1 | /*
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2 | * sestatus -- displays the status of SELinux
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3 | *
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4 | * Ported to busybox: KaiGai Kohei <kaigai@ak.jp.nec.com>
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5 | *
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6 | * Copyright (C) KaiGai Kohei <kaigai@ak.jp.nec.com>
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7 | *
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8 | * Licensed under GPLv2, see file LICENSE in this source tree.
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9 | */
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10 |
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11 | #include "libbb.h"
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12 |
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13 | extern char *selinux_mnt;
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14 |
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15 | #define OPT_VERBOSE (1 << 0)
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16 | #define OPT_BOOLEAN (1 << 1)
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17 |
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18 | #define COL_FMT "%-31s "
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19 |
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20 | static void display_boolean(void)
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21 | {
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22 | char **bools;
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23 | int i, active, pending, nbool;
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24 |
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25 | if (security_get_boolean_names(&bools, &nbool) < 0)
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26 | return;
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27 |
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28 | puts("\nPolicy booleans:");
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29 |
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30 | for (i = 0; i < nbool; i++) {
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31 | active = security_get_boolean_active(bools[i]);
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32 | if (active < 0)
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33 | goto skip;
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34 | pending = security_get_boolean_pending(bools[i]);
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35 | if (pending < 0)
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36 | goto skip;
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37 | printf(COL_FMT "%s",
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38 | bools[i], active == 0 ? "off" : "on");
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39 | if (active != pending)
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40 | printf(" (%sactivate pending)", pending == 0 ? "in" : "");
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41 | bb_putchar('\n');
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42 | skip:
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43 | if (ENABLE_FEATURE_CLEAN_UP)
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44 | free(bools[i]);
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45 | }
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46 | if (ENABLE_FEATURE_CLEAN_UP)
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47 | free(bools);
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48 | }
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49 |
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50 | static void read_config(char **pc, int npc, char **fc, int nfc)
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51 | {
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52 | char *buf;
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53 | parser_t *parser;
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54 | int pc_ofs = 0, fc_ofs = 0, section = -1;
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55 |
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56 | pc[0] = fc[0] = NULL;
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57 |
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58 | parser = config_open("/etc/sestatus.conf");
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59 | while (config_read(parser, &buf, 1, 1, "# \t", PARSE_NORMAL)) {
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60 | if (strcmp(buf, "[process]") == 0) {
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61 | section = 1;
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62 | } else if (strcmp(buf, "[files]") == 0) {
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63 | section = 2;
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64 | } else {
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65 | if (section == 1 && pc_ofs < npc -1) {
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66 | pc[pc_ofs++] = xstrdup(buf);
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67 | pc[pc_ofs] = NULL;
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68 | } else if (section == 2 && fc_ofs < nfc - 1) {
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69 | fc[fc_ofs++] = xstrdup(buf);
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70 | fc[fc_ofs] = NULL;
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71 | }
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72 | }
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73 | }
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74 | config_close(parser);
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75 | }
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76 |
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77 | static void display_verbose(void)
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78 | {
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79 | security_context_t con, _con;
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80 | char *fc[50], *pc[50], *cterm;
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81 | pid_t *pidList;
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82 | int i;
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83 |
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84 | read_config(pc, ARRAY_SIZE(pc), fc, ARRAY_SIZE(fc));
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85 |
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86 | /* process contexts */
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87 | puts("\nProcess contexts:");
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88 |
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89 | /* current context */
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90 | if (getcon(&con) == 0) {
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91 | printf(COL_FMT "%s\n", "Current context:", con);
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92 | if (ENABLE_FEATURE_CLEAN_UP)
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93 | freecon(con);
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94 | }
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95 | /* /sbin/init context */
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96 | if (getpidcon(1, &con) == 0) {
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97 | printf(COL_FMT "%s\n", "Init context:", con);
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98 | if (ENABLE_FEATURE_CLEAN_UP)
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99 | freecon(con);
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100 | }
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101 |
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102 | /* [process] context */
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103 | for (i = 0; pc[i] != NULL; i++) {
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104 | pidList = find_pid_by_name(bb_basename(pc[i]));
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105 | if (pidList[0] > 0 && getpidcon(pidList[0], &con) == 0) {
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106 | printf(COL_FMT "%s\n", pc[i], con);
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107 | if (ENABLE_FEATURE_CLEAN_UP)
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108 | freecon(con);
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109 | }
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110 | if (ENABLE_FEATURE_CLEAN_UP)
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111 | free(pidList);
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112 | }
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113 |
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114 | /* files contexts */
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115 | puts("\nFile contexts:");
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116 |
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117 | cterm = xmalloc_ttyname(0);
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118 | //FIXME: if cterm == NULL, we segfault!??
