--- /dev/null
+/*
+ * Hotspot 2.0 OSU client - EST client
+ * Copyright (c) 2012-2014, Qualcomm Atheros, Inc.
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/pem.h>
+#include <openssl/pkcs7.h>
+#include <openssl/rsa.h>
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#ifdef OPENSSL_IS_BORINGSSL
+#include <openssl/buf.h>
+#endif /* OPENSSL_IS_BORINGSSL */
+
+#include "common.h"
+#include "utils/base64.h"
+#include "utils/xml-utils.h"
+#include "utils/http-utils.h"
+#include "osu_client.h"
+
+
+static int pkcs7_to_cert(struct hs20_osu_client *ctx, const u8 *pkcs7,
+ size_t len, char *pem_file, char *der_file)
+{
+#ifdef OPENSSL_IS_BORINGSSL
+ CBS pkcs7_cbs;
+#else /* OPENSSL_IS_BORINGSSL */
+ PKCS7 *p7 = NULL;
+ const unsigned char *p = pkcs7;
+#endif /* OPENSSL_IS_BORINGSSL */
+ STACK_OF(X509) *certs;
+ int i, num, ret = -1;
+ BIO *out = NULL;
+
+#ifdef OPENSSL_IS_BORINGSSL
+ certs = sk_X509_new_null();
+ if (!certs)
+ goto fail;
+ CBS_init(&pkcs7_cbs, pkcs7, len);
+ if (!PKCS7_get_certificates(certs, &pkcs7_cbs)) {
+ wpa_printf(MSG_INFO, "Could not parse PKCS#7 object: %s",
+ ERR_error_string(ERR_get_error(), NULL));
+ write_result(ctx, "Could not parse PKCS#7 object from EST");
+ goto fail;
+ }
+#else /* OPENSSL_IS_BORINGSSL */
+ p7 = d2i_PKCS7(NULL, &p, len);
+ if (p7 == NULL) {
+ wpa_printf(MSG_INFO, "Could not parse PKCS#7 object: %s",
+ ERR_error_string(ERR_get_error(), NULL));
+ write_result(ctx, "Could not parse PKCS#7 object from EST");
+ goto fail;
+ }
+
+ switch (OBJ_obj2nid(p7->type)) {
+ case NID_pkcs7_signed:
+ certs = p7->d.sign->cert;
+ break;
+ case NID_pkcs7_signedAndEnveloped:
+ certs = p7->d.signed_and_enveloped->cert;
+ break;
+ default:
+ certs = NULL;
+ break;
+ }
+#endif /* OPENSSL_IS_BORINGSSL */
+
+ if (!certs || ((num = sk_X509_num(certs)) == 0)) {
+ wpa_printf(MSG_INFO, "No certificates found in PKCS#7 object");
+ write_result(ctx, "No certificates found in PKCS#7 object");
+ goto fail;
+ }
+
+ if (der_file) {
+ FILE *f = fopen(der_file, "wb");
+ if (f == NULL)
+ goto fail;
+ i2d_X509_fp(f, sk_X509_value(certs, 0));
+ fclose(f);
+ }
+
+ if (pem_file) {
+ out = BIO_new(BIO_s_file());
+ if (out == NULL ||
+ BIO_write_filename(out, pem_file) <= 0)
+ goto fail;
+
+ for (i = 0; i < num; i++) {
+ X509 *cert = sk_X509_value(certs, i);
+ X509_print(out, cert);
+ PEM_write_bio_X509(out, cert);
+ BIO_puts(out, "\n");
+ }
+ }
+
+ ret = 0;
+
+fail:
+#ifdef OPENSSL_IS_BORINGSSL
+ if (certs)
+ sk_X509_pop_free(certs, X509_free);
+#else /* OPENSSL_IS_BORINGSSL */
+ PKCS7_free(p7);
+#endif /* OPENSSL_IS_BORINGSSL */
+ if (out)
+ BIO_free_all(out);
+
+ return ret;
+}
+
+
