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drop some redundant checking.

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This commit is contained in:
linsc 2022-11-15 16:54:53 +08:00
parent a43cc05651
commit 65e605a10d
2 changed files with 4 additions and 12 deletions
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8
src/liblsquic/lsquic_enc_sess_ietf.c
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@ -2240,6 +2240,7 @@ iquic_esf_decrypt_packet (enc_session_t *enc_session_p,
enum enc_level enc_level; enum enc_level enc_level;
enum packnum_space pns; enum packnum_space pns;
lsquic_packno_t packno; lsquic_packno_t packno;
size_t out_sz;
enum dec_packin dec_packin; enum dec_packin dec_packin;
int s; int s;
/* 16Bytes: AEAD authentication tag /* 16Bytes: AEAD authentication tag
@ -2251,17 +2252,12 @@ iquic_esf_decrypt_packet (enc_session_t *enc_session_p,
* These cipher suites have a 16-byte authentication tag and * These cipher suites have a 16-byte authentication tag and
* produce an output 16 bytes larger than their input. * produce an output 16 bytes larger than their input.
*/ */
size_t out_sz, dst_sz; const size_t dst_sz = packet_in->pi_data_sz - IQUIC_TAG_LEN;
unsigned char new_secret[EVP_MAX_KEY_LENGTH]; unsigned char new_secret[EVP_MAX_KEY_LENGTH];
struct crypto_ctx crypto_ctx_buf; struct crypto_ctx crypto_ctx_buf;
char secret_str[EVP_MAX_KEY_LENGTH * 2 + 1]; char secret_str[EVP_MAX_KEY_LENGTH * 2 + 1];
char errbuf[ERR_ERROR_STRING_BUF_LEN]; char errbuf[ERR_ERROR_STRING_BUF_LEN];
if (packet_in->pi_data_sz <= 16) {
dec_packin = DECPI_TOO_SHORT;
goto err;
}
dst_sz = packet_in->pi_data_sz - 16;
dst = lsquic_mm_get_packet_in_buf(&enpub->enp_mm, dst_sz); dst = lsquic_mm_get_packet_in_buf(&enpub->enp_mm, dst_sz);
if (!dst) if (!dst)
{ {

8
src/liblsquic/lsquic_handshake.c
View file

@ -4177,15 +4177,11 @@ gquic2_esf_decrypt_packet (enc_session_t *enc_session_p,
unsigned sample_off, packno_len, divers_nonce_len; unsigned sample_off, packno_len, divers_nonce_len;
enum gel gel; enum gel gel;
lsquic_packno_t packno; lsquic_packno_t packno;
size_t out_sz, dst_sz; size_t out_sz;
enum dec_packin dec_packin; enum dec_packin dec_packin;
const size_t dst_sz = packet_in->pi_data_sz - IQUIC_TAG_LEN;
char errbuf[ERR_ERROR_STRING_BUF_LEN]; char errbuf[ERR_ERROR_STRING_BUF_LEN];
dst_sz = packet_in->pi_data_sz - 16;
if (dst_sz <= 16) {
dec_packin = DECPI_TOO_SHORT;
goto err;
}
dst = lsquic_mm_get_packet_in_buf(&enpub->enp_mm, dst_sz); dst = lsquic_mm_get_packet_in_buf(&enpub->enp_mm, dst_sz);
if (!dst) if (!dst)
{ {