/src/openssl/crypto/asn1/asn1_parse.c

Source (jump to first uncovered line)
/*
 * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/objects.h>
#include <openssl/asn1.h>

#ifndef ASN1_PARSE_MAXDEPTH
#define ASN1_PARSE_MAXDEPTH 128
#endif

static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
                       int offset, int depth, int indent, int dump);
static int asn1_print_info(BIO *bp, long offset, int depth, int hl, long len,
                           int tag, int xclass, int constructed, int indent)
{
    char str[128];
    const char *p;
    int pop_f_prefix = 0;
    long saved_indent = -1;
    int i = 0;
    BIO *bio = NULL;

    if (constructed & V_ASN1_CONSTRUCTED)
        p = "cons: ";
    else
        p = "prim: ";
    if (constructed != (V_ASN1_CONSTRUCTED | 1)) {
        if (BIO_snprintf(str, sizeof(str), "%5ld:d=%-2d hl=%ld l=%4ld %s",
                         offset, depth, (long)hl, len, p) <= 0)
            goto err;
    } else {
        if (BIO_snprintf(str, sizeof(str), "%5ld:d=%-2d hl=%ld l=inf  %s",
                         offset, depth, (long)hl, p) <= 0)
            goto err;
    }
    if (bp != NULL) {
        if (BIO_set_prefix(bp, str) <= 0) {
            if ((bio = BIO_new(BIO_f_prefix())) == NULL
                    || (bp = BIO_push(bio, bp)) == NULL)
                goto err;
            pop_f_prefix = 1;
        }
        saved_indent = BIO_get_indent(bp);
        if (BIO_set_prefix(bp, str) <= 0 || BIO_set_indent(bp, indent) <= 0)
            goto err;
    }

    /*
     * BIO_set_prefix made a copy of |str|, so we can safely use it for
     * something else, ASN.1 tag printout.
     */
    p = str;
    if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)
        BIO_snprintf(str, sizeof(str), "priv [ %d ] ", tag);
    else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)
        BIO_snprintf(str, sizeof(str), "cont [ %d ]", tag);
    else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)
        BIO_snprintf(str, sizeof(str), "appl [ %d ]", tag);
    else if (tag > 30)
        BIO_snprintf(str, sizeof(str), "<ASN1 %d>", tag);
    else
        p = ASN1_tag2str(tag);

    i = (BIO_printf(bp, "%-18s", p) > 0);
 err:
    if (saved_indent >= 0)
        BIO_set_indent(bp, saved_indent);
    if (pop_f_prefix)
        BIO_pop(bp);
    BIO_free(bio);
    return i;
}

int ASN1_parse(BIO *bp, const unsigned char *pp, long len, int indent)
{
    return asn1_parse2(bp, &pp, len, 0, 0, indent, 0);
}

int ASN1_parse_dump(BIO *bp, const unsigned char *pp, long len, int indent,
                    int dump)
{
    return asn1_parse2(bp, &pp, len, 0, 0, indent, dump);
}

static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
                       int offset, int depth, int indent, int dump)
{
    const unsigned char *p, *ep, *tot, *op, *opp;
    long len;
    int tag, xclass, ret = 0;
    int nl, hl, j, r;
    ASN1_OBJECT *o = NULL;
    ASN1_OCTET_STRING *os = NULL;
    ASN1_INTEGER *ai = NULL;
    ASN1_ENUMERATED *ae = NULL;
    /* ASN1_BMPSTRING *bmp=NULL; */
    int dump_indent, dump_cont = 0;

    if (depth > ASN1_PARSE_MAXDEPTH) {
        BIO_puts(bp, "BAD RECURSION DEPTH\n");
        return 0;
    }

