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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/crypto/asn1/a_strex.c
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Diffstat (limited to 'openssl/crypto/asn1/a_strex.c')
-rw-r--r--openssl/crypto/asn1/a_strex.c567
1 files changed, 567 insertions, 0 deletions
diff --git a/openssl/crypto/asn1/a_strex.c b/openssl/crypto/asn1/a_strex.c
new file mode 100644
index 000000000..7fc14d329
--- /dev/null
+++ b/openssl/crypto/asn1/a_strex.c
@@ -0,0 +1,567 @@
+/* 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).
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "cryptlib.h"
+#include <openssl/crypto.h>
+#include <openssl/x509.h>
+#include <openssl/asn1.h>
+
+#include "charmap.h"
+
+/* ASN1_STRING_print_ex() and X509_NAME_print_ex().
+ * Enhanced string and name printing routines handling
+ * multibyte characters, RFC2253 and a host of other
+ * options.
+ */
+
+
+#define CHARTYPE_BS_ESC (ASN1_STRFLGS_ESC_2253 | CHARTYPE_FIRST_ESC_2253 | CHARTYPE_LAST_ESC_2253)
+
+
+/* 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) return 1;
+ if(BIO_write(arg, buf, len) != len) return 0;
+ return 1;
+}
+
+static int send_fp_chars(void *arg, const void *buf, int len)
+{
+ if(!arg) return 1;
+ if(fwrite(buf, 1, len, arg) != (unsigned int)len) return 0;
+ return 1;
+}
+
+typedef int char_io(void *arg, const void *buf, int len);
+
+/* This function handles display of
+ * strings, one character at a time.
+ * It is passed an unsigned long for each
+ * character because it could come from 2 or even
+ * 4 byte forms.
+ */
+
+static int do_esc_char(unsigned long c, unsigned char flags, char *do_quotes, char_io *io_ch, void *arg)
+{
+ unsigned char chflgs, chtmp;
+ char tmphex[HEX_SIZE(long)+3];
+
+ if(c > 0xffffffffL)
+ return -1;
+ if(c > 0xffff) {
+ BIO_snprintf(tmphex, sizeof tmphex, "\\W%08lX", c);
+ if(!io_ch(arg, tmphex, 10)) return -1;
+ return 10;
+ }
+ if(c > 0xff) {
+ BIO_snprintf(tmphex, sizeof tmphex, "\\U%04lX", c);
+ if(!io_ch(arg, tmphex, 6)) return -1;
+ return 6;
+ }
+ chtmp = (unsigned char)c;
+ if(chtmp > 0x7f) chflgs = flags & ASN1_STRFLGS_ESC_MSB;
+ else chflgs = char_type[chtmp] & flags;
+ if(chflgs & CHARTYPE_BS_ESC) {
+ /* If we don't escape with quotes, signal we need quotes */
+ if(chflgs & ASN1_STRFLGS_ESC_QUOTE) {
+ if(do_quotes) *do_quotes = 1;
+ if(!io_ch(arg, &chtmp, 1)) return -1;
+ return 1;
+ }
+ if(!io_ch(arg, "\\", 1)) return -1;
+ if(!io_ch(arg, &chtmp, 1)) return -1;
+ return 2;
+ }
+ if(chflgs & (ASN1_STRFLGS_ESC_CTRL|ASN1_STRFLGS_ESC_MSB)) {
+ BIO_snprintf(tmphex, 11, "\\%02X", chtmp);
+ if(!io_ch(arg, tmphex, 3)) return -1;
+ return 3;
+ }
+ if(!io_ch(arg, &chtmp, 1)) return -1;
+ return 1;
+}
+
+#define BUF_TYPE_WIDTH_MASK 0x7
+#define BUF_TYPE_CONVUTF8 0x8
+
+/* This function sends each character in a buffer to
+ * do_esc_char(). It interprets the content formats
+ * and converts to or from UTF8 as appropriate.
