2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
13 #include <openssl/bio.h>
14 #include <openssl/crypto.h>
15 #include <openssl/trace.h>
16 #include <openssl/lhash.h>
17 #include <openssl/conf.h>
18 #include <openssl/x509.h>
19 #include <openssl/pem.h>
20 #include <openssl/ssl.h>
21 #ifndef OPENSSL_NO_ENGINE
22 # include <openssl/engine.h>
24 #include <openssl/err.h>
25 /* Needed to get the other O_xxx flags. */
26 #ifdef OPENSSL_SYS_VMS
33 * The LHASH callbacks ("hash" & "cmp") have been replaced by functions with
34 * the base prototypes (we cast each variable inside the function to the
35 * required type of "FUNCTION*"). This removes the necessity for
36 * macro-generated wrapper functions.
38 static LHASH_OF(FUNCTION
) *prog_init(void);
39 static int do_cmd(LHASH_OF(FUNCTION
) *prog
, int argc
, char *argv
[]);
40 char *default_config_file
= NULL
;
46 static void warn_deprecated(const FUNCTION
*fp
)
48 if (fp
->deprecated_version
!= NULL
)
49 BIO_printf(bio_err
, "The command %s was deprecated in version %s.",
50 fp
->name
, fp
->deprecated_version
);
52 BIO_printf(bio_err
, "The command %s is deprecated.", fp
->name
);
53 if (strcmp(fp
->deprecated_alternative
, DEPRECATED_NO_ALTERNATIVE
) != 0)
54 BIO_printf(bio_err
, " Use '%s' instead.", fp
->deprecated_alternative
);
55 BIO_printf(bio_err
, "\n");
58 static int apps_startup(void)
60 const char *use_libctx
= NULL
;
62 signal(SIGPIPE
, SIG_IGN
);
65 /* Set non-default library initialisation settings */
66 if (!OPENSSL_init_ssl(OPENSSL_INIT_ENGINE_ALL_BUILTIN
67 | OPENSSL_INIT_LOAD_CONFIG
, NULL
))
70 (void)setup_ui_method();
71 (void)setup_engine_loader();
74 * NOTE: This is an undocumented feature required for testing only.
75 * There are no guarantees that it will exist in future builds.
77 use_libctx
= getenv("OPENSSL_TEST_LIBCTX");
78 if (use_libctx
!= NULL
) {
79 /* Set this to "1" to create a global libctx */
80 if (strcmp(use_libctx
, "1") == 0) {
81 if (app_create_libctx() == NULL
)
89 static void apps_shutdown(void)
91 app_providers_cleanup();
92 OSSL_LIB_CTX_free(app_get0_libctx());
93 destroy_engine_loader();
98 #ifndef OPENSSL_NO_TRACE
99 typedef struct tracedata_st
{
101 unsigned int ingroup
:1;
104 static size_t internal_trace_cb(const char *buf
, size_t cnt
,
105 int category
, int cmd
, void *vdata
)
108 tracedata
*trace_data
= vdata
;
109 char buffer
[256], *hex
;
110 CRYPTO_THREAD_ID tid
;
113 case OSSL_TRACE_CTRL_BEGIN
:
114 if (trace_data
->ingroup
) {
115 BIO_printf(bio_err
, "ERROR: tracing already started\n");
118 trace_data
->ingroup
= 1;
120 tid
= CRYPTO_THREAD_get_current_id();
121 hex
= OPENSSL_buf2hexstr((const unsigned char *)&tid
, sizeof(tid
));
122 BIO_snprintf(buffer
, sizeof(buffer
), "TRACE[%s]:%s: ",
123 hex
== NULL
? "<null>" : hex
,
124 OSSL_trace_get_category_name(category
));
126 BIO_set_prefix(trace_data
->bio
, buffer
);
128 case OSSL_TRACE_CTRL_WRITE
:
129 if (!trace_data
->ingroup
) {
130 BIO_printf(bio_err
, "ERROR: writing when tracing not started\n");
134 ret
= BIO_write(trace_data
->bio
, buf
, cnt
);
136 case OSSL_TRACE_CTRL_END
:
137 if (!trace_data
->ingroup
) {
138 BIO_printf(bio_err
, "ERROR: finishing when tracing not started\n");
141 trace_data
->ingroup
= 0;
143 BIO_set_prefix(trace_data