    dump_indent = 6;            /* Because we know BIO_dump_indent() */
    p = *pp;
    tot = p + length;
    while (length > 0) {
        op = p;
        j = ASN1_get_object(&p, &len, &tag, &xclass, length);
        if (j & 0x80) {
            BIO_puts(bp, "Error in encoding\n");
            goto end;
        }
        hl = (p - op);
        length -= hl;
        /*
         * if j == 0x21 it is a constructed indefinite length object
         */
        if (!asn1_print_info(bp, (long)offset + (long)(op - *pp), depth,
                             hl, len, tag, xclass, j, (indent) ? depth : 0))
            goto end;
        if (j & V_ASN1_CONSTRUCTED) {
            const unsigned char *sp = p;

            ep = p + len;
            if (BIO_write(bp, "\n", 1) <= 0)
                goto end;
            if (len > length) {
                BIO_printf(bp, "length is greater than %ld\n", length);
                goto end;
            }
            if ((j == 0x21) && (len == 0)) {
                for (;;) {
                    r = asn1_parse2(bp, &p, (long)(tot - p),
                                    offset + (p - *pp), depth + 1,
                                    indent, dump);
                    if (r == 0)
                        goto end;
                    if ((r == 2) || (p >= tot)) {
                        len = p - sp;
                        break;
                    }
                }
            } else {
                long tmp = len;

                while (p < ep) {
                    sp = p;
                    r = asn1_parse2(bp, &p, tmp,
                                    offset + (p - *pp), depth + 1,
                                    indent, dump);
                    if (r == 0)
                        goto end;
                    tmp -= p - sp;
                }
            }
        } else if (xclass != 0) {
            p += len;
            if (BIO_write(bp, "\n", 1) <= 0)
                goto end;
        } else {
            nl = 0;
            if ((tag == V_ASN1_PRINTABLESTRING) ||
                (tag == V_ASN1_T61STRING) ||
                (tag == V_ASN1_IA5STRING) ||
                (tag == V_ASN1_VISIBLESTRING) ||
                (tag == V_ASN1_NUMERICSTRING) ||
                (tag == V_ASN1_UTF8STRING) ||
                (tag == V_ASN1_UTCTIME) || (tag == V_ASN1_GENERALIZEDTIME)) {
                if (BIO_write(bp, ":", 1) <= 0)
                    goto end;
                if ((len > 0) && BIO_write(bp, (const char *)p, (int)len)
                    != (int)len)
                    goto end;
            } else if (tag == V_ASN1_OBJECT) {
                opp = op;
                if (d2i_ASN1_OBJECT(&o, &opp, len + hl) != NULL) {
                    if (BIO_write(bp, ":", 1) <= 0)
                        goto end;
                    i2a_ASN1_OBJECT(bp, o);
                } else {
                    if (BIO_puts(bp, ":BAD OBJECT") <= 0)
                        goto end;
                    dump_cont = 1;
                }
            } else if (tag == V_ASN1_BOOLEAN) {
                if (len != 1) {
                    if (BIO_puts(bp, ":BAD BOOLEAN") <= 0)
                        goto end;
                    dump_cont = 1;
                }
                if (len > 0)
                    BIO_printf(bp, ":%u", p[0]);
            } else if (tag == V_ASN1_BMPSTRING) {
                /* do the BMP thang */
            } else if (tag == V_ASN1_OCTET_STRING) {
                int i, printable = 1;

                opp = op;
                os = d2i_ASN1_OCTET_STRING(NULL, &opp, len + hl);
                if (os != NULL && os->length > 0) {
                    opp = os->data;
                    /*
                     * testing whether the octet string is printable
                     */
                    for (i = 0; i < os->length; i++) {
                        if (((opp[i] < ' ') &&
                             (opp[i] != '\n') &&
                             (opp[i] != '\r') &&
                             (opp[i] != '\t')) || (opp[i] > '~')) {
                            printable = 0;
                            break;
                        }
                    }
                    if (printable)
                        /* printable string */
                    {
                        if (BIO_write(bp, ":", 1) <= 0)
                            goto end;
                        if (BIO_write(bp, (const char *)opp, os->length) <= 0)
                            goto end;
                    } else if (!dump)
                        /*
                         * not printable => print octet string as hex dump
                         */
                    {
                        if (BIO_write(bp, "[HEX DUMP]:", 11) <= 0)
                            goto end;
                        for (i = 0; i < os->length; i++) {
                            if (BIO_printf(bp, "%02X", opp[i]) <= 0)
                                goto end;
                        }
                    } else
                        /* print the normal dump */
                    {
                        if (!nl) {
                            if (BIO_write(bp, "\n", 1) <= 0)
                                goto end;
                        }
                        if (BIO_dump_indent(bp,
                                            (const char *)opp,
                                            ((dump == -1 || dump >
                                              os->
                                              length) ? os->length : dump),
                                            dump_indent) <= 0)
                            goto end;
                        nl = 1;
                    }
                }
                ASN1_OCTET_STRING_free(os);
                os = NULL;
            } else if (tag == V_ASN1_INTEGER) {
                int i;

