path: root/lib/libalpm/handle.c

/*
 *  handle.c
 * 
 *  Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
 *  Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
 *  Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.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 <string.h>
#include <unistd.h>
#include <limits.h>
#include <sys/types.h>
#include <syslog.h>
#include <time.h>
#include <sys/stat.h>
#include <errno.h>

/* libalpm */
#include "handle.h"
#include "alpm_list.h"
#include "util.h"
#include "log.h"
#include "error.h"
#include "trans.h"
#include "alpm.h"
#include "server.h"

pmhandle_t *_alpm_handle_new()
{
  pmhandle_t *handle;

  handle = malloc(sizeof(pmhandle_t));
  if(handle == NULL) {
    _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes\n"), sizeof(pmhandle_t));
    RET_ERR(PM_ERR_MEMORY, NULL);
  }

  memset(handle, 0, sizeof(pmhandle_t));
  handle->lckfd = -1;
  handle->logstream = NULL;

  /* see if we're root or not */
  handle->uid = geteuid();
  handle->root = NULL;
  handle->dbpath = NULL;
  handle->cachedirs = NULL;
  handle->lockfile = NULL;
  handle->logfile = NULL;

  return(handle);
}

void _alpm_handle_free(pmhandle_t *handle)
{
  ALPM_LOG_FUNC;

  if(handle == NULL) {
    return;
  }

  /* close logfile */
  if(handle->logstream) {
    fclose(handle->logstream);
    handle->logstream= NULL;
  }
  if(handle->usesyslog) {
    handle->usesyslog = 0;
    closelog();
  }

  /* free memory */
  _alpm_trans_free(handle->trans);
  FREE(handle->root);
  FREE(handle->dbpath);
  FREELIST(handle->cachedirs);
  FREE(handle->logfile);
  FREE(handle->lockfile);
  FREE(handle->xfercommand);
  FREELIST(handle->dbs_sync);
  FREELIST(handle->noupgrade);
  FREELIST(handle->noextract);
  FREELIST(handle->ignorepkg);
  FREELIST(handle->holdpkg);
  FREE(handle);
}

alpm_cb_log SYMEXPORT alpm_option_get_logcb() { return (handle ? handle->logcb : NULL); }
alpm_cb_download SYMEXPORT alpm_option_get_dlcb() { return (handle ? handle->dlcb : NULL); }
const char SYMEXPORT *alpm_option_get_root() { return handle->root; }
const char SYMEXPORT *alpm_option_get_dbpath() { return handle->dbpath; }
alpm_list_t SYMEXPORT *alpm_option_get_cachedirs() { return handle->cachedirs; }
const char SYMEXPORT *alpm_option_get_logfile() { return handle->logfile; }
const char SYMEXPORT *alpm_option_get_lockfile() { return handle->lockfile; }
unsigned short SYMEXPORT alpm_option_get_usesyslog() { return handle->usesyslog; }
alpm_list_t SYMEXPORT *alpm_option_get_noupgrades() { return handle->noupgrade; }
alpm_list_t SYMEXPORT *alpm_option_get_noextracts() { return handle->noextract; }
alpm_list_t SYMEXPORT *alpm_option_get_ignorepkgs() { return handle->ignorepkg; }
alpm_list_t SYMEXPORT *alpm_option_get_holdpkgs() { return handle->holdpkg; }
time_t SYMEXPORT alpm_option_get_upgradedelay() { return handle->upgradedelay; }
const char SYMEXPORT *alpm_option_get_xfercommand() { return handle->xfercommand; }
unsigned short SYMEXPORT alpm_option_get_nopassiveftp() { return handle->nopassiveftp; }

pmdb_t SYMEXPORT *alpm_option_get_localdb() { return handle->db_local; }
alpm_list_t SYMEXPORT *alpm_option_get_syncdbs()
{
  return handle->dbs_sync;
}

void SYMEXPORT alpm_option_set_logcb(alpm_cb_log cb) { handle->logcb = cb; }

void SYMEXPORT alpm_option_set_dlcb(alpm_cb_download cb) { handle->dlcb = cb; }

int SYMEXPORT alpm_option_set_root(const char *root)
{
  struct stat st;
  char *realroot;
  size_t rootlen;

