_STR(pkg->version));
apk_blob_push_blob(&bfn, APK_BLOB_STR("."));
apk_blob_push_csum(&bfn, &pkg->csum);
apk_blob_push_blob(&bfn, APK_BLOB_STR("."));
apk_blob_push_blob(&bfn, APK_BLOB_STR(apk_script_types[script->type]));
apk_blob_push_blob(&bfn, APK_BLOB_PTR_LEN("", 1));
r = apk_write_tar_entry(os, &fi, script->script);
if (r < 0)
return r;
}
}
for (i = 0; i < 2; i++) {
r = apk_write_tar_entry(os, NULL, NULL);
if (r < 0)
return r;
}
return 0;
}
static int apk_db_scriptdb_read_v1(struct apk_database *db, struct apk_istream *is)
{
struct apk_package *pkg;
struct {
unsigned char md5sum[16];
unsigned int type;
unsigned int size;
} hdr;
struct apk_checksum csum;
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while (is->read(is, &hdr, sizeof(hdr)) == sizeof(hdr)) {
memcpy(csum.data, hdr.md5sum, sizeof(hdr.md5sum));
csum.type = APK_CHECKSUM_MD5;
pkg = apk_db_get_pkg(db, &csum);
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if (pkg != NULL)
apk_pkg_add_script(pkg, is, hdr.type, hdr.size);
else
apk_istream_skip(is, hdr.size);
}
return 0;
}
static int apk_read_script_archive_entry(void *ctx,
const struct apk_file_info *ae,
struct apk_istream *is)
{
struct apk_database *db = (struct apk_database *) ctx;
struct apk_package *pkg;
char *fncsum, *fnaction;
struct apk_checksum csum;
apk_blob_t blob;
int type;
if (!S_ISREG(ae->mode))
return 0;
/* The scripts db expects file names in format:
* pkgname-version.<hexdump of package checksum>.action */
fnaction = memrchr(ae->name, '.', strlen(ae->name));
if (fnaction == NULL || fnaction == ae->name)
return 0;
fncsum = memrchr(ae->name, '.', fnaction - ae->name - 1);
if (fncsum == NULL)
return 0;
fnaction++;
fncsum++;
/* Parse it */
type = apk_script_type(fnaction);
if (type == APK_SCRIPT_INVALID)
return 0;
blob = APK_BLOB_PTR_PTR(fncsum, fnaction - 2);
apk_blob_pull_csum(&blob, &csum);
/* Attach script */
pkg = apk_db_get_pkg(db, &csum);
if (pkg != NULL)
apk_pkg_add_script(pkg, is, type, ae->size);
return 0;
}
static int apk_db_read_state(struct apk_database *db, int flags)
{
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struct apk_istream *is;
struct apk_bstream *bs;
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apk_blob_t blob;
int i;
/* Read:
* 1. installed repository
* 2. source repositories
* 3. master dependencies
* 4. package statuses
* 5. files db
* 6. script db
*/
fchdir(db->root_fd);
if (!(flags & APK_OPENF_NO_WORLD)) {
blob = apk_blob_from_file("var/lib/apk/world");
if (APK_BLOB_IS_NULL(blob))
return -ENOENT;
apk_deps_parse(db, &db->world, blob);
free(blob.ptr);
for (i = 0; i < db->world->num; i++)
db->world->item[i].name->flags |= APK_NAME_TOPLEVEL;
}
if (!(flags & APK_OPENF_NO_INSTALLED)) {
bs = apk_bstream_from_file("var/lib/apk/installed");
if (bs != NULL) {
apk_db_index_read(db, bs, -1);
bs->close(bs, NULL);
}
}
if (!(flags & APK_OPENF_NO_SCRIPTS)) {
is = apk_istream_from_file("var/lib/apk/scripts.tar");
if (is != NULL) {
apk_parse_tar(is, apk_read_script_archive_entry, db);
} else {
is = apk_istream_from_file("var/lib/apk/scripts");
if (is != NULL)
apk_db_scriptdb_read_v1(db, is);
}
if (is != NULL)
is->close(is);
}
return 0;
}
static int add_protected_path(void *ctx, apk_blob_t blob)
{
struct apk_database *db = (struct apk_database *) ctx;
*apk_string_array_add(&db->protected_paths) = apk_blob_cstr(blob);
return 0;
}
static int apk_db_create(struct apk_database *db)
{
