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/*
* Copyright 2015-2023 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2013-2014 Timo Teräs <timo.teras@gmail.com>
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "apps.h"
#include "progs.h"
#if defined(OPENSSL_SYS_UNIX) || defined(__APPLE__) || \
(defined(__VMS) && defined(__DECC) && __CRTL_VER >= 80300000)
# include <unistd.h>
# include <stdio.h>
# include <limits.h>
# include <errno.h>
# include <string.h>
# include <ctype.h>
# include <sys/stat.h>
/*
* Make sure that the processing of symbol names is treated the same as when
* libcrypto is built. This is done automatically for public headers (see
* include/openssl/__DECC_INCLUDE_PROLOGUE.H and __DECC_INCLUDE_EPILOGUE.H),
* but not for internal headers.
*/
# ifdef __VMS
# pragma names save
# pragma names as_is,shortened
# endif
# include "internal/o_dir.h"
# ifdef __VMS
# pragma names restore
# endif
# include <openssl/evp.h>
# include <openssl/pem.h>
# include <openssl/x509.h>
# ifndef PATH_MAX
# define PATH_MAX 4096
# endif
# define MAX_COLLISIONS 256
# if defined(OPENSSL_SYS_VXWORKS)
/*
* VxWorks has no symbolic links
*/
# define lstat(path, buf) stat(path, buf)
int symlink(const char *target, const char *linkpath)
{
errno = ENOSYS;
return -1;
}
ssize_t readlink(const char *pathname, char *buf, size_t bufsiz)
{
errno = ENOSYS;
return -1;
}
# endif
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: warning: skipping duplicate %s in %s\n",
opt_getprog(),
type == TYPE_CERT ? "certificate" : "CRL", filename);
return 0;
}
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: error: 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 (ep->filename == NULL) {
OPENSSL_free(ep);
ep = NULL;
BIO_printf(bio_err, "out of memory\n");
return 1;
}
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;
ossl_ssize_t n;
for (i = 0; i < 8; i++) {
ch = filename[i];
if (!isxdigit(ch))
return -1;
hash <<= 4;
hash += OPENSSL_hexchar2int(ch);
}
if (filename[i++] != '.')
return -1;
for (type = OSSL_NELEM(suffixes) - 1; type > 0;
|