                opp = op;
                ai = d2i_ASN1_INTEGER(NULL, &opp, len + hl);
                if (ai != NULL) {
                    if (BIO_write(bp, ":", 1) <= 0)
                        goto end;
                    if (ai->type == V_ASN1_NEG_INTEGER)
                        if (BIO_write(bp, "-", 1) <= 0)
                            goto end;
                    for (i = 0; i < ai->length; i++) {
                        if (BIO_printf(bp, "%02X", ai->data[i]) <= 0)
                            goto end;
                    }
                    if (ai->length == 0) {
                        if (BIO_write(bp, "00", 2) <= 0)
                            goto end;
                    }
                } else {
                    if (BIO_puts(bp, ":BAD INTEGER") <= 0)
                        goto end;
                    dump_cont = 1;
                }
                ASN1_INTEGER_free(ai);
                ai = NULL;
            } else if (tag == V_ASN1_ENUMERATED) {
                int i;

                opp = op;
                ae = d2i_ASN1_ENUMERATED(NULL, &opp, len + hl);
                if (ae != NULL) {
                    if (BIO_write(bp, ":", 1) <= 0)
                        goto end;
                    if (ae->type == V_ASN1_NEG_ENUMERATED)
                        if (BIO_write(bp, "-", 1) <= 0)
                            goto end;
                    for (i = 0; i < ae->length; i++) {
                        if (BIO_printf(bp, "%02X", ae->data[i]) <= 0)
                            goto end;
                    }
                    if (ae->length == 0) {
                        if (BIO_write(bp, "00", 2) <= 0)
                            goto end;
                    }
                } else {
                    if (BIO_puts(bp, ":BAD ENUMERATED") <= 0)
                        goto end;
                    dump_cont = 1;
                }
                ASN1_ENUMERATED_free(ae);
                ae = NULL;
            } else if (len > 0 && dump) {
                if (!nl) {
                    if (BIO_write(bp, "\n", 1) <= 0)
                        goto end;
                }
                if (BIO_dump_indent(bp, (const char *)p,
                                    ((dump == -1 || dump > len) ? len : dump),
                                    dump_indent) <= 0)
                    goto end;
                nl = 1;
            }
            if (dump_cont) {
                int i;
                const unsigned char *tmp = op + hl;
                if (BIO_puts(bp, ":[") <= 0)
                    goto end;
                for (i = 0; i < len; i++) {
                    if (BIO_printf(bp, "%02X", tmp[i]) <= 0)
                        goto end;
                }
                if (BIO_puts(bp, "]") <= 0)
                    goto end;
                dump_cont = 0;
            }

            if (!nl) {
                if (BIO_write(bp, "\n", 1) <= 0)
                    goto end;
            }
            p += len;
            if ((tag == V_ASN1_EOC) && (xclass == 0)) {
                ret = 2;        /* End of sequence */
                goto end;
            }
        }
        length -= len;
    }
    ret = 1;
 end:
    ASN1_OBJECT_free(o);
    ASN1_OCTET_STRING_free(os);
    ASN1_INTEGER_free(ai);
    ASN1_ENUMERATED_free(ae);
    *pp = p;
    return ret;
}

