/* $OpenBSD: tasn_prn.c,v 1.23 2022/11/26 16:08:50 tb Exp $ */ /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project 2000. */ /* ==================================================================== * Copyright (c) 2000,2005 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 #include #include #include #include #include #include #include "asn1_local.h" /* Print routines. */ /* ASN1_PCTX routines */ ASN1_PCTX default_pctx = { ASN1_PCTX_FLAGS_SHOW_ABSENT, /* flags */ 0, /* nm_flags */ 0, /* cert_flags */ 0, /* oid_flags */ 0 /* str_flags */ }; ASN1_PCTX * ASN1_PCTX_new(void) { ASN1_PCTX *p; if ((p = calloc(1, sizeof(ASN1_PCTX))) == NULL) { ASN1error(ERR_R_MALLOC_FAILURE); return NULL; } return p; } void ASN1_PCTX_free(ASN1_PCTX *p) { free(p); } unsigned long ASN1_PCTX_get_flags(const ASN1_PCTX *p) { return p->flags; } void ASN1_PCTX_set_flags(ASN1_PCTX *p, unsigned long flags) { p->flags = flags; } unsigned long ASN1_PCTX_get_nm_flags(const ASN1_PCTX *p) { return p->nm_flags; } void ASN1_PCTX_set_nm_flags(ASN1_PCTX *p, unsigned long flags) { p->nm_flags = flags; } unsigned long ASN1_PCTX_get_cert_flags(const ASN1_PCTX *p) { return p->cert_flags; } void ASN1_PCTX_set_cert_flags(ASN1_PCTX *p, unsigned long flags) { p->cert_flags = flags; } unsigned long ASN1_PCTX_get_oid_flags(const ASN1_PCTX *p) { return p->oid_flags; } void ASN1_PCTX_set_oid_flags(ASN1_PCTX *p, unsigned long flags) { p->oid_flags = flags; } unsigned long ASN1_PCTX_get_str_flags(const ASN1_PCTX *p) { return p->str_flags; } void ASN1_PCTX_set_str_flags(ASN1_PCTX *p, unsigned long flags) { p->str_flags = flags; } /* Main print routines */ static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent, const ASN1_ITEM *it, const char *fname, const char *sname, int nohdr, const ASN1_PCTX *pctx); int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent, const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx); static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld, const ASN1_ITEM *it, int indent, const char *fname, const char *sname, const ASN1_PCTX *pctx); static int asn1_print_fsname(BIO *out, int indent, const char *fname, const char *sname, const ASN1_PCTX *pctx); int ASN1_item_print(BIO *out, ASN1_VALUE *ifld, int indent, const ASN1_ITEM *it, const ASN1_PCTX *pctx) { const char *sname; if (pctx == NULL) pctx = &default_pctx; if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME) sname = NULL; else sname = it->sname; return asn1_item_print_ctx(out, &ifld, indent, it, NULL, sname, 0, pctx); } static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent, const ASN1_ITEM *it, const char *fname, const char *sname, int nohdr, const ASN1_PCTX *pctx) { const ASN1_TEMPLATE *tt; const ASN1_EXTERN_FUNCS *ef; ASN1_VALUE **tmpfld; const ASN1_AUX *aux = it->funcs; ASN1_aux_cb *asn1_cb; ASN1_PRINT_ARG parg; int i; if (aux && aux->asn1_cb) { parg.out = out; parg.indent = indent; parg.pctx = pctx; asn1_cb = aux->asn1_cb; } else asn1_cb = NULL; if ((it->itype != ASN1_ITYPE_PRIMITIVE || it->utype != V_ASN1_BOOLEAN) && *fld == NULL) { if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_ABSENT) { if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx)) return 0; if (BIO_puts(out, "\n") <= 0) return 0; } return 1; } switch (it->itype) { case ASN1_ITYPE_PRIMITIVE: if (it->templates) { if (!asn1_template_print_ctx(out, fld, indent, it->templates, pctx)) return 0; } /* fall thru */ case ASN1_ITYPE_MSTRING: if (!asn1_primitive_print(out, fld, it, indent, fname, sname, pctx)) return 0; break; case ASN1_ITYPE_EXTERN: if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx)) return 