2 * Copyright 1995-2019 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
10 #include <internal/cryptlib.h>
14 #include <openssl/bio.h>
15 #include <openssl/crypto.h>
16 #include <openssl/trace.h>
17 #include <openssl/lhash.h>
18 #include <openssl/conf.h>
19 #include <openssl/x509.h>
20 #include <openssl/pem.h>
21 #include <openssl/ssl.h>
22 #ifndef OPENSSL_NO_ENGINE
23 # include <openssl/engine.h>
25 #include <openssl/err.h>
26 /* Needed to get the other O_xxx flags. */
27 #ifdef OPENSSL_SYS_VMS
33 /* Special sentinel to exit the program. */
34 #define EXIT_THE_PROGRAM (-1)
37 * The LHASH callbacks ("hash" & "cmp") have been replaced by functions with
38 * the base prototypes (we cast each variable inside the function to the
39 * required type of "FUNCTION*"). This removes the necessity for
40 * macro-generated wrapper functions.
42 static LHASH_OF(FUNCTION) *prog_init(void);
43 static int do_cmd(LHASH_OF(FUNCTION) *prog, int argc, char *argv[]);
44 char *default_config_file = NULL;
50 static void warn_deprecated(const char *pname,
51 const char *deprecated_alternative)
53 BIO_printf(bio_err, "The command %s is deprecated.", pname);
54 if (strcmp(deprecated_alternative, DEPRECATED_NO_ALTERNATIVE) != 0)
55 BIO_printf(bio_err, " Use '%s' instead.", deprecated_alternative);
56 BIO_printf(bio_err, "\n");
59 static int apps_startup(void)
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))
75 static void apps_shutdown(void)
80 static char *make_config_name(void)
86 if ((t = getenv("OPENSSL_CONF")) != NULL)
87 return OPENSSL_strdup(t);
89 t = X509_get_default_cert_area();
90 len = strlen(t) + 1 + strlen(OPENSSL_CONF) + 1;
91 p = app_malloc(len, "config filename buffer");
93 #ifndef OPENSSL_SYS_VMS
96 strcat(p, OPENSSL_CONF);
102 #ifndef OPENSSL_NO_TRACE
103 typedef struct tracedata_st {
105 unsigned int ingroup:1;
108 static size_t internal_trace_cb(const char *buf, size_t cnt,
109 int category, int cmd, void *vdata)
112 tracedata *trace_data = vdata;
113 char buffer[256], *hex;
114 CRYPTO_THREAD_ID tid;
117 case OSSL_TRACE_CTRL_BEGIN:
118 if (!ossl_assert(!trace_data->ingroup))
120 trace_data->ingroup = 1;
122 tid = CRYPTO_THREAD_get_current_id();
123 hex = OPENSSL_buf2hexstr((const unsigned char *)&tid, sizeof(tid));
124 BIO_snprintf(buffer, sizeof(buffer), "TRACE[%s]:%s: ",
125 hex == NULL ? "<null>" : hex,
126 OSSL_trace_get_category_name(category));
128 BIO_set_prefix(trace_data->bio, buffer);
130 case OSSL_TRACE_CTRL_WRITE:
131 if (!ossl_assert(trace_data->ingroup))
134 ret = BIO_write(trace_data->bio, buf, cnt);
136 case OSSL_TRACE_CTRL_END:
137 if (!ossl_assert(trace_data->ingroup))
139 trace_data->ingroup = 0;
141 BIO_set_prefix(trace_data->bio, NULL);
146 return ret < 0 ? 0 : ret;
149 DEFINE_STACK_OF(tracedata)
150 static STACK_OF(tracedata) *trace_data_stack;
152 static void tracedata_free(tracedata *data)
154 BIO_free_all(data->bio);
158 static STACK_OF(tracedata) *trace_data_stack;
160 static void cleanup_trace(void)
162 sk_tracedata_pop_free(trace_data_stack, tracedata_free);
165 static void setup_trace_category(int category)
168 tracedata *trace_data;
170 if (OSSL_trace_enabled(category))
173 channel = BIO_push(BIO_new(BIO_f_prefix()), dup_bio_err(FORMAT_TEXT));
174 trace_data = OPENSSL_zalloc(sizeof(*trace_data));
176 if (trace_data == NULL
177 || (trace_data->bio = channel) == NULL
178 || OSSL_trace_set_callback(category, internal_trace_cb,
180 || sk_tracedata_push(trace_data_stack, trace_data) == 0) {
183 "warning: unable to setup trace callback for category '%s'.\n",
184 OSSL_trace_get_category_name(category));
186 OSSL_trace_set_callback(category, NULL, NULL);
187 BIO_free_all(channel);
191 static void setup_trace(const char *str)
196 * We add this handler as early as possible to ensure it's executed
197 * as late as possible, i.e. after the TRACE code has done its cleanup
198 * (which happens last in OPENSSL_cleanup).
