move out file and memory functions

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@6923 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/krb5/keytab.c

@@ -40,22 +40,12 @@
 
 RCSID("$Id$");
 
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
-
-#define KRB5_KT_VNO_1 1
-#define KRB5_KT_VNO_2 2
-#define KRB5_KT_VNO   KRB5_KT_VNO_2
-
 static struct krb5_keytab_data *kt_types;
 static int num_kt_types;
 
-static krb5_kt_ops fops, mops; /* forward declaration */
-
 krb5_error_code
 krb5_kt_register(krb5_context context,
-		 krb5_kt_ops *ops)
+		 const krb5_kt_ops *ops)
 {
     struct krb5_keytab_data *tmp;
     tmp = realloc(kt_types, (num_kt_types + 1) * sizeof(*kt_types));
@@ -80,9 +70,9 @@ krb5_kt_resolve(krb5_context context,
 
     /* register default set of types */
     if(num_kt_types == 0) {
-	ret = krb5_kt_register(context, &fops);
+	ret = krb5_kt_register(context, &krb5_fkt_ops);
 	if(ret) return ret;
-	ret = krb5_kt_register(context, &mops);
+	ret = krb5_kt_register(context, &krb5_mkt_ops);
 	if(ret) return ret;
     }
     
@@ -190,12 +180,12 @@ krb5_kt_close(krb5_context context,
     return ret;
 }
 
-static krb5_boolean
+krb5_boolean
-kt_compare(krb5_context context,
+krb5_kt_compare(krb5_context context,
-	   krb5_keytab_entry *entry, 
+		krb5_keytab_entry *entry, 
-	   krb5_const_principal principal,
+		krb5_const_principal principal,
-	   krb5_kvno vno,
+		krb5_kvno vno,
-	   krb5_enctype enctype)
+		krb5_enctype enctype)
 {
     if(principal != NULL && 
        !krb5_principal_compare(context, entry->principal, principal))
@@ -227,7 +217,7 @@ krb5_kt_get_entry(krb5_context context,
 
     entry->vno = 0;
     while (krb5_kt_next_entry(context, id, &tmp, &cursor) == 0) {
-	if (kt_compare(context, &tmp, principal, 0, enctype)) {
+	if (krb5_kt_compare(context, &tmp, principal, 0, enctype)) {
 	    if (kvno == tmp.vno) {
 		krb5_kt_copy_entry_contents (context, &tmp, entry);
 		krb5_kt_free_entry (context, &tmp);
@@ -332,174 +322,6 @@ krb5_kt_end_seq_get(krb5_context context,
     return (*id->end_seq_get)(context, id, cursor);
 }
 