  ALPM_LOG_FUNC;

  if(!root) {
    pm_errno = PM_ERR_WRONG_ARGS;
    return(-1);
  }
  if(stat(root, &st) == -1 || !S_ISDIR(st.st_mode)) {
    pm_errno = PM_ERR_NOT_A_DIR;
    return(-1);
  }
  /* According to the man page, realpath is safe to use IFF the second arg is
   * NULL. */
  realroot = realpath(root, NULL);
  if(!realroot) {
    pm_errno = PM_ERR_NOT_A_DIR;
    return(-1);
  }

  /* verify root ends in a '/' */
  rootlen = strlen(realroot);
  if(realroot[rootlen-1] != '/') {
    rootlen += 1;
  }
  if(handle->root) {
    FREE(handle->root);
  }
  handle->root = calloc(rootlen + 1, sizeof(char));
  strncpy(handle->root, realroot, rootlen);
  handle->root[rootlen-1] = '/';
  FREE(realroot);
  _alpm_log(PM_LOG_DEBUG, "option 'root' = %s\n", handle->root);
  return(0);
}

int SYMEXPORT alpm_option_set_dbpath(const char *dbpath)
{
  struct stat st;
  size_t dbpathlen, lockfilelen;
  const char *lf = "db.lck";

  ALPM_LOG_FUNC;

  if(!dbpath) {
    pm_errno = PM_ERR_WRONG_ARGS;
    return(-1);
  }
  if(stat(dbpath, &st) == -1 || !S_ISDIR(st.st_mode)) {
    pm_errno = PM_ERR_NOT_A_DIR;
    return(-1);
  }
  /* verify dbpath ends in a '/' */
  dbpathlen = strlen(dbpath);
  if(dbpath[dbpathlen-1] != '/') {
    dbpathlen += 1;
  }
  if(handle->dbpath) {
    FREE(handle->dbpath);
  }
  handle->dbpath = calloc(dbpathlen+1, sizeof(char));
  strncpy(handle->dbpath, dbpath, dbpathlen);
  handle->dbpath[dbpathlen-1] = '/';
  _alpm_log(PM_LOG_DEBUG, "option 'dbpath' = %s\n", handle->dbpath);

  if(handle->lockfile) {
    FREE(handle->lockfile);
  }
  lockfilelen = strlen(handle->dbpath) + strlen(lf) + 1;
  handle->lockfile = calloc(lockfilelen, sizeof(char));
  snprintf(handle->lockfile, lockfilelen, "%s%s", handle->dbpath, lf);
  _alpm_log(PM_LOG_DEBUG, "option 'lockfile' = %s\n", handle->lockfile);
  return(0);
}

int SYMEXPORT alpm_option_add_cachedir(const char *cachedir)
{
  struct stat st;
  char *newcachedir;
  size_t cachedirlen;

  ALPM_LOG_FUNC;

  if(!cachedir) {
    pm_errno = PM_ERR_WRONG_ARGS;
    return(-1);
  }
  if(stat(cachedir, &st) == -1 || !S_ISDIR(st.st_mode)) {
    pm_errno = PM_ERR_NOT_A_DIR;
    return(-1);
  }
  /* verify cachedir ends in a '/' */
  cachedirlen = strlen(cachedir);
  if(cachedir[cachedirlen-1] != '/') {
    cachedirlen += 1;
  }
  newcachedir = calloc(cachedirlen + 1, sizeof(char));
  strncpy(newcachedir, cachedir, cachedirlen);
  newcachedir[cachedirlen-1] = '/';
  handle->cachedirs = alpm_list_add(handle->cachedirs, newcachedir);
  _alpm_log(PM_LOG_DEBUG, "option 'cachedir' = %s\n", newcachedir);
  return(0);
}

void SYMEXPORT alpm_option_set_cachedirs(alpm_list_t *cachedirs)
{
  if(handle->cachedirs) FREELIST(handle->cachedirs);
  if(cachedirs) handle->cachedirs = cachedirs;
}

int SYMEXPORT alpm_option_set_logfile(const char *logfile)
{
  char *oldlogfile = handle->logfile;
  FILE *oldlogstream = handle->logstream;

