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#include <check_data.h>
#include <print_data.h>
#include <string.h>
#include <regex.h>
// Linux has no isnumber function? (Debian 4.0 has no such function)
#ifndef isnumber
inline int isnumber(char c) {
return (isdigit(c) || c == '.' || c == '-');
}
#endif
#define MAX_CHAR_PREFIX_LENGTH 0xfff
/*******************************************************************/
inline ulonglong make_ulonglong(dulint x) {
ulonglong lx = x.high;
lx <<= 32;
lx += x.low;
return lx;
}
/*******************************************************************/
inline longlong make_longlong(dulint x) {
longlong lx = x.high;
lx <<= 32;
lx += x.low;
return lx;
}
/*******************************************************************/
inline ibool check_datetime(ulonglong ldate) {
int year, month, day, hour, min, sec;
ldate &= ~(1ULL << 63);
if (ldate == 0) return TRUE;
if (debug) printf("DATE=OK ");
sec = ldate % 100; ldate /= 100;
if (debug) printf("SEC(%d)", sec);
if (sec < 0 || sec > 59) return FALSE;
if (debug) printf("=OK ");
min = ldate % 100; ldate /= 100;
if (debug) printf("MIN(%d)", min);
if (min < 0 || min > 59) return FALSE;
if (debug) printf("=OK ");
hour = ldate % 100; ldate /= 100;
if (debug) printf("HOUR(%d)", hour);
if (hour < 0 || hour > 23) return FALSE;
if (debug) printf("=OK ");
day = ldate % 100; ldate /= 100;
if (debug) printf("DAY(%d)", day);
if (day < 0 || day > 31) return FALSE;
if (debug) printf("=OK ");
month = ldate % 100; ldate /= 100;
if (debug) printf("MONTH(%d)", month);
if (month < 0 || month > 12) return FALSE;
if (debug) printf("=OK ");
year = ldate % 10000;
if (debug) printf("YEAR(%d)", year);
if (year < 1950 || year > 2050) return FALSE;
if (debug) printf("=OK ");
return TRUE;
}
/*******************************************************************/
inline ibool check_char_ascii(char *value, ulint len) {
char *p = value;
if (!len) return TRUE;
do {
if (!isprint(*p) && *p != '\n' && *p != '\t' && *p != '\r') return FALSE;
} while (++p < value + len);
return TRUE;
}
/*******************************************************************/
inline ibool check_char_digits(char *value, ulint len) {
char *p = value;
if (!len) return TRUE;
do {
if (!isdigit(*p)) return FALSE;
} while (++p < value + len);
return TRUE;
}
/*******************************************************************/
// Try and match a given regular expression with a given text.
// Returns TRUE/FALSE upon match/mismatch respectively.
// The function recomputes the regular expression per call. There is
// no caching of regex. This can be optimized later on.
/*******************************************************************/
inline ibool regex_match(const char *string, char *pattern) {
int status;
regex_t re;
if(regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB) != 0)
return 0;
status = regexec(&re, string, (size_t)0, NULL, 0);
regfree(&re);
if(status == 0)
return TRUE; // success
else
return FALSE; // no match
}
/*******************************************************************/
// Validate regex constraints.
// Given value is not null terminated. When len < 4096, use
// statically allocated buffer; otherwise, allocate with malloc.
// For long texts, this means a lot of overhead.
/*******************************************************************/
inline ibool check_regex_match(char *value, ulint len, char *pattern)
{
static char prefix[MAX_CHAR_PREFIX_LENGTH + 1];
char * null_terminated_value = NULL ;
ibool result = FALSE ;
if (len <= MAX_CHAR_PREFIX_LENGTH)
{
null_terminated_value = prefix;
}
else
{
null_terminated_value = (char*)malloc(len + 1);
}
strncpy(null_terminated_value, value, len-1);
null_terminated_value[len] = 0;
if (regex_match(null_terminated_value, pattern))
{
result = TRUE ;
}
if (null_terminated_value != prefix)
{
free(null_terminated_value);
}
return result;
}
/*******************************************************************/
ibool check_field_limits(field_def_t *field, byte *value, ulint len) {
long long int int_value;
unsigned long long int uint_value;
switch (field->type) {
case FT_INT:
int_value = get_int_value(field, value);
if (debug) printf("INT(%i)=%lli ", field->fixed_length, int_value);
if (int_value < field->limits.int_min_val) {
if (debug) printf(" is less than %lli ", field->limits.int_min_val);
return FALSE;
}
if (int_value > field->limits.int_max_val) {
if (debug) printf(" is more than %lli ", field->limits.int_max_val);
return FALSE;
}
break;
case FT_UINT:
uint_value = get_uint_value(field, value);
if (debug) printf("UINT(%i)=%llu ", field->fixed_length, uint_value);
if (uint_value < field->limits.uint_min_val) {
if (debug) printf(" is less than %llu ", field->limits.uint_min_val);
return FALSE;
}
if (uint_value > field->limits.uint_max_val) {
if (debug) printf(" is more than %llu ", field->limits.uint_max_val);
return FALSE;
}
break;
// case FT_TEXT:
case FT_CHAR:
if (debug) {
if (len != UNIV_SQL_NULL) {
if (len <= 30) {
ut_print_buf(stdout, value, len);
} else {
ut_print_buf(stdout, value, 30);
printf("...(truncated)");
}
} else {
printf("SQL NULL ");
}
}
if (len < field->limits.char_min_len) return FALSE;
if (len > field->limits.char_max_len) return FALSE;
if (field->limits.char_ascii_only && !check_char_ascii((char*)value, len)) return FALSE;
if (field->limits.char_digits_only && !check_char_digits((char*)value, len)) return FALSE;
if (field->limits.char_regex != NULL) {
if (!check_regex_match((char *)value, len, field->limits.char_regex))
{
if (debug) printf(" does not match regex [[%s]] ", (char*)field->limits.char_regex);
return FALSE;
}
}
break;
case FT_DATE:
case FT_DATETIME:
if (!check_datetime(make_longlong(mach_read_from_8(value)))) return FALSE;
break;
case FT_ENUM:
int_value = get_int_value(field, value);
if (debug) printf("ENUM=%lli ", int_value);
if (int_value < 1 || int_value > field->limits.enum_values_count) return FALSE;
break;
default:
break;
}
return TRUE;
}
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