0afa8e065e
git-subtree-dir: contrib/libfido2 git-subtree-mainline:d586c978b9git-subtree-split:a58dee945a
294 lines
6.3 KiB
C
294 lines
6.3 KiB
C
/*
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* Copyright (c) 2018 Yubico AB. All rights reserved.
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* Use of this source code is governed by a BSD-style
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* license that can be found in the LICENSE file.
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*/
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#include <fido.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../openbsd-compat/openbsd-compat.h"
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/*
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* Pretty-print a device's capabilities flags and return the result.
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*/
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static void
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format_flags(char *ret, size_t retlen, uint8_t flags)
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{
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memset(ret, 0, retlen);
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if (flags & FIDO_CAP_WINK) {
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if (strlcat(ret, "wink,", retlen) >= retlen)
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goto toolong;
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} else {
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if (strlcat(ret, "nowink,", retlen) >= retlen)
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goto toolong;
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}
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if (flags & FIDO_CAP_CBOR) {
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if (strlcat(ret, " cbor,", retlen) >= retlen)
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goto toolong;
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} else {
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if (strlcat(ret, " nocbor,", retlen) >= retlen)
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goto toolong;
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}
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if (flags & FIDO_CAP_NMSG) {
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if (strlcat(ret, " nomsg", retlen) >= retlen)
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goto toolong;
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} else {
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if (strlcat(ret, " msg", retlen) >= retlen)
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goto toolong;
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}
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return;
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toolong:
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strlcpy(ret, "toolong", retlen);
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}
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/*
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* Print a FIDO device's attributes on stdout.
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*/
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static void
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print_attr(const fido_dev_t *dev)
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{
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char flags_txt[128];
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printf("proto: 0x%02x\n", fido_dev_protocol(dev));
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printf("major: 0x%02x\n", fido_dev_major(dev));
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printf("minor: 0x%02x\n", fido_dev_minor(dev));
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printf("build: 0x%02x\n", fido_dev_build(dev));
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format_flags(flags_txt, sizeof(flags_txt), fido_dev_flags(dev));
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printf("caps: 0x%02x (%s)\n", fido_dev_flags(dev), flags_txt);
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}
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/*
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* Auxiliary function to print an array of strings on stdout.
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*/
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static void
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print_str_array(const char *label, char * const *sa, size_t len)
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{
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if (len == 0)
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return;
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printf("%s strings: ", label);
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for (size_t i = 0; i < len; i++)
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printf("%s%s", i > 0 ? ", " : "", sa[i]);
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printf("\n");
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}
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/*
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* Auxiliary function to print (char *, bool) pairs on stdout.
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*/
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static void
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print_opt_array(const char *label, char * const *name, const bool *value,
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size_t len)
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{
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if (len == 0)
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return;
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printf("%s: ", label);
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for (size_t i = 0; i < len; i++)
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printf("%s%s%s", i > 0 ? ", " : "",
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value[i] ? "" : "no", name[i]);
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printf("\n");
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}
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/*
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* Auxiliary function to print a list of supported COSE algorithms on stdout.
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*/
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static void
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print_algorithms(const fido_cbor_info_t *ci)
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{
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const char *cose, *type;
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size_t len;
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if ((len = fido_cbor_info_algorithm_count(ci)) == 0)
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return;
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printf("algorithms: ");
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for (size_t i = 0; i < len; i++) {
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cose = type = "unknown";
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switch (fido_cbor_info_algorithm_cose(ci, i)) {
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case COSE_EDDSA:
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cose = "eddsa";
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break;
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case COSE_ES256:
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cose = "es256";
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break;
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case COSE_RS256:
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cose = "rs256";
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break;
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}
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if (fido_cbor_info_algorithm_type(ci, i) != NULL)
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type = fido_cbor_info_algorithm_type(ci, i);
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printf("%s%s (%s)", i > 0 ? ", " : "", cose, type);
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}
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printf("\n");
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}
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/*
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* Auxiliary function to print an authenticator's AAGUID on stdout.
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*/
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static void
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print_aaguid(const unsigned char *buf, size_t buflen)
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{
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printf("aaguid: ");
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while (buflen--)
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printf("%02x", *buf++);
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printf("\n");
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}
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/*
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* Auxiliary function to print an authenticator's maximum message size on
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* stdout.
