Remove useless code

RT#4081

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>

apps/apps.c

@@ -118,9 +118,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#if !defined(OPENSSL_SYS_WIN32) && !defined(OPENSSL_SYS_WINCE) && !defined(NETWARE_CLIB)
-# include <strings.h>
-#endif
 #ifndef NO_SYS_TYPES_H
 # include <sys/types.h>
 #endif

apps/ca.c

@@ -98,24 +98,18 @@
 #undef BSIZE
 #define BSIZE 256
 
-#define BASE_SECTION    "ca"
+#define BASE_SECTION            "ca"
 
 #define ENV_DEFAULT_CA          "default_ca"
 
-#define STRING_MASK     "string_mask"
+#define STRING_MASK             "string_mask"
 #define UTF8_IN                 "utf8"
 
-#define ENV_DIR                 "dir"
-#define ENV_CERTS               "certs"
-#define ENV_CRL_DIR             "crl_dir"
-#define ENV_CA_DB               "CA_DB"
 #define ENV_NEW_CERTS_DIR       "new_certs_dir"
-#define ENV_CERTIFICATE "certificate"
+#define ENV_CERTIFICATE         "certificate"
 #define ENV_SERIAL              "serial"
 #define ENV_CRLNUMBER           "crlnumber"
-#define ENV_CRL                 "crl"
 #define ENV_PRIVATE_KEY         "private_key"
-#define ENV_RANDFILE            "RANDFILE"
 #define ENV_DEFAULT_DAYS        "default_days"
 #define ENV_DEFAULT_STARTDATE   "default_startdate"
 #define ENV_DEFAULT_ENDDATE     "default_enddate"

apps/ecparam.c

@@ -317,8 +317,6 @@ int ecparam_main(int argc, char **argv)
     }
 
     if (check) {
-        if (group == NULL)
-            BIO_printf(bio_err, "no elliptic curve parameters\n");
         BIO_printf(bio_err, "checking elliptic curve parameters: ");
         if (!EC_GROUP_check(group, NULL)) {
             BIO_printf(bio_err, "failed\n");

apps/engine.c

@@ -94,17 +94,12 @@ static void identity(char *ptr)
 
 static int append_buf(char **buf, const char *s, int *size, int step)
 {
-    int l = strlen(s);
-
     if (*buf == NULL) {
         *size = step;
         *buf = app_malloc(*size, "engine buffer");
         **buf = '\0';
     }
 
-    if (**buf != '\0')
-        l += 2;                 /* ", " */
-
     if (strlen(*buf) + strlen(s) >= (unsigned int)*size) {
         *size += step;
         *buf = OPENSSL_realloc(*buf, *size);

apps/gendsa.c

@@ -69,8 +69,6 @@
 # include <openssl/x509.h>
 # include <openssl/pem.h>
 
-# define DEFBITS 512
-
 typedef enum OPTION_choice {
     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
     OPT_OUT, OPT_PASSOUT, OPT_ENGINE, OPT_RAND, OPT_CIPHER

crypto/bio/b_dump.c

@@ -104,7 +104,6 @@ int BIO_dump_indent_cb(int (*cb) (const void *data, size_t len, void *u),
     if ((rows * dump_width) < len)
         rows++;
     for (i = 0; i < rows; i++) {
-        buf[0] = '\0';          /* start with empty string */
         BUF_strlcpy(buf, str, sizeof buf);
         BIO_snprintf(tmp, sizeof tmp, "%04x - ", i * dump_width);
         BUF_strlcat(buf, tmp, sizeof buf);

crypto/dsa/dsa_gen.c

@@ -83,16 +83,8 @@ int DSA_generate_parameters_ex(DSA *ret, int bits,
         return ret->meth->dsa_paramgen(ret, bits, seed_in, seed_len,
                                        counter_ret, h_ret, cb);
     else {
-        const EVP_MD *evpmd;
+        const EVP_MD *evpmd = bits >= 2048 ? EVP_sha256() : EVP_sha1();
-        size_t qbits = bits >= 2048 ? 256 : 160;
+        size_t qbits = EVP_MD_size(evpmd) * 8;
-
-        if (bits >= 2048) {
-            qbits = 256;
-            evpmd = EVP_sha256();
-        } else {
-            qbits = 160;
-            evpmd = EVP_sha1();
-        }
 
         return dsa_builtin_paramgen(ret, bits, qbits, evpmd,
                                     seed_in, seed_len, NULL, counter_ret,

crypto/evp/e_aes_cbc_hmac_sha256.c

@@ -820,8 +820,6 @@ static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
             if (arg != EVP_AEAD_TLS1_AAD_LEN)
                 return -1;
 
