From 7d9b4fa9775a3f83e4a735506e02cb18f1e30481 Mon Sep 17 00:00:00 2001 From: Jinhyung Choi Date: Mon, 29 Jul 2013 23:23:13 +0900 Subject: [PATCH] qemu: added protobuf-c library for static linking Signed-off-by: Jinhyung Choi --- tizen/src/Makefile.tizen | 2 +- tizen/src/genmsg/ecs.pb-c.h | 2 +- tizen/src/protobuf-c-private.h | 72 ++ tizen/src/protobuf-c.c | 2615 ++++++++++++++++++++++++++++++++++++++++ tizen/src/protobuf-c.h | 486 ++++++++ 5 files changed, 3175 insertions(+), 2 deletions(-) create mode 100644 tizen/src/protobuf-c-private.h create mode 100644 tizen/src/protobuf-c.c create mode 100644 tizen/src/protobuf-c.h diff --git a/tizen/src/Makefile.tizen b/tizen/src/Makefile.tizen index bb6c474..1eea398 100644 --- a/tizen/src/Makefile.tizen +++ b/tizen/src/Makefile.tizen @@ -109,7 +109,7 @@ endif obj-y += debug_ch.o # ecs -obj-y += ecs_msg.o ecs.o ecs-json-streamer.o qmp_handler.o ecs_sensor.o +obj-y += ecs_msg.o ecs.o ecs-json-streamer.o qmp_handler.o ecs_sensor.o protobuf-c.o # ecs msg obj-y += ecs.pb-c.o diff --git a/tizen/src/genmsg/ecs.pb-c.h b/tizen/src/genmsg/ecs.pb-c.h index 25d3c4a..33f0878 100644 --- a/tizen/src/genmsg/ecs.pb-c.h +++ b/tizen/src/genmsg/ecs.pb-c.h @@ -3,7 +3,7 @@ #ifndef PROTOBUF_C_ecs_2eproto__INCLUDED #define PROTOBUF_C_ecs_2eproto__INCLUDED -#include +#include "../protobuf-c.h" PROTOBUF_C_BEGIN_DECLS diff --git a/tizen/src/protobuf-c-private.h b/tizen/src/protobuf-c-private.h new file mode 100644 index 0000000..01bbd35 --- /dev/null +++ b/tizen/src/protobuf-c-private.h @@ -0,0 +1,72 @@ +/* --- protobuf-c-private.h: private structures and functions --- */ +/* + * 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. + */ + + +/* === needs to be declared for the PROTOBUF_C_BUFFER_SIMPLE_INIT macro === */ + +void protobuf_c_buffer_simple_append (ProtobufCBuffer *buffer, + size_t len, + const unsigned char *data); + +/* === stuff which needs to be declared for use in the generated code === */ + +struct _ProtobufCEnumValueIndex +{ + const char *name; + unsigned index; /* into values[] array */ +}; + +/* IntRange: helper structure for optimizing + int => index lookups + in the case where the keys are mostly consecutive values, + as they presumably are for enums and fields. + + The data structures assumes that the values in the original + array are sorted */ +struct _ProtobufCIntRange +{ + int start_value; + unsigned orig_index; + /* NOTE: the number of values in the range can + be inferred by looking at the next element's orig_index. + a dummy element is added to make this simple */ +}; + + +/* === declared for exposition on ProtobufCIntRange === */ +/* note: ranges must have an extra sentinel IntRange at the end whose + orig_index is set to the number of actual values in the original array */ +/* returns -1 if no orig_index found */ +int protobuf_c_int_ranges_lookup (unsigned n_ranges, + ProtobufCIntRange *ranges); + +#define PROTOBUF_C_SERVICE_DESCRIPTOR_MAGIC 0x14159bc3 +#define PROTOBUF_C_MESSAGE_DESCRIPTOR_MAGIC 0x28aaeef9 +#define PROTOBUF_C_ENUM_DESCRIPTOR_MAGIC 0x114315af + +/* === behind the scenes on the generated service's __init functions */ +typedef void (*ProtobufCServiceDestroy) (ProtobufCService *service); +void +protobuf_c_service_generated_init (ProtobufCService *service, + const ProtobufCServiceDescriptor *descriptor, + ProtobufCServiceDestroy destroy); + +void +protobuf_c_service_invoke_internal(ProtobufCService *service, + unsigned method_index, + const ProtobufCMessage *input, + ProtobufCClosure