Deprecate the low level SEED functions
[oweals/openssl.git] / apps / openssl.c
index cbb77b0c0a8404c9ea2e034441bdca5a2387f90b..00ad9ca0bdcddbb44122a68d94071dbfc1624943 100644 (file)
-/* apps/openssl.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2019 The OpenSSL Project Authors. 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.]
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
 
+#include <internal/cryptlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
-#define OPENSSL_C /* tells apps.h to use complete apps_startup() */
 #include <openssl/bio.h>
 #include <openssl/crypto.h>
+#include <openssl/trace.h>
 #include <openssl/lhash.h>
 #include <openssl/conf.h>
 #include <openssl/x509.h>
 #include <openssl/pem.h>
 #include <openssl/ssl.h>
-#define USE_SOCKETS /* needed for the _O_BINARY defs in the MS world */
+#ifndef OPENSSL_NO_ENGINE
+# include <openssl/engine.h>
+#endif
+#include <openssl/err.h>
+/* Needed to get the other O_xxx flags. */
+#ifdef OPENSSL_SYS_VMS
+# include <unixio.h>
+#endif
 #include "apps.h"
 #include "progs.h"
-#include "s_apps.h"
-#include <openssl/err.h>
 
-static unsigned long MS_CALLBACK hash(FUNCTION *a);
-static int MS_CALLBACK cmp(FUNCTION *a,FUNCTION *b);
-static LHASH *prog_init(void );
-static int do_cmd(LHASH *prog,int argc,char *argv[]);
-LHASH *config=NULL;
-char *default_config_file=NULL;
+/* Special sentinel to exit the program. */
+#define EXIT_THE_PROGRAM (-1)
+
+/*
+ * The LHASH callbacks ("hash" & "cmp") have been replaced by functions with
+ * the base prototypes (we cast each variable inside the function to the
+ * required type of "FUNCTION*"). This removes the necessity for
+ * macro-generated wrapper functions.
+ */
+static LHASH_OF(FUNCTION) *prog_init(void);
+static int do_cmd(LHASH_OF(FUNCTION) *prog, int argc, char *argv[]);
+char *default_config_file = NULL;
+
+BIO *bio_in = NULL;
+BIO *bio_out = NULL;
+BIO *bio_err = NULL;
+
+static int apps_startup(void)
+{
+#ifdef SIGPIPE
+    signal(SIGPIPE, SIG_IGN);
+#endif
+
+    /* Set non-default library initialisation settings */
+    if (!OPENSSL_init_ssl(OPENSSL_INIT_ENGINE_ALL_BUILTIN
+                          | OPENSSL_INIT_LOAD_CONFIG, NULL))
+        return 0;
+
+    setup_ui_method();
+
+    return 1;
+}
 
-/* Make sure there is only one when MONOLITH is defined */
-#ifdef MONOLITH
-BIO *bio_err=NULL;
+static void apps_shutdown(void)
+{
+    destroy_ui_method();
+}
+
+static char *make_config_name(void)
+{
+    const char *t;
+    size_t len;
+    char *p;
+
+    if ((t = getenv("OPENSSL_CONF")) != NULL)
+        return OPENSSL_strdup(t);
+
+    t = X509_get_default_cert_area();
+    len = strlen(t) + 1 + strlen(OPENSSL_CONF) + 1;
+    p = app_malloc(len, "config filename buffer");
+    strcpy(p, t);
+#ifndef OPENSSL_SYS_VMS
+    strcat(p, "/");
 #endif
