annotate cinst/main.c @ 975:b3695a3399de

(issue86) Install into default directories on Linux If the mozilla process is now started as root it will try to write into the default directories for NSS Shared and mozilla / thunderbird profiles. Cinst will now start the mozilla process once as root.
author Andre Heinecke <andre.heinecke@intevation.de>
date Fri, 29 Aug 2014 12:59:44 +0200
parents 76c410aff382
children 78798d3af8f0
rev   line source
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1 /* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU GPL (v>=2)
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5 * and comes with ABSOLUTELY NO WARRANTY!
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6 * See LICENSE.txt for details.
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7 */
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8 /**
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9 * @file main.c
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10 * @brief Main entry point for the cinst process.
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11 *
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12 * The cinst process may or may not be run with elevated
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13 * privileges. When run with elevated privileges this
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14 * process will modify system wide certificate stores.
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15 * Otherwise only the users certificate stores are modified.
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16 *
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17 * The first parameter to this process should be list=<file_name>
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18 * of the certificate list to work on. The second parameter should
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19 * be choices=<choices_file_name>|uninstall
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20 *
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21 * choices_file_name should be the absolute path to an
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22 * choices file formatted as:
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23 *
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24 * I:<certificate>
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25 * R:<certificate>
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26 *
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27 * Line breaks can be system dependent in the Choices file.
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28 *
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29 * It will only execute the choices if the
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30 * I and R choices are also part of the signed
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31 * certificate list. The signature is validated with the
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32 * built in key.
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33 *
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34 * The special instruction "uninstall" will cause the installer
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35 * to remove all certificates (Even those marked with I) that
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36 * are part of the list.
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37 *
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38 **/
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39 #include <stdio.h>
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40 #include <stdlib.h>
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41 #include <string.h>
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42 #include <assert.h>
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43 #include <stdbool.h>
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44
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45 #include "strhelp.h"
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46 #include "listutil.h"
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47 #include "logging.h"
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48 #include "errorcodes.h"
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49 #include "windowsstore.h"
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50 #include "nssstore.h"
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51
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52 /* The certificate list + choices may only be so long as
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53 * twice the accepted certificatelist size */
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54 #define MAX_INPUT_SIZE MAX_LINE_LENGTH * MAX_LINES * 2
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55
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56 /* @brief Read stdin into data structures.
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57 *
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58 * Reads choices from an input file into the to_install
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59 * and to_remove buffers.
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60 *
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61 * Lines starting with I: are treated as install choices.
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62 * Lines starting with R: are treated as remove choices.
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63 * Other lines are ignored.
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64 *
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65 * Terminates in OOM conditions.
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66 *
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67 * The caller needs to free the memory allocated by this function
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68 * even when an error is returned.
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69 *
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70 * @param[in] file_name absolute path to the choices file.
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71 * @param[out] to_install strv of installation choices or NULL
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72 * @param[out] to_remove strv of remove choices or NULL
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73 *
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74 * @returns: 0 on success. An error code otherwise.
