X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fasn1%2Fa_strex.c;h=9839f5c76eb3e28062f81f5ac193e982c30f8833;hp=765698f14435ea5cf6fa03630be6978f88c3071f;hb=73a9f60dd127df9ca05bec7afd835ff7c9bee9ae;hpb=0f113f3ee4d629ef9a4a30911b22b224772085e5 diff --git a/crypto/asn1/a_strex.c b/crypto/asn1/a_strex.c index 765698f144..9839f5c76e 100644 --- a/crypto/asn1/a_strex.c +++ b/crypto/asn1/a_strex.c @@ -1,65 +1,16 @@ -/* a_strex.c */ /* - * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project - * 2000. - */ -/* ==================================================================== - * Copyright (c) 2000 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). + * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. * + * Licensed under the OpenSSL license (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 #include -#include "cryptlib.h" +#include "internal/cryptlib.h" +#include "internal/asn1_int.h" #include #include #include @@ -75,6 +26,7 @@ #define CHARTYPE_BS_ESC (ASN1_STRFLGS_ESC_2253 | CHARTYPE_FIRST_ESC_2253 | CHARTYPE_LAST_ESC_2253) #define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \ + ASN1_STRFLGS_ESC_2254 | \ ASN1_STRFLGS_ESC_QUOTE | \ ASN1_STRFLGS_ESC_CTRL | \ ASN1_STRFLGS_ESC_MSB) @@ -83,18 +35,6 @@ * Three IO functions for sending data to memory, a BIO and and a FILE * pointer. */ -#if 0 /* never used */ -static int send_mem_chars(void *arg, const void *buf, int len) -{ - unsigned char **out = arg; - if (!out) - return 1; - memcpy(*out, buf, len); - *out += len; - return 1; -} -#endif - static int send_bio_chars(void *arg, const void *buf, int len) { if (!arg) @@ -104,6 +44,7 @@ static int send_bio_chars(void *arg, const void *buf, int len) return 1; } +#ifndef OPENSSL_NO_STDIO static int send_fp_chars(void *arg, const void *buf, int len) { if (!arg) @@ -112,6 +53,7 @@ static int send_fp_chars(void *arg, const void *buf, int len) return 0; return 1; } +#endif typedef int char_io (void *arg, const void *buf, int len); @@ -124,7 +66,8 @@ typedef int char_io (void *arg, const void *buf, int len); static int do_esc_char(unsigned long c, unsigned char flags, char *do_quotes, char_io *io_ch, void *arg) { - unsigned char chflgs, chtmp; + unsigned short chflgs; + unsigned char chtmp; char tmphex[HEX_SIZE(long) + 3]; if (c > 0xffffffffL) @@ -161,7 +104,9 @@ static int do_esc_char(unsigned long c, unsigned char flags, char *do_quotes, return -1; return 2; } - if (chflgs & (ASN1_STRFLGS_ESC_CTRL | ASN1_STRFLGS_ESC_MSB)) { + if (chflgs & (ASN1_STRFLGS_ESC_CTRL + | ASN1_STRFLGS_ESC_MSB + | ASN1_STRFLGS_ESC_2254)) { BIO_snprintf(tmphex, 11, "\\%02X", chtmp); if (!io_ch(arg, tmphex, 3)) return -1; @@ -191,11 +136,12 @@ static int do_esc_char(unsigned long c, unsigned char flags, char *do_quotes, */ static int do_buf(unsigned char *buf, int buflen, - int type, unsigned char flags, char *quotes, char_io *io_ch, + int type, unsigned short flags, char *quotes, char_io *io_ch, void *arg) { int i, outlen, len; - unsigned char orflags, *p, *q; + unsigned short orflags; + unsigned char *p, *q; unsigned long c; p = buf; q = buf + buflen; @@ -245,7 +191,7 @@ static int do_buf(unsigned char *buf, int buflen, * character will never be escaped on first and last. */ len = - do_esc_char(utfbuf[i], (unsigned char)(flags | orflags), + do_esc_char(utfbuf[i], (unsigned short)(flags | orflags), quotes, io_ch, arg); if (len < 0) return -1; @@ -253,7 +199,7 @@ static int do_buf(unsigned char *buf, int buflen, } } else { len = - do_esc_char(c, (unsigned char)(flags | orflags), quotes, + do_esc_char(c, (unsigned short)(flags | orflags), quotes, io_ch, arg); if (len < 0) return -1; @@ -292,7 +238,7 @@ static int do_hex_dump(char_io *io_ch, void *arg, unsigned char *buf, */ static int do_dump(unsigned long lflags, char_io *io_ch, void *arg, - ASN1_STRING *str) + const ASN1_STRING *str) { /* * Placing the ASN1_STRING in a temp ASN1_TYPE allows the DER encoding to @@ -315,7 +261,7 @@ static int do_dump(unsigned long lflags, char_io *io_ch, void *arg, t.value.ptr = (char *)str; der_len = i2d_ASN1_TYPE(&t, NULL); der_buf = OPENSSL_malloc(der_len); - if (!der_buf) + if (der_buf == NULL) return -1; p = der_buf; i2d_ASN1_TYPE(&t, &p); @@ -337,7 +283,7 @@ static const signed char tag2nbyte[] = { -1, -1, -1, -1, -1, /* 5-9 */ -1, -1, 0, -1, /* 10-13 */ -1, -1, -1, -1, /* 15-17 */ - -1, 1, 1, /* 18-20 */ + 1, 1, 1, /* 18-20 */ -1, 1, 1, 1, /* 21-24 */ -1, 1, -1, /* 25-27 */ 4, -1, 2 /* 