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pacman/lib/libalpm/add.c
Dan McGee 591bfabbd3 Clean up libalpm/add.c and revise file extraction code 
This is a full refactoring of _alpm_add_commit into multiple functions and a
better layout for later. Some highlights:

* No regressions in pactest performance.
* Much cleaner layout. add_commit is split into four functions:
  upgrade_remove, extract_single_file, commit_single_pkg, _alpm_add_commit
* No more super-functions, the heaviest (extract_single_file) is finally
  under 400 lines, with much improved commenting as well.
* Incorporation of Andrew Fyfe's ideas for fixing FS #7484. Try to handle
  all possible cases of extraction combinations with files, symlinks, dirs,
  and non-existant entries on the filesystem. This should make our dealings
  with libarchive fall more into our control.

Signed-off-by: Dan McGee <dan@archlinux.org>
2007-07-15 21:36:46 -04:00

984 lines
32 KiB
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/*
* add.c
*
* Copyright (c) 2002-2007 by Judd Vinet <jvinet@zeroflux.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#include <stdlib.h>
#include <errno.h>
#include <time.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
/* libarchive */
#include <archive.h>
#include <archive_entry.h>
/* libalpm */
#include "add.h"
#include "alpm_list.h"
#include "trans.h"
#include "util.h"
#include "error.h"
#include "cache.h"
#include "md5.h"
#include "sha1.h"
#include "log.h"
#include "backup.h"
#include "package.h"
#include "db.h"
#include "provide.h"
#include "conflict.h"
#include "deps.h"
#include "remove.h"
#include "handle.h"
int _alpm_add_loadtarget(pmtrans_t *trans, pmdb_t *db, char *name)
{
pmpkg_t *info = NULL;
pmpkg_t *dummy;
char pkgname[PKG_NAME_LEN], pkgver[PKG_VERSION_LEN];
alpm_list_t *i;
struct stat buf;
ALPM_LOG_FUNC;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
ASSERT(name != NULL && strlen(name) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));
_alpm_log(PM_LOG_DEBUG, "loading target '%s'", name);
/* TODO FS#5120 we need a better way to check if a package is a valid package,
* and read the metadata instead of relying on the filename for package name
* and version */
if(stat(name, &buf)) {
pm_errno = PM_ERR_NOT_A_FILE;
goto error;
}
if(_alpm_pkg_splitname(name, pkgname, pkgver, 1) == -1) {
pm_errno = PM_ERR_PKG_INVALID_NAME;
goto error;
}
/* no additional hyphens in version strings */
if(strchr(pkgver, '-') != strrchr(pkgver, '-')) {
pm_errno = PM_ERR_PKG_INVALID_NAME;
goto error;
}
if(trans->type != PM_TRANS_TYPE_UPGRADE) {
/* only install this package if it is not already installed */
if(_alpm_db_get_pkgfromcache(db, pkgname)) {
pm_errno = PM_ERR_PKG_INSTALLED;
goto error;
}
} else {
if(trans->flags & PM_TRANS_FLAG_FRESHEN) {
/* only upgrade/install this package if it is already installed and at a lesser version */
dummy = _alpm_db_get_pkgfromcache(db, pkgname);
if(dummy == NULL || _alpm_versioncmp(dummy->version, pkgver) >= 0) {
pm_errno = PM_ERR_PKG_CANT_FRESH;
goto error;
}
}
}
/* check if an older version of said package is already in transaction packages.
