Add rehash command to openssl (8f6f1441) · Commits · CYBER - Cyber Security / TS 103 523 MSP / ETS / ETS OpenSSL

Makefile.org

+1 −1

Original line number	Diff line number	Diff line
		@@ -428,7 +428,7 @@ rehash.time: certs apps
		[ -x "apps/openssl.exe" ] && OPENSSL="apps/openssl.exe" \|\| :; \
		OPENSSL_DEBUG_MEMORY=on; OPENSSL_CONF=/dev/null ; \
		export OPENSSL OPENSSL_DEBUG_MEMORY OPENSSL_CONF; \
		$(PERL) tools/c_rehash certs/demo) && \
		openssl rehash certs/demo) && \
		touch rehash.time; \
		else :; fi

apps/Makefile

+7 −16

Original line number	Diff line number	Diff line
		@@ -5,7 +5,7 @@
		DIR= apps
		TOP= ..
		CC= cc
		INCLUDES= -I$(TOP) -I../include
		INCLUDES= -I$(TOP) -I../crypto -I../include
		CFLAG= -g -static -Wswitch
		MAKEFILE= Makefile
		PERL= perl
		@@ -35,23 +35,14 @@ COMMANDS= \
		genpkey.o genrsa.o nseq.o ocsp.o passwd.o pkcs12.o pkcs7.o pkcs8.o \
		pkey.o pkeyparam.o pkeyutl.o prime.o rand.o req.o rsa.o rsautl.o \
		s_client.o s_server.o s_time.o sess_id.o smime.o speed.o spkac.o \
		srp.o ts.o verify.o version.o x509.o
		srp.o ts.o verify.o version.o x509.o rehash.o

		A_OBJ=apps.o opt.o
		A_SRC=apps.c opt.c
		S_OBJ= s_cb.o s_socket.o
		S_SRC= s_cb.c s_socket.c
		EXTRA_OBJ=apps.o opt.o s_cb.o s_socket.o
		EXTRA_SRC=apps.c opt.c s_cb.c s_socket.c
		RAND_OBJ=app_rand.o
		RAND_SRC=app_rand.c

		OBJ = \
		asn1pars.o ca.o ciphers.o cms.o crl.o crl2p7.o dgst.o dhparam.o \
		dsa.o dsaparam.o ec.o ecparam.o enc.o engine.o errstr.o gendsa.o \
		genpkey.o genrsa.o nseq.o ocsp.o passwd.o pkcs12.o pkcs7.o pkcs8.o \
		pkey.o pkeyparam.o pkeyutl.o prime.o rand.o req.o rsa.o rsautl.o \
		s_client.o s_server.o s_time.o sess_id.o smime.o speed.o spkac.o \
		srp.o ts.o verify.o version.o x509.o

		OBJ = $(COMMANDS)

		SRC = \
		asn1pars.c ca.c ciphers.c cms.c crl.c crl2p7.c dgst.c dhparam.c \
		@@ -61,8 +52,8 @@ SRC = \
		s_client.c s_server.c s_time.c sess_id.c smime.c speed.c spkac.c \
		srp.c ts.c verify.c version.c x509.c

		EXE_OBJ = openssl.o $(OBJ) $(A_OBJ) $(S_OBJ) $(RAND_OBJ)
		EXE_SRC = openssl.c $(SRC) $(A_SRC) $(S_SRC) $(RAND_SRC)
		EXE_OBJ = openssl.o $(OBJ) $(EXTRA_OBJ) $(RAND_OBJ)
		EXE_SRC = openssl.c $(SRC) $(EXTRA_SRC) $(RAND_SRC)

