Convert ssl3_read_bytes() to use SSLfatal()

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4841)

diff --git a/ssl/record/rec_layer_s3.c b/ssl/record/rec_layer_s3.c
index 8faf661ddce46d77464b99867382a1d68e868245..99db04183002bf1e5a4be29b54e502739c6f45bf 100644 (file)
--- a/ssl/record/rec_layer_s3.c
+++ b/ssl/record/rec_layer_s3.c
@@ -1152,7 +1152,7 @@ int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, size_t len,
 int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
                     size_t len, int peek, size_t *readbytes)
 {
-    int al, i, j, ret;
+    int i, j, ret;
     size_t n, curr_rec, num_recs, totalbytes;
     SSL3_RECORD *rr;
     SSL3_BUFFER *rbuf;
@@ -1172,7 +1172,8 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
          && (type != SSL3_RT_HANDSHAKE)) || (peek
                                              && (type !=
                                                  SSL3_RT_APPLICATION_DATA))) {
-        SSLerr(SSL_F_SSL3_READ_BYTES, ERR_R_INTERNAL_ERROR);
+        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_READ_BYTES,
+                 ERR_R_INTERNAL_ERROR);
         return -1;
     }
 
@@ -1209,12 +1210,11 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
     if (!ossl_statem_get_in_handshake(s) && SSL_in_init(s)) {
         /* type == SSL3_RT_APPLICATION_DATA */
         i = s->handshake_func(s);
+        /* SSLfatal() already called */
         if (i < 0)
             return i;
-        if (i == 0) {
-            SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_SSL_HANDSHAKE_FAILURE);
+        if (i == 0)
             return -1;
-        }
     }
  start:
     s->rwstate = SSL_NOTHING;
@@ -1233,14 +1233,16 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
         /* get new records if necessary */
         if (num_recs == 0) {
             ret = ssl3_get_record(s);
-            if (ret <= 0)
+            if (ret <= 0) {
+                /* SSLfatal() already called if appropriate */
                 return ret;
+            }
             num_recs = RECORD_LAYER_get_numrpipes(&s->rlayer);
             if (num_recs == 0) {
                 /* Shouldn't happen */
-                al = SSL_AD_INTERNAL_ERROR;
-                SSLerr(SSL_F_SSL3_READ_BYTES, ERR_R_INTERNAL_ERROR);
-                goto f_err;
+                SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_READ_BYTES,
+                         ERR_R_INTERNAL_ERROR);
+                return -1;
             }
         }
         /* Skip over any records we have already read */
@@ -1268,9 +1270,9 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
     if (s->s3->change_cipher_spec /* set when we receive ChangeCipherSpec,
                                    * reset by ssl3_get_finished */
         && (SSL3_RECORD_get_type(rr) != SSL3_RT_HANDSHAKE)) {
-        al = SSL_AD_UNEXPECTED_MESSAGE;
-        SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_DATA_BETWEEN_CCS_AND_FINISHED);
-        goto f_err;
+        SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                 SSL_R_DATA_BETWEEN_CCS_AND_FINISHED);
+        return -1;
     }
 
     /*
@@ -1298,17 +1300,17 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
          */
         if (SSL_in_init(s) && (type == SSL3_RT_APPLICATION_DATA) &&
             (s->enc_read_ctx == NULL)) {
-            al = SSL_AD_UNEXPECTED_MESSAGE;
-            SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_APP_DATA_IN_HANDSHAKE);
-            goto f_err;
+            SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                     SSL_R_APP_DATA_IN_HANDSHAKE);
+            return -1;
         }
 
         if (type == SSL3_RT_HANDSHAKE
             && SSL3_RECORD_get_type(rr) == SSL3_RT_CHANGE_CIPHER_SPEC
             && s->rlayer.handshake_fragment_len > 0) {
-            al = SSL_AD_UNEXPECTED_MESSAGE;
-            SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_CCS_RECEIVED_EARLY);
-            goto f_err;
+            SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                     SSL_R_CCS_RECEIVED_EARLY);
+            return -1;
         }
 
         if (recvd_type != NULL)
@@ -1383,9 +1385,9 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
          * initial ClientHello. Therefore |type| should always be equal to
          * |rr->type|. If not then something has gone horribly wrong
          */
-        al = SSL_AD_INTERNAL_ERROR;
-        SSLerr(SSL_F_SSL3_READ_BYTES, ERR_R_INTERNAL_ERROR);
-        goto f_err;
+        SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_READ_BYTES,
+                 ERR_R_INTERNAL_ERROR);
+        return -1;
     }
 
     if (s->method->version == TLS_ANY_VERSION
@@ -1397,9 +1399,9 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
          * other than a ClientHello if we are a server.
          */
         s->version = rr->rec_version;
-        al = SSL_AD_UNEXPECTED_MESSAGE;
-        SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_UNEXPECTED_MESSAGE);
-        goto f_err;
+        SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                 SSL_R_UNEXPECTED_MESSAGE);
+        return -1;
     }
 