-static krb5_error_code
-krb5_kt_ret_data(krb5_storage *sp,
-		 krb5_data *data)
-{
-    int ret;
-    int16_t size;
-    ret = krb5_ret_int16(sp, &size);
-    if(ret)
-	return ret;
-    data->length = size;
-    data->data = malloc(size);
-    if (data->data == NULL)
-	return ENOMEM;
-    ret = sp->fetch(sp, data->data, size);
-    if(ret != size)
-	return (ret < 0)? errno : KRB5_KT_END;
-    return 0;
-}
-
-static krb5_error_code
-krb5_kt_ret_string(krb5_storage *sp,
-		   general_string *data)
-{
-    int ret;
-    int16_t size;
-    ret = krb5_ret_int16(sp, &size);
-    if(ret)
-	return ret;
-    *data = malloc(size + 1);
-    if (*data == NULL)
-	return ENOMEM;
-    ret = sp->fetch(sp, *data, size);
-    (*data)[size] = '\0';
-    if(ret != size)
-	return (ret < 0)? errno : KRB5_KT_END;
-    return 0;
-}
-
-static krb5_error_code
-krb5_kt_ret_principal(krb5_storage *sp,
-		      krb5_principal *princ)
-{
-    int i;
-    int ret;
-    krb5_principal p;
-    int16_t tmp;
-    
-    ALLOC(p, 1);
-    if(p == NULL)
-	return ENOMEM;
-
-    ret = krb5_ret_int16(sp, &tmp);
-    if(ret)
-	return ret;
-    if (sp->flags & KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS)
-	tmp--;
-    p->name.name_string.len = tmp;
-    ret = krb5_kt_ret_string(sp, &p->realm);
-    if(ret) return ret;
-    p->name.name_string.val = calloc(p->name.name_string.len, 
-				     sizeof(*p->name.name_string.val));
-    if(p->name.name_string.val == NULL)
-	return ENOMEM;
-    for(i = 0; i < p->name.name_string.len; i++){
-	ret = krb5_kt_ret_string(sp, p->name.name_string.val + i);
-	if(ret) return ret;
-    }
-    if (krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE))
-	p->name.name_type = KRB5_NT_UNKNOWN;
-    else {
-	int32_t tmp32;
-	ret = krb5_ret_int32(sp, &tmp32);
-	p->name.name_type = tmp32;
-	if (ret)
-	    return ret;
-    }
-    *princ = p;
-    return 0;
-}
-
-static krb5_error_code
-krb5_kt_ret_keyblock(krb5_storage *sp, krb5_keyblock *p)
-{
-    int ret;
-    int16_t tmp;
-
-    ret = krb5_ret_int16(sp, &tmp); /* keytype + etype */
-    if(ret) return ret;
-    p->keytype = tmp;
-    ret = krb5_kt_ret_data(sp, &p->keyvalue);
-    return ret;
-}
-
-static krb5_error_code
-krb5_kt_store_data(krb5_storage *sp,
-		   krb5_data data)
-{
-    int ret;
-    ret = krb5_store_int16(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 KRB5_KT_END;
-    }
-    return 0;
-}
-
-static krb5_error_code
-krb5_kt_store_string(krb5_storage *sp,
-		     general_string data)
-{
-    int ret;
-    size_t len = strlen(data);
-    ret = krb5_store_int16(sp, len);
-    if(ret < 0)
-	return ret;
-    ret = sp->store(sp, data, len);
-    if(ret != len){
-	if(ret < 0)
-	    return errno;
-	return KRB5_KT_END;
-    }
-    return 0;
-}
-
-static krb5_error_code
-krb5_kt_store_keyblock(krb5_storage *sp, 
-		       krb5_keyblock *p)
-{
-    int ret;
-
-    ret = krb5_store_int16(sp, p->keytype); /* keytype + etype */
-    if(ret) return ret;
-    ret = krb5_kt_store_data(sp, p->keyvalue);
-    return ret;
-}
-
-
-static krb5_error_code
-krb5_kt_store_principal(krb5_storage *sp,
-			krb5_principal p)
-{
-    int i;
-    int ret;
-    
-    if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS))
-	ret = krb5_store_int16(sp, p->name.name_string.len + 1);
-    else
-	ret = krb5_store_int16(sp, p->name.name_string.len);
-    if(ret) return ret;
-    ret = krb5_kt_store_string(sp, p->realm);
-    if(ret) return ret;
-    for(i = 0; i < p->name.name_string.len; i++){
-	ret = krb5_kt_store_string(sp, p->name.name_string.val[i]);
