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pacman/lib/libalpm/alpm.c

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/*
* alpm.c
*
* Copyright (c) 2002 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 <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include <syslog.h>
#include <limits.h> /* PATH_MAX */
#include <stdarg.h>
/* pacman */
#include "log.h"
#include "error.h"
#include "versioncmp.h"
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#include "md5.h"
#include "list.h"
#include "package.h"
#include "group.h"
#include "util.h"
#include "db.h"
#include "cache.h"
#include "deps.h"
#include "backup.h"
#include "add.h"
#include "remove.h"
#include "sync.h"
#include "handle.h"
#include "alpm.h"
#define PM_LOCK "/tmp/pacman.lck"
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/* Globals */
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pmhandle_t *handle = NULL;
enum __pmerrno_t pm_errno;
/** @defgroup alpm_interface Interface Functions
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* @{
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*/
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/** Initializes the library. This must be called before any other
* functions are called.
* @param root the full path of the root we'll be installing to (usually /)
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
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int alpm_initialize(char *root)
{
char str[PATH_MAX];
ASSERT(handle == NULL, RET_ERR(PM_ERR_HANDLE_NOT_NULL, -1));
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handle = handle_new();
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if(handle == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
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}
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/* lock db */
if(handle->access == PM_ACCESS_RW) {
handle->lckfd = _alpm_lckmk(PM_LOCK);
if(handle->lckfd == -1) {
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FREE(handle);
RET_ERR(PM_ERR_HANDLE_LOCK, -1);
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}
}
STRNCPY(str, (root) ? root : PM_ROOT, PATH_MAX);
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/* add a trailing '/' if there isn't one */
if(str[strlen(str)-1] != '/') {
strcat(str, "/");
}
handle->root = strdup(str);
return(0);
}
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/** Release the library. This should be the last alpm call you make.
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
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int alpm_release()
{
PMList *i;
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
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/* unlock db */
if(handle->access == PM_ACCESS_RW) {
if(handle->lckfd != -1) {
close(handle->lckfd);
handle->lckfd = -1;
}
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if(_alpm_lckrm(PM_LOCK)) {
_alpm_log(PM_LOG_WARNING, "could not remove lock file %s", PM_LOCK);
alpm_logaction("warning: could not remove lock file %s", PM_LOCK);
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}
}
/* close local database */
if(handle->db_local) {
db_close(handle->db_local);
handle->db_local = NULL;
}
/* and also sync ones */
for(i = handle->dbs_sync; i; i = i->next) {
db_close(i->data);
i->data = NULL;
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}
FREEHANDLE(handle);
return(0);
}
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/** @} */
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/** @defgroup alpm_options Library Options
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* @{
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*/
int alpm_set_option(unsigned char parm, unsigned long data)
{
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
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return(handle_set_option(handle, parm, data));
}
int alpm_get_option(unsigned char parm, long *data)
{
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
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return(handle_get_option(handle, parm, data));
}
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/** @} */
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/** @defgroup alpm_databases Database Functions
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* @{
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*/
pmdb_t *alpm_db_register(char *treename)
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{
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pmdb_t *db;
int found = 0;
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/* Sanity checks */
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ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, NULL));
ASSERT(treename != NULL && strlen(treename) != 0, RET_ERR(PM_ERR_WRONG_ARGS, NULL));
/* Do not register a database if a transaction is on-going */
ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, NULL));
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if(strcmp(treename, "local") == 0) {
if(handle->db_local != NULL) {
found = 1;
}
} else {
PMList *i;
for(i = handle->dbs_sync; i && !found; i = i->next) {
pmdb_t *sdb = i->data;
if(strcmp(treename, sdb->treename) == 0) {
found = 1;
}
}
}
if(found) {
RET_ERR(PM_ERR_DB_NOT_NULL, NULL);
}
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db = db_open(handle->root, handle->dbpath, treename);
if(db == NULL) {
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/* couldn't open the db directory - try creating it */
if(db_create(handle->root, handle->dbpath, treename) == -1) {
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RET_ERR(PM_ERR_DB_CREATE, NULL);
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}
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db = db_open(handle->root, handle->dbpath, treename);
if(db == NULL) {
