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openssl/apps/openssl.c

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/*
* Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (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>
#include <openssl/bio.h>
#include <openssl/crypto.h>
#include <openssl/lhash.h>
#include <openssl/conf.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
#ifndef OPENSSL_NO_ENGINE
# 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>
#endif
#define INCLUDE_FUNCTION_TABLE
#include "apps.h"
/* Structure to hold the number of columns to be displayed and the
* field width used to display them.
*/
typedef struct {
int columns;
int width;
} DISPLAY_COLUMNS;
/* 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* The LHASH callbacks ("hash" & "cmp") have been replaced by functions with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[]);
static void list_pkey(void);
static void list_pkey_meth(void);
static void list_type(FUNC_TYPE ft, int one);
static void list_disabled(void);
char *default_config_file = NULL;
BIO *bio_in = NULL;
BIO *bio_out = NULL;
BIO *bio_err = NULL;
static void calculate_columns(DISPLAY_COLUMNS *dc)
{
FUNCTION *f;
int len, maxlen = 0;
for (f = functions; f->name != NULL; ++f)
if (f->type == FT_general || f->type == FT_md || f->type == FT_cipher)
if ((len = strlen(f->name)) > maxlen)
maxlen = len;
dc->width = maxlen + 2;
dc->columns = (80 - 1) / dc->width;
}
static int apps_startup()
{
#ifdef SIGPIPE
signal(SIGPIPE, SIG_IGN);
#endif
/* Set non-default library initialisation settings */
if (!OPENSSL_init_crypto(OPENSSL_INIT_ENGINE_ALL_BUILTIN
| OPENSSL_INIT_LOAD_CONFIG, NULL))
return 0;
setup_ui_method();
return 1;
}
static void apps_shutdown()
{
destroy_ui_method();
}
static char *make_config_name()
{
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;
}
int main(int argc, char *argv[])
{
FUNCTION f, *fp;
LHASH_OF(FUNCTION) *prog = NULL;
char **copied_argv = NULL;
char *p, *pname;
char buf[1024];
const char *prompt;
ARGS arg;
int first, n, i, ret = 0;
arg.argv = NULL;
arg.size = 0;
/* 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)
copied_argv = argv = copy_argv(&argc, argv);
#elif defined(_WIN32)
/*
* Replace argv[] with UTF-8 encoded strings.
*/
win32_utf8argv(&argc, &argv);
#endif
p = getenv("OPENSSL_DEBUG_MEMORY");
if (p != NULL && strcmp(p, "on") == 0)
CRYPTO_set_mem_debug(1);
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
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();
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
}
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(copied_argv);
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();
#ifndef OPENSSL_NO_CRYPTO_MDEBUG
if (CRYPTO_mem_leaks(bio_err) <= 0)
ret = 1;
#endif
BIO_free(bio_err);
EXIT(ret);
}
static void list_cipher_fn(const EVP_CIPHER *c,
const char *from, const char *to, void *arg)
{
if (c != NULL) {
BIO_printf(arg, "%s\n", EVP_CIPHER_name(c));