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75 */
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76 static int
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77 read_choices_file (char *file_name, char ***to_install,
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78 char ***to_remove)
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79 {
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80 int lines_read = 0;
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81 char buf[MAX_LINE_LENGTH + 2];
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82 FILE *f = NULL;
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83 long file_size;
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84
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85 if (*to_install || *to_remove)
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86 {
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87 ERRORPRINTF ("Error invalid parameters.\n");
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88 return -1;
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89 }
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90
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91 f = fopen (file_name, "rb");
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92 if (f == NULL)
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93 {
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94 ERRORPRINTF ("Failed to open file: %s\n", file_name);
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95 return ERR_NO_INSTRUCTIONS;
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96 }
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97
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98 fseek (f, 0, SEEK_END);
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99 file_size = ftell (f);
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100 if (file_size <= 0)
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101 {
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102 fclose (f);
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103 ERRORPRINTF ("File size error: %s\n", file_name);
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104 return ERR_NO_INSTRUCTIONS;
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105 }
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106
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107 fseek (f, 0, SEEK_SET);
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108
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109 if (file_size + 1 == 0)
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110 {
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111 fclose (f);
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112 ERRORPRINTF ("File seek error: %s\n", file_name);
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113 return ERR_INVALID_INSTRUCTIONS;
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114 }
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115
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116 while (fgets (buf, MAX_LINE_LENGTH + 1, f) )
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117 {
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118 size_t len = strlen (buf); /* fgets ensures buf is terminated */
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119 if (len <= 3)
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120 {
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121 ERRORPRINTF ("Line too short.\n");
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122 fclose (f);
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123 return ERR_INVALID_INPUT;
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124 }
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125 if (lines_read++ > MAX_LINES)
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126 {
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127 ERRORPRINTF ("Too many lines\n");
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128 fclose (f);
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129 return ERR_TOO_MUCH_INPUT;
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130 }
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131 if (*buf == 'I')
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132 {
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133 char *trimmed = buf+2;
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134 /* Remove leading I: and trailing whitespace */
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135 str_trim(&trimmed);
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136 strv_append (to_install, trimmed, strlen(trimmed));
163
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diff changeset
137 continue;
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diff changeset
138 }
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diff changeset
139 if (*buf == 'R')
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diff changeset
140 {
291
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diff changeset
141 char *trimmed = buf+2;
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diff changeset
142 /* Remove leading R: and trailing whitespace */
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diff changeset
143 str_trim(&trimmed);
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diff changeset
144 strv_append (to_remove, trimmed, strlen(trimmed));
163
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diff changeset
145 continue;
59
3f6378647371 Start work on cinst. Strhelp new helpers to work with C String
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parents: 26
diff changeset
146 }
3f6378647371 Start work on cinst. Strhelp new helpers to work with C String
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parents: 26
diff changeset
147 }
3f6378647371 Start work on cinst. Strhelp new helpers to work with C String
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parents: 26
diff changeset
148
339
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diff changeset
149 fclose (f);
163
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diff changeset
150 return 0;
59
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diff changeset
151 }
148
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152
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153 /** @brief Check that the insturctions match to the list
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154 *
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155 * Only certificates part of the certificate_list are allowed
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156 * for installation.
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157 *
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158 * @param[in] all_certs strv of all valid certificates in a list
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159 * @param[in] to_validate strv of choices
148
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160 *
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161 * @returns 0 on success, an error otherwise
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162 */
163
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163 int
382
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164 validate_choices (char **all_certs, char **to_validate)
64
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165 {
163
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166 int i = 0, j = 0;
148
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167
163
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168 if (!all_certs || strv_length (all_certs) < 1)
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169 {
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170 /* Invalid parameters */
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171 return -1;
148
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172 }
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173
163
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174 if (to_validate == NULL)
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175 {
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176 /* Nothing is valid */
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177 return 0;
148
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178 }
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179
163
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180 for (i = 0; to_validate[i]; i++)
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181 {
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182 bool found = false;
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183 for (j = 0; all_certs[j]; j++)
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184 {
291
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185 if (strncmp (to_validate[i], all_certs[j], MAX_LINE_LENGTH) ==
163
8cfcd38a9bb3 Change coding style for cinst main / windowsstore to GNU
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diff changeset
186 0)
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187 {
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188 found = true;
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189 break;
148
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190 }
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191 }
163
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192 if (!found)
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193 {
291
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194 DEBUGPRINTF ("Failed to find certificate; \n%s\n", to_validate[i]);
163
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195 return ERR_INVALID_INSTRUCTIONS;
148
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196 }
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197 }
65
e4088afd5281 Comment out validate instructions for now to avoid unused warnings
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198
163
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199 return 0;
64
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parents: 60
diff changeset
200 }
148
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diff changeset
201
68
8ffbb48528ae Add certificate installation for windows
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parents: 65
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202
163
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203 int
289
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204 main (int argc, char **argv)
163
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205 {
289
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206 /* TODO handle wchar arguments on Windows or do conversion dance */
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207 char **to_install = NULL,
905
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208 **to_remove = NULL,
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209 **all_valid_certs = NULL;
289
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210 int ret = -1;
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211
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212 char *certificate_list = NULL,
905
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213 *certificate_file_name = NULL,
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214 *choices_file_name = NULL;
163
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215 size_t list_len = 0;
289
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diff changeset
216 list_status_t list_status;
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217 bool do_uninstall = false;
60
6acb1dae6185 Use strn functions and improve error handling.
