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openssl/crypto/x509v3/v3_crld.c

 /* v3_crld.c */
 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project 1999.
  */
 /* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2008 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
@@ skipping 39 matching lines @@
  *
  */
 
 #include <stdio.h>
 #include "cryptlib.h"
 #include <openssl/conf.h>
 #include <openssl/asn1.h>
 #include <openssl/asn1t.h>
 #include <openssl/x509v3.h>
 
-static STACK_OF(CONF_VALUE) *i2v_crld(X509V3_EXT_METHOD *method,
-                STACK_OF(DIST_POINT) *crld, STACK_OF(CONF_VALUE) *extlist);
-static STACK_OF(DIST_POINT) *v2i_crld(X509V3_EXT_METHOD *method,
-                                X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
-
-const X509V3_EXT_METHOD v3_crld = {
-NID_crl_distribution_points, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(CRL_DIST_POINTS),
-0,0,0,0,
-0,0,
-(X509V3_EXT_I2V)i2v_crld,
-(X509V3_EXT_V2I)v2i_crld,
-0,0,
-NULL
+static void *v2i_crld(const X509V3_EXT_METHOD *method,
+                      X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
+static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
+                     int indent);
+
+const X509V3_EXT_METHOD v3_crld =
+        {
+        NID_crl_distribution_points, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
+        0,0,0,0,
+        0,0,
+        0,
+        v2i_crld,
+        i2r_crldp,0,
+        NULL
+        };
+
+const X509V3_EXT_METHOD v3_freshest_crl =
+        {
+        NID_freshest_crl, 0, ASN1_ITEM_ref(CRL_DIST_POINTS),
+        0,0,0,0,
+        0,0,
+        0,
+        v2i_crld,
+        i2r_crldp,0,
+        NULL
+        };
+
+static STACK_OF(GENERAL_NAME) *gnames_from_sectname(X509V3_CTX *ctx, char *sect)
+        {
+        STACK_OF(CONF_VALUE) *gnsect;
+        STACK_OF(GENERAL_NAME) *gens;
+        if (*sect == '@')
+                gnsect = X509V3_get_section(ctx, sect + 1);
+        else
+                gnsect = X509V3_parse_list(sect);
+        if (!gnsect)
+                {
+                X509V3err(X509V3_F_GNAMES_FROM_SECTNAME,
+                                                X509V3_R_SECTION_NOT_FOUND);
+                return NULL;
+                }
+        gens = v2i_GENERAL_NAMES(NULL, ctx, gnsect);
+        if (*sect == '@')
+                X509V3_section_free(ctx, gnsect);
+        else
+                sk_CONF_VALUE_pop_free(gnsect, X509V3_conf_free);
+        return gens;
+        }
+
+static int set_dist_point_name(DIST_POINT_NAME **pdp, X509V3_CTX *ctx,
+                                                        CONF_VALUE *cnf)
+        {
+        STACK_OF(GENERAL_NAME) *fnm = NULL;
+        STACK_OF(X509_NAME_ENTRY) *rnm = NULL;
+        if (!strncmp(cnf->name, "fullname", 9))
+                {
+                fnm = gnames_from_sectname(ctx, cnf->value);
+                if (!fnm)
+                        goto err;
+                }
+        else if (!strcmp(cnf->name, "relativename"))
+                {
+                int ret;
+                STACK_OF(CONF_VALUE) *dnsect;
+                X509_NAME *nm;
+                nm = X509_NAME_new();
+                if (!nm)
+                        return -1;
+                dnsect = X509V3_get_section(ctx, cnf->value);
+                if (!dnsect)
+                        {
+                        X509V3err(X509V3_F_SET_DIST_POINT_NAME,
+                                                X509V3_R_SECTION_NOT_FOUND);
+                        return -1;
+                        }
+                ret = X509V3_NAME_from_section(nm, dnsect, MBSTRING_ASC);
+                X509V3_section_free(ctx, dnsect);
+                rnm = nm->entries;
+                nm->entries = NULL;
+                X509_NAME_free(nm);
+                if (!ret || sk_X509_NAME_ENTRY_num(rnm) <= 0)
+                        goto err;
+                /* Since its a name fragment can't have more than one
+                 * RDNSequence
+                 */
+                if (sk_X509_NAME_ENTRY_value(rnm,
+                                sk_X509_NAME_ENTRY_num(rnm) - 1)->set)
+                        {
+                        X509V3err(X509V3_F_SET_DIST_POINT_NAME,
+                                                X509V3_R_INVALID_MULTIPLE_RDNS);
+                        goto err;
+                        }
+                }
+        else
+                return 0;
+
+        if (*pdp)
+                {
+                X509V3err(X509V3_F_SET_DIST_POINT_NAME,
+                                                X509V3_R_DISTPOINT_ALREADY_SET);
+                goto err;
+                }
+
+        *pdp = DIST_POINT_NAME_new();
+        if (!*pdp)
+                goto err;
+        if (fnm)
+                {
+                (*pdp)->type = 0;
+                (*pdp)->name.fullname = fnm;
+                }
+        else
+                {
+                (*pdp)->type = 1;
+                (*pdp)->name.relativename = rnm;
+                }
+
+        return 1;
+                
+        err:
+        if (fnm)
+                sk_GENERAL_NAME_pop_free(fnm, GENERAL_NAME_free);
+        if (rnm)
+                sk_X509_NAME_ENTRY_pop_free(rnm, X509_NAME_ENTRY_free);
+        return -1;
+        }
+
+static const BIT_STRING_BITNAME reason_flags[] = {
+{0, "Unused", "unused"},
+{1, "Key Compromise", "keyCompromise"},
+{2, "CA Compromise", "CACompromise"},
+{3, "Affiliation Changed", "affiliationChanged"},
+{4, "Superseded", "superseded"},
+{5, "Cessation Of Operation", "cessationOfOperation"},
+{6, "Certificate Hold", "certificateHold"},
+{7, "Privilege Withdrawn", "privilegeWithdrawn"},
+{8, "AA Compromise", "AACompromise"},
+{-1, NULL, NULL}
 };
 
