external/bsd/pkg_install/dist/lib/parse-config.c

   1 /*      $NetBSD: parse-config.c,v 1.12 2009/10/21 17:10:36 joerg Exp $  */
   2
   3 #if HAVE_CONFIG_H
   4 #include "config.h"
   5 #endif
   6 #include <nbcompat.h>
   7 #if HAVE_SYS_CDEFS_H
   8 #include <sys/cdefs.h>
   9 #endif
  10 __RCSID("$NetBSD: parse-config.c,v 1.12 2009/10/21 17:10:36 joerg Exp $");
  11
  12 /*-
  13  * Copyright (c) 2008, 2009 Joerg Sonnenberger <joerg@NetBSD.org>.
  14  * All rights reserved.
  15  *
  16  * Redistribution and use in source and binary forms, with or without
  17  * modification, are permitted provided that the following conditions
  18  * are met:
  19  *
  20  * 1. Redistributions of source code must retain the above copyright
  21  *    notice, this list of conditions and the following disclaimer.
  22  * 2. Redistributions in binary form must reproduce the above copyright
  23  *    notice, this list of conditions and the following disclaimer in
  24  *    the documentation and/or other materials provided with the
  25  *    distribution.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  30  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  31  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  32  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  33  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  34  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  35  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  36  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  */
  40
  41 #if HAVE_ERR_H
  42 #include <err.h>
  43 #endif
  44 #include <errno.h>
  45 #if HAVE_STRING_H
  46 #include <string.h>
  47 #endif
  48
  49 #include "lib.h"
  50
  51 const char     *config_file = SYSCONFDIR"/pkg_install.conf";
  52
  53 char fetch_flags[10] = ""; /* Workaround Mac OS X linker issues with BSS */
  54 static const char *active_ftp;
  55 static const char *verbose_netio;
  56 static const char *ignore_proxy;
  57 const char *cache_index = "yes";
  58 const char *cert_chain_file;
  59 const char *certs_packages;
  60 const char *certs_pkg_vulnerabilities;
  61 const char *check_vulnerabilities;
  62 const char *config_pkg_path;
  63 const char *do_license_check;
  64 const char *verified_installation;
  65 const char *gpg_cmd;
  66 const char *gpg_keyring_pkgvuln;
  67 const char *gpg_keyring_sign;
  68 const char *gpg_keyring_verify;
  69 const char *gpg_sign_as;
  70 const char *pkg_vulnerabilities_dir;
  71 const char *pkg_vulnerabilities_file;
  72 const char *pkg_vulnerabilities_url;
  73 const char *ignore_advisories = NULL;
  74 const char tnf_vulnerability_base[] = "http://ftp.NetBSD.org/pub/NetBSD/packages/vulns";
  75 const char *acceptable_licenses = NULL;
  76
  77 static struct config_variable {
  78         const char *name;
  79         const char **var;
  80 } config_variables[] = {
  81         { "ACCEPTABLE_LICENSES", &acceptable_licenses },
  82         { "ACTIVE_FTP", &active_ftp },
  83         { "CACHE_INDEX", &cache_index },
  84         { "CERTIFICATE_ANCHOR_PKGS", &certs_packages },
  85         { "CERTIFICATE_ANCHOR_PKGVULN", &certs_pkg_vulnerabilities },
  86         { "CERTIFICATE_CHAIN", &cert_chain_file },
  87         { "CHECK_LICENSE", &do_license_check },
  88         { "CHECK_VULNERABILITIES", &check_vulnerabilities },
  89         { "DEFAULT_ACCEPTABLE_LICENSES", &default_acceptable_licenses },
  90         { "GPG", &gpg_cmd },
  91         { "GPG_KEYRING_PKGVULN", &gpg_keyring_pkgvuln },
  92         { "GPG_KEYRING_SIGN", &gpg_keyring_sign },
  93         { "GPG_KEYRING_VERIFY", &gpg_keyring_verify },
  94         { "GPG_SIGN_AS", &gpg_sign_as },
  95         { "IGNORE_PROXY", &ignore_proxy },
  96         { "IGNORE_URL", &ignore_advisories },
  97         { "PKG_PATH", &config_pkg_path },
  98         { "PKGVULNDIR", &pkg_vulnerabilities_dir },
  99         { "PKGVULNURL", &pkg_vulnerabilities_url },
 100         { "VERBOSE_NETIO", &verbose_netio },
 101         { "VERIFIED_INSTALLATION", &verified_installation },
 102         { NULL, NULL }, /* For use by pkg_install_show_variable */
 103         { NULL, NULL }
 104 };
 105
 106 char *config_tmp_variables[sizeof config_variables/sizeof config_variables[0]];
