| /* |
| * Copyright 2000-2017 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 <openssl/opensslconf.h> |
| #ifdef OPENSSL_NO_ENGINE |
| NON_EMPTY_TRANSLATION_UNIT |
| #else |
| |
| # include "apps.h" |
| # include <stdio.h> |
| # include <stdlib.h> |
| # include <string.h> |
| # include <openssl/err.h> |
| # include <openssl/engine.h> |
| # include <openssl/ssl.h> |
| # include <openssl/store.h> |
| |
| typedef enum OPTION_choice { |
| OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, |
| OPT_C, OPT_T, OPT_TT, OPT_PRE, OPT_POST, |
| OPT_V = 100, OPT_VV, OPT_VVV, OPT_VVVV |
| } OPTION_CHOICE; |
| |
| const OPTIONS engine_options[] = { |
| {OPT_HELP_STR, 1, '-', "Usage: %s [options] engine...\n"}, |
| {OPT_HELP_STR, 1, '-', |
| " engine... Engines to load\n"}, |
| {"help", OPT_HELP, '-', "Display this summary"}, |
| {"v", OPT_V, '-', "List 'control commands' For each specified engine"}, |
| {"vv", OPT_VV, '-', "Also display each command's description"}, |
| {"vvv", OPT_VVV, '-', "Also add the input flags for each command"}, |
| {"vvvv", OPT_VVVV, '-', "Also show internal input flags"}, |
| {"c", OPT_C, '-', "List the capabilities of specified engine"}, |
| {"t", OPT_T, '-', "Check that specified engine is available"}, |
| {"tt", OPT_TT, '-', "Display error trace for unavailable engines"}, |
| {"pre", OPT_PRE, 's', "Run command against the ENGINE before loading it"}, |
| {"post", OPT_POST, 's', "Run command against the ENGINE after loading it"}, |
| {OPT_MORE_STR, OPT_EOF, 1, |
| "Commands are like \"SO_PATH:/lib/libdriver.so\""}, |
| {NULL} |
| }; |
| |
| static int append_buf(char **buf, int *size, const char *s) |
| { |
| const int expand = 256; |
| int len = strlen(s) + 1; |
| char *p = *buf; |
| |
| if (p == NULL) { |
| *size = ((len + expand - 1) / expand) * expand; |
| p = *buf = app_malloc(*size, "engine buffer"); |
| } else { |
| const int blen = strlen(p); |
| |
| if (blen > 0) |
| len += 2 + blen; |
| |
| if (len > *size) { |
| *size = ((len + expand - 1) / expand) * expand; |
| p = OPENSSL_realloc(p, *size); |
| if (p == NULL) { |
| OPENSSL_free(*buf); |
| *buf = NULL; |
| return 0; |
| } |
| *buf = p; |
| } |
| |
| if (blen > 0) { |
| p += blen; |
| *p++ = ','; |
| *p++ = ' '; |
| } |
| } |
| |
| strcpy(p, s); |
| return 1; |
| } |
| |
| static int util_flags(BIO *out, unsigned int flags, const char *indent) |
| { |
| int started = 0, err = 0; |
| /* Indent before displaying input flags */ |
| BIO_printf(out, "%s%s(input flags): ", indent, indent); |
| if (flags == 0) { |
| BIO_printf(out, "<no flags>\n"); |
| return 1; |
| } |
| /* |
| * If the object is internal, mark it in a way that shows instead of |
| * having it part of all the other flags, even if it really is. |
| */ |
| if (flags & ENGINE_CMD_FLAG_INTERNAL) { |
| BIO_printf(out, "[Internal] "); |
| } |
| |
| if (flags & ENGINE_CMD_FLAG_NUMERIC) { |
| BIO_printf(out, "NUMERIC"); |
| started = 1; |
| } |
| /* |
| * Now we check that no combinations of the mutually exclusive NUMERIC, |
| * STRING, and NO_INPUT flags have been used. Future flags that can be |
| * OR'd together with these would need to added after these to preserve |
| * the testing logic. |
| */ |
| if (flags & ENGINE_CMD_FLAG_STRING) { |
| if (started) { |
| BIO_printf(out, "|"); |
| err = 1; |
| } |
| BIO_printf(out, "STRING"); |
| started = 1; |