+    strcat(p, OPENSSL_CONF);
+
+    return p;
+}
+
+
+#ifndef OPENSSL_NO_TRACE
+typedef struct tracedata_st {
+    BIO *bio;
+    unsigned int ingroup:1;
+} tracedata;
+
+static size_t internal_trace_cb(const char *buf, size_t cnt,
+                                int category, int cmd, void *vdata)
+{
+    int ret = 0;
+    tracedata *trace_data = vdata;
+    char buffer[256], *hex;
+    CRYPTO_THREAD_ID tid;
+
+    switch (cmd) {
+    case OSSL_TRACE_CTRL_BEGIN:
+        if (!ossl_assert(!trace_data->ingroup))
+            return 0;
+        trace_data->ingroup = 1;
+
+        tid = CRYPTO_THREAD_get_current_id();
+        hex = OPENSSL_buf2hexstr((const unsigned char *)&tid, sizeof(tid));
+        BIO_snprintf(buffer, sizeof(buffer), "TRACE[%s]:%s: ",
+                     hex == NULL ? "<null>" : hex,
+                     OSSL_trace_get_category_name(category));
+        OPENSSL_free(hex);
+        BIO_set_prefix(trace_data->bio, buffer);
+        break;
+    case OSSL_TRACE_CTRL_WRITE:
+        if (!ossl_assert(trace_data->ingroup))
+            return 0;
+
+        ret = BIO_write(trace_data->bio, buf, cnt);
+        break;
+    case OSSL_TRACE_CTRL_END:
+        if (!ossl_assert(trace_data->ingroup))
+            return 0;
+        trace_data->ingroup = 0;
+
+        BIO_set_prefix(trace_data->bio, NULL);
+
+        break;
+    }
+
+    return ret < 0 ? 0 : ret;
+}
+
+DEFINE_STACK_OF(tracedata)
+static STACK_OF(tracedata) *trace_data_stack;
+
+static void tracedata_free(tracedata *data)
+{
+    BIO_free_all(data->bio);
+    OPENSSL_free(data);
+}
+
+static STACK_OF(tracedata) *trace_data_stack;
+
+static void cleanup_trace(void)
+{
+    sk_tracedata_pop_free(trace_data_stack, tracedata_free);
+}
+
+static void setup_trace_category(int category)
+{
+    BIO *channel;
+    tracedata *trace_data;
+
+    if (OSSL_trace_enabled(category))
+        return;
+
+    channel = BIO_push(BIO_new(BIO_f_prefix()), dup_bio_err(FORMAT_TEXT));
+    trace_data = OPENSSL_zalloc(sizeof(*trace_data));
+
+    if (trace_data == NULL
+        || (trace_data->bio = channel) == NULL
+        || OSSL_trace_set_callback(category, internal_trace_cb,
+                                   trace_data) == 0
+        || sk_tracedata_push(trace_data_stack, trace_data) == 0) {
+
+        fprintf(stderr,
+                "warning: unable to setup trace callback for category '%s'.\n",
+                OSSL_trace_get_category_name(category));
+
+        OSSL_trace_set_callback(category, NULL, NULL);
+        BIO_free_all(channel);
+    }
+}
+
+static void setup_trace(const char *str)
+{
+    char *val;
+
+    /*
+     * We add this handler as early as possible to ensure it's executed
+     * as late as possible, i.e. after the TRACE code has done its cleanup
+     * (which happens last in OPENSSL_cleanup).