->bio
, NULL
);
148 return ret
< 0 ? 0 : ret
;
151 DEFINE_STACK_OF(tracedata
)
152 static STACK_OF(tracedata
) *trace_data_stack
;
154 static void tracedata_free(tracedata
*data
)
156 BIO_free_all(data
->bio
);
160 static STACK_OF(tracedata
) *trace_data_stack
;
162 static void cleanup_trace(void)
164 sk_tracedata_pop_free(trace_data_stack
, tracedata_free
);
167 static void setup_trace_category(int category
)
170 tracedata
*trace_data
;
172 if (OSSL_trace_enabled(category
))
175 channel
= BIO_push(BIO_new(BIO_f_prefix()), dup_bio_err(FORMAT_TEXT
));
176 trace_data
= OPENSSL_zalloc(sizeof(*trace_data
));
178 if (trace_data
== NULL
179 || (trace_data
->bio
= channel
) == NULL
180 || OSSL_trace_set_callback(category
, internal_trace_cb
,
182 || sk_tracedata_push(trace_data_stack
, trace_data
) == 0) {
185 "warning: unable to setup trace callback for category '%s'.\n",
186 OSSL_trace_get_category_name(category
));
188 OSSL_trace_set_callback(category
, NULL
, NULL
);
189 BIO_free_all(channel
);
193 static void setup_trace(const char *str
)
198 * We add this handler as early as possible to ensure it's executed
199 * as late as possible, i.e. after the TRACE code has done its cleanup
200 * (which happens last in OPENSSL_cleanup).
202 atexit(cleanup_trace
);
204 trace_data_stack
= sk_tracedata_new_null();
205 val
= OPENSSL_strdup(str
);
211 for (valp
= val
; (item
= strtok(valp
, ",")) != NULL
; valp
= NULL
) {
212 int category
= OSSL_trace_get_category_num(item
);
214 if (category
== OSSL_TRACE_CATEGORY_ALL
) {
215 while (++category
< OSSL_TRACE_CATEGORY_NUM
)
216 setup_trace_category(category
);
218 } else if (category
> 0) {
219 setup_trace_category(category
);
222 "warning: unknown trace category: '%s'.\n", item
);
229 #endif /* OPENSSL_NO_TRACE */
231 static char *help_argv
[] = { "help", NULL
};
233 int main(int argc
, char *argv
[])
236 LHASH_OF(FUNCTION
) *prog
= NULL
;
246 /* Set up some of the environment. */
247 bio_in
= dup_bio_in(FORMAT_TEXT
);
248 bio_out
= dup_bio_out(FORMAT_TEXT
);
249 bio_err
= dup_bio_err(FORMAT_TEXT
);
251 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
252 argv
= copy_argv(&argc
, argv
);
253 #elif defined(_WIN32)
254 /* Replace argv[] with UTF-8 encoded strings. */
255 win32_utf8argv(&argc
, &argv
);
258 #ifndef OPENSSL_NO_TRACE
259 setup_trace(getenv("OPENSSL_TRACE"));
262 if ((fname
= "apps_startup", !apps_startup())
263 || (fname
= "prog_init", (prog
= prog_init()) == NULL
)) {
265 "FATAL: Startup failure (dev note: %s()) for %s\n",
267 ERR_print_errors(bio_err
);
271 pname
= opt_progname(argv
[0]);
273 default_config_file
= CONF_get1_default_config_file();
274 if (default_config_file
== NULL
)
275 app_bail_out("%s: could not get default config file\n", pname
);
277 /* first check the program name */
279 fp
= lh_FUNCTION_retrieve(prog
, &f
);
281 /* We assume we've been called as 'openssl ...' */
282 global_help
= argc
> 1
283 && (strcmp(argv
[1], "-help") == 0 || strcmp(argv
[1], "--help") == 0
284 || strcmp(argv
[1], "-h") == 0 || strcmp(argv
[1], "--h") == 0);
287 opt_appname(argc
== 1 || global_help
? "help" : argv
[0]);
292 /* If there's a command, run with that, otherwise "help". */
293 ret
= argc
== 0 || global_help
294 ? do_cmd(prog
, 1, help_argv