| } |
| if (flags & ENGINE_CMD_FLAG_NO_INPUT) { |
| if (started) { |
| BIO_printf(out, "|"); |
| err = 1; |
| } |
| BIO_printf(out, "NO_INPUT"); |
| started = 1; |
| } |
| /* Check for unknown flags */ |
| flags = flags & ~ENGINE_CMD_FLAG_NUMERIC & |
| ~ENGINE_CMD_FLAG_STRING & |
| ~ENGINE_CMD_FLAG_NO_INPUT & ~ENGINE_CMD_FLAG_INTERNAL; |
| if (flags) { |
| if (started) |
| BIO_printf(out, "|"); |
| BIO_printf(out, "<0x%04X>", flags); |
| } |
| if (err) |
| BIO_printf(out, " <illegal flags!>"); |
| BIO_printf(out, "\n"); |
| return 1; |
| } |
| |
| static int util_verbose(ENGINE *e, int verbose, BIO *out, const char *indent) |
| { |
| static const int line_wrap = 78; |
| int num; |
| int ret = 0; |
| char *name = NULL; |
| char *desc = NULL; |
| int flags; |
| int xpos = 0; |
| STACK_OF(OPENSSL_STRING) *cmds = NULL; |
| if (!ENGINE_ctrl(e, ENGINE_CTRL_HAS_CTRL_FUNCTION, 0, NULL, NULL) || |
| ((num = ENGINE_ctrl(e, ENGINE_CTRL_GET_FIRST_CMD_TYPE, |
| 0, NULL, NULL)) <= 0)) { |
| return 1; |
| } |
| |
| cmds = sk_OPENSSL_STRING_new_null(); |
| if (cmds == NULL) |
| goto err; |
| |
| do { |
| int len; |
| /* Get the command input flags */ |
| if ((flags = ENGINE_ctrl(e, ENGINE_CTRL_GET_CMD_FLAGS, num, |
| NULL, NULL)) < 0) |
| goto err; |
| if (!(flags & ENGINE_CMD_FLAG_INTERNAL) || verbose >= 4) { |
| /* Get the command name */ |
| if ((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_LEN_FROM_CMD, num, |
| NULL, NULL)) <= 0) |
| goto err; |
| name = app_malloc(len + 1, "name buffer"); |
| if (ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_FROM_CMD, num, name, |
| NULL) <= 0) |
| goto err; |
| /* Get the command description */ |
| if ((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_LEN_FROM_CMD, num, |
| NULL, NULL)) < 0) |
| goto err; |
| if (len > 0) { |
| desc = app_malloc(len + 1, "description buffer"); |
| if (ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_FROM_CMD, num, desc, |
| NULL) <= 0) |
| goto err; |
| } |
| /* Now decide on the output */ |
| if (xpos == 0) |
| /* Do an indent */ |
| xpos = BIO_puts(out, indent); |
| else |
| /* Otherwise prepend a ", " */ |
| xpos += BIO_printf(out, ", "); |
| if (verbose == 1) { |
| /* |
| * We're just listing names, comma-delimited |
| */ |
| if ((xpos > (int)strlen(indent)) && |
| (xpos + (int)strlen(name) > line_wrap)) { |
| BIO_printf(out, "\n"); |
| xpos = BIO_puts(out, indent); |
| } |
| xpos += BIO_printf(out, "%s", name); |
| } else { |
| /* We're listing names plus descriptions */ |
| BIO_printf(out, "%s: %s\n", name, |
| (desc == NULL) ? "<no description>" : desc); |
| /* ... and sometimes input flags */ |
| if ((verbose >= 3) && !util_flags(out, flags, indent)) |
| goto err; |
| xpos = 0; |
| } |
| } |
| OPENSSL_free(name); |
| name = NULL; |
| OPENSSL_free(desc); |
| desc = NULL; |
| /* Move to the next command */ |
| num = ENGINE_ctrl(e, ENGINE_CTRL_GET_NEXT_CMD_TYPE, num, NULL, NULL); |
| } while (num > 0); |
| if (xpos > 0) |
| BIO_printf(out, "\n"); |
| ret = 1; |
| err: |
| sk_OPENSSL_STRING_free(cmds); |
| OPENSSL_free(name); |
| OPENSSL_free(desc); |
| return ret; |
| } |
| |
| static void util_do_cmds(ENGINE *e, STACK_OF(OPENSSL_STRING) *cmds, |
| BIO *out, const char *indent) |
| { |
| int loop, res, num = sk_OPENSSL_STRING_num(cmds); |
| |
| if (num < 0) { |
| BIO_printf(out, "[Error]: internal stack error\n"); |