+ */
+
+static int do_buf(unsigned char *buf, int buflen,
+ int type, unsigned char flags, char *quotes, char_io *io_ch, void *arg)
+{
+ int i, outlen, len;
+ unsigned char orflags, *p, *q;
+ unsigned long c;
+ p = buf;
+ q = buf + buflen;
+ outlen = 0;
+ while(p != q) {
+ if(p == buf && flags & ASN1_STRFLGS_ESC_2253) orflags = CHARTYPE_FIRST_ESC_2253;
+ else orflags = 0;
+ switch(type & BUF_TYPE_WIDTH_MASK) {
+ case 4:
+ c = ((unsigned long)*p++) << 24;
+ c |= ((unsigned long)*p++) << 16;
+ c |= ((unsigned long)*p++) << 8;
+ c |= *p++;
+ break;
+
+ case 2:
+ c = ((unsigned long)*p++) << 8;
+ c |= *p++;
+ break;
+
+ case 1:
+ c = *p++;
+ break;
+
+ case 0:
+ i = UTF8_getc(p, buflen, &c);
+ if(i < 0) return -1; /* Invalid UTF8String */
+ p += i;
+ break;
+ default:
+ return -1; /* invalid width */
+ }
+ if (p == q && flags & ASN1_STRFLGS_ESC_2253) orflags = CHARTYPE_LAST_ESC_2253;
+ if(type & BUF_TYPE_CONVUTF8) {
+ unsigned char utfbuf[6];
+ int utflen;
+ utflen = UTF8_putc(utfbuf, sizeof utfbuf, c);
+ for(i = 0; i < utflen; i++) {
+ /* We don't need to worry about setting orflags correctly
+ * because if utflen==1 its value will be correct anyway
+ * otherwise each character will be > 0x7f and so the
+ * character will never be escaped on first and last.
+ */
+ len = do_esc_char(utfbuf[i], (unsigned char)(flags | orflags), quotes, io_ch, arg);
+ if(len < 0) return -1;
+ outlen += len;
+ }
+ } else {
+ len = do_esc_char(c, (unsigned char)(flags | orflags), quotes, io_ch, arg);
+ if(len < 0) return -1;
+ outlen += len;
+ }
+ }
+ return outlen;
+}
+
+/* This function hex dumps a buffer of characters */
+
+static int do_hex_dump(char_io *io_ch, void *arg, unsigned char *buf, int buflen)
+{
+ static const char hexdig[] = "0123456789ABCDEF";
+ unsigned char *p, *q;
+ char hextmp[2];
+ if(arg) {
+ p = buf;
+ q = buf + buflen;
+ while(p != q) {
+ hextmp[0] = hexdig[*p >> 4];
+ hextmp[1] = hexdig[*p & 0xf];
+ if(!io_ch(arg, hextmp, 2)) return -1;
+ p++;
+ }
+ }
+ return buflen << 1;
+}
+
+/* "dump" a string. This is done when the type is unknown,
+ * or the flags request it. We can either dump the content
+ * octets or the entire DER encoding. This uses the RFC2253
+ * #01234 format.
+ */
+
+static int do_dump(unsigned long lflags, char_io *io_ch, void *arg, ASN1_STRING *str)
+{
+ /* Placing the ASN1_STRING in a temp ASN1_TYPE allows
+ * the DER encoding to readily obtained
+ */
+ ASN1_TYPE t;
+ unsigned char *der_buf, *p;
+ int outlen, der_len;
+
+ if(!io_ch(arg, "#", 1)) return -1;
+ /* If we don't dump DER encoding just dump content octets */
+ if(!(lflags & ASN1_STRFLGS_DUMP_DER)) {
+ outlen = do_hex_dump(io_ch, arg, str->data, str->length);
+ if(outlen < 0) return -1;
+ return outlen + 1;
+ }
+ t.type = str->type;
+ t.value.ptr = (char *)str;
+ der_len = i2d_ASN1_TYPE(&t, NULL);
+ der_buf = OPENSSL_malloc(der_len);
+ if(!der_buf) return -1;
+ p = der_buf;
+ i2d_ASN1_TYPE(&t, &p);
+ outlen = do_hex_dump(io_ch, arg, der_buf, der_len);
+ OPENSSL_free(der_buf);
+ if(outlen < 0) return -1;
+ return outlen + 1;
+}
+
+/* Lookup table to convert tags to character widths,
+ * 0 = UTF8 encoded, -1 is used for non string types
+ * otherwise it is the number of bytes per character
+ */
+
+static const signed char tag2nbyte[] = {
+ -1, -1, -1, -1, -1, /* 0-4 */
+ -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, 1, /* 21-24 */
+ -1, 1, -1, /* 25-27 */
+ 4, -1, 2 /* 28-30 */
+};
+
+#define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \
+ ASN1_STRFLGS_ESC_QUOTE | \
+ ASN1_STRFLGS_ESC_CTRL | \
+ ASN1_STRFLGS_ESC_MSB)
+
+/* This is the main function, print out an
+ * ASN1_STRING taking note of various escape
+ * and display options. Returns number of
+ * characters written or -1 if an error
+ * occurred.