const char *ASN1_tag2str(int tag)
{
    static const char *const tag2str[] = {
        /* 0-4 */
        "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING",
        /* 5-9 */
        "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL",
        /* 10-13 */
        "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>",
        /* 15-17 */
        "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET",
        /* 18-20 */
        "NUMERICSTRING", "PRINTABLESTRING", "T61STRING",
        /* 21-24 */
        "VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME",
        /* 25-27 */
        "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",
        /* 28-30 */
        "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"
    };

    if ((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
        tag &= ~0x100;

    if (tag < 0 || tag > 30)
        return "(unknown)";
    return tag2str[tag];
}

Coverage Report

Created: 2025-06-13 06:56

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the Apache License 2.0 (the "License"). You may not use
5		* this file except in compliance with the License. You can obtain a copy
6		* in the file LICENSE in the source distribution or at
7		* https://www.openssl.org/source/license.html
8		*/
9
10		#include <stdio.h>
11		#include "internal/cryptlib.h"
12		#include <openssl/buffer.h>
13		#include <openssl/objects.h>
14		#include <openssl/asn1.h>
15
16		#ifndef ASN1_PARSE_MAXDEPTH
17	0	#define ASN1_PARSE_MAXDEPTH 128
18		#endif
19
20		static int asn1_parse2(BIO bp, const unsigned char *pp, long length,
21		int offset, int depth, int indent, int dump);
22		static int asn1_print_info(BIO *bp, long offset, int depth, int hl, long len,
23		int tag, int xclass, int constructed, int indent)
24	0	{
25	0	char str[128];
26	0	const char *p;
27	0	int pop_f_prefix = 0;
28	0	long saved_indent = -1;
29	0	int i = 0;
30	0	BIO *bio = NULL;
31
32	0	if (constructed & V_ASN1_CONSTRUCTED)
33	0	p = "cons: ";
34	0	else
35	0	p = "prim: ";
36	0	if (constructed != (V_ASN1_CONSTRUCTED \| 1)) {
37	0	if (BIO_snprintf(str, sizeof(str), "%5ld:d=%-2d hl=%ld l=%4ld %s",
38	0	offset, depth, (long)hl, len, p) <= 0)
39	0	goto err;
40	0	} else {
41	0	if (BIO_snprintf(str, sizeof(str), "%5ld:d=%-2d hl=%ld l=inf %s",
42	0	offset, depth, (long)hl, p) <= 0)
43	0	goto err;
44	0	}
45	0	if (bp != NULL) {
46	0	if (BIO_set_prefix(bp, str) <= 0) {
47	0	if ((bio = BIO_new(BIO_f_prefix())) == NULL
48	0	\|\| (bp = BIO_push(bio, bp)) == NULL)
49	0	goto err;
50	0	pop_f_prefix = 1;
51	0	}
52	0	saved_indent = BIO_get_indent(bp);
53	0	if (BIO_set_prefix(bp, str) <= 0 \|\| BIO_set_indent(bp, indent) <= 0)
54	0	goto err;
55	0	}
56
57		/*
58		* BIO_set_prefix made a copy of \|str\|, so we can safely use it for
59		* something else, ASN.1 tag printout.
60		*/
61	0	p = str;
62	0	if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)
