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protobuf-c
Commit f6cee05c authored by Robert Edmonds's avatar Robert Edmonds
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protobuf-c: make it a bit harder to generate output to stdio 

libraries should never generate output on their own to stdout/stderr.
remove the PRINT_UNPACK_ERRORS macro and rename UNPACK_ERROR to
PROTOBUF_C_UNPACK_ERROR.

the error strings are left in but compiled out by default. they could
theoretically be re-enabled for a debugging session by changing the
PROTOBUF_C_UNPACK_ERROR macro to something like:

	#define PROTOBUF_C_UNPACK_ERROR(...) do { fprintf(stderr, __VA_ARGS__); fputc('\n', stderr); } while (0)
parent b1a2c061
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Showing with 32 additions and 41 deletions
protobuf-c/protobuf-c.c
View file @ f6cee05c
......@@ -45,7 +45,6 @@
* 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() */
......@@ -54,10 +53,6 @@
#define TRUE 1
#define FALSE 0
#ifndef PRINT_UNPACK_ERRORS
#define PRINT_UNPACK_ERRORS 0
#endif
/* The maximum length of a 64 bit integer in varint encoding. */
#define MAX_UINT64_ENCODED_SIZE 10
......@@ -72,6 +67,10 @@
*/
#define MAX_MEMBERS_FOR_HASH_SIZE 128
#ifndef PROTOBUF_C_UNPACK_ERROR
# define PROTOBUF_C_UNPACK_ERROR(...)
#endif
#define STRUCT_MEMBER_P(struct_p, struct_offset) \
((void *) ((uint8_t *) (struct_p) + (struct_offset)))
......@@ -1387,12 +1386,6 @@ protobuf_c_message_pack_to_buffer(const ProtobufCMessage *message,
/* === 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)
{
......@@ -1492,14 +1485,13 @@ scan_length_prefixed_data(size_t len, const uint8_t *data,
break;
}
if (i == hdr_max) {
UNPACK_ERROR(("error parsing length for length-prefixed data"));
PROTOBUF_C_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));
PROTOBUF_C_UNPACK_ERROR("data too short after length-prefix of %u", val);
return 0;
}
return hdr_len + val;
......@@ -1690,7 +1682,7 @@ count_packed_elements(ProtobufCType type,
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"));
PROTOBUF_C_UNPACK_ERROR("length must be a multiple of 4 for fixed-length 32-bit types");
return FALSE;
}
*count_out = len / 4;
......@@ -1699,7 +1691,7 @@ count_packed_elements(ProtobufCType type,
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"));
PROTOBUF_C_UNPACK_ERROR("length must be a multiple of 8 for fixed-length 64-bit types");
return FALSE;
}
*count_out = len / 8;
......@@ -1720,8 +1712,7 @@ count_packed_elements(ProtobufCType type,
case PROTOBUF_C_TYPE_BYTES:
case PROTOBUF_C_TYPE_MESSAGE:
default:
UNPACK_ERROR(("bad protobuf-c type %u for packed-repeated",
type));
PROTOBUF_C_UNPACK_ERROR("bad protobuf-c type %u for packed-repeated", type);
return FALSE;
}
}
......@@ -2057,7 +2048,7 @@ parse_packed_repeated_member(ScannedMember *scanned_member,
while (rem > 0) {
unsigned s = scan_varint(rem, at);
if (s == 0) {
UNPACK_ERROR(("bad packed-repeated int32 value"));
PROTOBUF_C_UNPACK_ERROR("bad packed-repeated int32 value");
return FALSE;
}
((int32_t *) array)[count++] = parse_int32(s, at);
......@@ -2069,7 +2060,7 @@ parse_packed_repeated_member(ScannedMember *scanned_member,
while (rem > 0) {
unsigned s = scan_varint(rem, at);
if (s == 0) {
UNPACK_ERROR(("bad packed-repeated sint32 value"));
PROTOBUF_C_UNPACK_ERROR("bad packed-repeated sint32 value");
return FALSE;
}
((int32_t *) array)[count++] = unzigzag32(parse_uint32(s, at));
......@@ -2082,7 +2073,7 @@ parse_packed_repeated_member(ScannedMember *scanned_member,
while (rem > 0) {
unsigned s = scan_varint(rem, at);
if (s == 0) {
UNPACK_ERROR(("bad packed-repeated enum or uint32 value"));
PROTOBUF_C_UNPACK_ERROR("bad packed-repeated enum or uint32 value");
return FALSE;
}