+int est_load_cacerts(struct hs20_osu_client *ctx, const char *url)
+{
+ char *buf, *resp;
+ size_t buflen;
+ unsigned char *pkcs7;
+ size_t pkcs7_len, resp_len;
+ int res;
+
+ buflen = os_strlen(url) + 100;
+ buf = os_malloc(buflen);
+ if (buf == NULL)
+ return -1;
+
+ os_snprintf(buf, buflen, "%s/cacerts", url);
+ wpa_printf(MSG_INFO, "Download EST cacerts from %s", buf);
+ write_summary(ctx, "Download EST cacerts from %s", buf);
+ ctx->no_osu_cert_validation = 1;
+ http_ocsp_set(ctx->http, 1);
+ res = http_download_file(ctx->http, buf, "Cert/est-cacerts.txt",
+ ctx->ca_fname);
+ http_ocsp_set(ctx->http,
+ (ctx->workarounds & WORKAROUND_OCSP_OPTIONAL) ? 1 : 2);
+ ctx->no_osu_cert_validation = 0;
+ if (res < 0) {
+ wpa_printf(MSG_INFO, "Failed to download EST cacerts from %s",
+ buf);
+ write_result(ctx, "Failed to download EST cacerts from %s",
+ buf);
+ os_free(buf);
+ return -1;
+ }
+ os_free(buf);
+
+ resp = os_readfile("Cert/est-cacerts.txt", &resp_len);
+ if (resp == NULL) {
+ wpa_printf(MSG_INFO, "Could not read Cert/est-cacerts.txt");
+ write_result(ctx, "Could not read EST cacerts");
+ return -1;
+ }
+
+ pkcs7 = base64_decode((unsigned char *) resp, resp_len, &pkcs7_len);
+ if (pkcs7 && pkcs7_len < resp_len / 2) {
+ wpa_printf(MSG_INFO, "Too short base64 decode (%u bytes; downloaded %u bytes) - assume this was binary",
+ (unsigned int) pkcs7_len, (unsigned int) resp_len);
+ os_free(pkcs7);
+ pkcs7 = NULL;
+ }
+ if (pkcs7 == NULL) {
+ wpa_printf(MSG_INFO, "EST workaround - Could not decode base64, assume this is DER encoded PKCS7");
+ pkcs7 = os_malloc(resp_len);
+ if (pkcs7) {
+ os_memcpy(pkcs7, resp, resp_len);
+ pkcs7_len = resp_len;
+ }
+ }
+ os_free(resp);
+
+ if (pkcs7 == NULL) {
+ wpa_printf(MSG_INFO, "Could not fetch PKCS7 cacerts");
+ write_result(ctx, "Could not fetch EST PKCS#7 cacerts");
+ return -1;
+ }
+
+ res = pkcs7_to_cert(ctx, pkcs7, pkcs7_len, "Cert/est-cacerts.pem",
+ NULL);
+ os_free(pkcs7);
+ if (res < 0) {
+ wpa_printf(MSG_INFO, "Could not parse CA certs from PKCS#7 cacerts response");
+ write_result(ctx, "Could not parse CA certs from EST PKCS#7 cacerts response");
+ return -1;
+ }
+ unlink("Cert/est-cacerts.txt");
+
+ return 0;
+}
+
+
+/*
+ * CsrAttrs ::= SEQUENCE SIZE (0..MAX) OF AttrOrOID
+ *
+ * AttrOrOID ::= CHOICE {
+ * oid OBJECT IDENTIFIER,
+ * attribute Attribute }
+ *
+ * Attribute ::= SEQUENCE {
+ * type OBJECT IDENTIFIER,
+ * values SET SIZE(1..MAX) OF OBJECT IDENTIFIER }
+ */
+
+typedef struct {
+ ASN1_OBJECT *type;
+ STACK_OF(ASN1_OBJECT) *values;
+} Attribute;
+
+typedef struct {
+ int type;
+ union {
+ ASN1_OBJECT *oid;
+ Attribute *attribute;
+ } d;
+} AttrOrOID;
+