closure, + void *closure_data); diff --git a/tizen/src/protobuf-c.c b/tizen/src/protobuf-c.c new file mode 100644 index 0000000..eb915e2 --- /dev/null +++ b/tizen/src/protobuf-c.c @@ -0,0 +1,2615 @@ +/* --- 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 + */ + +#if HAVE_PROTOBUF_C_CONFIG_H +#include "protobuf-c-config.h" +#endif +#include /* for occasional printf()s */ +#include /* for abort(), malloc() etc */ +#include /* for strlen(), memcpy(), memmove() */ +#if HAVE_ALLOCA_H +#include +#elif HAVE_MALLOC_H +#include +#endif + +#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 = (uint32_t )(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 = (uint32_t )(value>>32); + uint32_t lo = (uint32_t )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, void *out) +{ +#if IS_LITTLE_ENDIAN + memcpy (out, &value, 4); +#else + uint8_t *buf = out; + buf[0] = value; + buf[1] = value>>8; + buf[2] = value>>16; + buf[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, void *out) +{ +#if 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) +{ +#if 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], (uint32_t*)out + i); +#endif +} +static void +copy_to_little_endian_64 (void *out, const void *in, unsigned N) +{ +#if 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], (uint64_t*)out + 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: +#if 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: +#if 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; + +no_packing_needed: + buffer->append (buffer, rv, array); + return rv; +} + +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); + assert (tmp == payload_len); + 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< 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) +{ +#if 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; + uint64_t rv; + if (len < 5) + return parse_uint32 (len, data); + 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) +{ +#if 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 + && (def_bd == 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; +#if 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; +#if 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; + +no_unpacking_needed: + memcpy (array, at, count * siz); + *p_n += count; + return TRUE; +} + +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). */ +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<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 == NULL || 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); +} + +void +protobuf_c_message_init (const ProtobufCMessageDescriptor *descriptor, + void *message) +{ + descriptor->message_init((ProtobufCMessage*) (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; +} diff --git a/tizen/src/protobuf-c.h b/tizen/src/protobuf-c.h new file mode 100644 index 0000000..cde24bf --- /dev/null +++ b/tizen/src/protobuf-c.h @@ -0,0 +1,486 @@ +/* --- protobuf-c.h: public protobuf c runtime api --- */ + +/* + * 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. + */ + +#ifndef __PROTOBUF_C_RUNTIME_H_ +#define __PROTOBUF_C_RUNTIME_H_ + +#include +#include + +#ifdef __cplusplus +# define PROTOBUF_C_BEGIN_DECLS extern "C" { +# define PROTOBUF_C_END_DECLS } +#else +# define PROTOBUF_C_BEGIN_DECLS +# define PROTOBUF_C_END_DECLS +#endif + +#if !defined(PROTOBUF_C_NO_DEPRECATED) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) +#define PROTOBUF_C_DEPRECATED __attribute__((__deprecated__)) +#else +#define PROTOBUF_C_DEPRECATED +#endif + +/* Define int32_t, int64_t, uint32_t, uint64_t, uint8_t. + + Usually, just include to do the work. + XXX: should we use stdint.h? + */ +#ifndef PROTOBUF_C_SKIP_INTTYPES_H +# if defined(_MSC_VER) + /* On windows, in ms visual studio, define the types ourselves */ +# define int32_t signed __int32 +# define INT32_MIN _I32_MIN +# define INT32_MAX _I32_MAX +# define uint32_t unsigned __int32 +# define UINT32_MIN _UI32_MIN +# define UINT32_MAX _UI32_MAX +# define int64_t signed __int64 +# define INT64_MIN _I64_MIN +# define INT64_MAX _I64_MAX +# define uint64_t unsigned __int64 +# define UINT64_MIN _UI64_MIN +# define UINT64_MAX _UI64_MAX +# define uint8_t unsigned char +# else + /* Use the system inttypes.h */ +# include +# endif +#endif + +#if defined(_WIN32) && defined(PROTOBUF_C_USE_SHARED_LIB) + +# ifdef PROTOBUF_C_EXPORT +# define PROTOBUF_C_API __declspec(dllexport) +# else +# define PROTOBUF_C_API __declspec(dllimport) +#endif + +#else +# define PROTOBUF_C_API +#endif + +PROTOBUF_C_BEGIN_DECLS + +typedef enum +{ + PROTOBUF_C_LABEL_REQUIRED, + PROTOBUF_C_LABEL_OPTIONAL, + PROTOBUF_C_LABEL_REPEATED +} ProtobufCLabel; + +typedef enum +{ + PROTOBUF_C_TYPE_INT32, + PROTOBUF_C_TYPE_SINT32, + PROTOBUF_C_TYPE_SFIXED32, + PROTOBUF_C_TYPE_INT64, + PROTOBUF_C_TYPE_SINT64, + PROTOBUF_C_TYPE_SFIXED64, + PROTOBUF_C_TYPE_UINT32, + PROTOBUF_C_TYPE_FIXED32, + PROTOBUF_C_TYPE_UINT64, + PROTOBUF_C_TYPE_FIXED64, + PROTOBUF_C_TYPE_FLOAT, + PROTOBUF_C_TYPE_DOUBLE, + PROTOBUF_C_TYPE_BOOL, + PROTOBUF_C_TYPE_ENUM, + PROTOBUF_C_TYPE_STRING, + PROTOBUF_C_TYPE_BYTES, + //PROTOBUF_C_TYPE_GROUP, // NOT SUPPORTED + PROTOBUF_C_TYPE_MESSAGE, +} ProtobufCType; + + +typedef int protobuf_c_boolean; +#define PROTOBUF_C_OFFSETOF(struct, member) offsetof(struct, member) + +#define PROTOBUF_C_ASSERT(condition) assert(condition) +#define PROTOBUF_C_ASSERT_NOT_REACHED() assert(0) + +typedef struct _ProtobufCBinaryData ProtobufCBinaryData; +struct _ProtobufCBinaryData +{ + size_t len; + uint8_t *data; +}; + +typedef struct _ProtobufCIntRange ProtobufCIntRange; /* private */ + +/* --- memory management --- */ +typedef struct _ProtobufCAllocator ProtobufCAllocator; +struct _ProtobufCAllocator +{ + void *(*alloc)(void *allocator_data, size_t size); + void (*free)(void *allocator_data, void *pointer); + void *(*tmp_alloc)(void *allocator_data, size_t size); + unsigned max_alloca; + void *allocator_data; +}; + +/* This is a configurable allocator. + * By default, it uses the system allocator (meaning malloc() and free()). + * This is typically changed to adapt to frameworks that provide + * some nonstandard allocation functions. + * + * NOTE: you may modify this allocator. + */ +extern PROTOBUF_C_API ProtobufCAllocator protobuf_c_default_allocator; /* settable */ + +/* This is the system allocator, meaning it uses malloc() and free(). + * + * NOTE: please do NOT modify this allocator. + */ +extern PROTOBUF_C_API ProtobufCAllocator protobuf_c_system_allocator; /* use malloc, free etc */ + +/* This is the function that our default allocators call when they + run out-of-memory. The default behavior of this function is to + terminate your program. */ +extern PROTOBUF_C_API void (*protobuf_c_out_of_memory) (void); + +/* --- append-only data buffer --- */ +typedef struct _ProtobufCBuffer ProtobufCBuffer; +struct _ProtobufCBuffer +{ + void (*append)(ProtobufCBuffer *buffer, + size_t len, + const uint8_t *data); +}; +/* --- enums --- */ +typedef struct _ProtobufCEnumValue ProtobufCEnumValue; +typedef