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37 * The LHASH callbacks ("hash" & "cmp") have been replaced by functions with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 int apps_startup(void)
53 signal(SIGPIPE, SIG_IGN);
56 /* Set non-default library initialisation settings */
57 if (!OPENSSL_init_ssl(OPENSSL_INIT_ENGINE_ALL_BUILTIN
58 | OPENSSL_INIT_LOAD_CONFIG, NULL))
66 static void apps_shutdown(void)
71 static char *make_config_name(void)
77 if ((t = getenv("OPENSSL_CONF")) != NULL)
78 return OPENSSL_strdup(t);
80 t = X509_get_default_cert_area();
81 len = strlen(t) + 1 + strlen(OPENSSL_CONF) + 1;
82 p = app_malloc(len, "config filename buffer");
84 #ifndef OPENSSL_SYS_VMS
87 strcat(p, OPENSSL_CONF);
93 #ifndef OPENSSL_NO_TRACE
94 typedef struct tracedata_st {
96 unsigned int ingroup:1;
99 static size_t internal_trace_cb(const char *buf, size_t cnt,
100 int category, int cmd, void *vdata)
103 tracedata *trace_data = vdata;
104 char buffer[256], *hex;
105 CRYPTO_THREAD_ID tid;
108 case OSSL_TRACE_CTRL_BEGIN:
109 if (!ossl_assert(!trace_data->ingroup))
111 trace_data->ingroup = 1;
113 tid = CRYPTO_THREAD_get_current_id();
114 hex = OPENSSL_buf2hexstr((const unsigned char *)&tid, sizeof(tid));
115 BIO_snprintf(buffer, sizeof(buffer), "TRACE[%s]:%s: ",
116 hex == NULL ? "<null>" : hex,
117 OSSL_trace_get_category_name(category));
119 BIO_ctrl(trace_data->bio, PREFIX_CTRL_SET_PREFIX,
120 strlen(buffer), buffer);
122 case OSSL_TRACE_CTRL_WRITE:
123 if (!ossl_assert(trace_data->ingroup))
126 ret = BIO_write(trace_data->bio, buf, cnt);
128 case OSSL_TRACE_CTRL_END:
129 if (!ossl_assert(trace_data->ingroup))
131 trace_data->ingroup = 0;
133 BIO_ctrl(trace_data->bio, PREFIX_CTRL_SET_PREFIX, 0, NULL);
138 return ret < 0 ? 0 : ret;
141 DEFINE_STACK_OF(tracedata)
142 static STACK_OF(tracedata) *trace_data_stack;
144 static void tracedata_free(tracedata *data)
146 BIO_free_all(data->bio);
150 static STACK_OF(tracedata) *trace_data_stack;
152 static void cleanup_trace(void)
154 sk_tracedata_pop_free(trace_data_stack, tracedata_free);
157 static void setup_trace_category(int category)
160 tracedata *trace_data;
162 if (OSSL_trace_enabled(category))
165 channel = BIO_push(BIO_new(apps_bf_prefix()),
166 dup_bio_err(FORMAT_TEXT));
167 trace_data = OPENSSL_zalloc(sizeof(*trace_data));
169 if (trace_data == NULL
170 || (trace_data->bio = channel) == NULL
171 || OSSL_trace_set_callback(category, internal_trace_cb,
173 || sk_tracedata_push(trace_data_stack, trace_data) == 0) {
176 "warning: unable to setup trace callback for category '%s'.\n",
177 OSSL_trace_get_category_name(category));
179 OSSL_trace_set_callback(category, NULL, NULL);
180 BIO_free_all(channel);
184 static void setup_trace(const char *str)
189 * We add this handler as early as possible to ensure it's executed
190 * as late as possible, i.e. after the TRACE code has done its cleanup
191 * (which happens last in OPENSSL_cleanup).