apk_blob_t deps = APK_BLOB_STR("busybox alpine-baselayout "
"apk-tools alpine-conf");
int fd;
fchdir(db->root_fd);
mkdir("tmp", 01777);
mkdir("dev", 0755);
mknod("dev/null", 0666, makedev(1, 3));
mkdir("var", 0755);
mkdir("var/lib", 0755);
mkdir("var/lib/apk", 0755);
fd = creat("var/lib/apk/world", 0644);
if (fd < 0)
return -errno;
write(fd, deps.ptr, deps.len);
close(fd);
return 0;
}
static void handle_alarm(int sig)
{
}
int apk_db_open(struct apk_database *db, const char *root, unsigned int flags)
{
const char *apk_repos = getenv("APK_REPOS"), *msg = NULL;
struct apk_repository_url *repo = NULL;
struct stat st;
apk_blob_t blob;
int r;
memset(db, 0, sizeof(*db));
apk_hash_init(&db->available.names, &pkg_name_hash_ops, 1000);
apk_hash_init(&db->available.packages, &pkg_info_hash_ops, 4000);
apk_hash_init(&db->installed.dirs, &dir_hash_ops, 1000);
apk_hash_init(&db->installed.files, &file_hash_ops, 4000);
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list_init(&db->installed.packages);
db->cache_dir = apk_static_cache_dir;
if (root != NULL) {
fchdir(apk_cwd_fd);
db->root = strdup(root);
db->root_fd = open(root, O_RDONLY);
if (db->root_fd < 0 && (flags & APK_OPENF_CREATE)) {
mkdir(db->root, 0755);
db->root_fd = open(root, O_RDONLY);
}
if (db->root_fd < 0) {
msg = "Unable to open root";
goto ret_errno;
}
fchdir(db->root_fd);
if (stat(apk_linked_cache_dir, &st) == 0 && S_ISDIR(st.st_mode))
db->cache_dir = apk_linked_cache_dir;
if (flags & APK_OPENF_WRITE) {
db->lock_fd = open("var/lib/apk/lock",
O_CREAT | O_WRONLY, 0400);
if (db->lock_fd < 0 && errno == ENOENT &&
(flags & APK_OPENF_CREATE)) {
r = apk_db_create(db);
if (r != 0) {
msg = "Unable to create database";
goto ret_r;
}
db->lock_fd = open("var/lib/apk/lock",
O_CREAT | O_WRONLY, 0400);
}
if (db->lock_fd < 0 ||
flock(db->lock_fd, LOCK_EX | LOCK_NB) < 0) {
if (apk_wait) {
struct sigaction sa, old_sa;
apk_message("Waiting for repository lock");
memset(&sa, 0, sizeof sa);
sa.sa_handler = handle_alarm;
sa.sa_flags = SA_ONESHOT;
sigaction(SIGALRM, &sa, &old_sa);
alarm(apk_wait);
if (flock(db->lock_fd, LOCK_EX) < 0) {
msg = "Unable to lock database";
goto ret_errno;
}
alarm(0);
sigaction(SIGALRM, &old_sa, NULL);
}
}
}
}
blob = APK_BLOB_STR("etc:-etc/init.d");
apk_blob_for_each_segment(blob, ":", add_protected_path, db);
if (root != NULL) {
r = apk_db_read_state(db, flags);
if (r == -ENOENT && (flags & APK_OPENF_CREATE)) {
r = apk_db_create(db);
if (r != 0) {
msg = "Unable to create database";
goto ret_r;
}
r = apk_db_read_state(db, flags);
}
if (r != 0) {
msg = "Unable to read database state";
goto ret_r;
}
if (!(flags & APK_OPENF_NO_REPOS)) {
if (apk_repos == NULL)
apk_repos = "/etc/apk/repositories";
blob = apk_blob_from_file(apk_repos);
if (!APK_BLOB_IS_NULL(blob)) {
apk_blob_for_each_segment(blob, "\n",
apk_db_add_repository, db);
free(blob.ptr);
}
}
}
if (!(flags & APK_OPENF_NO_REPOS)) {
list_for_each_entry(repo, &apk_repository_list.list, list)
apk_db_add_repository(db, APK_BLOB_STR(repo->url));
}
fchdir(apk_cwd_fd);
return 0;
ret_errno:
r = -errno;
ret_r:
if (msg != NULL)
apk_error("%s: %s", msg, strerror(-r));
apk_db_close(db);
fchdir(apk_cwd_fd);
return r;
}
struct write_ctx {
struct apk_database *db;
int fd;
};
int apk_db_write_config(struct apk_database *db)
{
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struct apk_ostream *os;
if (db->root == NULL)
return 0;
if (db->lock_fd == 0) {
