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annotate cinst/main.c @ 116:c602d8cfa619

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Refactoring: unified naming of string vector functions.
author Sascha Wilde <wilde@intevation.de>
date Fri, 21 Mar 2014 17:42:00 +0100
parents 80ab2168760f
children 24fb90ef8f6a
rev   line source
25
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1 /** @brief Main entry point for the cinst process.
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2 *
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3 * The cinst process may or may not be run with elevated
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4 * privileges. When run with elevated privileges this
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5 * process will modify system wide certificate stores.
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6 * Otherwise only the users certificate stores are modified.
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7 *
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8 * It expects a certificatelist on stdin enclosed in a
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9 * -----BEGIN CERTIFICATE LIST-----
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10 * ...
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11 * -----END CERTIFICATE LIST-----
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12 *
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13 * Followed by additional instruction lines of:
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14 * I:<certificate>
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15 * R:<certificate>
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16 *
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17 * It will only execute the instructions if the
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18 * I and R instructions are also part of the signed
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19 * certificate list. The signature is validated with the
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20 * built in key.
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21 *
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22 * The special instruction "UNINSTALL" will cause the installer
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23 * to remove all certificates (Even those marked with I) that
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24 * are part of the list to be removed.
25
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25 *
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26 **/
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27 #include <stdio.h>
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28 #include <stdlib.h>
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29 #include <string.h>
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30 #include <assert.h>
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31
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32 #include <polarssl/base64.h>
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33
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34 #include "strhelp.h"
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35 #include "listutil.h"
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36 #include "errorcodes.h"
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37
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38 #ifdef WIN32
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39 #include <windows.h>
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40 #include <wincrypt.h>
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41 #endif
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42
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43 /* The certificate list + instructions may only be so long as
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44 * twice the accepted certificatelist size */
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45 #define MAX_INPUT_SIZE MAX_LINE_LENGTH * MAX_LINES * 2
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46
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47 /* @brief Read stdin into data structures.
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48 *
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49 * Reads from stdin and sorts the input into the respective
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50 * variables. The pointers returned need to be freed by the caller.
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51 * Terminates in OOM conditions.
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52 *
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53 * The caller needs to free the memory allocated by this function
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54 * even when an error is returned.
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55 *
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56 * @returns: 0 on success. An error code otherwise.
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57 */
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58 int readInput(char **certificate_list, char ***to_install,
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59 char ***to_remove)
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60 {
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61 int lines_read = 0;
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62 int readingList = 0;
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63 size_t list_size = 0;
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64 char buf[MAX_LINE_LENGTH + 1];
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65
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66 if (*certificate_list || *to_install || *to_remove) {
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67 printf("Error invalid parameters\n");
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68 return -1;
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69 }
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70
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71 while (fgets(buf, MAX_LINE_LENGTH + 1, stdin)) {
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72 size_t len = strlen(buf); /* fgets ensures buf is terminated */
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73 if (len < 2) {
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74 printf("Line to short.\n");
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75 return ERR_INVALID_INPUT;
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76 }
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77 if (lines_read ++ > MAX_LINES) {
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78 printf("Too many lines\n");
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79 return ERR_TOO_MUCH_INPUT;
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80 }
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81 if (strcmp("-----BEGIN CERTIFICATE LIST-----\r\n", buf) == 0){
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82 readingList = 1;
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83 continue;
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84 }
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85 if (strcmp("-----END CERTIFICATE LIST-----\r\n", buf) == 0){
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86 readingList = 0;
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87 continue;
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88 }
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89 if (readingList) {
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90 str_append_str(certificate_list, &list_size, buf, len);
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91 continue;
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92 }
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93 if (*buf == 'I') {
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94 /* Remove leading I: and trailing \r\n */
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95 strv_append(to_install, buf+2, len - 4);
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96 continue;
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97 }
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98 if (*buf == 'R') {
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99 /* Remove leading R: and trailing \r\n */
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100 strv_append(to_remove, buf+2, len - 4);
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101 continue;
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102 }
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103 if (strcmp("UNINSTALL", buf) == 0) {
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104 /* Remove trailing \r\n */
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105 strv_append(to_remove, buf, len - 2);
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106 }
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107 }
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108
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109 return 0;
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110 }
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111 /*
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112 int validate_instructions(const char *certificate_list,
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113 const size_t list_len,
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114 const char **to_install,
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115 const char **to_remove)
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116 {
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117 TODO
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118 (void *) certificate_list;
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119 (void **) to_install;
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120 (void **) to_remove;
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121 (void) list_len;
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122
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123 return 0;
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124 }
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125 */
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126
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127 #ifdef WIN32
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128 /** @brief Install certificates into Windows store
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129 *
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130 * @param [in] to_install NULL terminated array of base64 encoded certificates.
