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/*
* Copyright (C) 2001 Nikos Mavroyanopoulos
*
* This file is part of GNUTLS.
*
* GNUTLS is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNUTLS is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "../lib/gnutls.h"
#include "gaa.h"
int verify_passwd(char *file, char* username, char* passwd) {
FILE* fd;
char line[513];
int i;
fd = fopen( file, "r");
if (fd==NULL) {
fprintf(stderr, "Cannot open file '%s'\n", file);
return -1;
}
while( fgets( line, sizeof(line), fd) != NULL) {
/* move to first ':' */
i=0;
while( (line[i]!=':') && (line[i]!='\0') && (i < sizeof(line)) ) {
i++;
}
if (strncmp( username, line, i) == 0) {
if (gnutls_crypt_vrfy( username, passwd, &line[++i]) == 0) {
fprintf(stderr, "Password verified\n");
} else {
fprintf(stderr, "Password does NOT match\n");
}
return 0;
}
}
fclose(fd);
return -1;
}
int main(int argc, char** argv) {
gaainfo info;
char* passwd;
char* cr=NULL;
int crypt, salt;
if ( gaa(argc, argv, &info) != -1) {
fprintf(stderr, "Error in the arguments.\n");
return -1;
}
salt = info.salt;
if(info.crypt==NULL) crypt = SRPSHA1_CRYPT;
else {
if (strcasecmp( info.crypt, "bcrypt")==0) {
crypt = BLOWFISH_CRYPT;
if (salt==0) salt = 6; /* cost is 6 */
}
else if (strcasecmp( info.crypt, "srpsha")==0) {
crypt = SRPSHA1_CRYPT;
if (salt==0) salt = 16; /* 16 bytes salt */
}
else {
fprintf(stderr, "Unknown algorithm\n");
return -1;
}
}
passwd = getpass("Enter password: ");
if (info.passwd != NULL) {
verify_passwd( info.passwd, info.username, passwd);
free(cr);
return 0;
}
cr = gnutls_crypt( info.username, passwd, crypt, salt);
printf("%s:%s\n", info.username, cr);
free(cr);
return 0;
}
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