		HEADER= apps.h progs.h s_apps.h \
		testdsa.h testrsa.h timeouts.h

apps/progs.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -60,6 +60,7 @@ extern int ts_main(int argc, char *argv[]);
		extern int verify_main(int argc, char *argv[]);
		extern int version_main(int argc, char *argv[]);
		extern int x509_main(int argc, char *argv[]);
		extern int rehash_main(int argc, char *argv[]);
		extern int list_main(int argc, char *argv[]);
		extern int help_main(int argc, char *argv[]);
		extern int exit_main(int argc, char *argv[]);
		@@ -109,6 +110,7 @@ extern OPTIONS ts_options[];
		extern OPTIONS verify_options[];
		extern OPTIONS version_options[];
		extern OPTIONS x509_options[];
		extern OPTIONS rehash_options[];
		extern OPTIONS list_options[];
		extern OPTIONS help_options[];
		extern OPTIONS exit_options[];
		@@ -193,6 +195,7 @@ FUNCTION functions[] = {
		{ FT_general, "verify", verify_main, verify_options },
		{ FT_general, "version", version_main, version_options },
		{ FT_general, "x509", x509_main, x509_options },
		{ FT_general, "rehash", rehash_main, rehash_options },
		{ FT_general, "list", list_main, list_options },
		{ FT_general, "help", help_main, help_options },
		{ FT_general, "exit", exit_main, exit_options },

apps/rehash.c

0 → 100644

+451 −0

Original line number	Diff line number	Diff line
		/*
		* C implementation based on the original Perl and shell versions
		*
		* Copyright (c) 2013-2014 Timo Teräs <timo.teras@iki.fi>
		* All rights reserved.
		*/
		/* ====================================================================
		* Copyright (c) 2015 The OpenSSL Project. All rights reserved.
		*
		* Redistribution and use in source and binary forms, with or without
		* modification, are permitted provided that the following conditions
		* are met:
		*
		* 1. Redistributions of source code must retain the above copyright
		* notice, this list of conditions and the following disclaimer.
		*
		* 2. Redistributions in binary form must reproduce the above copyright
		* notice, this list of conditions and the following disclaimer in
		* the documentation and/or other materials provided with the
		* distribution.
		*
		* 3. All advertising materials mentioning features or use of this
		* software must display the following acknowledgment:
		* "This product includes software developed by the OpenSSL Project
		* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
		*
		* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
		* endorse or promote products derived from this software without
		* prior written permission. For written permission, please contact
		* licensing@OpenSSL.org.
		*
		* 5. Products derived from this software may not be called "OpenSSL"
		* nor may "OpenSSL" appear in their names without prior written
		* permission of the OpenSSL Project.
		*
		* 6. Redistributions of any form whatsoever must retain the following
		* acknowledgment:
		* "This product includes software developed by the OpenSSL Project
		* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
		*
		* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
		* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
		* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
		* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
		* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
		* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
		* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
		* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		* OF THE POSSIBILITY OF SUCH DAMAGE.
		* ====================================================================
		*
		* This product includes cryptographic software written by Eric Young
		* (eay@cryptsoft.com). This product includes software written by Tim
		* Hudson (tjh@cryptsoft.com).
		*
		*/

		#include "apps.h"

		#ifdef unix
		# include <unistd.h>
		# include <stdio.h>
		# include <limits.h>
		# include <errno.h>
		# include <string.h>
		# include <ctype.h>
		# include <sys/stat.h>

		# include "internal/o_dir.h"
		# include <openssl/evp.h>
		# include <openssl/pem.h>
		# include <openssl/x509.h>


		# define MAX_COLLISIONS 256

		typedef struct hentry_st {
		struct hentry_st *next;
		char *filename;
		unsigned short old_id;
		unsigned char need_symlink;
		unsigned char digest[EVP_MAX_MD_SIZE];
		} HENTRY;

		typedef struct bucket_st {
		struct bucket_st *next;
		HENTRY first_entry, last_entry;
		unsigned int hash;
		unsigned short type;
		unsigned short num_needed;
		} BUCKET;

		enum Type {
		/* Keep in sync with \|suffixes\|, below. */
		TYPE_CERT=0, TYPE_CRL=1
		};

		enum Hash {
		HASH_OLD, HASH_NEW, HASH_BOTH
		};


		static int evpmdsize;
		static const EVP_MD *evpmd;
		static int remove_links = 1;
		static int verbose = 0;
		static BUCKET *hash_table[257];

		static const char *suffixes[] = { "", "r" };
		static const char *extensions[] = { "pem", "crt", "cer", "crl" };


		static void bit_set(unsigned char *set, unsigned int bit)
		{
		set[bit >> 3] \|= 1 << (bit & 0x7);
		}

		static int bit_isset(unsigned char *set, unsigned int bit)
		{
		return set[bit >> 3] & (1 << (bit & 0x7));
		}


