path: root/src/pacman/package.c

/*
 *  package.c
 *
 *  Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
 *  Copyright (c) 2002-2006 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, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>

#include <alpm.h>
#include <alpm_list.h>

/* pacman */
#include "package.h"
#include "util.h"

#define CLBUF_SIZE 4096

/**
 * Display the details of a package.
 * Extra information entails 'required by' info for sync packages and backup
 * files info for local packages.
 * @param pkg package to display information for
 * @param from the type of package we are dealing with
 * @param extra should we show extra information
 */
void dump_pkg_full(pmpkg_t *pkg, enum pkg_from from, int extra)
{
  const char *reason;
  time_t bdate, idate;
  char bdatestr[50] = "", idatestr[50] = "";
  const char *label;
  double size;
  const alpm_list_t *i;
  alpm_list_t *requiredby = NULL, *depstrings = NULL;

  if(pkg == NULL) {
    return;
  }

  /* set variables here, do all output below */
  bdate = alpm_pkg_get_builddate(pkg);
  if(bdate) {
    strftime(bdatestr, 50, "%c", localtime(&bdate));
  }
  idate = alpm_pkg_get_installdate(pkg);
  if(idate) {
    strftime(idatestr, 50, "%c", localtime(&idate));
  }

  switch((long)alpm_pkg_get_reason(pkg)) {
    case PM_PKG_REASON_EXPLICIT:
      reason = _("Explicitly installed");
      break;
    case PM_PKG_REASON_DEPEND:
      reason = _("Installed as a dependency for another package");
      break;
    default:
      reason = _("Unknown");
      break;
  }

  /* turn depends list into a text list */
  for(i = alpm_pkg_get_depends(pkg); i; i = alpm_list_next(i)) {
    pmdepend_t *dep = (pmdepend_t *)alpm_list_getdata(i);
    depstrings = alpm_list_add(depstrings, alpm_dep_compute_string(dep));
  }

  if(extra || from == PKG_FROM_LOCALDB) {
    /* compute this here so we don't get a pause in the middle of output */
    requiredby = alpm_pkg_compute_requiredby(pkg);
  }

  /* actual output */
  if(from == PKG_FROM_SYNCDB) {
    string_display(_("Repository     :"),
        alpm_db_get_name(alpm_pkg_get_db(pkg)));
  }
  string_display(_("Name           :"), alpm_pkg_get_name(pkg));
  string_display(_("Version        :"), alpm_pkg_get_version(pkg));
  string_display(_("URL            :"), alpm_pkg_get_url(pkg));
  list_display(_("Licenses       :"), alpm_pkg_get_licenses(pkg));
  list_display(_("Groups         :"), alpm_pkg_get_groups(pkg));
  list_display(_("Provides       :"), alpm_pkg_get_provides(pkg));
  list_display(_("Depends On     :"), depstrings);
  list_display_linebreak(_("Optional Deps  :"), alpm_pkg_get_optdepends(pkg));
  if(extra || from == PKG_FROM_LOCALDB) {
    list_display(_("Required By    :"), requiredby);
  }
  list_display(_("Conflicts With :"), alpm_pkg_get_conflicts(pkg));
  list_display(_("Replaces       :"), alpm_pkg_get_replaces(pkg));

  size = humanize_size(alpm_pkg_get_size(pkg), 'K', 1, &label);
  if(from == PKG_FROM_SYNCDB) {
    printf(_("Download Size  : %6.2f %s\n"), size, label);
  } else if(from == PKG_FROM_FILE) {
    printf(_("Compressed Size: %6.2f %s\n"), size, label);
  }

  size = humanize_size(alpm_pkg_get_isize(pkg), 'K', 1, &label);
  printf(_("Installed Size : %6.2f %s\n"), size, label);

  string_display(_("Packager       :"), alpm_pkg_get_packager(pkg));
  string_display(_("Architecture   :"), alpm_pkg_get_arch(pkg));
  string_display(_("Build Date     :"), bdatestr);
  if(from == PKG_FROM_LOCALDB) {
    string_display(_("Install Date   :"), idatestr);
    string_display(_("Install Reason :"), reason);
  }
  if(from == PKG_FROM_FILE || from == PKG_FROM_LOCALDB) {
    string_display(_("Install Script :"),
        alpm_pkg_has_scriptlet(pkg) ?  _("Yes") : _("No"));
  }

  if(from == PKG_FROM_SYNCDB) {
    string_display(_("MD5 Sum        :"), alpm_pkg_get_md5sum(pkg));
  }
  string_display(_("Description    :"), alpm_pkg_get_desc(pkg));

