+++ /dev/null
-/* Copyright (c) 2007-2009, UNINETT AS
- * Copyright (c) 2010-2011, NORDUnet A/S */
-/* See LICENSE for licensing information. */
-
-#if defined HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <sys/types.h>
-#include <signal.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include <string.h>
-#include <unistd.h>
-#include <limits.h>
-#ifdef SYS_SOLARIS9
-#include <fcntl.h>
-#endif
-#include <sys/time.h>
-#include <sys/select.h>
-#include <ctype.h>
-#include <sys/wait.h>
-#include <arpa/inet.h>
-#include <regex.h>
-#include <libgen.h>
-#include <pthread.h>
-#include <openssl/ssl.h>
-#include <openssl/rand.h>
-#include <openssl/err.h>
-#include <openssl/md5.h>
-#include <openssl/x509v3.h>
-#include "debug.h"
-#include "list.h"
-#include "hash.h"
-#include "util.h"
-#include "hostport_types.h"
-#include "radsecproxy.h"
-
-static int pem_passwd_cb(char *buf, int size, int rwflag, void *userdata) {
- int pwdlen = strlen(userdata);
- if (rwflag != 0 || pwdlen > size) /* not for decryption or too large */
- return 0;
- memcpy(buf, userdata, pwdlen);
- return pwdlen;
-}
-
-static int verify_cb(int ok, X509_STORE_CTX *ctx) {
- char *buf = NULL;
- X509 *err_cert;
- int err, depth;
-
- err_cert = X509_STORE_CTX_get_current_cert(ctx);
- err = X509_STORE_CTX_get_error(ctx);
- depth = X509_STORE_CTX_get_error_depth(ctx);
-
- if (depth > MAX_CERT_DEPTH) {
- ok = 0;
- err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
- X509_STORE_CTX_set_error(ctx, err);
- }
-
- if (!ok) {
- if (err_cert)
- buf = X509_NAME_oneline(X509_get_subject_name(err_cert), NULL, 0);
- debug(DBG_WARN, "verify error: num=%d:%s:depth=%d:%s", err, X509_verify_cert_error_string(err), depth, buf ? buf : "");
- free(buf);
- buf = NULL;
-
- switch (err) {
- case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
- if (err_cert) {
- buf = X509_NAME_oneline(X509_get_issuer_name(err_cert), NULL, 0);
- if (buf) {
- debug(DBG_WARN, "\tIssuer=%s", buf);
- free(buf);
- buf = NULL;
- }
- }
- break;
- case X509_V_ERR_CERT_NOT_YET_VALID:
- case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
- debug(DBG_WARN, "\tCertificate not yet valid");
- break;
- case X509_V_ERR_CERT_HAS_EXPIRED:
- debug(DBG_WARN, "Certificate has expired");
- break;
- case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
- debug(DBG_WARN, "Certificate no longer valid (after notAfter)");
- break;
- case X509_V_ERR_NO_EXPLICIT_POLICY:
- debug(DBG_WARN, "No Explicit Certificate Policy");
- break;
- }
- }
- return ok;
-}
-
-#ifdef DEBUG
-static void ssl_info_callback(const SSL *ssl, int where, int ret) {
- const char *s;
- int w;
-
- w = where & ~SSL_ST_MASK;
-
- if (w & SSL_ST_CONNECT)
- s = "SSL_connect";
- else if (w & SSL_ST_ACCEPT)
- s = "SSL_accept";
- else
- s = "undefined";
-
- if (where & SSL_CB_LOOP)
- debug(DBG_DBG, "%s:%s\n", s, SSL_state_string_long(ssl));
- else if (where & SSL_CB_ALERT) {
- s = (where & SSL_CB_READ) ? "read" : "write";
- debug(DBG_DBG, "SSL3 alert %s:%s:%s\n", s, SSL_alert_type_string_long(ret), SSL_alert_desc_string_long(ret));
- }
- else if (where & SSL_CB_EXIT) {
- if (ret == 0)
- debug(DBG_DBG, "%s:failed in %s\n", s, SSL_state_string_long(ssl));
- else if (ret < 0)
- debug(DBG_DBG, "%s:error in %s\n", s, SSL_state_string_long(ssl));
- }
-}
-#endif
-
-static X509_VERIFY_PARAM *createverifyparams(char **poids) {
- X509_VERIFY_PARAM *pm;
- ASN1_OBJECT *pobject;
- int i;
-
- pm = X509_VERIFY_PARAM_new();
