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Fix 2-way auth max msg size, + some neats

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Sergio R. Caprile committed 2025-11-12 20:13:06 -03:00
1 parent e0740fc2ca
commit a35901121b
2 files changed
+20 -18
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mongoose.c
+10 -9
View File
@@ -12097,6 +12097,11 @@ static bool mg_tls_encrypt(struct mg_connection *c, const uint8_t *msg,
uint8_t *iv =
c->is_client ? tls->enc.client_write_iv : tls->enc.server_write_iv;
if (msgsz > 16384) {
MG_ERROR(("msg longer than recordsz"));
return false;
}
#if MG_ENABLE_CHACHA20
#else
mg_gcm_initialize();
@@ -12118,9 +12123,8 @@ static bool mg_tls_encrypt(struct mg_connection *c, const uint8_t *msg,
#if MG_ENABLE_CHACHA20
(void) tag; // tag is only used in aes gcm
{
size_t maxlen = MG_IO_SIZE > 16384 ? 16384 : MG_IO_SIZE;
size_t n;
uint8_t *enc = (uint8_t *) mg_calloc(1, maxlen + 256 + 1);
uint8_t *enc = (uint8_t *) mg_calloc(1, msgsz + 256 + 1);
if (enc == NULL) return false;
n = mg_chacha20_poly1305_encrypt(enc, key, nonce, associated_data,
sizeof(associated_data), outmsg,
@@ -12379,9 +12383,7 @@ static const uint8_t secp256r1_sig_algs[12] = {
static bool mg_tls_server_send_cert_request(struct mg_connection *c) {
struct tls_data *tls = (struct tls_data *) c->tls;
uint8_t *req = (uint8_t *) mg_calloc(1, 13 + sizeof(secp256r1_sig_algs));
bool res;
if (req == NULL) return false;
uint8_t req[13 + sizeof(secp256r1_sig_algs)];
req[0] = MG_TLS_CERTIFICATE_REQUEST; // handshake header
MG_STORE_BE24(req + 1, 9 + sizeof(secp256r1_sig_algs));
req[4] = 0; // context length
@@ -12392,10 +12394,8 @@ static bool mg_tls_server_send_cert_request(struct mg_connection *c) {
req + 11,
sizeof(secp256r1_sig_algs)); // signature hash algorithms length
memcpy(req + 13, (uint8_t *) secp256r1_sig_algs, sizeof(secp256r1_sig_algs));
mg_sha256_update(&tls->sha256, req, 13 + sizeof(secp256r1_sig_algs));
res = mg_tls_encrypt(c, req, 13 + sizeof(secp256r1_sig_algs), MG_TLS_HANDSHAKE);
mg_free(req);
return res;
mg_sha256_update(&tls->sha256, req, sizeof(req));
return mg_tls_encrypt(c, req, sizeof(req), MG_TLS_HANDSHAKE);
}
static bool mg_tls_send_cert(struct mg_connection *c, bool is_client) {
@@ -13312,6 +13312,7 @@ void mg_tls_handshake(struct mg_connection *c) {
struct tls_data *tls = (struct tls_data *) c->tls;
long n;
bool res;
if (c->is_closing) return; // we don't clear rx buf, so ignore what's left
if (c->is_client) {
// will clear is_hs when sending last chunk
res = mg_tls_client_handshake(c);
src/tls_builtin.c
+10 -9
View File
@@ -419,6 +419,11 @@ static bool mg_tls_encrypt(struct mg_connection *c, const uint8_t *msg,
uint8_t *iv =
c->is_client ? tls->enc.client_write_iv : tls->enc.server_write_iv;
if (msgsz > 16384) {
MG_ERROR(("msg longer than recordsz"));
return false;
}
#if MG_ENABLE_CHACHA20
#else
mg_gcm_initialize();
@@ -440,9 +445,8 @@ static bool mg_tls_encrypt(struct mg_connection *c, const uint8_t *msg,
#if MG_ENABLE_CHACHA20
(void) tag; // tag is only used in aes gcm
{
size_t maxlen = MG_IO_SIZE > 16384 ? 16384 : MG_IO_SIZE;
size_t n;
uint8_t *enc = (uint8_t *) mg_calloc(1, maxlen + 256 + 1);
uint8_t *enc = (uint8_t *) mg_calloc(1, msgsz + 256 + 1);
if (enc == NULL) return false;
n = mg_chacha20_poly1305_encrypt(enc, key, nonce, associated_data,
sizeof(associated_data), outmsg,
@@ -701,9 +705,7 @@ static const uint8_t secp256r1_sig_algs[12] = {
static bool mg_tls_server_send_cert_request(struct mg_connection *c) {
struct tls_data *tls = (struct tls_data *) c->tls;
uint8_t *req = (uint8_t *) mg_calloc(1, 13 + sizeof(secp256r1_sig_algs));
bool res;
if (req == NULL) return false;
uint8_t req[13 + sizeof(secp256r1_sig_algs)];
req[0] = MG_TLS_CERTIFICATE_REQUEST; // handshake header
MG_STORE_BE24(req + 1, 9 + sizeof(secp256r1_sig_algs));
req[4] = 0; // context length
@@ -714,10 +716,8 @@ static bool mg_tls_server_send_cert_request(struct mg_connection *c) {
req + 11,
sizeof(secp256r1_sig_algs)); // signature hash algorithms length
memcpy(req + 13, (uint8_t *) secp256r1_sig_algs, sizeof(secp256r1_sig_algs));
mg_sha256_update(&tls->sha256, req, 13 + sizeof(secp256r1_sig_algs));
res = mg_tls_encrypt(c, req, 13 + sizeof(secp256r1_sig_algs), MG_TLS_HANDSHAKE);
mg_free(req);
return res;
mg_sha256_update(&tls->sha256, req, sizeof(req));
return mg_tls_encrypt(c, req, sizeof(req), MG_TLS_HANDSHAKE);
}
static bool mg_tls_send_cert(struct mg_connection *c, bool is_client) {
@@ -1634,6 +1634,7 @@ void mg_tls_handshake(struct mg_connection *c) {
struct tls_data *tls = (struct tls_data *) c->tls;
long n;
bool res;
if (c->is_closing) return; // we don't clear rx buf, so ignore what's left
if (c->is_client) {
// will clear is_hs when sending last chunk
res = mg_tls_client_handshake(c);