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131 * @param [in] user_store set to True if the certificates shoudl be installed
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132 * only for the current user. O for system wide installation.
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133 * @returns 0 on success an errorcode otherwise.
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134 */
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135 int install_certificates_win(const char **to_install, int user_store)
8ffbb48528ae Add certificate installation for windows
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diff changeset
136 {
8ffbb48528ae Add certificate installation for windows
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diff changeset
137 int i = 0;
8ffbb48528ae Add certificate installation for windows
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diff changeset
138 HCERTSTORE hStore = NULL;
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parents: 65
diff changeset
139
8ffbb48528ae Add certificate installation for windows
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diff changeset
140 if (!user_store) {
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parents: 65
diff changeset
141 // Access user store
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
142 hStore = CertOpenStore(CERT_STORE_PROV_SYSTEM, 0,
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parents: 65
diff changeset
143 0, CERT_SYSTEM_STORE_CURRENT_USER, L"Root");
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Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
144 } else {
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diff changeset
145 // Access machine store
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Andre Heinecke <aheinecke@intevation.de>
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diff changeset
146 hStore = CertOpenStore(CERT_STORE_PROV_SYSTEM, 0,
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diff changeset
147 0, CERT_SYSTEM_STORE_LOCAL_MACHINE, L"Root");
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diff changeset
148 }
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parents: 65
diff changeset
149
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diff changeset
150 if (!hStore) {
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parents: 65
diff changeset
151 return ERR_STORE_ACCESS_DENIED;
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parents: 65
diff changeset
152 }
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parents: 65
diff changeset
153
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diff changeset
154 while (to_install[i]) {
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diff changeset
155 size_t needed_len = 0;
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diff changeset
156 size_t cert_len = strnlen(to_install[i], MAX_LINE_LENGTH);
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157 int ret = -1;
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158 unsigned char *buf;
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diff changeset
159 /* Check the needed size for the buffer */
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diff changeset
160 ret = base64_decode(NULL, &needed_len,
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diff changeset
161 (unsigned char *)to_install[i], cert_len);
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parents: 65
diff changeset
162
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diff changeset
163 if (ret != 0 && ret != POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL) {
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164 return ERR_INVALID_INSTRUCTIONS;
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diff changeset
165 }
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parents: 65
diff changeset
166
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diff changeset
167 buf = xmalloc(needed_len);
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168 memset (buf, 0, needed_len);
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169
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170 ret = base64_decode(buf, &needed_len,
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171 (unsigned char *)to_install[i], cert_len);
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parents: 65
diff changeset
172
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diff changeset
173 if (ret != 0) {
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diff changeset
174 return ERR_INVALID_INSTRUCTIONS;
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diff changeset
175 }
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parents: 65
diff changeset
176
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diff changeset
177 ret = CertAddEncodedCTLToStore (hStore,
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diff changeset
178 X509_ASN_ENCODING,
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diff changeset
179 (PBYTE)buf,
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180 needed_len,
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181 CERT_STORE_ADD_ALWAYS,
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diff changeset
182 NULL);
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diff changeset
183
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diff changeset
184 if (ret != 0) {
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185 printf("Failed to add certificate\n");
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diff changeset
186 free(buf);
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187 return ret;
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diff changeset
188 }
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diff changeset
189 free(buf);
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diff changeset
190 }
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diff changeset
191 if(hStore) {
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diff changeset
192 CertCloseStore(hStore, 0);
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193 }
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diff changeset
194 return 0;
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diff changeset
195 }
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196 #endif
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197
26
cbd57d767dfa Move layout around. Restructure CMakeLists
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198 int main() {
59
3f6378647371 Start work on cinst. Strhelp new helpers to work with C String
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199 char **to_install = NULL;
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200 char **to_remove = NULL;
64
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
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201 char *certificate_list = NULL;
65
e4088afd5281 Comment out validate instructions for now to avoid unused warnings
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diff changeset
202 size_t list_len = 0;
59
3f6378647371 Start work on cinst. Strhelp new helpers to work with C String
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diff changeset
203 int ret = -1;
68
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diff changeset
204 /*
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205 i = 0 ,
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206 uninstall = 0;
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207 */
64
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
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diff changeset
208 ret = readInput(&certificate_list, &to_install, &to_remove);
60
6acb1dae6185 Use strn functions and improve error handling.
