DeforaNetworks/fwknop
DeforaNetworks/fwknop
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Forgot to add the server dir.

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git-svn-id: file:///home/mbr/svn/fwknop/trunk@128 510a4753-2344-4c79-9c09-4d669213fbeb
This commit is contained in:
Damien Stuart 2009-08-09 15:45:45 +00:00
parent 53b7fae8bb
commit 5b3f6f07da
8 changed files with 626 additions and 0 deletions
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7
server/Makefile.am Normal file
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sbin_PROGRAMS = fwknopd
fwknopd_SOURCES = fwknopd.c fwknopd.h config_init.c config_init.h \
fwknopd_common.h utils.c utils.h
fwknopd_LDADD = $(top_builddir)/lib/libfko.la
fwknopd_CPPFLAGS = -I $(top_srcdir)/lib -I $(top_srcdir)/common

221
server/config_init.c Normal file
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/*
******************************************************************************
*
* File: config_init.c
*
* Author: Damien Stuart
*
* Purpose: Command-line and config file processing for fwknop server.
*
* Copyright (C) 2009 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This program 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 "fwknopd_common.h"
#include "config_init.h"
#include "getopt.h"
#include "utils.h"
#include "ctype.h"
/* Routine to extract the configuration value from a line in the config
* file.
*/
int
get_char_val(const char *var_name, char *dest, char *lptr)
{
int i, var_char_ctr = 0;
char *tmp_ptr;
tmp_ptr = lptr;
/* var_name is guaranteed to be NULL-terminated.
*/
for (i=0; i < (int)strlen(var_name); i++)
if (tmp_ptr[i] != var_name[i])
return 0;
tmp_ptr += i;
/* First char after varName better be a space or tab or '='.
*/
if (*tmp_ptr != ' ' && *tmp_ptr != '\t' && *tmp_ptr != '=')
return 0;
/* Walk past the delimiter.
*/
while (*tmp_ptr == ' ' || *tmp_ptr == '\t' || *tmp_ptr == '=')
tmp_ptr++;
while (var_char_ctr < MAX_LINE_LEN && tmp_ptr[var_char_ctr] != '\n'
&& tmp_ptr[var_char_ctr] != '\0')
var_char_ctr++;
if (tmp_ptr[var_char_ctr] != '\n' || var_char_ctr >= MAX_LINE_LEN)
return 0;
strncpy(dest, tmp_ptr, var_char_ctr);
dest[var_char_ctr] = '\0';
return 1;
}
/* Parse the config file...
static void
parse_config_file(fko_svr_options_t *options, opts_track_t *ot)
{
FILE *cfile_ptr;
unsigned int numLines = 0;
char conf_line_buf[MAX_LINE_LEN] = {0};
char tmp_char_buf[MAX_LINE_LEN] = {0};
char *lptr;
struct stat st;
* First see if the config file exists. If it doesn't, and was
* specified via command-line, then error out. Otherwise, complain
* and go on with program defaults.
*
if(stat(options->config_file, &st) != 0)
{
if(ot->got_config_file)
{
fprintf(stderr, "[*] Could not open config file: %s\n",
options->config_file);
exit(EXIT_FAILURE);
}
fprintf(stderr,
"** Config file was not found. Attempting to continue with defaults...\n"
);
return;
}
if ((cfile_ptr = fopen(options->config_file, "r")) == NULL)
{
fprintf(stderr, "[*] Could not open config file: %s\n",
options->config_file);
exit(EXIT_FAILURE);
}
while ((fgets(conf_line_buf, MAX_LINE_LEN, cfile_ptr)) != NULL)
{
numLines++;
conf_line_buf[MAX_LINE_LEN-1] = '\0';
lptr = conf_line_buf;
memset(tmp_char_buf, 0x0, MAX_LINE_LEN);
while (*lptr == ' ' || *lptr == '\t' || *lptr == '=')
lptr++;
* Get past comments and empty lines.
*
if (*lptr == '#' || *lptr == '\n' || *lptr == '\r' || *lptr == '\0' || *lptr == ';')
continue;
}
fclose(cfile_ptr);
return;
}
*/
/* Sanity and bounds checks for the various options.
*/
static void
validate_options(fko_srv_options_t *options)
{
/*** TODO: put stuff here ***/
return;
}
/* Initialize program configuration via config file and/or command-line
* switches.
*/
void
config_init(fko_srv_options_t *options, int argc, char **argv)
{
int cmd_arg, index;
struct opts_track ot;
/* Zero out options and opts_track.
*/
memset(options, 0x00, sizeof(fko_srv_options_t));
memset(&ot, 0x00, sizeof(ot));
/* Establish a few defaults such as UDP/62201 for sending the SPA
* packet (can be changed with --server-proto/--server-port)
*/
while ((cmd_arg = getopt_long(argc, argv,
"hvV", cmd_opts, &index)) != -1) {
switch(cmd_arg) {
case 'h':
usage();
exit(EXIT_SUCCESS);
break;
case 'v':
options->verbose = 1;
break;
case 'V':
options->version = 1;
break;
case GPG_HOME_DIR:
strlcpy(options->gpg_home_dir, optarg, MAX_PATH_LEN);
break;
default:
usage();
exit(EXIT_FAILURE);
}
}
/* Parse configuration file to populate any params not already specified
* via command-line options
*/
//--DSS XXX: We will use this when we have a config file to use.
//parse_config_file(options, &ot);
/* Now that we have all of our options set, we can validate them.
*/
validate_options(options);
return;
}
/* Print usage message...
*/
void
usage(void)
{
fprintf(stderr, "\n%s server version %s\n%s\n\n", MY_NAME, MY_VERSION, MY_DESC);
fprintf(stderr,
"Usage: fwknopd [options]\n\n"
" -h, --help - Print this usage message and exit.\n"
" -c, --config-file - Specify an alternate configuration file.\n"
" -v, --verbose - Set verbose mode.\n"
" -V, --version - Print version number.\n"
" --gpg-home-dir - Specify the GPG home directory.\n"
"\n"
);
return;
}
/***EOF***/