+typedef struct {
+ int type;
+ STACK_OF(AttrOrOID) *attrs;
+} CsrAttrs;
+
+ASN1_SEQUENCE(Attribute) = {
+ ASN1_SIMPLE(Attribute, type, ASN1_OBJECT),
+ ASN1_SET_OF(Attribute, values, ASN1_OBJECT)
+} ASN1_SEQUENCE_END(Attribute);
+
+ASN1_CHOICE(AttrOrOID) = {
+ ASN1_SIMPLE(AttrOrOID, d.oid, ASN1_OBJECT),
+ ASN1_SIMPLE(AttrOrOID, d.attribute, Attribute)
+} ASN1_CHOICE_END(AttrOrOID);
+
+ASN1_CHOICE(CsrAttrs) = {
+ ASN1_SEQUENCE_OF(CsrAttrs, attrs, AttrOrOID)
+} ASN1_CHOICE_END(CsrAttrs);
+
+IMPLEMENT_ASN1_FUNCTIONS(CsrAttrs);
+
+
+static void add_csrattrs_oid(struct hs20_osu_client *ctx, ASN1_OBJECT *oid,
+ STACK_OF(X509_EXTENSION) *exts)
+{
+ char txt[100];
+ int res;
+
+ if (!oid)
+ return;
+
+ res = OBJ_obj2txt(txt, sizeof(txt), oid, 1);
+ if (res < 0 || res >= (int) sizeof(txt))
+ return;
+
+ if (os_strcmp(txt, "1.2.840.113549.1.9.7") == 0) {
+ wpa_printf(MSG_INFO, "TODO: csrattr challengePassword");
+ } else if (os_strcmp(txt, "1.2.840.113549.1.1.11") == 0) {
+ wpa_printf(MSG_INFO, "csrattr sha256WithRSAEncryption");
+ } else {
+ wpa_printf(MSG_INFO, "Ignore unsupported csrattr oid %s", txt);
+ }
+}
+
+
+static void add_csrattrs_ext_req(struct hs20_osu_client *ctx,
+ STACK_OF(ASN1_OBJECT) *values,
+ STACK_OF(X509_EXTENSION) *exts)
+{
+ char txt[100];
+ int i, num, res;
+
+ num = sk_ASN1_OBJECT_num(values);
+ for (i = 0; i < num; i++) {
+ ASN1_OBJECT *oid = sk_ASN1_OBJECT_value(values, i);
+
+ res = OBJ_obj2txt(txt, sizeof(txt), oid, 1);
+ if (res < 0 || res >= (int) sizeof(txt))
+ continue;
+
+ if (os_strcmp(txt, "1.3.6.1.1.1.1.22") == 0) {
+ wpa_printf(MSG_INFO, "TODO: extReq macAddress");
+ } else if (os_strcmp(txt, "1.3.6.1.4.1.40808.1.1.3") == 0) {
+ wpa_printf(MSG_INFO, "TODO: extReq imei");
+ } else if (os_strcmp(txt, "1.3.6.1.4.1.40808.1.1.4") == 0) {
+ wpa_printf(MSG_INFO, "TODO: extReq meid");
+ } else if (os_strcmp(txt, "1.3.6.1.4.1.40808.1.1.5") == 0) {
+ wpa_printf(MSG_INFO, "TODO: extReq DevId");
+ } else {
+ wpa_printf(MSG_INFO, "Ignore unsupported cstattr extensionsRequest %s",
+ txt);
+ }
+ }
+}
+
+
+static void add_csrattrs_attr(struct hs20_osu_client *ctx, Attribute *attr,
+ STACK_OF(X509_EXTENSION) *exts)
+{
+ char txt[100], txt2[100];
+ int i, num, res;
+
+ if (!attr || !attr->type || !attr->values)
+ return;
+
+ res = OBJ_obj2txt(txt, sizeof(txt), attr->type, 1);
+ if (res < 0 || res >= (int) sizeof(txt))
+ return;
+
+ if (os_strcmp(txt, "1.2.840.113549.1.9.14") == 0) {
+ add_csrattrs_ext_req(ctx, attr->values, exts);
+ return;
+ }
+
+ num = sk_ASN1_OBJECT_num(attr->values);
+ for (i = 0; i < num; i++) {
+ ASN1_OBJECT *oid = sk_ASN1_OBJECT_value(attr->values, i);
+