-static STACK_OF(CONF_VALUE) *i2v_crld(X509V3_EXT_METHOD *method,
-                        STACK_OF(DIST_POINT) *crld, STACK_OF(CONF_VALUE) *exts)
-{
-        DIST_POINT *point;
+static int set_reasons(ASN1_BIT_STRING **preas, char *value)
+        {
+        STACK_OF(CONF_VALUE) *rsk = NULL;
+        const BIT_STRING_BITNAME *pbn;
+        const char *bnam;
+        int i, ret = 0;
+        rsk = X509V3_parse_list(value);
+        if (!rsk)
+                return 0;
+        if (*preas)
+                return 0;
+        for (i = 0; i < sk_CONF_VALUE_num(rsk); i++)
+                {
+                bnam = sk_CONF_VALUE_value(rsk, i)->name;
+                if (!*preas)
+                        {
+                        *preas = ASN1_BIT_STRING_new();
+                        if (!*preas)
+                                goto err;
+                        }
+                for (pbn = reason_flags; pbn->lname; pbn++)
+                        {
+                        if (!strcmp(pbn->sname, bnam))
+                                {
+                                if (!ASN1_BIT_STRING_set_bit(*preas,
+                                                        pbn->bitnum, 1))
+                                        goto err;
+                                break;
+                                }
+                        }
+                if (!pbn->lname)
+                        goto err;
+                }
+        ret = 1;
+
+        err:
+        sk_CONF_VALUE_pop_free(rsk, X509V3_conf_free);
+        return ret;
+        }
+
+static int print_reasons(BIO *out, const char *rname,
+                        ASN1_BIT_STRING *rflags, int indent)
+        {
+        int first = 1;
+        const BIT_STRING_BITNAME *pbn;
+        BIO_printf(out, "%*s%s:\n%*s", indent, "", rname, indent + 2, "");
+        for (pbn = reason_flags; pbn->lname; pbn++)
+                {
+                if (ASN1_BIT_STRING_get_bit(rflags, pbn->bitnum))
+                        {
+                        if (first)
+                                first = 0;
+                        else
+                                BIO_puts(out, ", ");
+                        BIO_puts(out, pbn->lname);
+                        }
+                }
+        if (first)
+                BIO_puts(out, "<EMPTY>\n");
+        else
+                BIO_puts(out, "\n");
+        return 1;
+        }
+
+static DIST_POINT *crldp_from_section(X509V3_CTX *ctx,
+                                                STACK_OF(CONF_VALUE) *nval)
+        {
         int i;
-        for(i = 0; i < sk_DIST_POINT_num(crld); i++) {
-                point = sk_DIST_POINT_value(crld, i);
-                if(point->distpoint) {
-                        if(point->distpoint->type == 0)
-                                exts = i2v_GENERAL_NAMES(NULL,
-                                         point->distpoint->name.fullname, exts);
-                        else X509V3_add_value("RelativeName","<UNSUPPORTED>", &exts);
-                }
-                if(point->reasons) 
-                        X509V3_add_value("reasons","<UNSUPPORTED>", &exts);
-                if(point->CRLissuer)
-                        X509V3_add_value("CRLissuer","<UNSUPPORTED>", &exts);
-        }
-        return exts;
-}
-
-static STACK_OF(DIST_POINT) *v2i_crld(X509V3_EXT_METHOD *method,
-                                X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
-{
+        CONF_VALUE *cnf;
+        DIST_POINT *point = NULL;
+        point = DIST_POINT_new();
+        if (!point)
+                goto err;
+        for(i = 0; i < sk_CONF_VALUE_num(nval); i++)
+                {
+                int ret;
+                cnf = sk_CONF_VALUE_value(nval, i);
+                ret = set_dist_point_name(&point->distpoint, ctx, cnf);