)
295 : do_cmd(prog
, argc
, argv
);
298 OPENSSL_free(default_config_file
);
299 lh_FUNCTION_free(prog
);
300 OPENSSL_free(arg
.argv
);
301 if (!app_RAND_write())
305 BIO_free_all(bio_out
);
311 typedef enum HELP_CHOICE
{
312 OPT_hERR
= -1, OPT_hEOF
= 0, OPT_hHELP
315 const OPTIONS help_options
[] = {
316 {OPT_HELP_STR
, 1, '-', "Usage: help [options] [command]\n"},
318 OPT_SECTION("General"),
319 {"help", OPT_hHELP
, '-', "Display this summary"},
322 {"command", 0, 0, "Name of command to display help (optional)"},
327 int help_main(int argc
, char **argv
)
337 prog
= opt_init(argc
, argv
, help_options
);
338 while ((o
= opt_next()) != OPT_hEOF
) {
342 BIO_printf(bio_err
, "%s: Use -help for summary.\n", prog
);
345 opt_help(help_options
);
350 /* One optional argument, the command to get help for. */
351 if (opt_num_rest() == 1) {
352 new_argv
[0] = opt_rest()[0];
353 new_argv
[1] = "--help";
355 return do_cmd(prog_init(), 2, new_argv
);
357 if (opt_num_rest() != 0) {
358 BIO_printf(bio_err
, "Usage: %s\n", prog
);
362 calculate_columns(functions
, &dc
);
363 BIO_printf(bio_err
, "%s:\n\nStandard commands", prog
);
366 for (fp
= functions
; fp
->name
!= NULL
; fp
++) {
368 if (i
++ % dc
.columns
== 0) {
369 BIO_printf(bio_err
, "\n");
372 if (fp
->type
!= tp
) {
375 BIO_printf(bio_err
, "\n");
379 "\nMessage Digest commands (see the `dgst' command for more details)\n");
380 } else if (tp
== FT_cipher
) {
383 "\nCipher commands (see the `enc' command for more details)\n");
386 BIO_printf(bio_err
, "%-*s", dc
.width
, fp
->name
);
388 BIO_printf(bio_err
, "\n\n");
392 static int do_cmd(LHASH_OF(FUNCTION
) *prog
, int argc
, char *argv
[])
396 if (argc
<= 0 || argv
[0] == NULL
)
399 fp
= lh_FUNCTION_retrieve(prog
, &f
);
401 if (EVP_get_digestbyname(argv
[0])) {
405 } else if (EVP_get_cipherbyname(argv
[0])) {
412 if (fp
->deprecated_alternative
!= NULL
)
414 return fp
->func(argc
, argv
);
416 if ((strncmp(argv
[0], "no-", 3)) == 0) {
418 * User is asking if foo is unsupported, by trying to "run" the
419 * no-foo command. Strange.
421 f
.name
= argv
[0] + 3;
422 if (lh_FUNCTION_retrieve(prog
, &f
) == NULL
) {
423 BIO_printf(bio_out
, "%s\n", argv
[0]);
426 BIO_printf(bio_out
, "%s\n", argv
[0] + 3);
430 BIO_printf(bio_err
, "Invalid command '%s'; type \"help\" for a list.\n",
435 static int function_cmp(const FUNCTION
* a
, const FUNCTION
* b
)
437 return strncmp(a
->name
, b
->name
, 8);
440 static unsigned long function_hash(const FUNCTION
* a
)
442 return OPENSSL_LH_strhash(a
->name
);
445 static int SortFnByName(const void *_f1
, const void *_f2
)
447 const FUNCTION
*f1
= _f1
;
448 const FUNCTION
*f2
= _f2
;
450 if (f1
->type
!= f2
->type
)
451 return f1
->type
- f2
->type
;
452 return strcmp(f1
->name
, f2
->name
);
455 static LHASH_OF(FUNCTION
) *prog_init(void)
457 static LHASH_OF(FUNCTION
) *ret
= NULL
;
458 static int prog_inited
= 0;
467 /* Sort alphabetically within category. For nicer help displays. */
468 for (i
= 0, f
= functions
; f
->name
!= NULL
; ++f
, ++i
)
470 qsort(functions
, i
, sizeof(*functions
), SortFnByName
);
472 if ((ret
= lh_FUNCTION_new(function_hash
, function_cmp
)) == NULL
)
475 for (f
= functions
; f
->name
!= NULL
; f
++)
476 (void)lh_FUNCTION_insert(ret
, f
);