apk_error("Refusing to write db without write lock!");
return -1;
}
fchdir(db->root_fd);
os = apk_ostream_to_file("var/lib/apk/world", 0644);
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if (os == NULL)
return -1;
apk_deps_write(db->world, os);
os->write(os, "\n", 1);
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os->close(os);
os = apk_ostream_to_file("var/lib/apk/installed.new", 0644);
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if (os == NULL)
return -1;
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apk_db_write_fdb(db, os);
os->close(os);
if (rename("var/lib/apk/installed.new", "var/lib/apk/installed") < 0)
return -errno;
os = apk_ostream_to_file("var/lib/apk/scripts.tar.new", 0644);
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if (os == NULL)
return -1;
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apk_db_scriptdb_write(db, os);
os->close(os);
if (rename("var/lib/apk/scripts.tar.new", "var/lib/apk/scripts.tar") < 0)
return -errno;
unlink("var/lib/apk/scripts");
return 0;
}
void apk_db_close(struct apk_database *db)
{
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struct apk_package *pkg;
struct apk_db_dir_instance *diri;
struct hlist_node *dc, *dn;
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int i;
list_for_each_entry(pkg, &db->installed.packages, installed_pkgs_list) {
hlist_for_each_entry_safe(diri, dc, dn, &pkg->owned_dirs, pkg_dirs_list) {
apk_db_diri_free(db, diri);
}
}
for (i = 0; i < db->num_repos; i++) {
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free(db->repos[i].url);
}
if (db->protected_paths) {
for (i = 0; i < db->protected_paths->num; i++)
free(db->protected_paths->item[i]);
free(db->protected_paths);
}
if (db->world)
free(db->world);
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apk_hash_free(&db->available.names);
apk_hash_free(&db->available.packages);
apk_hash_free(&db->installed.files);
apk_hash_free(&db->installed.dirs);
if (db->root_fd)
close(db->root_fd);
if (db->lock_fd)
close(db->lock_fd);
if (db->root != NULL)
free(db->root);
}
int apk_db_cache_active(struct apk_database *db)
{
return db->cache_dir != apk_static_cache_dir;
}
struct apk_package *apk_db_get_pkg(struct apk_database *db,
struct apk_checksum *csum)
{
return apk_hash_get(&db->available.packages, APK_BLOB_CSUM(*csum));
}
struct apk_package *apk_db_get_file_owner(struct apk_database *db,
apk_blob_t filename)
{
struct apk_db_file *dbf;
struct apk_db_file_hash_key key;
if (filename.len && filename.ptr[0] == '/')
filename.len--, filename.ptr++;
if (!apk_blob_rsplit(filename, '/', &key.dirname, &key.filename))
return NULL;
dbf = (struct apk_db_file *) apk_hash_get(&db->installed.files,
APK_BLOB_BUF(&key));
if (dbf == NULL)
return NULL;
return dbf->diri->pkg;
}
struct apk_package *apk_db_pkg_add_file(struct apk_database *db, const char *file)
{
struct apk_package *info;
info = apk_pkg_read(db, file);
if (info != NULL)
info = apk_db_pkg_add(db, info);
return info;
}
struct index_write_ctx {
struct apk_ostream *os;
int count;
};
static int write_index_entry(apk_hash_item item, void *ctx)
{
struct index_write_ctx *iwctx = (struct index_write_ctx *) ctx;
struct apk_package *pkg = (struct apk_package *) item;
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int r;
if (pkg->filename == NULL)
return 0;
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r = apk_pkg_write_index_entry(pkg, iwctx->os);
