usr.sbin/installer/libinstaller/package.c

   1 /*
   2  * Copyright (c)2004 The DragonFly Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  *   Redistributions of source code must retain the above copyright
   9  *   notice, this list of conditions and the following disclaimer.
  10  *
  11  *   Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in
  13  *   the documentation and/or other materials provided with the
  14  *   distribution.
  15  *
  16  *   Neither the name of the DragonFly Project nor the names of its
  17  *   contributors may be used to endorse or promote products derived
  18  *   from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  25  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  27  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  29  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  31  * OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * package.c
  36  * Manage installation etc of packages.
  37  * $Id: package.c,v 1.24 2005/02/06 21:05:18 cpressey Exp $
  38  */
  39
  40 #include <ctype.h>
  41 #include <stdarg.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45
  46 #include "libaura/dict.h"
  47 #include "libaura/fspred.h"
  48 #include "libaura/popen.h"
  49
  50 #include "libdfui/dfui.h"
  51
  52 #include "commands.h"
  53 #include "diskutil.h"
  54 #include "functions.h"
  55 #include "uiutil.h"
  56 #include "package.h"
  57
  58 /*
  59  * Determine whether a package is installed on a DragonFly HDD.
  60  */
  61 int
  62 pkg_exists(struct i_fn_args *a, const char *pkg)
  63 {
  64         return(is_dir("%smnt/var/db/pkg/%s", a->os_root, pkg));
  65 }
  66
  67 int
  68 pkg_clean(struct i_fn_args *a, struct commands *cmds)
  69 {
  70         command_add(cmds, "%s%s %smnt/ /%s '*'",
  71             a->os_root, cmd_name(a, "CHROOT"),
  72             a->os_root, cmd_name(a, "PKG_DELETE"));
  73         return(1);
  74 }
  75
  76 /*
  77  * Copy a package from an installation CD onto a DragonFly HDD.
  78  */
  79 int
  80 pkg_copy(struct i_fn_args *a, struct commands *cmds, const char *pkg_name,
  81          struct aura_dict *seen)
  82 {
  83         FILE *pipe;
  84         char *rpkg_name;
  85         char line[256];
  86         char pkg_suffix[256];
  87
  88         /*
  89          * Get all the packages that this package depends on, and
  90          * recursively pkg_copy them first, if they're not already there.
  91          *
  92          * XXX We should be sending this command through a command chain
  93          * right now so that we can get an accurate idea of what is being
  94          * run and so that it will be logged.  But unfortunately that's
  95          * not feasible, since this function is building another command
  96          * chain for later use.  So we use a pipe.
  97          */
  98         if ((pipe = aura_popen("%s%s -r %s", "r",
  99             a->os_root, cmd_name(a, "PKG_INFO"), pkg_name)) == NULL)
 100                 return(0);
 101
 102         while (fgets(line, 255, pipe) != NULL) {
 103                 /*
 104                  * Only look at lines that begin with 'Dependency:'.
 105                  */
 106                 if (strncmp(line, "Dependency:", 11) != 0)
 107                         continue;
 108                 rpkg_name = &line[12];
 109
 110                 /*
 111                  * Strip any trailing whitespace.
 112                  */
 113                 while (strlen(rpkg_name) > 0 &&
 114                        isspace(rpkg_name[strlen(rpkg_name) - 1])) {
 115                         rpkg_name[strlen(rpkg_name) - 1] = '\0';
 116                 }
 117
 118                 if (!pkg_exists(a, rpkg_name)) {
 119                         if (!pkg_copy(a, cmds, rpkg_name, seen)) {
 120                                 aura_pclose(pipe);
 121                                 return(0);
 122                         }
 123                 }
 124         }
 125         aura_pclose(pipe);
 126         snprintf(pkg_suffix, 256, "tgz");
 127         if (!pkg_exists(a, pkg_name) &&
 128             !aura_dict_exists(seen, pkg_name, strlen(pkg_name))) {
 129                 aura_dict_store(seen,
 130                     pkg_name, strlen(pkg_name), "", 0);
 131                 command_add(cmds, "%s%s -b %s %smnt/tmp/%s.%s",
 132                     a->os_root, cmd_name(a, "PKG_CREATE"),
 133                     pkg_name, a->os_root, pkg_name, pkg_suffix);
 134                 command_add(cmds, "%s%s %smnt/ /%s /tmp/%s.%s",
 135                     a->os_root, cmd_name(a, "CHROOT"),
 136                     a->os_root, cmd_name(a, "PKG_ADD"),
 137                     pkg_name, pkg_suffix);
 138                 command_add(cmds, "%s%s %smnt/tmp/%s.%s",
 139                     a->os_root, cmd_name(a, "RM"),
 140                     a->os_root, pkg_name, pkg_suffix);
 141         }
 142
 143         return(1);
 144 }
 145
 146 /*
 147  * Remove a package from a DragonFly HDD.
 148  */
 149 int
 150 pkg_remove(struct i_fn_args *a, struct commands *cmds, const char *pkg_name,
 151            struct aura_dict *seen)
 152 {
 153         FILE *pipe;
 154         char *command, *rpkg_name;
 155         char line[256];
 156         int seen_required_by = 0;
 157
 158         /*
 159          * Get all the packages that this package depends on, and
 160          * recursively pkg_copy them first, if they're not already there.
 161          */
 162         asprintf(&command,
 163             "%s%s %smnt/ /%s -R %s",
 164             a->os_root, cmd_name(a, "CHROOT"),
 165             a->os_root, cmd_name(a, "PKG_INFO"),
 166             pkg_name);
 167         pipe = popen(command, "r");
 168         free(command);
 169         if (pipe == NULL)
 170                 return(0);
 171
 172         while (fgets(line, 255, pipe) != NULL) {
 173                 /*
 174                  * Only look at lines that follow the "Required by:" line.
 175                  */
 176                 if (seen_required_by) {
 177                         rpkg_name = line;
 178                         /*
 179                          * Strip any trailing whitespace.
 180                          */
 181                         while (strlen(rpkg_name) > 0 &&
 182                                isspace(rpkg_name[strlen(rpkg_name) - 1])) {
 183                                 rpkg_name[strlen(rpkg_name) - 1] = '\0';
 184                         }
 185
 186                         if (strlen(rpkg_name) > 0 && pkg_exists(a, rpkg_name)) {
 187                                 if (!pkg_remove(a, cmds, rpkg_name, seen)) {
 188                                         pclose(pipe);
 189                                         return(0);
 190                                 }
 191                         }
 192                 } else {
 193                         if (strncmp(line, "Required by:", 12) != 0) {
 194                                 seen_required_by = 1;
 195                         }
 196                 }
 197         }
 198         pclose(pipe);
 199
 200         if (pkg_exists(a, pkg_name) &&
 201             !aura_dict_exists(seen, pkg_name, strlen(pkg_name))) {
 202                 aura_dict_store(seen,
 203                     pkg_name, strlen(pkg_name), "", 0);
 204                 command_add(cmds, "%s%s %smnt/ /%s %s",
 205                     a->os_root, cmd_name(a, "CHROOT"),
 206                     a->os_root, cmd_name(a, "PKG_DELETE"),
 207                     pkg_name);
 208         }
 209
 210         return(1);
 211 }