2 smbta-util: tool for controlling encryption with
3 vfs_smb_traffic_analyzer
4 Copyright (C) 2010 Holger Hetterich <hhetter@novell.com>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 static void delete_key(void);
25 static void help(void)
27 printf("-h print this help message.\n");
28 printf("-f <file> install the key from a file and activate\n");
29 printf(" encryption.\n");
30 printf("-g <file> generate a key, save it to a file, and activate encryption.\n");
31 printf("-u uninstall a key, and deactivate encryption.\n");
32 printf("-c <file> create a file from an installed key.\n");
33 printf("-s check if a key is installed, and print the key to stdout.\n");
37 static void check_key(void)
40 if (!secrets_init()) {
41 printf("Error opening secrets database.");
44 akey = (char *) secrets_fetch("smb_traffic_analyzer_key", &size);
46 printf("A key is installed: %s\n",akey);
47 printf("Encryption activated.\n");
50 } else printf("No key is installed.\n");
54 static void create_keyfile(char *filename, char *key)
57 keyfile = fopen(filename, "w");
58 if (keyfile == NULL) {
59 printf("error creating the keyfile!\n");
62 fprintf(keyfile, "%s", key);
64 printf("File '%s' has been created.\n", filename);
68 * Load a key from a file. The caller has to free the
71 static void load_key_from_file(char *filename, char *key)
75 keyfile = fopen(filename, "r");
76 if (keyfile == NULL) {
77 printf("Error opening the keyfile!\n");
80 l = fscanf(keyfile, "%s", key);
81 if (l != 1 || strlen(key) != 16) {
82 printf("Key file in wrong format\n");
89 static void create_file_from_key(char *filename)
92 char *akey = (char *) secrets_fetch("smb_traffic_analyzer_key", &size);
94 printf("No key is installed! Can't create file.\n");
97 create_keyfile(filename, akey);
102 * Generate a random key. The user has to free the returned
105 static void generate_key(char *key)
108 srand( (unsigned)time( NULL ) );
109 for ( f = 0; f < 16; f++) {
110 *(key+f) = (rand() % 128) +32;
113 printf("Random key generated.\n");
116 static void create_new_key_and_activate( char *filename )
120 if (!secrets_init()) {
121 printf("Error opening secrets database.");
127 secrets_store("smb_traffic_analyzer_key", key, strlen(key)+1 );
128 printf("Key installed, encryption activated.\n");
129 create_file_from_key(filename);
132 static void delete_key(void)
135 char *akey = (char *) secrets_fetch("smb_traffic_analyzer_key", &size);
138 secrets_delete("smb_traffic_analyzer_key");
139 printf("Removed installed key. Encryption deactivated.\n");
141 printf("No key is installed.\n");
146 static void load_key_from_file_and_activate( char *filename)
151 load_key_from_file(filename, key);
152 printf("Loaded key from %s.\n",filename);
153 akey = (char *) secrets_fetch("smb_traffic_analyzer_key", &size);
155 printf("Removing the old key.\n");
159 printf("Installing the key from file %s\n",filename);
160 secrets_store("smb_traffic_analyzer_key", key, strlen(key)+1);
163 static void process_arguments(int argc, char **argv)
166 while ((co = getopt(argc, argv, "hf:g:uc:s")) != EOF) {
175 create_new_key_and_activate(optarg);
181 create_file_from_key(optarg);
184 load_key_from_file_and_activate(optarg);
193 int main(int argc, char **argv)
198 if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
199 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
200 get_dyn_CONFIGFILE());
209 process_arguments(argc, argv);