+ res = OBJ_obj2txt(txt2, sizeof(txt2), oid, 1);
+ if (res < 0 || res >= (int) sizeof(txt2))
+ continue;
+
+ wpa_printf(MSG_INFO, "Ignore unsupported cstattr::attr %s oid %s",
+ txt, txt2);
+ }
+}
+
+
+static void add_csrattrs(struct hs20_osu_client *ctx, CsrAttrs *csrattrs,
+ STACK_OF(X509_EXTENSION) *exts)
+{
+ int i, num;
+
+ if (!csrattrs || ! csrattrs->attrs)
+ return;
+
+#ifdef OPENSSL_IS_BORINGSSL
+ num = sk_num(CHECKED_CAST(_STACK *, STACK_OF(AttrOrOID) *,
+ csrattrs->attrs));
+ for (i = 0; i < num; i++) {
+ AttrOrOID *ao = sk_value(
+ CHECKED_CAST(_STACK *, const STACK_OF(AttrOrOID) *,
+ csrattrs->attrs), i);
+ switch (ao->type) {
+ case 0:
+ add_csrattrs_oid(ctx, ao->d.oid, exts);
+ break;
+ case 1:
+ add_csrattrs_attr(ctx, ao->d.attribute, exts);
+ break;
+ }
+ }
+#else /* OPENSSL_IS_BORINGSSL */
+ num = SKM_sk_num(AttrOrOID, csrattrs->attrs);
+ for (i = 0; i < num; i++) {
+ AttrOrOID *ao = SKM_sk_value(AttrOrOID, csrattrs->attrs, i);
+ switch (ao->type) {
+ case 0:
+ add_csrattrs_oid(ctx, ao->d.oid, exts);
+ break;
+ case 1:
+ add_csrattrs_attr(ctx, ao->d.attribute, exts);
+ break;
+ }
+ }
+#endif /* OPENSSL_IS_BORINGSSL */
+}
+
+
+static int generate_csr(struct hs20_osu_client *ctx, char *key_pem,
+ char *csr_pem, char *est_req, char *old_cert,
+ CsrAttrs *csrattrs)
+{
+ EVP_PKEY_CTX *pctx = NULL;
+ EVP_PKEY *pkey = NULL;
+ RSA *rsa;
+ X509_REQ *req = NULL;
+ int ret = -1;
+ unsigned int val;
+ X509_NAME *subj = NULL;
+ char name[100];
+ STACK_OF(X509_EXTENSION) *exts = NULL;
+ X509_EXTENSION *ex;
+ BIO *out;
+ CONF *ctmp = NULL;
+
+ wpa_printf(MSG_INFO, "Generate RSA private key");
+ write_summary(ctx, "Generate RSA private key");
+ pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_RSA, NULL);
+ if (!pctx)
+ return -1;
+
+ if (EVP_PKEY_keygen_init(pctx) <= 0)
+ goto fail;
+
+ if (EVP_PKEY_CTX_set_rsa_keygen_bits(pctx, 2048) <= 0)
+ goto fail;
+
+ if (EVP_PKEY_keygen(pctx, &pkey) <= 0)
+ goto fail;
+ EVP_PKEY_CTX_free(pctx);
+ pctx = NULL;
+
+ rsa = EVP_PKEY_get1_RSA(pkey);
+ if (rsa == NULL)
+ goto fail;
+
+ if (key_pem) {
+ FILE *f = fopen(key_pem, "wb");
+ if (f == NULL)
+ goto fail;
+ if (!PEM_write_RSAPrivateKey(f, rsa, NULL, NULL, 0, NULL,
+ NULL)) {
+ wpa_printf(MSG_INFO, "Could not write private key: %s",
+ ERR_error_string(ERR_get_error(), NULL));
+ fclose(f);
+ goto fail;
+ }
+ fclose(f);
+ }
+
+ wpa_printf(MSG_INFO, "Generate CSR");
+ write_summary(ctx, "Generate CSR");
+ req = X509_REQ_new();
+ if (req == NULL)
+ goto fail;
+
+ if (old_cert) {
+ FILE *f;
+ X509 *cert;
+ int res;
+
+ f = fopen(old_cert, "r");
+ if (f == NULL)
+ goto fail;
+ cert = PEM_read_X509(f, NULL, NULL, NULL);
+ fclose(f);