} else {
if (from == NULL)
from = "<undefined>";
if (to == NULL)
to = "<undefined>";
BIO_printf(arg, "%s => %s\n", from, to);
}
}
static void list_md_fn(const EVP_MD *m,
const char *from, const char *to, void *arg)
{
if (m != NULL) {
BIO_printf(arg, "%s\n", EVP_MD_name(m));
} else {
if (from == NULL)
from = "<undefined>";
if (to == NULL)
to = "<undefined>";
BIO_printf((BIO *)arg, "%s => %s\n", from, to);
}
}
static void list_missing_help(void)
{
const FUNCTION *fp;
const OPTIONS *o;
for (fp = functions; fp->name != NULL; fp++) {
if ((o = fp->help) != NULL) {
/* If there is help, list what flags are not documented. */
for ( ; o->name != NULL; o++) {
if (o->helpstr == NULL)
BIO_printf(bio_out, "%s %s\n", fp->name, o->name);
}
} else if (fp->func != dgst_main) {
/* If not aliased to the dgst command, */
BIO_printf(bio_out, "%s *\n", fp->name);
}
}
}
static void list_options_for_command(const char *command)
{
const FUNCTION *fp;
const OPTIONS *o;
for (fp = functions; fp->name != NULL; fp++)
if (strcmp(fp->name, command) == 0)
break;
if (fp->name == NULL) {
BIO_printf(bio_err, "Invalid command '%s'; type \"help\" for a list.\n",
command);
return;
}
if ((o = fp->help) == NULL)
return;
for ( ; o->name != NULL; o++) {
if (o->name == OPT_HELP_STR
|| o->name == OPT_MORE_STR
|| o->name[0] == '\0')
continue;
BIO_printf(bio_out, "%s %c\n", o->name, o->valtype);
}
}
/* Unified enum for help and list commands. */
typedef enum HELPLIST_CHOICE {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_ONE,
OPT_COMMANDS, OPT_DIGEST_COMMANDS, OPT_OPTIONS,
OPT_DIGEST_ALGORITHMS, OPT_CIPHER_COMMANDS, OPT_CIPHER_ALGORITHMS,
OPT_PK_ALGORITHMS, OPT_PK_METHOD, OPT_DISABLED, OPT_MISSING_HELP
} HELPLIST_CHOICE;
const OPTIONS list_options[] = {
{"help", OPT_HELP, '-', "Display this summary"},
{"1", OPT_ONE, '-', "List in one column"},
{"commands", OPT_COMMANDS, '-', "List of standard commands"},
{"digest-commands", OPT_DIGEST_COMMANDS, '-',
"List of message digest commands"},
{"digest-algorithms", OPT_DIGEST_ALGORITHMS, '-',
"List of message digest algorithms"},
{"cipher-commands", OPT_CIPHER_COMMANDS, '-', "List of cipher commands"},
{"cipher-algorithms", OPT_CIPHER_ALGORITHMS, '-',
"List of cipher algorithms"},
{"public-key-algorithms", OPT_PK_ALGORITHMS, '-',
"List of public key algorithms"},
{"public-key-methods", OPT_PK_METHOD, '-',
"List of public key methods"},
{"disabled", OPT_DISABLED, '-',
"List of disabled features"},
{"missing-help", OPT_MISSING_HELP, '-',
"List missing detailed help strings"},
{"options", OPT_OPTIONS, 's',
"List options for specified command"},
{NULL}
};
int list_main(int argc, char **argv)
{
char *prog;
HELPLIST_CHOICE o;
int one = 0, done = 0;
prog = opt_init(argc, argv, list_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF: /* Never hit, but suppresses warning */
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
return 1;
case OPT_HELP:
opt_help(list_options);