* if so, replace it in the list */
for(i = trans->packages; i; i = i->next) {
pmpkg_t *pkg = i->data;
if(strcmp(pkg->name, pkgname) == 0) {
if(_alpm_versioncmp(pkg->version, pkgver) < 0) {
pmpkg_t *newpkg;
_alpm_log(PM_LOG_WARNING, _("replacing older version %s-%s by %s in target list"),
pkg->name, pkg->version, pkgver);
if((newpkg = _alpm_pkg_load(name)) == NULL) {
/* pm_errno is already set by pkg_load() */
goto error;
}
_alpm_pkg_free(i->data);
i->data = newpkg;
} else {
_alpm_log(PM_LOG_WARNING, _("newer version %s-%s is in the target list -- skipping"),
pkg->name, pkg->version);
}
return(0);
}
}
_alpm_log(PM_LOG_DEBUG, "reading '%s' metadata", pkgname);
info = _alpm_pkg_load(name);
if(info == NULL) {
/* pm_errno is already set by pkg_load() */
goto error;
}
/* check to verify we're not getting fooled by a corrupted package */
if(strcmp(pkgname, info->name) != 0 || strcmp(pkgver, info->version) != 0) {
pm_errno = PM_ERR_PKG_INVALID;
goto error;
}
if(trans->flags & PM_TRANS_FLAG_ALLDEPS) {
info->reason = PM_PKG_REASON_DEPEND;
}
/* add the package to the transaction */
trans->packages = alpm_list_add(trans->packages, info);
return(0);
error:
_alpm_pkg_free(info);
return(-1);
}
/* This is still messy. We have a lot of compare functions, and we should
* try to consolidate them as much as we can (between add and sync) */
/*static int deppkg_cmp(const void *p1, const void *p2)
{
return(strcmp(((pmdepmissing_t *)p1)->target,
((pmdepmissing_t *)p2)->target));
}*/
int _alpm_add_prepare(pmtrans_t *trans, pmdb_t *db, alpm_list_t **data)
{
alpm_list_t *lp = NULL, *i = NULL;
ALPM_LOG_FUNC;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
/* Check dependencies
*/
if(!(trans->flags & PM_TRANS_FLAG_NODEPS)) {
EVENT(trans, PM_TRANS_EVT_CHECKDEPS_START, NULL, NULL);
/* look for unsatisfied dependencies */
_alpm_log(PM_LOG_DEBUG, "looking for unsatisfied dependencies");
lp = _alpm_checkdeps(db, trans->type, trans->packages);
if(lp != NULL) {
if(data) {
*data = lp;
} else {
FREELIST(lp);
}
RET_ERR(PM_ERR_UNSATISFIED_DEPS, -1);
}
/* no unsatisfied deps, so look for conflicts */
_alpm_log(PM_LOG_DEBUG, "looking for conflicts");
lp = _alpm_checkconflicts(db, trans->packages);
for(i = lp; i; i = i->next) {
pmdepmissing_t *miss = i->data;
_alpm_log(PM_LOG_ERROR, _("replacing packages with -A and -U is not supported yet"));
_alpm_log(PM_LOG_ERROR, _("please remove '%s' first, using -Rd"), miss->depend.name);
RET_ERR(PM_ERR_CONFLICTING_DEPS, -1);
/* Attempt to resolve conflicts */
/*
int skip_this = 0;
QUESTION(trans, PM_TRANS_CONV_CONFLICT_PKG, miss->target, miss->depend.name, NULL, &skip_this);
if(skip_this) {
pmdepmissing_t *pkg = NULL;
lp = alpm_list_remove(lp, (void *)miss, deppkg_cmp, (void*)&pkg);
*/
/* TODO: We remove the conflict from the list but never actually remove
* the package. Need to do this to fix FS #3492. The sync code should
* provide an example of how to do this, as it handles replaces and
* removes. We run into problems because we do a file conflict check
* below and it fails there. A force flag will skip that part, but
* still not remove the original package designated here for removal.
* Better yet, dump all this shitty duplicate code and somehow combine
* it with the sync code. */
/*
FREE(pkg);
if(lp == NULL) {
break;
}
}
*/
}
/* Removal code should go here, as described above. Instead of simply
* removing items, perhaps throw them in another list to be removed, then
* proceed as sync.c would? I'm not sure because I'm not familiar enough
* with the codebase. */
if(lp != NULL) {
if(data) {
*data = lp;
} else {
FREELIST(lp);
}
RET_ERR(PM_ERR_CONFLICTING_DEPS, -1);
}
/* re-order w.r.t. dependencies */
_alpm_log(PM_LOG_DEBUG, "sorting by dependencies");
lp = _alpm_sortbydeps(trans->packages, PM_TRANS_TYPE_ADD);
/* free the old alltargs */
alpm_list_free(trans->packages);
trans->packages = lp;
EVENT(trans, PM_TRANS_EVT_CHECKDEPS_DONE, NULL, NULL);
}
/* Check for file conflicts */
if(!(trans->flags & PM_TRANS_FLAG_FORCE)) {
EVENT(trans, PM_TRANS_EVT_FILECONFLICTS_START, NULL, NULL);
_alpm_log(PM_LOG_DEBUG, "looking for file conflicts");
lp = _alpm_db_find_conflicts(db, trans, handle->root);
if(lp != NULL) {
if(data) {
*data = lp;
} else {
FREELIST(lp);
}
RET_ERR(PM_ERR_FILE_CONFLICTS, -1);
}
EVENT(trans, PM_TRANS_EVT_FILECONFLICTS_DONE, NULL, NULL);
}
return(0);
}
static int upgrade_remove(pmpkg_t *oldpkg, pmpkg_t *newpkg, pmtrans_t *trans, pmdb_t *db) {
/* this is kinda odd. If the old package exists, at this point we make a
* NEW transaction, unrelated to handle->trans, and instantiate a "remove"
* with the type PM_TRANS_TYPE_REMOVEUPGRADE. TODO: kill this weird
* behavior. */
pmtrans_t *tr = _alpm_trans_new();
_alpm_log(PM_LOG_DEBUG, "removing old package first (%s-%s)",
oldpkg->name, oldpkg->version);
if(!tr) {
RET_ERR(PM_ERR_TRANS_ABORT, -1);
}
if(_alpm_trans_init(tr, PM_TRANS_TYPE_REMOVEUPGRADE, trans->flags,
NULL, NULL, NULL) == -1) {
_alpm_trans_free(tr);
tr = NULL;
RET_ERR(PM_ERR_TRANS_ABORT, -1);
}
if(_alpm_remove_loadtarget(tr, db, newpkg->name) == -1) {
_alpm_trans_free(tr);
tr = NULL;
RET_ERR(PM_ERR_TRANS_ABORT, -1);
}
/* copy the remove skiplist over */
tr->skip_remove = alpm_list_strdup(trans->skip_remove);
const alpm_list_t *b;
/* Add files in the NEW package's backup array to the noupgrade array
* so this removal operation doesn't kill them */
/* TODO if we add here, all backup=() entries for all targets, new and
* old, we cover all bases, including backup=() locations changing hands.