+
+ if (cert == NULL)
+ goto fail;
+ res = X509_REQ_set_subject_name(req,
+ X509_get_subject_name(cert));
+ X509_free(cert);
+ if (!res)
+ goto fail;
+ } else {
+ os_get_random((u8 *) &val, sizeof(val));
+ os_snprintf(name, sizeof(name), "cert-user-%u", val);
+ subj = X509_NAME_new();
+ if (subj == NULL ||
+ !X509_NAME_add_entry_by_txt(subj, "CN", MBSTRING_ASC,
+ (unsigned char *) name,
+ -1, -1, 0) ||
+ !X509_REQ_set_subject_name(req, subj))
+ goto fail;
+ X509_NAME_free(subj);
+ subj = NULL;
+ }
+
+ if (!X509_REQ_set_pubkey(req, pkey))
+ goto fail;
+
+ exts = sk_X509_EXTENSION_new_null();
+ if (!exts)
+ goto fail;
+
+ ex = X509V3_EXT_nconf_nid(ctmp, NULL, NID_basic_constraints,
+ "CA:FALSE");
+ if (ex == NULL ||
+ !sk_X509_EXTENSION_push(exts, ex))
+ goto fail;
+
+ ex = X509V3_EXT_nconf_nid(ctmp, NULL, NID_key_usage,
+ "nonRepudiation,digitalSignature,keyEncipherment");
+ if (ex == NULL ||
+ !sk_X509_EXTENSION_push(exts, ex))
+ goto fail;
+
+ ex = X509V3_EXT_nconf_nid(ctmp, NULL, NID_ext_key_usage,
+ "1.3.6.1.4.1.40808.1.1.2");
+ if (ex == NULL ||
+ !sk_X509_EXTENSION_push(exts, ex))
+ goto fail;
+
+ add_csrattrs(ctx, csrattrs, exts);
+
+ if (!X509_REQ_add_extensions(req, exts))
+ goto fail;
+ sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
+ exts = NULL;
+
+ if (!X509_REQ_sign(req, pkey, EVP_sha256()))
+ goto fail;
+
+ out = BIO_new(BIO_s_mem());
+ if (out) {
+ char *txt;
+ size_t rlen;
+
+#if !defined(ANDROID) || !defined(OPENSSL_IS_BORINGSSL)
+ X509_REQ_print(out, req);
+#endif
+ rlen = BIO_ctrl_pending(out);
+ txt = os_malloc(rlen + 1);
+ if (txt) {
+ int res = BIO_read(out, txt, rlen);
+ if (res > 0) {
+ txt[res] = '\0';
+ wpa_printf(MSG_MSGDUMP, "OpenSSL: Certificate request:\n%s",
+ txt);
+ }
+ os_free(txt);
+ }
+ BIO_free(out);
+ }
+
+ if (csr_pem) {
+ FILE *f = fopen(csr_pem, "w");
+ if (f == NULL)
+ goto fail;
+#if !defined(ANDROID) || !defined(OPENSSL_IS_BORINGSSL)
+ X509_REQ_print_fp(f, req);
+#endif
+ if (!PEM_write_X509_REQ(f, req)) {
+ fclose(f);
+ goto fail;
+ }
+ fclose(f);
+ }
+
+ if (est_req) {
+ BIO *mem = BIO_new(BIO_s_mem());
+ BUF_MEM *ptr;
+ char *pos, *end, *buf_end;
+ FILE *f;
+
+ if (mem == NULL)
+ goto fail;
+ if (!PEM_write_bio_X509_REQ(mem, req)) {
+ BIO_free(mem);
+ goto fail;
+ }
+
+ BIO_get_mem_ptr(mem, &ptr);
+ pos = ptr->data;
+ buf_end = pos + ptr->length;
+
+ /* Remove START/END lines */
+ while (pos < buf_end && *pos != '\n')
+ pos++;
+ if (pos == buf_end) {
+ BIO_free(mem);
+ goto fail;
+ }
+ pos++;
+
+ end = pos;
+ while (end < buf_end && *end != '-')
+ end++;
+
+ f = fopen(est_req, "w");
+ if (f == NULL) {
+ BIO_free(mem);
+ goto fail;
+ }