		static void add_entry(enum Type type, unsigned int hash, const char *filename,
		const unsigned char *digest, int need_symlink,
		unsigned short old_id)
		{
		static BUCKET nilbucket;
		static HENTRY nilhentry;
		BUCKET *bp;
		HENTRY ep, found = NULL;
		unsigned int ndx = (type + hash) % OSSL_NELEM(hash_table);

		for (bp = hash_table[ndx]; bp; bp = bp->next)
		if (bp->type == type && bp->hash == hash)
		break;
		if (bp == NULL) {
		bp = app_malloc(sizeof(*bp), "hash bucket");
		*bp = nilbucket;
		bp->next = hash_table[ndx];
		bp->type = type;
		bp->hash = hash;
		hash_table[ndx] = bp;
		}

		for (ep = bp->first_entry; ep; ep = ep->next) {
		if (digest && memcmp(digest, ep->digest, evpmdsize) == 0) {
		BIO_printf(bio_err,
		"%s: skipping duplicate certificate in %s\n",
		opt_getprog(), filename);
		return;
		}
		if (strcmp(filename, ep->filename) == 0) {
		found = ep;
		if (digest == NULL)
		break;
		}
		}
		ep = found;
		if (ep == NULL) {
		if (bp->num_needed >= MAX_COLLISIONS)
		return;
		ep = app_malloc(sizeof(*ep), "collision bucket");
		*ep = nilhentry;
		ep->old_id = ~0;
		ep->filename = BUF_strdup(filename);
		if (bp->last_entry)
		bp->last_entry->next = ep;
		if (bp->first_entry == NULL)
		bp->first_entry = ep;
		bp->last_entry = ep;
		}

		if (old_id < ep->old_id)
		ep->old_id = old_id;
		if (need_symlink && !ep->need_symlink) {
		ep->need_symlink = 1;
		bp->num_needed++;
		memcpy(ep->digest, digest, evpmdsize);
		}
		}

		static int handle_symlink(const char filename, const char fullpath)
		{
		unsigned int hash = 0;
		int i, type, id;
		unsigned char ch;
		char linktarget[NAME_MAX], *endptr;
		ssize_t n;

		for (i = 0; i < 8; i++) {
		ch = filename[i];
		if (!isxdigit(ch))
		return -1;
		hash <<= 4;
		hash += app_hex(ch);
		}
		if (filename[i++] != '.')
		return -1;
		for (type = OSSL_NELEM(suffixes) - 1; type > 0; type--)
		if (strcasecmp(suffixes[type], &filename[i]) == 0)
		break;
		i += strlen(suffixes[type]);

		id = strtoul(&filename[i], &endptr, 10);
		if (*endptr != '\0')
		return -1;

		n = readlink(fullpath, linktarget, sizeof(linktarget));
		if (n < 0 \|\| n >= (int)sizeof(linktarget))
		return -1;
		linktarget[n] = 0;

		add_entry(type, hash, linktarget, NULL, 0, id);
		return 0;
		}

		static int do_file(const char filename, const char fullpath, enum Hash h)
		{
		STACK_OF (X509_INFO) *inf;
		X509_INFO *x;
		X509_NAME *name = NULL;
		BIO *b;
		const char *ext;
		unsigned char digest[EVP_MAX_MD_SIZE];
		int i, type, ret = -1;

		if ((ext = strrchr(filename, '.')) == NULL)
		return 0;
		for (i = 0; i < (int)OSSL_NELEM(extensions); i++) {
		if (strcasecmp(extensions[i], ext + 1) == 0)
		break;
		}
		if (i >= (int)OSSL_NELEM(extensions))
		return -1;

		if ((b = BIO_new_file(fullpath, "r")) == NULL)
		return -1;
		inf = PEM_X509_INFO_read_bio(b, NULL, NULL, NULL);
		BIO_free(b);
		if (inf == NULL)
		return -1;