200 atexit(cleanup_trace);
202 trace_data_stack = sk_tracedata_new_null();
203 val = OPENSSL_strdup(str);
209 for (valp = val; (item = strtok(valp, ",")) != NULL; valp = NULL) {
210 int category = OSSL_trace_get_category_num(item);
212 if (category == OSSL_TRACE_CATEGORY_ALL) {
213 while (++category < OSSL_TRACE_CATEGORY_NUM)
214 setup_trace_category(category);
216 } else if (category > 0) {
217 setup_trace_category(category);
220 "warning: unknown trace category: '%s'.\n", item);
227 #endif /* OPENSSL_NO_TRACE */
229 int main(int argc, char *argv[])
232 LHASH_OF(FUNCTION) *prog = NULL;
237 int first, n, i, ret = 0;
242 /* Set up some of the environment. */
243 default_config_file = make_config_name();
244 bio_in = dup_bio_in(FORMAT_TEXT);
245 bio_out = dup_bio_out(FORMAT_TEXT);
246 bio_err = dup_bio_err(FORMAT_TEXT);
248 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
249 argv = copy_argv(&argc, argv);
250 #elif defined(_WIN32)
252 * Replace argv[] with UTF-8 encoded strings.
254 win32_utf8argv(&argc, &argv);
257 #ifndef OPENSSL_NO_TRACE
258 setup_trace(getenv("OPENSSL_TRACE"));
261 if (getenv("OPENSSL_FIPS")) {
262 BIO_printf(bio_err, "FIPS mode not supported.\n");
266 if (!apps_startup()) {
268 "FATAL: Startup failure (dev note: apps_startup() failed)\n");
269 ERR_print_errors(bio_err);
277 "FATAL: Startup failure (dev note: prog_init() failed)\n");
278 ERR_print_errors(bio_err);
282 pname = opt_progname(argv[0]);
284 /* first check the program name */
286 fp = lh_FUNCTION_retrieve(prog, &f);
289 if (fp->deprecated_alternative != NULL)
290 warn_deprecated(pname, fp->deprecated_alternative);
291 ret = fp->func(argc, argv);
295 /* If there is stuff on the command line, run with that. */
299 ret = do_cmd(prog, argc, argv);
305 /* ok, lets enter interactive mode */
308 /* Read a line, continue reading if line ends with \ */
309 for (p = buf, n = sizeof(buf), i = 0, first = 1; n > 0; first = 0) {
310 prompt = first ? "OpenSSL> " : "> ";
313 fputs(prompt, stdout);
315 if (!fgets(p, n, stdin))
322 if (p[i - 2] != '\\')
329 extern char *readline(const char *);
330 extern void add_history(const char *cp);
333 text = readline(prompt);
339 if (text[i - 1] != '\\') {
340 p += strlen(strcpy(p, text));
347 p += strlen(strcpy(p, text));
354 if (!chopup_args(&arg, buf)) {
355 BIO_printf(bio_err, "Can't parse (no memory?)\n");
359 ret = do_cmd(prog, arg.argc, arg.argv);
360 if (ret == EXIT_THE_PROGRAM) {
365 BIO_printf(bio_err, "error in %s\n", arg.argv[0]);
366 (void)BIO_flush(bio_out);
367 (void)BIO_flush(bio_err);
371 OPENSSL_free(default_config_file);
372 lh_FUNCTION_free(prog);
373 OPENSSL_free(arg.argv);
377 BIO_free_all(bio_out);
383 typedef enum HELP_CHOICE {
384 OPT_hERR = -1, OPT_hEOF = 0, OPT_hHELP
387 const OPTIONS help_options[] = {
388 {OPT_HELP_STR, 1, '-', "Usage: help [options] [command]\n"},
390 OPT_SECTION("General"),
391 {"help", OPT_hHELP, '-', "Display this summary"},