+     */
+    atexit(cleanup_trace);
+
+    trace_data_stack = sk_tracedata_new_null();
+    val = OPENSSL_strdup(str);
+
+    if (val != NULL) {
+        char *valp = val;
+        char *item;
+
+        for (valp = val; (item = strtok(valp, ",")) != NULL; valp = NULL) {
+            int category = OSSL_trace_get_category_num(item);
+
+            if (category == OSSL_TRACE_CATEGORY_ALL) {
+                while (++category < OSSL_TRACE_CATEGORY_NUM)
+                    setup_trace_category(category);
+                break;
+            } else if (category > 0) {
+                setup_trace_category(category);
+            } else {
+                fprintf(stderr,
+                        "warning: unknown trace category: '%s'.\n", item);
+            }
+        }
+    }
+
+    OPENSSL_free(val);
+}
+#endif /* OPENSSL_NO_TRACE */
+
+int main(int argc, char *argv[])
+{
+    FUNCTION f, *fp;
+    LHASH_OF(FUNCTION) *prog = NULL;
+    char *p, *pname;
+    char buf[1024];
+    const char *prompt;
+    ARGS arg;
+    int first, n, i, ret = 0;
+
+    arg.argv = NULL;
+    arg.size = 0;
 
-int main(int Argc, char *Argv[])
-       {
-       ARGS arg;
-#define PROG_NAME_SIZE 16
-       char pname[PROG_NAME_SIZE];
-       FUNCTION f,*fp;
-       MS_STATIC char *prompt,buf[1024],config_name[256];
-       int n,i,ret=0;
-       int argc;
-       char **argv,*p;
-       LHASH *prog=NULL;
-       long errline;
-       arg.data=NULL;
-       arg.count=0;
-
-       if (getenv("OPENSSL_DEBUG_MEMORY") != NULL)
-               CRYPTO_malloc_debug_init();
-       CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
-
-       apps_startup();
-
-       if (bio_err == NULL)
-               if ((bio_err=BIO_new(BIO_s_file())) != NULL)
-                       BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
-
-       ERR_load_crypto_strings();
-       ENGINE_load_builtin_engines();
-
-       /* Lets load up our environment a little */
-       p=getenv("OPENSSL_CONF");
-       if (p == NULL)
-               p=getenv("SSLEAY_CONF");
-       if (p == NULL)
-               {
-               strcpy(config_name,X509_get_default_cert_area());
-#ifndef VMS
-               strcat(config_name,"/");
+    /* Set up some of the environment. */
+    default_config_file = make_config_name();
+    bio_in = dup_bio_in(FORMAT_TEXT);
+    bio_out = dup_bio_out(FORMAT_TEXT);
+    bio_err = dup_bio_err(FORMAT_TEXT);
+
+#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
+    argv = copy_argv(&argc, argv);
+#elif defined(_WIN32)
+    /*
+     * Replace argv[] with UTF-8 encoded strings.
+     */
+    win32_utf8argv(&argc, &argv);
 #endif
-               strcat(config_name,OPENSSL_CONF);
-               p=config_name;
-               }
-
-       default_config_file=p;
-
-       config=CONF_load(config,p,&errline);
-       if (config == NULL) ERR_clear_error();
-
-       prog=prog_init();
-
-       /* first check the program name */
-       program_name(Argv[0],pname,PROG_NAME_SIZE);
-
-       f.name=pname;
-       fp=(FUNCTION *)lh_retrieve(prog,&f);
-       if (fp != NULL)
-               {
-               Argv[0]=pname;
-               ret=fp->func(Argc,Argv);
-               goto end;
-               }
-
-       /* ok, now check that there are not arguments, if there are,
-        * run with them, shifting the ssleay off the front */
-       if (Argc != 1)
-               {
-               Argc--;
-               Argv++;
-               ret=do_cmd(prog,Argc,Argv);
-               if (ret < 0) ret=0;
-               goto end;
-               }
-
-       /* ok, lets enter the old 'OpenSSL>' mode */
-       
-       for (;;)
-               {
-               ret=0;
-               p=buf;
-               n=1024;
-               i=0;
-               for (;;)
-                       {
-                       p[0]='\0';
-                       if (i++)
-                               prompt=">";
-                       else    prompt="OpenSSL> ";
-                       fputs(prompt,stdout);
-                       fflush(stdout);
