Remove HEADER_X509_H and HEADER_SSL_H include detectors from apps

The HEADER_X509_H check is redundant, because <openssl/x509.h>
is already included.

Instead of of checking for HEADER_SSL_H, include <openssl/ssl.h>
explicitly in "s_apps.h" and don't include "s_apps.h" where it's
not necessary.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/9364)

apps/apps.c

@@ -40,7 +40,6 @@
 #endif
 #include <openssl/bn.h>
 #include <openssl/ssl.h>
-#include "s_apps.h"
 #include "apps.h"
 
 #ifdef _WIN32
@@ -48,6 +47,14 @@ static int WIN32_rename(const char *from, const char *to);
 # define rename(from,to) WIN32_rename((from),(to))
 #endif
 
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
+# include <conio.h>
+#endif
+
+#if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32)
+# define _kbhit kbhit
+#endif
+
 #define PASS_SOURCE_SIZE_MAX 4
 
 typedef struct {

apps/include/apps.h

@@ -102,11 +102,9 @@ typedef struct args_st {
 int wrap_password_callback(char *buf, int bufsiz, int verify, void *cb_data);
 
 int chopup_args(ARGS *arg, char *buf);
-# ifdef HEADER_X509_H
 int dump_cert_text(BIO *out, X509 *x);
 void print_name(BIO *out, const char *title, X509_NAME *nm,
                 unsigned long lflags);
-# endif
 void print_bignum_var(BIO *, const BIGNUM *, const char*,
                       int, unsigned char *);
 void print_array(BIO *, const char *, int, const unsigned char *);

apps/include/s_apps.h

@@ -9,13 +9,7 @@
 
 #include <openssl/opensslconf.h>
 
-#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
-# include <conio.h>
-#endif
-
-#if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32)
-# define _kbhit kbhit
-#endif
+#include <openssl/ssl.h>
 
 #define PORT            "4433"
 #define PROTOCOL        "tcp"
@@ -24,17 +18,15 @@ typedef int (*do_server_cb)(int s, int stype, int prot, unsigned char *context);
 int do_server(int *accept_sock, const char *host, const char *port,
               int family, int type, int protocol, do_server_cb cb,
               unsigned char *context, int naccept, BIO *bio_s_out);
-#ifdef HEADER_X509_H
+
 int verify_callback(int ok, X509_STORE_CTX *ctx);
-#endif
-#ifdef HEADER_SSL_H
+
 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file);
 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
                        STACK_OF(X509) *chain, int build_chain);
 int ssl_print_sigalgs(BIO *out, SSL *s);
 int ssl_print_point_formats(BIO *out, SSL *s);
 int ssl_print_groups(BIO *out, SSL *s, int noshared);
-#endif
 int ssl_print_tmp_key(BIO *out, SSL *s);
 int init_client(int *sock, const char *host, const char *port,
                 const char *bindhost, const char *bindport,
@@ -44,13 +36,11 @@ int should_retry(int i);
 long bio_dump_callback(BIO *bio, int cmd, const char *argp,
                        int argi, long argl, long ret);
 
-#ifdef HEADER_SSL_H
 void apps_ssl_info_callback(const SSL *s, int where, int ret);
 void msg_cb(int write_p, int version, int content_type, const void *buf,
             size_t len, SSL *ssl, void *arg);
 void tlsext_cb(SSL *s, int client_server, int type, const unsigned char *data,
                int len, void *arg);
-#endif
 
 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
                              unsigned int *cookie_len);
@@ -75,7 +65,6 @@ int args_excert(int option, SSL_EXCERT **pexc);
 int load_excert(SSL_EXCERT **pexc);
 void print_verify_detail(SSL *s, BIO *bio);
 void print_ssl_summary(SSL *s);
-#ifdef HEADER_SSL_H
 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str, SSL_CTX *ctx);
 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls,
                      int crl_download);
@@ -86,4 +75,3 @@ int ssl_load_stores(SSL_CTX *ctx, const char *vfyCApath,
 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose);
 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file);
 void print_ca_names(BIO *bio, SSL *s);
-#endif

apps/openssl.c

@@ -23,7 +23,6 @@
 # include <openssl/engine.h>
 #endif
 #include <openssl/err.h>
-#include "s_apps.h"
 /* Needed to get the other O_xxx flags. */
 #ifdef OPENSSL_SYS_VMS
 # include <unixio.h>