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parents: 59
diff changeset
218
382
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diff changeset
219 /* Some very static argument parsing. list= and choices= is only
289
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220 added to make it more transparent how this programm is called if
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diff changeset
221 a user looks at the detailed uac dialog. */
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diff changeset
222 if (argc != 3 || strncmp(argv[1], "list=", 5) != 0 ||
905
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223 strncmp(argv[2], "choices=", 8) != 0)
289
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diff changeset
224 {
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225 ERRORPRINTF ("Invalid arguments.\n"
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226 "Expected arguments: list=<certificate_list> \n"
382
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diff changeset
227 " choices=<choices_file>|uninstall\n");
289
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228 return ERR_INVALID_PARAMS;
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diff changeset
229 }
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
230
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diff changeset
231 certificate_file_name = strchr(argv[1], '=') + 1;
382
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diff changeset
232 choices_file_name = strchr(argv[2], '=') + 1;
289
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diff changeset
233
382
124f08a85532 Rename instructions to choices
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diff changeset
234 if (!certificate_file_name || !choices_file_name)
289
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diff changeset
235 {
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
236 ERRORPRINTF ("Invalid arguments.\n"
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
237 "Expected arguments: list=<certificate_list> \n"
382
124f08a85532 Rename instructions to choices
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diff changeset
238 " choices=<choices_file>|uninstall\n");
289
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
239 return ERR_INVALID_PARAMS;
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diff changeset
240 }
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
241
382
124f08a85532 Rename instructions to choices
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diff changeset
242 if (strncmp(choices_file_name, "uninstall", 9) == 0)
289
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diff changeset
243 {
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diff changeset
244 do_uninstall = true;
382
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diff changeset
245 choices_file_name = NULL;
289
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diff changeset
246 }
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diff changeset
247
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diff changeset
248 list_status = read_and_verify_list (certificate_file_name, &certificate_list,
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diff changeset
249 &list_len);
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diff changeset
250
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
251 if (list_status != Valid)
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parents: 247
diff changeset
252 {
9ad00a3255f4 Change cinst from stdin input to use arguments.
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parents: 247
diff changeset
253 if (list_status == InvalidSignature)
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parents: 247
diff changeset
254 {
382
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diff changeset
255 ERRORPRINTF ("Failed to verify signature.\n");
289
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diff changeset
256 return ERR_INVALID_SIGNATURE;
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parents: 247
diff changeset
257 }
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
258
382
124f08a85532 Rename instructions to choices
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diff changeset
259 ERRORPRINTF ("Failed to read certificate list.\n");
289
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diff changeset
260 return ERR_INVALID_INPUT_NO_LIST;
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diff changeset
261 }
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
262
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
263 all_valid_certs = get_certs_from_list (certificate_list, list_len);
944
76c410aff382 Fix two "memory leaks"
Andre Heinecke <andre.heinecke@intevation.de>
parents: 905
diff changeset
264 free (certificate_list);
289
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diff changeset
265
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
266 if (!all_valid_certs)
9ad00a3255f4 Change cinst from stdin input to use arguments.
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parents: 247
diff changeset
267 {
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diff changeset
268 /* Impossible */
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diff changeset
269 return -1;
9ad00a3255f4 Change cinst from stdin input to use arguments.
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diff changeset
270 }
9ad00a3255f4 Change cinst from stdin input to use arguments.
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parents: 247
diff changeset
271
9ad00a3255f4 Change cinst from stdin input to use arguments.
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parents: 247
diff changeset
272
9ad00a3255f4 Change cinst from stdin input to use arguments.