if (r < 0)
return r;
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2009-04-16 14:05:27 +00:00
if (iwctx->os->write(iwctx->os, "\n", 1) != 1)
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return -1;
iwctx->count++;
return 0;
}
int apk_db_index_write(struct apk_database *db, struct apk_ostream *os)
{
struct index_write_ctx ctx = { os, 0 };
apk_hash_foreach(&db->available.packages, write_index_entry, &ctx);
return ctx.count;
}
static void apk_db_cache_get_name(char *buf, size_t bufsz,
struct apk_database *db,
struct apk_checksum *csum,
const char *file, int temp)
{
char csumstr[APK_CACHE_CSUM_BYTES*2+1];
apk_blob_t bbuf = APK_BLOB_BUF(csumstr);
apk_blob_push_hexdump(&bbuf,
APK_BLOB_PTR_LEN((char *) csum->data, APK_CACHE_CSUM_BYTES));
apk_blob_push_blob(&bbuf, APK_BLOB_PTR_LEN("", 1));
snprintf(buf, bufsz, "%s/%s/%s.%s%s",
db->root, db->cache_dir, csumstr, file, temp ? ".new" : "");
}
static struct apk_bstream *apk_db_cache_open(struct apk_database *db,
struct apk_checksum *csum,
const char *file)
{
char tmp[256];
if (db->root == NULL)
return NULL;
apk_db_cache_get_name(tmp, sizeof(tmp), db, csum, file, FALSE);
return apk_bstream_from_file(tmp);
}
static struct apk_bstream *apk_repository_file_open(struct apk_repository *repo,
const char *file)
{
char tmp[256];
snprintf(tmp, sizeof(tmp), "%s/%s", repo->url, file);
return apk_bstream_from_url(tmp);
}
int apk_cache_download(struct apk_database *db, struct apk_checksum *csum,
const char *url, const char *item)
{
char tmp[256], tmp2[256];
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int r;
snprintf(tmp, sizeof(tmp), "%s/%s", url, item);
apk_message("fetch %s", tmp);
if (apk_flags & APK_SIMULATE)
return 0;
apk_db_cache_get_name(tmp2, sizeof(tmp2), db, csum, item, TRUE);
r = apk_url_download(tmp, tmp2);
if (r < 0)
return r;
apk_db_cache_get_name(tmp, sizeof(tmp), db, csum, item, FALSE);
if (rename(tmp2, tmp) < 0)
return -errno;
return 0;
}
int apk_cache_exists(struct apk_database *db, struct apk_checksum *csum,
const char *item)
{
char tmp[256];
if (db->root == NULL)
return 0;
apk_db_cache_get_name(tmp, sizeof(tmp), db, csum, item, FALSE);
return access(tmp, R_OK | W_OK) == 0;
}
int apk_repository_update(struct apk_database *db, struct apk_repository *repo)
{
if (repo->csum.type == APK_CHECKSUM_NONE)
return 0;
return apk_cache_download(db, &repo->csum, repo->url, apk_index_gz);
}
int apk_db_add_repository(apk_database_t _db, apk_blob_t repository)
{
struct apk_database *db = _db.db;
struct apk_bstream *bs = NULL;
struct apk_repository *repo;
int r, n = 1;
if (repository.ptr == NULL || *repository.ptr == '\0'
|| *repository.ptr == '#')
return 0;
if (db->num_repos >= APK_MAX_REPOS)
return -1;
r = db->num_repos++;
repo = &db->repos[r];
*repo = (struct apk_repository) {
.url = apk_blob_cstr(repository),
};
if (apk_url_local_file(repo->url) == NULL) {
apk_blob_checksum(repository, apk_default_checksum(), &repo->csum);
if (apk_flags & APK_UPDATE_CACHE)
n = apk_repository_update(db, repo);
bs = apk_db_cache_open(db, &repo->csum, apk_index_gz);
if (bs == NULL) {
if (n == 1)
n = apk_repository_update(db, repo);
if (n < 0)
return n;
bs = apk_db_cache_open(db, &repo->csum, apk_index_gz);
}
} else {
bs = apk_repository_file_open(repo, apk_index_gz);
}
bs = apk_bstream_from_istream(apk_bstream_gunzip(bs));
if (bs == NULL) {
apk_warning("Failed to open index for %s", repo->url);
return -1;