* But is this viable? */
alpm_list_t *old_noupgrade = alpm_list_strdup(handle->noupgrade);
for(b = alpm_pkg_get_backup(newpkg); b; b = b->next) {
const char *backup = b->data;
_alpm_log(PM_LOG_DEBUG, "adding %s to the NoUpgrade array temporarily",
backup);
handle->noupgrade = alpm_list_add(handle->noupgrade, strdup(backup));
}
int ret = _alpm_remove_commit(tr, db);
_alpm_trans_free(tr);
tr = NULL;
/* restore our "NoUpgrade" list to previous state */
alpm_list_free_inner(handle->noupgrade, free);
alpm_list_free(handle->noupgrade);
handle->noupgrade = old_noupgrade;
if(ret == -1) {
RET_ERR(PM_ERR_TRANS_ABORT, -1);
}
return(0);
}
static int extract_single_file(struct archive *archive,
struct archive_entry *entry, pmpkg_t *newpkg, pmpkg_t *oldpkg,
pmtrans_t *trans, pmdb_t *db)
{
const char *entryname; /* the name of the file in the archive */
mode_t entrymode;
char filename[PATH_MAX]; /* the actual file we're extracting */
int needbackup = 0, notouch = 0;
char *hash_orig = NULL;
int use_md5 = 0;
const int archive_flags = ARCHIVE_EXTRACT_OWNER |
ARCHIVE_EXTRACT_PERM |
ARCHIVE_EXTRACT_TIME;
int errors = 0;
entryname = archive_entry_pathname(entry);
entrymode = archive_entry_mode(entry);
memset(filename, 0, PATH_MAX); /* just to be sure */
if(strcmp(entryname, ".INSTALL") == 0) {
/* the install script goes inside the db */
snprintf(filename, PATH_MAX, "%s/%s-%s/install", db->path,
newpkg->name, newpkg->version);
} else if(strcmp(entryname, ".CHANGELOG") == 0) {
/* the changelog goes inside the db */
snprintf(filename, PATH_MAX, "%s/%s-%s/changelog", db->path,
newpkg->name, newpkg->version);
} else if(*entryname == '.') {
/* for now, ignore all files starting with '.' that haven't
* already been handled (for future possibilities) */
_alpm_log(PM_LOG_DEBUG, "skipping extraction of '%s'", entryname);
archive_read_data_skip(archive);
return(0);
} else {
/* build the new entryname relative to handle->root */
snprintf(filename, PATH_MAX, "%s%s", handle->root, entryname);
}
/* if a file is in NoExtract then we never extract it */
if(alpm_list_find_str(handle->noextract, entryname)) {
_alpm_log(PM_LOG_DEBUG, "%s is in NoExtract, skipping extraction",
entryname);
alpm_logaction("note: %s is in NoExtract, skipping extraction",
entryname);
archive_read_data_skip(archive);
return(0);
}
/* if a file is in the add skiplist we never extract it */
if(alpm_list_find_str(trans->skip_add, filename)) {
_alpm_log(PM_LOG_DEBUG, "%s is in trans->skip_add, skipping extraction", entryname);
archive_read_data_skip(archive);
return(0);
}
/* Check for file existence. This is one of the more crucial parts
* to get 'right'. Here are the possibilities, with the filesystem
* on the left and the package on the top:
* (F=file, N=node, S=symlink, D=dir)
* | F/N | S | D
* non-existent | 1 | 2 | 3
* F/N | 4 | 5 | 6
* S | 7 | 8 | 9
* D | 10 | 11 | 12
*
* 1,2,3- just extract, no magic necessary. lstat will fail here.
