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-rw-r--r--lib9p/tables.c186
1 files changed, 0 insertions, 186 deletions
diff --git a/lib9p/tables.c b/lib9p/tables.c
deleted file mode 100644
index 271b17b..0000000
--- a/lib9p/tables.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/* lib9p/tables.c - Access tables of version and message information
- *
- * Copyright (C) 2024-2025 Luke T. Shumaker <lukeshu@lukeshu.com>
- * SPDX-License-Identifier: AGPL-3.0-or-later
- */
-
-#include <string.h>
-
-#include <libmisc/endian.h>
-#include <libmisc/log.h> /* for const_byte_str() */
-
-#include "tables.h"
-
-/* bounds checks **************************************************************/
-
-static inline void assert_ver(enum lib9p_version ver) {
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wtype-limits"
- assert(0 <= ver && ver < LIB9P_VER_NUM);
-#pragma GCC diagnostic pop
-}
-
-static inline void assert_typ(enum lib9p_msg_type typ) {
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wtype-limits"
- assert(0 <= typ && typ < 0xFF);
-#pragma GCC diagnostic pop
-}
-
-/* simple lookups *************************************************************/
-
-const char *lib9p_version_str(enum lib9p_version ver) {
- assert_ver(ver);
- return _lib9p_table_ver[ver].name;
-}
-
-uint32_t lib9p_version_min_msg_size(enum lib9p_version ver) {
- assert_ver(ver);
- return _lib9p_table_ver[ver].min_msg_size;
-}
-
-const char *lib9p_msgtype_str(enum lib9p_version ver, enum lib9p_msg_type typ) {
- assert_ver(ver);
- assert_typ(typ);
- return _lib9p_table_msg[ver][typ].name ?: const_byte_str(typ);
-}
-
-lo_interface fmt_formatter lo_box_lib9p_msg_as_fmt_formatter(struct lib9p_ctx *ctx, enum lib9p_msg_type typ, void *body) {
- assert(ctx);
- assert_ver(ctx->version);
- assert_typ(typ);
- assert(_lib9p_table_msg[ctx->version][typ].box_as_fmt_formatter);
- return _lib9p_table_msg[ctx->version][typ].box_as_fmt_formatter(body);
-}
-
-/* main message functions *****************************************************/
-
-static
-ssize_t _lib9p_validate(uint8_t xxx_low_typ_bit,
- const char *xxx_errmsg,
- const struct _lib9p_recv_tentry xxx_table[LIB9P_VER_NUM][0x80],
- struct lib9p_ctx *ctx, uint8_t *net_bytes) {
- assert_ver(ctx->version);
- /* Inspect the first 5 bytes ourselves. */
- uint32_t net_size = uint32le_decode(net_bytes);
- if (net_size < 5)
- return lib9p_error(ctx, LINUX_EBADMSG, "message is impossibly short");
- uint8_t typ = net_bytes[4];
- if (typ % 2 != xxx_low_typ_bit)
- return lib9p_errorf(ctx, LINUX_EOPNOTSUPP, "%s: message_type=%s", xxx_errmsg,
- lib9p_msgtype_str(ctx->version, typ));
- struct _lib9p_recv_tentry tentry = xxx_table[ctx->version][typ/2];
- if (!tentry.validate)
- return lib9p_errorf(ctx, LINUX_EOPNOTSUPP, "unknown message type: %s (protocol_version=%s)",
- lib9p_msgtype_str(ctx->version, typ), lib9p_version_str(ctx->version));
-
- /* Now use the message-type-specific tentry to process the whole thing. */
- return tentry.validate(ctx, net_size, net_bytes);
-}
-
-ssize_t lib9p_Tmsg_validate(struct lib9p_ctx *ctx, uint8_t *net_bytes) {
- return _lib9p_validate(0, "expected a T-message but got an R-message", _lib9p_table_Tmsg_recv,
- ctx, net_bytes);
-}
-
-ssize_t lib9p_Rmsg_validate(struct lib9p_ctx *ctx, uint8_t *net_bytes) {