}
apk_db_index_read(db, bs, r);
bs->close(bs, NULL);
return 0;
}
static void extract_cb(void *_ctx, size_t progress)
{
struct install_ctx *ctx = (struct install_ctx *) _ctx;
if (ctx->cb) {
size_t size = ctx->installed_size;
size += muldiv(progress, ctx->current_file_size, APK_PROGRESS_SCALE);
if (size > ctx->pkg->installed_size)
size = ctx->pkg->installed_size;
ctx->cb(ctx->cb_ctx, muldiv(APK_PROGRESS_SCALE, size, ctx->pkg->installed_size));
}
}
2008-11-07 15:11:08 +00:00
static int apk_db_install_archive_entry(void *_ctx,
const struct apk_file_info *ae,
2008-11-07 15:11:08 +00:00
struct apk_istream *is)
{
2008-11-07 15:11:08 +00:00
struct install_ctx *ctx = (struct install_ctx *) _ctx;
struct apk_database *db = ctx->db;
2009-01-06 17:44:54 +00:00
struct apk_package *pkg = ctx->pkg, *opkg;
apk_blob_t name = APK_BLOB_STR(ae->name), bdir, bfile;
struct apk_db_dir_instance *diri = ctx->diri;
struct apk_db_file *file;
struct apk_file_info fi;
char alt_name[PATH_MAX];
const char *p;
2008-11-07 11:05:55 +00:00
int r = 0, type = APK_SCRIPT_INVALID;
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/* Package metainfo and script processing */
if (ae->name[0] == '.') {
/* APK 2.0 format */
type = apk_script_type(&ae->name[1]);
if (type == APK_SCRIPT_INVALID)
2008-11-07 11:05:55 +00:00
return 0;
} else if (strncmp(ae->name, "var/db/apk/", 11) == 0) {
/* APK 1.0 format */
p = &ae->name[11];
if (strncmp(p, pkg->name->name, strlen(pkg->name->name)) != 0)
return 0;
p += strlen(pkg->name->name) + 1;
if (strncmp(p, pkg->version, strlen(pkg->version)) != 0)
return 0;
p += strlen(pkg->version) + 1;
type = apk_script_type(p);
if (type == APK_SCRIPT_INVALID)
return 0;
2008-11-07 11:05:55 +00:00
}
2008-11-07 11:05:55 +00:00
/* Handle script */
if (type != APK_SCRIPT_INVALID) {
2008-11-07 15:11:08 +00:00
apk_pkg_add_script(pkg, is, type, ae->size);
if (type == ctx->script) {
r = apk_pkg_run_script(pkg, db->root_fd, ctx->script);
if (r != 0)
apk_error("%s-%s: Failed to execute pre-install/upgrade script",
pkg->name->name, pkg->version);
}
return r;
}
/* Show progress */
if (ctx->cb) {
size_t size = ctx->installed_size;
if (size > pkg->installed_size)
size = pkg->installed_size;
ctx->cb(ctx->cb_ctx, muldiv(APK_PROGRESS_SCALE, size, pkg->installed_size));
}
2008-11-07 11:05:55 +00:00
/* Installable entry */
ctx->current_file_size = apk_calc_installed_size(ae->size);
if (!S_ISDIR(ae->mode)) {
2009-01-06 17:44:54 +00:00
if (!apk_blob_rsplit(name, '/', &bdir, &bfile))
return 0;
if (bfile.len > 6 && memcmp(bfile.ptr, ".keep_", 6) == 0)
return 0;
/* Make sure the file is part of the cached directory tree */
if (diri == NULL ||
apk_blob_compare(APK_BLOB_PTR_LEN(diri->dir->name, diri->dir->namelen), bdir) != 0) {
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struct hlist_node *n;
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hlist_for_each_entry(diri, n, &pkg->owned_dirs, pkg_dirs_list) {
if (apk_blob_compare(APK_BLOB_PTR_LEN(diri->dir->name, diri->dir->namelen), bdir) == 0)
2009-01-06 17:44:54 +00:00
break;
}
if (diri == NULL) {
apk_error("%s: File '%*s' entry without directory entry.\n",
pkg->name->name, name.len, name.ptr);
return -1;
}
ctx->diri = diri;
ctx->file_diri_node = hlist_tail_ptr(&diri->owned_files);
2009-01-06 17:44:54 +00:00
}
file = apk_db_file_get(db, diri, bfile, &ctx->file_diri_node);
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if (file == NULL) {