struct _ProtobufCEnumValueIndex ProtobufCEnumValueIndex; +typedef struct _ProtobufCEnumDescriptor ProtobufCEnumDescriptor; + +/* ProtobufCEnumValue: this represents a single value of + * an enumeration. + * 'name' is the string identifying this value, as given in the .proto file. + * 'c_name' is the full name of the C enumeration value. + * 'value' is the number assigned to this value, as given in the .proto file. + */ +struct _ProtobufCEnumValue +{ + const char *name; + const char *c_name; + int value; +}; + +/* ProtobufCEnumDescriptor: the represents the enum as a whole, + * with all its values. + * 'magic' is a code we check to ensure that the api is used correctly. + * 'name' is the qualified name (e.g. "namespace.Type"). + * 'short_name' is the unqualified name ("Type"), as given in the .proto file. + * 'package_name' is the '.'-separated namespace + * 'n_values' is the number of distinct values. + * 'values' is the array of distinct values. + * 'n_value_names' number of named values (including aliases). + * 'value_names' are the named values (including aliases). + * + * The rest of the values are private essentially. + * + * see also: Use protobuf_c_enum_descriptor_get_value_by_name() + * and protobuf_c_enum_descriptor_get_value() to efficiently + * lookup values in the descriptor. + */ +struct _ProtobufCEnumDescriptor +{ + uint32_t magic; + + const char *name; + const char *short_name; + const char *c_name; + const char *package_name; + + /* sorted by value */ + unsigned n_values; + const ProtobufCEnumValue *values; + + /* sorted by name */ + unsigned n_value_names; + const ProtobufCEnumValueIndex *values_by_name; + + /* value-ranges, for faster lookups by number */ + unsigned n_value_ranges; + const ProtobufCIntRange *value_ranges; + + void *reserved1; + void *reserved2; + void *reserved3; + void *reserved4; +}; + +/* --- messages --- */ +typedef struct _ProtobufCMessageDescriptor ProtobufCMessageDescriptor; +typedef struct _ProtobufCFieldDescriptor ProtobufCFieldDescriptor; +typedef struct _ProtobufCMessage ProtobufCMessage; +typedef void (*ProtobufCMessageInit)(ProtobufCMessage *); +/* ProtobufCFieldDescriptor: description of a single field + * in a message. + * 'name' is the name of the field, as given in the .proto file. + * 'id' is the code representing the field, as given in the .proto file. + * 'label' is one of PROTOBUF_C_LABEL_{REQUIRED,OPTIONAL,REPEATED} + * 'type' is the type of field. + * 'quantifier_offset' is the offset in bytes into the message's C structure + * for this member's "has_MEMBER" field (for optional members) or + * "n_MEMBER" field (for repeated members). + * 'offset' is the offset in bytes into the message's C structure + * for the member itself. + * 'descriptor' is a pointer to a ProtobufC{Enum,Message}Descriptor + * if type is PROTOBUF_C_TYPE_{ENUM,MESSAGE} respectively, + * otherwise NULL. + * 'default_value' is a pointer to a default value for this field, + * where allowed. + */ +struct _ProtobufCFieldDescriptor +{ + const char *name; + uint32_t id; + ProtobufCLabel label; + ProtobufCType type; + unsigned quantifier_offset; + unsigned offset; + const void *descriptor; /* for MESSAGE and ENUM types */ + const void *default_value; /* or NULL if no default-value */ + protobuf_c_boolean packed; + + unsigned reserved_flags; + void *reserved2; + void *reserved3; +}; +/* ProtobufCMessageDescriptor: description of a message. + * + * 'magic' is a code we check to ensure that the api is used correctly. + * 'name' is the qualified name (e.g. "namespace.Type"). + * 'short_name' is the unqualified name ("Type"), as given in the .proto file. + * 'c_name' is the c-formatted name of the structure + * 'package_name' is the '.'