- return _lib9p_validate(1, "expected an R-message but got a T-message", _lib9p_table_Rmsg_recv,
- ctx, net_bytes);
-}
-
-static
-void _lib9p_unmarshal(const struct _lib9p_recv_tentry xxx_table[LIB9P_VER_NUM][0x80],
- struct lib9p_ctx *ctx, uint8_t *net_bytes,
- enum lib9p_msg_type *ret_typ, void *ret_body) {
- assert_ver(ctx->version);
- enum lib9p_msg_type typ = net_bytes[4];
- *ret_typ = typ;
- struct _lib9p_recv_tentry tentry = xxx_table[ctx->version][typ/2];
-
- tentry.unmarshal(ctx, net_bytes, ret_body);
-}
-
-void lib9p_Tmsg_unmarshal(struct lib9p_ctx *ctx, uint8_t *net_bytes,
- enum lib9p_msg_type *ret_typ, void *ret_body) {
- _lib9p_unmarshal(_lib9p_table_Tmsg_recv,
- ctx, net_bytes, ret_typ, ret_body);
-}
-
-void lib9p_Rmsg_unmarshal(struct lib9p_ctx *ctx, uint8_t *net_bytes,
- enum lib9p_msg_type *ret_typ, void *ret_body) {
- _lib9p_unmarshal(_lib9p_table_Rmsg_recv,
- ctx, net_bytes, ret_typ, ret_body);
-}
-
-static
-bool _lib9p_marshal(const struct _lib9p_send_tentry xxx_table[LIB9P_VER_NUM][0x80],
- struct lib9p_ctx *ctx, enum lib9p_msg_type typ, void *body,
- size_t *ret_iov_cnt, struct iovec *ret_iov, uint8_t *ret_copied) {
- assert_ver(ctx->version);
- assert_typ(typ);
- struct _marshal_ret ret = {
- .net_iov_cnt = 1,
- .net_iov = ret_iov,
- .net_copied_size = 0,
- .net_copied = ret_copied,
- };
-
- struct _lib9p_send_tentry tentry = xxx_table[ctx->version][typ/2];
- bool ret_erred = tentry.marshal(ctx, body, &ret);
- if (ret_iov[ret.net_iov_cnt-1].iov_len == 0)
- ret.net_iov_cnt--;
- *ret_iov_cnt = ret.net_iov_cnt;
- return ret_erred;
-}
-
-bool lib9p_Tmsg_marshal(struct lib9p_ctx *ctx, enum lib9p_msg_type typ, void *body,
- struct lib9p_Tmsg_send_buf *ret) {
- assert(typ % 2 == 0);
- memset(ret, 0, sizeof(*ret));
- return _lib9p_marshal(_lib9p_table_Tmsg_send,
- ctx, typ, body,
- &ret->iov_cnt, ret->iov, ret->copied);
-}
-
-bool lib9p_Rmsg_marshal(struct lib9p_ctx *ctx, enum lib9p_msg_type typ, void *body,
- struct lib9p_Rmsg_send_buf *ret) {
- assert(typ % 2 == 1);
- memset(ret, 0, sizeof(*ret));
- return _lib9p_marshal(_lib9p_table_Rmsg_send,
- ctx, typ, body,
- &ret->iov_cnt, ret->iov, ret->copied);
-}
-
-/* `struct lib9p_stat` helpers ************************************************/
-
-bool lib9p_stat_validate(struct lib9p_ctx *ctx, uint32_t net_size, uint8_t *net_bytes,
- uint32_t *ret_net_size, ssize_t *ret_host_size) {
- ssize_t host_size = _lib9p_stat_validate(ctx, net_size, net_bytes, ret_net_size);
- if (host_size < 0)
- return true;
- if (ret_host_size)
- *ret_host_size = host_size;
- return false;
-}
-
-void lib9p_stat_unmarshal(struct lib9p_ctx *ctx, uint8_t *net_bytes,
- struct lib9p_stat *ret) {
- _lib9p_stat_unmarshal(ctx, net_bytes, ret);
-}
-
-uint32_t lib9p_stat_marshal(struct lib9p_ctx *ctx, uint32_t max_net_size, struct lib9p_stat *obj,
- uint8_t *ret_bytes) {
- struct lib9p_ctx _ctx = *ctx;
- _ctx.max_msg_size = max_net_size;
-
- struct iovec iov = {0};
- struct _marshal_ret ret = {
- .net_iov_cnt = 1,
- .net_iov = &iov,
- .net_copied_size = 0,
- .net_copied = ret_bytes,
- };
- if (_lib9p_stat_marshal(&_ctx, obj, &ret))
- return 0;
- return ret.net_iov[0].iov_len;
-}
generated by cgit v1.2.3-2-g168b (git 2.25.1) at 2025-04-15 08:06:43 +0000