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
209
6acb1dae6185 Use strn functions and improve error handling.
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
210 if (ret != 0) {
6acb1dae6185 Use strn functions and improve error handling.
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
211 return ret;
6acb1dae6185 Use strn functions and improve error handling.
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
212 }
6acb1dae6185 Use strn functions and improve error handling.
Andre Heinecke <aheinecke@intevation.de>
parents: 59
diff changeset
213
64
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
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parents: 60
diff changeset
214 if (!certificate_list) {
60
6acb1dae6185 Use strn functions and improve error handling.
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
215 return ERR_INVALID_INPUT_NO_LIST;
6acb1dae6185 Use strn functions and improve error handling.
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
216 }
59
3f6378647371 Start work on cinst. Strhelp new helpers to work with C String
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parents: 26
diff changeset
217
65
e4088afd5281 Comment out validate instructions for now to avoid unused warnings
Andre Heinecke <aheinecke@intevation.de>
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diff changeset
218 list_len = strnlen(certificate_list, MAX_INPUT_SIZE);
59
3f6378647371 Start work on cinst. Strhelp new helpers to work with C String
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parents: 26
diff changeset
219
65
e4088afd5281 Comment out validate instructions for now to avoid unused warnings
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diff changeset
220 ret = verify_list(certificate_list, list_len);
64
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
221
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
222 if (ret != 0) {
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
223 return ERR_INVALID_SIGNATURE;
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
224 }
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
225
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
226 if (!strv_length(to_install) && !strv_length(to_remove)) {
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
227 return ERR_NO_INSTRUCTIONS;
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
228 }
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
229
68
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
230
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
231 /* Check that the instructions are ok to execute
65
e4088afd5281 Comment out validate instructions for now to avoid unused warnings
Andre Heinecke <aheinecke@intevation.de>
parents: 64
diff changeset
232 ret = validate_instructions(certificate_list, list_len, to_install,
e4088afd5281 Comment out validate instructions for now to avoid unused warnings
Andre Heinecke <aheinecke@intevation.de>
parents: 64
diff changeset
233 to_remove);
64
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
234 if (ret != 0) {
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
235 return ERR_INVALID_INSTRUCTIONS;
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
236 }
68
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
237
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
238 if (to_remove) {
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
239 for (i=0; to_remove[i]; i++) {
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
240 if (strncmp("UNINSTALL", to_remove[i], MAX_LINE_LENGTH)) {
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
241 uninstall = 1;
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
242 break;
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
243 }
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
244 }
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
245 }
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
246
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
247 if (uninstall) {
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
248
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
249 }
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
250 */
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
251
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
252 #ifdef WIN32
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
253 install_certificates_win((const char**) to_install, 1);
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
254 //remove_certificates_win((const char**) to_remove, 1);
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
255 #endif
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
256
64
fb9f78f7ab2f Improve error handling free memory before exiting. Include line endings in Marker lines
Andre Heinecke <aheinecke@intevation.de>
parents: 60
diff changeset
257 /* Make valgrind happy */
116
c602d8cfa619 Refactoring: unified naming of string vector functions.
Sascha Wilde <wilde@intevation.de>
parents: 91
diff changeset
258 strv_free(to_install);
c602d8cfa619 Refactoring: unified naming of string vector functions.
Sascha Wilde <wilde@intevation.de>
parents: 91
diff changeset
259 strv_free(to_remove);
68
8ffbb48528ae Add certificate installation for windows
Andre Heinecke <aheinecke@intevation.de>
parents: 65
diff changeset
260 free(certificate_list);
59
3f6378647371 Start work on cinst. Strhelp new helpers to work with C String
Andre Heinecke <aheinecke@intevation.de>
parents: 26
diff changeset
261
25
92108a2120f1 Move certificatelist to common. Add cinst directory
Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
262 return 0;
92108a2120f1 Move certificatelist to common. Add cinst directory
Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
263 }
http://wald.intevation.org/projects/trustbridge/