  ALPM_LOG_FUNC;

  if(!logfile) {
    pm_errno = PM_ERR_WRONG_ARGS;
    return(-1);
  }

  handle->logfile = strdup(logfile);
  handle->logstream = fopen(logfile, "a");
  if(handle->logstream == NULL) {
    /* TODO we probably want to do this at some point, but right now
     * it just blows up when a user calls pacman without privilages */
    _alpm_log(PM_LOG_DEBUG, "couldn't open logfile for writing, ignoring\n");
    /*
    if(errno == EACCES) {
      pm_errno = PM_ERR_BADPERMS;
    } else if(errno == ENOENT) {
      pm_errno = PM_ERR_NOT_A_DIR;
    } else {
      pm_errno = PM_ERR_SYSTEM;
    }
    * reset logfile to its previous value *
    FREE(handle->logfile);
    handle->logfile = oldlogfile;
    handle->logstream = oldlogstream;
    return(-1);
    */
  }

  if(oldlogfile) {
    FREE(oldlogfile);
  }
  if(oldlogstream) {
    fclose(oldlogstream);
  }
  _alpm_log(PM_LOG_DEBUG, "option 'logfile' = %s\n", handle->logfile);
  return(0);
}

void SYMEXPORT alpm_option_set_usesyslog(unsigned short usesyslog)
{
  handle->usesyslog = usesyslog;
}

void SYMEXPORT alpm_option_add_noupgrade(const char *pkg)
{
  handle->noupgrade = alpm_list_add(handle->noupgrade, strdup(pkg));
}

void SYMEXPORT alpm_option_set_noupgrades(alpm_list_t *noupgrade)
{
  if(handle->noupgrade) FREELIST(handle->noupgrade);
  if(noupgrade) handle->noupgrade = noupgrade;
}

void SYMEXPORT alpm_option_add_noextract(const char *pkg)
{
  handle->noextract = alpm_list_add(handle->noextract, strdup(pkg));
}

void SYMEXPORT alpm_option_set_noextracts(alpm_list_t *noextract)
{
  if(handle->noextract) FREELIST(handle->noextract);
  if(noextract) handle->noextract = noextract;
}

void SYMEXPORT alpm_option_add_ignorepkg(const char *pkg)
{
  handle->ignorepkg = alpm_list_add(handle->ignorepkg, strdup(pkg));
}

void alpm_option_set_ignorepkgs(alpm_list_t *ignorepkgs)
{
  if(handle->ignorepkg) FREELIST(handle->ignorepkg);
  if(ignorepkgs) handle->ignorepkg = ignorepkgs;
}

void SYMEXPORT alpm_option_add_holdpkg(const char *pkg)
{
  handle->holdpkg = alpm_list_add(handle->holdpkg, strdup(pkg));
}

void SYMEXPORT alpm_option_set_holdpkgs(alpm_list_t *holdpkgs)
{
  if(handle->holdpkg) FREELIST(handle->holdpkg);
  if(holdpkgs) handle->holdpkg = holdpkgs;
}

void SYMEXPORT alpm_option_set_upgradedelay(time_t delay)
{
  handle->upgradedelay = delay;
}

void SYMEXPORT alpm_option_set_xfercommand(const char *cmd)
{
  if(handle->xfercommand) FREE(handle->xfercommand);
  if(cmd) handle->xfercommand = strdup(cmd);
}

void SYMEXPORT alpm_option_set_nopassiveftp(unsigned short nopasv)
{
  handle->nopassiveftp = nopasv;
}

/* vim: set ts=2 sw=2 noet: */