--- /dev/null
+/*
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005-2012, Anthony Minessale II <anthm@freeswitch.org>
+ *
+ * Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ *
+ * The Initial Developer of the Original Code is
+ * Anthony Minessale II <anthm@freeswitch.org>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Anthony Minessale II <anthm@freeswitch.org>
+ *
+ * switch_cert.c -- Cert Functions
+ *
+ */
+
+#include <switch.h>
+
+
+static const EVP_MD *get_evp_by_name(const char *name)
+{
+ if (!strcasecmp(name, "md5")) return EVP_md5();
+ if (!strcasecmp(name, "sha1")) return EVP_sha1();
+ if (!strcasecmp(name, "sha-256")) return EVP_sha256();
+ if (!strcasecmp(name, "sha-512")) return EVP_sha512();
+
+ return NULL;
+}
+
+SWITCH_DECLARE(int) switch_core_cert_verify(dtls_fingerprint_t *fp)
+{
+ unsigned char fdata[MAX_FPLEN] = { 0 };
+ char *tmp = strdup(fp->str);
+ char *p = tmp;
+ int i = 0;
+ char *v;
+
+ while ((v = strsep(&p, ":")) && (i != (MAX_FPLEN - 1))) {
+ sscanf(v, "%02x", (uint32_t *) &fdata[i++]);
+ }
+
+ free(tmp);
+
+ i = !memcmp(fdata, fp->data, i);
+
+ return i;
+}
+
+SWITCH_DECLARE(int) switch_core_cert_expand_fingerprint(dtls_fingerprint_t *fp, const char *str)
+{
+ char *tmp = strdup(str);
+ char *p = tmp;
+ int i = 0;
+ char *v;
+
+ while ((v = strsep(&p, ":")) && (i != (MAX_FPLEN - 1))) {
+ sscanf(v, "%02x", (uint32_t *) &fp->data[i++]);
+ }
+
+ free(tmp);
+
+ return i;
+}
+
+SWITCH_DECLARE(int) switch_core_cert_extract_fingerprint(X509* x509, dtls_fingerprint_t *fp)
+{
+ const EVP_MD *evp;
+ int i, j;
+
+ evp = get_evp_by_name(fp->type);
+
+ if (X509_digest(x509, evp, fp->data, &fp->len) != 1 || fp->len <= 0) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "FP DIGEST ERR!\n");
+ return -1;
+ }
+
+ for (i = 0, j = 0; i < fp->len; ++i, j += 3){
+ sprintf((char*)&fp->str[j], (i == (fp->len - 1)) ? "%.2X" : "%.2X:", fp->data[i]);
+ }
+ *(&fp->str[fp->len * 3]) = '\0';
+
+ return 0;
+
+}
+
+SWITCH_DECLARE(int) switch_core_cert_gen_fingerprint(const char *prefix, dtls_fingerprint_t *fp)
+{
+ X509* x509 = NULL;
+ BIO* bio = NULL;
+ int ret = 0;
+ char *rsa;
+
+
+ rsa = switch_mprintf("%s%s%s.crt", SWITCH_GLOBAL_dirs.certs_dir, SWITCH_PATH_SEPARATOR, prefix);
+
+ if (!(bio = BIO_new(BIO_s_file()))) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "FP BIO ERR!\n");
+ goto end;
+ }
+
+ if (BIO_read_filename(bio, rsa) != 1) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "FP FILE ERR!\n");
+ goto end;
+ }
+
+ if (!(x509 = PEM_read_bio_X509(bio, NULL, 0, NULL))) {
+ switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "FP READ ERR!\n");
+ goto end;
+ }
+
+ switch_core_cert_extract_fingerprint(x509, fp);
+
+ ret = 1;
+
+ end:
+
+ if (bio) {
+ BIO_free_all(bio);
+ }
+
+ free(rsa);
+
+ return ret;
+}
+
+
+static int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
+static int add_ext(X509 *cert, int nid, char *value);
+
+SWITCH_DECLARE(int) switch_core_gen_certs(const char *prefix)
+{
+ //BIO *bio_err;
+ X509 *x509 = NULL;
+ EVP_PKEY *pkey = NULL;
+ char *rsa = NULL, *pvt = NULL;
+ FILE *fp;
+
+ pvt = switch_mprintf("%s%s%s.key", SWITCH_GLOBAL_dirs.certs_dir, SWITCH_PATH_SEPARATOR, prefix);
+ rsa = switch_mprintf("%s%s%s.crt", SWITCH_GLOBAL_dirs.certs_dir, SWITCH_PATH_SEPARATOR, prefix);
+
+ if (switch_file_exists(pvt, NULL) == SWITCH_STATUS_SUCCESS || switch_file_exists(rsa, NULL) == SWITCH_STATUS_SUCCESS) {