+ */
+
+static int do_print_ex(char_io *io_ch, void *arg, unsigned long lflags, ASN1_STRING *str)
+{
+ int outlen, len;
+ int type;
+ char quotes;
+ unsigned char flags;
+ quotes = 0;
+ /* Keep a copy of escape flags */
+ flags = (unsigned char)(lflags & ESC_FLAGS);
+
+ type = str->type;
+
+ outlen = 0;
+
+
+ if(lflags & ASN1_STRFLGS_SHOW_TYPE) {
+ const char *tagname;
+ tagname = ASN1_tag2str(type);
+ outlen += strlen(tagname);
+ if(!io_ch(arg, tagname, outlen) || !io_ch(arg, ":", 1)) return -1;
+ outlen++;
+ }
+
+ /* Decide what to do with type, either dump content or display it */
+
+ /* Dump everything */
+ if(lflags & ASN1_STRFLGS_DUMP_ALL) type = -1;
+ /* Ignore the string type */
+ else if(lflags & ASN1_STRFLGS_IGNORE_TYPE) type = 1;
+ else {
+ /* Else determine width based on type */
+ if((type > 0) && (type < 31)) type = tag2nbyte[type];
+ else type = -1;
+ if((type == -1) && !(lflags & ASN1_STRFLGS_DUMP_UNKNOWN)) type = 1;
+ }
+
+ if(type == -1) {
+ len = do_dump(lflags, io_ch, arg, str);
+ if(len < 0) return -1;
+ outlen += len;
+ return outlen;
+ }
+
+ if(lflags & ASN1_STRFLGS_UTF8_CONVERT) {
+ /* Note: if string is UTF8 and we want
+ * to convert to UTF8 then we just interpret
+ * it as 1 byte per character to avoid converting
+ * twice.
+ */
+ if(!type) type = 1;
+ else type |= BUF_TYPE_CONVUTF8;
+ }
+
+ len = do_buf(str->data, str->length, type, flags, &quotes, io_ch, NULL);
+ if(len < 0) return -1;
+ outlen += len;
+ if(quotes) outlen += 2;
+ if(!arg) return outlen;
+ if(quotes && !io_ch(arg, "\"", 1)) return -1;
+ if(do_buf(str->data, str->length, type, flags, NULL, io_ch, arg) < 0)
+ return -1;
+ if(quotes && !io_ch(arg, "\"", 1)) return -1;
+ return outlen;
+}
+
+/* Used for line indenting: print 'indent' spaces */
+
+static int do_indent(char_io *io_ch, void *arg, int indent)
+{
+ int i;
+ for(i = 0; i < indent; i++)
+ if(!io_ch(arg, " ", 1)) return 0;
+ return 1;
+}
+
+#define FN_WIDTH_LN 25
+#define FN_WIDTH_SN 10
+
+static int do_name_ex(char_io *io_ch, void *arg, 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;
+ char objtmp[80];
+ const char *objbuf;
+ int outlen, len;
+ char *sep_dn, *sep_mv, *sep_eq;
+ int sep_dn_len, sep_mv_len, sep_eq_len;
+ if(indent < 0) indent = 0;
+ outlen = indent;
+ if(!do_indent(io_ch, arg, indent)) return -1;
+ switch (flags & XN_FLAG_SEP_MASK)
+ {
+ case XN_FLAG_SEP_MULTILINE:
+ sep_dn = "\n";
+ sep_dn_len = 1;
+ sep_mv = " + ";
+ sep_mv_len = 3;
+ break;
+
+ case XN_FLAG_SEP_COMMA_PLUS:
+ sep_dn = ",";
+ sep_dn_len = 1;
+ sep_mv = "+";
+ sep_mv_len = 1;
+ indent = 0;
+ break;
+
+ case XN_FLAG_SEP_CPLUS_SPC:
+ sep_dn = ", ";
+ sep_dn_len = 2;
+ sep_mv = " + ";
+ sep_mv_len = 3;
+ indent = 0;
+ break;
+
+ case XN_FLAG_SEP_SPLUS_SPC:
+ sep_dn = "; ";
+ sep_dn_len = 2;
+ sep_mv = " + ";
+ sep_mv_len = 3;
+ indent = 0;
+ break;
+
+ default:
+ return -1;
+ }
+
+ if(flags & XN_FLAG_SPC_EQ) {
+ sep_eq = " = ";
+ sep_eq_len = 3;
+ } else {
+ sep_eq = "=";
+ sep_eq_len = 1;
+ }
+
+ fn_opt = flags & XN_FLAG_FN_MASK;
+
+ cnt = X509_NAME_entry_count(n);
+ for(i = 0; i < cnt; i++) {
+ if(flags & XN_FLAG_DN_REV)
+ ent = X509_NAME_get_entry(n, cnt - i - 1);
+ else ent = X509_NAME_get_entry(n, i);
+ if(prev != -1) {