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server/config_init.h Normal file
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/*
******************************************************************************
*
* File: fwknop.h
*
* Author: Damien Stuart
*
* Purpose: Header file for fwknopd config_init.
*
* Copyright (C) 2009 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This program 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
*
******************************************************************************
*/
#ifndef CONFIG_INIT_H
#define CONFIG_INIT_H
#include <getopt.h>
#include <sys/stat.h>
/* Long options values (for those without a short option).
*/
enum {
GPG_HOME_DIR = 0x200,
NOOP /* Just to be a marker for the end */
};
/* Our program command-line options...
*/
static struct option cmd_opts[] =
{
{"gpg-home-dir", 1, NULL, GPG_HOME_DIR },
{"help", 0, NULL, 'h'},
{"verbose", 0, NULL, 'v'},
{"version", 0, NULL, 'V'},
{0, 0, 0, 0}
};
/* Track config options set via command-line.
* --DSS: XXX: These will need to be reviewed...
*/
typedef struct opts_track {
unsigned int got_server_port:1;
} opts_track_t;
/* Function Prototypes
*/
void config_init(fko_srv_options_t *options, int argc, char **argv);
void usage(void);
#endif /* CONFIG_INIT_H */
/***EOF***/

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server/fwknopd.c Normal file
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/* $Id$
*****************************************************************************
*
* File: fwknopd.c
*
* Author: Damien S. Stuart
*
* Purpose: An implementation of an fwknop server.
*
* Copyright (C) 2009 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This program 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 "fwknopd.h"
#include "config_init.h"
#include "utils.h"
/* prototypes
*/
static void display_ctx(fko_ctx_t ctx);
void errmsg(char *msg, int err);
int
main(int argc, char **argv)
{
fko_ctx_t ctx;
int res;
char *spa_data, *version;
char access_buf[MAX_LINE_LEN];
fko_srv_options_t options;
/* Handle command line
*/
config_init(&options, argc, argv);
/* Display version info and exit.
*/
if (options.version) {
fko_get_version(ctx, &version);
fprintf(stdout, "[+] fwknopd server %s\n", MY_VERSION);
return(0);
}
return(0);
}
/* Display an FKO error message.
*/
void
errmsg(char *msg, int err) {
fprintf(stderr, "[*] %s: %s: Error %i - %s\n",
MY_NAME, msg, err, fko_errstr(err));
}
/* Show the fields of the FKO context.
*/
static void
display_ctx(fko_ctx_t ctx)
{
char *rand_val = NULL;
char *username = NULL;
char *version = NULL;
char *spa_message = NULL;
char *nat_access = NULL;
char *server_auth = NULL;
char *enc_data = NULL;
char *spa_digest = NULL;
char *spa_data = NULL;
time_t timestamp = 0;
short msg_type = -1;
short digest_type = -1;
int client_timeout = -1;
/* Should be checking return values, but this is temp code. --DSS
*/
fko_get_rand_value(ctx, &rand_val);
fko_get_username(ctx, &username);
fko_get_timestamp(ctx, &timestamp);
fko_get_version(ctx, &version);
fko_get_spa_message_type(ctx, &msg_type);
fko_get_spa_message(ctx, &spa_message);
fko_get_spa_nat_access(ctx, &nat_access);
fko_get_spa_server_auth(ctx, &server_auth);
fko_get_spa_client_timeout(ctx, &client_timeout);
fko_get_spa_digest_type(ctx, &digest_type);
fko_get_encoded_data(ctx, &enc_data);
fko_get_spa_digest(ctx, &spa_digest);
fko_get_spa_data(ctx, &spa_data);
printf("\nFKO Field Values:\n=================\n\n");
printf(" Random Value: %s\n", rand_val == NULL ? "<NULL>" : rand_val);
printf(" Username: %s\n", username == NULL ? "<NULL>" : username);
printf(" Timestamp: %u\n", (unsigned int) timestamp);
printf(" FKO Version: %s\n", version == NULL ? "<NULL>" : version);
printf(" Message Type: %i\n", msg_type);
printf(" Message String: %s\n", spa_message == NULL ? "<NULL>" : spa_message);
printf(" Nat Access: %s\n", nat_access == NULL ? "<NULL>" : nat_access);
printf(" Server Auth: %s\n", server_auth == NULL ? "<NULL>" : server_auth);
printf(" Client Timeout: %u\n", client_timeout);
printf(" Digest Type: %u\n", digest_type);
printf("\n Encoded Data: %s\n", enc_data == NULL ? "<NULL>" : enc_data);
printf("\nSPA Data Digest: %s\n", spa_digest == NULL ? "<NULL>" : spa_digest);
printf("\nFinal Packed/Encrypted/Encoded Data:\n\n%s\n\n", spa_data);
}
/***EOF***/

