path: root/lib/libalpm/alpm.c

/*
 *  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 "rpmvercmp.h"
#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"

/* Globals */
pmhandle_t *handle = NULL;
enum __pmerrno_t pm_errno;

/*
 * Library
 */

int alpm_initialize(char *root)
{
  char str[PATH_MAX];

  ASSERT(handle == NULL, RET_ERR(PM_ERR_HANDLE_NOT_NULL, -1));

  handle = handle_new();

  /* lock db */
  if(handle->access == PM_ACCESS_RW) {
    if(_alpm_lckmk(PM_LOCK) == -1) {
      FREE(handle);
      RET_ERR(PM_ERR_HANDLE_LOCK, -1);
    }
  }

  STRNCPY(str, (root) ? root : PM_ROOT, PATH_MAX);
  /* add a trailing '/' if there isn't one */
  if(str[strlen(str)-1] != '/') {
    strcat(str, "/");
  }
  handle->root = strdup(str);

  return(0);
}

int alpm_release()
{
  PMList *i;

  ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));

  /* unlock db */
  if(handle->access == PM_ACCESS_RW) {
    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);
    }
  }

  /* 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) {
    if(i->data) {
      db_close(i->data);
      i->data = NULL;
    }
  }

  FREEHANDLE(handle);

  return(0);
}

/*
 * Options
 */

int alpm_set_option(unsigned char parm, unsigned long data)
{
  /* Sanity checks */
  ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));

  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));

  return(handle_get_option(handle, parm, data));
}

/*
 * Databases
 */

int alpm_db_register(char *treename, PM_DB **db)
{
  /* Sanity checks */
  ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
  ASSERT(treename != NULL && strlen(treename) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));
  ASSERT(db != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

  /* ORE
  check if the db if already registered */

  *db = db_open(handle->root, handle->dbpath, treename);
  if(*db == NULL) {
    /* couldn't open the db directory - try creating it */
    if(db_create(handle->root, handle->dbpath, treename) == -1) {
      RET_ERR(PM_ERR_DB_CREATE, -1);
    }
    *db = db_open(handle->root, handle->dbpath, treename);
    if(*db == NULL) {
      /* couldn't open the db directory, try creating it */<