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ssafile.c
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// Make Afile
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <popt.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <ctype.h>
#include <err.h>
#include "AJL/ajl.h"
#include "SQLlib/sqllib.h"
#include <openssl/evp.h>
#include "DESFireAES/include/desfireaes.h"
#include "espdefines.h"
unsigned int
makeafile (SQL_RES * res, unsigned char *afile)
{ // Make afile (max 256 characters) and return crc
if (afile)
{ // Default if error
afile[0] = 1;
afile[1] = 0xFB; // Block
}
unsigned char a[256];
int p = 1;
void add (unsigned char v)
{
if (p < 256)
a[p] = v;
p++;
}
void addbcd (unsigned char v)
{
add (((v / 10) << 4) + (v % 10));
}
void addbcd2 (unsigned short v)
{
addbcd (v / 100);
addbcd (v % 100);
}
const char *name = sql_colz (res, "fobname");
if (*name)
{
int l = strlen (name);
if (l > 15)
l = 15;
add (0x40 + l);
for (int i = 0; i < l; i++)
add (name[i]);
}
const char *sms = sql_colz (res, "fobsms");
if (*sms == '+')
sms++;
if (*sms)
{
int l = strlen (sms);
if (l > 30)
l = 30;
if (l & 1)
l++;
add (0x90 + l / 2);
for (int i = 0; i < l; i += 2)
add (((sms[i] - '0') << 4) + ((sms[i + 1] ? : '?') - '0'));
}
if (!res || !sql_col (res, "access") || sql_col (res, "blocked"))
add (0xFB);
else
{
if (res && *sql_colz (res, "commit") == 't')
add (0xF0);
if (res && *sql_colz (res, "count") == 't')
add (0xF1);
if (res && *sql_colz (res, "armlate") == 't')
add (0xFA);
if (res && sql_col (res, "block"))
add (0xFB);
if (res && *sql_colz (res, "clock") == 't')
add (0xFC);
if (res && *sql_colz (res, "override") == 't')
add (0xFF);
time_t expires = 0;
int expiry = atoi (sql_colz (res, "expiry"));
if (expiry > 255)
expiry = 255;
if (res)
expires = sql_time_utc (sql_colz (res, "expires"));
if (expires)
expiry = 0; // Hard expiry instead
if (expiry)
expires = time (0) + 86400 * expiry;
if (expires)
{
if (expiry)
{
add (0x31);
add (expiry);
}
struct tm tm;
gmtime_r (&expires, &tm);
if (expiry || (!tm.tm_hour && !tm.tm_min && !tm.tm_sec) || (tm.tm_hour == 23 && tm.tm_min == 59 && tm.tm_sec == 59))
{ // date only
if (!expiry)
tm.tm_sec--;
expires = timegm (&tm);
gmtime_r (&expires, &tm);
add (0x34);
addbcd2 (tm.tm_year + 1900);
addbcd (tm.tm_mon + 1);
addbcd (tm.tm_mday);
} else
{
add (0x37);
addbcd2 (tm.tm_year + 1900);
addbcd (tm.tm_mon + 1);
addbcd (tm.tm_mday);
addbcd (tm.tm_hour);
addbcd (tm.tm_min);
addbcd (tm.tm_sec);
}
}
static const char *days[] = { "sun", "mon", "tue", "wed", "thu", "fri", "sat" };
unsigned short from[7] = { }, to[7] = { };
int d;
for (d = 0; d < 7; d++)
{
char day[10];
sprintf (day, "%sfrom", days[d]);
const char *v = sql_colz (res, day);
if (strlen (v) >= 5)
from[d] = ((v[0] - '0') * 1000) + ((v[1] - '0') * 100) + ((v[3] - '0') * 10) + (v[4] - '0');
sprintf (day, "%sto", days[d]);
v = sql_colz (res, day);
if (strlen (v) >= 5)
{
to[d] = ((v[0] - '0') * 1000) + ((v[1] - '0') * 100) + ((v[3] - '0') * 10) + (v[4] - '0');
if (to[d] != from[d])
{
to[d]++;
if ((to[d] % 100) == 60)
to[d] += 40;
}
}
}
void addtimes (unsigned short day[7], unsigned char tag)
{
for (d = 1; d < 7 && day[d] == day[0]; d++);
if (d == 7)
{ // All same so one entry
add (tag + 2);
addbcd2 (day[0]);
} else
{
for (d = 2; d < 6 && day[d] == day[1]; d++);
if (d == 6)
{ // weekdays same
if (day[0] == day[6])
{ // weekend same
add (tag + 4);
addbcd2 (day[0]);
addbcd2 (day[1]);
} else
{ // different weekend days
add (tag + 6);
addbcd2 (day[0]);
addbcd2 (day[1]);
addbcd2 (day[6]);
}
} else if (d == 5)
{ // Sun,Mon-Thu,Fri,Say
add (tag + 8);
addbcd2 (day[0]);
addbcd2 (day[1]);
addbcd2 (day[5]);
addbcd2 (day[6]);
} else
{ // different days
add (tag + 14);
for (d = 0; d < 7; d++)
addbcd2 (day[d]);
}
}
}
for (d = 0; d < 7 && !from[d] && to[d] == 0x2400; d++);
if (d < 7)
{
addtimes (from, 0x10);
addtimes (to, 0x20);
}
}
void addarea (unsigned char tag, const char *name)
{
const char *v = sql_col (res, name);
if (v)
{
unsigned int a = 0;
while (*v)
{
const char *p = strchr (AREAS, *v);
if (p)
a |= (0x80000000 >> (p - AREAS));
v++;
}
if (!p)
add (tag);
else if (!(a & 0xFFFFFF))
{
add (tag + 1);
add (a >> 24);
} else if (!(a & 0xFFFF))
{
add (tag + 2);
add (a >> 24);
add (a >> 16);
} else if (!(a & 0xFF))
{
add (tag + 3);
add (a >> 24);
add (a >> 16);
add (a >> 8);
} else
{
add (tag + 4);
add (a >> 24);
add (a >> 16);
add (a >> 8);
add (a);
}
}
}
addarea (0xA0, "arm");
addarea (0xB0, "strong");
addarea (0xC0, "prop");
addarea (0xD0, "disarm");
addarea (0xE0, "enter");
if (p >= 256)
return 0; // Too big
*a = p - 1;
memcpy (afile, a, p);
return df_crc (*a, a + 1);
}