/* couldn't open the db directory */
RET_ERR(PM_ERR_DB_OPEN, NULL);
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}
}
if(strcmp(treename, "local") == 0) {
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handle->db_local = db;
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} else {
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handle->dbs_sync = pm_list_add(handle->dbs_sync, db);
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}
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return(db);
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}
/* Helper function for comparing databases
*/
static int db_cmp(const void *db1, const void *db2)
{
return(strcmp(((pmdb_t *)db1)->treename, ((pmdb_t *)db2)->treename));
}
int alpm_db_unregister(pmdb_t *db)
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{
int found = 0;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(db != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* Do not unregister a database if a transaction is on-going */
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ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1));
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if(db == handle->db_local) {
db_close(handle->db_local);
handle->db_local = NULL;
found = 1;
} else {
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pmdb_t *data;
handle->dbs_sync = _alpm_list_remove(handle->dbs_sync, db, db_cmp, (void **)&data);
if(data) {
db_close(data);
found = 1;
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}
}
if(!found) {
RET_ERR(PM_ERR_DB_NOT_FOUND, -1);
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}
return(0);
}
void *alpm_db_getinfo(PM_DB *db, unsigned char parm)
{
void *data = NULL;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
switch(parm) {
case PM_DB_TREENAME: data = db->treename; break;
case PM_DB_LASTUPDATE: data = db->lastupdate; break;
default:
data = NULL;
}
return(data);
}
int alpm_db_update(PM_DB *db, char *archive, char *ts)
{
PMList *lp;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(db != NULL && db != handle->db_local, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* Do not update a database if a transaction is on-going */
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ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1));
if(!pm_list_is_in(db, handle->dbs_sync)) {
RET_ERR(PM_ERR_DB_NOT_FOUND, -1);
}
if(ts && strlen(ts) != 0) {
char lastupdate[15];
if(db_getlastupdate(db, lastupdate) != -1) {
if(strcmp(ts, lastupdate) == 0) {
RET_ERR(PM_ERR_DB_UPTODATE, -1);
}
}
}
/* remove the old dir */
_alpm_log(PM_LOG_FLOW2, "flushing database %s/%s", handle->dbpath, db->treename);
for(lp = db_get_pkgcache(db); lp; lp = lp->next) {
if(db_remove(db, lp->data) == -1) {
if(lp->data) {
_alpm_log(PM_LOG_ERROR, "could not remove database entry %s/%s", db->treename,
((pmpkg_t *)lp->data)->name);
}
RET_ERR(PM_ERR_XXX, -1);
}
}
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/* Cache needs to be rebuild */
db_free_pkgcache(db);
/* uncompress the sync database */
/* ORE
we should not simply unpack the archive, but better parse it and
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db_write each entry (see sync_load_dbarchive to get archive content) */
_alpm_log(PM_LOG_FLOW2, "unpacking %s", archive);
if(_alpm_unpack(archive, db->path, NULL)) {
RET_ERR(PM_ERR_XXX, -1);
}
if(ts && strlen(ts) != 0) {
if(db_setlastupdate(db, ts) == -1) {
RET_ERR(PM_ERR_XXX, -1);
}
}
return(0);
}
pmpkg_t *alpm_db_readpkg(pmdb_t *db, char *name)
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{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
ASSERT(name != NULL && strlen(name) != 0, return(NULL));
return(db_get_pkgfromcache(db, name));
}
PMList *alpm_db_getpkgcache(pmdb_t *db)
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{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
return(db_get_pkgcache(db));
}
pmgrp_t *alpm_db_readgrp(pmdb_t *db, char *name)
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{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
ASSERT(name != NULL && strlen(name) != 0, return(NULL));
return(db_get_grpfromcache(db, name));
}
PMList *alpm_db_getgrpcache(pmdb_t *db)
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{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
return(db_get_grpcache(db));
}
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/** @} */
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/** @defgroup alpm_packages Package Functions
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* @{
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*/
void *alpm_pkg_getinfo(pmpkg_t *pkg, unsigned char parm)
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{
void *data = NULL;
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/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
/* Update the cache package entry if needed */
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if(pkg->origin == PKG_FROM_CACHE) {
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switch(parm) {
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/* Desc entry */
case PM_PKG_NAME:
case PM_PKG_VERSION:
case PM_PKG_DESC:
case PM_PKG_GROUPS:
case PM_PKG_URL:
case PM_PKG_LICENSE:
case PM_PKG_ARCH:
case PM_PKG_BUILDDATE:
case PM_PKG_INSTALLDATE:
case PM_PKG_PACKAGER:
case PM_PKG_SIZE:
case PM_PKG_REASON:
case PM_PKG_MD5SUM:
if(!(pkg->infolevel & INFRQ_DESC)) {
char target[PKG_FULLNAME_LEN];
snprintf(target, PKG_FULLNAME_LEN, "%s-%s", pkg->name, pkg->version);
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db_read(pkg->data, target, INFRQ_DESC, pkg);
}
break;
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/* Depends entry */
/* not needed: the cache is loaded with DEPENDS by default
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case PM_PKG_DEPENDS:
case PM_PKG_REQUIREDBY:
case PM_PKG_CONFLICTS:
case PM_PKG_PROVIDES:
case PM_PKG_REPLACES:
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if(!(pkg->infolevel & INFRQ_DEPENDS)) {
char target[PKG_FULLNAME_LEN];
snprintf(target, PKG_FULLNAME_LEN, "%s-%s", pkg->name, pkg->version);
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db_read(pkg->data, target, INFRQ_DEPENDS, pkg);
}
break;*/
/* Files entry */
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case PM_PKG_FILES:
case PM_PKG_BACKUP:
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if(pkg->data == handle->db_local && !(pkg->infolevel & INFRQ_FILES)) {
char target[PKG_FULLNAME_LEN];
snprintf(target, PKG_FULLNAME_LEN, "%s-%s", pkg->name, pkg->version);
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db_read(pkg->data, target, INFRQ_FILES, pkg);
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}
break;
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/* Scriptlet */
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case PM_PKG_SCRIPLET:
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if(pkg->data == handle->db_local && !(pkg->infolevel & INFRQ_SCRIPLET)) {
char target[PKG_FULLNAME_LEN];
snprintf(target, PKG_FULLNAME_LEN, "%s-%s", pkg->name, pkg->version);
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db_read(pkg->data, target, INFRQ_SCRIPLET, pkg);
}
break;
}
}
switch(parm) {
case PM_PKG_NAME: data = pkg->name; break;
case PM_PKG_VERSION: data = pkg->version; break;
case PM_PKG_DESC: data = pkg->desc; break;
case PM_PKG_GROUPS: data = pkg->groups; break;
case PM_PKG_URL: data = pkg->url; break;
case PM_PKG_ARCH: data = pkg->arch; break;
case PM_PKG_BUILDDATE: data = pkg->builddate; break;
case PM_PKG_INSTALLDATE: data = pkg->installdate; break;
case PM_PKG_PACKAGER: data = pkg->packager; break;
case PM_PKG_SIZE: data = (void *)pkg->size; break;
case PM_PKG_REASON: data = (void *)(int)pkg->reason; break;
case PM_PKG_LICENSE: data = pkg->license; break;
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case PM_PKG_REPLACES: data = pkg->replaces; break;
case PM_PKG_MD5SUM: data = pkg->md5sum; break;
case PM_PKG_DEPENDS: data = pkg->depends; break;
case PM_PKG_REQUIREDBY: data = pkg->requiredby; break;
case PM_PKG_PROVIDES: data = pkg->provides; break;
case PM_PKG_CONFLICTS: data = pkg->conflicts; break;
case PM_PKG_FILES: data = pkg->files; break;
case PM_PKG_BACKUP: data = pkg->backup; break;
case PM_PKG_SCRIPLET: data = (void *)(int)pkg->scriptlet; break;
case PM_PKG_DATA: data = pkg->data; break;
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default:
data = NULL;
break;
}
return(data);
}
int alpm_pkg_load(char *filename, pmpkg_t **pkg)
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{
/* Sanity checks */
ASSERT(filename != NULL && strlen(filename) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
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*pkg = pkg_load(filename);
if(*pkg == NULL) {
/* pm_errno is set by pkg_load */
return(-1);
}
return(0);
}
int alpm_pkg_free(pmpkg_t *pkg)
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{
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
ASSERT(pkg->origin != PKG_FROM_CACHE, RET_ERR(PM_ERR_XXX, -1));
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pkg_free(pkg);
return(0);
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}
int alpm_pkg_vercmp(const char *ver1, const char *ver2)
{
return(versioncmp(ver1, ver2));
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}
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/** @} */
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/** @defgroup alpm_groups Group Functions
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* @{
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*/
void *alpm_grp_getinfo(pmgrp_t *grp, unsigned char parm)
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{
void *data = NULL;
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/* Sanity checks */
ASSERT(grp != NULL, return(NULL));
switch(parm) {
case PM_GRP_NAME: data = grp->name; break;
case PM_GRP_PKGNAMES: data = grp->packages; break;
default:
data = NULL;
break;
}
return(data);
}
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/** @} */
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/** @defgroup alpm_sync Sync Functions
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* @{
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*/
void *alpm_sync_getinfo(pmsyncpkg_t *sync, unsigned char parm)
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{
void *data;
/* Sanity checks */
ASSERT(sync != NULL, return(NULL));
switch(parm) {
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case PM_SYNC_TYPE: data = (void *)(int)sync->type; break;
case PM_SYNC_PKG: data = sync->pkg; break;
case PM_SYNC_DATA: data = sync->data; break;
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default:
data = NULL;
break;
}
return(data);
}
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/** @} */
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/** @defgroup alpm_trans Transaction Functions
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* @{
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*/
void *alpm_trans_getinfo(unsigned char parm)
{
pmtrans_t *trans;
void *data;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(handle->trans != NULL, return(NULL));
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trans = handle->trans;
switch(parm) {
case PM_TRANS_TYPE: data = (void *)(int)trans->type; break;
case PM_TRANS_FLAGS: data = (void *)(int)trans->flags; break;
case PM_TRANS_TARGETS: data = trans->targets; break;
case PM_TRANS_PACKAGES: data = trans->packages; break;
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default:
data = NULL;
break;
}
return(data);
}
int alpm_trans_init(unsigned char type, unsigned char flags, alpm_trans_cb_event event, alpm_trans_cb_conv conv)
