1 /******************************************************************************/
2 /* postlicyd: a postfix policy daemon with a lot of features */
4 /* ________________________________________________________________________ */
6 /* Redistribution and use in source and binary forms, with or without */
7 /* modification, are permitted provided that the following conditions */
10 /* 1. Redistributions of source code must retain the above copyright */
11 /* notice, this list of conditions and the following disclaimer. */
12 /* 2. Redistributions in binary form must reproduce the above copyright */
13 /* notice, this list of conditions and the following disclaimer in the */
14 /* documentation and/or other materials provided with the distribution. */
15 /* 3. The names of its contributors may not be used to endorse or promote */
16 /* products derived from this software without specific prior written */
19 /* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND */
20 /* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE */
21 /* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
22 /* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS */
23 /* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR */
24 /* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF */
25 /* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS */
26 /* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
27 /* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) */
28 /* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF */
29 /* THE POSSIBILITY OF SUCH DAMAGE. */
30 /******************************************************************************/
33 * Copyright © 2005-2007 Pierre Habouzit
44 #define MAX_SIZE 0x10000
46 static char **read_sfile(char *sfile)
58 if (stat(sfile, &stat_buf)) {
63 if (stat_buf.st_size > MAX_SIZE) {
64 fprintf(stderr, "the secret file is too big\n");
68 buf = p_new(char, stat_buf.st_size + 1);
70 if ((fd = open(sfile, O_RDONLY)) < 0) {
76 if ((nb = read(fd, &(buf[pos]), stat_buf.st_size)) < 0) {
83 if (nb == 0 || pos == stat_buf.st_size) {
90 for (nb = pos = 0; pos < stat_buf.st_size ; pos++) {
91 if (buf[pos] == '\n') {
97 res = p_new(char*, nb + 2);
100 while (pos < stat_buf.st_size) {
101 len = strlen(&(buf[pos]));
103 res[nb++] = &(buf[pos]);
112 static char *encode(char *secret, char *sender, char *alias)
116 srs_t *srs = srs_new();
118 srs_add_secret(srs, secret);
119 err = srs_forward_alloc(srs, &res, sender, alias);
122 fprintf(stderr, "%s\n", srs_strerror(err));
129 static char *decode(char **secrets, char *sender)
133 srs_t *srs = srs_new();
136 srs_add_secret(srs, *secrets++);
139 err = srs_reverse_alloc(srs, &res, sender);
142 fprintf(stderr, "%s\n", srs_strerror(err));
149 static void help(void)
152 "Usage: srs-c [ -r | -d domain ] -f sfile -e sender\n"
153 "Perform an SRS encoding / decoding\n"
155 " -r perform an SRS decoding\n"
156 " -d domain use that domain (required for encoding)\n"
158 " -f sfile secret file for decoding. the first line is taken if -s omitted\n"
160 " -e sender the sender address we want to encode/decode\n"
165 int main(int argc, char *argv[])
176 while ((opt = getopt(argc, argv, "d:e:f:r")) != -1) {
178 case 'd': domain = optarg; break;
179 case 'e': sender = optarg; break;
180 case 'f': sfile = optarg; break;
181 case 'r': rev = true; break;
185 if (!sender || !sfile || !(rev||domain)) {
190 secr = read_sfile(sfile);
191 if (!secr || !secr[0]) {
192 fprintf(stderr, "No secret given, and secret file is empty\n");
198 buf = decode(secr, sender);
200 buf = encode(secr[0], sender, domain);