		if (sk_X509_INFO_num(inf) != 1) {
		BIO_printf(bio_err,
		"%s: skipping %s,"
		"it does not contain exactly one certificate or CRL\n",
		opt_getprog(), filename);
		goto end;
		}
		x = sk_X509_INFO_value(inf, 0);
		if (x->x509) {
		type = TYPE_CERT;
		name = X509_get_subject_name(x->x509);
		X509_digest(x->x509, evpmd, digest, NULL);
		} else if (x->crl) {
		type = TYPE_CRL;
		name = X509_CRL_get_issuer(x->crl);
		X509_CRL_digest(x->crl, evpmd, digest, NULL);
		}
		if (name) {
		if ((h == HASH_NEW) \|\| (h == HASH_BOTH))
		add_entry(type, X509_NAME_hash(name), filename, digest, 1, ~0);
		if ((h == HASH_OLD) \|\| (h == HASH_BOTH))
		add_entry(type, X509_NAME_hash_old(name), filename, digest, 1, ~0);
		}

		end:
		sk_X509_INFO_pop_free(inf, X509_INFO_free);
		return ret;
		}

		static int do_dir(const char *dirname, enum Hash h)
		{
		BUCKET bp, nextbp;
		HENTRY ep, nextep;
		OPENSSL_DIR_CTX *d = NULL;
		struct stat st;
		unsigned char idmask[MAX_COLLISIONS / 8];
		int i, n, nextid, buflen, ret = -1;
		const char *pathsep;
		const char *filename;
		char *buf;

		buflen = strlen(dirname);
		pathsep = (buflen && dirname[buflen - 1] == '/') ? "" : "/";
		buflen += NAME_MAX + 2;
		buf = app_malloc(buflen, "filename buffer");

		if (verbose)
		BIO_printf(bio_out, "Doing %s\n", dirname);

		while ((filename = OPENSSL_DIR_read(&d, dirname)) != NULL) {
		if (snprintf(buf, buflen, "%s%s%s",
		dirname, pathsep, filename) >= buflen)
		continue;
		if (lstat(buf, &st) < 0)
		continue;
		if (S_ISLNK(st.st_mode) && handle_symlink(filename, buf) == 0)
		continue;
		do_file(filename, buf, h);
		}
		OPENSSL_DIR_end(&d);

		for (i = 0; i < (int)OSSL_NELEM(hash_table); i++) {
		for (bp = hash_table[i]; bp; bp = nextbp) {
		nextbp = bp->next;
		nextid = 0;
		memset(idmask, 0, (bp->num_needed + 7) / 8);
		for (ep = bp->first_entry; ep; ep = ep->next)
		if (ep->old_id < bp->num_needed)
		bit_set(idmask, ep->old_id);

		for (ep = bp->first_entry; ep; ep = nextep) {
		nextep = ep->next;
		if (ep->old_id < bp->num_needed) {
		/* Link exists, and is used as-is */
		snprintf(buf, buflen, "%08x.%s%d", bp->hash,
		suffixes[bp->type], ep->old_id);
		if (verbose)
		BIO_printf(bio_out, "link %s -> %s\n",
		ep->filename, buf);
		} else if (ep->need_symlink) {
		/* New link needed (it may replace something) */
		while (bit_isset(idmask, nextid))
		nextid++;

		snprintf(buf, buflen, "%s%s%n%08x.%s%d",
		dirname, pathsep, &n, bp->hash,
		suffixes[bp->type], nextid);
		if (verbose)
		BIO_printf(bio_out, "link %s -> %s\n",
		ep->filename, &buf[n]);
		if (unlink(buf) < 0 && errno != ENOENT)
		BIO_printf(bio_err,
		"%s: Can't unlink %s, %s\n",
		opt_getprog(), buf, strerror(errno));
		if (symlink(ep->filename, buf) < 0)
		BIO_printf(bio_err,
		"%s: Can't symlink %s, %s\n",
		opt_getprog(), ep->filename,
		strerror(errno));
		} else if (remove_links) {
		/* Link to be deleted */
		snprintf(buf, buflen, "%s%s%n%08x.%s%d",
		dirname, pathsep, &n, bp->hash,
		suffixes[bp->type], ep->old_id);
		if (verbose)
		BIO_printf(bio_out, "unlink %s\n",
		&buf[n]);
		if (unlink(buf) < 0 && errno != ENOENT)
		BIO_printf(bio_err,
		"%s: Can't unlink %s, %s\n",
		opt_getprog(), buf, strerror(errno));
		}
		OPENSSL_free(ep->filename);
		OPENSSL_free(ep);
		}
		OPENSSL_free(bp);
		}
		hash_table[i] = NULL;
		}
		ret = 0;

