/* * Copyright (c) 2009-2021, Google LLC * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 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. * * Neither the name of Google LLC 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 COPYRIGHT HOLDERS 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 Google LLC 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 "upb/decode.h" #include <setjmp.h> #include <string.h> #include "upb/internal/decode.h" #include "upb/internal/upb.h" #include "upb/upb.h" /* Must be last. */ #include "upb/port_def.inc" /* Maps descriptor type -> elem_size_lg2. */ static const uint8_t desctype_to_elem_size_lg2[] = …; /* Maps descriptor type -> upb map size. */ static const uint8_t desctype_to_mapsize[] = …; static const unsigned FIXED32_OK_MASK = …; static const unsigned FIXED64_OK_MASK = …; /* Three fake field types for MessageSet. */ #define TYPE_MSGSET_ITEM … #define TYPE_COUNT … /* Op: an action to be performed for a wire-type/field-type combination. */ #define OP_UNKNOWN … #define OP_MSGSET_ITEM … #define OP_SCALAR_LG2 … #define OP_ENUM … #define OP_STRING … #define OP_BYTES … #define OP_SUBMSG … /* Scalar fields use only ops above. Repeated fields can use any op. */ #define OP_FIXPCK_LG2 … #define OP_VARPCK_LG2 … #define OP_PACKED_ENUM … static const int8_t varint_ops[] = …; static const int8_t delim_ops[] = …; wireval; static const char* decode_msg(upb_Decoder* d, const char* ptr, upb_Message* msg, const upb_MiniTable* layout); UPB_NORETURN static void* decode_err(upb_Decoder* d, upb_DecodeStatus status) { … } const char* fastdecode_err(upb_Decoder* d, int status) { … } static void decode_verifyutf8(upb_Decoder* d, const char* buf, int len) { … } static bool decode_reserve(upb_Decoder* d, upb_Array* arr, size_t elem) { … } decode_vret; UPB_NOINLINE static decode_vret decode_longvarint64(const char* ptr, uint64_t val) { … } UPB_FORCEINLINE static const char* decode_varint64(upb_Decoder* d, const char* ptr, uint64_t* val) { … } UPB_FORCEINLINE static const char* decode_tag(upb_Decoder* d, const char* ptr, uint32_t* val) { … } UPB_FORCEINLINE static const char* upb_Decoder_DecodeSize(upb_Decoder* d, const char* ptr, uint32_t* size) { … } static void decode_munge_int32(wireval* val) { … } static void decode_munge(int type, wireval* val) { … } static upb_Message* decode_newsubmsg(upb_Decoder* d, const upb_MiniTable_Sub* subs, const upb_MiniTable_Field* field) { … } UPB_NOINLINE const char* decode_isdonefallback(upb_Decoder* d, const char* ptr, int overrun) { … } static const char* decode_readstr(upb_Decoder* d, const char* ptr, int size, upb_StringView* str) { … } UPB_FORCEINLINE static const char* decode_tosubmsg2(upb_Decoder* d, const char* ptr, upb_Message* submsg, const upb_MiniTable* subl, int size) { … } UPB_FORCEINLINE static const char* decode_tosubmsg(upb_Decoder* d, const char* ptr, upb_Message* submsg, const upb_MiniTable_Sub* subs, const upb_MiniTable_Field* field, int size) { … } UPB_FORCEINLINE static const char* decode_group(upb_Decoder* d, const char* ptr, upb_Message* submsg, const upb_MiniTable* subl, uint32_t number) { … } UPB_FORCEINLINE static const char* decode_togroup(upb_Decoder* d, const char* ptr, upb_Message* submsg, const upb_MiniTable_Sub* subs, const upb_MiniTable_Field* field) { … } static char* upb_Decoder_EncodeVarint32(uint32_t val, char* ptr) { … } static void upb_Decode_AddUnknownVarints(upb_Decoder* d, upb_Message* msg, uint32_t val1, uint32_t val2) { … } UPB_NOINLINE static bool decode_checkenum_slow(upb_Decoder* d, const char* ptr, upb_Message* msg, const upb_MiniTable_Enum* e, const upb_MiniTable_Field* field, uint32_t v) { … } UPB_FORCEINLINE static bool decode_checkenum(upb_Decoder* d, const char* ptr, upb_Message* msg, const