mirror of
https://github.com/openssl/openssl.git
synced 2024-12-03 05:41:46 +08:00
7644a9aef8
Rename BUF_{strdup,strlcat,strlcpy,memdup,strndup,strnlen} to OPENSSL_{strdup,strlcat,strlcpy,memdup,strndup,strnlen} Add #define's for the old names. Add CRYPTO_{memdup,strndup}, called by OPENSSL_{memdup,strndup} macros. Reviewed-by: Tim Hudson <tjh@openssl.org>
495 lines
15 KiB
C
495 lines
15 KiB
C
/*
|
|
* C implementation based on the original Perl and shell versions
|
|
*
|
|
* Copyright (c) 2013-2014 Timo Teräs <timo.teras@iki.fi>
|
|
*/
|
|
/* ====================================================================
|
|
* 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"
|
|
|
|
#if defined(OPENSSL_SYS_UNIX) || defined(__APPLE__)
|
|
# 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>
|
|
|
|
|
|
# ifndef NAME_MAX
|
|
# define NAME_MAX 255
|
|
# endif
|
|
# 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));
|
|
}
|
|
|
|
|
|
/*
|
|
* Process an entry; return number of errors.
|
|
*/
|
|
static int 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 1;
|
|
}
|
|
if (strcmp(filename, ep->filename) == 0) {
|
|
found = ep;
|
|
if (digest == NULL)
|
|
break;
|
|
}
|
|
}
|
|
ep = found;
|
|
if (ep == NULL) {
|
|
if (bp->num_needed >= MAX_COLLISIONS) {
|
|
BIO_printf(bio_err,
|
|
"%s: hash table overflow for %s\n",
|
|
opt_getprog(), filename);
|
|
return 1;
|
|
}
|
|
ep = app_malloc(sizeof(*ep), "collision bucket");
|
|
*ep = nilhentry;
|
|
ep->old_id = ~0;
|
|
ep->filename = OPENSSL_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);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check if a symlink goes to the right spot; return 0 if okay.
|
|
* This can be -1 if bad filename, or an error count.
|
|
*/
|
|
static int handle_symlink(const char *filename, const char *fullpath)
|
|
{
|
|
unsigned int hash = 0;
|
|
int i, type, id;
|
|
unsigned char ch;
|
|
char linktarget[PATH_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;
|
|
|
|
return add_entry(type, hash, linktarget, NULL, 0, id);
|
|
}
|
|
|
|
/*
|
|
* process a file, return number of errors.
|
|
*/
|
|
static int do_file(const char *filename, const char *fullpath, enum Hash h)
|
|
{
|
|
STACK_OF (X509_INFO) *inf = NULL;
|
|
X509_INFO *x;
|
|
X509_NAME *name = NULL;
|
|
BIO *b;
|
|
const char *ext;
|
|
unsigned char digest[EVP_MAX_MD_SIZE];
|
|
int type, errs = 0;
|
|
size_t i;
|
|
|
|
/* Does it end with a recognized extension? */
|
|
if ((ext = strrchr(filename, '.')) == NULL)
|
|
goto end;
|
|
for (i = 0; i < OSSL_NELEM(extensions); i++) {
|
|
if (strcasecmp(extensions[i], ext + 1) == 0)
|
|
break;
|
|
}
|
|
if (i >= OSSL_NELEM(extensions))
|
|
goto end;
|
|
|
|
/* Does it have X.509 data in it? */
|
|
if ((b = BIO_new_file(fullpath, "r")) == NULL) {
|
|
BIO_printf(bio_err, "%s: skipping %s, cannot open file\n",
|
|
opt_getprog(), filename);
|
|
errs++;
|
|
goto end;
|
|
}
|
|
inf = PEM_X509_INFO_read_bio(b, NULL, NULL, NULL);
|
|
BIO_free(b);
|
|
if (inf == NULL)
|
|
goto end;
|
|
|
|
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);
|
|
/* This is not an error. */
|
|
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);
|
|
} else {
|
|
++errs;
|
|
goto end;
|
|
}
|
|
if (name) {
|
|
if ((h == HASH_NEW) || (h == HASH_BOTH))
|
|
errs += add_entry(type, X509_NAME_hash(name), filename, digest, 1, ~0);
|
|
if ((h == HASH_OLD) || (h == HASH_BOTH))
|
|
errs += add_entry(type, X509_NAME_hash_old(name), filename, digest, 1, ~0);
|
|
}
|
|
|
|
end:
|
|
sk_X509_INFO_pop_free(inf, X509_INFO_free);
|
|
return errs;
|
|
}
|
|
|
|
/*
|
|
* Process a directory; return number of errors found.
|
|
*/
|
|
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 n, nextid, buflen, errs = 0;
|
|
size_t i;
|
|
const char *pathsep;
|
|
const char *filename;
|
|
char *buf;
|
|
|
|
if (app_access(dirname, W_OK) < 0) {
|
|
BIO_printf(bio_err, "Skipping %s, can't write\n", dirname);
|
|
return 1;
|
|
}
|
|
buflen = strlen(dirname);
|
|
pathsep = (buflen && dirname[buflen - 1] == '/') ? "" : "/";
|
|
buflen += NAME_MAX + 1 + 1;
|
|
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;
|
|
errs += do_file(filename, buf, h);
|
|
}
|
|
OPENSSL_DIR_end(&d);
|
|
|
|
for (i = 0; i < 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));
|
|
errs++;
|
|
}
|
|
if (symlink(ep->filename, buf) < 0) {
|
|
BIO_printf(bio_err,
|
|
"%s: Can't symlink %s, %s\n",
|
|
opt_getprog(), ep->filename,
|
|
strerror(errno));
|
|
errs++;
|
|
}
|
|
} 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));
|
|
errs++;
|
|
}
|
|
}
|
|
OPENSSL_free(ep->filename);
|
|
OPENSSL_free(ep);
|
|
}
|
|
OPENSSL_free(bp);
|
|
}
|
|
hash_table[i] = NULL;
|
|
}
|
|
|
|
OPENSSL_free(buf);
|
|
return errs;
|
|
}
|
|
|
|
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 errs = 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)
|
|
errs += do_dir(*argv++, h);
|
|
} else if ((env = getenv("SSL_CERT_DIR")) != NULL) {
|
|
m = OPENSSL_strdup(env);
|
|
for (e = strtok(m, ":"); e != NULL; e = strtok(NULL, ":"))
|
|
errs += do_dir(e, h);
|
|
OPENSSL_free(m);
|
|
} else {
|
|
errs += do_dir("/etc/ssl/certs", h);
|
|
}
|
|
|
|
end:
|
|
return errs;
|
|
}
|
|
|
|
#else
|
|
OPTIONS rehash_options[] = {
|
|
{NULL}
|
|
};
|
|
|
|
int rehash_main(int argc, char **argv)
|
|
{
|
|
BIO_printf(bio_err, "Not available; use c_rehash script\n");
|
|
return (1);
|
|
}
|
|
|
|
#endif /* defined(OPENSSL_SYS_UNIX) || defined(__APPLE__) */
|