((uint32_t *) array)[count++] = parse_uint32(s, at);
......@@ -2095,7 +2086,7 @@ parse_packed_repeated_member(ScannedMember *scanned_member,
while (rem > 0) {
unsigned s = scan_varint(rem, at);
if (s == 0) {
UNPACK_ERROR(("bad packed-repeated sint64 value"));
PROTOBUF_C_UNPACK_ERROR("bad packed-repeated sint64 value");
return FALSE;
}
((int64_t *) array)[count++] = unzigzag64(parse_uint64(s, at));
......@@ -2108,7 +2099,7 @@ parse_packed_repeated_member(ScannedMember *scanned_member,
while (rem > 0) {
unsigned s = scan_varint(rem, at);
if (s == 0) {
UNPACK_ERROR(("bad packed-repeated int64/uint64 value"));
PROTOBUF_C_UNPACK_ERROR("bad packed-repeated int64/uint64 value");
return FALSE;
}
((int64_t *) array)[count++] = parse_uint64(s, at);
......@@ -2120,7 +2111,7 @@ parse_packed_repeated_member(ScannedMember *scanned_member,
count = rem;
for (i = 0; i < count; i++) {
if (at[i] > 1) {
UNPACK_ERROR(("bad packed-repeated boolean value"));
PROTOBUF_C_UNPACK_ERROR("bad packed-repeated boolean value");
return FALSE;
}
((protobuf_c_boolean *) array)[i] = at[i];
......@@ -2339,8 +2330,8 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
ScannedMember tmp;
if (used == 0) {
UNPACK_ERROR(("error parsing tag/wiretype at offset %u",
(unsigned) (at - data)));
PROTOBUF_C_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! */
......@@ -2382,8 +2373,8 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
if ((at[i] & 0x80) == 0)
break;
if (i == max_len) {
UNPACK_ERROR(("unterminated varint at offset %u",
(unsigned) (at - data)));
PROTOBUF_C_UNPACK_ERROR("unterminated varint at offset %u",
(unsigned) (at - data));
goto error_cleanup_during_scan;
}
tmp.len = i + 1;
......@@ -2391,8 +2382,8 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
}
case PROTOBUF_C_WIRE_TYPE_64BIT:
if (rem < 8) {
UNPACK_ERROR(("too short after 64bit wiretype at offset %u",
(unsigned) (at - data)));
PROTOBUF_C_UNPACK_ERROR("too short after 64bit wiretype at offset %u",
(unsigned) (at - data));
goto error_cleanup_during_scan;
}
tmp.len = 8;
......@@ -2410,15 +2401,15 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
}
case PROTOBUF_C_WIRE_TYPE_32BIT:
if (rem < 4) {
UNPACK_ERROR(("too short after 32bit wiretype at offset %u",
(unsigned) (at - data)));
PROTOBUF_C_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)));
PROTOBUF_C_UNPACK_ERROR("unsupported tag %u at offset %u",
wire_type, (unsigned) (at - data));
goto error_cleanup_during_scan;
}
......@@ -2429,7 +2420,7 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
in_slab_index = 0;
if (which_slab == MAX_SCANNED_MEMBER_SLAB) {
UNPACK_ERROR(("too many fields"));
PROTOBUF_C_UNPACK_ERROR("too many fields");
goto error_cleanup_during_scan;
}
which_slab++;
......@@ -2455,7 +2446,7 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
tmp.length_prefix_len,
&count))
{
UNPACK_ERROR(("counting packed elements"));
PROTOBUF_C_UNPACK_ERROR("counting packed elements");
goto error_cleanup_during_scan;
}
*n += count;
......@@ -2500,8 +2491,8 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
!REQUIRED_FIELD_BITMAP_IS_SET(f))
{
CLEAR_REMAINING_N_PTRS();
UNPACK_ERROR(("message '%s': missing required field '%s'",
desc->name, field->name));
PROTOBUF_C_UNPACK_ERROR("message '%s': missing required field '%s'",
desc->name, field->name);
goto error_cleanup;
}
}
......@@ -2525,9 +2516,9 @@ protobuf_c_message_unpack(const ProtobufCMessageDescriptor *desc,
for (j = 0; j < max; j++) {
if (!parse_member(slab + j, rv, allocator)) {
UNPACK_ERROR(("error parsing member %s of %s",
PROTOBUF_C_UNPACK_ERROR("error parsing member %s of %s",
slab->field ? slab->field->name : "*unknown-field*",
desc->name));
desc->name);
goto error_cleanup;
}
}
......
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