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34 #include <krb5_locl.h>
36 RCSID("$Id: build_auth.c 17033 2006-04-10 08:53:21Z lha $");
38 static krb5_error_code
39 make_etypelist(krb5_context context,
40 krb5_authdata **auth_data)
49 ret = krb5_init_etype(context, &etypes.len, &etypes.val, NULL);
53 ASN1_MALLOC_ENCODE(EtypeList, buf, buf_size, &etypes, &len, ret);
55 free_EtypeList(&etypes);
59 krb5_abortx(context, "internal error in ASN.1 encoder");
60 free_EtypeList(&etypes);
65 krb5_set_error_string(context, "malloc: out of memory");
69 ad.val[0].ad_type = KRB5_AUTHDATA_GSS_API_ETYPE_NEGOTIATION;
70 ad.val[0].ad_data.length = len;
71 ad.val[0].ad_data.data = buf;
73 ASN1_MALLOC_ENCODE(AD_IF_RELEVANT, buf, buf_size, &ad, &len, ret);
75 free_AuthorizationData(&ad);
79 krb5_abortx(context, "internal error in ASN.1 encoder");
80 free_AuthorizationData(&ad);
83 if (*auth_data == NULL) {
84 krb5_set_error_string(context, "malloc: out of memory");
88 ALLOC_SEQ(*auth_data, 1);
89 if ((*auth_data)->val == NULL) {
91 krb5_set_error_string(context, "malloc: out of memory");
95 (*auth_data)->val[0].ad_type = KRB5_AUTHDATA_IF_RELEVANT;
96 (*auth_data)->val[0].ad_data.length = len;
97 (*auth_data)->val[0].ad_data.data = buf;
102 krb5_error_code KRB5_LIB_FUNCTION
103 krb5_build_authenticator (krb5_context context,
104 krb5_auth_context auth_context,
105 krb5_enctype enctype,
108 Authenticator **auth_result,
110 krb5_key_usage usage)
119 auth = calloc(1, sizeof(*auth));
121 krb5_set_error_string(context, "malloc: out of memory");
125 auth->authenticator_vno = 5;
126 copy_Realm(&cred->client->realm, &auth->crealm);
127 copy_PrincipalName(&cred->client->name, &auth->cname);
129 krb5_us_timeofday (context, &auth->ctime, &auth->cusec);
131 ret = krb5_auth_con_getlocalsubkey(context, auth_context, &auth->subkey);
135 if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE) {
136 if(auth_context->local_seqnumber == 0)
137 krb5_generate_seq_number (context,
139 &auth_context->local_seqnumber);
140 ALLOC(auth->seq_number, 1);
141 if(auth->seq_number == NULL) {
145 *auth->seq_number = auth_context->local_seqnumber;
147 auth->seq_number = NULL;
148 auth->authorization_data = NULL;
151 if (cksum != NULL && cksum->cksumtype == CKSUMTYPE_GSSAPI) {
153 * This is not GSS-API specific, we only enable it for
156 ret = make_etypelist(context, &auth->authorization_data);
161 /* XXX - Copy more to auth_context? */
163 auth_context->authenticator->ctime = auth->ctime;
164 auth_context->authenticator->cusec = auth->cusec;
166 ASN1_MALLOC_ENCODE(Authenticator, buf, buf_size, auth, &len, ret);
170 krb5_abortx(context, "internal error in ASN.1 encoder");
172 ret = krb5_crypto_init(context, &cred->session, enctype, &crypto);
175 ret = krb5_encrypt (context,
177 usage /* KRB5_KU_AP_REQ_AUTH */,
178 buf + buf_size - len,
181 krb5_crypto_destroy(context, crypto);
191 /* Don't free the `cksum', it's allocated by the caller */
193 free_Authenticator (auth);
198 free_Authenticator (auth);