-	if(ret) return 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;
-    }
-
-    return 0;
-}
-
 krb5_error_code
 krb5_kt_add_entry(krb5_context context,
 		  krb5_keytab id,
@@ -509,463 +331,3 @@ krb5_kt_add_entry(krb5_context context,
 	return KRB5_KT_NOWRITE;
     return (*id->add)(context, id,entry);
 }
-
-
-/* file operations -------------------------------------------- */
-
-struct fkt_data {
-    char *filename;
-};
-
-static krb5_error_code
-fkt_resolve(krb5_context context, const char *name, krb5_keytab id)
-{
-    struct fkt_data *d;
-    d = malloc(sizeof(*d));
-    if(d == NULL)
-	return ENOMEM;
-    d->filename = strdup(name);
-    if(d->filename == NULL) {
-	free(d);
-	return ENOMEM;
-    }
-    id->data = d;
-    return 0;
-}
-
-static krb5_error_code
-fkt_close(krb5_context context, krb5_keytab id)
-{
-    struct fkt_data *d = id->data;
-    free(d->filename);
-    free(d);
-    return 0;
-}
-
-static krb5_error_code 
-fkt_get_name(krb5_context context, 
-	     krb5_keytab id, 
-	     char *name, 
-	     size_t namesize)
-{
-    /* This function is XXX */
-    struct fkt_data *d = id->data;
-    strcpy_truncate(name, d->filename, namesize);
-    return 0;
-}
-
-static void
-storage_set_flags(krb5_context context, krb5_storage *sp, int vno)
-{
-    int flags = 0;
-    switch(vno) {
-    case KRB5_KT_VNO_1:
-	flags |= KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS;
-	flags |= KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE;
-	flags |= KRB5_STORAGE_HOST_BYTEORDER;
-	break;
-    case KRB5_KT_VNO_2:
-	break;
-    default:
-	krb5_abortx(context, 
-		    "storage_set_flags called with bad vno (%x)", vno);
-    }
-    krb5_storage_set_flags(sp, flags);
-}
-
-static krb5_error_code
-fkt_start_seq_get_int(krb5_context context, 
-		      krb5_keytab id, 
-		      int flags,
-		      krb5_kt_cursor *c)
-{
-    int8_t pvno, tag;
-    krb5_error_code ret;
-    struct fkt_data *d = id->data;
-    
-    c->fd = open (d->filename, flags);
-    if (c->fd < 0)
-	return errno;
-    c->sp = krb5_storage_from_fd(c->fd);
-    ret = krb5_ret_int8(c->sp, &pvno);
-    if(ret) {
-	krb5_storage_free(c->sp);
-	close(c->fd);
-	return ret;
-    }
-    if(pvno != 5) {
-	krb5_storage_free(c->sp);
-	close(c->fd);
-	return KRB5_KEYTAB_BADVNO;
-    }
-    ret = krb5_ret_int8(c->sp, &tag);
-    if (ret) {
-	krb5_storage_free(c->sp);
-	close(c->fd);
-	return ret;
-    }
-    id->version = tag;
-    storage_set_flags(context, c->sp, id->version);
-    return 0;
-}
-
-static krb5_error_code
-fkt_start_seq_get(krb5_context context, 
-		  krb5_keytab id, 
-		  krb5_kt_cursor *c)
-{
-    return fkt_start_seq_get_int(context, id, O_RDONLY | O_BINARY, c);
-}
-
-static krb5_error_code
-fkt_next_entry_int(krb5_context context, 
-		   krb5_keytab id, 
-		   krb5_keytab_entry *entry, 
-		   krb5_kt_cursor *cursor,
-		   off_t *start,
-		   off_t *end)
-{
-    int32_t len;
-    u_int32_t timestamp;
-    int ret;
-    int8_t tmp8;
-    int32_t tmp32;
-    off_t pos;
-
-    pos = cursor->sp->seek(cursor->sp, 0, SEEK_CUR);
-loop:
-    ret = krb5_ret_int32(cursor->sp, &len);
-    if (ret)
-	return ret;
-    if(len < 0) {
-	pos = cursor->sp->seek(cursor->sp, -len, SEEK_CUR);
-	goto loop;
-    }
-    ret = krb5_kt_ret_principal (cursor->sp, &entry->principal);
-    if (ret)
-	goto out;
-    ret = krb5_ret_int32(cursor->sp, &tmp32);
-    timestamp = tmp32;
-    if (ret)
-	goto out;
-    ret = krb5_ret_int8(cursor->sp, &tmp8);
-    if (ret)
-	goto out;
-    entry->vno = tmp8;
-    ret = krb5_kt_ret_keyblock (cursor->sp, &entry->keyblock);
-    if (ret)
-	goto out;