63	0	BIO_snprintf(str, sizeof(str), "priv [ %d ] ", tag);
64	0	else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)
65	0	BIO_snprintf(str, sizeof(str), "cont [ %d ]", tag);
66	0	else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)
67	0	BIO_snprintf(str, sizeof(str), "appl [ %d ]", tag);
68	0	else if (tag > 30)
69	0	BIO_snprintf(str, sizeof(str), "<ASN1 %d>", tag);
70	0	else
71	0	p = ASN1_tag2str(tag);
72
73	0	i = (BIO_printf(bp, "%-18s", p) > 0);
74	0	err:
75	0	if (saved_indent >= 0)
76	0	BIO_set_indent(bp, saved_indent);
77	0	if (pop_f_prefix)
78	0	BIO_pop(bp);
79	0	BIO_free(bio);
80	0	return i;
81	0	}
82
83		int ASN1_parse(BIO bp, const unsigned char pp, long len, int indent)
84	0	{
85	0	return asn1_parse2(bp, &pp, len, 0, 0, indent, 0);
86	0	}
87
88		int ASN1_parse_dump(BIO bp, const unsigned char pp, long len, int indent,
89		int dump)
90	0	{
91	0	return asn1_parse2(bp, &pp, len, 0, 0, indent, dump);
92	0	}
93
94		static int asn1_parse2(BIO bp, const unsigned char *pp, long length,
95		int offset, int depth, int indent, int dump)
96	0	{
97	0	const unsigned char p, ep, tot, op, *opp;
98	0	long len;
99	0	int tag, xclass, ret = 0;
100	0	int nl, hl, j, r;
101	0	ASN1_OBJECT *o = NULL;
102	0	ASN1_OCTET_STRING *os = NULL;
103	0	ASN1_INTEGER *ai = NULL;
104	0	ASN1_ENUMERATED *ae = NULL;
105		/* ASN1_BMPSTRING bmp=NULL; /
106	0	int dump_indent, dump_cont = 0;
107
108	0	if (depth > ASN1_PARSE_MAXDEPTH) {
109	0	BIO_puts(bp, "BAD RECURSION DEPTH\n");
110	0	return 0;
111	0	}
112
113	0	dump_indent = 6; /* Because we know BIO_dump_indent() */
114	0	p = *pp;
115	0	tot = p + length;
116	0	while (length > 0) {
117	0	op = p;
118	0	j = ASN1_get_object(&p, &len, &tag, &xclass, length);
119	0	if (j & 0x80) {
120	0	BIO_puts(bp, "Error in encoding\n");
121	0	goto end;
122	0	}
123	0	hl = (p - op);
124	0	length -= hl;
125		/*
126		* if j == 0x21 it is a constructed indefinite length object
127		*/
128	0	if (!asn1_print_info(bp, (long)offset + (long)(op - *pp), depth,
129	0	hl, len, tag, xclass, j, (indent) ? depth : 0))
130	0	goto end;
131	0	if (j & V_ASN1_CONSTRUCTED) {
132	0	const unsigned char *sp = p;
133
134	0	ep = p + len;
135	0	if (BIO_write(bp, "\n", 1) <= 0)
136	0	goto end;
137	0	if (len > length) {
138	0	BIO_printf(bp, "length is greater than %ld\n", length);
139	0	goto end;
140	0	}
141	0	if ((j == 0x21) && (len == 0)) {
142	0	for (;;) {
143	0	r = asn1_parse2(bp, &p, (long)(tot - p),
144	0	offset + (p - *pp), depth + 1,
145	0	indent, dump);
146	0	if (r == 0)
147	0	goto end;
148	0	if ((r == 2) \|\| (p >= tot)) {
149	0	len = p - sp;
150	0	break;
151	0	}
152	0	}
153	0	} else {
154	0	long tmp = len;
155
156	0	while (p < ep) {
157	0	sp = p;
158	0	r = asn1_parse2(bp, &p, tmp,
159	0	offset + (p - *pp), depth + 1,
160	0	indent, dump);
161	0	if (r == 0)
162	0	goto end;
163	0	tmp -= p - sp;
164	0	}
165	0	}
166	0	} else if (xclass != 0) {
167	0	p += len;