-                       fgets(p,n,stdin);
-                       if (p[0] == '\0') goto end;
-                       i=strlen(p);
-                       if (i <= 1) break;
-                       if (p[i-2] != '\\') break;
-                       i-=2;
-                       p+=i;
-                       n-=i;
-                       }
-               if (!chopup_args(&arg,buf,&argc,&argv)) break;
-
-               ret=do_cmd(prog,argc,argv);
-               if (ret < 0)
-                       {
-                       ret=0;
-                       goto end;
-                       }
-               if (ret != 0)
-                       BIO_printf(bio_err,"error in %s\n",argv[0]);
-               (void)BIO_flush(bio_err);
-               }
-       BIO_printf(bio_err,"bad exit\n");
-       ret=1;
-end:
-       if (config != NULL)
-               {
-               CONF_free(config);
-               config=NULL;
-               }
-       if (prog != NULL) lh_free(prog);
-       if (arg.data != NULL) OPENSSL_free(arg.data);
-       ERR_remove_state(0);
-
-       EVP_cleanup();
-       ERR_free_strings();
-       
-       CRYPTO_mem_leaks(bio_err);
-       if (bio_err != NULL)
-               {
-               BIO_free(bio_err);
-               bio_err=NULL;
-               }
-       EXIT(ret);
-       }
-
-#define LIST_STANDARD_COMMANDS "list-standard-commands"
-#define LIST_MESSAGE_DIGEST_COMMANDS "list-message-digest-commands"
-#define LIST_CIPHER_COMMANDS "list-cipher-commands"
-
-static int do_cmd(LHASH *prog, int argc, char *argv[])
-       {
-       FUNCTION f,*fp;
-       int i,ret=1,tp,nl;
-
-       if ((argc <= 0) || (argv[0] == NULL))
-               { ret=0; goto end; }
-       f.name=argv[0];
-       fp=(FUNCTION *)lh_retrieve(prog,&f);
-       if (fp != NULL)
-               {
-               ret=fp->func(argc,argv);
-               }
-       else if ((strncmp(argv[0],"no-",3)) == 0)
-               {
-               BIO *bio_stdout = BIO_new_fp(stdout,BIO_NOCLOSE);
-#ifdef VMS
-               {
-               BIO *tmpbio = BIO_new(BIO_f_linebuffer());
-               bio_stdout = BIO_push(tmpbio, bio_stdout);
-               }
+
+#ifndef OPENSSL_NO_TRACE
+    setup_trace(getenv("OPENSSL_TRACE"));
 #endif
-               f.name=argv[0]+3;
-               ret = (lh_retrieve(prog,&f) != NULL);
-               if (!ret)
-                       BIO_printf(bio_stdout, "%s\n", argv[0]);
-               else
-                       BIO_printf(bio_stdout, "%s\n", argv[0]+3);
-               BIO_free_all(bio_stdout);
-               goto end;
-               }
-       else if ((strcmp(argv[0],"quit") == 0) ||
-               (strcmp(argv[0],"q") == 0) ||
-               (strcmp(argv[0],"exit") == 0) ||
-               (strcmp(argv[0],"bye") == 0))
-               {
-               ret= -1;
-               goto end;
-               }
-       else if ((strcmp(argv[0],LIST_STANDARD_COMMANDS) == 0) ||
-               (strcmp(argv[0],LIST_MESSAGE_DIGEST_COMMANDS) == 0) ||
-               (strcmp(argv[0],LIST_CIPHER_COMMANDS) == 0))
-               {
-               int list_type;
-               BIO *bio_stdout;
-
-               if (strcmp(argv[0],LIST_STANDARD_COMMANDS) == 0)
-                       list_type = FUNC_TYPE_GENERAL;
-               else if (strcmp(argv[0],LIST_MESSAGE_DIGEST_COMMANDS) == 0)
-                       list_type = FUNC_TYPE_MD;
-               else /* strcmp(argv[0],LIST_CIPHER_COMMANDS) == 0 */
-                       list_type = FUNC_TYPE_CIPHER;
-               bio_stdout = BIO_new_fp(stdout,BIO_NOCLOSE);
-#ifdef VMS
-               {
-               BIO *tmpbio = BIO_new(BIO_f_linebuffer());
-               bio_stdout = BIO_push(tmpbio, bio_stdout);
-               }
+
+    if (getenv("OPENSSL_FIPS")) {
+        BIO_printf(bio_err, "FIPS mode not supported.\n");
+        return 1;
+    }
+
+    if (!apps_startup()) {
+        BIO_printf(bio_err,
+                   "FATAL: Startup failure (dev note: apps_startup() failed)\n");
+        ERR_print_errors(bio_err);