break;
case OPT_ONE:
one = 1;
break;
case OPT_COMMANDS:
list_type(FT_general, one);
break;
case OPT_DIGEST_COMMANDS:
list_type(FT_md, one);
break;
case OPT_DIGEST_ALGORITHMS:
EVP_MD_do_all_sorted(list_md_fn, bio_out);
break;
case OPT_CIPHER_COMMANDS:
list_type(FT_cipher, one);
break;
case OPT_CIPHER_ALGORITHMS:
EVP_CIPHER_do_all_sorted(list_cipher_fn, bio_out);
break;
case OPT_PK_ALGORITHMS:
list_pkey();
break;
case OPT_PK_METHOD:
list_pkey_meth();
break;
case OPT_DISABLED:
list_disabled();
break;
case OPT_MISSING_HELP:
list_missing_help();
break;
case OPT_OPTIONS:
list_options_for_command(opt_arg());
break;
}
done = 1;
}
if (opt_num_rest() != 0) {
BIO_printf(bio_err, "Extra arguments given.\n");
goto opthelp;
}
if (!done)
goto opthelp;
return 0;
}
typedef enum HELP_CHOICE {
OPT_hERR = -1, OPT_hEOF = 0, OPT_hHELP
} HELP_CHOICE;
const OPTIONS help_options[] = {
{"help", OPT_hHELP, '-', "Display this summary"},
{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() != 0) {
BIO_printf(bio_err, "Usage: %s\n", prog);
return 1;
}
calculate_columns(&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 void list_type(FUNC_TYPE ft, int one)
{
FUNCTION *fp;
int i = 0;
DISPLAY_COLUMNS dc;
if (!one)
calculate_columns(&dc);
for (fp = functions; fp->name != NULL; fp++) {
if (fp->type != ft)
continue;
if (one) {
BIO_printf(bio_out, "%s\n", fp->name);
} else {
if (i % dc.columns == 0 && i > 0)
BIO_printf(bio_out, "\n");
BIO_printf(bio_out, "%-*s", dc.width, fp->name);
i++;
}
}
if (!one)
BIO_printf(bio_out, "\n\n");
}
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 void list_pkey(void)
{
int i;
for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
const EVP_PKEY_ASN1_METHOD *ameth;
int pkey_id, pkey_base_id, pkey_flags;
const char *pinfo, *pem_str;
ameth = EVP_PKEY_asn1_get0(i);
EVP_PKEY_asn1_get0_info(&pkey_id, &pkey_base_id, &pkey_flags,
&pinfo, &pem_str, ameth);
if (pkey_flags & ASN1_PKEY_ALIAS) {
BIO_printf(bio_out, "Name: %s\n", OBJ_nid2ln(pkey_id));
BIO_printf(bio_out, "\tAlias for: %s\n",
OBJ_nid2ln(pkey_base_id));
} else {
BIO_printf(bio_out, "Name: %s\n", pinfo);
BIO_printf(bio_out, "\tType: %s Algorithm\n",
pkey_flags & ASN1_PKEY_DYNAMIC ?
"External" : "Builtin");
BIO_printf(bio_out, "\tOID: %s\n", OBJ_nid2ln(pkey_id));
if (pem_str == NULL)
pem_str = "(none)";
BIO_printf(bio_out, "\tPEM string: %s\n", pem_str);
}
}
}
static void list_pkey_meth(void)
{
size_t i;
size_t meth_count = EVP_PKEY_meth_get_count();
for (i = 0; i < meth_count; i++) {
const EVP_PKEY_METHOD *pmeth = EVP_PKEY_meth_get0(i);
int pkey_id, pkey_flags;
EVP_PKEY_meth_get0_info(&pkey_id, &pkey_flags, pmeth);
BIO_printf(bio_out, "%s\n", OBJ_nid2ln(pkey_id));
BIO_printf(bio_out, "\tType: %s Algorithm\n",
pkey_flags & ASN1_PKEY_DYNAMIC ? "External" : "Builtin");
}
}
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 void list_disabled(void)
{
BIO_puts(bio_out, "Disabled algorithms:\n");
#ifdef OPENSSL_NO_ARIA
BIO_puts(bio_out, "ARIA\n");
