| 1 | /*
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| 2 | * Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | /* We need to use some engine deprecated APIs */
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| 11 | #define OPENSSL_SUPPRESS_DEPRECATED
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| 12 |
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| 13 | #include <openssl/opensslconf.h>
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| 14 |
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| 15 | #include "apps.h"
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| 16 | #include "progs.h"
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| 17 | #include <stdio.h>
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| 18 | #include <stdlib.h>
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| 19 | #include <string.h>
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| 20 | #include <openssl/err.h>
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| 21 | #include <openssl/engine.h>
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| 22 | #include <openssl/ssl.h>
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| 23 | #include <openssl/store.h>
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| 24 |
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| 25 | typedef enum OPTION_choice {
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| 26 | OPT_COMMON,
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| 27 | OPT_C, OPT_T, OPT_TT, OPT_PRE, OPT_POST,
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| 28 | OPT_V = 100, OPT_VV, OPT_VVV, OPT_VVVV
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| 29 | } OPTION_CHOICE;
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| 30 |
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| 31 | const OPTIONS engine_options[] = {
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| 32 | {OPT_HELP_STR, 1, '-', "Usage: %s [options] engine...\n"},
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| 33 |
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| 34 | OPT_SECTION("General"),
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| 35 | {"help", OPT_HELP, '-', "Display this summary"},
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| 36 | {"t", OPT_T, '-', "Check that specified engine is available"},
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| 37 | {"pre", OPT_PRE, 's', "Run command against the ENGINE before loading it"},
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| 38 | {"post", OPT_POST, 's', "Run command against the ENGINE after loading it"},
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| 39 |
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| 40 | OPT_SECTION("Output"),
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| 41 | {"v", OPT_V, '-', "List 'control commands' For each specified engine"},
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| 42 | {"vv", OPT_VV, '-', "Also display each command's description"},
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| 43 | {"vvv", OPT_VVV, '-', "Also add the input flags for each command"},
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| 44 | {"vvvv", OPT_VVVV, '-', "Also show internal input flags"},
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| 45 | {"c", OPT_C, '-', "List the capabilities of specified engine"},
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| 46 | {"tt", OPT_TT, '-', "Display error trace for unavailable engines"},
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| 47 | {OPT_MORE_STR, OPT_EOF, 1,
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| 48 | "Commands are like \"SO_PATH:/lib/libdriver.so\""},
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| 49 |
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| 50 | OPT_PARAMETERS(),
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| 51 | {"engine", 0, 0, "ID of engine(s) to load"},
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| 52 | {NULL}
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| 53 | };
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| 54 |
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| 55 | static int append_buf(char **buf, int *size, const char *s)
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| 56 | {
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| 57 | const int expand = 256;
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| 58 | int len = strlen(s) + 1;
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| 59 | char *p = *buf;
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| 60 |
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| 61 | if (p == NULL) {
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| 62 | *size = ((len + expand - 1) / expand) * expand;
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| 63 | p = *buf = app_malloc(*size, "engine buffer");
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| 64 | } else {
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| 65 | const int blen = strlen(p);
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| 66 |
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| 67 | if (blen > 0)
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| 68 | len += 2 + blen;
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| 69 |
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| 70 | if (len > *size) {
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| 71 | *size = ((len + expand - 1) / expand) * expand;
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| 72 | p = OPENSSL_realloc(p, *size);
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| 73 | if (p == NULL) {
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| 74 | OPENSSL_free(*buf);
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| 75 | *buf = NULL;
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| 76 | return 0;
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| 77 | }
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| 78 | *buf = p;
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| 79 | }
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| 80 |
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| 81 | if (blen > 0) {
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| 82 | p += blen;
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| 83 | *p++ = ',';
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| 84 | *p++ = ' ';
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| 85 | }
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| 86 | }
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| 87 |
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| 88 | strcpy(p, s);
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| 89 | return 1;
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| 90 | }
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| 91 |
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| 92 | static int util_flags(BIO *out, unsigned int flags, const char *indent)
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| 93 | {
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| 94 | int started = 0, err = 0;
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| 95 | /* Indent before displaying input flags */
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| 96 | BIO_printf(out, "%s%s(input flags): ", indent, indent);
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| 97 | if (flags == 0) {
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| 98 | BIO_printf(out, "<no flags>\n");
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| 99 | return 1;
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| 100 | }
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| 101 | /*
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| 102 | * If the object is internal, mark it in a way that shows instead of
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| 103 | * having it part of all the other flags, even if it really is.