+        ret = 1;
+        goto end;
+    }
+
+    prog = prog_init();
+    if (prog == NULL) {
+        BIO_printf(bio_err,
+                   "FATAL: Startup failure (dev note: prog_init() failed)\n");
+        ERR_print_errors(bio_err);
+        ret = 1;
+        goto end;
+    }
+    pname = opt_progname(argv[0]);
+
+    /* first check the program name */
+    f.name = pname;
+    fp = lh_FUNCTION_retrieve(prog, &f);
+    if (fp != NULL) {
+        argv[0] = pname;
+        ret = fp->func(argc, argv);
+        goto end;
+    }
+
+    /* If there is stuff on the command line, run with that. */
+    if (argc != 1) {
+        argc--;
+        argv++;
+        ret = do_cmd(prog, argc, argv);
+        if (ret < 0)
+            ret = 0;
+        goto end;
+    }
+
+    /* ok, lets enter interactive mode */
+    for (;;) {
+        ret = 0;
+        /* Read a line, continue reading if line ends with \ */
+        for (p = buf, n = sizeof(buf), i = 0, first = 1; n > 0; first = 0) {
+            prompt = first ? "OpenSSL> " : "> ";
+            p[0] = '\0';
+#ifndef READLINE
+            fputs(prompt, stdout);
+            fflush(stdout);
+            if (!fgets(p, n, stdin))
+                goto end;
+            if (p[0] == '\0')
+                goto end;
+            i = strlen(p);
+            if (i <= 1)
+                break;
+            if (p[i - 2] != '\\')
+                break;
+            i -= 2;
+            p += i;
+            n -= i;
+#else
+            {
+                extern char *readline(const char *);
+                extern void add_history(const char *cp);
+                char *text;
+
+                text = readline(prompt);
+                if (text == NULL)
+                    goto end;
+                i = strlen(text);
+                if (i == 0 || i > n)
+                    break;
+                if (text[i - 1] != '\\') {
+                    p += strlen(strcpy(p, text));
+                    free(text);
+                    add_history(buf);
+                    break;
+                }
+
+                text[i - 1] = '\0';
+                p += strlen(strcpy(p, text));
+                free(text);
+                n -= i;
+            }
 #endif
-               
-               for (fp=functions; fp->name != NULL; fp++)
-                       if (fp->type == list_type)
-                               BIO_printf(bio_stdout, "%s\n", fp->name);
-               BIO_free_all(bio_stdout);
-               ret=0;
-               goto end;
-               }
-       else
-               {
-               BIO_printf(bio_err,"openssl:Error: '%s' is an invalid command.\n",
-                       argv[0]);
-               BIO_printf(bio_err, "\nStandard commands");
-               i=0;
-               tp=0;
-               for (fp=functions; fp->name != NULL; fp++)
-                       {
-                       nl=0;
-                       if (((i++) % 5) == 0)
-                               {
-                               BIO_printf(bio_err,"\n");
-                               nl=1;
-                               }
-                       if (fp->type != tp)
-                               {
-                               tp=fp->type;
-                               if (!nl) BIO_printf(bio_err,"\n");
-                               if (tp == FUNC_TYPE_MD)
-                                       {
-                                       i=1;
-                                       BIO_printf(bio_err,
-                                               "\nMessage Digest commands (see the `dgst' command for more details)\n");
-                                       }
-                               else if (tp == FUNC_TYPE_CIPHER)
-                                       {
-                                       i=1;
-                                       BIO_printf(bio_err,"\nCipher commands (see the `enc' command for more details)\n");
-                                       }
-                               }
-                       BIO_printf(bio_err,"%-15s",fp->name);
