diff options
Diffstat (limited to 'upb')
| -rw-r--r-- | upb/decode.c | 9 | ||||
| -rw-r--r-- | upb/encode.c | 8 |
2 files changed, 11 insertions, 6 deletions
diff --git a/upb/decode.c b/upb/decode.c index 3a44021..b09da42 100644 --- a/upb/decode.c +++ b/upb/decode.c @@ -54,18 +54,18 @@ static bool upb_decode_message(upb_decstate *d, const char *limit, static bool upb_decode_varint(const char **ptr, const char *limit, uint64_t *val) { - uint8_t byte = 0x80; + uint8_t byte; int bitpos = 0; const char *p = *ptr; *val = 0; - while (byte & 0x80) { + do { CHK(bitpos < 70 && p < limit); byte = *p; *val |= (uint64_t)(byte & 0x7F) << bitpos; p++; bitpos += 7; - } + } while (byte & 0x80); *ptr = p; return true; @@ -385,7 +385,7 @@ static bool upb_decode_fixedpacked(upb_array *arr, upb_stringview data, int elements = data.size / elem_size; void *field_mem; - CHK((data.size % elem_size) == 0); + CHK(elements * elem_size == data.size); field_mem = upb_array_add(arr, elements); CHK(field_mem); memcpy(field_mem, data.data, data.size); @@ -451,6 +451,7 @@ static bool upb_decode_toarray(upb_decstate *d, upb_decframe *frame, return upb_append_unknown(d, frame, field_start); } #undef VARINT_CASE + UPB_UNREACHABLE(); } static bool upb_decode_delimitedfield(upb_decstate *d, upb_decframe *frame, diff --git a/upb/encode.c b/upb/encode.c index 4aafb9c..e7585eb 100644 --- a/upb/encode.c +++ b/upb/encode.c @@ -32,7 +32,7 @@ static const uint8_t upb_desctype_to_fieldtype[] = { static size_t upb_encode_varint(uint64_t val, char *buf) { size_t i; - if (val == 0) { buf[0] = 0; return 1; } + if (val < 128) { buf[0] = val; return 1; } i = 0; while (val) { uint8_t byte = val & 0x7fU; @@ -373,7 +373,11 @@ char *upb_encode(const void *msg, const upb_msglayout_msginit_v1 *m, e.limit = NULL; e.ptr = NULL; - CHK(upb_encode_message(&e, msg, m, size)); + if (!upb_encode_message(&e, msg, m, size)) { + *size = 0; + return NULL; + } + *size = e.limit - e.ptr; if (*size == 0) { |