diff options
Diffstat (limited to 'navit/maptool/google/protobuf-c/protobuf-c.c')
| -rw-r--r-- | navit/maptool/google/protobuf-c/protobuf-c.c | 2603 |
1 files changed, 0 insertions, 2603 deletions
diff --git a/navit/maptool/google/protobuf-c/protobuf-c.c b/navit/maptool/google/protobuf-c/protobuf-c.c deleted file mode 100644 index 7cb727bf9..000000000 --- a/navit/maptool/google/protobuf-c/protobuf-c.c +++ /dev/null @@ -1,2603 +0,0 @@ -/* --- protobuf-c.c: public protobuf c runtime implementation --- */ - -/* - * Copyright 2008, Dave Benson. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with - * the License. You may obtain a copy of the License - * at http://www.apache.org/licenses/LICENSE-2.0 Unless - * required by applicable law or agreed to in writing, - * software distributed under the License is distributed on - * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - */ - -/* TODO items: - - * 64-BIT OPTIMIZATION: certain implementations use 32-bit math even on 64-bit platforms - (uint64_size, uint64_pack, parse_uint64) - - * get_packed_size and pack seem to use type-prefixed names, - whereas parse uses type-suffixed names. pick one and stick with it. - Decision: go with type-suffixed, since the type (or its instance) - is typically the object of the verb. - NOTE: perhaps the "parse" methods should be reanemd to "unpack" - at the same time. (this only affects internal (static) functions) - - * use TRUE and FALSE instead of 1 and 0 as appropriate - - * use size_t consistently - */ - -#include <stdio.h> /* for occasional printf()s */ -#include <stdlib.h> /* for abort(), malloc() etc */ -#include <string.h> /* for strlen(), memcpy(), memmove() */ - -#ifndef PRINT_UNPACK_ERRORS -#define PRINT_UNPACK_ERRORS 1 -#endif - -#include "protobuf-c.h" - -#define MAX_UINT64_ENCODED_SIZE 10 - -/* convenience macros */ -#define TMPALLOC(allocator, size) ((allocator)->tmp_alloc ((allocator)->allocator_data, (size))) -#define FREE(allocator, ptr) \ - do { if ((ptr) != NULL) ((allocator)->free ((allocator)->allocator_data, (ptr))); } while(0) -#define UNALIGNED_ALLOC(allocator, size) ALLOC (allocator, size) /* placeholder */ -#define STRUCT_MEMBER_P(struct_p, struct_offset) \ - ((void *) ((uint8_t*) (struct_p) + (struct_offset))) -#define STRUCT_MEMBER(member_type, struct_p, struct_offset) \ - (*(member_type*) STRUCT_MEMBER_P ((struct_p), (struct_offset))) -#define STRUCT_MEMBER_PTR(member_type, struct_p, struct_offset) \ - ((member_type*) STRUCT_MEMBER_P ((struct_p), (struct_offset))) -#define TRUE 1 -#define FALSE 0 - -static void -alloc_failed_warning (unsigned size, const char *filename, unsigned line) -{ - fprintf (stderr, - "WARNING: out-of-memory allocating a block of size %u (%s:%u)\n", - size, filename, line); -} - -/* Try to allocate memory, running some special code if it fails. */ -#define DO_ALLOC(dst, allocator, size, fail_code) \ -{ size_t da__allocation_size = (size); \ - if (da__allocation_size == 0) \ - dst = NULL; \ - else if ((dst=((allocator)->alloc ((allocator)->allocator_data, \ - da__allocation_size))) == NULL) \ - { \ - alloc_failed_warning (da__allocation_size, __FILE__, __LINE__); \ - fail_code; \ - } \ -} -#define DO_UNALIGNED_ALLOC DO_ALLOC /* placeholder */ - - - -#define ASSERT_IS_ENUM_DESCRIPTOR(desc) \ - assert((desc)->magic == PROTOBUF_C_ENUM_DESCRIPTOR_MAGIC) -#define ASSERT_IS_MESSAGE_DESCRIPTOR(desc) \ - assert((desc)->magic == PROTOBUF_C_MESSAGE_DESCRIPTOR_MAGIC) -#define ASSERT_IS_MESSAGE(message) \ - ASSERT_IS_MESSAGE_DESCRIPTOR((message)->descriptor) -#define ASSERT_IS_SERVICE_DESCRIPTOR(desc) \ - assert((desc)->magic == PROTOBUF_C_SERVICE_DESCRIPTOR_MAGIC) - -/* --- allocator --- */ - -static void protobuf_c_out_of_memory_default (void) -{ - fprintf (stderr, "Out Of Memory!!!\n"); - abort (); -} -void (*protobuf_c_out_of_memory) (void) = protobuf_c_out_of_memory_default; - -static void *system_alloc(void *allocator_data, size_t size) -{ - void *rv; - (void) allocator_data; - if (size == 0) - return NULL; - rv = malloc (size); - if (rv == NULL) - protobuf_c_out_of_memory (); - return rv; -} - -static void system_free (void *allocator_data, void *data) -{ - (void) allocator_data; - if (data) - free (data); -} - -/* Some users may configure the default allocator; - providing your own allocator to unpack() is prefered. - this allocator is still used for packing nested messages. */ -ProtobufCAllocator protobuf_c_default_allocator = -{ - system_alloc, - system_free, - NULL, - 8192, - NULL -}; - -/* Users should NOT modify this structure, - but it's difficult to prevent. - - please modify protobuf_c_default_allocator instead. */ -ProtobufCAllocator protobuf_c_system_allocator = -{ - system_alloc, - system_free, - NULL, - 8192, - NULL -}; - -/* === buffer-simple === */ -void -protobuf_c_buffer_simple_append (ProtobufCBuffer *buffer, - size_t len, - const uint8_t *data) -{ - ProtobufCBufferSimple *simp = (ProtobufCBufferSimple *) buffer; - size_t new_len = simp->len + len; - if (new_len > simp->alloced) - { - size_t new_alloced = simp->alloced * 2; - uint8_t *new_data; - while (new_alloced < new_len) - new_alloced += new_alloced; - DO_ALLOC (new_data, &protobuf_c_default_allocator, new_alloced, return); - memcpy (new_data, simp->data, simp->len); - if (simp->must_free_data) - FREE (&protobuf_c_default_allocator, simp->data); - else - simp->must_free_data = 1; - simp->data = new_data; - simp->alloced = new_alloced; - } - memcpy (simp->data + simp->len, data, len); - simp->len = new_len; -} - -/* === get_packed_size() === */ - -/* Return the number of bytes required to store the - tag for the field (which includes 3 bits for - the wire-type, and a single bit that denotes the end-of-tag. */ -static inline size_t -get_tag_size (unsigned number) -{ - if (number < (1<<4)) - return 1; - else if (number < (1<<11)) - return 2; - else if (number < (1<<18)) - return 3; - else if (number < (1<<25)) - return 4; - else - return 5; -} - -/* Return the number of bytes required to store - a variable-length unsigned integer that fits in 32-bit uint - in base-128 encoding. */ -static inline size_t -uint32_size (uint32_t v) -{ - if (v < (1<<7)) - return 1; - else if (v < (1<<14)) - return 2; - else if (v < (1<<21)) - return 3; - else if (v < (1<<28)) - return 4; - else - return 5; -} -/* Return the number of bytes required to store - a variable-length signed integer that fits in 32-bit int - in base-128 encoding. */ -static inline size_t -int32_size (int32_t v) -{ - if (v < 0) - return 10; - else if (v < (1<<7)) - return 1; - else if (v < (1<<14)) - return 2; - else if (v < (1<<21)) - return 3; - else if (v < (1<<28)) - return 4; - else - return 5; -} -/* return the zigzag-encoded 32-bit unsigned int from a 32-bit signed int */ -static inline uint32_t -zigzag32 (int32_t v) -{ - if (v < 0) - return ((uint32_t)(-v)) * 2 - 1; - else - return v * 2; -} -/* Return the number of bytes required to store - a variable-length signed integer that fits in 32-bit int, - converted to unsigned via the zig-zag algorithm, - then packed using base-128 encoding. */ -static inline size_t -sint32_size (int32_t v) -{ - return uint32_size(zigzag32(v)); -} - -/* Return the number of bytes required to store - a variable-length unsigned integer that fits in 64-bit uint - in base-128 encoding. */ -static inline size_t -uint64_size (uint64_t v) -{ - uint32_t upper_v = (v>>32); - if (upper_v == 0) - return uint32_size ((uint32_t)v); - else if (upper_v < (1<<3)) - return 5; - else if (upper_v < (1<<10)) - return 6; - else if (upper_v < (1<<17)) - return 7; - else if (upper_v < (1<<24)) - return 8; - else if (upper_v < (1U<<31)) - return 9; - else - return 10; -} - -/* return the zigzag-encoded 64-bit unsigned int from a 64-bit signed int */ -static inline uint64_t -zigzag64 (int64_t v) -{ - if (v < 0) - return ((uint64_t)(-v)) * 2 - 1; - else - return v * 2; -} - -/* Return the number of bytes required to store - a variable-length signed integer that fits in 64-bit int, - converted to unsigned via the zig-zag algorithm, - then packed using base-128 encoding. */ -static inline size_t -sint64_size (int64_t v) -{ - return uint64_size(zigzag64(v)); -} - -/* Get serialized size of a single field in the message, - including the space needed by the identifying tag. */ -static size_t -required_field_get_packed_size (const ProtobufCFieldDescriptor *field, - const void *member) -{ - size_t rv = get_tag_size (field->id); - switch (field->type) - { - case PROTOBUF_C_TYPE_SINT32: - return rv + sint32_size (*(const int32_t *) member); - case PROTOBUF_C_TYPE_INT32: - return rv + int32_size (*(const uint32_t *) member); - case PROTOBUF_C_TYPE_UINT32: - return rv + uint32_size (*(const uint32_t *) member); - case PROTOBUF_C_TYPE_SINT64: - return rv + sint64_size (*(const int64_t *) member); - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - return rv + uint64_size (*(const uint64_t *) member); - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - return rv + 4; - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - return rv + 8; - case PROTOBUF_C_TYPE_BOOL: - return rv + 1; - case PROTOBUF_C_TYPE_FLOAT: - return rv + 4; - case PROTOBUF_C_TYPE_DOUBLE: - return rv + 8; - case PROTOBUF_C_TYPE_ENUM: - // TODO: is this correct for negative-valued enums? - return rv + uint32_size (*(const uint32_t *) member); - case PROTOBUF_C_TYPE_STRING: - { - const char *str = *(char * const *) member; - size_t len = str ? strlen (str) : 0; - return rv + uint32_size (len) + len; - } - case PROTOBUF_C_TYPE_BYTES: - { - size_t len = ((const ProtobufCBinaryData*) member)->len; - return rv + uint32_size (len) + len; - } - //case PROTOBUF_C_TYPE_GROUP: - case PROTOBUF_C_TYPE_MESSAGE: - { - const ProtobufCMessage *msg = * (ProtobufCMessage * const *) member; - size_t subrv = msg ? protobuf_c_message_get_packed_size (msg) : 0; - return rv + uint32_size (subrv) + subrv; - } - } - PROTOBUF_C_ASSERT_NOT_REACHED (); - return 0; -} - -/* Get serialized size of a single optional field in the message, - including the space needed by the identifying tag. - Returns 0 if the optional field isn't set. */ -static size_t -optional_field_get_packed_size (const ProtobufCFieldDescriptor *field, - const protobuf_c_boolean *has, - const void *member) -{ - if (field->type == PROTOBUF_C_TYPE_MESSAGE - || field->type == PROTOBUF_C_TYPE_STRING) - { - const void *ptr = * (const void * const *) member; - if (ptr == NULL - || ptr == field->default_value) - return 0; - } - else - { - if (!*has) - return 0; - } - return required_field_get_packed_size (field, member); -} - -/* Get serialized size of a repeated field in the message, - which may consist of any number of values (including 0). - Includes the space needed by the identifying tags (as needed). */ -static size_t -repeated_field_get_packed_size (const ProtobufCFieldDescriptor *field, - size_t count, - const void *member) -{ - size_t header_size; - size_t rv = 0; - unsigned i; - void *array = * (void * const *) member; - if (count == 0) - return 0; - header_size = get_tag_size (field->id); - if (!field->packed) - header_size *= count; - switch (field->type) - { - case PROTOBUF_C_TYPE_SINT32: - for (i = 0; i < count; i++) - rv += sint32_size (((int32_t*)array)[i]); - break; - case PROTOBUF_C_TYPE_INT32: - for (i = 0; i < count; i++) - rv += int32_size (((uint32_t*)array)[i]); - break; - case PROTOBUF_C_TYPE_UINT32: - case PROTOBUF_C_TYPE_ENUM: - for (i = 0; i < count; i++) - rv += uint32_size (((uint32_t*)array)[i]); - break; - case PROTOBUF_C_TYPE_SINT64: - for (i = 0; i < count; i++) - rv += sint64_size (((int64_t*)array)[i]); - break; - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - for (i = 0; i < count; i++) - rv += uint64_size (((uint64_t*)array)[i]); - break; - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - rv += 4 * count; - break; - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - rv += 8 * count; - break; - case PROTOBUF_C_TYPE_BOOL: - rv += count; - break; - case PROTOBUF_C_TYPE_STRING: - for (i = 0; i < count; i++) - { - size_t len = strlen (((char**) array)[i]); - rv += uint32_size (len) + len; - } - break; - - case PROTOBUF_C_TYPE_BYTES: - for (i = 0; i < count; i++) - { - size_t len = ((ProtobufCBinaryData*) array)[i].len; - rv += uint32_size (len) + len; - } - break; - case PROTOBUF_C_TYPE_MESSAGE: - for (i = 0; i < count; i++) - { - size_t len = protobuf_c_message_get_packed_size (((ProtobufCMessage **) array)[i]); - rv += uint32_size (len) + len; - } - break; - //case PROTOBUF_C_TYPE_GROUP: // NOT SUPPORTED - } - if (field->packed) - header_size += uint32_size (rv); - return header_size + rv; -} - -/* Get the packed size of a unknown field (meaning one that - is passed through mostly uninterpreted... this is done - for forward compatibilty with the addition of new fields). */ -static inline size_t -unknown_field_get_packed_size (const ProtobufCMessageUnknownField *field) -{ - return get_tag_size (field->tag) + field->len; -} - -/* Get the number of bytes that the message will occupy once serialized. */ -size_t -protobuf_c_message_get_packed_size(const ProtobufCMessage *message) -{ - unsigned i; - size_t rv = 0; - ASSERT_IS_MESSAGE (message); - for (i = 0; i < message->descriptor->n_fields; i++) - { - const ProtobufCFieldDescriptor *field = message->descriptor->fields + i; - const void *member = ((const char *) message) + field->offset; - const void *qmember = ((const char *) message) + field->quantifier_offset; - - if (field->label == PROTOBUF_C_LABEL_REQUIRED) - rv += required_field_get_packed_size (field, member); - else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) - rv += optional_field_get_packed_size (field, qmember, member); - else - rv += repeated_field_get_packed_size (field, * (const size_t *) qmember, member); - } - for (i = 0; i < message->n_unknown_fields; i++) - rv += unknown_field_get_packed_size (&message->unknown_fields[i]); - return rv; -} -/* === pack() === */ -/* Pack an unsigned 32-bit integer in base-128 encoding, and return the number of bytes needed: - this will be 5 or less. */ -static inline size_t -uint32_pack (uint32_t value, uint8_t *out) -{ - unsigned rv = 0; - if (value >= 0x80) - { - out[rv++] = value | 0x80; - value >>= 7; - if (value >= 0x80) - { - out[rv++] = value | 0x80; - value >>= 7; - if (value >= 0x80) - { - out[rv++] = value | 0x80; - value >>= 7; - if (value >= 0x80) - { - out[rv++] = value | 0x80; - value >>= 7; - } - } - } - } - /* assert: value<128 */ - out[rv++] = value; - return rv; -} - -/* Pack a 32-bit signed integer, returning the number of bytes needed. - Negative numbers are packed as twos-complement 64-bit integers. */ -static inline size_t -int32_pack (int32_t value, uint8_t *out) -{ - if (value < 0) - { - out[0] = value | 0x80; - out[1] = (value>>7) | 0x80; - out[2] = (value>>14) | 0x80; - out[3] = (value>>21) | 0x80; - out[4] = (value>>28) | 0x80; - out[5] = out[6] = out[7] = out[8] = 0xff; - out[9] = 0x01; - return 10; - } - else - return uint32_pack (value, out); -} - -/* Pack a 32-bit integer in zigwag encoding. */ -static inline size_t -sint32_pack (int32_t value, uint8_t *out) -{ - return uint32_pack (zigzag32 (value), out); -} - -/* Pack a 64-bit unsigned integer that fits in a 64-bit uint, - using base-128 encoding. */ -static size_t -uint64_pack (uint64_t value, uint8_t *out) -{ - uint32_t hi = value>>32; - uint32_t lo = value; - unsigned rv; - if (hi == 0) - return uint32_pack ((uint32_t)lo, out); - out[0] = (lo) | 0x80; - out[1] = (lo>>7) | 0x80; - out[2] = (lo>>14) | 0x80; - out[3] = (lo>>21) | 0x80; - if (hi < 8) - { - out[4] = (hi<<4) | (lo>>28); - return 5; - } - else - { - out[4] = ((hi&7)<<4) | (lo>>28) | 0x80; - hi >>= 3; - } - rv = 5; - while (hi >= 128) - { - out[rv++] = hi | 0x80; - hi >>= 7; - } - out[rv++] = hi; - return rv; -} - -/* Pack a 64-bit signed integer in zigzan encoding, - return the size of the packed output. - (Max returned value is 10) */ -static inline size_t -sint64_pack (int64_t value, uint8_t *out) -{ - return uint64_pack (zigzag64 (value), out); -} - -/* Pack a 32-bit value, little-endian. - Used for fixed32, sfixed32, float) */ -static inline size_t -fixed32_pack (uint32_t value, uint8_t *out) -{ -#ifdef IS_LITTLE_ENDIAN - memcpy (out, &value, 4); -#else - out[0] = value; - out[1] = value>>8; - out[2] = value>>16; - out[3] = value>>24; -#endif - return 4; -} - -/* Pack a 64-bit fixed-length value. - (Used for fixed64, sfixed64, double) */ -/* XXX: the big-endian impl is really only good for 32-bit machines, - a 64-bit version would be appreciated, plus a way - to decide to use 64-bit math where convenient. */ -static inline size_t -fixed64_pack (uint64_t value, uint8_t *out) -{ -#ifdef IS_LITTLE_ENDIAN - memcpy (out, &value, 8); -#else - fixed32_pack (value, out); - fixed32_pack (value>>32, out+4); -#endif - return 8; -} - - -/* Pack a boolean as 0 or 1, even though the protobuf_c_boolean - can really assume any integer value. */ -/* XXX: perhaps on some platforms "*out = !!value" would be - a better impl, b/c that is idiotmatic c++ in some stl impls. */ -static inline size_t -boolean_pack (protobuf_c_boolean value, uint8_t *out) -{ - *out = value ? 