193 atexit(cleanup_trace);
195 trace_data_stack = sk_tracedata_new_null();
196 val = OPENSSL_strdup(str);
202 for (valp = val; (item = strtok(valp, ",")) != NULL; valp = NULL) {
203 int category = OSSL_trace_get_category_num(item);
205 if (category == OSSL_TRACE_CATEGORY_ALL) {
206 while (++category < OSSL_TRACE_CATEGORY_NUM)
207 setup_trace_category(category);
209 } else if (category > 0) {
210 setup_trace_category(category);
213 "warning: unknown trace category: '%s'.\n", item);
220 #endif /* OPENSSL_NO_TRACE */
222 int main(int argc, char *argv[])
225 LHASH_OF(FUNCTION) *prog = NULL;
230 int first, n, i, ret = 0;
235 /* Set up some of the environment. */
236 default_config_file = make_config_name();
237 bio_in = dup_bio_in(FORMAT_TEXT);
238 bio_out = dup_bio_out(FORMAT_TEXT);
239 bio_err = dup_bio_err(FORMAT_TEXT);
241 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
242 argv = copy_argv(&argc, argv);
243 #elif defined(_WIN32)
245 * Replace argv[] with UTF-8 encoded strings.
247 win32_utf8argv(&argc, &argv);
251 * We use the prefix method to get the trace output we want. Since some
252 * trace outputs happen with OPENSSL_cleanup(), which is run automatically
253 * after exit(), we need to destroy the prefix method as late as possible.
255 atexit(destroy_prefix_method);
257 #ifndef OPENSSL_NO_TRACE
258 setup_trace(getenv("OPENSSL_TRACE"));
261 p = getenv("OPENSSL_DEBUG_MEMORY");
262 if (p != NULL && strcmp(p, "on") == 0)
263 CRYPTO_set_mem_debug(1);
264 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
266 if (getenv("OPENSSL_FIPS")) {
267 BIO_printf(bio_err, "FIPS mode not supported.\n");
271 if (!apps_startup()) {
273 "FATAL: Startup failure (dev note: apps_startup() failed)\n");
274 ERR_print_errors(bio_err);
282 "FATAL: Startup failure (dev note: prog_init() failed)\n");
283 ERR_print_errors(bio_err);
287 pname = opt_progname(argv[0]);
289 /* first check the program name */
291 fp = lh_FUNCTION_retrieve(prog, &f);
294 ret = fp->func(argc, argv);
298 /* If there is stuff on the command line, run with that. */
302 ret = do_cmd(prog, argc, argv);
308 /* ok, lets enter interactive mode */
311 /* Read a line, continue reading if line ends with \ */
312 for (p = buf, n = sizeof(buf), i = 0, first = 1; n > 0; first = 0) {
313 prompt = first ? "OpenSSL> " : "> ";
316 fputs(prompt, stdout);
318 if (!fgets(p, n, stdin))
325 if (p[i - 2] != '\\')
332 extern char *readline(const char *);
333 extern void add_history(const char *cp);
336 text = readline(prompt);
342 if (text[i - 1] != '\\') {
343 p += strlen(strcpy(p, text));
350 p += strlen(strcpy(p, text));
357 if (!chopup_args(&arg, buf)) {
358 BIO_printf(bio_err, "Can't parse (no memory?)\n");
362 ret = do_cmd(prog, arg.argc, arg.argv);
363 if (ret == EXIT_THE_PROGRAM) {
368 BIO_printf(bio_err, "error in %s\n", arg.argv[0]);
369 (void)BIO_flush(bio_out);
370 (void)BIO_flush(bio_err);
374 OPENSSL_free(default_config_file);
375 lh_FUNCTION_free(prog);
376 OPENSSL_free(arg.argv);
380 BIO_free_all(bio_out);
382 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