+                if (ret > 0)
+                        continue;
+                if (ret < 0)
+                        goto err;
+                if (!strcmp(cnf->name, "reasons"))
+                        {
+                        if (!set_reasons(&point->reasons, cnf->value))
+                                goto err;
+                        }
+                else if (!strcmp(cnf->name, "CRLissuer"))
+                        {
+                        point->CRLissuer =
+                                gnames_from_sectname(ctx, cnf->value);
+                        if (!point->CRLissuer)
+                                goto err;
+                        }
+                }
+
+        return point;
+                        
+
+        err:
+        if (point)
+                DIST_POINT_free(point);
+        return NULL;
+        }
+
+static void *v2i_crld(const X509V3_EXT_METHOD *method,
+                      X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
+        {
         STACK_OF(DIST_POINT) *crld = NULL;
         GENERAL_NAMES *gens = NULL;
         GENERAL_NAME *gen = NULL;
         CONF_VALUE *cnf;
         int i;
         if(!(crld = sk_DIST_POINT_new_null())) goto merr;
         for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
                 DIST_POINT *point;
                 cnf = sk_CONF_VALUE_value(nval, i);
-                if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err; 
-                if(!(gens = GENERAL_NAMES_new())) goto merr;
-                if(!sk_GENERAL_NAME_push(gens, gen)) goto merr;
-                gen = NULL;
-                if(!(point = DIST_POINT_new())) goto merr;
-                if(!sk_DIST_POINT_push(crld, point)) {
-                        DIST_POINT_free(point);
-                        goto merr;
-                }
-                if(!(point->distpoint = DIST_POINT_NAME_new())) goto merr;
-                point->distpoint->name.fullname = gens;
-                point->distpoint->type = 0;
-                gens = NULL;
+                if (!cnf->value)
+                        {
+                        STACK_OF(CONF_VALUE) *dpsect;
+                        dpsect = X509V3_get_section(ctx, cnf->name);
+                        if (!dpsect)
+                                goto err;
+                        point = crldp_from_section(ctx, dpsect);
+                        X509V3_section_free(ctx, dpsect);
+                        if (!point)
+                                goto err;
+                        if(!sk_DIST_POINT_push(crld, point))
+                                {
+                                DIST_POINT_free(point);
+                                goto merr;
+                                }
+                        }
+                else
+                        {
+                        if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
+                                goto err; 
+                        if(!(gens = GENERAL_NAMES_new()))
+                                goto merr;
+                        if(!sk_GENERAL_NAME_push(gens, gen))
+                                goto merr;
+                        gen = NULL;
+                        if(!(point = DIST_POINT_new()))
+                                goto merr;
+                        if(!sk_DIST_POINT_push(crld, point))
+                                {
+                                DIST_POINT_free(point);
+                                goto merr;
+                                }
+                        if(!(point->distpoint = DIST_POINT_NAME_new()))
+                                goto merr;
+                        point->distpoint->name.fullname = gens;
+                        point->distpoint->type = 0;
+                        gens = NULL;
+                        }
         }
         return crld;
 