1 : 0; - return 1; -} - -/* Pack a length-prefixed string. - The input string is NUL-terminated. - - The NULL pointer is treated as an empty string. - This isn't really necessary, but it allows people - to leave required strings blank. - (See Issue 13 in the bug tracker for a - little more explanation). - */ -static inline size_t -string_pack (const char * str, uint8_t *out) -{ - if (str == NULL) - { - out[0] = 0; - return 1; - } - else - { - size_t len = strlen (str); - size_t rv = uint32_pack (len, out); - memcpy (out + rv, str, len); - return rv + len; - } -} - -static inline size_t -binary_data_pack (const ProtobufCBinaryData *bd, uint8_t *out) -{ - size_t len = bd->len; - size_t rv = uint32_pack (len, out); - memcpy (out + rv, bd->data, len); - return rv + len; -} - -static inline size_t -prefixed_message_pack (const ProtobufCMessage *message, uint8_t *out) -{ - if (message == NULL) - { - out[0] = 0; - return 1; - } - else - { - size_t rv = protobuf_c_message_pack (message, out + 1); - uint32_t rv_packed_size = uint32_size (rv); - if (rv_packed_size != 1) - memmove (out + rv_packed_size, out + 1, rv); - return uint32_pack (rv, out) + rv; - } -} - -/* wire-type will be added in required_field_pack() */ -/* XXX: just call uint64_pack on 64-bit platforms. */ -static size_t -tag_pack (uint32_t id, uint8_t *out) -{ - if (id < (1<<(32-3))) - return uint32_pack (id<<3, out); - else - return uint64_pack (((uint64_t)id) << 3, out); -} - -static size_t -required_field_pack (const ProtobufCFieldDescriptor *field, - const void *member, - uint8_t *out) -{ - size_t rv = tag_pack (field->id, out); - switch (field->type) - { - case PROTOBUF_C_TYPE_SINT32: - out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - return rv + sint32_pack (*(const int32_t *) member, out + rv); - case PROTOBUF_C_TYPE_INT32: - out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - return rv + int32_pack (*(const uint32_t *) member, out + rv); - case PROTOBUF_C_TYPE_UINT32: - case PROTOBUF_C_TYPE_ENUM: - out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - return rv + uint32_pack (*(const uint32_t *) member, out + rv); - case PROTOBUF_C_TYPE_SINT64: - out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - return rv + sint64_pack (*(const int64_t *) member, out + rv); - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - return rv + uint64_pack (*(const uint64_t *) member, out + rv); - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - out[0] |= PROTOBUF_C_WIRE_TYPE_32BIT; - return rv + fixed32_pack (*(const uint32_t *) member, out + rv); - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - out[0] |= PROTOBUF_C_WIRE_TYPE_64BIT; - return rv + fixed64_pack (*(const uint64_t *) member, out + rv); - case PROTOBUF_C_TYPE_BOOL: - out[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - return rv + boolean_pack (*(const protobuf_c_boolean *) member, out + rv); - case PROTOBUF_C_TYPE_STRING: - { - out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; - return rv + string_pack (*(char * const *) member, out + rv); - } - - case PROTOBUF_C_TYPE_BYTES: - { - const ProtobufCBinaryData * bd = ((const ProtobufCBinaryData*) member); - out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; - return rv + binary_data_pack (bd, out + rv); - } - //case PROTOBUF_C_TYPE_GROUP: // NOT SUPPORTED - case PROTOBUF_C_TYPE_MESSAGE: - { - out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; - return rv + prefixed_message_pack (*(ProtobufCMessage * const *) member, - out + rv); - } - } - PROTOBUF_C_ASSERT_NOT_REACHED (); - return 0; -} -static size_t -optional_field_pack (const ProtobufCFieldDescriptor *field, - const protobuf_c_boolean *has, - const void *member, - uint8_t *out) -{ - if (field->type == PROTOBUF_C_TYPE_MESSAGE - || field->type == PROTOBUF_C_TYPE_STRING) - { - const void *ptr = * (const void * const *) member; - if (ptr == NULL - || ptr == field->default_value) - return 0; - } - else - { - if (!*has) - return 0; - } - return required_field_pack (field, member, out); -} - -/* TODO: implement as a table lookup */ -static inline size_t -sizeof_elt_in_repeated_array (ProtobufCType type) -{ - switch (type) - { - case PROTOBUF_C_TYPE_SINT32: - case PROTOBUF_C_TYPE_INT32: - case PROTOBUF_C_TYPE_UINT32: - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - case PROTOBUF_C_TYPE_ENUM: - return 4; - case PROTOBUF_C_TYPE_SINT64: - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - return 8; - case PROTOBUF_C_TYPE_BOOL: - return sizeof (protobuf_c_boolean); - case PROTOBUF_C_TYPE_STRING: - case PROTOBUF_C_TYPE_MESSAGE: - return sizeof (void *); - case PROTOBUF_C_TYPE_BYTES: - return sizeof (ProtobufCBinaryData); - } - PROTOBUF_C_ASSERT_NOT_REACHED (); - return 0; -} - -static void -copy_to_little_endian_32 (void *out, const void *in, unsigned N) -{ -#ifdef IS_LITTLE_ENDIAN - memcpy (out, in, N * 4); -#else - unsigned i; - const uint32_t *ini = in; - for (i = 0; i < N; i++) - fixed32_pack (ini[i], (uint8_t*)out + 4*i); -#endif -} -static void -copy_to_little_endian_64 (void *out, const void *in, unsigned N) -{ -#ifdef IS_LITTLE_ENDIAN - memcpy (out, in, N * 8); -#else - unsigned i; - const uint64_t *ini = in; - for (i = 0; i < N; i++) - fixed64_pack (ini[i], (uint8_t*)out + 8*i); -#endif -} - -static unsigned -get_type_min_size (ProtobufCType type) -{ - if (type == PROTOBUF_C_TYPE_SFIXED32 - || type == PROTOBUF_C_TYPE_FIXED32 - || type == PROTOBUF_C_TYPE_FLOAT) - return 4; - if (type == PROTOBUF_C_TYPE_SFIXED64 - || type == PROTOBUF_C_TYPE_FIXED64 - || type == PROTOBUF_C_TYPE_DOUBLE) - return 8; - return 1; -} - -static size_t -repeated_field_pack (const ProtobufCFieldDescriptor *field, - size_t count, - const void *member, - uint8_t *out) -{ - char *array = * (char * const *) member; - unsigned i; - if (field->packed) - { - unsigned header_len; - unsigned len_start; - unsigned min_length; - unsigned payload_len; - unsigned length_size_min; - unsigned actual_length_size; - uint8_t *payload_at; - if (count == 0) - return 0; - header_len = tag_pack (field->id, out); - out[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; - len_start = header_len; - min_length = get_type_min_size (field->type) * count; - length_size_min = uint32_size (min_length); - header_len += length_size_min; - payload_at = out + header_len; - switch (field->type) - { - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - copy_to_little_endian_32 (payload_at, array, count); - payload_at += count * 4; - break; - - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - copy_to_little_endian_64 (payload_at, array, count); - payload_at += count * 8; - break; - - case PROTOBUF_C_TYPE_INT32: - { - const int32_t *arr = (const int32_t *) array; - for (i = 0; i < count; i++) - payload_at += int32_pack (arr[i], payload_at); - } - break; - - case PROTOBUF_C_TYPE_SINT32: - { - const int32_t *arr = (const int32_t *) array; - for (i = 0; i < count; i++) - payload_at += sint32_pack (arr[i], payload_at); - } - break; - - case PROTOBUF_C_TYPE_SINT64: - { - const int64_t *arr = (const int64_t *) array; - for (i = 0; i < count; i++) - payload_at += sint64_pack (arr[i], payload_at); - } - break; - case PROTOBUF_C_TYPE_ENUM: - case PROTOBUF_C_TYPE_UINT32: - { - const uint32_t *arr = (const uint32_t *) array; - for (i = 0; i < count; i++) - payload_at += uint32_pack (arr[i], payload_at); - } - break; - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - { - const uint64_t *arr = (const uint64_t *) array; - for (i = 0; i < count; i++) - payload_at += uint64_pack (arr[i], payload_at); - } - break; - case PROTOBUF_C_TYPE_BOOL: - { - const protobuf_c_boolean *arr = (const protobuf_c_boolean *) array; - for (i = 0; i < count; i++) - payload_at += boolean_pack (arr[i], payload_at); - } - break; - - default: - assert (0); - } - payload_len = payload_at - (out + header_len); - actual_length_size = uint32_size (payload_len); - if (length_size_min != actual_length_size) - { - assert (actual_length_size == length_size_min + 1); - memmove (out + header_len + 1, out + header_len, payload_len); - header_len++; - } - uint32_pack (payload_len, out + len_start); - return header_len + payload_len; - } - else - { - /* CONSIDER: optimize this case a bit (by putting the loop inside the switch) */ - size_t rv = 0; - unsigned siz = sizeof_elt_in_repeated_array (field->type); - for (i = 0; i < count; i++) - { - rv += required_field_pack (field, array, out + rv); - array += siz; - } - return rv; - } -} -static size_t -unknown_field_pack (const ProtobufCMessageUnknownField *field, - uint8_t *out) -{ - size_t rv = tag_pack (field->tag, out); - out[0] |= field->wire_type; - memcpy (out + rv, field->data, field->len); - return rv + field->len; -} - -size_t -protobuf_c_message_pack (const ProtobufCMessage *message, - uint8_t *out) -{ - unsigned i; - size_t rv = 0; - ASSERT_IS_MESSAGE (message); - for (i = 0; i < message->descriptor->n_fields; i++) - { - const ProtobufCFieldDescriptor *field = message->descriptor->fields + i; - const void *member = ((const char *) message) + field->offset; - - /* it doesn't hurt to compute qmember (a pointer to the quantifier - field of the structure), but the pointer is only valid if - the field is one of: - - a repeated field - - an optional field that isn't a pointer type - (meaning: not a message or a string) */ - const void *qmember = ((const char *) message) + field->quantifier_offset; - - if (field->label == PROTOBUF_C_LABEL_REQUIRED) - rv += required_field_pack (field, member, out + rv); - else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) - /* note that qmember is bogus for strings and messages, - but it isn't used */ - rv += optional_field_pack (field, qmember, member, out + rv); - else - rv += repeated_field_pack (field, * (const size_t *) qmember, member, out + rv); - } - for (i = 0; i < message->n_unknown_fields; i++) - rv += unknown_field_pack (&message->unknown_fields[i], out + rv); - return rv; -} - -/* === pack_to_buffer() === */ -static size_t -required_field_pack_to_buffer (const ProtobufCFieldDescriptor *field, - const void *member, - ProtobufCBuffer *buffer) -{ - size_t rv; - uint8_t scratch[MAX_UINT64_ENCODED_SIZE * 2]; - rv = tag_pack (field->id, scratch); - switch (field->type) - { - case PROTOBUF_C_TYPE_SINT32: - scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - rv += sint32_pack (*(const int32_t *) member, scratch + rv); - buffer->append (buffer, rv, scratch); - break; - case PROTOBUF_C_TYPE_INT32: - scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - rv += int32_pack (*(const uint32_t *) member, scratch + rv); - buffer->append (buffer, rv, scratch); - break; - case PROTOBUF_C_TYPE_UINT32: - case PROTOBUF_C_TYPE_ENUM: - scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - rv += uint32_pack (*(const uint32_t *) member, scratch + rv); - buffer->append (buffer, rv, scratch); - break; - case PROTOBUF_C_TYPE_SINT64: - scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - rv += sint64_pack (*(const int64_t *) member, scratch + rv); - buffer->append (buffer, rv, scratch); - break; - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - rv += uint64_pack (*(const uint64_t *) member, scratch + rv); - buffer->append (buffer, rv, scratch); - break; - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - scratch[0] |= PROTOBUF_C_WIRE_TYPE_32BIT; - rv += fixed32_pack (*(const uint32_t *) member, scratch + rv); - buffer->append (buffer, rv, scratch); - break; - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - scratch[0] |= PROTOBUF_C_WIRE_TYPE_64BIT; - rv += fixed64_pack (*(const uint64_t *) member, scratch + rv); - buffer->append (buffer, rv, scratch); - break; - case PROTOBUF_C_TYPE_BOOL: - scratch[0] |= PROTOBUF_C_WIRE_TYPE_VARINT; - rv += boolean_pack (*(const protobuf_c_boolean *) member, scratch + rv); - buffer->append (buffer, rv, scratch); - break; - case PROTOBUF_C_TYPE_STRING: - { - const char *str = *(char * const *) member; - size_t sublen = str ? strlen (str) : 0; - scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; - rv += uint32_pack (sublen, scratch + rv); - buffer->append (buffer, rv, scratch); - buffer->append (buffer, sublen, (const uint8_t *) str); - rv += sublen; - break; - } - - case PROTOBUF_C_TYPE_BYTES: - { - const ProtobufCBinaryData * bd = ((const ProtobufCBinaryData*) member); - size_t sublen = bd->len; - scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; - rv += uint32_pack (sublen, scratch + rv); - buffer->append (buffer, rv, scratch); - buffer->append (buffer, sublen, bd->data); - rv += sublen; - break; - } - //PROTOBUF_C_TYPE_GROUP, // NOT SUPPORTED - case PROTOBUF_C_TYPE_MESSAGE: - { - uint8_t simple_buffer_scratch[256]; - size_t sublen; - ProtobufCBufferSimple simple_buffer - = PROTOBUF_C_BUFFER_SIMPLE_INIT (simple_buffer_scratch); - const ProtobufCMessage *msg = *(ProtobufCMessage * const *) member; - scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; - if (msg == NULL) - sublen = 0; - else - sublen = protobuf_c_message_pack_to_buffer (msg, &simple_buffer.base); - rv += uint32_pack (sublen, scratch + rv); - buffer->append (buffer, rv, scratch); - buffer->append (buffer, sublen, simple_buffer.data); - rv += sublen; - PROTOBUF_C_BUFFER_SIMPLE_CLEAR (&simple_buffer); - break; - } - default: - PROTOBUF_C_ASSERT_NOT_REACHED (); - } - return rv; -} -static size_t -optional_field_pack_to_buffer (const ProtobufCFieldDescriptor *field, - const protobuf_c_boolean *has, - const void *member, - ProtobufCBuffer *buffer) -{ - if (field->type == PROTOBUF_C_TYPE_MESSAGE - || field->type == PROTOBUF_C_TYPE_STRING) - { - const void *ptr = * (const void * const *) member; - if (ptr == NULL - || ptr == field->default_value) - return 0; - } - else - { - if (!*has) - return 0; - } - return required_field_pack_to_buffer (field, member, buffer); -} - -static size_t -get_packed_payload_length (const ProtobufCFieldDescriptor *field, - unsigned count, - const void *array) -{ - unsigned rv = 0; - unsigned i; - switch (field->type) - { - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - return count * 4; - - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - return count * 8; - - case PROTOBUF_C_TYPE_INT32: - { - const int32_t *arr = (const int32_t *) array; - for (i = 0; i < count; i++) - rv += int32_size (arr[i]); - } - break; - - case PROTOBUF_C_TYPE_SINT32: - { - const int32_t *arr = (const int32_t *) array; - for (i = 0; i < count; i++) - rv += sint32_size (arr[i]); - } - break; - case PROTOBUF_C_TYPE_ENUM: - case PROTOBUF_C_TYPE_UINT32: - { - const uint32_t *arr = (const uint32_t *) array; - for (i = 0; i < count; i++) - rv += uint32_size (arr[i]); - } - break; - - case PROTOBUF_C_TYPE_SINT64: - { - const int64_t *arr = (const int64_t *) array; - for (i = 0; i < count; i++) - rv += sint64_size (arr[i]); - } - break; - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - { - const uint64_t *arr = (const uint64_t *) array; - for (i = 0; i < count; i++) - rv += uint64_size (arr[i]); - } - break; - case PROTOBUF_C_TYPE_BOOL: - return count; - default: - assert (0); - } - return rv; -} -static size_t -pack_buffer_packed_payload (const ProtobufCFieldDescriptor *field, - unsigned count, - const void *array, - ProtobufCBuffer *buffer) -{ - uint8_t scratch[16]; - size_t rv = 0; - unsigned i; - switch (field->type) - { - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: -#ifdef IS_LITTLE_ENDIAN - rv = count * 4; - goto no_packing_needed; -#else - for (i = 0; i < count; i++) - { - unsigned len = fixed32_pack (((uint32_t*)array)[i], scratch); - buffer->append (buffer, len, scratch); - rv += len; - } -#endif - break; - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: -#ifdef IS_LITTLE_ENDIAN - rv = count * 8; - goto no_packing_needed; -#else - for (i = 0; i < count; i++) - { - unsigned len = fixed64_pack (((uint64_t*)array)[i], scratch); - buffer->append (buffer, len, scratch); - rv += len; - } - break; -#endif - case PROTOBUF_C_TYPE_INT32: - for (i = 0; i < count; i++) - { - unsigned len = int32_pack (((int32_t*)array)[i], scratch); - buffer->append (buffer, len, scratch); - rv += len; - } - break; - - case PROTOBUF_C_TYPE_SINT32: - for (i = 0; i < count; i++) - { - unsigned len = sint32_pack (((int32_t*)array)[i], scratch); - buffer->append (buffer, len, scratch); - rv += len; - } - break; - case PROTOBUF_C_TYPE_ENUM: - case PROTOBUF_C_TYPE_UINT32: - for (i = 0; i < count; i++) - { - unsigned len = uint32_pack (((uint32_t*)array)[i], scratch); - buffer->append (buffer, len, scratch); - rv += len; - } - break; - - case PROTOBUF_C_TYPE_SINT64: - for (i = 0; i < count; i++) - { - unsigned len = sint64_pack (((int64_t*)array)[i], scratch); - buffer->append (buffer, len, scratch); - rv += len; - } - break; - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - for (i = 0; i < count; i++) - { - unsigned len = uint64_pack (((uint64_t*)array)[i], scratch); - buffer->append (buffer, len, scratch); - rv += len; - } - break; - case PROTOBUF_C_TYPE_BOOL: - for (i = 0; i < count; i++) - { - unsigned len = boolean_pack (((protobuf_c_boolean*)array)[i], scratch); - buffer->append (buffer, len, scratch); - rv += len; - } - return count; - default: - assert(0); - } - return rv; - -#ifdef IS_LITTLE_ENDIAN -no_packing_needed: - buffer->append (buffer, rv, array); - return rv; -#endif -} - -static size_t -repeated_field_pack_to_buffer (const ProtobufCFieldDescriptor *field, - unsigned count, - const void *member, - ProtobufCBuffer *buffer) -{ - char *array = * (char * const *) member; - if (count == 0) - return 0; - if (field->packed) - { - uint8_t scratch[MAX_UINT64_ENCODED_SIZE * 2]; - size_t rv = tag_pack (field->id, scratch); - size_t payload_len = get_packed_payload_length (field, count, array); - size_t tmp; - scratch[0] |= PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED; - rv += uint32_pack (payload_len, scratch + rv); - buffer->append (buffer, rv, scratch); - tmp = pack_buffer_packed_payload (field, count, array, buffer); - if (tmp != payload_len){ - fprintf (stderr, "Unexpected payload length: %zu (expected: %zu). Aborting.