383 if (CRYPTO_mem_leaks(bio_err) <= 0)
390 typedef enum HELP_CHOICE {
391 OPT_hERR = -1, OPT_hEOF = 0, OPT_hHELP
394 const OPTIONS help_options[] = {
395 {OPT_HELP_STR, 1, '-', "Usage: help [options] [command]\n"},
397 OPT_SECTION("General"),
398 {"help", OPT_hHELP, '-', "Display this summary"},
401 {"command", 0, 0, "Name of command to display help (optional)"},
406 int help_main(int argc, char **argv)
415 prog = opt_init(argc, argv, help_options);
416 while ((o = opt_next()) != OPT_hEOF) {
420 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
423 opt_help(help_options);
428 if (opt_num_rest() == 1) {
431 new_argv[0] = opt_rest()[0];
432 new_argv[1] = "--help";
434 return do_cmd(prog_init(), 2, new_argv);
436 if (opt_num_rest() != 0) {
437 BIO_printf(bio_err, "Usage: %s\n", prog);
441 calculate_columns(functions, &dc);
442 BIO_printf(bio_err, "Standard commands");
445 for (fp = functions; fp->name != NULL; fp++) {
447 if (i++ % dc.columns == 0) {
448 BIO_printf(bio_err, "\n");
451 if (fp->type != tp) {
454 BIO_printf(bio_err, "\n");
458 "\nMessage Digest commands (see the `dgst' command for more details)\n");
459 } else if (tp == FT_cipher) {
462 "\nCipher commands (see the `enc' command for more details)\n");
465 BIO_printf(bio_err, "%-*s", dc.width, fp->name);
467 BIO_printf(bio_err, "\n\n");
471 static int do_cmd(LHASH_OF(FUNCTION) *prog, int argc, char *argv[])
475 if (argc <= 0 || argv[0] == NULL)
478 fp = lh_FUNCTION_retrieve(prog, &f);
480 if (EVP_get_digestbyname(argv[0])) {
484 } else if (EVP_get_cipherbyname(argv[0])) {
491 return fp->func(argc, argv);
493 if ((strncmp(argv[0], "no-", 3)) == 0) {
495 * User is asking if foo is unsupported, by trying to "run" the
496 * no-foo command. Strange.
498 f.name = argv[0] + 3;
499 if (lh_FUNCTION_retrieve(prog, &f) == NULL) {
500 BIO_printf(bio_out, "%s\n", argv[0]);
503 BIO_printf(bio_out, "%s\n", argv[0] + 3);
506 if (strcmp(argv[0], "quit") == 0 || strcmp(argv[0], "q") == 0 ||
507 strcmp(argv[0], "exit") == 0 || strcmp(argv[0], "bye") == 0)
508 /* Special value to mean "exit the program. */
509 return EXIT_THE_PROGRAM;
511 BIO_printf(bio_err, "Invalid command '%s'; type \"help\" for a list.\n",
516 static int function_cmp(const FUNCTION * a, const FUNCTION * b)
518 return strncmp(a->name, b->name, 8);
521 static unsigned long function_hash(const FUNCTION * a)
523 return OPENSSL_LH_strhash(a->name);
526 static int SortFnByName(const void *_f1, const void *_f2)
528 const FUNCTION *f1 = _f1;
529 const FUNCTION *f2 = _f2;
531 if (f1->type != f2->type)
532 return f1->type - f2->type;
533 return strcmp(f1->name, f2->name);
536 static LHASH_OF(FUNCTION) *prog_init(void)
538 static LHASH_OF(FUNCTION) *ret = NULL;
539 static int prog_inited = 0;
548 /* Sort alphabetically within category. For nicer help displays. */
549 for (i = 0, f = functions; f->name != NULL; ++f, ++i)
551 qsort(functions, i, sizeof(*functions), SortFnByName);
553 if ((ret = lh_FUNCTION_new(function_hash, function_cmp)) == NULL)
556 for (f = functions; f->name != NULL; f++)
557 (void)lh_FUNCTION_insert(ret, f);