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| 104 | */
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| 105 | if (flags & ENGINE_CMD_FLAG_INTERNAL) {
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| 106 | BIO_printf(out, "[Internal] ");
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| 107 | }
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| 108 |
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| 109 | if (flags & ENGINE_CMD_FLAG_NUMERIC) {
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| 110 | BIO_printf(out, "NUMERIC");
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| 111 | started = 1;
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| 112 | }
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| 113 | /*
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| 114 | * Now we check that no combinations of the mutually exclusive NUMERIC,
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| 115 | * STRING, and NO_INPUT flags have been used. Future flags that can be
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| 116 | * OR'd together with these would need to added after these to preserve
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| 117 | * the testing logic.
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| 118 | */
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| 119 | if (flags & ENGINE_CMD_FLAG_STRING) {
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| 120 | if (started) {
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| 121 | BIO_printf(out, "|");
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| 122 | err = 1;
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| 123 | }
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| 124 | BIO_printf(out, "STRING");
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| 125 | started = 1;
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| 126 | }
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| 127 | if (flags & ENGINE_CMD_FLAG_NO_INPUT) {
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| 128 | if (started) {
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| 129 | BIO_printf(out, "|");
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| 130 | err = 1;
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| 131 | }
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| 132 | BIO_printf(out, "NO_INPUT");
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| 133 | started = 1;
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| 134 | }
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| 135 | /* Check for unknown flags */
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| 136 | flags = flags & ~ENGINE_CMD_FLAG_NUMERIC &
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| 137 | ~ENGINE_CMD_FLAG_STRING &
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| 138 | ~ENGINE_CMD_FLAG_NO_INPUT & ~ENGINE_CMD_FLAG_INTERNAL;
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| 139 | if (flags) {
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| 140 | if (started)
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| 141 | BIO_printf(out, "|");
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| 142 | BIO_printf(out, "<0x%04X>", flags);
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| 143 | }
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| 144 | if (err)
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| 145 | BIO_printf(out, " <illegal flags!>");
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| 146 | BIO_printf(out, "\n");
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| 147 | return 1;
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| 148 | }
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| 149 |
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| 150 | static int util_verbose(ENGINE *e, int verbose, BIO *out, const char *indent)
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| 151 | {
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| 152 | static const int line_wrap = 78;
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| 153 | int num;
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| 154 | int ret = 0;
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| 155 | char *name = NULL;
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| 156 | char *desc = NULL;
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| 157 | int flags;
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| 158 | int xpos = 0;
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| 159 | STACK_OF(OPENSSL_STRING) *cmds = NULL;
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| 160 | if (!ENGINE_ctrl(e, ENGINE_CTRL_HAS_CTRL_FUNCTION, 0, NULL, NULL) ||
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| 161 | ((num = ENGINE_ctrl(e, ENGINE_CTRL_GET_FIRST_CMD_TYPE,
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| 162 | 0, NULL, NULL)) <= 0)) {
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| 163 | return 1;
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| 164 | }
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| 165 |
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| 166 | cmds = sk_OPENSSL_STRING_new_null();
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| 167 | if (cmds == NULL)
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| 168 | goto err;
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| 169 |
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| 170 | do {
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| 171 | int len;
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| 172 | /* Get the command input flags */