394 {"command", 0, 0, "Name of command to display help (optional)"},
399 int help_main(int argc, char **argv)
408 prog = opt_init(argc, argv, help_options);
409 while ((o = opt_next()) != OPT_hEOF) {
413 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
416 opt_help(help_options);
421 if (opt_num_rest() == 1) {
424 new_argv[0] = opt_rest()[0];
425 new_argv[1] = "--help";
427 return do_cmd(prog_init(), 2, new_argv);
429 if (opt_num_rest() != 0) {
430 BIO_printf(bio_err, "Usage: %s\n", prog);
434 calculate_columns(functions, &dc);
435 BIO_printf(bio_err, "Standard commands");
438 for (fp = functions; fp->name != NULL; fp++) {
440 if (i++ % dc.columns == 0) {
441 BIO_printf(bio_err, "\n");
444 if (fp->type != tp) {
447 BIO_printf(bio_err, "\n");
451 "\nMessage Digest commands (see the `dgst' command for more details)\n");
452 } else if (tp == FT_cipher) {
455 "\nCipher commands (see the `enc' command for more details)\n");
458 BIO_printf(bio_err, "%-*s", dc.width, fp->name);
460 BIO_printf(bio_err, "\n\n");
464 static int do_cmd(LHASH_OF(FUNCTION) *prog, int argc, char *argv[])
468 if (argc <= 0 || argv[0] == NULL)
471 fp = lh_FUNCTION_retrieve(prog, &f);
473 if (EVP_get_digestbyname(argv[0])) {
477 } else if (EVP_get_cipherbyname(argv[0])) {
484 if (fp->deprecated_alternative != NULL)
485 warn_deprecated(fp->name, fp->deprecated_alternative);
486 return fp->func(argc, argv);
488 if ((strncmp(argv[0], "no-", 3)) == 0) {
490 * User is asking if foo is unsupported, by trying to "run" the
491 * no-foo command. Strange.
493 f.name = argv[0] + 3;
494 if (lh_FUNCTION_retrieve(prog, &f) == NULL) {
495 BIO_printf(bio_out, "%s\n", argv[0]);
498 BIO_printf(bio_out, "%s\n", argv[0] + 3);
501 if (strcmp(argv[0], "quit") == 0 || strcmp(argv[0], "q") == 0 ||
502 strcmp(argv[0], "exit") == 0 || strcmp(argv[0], "bye") == 0)
503 /* Special value to mean "exit the program. */
504 return EXIT_THE_PROGRAM;
506 BIO_printf(bio_err, "Invalid command '%s'; type \"help\" for a list.\n",
511 static int function_cmp(const FUNCTION * a, const FUNCTION * b)
513 return strncmp(a->name, b->name, 8);
516 static unsigned long function_hash(const FUNCTION * a)
518 return OPENSSL_LH_strhash(a->name);
521 static int SortFnByName(const void *_f1, const void *_f2)
523 const FUNCTION *f1 = _f1;
524 const FUNCTION *f2 = _f2;
526 if (f1->type != f2->type)
527 return f1->type - f2->type;
528 return strcmp(f1->name, f2->name);
531 static LHASH_OF(FUNCTION) *prog_init(void)
533 static LHASH_OF(FUNCTION) *ret = NULL;
534 static int prog_inited = 0;
543 /* Sort alphabetically within category. For nicer help displays. */
544 for (i = 0, f = functions; f->name != NULL; ++f, ++i)
546 qsort(functions, i, sizeof(*functions), SortFnByName);
548 if ((ret = lh_FUNCTION_new(function_hash, function_cmp)) == NULL)
551 for (f = functions; f->name != NULL; f++)
552 (void)lh_FUNCTION_insert(ret, f);