         merr:
         X509V3err(X509V3_F_V2I_CRLD,ERR_R_MALLOC_FAILURE);
         err:
         GENERAL_NAME_free(gen);
         GENERAL_NAMES_free(gens);
         sk_DIST_POINT_pop_free(crld, DIST_POINT_free);
         return NULL;
 }
 
 IMPLEMENT_STACK_OF(DIST_POINT)
 IMPLEMENT_ASN1_SET_OF(DIST_POINT)
 
+static int dpn_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                                                                void *exarg)
+        {
+        DIST_POINT_NAME *dpn = (DIST_POINT_NAME *)*pval;
 
-ASN1_CHOICE(DIST_POINT_NAME) = {
+        switch(operation)
+                {
+                case ASN1_OP_NEW_POST:
+                dpn->dpname = NULL;
+                break;
+
+                case ASN1_OP_FREE_POST:
+                if (dpn->dpname)
+                        X509_NAME_free(dpn->dpname);
+                break;
+                }
+        return 1;
+        }
+
+
+ASN1_CHOICE_cb(DIST_POINT_NAME, dpn_cb) = {
         ASN1_IMP_SEQUENCE_OF(DIST_POINT_NAME, name.fullname, GENERAL_NAME, 0),
         ASN1_IMP_SET_OF(DIST_POINT_NAME, name.relativename, X509_NAME_ENTRY, 1)
-} ASN1_CHOICE_END(DIST_POINT_NAME)
+} ASN1_CHOICE_END_cb(DIST_POINT_NAME, DIST_POINT_NAME, type)
+
 
 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT_NAME)
 
 ASN1_SEQUENCE(DIST_POINT) = {
         ASN1_EXP_OPT(DIST_POINT, distpoint, DIST_POINT_NAME, 0),
         ASN1_IMP_OPT(DIST_POINT, reasons, ASN1_BIT_STRING, 1),
         ASN1_IMP_SEQUENCE_OF_OPT(DIST_POINT, CRLissuer, GENERAL_NAME, 2)
 } ASN1_SEQUENCE_END(DIST_POINT)
 
 IMPLEMENT_ASN1_FUNCTIONS(DIST_POINT)
 
 ASN1_ITEM_TEMPLATE(CRL_DIST_POINTS) = 
         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, CRLDistributionPoints, DIST_POINT)
 ASN1_ITEM_TEMPLATE_END(CRL_DIST_POINTS)
 