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| 173 | if ((flags = ENGINE_ctrl(e, ENGINE_CTRL_GET_CMD_FLAGS, num,
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| 174 | NULL, NULL)) < 0)
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| 175 | goto err;
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| 176 | if (!(flags & ENGINE_CMD_FLAG_INTERNAL) || verbose >= 4) {
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| 177 | /* Get the command name */
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| 178 | if ((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_LEN_FROM_CMD, num,
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| 179 | NULL, NULL)) <= 0)
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| 180 | goto err;
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| 181 | name = app_malloc(len + 1, "name buffer");
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| 182 | if (ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_FROM_CMD, num, name,
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| 183 | NULL) <= 0)
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| 184 | goto err;
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| 185 | /* Get the command description */
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| 186 | if ((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_LEN_FROM_CMD, num,
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| 187 | NULL, NULL)) < 0)
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| 188 | goto err;
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| 189 | if (len > 0) {
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| 190 | desc = app_malloc(len + 1, "description buffer");
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| 191 | if (ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_FROM_CMD, num, desc,
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| 192 | NULL) <= 0)
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| 193 | goto err;
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| 194 | }
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| 195 | /* Now decide on the output */
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| 196 | if (xpos == 0)
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| 197 | /* Do an indent */
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| 198 | xpos = BIO_puts(out, indent);
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| 199 | else
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| 200 | /* Otherwise prepend a ", " */
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| 201 | xpos += BIO_printf(out, ", ");
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| 202 | if (verbose == 1) {
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| 203 | /*
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| 204 | * We're just listing names, comma-delimited
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| 205 | */
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| 206 | if ((xpos > (int)strlen(indent)) &&
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| 207 | (xpos + (int)strlen(name) > line_wrap)) {
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| 208 | BIO_printf(out, "\n");
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| 209 | xpos = BIO_puts(out, indent);
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| 210 | }
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| 211 | xpos += BIO_printf(out, "%s", name);
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| 212 | } else {
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| 213 | /* We're listing names plus descriptions */
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| 214 | BIO_printf(out, "%s: %s\n", name,
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| 215 | (desc == NULL) ? "<no description>" : desc);
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| 216 | /* ... and sometimes input flags */
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| 217 | if ((verbose >= 3) && !util_flags(out, flags, indent))
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| 218 | goto err;
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| 219 | xpos = 0;
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| 220 | }
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| 221 | }
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| 222 | OPENSSL_free(name);
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| 223 | name = NULL;
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| 224 | OPENSSL_free(desc);
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| 225 | desc = NULL;
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| 226 | /* Move to the next command */
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| 227 | num = ENGINE_ctrl(e, ENGINE_CTRL_GET_NEXT_CMD_TYPE, num, NULL, NULL);
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| 228 | } while (num > 0);
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| 229 | if (xpos > 0)
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| 230 | BIO_printf(out, "\n");
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| 231 | ret = 1;
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| 232 | err:
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| 233 | sk_OPENSSL_STRING_free(cmds);
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| 234 | OPENSSL_free(name);
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| 235 | OPENSSL_free(desc);
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| 236 | return ret;
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| 237 | }
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| 238 |
