summaryrefslogtreecommitdiff
path: root/src/pacman/remove.c
blob: 96bb53739575dd6e6f9783e2e18bacf237cb547c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
/*
 *  remove.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 <fnmatch.h>
#include <stdlib.h>
#include <stdio.h>

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

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

static int fnmatch_cmp(const void *pattern, const void *string)
{
  return fnmatch(pattern, string, 0);
}

static int remove_target(const char *target)
{
  alpm_pkg_t *pkg;
  alpm_db_t *db_local = alpm_get_localdb(config->handle);
  alpm_list_t *p;

  if((pkg = alpm_db_get_pkg(db_local, target)) != NULL) {
    if(alpm_remove_pkg(config->handle, pkg) == -1) {
      pm_printf(ALPM_LOG_ERROR, "'%s': %s\n", target,
          alpm_strerror(alpm_errno(config->handle)));
      return -1;
    }
    config->explicit_removes = alpm_list_add(config->explicit_removes, pkg);
    return 0;
  }

    /* fallback to group */
  alpm_group_t *grp = alpm_db_get_group(db_local, target);
  if(grp == NULL) {
    pm_printf(ALPM_LOG_ERROR, _("target not found: %s\n"), target);
    return -1;
  }
  for(p = grp->packages; p; p = alpm_list_next(p)) {
    pkg = p->data;
    if(alpm_remove_pkg(config->handle, pkg) == -1) {
      pm_printf(ALPM_LOG_ERROR, "'%s': %s\n", target,
          alpm_strerror(alpm_errno(config->handle)));
      return -1;
    }
    config->explicit_removes = alpm_list_add(config->explicit_removes, pkg);
  }
  return 0;
}

/**
 * @brief Remove a specified list of packages.
 *
 * @param targets a list of packages (as strings) to remove from the system
 *
 * @return 0 on success, 1 on failure
 */
int pacman_remove(alpm_list_t *targets)
{
  int retval = 0;
  alpm_list_t *i, *data = NULL;

  if(targets == NULL) {
    pm_printf(ALPM_LOG_ERROR, _("no targets specified (use -h for help)\n"));
    return 1;
  }

  /* Step 0: create a new transaction */
  if(trans_init(config->flags, 0) == -1) {
    return 1;
  }

  /* Step 1: add targets to the created transaction */
  for(i = targets; i; i = alpm_list_next(i)) {
    char *target = i->data;
    char *targ = strchr(target, '/');
    if(targ && strncmp(target, "local"5) == 0) {
      targ++;
    } else {
      targ = target;
    }
    if(remove_target(targ) == -1) {
      retval = 1;
    }
  }

  if(retval == 1) {
    goto cleanup;
  }

  /* Step 2: prepare the transaction based on its type, targets and flags */
  if(alpm_trans_prepare(config->handle, &data) == -1) {
    alpm_errno_t err = alpm_errno(config->handle);
    pm_printf(ALPM_LOG_ERROR, _("failed to prepare transaction (%s)\n"),
            alpm_strerror(err));
    switch(err) {
      case ALPM_ERR_PKG_INVALID_ARCH:
        for(i = data; i; i = alpm_list_next(i)) {
          const char *pkg = i->data;
          printf(_(":: package %s does not have a valid architecture\n"), pkg);
        }
        break;
      case ALPM_ERR_UNSATISFIED_DEPS:
        for(i = data; i; i = alpm_list_next(i)) {
          alpm_depmissing_t *miss = i->data;
          char *depstring = alpm_dep_compute_string(miss->depend);
          printf(_(":: %s: requires %s\n"), miss->target, depstring);
          free(depstring);
        }
        break;
      default:
        break;
    }
    FREELIST(data);
    retval = 1;
    goto cleanup;
  }

  /* Search for holdpkg in target list */
  int holdpkg = 0;
  for(i = alpm_trans_get_remove(config->handle); i; i = alpm_list_next(i)) {
    alpm_pkg_t *pkg = i->data;
    if(alpm_list_find(config->holdpkg, alpm_pkg_get_name(pkg), fnmatch_cmp)) {
      pm_printf(ALPM_LOG_WARNING, _("%s is designated as a HoldPkg.\n"),
              alpm_pkg_get_name(pkg));
      holdpkg = 1;
    }
  }
  if(holdpkg && (noyes(_("HoldPkg was found in target list. Do you want to continue?")) == 0)) {
    retval = 1;
    goto cleanup;
  }

  /* Step 3: actually perform the removal */
  alpm_list_t *pkglist = alpm_trans_get_remove(config->handle);
  if(pkglist == NULL) {
    printf(_(" there is nothing to do\n"));
    goto cleanup; /* we are done */
  }

  if(config->print) {
    print_packages(pkglist);
    goto cleanup;
  }

  /* print targets and ask user confirmation */
  display_targets();
  printf("\n");
  if(yesno(_("Do you want to remove these packages?")) == 0) {
    retval = 1;
    goto cleanup;
  }

  if(alpm_trans_commit(config->handle, &data) == -1) {
    pm_printf(ALPM_LOG_ERROR, _("failed to commit transaction (%s)\n"),
            alpm_strerror(alpm_errno(config->handle)));
    retval = 1;
  }

  FREELIST(data);

  /* Step 4: release transaction resources */
cleanup:
  if(trans_release() == -1) {
    retval = 1;
  }
  return retval;
}

/* vim: set ts=2 sw=2 noet: */