 IMPLEMENT_ASN1_FUNCTIONS(CRL_DIST_POINTS)
+
+ASN1_SEQUENCE(ISSUING_DIST_POINT) = {
+        ASN1_EXP_OPT(ISSUING_DIST_POINT, distpoint, DIST_POINT_NAME, 0),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyuser, ASN1_FBOOLEAN, 1),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyCA, ASN1_FBOOLEAN, 2),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlysomereasons, ASN1_BIT_STRING, 3),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, indirectCRL, ASN1_FBOOLEAN, 4),
+        ASN1_IMP_OPT(ISSUING_DIST_POINT, onlyattr, ASN1_FBOOLEAN, 5)
+} ASN1_SEQUENCE_END(ISSUING_DIST_POINT)
+
+IMPLEMENT_ASN1_FUNCTIONS(ISSUING_DIST_POINT)
+
+static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
+                   int indent);
+static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                     STACK_OF(CONF_VALUE) *nval);
+
+const X509V3_EXT_METHOD v3_idp =
+        {
+        NID_issuing_distribution_point, X509V3_EXT_MULTILINE,
+        ASN1_ITEM_ref(ISSUING_DIST_POINT),
+        0,0,0,0,
+        0,0,
+        0,
+        v2i_idp,
+        i2r_idp,0,
+        NULL
+        };
+
+static void *v2i_idp(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
+                     STACK_OF(CONF_VALUE) *nval)
+        {
+        ISSUING_DIST_POINT *idp = NULL;
+        CONF_VALUE *cnf;
+        char *name, *val;
+        int i, ret;
+        idp = ISSUING_DIST_POINT_new();
+        if (!idp)
+                goto merr;
+        for(i = 0; i < sk_CONF_VALUE_num(nval); i++)
+                {
+                cnf = sk_CONF_VALUE_value(nval, i);
+                name = cnf->name;
+                val = cnf->value;
+                ret = set_dist_point_name(&idp->distpoint, ctx, cnf);
+                if (ret > 0)
+                        continue;
+                if (ret < 0)
+                        goto err;
+                if (!strcmp(name, "onlyuser"))
+                        {
+                        if (!X509V3_get_value_bool(cnf, &idp->onlyuser))
+                                goto err;
+                        }
+                else if (!strcmp(name, "onlyCA"))
+                        {
+                        if (!X509V3_get_value_bool(cnf, &idp->onlyCA))
+                                goto err;
+                        }
+                else if (!strcmp(name, "onlyAA"))
+                        {
+                        if (!X509V3_get_value_bool(cnf, &idp->onlyattr))
+                                goto err;
+                        }
+                else if (!strcmp(name, "indirectCRL"))
+                        {
+                        if (!X509V3_get_value_bool(cnf, &idp->indirectCRL))
+                                goto err;
+                        }
+                else if (!strcmp(name, "onlysomereasons"))
+                        {
+                        if (!set_reasons(&idp->onlysomereasons, val))
+                                goto err;
+                        }
+                else
+                        {
+                        X509V3err(X509V3_F_V2I_IDP, X509V3_R_INVALID_NAME);
+                        X509V3_conf_err(cnf);
+                        goto err;
+                        }
+                }
+        return idp;
+
+        merr:
+        X509V3err(X509V3_F_V2I_IDP,ERR_R_MALLOC_FAILURE);
+        err:
+        ISSUING_DIST_POINT_free(idp);
+        return NULL;
+        }
+
+static int print_gens(BIO *out, STACK_OF(GENERAL_NAME) *gens, int indent)
+        {
+        int i;
+        for (i = 0; i < sk_GENERAL_NAME_num(gens); i++)
+                {
+                BIO_printf(out, "%*s", indent + 2, "");
+                GENERAL_NAME_print(out, sk_GENERAL_NAME_value(gens, i));
+                BIO_puts(out, "\n");
+                }
+        return 1;
+        }
+
