+/*
+Copyright (c) 2013 Eugene Crosser
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product documentation
+ would be appreciated but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 3. This notice may not be removed or altered from any source
+ distribution.
+*/
+
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <unistd.h>
#include <errno.h>
+#include <stdarg.h>
#include "authobj.h"
-#if 0
+#include "authfile.h"
#include "pcsc_cr.h"
-#endif
-static void usage(const char const *cmd)
+static struct _auth_chunk
+token_key(const unsigned char *challenge, const int challengesize)
+{
+ struct _auth_chunk ho = {0};
+ long rc;
+ int keysize = sizeof(ho.data);
+
+ if ((rc = pcsc_cr(challenge, challengesize, ho.data, &keysize))) {
+ ho.err = pcsc_errstr(rc);
+ }
+ return ho;
+}
+
+static char *mynonce = NULL;
+
+static void update_nonce(char *nonce, const int nonsize)
+{
+ if (mynonce) {
+ snprintf(nonce, nonsize, "%s", mynonce);
+ } else {
+ int n = 0;
+
+ sscanf(nonce, "%d", &n);
+ snprintf(nonce, nonsize, "%d", n+1);
+ }
+}
+
+static void usage(const char * const cmd)
{
fprintf(stderr,
- "usage: %s [-f filename] {-s hexstring40 | -S file} [-u username] [-n nonce] [-l payload] [-p password]\n",
- cmd);
+ "usage: %s [options] [username]\n"
+ " -h - show this help and exit\n"
+ " -o backend-option - token option \"backend:key=val\"\n"
+ " -f template - template for auth state filepath\n"
+ " -a secret | -A file-with-secret | -A -\n"
+ " - 40-character hexadecimal secret\n"
+ " -s token-serial - public I.D. of the token\n"
+ " -n nonce - initial nonce\n"
+ " -l payload - keyring unlock password\n"
+ " -p password - login password\n"
+ " -v - show returned data\n"
+ , cmd);
}
int main(int argc, char *argv[])
{
+ struct _auth_obj ao;
int c;
- char *fn = NULL;
- FILE *fp;
+ int verbose = 0;
char *hsecret = NULL;
char *secfn = NULL;
char secbuf[43];
- unsigned char secret[20];
+ unsigned char bsecret[20];
+ unsigned char *secret = NULL;
int i;
- char *nonce = "1";
- char *id = getlogin();
- char *payload = "";
+ char *tokenid = NULL;
+ char *userid = getlogin();
+ char *payload = NULL;
char *password = "";
- int rc;
- unsigned char authobj[256];
- int authsize = sizeof(authobj);
- while ((c = getopt(argc, argv, "h"
-#if 0
- "o:"
-#endif
- "f:s:S:u:n:l:p:")) != -1) switch (c) {
+ while ((c = getopt(argc, argv, "ho:f:a:A:s:n:l:p:v")) != -1)
+ switch (c) {
case 'h':
usage(argv[0]);
exit(EXIT_SUCCESS);
-#if 0
case 'o':
if (pcsc_option(optarg)) {
- fprintf(stderr, "Option \"%s\" bad\n", optarg);
+ fprintf(stderr, "Option \"%s\" bad", optarg);
exit(EXIT_FAILURE);
}
break;
-#endif
case 'f':
- fn = optarg;
+ authfile_template(optarg);
break;
- case 's':
+ case 'a':
if (!secfn) {
hsecret = optarg;
} else {
- fprintf(stderr, "-s and -S are mutually exclusive\n");
+ fprintf(stderr, "-a and -A are mutually exclusive");
exit(EXIT_FAILURE);
}
break;
- case 'S':
+ case 'A':
if (!hsecret) {
secfn = optarg;
} else {
- fprintf(stderr, "-S and -s are mutually exclusive\n");
+ fprintf(stderr, "-A and -a are mutually exclusive");
exit(EXIT_FAILURE);
}
break;
- case 'u':
- id = optarg;
+ case 's':