-    if(start) *start = pos;
-    if(end) *end = *start + 4 + len;
- out:
-    cursor->sp->seek(cursor->sp, pos + 4 + len, SEEK_SET);
-    return ret;
-}
-
-static krb5_error_code
-fkt_next_entry(krb5_context context, 
-	       krb5_keytab id, 
-	       krb5_keytab_entry *entry, 
-	       krb5_kt_cursor *cursor)
-{
-    return fkt_next_entry_int(context, id, entry, cursor, NULL, NULL);
-}
-
-static krb5_error_code
-fkt_end_seq_get(krb5_context context, 
-		krb5_keytab id,
-		krb5_kt_cursor *cursor)
-{
-    krb5_storage_free(cursor->sp);
-    close(cursor->fd);
-    return 0;
-}
-
-static krb5_error_code
-fkt_add_entry(krb5_context context,
-	      krb5_keytab id,
-	      krb5_keytab_entry *entry)
-{
-    int ret;
-    int fd;
-    krb5_storage *sp;
-    struct fkt_data *d = id->data;
-    krb5_data keytab;
-    int32_t len;
-    
-    fd = open (d->filename, O_RDWR | O_BINARY);
-    if (fd < 0) {
-	fd = open (d->filename, O_RDWR | O_CREAT | O_BINARY, 0600);
-	if (fd < 0)
-	    return errno;
-	sp = krb5_storage_from_fd(fd);
-	ret = krb5_store_int8(sp, 5);
-	if(ret) {
-	    krb5_storage_free(sp);
-	    close(fd);
-	    return ret;
-	}
-	if(id->version == 0)
-	    id->version = KRB5_KT_VNO;
-	ret = krb5_store_int8 (sp, id->version);
-	if (ret) {
-	    krb5_storage_free(sp);
-	    close(fd);
-	    return ret;
-	}
-	storage_set_flags(context, sp, id->version);
-    } else {
-	int8_t pvno, tag;
-	sp = krb5_storage_from_fd(fd);
-	ret = krb5_ret_int8(sp, &pvno);
-	if(ret) {
-	    krb5_storage_free(sp);
-	    close(fd);
-	    return ret;
-	}
-	if(pvno != 5) {
-	    krb5_storage_free(sp);
-	    close(fd);
-	    return KRB5_KEYTAB_BADVNO;
-	}
-	ret = krb5_ret_int8 (sp, &tag);
-	if (ret) {
-	    krb5_storage_free(sp);
-	    close(fd);
-	    return ret;
-	}
-	id->version = tag;
-	storage_set_flags(context, sp, id->version);
-    }
-
-    {
-	krb5_storage *emem;
-	emem = krb5_storage_emem();
-	if(emem == NULL) {
-	    ret = ENOMEM;
-	    goto out;
-	}
-	ret = krb5_kt_store_principal(emem, entry->principal);
-	if(ret) {
-	    krb5_storage_free(emem);
-	    goto out;
-	}
-	ret = krb5_store_int32 (emem, time(NULL));
-	if(ret) {
-	    krb5_storage_free(emem);
-	    goto out;
-	}
-	ret = krb5_store_int8 (emem, entry->vno);
-	if(ret) {
-	    krb5_storage_free(emem);
-	    goto out;
-	}
-	ret = krb5_kt_store_keyblock (emem, &entry->keyblock);
-	if(ret) {
-	    krb5_storage_free(emem);
-	    goto out;
-	}
-	ret = krb5_storage_to_data(emem, &keytab);
-	krb5_storage_free(emem);
-	if(ret)
-	    goto out;
-    }
-    
-    while(1) {
-	ret = krb5_ret_int32(sp, &len);
-	if(ret == KRB5_CC_END) {
-	    len = keytab.length;
-	    break;
-	}
-	if(len < 0) {
-	    len = -len;
-	    if(len >= keytab.length) {
-		sp->seek(sp, -4, SEEK_CUR);
-		break;
-	    }
-	}
-	sp->seek(sp, len, SEEK_CUR);
-    }
-    ret = krb5_store_int32(sp, len);
-    if(sp->store(sp, keytab.data, keytab.length) < 0)
-	ret = errno;
-    memset(keytab.data, 0, keytab.length);
-    krb5_data_free(&keytab);
- out:
-    krb5_storage_free(sp);
-    close(fd);
-    return ret;
-}
-
-static krb5_error_code
-fkt_remove_entry(krb5_context context,
-		 krb5_keytab id,
-		 krb5_keytab_entry *entry)
-{
-    krb5_keytab_entry e;
-    krb5_kt_cursor cursor;
-    off_t pos_start, pos_end;
-    int found = 0;
-    
-    fkt_start_seq_get_int(context, id, O_RDWR | O_BINARY, &cursor);
-    while(fkt_next_entry_int(context, id, &e, &cursor, 
-			     &pos_start, &pos_end) == 0) {
-	if(kt_compare(context, &e, entry->principal, 
-		      entry->vno, entry->keyblock.keytype)) {
-	    int32_t len;