apk_error("%s: Failed to create fdb entry for '%*s'\n",
pkg->name->name, name.len, name.ptr);
return -1;
}
if (file->diri != diri) {
2009-01-06 17:44:54 +00:00
opkg = file->diri->pkg;
if (opkg->name != pkg->name) {
if (!(apk_flags & APK_FORCE)) {
2009-03-04 06:36:56 +00:00
apk_error("%s: Trying to overwrite %s "
"owned by %s.\n",
pkg->name->name, ae->name,
opkg->name->name);
return -1;
}
2009-03-04 09:00:17 +00:00
apk_warning("%s: Overwriting %s owned by %s.\n",
2009-03-04 06:36:56 +00:00
pkg->name->name, ae->name,
opkg->name->name);
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}
apk_db_file_change_owner(db, file, diri,
&ctx->file_diri_node);
}
if (apk_verbosity > 1)
printf("%s\n", ae->name);
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if ((diri->dir->flags & APK_DBDIRF_PROTECTED) &&
apk_file_get_info(ae->name, file->csum.type, &fi) == 0 &&
apk_checksum_compare(&file->csum, &fi.csum) != 0) {
/* Protected file. Extract to separate place */
if (!(apk_flags & APK_CLEAN_PROTECTED)) {
snprintf(alt_name, sizeof(alt_name),
"%s/%s.apk-new",
diri->dir->name, file->name);
r = apk_archive_entry_extract(ae, is, alt_name,
extract_cb, ctx);
/* remove identical apk-new */
if (ae->csum.type != fi.csum.type)
apk_file_get_info(ae->name, ae->csum.type, &fi);
if (apk_checksum_compare(&ae->csum, &fi.csum) == 0)
unlink(alt_name);
}
} else {
r = apk_archive_entry_extract(ae, is, NULL,
extract_cb, ctx);
}
memcpy(&file->csum, &ae->csum, sizeof(file->csum));
} else {
if (apk_verbosity > 1)
printf("%s\n", ae->name);
if (name.ptr[name.len-1] == '/')
name.len--;
2009-01-06 17:44:54 +00:00
if (ctx->diri_node == NULL)
ctx->diri_node = hlist_tail_ptr(&pkg->owned_dirs);
ctx->diri = diri = apk_db_diri_new(db, pkg, name,
&ctx->diri_node);
ctx->file_diri_node = hlist_tail_ptr(&diri->owned_files);
2009-01-06 17:44:54 +00:00
apk_db_diri_set(diri, ae->mode & 0777, ae->uid, ae->gid);
apk_db_diri_mkdir(diri);
}
ctx->installed_size += ctx->current_file_size;
return r;
}
static void apk_db_purge_pkg(struct apk_database *db,
struct apk_package *pkg)
{
2009-01-06 17:44:54 +00:00
struct apk_db_dir_instance *diri;
struct apk_db_file *file;
struct apk_db_file_hash_key key;
2009-01-06 17:44:54 +00:00
struct hlist_node *dc, *dn, *fc, *fn;
unsigned long hash;
2009-01-06 17:44:54 +00:00
char name[1024];
hlist_for_each_entry_safe(diri, dc, dn, &pkg->owned_dirs, pkg_dirs_list) {
hlist_for_each_entry_safe(file, fc, fn, &diri->owned_files, diri_files_list) {
snprintf(name, sizeof(name), "%s/%s",
diri->dir->name, file->name);
key = (struct apk_db_file_hash_key) {
.dirname = APK_BLOB_PTR_LEN(diri->dir->name, diri->dir->namelen),
.filename = APK_BLOB_PTR_LEN(file->name, file->namelen),
};
hash = apk_blob_hash_seed(key.filename, diri->dir->hash);
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unlink(name);
if (apk_verbosity > 1)
printf("%s\n", name);
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__hlist_del(fc, &diri->owned_files.first);
apk_hash_delete_hashed(&db->installed.files, APK_BLOB_BUF(&key), hash);
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db->installed.stats.files--;
}
apk_db_diri_rmdir(diri);
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__hlist_del(dc, &pkg->owned_dirs.first);
apk_db_diri_free(db, diri);
}
apk_pkg_set_state(db, pkg, APK_PKG_NOT_INSTALLED);
}
static int apk_db_gzip_part(void *pctx, EVP_MD_CTX *mdctx, int part)