* 4,5,6,7,8- conflict checks should have caught this. either overwrite
* or backup the file.
* 9- follow the symlink, hopefully it is a directory, check it.
* 10- file replacing directory- don't allow it.
* 11- don't extract symlink- a dir exists here. we don't want links to
* links, etc.
* 12- skip extraction, dir already exists.
*/
struct stat lsbuf;
if(lstat(filename, &lsbuf) != 0) {
/* cases 1,2,3: couldn't stat an existing file, skip all backup checks */
} else {
/* do a stat as well, so we can see what symlinks point to */
struct stat sbuf;
stat(filename, &sbuf);
if(S_ISDIR(lsbuf.st_mode) && S_ISDIR(entrymode)) {
/* case 12: existing dir, ignore it */
if(lsbuf.st_mode != entrymode) {
/* if filesystem perms are different than pkg perms, warn user */
int mask = 07777;
_alpm_log(PM_LOG_WARNING, _("directory permissions differ on %s\n"
"filesystem: %o package: %o"), entryname, lsbuf.st_mode & mask,
entrymode & mask);
alpm_logaction("warning: directory permissions differ on %s\n"
"filesystem: %o package: %o", entryname, lsbuf.st_mode & mask,
entrymode & mask);
}
_alpm_log(PM_LOG_DEBUG, "extract: skipping dir extraction of %s",
entryname);
archive_read_data_skip(archive);
return(0);
} else if(S_ISDIR(lsbuf.st_mode) && S_ISLNK(entrymode)) {
/* case 11: existing dir, symlink in package, ignore it */
_alpm_log(PM_LOG_DEBUG, "extract: skipping symlink extraction of %s",
entryname);
archive_read_data_skip(archive);
return(0);
} else if(S_ISLNK(lsbuf.st_mode) && S_ISDIR(entrymode)) {
/* case 9: existing symlink, dir in package */
if(S_ISDIR(sbuf.st_mode)) {
/* the symlink on FS is to a directory, so we'll use it */
_alpm_log(PM_LOG_DEBUG, "extract: skipping symlink overwrite of %s",
entryname);
archive_read_data_skip(archive);
return(0);
} else {
/* this is BAD. symlink was not to a directory */
_alpm_log(PM_LOG_ERROR, _("extract: symlink %s does not point to dir"),
entryname);
archive_read_data_skip(archive);
return(1);
}
} else if(S_ISDIR(lsbuf.st_mode) && S_ISREG(entrymode)) {
/* case 10: trying to overwrite dir tree with file, don't allow it */
_alpm_log(PM_LOG_ERROR, _("extract: not overwriting dir with file %s"),
entryname);
archive_read_data_skip(archive);
return(1);
} else if(S_ISREG(lsbuf.st_mode) && S_ISDIR(entrymode)) {
/* case 6: trying to overwrite file with dir */
_alpm_log(PM_LOG_DEBUG, "extract: overwriting file with dir %s",
entryname);
} else if(S_ISREG(entrymode)) {
/* case 4,7: */
/* if file is in NoUpgrade, don't touch it */
if(alpm_list_find_str(handle->noupgrade, entryname)) {
notouch = 1;
} else {
/* go to the backup array and see if our conflict is there */
/* check newpkg first, so that adding backup files is retroactive */
needbackup = alpm_list_find_str(alpm_pkg_get_backup(newpkg), entryname);
/* check oldpkg for a backup entry, store the hash if available */
if(oldpkg) {
hash_orig = _alpm_needbackup(entryname, alpm_pkg_get_backup(oldpkg));
if(hash_orig) {
needbackup = 1;
}
}
/* if we force hash_orig to be non-NULL retroactive backup works */
if(needbackup && !hash_orig) {
hash_orig = strdup("");
}
}
}
/* else if(S_ISLNK(entrymode)) { */
/* case 5,8: don't need to do anything special */
}
if(strlen(newpkg->sha1sum) == 0) {
use_md5 = 1;
}
if(needbackup) {
char *tempfile = NULL;
char *hash_local = NULL, *hash_pkg = NULL;
int fd;
/* extract the package's version to a temporary file and checksum it */
tempfile = strdup("/tmp/alpm_XXXXXX");
fd = mkstemp(tempfile);
archive_entry_set_pathname(entry, tempfile);
int ret = archive_read_extract(archive, entry, archive_flags);
if(ret == ARCHIVE_WARN) {
/* operation succeeded but a non-critical error was encountered */
_alpm_log(PM_LOG_DEBUG, "warning extracting %s (%s)",
entryname, archive_error_string(archive));
} else if(ret != ARCHIVE_OK) {
_alpm_log(PM_LOG_ERROR, _("could not extract %s (%s)"),