#endif
#ifdef OPENSSL_NO_BF
BIO_puts(bio_out, "BF\n");
#endif
#ifdef OPENSSL_NO_BLAKE2
BIO_puts(bio_out, "BLAKE2\n");
#endif
#ifdef OPENSSL_NO_CAMELLIA
BIO_puts(bio_out, "CAMELLIA\n");
#endif
#ifdef OPENSSL_NO_CAST
BIO_puts(bio_out, "CAST\n");
#endif
#ifdef OPENSSL_NO_CMAC
BIO_puts(bio_out, "CMAC\n");
#endif
#ifdef OPENSSL_NO_CMS
BIO_puts(bio_out, "CMS\n");
#endif
#ifdef OPENSSL_NO_COMP
BIO_puts(bio_out, "COMP\n");
#endif
#ifdef OPENSSL_NO_DES
BIO_puts(bio_out, "DES\n");
#endif
#ifdef OPENSSL_NO_DGRAM
BIO_puts(bio_out, "DGRAM\n");
#endif
#ifdef OPENSSL_NO_DH
BIO_puts(bio_out, "DH\n");
#endif
#ifdef OPENSSL_NO_DSA
BIO_puts(bio_out, "DSA\n");
#endif
#if defined(OPENSSL_NO_DTLS)
BIO_puts(bio_out, "DTLS\n");
#endif
#if defined(OPENSSL_NO_DTLS1)
BIO_puts(bio_out, "DTLS1\n");
#endif
#if defined(OPENSSL_NO_DTLS1_2)
BIO_puts(bio_out, "DTLS1_2\n");
#endif
#ifdef OPENSSL_NO_EC
BIO_puts(bio_out, "EC\n");
#endif
#ifdef OPENSSL_NO_EC2M
BIO_puts(bio_out, "EC2M\n");
#endif
#ifdef OPENSSL_NO_ENGINE
BIO_puts(bio_out, "ENGINE\n");
#endif
#ifdef OPENSSL_NO_GOST
BIO_puts(bio_out, "GOST\n");
#endif
#ifdef OPENSSL_NO_HEARTBEATS
BIO_puts(bio_out, "HEARTBEATS\n");
#endif
#ifdef OPENSSL_NO_IDEA
BIO_puts(bio_out, "IDEA\n");
#endif
#ifdef OPENSSL_NO_MD2
BIO_puts(bio_out, "MD2\n");
#endif
#ifdef OPENSSL_NO_MD4
BIO_puts(bio_out, "MD4\n");
#endif
#ifdef OPENSSL_NO_MD5
BIO_puts(bio_out, "MD5\n");
#endif
#ifdef OPENSSL_NO_MDC2
BIO_puts(bio_out, "MDC2\n");
#endif
#ifdef OPENSSL_NO_OCB
BIO_puts(bio_out, "OCB\n");
#endif
#ifdef OPENSSL_NO_OCSP
BIO_puts(bio_out, "OCSP\n");
#endif
#ifdef OPENSSL_NO_PSK
BIO_puts(bio_out, "PSK\n");
#endif
#ifdef OPENSSL_NO_RC2
BIO_puts(bio_out, "RC2\n");
#endif
#ifdef OPENSSL_NO_RC4
BIO_puts(bio_out, "RC4\n");
#endif
#ifdef OPENSSL_NO_RC5
BIO_puts(bio_out, "RC5\n");
#endif
#ifdef OPENSSL_NO_RMD160
BIO_puts(bio_out, "RMD160\n");
#endif
#ifdef OPENSSL_NO_RSA
BIO_puts(bio_out, "RSA\n");
#endif
#ifdef OPENSSL_NO_SCRYPT
BIO_puts(bio_out, "SCRYPT\n");
#endif
#ifdef OPENSSL_NO_SCTP
BIO_puts(bio_out, "SCTP\n");
#endif
#ifdef OPENSSL_NO_SEED
BIO_puts(bio_out, "SEED\n");
#endif
#ifdef OPENSSL_NO_SOCK
BIO_puts(bio_out, "SOCK\n");
#endif
#ifdef OPENSSL_NO_SRP
BIO_puts(bio_out, "SRP\n");
#endif
#ifdef OPENSSL_NO_SRTP
BIO_puts(bio_out, "SRTP\n");
#endif
#ifdef OPENSSL_NO_SSL3
BIO_puts(bio_out, "SSL3\n");
#endif
#ifdef OPENSSL_NO_TLS1
BIO_puts(bio_out, "TLS1\n");
#endif
#ifdef OPENSSL_NO_TLS1_1
BIO_puts(bio_out, "TLS1_1\n");
#endif
#ifdef OPENSSL_NO_TLS1_2
BIO_puts(bio_out, "TLS1_2\n");
#endif
#ifdef OPENSSL_NO_WHIRLPOOL
BIO_puts(bio_out, "WHIRLPOOL\n");
#endif
#ifndef ZLIB
BIO_puts(bio_out, "ZLIB\n");
#endif
}
static LHASH_OF(FUNCTION) *prog_init(void)
{
LHASH_OF(FUNCTION) *ret;
FUNCTION *f;
size_t i;
/* 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);
for (f = functions; f->name != NULL; f++)
(void)lh_FUNCTION_insert(ret, f);
return ret;
}
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