-                       }
-               BIO_printf(bio_err,"\n\n");
-               ret=0;
-               }
-end:
-       return(ret);
-       }
-
-static int SortFnByName(const void *_f1,const void *_f2)
-    {
-    const FUNCTION *f1=_f1;
-    const FUNCTION *f2=_f2;
-
-    if(f1->type != f2->type)
-       return f1->type-f2->type;
-    return strcmp(f1->name,f2->name);
+        }
+
+        if (!chopup_args(&arg, buf)) {
+            BIO_printf(bio_err, "Can't parse (no memory?)\n");
+            break;
+        }
+
+        ret = do_cmd(prog, arg.argc, arg.argv);
+        if (ret == EXIT_THE_PROGRAM) {
+            ret = 0;
+            goto end;
+        }
+        if (ret != 0)
+            BIO_printf(bio_err, "error in %s\n", arg.argv[0]);
+        (void)BIO_flush(bio_out);
+        (void)BIO_flush(bio_err);
     }
+    ret = 1;
+ end:
+    OPENSSL_free(default_config_file);
+    lh_FUNCTION_free(prog);
+    OPENSSL_free(arg.argv);
+    app_RAND_write();
+
+    BIO_free(bio_in);
+    BIO_free_all(bio_out);
+    apps_shutdown();
+    BIO_free(bio_err);
+    EXIT(ret);
+}
+
+typedef enum HELP_CHOICE {
+    OPT_hERR = -1, OPT_hEOF = 0, OPT_hHELP
+} HELP_CHOICE;
+
+const OPTIONS help_options[] = {
+    {OPT_HELP_STR, 1, '-', "Usage: help [options] [command]\n"},
+
+    OPT_SECTION("General"),
+    {"help", OPT_hHELP, '-', "Display this summary"},
+
+    OPT_PARAMETERS(),
+    {"command", 0, 0, "Name of command to display help (optional)"},
+    {NULL}
+};
+
+
+int help_main(int argc, char **argv)
+{
+    FUNCTION *fp;
+    int i, nl;
+    FUNC_TYPE tp;
+    char *prog;
+    HELP_CHOICE o;
+    DISPLAY_COLUMNS dc;
+
+    prog = opt_init(argc, argv, help_options);
+    while ((o = opt_next()) != OPT_hEOF) {
+        switch (o) {
+        case OPT_hERR:
+        case OPT_hEOF:
+            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
+            return 1;
+        case OPT_hHELP:
+            opt_help(help_options);
+            return 0;
+        }
+    }
+
+    if (opt_num_rest() == 1) {
+        char *new_argv[3];
+
+        new_argv[0] = opt_rest()[0];
+        new_argv[1] = "--help";
+        new_argv[2] = NULL;
+        return do_cmd(prog_init(), 2, new_argv);
+    }
+    if (opt_num_rest() != 0) {
+        BIO_printf(bio_err, "Usage: %s\n", prog);
+        return 1;
+    }
+
+    calculate_columns(functions, &dc);
+    BIO_printf(bio_err, "Standard commands");
+    i = 0;
+    tp = FT_none;
+    for (fp = functions; fp->name != NULL; fp++) {
+        nl = 0;
+        if (i++ % dc.columns == 0) {
+            BIO_printf(bio_err, "\n");
+            nl = 1;
+        }
+        if (fp->type != tp) {
+            tp = fp->type;
+            if (!nl)
+                BIO_printf(bio_err, "\n");
+            if (tp == FT_md) {
+                i = 1;
+                BIO_printf(bio_err,
+                           "\nMessage Digest commands (see the `dgst' command for more details)\n");
+            } else if (tp == FT_cipher) {
+                i = 1;
+                BIO_printf(bio_err,
+                           "\nCipher commands (see the `enc' command for more details)\n");
+            }
+        }
+        BIO_printf(bio_err, "%-*s", dc.width, fp->name);
+    }
+    BIO_printf(bio_err, "\n\n");
+    return 0;
+}
+
+static int do_cmd(LHASH_OF(FUNCTION) *prog, int argc, char *argv[])
+{
+    FUNCTION f, *fp;
+
+    if (argc <= 0 || argv[0] == NULL)
+        return 0;
+    f.name = argv[0];
+    fp = lh_FUNCTION_retrieve(prog, &f);
+    if (fp == NULL) {
+        if (EVP_get_digestbyname(argv[0])) {
+            f.type = FT_md;
+            f.func = dgst_main;
+            fp = &f;
+        } else if (EVP_get_cipherbyname(argv[0])) {
+            f.type = FT_cipher;
+            f.func = enc_main;
+            fp = &f;
+        }
+    }
+    if (fp != NULL) {
+        return fp->func(argc, argv);
+    }
+    if ((strncmp(argv[0], "no-", 3)) == 0) {
+        /*
+         * User is asking if foo is unsupported, by trying to "run" the
+         * no-foo command.  Strange.