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273 /* For uninstall we are done now */
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274 if (do_uninstall)
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275 {
290
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276 #ifdef WIN32
302
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277 ret = write_stores_win (NULL, all_valid_certs);
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278 if (ret != 0)
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279 {
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280 ERRORPRINTF ("Failed to write windows stores retval: %i\n", ret);
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281 }
299
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282 #endif
302
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283 ret = write_stores_nss (NULL, all_valid_certs);
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284 strv_free (all_valid_certs);
302
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285 return ret;
289
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286 }
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287
382
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288 ret = read_choices_file (choices_file_name, &to_install,
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289 &to_remove);
148
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290
163
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291 if (ret)
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292 {
382
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293 ERRORPRINTF ("Failed to read choices file\n");
163
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294 return ret;
60
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295 }
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296
163
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297 if (!strv_length (to_install) && !strv_length (to_remove) )
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298 {
382
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299 ERRORPRINTF ("Failed to read choices file\n");
163
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300 return ERR_NO_INSTRUCTIONS;
64
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301 }
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302
382
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303 /* Check that the choices are ok to execute */
163
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304 if (to_install)
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305 {
382
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306 ret = validate_choices (all_valid_certs, to_install);
163
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307 if (ret)
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parents: 161
diff changeset
308 {
382
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309 ERRORPRINTF ("Failed to validate choices\n");
163
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diff changeset
310 return ret;
148
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parents: 137
diff changeset
311 }
64
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
312 }
68
8ffbb48528ae Add certificate installation for windows
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parents: 65
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313
163
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parents: 161
diff changeset
314 if (to_remove)
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parents: 161
diff changeset
315 {
382
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316 ret = validate_choices (all_valid_certs, to_remove);
289
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317 if (ret)
163
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diff changeset
318 {
382
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319 ERRORPRINTF ("Failed to validate removal choices\n");
289
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320 return ret;
68
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diff changeset
321 }
8ffbb48528ae Add certificate installation for windows
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diff changeset
322 }
8ffbb48528ae Add certificate installation for windows
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diff changeset
323
944
76c410aff382 Fix two "memory leaks"
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324 strv_free (all_valid_certs);
76c410aff382 Fix two "memory leaks"
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325
68
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diff changeset
326 #ifdef WIN32
302
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diff changeset
327 ret = write_stores_win (to_install, to_remove);
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diff changeset
328 if (ret != 0)
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parents: 299
diff changeset
329 {
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diff changeset
330 ERRORPRINTF ("Failed to write windows stores retval: %i\n", ret);
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parents: 299
diff changeset
331 }
68
8ffbb48528ae Add certificate installation for windows
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parents: 65
diff changeset
332 #endif
302
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parents: 299
diff changeset
333 ret = write_stores_nss (to_install, to_remove);
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parents: 299
diff changeset
334 if (ret != 0)
fac7e1b0e558 Add nss store calling function and use it in cinst
Andre Heinecke <andre.heinecke@intevation.de>
parents: 299
diff changeset
335 {
fac7e1b0e558 Add nss store calling function and use it in cinst
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parents: 299
diff changeset
336 ERRORPRINTF ("Failed to write nss stores");
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parents: 299
diff changeset
337 }
68
8ffbb48528ae Add certificate installation for windows
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parents: 65
diff changeset
338
163
8cfcd38a9bb3 Change coding style for cinst main / windowsstore to GNU
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parents: 161
diff changeset
339 /* Make valgrind happy */
8cfcd38a9bb3 Change coding style for cinst main / windowsstore to GNU
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parents: 161
diff changeset
340 strv_free (to_install);
8cfcd38a9bb3 Change coding style for cinst main / windowsstore to GNU
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parents: 161
diff changeset
341 strv_free (to_remove);
59
3f6378647371 Start work on cinst. Strhelp new helpers to work with C String
Andre Heinecke <aheinecke@intevation.de>
parents: 26
diff changeset
342
163
8cfcd38a9bb3 Change coding style for cinst main / windowsstore to GNU
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parents: 161
diff changeset
343 return 0;
25
92108a2120f1 Move certificatelist to common. Add cinst directory
Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
344 }

http://wald.intevation.org/projects/trustbridge/