168	0	if (BIO_write(bp, "\n", 1) <= 0)
169	0	goto end;
170	0	} else {
171	0	nl = 0;
172	0	if ((tag == V_ASN1_PRINTABLESTRING) \|\|
173	0	(tag == V_ASN1_T61STRING) \|\|
174	0	(tag == V_ASN1_IA5STRING) \|\|
175	0	(tag == V_ASN1_VISIBLESTRING) \|\|
176	0	(tag == V_ASN1_NUMERICSTRING) \|\|
177	0	(tag == V_ASN1_UTF8STRING) \|\|
178	0	(tag == V_ASN1_UTCTIME) \|\| (tag == V_ASN1_GENERALIZEDTIME)) {
179	0	if (BIO_write(bp, ":", 1) <= 0)
180	0	goto end;
181	0	if ((len > 0) && BIO_write(bp, (const char *)p, (int)len)
182	0	!= (int)len)
183	0	goto end;
184	0	} else if (tag == V_ASN1_OBJECT) {
185	0	opp = op;
186	0	if (d2i_ASN1_OBJECT(&o, &opp, len + hl) != NULL) {
187	0	if (BIO_write(bp, ":", 1) <= 0)
188	0	goto end;
189	0	i2a_ASN1_OBJECT(bp, o);
190	0	} else {
191	0	if (BIO_puts(bp, ":BAD OBJECT") <= 0)
192	0	goto end;
193	0	dump_cont = 1;
194	0	}
195	0	} else if (tag == V_ASN1_BOOLEAN) {
196	0	if (len != 1) {
197	0	if (BIO_puts(bp, ":BAD BOOLEAN") <= 0)
198	0	goto end;
199	0	dump_cont = 1;
200	0	}
201	0	if (len > 0)
202	0	BIO_printf(bp, ":%u", p[0]);
203	0	} else if (tag == V_ASN1_BMPSTRING) {
204		/* do the BMP thang */
205	0	} else if (tag == V_ASN1_OCTET_STRING) {
206	0	int i, printable = 1;
207
208	0	opp = op;
209	0	os = d2i_ASN1_OCTET_STRING(NULL, &opp, len + hl);
210	0	if (os != NULL && os->length > 0) {
211	0	opp = os->data;
212		/*
213		* testing whether the octet string is printable
214		*/
215	0	for (i = 0; i < os->length; i++) {
216	0	if (((opp[i] < ' ') &&
217	0	(opp[i] != '\n') &&
218	0	(opp[i] != '\r') &&
219	0	(opp[i] != '\t')) \|\| (opp[i] > '~')) {
220	0	printable = 0;
221	0	break;
222	0	}
223	0	}
224	0	if (printable)
225		/* printable string */
226	0	{
227	0	if (BIO_write(bp, ":", 1) <= 0)
228	0	goto end;
229	0	if (BIO_write(bp, (const char *)opp, os->length) <= 0)
230	0	goto end;
231	0	} else if (!dump)
232		/*
233		* not printable => print octet string as hex dump
234		*/
235	0	{
236	0	if (BIO_write(bp, "[HEX DUMP]:", 11) <= 0)
237	0	goto end;
238	0	for (i = 0; i < os->length; i++) {
239	0	if (BIO_printf(bp, "%02X", opp[i]) <= 0)
240	0	goto end;
241	0	}
242	0	} else
243		/* print the normal dump */
244	0	{
245	0	if (!nl) {
246	0	if (BIO_write(bp, "\n", 1) <= 0)
247	0	goto end;
248	0	}
249	0	if (BIO_dump_indent(bp,
250	0	(const char *)opp,
251	0	((dump == -1 \|\| dump >
252	0	os->
253	0	length) ? os->length : dump),
254	0	dump_indent) <= 0)
255	0	goto end;
256	0	nl = 1;
257	0	}
258	0	}
259	0	ASN1_OCTET_STRING_free(os);
260	0	os = NULL;
261	0	} else if (tag == V_ASN1_INTEGER) {
262	0	int i;
263
264	0	opp = op;
265	0	ai = d2i_ASN1_INTEGER(NULL, &opp, len + hl);
266	0	if (ai != NULL) {
267	0	if (BIO_write(bp, ":", 1) <= 0)
268	0	goto end;
269	0	if (ai->type == V_ASN1_NEG_INTEGER)
270	0	if (BIO_write(bp, "-", 1) <= 0)
271	0	goto end;
272	0	for (i = 0; i < ai->length; i++) {
273	0	if (BIO_printf(bp, "%02X", ai->data[i]) <= 0)
274	0	goto end;
