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add support for reading and writing old version cache files

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@6031 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
1999-04-24 16:37:47 +00:00
parent 43aa4ffc00
commit bdaedd40ce
1 changed files with 75 additions and 28 deletions
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103
lib/krb5/fcache.c
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@@ -49,12 +49,15 @@ typedef struct krb5_fcache{
int version;
}krb5_fcache;
#define KRB5_FCC_FVNO_1 0x501
#define KRB5_FCC_FVNO_2 0x502
#define KRB5_FCC_FVNO_3 0x503
#define KRB5_FCC_FVNO_4 0x504
struct fcc_cursor {
int fd;
krb5_storage *sp;
};
#define BYTESWAP(F) ((F)->version == KRB5_FCC_FVNO_1 || (F)->version == KRB5_FCC_FVNO_2)
#define KRB5_FCC_FVNO_1 1
#define KRB5_FCC_FVNO_2 2
#define KRB5_FCC_FVNO_3 3
#define KRB5_FCC_FVNO_4 4
#define FCC_TAG_DELTATIME 1
@@ -62,6 +65,8 @@ typedef struct krb5_fcache{
#define FILENAME(X) (FCACHE(X)->filename)
#define FCC_CURSOR(C) ((struct fcc_cursor*)(C))
static char*
fcc_get_name(krb5_context context,
krb5_ccache id)
@@ -140,6 +145,31 @@ fcc_gen_new(krb5_context context, krb5_ccache *id)
return 0;
}
static void
storage_set_flags(krb5_context context, krb5_storage *sp, int vno)
{
int flags = 0;
switch(vno) {
case KRB5_FCC_FVNO_1:
flags |= KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS;
flags |= KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE;
flags |= KRB5_STORAGE_HOST_BYTEORDER;
break;
case KRB5_FCC_FVNO_2:
flags |= KRB5_STORAGE_HOST_BYTEORDER;
break;
case KRB5_FCC_FVNO_3:
flags |= KRB5_STORAGE_KEYBLOCK_KEYTYPE_TWICE;
break;
case KRB5_FCC_FVNO_4:
break;
default:
krb5_abortx(context,
"storage_set_flags called with bad vno (%x)", vno);
}
krb5_storage_set_flags(sp, flags);
}
static krb5_error_code
fcc_initialize(krb5_context context,
krb5_ccache id,
@@ -159,9 +189,13 @@ fcc_initialize(krb5_context context,
{
krb5_storage *sp;
sp = krb5_storage_from_fd(fd);
f->version = KRB5_FCC_FVNO_4;
krb5_store_int16(sp, f->version);
krb5_storage_set_host_byteorder(sp, BYTESWAP(f));
if(context->fcache_vno != 0)
f->version = context->fcache_vno;
else
f->version = KRB5_FCC_FVNO_4;
krb5_store_int8(sp, 5);
krb5_store_int8(sp, f->version);
storage_set_flags(context, sp, f->version);
if(f->version == KRB5_FCC_FVNO_4) {
/* V4 stuff */
if (context->kdc_sec_offset) {
@@ -219,7 +253,7 @@ fcc_store_cred(krb5_context context,
{
krb5_storage *sp;
sp = krb5_storage_from_fd(fd);
krb5_storage_set_host_byteorder(sp, BYTESWAP(FCACHE(id)));
storage_set_flags(context, sp, FCACHE(id)->version);
krb5_store_creds(sp, creds);
krb5_storage_free(sp);
}
@@ -228,21 +262,16 @@ fcc_store_cred(krb5_context context,
}
static krb5_error_code
fcc_read_cred (krb5_fcache *fc,
int fd,
fcc_read_cred (krb5_context context,
krb5_fcache *fc,
krb5_storage *sp,
krb5_creds *creds)
{
krb5_error_code ret;
krb5_storage *sp;
sp = krb5_storage_from_fd(fd);
if(sp == NULL)
return ENOMEM;
storage_set_flags(context, sp, fc->version);
krb5_storage_set_host_byteorder(sp, BYTESWAP(fc));
ret = krb5_ret_creds(sp, creds);
krb5_storage_free(sp);
return ret;
}
@@ -253,16 +282,22 @@ init_fcc (krb5_context context,
int *ret_fd)
{
int fd;
int16_t tag;
int8_t pvno, tag;
krb5_storage *sp;
fd = open(fcache->filename, O_RDONLY | O_BINARY);
if(fd < 0)
return errno;
sp = krb5_storage_from_fd(fd);
krb5_ret_int16(sp, &tag); /* should not be host byte order */
krb5_ret_int8(sp, &pvno);
if(pvno != 5) {
krb5_storage_free(sp);
close(fd);
return KRB5_CCACHE_BADVNO;
}
krb5_ret_int8(sp, &tag); /* should not be host byte order */
fcache->version = tag;
krb5_storage_set_host_byteorder(sp, BYTESWAP(fcache));
storage_set_flags(context, sp, fcache->version);
switch (tag) {
case KRB5_FCC_FVNO_4: {
int16_t length;
@@ -329,14 +364,15 @@ fcc_get_first (krb5_context context,
{
krb5_error_code ret;
krb5_principal principal;
krb5_storage *sp;
krb5_fcache *f = FCACHE(id);
ret = init_fcc (context, f, &sp, &cursor->u.fd);
*cursor = malloc(sizeof(struct fcc_cursor));
ret = init_fcc (context, f, &FCC_CURSOR(*cursor)->sp,
&FCC_CURSOR(*cursor)->fd);
if (ret)
return ret;
krb5_ret_principal (sp, &principal);
krb5_storage_free(sp);
krb5_ret_principal (FCC_CURSOR(*cursor)->sp, &principal);
krb5_free_principal (context, principal);
return 0;
}
@@ -347,7 +383,7 @@ fcc_get_next (krb5_context context,
krb5_cc_cursor *cursor,
krb5_creds *creds)
{
return fcc_read_cred (FCACHE(id), cursor->u.fd, creds);
return fcc_read_cred (context, FCACHE(id), FCC_CURSOR(*cursor)->sp, creds);
}
static krb5_error_code
@@ -355,7 +391,10 @@ fcc_end_get (krb5_context context,
krb5_ccache id,
krb5_cc_cursor *cursor)
{
return close (cursor->u.fd);
krb5_storage_free(FCC_CURSOR(*cursor)->sp);
close (FCC_CURSOR(*cursor)->fd);
free(*cursor);
return 0;
}
static krb5_error_code
@@ -374,6 +413,13 @@ fcc_set_flags(krb5_context context,
{
return 0; /* XXX */
}
static krb5_error_code
fcc_get_version(krb5_context context,
krb5_ccache id)
{
return FCACHE(id)->version;
}
const krb5_cc_ops krb5_fcc_ops = {
"FILE",
@@ -390,5 +436,6 @@ const krb5_cc_ops krb5_fcc_ops = {
fcc_get_next,
fcc_end_get,
fcc_remove_cred,
fcc_set_flags
fcc_set_flags,
fcc_get_version
};