		OPENSSL_free(buf);
		return ret;
		}

		typedef enum OPTION_choice {
		OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
		OPT_COMPAT, OPT_OLD, OPT_N, OPT_VERBOSE
		} OPTION_CHOICE;

		OPTIONS rehash_options[] = {
		{OPT_HELP_STR, 1, '-', "Usage: %s [options] [cert-directory...]\n"},
		{OPT_HELP_STR, 1, '-', "Valid options are:\n"},
		{"help", OPT_HELP, '-', "Display this summary"},
		{"compat", OPT_COMPAT, '-', "Create both new- and old-style hash links"},
		{"old", OPT_OLD, '-', "Use old-style hash to generate links"},
		{"n", OPT_N, '-', "Do not remove existing links"},
		{"v", OPT_VERBOSE, '-', "Verbose output"},
		{NULL}
		};


		int rehash_main(int argc, char **argv)
		{
		const char env, prog;
		char e, m;
		int ret = 0;
		OPTION_CHOICE o;
		enum Hash h = HASH_NEW;

		prog = opt_init(argc, argv, rehash_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(rehash_options);
		goto end;
		case OPT_COMPAT:
		h = HASH_BOTH;
		break;
		case OPT_OLD:
		h = HASH_OLD;
		break;
		case OPT_N:
		remove_links = 0;
		break;
		case OPT_VERBOSE:
		verbose = 1;
		break;
		}
		}
		argc = opt_num_rest();
		argv = opt_rest();

		evpmd = EVP_sha1();
		evpmdsize = EVP_MD_size(evpmd);

		if (*argv) {
		while (*argv)
		ret \|= do_dir(*argv++, h);
		} else if ((env = getenv("SSL_CERT_DIR")) != NULL) {
		m = BUF_strdup(env);
		for (e = strtok(m, ":"); e != NULL; e = strtok(NULL, ":"))
		ret \|= do_dir(e, h);
		OPENSSL_free(m);
		} else {
		ret \|= do_dir("/etc/ssl/certs", h);
		}

		end:
		return ret ? 2 : 0;
		}

		#else

		int rehash_main(int argc, char **argv)
		{
		BIO_print(bio_err, "Not available; use c_rehash script\n");
		return (1);
		}

		#endif

doc/apps/c_rehash.pod→doc/apps/rehash.pod

+12 −5

Original line number	Diff line number	Diff line
		@@ -5,20 +5,27 @@ Original text by James Westby, contributed under the OpenSSL license.

		=head1 NAME

		c_rehash - Create symbolic links to files named by the hash values
		c_rehash, rehash - Create symbolic links to files named by the hash values

		=head1 SYNOPSIS

		B<c_rehash>
		B<openssl>
		B<rehash>
		B<[-old]>
		B<[-h]>
		B<[-n]>
		B<[-v]>
		[ I<directory>...]

		B<c_rehash>
		I<flags...>

		=head1 DESCRIPTION

		B<c_rehash> scans directories and calculates a hash value of each
		On some platforms, the OpenSSL B<rehash> command is available as
		an external script called B<c_rehash>. They are functionally equivalent.

		B<rehash> scans directories and calculates a hash value of each
		C<.pem>, C<.crt>, C<.cer>, or C<.crl>
		file in the specified directory list and creates symbolic links
		for each file, where the name of the link is the hash value.
		@@ -37,7 +44,7 @@ In order for a directory to be processed, the user must have write
		permissions on that directory, otherwise it will be skipped.
		The links created are of the form C<HHHHHHHH.D>, where each B<H>
		is a hexadecimal character and B<D> is a single decimal digit.
		When processing a directory, B<c_rehash> will first remove all links
		When processing a directory, B<rehash> will first remove all links
		that have a name in that syntax. If you have links in that format
		used for other purposes, they will be removed.
		To skip the removal step, use the B<-n> flag.
		@@ -87,7 +94,7 @@ This is needed when keeping new and old-style links in the same directory.
		=item B<-v>

		Print messages about old links removed and new links created.
		By default, B<c_rehash> only lists each directory as it is processed.
		By default, B<rehash> only lists each directory as it is processed.

		=back

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