\n", tmp, payload_len); - abort (); - } - return rv + payload_len; - } - else - { - size_t siz; - unsigned i; - /* CONSIDER: optimize this case a bit (by putting the loop inside the switch) */ - unsigned rv = 0; - siz = sizeof_elt_in_repeated_array (field->type); - for (i = 0; i < count; i++) - { - rv += required_field_pack_to_buffer (field, array, buffer); - array += siz; - } - return rv; - } -} - -static size_t -unknown_field_pack_to_buffer (const ProtobufCMessageUnknownField *field, - ProtobufCBuffer *buffer) -{ - uint8_t header[MAX_UINT64_ENCODED_SIZE]; - size_t rv = tag_pack (field->tag, header); - header[0] |= field->wire_type; - buffer->append (buffer, rv, header); - buffer->append (buffer, field->len, field->data); - return rv + field->len; -} - -size_t -protobuf_c_message_pack_to_buffer (const ProtobufCMessage *message, - ProtobufCBuffer *buffer) -{ - unsigned i; - size_t rv = 0; - ASSERT_IS_MESSAGE (message); - for (i = 0; i < message->descriptor->n_fields; i++) - { - const ProtobufCFieldDescriptor *field = message->descriptor->fields + i; - const void *member = ((const char *) message) + field->offset; - const void *qmember = ((const char *) message) + field->quantifier_offset; - - if (field->label == PROTOBUF_C_LABEL_REQUIRED) - rv += required_field_pack_to_buffer (field, member, buffer); - else if (field->label == PROTOBUF_C_LABEL_OPTIONAL) - rv += optional_field_pack_to_buffer (field, qmember, member, buffer); - else - rv += repeated_field_pack_to_buffer (field, * (const size_t *) qmember, member, buffer); - } - for (i = 0; i < message->n_unknown_fields; i++) - rv += unknown_field_pack_to_buffer (&message->unknown_fields[i], buffer); - - return rv; -} - -/* === unpacking === */ -#if PRINT_UNPACK_ERRORS -# define UNPACK_ERROR(args) do { printf args;printf("\n"); }while(0) -#else -# define UNPACK_ERROR(args) do { } while (0) -#endif - -static inline int -int_range_lookup (unsigned n_ranges, - const ProtobufCIntRange *ranges, - int value) -{ - unsigned start, n; - if (n_ranges == 0) - return -1; - start = 0; - n = n_ranges; - while (n > 1) - { - unsigned mid = start + n / 2; - if (value < ranges[mid].start_value) - { - n = mid - start; - } - else if (value >= ranges[mid].start_value + (int)(ranges[mid+1].orig_index-ranges[mid].orig_index)) - { - unsigned new_start = mid + 1; - n = start + n - new_start; - start = new_start; - } - else - return (value - ranges[mid].start_value) + ranges[mid].orig_index; - } - if (n > 0) - { - unsigned start_orig_index = ranges[start].orig_index; - unsigned range_size = ranges[start+1].orig_index - start_orig_index; - - if (ranges[start].start_value <= value - && value < (int)(ranges[start].start_value + range_size)) - return (value - ranges[start].start_value) + start_orig_index; - } - return -1; -} - -static size_t -parse_tag_and_wiretype (size_t len, - const uint8_t *data, - uint32_t *tag_out, - ProtobufCWireType *wiretype_out) -{ - unsigned max_rv = len > 5 ? 5 : len; - uint32_t tag = (data[0]&0x7f) >> 3; - unsigned shift = 4; - unsigned rv; - *wiretype_out = data[0] & 7; - if ((data[0] & 0x80) == 0) - { - *tag_out = tag; - return 1; - } - for (rv = 1; rv < max_rv; rv++) - if (data[rv] & 0x80) - { - tag |= (data[rv] & 0x7f) << shift; - shift += 7; - } - else - { - tag |= data[rv] << shift; - *tag_out = tag; - return rv + 1; - } - return 0; /* error: bad header */ -} - -/* sizeof(ScannedMember) must be <= (1<<BOUND_SIZEOF_SCANNED_MEMBER_LOG2) */ -#define BOUND_SIZEOF_SCANNED_MEMBER_LOG2 5 -typedef struct _ScannedMember ScannedMember; -struct _ScannedMember -{ - uint32_t tag; - uint8_t wire_type; - uint8_t length_prefix_len; - const ProtobufCFieldDescriptor *field; - size_t len; - const uint8_t *data; -}; - -static inline uint32_t -scan_length_prefixed_data (size_t len, const uint8_t *data, size_t *prefix_len_out) -{ - unsigned hdr_max = len < 5 ? len : 5; - unsigned hdr_len; - uint32_t val = 0; - unsigned i; - unsigned shift = 0; - for (i = 0; i < hdr_max; i++) - { - val |= (data[i] & 0x7f) << shift; - shift += 7; - if ((data[i] & 0x80) == 0) - break; - } - if (i == hdr_max) - { - UNPACK_ERROR (("error parsing length for length-prefixed data")); - return 0; - } - hdr_len = i + 1; - *prefix_len_out = hdr_len; - if (hdr_len + val > len) - { - UNPACK_ERROR (("data too short after length-prefix of %u", - val)); - return 0; - } - return hdr_len + val; -} - -static size_t -max_b128_numbers (size_t len, const uint8_t *data) -{ - size_t rv = 0; - while (len--) - if ((*data++ & 0x80) == 0) - ++rv; - return rv; -} - - -/* Given a raw slab of packed-repeated values, - determine the number of elements. - This function detects certain kinds of errors - but not others; the remaining error checking is done by - parse_packed_repeated_member() */ -static protobuf_c_boolean -count_packed_elements (ProtobufCType type, - size_t len, - const uint8_t *data, - size_t *count_out) -{ - switch (type) - { - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - if (len % 4 != 0) - { - UNPACK_ERROR (("length must be a multiple of 4 for fixed-length 32-bit types")); - return FALSE; - } - *count_out = len / 4; - return TRUE; - - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - if (len % 8 != 0) - { - UNPACK_ERROR (("length must be a multiple of 8 for fixed-length 64-bit types")); - return FALSE; - } - *count_out = len / 8; - return TRUE; - - case PROTOBUF_C_TYPE_INT32: - case PROTOBUF_C_TYPE_SINT32: - case PROTOBUF_C_TYPE_ENUM: - case PROTOBUF_C_TYPE_UINT32: - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_SINT64: - case PROTOBUF_C_TYPE_UINT64: - *count_out = max_b128_numbers (len, data); - return TRUE; - case PROTOBUF_C_TYPE_BOOL: - *count_out = len; - return TRUE; - - case PROTOBUF_C_TYPE_STRING: - case PROTOBUF_C_TYPE_BYTES: - case PROTOBUF_C_TYPE_MESSAGE: - default: - UNPACK_ERROR (("bad protobuf-c type %u for packed-repeated", type)); - return FALSE; - } -} - -static inline uint32_t -parse_uint32 (unsigned len, const uint8_t *data) -{ - unsigned rv = data[0] & 0x7f; - if (len > 1) - { - rv |= ((data[1] & 0x7f) << 7); - if (len > 2) - { - rv |= ((data[2] & 0x7f) << 14); - if (len > 3) - { - rv |= ((data[3] & 0x7f) << 21); - if (len > 4) - rv |= (data[4] << 28); - } - } - } - return rv; -} -static inline uint32_t -parse_int32 (unsigned len, const uint8_t *data) -{ - return parse_uint32 (len, data); -} -static inline int32_t -unzigzag32 (uint32_t v) -{ - if (v&1) - return -(v>>1) - 1; - else - return v>>1; -} -static inline uint32_t -parse_fixed_uint32 (const uint8_t *data) -{ -#ifdef IS_LITTLE_ENDIAN - uint32_t t; - memcpy (&t, data, 4); - return t; -#else - return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24); -#endif -} -static uint64_t -parse_uint64 (unsigned len, const uint8_t *data) -{ - unsigned shift, i; - if (len < 5) - return parse_uint32 (len, data); - uint64_t rv = ((data[0] & 0x7f)) - | ((data[1] & 0x7f)<<7) - | ((data[2] & 0x7f)<<14) - | ((data[3] & 0x7f)<<21); - shift = 28; - for (i = 4; i < len; i++) - { - rv |= (((uint64_t)(data[i]&0x7f)) << shift); - shift += 7; - } - return rv; -} -static inline int64_t -unzigzag64 (uint64_t v) -{ - if (v&1) - return -(v>>1) - 1; - else - return v>>1; -} -static inline uint64_t -parse_fixed_uint64 (const uint8_t *data) -{ -#ifdef IS_LITTLE_ENDIAN - uint64_t t; - memcpy (&t, data, 8); - return t; -#else - return (uint64_t)parse_fixed_uint32 (data) - | (((uint64_t)parse_fixed_uint32(data+4)) << 32); -#endif -} -static protobuf_c_boolean -parse_boolean (unsigned len, const uint8_t *data) -{ - unsigned i; - for (i = 0; i < len; i++) - if (data[i] & 0x7f) - return 1; - return 0; -} -static protobuf_c_boolean -parse_required_member (ScannedMember *scanned_member, - void *member, - ProtobufCAllocator *allocator, - protobuf_c_boolean maybe_clear) -{ - unsigned len = scanned_member->len; - const uint8_t *data = scanned_member->data; - ProtobufCWireType wire_type = scanned_member->wire_type; - switch (scanned_member->field->type) - { - case PROTOBUF_C_TYPE_INT32: - if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) - return 0; - *(uint32_t*)member = parse_int32 (len, data); - return 1; - case PROTOBUF_C_TYPE_UINT32: - if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) - return 0; - *(uint32_t*)member = parse_uint32 (len, data); - return 1; - case PROTOBUF_C_TYPE_SINT32: - if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) - return 0; - *(int32_t*)member = unzigzag32 (parse_uint32 (len, data)); - return 1; - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - if (wire_type != PROTOBUF_C_WIRE_TYPE_32BIT) - return 0; - *(uint32_t*)member = parse_fixed_uint32 (data); - return 1; - - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) - return 0; - *(uint64_t*)member = parse_uint64 (len, data); - return 1; - case PROTOBUF_C_TYPE_SINT64: - if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) - return 0; - *(int64_t*)member = unzigzag64 (parse_uint64 (len, data)); - return 1; - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - if (wire_type != PROTOBUF_C_WIRE_TYPE_64BIT) - return 0; - *(uint64_t*)member = parse_fixed_uint64 (data); - return 1; - - case PROTOBUF_C_TYPE_BOOL: - *(protobuf_c_boolean*)member = parse_boolean (len, data); - return 1; - - case PROTOBUF_C_TYPE_ENUM: - if (wire_type != PROTOBUF_C_WIRE_TYPE_VARINT) - return 0; - *(uint32_t*)member = parse_uint32 (len, data); - return 1; - - case PROTOBUF_C_TYPE_STRING: - if (wire_type != PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED) - return 0; - { - char **pstr = member; - unsigned pref_len = scanned_member->length_prefix_len; - if (maybe_clear && *pstr != NULL) - { - const char *def = scanned_member->field->default_value; - if (*pstr != NULL && *pstr != def) - FREE (allocator, *pstr); - } - DO_ALLOC (*pstr, allocator, len - pref_len + 1, return 0); - memcpy (*pstr, data + pref_len, len - pref_len); - (*pstr)[len-pref_len] = 0; - return 1; - } - case PROTOBUF_C_TYPE_BYTES: - if (wire_type != PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED) - return 0; - { - ProtobufCBinaryData *bd = member; - const ProtobufCBinaryData *def_bd; - unsigned pref_len = scanned_member->length_prefix_len; - def_bd = scanned_member->field->default_value; - if (maybe_clear && bd->data != NULL && bd->data != def_bd->data) - FREE (allocator, bd->data); - DO_ALLOC (bd->data, allocator, len - pref_len, return 0); - memcpy (bd->data, data + pref_len, len - pref_len); - bd->len = len - pref_len; - return 1; - } - //case PROTOBUF_C_TYPE_GROUP, // NOT SUPPORTED - case PROTOBUF_C_TYPE_MESSAGE: - if (wire_type != PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED) - return 0; - { - ProtobufCMessage **pmessage = member; - ProtobufCMessage *subm; - const ProtobufCMessage *def_mess; - unsigned pref_len = scanned_member->length_prefix_len; - def_mess = scanned_member->field->default_value; - if (maybe_clear && *pmessage != NULL && *pmessage != def_mess) - protobuf_c_message_free_unpacked (*pmessage, allocator); - subm = protobuf_c_message_unpack (scanned_member->field->descriptor, - allocator, - len - pref_len, data + pref_len); - *pmessage = subm; /* since we freed the message we must clear the field, even if NULL */ - if (subm == NULL) - return 0; - return 1; - } - } - return 0; -} - -static protobuf_c_boolean -parse_optional_member (ScannedMember *scanned_member, - void *member, - ProtobufCMessage *message, - ProtobufCAllocator *allocator) -{ - if (!parse_required_member (scanned_member, member, allocator, TRUE)) - return 0; - if (scanned_member->field->quantifier_offset != 0) - STRUCT_MEMBER (protobuf_c_boolean, - message, - scanned_member->field->quantifier_offset) = 1; - return 1; -} - -static protobuf_c_boolean -parse_repeated_member (ScannedMember *scanned_member, - void *member, - ProtobufCMessage *message, - ProtobufCAllocator *allocator) -{ - const ProtobufCFieldDescriptor *field = scanned_member->field; - size_t *p_n = STRUCT_MEMBER_PTR(size_t, message, field->quantifier_offset); - size_t siz = sizeof_elt_in_repeated_array (field->type); - char *array = *(char**)member; - if (!parse_required_member (scanned_member, - array + siz * (*p_n), - allocator, - FALSE)) - return 0; - *p_n += 1; - return 1; -} - -static unsigned scan_varint (unsigned len, const uint8_t *data) -{ - unsigned i; - if (len > 10) - len = 10; - for (i = 0; i < len; i++) - if ((data[i] & 0x80) == 0) - break; - if (i == len) - return 0; - return i + 1; -} - -static protobuf_c_boolean -parse_packed_repeated_member (ScannedMember *scanned_member, - void *member, - ProtobufCMessage *message) -{ - const ProtobufCFieldDescriptor *field = scanned_member->field; - size_t *p_n = STRUCT_MEMBER_PTR(size_t, message, field->quantifier_offset); - size_t siz = sizeof_elt_in_repeated_array (field->type); - char *array = *(char**)member + siz * (*p_n); - const uint8_t *at = scanned_member->data + scanned_member->length_prefix_len; - size_t rem = scanned_member->len - scanned_member->length_prefix_len; - size_t count = 0; - unsigned i; - switch (field->type) - { - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - count = (scanned_member->len - scanned_member->length_prefix_len) / 4; -#ifdef IS_LITTLE_ENDIAN - goto no_unpacking_needed; -#else - for (i = 0; i < count; i++) - { - ((uint32_t*)array)[i] = parse_fixed_uint32 (at); - at += 4; - } -#endif - break; - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - count = (scanned_member->len - scanned_member->length_prefix_len) / 8; -#ifdef IS_LITTLE_ENDIAN - goto no_unpacking_needed; -#else - for (i = 0; i < count; i++) - { - ((uint64_t*)array)[i] = parse_fixed_uint64 (at); - at += 8; - } - break; -#endif - case PROTOBUF_C_TYPE_INT32: - while (rem > 0) - { - unsigned s = scan_varint (rem, at); - if (s == 0) - { - UNPACK_ERROR (("bad packed-repeated int32 value")); - return FALSE; - } - ((int32_t*)array)[count++] = parse_int32 (s, at); - at += s; - rem -= s; - } - break; - - case PROTOBUF_C_TYPE_SINT32: - while (rem > 0) - { - unsigned s = scan_varint (rem, at); - if (s == 0) - { - UNPACK_ERROR (("bad packed-repeated sint32 value")); - return FALSE; - } - ((int32_t*)array)[count++] = unzigzag32 (parse_uint32 (s, at)); - at += s; - rem -= s; - } - break; - case PROTOBUF_C_TYPE_ENUM: - case PROTOBUF_C_TYPE_UINT32: - while (rem > 0) - { - unsigned s = scan_varint (rem, at); - if (s == 0) - { - UNPACK_ERROR (("bad packed-repeated enum or uint32 value")); - return FALSE; - } - ((uint32_t*)array)[count++] = parse_uint32 (s, at); - at += s; - rem -= s; - } - break; - - case PROTOBUF_C_TYPE_SINT64: - while (rem > 0) - { - unsigned s = scan_varint (rem, at); - if (s == 0) - { - UNPACK_ERROR (("bad packed-repeated sint64 value")); - return FALSE; - } - ((int64_t*)array)[count++] = unzigzag64 (parse_uint64 (s, at)); - at += s; - rem -= s; - } - break; - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_UINT64: - while (rem > 0) - { - unsigned s = scan_varint (rem, at); - if (s == 0) - { - UNPACK_ERROR (("bad packed-repeated int64/uint64 value")); - return FALSE; - } - ((int64_t*)array)[count++] = parse_uint64 (s, at); - at += s; - rem -= s; - } - break; - case PROTOBUF_C_TYPE_BOOL: - count = rem; - for (i = 0; i < count; i++) - { - if (at[i] > 1) - { - UNPACK_ERROR (("bad packed-repeated boolean value")); - return FALSE; - } - ((protobuf_c_boolean*)array)[i] = at[i]; - } - break; - default: - assert(0); - } - *p_n += count; - return TRUE; - -#ifdef IS_LITTLE_ENDIAN -no_unpacking_needed: - memcpy (array, at, count * siz); - *p_n += count; - return TRUE; -#endif -} - -static protobuf_c_boolean -parse_member (ScannedMember *scanned_member, - ProtobufCMessage *message, - ProtobufCAllocator *allocator) -{ - const ProtobufCFieldDescriptor *field = scanned_member->field; - void *member; - if (field == NULL) - { - ProtobufCMessageUnknownField *ufield = message->unknown_fields + (message->n_unknown_fields++); - ufield->tag = scanned_member->tag; - ufield->wire_type = scanned_member->wire_type; - ufield->len = scanned_member->len; - DO_UNALIGNED_ALLOC (ufield->data, allocator, scanned_member->len, return 0); - memcpy (ufield->data, scanned_member->data, ufield->len); - return 1; - } - member = (char*)message + field->offset; - switch (field->label) - { - case PROTOBUF_C_LABEL_REQUIRED: - return parse_required_member (scanned_member, member, allocator, TRUE); - case