entryname, archive_error_string(archive));
alpm_logaction("error: could not extract %s (%s)",
entryname, archive_error_string(archive));
unlink(tempfile);
FREE(hash_orig);
close(fd);
return(1);
}
if(use_md5) {
hash_local = _alpm_MDFile(filename);
hash_pkg = _alpm_MDFile(tempfile);
} else {
hash_local = _alpm_SHAFile(filename);
hash_pkg = _alpm_SHAFile(tempfile);
}
/* append the new md5 or sha1 hash to it's respective entry
* in newpkg's backup (it will be the new orginal) */
alpm_list_t *backups;
for(backups = alpm_pkg_get_backup(newpkg); backups;
backups = alpm_list_next(backups)) {
char *oldbackup = alpm_list_getdata(backups);
if(!oldbackup || strcmp(oldbackup, entryname) != 0) {
return(0);
}
char *backup = NULL;
int backup_len = strlen(oldbackup) + 2; /* tab char and null byte */
if(use_md5) {
backup_len += 32; /* MD5s are 32 chars in length */
} else {
backup_len += 40; /* SHA1s are 40 chars in length */
}
backup = malloc(backup_len);
if(!backup) {
RET_ERR(PM_ERR_MEMORY, -1);
}
sprintf(backup, "%s\t%s", oldbackup, hash_pkg);
backup[backup_len-1] = '\0';
FREE(oldbackup);
backups->data = backup;
}
_alpm_log(PM_LOG_DEBUG, "checking hashes for %s", entryname);
_alpm_log(PM_LOG_DEBUG, "current: %s", hash_local);
_alpm_log(PM_LOG_DEBUG, "new: %s", hash_pkg);
_alpm_log(PM_LOG_DEBUG, "original: %s", hash_orig);
if(!oldpkg) {
/* looks like we have a local file that has a different hash as the
* file in the package, move it to a .pacorig */
if(strcmp(hash_local, hash_pkg) != 0) {
char newpath[PATH_MAX];
snprintf(newpath, PATH_MAX, "%s.pacorig", filename);
/* move the existing file to the "pacorig" */
if(rename(filename, newpath)) {
archive_entry_set_pathname(entry, filename);
_alpm_log(PM_LOG_ERROR, _("could not rename %s (%s)"), filename, strerror(errno));
alpm_logaction("error: could not rename %s (%s)", filename, strerror(errno));
errors++;
} else {
/* copy the tempfile we extracted to the real path */
if(_alpm_copyfile(tempfile, filename)) {
archive_entry_set_pathname(entry, filename);
_alpm_log(PM_LOG_ERROR, _("could not copy tempfile to %s (%s)"), filename, strerror(errno));
alpm_logaction("error: could not copy tempfile to %s (%s)", filename, strerror(errno));
errors++;
} else {
archive_entry_set_pathname(entry, filename);
_alpm_log(PM_LOG_WARNING, _("%s saved as %s"), filename, newpath);
alpm_logaction("warning: %s saved as %s", filename, newpath);
}
}
}
} else if(hash_orig) {
/* the fun part */
if(strcmp(hash_orig, hash_local) == 0) {
/* installed file has NOT been changed by user */
if(strcmp(hash_orig, hash_pkg) != 0) {
_alpm_log(PM_LOG_DEBUG, "action: installing new file: %s",
entryname);
if(_alpm_copyfile(tempfile, filename)) {
_alpm_log(PM_LOG_ERROR, _("could not copy tempfile to %s (%s)"), filename, strerror(errno));
errors++;
}
archive_entry_set_pathname(entry, filename);
} else {
/* there's no sense in installing the same file twice, install
* ONLY is the original and package hashes differ */
_alpm_log(PM_LOG_DEBUG, "action: leaving existing file in place");
}
} else if(strcmp(hash_orig, hash_pkg) == 0) {
/* originally installed file and new file are the same - this
* implies the case above failed - i.e. the file was changed by a
* user */
_alpm_log(PM_LOG_DEBUG, "action: leaving existing file in place");
} else if(strcmp(hash_local, hash_pkg) == 0) {
/* this would be magical. The above two cases failed, but the
* user changes just so happened to make the new file exactly the
* same as the one in the package... skip it */
_alpm_log(PM_LOG_DEBUG, "action: leaving existing file in place");
} else {
char newpath[PATH_MAX];
_alpm_log(PM_LOG_DEBUG, "action: keeping current file and installing new one with .pacnew ending");
snprintf(newpath, PATH_MAX, "%s.pacnew", filename);
if(_alpm_copyfile(tempfile, newpath)) {