- if (!pm)
- return NULL;
-
- for (i = 0; poids[i]; i++) {
- pobject = OBJ_txt2obj(poids[i], 0);
- if (!pobject) {
- X509_VERIFY_PARAM_free(pm);
- return NULL;
- }
- X509_VERIFY_PARAM_add0_policy(pm, pobject);
- }
-
- X509_VERIFY_PARAM_set_flags(pm, X509_V_FLAG_POLICY_CHECK | X509_V_FLAG_EXPLICIT_POLICY);
- return pm;
-}
-
-static int tlsaddcacrl(SSL_CTX *ctx, struct tls *conf) {
- STACK_OF(X509_NAME) *calist;
- X509_STORE *x509_s;
- unsigned long error;
-
- if (!SSL_CTX_load_verify_locations(ctx, conf->cacertfile, conf->cacertpath)) {
- while ((error = ERR_get_error()))
- debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
- debug(DBG_ERR, "tlsaddcacrl: Error updating TLS context %s", conf->name);
- return 0;
- }
-
- calist = conf->cacertfile ? SSL_load_client_CA_file(conf->cacertfile) : NULL;
-
- if (!conf->cacertfile || calist) {
- if (conf->cacertpath) {
- if (!calist)
- calist = sk_X509_NAME_new_null();
- if (!SSL_add_dir_cert_subjects_to_stack(calist, conf->cacertpath)) {
- sk_X509_NAME_free(calist);
- calist = NULL;
- }
- }
- }
- if (!calist) {
- while ((error = ERR_get_error()))
- debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
- debug(DBG_ERR, "tlsaddcacrl: Error adding CA subjects in TLS context %s", conf->name);
- return 0;
- }
- ERR_clear_error(); /* add_dir_cert_subj returns errors on success */
- SSL_CTX_set_client_CA_list(ctx, calist);
-
- SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb);
- SSL_CTX_set_verify_depth(ctx, MAX_CERT_DEPTH + 1);
-
- if (conf->crlcheck || conf->vpm) {
- x509_s = SSL_CTX_get_cert_store(ctx);
- if (conf->crlcheck)
- X509_STORE_set_flags(x509_s, X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL);
- if (conf->vpm)
- X509_STORE_set1_param(x509_s, conf->vpm);
- }
-
- debug(DBG_DBG, "tlsaddcacrl: updated TLS context %s", conf->name);
- return 1;
-}
-
-static SSL_CTX *tlscreatectx(uint8_t type, struct tls *conf) {
- SSL_CTX *ctx = NULL;
- unsigned long error;
-
- switch (type) {
-#ifdef RADPROT_TLS
- case RAD_TLS:
- ctx = SSL_CTX_new(TLSv1_method());
- break;
-#endif
-#ifdef RADPROT_DTLS
- case RAD_DTLS:
- ctx = SSL_CTX_new(DTLSv1_method());
- SSL_CTX_set_read_ahead(ctx, 1);
- break;
-#endif
- }
- if (!ctx) {
- debug(DBG_ERR, "tlscreatectx: Error initialising SSL/TLS in TLS context %s", conf->name);
- while ((error = ERR_get_error()))
- debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
- return NULL;
- }
-#ifdef DEBUG
- SSL_CTX_set_info_callback(ctx, ssl_info_callback);
-#endif
-
- if (conf->certkeypwd) {
- SSL_CTX_set_default_passwd_cb_userdata(ctx, conf->certkeypwd);
- SSL_CTX_set_default_passwd_cb(ctx, pem_passwd_cb);
- }
- if (conf->certfile || conf->certkeyfile) {
- if (!SSL_CTX_use_certificate_chain_file(ctx, conf->certfile) ||
- !SSL_CTX_use_PrivateKey_file(ctx, conf->certkeyfile, SSL_FILETYPE_PEM) ||
- !SSL_CTX_check_private_key(ctx)) {
- while ((error = ERR_get_error()))
- debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
- debug(DBG_ERR, "tlscreatectx: Error initialising SSL/TLS (certfile issues) in TLS context %s", conf->name);
- SSL_CTX_free(ctx);
- return NULL;
- }
- }
-
- if (conf->policyoids) {
- if (!conf->vpm) {
- conf->vpm = createverifyparams(conf->policyoids);
- if (!conf->vpm) {
- debug(DBG_ERR, "tlscreatectx: Failed to add policyOIDs in TLS context %s", conf->name);
- SSL_CTX_free(ctx);
- return NULL;
- }
- }
- }
-
- if (conf->cacertfile != NULL || conf->cacertpath != NULL)
- if (!tlsaddcacrl(ctx, conf)) {