28-30 */ @@ -350,15 +296,15 @@ static const signed char tag2nbyte[] = { */ static int do_print_ex(char_io *io_ch, void *arg, unsigned long lflags, - ASN1_STRING *str) + const ASN1_STRING *str) { int outlen, len; int type; char quotes; - unsigned char flags; + unsigned short flags; quotes = 0; /* Keep a copy of escape flags */ - flags = (unsigned char)(lflags & ESC_FLAGS); + flags = (unsigned short)(lflags & ESC_FLAGS); type = str->type; @@ -442,14 +388,14 @@ static int do_indent(char_io *io_ch, void *arg, int indent) #define FN_WIDTH_LN 25 #define FN_WIDTH_SN 10 -static int do_name_ex(char_io *io_ch, void *arg, X509_NAME *n, +static int do_name_ex(char_io *io_ch, void *arg, const X509_NAME *n, int indent, unsigned long flags) { int i, prev = -1, orflags, cnt; int fn_opt, fn_nid; ASN1_OBJECT *fn; - ASN1_STRING *val; - X509_NAME_ENTRY *ent; + const ASN1_STRING *val; + const X509_NAME_ENTRY *ent; char objtmp[80]; const char *objbuf; int outlen, len; @@ -513,7 +459,7 @@ static int do_name_ex(char_io *io_ch, void *arg, X509_NAME *n, else ent = X509_NAME_get_entry(n, i); if (prev != -1) { - if (prev == ent->set) { + if (prev == X509_NAME_ENTRY_set(ent)) { if (!io_ch(arg, sep_mv, sep_mv_len)) return -1; outlen += sep_mv_len; @@ -526,7 +472,7 @@ static int do_name_ex(char_io *io_ch, void *arg, X509_NAME *n, outlen += indent; } } - prev = ent->set; + prev = X509_NAME_ENTRY_set(ent); fn = X509_NAME_ENTRY_get_object(ent); val = X509_NAME_ENTRY_get_data(ent); fn_nid = OBJ_obj2nid(fn); @@ -580,7 +526,7 @@ static int do_name_ex(char_io *io_ch, void *arg, X509_NAME *n, /* Wrappers round the main functions */ -int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, +int X509_NAME_print_ex(BIO *out, const X509_NAME *nm, int indent, unsigned long flags) { if (flags == XN_FLAG_COMPAT) @@ -589,7 +535,7 @@ int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, } #ifndef OPENSSL_NO_STDIO -int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, +int X509_NAME_print_ex_fp(FILE *fp, const X509_NAME *nm, int indent, unsigned long flags) { if (flags == XN_FLAG_COMPAT) { @@ -606,13 +552,13 @@ int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, } #endif -int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags) +int ASN1_STRING_print_ex(BIO *out, const ASN1_STRING *str, unsigned long flags) { return do_print_ex(send_bio_chars, out, flags, str); } #ifndef OPENSSL_NO_STDIO -int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags) +int ASN1_STRING_print_ex_fp(FILE *fp, const ASN1_STRING *str, unsigned long flags) { return do_print_ex(send_fp_chars, fp, flags, str); } @@ -623,7 +569,7 @@ int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags) * in output string or a negative error code */ -int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in) +int ASN1_STRING_to_UTF8(unsigned char **out, const ASN1_STRING *in) { ASN1_STRING stmp, *str = &stmp; int mbflag, type, ret; @@ -647,3 +593,53 @@ int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in) *out = stmp.data; return stmp.length; } + +/* Return 1 if host is a valid hostname and 0 otherwise */ +int asn1_valid_host(const ASN1_STRING *host) +{ + int hostlen = host->length; + const unsigned char *hostptr = host->data; + int type = host->type; + int i; + char width = -1; + unsigned short chflags = 0, prevchflags; + + if (type > 0 && type < 31) + width = tag2nbyte[type]; + if (width == -1 || hostlen == 0) + return 0; + /* Treat UTF8String as width 1 as any MSB set is invalid */ + if (width == 0) + width = 1; + for (i = 0 ; i < hostlen; i+= width) { + prevchflags = chflags; + /* Value must be <= 0x7F: check upper bytes are all zeroes */ + if (width == 4) { + if (*hostptr++ != 0 || *hostptr++ != 0 || *hostptr++ != 0) + return 0; + } else if (width == 2) { + if (*hostptr++ != 0) + return 0; + } + if (*hostptr > 0x7f) + return 0; + chflags = char_type[*hostptr++]; + if (!(chflags & (CHARTYPE_HOST_ANY | CHARTYPE_HOST_WILD))) { + /* Nothing else allowed at start or end of string */ + if (i == 0 || i == hostlen - 1) + return 0; + /* Otherwise invalid if not dot or hyphen */ + if (!(chflags & (CHARTYPE_HOST_DOT | CHARTYPE_HOST_HYPHEN))) + return 0; + /* + * If previous is dot or hyphen then illegal unless both + * are hyphens: as .- -. .. are all illegal + */ + if (prevchflags & (CHARTYPE_HOST_DOT | CHARTYPE_HOST_HYPHEN) + && ((prevchflags & CHARTYPE_HOST_DOT) + || (chflags & CHARTYPE_HOST_DOT))) + return 0; + } + } + return 1; +}