_alpm_log(PM_LOG_ERROR, _("could not install %s as %s: %s"), filename, newpath, strerror(errno));
alpm_logaction("error: could not install %s as %s: %s", filename, newpath, strerror(errno));
} else {
_alpm_log(PM_LOG_WARNING, _("%s installed as %s"), filename, newpath);
alpm_logaction("warning: %s installed as %s", filename, newpath);
}
}
}
FREE(hash_local);
FREE(hash_pkg);
FREE(hash_orig);
unlink(tempfile);
FREE(tempfile);
close(fd);
} else {
/* we didn't need a backup */
if(notouch) {
/* change the path to a .pacnew extension */
_alpm_log(PM_LOG_DEBUG, "%s is in NoUpgrade -- skipping", filename);
_alpm_log(PM_LOG_WARNING, _("extracting %s as %s.pacnew"), filename, filename);
alpm_logaction("warning: extracting %s as %s.pacnew", filename, filename);
strncat(filename, ".pacnew", PATH_MAX - strlen(filename));
} else {
_alpm_log(PM_LOG_DEBUG, "extracting %s", filename);
}
if(trans->flags & PM_TRANS_FLAG_FORCE) {
/* if FORCE was used, unlink() each file (whether it's there
* or not) before extracting. This prevents the old "Text file busy"
* error that crops up if forcing a glibc or pacman upgrade. */
unlink(filename);
}
archive_entry_set_pathname(entry, filename);
int ret = archive_read_extract(archive, entry, archive_flags);
if(ret == ARCHIVE_WARN) {
/* operation succeeded but a non-critical error was encountered */
_alpm_log(PM_LOG_DEBUG, "warning extracting %s (%s)",
entryname, archive_error_string(archive));
} else if(ret != ARCHIVE_OK) {
_alpm_log(PM_LOG_ERROR, _("could not extract %s (%s)"),
entryname, archive_error_string(archive));
alpm_logaction("error: could not extract %s (%s)",
entryname, archive_error_string(archive));
return(1);
}
/* calculate an hash if this is in newpkg's backup */
alpm_list_t *b;
for(b = alpm_pkg_get_backup(newpkg); b; b = b->next) {
char *backup = NULL, *hash = NULL;
char *oldbackup = alpm_list_getdata(b);
int backup_len = strlen(oldbackup) + 2; /* tab char and null byte */
if(!oldbackup || strcmp(oldbackup, entryname) != 0) {
return(0);
}
_alpm_log(PM_LOG_DEBUG, "appending backup entry for %s", filename);
if(use_md5) {
backup_len += 32; /* MD5s are 32 chars in length */
hash = _alpm_MDFile(filename);
} else {
backup_len += 40; /* SHA1s are 40 chars in length */
hash = _alpm_SHAFile(filename);
}
backup = malloc(backup_len);
if(!backup) {
RET_ERR(PM_ERR_MEMORY, -1);
}
sprintf(backup, "%s\t%s", oldbackup, hash);
backup[backup_len-1] = '\0';
FREE(hash);
FREE(oldbackup);
b->data = backup;
}
}
return(errors);
}
static int commit_single_pkg(pmpkg_t *newpkg, int pkg_current, int pkg_count,
pmtrans_t *trans, pmdb_t *db)
{
int i, ret = 0, errors = 0;
struct archive *archive;
struct archive_entry *entry;
char cwd[PATH_MAX] = "";
char scriptlet[PATH_MAX+1];
int is_upgrade = 0;
double percent = 0.0;
pmpkg_t *oldpkg = NULL;
snprintf(scriptlet, PATH_MAX, "%s%s-%s/install", db->path,
alpm_pkg_get_name(newpkg), alpm_pkg_get_version(newpkg));
/* see if this is an upgrade. if so, remove the old package first */
pmpkg_t *local = _alpm_db_get_pkgfromcache(db, newpkg->name);
if(local) {
is_upgrade = 1;
EVENT(trans, PM_TRANS_EVT_UPGRADE_START, newpkg, NULL);
_alpm_log(PM_LOG_DEBUG, "upgrading package %s-%s",
newpkg->name, newpkg->version);
/* we'll need to save some record for backup checks later */
oldpkg = _alpm_pkg_dup(local);
/* copy over the install reason (unless alldeps is set) */
if(trans->flags & PM_TRANS_FLAG_ALLDEPS) {
newpkg->reason = PM_PKG_REASON_DEPEND;
} else {
newpkg->reason = alpm_pkg_get_reason(local);
}
/* pre_upgrade scriptlet */
if(alpm_pkg_has_scriptlet(newpkg) && !(trans->flags & PM_TRANS_FLAG_NOSCRIPTLET)) {
_alpm_runscriptlet(handle->root, newpkg->data, "pre_upgrade", newpkg->version, oldpkg->version, trans);
}
} else {
is_upgrade = 0;
EVENT(trans, PM_TRANS_EVT_ADD_START, newpkg, NULL);
_alpm_log(PM_LOG_DEBUG, "adding package %s-%s",