-            len = p[arg - 2] << 8 | p[arg - 1];
-
             if (ctx->encrypt) {
                 key->payload_length = len;
                 if ((key->aux.tls_ver =

crypto/evp/e_dsa.c

@@ -1,69 +0,0 @@
-/* crypto/evp/e_dsa.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to.  The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *    "This product includes cryptographic software written by
- *     Eric Young (eay@cryptsoft.com)"
- *    The word 'cryptographic' can be left out if the rouines from the library
- *    being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- *    the apps directory (application code) you must include an acknowledgement:
- *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed.  i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-
-#include <stdio.h>
-#include "internal/cryptlib.h"
-#include <openssl/evp.h>
-#include <openssl/objects.h>
-#include <openssl/x509.h>
-
-static EVP_PKEY_METHOD dss_method = {
-    DSA_sign,
-    DSA_verify,
-    {EVP_PKEY_DSA, EVP_PKEY_DSA2, EVP_PKEY_DSA3, NULL},
-};

crypto/ocsp/ocsp_lib.c

@@ -242,12 +242,6 @@ int OCSP_parse_url(const char *url, char **phost, char **pport, char **ppath,
     if ((p = strchr(p, ':'))) {
         *p = 0;
         port = p + 1;
-    } else {
-        /* Not found: set default port */
-        if (*pssl)
-            port = "443";
-        else
-            port = "80";
     }
 
     *pport = BUF_strdup(port);

crypto/ocsp/ocsp_prn.c

@@ -213,7 +213,6 @@ int OCSP_RESPONSE_print(BIO *bp, OCSP_RESPONSE *o, unsigned long flags)
         return 1;
     }
 
-    i = ASN1_STRING_length(rb->response);
     if ((br = OCSP_response_get1_basic(o)) == NULL)
         goto err;
     rd = &br->tbsResponseData;

crypto/pem/pvkfmt.c

@@ -617,13 +617,11 @@ static int do_PVK_header(const unsigned char **in, unsigned int length,
             PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_PVK_TOO_SHORT);
             return 0;
         }
-        length -= 20;
     } else {
         if (length < 24) {
             PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_PVK_TOO_SHORT);
             return 0;
         }
-        length -= 24;
         pvk_magic = read_ledword(&p);
         if (pvk_magic != MS_PVKMAGIC) {
             PEMerr(PEM_F_DO_PVK_HEADER, PEM_R_BAD_MAGIC_NUMBER);

crypto/pkcs7/pk7_doit.c

@@ -1089,7 +1089,6 @@ PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
     rsk = p7->d.signed_and_enveloped->recipientinfo;
     if (rsk == NULL)
         return NULL;
-    ri = sk_PKCS7_RECIP_INFO_value(rsk, 0);
     if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx)
         return (NULL);
     ri = sk_PKCS7_RECIP_INFO_value(rsk, idx);

crypto/x509/t_crl.c

@@ -96,7 +96,6 @@ int X509_CRL_print(BIO *out, X509_CRL *x)
     l = X509_CRL_get_version(x);
     BIO_printf(out, "%8sVersion %lu (0x%lx)\n", "", l + 1, l);
     X509_CRL_get0_signature(&sig, &sig_alg, x);
-    i = X509_CRL_get_signature_nid(x);
     X509_signature_print(out, sig_alg, NULL);
     p = X509_NAME_oneline(X509_CRL_get_issuer(x), NULL, 0);
     BIO_printf(out, "%8sIssuer: %s\n", "", p);

crypto/x509/x509_lu.c

@@ -523,8 +523,6 @@ STACK_OF(X509_CRL) *X509_STORE_get1_crls(X509_STORE_CTX *ctx, X509_NAME *nm)
     X509_OBJECT *obj, xobj;
     sk = sk_X509_CRL_new_null();
     CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
-    /* Check cache first */
-    idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_CRL, nm, &cnt);
 
     /*
      * Always do lookup to possibly add new CRLs to cache

ssl/s3_clnt.c

@@ -3102,7 +3102,6 @@ int ssl3_send_client_certificate(SSL *s)
          * If we get an error, we need to ssl->rwstate=SSL_X509_LOOKUP;
          * return(-1); We then get retied later
          */
-        i = 0;
         i = ssl_do_client_cert_cb(s, &x509, &pkey);
         if (i < 0) {
             s->rwstate = SSL_X509_LOOKUP;

ssl/s3_srvr.c

@@ -370,7 +370,6 @@ int ssl3_accept(SSL *s)
                      */
                     if (al != TLS1_AD_UNKNOWN_PSK_IDENTITY)
                         SSLerr(SSL_F_SSL3_ACCEPT, SSL_R_CLIENTHELLO_TLSEXT);
-                    ret = SSL_TLSEXT_ERR_ALERT_FATAL;
                     ret = -1;
                     s->state = SSL_ST_ERR;
                     goto end;

ssl/t1_lib.c

@@ -3938,7 +3938,6 @@ int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
         idx = ssl_cert_type(x, pk);
         if (idx == -1)
             return 0;
-        cpk = c->pkeys + idx;
         pvalid = s->s3->tmp.valid_flags + idx;
 
         if (c->cert_flags & SSL_CERT_FLAGS_CHECK_TLS_STRICT)

test/evp_test.c

@@ -639,7 +639,7 @@ struct digest_data {
 static int digest_test_init(struct evp_test *t, const char *alg)
 {
     const EVP_MD *digest;
-    struct digest_data *mdat = t->data;
+    struct digest_data *mdat;
     digest = EVP_get_digestbyname(alg);
     if (!digest) {
         /* If alg has an OID assume disabled algorithm */