+ tokenid = optarg;
break;
case 'n':
- nonce = optarg;
+ mynonce = optarg;
break;
case 'l':
payload = optarg;
case 'p':
password = optarg;
break;
+ case 'v':
+ verbose = 1;
+ break;
default:
usage(argv[0]);
exit(EXIT_FAILURE);
}
- if (optind == (argc - 1) && !secfn && !hsecret) {
- hsecret = argv[optind];
+ if (optind == (argc - 1)) {
+ userid = argv[optind];
optind++;
}
if (optind != argc) {
usage(argv[0]);
exit(EXIT_FAILURE);
}
+ if (!userid) {
+ fprintf(stderr, "cannot determine userid");
+ exit(EXIT_FAILURE);
+ }
if (secfn) {
FILE *sfp;
char *p;
if (!strcmp(secfn, "-")) sfp = stdin;
else sfp = fopen(secfn, "r");
if (!sfp) {
- fprintf(stderr, "cannot open \"%s\": %s\n",
+ fprintf(stderr, "cannot open \"%s\": %s",
secfn, strerror(errno));
exit(EXIT_FAILURE);
}
if (!fgets(secbuf, sizeof(secbuf), sfp)) {
- fprintf(stderr, "cannot read \"%s\": %s\n",
+ fprintf(stderr, "cannot read \"%s\": %s",
secfn, strerror(errno));
exit(EXIT_FAILURE);
}
fclose(sfp);
hsecret = secbuf;
}
- if (!hsecret) {
- fprintf(stderr, "secret missing, specify -s or -S\n");
- exit(EXIT_FAILURE);
- }
- if (strlen(hsecret) != 40) {
- fprintf(stderr, "secret wrong, must be exactly 40 chars\n");
- exit(EXIT_FAILURE);
- }
- for (i = 0; i < 20; i++)
- if (sscanf(hsecret + i * 2, "%2hhx", &secret[i]) != 1) {
- fprintf(stderr, "secret wrong, must be hexadecimal\n");
- exit(EXIT_FAILURE);
- }
- if (!id) {
- fprintf(stderr, "cannot determine userid\n");
- exit(EXIT_FAILURE);
- }
- rc = make_authobj(id, password, nonce, secret, sizeof(secret),
- (unsigned char *)payload, strlen(payload),
- authobj, &authsize);
- if (rc) {
- fprintf(stderr, "error %d\n", rc);
- exit(EXIT_FAILURE);
- }
- fp = fopen(fn, "w");
- if (!fp) {
- fprintf(stderr, "cannot open \"%s\": %s\n",
- fn, strerror(errno));
- exit(EXIT_FAILURE);
- }
- if (fprintf(fp, "%s:%s:%s:", "", id, nonce) < 0) {
- fprintf(stderr, "cannot write to \"%s\": %s\n",
- fn, strerror(errno));
- exit(EXIT_FAILURE);
- }
- for (i = 0; i < authsize; i++)
- if (fprintf(fp, "%02x", authobj[i]) < 0) {
- fprintf(stderr, "cannot write to \"%s\": %s\n",
- fn, strerror(errno));
- exit(EXIT_FAILURE);
+ if (hsecret) {
+ if (strlen(hsecret) != 40) {
+ fprintf(stderr,
+ "secret wrong, must be exactly 40 chars\n");
+ exit(EXIT_FAILURE);
+ }
+ if (strspn(hsecret, "0123456789abcdefABCDEF") != 40) {
+ fprintf(stderr,
+ "secret wrong, must be hexadecimal string\n");
+ exit(EXIT_FAILURE);
+ }
+ for (i = 0; i < 20; i++)
+ sscanf(hsecret + i * 2, "%2hhx", &bsecret[i]);
+ secret = bsecret;
}
- fprintf(fp, "\n");
- if (fclose(fp) < 0) {
- fprintf(stderr, "cannot close \"%s\": %s\n",
- fn, strerror(errno));
+ ao = authfile(tokenid, userid, password, update_nonce,
+ secret, secret ? sizeof(bsecret) : 0,
+ (unsigned char *)payload, payload ? strlen(payload) : 0,
+ token_key);
+ memset(bsecret, 0, sizeof(bsecret));
+ if (ao.err) {
+ fprintf(stderr, "%s\n", ao.err);
exit(EXIT_FAILURE);
+ } else if (verbose) {
+ printf("userid : \"%.*s\"\n", ao.datasize, ao.data);
+ printf("payload: \"%.*s\"\n", ao.paylsize, ao.payload);
}
+ if (ao.buffer) free(ao.buffer);
return 0;
}
projects / pam_pcsc_cr.git / blobdiff