-separated namespace + * 'sizeof_message' is the size in bytes of the C structure + * representing an instance of this type of message. + * 'n_fields' is the number of known fields in this message. + * 'fields' is the fields sorted by id number. + * 'fields_sorted_by_name', 'n_field_ranges' and 'field_ranges' + * are used for looking up fields by name and id. (private) + */ +struct _ProtobufCMessageDescriptor +{ + uint32_t magic; + + const char *name; + const char *short_name; + const char *c_name; + const char *package_name; + + size_t sizeof_message; + + /* sorted by field-id */ + unsigned n_fields; + const ProtobufCFieldDescriptor *fields; + const unsigned *fields_sorted_by_name; + + /* ranges, optimization for looking up fields */ + unsigned n_field_ranges; + const ProtobufCIntRange *field_ranges; + + ProtobufCMessageInit message_init; + void *reserved1; + void *reserved2; + void *reserved3; +}; + + +/* ProtobufCMessage: an instance of a message. + * + * ProtobufCMessage is sort-of a lightweight + * base-class for all messages. + * + * In particular, ProtobufCMessage doesn't have + * any allocation policy associated with it. + * That's because it is common to create ProtobufCMessage's + * on the stack. In fact, we that's what we recommend + * for sending messages (because if you just allocate from the + * stack, then you can't really have a memory leak). + * + * This means that functions like protobuf_c_message_unpack() + * which return a ProtobufCMessage must be paired + * with a free function, like protobuf_c_message_free_unpacked(). + * + * 'descriptor' gives the locations and types of the members of message + * 'n_unknown_fields' is the number of fields we didn't recognize. + * 'unknown_fields' are fields we didn't recognize. + */ +typedef struct _ProtobufCMessageUnknownField ProtobufCMessageUnknownField; +struct _ProtobufCMessage +{ + const ProtobufCMessageDescriptor *descriptor; + unsigned n_unknown_fields; + ProtobufCMessageUnknownField *unknown_fields; +}; +#define PROTOBUF_C_MESSAGE_INIT(descriptor) { descriptor, 0, NULL } + +/* To pack a message: you have two options: + (1) you can compute the size of the message + using protobuf_c_message_get_packed_size() + then pass protobuf_c_message_pack() a buffer of + that length. + (2) Provide a virtual buffer (a ProtobufCBuffer) to + accept data as we scan through it. + */ +PROTOBUF_C_API size_t protobuf_c_message_get_packed_size(const ProtobufCMessage *message); +PROTOBUF_C_API size_t protobuf_c_message_pack (const ProtobufCMessage *message, + uint8_t *out); +PROTOBUF_C_API size_t protobuf_c_message_pack_to_buffer (const ProtobufCMessage *message, + ProtobufCBuffer *buffer); + +PROTOBUF_C_API ProtobufCMessage * + protobuf_c_message_unpack (const ProtobufCMessageDescriptor *, + ProtobufCAllocator *allocator, + size_t len, + const uint8_t *data); +PROTOBUF_C_API void protobuf_c_message_free_unpacked (ProtobufCMessage *message, + ProtobufCAllocator *allocator); + +/* WARNING: 'message' must be a block of memory + of size descriptor->sizeof_message. */ +PROTOBUF_C_API void protobuf_c_message_init (const ProtobufCMessageDescriptor *, + void *message); + +/* --- services --- */ +typedef struct _ProtobufCMethodDescriptor ProtobufCMethodDescriptor; +typedef struct _ProtobufCServiceDescriptor