+         */
+        f.name = argv[0] + 3;
+        if (lh_FUNCTION_retrieve(prog, &f) == NULL) {
+            BIO_printf(bio_out, "%s\n", argv[0]);
+            return 0;
+        }
+        BIO_printf(bio_out, "%s\n", argv[0] + 3);
+        return 1;
+    }
+    if (strcmp(argv[0], "quit") == 0 || strcmp(argv[0], "q") == 0 ||
+        strcmp(argv[0], "exit") == 0 || strcmp(argv[0], "bye") == 0)
+        /* Special value to mean "exit the program. */
+        return EXIT_THE_PROGRAM;
+
+    BIO_printf(bio_err, "Invalid command '%s'; type \"help\" for a list.\n",
+               argv[0]);
+    return 1;
+}
+
+static int function_cmp(const FUNCTION * a, const FUNCTION * b)
+{
+    return strncmp(a->name, b->name, 8);
+}
+
+static unsigned long function_hash(const FUNCTION * a)
+{
+    return OPENSSL_LH_strhash(a->name);
+}
+
+static int SortFnByName(const void *_f1, const void *_f2)
+{
+    const FUNCTION *f1 = _f1;
+    const FUNCTION *f2 = _f2;
+
+    if (f1->type != f2->type)
+        return f1->type - f2->type;
+    return strcmp(f1->name, f2->name);
+}
+
+static LHASH_OF(FUNCTION) *prog_init(void)
+{
+    static LHASH_OF(FUNCTION) *ret = NULL;
+    static int prog_inited = 0;
+    FUNCTION *f;
+    size_t i;
+
+    if (prog_inited)
+        return ret;
+
+    prog_inited = 1;
+
+    /* Sort alphabetically within category. For nicer help displays. */
+    for (i = 0, f = functions; f->name != NULL; ++f, ++i)
+        ;
+    qsort(functions, i, sizeof(*functions), SortFnByName);
+
+    if ((ret = lh_FUNCTION_new(function_hash, function_cmp)) == NULL)
+        return NULL;
 
-static LHASH *prog_init(void)
-       {
-       LHASH *ret;
-       FUNCTION *f;
-       int i;
-
-       /* Purely so it looks nice when the user hits ? */
-       for(i=0,f=functions ; f->name != NULL ; ++f,++i)
-           ;
-       qsort(functions,i,sizeof *functions,SortFnByName);
-
-       if ((ret=lh_new(hash,cmp)) == NULL) return(NULL);
-
-       for (f=functions; f->name != NULL; f++)
-               lh_insert(ret,f);
-       return(ret);
-       }
-
-static int MS_CALLBACK cmp(FUNCTION *a, FUNCTION *b)
-       {
-       return(strncmp(a->name,b->name,8));
-       }
-
-static unsigned long MS_CALLBACK hash(FUNCTION *a)
-       {
-       return(lh_strhash(a->name));
-       }
+    for (f = functions; f->name != NULL; f++)
+        (void)lh_FUNCTION_insert(ret, f);
+    return ret;
+}