+ fwrite(pos, end - pos, 1, f);
+ fclose(f);
+
+ BIO_free(mem);
+ }
+
+ ret = 0;
+fail:
+ if (exts)
+ sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
+ if (subj)
+ X509_NAME_free(subj);
+ if (req)
+ X509_REQ_free(req);
+ if (pkey)
+ EVP_PKEY_free(pkey);
+ if (pctx)
+ EVP_PKEY_CTX_free(pctx);
+ return ret;
+}
+
+
+int est_build_csr(struct hs20_osu_client *ctx, const char *url)
+{
+ char *buf;
+ size_t buflen;
+ int res;
+ char old_cert_buf[200];
+ char *old_cert = NULL;
+ CsrAttrs *csrattrs = NULL;
+
+ buflen = os_strlen(url) + 100;
+ buf = os_malloc(buflen);
+ if (buf == NULL)
+ return -1;
+
+ os_snprintf(buf, buflen, "%s/csrattrs", url);
+ wpa_printf(MSG_INFO, "Download csrattrs from %s", buf);
+ write_summary(ctx, "Download EST csrattrs from %s", buf);
+ ctx->no_osu_cert_validation = 1;
+ http_ocsp_set(ctx->http, 1);
+ res = http_download_file(ctx->http, buf, "Cert/est-csrattrs.txt",
+ ctx->ca_fname);
+ http_ocsp_set(ctx->http,
+ (ctx->workarounds & WORKAROUND_OCSP_OPTIONAL) ? 1 : 2);
+ ctx->no_osu_cert_validation = 0;
+ os_free(buf);
+ if (res < 0) {
+ wpa_printf(MSG_INFO, "Failed to download EST csrattrs - assume no extra attributes are needed");
+ } else {
+ size_t resp_len;
+ char *resp;
+ unsigned char *attrs;
+ const unsigned char *pos;
+ size_t attrs_len;
+
+ resp = os_readfile("Cert/est-csrattrs.txt", &resp_len);
+ if (resp == NULL) {
+ wpa_printf(MSG_INFO, "Could not read csrattrs");
+ return -1;
+ }
+
+ attrs = base64_decode((unsigned char *) resp, resp_len,
+ &attrs_len);
+ os_free(resp);
+
+ if (attrs == NULL) {
+ wpa_printf(MSG_INFO, "Could not base64 decode csrattrs");
+ return -1;
+ }
+ unlink("Cert/est-csrattrs.txt");
+
+ pos = attrs;
+ csrattrs = d2i_CsrAttrs(NULL, &pos, attrs_len);
+ os_free(attrs);
+ if (csrattrs == NULL) {
+ wpa_printf(MSG_INFO, "Failed to parse csrattrs ASN.1");
+ /* Continue assuming no additional requirements */
+ }
+ }
+
+ if (ctx->client_cert_present) {
+ os_snprintf(old_cert_buf, sizeof(old_cert_buf),
+ "SP/%s/client-cert.pem", ctx->fqdn);
+ old_cert = old_cert_buf;
+ }
+
+ res = generate_csr(ctx, "Cert/privkey-plain.pem", "Cert/est-req.pem",
+ "Cert/est-req.b64", old_cert, csrattrs);
+ if (csrattrs)
+ CsrAttrs_free(csrattrs);
+
+ return res;
+}
+
+
+int est_simple_enroll(struct hs20_osu_client *ctx, const char *url,
+ const char *user, const char *pw)
+{
+ char *buf, *resp, *req, *req2;
+ size_t buflen, resp_len, len, pkcs7_len;
+ unsigned char *pkcs7;
+ FILE *f;
+ char client_cert_buf[200];
+ char client_key_buf[200];
+ const char *client_cert = NULL, *client_key = NULL;
+ int res;
+
+ req = os_readfile("Cert/est-req.b64", &len);
+ if (req == NULL) {
