diff options
Diffstat (limited to 'openssl/crypto/asn1/f_string.c')
| -rw-r--r-- | openssl/crypto/asn1/f_string.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/openssl/crypto/asn1/f_string.c b/openssl/crypto/asn1/f_string.c new file mode 100644 index 0000000..0f7b9cf --- /dev/null +++ b/openssl/crypto/asn1/f_string.c @@ -0,0 +1,209 @@ +/* crypto/asn1/f_string.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * 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 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 acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS 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 AUTHOR OR 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. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include <stdio.h> +#include "cryptlib.h" +#include <openssl/buffer.h> +#include <openssl/asn1.h> + +int i2a_ASN1_STRING(BIO *bp, ASN1_STRING *a, int type) +{ + int i, n = 0; + static const char *h = "0123456789ABCDEF"; + char buf[2]; + + if (a == NULL) + return (0); + + if (a->length == 0) { + if (BIO_write(bp, "0", 1) != 1) + goto err; + n = 1; + } else { + for (i = 0; i < a->length; i++) { + if ((i != 0) && (i % 35 == 0)) { + if (BIO_write(bp, "\\\n", 2) != 2) + goto err; + n += 2; + } + buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f]; + buf[1] = h[((unsigned char)a->data[i]) & 0x0f]; + if (BIO_write(bp, buf, 2) != 2) + goto err; + n += 2; + } + } + return (n); + err: + return (-1); +} + +int a2i_ASN1_STRING(BIO *bp, ASN1_STRING *bs, char *buf, int size) +{ + int ret = 0; + int i, j, k, m, n, again, bufsize; + unsigned char *s = NULL, *sp; + unsigned char *bufp; + int num = 0, slen = 0, first = 1; + + bufsize = BIO_gets(bp, buf, size); + for (;;) { + if (bufsize < 1) { + if (first) + break; + else + goto err_sl; + } + first = 0; + + i = bufsize; + if (buf[i - 1] == '\n') + buf[--i] = '\0'; + if (i == 0) + goto err_sl; + if (buf[i - 1] == '\r') + buf[--i] = '\0'; + if (i == 0) + goto err_sl; + again = (buf[i - 1] == '\\'); + + for (j = i - 1; j > 0; j--) { +#ifndef CHARSET_EBCDIC + if (!(((buf[j] >= '0') && (buf[j] <= '9')) || + ((buf[j] >= 'a') && (buf[j] <= 'f')) || + ((buf[j] >= 'A') && (buf[j] <= 'F')))) +#else + /* + * This #ifdef is not strictly necessary, since the characters + * A...F a...f 0...9 are contiguous (yes, even in EBCDIC - but + * not the whole alphabet). Nevertheless, isxdigit() is faster. + */ + if (!isxdigit(buf[j])) +#endif + { + i = j; + break; + } + } + buf[i] = '\0'; + /* + * We have now cleared all the crap off the end of the line + */ + if (i < 2) + goto err_sl; + + bufp = (unsigned char *)buf; + + k = 0; + i -= again; + if (i % 2 != 0) { + ASN1err(ASN1_F_A2I_ASN1_STRING, ASN1_R_ODD_NUMBER_OF_CHARS); + goto err; + } + i /= 2; + if (num + i > slen) { + if (s == NULL) + sp = (unsigned char *)OPENSSL_malloc((unsigned int)num + + i * 2); + else + sp = (unsigned char *)OPENSSL_realloc(s, + (unsigned int)num + + i * 2); + if (sp == NULL) { + ASN1err(ASN1_F_A2I_ASN1_STRING, ERR_R_MALLOC_FAILURE); + goto err; + } + s = sp; + slen = num + i * 2; + } + for (j = 0; j < i; j++, k += 2) { + for (n = 0; n < 2; n++) { + m = bufp[k + n]; + if ((m >= '0') && (m <= '9')) + m -= '0'; + else if ((m >= 'a') && (m <= 'f')) + m = m - 'a' + 10; + else if ((m >= 'A') && (m <= 'F')) + m = m - 'A' + 10; + else { + ASN1err(ASN1_F_A2I_ASN1_STRING, + ASN1_R_NON_HEX_CHARACTERS); + goto err; + } + s[num + j] <<= 4; + s[num + j] |= m; + } + } + num += i; + if (again) + bufsize = BIO_gets(bp, buf, size); + else + break; + } + bs->length = num; + bs->data = s; + ret = 1; + err: + if (0) { + err_sl: + ASN1err(ASN1_F_A2I_ASN1_STRING, ASN1_R_SHORT_LINE); + } + if (ret != 1) + OPENSSL_free(s); + return (ret); +} |