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| 239 | static void util_do_cmds(ENGINE *e, STACK_OF(OPENSSL_STRING) *cmds,
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| 240 | BIO *out, const char *indent)
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| 241 | {
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| 242 | int loop, res, num = sk_OPENSSL_STRING_num(cmds);
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| 243 |
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| 244 | if (num < 0) {
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| 245 | BIO_printf(out, "[Error]: internal stack error\n");
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| 246 | return;
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| 247 | }
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| 248 | for (loop = 0; loop < num; loop++) {
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| 249 | char buf[256];
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| 250 | const char *cmd, *arg;
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| 251 | cmd = sk_OPENSSL_STRING_value(cmds, loop);
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| 252 | res = 1; /* assume success */
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| 253 | /* Check if this command has no ":arg" */
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| 254 | if ((arg = strstr(cmd, ":")) == NULL) {
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| 255 | if (!ENGINE_ctrl_cmd_string(e, cmd, NULL, 0))
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| 256 | res = 0;
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| 257 | } else {
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| 258 | if ((int)(arg - cmd) > 254) {
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| 259 | BIO_printf(out, "[Error]: command name too long\n");
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| 260 | return;
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| 261 | }
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| 262 | memcpy(buf, cmd, (int)(arg - cmd));
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| 263 | buf[arg - cmd] = '\0';
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| 264 | arg++; /* Move past the ":" */
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| 265 | /* Call the command with the argument */
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| 266 | if (!ENGINE_ctrl_cmd_string(e, buf, arg, 0))
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| 267 | res = 0;
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| 268 | }
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| 269 | if (res) {
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| 270 | BIO_printf(out, "[Success]: %s\n", cmd);
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| 271 | } else {
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| 272 | BIO_printf(out, "[Failure]: %s\n", cmd);
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| 273 | ERR_print_errors(out);
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| 274 | }
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| 275 | }
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| 276 | }
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| 277 |
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| 278 | struct util_store_cap_data {
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| 279 | ENGINE *engine;
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| 280 | char **cap_buf;
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| 281 | int *cap_size;
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| 282 | int ok;
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| 283 | };
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| 284 | static void util_store_cap(const OSSL_STORE_LOADER *loader, void *arg)
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| 285 | {
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| 286 | struct util_store_cap_data *ctx = arg;
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| 287 |
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| 288 | if (OSSL_STORE_LOADER_get0_engine(loader) == ctx->engine) {
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| 289 | char buf[256];
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| 290 | BIO_snprintf(buf, sizeof(buf), "STORE(%s)",
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| 291 | OSSL_STORE_LOADER_get0_scheme(loader));
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| 292 | if (!append_buf(ctx->cap_buf, ctx->cap_size, buf))
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| 293 | ctx->ok = 0;
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| 294 | }
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| 295 | }
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| 296 |
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| 297 | int engine_main(int argc, char **argv)
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| 298 | {
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| 299 | int ret = 1, i;
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| 300 | int verbose = 0, list_cap = 0, test_avail = 0, test_avail_noise = 0;
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| 301 | ENGINE *e;
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| 302 | STACK_OF(OPENSSL_CSTRING) *engines = sk_OPENSSL_CSTRING_new_null();
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| 303 | STACK_OF(OPENSSL_STRING) *pre_cmds = sk_OPENSSL_STRING_new_null();
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| 304 | STACK_OF(OPENSSL_STRING) *post_cmds = sk_OPENSSL_STRING_new_null();
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| 305 | BIO *out;
