| /* 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, "es, 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; |
| } |