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/* $Id: fwknop.h 95 2009-06-07 16:55:22Z dstuart $
*****************************************************************************
*
* File: fwknopd.h
*
* Author: Damien S. Stuart (dstuart@dstuart.org)
* Michael Rash (mbr@cipherdyne.org)
*
* Purpose: Header file for fwknopd server program.
*
* Copyright (C) 2009 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This program 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
*
*****************************************************************************
*/
#ifndef FWKNOPD_H
#define FWKNOPD_H
#include "fwknopd_common.h"
/* Used by the get_user_pw function.
*/
#define CRYPT_OP_ENCRYPT 1
#define CRYPT_OP_DECRYPT 2
#endif /* FWKNOPD_H */

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server/fwknopd_common.h Normal file
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/*
******************************************************************************
*
* File: fwknopd_common.h
*
* Author: Damien Stuart
*
* Purpose: Header file for fwknopd source files.
*
* Copyright (C) 2009 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This program 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
*
******************************************************************************
*/
#ifndef FWKNOPD_COMMON_H
#define FWKNOPD_COMMON_H
#include "common.h"
/* My Name and Version
*/
#define MY_NAME "fwknopd"
#define MY_DESC "Single Packet Authorization server"
/* Get our program version from VERSION (defined in config.h).
*/
#define MY_VERSION VERSION
/* Default config path, can override with -c
*/
#define DEF_CONFIG_FILE MY_NAME".conf"
/* fwknopd server configuration parameters and values
*/
typedef struct fko_srv_options
{
char config_file[MAX_PATH_LEN];
char gpg_home_dir[MAX_PATH_LEN];
/* Various command-line flags */
unsigned char verbose; /* --verbose mode */
unsigned char version; /* --version */
unsigned char test;
int fw_timeout;
//char config_file[MAX_PATH_LEN];
} fko_srv_options_t;
extern fko_srv_options_t options;
#endif /* FWKNOPD_COMMON_H */
/***EOF***/

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/* $Id: utils.c 63 2009-02-12 05:05:40Z mbr $
*****************************************************************************
*
* File: utils.c
*
* Author: Damien S. Stuart
*
* Purpose: General/Generic functions for the fwknop server.
*
* Copyright (C) 2009 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This program 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 "utils.h"
/* Generic hex dump function.
*/
void
hex_dump(unsigned char *data, int size)
{
int ln, i, j = 0;
char ascii_str[17] = {0};
for(i=0; i<size; i++)
{
if((i % 16) == 0)
{
printf(" %s\n 0x%.4x: ", ascii_str, i);
memset(ascii_str, 0x0, 17);
j = 0;
}
printf("%.2x ", data[i]);
ascii_str[j++] = (data[i] < 0x20 || data[i] > 0x7e) ? '.' : data[i];
if(j == 8)
printf(" ");
}
/* Remainder...
*/
ln = strlen(ascii_str);
if(ln > 0)
{
for(i=0; i < 16-ln; i++)
printf(" ");
printf(" %s\n\n", ascii_str);
}
}
/***EOF***/

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/*
*****************************************************************************
*
* File: utils.h
*
* Author: Damien Stuart (dstuart@dstuart.org)
*
* Purpose: Header file for utils.c fwknopd server program.
*
* Copyright (C) 2009 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This program 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
*
*****************************************************************************
*/
#ifndef UTILS_H
#define UTILS_H
/* Prototypes
*/
void hex_dump(unsigned char *data, int size);
#ifdef WIN32
/* Function prototypes we need for Windows
*/
size_t strlcat(char *dst, const char *src, size_t siz);
size_t strlcpy(char *dst, const char *src, size_t siz);
#endif
#endif /* UTILS_H */