     /*
@@ -1472,9 +1474,9 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
                 || !PACKET_get_1(&alert, &alert_level)
                 || !PACKET_get_1(&alert, &alert_descr)
                 || PACKET_remaining(&alert) != 0) {
-            al = SSL_AD_UNEXPECTED_MESSAGE;
-            SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_INVALID_ALERT);
-            goto f_err;
+            SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                     SSL_R_INVALID_ALERT);
+            return -1;
         }
 
         if (s->msg_callback)
@@ -1497,9 +1499,9 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
 
             s->rlayer.alert_count++;
             if (s->rlayer.alert_count == MAX_WARN_ALERT_COUNT) {
-                al = SSL_AD_UNEXPECTED_MESSAGE;
-                SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_TOO_MANY_WARN_ALERTS);
-                goto f_err;
+                SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                         SSL_R_TOO_MANY_WARN_ALERTS);
+                return -1;
             }
 
             if (alert_descr == SSL_AD_CLOSE_NOTIFY) {
@@ -1511,9 +1513,9 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
              * is user_cancelled - which we just ignore.
              */
             if (SSL_IS_TLS13(s) && alert_descr != SSL_AD_USER_CANCELLED) {
-                al = SSL_AD_ILLEGAL_PARAMETER;
-                SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_UNKNOWN_ALERT_TYPE);
-                goto f_err;
+                SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL3_READ_BYTES,
+                         SSL_R_UNKNOWN_ALERT_TYPE);
+                return -1;
             }
             /*
              * This is a warning but we receive it if we requested
@@ -1524,26 +1526,27 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
              * the peer refused it where we carry on.
              */
             if (alert_descr == SSL_AD_NO_RENEGOTIATION) {
-                al = SSL_AD_HANDSHAKE_FAILURE;
-                SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_NO_RENEGOTIATION);
-                goto f_err;
+                SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL3_READ_BYTES,
+                         SSL_R_NO_RENEGOTIATION);
+                return -1;
             }
         } else if (alert_level == SSL3_AL_FATAL) {
             char tmp[16];
 
             s->rwstate = SSL_NOTHING;
             s->s3->fatal_alert = alert_descr;
-            SSLerr(SSL_F_SSL3_READ_BYTES, SSL_AD_REASON_OFFSET + alert_descr);
-            BIO_snprintf(tmp, sizeof(tmp), "%d", alert_descr);
+            SSLfatal(s, SSL_AD_NO_ALERT, SSL_F_SSL3_READ_BYTES,
+                     SSL_AD_REASON_OFFSET + alert_descr);
+            BIO_snprintf(tmp, sizeof tmp, "%d", alert_descr);
             ERR_add_error_data(2, "SSL alert number ", tmp);
             s->shutdown |= SSL_RECEIVED_SHUTDOWN;
             SSL3_RECORD_set_read(rr);
             SSL_CTX_remove_session(s->session_ctx, s->session);
             return 0;
         } else {
-            al = SSL_AD_ILLEGAL_PARAMETER;
-            SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_UNKNOWN_ALERT_TYPE);
-            goto f_err;
+            SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL3_READ_BYTES,
+                     SSL_R_UNKNOWN_ALERT_TYPE);
+            return -1;
         }
 
         goto start;
@@ -1558,9 +1561,9 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
     }
 
     if (SSL3_RECORD_get_type(rr) == SSL3_RT_CHANGE_CIPHER_SPEC) {
-        al = SSL_AD_UNEXPECTED_MESSAGE;
-        SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_CCS_RECEIVED_EARLY);
-        goto f_err;
+        SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                 SSL_R_CCS_RECEIVED_EARLY);
+        return -1;
     }
 
     /*
@@ -1575,10 +1578,10 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
         ossl_statem_set_in_init(s, 1);
 
         i = s->handshake_func(s);
+        /* SSLfatal() already called if appropriate */
         if (i < 0)
             return i;
         if (i == 0) {
-            SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_SSL_HANDSHAKE_FAILURE);
             return -1;
         }
 
@@ -1619,9 +1622,9 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
          * no progress is being made and the peer continually sends unrecognised
          * record types, using up resources processing them.
          */
-        al = SSL_AD_UNEXPECTED_MESSAGE;
-        SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_UNEXPECTED_RECORD);
-        goto f_err;
+        SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                 SSL_R_UNEXPECTED_RECORD);
+        return -1;
     case SSL3_RT_CHANGE_CIPHER_SPEC:
     case SSL3_RT_ALERT:
     case SSL3_RT_HANDSHAKE:
@@ -1630,9 +1633,9 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
          * SSL3_RT_HANDSHAKE when ossl_statem_get_in_handshake(s) is true, but
          * that should not happen when type != rr->type
          */
-        al = SSL_AD_UNEXPECTED_MESSAGE;
-        SSLerr(SSL_F_SSL3_READ_BYTES, ERR_R_INTERNAL_ERROR);
-        goto f_err;
+        SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                 ERR_R_INTERNAL_ERROR);
+        return -1;
     case SSL3_RT_APPLICATION_DATA:
         /*
          * At this point, we were expecting handshake data, but have
@@ -1657,21 +1660,16 @@ int ssl3_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
             if (!early_data_count_ok(s, rr->length,
                                      EARLY_DATA_CIPHERTEXT_OVERHEAD, 0)) {
                 /* SSLfatal() already called */
-                goto f_err;
+                return -1;
             }
             SSL3_RECORD_set_read(rr);
             goto start;
         } else {
-            al = SSL_AD_UNEXPECTED_MESSAGE;
-            SSLerr(SSL_F_SSL3_READ_BYTES, SSL_R_UNEXPECTED_RECORD);
-            goto f_err;
+            SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_SSL3_READ_BYTES,
+                     SSL_R_UNEXPECTED_RECORD);
+            return -1;
         }
     }
-    /* not reached */
-
- f_err:
-    ssl3_send_alert(s, SSL3_AL_FATAL, al);
-    return -1;
 }
 
 void ssl3_record_sequence_update(unsigned char *seq)