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#include "utility.h"
#include "krb5.h"
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
krb5int_access acc;
char hexchar (const unsigned int digit);
asn1_error_code asn1_krb5_data_unparse(code, s)
const krb5_data * code;
char ** s;
{
if (*s != NULL) free(*s);
if (code==NULL) {
*s = strdup("<NULL>");
if (*s == NULL) return ENOMEM;
} else if (code->data == NULL || ((int) code->length) <= 0) {
*s = strdup("<EMPTY>");
if (*s==NULL) return ENOMEM;
} else {
unsigned int i;
*s = (char*)calloc((size_t) 3*(code->length), sizeof(char));
if (*s == NULL) return ENOMEM;
for (i = 0; i < code->length; i++) {
(*s)[3*i] = hexchar((unsigned char) (((code->data)[i]&0xF0)>>4));
(*s)[3*i+1] = hexchar((unsigned char) ((code->data)[i]&0x0F));
(*s)[3*i+2] = ' ';
}
(*s)[3*(code->length)-1] = '\0';
}
return 0;
}
char hexchar(digit)
const unsigned int digit;
{
if (digit<=9)
return '0'+digit;
else if (digit<=15)
return 'A'+digit-10;
else
return 'X';
}
krb5_error_code krb5_data_parse(d, s)
krb5_data * d;
const char * s;
{
/*if (d->data != NULL) {
free(d->data);
d->length = 0;
}*/
d->data = (char*)calloc(strlen(s),sizeof(char));
if (d->data == NULL) return ENOMEM;
d->length = strlen(s);
memcpy(d->data,s,strlen(s));
return 0;
}
krb5_error_code krb5_data_hex_parse(krb5_data *d, const char *s)
{
int lo;
long v;
const char *cp;
char *dp;
char buf[2];
d->data = calloc((strlen(s) / 2 + 1), 1);
if (d->data == NULL)
return ENOMEM;
d->length = 0;
buf[1] = '\0';
for (lo = 0, dp = d->data, cp = s; *cp; cp++) {
if (*cp < 0)
return ASN1_PARSE_ERROR;
else if (isspace((unsigned char) *cp))
continue;
else if (isxdigit((unsigned char) *cp)) {
buf[0] = *cp;
v = strtol(buf, NULL, 16);
} else
return ASN1_PARSE_ERROR;
if (lo) {
*dp++ |= v;
lo = 0;
} else {
*dp = v << 4;
lo = 1;
}
}
d->length = dp - d->data;
return 0;
}
#if 0
void asn1buf_print(buf)
const asn1buf * buf;
{
asn1buf bufcopy;
char *s=NULL;
int length;
int i;
bufcopy.base = bufcopy.next = buf->next;
bufcopy.bound = buf->bound;
length = asn1buf_len(&bufcopy);
s = calloc(3*length, sizeof(char));
if (s == NULL) return;
for (i=0; i<length; i++) {
s[3*i] = hexchar(((bufcopy.base)[i]&0xF0)>>4);
s[3*i+1] = hexchar((bufcopy.base)[i]&0x0F);
s[3*i+2] = ' ';
}
s[3*length-1] = '\0';
printf("%s\n",s);
free(s);
}
#endif
void init_access(const char *progname)
{
krb5_error_code ret;
ret = krb5int_accessor(&acc, KRB5INT_ACCESS_VERSION);
if (ret) {
com_err(progname, ret, "while initializing accessor");
exit(1);
}
}
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