275	0	}
276	0	if (ai->length == 0) {
277	0	if (BIO_write(bp, "00", 2) <= 0)
278	0	goto end;
279	0	}
280	0	} else {
281	0	if (BIO_puts(bp, ":BAD INTEGER") <= 0)
282	0	goto end;
283	0	dump_cont = 1;
284	0	}
285	0	ASN1_INTEGER_free(ai);
286	0	ai = NULL;
287	0	} else if (tag == V_ASN1_ENUMERATED) {
288	0	int i;
289
290	0	opp = op;
291	0	ae = d2i_ASN1_ENUMERATED(NULL, &opp, len + hl);
292	0	if (ae != NULL) {
293	0	if (BIO_write(bp, ":", 1) <= 0)
294	0	goto end;
295	0	if (ae->type == V_ASN1_NEG_ENUMERATED)
296	0	if (BIO_write(bp, "-", 1) <= 0)
297	0	goto end;
298	0	for (i = 0; i < ae->length; i++) {
299	0	if (BIO_printf(bp, "%02X", ae->data[i]) <= 0)
300	0	goto end;
301	0	}
302	0	if (ae->length == 0) {
303	0	if (BIO_write(bp, "00", 2) <= 0)
304	0	goto end;
305	0	}
306	0	} else {
307	0	if (BIO_puts(bp, ":BAD ENUMERATED") <= 0)
308	0	goto end;
309	0	dump_cont = 1;
310	0	}
311	0	ASN1_ENUMERATED_free(ae);
312	0	ae = NULL;
313	0	} else if (len > 0 && dump) {
314	0	if (!nl) {
315	0	if (BIO_write(bp, "\n", 1) <= 0)
316	0	goto end;
317	0	}
318	0	if (BIO_dump_indent(bp, (const char *)p,
319	0	((dump == -1 \|\| dump > len) ? len : dump),
320	0	dump_indent) <= 0)
321	0	goto end;
322	0	nl = 1;
323	0	}
324	0	if (dump_cont) {
325	0	int i;
326	0	const unsigned char *tmp = op + hl;
327	0	if (BIO_puts(bp, ":[") <= 0)
328	0	goto end;
329	0	for (i = 0; i < len; i++) {
330	0	if (BIO_printf(bp, "%02X", tmp[i]) <= 0)
331	0	goto end;
332	0	}
333	0	if (BIO_puts(bp, "]") <= 0)
334	0	goto end;
335	0	dump_cont = 0;
336	0	}
337
338	0	if (!nl) {
339	0	if (BIO_write(bp, "\n", 1) <= 0)
340	0	goto end;
341	0	}
342	0	p += len;
343	0	if ((tag == V_ASN1_EOC) && (xclass == 0)) {
344	0	ret = 2; /* End of sequence */
345	0	goto end;
346	0	}
347	0	}
348	0	length -= len;
349	0	}
350	0	ret = 1;
351	0	end:
352	0	ASN1_OBJECT_free(o);
353	0	ASN1_OCTET_STRING_free(os);
354	0	ASN1_INTEGER_free(ai);
355	0	ASN1_ENUMERATED_free(ae);
356	0	*pp = p;
357	0	return ret;
358	0	}
359
360		const char *ASN1_tag2str(int tag)
361	0	{
362	0	static const char *const tag2str[] = {
363		/* 0-4 */
364	0	"EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING",
365		/* 5-9 */
366	0	"NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL",
367		/* 10-13 */
368	0	"ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>",
369		/* 15-17 */
370	0	"<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET",
371		/* 18-20 */
372	0	"NUMERICSTRING", "PRINTABLESTRING", "T61STRING",
373		/* 21-24 */
374	0	"VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME",
375		/* 25-27 */
376	0	"GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",
377		/* 28-30 */
378	0	"UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"
379	0	};
380
381	0	if ((tag == V_ASN1_NEG_INTEGER) \|\| (tag == V_ASN1_NEG_ENUMERATED))
382	0	tag &= ~0x100;
383
384	0	if (tag < 0 \|\| tag > 30)
385	0	return "(unknown)";
386	0	return tag2str[tag];
387	0	}