ProtobufCServiceDescriptor; + +struct _ProtobufCMethodDescriptor +{ + const char *name; + const ProtobufCMessageDescriptor *input; + const ProtobufCMessageDescriptor *output; +}; +struct _ProtobufCServiceDescriptor +{ + uint32_t magic; + + const char *name; + const char *short_name; + const char *c_name; + const char *package; + unsigned n_methods; + const ProtobufCMethodDescriptor *methods; /* in order from .proto file */ + const unsigned *method_indices_by_name; +}; + +typedef struct _ProtobufCService ProtobufCService; +typedef void (*ProtobufCClosure)(const ProtobufCMessage *message, + void *closure_data); +struct _ProtobufCService +{ + const ProtobufCServiceDescriptor *descriptor; + void (*invoke)(ProtobufCService *service, + unsigned method_index, + const ProtobufCMessage *input, + ProtobufCClosure closure, + void *closure_data); + void (*destroy) (ProtobufCService *service); +}; + + +void protobuf_c_service_destroy (ProtobufCService *); + + +/* --- querying the descriptors --- */ +PROTOBUF_C_API const ProtobufCEnumValue * +protobuf_c_enum_descriptor_get_value_by_name + (const ProtobufCEnumDescriptor *desc, + const char *name); +PROTOBUF_C_API const ProtobufCEnumValue * +protobuf_c_enum_descriptor_get_value + (const ProtobufCEnumDescriptor *desc, + int value); +PROTOBUF_C_API const ProtobufCFieldDescriptor * +protobuf_c_message_descriptor_get_field_by_name + (const ProtobufCMessageDescriptor *desc, + const char *name); +PROTOBUF_C_API const ProtobufCFieldDescriptor * +protobuf_c_message_descriptor_get_field + (const ProtobufCMessageDescriptor *desc, + unsigned value); +PROTOBUF_C_API const ProtobufCMethodDescriptor * +protobuf_c_service_descriptor_get_method_by_name + (const ProtobufCServiceDescriptor *desc, + const char *name); + +/* --- wire format enums --- */ +typedef enum +{ + PROTOBUF_C_WIRE_TYPE_VARINT, + PROTOBUF_C_WIRE_TYPE_64BIT, + PROTOBUF_C_WIRE_TYPE_LENGTH_PREFIXED, + PROTOBUF_C_WIRE_TYPE_START_GROUP, /* unsupported */ + PROTOBUF_C_WIRE_TYPE_END_GROUP, /* unsupported */ + PROTOBUF_C_WIRE_TYPE_32BIT +} ProtobufCWireType; + +/* --- unknown message fields --- */ +struct _ProtobufCMessageUnknownField +{ + uint32_t tag; + ProtobufCWireType wire_type; + size_t len; + uint8_t *data; +}; + +/* --- extra (superfluous) api: trivial buffer --- */ +typedef struct _ProtobufCBufferSimple ProtobufCBufferSimple; +struct _ProtobufCBufferSimple +{ + ProtobufCBuffer base; + size_t alloced; + size_t len; + uint8_t *data; + protobuf_c_boolean must_free_data; +}; +#define PROTOBUF_C_BUFFER_SIMPLE_INIT(array_of_bytes) \ +{ { protobuf_c_buffer_simple_append }, \ + sizeof(array_of_bytes), 0, (array_of_bytes), 0 } +#define PROTOBUF_C_BUFFER_SIMPLE_CLEAR(simp_buf) \ + do { if ((simp_buf)->must_free_data) \ + protobuf_c_default_allocator.free (&protobuf_c_default_allocator.allocator_data, (simp_buf)->data); } while (0) + + +typedef enum +{ + PROTOBUF_C_CTYPE_INT32, + PROTOBUF_C_CTYPE_UINT32, + PROTOBUF_C_CTYPE_INT64, + PROTOBUF_C_CTYPE_UINT64, + PROTOBUF_C_CTYPE_FLOAT, + PROTOBUF_C_CTYPE_DOUBLE, + PROTOBUF_C_CTYPE_BOOL, + PROTOBUF_C_CTYPE_ENUM, + PROTOBUF_C_CTYPE_STRING, + PROTOBUF_C_CTYPE_BYTES, + PROTOBUF_C_CTYPE_MESSAGE, +} ProtobufCCType; + +extern ProtobufCCType protobuf_c_type_to_ctype (ProtobufCType type); +#define protobuf_c_type_to_ctype(type) \ + ((ProtobufCCType)(protobuf_c_type_to_ctype_array[(type)])) + +/* ====== private ====== */ +#include "protobuf-c-private.h" + + +PROTOBUF_C_END_DECLS + +#endif /* __PROTOBUF_C_RUNTIME_H_ */ -- 2.7.4