+ goto end;
+ }
+
+ CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
+
+ //bio_err=BIO_new_fp(stderr, BIO_NOCLOSE);
+
+ mkcert(&x509, &pkey, 512, 0, 365);
+
+ //RSA_print_fp(stdout, pkey->pkey.rsa, 0);
+ //X509_print_fp(stdout, x509);
+
+
+ if ((fp = fopen(pvt, "w"))) {
+ PEM_write_PrivateKey(fp, pkey, NULL, NULL, 0, NULL, NULL);
+ }
+
+ fclose(fp);
+
+ if ((fp = fopen(rsa, "w"))) {
+ PEM_write_X509(fp, x509);
+ }
+
+ fclose(fp);
+
+ X509_free(x509);
+ EVP_PKEY_free(pkey);
+
+#ifndef OPENSSL_NO_ENGINE
+ ENGINE_cleanup();
+#endif
+ CRYPTO_cleanup_all_ex_data();
+
+ //CRYPTO_mem_leaks(bio_err);
+ //BIO_free(bio_err);
+
+
+ end:
+
+ switch_safe_free(pvt);
+ switch_safe_free(rsa);
+
+ return(0);
+}
+
+static void callback(int p, int n, void *arg)
+{
+ char c='B';
+
+ if (p == 0) c='.';
+ if (p == 1) c='+';
+ if (p == 2) c='*';
+ if (p == 3) c='\n';
+ fputc(c, stderr);
+}
+
+static int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days)
+{
+ X509 *x;
+ EVP_PKEY *pk;
+ RSA *rsa;
+ X509_NAME *name=NULL;
+
+ if ((pkeyp == NULL) || (*pkeyp == NULL))
+ {
+ if ((pk=EVP_PKEY_new()) == NULL)
+ {
+ abort();
+ return(0);
+ }
+ }
+ else
+ pk= *pkeyp;
+
+ if ((x509p == NULL) || (*x509p == NULL))
+ {
+ if ((x=X509_new()) == NULL)
+ goto err;
+ }
+ else
+ x= *x509p;
+
+ rsa=RSA_generate_key(bits, RSA_F4, callback, NULL);
+ if (!EVP_PKEY_assign_RSA(pk, rsa))
+ {
+ abort();
+ goto err;
+ }
+ rsa=NULL;
+
+ X509_set_version(x, 2);
+ ASN1_INTEGER_set(X509_get_serialNumber(x), serial);
+ X509_gmtime_adj(X509_get_notBefore(x), 0);
+ X509_gmtime_adj(X509_get_notAfter(x), (long)60*60*24*days);
+ X509_set_pubkey(x, pk);
+
+ name=X509_get_subject_name(x);
+
+ /* This function creates and adds the entry, working out the
+ * correct string type and performing checks on its length.
+ * Normally we'd check the return value for errors...
+ */
+ X509_NAME_add_entry_by_txt(name, "C", MBSTRING_ASC, (unsigned char *)"US", -1, -1, 0);
+
+ X509_NAME_add_entry_by_txt(name, "CN", MBSTRING_ASC, (unsigned char *)"FreeSWITCH", -1, -1, 0);
+
+
+ /* Its self signed so set the issuer name to be the same as the
+ * subject.
+ */
+ X509_set_issuer_name(x, name);
+
+ /* Add various extensions: standard extensions */
+ add_ext(x, NID_basic_constraints, "critical, CA:TRUE");
+ add_ext(x, NID_key_usage, "critical, keyCertSign, cRLSign");
+
+ add_ext(x, NID_subject_key_identifier, "hash");
+
+ /* Some Netscape specific extensions */
+ add_ext(x, NID_netscape_cert_type, "sslCA");
+
+ add_ext(x, NID_netscape_comment, "Self-Signed CERT for DTLS");
+
+
+ if (!X509_sign(x, pk, EVP_md5()))
+ goto err;
+
+ *x509p=x;
+ *pkeyp=pk;
+ return(1);
+ err:
+ return(0);
+}
+
+/* Add extension using V3 code: we can set the config file as NULL
+ * because we wont reference any other sections.
+ */
+
+static int add_ext(X509 *cert, int nid, char *value)
+{
+ X509_EXTENSION *ex;
+ X509V3_CTX ctx;
+ /* This sets the 'context' of the extensions. */
+ /* No configuration database */
+ X509V3_set_ctx_nodb(&ctx);
+ /* Issuer and subject certs: both the target since it is self signed,
+ * no request and no CRL
+ */
+ X509V3_set_ctx(&ctx, cert, cert, NULL, NULL, 0);
+ ex = X509V3_EXT_conf_nid(NULL, &ctx, nid, value);
+ if (!ex)
+ return 0;
+
+ X509_add_ext(cert, ex, -1);
+ X509_EXTENSION_free(ex);
+ return 1;
+}
+
projects / thirdparty / freeswitch.git / commitdiff
