diff options
Diffstat (limited to 'lib/krb5/store.c')
| -rw-r--r-- | lib/krb5/store.c | 1035 |
1 files changed, 1035 insertions, 0 deletions
diff --git a/lib/krb5/store.c b/lib/krb5/store.c new file mode 100644 index 0000000..c9cbbb5 --- /dev/null +++ b/lib/krb5/store.c @@ -0,0 +1,1035 @@ +/* + * Copyright (c) 1997-2006 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "krb5_locl.h" +#include "store-int.h" + +RCSID("$Id: store.c 22071 2007-11-14 20:04:50Z lha $"); + +#define BYTEORDER_IS(SP, V) (((SP)->flags & KRB5_STORAGE_BYTEORDER_MASK) == (V)) +#define BYTEORDER_IS_LE(SP) BYTEORDER_IS((SP), KRB5_STORAGE_BYTEORDER_LE) +#define BYTEORDER_IS_BE(SP) BYTEORDER_IS((SP), KRB5_STORAGE_BYTEORDER_BE) +#define BYTEORDER_IS_HOST(SP) (BYTEORDER_IS((SP), KRB5_STORAGE_BYTEORDER_HOST) || \ + krb5_storage_is_flags((SP), KRB5_STORAGE_HOST_BYTEORDER)) + +void KRB5_LIB_FUNCTION +krb5_storage_set_flags(krb5_storage *sp, krb5_flags flags) +{ + sp->flags |= flags; +} + +void KRB5_LIB_FUNCTION +krb5_storage_clear_flags(krb5_storage *sp, krb5_flags flags) +{ + sp->flags &= ~flags; +} + +krb5_boolean KRB5_LIB_FUNCTION +krb5_storage_is_flags(krb5_storage *sp, krb5_flags flags) +{ + return (sp->flags & flags) == flags; +} + +void KRB5_LIB_FUNCTION +krb5_storage_set_byteorder(krb5_storage *sp, krb5_flags byteorder) +{ + sp->flags &= ~KRB5_STORAGE_BYTEORDER_MASK; + sp->flags |= byteorder; +} + +krb5_flags KRB5_LIB_FUNCTION +krb5_storage_get_byteorder(krb5_storage *sp, krb5_flags byteorder) +{ + return sp->flags & KRB5_STORAGE_BYTEORDER_MASK; +} + +off_t KRB5_LIB_FUNCTION +krb5_storage_seek(krb5_storage *sp, off_t offset, int whence) +{ + return (*sp->seek)(sp, offset, whence); +} + +krb5_ssize_t KRB5_LIB_FUNCTION +krb5_storage_read(krb5_storage *sp, void *buf, size_t len) +{ + return sp->fetch(sp, buf, len); +} + +krb5_ssize_t KRB5_LIB_FUNCTION +krb5_storage_write(krb5_storage *sp, const void *buf, size_t len) +{ + return sp->store(sp, buf, len); +} + +void KRB5_LIB_FUNCTION +krb5_storage_set_eof_code(krb5_storage *sp, int code) +{ + sp->eof_code = code; +} + +krb5_ssize_t KRB5_LIB_FUNCTION +_krb5_put_int(void *buffer, unsigned long value, size_t size) +{ + unsigned char *p = buffer; + int i; + for (i = size - 1; i >= 0; i--) { + p[i] = value & 0xff; + value >>= 8; + } + return size; +} + +krb5_ssize_t KRB5_LIB_FUNCTION +_krb5_get_int(void *buffer, unsigned long *value, size_t size) +{ + unsigned char *p = buffer; + unsigned long v = 0; + int i; + for (i = 0; i < size; i++) + v = (v << 8) + p[i]; + *value = v; + return size; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_storage_free(krb5_storage *sp) +{ + if(sp->free) + (*sp->free)(sp); + free(sp->data); + free(sp); + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_storage_to_data(krb5_storage *sp, krb5_data *data) +{ + off_t pos; + size_t size; + krb5_error_code ret; + + pos = sp->seek(sp, 0, SEEK_CUR); + size = (size_t)sp->seek(sp, 0, SEEK_END); + ret = krb5_data_alloc (data, size); + if (ret) { + sp->seek(sp, pos, SEEK_SET); + return ret; + } + if (size) { + sp->seek(sp, 0, SEEK_SET); + sp->fetch(sp, data->data, data->length); + sp->seek(sp, pos, SEEK_SET); + } + return 0; +} + +static krb5_error_code +krb5_store_int(krb5_storage *sp, + int32_t value, + size_t len) +{ + int ret; + unsigned char v[16]; + + if(len > sizeof(v)) + return EINVAL; + _krb5_put_int(v, value, len); + ret = sp->store(sp, v, len); + if (ret != len) + return (ret<0)?errno:sp->eof_code; + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_int32(krb5_storage *sp, + int32_t value) +{ + if(BYTEORDER_IS_HOST(sp)) + value = htonl(value); + else if(BYTEORDER_IS_LE(sp)) + value = bswap32(value); + return krb5_store_int(sp, value, 4); +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_uint32(krb5_storage *sp, + uint32_t value) +{ + return krb5_store_int32(sp, (int32_t)value); +} + +static krb5_error_code +krb5_ret_int(krb5_storage *sp, + int32_t *value, + size_t len) +{ + int ret; + unsigned char v[4]; + unsigned long w; + ret = sp->fetch(sp, v, len); + if(ret != len) + return (ret<0)?errno:sp->eof_code; + _krb5_get_int(v, &w, len); + *value = w; + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_int32(krb5_storage *sp, + int32_t *value) +{ + krb5_error_code ret = krb5_ret_int(sp, value, 4); + if(ret) + return ret; + if(BYTEORDER_IS_HOST(sp)) + *value = htonl(*value); + else if(BYTEORDER_IS_LE(sp)) + *value = bswap32(*value); + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_uint32(krb5_storage *sp, + uint32_t *value) +{ + krb5_error_code ret; + int32_t v; + + ret = krb5_ret_int32(sp, &v); + if (ret == 0) + *value = (uint32_t)v; + + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_int16(krb5_storage *sp, + int16_t value) +{ + if(BYTEORDER_IS_HOST(sp)) + value = htons(value); + else if(BYTEORDER_IS_LE(sp)) + value = bswap16(value); + return krb5_store_int(sp, value, 2); +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_uint16(krb5_storage *sp, + uint16_t value) +{ + return krb5_store_int16(sp, (int16_t)value); +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_int16(krb5_storage *sp, + int16_t *value) +{ + int32_t v; + int ret; + ret = krb5_ret_int(sp, &v, 2); + if(ret) + return ret; + *value = v; + if(BYTEORDER_IS_HOST(sp)) + *value = htons(*value); + else if(BYTEORDER_IS_LE(sp)) + *value = bswap16(*value); + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_uint16(krb5_storage *sp, + uint16_t *value) +{ + krb5_error_code ret; + int16_t v; + + ret = krb5_ret_int16(sp, &v); + if (ret == 0) + *value = (uint16_t)v; + + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_int8(krb5_storage *sp, + int8_t value) +{ + int ret; + + ret = sp->store(sp, &value, sizeof(value)); + if (ret != sizeof(value)) + return (ret<0)?errno:sp->eof_code; + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_uint8(krb5_storage *sp, + uint8_t value) +{ + return krb5_store_int8(sp, (int8_t)value); +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_int8(krb5_storage *sp, + int8_t *value) +{ + int ret; + + ret = sp->fetch(sp, value, sizeof(*value)); + if (ret != sizeof(*value)) + return (ret<0)?errno:sp->eof_code; + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_uint8(krb5_storage *sp, + uint8_t *value) +{ + krb5_error_code ret; + int8_t v; + + ret = krb5_ret_int8(sp, &v); + if (ret == 0) + *value = (uint8_t)v; + + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_data(krb5_storage *sp, + krb5_data data) +{ + int ret; + ret = krb5_store_int32(sp, data.length); + if(ret < 0) + return ret; + ret = sp->store(sp, data.data, data.length); + if(ret != data.length){ + if(ret < 0) + return errno; + return sp->eof_code; + } + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_data(krb5_storage *sp, + krb5_data *data) +{ + int ret; + int32_t size; + + ret = krb5_ret_int32(sp, &size); + if(ret) + return ret; + ret = krb5_data_alloc (data, size); + if (ret) + return ret; + if (size) { + ret = sp->fetch(sp, data->data, size); + if(ret != size) + return (ret < 0)? errno : sp->eof_code; + } + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_string(krb5_storage *sp, const char *s) +{ + krb5_data data; + data.length = strlen(s); + data.data = rk_UNCONST(s); + return krb5_store_data(sp, data); +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_string(krb5_storage *sp, + char **string) +{ + int ret; + krb5_data data; + ret = krb5_ret_data(sp, &data); + if(ret) + return ret; + *string = realloc(data.data, data.length + 1); + if(*string == NULL){ + free(data.data); + return ENOMEM; + } + (*string)[data.length] = 0; + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_stringz(krb5_storage *sp, const char *s) +{ + size_t len = strlen(s) + 1; + ssize_t ret; + + ret = sp->store(sp, s, len); + if(ret != len) { + if(ret < 0) + return ret; + else + return sp->eof_code; + } + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_stringz(krb5_storage *sp, + char **string) +{ + char c; + char *s = NULL; + size_t len = 0; + ssize_t ret; + + while((ret = sp->fetch(sp, &c, 1)) == 1){ + char *tmp; + + len++; + tmp = realloc (s, len); + if (tmp == NULL) { + free (s); + return ENOMEM; + } + s = tmp; + s[len - 1] = c; + if(c == 0) + break; + } + if(ret != 1){ + free(s); + if(ret == 0) + return sp->eof_code; + return ret; + } + *string = s; + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_stringnl(krb5_storage *sp, const char *s) +{ + size_t len = strlen(s); + ssize_t ret; + + ret = sp->store(sp, s, len); + if(ret != len) { + if(ret < 0) + return ret; + else + return sp->eof_code; + } + ret = sp->store(sp, "\n", 1); + if(ret != 1) { + if(ret < 0) + return ret; + else + return sp->eof_code; + } + + return 0; + +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_stringnl(krb5_storage *sp, + char **string) +{ + int expect_nl = 0; + char c; + char *s = NULL; + size_t len = 0; + ssize_t ret; + + while((ret = sp->fetch(sp, &c, 1)) == 1){ + char *tmp; + + if (c == '\r') { + expect_nl = 1; + continue; + } + if (expect_nl && c != '\n') { + free(s); + return KRB5_BADMSGTYPE; + } + + len++; + tmp = realloc (s, len); + if (tmp == NULL) { + free (s); + return ENOMEM; + } + s = tmp; + if(c == '\n') { + s[len - 1] = '\0'; + break; + } + s[len - 1] = c; + } + if(ret != 1){ + free(s); + if(ret == 0) + return sp->eof_code; + return ret; + } + *string = s; + return 0; +} + + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_principal(krb5_storage *sp, + krb5_const_principal p) +{ + int i; + int ret; + + if(!krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE)) { + ret = krb5_store_int32(sp, p->name.name_type); + if(ret) return ret; + } + if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS)) + ret = krb5_store_int32(sp, p->name.name_string.len + 1); + else + ret = krb5_store_int32(sp, p->name.name_string.len); + + if(ret) return ret; + ret = krb5_store_string(sp, p->realm); + if(ret) return ret; + for(i = 0; i < p->name.name_string.len; i++){ + ret = krb5_store_string(sp, p->name.name_string.val[i]); + if(ret) return ret; + } + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_principal(krb5_storage *sp, + krb5_principal *princ) +{ + int i; + int ret; + krb5_principal p; + int32_t type; + int32_t ncomp; + + p = calloc(1, sizeof(*p)); + if(p == NULL) + return ENOMEM; + + if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE)) + type = KRB5_NT_UNKNOWN; + else if((ret = krb5_ret_int32(sp, &type))){ + free(p); + return ret; + } + if((ret = krb5_ret_int32(sp, &ncomp))){ + free(p); + return ret; + } + if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS)) + ncomp--; + if (ncomp < 