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Diffstat (limited to 'bin/tests/entropy2_test.c')
| -rw-r--r-- | bin/tests/entropy2_test.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/bin/tests/entropy2_test.c b/bin/tests/entropy2_test.c new file mode 100644 index 0000000..3561a4c --- /dev/null +++ b/bin/tests/entropy2_test.c @@ -0,0 +1,175 @@ +/* + * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2000, 2001 Internet Software Consortium. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +/* $Id: entropy2_test.c,v 1.16 2007/06/19 23:46:59 tbox Exp $ */ + +/*! \file */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> + +#include <isc/entropy.h> +#include <isc/keyboard.h> +#include <isc/mem.h> +#include <isc/string.h> +#include <isc/time.h> +#include <isc/util.h> + +static void +hex_dump(const char *msg, void *data, unsigned int length) { + unsigned int len; + unsigned char *base; + isc_boolean_t first = ISC_TRUE; + + base = data; + + printf("DUMP of %d bytes: %s\n\t", length, msg); + for (len = 0; len < length; len++) { + if (len % 16 == 0 && !first) + printf("\n\t"); + printf("%02x ", base[len]); + first = ISC_FALSE; + } + printf("\n"); +} + +static void +CHECK(const char *msg, isc_result_t result) { + if (result != ISC_R_SUCCESS) { + printf("FAILURE: %s: %s\n", msg, isc_result_totext(result)); + exit(1); + } +} + +static isc_result_t +start(isc_entropysource_t *source, void *arg, isc_boolean_t blocking) { + isc_keyboard_t *kbd = (isc_keyboard_t *)arg; + + UNUSED(source); + + if (blocking) + printf("start called, blocking mode.\n"); + else + printf("start called, non-blocking mode.\n"); + + return (isc_keyboard_open(kbd)); +} + +static void +stop(isc_entropysource_t *source, void *arg) { + isc_keyboard_t *kbd = (isc_keyboard_t *)arg; + + UNUSED(source); + + printf("ENOUGH! Stop typing, please.\r\n"); + + (void)isc_keyboard_close(kbd, 3); + printf("stop called\n"); +} + +static isc_result_t +get(isc_entropysource_t *source, void *arg, isc_boolean_t blocking) { + isc_keyboard_t *kbd = (isc_keyboard_t *)arg; + isc_result_t result; + isc_time_t t; + isc_uint32_t sample; + isc_uint32_t extra; + unsigned char c; + + if (!blocking) + return (ISC_R_NOENTROPY); + + result = isc_keyboard_getchar(kbd, &c); + if (result != ISC_R_SUCCESS) + return (result); + + TIME_NOW(&t); + + sample = isc_time_nanoseconds(&t); + extra = c; + + result = isc_entropy_addcallbacksample(source, sample, extra); + if (result != ISC_R_SUCCESS) { + printf("\r\n"); + return (result); + } + + printf("."); + fflush(stdout); + + return (result); +} + +int +main(int argc, char **argv) { + isc_mem_t *mctx; + unsigned char buffer[512]; + isc_entropy_t *ent; + isc_entropysource_t *source; + unsigned int returned; + unsigned int flags; + isc_result_t result; + isc_keyboard_t kbd; + + UNUSED(argc); + UNUSED(argv); + + mctx = NULL; + CHECK("isc_mem_create()", + isc_mem_create(0, 0, &mctx)); + + ent = NULL; + CHECK("isc_entropy_create()", + isc_entropy_create(mctx, &ent)); + + isc_entropy_stats(ent, stderr); + + source = NULL; + result = isc_entropy_createcallbacksource(ent, start, get, stop, &kbd, + &source); + CHECK("isc_entropy_createcallbacksource()", result); + + fprintf(stderr, + "Reading 32 bytes of GOOD random data only, partial OK\n"); + + flags = 0; + flags |= ISC_ENTROPY_GOODONLY; + flags |= ISC_ENTROPY_PARTIAL; + flags |= ISC_ENTROPY_BLOCKING; + returned = 0; + result = isc_entropy_getdata(ent, buffer, 32, &returned, flags); + if (result == ISC_R_NOENTROPY) { + fprintf(stderr, "No entropy.\r\n"); + } + + isc_entropy_stopcallbacksources(ent); + + hex_dump("good data only:", buffer, returned); + + isc_entropy_stats(ent, stderr); + + isc_entropy_destroysource(&source); + isc_entropy_detach(&ent); + + isc_mem_stats(mctx, stderr); + isc_mem_destroy(&mctx); + + return (0); +} + |