 107
 108 static void
 109 parse_pkg_install_conf(void)
 110 {
 111         struct config_variable *var;
 112         FILE *fp;
 113         char *line, *value;
 114         size_t len, var_len, i;
 115
 116         fp = fopen(config_file, "r");
 117         if (!fp) {
 118                 if (errno != ENOENT)
 119                         warn("Can't open '%s' for reading", config_file);
 120                 return;
 121         }
 122
 123         while ((line = fgetln(fp, &len)) != (char *) NULL) {
 124                 if (line[len - 1] == '\n')
 125                         --len;
 126                 for (i = 0; (var = &config_variables[i])->name != NULL; ++i) {
 127                         var_len = strlen(var->name);
 128                         if (strncmp(var->name, line, var_len) != 0)
 129                                 continue;
 130                         if (line[var_len] != '=')
 131                                 continue;
 132                         line += var_len + 1;
 133                         len -= var_len + 1;
 134                         if (config_tmp_variables[i])
 135                                 value = xasprintf("%s\n%.*s",
 136                                     config_tmp_variables[i], (int)len, line);
 137                         else
 138                                 value = xasprintf("%.*s", (int)len, line);
 139                         free(config_tmp_variables[i]);
 140                         config_tmp_variables[i] = value;
 141                         break;
 142                 }
 143         }
 144
 145         for (i = 0; (var = &config_variables[i])->name != NULL; ++i) {
 146                 if (config_tmp_variables[i] == NULL)
 147                         continue;
 148                 *var->var = config_tmp_variables[i];
 149                 config_tmp_variables[i] = NULL;
 150         }
 151
 152         fclose(fp);
 153 }
 154
 155 void
 156 pkg_install_config(void)
 157 {
 158         int do_cache_index;
 159         char *value;
 160         parse_pkg_install_conf();
 161
 162         if (pkg_vulnerabilities_dir == NULL)
 163                 pkg_vulnerabilities_dir = _pkgdb_getPKGDB_DIR();
 164         pkg_vulnerabilities_file = xasprintf("%s/pkg-vulnerabilities",
 165             pkg_vulnerabilities_dir);
 166         if (pkg_vulnerabilities_url == NULL) {
 167                 pkg_vulnerabilities_url = xasprintf("%s/pkg-vulnerabilities.gz",
 168                     tnf_vulnerability_base);
 169         }
 170         if (verified_installation == NULL)
 171                 verified_installation = "never";
 172
 173         if (check_vulnerabilities == NULL)
 174                 check_vulnerabilities = "never";
 175
 176         if (do_license_check == NULL)
 177                 do_license_check = "no";
 178
 179         if ((value = getenv("PKG_PATH")) != NULL)
 180                 config_pkg_path = value;
 181
 182         if (strcasecmp(cache_index, "yes") == 0)
 183                 do_cache_index = 1;
 184         else {
 185                 if (strcasecmp(cache_index, "no"))
 186                         warnx("Invalid value for configuration option "
 187                             "CACHE_INDEX");
 188                 do_cache_index = 0;
 189         }
 190
 191         snprintf(fetch_flags, sizeof(fetch_flags), "%s%s%s%s",
 192             (do_cache_index) ? "c" : "",
 193             (verbose_netio && *verbose_netio) ? "v" : "",
 194             (active_ftp && *active_ftp) ? "a" : "",
 195             (ignore_proxy && *ignore_proxy) ? "d" : "");
 196 }
 197
 198 void
 199 pkg_install_show_variable(const char *var_name)
 200 {
 201         struct config_variable *var;
 202         const char *tmp_value = NULL;
 203
 204         for (var = config_variables; var->name != NULL; ++var) {
 205                 if (strcmp(var->name, var_name) == 0)
 206                         break;
 207         }
 208         if (var->name == NULL) {
 209                 var->name = var_name;
 210                 var->var = &tmp_value;
 211         }
 212
 213         pkg_install_config();
 214
 215         if (*var->var != NULL)
 216                 puts(*var->var);
 217 }