-	    unsigned char buf[128];
-	    found = 1;
-	    cursor.sp->seek(cursor.sp, pos_start, SEEK_SET);
-	    len = pos_end - pos_start - 4;
-	    krb5_store_int32(cursor.sp, -len);
-	    memset(buf, 0, sizeof(buf));
-	    while(len > 0) {
-		cursor.sp->store(cursor.sp, buf, min(len, sizeof(buf)));
-		len -= min(len, sizeof(buf));
-	    }
-	}
-    }
-    krb5_kt_end_seq_get(context, id, &cursor);
-    if (!found)
-	return KRB5_KT_NOTFOUND;
-    return 0;
-}
-
-static krb5_kt_ops fops = {
-    "FILE",
-    fkt_resolve,
-    fkt_get_name,
-    fkt_close,
-    NULL, /* get */
-    fkt_start_seq_get,
-    fkt_next_entry,
-    fkt_end_seq_get,
-    fkt_add_entry,
-    fkt_remove_entry
-};
-
-
-/* memory operations -------------------------------------------- */
-
-struct mkt_data {
-    krb5_keytab_entry *entries;
-    int num_entries;
-};
-
-static krb5_error_code
-mkt_resolve(krb5_context context, const char *name, krb5_keytab id)
-{
-    struct mkt_data *d;
-    d = malloc(sizeof(*d));
-    if(d == NULL)
-	return ENOMEM;
-    d->entries = NULL;
-    d->num_entries = 0;
-    id->data = d;
-    return 0;
-}
-
-static krb5_error_code
-mkt_close(krb5_context context, krb5_keytab id)
-{
-    struct mkt_data *d = id->data;
-    int i;
-    for(i = 0; i < d->num_entries; i++)
-	krb5_kt_free_entry(context, &d->entries[i]);
-    free(d->entries);
-    free(d);
-    return 0;
-}
-
-static krb5_error_code 
-mkt_get_name(krb5_context context, 
-	     krb5_keytab id, 
-	     char *name, 
-	     size_t namesize)
-{
-    strncpy(name, "", namesize);
-    return 0;
-}
-
-static krb5_error_code
-mkt_start_seq_get(krb5_context context, 
-		  krb5_keytab id, 
-		  krb5_kt_cursor *c)
-{
-    /* XXX */
-    c->fd = 0;
-    return 0;
-}
-
-static krb5_error_code
-mkt_next_entry(krb5_context context, 
-	       krb5_keytab id, 
-	       krb5_keytab_entry *entry, 
-	       krb5_kt_cursor *c)
-{
-    struct mkt_data *d = id->data;
-    if(c->fd >= d->num_entries)
-	return KRB5_KT_END;
-    return krb5_kt_copy_entry_contents(context, &d->entries[c->fd++], entry);
-}
-
-static krb5_error_code
-mkt_end_seq_get(krb5_context context, 
-		krb5_keytab id,
-		krb5_kt_cursor *cursor)
-{
-    return 0;
-}
-
-static krb5_error_code
-mkt_add_entry(krb5_context context,
-	      krb5_keytab id,
-	      krb5_keytab_entry *entry)
-{
-    struct mkt_data *d = id->data;
-    krb5_keytab_entry *tmp;
-    tmp = realloc(d->entries, (d->num_entries + 1) * sizeof(*d->entries));
-    if(tmp == NULL)
-	return ENOMEM;
-    d->entries = tmp;
-    return krb5_kt_copy_entry_contents(context, entry, 
-				       &d->entries[d->num_entries++]);
-}
-
-static krb5_error_code
-mkt_remove_entry(krb5_context context,
-		 krb5_keytab id,
-		 krb5_keytab_entry *entry)
-{
-    struct mkt_data *d = id->data;
-    krb5_keytab_entry *e, *end;
-    
-    /* do this backwards to minimize copying */
-    for(end = d->entries + d->num_entries, e = end - 1; e >= d->entries; e--) {
-	if(kt_compare(context, e, entry->principal, 
-		      entry->vno, entry->keyblock.keytype)) {
-	    krb5_kt_free_entry(context, e);
-	    memmove(e, e + 1, (end - e - 1) * sizeof(*e));
-	    memset(end - 1, 0, sizeof(*end));
-	    d->num_entries--;
-	    end--;
-	}
-    }
-    e = realloc(d->entries, d->num_entries * sizeof(*d->entries));
-    if(e != NULL)
-	d->entries = e;
-    return 0;
-}
-
-static krb5_kt_ops mops = {
-    "MEMORY",
-    mkt_resolve,
-    mkt_get_name,
-    mkt_close,
-    NULL, /* get */
-    mkt_start_seq_get,
-    mkt_next_entry,
-    mkt_end_seq_get,
-    mkt_add_entry,
-    mkt_remove_entry
-};