1*0Sstevel@tonic-gate /* crypto/asn1/f_string.c */
2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3*0Sstevel@tonic-gate * All rights reserved.
4*0Sstevel@tonic-gate *
5*0Sstevel@tonic-gate * This package is an SSL implementation written
6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com).
7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as
10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions
11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA,
12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms
14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15*0Sstevel@tonic-gate *
16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in
17*0Sstevel@tonic-gate * the code are not to be removed.
18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution
19*0Sstevel@tonic-gate * as the author of the parts of the library used.
20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or
21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package.
22*0Sstevel@tonic-gate *
23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without
24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions
25*0Sstevel@tonic-gate * are met:
26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright
27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer.
28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright
29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the
30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution.
31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software
32*0Sstevel@tonic-gate * must display the following acknowledgement:
33*0Sstevel@tonic-gate * "This product includes cryptographic software written by
34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)"
35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library
36*0Sstevel@tonic-gate * being used are not cryptographic related :-).
37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from
38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement:
39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40*0Sstevel@tonic-gate *
41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51*0Sstevel@tonic-gate * SUCH DAMAGE.
52*0Sstevel@tonic-gate *
53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or
54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be
55*0Sstevel@tonic-gate * copied and put under another distribution licence
56*0Sstevel@tonic-gate * [including the GNU Public Licence.]
57*0Sstevel@tonic-gate */
58*0Sstevel@tonic-gate
59*0Sstevel@tonic-gate #include <stdio.h>
60*0Sstevel@tonic-gate #include "cryptlib.h"
61*0Sstevel@tonic-gate #include <openssl/buffer.h>
62*0Sstevel@tonic-gate #include <openssl/asn1.h>
63*0Sstevel@tonic-gate
i2a_ASN1_STRING(BIO * bp,ASN1_STRING * a,int type)64*0Sstevel@tonic-gate int i2a_ASN1_STRING(BIO *bp, ASN1_STRING *a, int type)
65*0Sstevel@tonic-gate {
66*0Sstevel@tonic-gate int i,n=0;
67*0Sstevel@tonic-gate static const char *h="0123456789ABCDEF";
68*0Sstevel@tonic-gate char buf[2];
69*0Sstevel@tonic-gate
70*0Sstevel@tonic-gate if (a == NULL) return(0);
71*0Sstevel@tonic-gate
72*0Sstevel@tonic-gate if (a->length == 0)
73*0Sstevel@tonic-gate {
74*0Sstevel@tonic-gate if (BIO_write(bp,"0",1) != 1) goto err;
75*0Sstevel@tonic-gate n=1;
76*0Sstevel@tonic-gate }
77*0Sstevel@tonic-gate else
78*0Sstevel@tonic-gate {
79*0Sstevel@tonic-gate for (i=0; i<a->length; i++)
80*0Sstevel@tonic-gate {
81*0Sstevel@tonic-gate if ((i != 0) && (i%35 == 0))
82*0Sstevel@tonic-gate {
83*0Sstevel@tonic-gate if (BIO_write(bp,"\\\n",2) != 2) goto err;
84*0Sstevel@tonic-gate n+=2;
85*0Sstevel@tonic-gate }
86*0Sstevel@tonic-gate buf[0]=h[((unsigned char)a->data[i]>>4)&0x0f];
87*0Sstevel@tonic-gate buf[1]=h[((unsigned char)a->data[i] )&0x0f];
88*0Sstevel@tonic-gate if (BIO_write(bp,buf,2) != 2) goto err;
89*0Sstevel@tonic-gate n+=2;
90*0Sstevel@tonic-gate }
91*0Sstevel@tonic-gate }
92*0Sstevel@tonic-gate return(n);
93*0Sstevel@tonic-gate err:
94*0Sstevel@tonic-gate return(-1);
95*0Sstevel@tonic-gate }
96*0Sstevel@tonic-gate
a2i_ASN1_STRING(BIO * bp,ASN1_STRING * bs,char * buf,int size)97*0Sstevel@tonic-gate int a2i_ASN1_STRING(BIO *bp, ASN1_STRING *bs, char *buf, int size)
98*0Sstevel@tonic-gate {
99*0Sstevel@tonic-gate int ret=0;
100*0Sstevel@tonic-gate int i,j,k,m,n,again,bufsize;
101*0Sstevel@tonic-gate unsigned char *s=NULL,*sp;
102*0Sstevel@tonic-gate unsigned char *bufp;
103*0Sstevel@tonic-gate int num=0,slen=0,first=1;
104*0Sstevel@tonic-gate
105*0Sstevel@tonic-gate bufsize=BIO_gets(bp,buf,size);
106*0Sstevel@tonic-gate for (;;)
107*0Sstevel@tonic-gate {
108*0Sstevel@tonic-gate if (bufsize < 1)
109*0Sstevel@tonic-gate {
110*0Sstevel@tonic-gate if (first)
111*0Sstevel@tonic-gate break;
112*0Sstevel@tonic-gate else
113*0Sstevel@tonic-gate goto err_sl;
114*0Sstevel@tonic-gate }
115*0Sstevel@tonic-gate first=0;
116*0Sstevel@tonic-gate
117*0Sstevel@tonic-gate i=bufsize;
118*0Sstevel@tonic-gate if (buf[i-1] == '\n') buf[--i]='\0';
119*0Sstevel@tonic-gate if (i == 0) goto err_sl;
120*0Sstevel@tonic-gate if (buf[i-1] == '\r') buf[--i]='\0';
121*0Sstevel@tonic-gate if (i == 0) goto err_sl;
122*0Sstevel@tonic-gate again=(buf[i-1] == '\\');
123*0Sstevel@tonic-gate
124*0Sstevel@tonic-gate for (j=i-1; j>0; j--)
125*0Sstevel@tonic-gate {
126*0Sstevel@tonic-gate #ifndef CHARSET_EBCDIC
127*0Sstevel@tonic-gate if (!( ((buf[j] >= '0') && (buf[j] <= '9')) ||
128*0Sstevel@tonic-gate ((buf[j] >= 'a') && (buf[j] <= 'f')) ||
129*0Sstevel@tonic-gate ((buf[j] >= 'A') && (buf[j] <= 'F'))))
130*0Sstevel@tonic-gate #else
131*0Sstevel@tonic-gate /* This #ifdef is not strictly necessary, since
132*0Sstevel@tonic-gate * the characters A...F a...f 0...9 are contiguous
133*0Sstevel@tonic-gate * (yes, even in EBCDIC - but not the whole alphabet).