newpkg->name, newpkg->version);
/* pre_install scriptlet */
if(alpm_pkg_has_scriptlet(newpkg) && !(trans->flags & PM_TRANS_FLAG_NOSCRIPTLET)) {
_alpm_runscriptlet(handle->root, newpkg->data, "pre_install", newpkg->version, NULL, trans);
}
}
if(oldpkg) {
/* set up fake remove transaction */
int ret = upgrade_remove(oldpkg, newpkg, trans, db);
if(ret != 0) {
return(ret);
}
}
if(!(trans->flags & PM_TRANS_FLAG_DBONLY)) {
_alpm_log(PM_LOG_DEBUG, "extracting files");
if ((archive = archive_read_new()) == NULL) {
RET_ERR(PM_ERR_LIBARCHIVE_ERROR, -1);
}
archive_read_support_compression_all(archive);
archive_read_support_format_all(archive);
if(archive_read_open_file(archive, newpkg->data, ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) {
RET_ERR(PM_ERR_PKG_OPEN, -1);
}
/* save the cwd so we can restore it later */
if(getcwd(cwd, PATH_MAX) == NULL) {
_alpm_log(PM_LOG_ERROR, _("could not get current working directory"));
cwd[0] = 0;
}
/* libarchive requires this for extracting hard links */
chdir(handle->root);
/* call PROGRESS once with 0 percent, as we sort-of skip that here */
if(is_upgrade) {
PROGRESS(trans, PM_TRANS_PROGRESS_UPGRADE_START,
alpm_pkg_get_name(newpkg), 0, pkg_count, pkg_current);
} else {
PROGRESS(trans, PM_TRANS_PROGRESS_ADD_START,
alpm_pkg_get_name(newpkg), 0, pkg_count, pkg_current);
}
for(i = 0; archive_read_next_header(archive, &entry) == ARCHIVE_OK; i++) {
if(newpkg->size != 0) {
/* Using compressed size for calculations here, as newpkg->isize is not
* exact when it comes to comparing to the ACTUAL uncompressed size
* (missing metadata sizes) */
unsigned long pos = archive_position_compressed(archive);
percent = (double)pos / (double)newpkg->size;
_alpm_log(PM_LOG_DEBUG, "decompression progress: %f%% (%ld / %ld)",
percent*100.0, pos, newpkg->size);
if(percent >= 1.0) {
percent = 1.0;
}
}
if(is_upgrade) {
PROGRESS(trans, PM_TRANS_PROGRESS_UPGRADE_START,
alpm_pkg_get_name(newpkg), (int)(percent * 100), pkg_count,
pkg_current);
} else {
PROGRESS(trans, PM_TRANS_PROGRESS_ADD_START,
alpm_pkg_get_name(newpkg), (int)(percent * 100), pkg_count,
pkg_current);
}
/* extract the next file from the archive */
errors += extract_single_file(archive, entry, newpkg, oldpkg,
trans, db);
}
archive_read_finish(archive);
/* restore the old cwd is we have it */
if(strlen(cwd)) {
chdir(cwd);
}
if(errors) {
ret = 1;
if(is_upgrade) {
_alpm_log(PM_LOG_ERROR, _("problem occurred while upgrading %s"),
newpkg->name);
alpm_logaction("error: problem occurred while upgrading %s",
newpkg->name);
} else {
_alpm_log(PM_LOG_ERROR, _("problem occurred while installing %s"),
newpkg->name);
alpm_logaction("error: problem occurred while installing %s",
newpkg->name);
}
}
}
/* Update the requiredby field by scanning the whole database
* looking for packages depending on the package to add */
_alpm_pkg_update_requiredby(newpkg);
/* special case: if our provides list has changed from oldpkg to newpkg AND
* we get here, we need to make sure we find the actual provision that
* still satisfies this case, and update its 'requiredby' field... ugh */
/* TODO this seems really messy and should be taken care of elsewhere */
alpm_list_t *provdiff, *prov;
provdiff = alpm_list_diff(alpm_pkg_get_provides(oldpkg),
alpm_pkg_get_provides(newpkg),
_alpm_str_cmp);
for(prov = provdiff; prov; prov = prov->next) {
const char *provname = prov->data;
_alpm_log(PM_LOG_DEBUG, "provision '%s' has been removed from package %s (%s => %s)",
provname, alpm_pkg_get_name(oldpkg),
alpm_pkg_get_version(oldpkg), alpm_pkg_get_version(newpkg));
alpm_list_t *p = _alpm_db_whatprovides(handle->db_local, provname);
if(p) {
/* we now have all the provisions in the local DB for this virtual
* package... seeing as we can't really determine which is the 'correct'
* provision, we'll use the FIRST for now.