upb_MiniTable_Enum* e, const upb_MiniTable_Field* field, wireval* val) { … } UPB_NOINLINE static const char* decode_enum_toarray(upb_Decoder* d, const char* ptr, upb_Message* msg, upb_Array* arr, const upb_MiniTable_Sub* subs, const upb_MiniTable_Field* field, wireval* val) { … } UPB_FORCEINLINE static const char* decode_fixed_packed(upb_Decoder* d, const char* ptr, upb_Array* arr, wireval* val, const upb_MiniTable_Field* field, int lg2) { … } UPB_FORCEINLINE static const char* decode_varint_packed(upb_Decoder* d, const char* ptr, upb_Array* arr, wireval* val, const upb_MiniTable_Field* field, int lg2) { … } UPB_NOINLINE static const char* decode_enum_packed(upb_Decoder* d, const char* ptr, upb_Message* msg, upb_Array* arr, const upb_MiniTable_Sub* subs, const upb_MiniTable_Field* field, wireval* val) { … } static const char* decode_toarray(upb_Decoder* d, const char* ptr, upb_Message* msg, const upb_MiniTable_Sub* subs, const upb_MiniTable_Field* field, wireval* val, int op) { … } static const char* decode_tomap(upb_Decoder* d, const char* ptr, upb_Message* msg, const upb_MiniTable_Sub* subs, const upb_MiniTable_Field* field, wireval* val) { … } static const char* decode_tomsg(upb_Decoder* d, const char* ptr, upb_Message* msg, const upb_MiniTable_Sub* subs, const upb_MiniTable_Field* field, wireval* val, int op) { … } UPB_NOINLINE const char* decode_checkrequired(upb_Decoder* d, const char* ptr, const upb_Message* msg, const upb_MiniTable* l) { … } UPB_FORCEINLINE static bool decode_tryfastdispatch(upb_Decoder* d, const char** ptr, upb_Message* msg, const upb_MiniTable* layout) { … } static const char* upb_Decoder_SkipField(upb_Decoder* d, const char* ptr, uint32_t tag) { … } enum { … }; static void upb_Decoder_AddKnownMessageSetItem( upb_Decoder* d, upb_Message* msg, const upb_MiniTable_Extension* item_mt, const char* data, uint32_t size) { … } static void upb_Decoder_AddUnknownMessageSetItem(upb_Decoder* d, upb_Message* msg, uint32_t type_id, const char* message_data, uint32_t message_size) { … } static void upb_Decoder_AddMessageSetItem(upb_Decoder* d, upb_Message* msg, const upb_MiniTable* layout, uint32_t type_id, const char* data, uint32_t size) { … } static const char* upb_Decoder_DecodeMessageSetItem( upb_Decoder* d, const char* ptr, upb_Message* msg, const upb_MiniTable* layout) { … } static const upb_MiniTable_Field* decode_findfield(upb_Decoder* d, const upb_MiniTable* l, uint32_t field_number, int* last_field_index) { … } UPB_FORCEINLINE static const char* decode_wireval(upb_Decoder* d, const char* ptr, const upb_MiniTable_Field* field, int wire_type, wireval* val, int* op) { … } UPB_FORCEINLINE static const char* decode_known(upb_Decoder* d, const char* ptr, upb_Message* msg, const upb_MiniTable* layout, const upb_MiniTable_Field* field, int op, wireval* val) { … } static const char* decode_reverse_skip_varint(const char* ptr, uint32_t val) { … } static const char* decode_unknown(upb_Decoder* d, const char* ptr, upb_Message* msg, int field_number, int wire_type, wireval val) { … } UPB_NOINLINE static const char* decode_msg(upb_Decoder* d, const char* ptr, upb_Message* msg, const upb_MiniTable* layout) { … } const char* fastdecode_generic(struct upb_Decoder* d, const char* ptr, upb_Message* msg, intptr_t table, uint64_t hasbits, uint64_t data) { … } static upb_DecodeStatus decode_top(struct upb_Decoder* d, const char* buf, void* msg, const upb_MiniTable* l) { … } upb_DecodeStatus upb_Decode(const char* buf, size_t size, void* msg, const upb_MiniTable* l, const upb_ExtensionRegistry* extreg, int options, upb_Arena* arena) { … } #undef OP_UNKNOWN #undef OP_SKIP #undef OP_SCALAR_LG2 #undef OP_FIXPCK_LG2 #undef OP_VARPCK_LG2 #undef OP_STRING #undef OP_BYTES #undef OP_SUBMSG
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