134*0Sstevel@tonic-gate * Nevertheless, isxdigit() is faster.
135*0Sstevel@tonic-gate */
136*0Sstevel@tonic-gate if (!isxdigit(buf[j]))
137*0Sstevel@tonic-gate #endif
138*0Sstevel@tonic-gate {
139*0Sstevel@tonic-gate i=j;
140*0Sstevel@tonic-gate break;
141*0Sstevel@tonic-gate }
142*0Sstevel@tonic-gate }
143*0Sstevel@tonic-gate buf[i]='\0';
144*0Sstevel@tonic-gate /* We have now cleared all the crap off the end of the
145*0Sstevel@tonic-gate * line */
146*0Sstevel@tonic-gate if (i < 2) goto err_sl;
147*0Sstevel@tonic-gate
148*0Sstevel@tonic-gate bufp=(unsigned char *)buf;
149*0Sstevel@tonic-gate
150*0Sstevel@tonic-gate k=0;
151*0Sstevel@tonic-gate i-=again;
152*0Sstevel@tonic-gate if (i%2 != 0)
153*0Sstevel@tonic-gate {
154*0Sstevel@tonic-gate ASN1err(ASN1_F_A2I_ASN1_STRING,ASN1_R_ODD_NUMBER_OF_CHARS);
155*0Sstevel@tonic-gate goto err;
156*0Sstevel@tonic-gate }
157*0Sstevel@tonic-gate i/=2;
158*0Sstevel@tonic-gate if (num+i > slen)
159*0Sstevel@tonic-gate {
160*0Sstevel@tonic-gate if (s == NULL)
161*0Sstevel@tonic-gate sp=(unsigned char *)OPENSSL_malloc(
162*0Sstevel@tonic-gate (unsigned int)num+i*2);
163*0Sstevel@tonic-gate else
164*0Sstevel@tonic-gate sp=(unsigned char *)OPENSSL_realloc(s,
165*0Sstevel@tonic-gate (unsigned int)num+i*2);
166*0Sstevel@tonic-gate if (sp == NULL)
167*0Sstevel@tonic-gate {
168*0Sstevel@tonic-gate ASN1err(ASN1_F_A2I_ASN1_STRING,ERR_R_MALLOC_FAILURE);
169*0Sstevel@tonic-gate if (s != NULL) OPENSSL_free(s);
170*0Sstevel@tonic-gate goto err;
171*0Sstevel@tonic-gate }
172*0Sstevel@tonic-gate s=sp;
173*0Sstevel@tonic-gate slen=num+i*2;
174*0Sstevel@tonic-gate }
175*0Sstevel@tonic-gate for (j=0; j<i; j++,k+=2)
176*0Sstevel@tonic-gate {
177*0Sstevel@tonic-gate for (n=0; n<2; n++)
178*0Sstevel@tonic-gate {
179*0Sstevel@tonic-gate m=bufp[k+n];
180*0Sstevel@tonic-gate if ((m >= '0') && (m <= '9'))
181*0Sstevel@tonic-gate m-='0';
182*0Sstevel@tonic-gate else if ((m >= 'a') && (m <= 'f'))
183*0Sstevel@tonic-gate m=m-'a'+10;
184*0Sstevel@tonic-gate else if ((m >= 'A') && (m <= 'F'))
185*0Sstevel@tonic-gate m=m-'A'+10;
186*0Sstevel@tonic-gate else
187*0Sstevel@tonic-gate {
188*0Sstevel@tonic-gate ASN1err(ASN1_F_A2I_ASN1_STRING,ASN1_R_NON_HEX_CHARACTERS);
189*0Sstevel@tonic-gate goto err;
190*0Sstevel@tonic-gate }
191*0Sstevel@tonic-gate s[num+j]<<=4;
192*0Sstevel@tonic-gate s[num+j]|=m;
193*0Sstevel@tonic-gate }
194*0Sstevel@tonic-gate }
195*0Sstevel@tonic-gate num+=i;
196*0Sstevel@tonic-gate if (again)
197*0Sstevel@tonic-gate bufsize=BIO_gets(bp,buf,size);
198*0Sstevel@tonic-gate else
199*0Sstevel@tonic-gate break;
200*0Sstevel@tonic-gate }
201*0Sstevel@tonic-gate bs->length=num;
202*0Sstevel@tonic-gate bs->data=s;
203*0Sstevel@tonic-gate ret=1;
204*0Sstevel@tonic-gate err:
205*0Sstevel@tonic-gate if (0)
206*0Sstevel@tonic-gate {
207*0Sstevel@tonic-gate err_sl:
208*0Sstevel@tonic-gate ASN1err(ASN1_F_A2I_ASN1_STRING,ASN1_R_SHORT_LINE);
209*0Sstevel@tonic-gate }
210*0Sstevel@tonic-gate return(ret);
211*0Sstevel@tonic-gate }
212*0Sstevel@tonic-gate
213