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| 306 | const char *indent = " ";
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| 307 | OPTION_CHOICE o;
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| 308 | char *prog;
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| 309 | char *argv1;
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| 310 |
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| 311 | out = dup_bio_out(FORMAT_TEXT);
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| 312 | if (engines == NULL || pre_cmds == NULL || post_cmds == NULL)
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| 313 | goto end;
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| 314 |
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| 315 | /* Remember the original command name, parse/skip any leading engine
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| 316 | * names, and then setup to parse the rest of the line as flags. */
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| 317 | prog = argv[0];
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| 318 | while ((argv1 = argv[1]) != NULL && *argv1 != '-') {
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| 319 | sk_OPENSSL_CSTRING_push(engines, argv1);
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| 320 | argc--;
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| 321 | argv++;
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| 322 | }
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| 323 | argv[0] = prog;
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| 324 | opt_init(argc, argv, engine_options);
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| 325 |
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| 326 | while ((o = opt_next()) != OPT_EOF) {
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| 327 | switch (o) {
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| 328 | case OPT_EOF:
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| 329 | case OPT_ERR:
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| 330 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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| 331 | goto end;
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| 332 | case OPT_HELP:
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| 333 | opt_help(engine_options);
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| 334 | ret = 0;
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| 335 | goto end;
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| 336 | case OPT_VVVV:
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| 337 | case OPT_VVV:
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| 338 | case OPT_VV:
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| 339 | case OPT_V:
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| 340 | /* Convert to an integer from one to four. */
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| 341 | i = (int)(o - OPT_V) + 1;
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| 342 | if (verbose < i)
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| 343 | verbose = i;
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| 344 | break;
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| 345 | case OPT_C:
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| 346 | list_cap = 1;
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| 347 | break;
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| 348 | case OPT_TT:
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| 349 | test_avail_noise++;
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| 350 | /* fall thru */
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| 351 | case OPT_T:
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| 352 | test_avail++;
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| 353 | break;
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| 354 | case OPT_PRE:
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| 355 | sk_OPENSSL_STRING_push(pre_cmds, opt_arg());
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| 356 | break;
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| 357 | case OPT_POST:
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| 358 | sk_OPENSSL_STRING_push(post_cmds, opt_arg());
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| 359 | break;
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| 360 | }
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| 361 | }
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| 362 |
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| 363 | /* Any remaining arguments are engine names. */
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| 364 | argc = opt_num_rest();
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| 365 | argv = opt_rest();
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| 366 | for ( ; *argv; argv++) {
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| 367 | if (**argv == '-') {
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| 368 | BIO_printf(bio_err, "%s: Cannot mix flags and engine names.\n",
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| 369 | prog);
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| 370 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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| 371 | goto end;
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| 372 | }
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| 373 | sk_OPENSSL_CSTRING_push(engines, *argv);
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| 374 | }
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| 375 |
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| 376 | if (sk_OPENSSL_CSTRING_num(engines) == 0) {