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{
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
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ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1));
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handle->trans = trans_new();
if(handle->trans == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
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}
return(trans_init(handle->trans, type, flags, event, conv));
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}
int alpm_trans_sysupgrade()
{
pmtrans_t *trans;
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
trans = handle->trans;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));
ASSERT(trans->type == PM_TRANS_TYPE_SYNC, RET_ERR(PM_ERR_XXX, -1));
return(trans_sysupgrade(trans));
}
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int alpm_trans_addtarget(char *target)
{
pmtrans_t *trans;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(target != NULL && strlen(target) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));
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trans = handle->trans;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));
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return(trans_addtarget(trans, target));
}
int alpm_trans_prepare(PMList **data)
{
pmtrans_t *trans;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
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trans = handle->trans;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));
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return(trans_prepare(handle->trans, data));
}
int alpm_trans_commit()
{
pmtrans_t *trans;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
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trans = handle->trans;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(trans->state == STATE_PREPARED, RET_ERR(PM_ERR_TRANS_NOT_PREPARED, -1));
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/* Check for database R/W permission */
ASSERT(handle->access == PM_ACCESS_RW, RET_ERR(PM_ERR_BADPERMS, -1));
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return(trans_commit(handle->trans));
}
int alpm_trans_release()
{
pmtrans_t *trans;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
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trans = handle->trans;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(trans->state != STATE_IDLE, RET_ERR(PM_ERR_TRANS_NULL, -1));
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FREETRANS(handle->trans);
return(0);
}
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/** @} */
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/** @defgroup alpm_dep Dependency Functions
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* @{
*/
void *alpm_dep_getinfo(pmdepmissing_t *miss, unsigned char parm)
{
void *data;
/* Sanity checks */
ASSERT(miss != NULL, return(NULL));
switch(parm) {
case PM_DEP_TARGET: data = (void *)(int)miss->target; break;
case PM_DEP_TYPE: data = (void *)(int)miss->type; break;
case PM_DEP_MOD: data = (void *)(int)miss->depend.mod; break;
case PM_DEP_NAME: data = miss->depend.name; break;
case PM_DEP_VERSION: data = miss->depend.version; break;
default:
data = NULL;
break;
}
return(data);
}
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/** @} */
/** @defgroup alpm_log Logging Functions
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* @{
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*/
int alpm_logaction(char *fmt, ...)
{
char str[LOG_STR_LEN];
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va_list args;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
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va_start(args, fmt);
vsnprintf(str, LOG_STR_LEN, fmt, args);
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va_end(args);
/* ORE
We should add a prefix to log strings depending on who called us.
If logaction was called by the frontend:
USER: <the frontend log>
and if called internally:
ALPM: <the library log>
Moreover, the frontend should be able to choose its prefix (USER by default?):
pacman: "PACMAN"
kpacman: "KPACMAN"
...
It allows to share the log file between several frontends and to actually
know who does what */
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return(_alpm_log_action(handle->usesyslog, handle->logfd, str));
}
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/** @} */
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/** @defgroup alpm_list List Manipulation Functions
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* @{
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*/
PMList *alpm_list_first(PMList *list)
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{
ASSERT(list != NULL, return(NULL));
return(list);
}
PMList *alpm_list_next(PMList *entry)
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{
ASSERT(entry != NULL, return(NULL));
return(entry->next);
}
void *alpm_list_getdata(PMList *entry)
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{
ASSERT(entry != NULL, return(NULL));
return(entry->data);
}
int alpm_list_free(PMList *entry)
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{
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FREELIST(entry);
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return(0);
}
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/** @} */
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/** @defgroup alpm_misc Miscellaneous Functions
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* @{
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*/
char *alpm_get_md5sum(char *name)
{
ASSERT(name != NULL, return(NULL));
return(MDFile(name));
}
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/* @} */
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/* vim: set ts=2 sw=2 noet: */