  /* Print additional package info if info flag passed more than once */
  if(from == PKG_FROM_LOCALDB && extra) {
    dump_pkg_backups(pkg);
  }

  /* final newline to separate packages */
  printf("\n");

  FREELIST(depstrings);
  FREELIST(requiredby);
}

static const char *get_backup_file_status(const char *root,
    const char *filename, const char *expected_md5)
{
  char path[PATH_MAX];
  char *ret;

  snprintf(path, PATH_MAX, "%s%s", root, filename);

  /* if we find the file, calculate checksums, otherwise it is missing */
  if(access(path, R_OK) == 0) {
    char *md5sum = alpm_compute_md5sum(path);

    if(md5sum == NULL) {
      pm_fprintf(stderr, PM_LOG_ERROR,
          _("could not calculate checksums for %s\n"), path);
      return NULL;
    }

    /* if checksums don't match, file has been modified */
    if(strcmp(md5sum, expected_md5) != 0) {
      ret = "MODIFIED";
    } else {
      ret = "UNMODIFIED";
    }
    free(md5sum);
  } else {
    switch(errno) {
      case EACCES:
        ret = "UNREADABLE";
        break;
      case ENOENT:
        ret = "MISSING";
        break;
      default:
        ret = "UNKNOWN";
    }
  }
  return ret;
}

/* Display list of backup files and their modification states
 */
void dump_pkg_backups(pmpkg_t *pkg)
{
  alpm_list_t *i;
  const char *root = alpm_option_get_root();
  printf(_("Backup Files:\n"));
  if(alpm_pkg_get_backup(pkg)) {
    /* package has backup files, so print them */
    for(i = alpm_pkg_get_backup(pkg); i; i = alpm_list_next(i)) {
      const char *value;
      char *str = strdup(alpm_list_getdata(i));
      char *ptr = strchr(str, '\t');
      if(ptr == NULL) {
        free(str);
        continue;
      }
      *ptr = '\0';
      ptr++;
      value = get_backup_file_status(root, str, ptr);
      printf("%s\t%s%s\n", value, root, str);
      free(str);
    }
  } else {
    /* package had no backup files */
    printf(_("(none)\n"));
  }
}

/* List all files contained in a package
 */
void dump_pkg_files(pmpkg_t *pkg, int quiet)
{
  const char *pkgname, *root, *filestr;
  alpm_list_t *i, *pkgfiles;

  pkgname = alpm_pkg_get_name(pkg);
  pkgfiles = alpm_pkg_get_files(pkg);
  root = alpm_option_get_root();

  for(i = pkgfiles; i; i = alpm_list_next(i)) {
    filestr = alpm_list_getdata(i);
    if(!quiet){
      fprintf(stdout, "%s %s%s\n", pkgname, root, filestr);
    } else {
      fprintf(stdout, "%s%s\n", root, filestr);
    }
  }

  fflush(stdout);
}

/* Display the changelog of a package
 */
void dump_pkg_changelog(pmpkg_t *pkg)
{
  void *fp = NULL;

  if((fp = alpm_pkg_changelog_open(pkg)) == NULL) {
    pm_fprintf(stderr, PM_LOG_ERROR, _("no changelog available for '%s'.\n"),
        alpm_pkg_get_name(pkg));
    return;
  } else {
    /* allocate a buffer to get the changelog back in chunks */
    char buf[CLBUF_SIZE];
    size_t ret = 0;
    while((ret = alpm_pkg_changelog_read(buf, CLBUF_SIZE, pkg, fp))) {
      if(ret < CLBUF_SIZE) {
        /* if we hit the end of the file, we need to add a null terminator */
        *(buf + ret) = '\0';
      }
      printf("%s", buf);
    }
    alpm_pkg_changelog_close(pkg, fp);
    printf("\n");
  }
}

/* vim: set ts=2 sw=2 noet: */