static int
eiCheckFiletype(FILE *eifp)
{
char rectype[EIF_MAX_RECTYPE_LEN+1];
char value[EIF_MAX_VALUE_LEN+1];
int r;
if((r = eiGetRecord(eifp, rectype, value)) != 0) goto done;
if(strcmp(rectype, "FILETYPE") || strcmp(value, RSGCRY_FILETYPE_NAME)) {
fprintf(stderr, "invalid filetype \"cookie\" in encryption "
"info file\n");
fprintf(stderr, "\trectype: '%s', value: '%s'\n", rectype, value);
r = 1; goto done;
}
r = 0;
done: return r;
}
static int
eiGetEND(FILE *eifp, off64_t *offs)
{
char rectype[EIF_MAX_RECTYPE_LEN+1];
char value[EIF_MAX_VALUE_LEN+1];
int r;
if((r = eiGetRecord(eifp, rectype, value)) != 0) goto done;
if(strcmp(rectype, "END")) {
fprintf(stderr, "no END record found when expected, record type "
"seen is '%s'\n", rectype);
r = 1; goto done;
}
*offs = atoll(value);
r = 0;
done: return r;
}
static rsRetVal
eiGetEND(gcryfile gf, off64_t *offs)
{
char rectype[EIF_MAX_RECTYPE_LEN+1];
char value[EIF_MAX_VALUE_LEN+1];
DEFiRet;
CHKiRet(eiGetRecord(gf, rectype, value));
if(strcmp(rectype, "END")) {
DBGPRINTF("no END record found when expected, record type "
"seen is '%s'\n", rectype);
ABORT_FINALIZE(RS_RET_ERR);
}
*offs = atoll(value);
finalize_it:
RETiRet;
}
static int
eiGetIV(FILE *eifp, char *iv, size_t leniv)
{
char rectype[EIF_MAX_RECTYPE_LEN+1];
char value[EIF_MAX_VALUE_LEN+1];
size_t valueLen;
unsigned short i, j;
int r;
unsigned char nibble;
if((r = eiGetRecord(eifp, rectype, value)) != 0) goto done;
if(strcmp(rectype, "IV")) {
fprintf(stderr, "no IV record found when expected, record type "
"seen is '%s'\n", rectype);
r = 1; goto done;
}
valueLen = strlen(value);
if(valueLen/2 != leniv) {
fprintf(stderr, "length of IV is %d, expected %d\n",
valueLen/2, leniv);
r = 1; goto done;
}
for(i = j = 0 ; i < valueLen ; ++i) {
if(value[i] >= '0' && value[i] <= '9')
nibble = value[i] - '0';
else if(value[i] >= 'a' && value[i] <= 'f')
nibble = value[i] - 'a' + 10;
else {
fprintf(stderr, "invalid IV '%s'\n", value);
r = 1; goto done;
}
if(i % 2 == 0)
iv[j] = nibble << 4;
else
iv[j++] |= nibble;
}
r = 0;
done: return r;
}
static rsRetVal
eiGetIV(gcryfile gf, uchar *iv, size_t leniv)
{
char rectype[EIF_MAX_RECTYPE_LEN+1];
char value[EIF_MAX_VALUE_LEN+1];
size_t valueLen;
unsigned short i, j;
unsigned char nibble;
DEFiRet;
CHKiRet(eiGetRecord(gf, rectype, value));
if(strcmp(rectype, "IV")) {
DBGPRINTF("no IV record found when expected, record type "
"seen is '%s'\n", rectype);
ABORT_FINALIZE(RS_RET_ERR);
}
valueLen = strlen(value);
if(valueLen/2 != leniv) {
DBGPRINTF("length of IV is %zd, expected %zd\n",
valueLen/2, leniv);
ABORT_FINALIZE(RS_RET_ERR);
}
for(i = j = 0 ; i < valueLen ; ++i) {
if(value[i] >= '0' && value[i] <= '9')
nibble = value[i] - '0';
else if(value[i] >= 'a' && value[i] <= 'f')
nibble = value[i] - 'a' + 10;
else {
DBGPRINTF("invalid IV '%s'\n", value);
ABORT_FINALIZE(RS_RET_ERR);
}
if(i % 2 == 0)
iv[j] = nibble << 4;
else
iv[j++] |= nibble;
}
finalize_it:
RETiRet;
}