0; /* Use new style print routine if possible */ ef = it->funcs; if (ef && ef->asn1_ex_print) { i = ef->asn1_ex_print(out, fld, indent, "", pctx); if (!i) return 0; if ((i == 2) && (BIO_puts(out, "\n") <= 0)) return 0; return 1; } else if (sname && BIO_printf(out, ":EXTERNAL TYPE %s\n", sname) <= 0) return 0; break; case ASN1_ITYPE_CHOICE: /* CHOICE type, get selector */ i = asn1_get_choice_selector(fld, it); /* This should never happen... */ if ((i < 0) || (i >= it->tcount)) { if (BIO_printf(out, "ERROR: selector [%d] invalid\n", i) <= 0) return 0; return 1; } tt = it->templates + i; tmpfld = asn1_get_field_ptr(fld, tt); if (!asn1_template_print_ctx(out, tmpfld, indent, tt, pctx)) return 0; break; case ASN1_ITYPE_SEQUENCE: case ASN1_ITYPE_NDEF_SEQUENCE: if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx)) return 0; if (fname || sname) { if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) { if (BIO_puts(out, " {\n") <= 0) return 0; } else { if (BIO_puts(out, "\n") <= 0) return 0; } } if (asn1_cb) { i = asn1_cb(ASN1_OP_PRINT_PRE, fld, it, &parg); if (i == 0) return 0; if (i == 2) return 1; } /* Print each field entry */ for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) { const ASN1_TEMPLATE *seqtt; seqtt = asn1_do_adb(fld, tt, 1); if (seqtt == NULL) return 0; tmpfld = asn1_get_field_ptr(fld, seqtt); if (!asn1_template_print_ctx(out, tmpfld, indent + 2, seqtt, pctx)) return 0; } if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) { if (BIO_printf(out, "%*s}\n", indent, "") < 0) return 0; } if (asn1_cb) { i = asn1_cb(ASN1_OP_PRINT_POST, fld, it, &parg); if (i == 0) return 0; } break; default: BIO_printf(out, "Unprocessed type %d\n", it->itype); return 0; } return 1; } int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent, const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx) { int i, flags; const char *sname, *fname; flags = tt->flags; if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME) sname = tt->item->sname; else sname = NULL; if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME) fname = NULL; else fname = tt->field_name; if (flags & ASN1_TFLG_SK_MASK) { char *tname; ASN1_VALUE *skitem; STACK_OF(ASN1_VALUE) *stack; /* SET OF, SEQUENCE OF */ if (fname) { if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SSOF) { if (flags & ASN1_TFLG_SET_OF) tname = "SET"; else tname = "SEQUENCE"; if (BIO_printf(out, "%*s%s OF %s {\n", indent, "", tname, tt->field_name) <= 0) return 0; } else if (BIO_printf(out, "%*s%s:\n", indent, "", fname) <= 0) return 0; } stack = (STACK_OF(ASN1_VALUE) *)*fld; for (i = 0; i < sk_ASN1_VALUE_num(stack); i++) { if ((i > 0) && (BIO_puts(out, "\n") <= 0)) return 0; skitem = sk_ASN1_VALUE_value(stack, i); if (!asn1_item_print_ctx(out, &skitem, indent + 2, tt->item, NULL, NULL, 1, pctx)) return 0; } if (!i && BIO_printf(out, "%*s\n", indent + 2, "") <= 0) return 0; if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) { if (BIO_printf(out, "%*s}\n", indent, "") <= 0) return 0; } return 1; } return asn1_item_print_ctx(out, fld, indent, tt->item, fname, sname, 0, pctx); } static int asn1_print_fsname(BIO *out, int indent, const char *fname, const char *sname, const ASN1_PCTX *pctx) { static char spaces[] = " "; const int nspaces = sizeof(spaces) - 1; while (indent > nspaces) { if (BIO_write(out, spaces, nspaces) != nspaces) return 0; indent -= nspaces; } if (BIO_write(out, spaces, indent) != indent) return 0; if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME) sname = NULL; if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME) fname = NULL; if (!sname && !fname) return 1; if (fname) { if (BIO_puts(out, fname) <= 0) return 0; } if (sname) { if (fname) { if (BIO_printf(out, " (%s)", sname) <= 0) return 0; } else { if (BIO_puts(out, sname) <= 0) return 0; } } if (BIO_write(out, ": ", 2) != 2) return 0; return 1; } static int asn1_print_boolean_ctx(BIO *out, int boolval, const ASN1_PCTX *pctx) { const char *str; switch (boolval) { case -1: str = "BOOL ABSENT"; break; case 0: str = "FALSE"; break; default: str = "TRUE"; break; } if (BIO_puts(out, str) <= 0) return 0; return 1; } static int asn1_print_integer_ctx(BIO *out, ASN1_INTEGER *str, const ASN1_PCTX *pctx) { char *s; int ret = 1; if ((s = i2s_ASN1_INTEGER(NULL, str)) == NULL) return 0; if (BIO_puts(out, s) <= 0) ret = 0; free(s); return ret; } static int asn1_print_oid_ctx(BIO *out, const ASN1_OBJECT *oid, const ASN1_PCTX *pctx) { char objbuf[80]; const char *ln; ln = OBJ_nid2ln(OBJ_obj2nid(oid)); if (!ln) ln = ""; OBJ_obj2txt(objbuf, sizeof objbuf, oid, 1); if (BIO_printf(out, "%s (%s)", ln, objbuf) <= 0) return 0; return 1; } static int asn1_print_obstring_ctx(BIO *out, ASN1_STRING *str, int indent, const ASN1_PCTX *pctx) { if (str->type == V_ASN1_BIT_STRING) { if (BIO_printf(out, " (%ld unused bits)\n", str->flags & 0x7) <= 0) return 0; } else if (BIO_puts(out, "\n") <= 0) return 0; if ((str->length > 0) && BIO_dump_indent(out, (char *)str->data, str->length, indent + 2) <= 0) return 0; return 1; } static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld, const ASN1_ITEM *it, int indent, const char *fname, const char *sname, const ASN1_PCTX *pctx) { long utype; ASN1_STRING *str; int ret = 1, needlf = 1; const char *pname; if (!asn1_print_fsname(out, indent, fname, sname, pctx)) return 0; if (it != NULL && it->funcs != NULL) { const ASN1_PRIMITIVE_FUNCS *pf = it->funcs; if (pf->prim_print == NULL) return 0; return pf->prim_print(out, fld, it, indent, pctx); } if (it->itype == ASN1_ITYPE_MSTRING) { str = (ASN1_STRING *)*fld; utype = str->type & ~V_ASN1_NEG; } else { utype = it->utype; if (utype == V_ASN1_BOOLEAN) str = NULL; else str = (ASN1_STRING *)*fld; } if (utype == V_ASN1_ANY) { ASN1_TYPE *atype = (ASN1_TYPE *)*fld; utype = atype->type; fld = &atype->value.asn1_value; str = (ASN1_STRING *)*fld; if (pctx->flags & ASN1_PCTX_FLAGS_NO_ANY_TYPE) pname = NULL; else pname = ASN1_tag2str(utype); } else { if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_TYPE) pname = ASN1_tag2str(utype); else pname = NULL; } if (utype == V_ASN1_NULL) { if (BIO_puts(out, "NULL\n") <= 0) return 0; return 1; } if (pname) { if (BIO_puts(out, pname) <= 0) return 0; if (BIO_puts(out, ":") <= 0) return 0; } switch (utype) { case V_ASN1_BOOLEAN: { int boolval = *(int *)fld; if (boolval == -1) boolval = it->size; ret = asn1_print_boolean_ctx(out, boolval, pctx); } break; case V_ASN1_INTEGER: case V_ASN1_ENUMERATED: ret = asn1_print_integer_ctx(out, str, pctx); break; case V_ASN1_UTCTIME: ret = ASN1_UTCTIME_print(out, str); break; case V_ASN1_GENERALIZEDTIME: ret = ASN1_GENERALIZEDTIME_print(out, str); break; case V_ASN1_OBJECT: ret = asn1_print_oid_ctx(out, (const ASN1_OBJECT *)*fld, pctx); break; case V_ASN1_OCTET_STRING: case V_ASN1_BIT_STRING: ret = asn1_print_obstring_ctx(out, str, indent, pctx); needlf = 0; break; case V_ASN1_SEQUENCE: case V_ASN1_SET: case V_ASN1_OTHER: if (BIO_puts(out, "\n") <= 0) return 0; if (ASN1_parse_dump(out, str->data, str->length, indent, 0) <= 0) ret = 0; needlf = 0; break; default: ret = ASN1_STRING_print_ex(out, str, pctx->str_flags); } if (!ret) return 0; if (needlf && BIO_puts(out, "\n") <= 0) return 0; return 1; }