PROTOBUF_C_LABEL_OPTIONAL: - return parse_optional_member (scanned_member, member, message, allocator); - case PROTOBUF_C_LABEL_REPEATED: - if (field->packed - && scanned_member->wire_type == PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED) - return parse_packed_repeated_member (scanned_member, member, message); - else - return parse_repeated_member (scanned_member, member, message, allocator); - } - PROTOBUF_C_ASSERT_NOT_REACHED (); - return 0; -} - - -/* TODO: expose/use this function if desc->message_init==NULL - (which occurs for old code, and may be useful for certain - programatic techniques for generating descriptors). */ -static void -protobuf_c_message_init_generic (const ProtobufCMessageDescriptor *desc, - ProtobufCMessage *message) -{ - unsigned i; - memset (message, 0, desc->sizeof_message); - message->descriptor = desc; - for (i = 0; i < desc->n_fields; i++) - if (desc->fields[i].default_value != NULL - && desc->fields[i].label != PROTOBUF_C_LABEL_REPEATED) - { - void *field = STRUCT_MEMBER_P (message, desc->fields[i].offset); - const void *dv = desc->fields[i].default_value; - switch (desc->fields[i].type) - { - case PROTOBUF_C_TYPE_INT32: - case PROTOBUF_C_TYPE_SINT32: - case PROTOBUF_C_TYPE_SFIXED32: - case PROTOBUF_C_TYPE_UINT32: - case PROTOBUF_C_TYPE_FIXED32: - case PROTOBUF_C_TYPE_FLOAT: - case PROTOBUF_C_TYPE_ENUM: - memcpy (field, dv, 4); - break; - - case PROTOBUF_C_TYPE_INT64: - case PROTOBUF_C_TYPE_SINT64: - case PROTOBUF_C_TYPE_SFIXED64: - case PROTOBUF_C_TYPE_UINT64: - case PROTOBUF_C_TYPE_FIXED64: - case PROTOBUF_C_TYPE_DOUBLE: - memcpy (field, dv, 8); - break; - - case PROTOBUF_C_TYPE_BOOL: - memcpy (field, dv, sizeof (protobuf_c_boolean)); - break; - - case PROTOBUF_C_TYPE_BYTES: - memcpy (field, dv, sizeof (ProtobufCBinaryData)); - break; - - case PROTOBUF_C_TYPE_STRING: - case PROTOBUF_C_TYPE_MESSAGE: - /* the next line essentially implements a cast from const, - which is totally unavoidable. */ - *(const void**)field = dv; - break; - } - } -} - -/* ScannedMember slabs (an unpacking implementation detail). - Before doing real unpacking, we first scan through the - elements to see how many there are (for repeated fields), - and which field to use (for non-repeated fields given twice). - - * In order to avoid allocations for small messages, - we keep a stack-allocated slab of ScannedMembers of - size FIRST_SCANNED_MEMBER_SLAB_SIZE (16). - After we fill that up, we allocate each slab twice - as large as the previous one. */ -#define FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2 4 - -/* The number of slabs, including the stack-allocated ones; - choose the number so that we would overflow if we needed - a slab larger than provided. */ -#define MAX_SCANNED_MEMBER_SLAB \ - (sizeof(void*)*8 - 1 \ - - BOUND_SIZEOF_SCANNED_MEMBER_LOG2 \ - - FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2) - -ProtobufCMessage * -protobuf_c_message_unpack (const ProtobufCMessageDescriptor *desc, - ProtobufCAllocator *allocator, - size_t len, - const uint8_t *data) -{ - ProtobufCMessage *rv; - size_t rem = len; - const uint8_t *at = data; - const ProtobufCFieldDescriptor *last_field = desc->fields + 0; - ScannedMember first_member_slab[1<<FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2]; - - /* scanned_member_slabs[i] is an array of arrays of ScannedMember. - The first slab (scanned_member_slabs[0] is just a pointer to - first_member_slab), above. All subsequent slabs will be allocated - using the allocator. */ - ScannedMember *scanned_member_slabs[MAX_SCANNED_MEMBER_SLAB+1]; - unsigned which_slab = 0; /* the slab we are currently populating */ - unsigned in_slab_index = 0; /* number of members in the slab */ - size_t n_unknown = 0; - unsigned f; - unsigned i_slab; - unsigned last_field_index = 0; - unsigned long *required_fields_bitmap; - unsigned required_fields_bitmap_len; - static const unsigned word_bits = sizeof(long) * 8; - - ASSERT_IS_MESSAGE_DESCRIPTOR (desc); - - if (allocator == NULL) - allocator = &protobuf_c_default_allocator; - - required_fields_bitmap_len = (desc->n_fields + word_bits - 1) / word_bits; - required_fields_bitmap = alloca(required_fields_bitmap_len * sizeof(long)); - memset(required_fields_bitmap, 0, required_fields_bitmap_len * sizeof(long)); - - DO_ALLOC (rv, allocator, desc->sizeof_message, return NULL); - scanned_member_slabs[0] = first_member_slab; - - /* Generated code always defines "message_init". - However, we provide a fallback for (1) users of old protobuf-c - generated-code that do not provide the function, - and (2) descriptors constructed from some other source - (most likely, direct construction from the .proto file) */ - if (desc->message_init != NULL) - protobuf_c_message_init (desc, rv); - else - protobuf_c_message_init_generic (desc, rv); - - while (rem > 0) - { - uint32_t tag; - ProtobufCWireType wire_type; - size_t used = parse_tag_and_wiretype (rem, at, &tag, &wire_type); - const ProtobufCFieldDescriptor *field; - ScannedMember tmp; - if (used == 0) - { - UNPACK_ERROR (("error parsing tag/wiretype at offset %u", - (unsigned)(at-data))); - goto error_cleanup_during_scan; - } - /* XXX: consider optimizing for field[1].id == tag, if field[1] exists! */ - if (last_field->id != tag) - { - /* lookup field */ - int field_index = int_range_lookup (desc->n_field_ranges, - desc->field_ranges, - tag); - if (field_index < 0) - { - field = NULL; - n_unknown++; - } - else - { - field = desc->fields + field_index; - last_field = field; - last_field_index = field_index; - } - } - else - field = last_field; - - if (field != NULL && field->label == PROTOBUF_C_LABEL_REQUIRED) - required_fields_bitmap[last_field_index / word_bits] |= (1UL << (last_field_index % word_bits)); - - at += used; - rem -= used; - tmp.tag = tag; - tmp.wire_type = wire_type; - tmp.field = field; - tmp.data = at; - switch (wire_type) - { - case PROTOBUF_C_WIRE_TYPE_VARINT: - { - unsigned max_len = rem < 10 ? rem : 10; - unsigned i; - for (i = 0; i < max_len; i++) - if ((at[i] & 0x80) == 0) - break; - if (i == max_len) - { - UNPACK_ERROR (("unterminated varint at offset %u", - (unsigned)(at-data))); - goto error_cleanup_during_scan; - } - tmp.len = i + 1; - } - break; - case PROTOBUF_C_WIRE_TYPE_64BIT: - if (rem < 8) - { - UNPACK_ERROR (("too short after 64bit wiretype at offset %u", - (unsigned)(at-data))); - goto error_cleanup_during_scan; - } - tmp.len = 8; - break; - case PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED: - { - size_t pref_len; - tmp.len = scan_length_prefixed_data (rem, at, &pref_len); - if (tmp.len == 0) - { - /* NOTE: scan_length_prefixed_data calls UNPACK_ERROR */ - goto error_cleanup_during_scan; - } - tmp.length_prefix_len = pref_len; - break; - } - case PROTOBUF_C_WIRE_TYPE_32BIT: - if (rem < 4) - { - UNPACK_ERROR (("too short after 32bit wiretype at offset %u", - (unsigned)(at-data))); - goto error_cleanup_during_scan; - } - tmp.len = 4; - break; - default: - UNPACK_ERROR (("unsupported tag %u at offset %u", - wire_type, (unsigned)(at-data))); - goto error_cleanup_during_scan; - } - if (in_slab_index == (1U<<(which_slab+FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2))) - { - size_t size; - in_slab_index = 0; - if (which_slab == MAX_SCANNED_MEMBER_SLAB) - { - UNPACK_ERROR (("too many fields")); - goto error_cleanup_during_scan; - } - which_slab++; - size = sizeof(ScannedMember) << (which_slab+FIRST_SCANNED_MEMBER_SLAB_SIZE_LOG2); - /* TODO: consider using alloca() ! */ - if (allocator->tmp_alloc != NULL) - scanned_member_slabs[which_slab] = TMPALLOC(allocator, size); - else - DO_ALLOC (scanned_member_slabs[which_slab], allocator, size, goto error_cleanup_during_scan); - } - scanned_member_slabs[which_slab][in_slab_index++] = tmp; - - if (field != NULL && field->label == PROTOBUF_C_LABEL_REPEATED) - { - size_t *n = STRUCT_MEMBER_PTR (size_t, rv, field->quantifier_offset); - if (field->packed - && wire_type == PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED) - { - size_t count; - if (!count_packed_elements (field->type, - tmp.len - tmp.length_prefix_len, - tmp.data + tmp.length_prefix_len, - &count)) - { - UNPACK_ERROR (("counting packed elements")); - goto error_cleanup_during_scan; - } - *n += count; - } - else - *n += 1; - } - - at += tmp.len; - rem -= tmp.len; - } - - /* allocate space for repeated fields, also check that all required fields have been set */ - for (f = 0; f < desc->n_fields; f++) - { - const ProtobufCFieldDescriptor *field = desc->fields + f; - if (field->label == PROTOBUF_C_LABEL_REPEATED) - { - size_t siz = sizeof_elt_in_repeated_array (field->type); - size_t *n_ptr = STRUCT_MEMBER_PTR (size_t, rv, field->quantifier_offset); - if (*n_ptr != 0) - { - unsigned n = *n_ptr; - *n_ptr = 0; - assert(rv->descriptor != NULL); -#define CLEAR_REMAINING_N_PTRS() \ - for(f++;f < desc->n_fields; f++) \ - { \ - field = desc->fields + f; \ - if (field->label == PROTOBUF_C_LABEL_REPEATED) \ - STRUCT_MEMBER (size_t, rv, field->quantifier_offset) = 0; \ - } - DO_ALLOC (STRUCT_MEMBER (void *, rv, field->offset), - allocator, siz * n, - CLEAR_REMAINING_N_PTRS (); goto error_cleanup); -#undef CLEAR_REMAINING_N_PTRS - } - } - else if (field->label == PROTOBUF_C_LABEL_REQUIRED) - { - if (field->default_value == NULL && 0 == (required_fields_bitmap[f / word_bits] & (1UL << (f % word_bits)))) - { - UNPACK_ERROR (("message '%s': missing required field '%s'", desc->name, field->name)); - goto error_cleanup; - } - } - } - - /* allocate space for unknown fields */ - if (n_unknown) - { - DO_ALLOC (rv->unknown_fields, - allocator, n_unknown * sizeof (ProtobufCMessageUnknownField), - goto error_cleanup); - } - - /* do real parsing */ - for (i_slab = 0; i_slab <= which_slab; i_slab++) - { - unsigned max = (i_slab == which_slab) ? in_slab_index : (1U<<(i_slab+4)); - ScannedMember *slab = scanned_member_slabs[i_slab]; - unsigned j; - for (j = 0; j < max; j++) - { - if (!parse_member (slab + j, rv, allocator)) - { - UNPACK_ERROR (("error parsing member %s of %s", - slab->field ? slab->field->name : "*unknown-field*", desc->name)); - goto error_cleanup; - } - } - } - - /* cleanup */ - if (allocator->tmp_alloc == NULL) - { - unsigned j; - for (j = 1; j <= which_slab; j++) - FREE (allocator, scanned_member_slabs[j]); - } - - return rv; - -error_cleanup: - protobuf_c_message_free_unpacked (rv, allocator); - if (allocator->tmp_alloc == NULL) - { - unsigned j; - for (j = 1; j <= which_slab; j++) - FREE (allocator, scanned_member_slabs[j]); - } - return NULL; - -error_cleanup_during_scan: - FREE (allocator, rv); - if (allocator->tmp_alloc == NULL) - { - unsigned j; - for (j = 1; j <= which_slab; j++) - FREE (allocator, scanned_member_slabs[j]); - } - return NULL; -} - -/* === free_unpacked === */ -void -protobuf_c_message_free_unpacked (ProtobufCMessage *message, - ProtobufCAllocator *allocator) -{ - const ProtobufCMessageDescriptor *desc = message->descriptor; - unsigned f; - ASSERT_IS_MESSAGE (message); - if (allocator == NULL) - allocator = &protobuf_c_default_allocator; - message->descriptor = NULL; - for (f = 0; f < desc->n_fields; f++) - { - if (desc->fields[f].label == PROTOBUF_C_LABEL_REPEATED) - { - size_t n = STRUCT_MEMBER (size_t, message, desc->fields[f].quantifier_offset); - void * arr = STRUCT_MEMBER (void *, message, desc->fields[f].offset); - if (desc->fields[f].type == PROTOBUF_C_TYPE_STRING) - { - unsigned i; - for (i = 0; i < n; i++) - FREE (allocator, ((char**)arr)[i]); - } - else if (desc->fields[f].type == PROTOBUF_C_TYPE_BYTES) - { - unsigned i; - for (i = 0; i < n; i++) - FREE (allocator, ((ProtobufCBinaryData*)arr)[i].data); - } - else if (desc->fields[f].type == PROTOBUF_C_TYPE_MESSAGE) - { - unsigned i; - for (i = 0; i < n; i++) - protobuf_c_message_free_unpacked (((ProtobufCMessage**)arr)[i], allocator); - } - if (arr != NULL) - FREE (allocator, arr); - } - else if (desc->fields[f].type == PROTOBUF_C_TYPE_STRING) - { - char *str = STRUCT_MEMBER (char *, message, desc->fields[f].offset); - if (str && str != desc->fields[f].default_value) - FREE (allocator, str); - } - else if (desc->fields[f].type == PROTOBUF_C_TYPE_BYTES) - { - void *data = STRUCT_MEMBER (ProtobufCBinaryData, message, desc->fields[f].offset).data; - const ProtobufCBinaryData *default_bd; - default_bd = desc->fields[f].default_value; - if (data != NULL - && (default_bd == NULL || default_bd->data != data)) - FREE (allocator, data); - } - else if (desc->fields[f].type == PROTOBUF_C_TYPE_MESSAGE) - { - ProtobufCMessage *sm; - sm = STRUCT_MEMBER (ProtobufCMessage *, message,desc->fields[f].offset); - if (sm && sm != desc->fields[f].default_value) - protobuf_c_message_free_unpacked (sm, allocator); - } - } - - for (f = 0; f < message->n_unknown_fields; f++) - FREE (allocator, message->unknown_fields[f].data); - if (message->unknown_fields != NULL) - FREE (allocator, message->unknown_fields); - - FREE (allocator, message); -} - -/* === services === */ -typedef void (*GenericHandler)(void *service, - const ProtobufCMessage *input, - ProtobufCClosure closure, - void *closure_data); -void -protobuf_c_service_invoke_internal(ProtobufCService *service, - unsigned method_index, - const ProtobufCMessage *input, - ProtobufCClosure closure, - void *closure_data) -{ - GenericHandler *handlers; - GenericHandler handler; - - /* Verify that method_index is within range. - If this fails, you are likely invoking a newly added - method on an old service. (Although other memory corruption - bugs can cause this assertion too) */ - PROTOBUF_C_ASSERT (method_index < service->descriptor->n_methods); - - /* Get the array of virtual methods (which are enumerated by - the generated code) */ - handlers = (GenericHandler *) (service + 1); - - /* get our method and invoke it */ - /* TODO: seems like handler==NULL is a situation that - needs handling */ - handler = handlers[method_index]; - (*handler) (service, input, closure, closure_data); -} - -void -protobuf_c_service_generated_init (ProtobufCService *service, - const ProtobufCServiceDescriptor *descriptor, - ProtobufCServiceDestroy destroy) -{ - ASSERT_IS_SERVICE_DESCRIPTOR(descriptor); - service->descriptor = descriptor; - service->destroy = destroy; - service->invoke = protobuf_c_service_invoke_internal; - memset (service + 1, 0, descriptor->n_methods * sizeof (GenericHandler)); -} - -void protobuf_c_service_destroy (ProtobufCService *service) -{ - service->destroy (service); -} - -/* --- querying the descriptors --- */ -const ProtobufCEnumValue * -protobuf_c_enum_descriptor_get_value_by_name - (const ProtobufCEnumDescriptor *desc, - const char *name) -{ - unsigned start = 0, count = desc->n_value_names; - while (count > 1) - { - unsigned mid = start + count / 2; - int rv = strcmp (desc->values_by_name[mid].name, name); - if (rv == 0) - return desc->values + desc->values_by_name[mid].index; - else if (rv < 0) - { - count = start + count - (mid + 1); - start = mid + 1; - } - else - count = mid - start; - } - if (count == 0) - return NULL; - if (strcmp (desc->values_by_name[start].name, name) == 0) - return desc->values + desc->values_by_name[start].index; - return NULL; -} -const ProtobufCEnumValue * -protobuf_c_enum_descriptor_get_value - (const ProtobufCEnumDescriptor *desc, - int value) -{ - int rv = int_range_lookup (desc->n_value_ranges, desc->value_ranges, value); - if (rv < 0) - return NULL; - return desc->values + rv; -} - -const ProtobufCFieldDescriptor * -protobuf_c_message_descriptor_get_field_by_name - (const ProtobufCMessageDescriptor *desc, - const char *name) -{ - unsigned start = 0, count = desc->n_fields; - const ProtobufCFieldDescriptor *field; - while (count > 1) - { - unsigned mid = start + count / 2; - int rv; - field = desc->fields + desc->fields_sorted_by_name[mid]; - rv = strcmp (field->name, name); - if (rv == 0) - return field; - else if (rv < 0) - { - count = start + count - (mid + 1); - start = mid + 1; - } - else - count = mid - start; - } - if (count == 0) - return NULL; - field = desc->fields + desc->fields_sorted_by_name[start]; - if (strcmp (field->name, name) == 0) - return field; - return NULL; -} - -const ProtobufCFieldDescriptor * -protobuf_c_message_descriptor_get_field - (const ProtobufCMessageDescriptor *desc, - unsigned value) -{ - int rv = int_range_lookup (desc->n_field_ranges, - desc->field_ranges, - value); - if (rv < 0) - return NULL; - return desc->fields + rv; -} - -const ProtobufCMethodDescriptor * -protobuf_c_service_descriptor_get_method_by_name - (const ProtobufCServiceDescriptor *desc, - const char *name) -{ - unsigned start = 0, count = desc->n_methods; - while (count > 1) - { - unsigned mid = start + count / 2; - unsigned mid_index = desc->method_indices_by_name[mid]; - const char *mid_name = desc->methods[mid_index].name; - int rv = strcmp (mid_name, name); - if (rv == 0) - return desc->methods + desc->method_indices_by_name[mid]; - if (rv < 0) - { - count = start + count - (mid + 1); - start = mid + 1; - } - else - { - count = mid - start; - } - } - if (count == 0) - return NULL; - if (strcmp (desc->methods[desc->method_indices_by_name[start]].name, name) == 0) - return desc->methods + desc->method_indices_by_name[start]; - return NULL; -} |