+ if(prev == ent->set) {
+ if(!io_ch(arg, sep_mv, sep_mv_len)) return -1;
+ outlen += sep_mv_len;
+ } else {
+ if(!io_ch(arg, sep_dn, sep_dn_len)) return -1;
+ outlen += sep_dn_len;
+ if(!do_indent(io_ch, arg, indent)) return -1;
+ outlen += indent;
+ }
+ }
+ prev = ent->set;
+ fn = X509_NAME_ENTRY_get_object(ent);
+ val = X509_NAME_ENTRY_get_data(ent);
+ fn_nid = OBJ_obj2nid(fn);
+ if(fn_opt != XN_FLAG_FN_NONE) {
+ int objlen, fld_len;
+ if((fn_opt == XN_FLAG_FN_OID) || (fn_nid==NID_undef) ) {
+ OBJ_obj2txt(objtmp, sizeof objtmp, fn, 1);
+ fld_len = 0; /* XXX: what should this be? */
+ objbuf = objtmp;
+ } else {
+ if(fn_opt == XN_FLAG_FN_SN) {
+ fld_len = FN_WIDTH_SN;
+ objbuf = OBJ_nid2sn(fn_nid);
+ } else if(fn_opt == XN_FLAG_FN_LN) {
+ fld_len = FN_WIDTH_LN;
+ objbuf = OBJ_nid2ln(fn_nid);
+ } else {
+ fld_len = 0; /* XXX: what should this be? */
+ objbuf = "";
+ }
+ }
+ objlen = strlen(objbuf);
+ if(!io_ch(arg, objbuf, objlen)) return -1;
+ if ((objlen < fld_len) && (flags & XN_FLAG_FN_ALIGN)) {
+ if (!do_indent(io_ch, arg, fld_len - objlen)) return -1;
+ outlen += fld_len - objlen;
+ }
+ if(!io_ch(arg, sep_eq, sep_eq_len)) return -1;
+ outlen += objlen + sep_eq_len;
+ }
+ /* If the field name is unknown then fix up the DER dump
+ * flag. We might want to limit this further so it will
+ * DER dump on anything other than a few 'standard' fields.
+ */
+ if((fn_nid == NID_undef) && (flags & XN_FLAG_DUMP_UNKNOWN_FIELDS))
+ orflags = ASN1_STRFLGS_DUMP_ALL;
+ else orflags = 0;
+
+ len = do_print_ex(io_ch, arg, flags | orflags, val);
+ if(len < 0) return -1;
+ outlen += len;
+ }
+ return outlen;
+}
+
+/* Wrappers round the main functions */
+
+int X509_NAME_print_ex(BIO *out, X509_NAME *nm, int indent, unsigned long flags)
+{
+ if(flags == XN_FLAG_COMPAT)
+ return X509_NAME_print(out, nm, indent);
+ return do_name_ex(send_bio_chars, out, nm, indent, flags);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int X509_NAME_print_ex_fp(FILE *fp, X509_NAME *nm, int indent, unsigned long flags)
+{
+ if(flags == XN_FLAG_COMPAT)
+ {
+ BIO *btmp;
+ int ret;
+ btmp = BIO_new_fp(fp, BIO_NOCLOSE);
+ if(!btmp) return -1;
+ ret = X509_NAME_print(btmp, nm, indent);
+ BIO_free(btmp);
+ return ret;
+ }
+ return do_name_ex(send_fp_chars, fp, nm, indent, flags);
+}
+#endif
+
+int ASN1_STRING_print_ex(BIO *out, ASN1_STRING *str, unsigned long flags)
+{
+ return do_print_ex(send_bio_chars, out, flags, str);
+}
+
+#ifndef OPENSSL_NO_FP_API
+int ASN1_STRING_print_ex_fp(FILE *fp, ASN1_STRING *str, unsigned long flags)
+{
+ return do_print_ex(send_fp_chars, fp, flags, str);
+}
+#endif
+
+/* Utility function: convert any string type to UTF8, returns number of bytes
+ * in output string or a negative error code
+ */
+
+int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in)
+{
+ ASN1_STRING stmp, *str = &stmp;
+ int mbflag, type, ret;
+ if(!in) return -1;
+ type = in->type;
+ if((type < 0) || (type > 30)) return -1;
+ mbflag = tag2nbyte[type];
+ if(mbflag == -1) return -1;
+ mbflag |= MBSTRING_FLAG;
+ stmp.data = NULL;
+ ret = ASN1_mbstring_copy(&str, in->data, in->length, mbflag, B_ASN1_UTF8STRING);
+ if(ret < 0) return ret;
+ *out = stmp.data;
+ return stmp.length;
+}