* TODO figure out a way to find a "correct" provision */
pmpkg_t *provpkg = p->data;
const char *pkgname = alpm_pkg_get_name(provpkg);
_alpm_log(PM_LOG_DEBUG, "updating '%s' due to provision change (%s)",
pkgname, provname);
_alpm_pkg_update_requiredby(provpkg);
if(_alpm_db_write(db, provpkg, INFRQ_DEPENDS)) {
_alpm_log(PM_LOG_ERROR, _("could not update provision '%s' from '%s'"),
provname, pkgname);
alpm_logaction("error: could not update provision '%s' from '%s'",
provname, pkgname);
RET_ERR(PM_ERR_DB_WRITE, -1);
}
}
}
alpm_list_free(provdiff);
/* make an install date (in UTC) */
time_t t = time(NULL);
strncpy(newpkg->installdate, asctime(gmtime(&t)), PKG_DATE_LEN);
/* remove the extra line feed appended by asctime() */
newpkg->installdate[strlen(newpkg->installdate)-1] = 0;
_alpm_log(PM_LOG_DEBUG, "updating database");
_alpm_log(PM_LOG_DEBUG, "adding database entry '%s'", newpkg->name);
if(_alpm_db_write(db, newpkg, INFRQ_ALL)) {
_alpm_log(PM_LOG_ERROR, _("could not update database entry %s-%s"),
alpm_pkg_get_name(newpkg), alpm_pkg_get_version(newpkg));
alpm_logaction("error: could not update database entry %s-%s",
alpm_pkg_get_name(newpkg), alpm_pkg_get_version(newpkg));
RET_ERR(PM_ERR_DB_WRITE, -1);
}
if(_alpm_db_add_pkgincache(db, newpkg) == -1) {
_alpm_log(PM_LOG_ERROR, _("could not add entry '%s' in cache"),
alpm_pkg_get_name(newpkg));
}
/* update dependency packages' REQUIREDBY fields */
_alpm_trans_update_depends(trans, newpkg);
if(is_upgrade) {
PROGRESS(trans, PM_TRANS_PROGRESS_UPGRADE_START,
alpm_pkg_get_name(newpkg), 100, pkg_count, pkg_current);
} else {
PROGRESS(trans, PM_TRANS_PROGRESS_ADD_START,
alpm_pkg_get_name(newpkg), 100, pkg_count, pkg_current);
}
EVENT(trans, PM_TRANS_EVT_EXTRACT_DONE, NULL, NULL);
/* run the post-install script if it exists */
if(alpm_pkg_has_scriptlet(newpkg)
&& !(trans->flags & PM_TRANS_FLAG_NOSCRIPTLET)) {
if(is_upgrade) {
_alpm_runscriptlet(handle->root, scriptlet, "post_upgrade",
alpm_pkg_get_version(newpkg),
oldpkg ? alpm_pkg_get_version(oldpkg) : NULL, trans);
} else {
_alpm_runscriptlet(handle->root, scriptlet, "post_install",
alpm_pkg_get_version(newpkg), NULL, trans);
}
}
if(is_upgrade) {
EVENT(trans, PM_TRANS_EVT_UPGRADE_DONE, newpkg, oldpkg);
} else {
EVENT(trans, PM_TRANS_EVT_ADD_DONE, newpkg, oldpkg);
}
_alpm_pkg_free(oldpkg);
return(0);
}
int _alpm_add_commit(pmtrans_t *trans, pmdb_t *db)
{
int pkg_count, pkg_current;
alpm_list_t *targ;
ALPM_LOG_FUNC;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
if(trans->packages == NULL) {
return(0);
}
pkg_count = alpm_list_count(trans->targets);
pkg_current = 1;
/* loop through our package list adding/upgrading one at a time */
for(targ = trans->packages; targ; targ = targ->next) {
if(handle->trans->state == STATE_INTERRUPTED) {
break;
}
pmpkg_t *newpkg = (pmpkg_t *)targ->data;
commit_single_pkg(newpkg, pkg_current, pkg_count, trans, db);
pkg_current++;
}
/* run ldconfig if it exists */
if(handle->trans->state != STATE_INTERRUPTED) {
_alpm_log(PM_LOG_DEBUG, "running \"ldconfig -r %s\"", handle->root);
_alpm_ldconfig(handle->root);
}
return(0);
}
/* vim: set ts=2 sw=2 noet: */
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