| return; |
| } |
| for (loop = 0; loop < num; loop++) { |
| char buf[256]; |
| const char *cmd, *arg; |
| cmd = sk_OPENSSL_STRING_value(cmds, loop); |
| res = 1; /* assume success */ |
| /* Check if this command has no ":arg" */ |
| if ((arg = strstr(cmd, ":")) == NULL) { |
| if (!ENGINE_ctrl_cmd_string(e, cmd, NULL, 0)) |
| res = 0; |
| } else { |
| if ((int)(arg - cmd) > 254) { |
| BIO_printf(out, "[Error]: command name too long\n"); |
| return; |
| } |
| memcpy(buf, cmd, (int)(arg - cmd)); |
| buf[arg - cmd] = '\0'; |
| arg++; /* Move past the ":" */ |
| /* Call the command with the argument */ |
| if (!ENGINE_ctrl_cmd_string(e, buf, arg, 0)) |
| res = 0; |
| } |
| if (res) { |
| BIO_printf(out, "[Success]: %s\n", cmd); |
| } else { |
| BIO_printf(out, "[Failure]: %s\n", cmd); |
| ERR_print_errors(out); |
| } |
| } |
| } |
| |
| struct util_store_cap_data { |
| ENGINE *engine; |
| char **cap_buf; |
| int *cap_size; |
| int ok; |
| }; |
| static void util_store_cap(const OSSL_STORE_LOADER *loader, void *arg) |
| { |
| struct util_store_cap_data *ctx = arg; |
| |
| if (OSSL_STORE_LOADER_get0_engine(loader) == ctx->engine) { |
| char buf[256]; |
| BIO_snprintf(buf, sizeof(buf), "STORE(%s)", |
| OSSL_STORE_LOADER_get0_scheme(loader)); |
| if (!append_buf(ctx->cap_buf, ctx->cap_size, buf)) |
| ctx->ok = 0; |
| } |
| } |
| |
| int engine_main(int argc, char **argv) |
| { |
| int ret = 1, i; |
| int verbose = 0, list_cap = 0, test_avail = 0, test_avail_noise = 0; |
| ENGINE *e; |
| STACK_OF(OPENSSL_CSTRING) *engines = sk_OPENSSL_CSTRING_new_null(); |
| STACK_OF(OPENSSL_STRING) *pre_cmds = sk_OPENSSL_STRING_new_null(); |
| STACK_OF(OPENSSL_STRING) *post_cmds = sk_OPENSSL_STRING_new_null(); |
| BIO *out; |
| const char *indent = " "; |
| OPTION_CHOICE o; |
| char *prog; |
| char *argv1; |
| |
| out = dup_bio_out(FORMAT_TEXT); |
| if (engines == NULL || pre_cmds == NULL || post_cmds == NULL) |
| goto end; |
| |
| /* Remember the original command name, parse/skip any leading engine |
| * names, and then setup to parse the rest of the line as flags. */ |
| prog = argv[0]; |
| while ((argv1 = argv[1]) != NULL && *argv1 != '-') { |
| sk_OPENSSL_CSTRING_push(engines, argv1); |
| argc--; |
| argv++; |
| } |
| argv[0] = prog; |
| opt_init(argc, argv, engine_options); |
| |
| while ((o = opt_next()) != OPT_EOF) { |
| switch (o) { |
| case OPT_EOF: |
| case OPT_ERR: |
| BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); |
| goto end; |
| case OPT_HELP: |
| opt_help(engine_options); |
| ret = 0; |
| goto end; |
| case OPT_VVVV: |
| case OPT_VVV: |
| case OPT_VV: |
| case OPT_V: |
| /* Convert to an integer from one to four. */ |
| i = (int)(o - OPT_V) + 1; |
| if (verbose < i) |
| verbose = i; |
| break; |
| case OPT_C: |
| list_cap = 1; |
| break; |
| case OPT_TT: |
| test_avail_noise++; |
| /* fall thru */ |
| case OPT_T: |
| test_avail++; |
| break; |
| case OPT_PRE: |
| sk_OPENSSL_STRING_push(pre_cmds, opt_arg()); |
| break; |
| case OPT_POST: |
| sk_OPENSSL_STRING_push(post_cmds, opt_arg()); |
| break; |
| } |
| } |
| |
| /* Allow any trailing parameters as engine names. */ |
| argc = opt_num_rest(); |
| argv = opt_rest(); |
| for ( ; *argv; argv++) { |
| if (**argv == '-') { |
| BIO_printf(bio_err, "%s: Cannot mix flags and engine names.\n", |
| prog); |
| BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); |
| goto end; |
| } |
| sk_OPENSSL_CSTRING_push(engines, *argv); |
| } |
| |
| if (sk_OPENSSL_CSTRING_num(engines) == 0) { |
| for (e = ENGINE_get_first(); e != NULL; e = ENGINE_get_next(e)) { |
| sk_OPENSSL_CSTRING_push(engines, ENGINE_get_id(e)); |
| } |
| } |
| |
| ret = 0; |
| for (i = 0; i < sk_OPENSSL_CSTRING_num(engines); i++) { |
| const char *id = sk_OPENSSL_CSTRING_value(engines, i); |
| if ((e = ENGINE_by_id(id)) != NULL) { |
| const char *name = ENGINE_get_name(e); |
| /* |
| * Do "id" first, then "name". Easier to auto-parse. |
| */ |
| BIO_printf(out, "(%s) %s\n", id, name); |
| util_do_cmds(e, pre_cmds, out, indent); |
| if (strcmp(ENGINE_get_id(e), id) != 0) { |
| BIO_printf(out, "Loaded: (%s) %s\n", |
| ENGINE_get_id(e), ENGINE_get_name(e)); |
| } |
| if (list_cap) { |
| int cap_size = 256; |
| char *cap_buf = NULL; |
| int k, n; |
| const int *nids; |
| ENGINE_CIPHERS_PTR fn_c; |
| ENGINE_DIGESTS_PTR fn_d; |
| ENGINE_PKEY_METHS_PTR fn_pk; |
| |
| if (ENGINE_get_RSA(e) != NULL |
| && !append_buf(&cap_buf, &cap_size, "RSA")) |
| goto end; |
| if (ENGINE_get_DSA(e) != NULL |
| && !append_buf(&cap_buf, &cap_size, "DSA")) |
| goto end; |
| if (ENGINE_get_DH(e) != NULL |
| && !append_buf(&cap_buf, &cap_size, "DH")) |
| goto end; |
| if (ENGINE_get_RAND(e) != NULL |
| && !append_buf(&cap_buf, &cap_size, "RAND")) |
| goto end; |
| |
| fn_c = ENGINE_get_ciphers(e); |
| if (fn_c == NULL) |
| goto skip_ciphers; |
| n = fn_c(e, NULL, &nids, 0); |
| for (k = 0; k < n; ++k) |
| if (!append_buf(&cap_buf, &cap_size, OBJ_nid2sn(nids[k]))) |
| goto end; |
| |
| skip_ciphers: |
| fn_d = ENGINE_get_digests(e); |
| if (fn_d == NULL) |
| goto skip_digests; |
| n = fn_d(e, NULL, &nids, 0); |
| for (k = 0; k < n; ++k) |
| if (!append_buf(&cap_buf, &cap_size, OBJ_nid2sn(nids[k]))) |
| goto end; |
| |
| skip_digests: |
| fn_pk = ENGINE_get_pkey_meths(e); |
| if (fn_pk == NULL) |
| goto skip_pmeths; |
| n = fn_pk(e, NULL, &nids, 0); |
| for (k = 0; k < n; ++k) |
| if (!append_buf(&cap_buf, &cap_size, OBJ_nid2sn(nids[k]))) |
| goto end; |
| skip_pmeths: |
| { |
| struct util_store_cap_data store_ctx; |
| |
| store_ctx.engine = e; |
| store_ctx.cap_buf = &cap_buf; |
| store_ctx.cap_size = &cap_size; |
| store_ctx.ok = 1; |
| |
| OSSL_STORE_do_all_loaders(util_store_cap, &store_ctx); |
| if (!store_ctx.ok) |
| goto end; |
| } |
| if (cap_buf != NULL && (*cap_buf != '\0')) |
| BIO_printf(out, " [%s]\n", cap_buf); |
| |
| OPENSSL_free(cap_buf); |
| } |
| if (test_avail) { |
| BIO_printf(out, "%s", indent); |
| if (ENGINE_init(e)) { |
| BIO_printf(out, "[ available ]\n"); |
| util_do_cmds(e, post_cmds, out, indent); |
| ENGINE_finish(e); |
| } else { |
| BIO_printf(out, "[ unavailable ]\n"); |
| if (test_avail_noise) |
| ERR_print_errors_fp(stdout); |
| ERR_clear_error(); |
| } |
| } |
| if ((verbose > 0) && !util_verbose(e, verbose, out, indent)) |
| goto end; |
| ENGINE_free(e); |
| } else { |
| ERR_print_errors(bio_err); |
| /* because exit codes above 127 have special meaning on Unix */ |
| if (++ret > 127) |
| ret = 127; |
| } |
| } |
| |
| end: |
| |
| ERR_print_errors(bio_err); |
| sk_OPENSSL_CSTRING_free(engines); |
| sk_OPENSSL_STRING_free(pre_cmds); |
| sk_OPENSSL_STRING_free(post_cmds); |
| BIO_free_all(out); |
| return ret; |
| } |
| #endif |
