/* * 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/json_decode.h" #include <errno.h> #include <float.h> #include <inttypes.h> #include <limits.h> #include <math.h> #include <setjmp.h> #include <stdlib.h> #include <string.h> #include "upb/encode.h" #include "upb/reflection.h" /* Special header, must be included last. */ #include "upb/port_def.inc" jsondec; enum { … }; /* Forward declarations of mutually-recursive functions. */ static void jsondec_wellknown(jsondec* d, upb_Message* msg, const upb_MessageDef* m); static upb_MessageValue jsondec_value(jsondec* d, const upb_FieldDef* f); static void jsondec_wellknownvalue(jsondec* d, upb_Message* msg, const upb_MessageDef* m); static void jsondec_object(jsondec* d, upb_Message* msg, const upb_MessageDef* m); static bool jsondec_streql(upb_StringView str, const char* lit) { … } static bool jsondec_isnullvalue(const upb_FieldDef* f) { … } static bool jsondec_isvalue(const upb_FieldDef* f) { … } UPB_NORETURN static void jsondec_err(jsondec* d, const char* msg) { … } UPB_PRINTF(2, 3) UPB_NORETURN static void jsondec_errf(jsondec* d, const char* fmt, ...) { … } static void jsondec_skipws(jsondec* d) { … } static bool jsondec_tryparsech(jsondec* d, char ch) { … } static void jsondec_parselit(jsondec* d, const char* lit) { … } static void jsondec_wsch(jsondec* d, char ch) { … } static void jsondec_true(jsondec* d) { … } static void jsondec_false(jsondec* d) { … } static void jsondec_null(jsondec* d) { … } static void jsondec_entrysep(jsondec* d) { … } static int jsondec_rawpeek(jsondec* d) { … } /* JSON object/array **********************************************************/ /* These are used like so: * * jsondec_objstart(d); * while (jsondec_objnext(d)) { * ... * } * jsondec_objend(d) */ static int jsondec_peek(jsondec* d) { … } static void jsondec_push(jsondec* d) { … } static bool jsondec_seqnext(jsondec* d, char end_ch) { … } static void jsondec_arrstart(jsondec* d) { … } static void jsondec_arrend(jsondec* d) { … } static bool jsondec_arrnext(jsondec* d) { … } static void jsondec_objstart(jsondec* d) { … } static void jsondec_objend(jsondec* d) { … } static bool jsondec_objnext(jsondec* d) { … } /* JSON number ****************************************************************/ static bool jsondec_tryskipdigits(jsondec* d) { … } static void jsondec_skipdigits(jsondec* d) { … } static double jsondec_number(jsondec* d) { … } /* JSON string ****************************************************************/ static char jsondec_escape(jsondec* d) { … } static uint32_t jsondec_codepoint(jsondec* d) { … } /* Parses a \uXXXX unicode escape (possibly a surrogate pair). */ static size_t jsondec_unicode(jsondec* d, char* out) { … } static void jsondec_resize(jsondec* d, char** buf, char** end, char** buf_end) { … } static upb_StringView jsondec_string(jsondec* d) { … } static void jsondec_skipval(jsondec* d) { … } /* Base64 decoding for bytes fields. ******************************************/ static unsigned int jsondec_base64_tablelookup(const char ch) { … } static char* jsondec_partialbase64(jsondec* d, const char* ptr, const char* end, char* out) { … } static size_t jsondec_base64(jsondec* d, upb_StringView str) { … } /* Low-level integer parsing **************************************************/ /* We use these hand-written routines instead of strto[u]l() because the "long * long" variants aren't in c89. Also our version allows setting a ptr limit. */ static const char* jsondec_buftouint64(jsondec* d, const char* ptr, const char* end, uint64_t* val) { … } static const char* jsondec_buftoint64(jsondec* d, const char* ptr, const char* end, int64_t* val) { … } static uint64_t jsondec_strtouint64(jsondec* d, upb_StringView str) { … } static int64_t jsondec_strtoint64(jsondec* d, upb_StringView str) { … } /* Primitive value types ******************************************************/ /* Parse INT32 or INT64 value. */ static upb_MessageValue jsondec_int(jsondec* d, const upb_FieldDef* f) { … } /* Parse UINT32 or UINT64 value. */ static upb_MessageValue jsondec_uint(jsondec* d, const upb_FieldDef* f) { … } /* Parse DOUBLE or FLOAT value. */ static upb_MessageValue jsondec_double(jsondec* d, const upb_FieldDef* f) { … } /* Parse STRING or BYTES value. */ static upb_MessageValue jsondec_strfield(jsondec* d, const upb_FieldDef* f) { … } static upb_MessageValue jsondec_enum(jsondec* d, const upb_FieldDef* f) { … } static upb_MessageValue jsondec_bool(jsondec* d, const upb_FieldDef* f) { … } /* Composite types (array/message/map) ****************************************/ static void jsondec_array(jsondec* d, upb_Message* msg, const upb_FieldDef* f) { … } static void jsondec_map(jsondec* d, upb_Message* msg, const upb_FieldDef* f) { … } static void jsondec_tomsg(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static upb_MessageValue jsondec_msg(jsondec* d, const upb_FieldDef* f) { … } static void jsondec_field(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static void jsondec_object(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static upb_MessageValue jsondec_value(jsondec* d, const upb_FieldDef* f) { … } /* Well-known types ***********************************************************/ static int jsondec_tsdigits(jsondec* d, const char** ptr, size_t digits, const char* after) { … } static int jsondec_nanos(jsondec* d, const char** ptr, const char* end) { … } /* jsondec_epochdays(1970, 1, 1) == 1970-01-01 == 0. */ int jsondec_epochdays(int y, int m, int d) { … } static int64_t jsondec_unixtime(int y, int m, int d, int h, int min, int s) { … } static void jsondec_timestamp(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static void jsondec_duration(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static void jsondec_listvalue(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static void jsondec_struct(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static void jsondec_wellknownvalue(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static upb_StringView jsondec_mask(jsondec* d, const char* buf, const char* end) { … } static void jsondec_fieldmask(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static void jsondec_anyfield(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static const upb_MessageDef* jsondec_typeurl(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static void jsondec_any(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static void jsondec_wrapper(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } static void jsondec_wellknown(jsondec* d, upb_Message* msg, const upb_MessageDef* m) { … } bool upb_JsonDecode(const char* buf, size_t size, upb_Message* msg, const upb_MessageDef* m, const upb_DefPool* symtab, int options, upb_Arena* arena, upb_Status* status) { … }
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