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119 | puts(cterm);
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120 | if (cterm && lgetfilecon(cterm, &con) >= 0) {
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121 | printf(COL_FMT "%s\n", "Controlling term:", con);
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122 | if (ENABLE_FEATURE_CLEAN_UP)
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123 | freecon(con);
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124 | }
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125 |
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126 | for (i = 0; fc[i] != NULL; i++) {
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127 | struct stat stbuf;
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128 |
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129 | if (lgetfilecon(fc[i], &con) < 0)
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130 | continue;
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131 | if (lstat(fc[i], &stbuf) == 0) {
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132 | if (S_ISLNK(stbuf.st_mode)) {
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133 | if (getfilecon(fc[i], &_con) >= 0) {
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134 | printf(COL_FMT "%s -> %s\n", fc[i], _con, con);
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135 | if (ENABLE_FEATURE_CLEAN_UP)
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136 | freecon(_con);
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137 | }
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138 | } else {
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139 | printf(COL_FMT "%s\n", fc[i], con);
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140 | }
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141 | }
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142 | if (ENABLE_FEATURE_CLEAN_UP)
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143 | freecon(con);
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144 | }
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145 | }
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146 |
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147 | int sestatus_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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148 | int sestatus_main(int argc UNUSED_PARAM, char **argv)
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149 | {
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150 | unsigned opts;
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151 | const char *pol_path;
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152 | int rc;
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153 |
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154 | opt_complementary = "?0"; /* no arguments are required. */
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155 | opts = getopt32(argv, "vb");
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156 |
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157 | /* SELinux status: line */
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158 | rc = is_selinux_enabled();
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159 | if (rc < 0)
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160 | goto error;
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161 | printf(COL_FMT "%s\n", "SELinux status:",
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162 | rc == 1 ? "enabled" : "disabled");
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163 |
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164 | /* SELinuxfs mount: line */
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165 | if (!selinux_mnt)
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166 | goto error;
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167 | printf(COL_FMT "%s\n", "SELinuxfs mount:",
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168 | selinux_mnt);
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169 |
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170 | /* Current mode: line */
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171 | rc = security_getenforce();
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172 | if (rc < 0)
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173 | goto error;
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174 | printf(COL_FMT "%s\n", "Current mode:",
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175 | rc == 0 ? "permissive" : "enforcing");
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176 |
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177 | /* Mode from config file: line */
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178 | if (selinux_getenforcemode(&rc) != 0)
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179 | goto error;
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180 | printf(COL_FMT "%s\n", "Mode from config file:",
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181 | rc < 0 ? "disabled" : (rc == 0 ? "permissive" : "enforcing"));
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182 |
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183 | /* Policy version: line */
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184 | rc = security_policyvers();
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185 | if (rc < 0)
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186 | goto error;
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187 | printf(COL_FMT "%u\n", "Policy version:", rc);
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188 |
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189 | /* Policy from config file: line */
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190 | pol_path = selinux_policy_root();
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191 | if (!pol_path)
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192 | goto error;
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193 | printf(COL_FMT "%s\n", "Policy from config file:",
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194 | bb_basename(pol_path));
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195 |
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196 | if (opts & OPT_BOOLEAN)
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197 | display_boolean();
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198 | if (opts & OPT_VERBOSE)
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199 | display_verbose();
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200 |
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201 | return 0;
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202 |
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203 | error:
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204 | bb_perror_msg_and_die("libselinux returns unknown state");
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205 | }
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