{
struct install_ctx *ctx = (struct install_ctx *) pctx;
switch (part) {
case APK_MPART_BEGIN:
EVP_DigestInit_ex(mdctx, EVP_md5(), NULL);
break;
case APK_MPART_END:
ctx->data_csum.type = EVP_MD_CTX_size(mdctx);
EVP_DigestFinal_ex(mdctx, ctx->data_csum.data, NULL);
break;
}
return 0;
}
static int apk_db_unpack_pkg(struct apk_database *db,
struct apk_package *newpkg,
int upgrade, apk_progress_cb cb, void *cb_ctx)
{
struct install_ctx ctx;
struct apk_bstream *bs = NULL;
struct apk_istream *tar;
char pkgname[256], file[256];
int i, need_copy = FALSE;
snprintf(pkgname, sizeof(pkgname), "%s-%s.apk",
newpkg->name->name, newpkg->version);
if (newpkg->filename == NULL) {
struct apk_repository *repo;
for (i = 0; i < APK_MAX_REPOS; i++)
if (newpkg->repos & BIT(i))
break;
if (i >= APK_MAX_REPOS) {
apk_error("%s-%s: not present in any repository",
newpkg->name->name, newpkg->version);
return -1;
}
repo = &db->repos[i];
if (apk_db_cache_active(db) &&
repo->csum.type != APK_CHECKSUM_NONE)
bs = apk_db_cache_open(db, &newpkg->csum, pkgname);
if (bs == NULL) {
snprintf(file, sizeof(file), "%s/%s",
repo->url, pkgname);
bs = apk_bstream_from_url(file);
if (repo->csum.type != APK_CHECKSUM_NONE)
need_copy = TRUE;
}
} else {
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bs = apk_bstream_from_file(newpkg->filename);
need_copy = TRUE;
}
if (!apk_db_cache_active(db))
need_copy = FALSE;
if (need_copy) {
apk_db_cache_get_name(file, sizeof(file), db, &newpkg->csum,
pkgname, TRUE);
bs = apk_bstream_tee(bs, file);
}
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if (bs == NULL) {
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apk_error("%s: %s", file, strerror(errno));
return errno;
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}
ctx = (struct install_ctx) {
.db = db,
.pkg = newpkg,
.script = upgrade ?
APK_SCRIPT_PRE_UPGRADE : APK_SCRIPT_PRE_INSTALL,
.cb = cb,
.cb_ctx = cb_ctx,
};
tar = apk_bstream_gunzip_mpart(bs, apk_db_gzip_part, &ctx);
if (apk_parse_tar(tar, apk_db_install_archive_entry, &ctx) != 0)
goto err_close;
tar->close(tar);
/* Check the package checksum */
if (apk_checksum_compare(&ctx.data_csum, &newpkg->csum) != 0)
apk_warning("%s-%s: checksum does not match",
newpkg->name->name, newpkg->version);
if (need_copy) {
char file2[256];
apk_db_cache_get_name(file2, sizeof(file2), db,
&newpkg->csum, pkgname, FALSE);
rename(file, file2);
}
return 0;
err_close:
bs->close(bs, NULL);
return -1;
}
int apk_db_install_pkg(struct apk_database *db,
struct apk_package *oldpkg,
struct apk_package *newpkg,
apk_progress_cb cb, void *cb_ctx)
{
int r;
if (fchdir(db->root_fd) < 0)
return errno;
/* Just purging? */
if (oldpkg != NULL && newpkg == NULL) {
r = apk_pkg_run_script(oldpkg, db->root_fd,
APK_SCRIPT_PRE_DEINSTALL);
if (r != 0)
return r;
apk_db_purge_pkg(db, oldpkg);
r = apk_pkg_run_script(oldpkg, db->root_fd,
APK_SCRIPT_POST_DEINSTALL);
return r;
}
/* Install the new stuff */
if (!(newpkg->name->flags & APK_NAME_VIRTUAL)) {
r = apk_db_unpack_pkg(db, newpkg, (oldpkg != NULL), cb, cb_ctx);
if (r != 0)
return r;
}
apk_pkg_set_state(db, newpkg, APK_PKG_INSTALLED);
if (oldpkg != NULL)
apk_db_purge_pkg(db, oldpkg);
r = apk_pkg_run_script(newpkg, db->root_fd,
(oldpkg == NULL) ?
APK_SCRIPT_POST_INSTALL : APK_SCRIPT_POST_UPGRADE);
if (r != 0) {
apk_error("%s-%s: Failed to execute post-install/upgrade script",
newpkg->name->name, newpkg->version);
}
return r;
}