+ wpa_printf(MSG_INFO, "Could not read Cert/req.b64");
+ return -1;
+ }
+ req2 = os_realloc(req, len + 1);
+ if (req2 == NULL) {
+ os_free(req);
+ return -1;
+ }
+ req2[len] = '\0';
+ req = req2;
+ wpa_printf(MSG_DEBUG, "EST simpleenroll request: %s", req);
+
+ buflen = os_strlen(url) + 100;
+ buf = os_malloc(buflen);
+ if (buf == NULL) {
+ os_free(req);
+ return -1;
+ }
+
+ if (ctx->client_cert_present) {
+ os_snprintf(buf, buflen, "%s/simplereenroll", url);
+ os_snprintf(client_cert_buf, sizeof(client_cert_buf),
+ "SP/%s/client-cert.pem", ctx->fqdn);
+ client_cert = client_cert_buf;
+ os_snprintf(client_key_buf, sizeof(client_key_buf),
+ "SP/%s/client-key.pem", ctx->fqdn);
+ client_key = client_key_buf;
+ } else
+ os_snprintf(buf, buflen, "%s/simpleenroll", url);
+ wpa_printf(MSG_INFO, "EST simpleenroll URL: %s", buf);
+ write_summary(ctx, "EST simpleenroll URL: %s", buf);
+ ctx->no_osu_cert_validation = 1;
+ http_ocsp_set(ctx->http, 1);
+ resp = http_post(ctx->http, buf, req, "application/pkcs10",
+ "Content-Transfer-Encoding: base64",
+ ctx->ca_fname, user, pw, client_cert, client_key,
+ &resp_len);
+ http_ocsp_set(ctx->http,
+ (ctx->workarounds & WORKAROUND_OCSP_OPTIONAL) ? 1 : 2);
+ ctx->no_osu_cert_validation = 0;
+ os_free(buf);
+ if (resp == NULL) {
+ wpa_printf(MSG_INFO, "EST certificate enrollment failed");
+ write_result(ctx, "EST certificate enrollment failed");
+ return -1;
+ }
+ wpa_printf(MSG_DEBUG, "EST simpleenroll response: %s", resp);
+ f = fopen("Cert/est-resp.raw", "w");
+ if (f) {
+ fwrite(resp, resp_len, 1, f);
+ fclose(f);
+ }
+
+ pkcs7 = base64_decode((unsigned char *) resp, resp_len, &pkcs7_len);
+ if (pkcs7 == NULL) {
+ wpa_printf(MSG_INFO, "EST workaround - Could not decode base64, assume this is DER encoded PKCS7");
+ pkcs7 = os_malloc(resp_len);
+ if (pkcs7) {
+ os_memcpy(pkcs7, resp, resp_len);
+ pkcs7_len = resp_len;
+ }
+ }
+ os_free(resp);
+
+ if (pkcs7 == NULL) {
+ wpa_printf(MSG_INFO, "Failed to parse simpleenroll base64 response");
+ write_result(ctx, "Failed to parse EST simpleenroll base64 response");
+ return -1;
+ }
+
+ res = pkcs7_to_cert(ctx, pkcs7, pkcs7_len, "Cert/est_cert.pem",
+ "Cert/est_cert.der");
+ os_free(pkcs7);
+
+ if (res < 0) {
+ wpa_printf(MSG_INFO, "EST: Failed to extract certificate from PKCS7 file");
+ write_result(ctx, "EST: Failed to extract certificate from EST PKCS7 file");
+ return -1;
+ }
+
+ wpa_printf(MSG_INFO, "EST simple%senroll completed successfully",
+ ctx->client_cert_present ? "re" : "");
+ write_summary(ctx, "EST simple%senroll completed successfully",
+ ctx->client_cert_present ? "re" : "");
+
+ return 0;
+}
projects / mech_eap.git / blobdiff