0) { + free(p); + return EINVAL; + } + p->name.name_type = type; + p->name.name_string.len = ncomp; + ret = krb5_ret_string(sp, &p->realm); + if(ret) { + free(p); + return ret; + } + p->name.name_string.val = calloc(ncomp, sizeof(*p->name.name_string.val)); + if(p->name.name_string.val == NULL && ncomp != 0){ + free(p->realm); + free(p); + return ENOMEM; + } + for(i = 0; i < ncomp; i++){ + ret = krb5_ret_string(sp, &p->name.name_string.val[i]); + if(ret) { + while (i >= 0) + free(p->name.name_string.val[i--]); + free(p->realm); + free(p); + return ret; + } + } + *princ = p; + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_keyblock(krb5_storage *sp, krb5_keyblock p) +{ + int ret; + ret = krb5_store_int16(sp, p.keytype); + if(ret) return ret; + + if(krb5_storage_is_flags(sp, KRB5_STORAGE_KEYBLOCK_KEYTYPE_TWICE)){ + /* this should really be enctype, but it is the same as + keytype nowadays */ + ret = krb5_store_int16(sp, p.keytype); + if(ret) return ret; + } + + ret = krb5_store_data(sp, p.keyvalue); + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_keyblock(krb5_storage *sp, krb5_keyblock *p) +{ + int ret; + int16_t tmp; + + ret = krb5_ret_int16(sp, &tmp); + if(ret) return ret; + p->keytype = tmp; + + if(krb5_storage_is_flags(sp, KRB5_STORAGE_KEYBLOCK_KEYTYPE_TWICE)){ + ret = krb5_ret_int16(sp, &tmp); + if(ret) return ret; + } + + ret = krb5_ret_data(sp, &p->keyvalue); + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_times(krb5_storage *sp, krb5_times times) +{ + int ret; + ret = krb5_store_int32(sp, times.authtime); + if(ret) return ret; + ret = krb5_store_int32(sp, times.starttime); + if(ret) return ret; + ret = krb5_store_int32(sp, times.endtime); + if(ret) return ret; + ret = krb5_store_int32(sp, times.renew_till); + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_times(krb5_storage *sp, krb5_times *times) +{ + int ret; + int32_t tmp; + ret = krb5_ret_int32(sp, &tmp); + times->authtime = tmp; + if(ret) return ret; + ret = krb5_ret_int32(sp, &tmp); + times->starttime = tmp; + if(ret) return ret; + ret = krb5_ret_int32(sp, &tmp); + times->endtime = tmp; + if(ret) return ret; + ret = krb5_ret_int32(sp, &tmp); + times->renew_till = tmp; + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_address(krb5_storage *sp, krb5_address p) +{ + int ret; + ret = krb5_store_int16(sp, p.addr_type); + if(ret) return ret; + ret = krb5_store_data(sp, p.address); + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_address(krb5_storage *sp, krb5_address *adr) +{ + int16_t t; + int ret; + ret = krb5_ret_int16(sp, &t); + if(ret) return ret; + adr->addr_type = t; + ret = krb5_ret_data(sp, &adr->address); + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_addrs(krb5_storage *sp, krb5_addresses p) +{ + int i; + int ret; + ret = krb5_store_int32(sp, p.len); + if(ret) return ret; + for(i = 0; i<p.len; i++){ + ret = krb5_store_address(sp, p.val[i]); + if(ret) break; + } + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_addrs(krb5_storage *sp, krb5_addresses *adr) +{ + int i; + int ret; + int32_t tmp; + + ret = krb5_ret_int32(sp, &tmp); + if(ret) return ret; + adr->len = tmp; + ALLOC(adr->val, adr->len); + if (adr->val == NULL && adr->len != 0) + return ENOMEM; + for(i = 0; i < adr->len; i++){ + ret = krb5_ret_address(sp, &adr->val[i]); + if(ret) break; + } + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_authdata(krb5_storage *sp, krb5_authdata auth) +{ + krb5_error_code ret; + int i; + ret = krb5_store_int32(sp, auth.len); + if(ret) return ret; + for(i = 0; i < auth.len; i++){ + ret = krb5_store_int16(sp, auth.val[i].ad_type); + if(ret) break; + ret = krb5_store_data(sp, auth.val[i].ad_data); + if(ret) break; + } + return 0; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_authdata(krb5_storage *sp, krb5_authdata *auth) +{ + krb5_error_code ret; + int32_t tmp; + int16_t tmp2; + int i; + ret = krb5_ret_int32(sp, &tmp); + if(ret) return ret; + ALLOC_SEQ(auth, tmp); + if (auth->val == NULL && tmp != 0) + return ENOMEM; + for(i = 0; i < tmp; i++){ + ret = krb5_ret_int16(sp, &tmp2); + if(ret) break; + auth->val[i].ad_type = tmp2; + ret = krb5_ret_data(sp, &auth->val[i].ad_data); + if(ret) break; + } + return ret; +} + +static int32_t +bitswap32(int32_t b) +{ + int32_t r = 0; + int i; + for (i = 0; i < 32; i++) { + r = r << 1 | (b & 1); + b = b >> 1; + } + return r; +} + + +/* + * + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_creds(krb5_storage *sp, krb5_creds *creds) +{ + int ret; + + ret = krb5_store_principal(sp, creds->client); + if(ret) + return ret; + ret = krb5_store_principal(sp, creds->server); + if(ret) + return ret; + ret = krb5_store_keyblock(sp, creds->session); + if(ret) + return ret; + ret = krb5_store_times(sp, creds->times); + if(ret) + return ret; + ret = krb5_store_int8(sp, creds->second_ticket.length != 0); /* is_skey */ + if(ret) + return ret; + + if(krb5_storage_is_flags(sp, KRB5_STORAGE_CREDS_FLAGS_WRONG_BITORDER)) + ret = krb5_store_int32(sp, creds->flags.i); + else + ret = krb5_store_int32(sp, bitswap32(TicketFlags2int(creds->flags.b))); + if(ret) + return ret; + + ret = krb5_store_addrs(sp, creds->addresses); + if(ret) + return ret; + ret = krb5_store_authdata(sp, creds->authdata); + if(ret) + return ret; + ret = krb5_store_data(sp, creds->ticket); + if(ret) + return ret; + ret = krb5_store_data(sp, creds->second_ticket); + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_creds(krb5_storage *sp, krb5_creds *creds) +{ + krb5_error_code ret; + int8_t dummy8; + int32_t dummy32; + + memset(creds, 0, sizeof(*creds)); + ret = krb5_ret_principal (sp, &creds->client); + if(ret) goto cleanup; + ret = krb5_ret_principal (sp, &creds->server); + if(ret) goto cleanup; + ret = krb5_ret_keyblock (sp, &creds->session); + if(ret) goto cleanup; + ret = krb5_ret_times (sp, &creds->times); + if(ret) goto cleanup; + ret = krb5_ret_int8 (sp, &dummy8); + if(ret) goto cleanup; + ret = krb5_ret_int32 (sp, &dummy32); + if(ret) goto cleanup; + /* + * Runtime detect the what is the higher bits of the bitfield. If + * any of the higher bits are set in the input data, it's either a + * new ticket flag (and this code need to be removed), or it's a + * MIT cache (or new Heimdal cache), lets change it to our current + * format. + */ + { + uint32_t mask = 0xffff0000; + creds->flags.i = 0; + creds->flags.b.anonymous = 1; + if (creds->flags.i & mask) + mask = ~mask; + if (dummy32 & mask) + dummy32 = bitswap32(dummy32); + } + creds->flags.i = dummy32; + ret = krb5_ret_addrs (sp, &creds->addresses); + if(ret) goto cleanup; + ret = krb5_ret_authdata (sp, &creds->authdata); + if(ret) goto cleanup; + ret = krb5_ret_data (sp, &creds->ticket); + if(ret) goto cleanup; + ret = krb5_ret_data (sp, &creds->second_ticket); +cleanup: + if(ret) { +#if 0 + krb5_free_cred_contents(context, creds); /* XXX */ +#endif + } + return ret; +} + +#define SC_CLIENT_PRINCIPAL 0x0001 +#define SC_SERVER_PRINCIPAL 0x0002 +#define SC_SESSION_KEY 0x0004 +#define SC_TICKET 0x0008 +#define SC_SECOND_TICKET 0x0010 +#define SC_AUTHDATA 0x0020 +#define SC_ADDRESSES 0x0040 + +/* + * + */ + +krb5_error_code KRB5_LIB_FUNCTION +krb5_store_creds_tag(krb5_storage *sp, krb5_creds *creds) +{ + int ret; + int32_t header = 0; + + if (creds->client) + header |= SC_CLIENT_PRINCIPAL; + if (creds->server) + header |= SC_SERVER_PRINCIPAL; + if (creds->session.keytype != ETYPE_NULL) + header |= SC_SESSION_KEY; + if (creds->ticket.data) + header |= SC_TICKET; + if (creds->second_ticket.length) + header |= SC_SECOND_TICKET; + if (creds->authdata.len) + header |= SC_AUTHDATA; + if (creds->addresses.len) + header |= SC_ADDRESSES; + + ret = krb5_store_int32(sp, header); + + if (creds->client) { + ret = krb5_store_principal(sp, creds->client); + if(ret) + return ret; + } + + if (creds->server) { + ret = krb5_store_principal(sp, creds->server); + if(ret) + return ret; + } + + if (creds->session.keytype != ETYPE_NULL) { + ret = krb5_store_keyblock(sp, creds->session); + if(ret) + return ret; + } + + ret = krb5_store_times(sp, creds->times); + if(ret) + return ret; + ret = krb5_store_int8(sp, creds->second_ticket.length != 0); /* is_skey */ + if(ret) + return ret; + + ret = krb5_store_int32(sp, bitswap32(TicketFlags2int(creds->flags.b))); + if(ret) + return ret; + + if (creds->addresses.len) { + ret = krb5_store_addrs(sp, creds->addresses); + if(ret) + return ret; + } + + if (creds->authdata.len) { + ret = krb5_store_authdata(sp, creds->authdata); + if(ret) + return ret; + } + + if (creds->ticket.data) { + ret = krb5_store_data(sp, creds->ticket); + if(ret) + return ret; + } + + if (creds->second_ticket.data) { + ret = krb5_store_data(sp, creds->second_ticket); + if (ret) + return ret; + } + + return ret; +} + +krb5_error_code KRB5_LIB_FUNCTION +krb5_ret_creds_tag(krb5_storage *sp, + krb5_creds *creds) +{ + krb5_error_code ret; + int8_t dummy8; + int32_t dummy32, header; + + memset(creds, 0, sizeof(*creds)); + + ret = krb5_ret_int32 (sp, &header); + if (ret) goto cleanup; + + if (header & SC_CLIENT_PRINCIPAL) { + ret = krb5_ret_principal (sp, &creds->client); + if(ret) goto cleanup; + } + if (header & SC_SERVER_PRINCIPAL) { + ret = krb5_ret_principal (sp, &creds->server); + if(ret) goto cleanup; + } + if (header & SC_SESSION_KEY) { + ret = krb5_ret_keyblock (sp, &creds->session); + if(ret) goto cleanup; + } + ret = krb5_ret_times (sp, &creds->times); + if(ret) goto cleanup; + ret = krb5_ret_int8 (sp, &dummy8); + if(ret) goto cleanup; + ret = krb5_ret_int32 (sp, &dummy32); + if(ret) goto cleanup; + /* + * Runtime detect the what is the higher bits of the bitfield. If + * any of the higher bits are set in the input data, it's either a + * new ticket flag (and this code need to be removed), or it's a + * MIT cache (or new Heimdal cache), lets change it to our current + * format. + */ + { + uint32_t mask = 0xffff0000; + creds->flags.i = 0; + creds->flags.b.anonymous = 1; + if (creds->flags.i & mask) + mask = ~mask; + if (dummy32 & mask) + dummy32 = bitswap32(dummy32); + } + creds->flags.i = dummy32; + if (header & SC_ADDRESSES) { + ret = krb5_ret_addrs (sp, &creds->addresses); + if(ret) goto cleanup; + } + if (header & SC_AUTHDATA) { + ret = krb5_ret_authdata (sp, &creds->authdata); + if(ret) goto cleanup; + } + if (header & SC_TICKET) { + ret = krb5_ret_data (sp, &creds->ticket); + if(ret) goto cleanup; + } + if (header & SC_SECOND_TICKET) { + ret = krb5_ret_data (sp, &creds->second_ticket); + if(ret) goto cleanup; + } + +cleanup: + if(ret) { +#if 0 + krb5_free_cred_contents(context, creds); /* XXX */ +#endif + } + return ret; +} |
