154 lines
3.2 KiB
C
154 lines
3.2 KiB
C
// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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#include <string.h>
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#include <openssl/buf.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/obj.h>
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#include <openssl/x509.h>
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#include "../internal.h"
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#include "internal.h"
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// Limit to ensure we don't overflow: much greater than
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// anything enountered in practice.
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#define NAME_ONELINE_MAX (1024 * 1024)
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char *X509_NAME_oneline(const X509_NAME *a, char *buf, int len) {
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X509_NAME_ENTRY *ne;
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size_t i;
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int n, lold, l, l1, l2, num, j, type;
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const char *s;
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char *p;
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unsigned char *q;
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BUF_MEM *b = NULL;
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static const char hex[17] = "0123456789ABCDEF";
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int gs_doit[4];
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char tmp_buf[80];
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if (buf == NULL) {
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if ((b = BUF_MEM_new()) == NULL) {
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goto err;
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}
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if (!BUF_MEM_grow(b, 200)) {
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goto err;
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}
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b->data[0] = '\0';
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len = 200;
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} else if (len <= 0) {
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return NULL;
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}
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if (a == NULL) {
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if (b) {
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buf = b->data;
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OPENSSL_free(b);
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}
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OPENSSL_strlcpy(buf, "NO X509_NAME", len);
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return buf;
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}
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len--; // space for '\0'
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l = 0;
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for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
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ne = sk_X509_NAME_ENTRY_value(a->entries, i);
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n = OBJ_obj2nid(ne->object);
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if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
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i2t_ASN1_OBJECT(tmp_buf, sizeof(tmp_buf), ne->object);
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s = tmp_buf;
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}
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l1 = strlen(s);
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type = ne->value->type;
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num = ne->value->length;
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if (num > NAME_ONELINE_MAX) {
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OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
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goto err;
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}
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q = ne->value->data;
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if ((type == V_ASN1_GENERALSTRING) && ((num % 4) == 0)) {
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gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 0;
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for (j = 0; j < num; j++) {
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if (q[j] != 0) {
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gs_doit[j & 3] = 1;
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}
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}
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if (gs_doit[0] | gs_doit[1] | gs_doit[2]) {
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gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
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} else {
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gs_doit[0] = gs_doit[1] = gs_doit[2] = 0;
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gs_doit[3] = 1;
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}
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} else {
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gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
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}
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for (l2 = j = 0; j < num; j++) {
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if (!gs_doit[j & 3]) {
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continue;
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}
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l2++;
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if ((q[j] < ' ') || (q[j] > '~')) {
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l2 += 3;
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}
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}
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lold = l;
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l += 1 + l1 + 1 + l2;
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if (l > NAME_ONELINE_MAX) {
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OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
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goto err;
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}
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if (b != NULL) {
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if (!BUF_MEM_grow(b, l + 1)) {
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goto err;
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}
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p = &(b->data[lold]);
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} else if (l > len) {
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break;
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} else {
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p = &(buf[lold]);
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}
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*(p++) = '/';
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OPENSSL_memcpy(p, s, (unsigned int)l1);
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p += l1;
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*(p++) = '=';
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q = ne->value->data;
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for (j = 0; j < num; j++) {
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if (!gs_doit[j & 3]) {
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continue;
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}
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n = q[j];
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if ((n < ' ') || (n > '~')) {
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*(p++) = '\\';
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*(p++) = 'x';
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*(p++) = hex[(n >> 4) & 0x0f];
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*(p++) = hex[n & 0x0f];
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} else {
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*(p++) = n;
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}
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}
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*p = '\0';
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}
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if (b != NULL) {
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p = b->data;
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OPENSSL_free(b);
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} else {
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p = buf;
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}
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if (i == 0) {
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*p = '\0';
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}
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return p;
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err:
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BUF_MEM_free(b);
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return NULL;
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}
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