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*/
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static void
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print_maxmsgsiz(uint64_t maxmsgsiz)
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{
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printf("maxmsgsiz: %d\n", (int)maxmsgsiz);
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}
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/*
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* Auxiliary function to print an authenticator's maximum number of credentials
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* in a credential list on stdout.
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*/
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static void
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print_maxcredcntlst(uint64_t maxcredcntlst)
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{
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printf("maxcredcntlst: %d\n", (int)maxcredcntlst);
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}
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/*
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* Auxiliary function to print an authenticator's maximum credential ID length
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* on stdout.
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*/
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static void
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print_maxcredidlen(uint64_t maxcredidlen)
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{
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printf("maxcredlen: %d\n", (int)maxcredidlen);
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}
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/*
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* Auxiliary function to print an authenticator's firmware version on stdout.
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*/
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static void
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print_fwversion(uint64_t fwversion)
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{
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printf("fwversion: 0x%x\n", (int)fwversion);
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}
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/*
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* Auxiliary function to print an array of bytes on stdout.
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*/
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static void
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print_byte_array(const char *label, const uint8_t *ba, size_t len)
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{
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if (len == 0)
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return;
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printf("%s: ", label);
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for (size_t i = 0; i < len; i++)
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printf("%s%u", i > 0 ? ", " : "", (unsigned)ba[i]);
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printf("\n");
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}
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static void
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getinfo(const char *path)
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{
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fido_dev_t *dev;
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fido_cbor_info_t *ci;
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int r;
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fido_init(0);
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if ((dev = fido_dev_new()) == NULL)
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errx(1, "fido_dev_new");
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if ((r = fido_dev_open(dev, path)) != FIDO_OK)
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errx(1, "fido_dev_open: %s (0x%x)", fido_strerr(r), r);
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print_attr(dev);
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if (fido_dev_is_fido2(dev) == false)
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goto end;
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if ((ci = fido_cbor_info_new()) == NULL)
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errx(1, "fido_cbor_info_new");
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if ((r = fido_dev_get_cbor_info(dev, ci)) != FIDO_OK)
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errx(1, "fido_dev_get_cbor_info: %s (0x%x)", fido_strerr(r), r);
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/* print supported protocol versions */
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print_str_array("version", fido_cbor_info_versions_ptr(ci),
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fido_cbor_info_versions_len(ci));
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/* print supported extensions */
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print_str_array("extension", fido_cbor_info_extensions_ptr(ci),
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fido_cbor_info_extensions_len(ci));
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/* print supported transports */
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print_str_array("transport", fido_cbor_info_transports_ptr(ci),
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fido_cbor_info_transports_len(ci));
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/* print supported algorithms */
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print_algorithms(ci);
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/* print aaguid */
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print_aaguid(fido_cbor_info_aaguid_ptr(ci),
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fido_cbor_info_aaguid_len(ci));
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/* print supported options */
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print_opt_array("options", fido_cbor_info_options_name_ptr(ci),
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fido_cbor_info_options_value_ptr(ci),
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fido_cbor_info_options_len(ci));
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/* print maximum message size */
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print_maxmsgsiz(fido_cbor_info_maxmsgsiz(ci));
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/* print maximum number of credentials allowed in credential lists */
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print_maxcredcntlst(fido_cbor_info_maxcredcntlst(ci));
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/* print maximum length of a credential ID */
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print_maxcredidlen(fido_cbor_info_maxcredidlen(ci));
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/* print firmware version */
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print_fwversion(fido_cbor_info_fwversion(ci));
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/* print supported pin protocols */
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print_byte_array("pin protocols", fido_cbor_info_protocols_ptr(ci),
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fido_cbor_info_protocols_len(ci));
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fido_cbor_info_free(&ci);
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end:
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if ((r = fido_dev_close(dev)) != FIDO_OK)
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errx(1, "fido_dev_close: %s (0x%x)", fido_strerr(r), r);
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fido_dev_free(&dev);
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}
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int
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main(int argc, char **argv)
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{
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if (argc != 2) {
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fprintf(stderr, "usage: info <device>\n");
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exit(EXIT_FAILURE);
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}
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getinfo(argv[1]);
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exit(0);
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}
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