+static int print_distpoint(BIO *out, DIST_POINT_NAME *dpn, int indent)
+        {
+        if (dpn->type == 0)
+                {
+                BIO_printf(out, "%*sFull Name:\n", indent, "");
+                print_gens(out, dpn->name.fullname, indent);
+                }
+        else
+                {
+                X509_NAME ntmp;
+                ntmp.entries = dpn->name.relativename;
+                BIO_printf(out, "%*sRelative Name:\n%*s",
+                                                indent, "", indent + 2, "");
+                X509_NAME_print_ex(out, &ntmp, 0, XN_FLAG_ONELINE);
+                BIO_puts(out, "\n");
+                }
+        return 1;
+        }
+
+static int i2r_idp(const X509V3_EXT_METHOD *method, void *pidp, BIO *out,
+                   int indent)
+        {
+        ISSUING_DIST_POINT *idp = pidp;
+        if (idp->distpoint)
+                print_distpoint(out, idp->distpoint, indent);
+        if (idp->onlyuser > 0)
+                BIO_printf(out, "%*sOnly User Certificates\n", indent, "");
+        if (idp->onlyCA > 0)
+                BIO_printf(out, "%*sOnly CA Certificates\n", indent, "");
+        if (idp->indirectCRL > 0)
+                BIO_printf(out, "%*sIndirect CRL\n", indent, "");
+        if (idp->onlysomereasons)
+                print_reasons(out, "Only Some Reasons", 
+                                idp->onlysomereasons, indent);
+        if (idp->onlyattr > 0)
+                BIO_printf(out, "%*sOnly Attribute Certificates\n", indent, "");
+        if (!idp->distpoint && (idp->onlyuser <= 0) && (idp->onlyCA <= 0)
+                && (idp->indirectCRL <= 0) && !idp->onlysomereasons
+                && (idp->onlyattr <= 0))
+                BIO_printf(out, "%*s<EMPTY>\n", indent, "");
+                
+        return 1;
+        }
+
+static int i2r_crldp(const X509V3_EXT_METHOD *method, void *pcrldp, BIO *out,
+                     int indent)
+        {
+        STACK_OF(DIST_POINT) *crld = pcrldp;
+        DIST_POINT *point;
+        int i;
+        for(i = 0; i < sk_DIST_POINT_num(crld); i++)
+                {
+                BIO_puts(out, "\n");
+                point = sk_DIST_POINT_value(crld, i);
+                if(point->distpoint)
+                        print_distpoint(out, point->distpoint, indent);
+                if(point->reasons) 
+                        print_reasons(out, "Reasons", point->reasons,
+                                                                indent);
+                if(point->CRLissuer)
+                        {
+                        BIO_printf(out, "%*sCRL Issuer:\n", indent, "");
+                        print_gens(out, point->CRLissuer, indent);
+                        }
+                }
+        return 1;
+        }
+
+int DIST_POINT_set_dpname(DIST_POINT_NAME *dpn, X509_NAME *iname)
+        {
+        int i;
+        STACK_OF(X509_NAME_ENTRY) *frag;
+        X509_NAME_ENTRY *ne;
+        if (!dpn || (dpn->type != 1))
+                return 1;
+        frag = dpn->name.relativename;
+        dpn->dpname = X509_NAME_dup(iname);
+        if (!dpn->dpname)
+                return 0;
+        for (i = 0; i < sk_X509_NAME_ENTRY_num(frag); i++)
+                {
+                ne = sk_X509_NAME_ENTRY_value(frag, i);
+                if (!X509_NAME_add_entry(dpn->dpname, ne, -1, i ? 0 : 1))
+                        {
+                        X509_NAME_free(dpn->dpname);
+                        dpn->dpname = NULL;
+                        return 0;
+                        }
+                }
+        /* generate cached encoding of name */
+        if (i2d_X509_NAME(dpn->dpname, NULL) < 0)
+                {
+                X509_NAME_free(dpn->dpname);
+                dpn->dpname = NULL;
+                return 0;
+                }
+        return 1;
+        }