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| 377 | for (e = ENGINE_get_first(); e != NULL; e = ENGINE_get_next(e)) {
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| 378 | sk_OPENSSL_CSTRING_push(engines, ENGINE_get_id(e));
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| 379 | }
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| 380 | }
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| 381 |
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| 382 | ret = 0;
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| 383 | for (i = 0; i < sk_OPENSSL_CSTRING_num(engines); i++) {
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| 384 | const char *id = sk_OPENSSL_CSTRING_value(engines, i);
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| 385 | if ((e = ENGINE_by_id(id)) != NULL) {
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| 386 | const char *name = ENGINE_get_name(e);
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| 387 | /*
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| 388 | * Do "id" first, then "name". Easier to auto-parse.
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| 389 | */
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| 390 | BIO_printf(out, "(%s) %s\n", id, name);
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| 391 | util_do_cmds(e, pre_cmds, out, indent);
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| 392 | if (strcmp(ENGINE_get_id(e), id) != 0) {
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| 393 | BIO_printf(out, "Loaded: (%s) %s\n",
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| 394 | ENGINE_get_id(e), ENGINE_get_name(e));
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| 395 | }
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| 396 | if (list_cap) {
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| 397 | int cap_size = 256;
|
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| 398 | char *cap_buf = NULL;
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| 399 | int k, n;
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| 400 | const int *nids;
|
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| 401 | ENGINE_CIPHERS_PTR fn_c;
|
|---|
| 402 | ENGINE_DIGESTS_PTR fn_d;
|
|---|
| 403 | ENGINE_PKEY_METHS_PTR fn_pk;
|
|---|
| 404 |
|
|---|
| 405 | if (ENGINE_get_RSA(e) != NULL
|
|---|
| 406 | && !append_buf(&cap_buf, &cap_size, "RSA"))
|
|---|
| 407 | goto end;
|
|---|
| 408 | if (ENGINE_get_DSA(e) != NULL
|
|---|
| 409 | && !append_buf(&cap_buf, &cap_size, "DSA"))
|
|---|
| 410 | goto end;
|
|---|
| 411 | if (ENGINE_get_DH(e) != NULL
|
|---|
| 412 | && !append_buf(&cap_buf, &cap_size, "DH"))
|
|---|
| 413 | goto end;
|
|---|
| 414 | if (ENGINE_get_RAND(e) != NULL
|
|---|
| 415 | && !append_buf(&cap_buf, &cap_size, "RAND"))
|
|---|
| 416 | goto end;
|
|---|
| 417 |
|
|---|
| 418 | fn_c = ENGINE_get_ciphers(e);
|
|---|
| 419 | if (fn_c == NULL)
|
|---|
| 420 | goto skip_ciphers;
|
|---|
| 421 | n = fn_c(e, NULL, &nids, 0);
|
|---|
| 422 | for (k = 0; k < n; ++k)
|
|---|
| 423 | if (!append_buf(&cap_buf, &cap_size, OBJ_nid2sn(nids[k])))
|
|---|
| 424 | goto end;
|
|---|
| 425 |
|
|---|
| 426 | skip_ciphers:
|
|---|
| 427 | fn_d = ENGINE_get_digests(e);
|
|---|
| 428 | if (fn_d == NULL)
|
|---|
| 429 | goto skip_digests;
|
|---|
| 430 | n = fn_d(e, NULL, &nids, 0);
|
|---|
| 431 | for (k = 0; k < n; ++k)
|
|---|
| 432 | if (!append_buf(&cap_buf, &cap_size, OBJ_nid2sn(nids[k])))
|
|---|
| 433 | goto end;
|
|---|
| 434 |
|
|---|
| 435 | skip_digests:
|
|---|
| 436 | fn_pk = ENGINE_get_pkey_meths(e);
|
|---|
| 437 | if (fn_pk == NULL)
|
|---|
| 438 | goto skip_pmeths;
|
|---|
| 439 | n = fn_pk(e, NULL, &nids, 0);
|
|---|
| 440 | for (k = 0; k < n; ++k)
|
|---|
| 441 | if (!append_buf(&cap_buf, &cap_size, OBJ_nid2sn(nids[k])))
|
|---|
| 442 | goto end;
|
|---|
| 443 | skip_pmeths:
|
|---|
| 444 | {
|
|---|
| 445 | struct util_store_cap_data store_ctx;
|
|---|
| 446 |
|
|---|
| 447 | store_ctx.engine = e;
|
|---|
| 448 | store_ctx.cap_buf = &cap_buf;
|
|---|
| 449 | store_ctx.cap_size = &cap_size;
|
|---|
| 450 | store_ctx.ok = 1;
|
|---|
| 451 |
|
|---|
| 452 | OSSL_STORE_do_all_loaders(util_store_cap, &store_ctx);
|
|---|
| 453 | if (!store_ctx.ok)
|
|---|
| 454 | goto end;
|
|---|
| 455 | }
|
|---|
| 456 | if (cap_buf != NULL && (*cap_buf != '\0'))
|
|---|
| 457 | BIO_printf(out, " [%s]\n", cap_buf);
|
|---|
| 458 |
|
|---|
| 459 | OPENSSL_free(cap_buf);
|
|---|
| 460 | }
|
|---|
| 461 | if (test_avail) {
|
|---|
| 462 | BIO_printf(out, "%s", indent);
|
|---|
| 463 | if (ENGINE_init(e)) {
|
|---|
| 464 | BIO_printf(out, "[ available ]\n");
|
|---|
| 465 | util_do_cmds(e, post_cmds, out, indent);
|
|---|
| 466 | ENGINE_finish(e);
|
|---|
| 467 | } else {
|
|---|
| 468 | BIO_printf(out, "[ unavailable ]\n");
|
|---|
| 469 | if (test_avail_noise)
|
|---|
| 470 | ERR_print_errors_fp(stdout);
|
|---|
| 471 | ERR_clear_error();
|
|---|
| 472 | }
|
|---|
| 473 | }
|
|---|
| 474 | if ((verbose > 0) && !util_verbose(e, verbose, out, indent))
|
|---|
| 475 | goto end;
|
|---|
| 476 | ENGINE_free(e);
|
|---|
| 477 | } else {
|
|---|
| 478 | ERR_print_errors(bio_err);
|
|---|
| 479 | /* because exit codes above 127 have special meaning on Unix */
|
|---|
| 480 | if (++ret > 127)
|
|---|
| 481 | ret = 127;
|
|---|
| 482 | }
|
|---|
| 483 | }
|
|---|
| 484 |
|
|---|
| 485 | end:
|
|---|
| 486 |
|
|---|
| 487 | ERR_print_errors(bio_err);
|
|---|
| 488 | sk_OPENSSL_CSTRING_free(engines);
|
|---|
| 489 | sk_OPENSSL_STRING_free(pre_cmds);
|
|---|
| 490 | sk_OPENSSL_STRING_free(post_cmds);
|
|---|
| 491 | BIO_free_all(out);
|
|---|
| 492 | return ret;
|
|---|
| 493 | }
|
|---|