- if (conf->vpm) {
- X509_VERIFY_PARAM_free(conf->vpm);
- conf->vpm = NULL;
- }
- SSL_CTX_free(ctx);
- return NULL;
- }
-
- debug(DBG_DBG, "tlscreatectx: created TLS context %s", conf->name);
- return ctx;
-}
-
-SSL_CTX *tlsgetctx(uint8_t type, struct tls *t) {
- struct timeval now;
-
- if (!t)
- return NULL;
- gettimeofday(&now, NULL);
-
- switch (type) {
-#ifdef RADPROT_TLS
- case RAD_TLS:
- if (t->tlsexpiry && t->tlsctx) {
- if (t->tlsexpiry < now.tv_sec) {
- t->tlsexpiry = now.tv_sec + t->cacheexpiry;
- tlsaddcacrl(t->tlsctx, t);
- }
- }
- if (!t->tlsctx) {
- t->tlsctx = tlscreatectx(RAD_TLS, t);
- if (t->cacheexpiry)
- t->tlsexpiry = now.tv_sec + t->cacheexpiry;
- }
- return t->tlsctx;
-#endif
-#ifdef RADPROT_DTLS
- case RAD_DTLS:
- if (t->dtlsexpiry && t->dtlsctx) {
- if (t->dtlsexpiry < now.tv_sec) {
- t->dtlsexpiry = now.tv_sec + t->cacheexpiry;
- tlsaddcacrl(t->dtlsctx, t);
- }
- }
- if (!t->dtlsctx) {
- t->dtlsctx = tlscreatectx(RAD_DTLS, t);
- if (t->cacheexpiry)
- t->dtlsexpiry = now.tv_sec + t->cacheexpiry;
- }
- return t->dtlsctx;
-#endif
- }
- return NULL;
-}
-
-X509 *verifytlscert(SSL *ssl) {
- X509 *cert;
- unsigned long error;
-
- if (SSL_get_verify_result(ssl) != X509_V_OK) {
- debug(DBG_ERR, "verifytlscert: basic validation failed");
- while ((error = ERR_get_error()))
- debug(DBG_ERR, "verifytlscert: TLS: %s", ERR_error_string(error, NULL));
- return NULL;
- }
-
- cert = SSL_get_peer_certificate(ssl);
- if (!cert)
- debug(DBG_ERR, "verifytlscert: failed to obtain certificate");
- return cert;
-}
-
-int subjectaltnameaddr(X509 *cert, int family, const struct in6_addr *addr) {
- int loc, i, l, n, r = 0;
- char *v;
- X509_EXTENSION *ex;
- STACK_OF(GENERAL_NAME) *alt;
- GENERAL_NAME *gn;
-
- debug(DBG_DBG, "subjectaltnameaddr");
-
- loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
- if (loc < 0)
- return r;
-
- ex = X509_get_ext(cert, loc);
- alt = X509V3_EXT_d2i(ex);
- if (!alt)
- return r;
-
- n = sk_GENERAL_NAME_num(alt);
- for (i = 0; i < n; i++) {
- gn = sk_GENERAL_NAME_value(alt, i);
- if (gn->type != GEN_IPADD)
- continue;
- r = -1;
- v = (char *)ASN1_STRING_data(gn->d.ia5);
- l = ASN1_STRING_length(gn->d.ia5);
- if (((family == AF_INET && l == sizeof(struct in_addr)) || (family == AF_INET6 && l == sizeof(struct in6_addr)))
- && !memcmp(v, &addr, l)) {
- r = 1;
- break;
- }
- }
- GENERAL_NAMES_free(alt);
- return r;
-}
-
-int subjectaltnameregexp(X509 *cert, int type, const char *exact, const regex_t *regex) {
- int loc, i, l, n, r = 0;
- char *s, *v;
- X509_EXTENSION *ex;
- STACK_OF(GENERAL_NAME) *alt;
- GENERAL_NAME *gn;
-
- debug(DBG_DBG, "subjectaltnameregexp");
-
- loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
- if (loc < 0)
- return r;
-
- ex = X509_get_ext(cert, loc);
- alt = X509V3_EXT_d2i(ex);
- if (!alt)
- return r;
-
- n = sk_GENERAL_NAME_num(alt);
- for (i = 0; i < n; i++) {
- gn = sk_GENERAL_NAME_value(alt, i);
- if (gn->type != type)
- continue;
- r = -1;
- v = (char *)ASN1_STRING_data(gn->d.ia5);
- l = ASN1_STRING_length(gn->d.ia5);
- if (l <= 0)
- continue;
-#ifdef DEBUG
- printfchars(NULL, gn->type == GEN_DNS ? "dns" : "uri", NULL, v, l);
-#endif
- if (exact) {
- if (memcmp(v, exact, l))
- continue;
- } else {
- s = stringcopy((char *)v, l);
- if (!s) {
- debug(DBG_ERR, "malloc failed");
- continue;
- }
- if (regexec(regex, s, 0, NULL, 0)) {
- free(s);
- continue;
- }
- free(s);
- }
- r = 1;
- break;
- }
- GENERAL_NAMES_free(alt);
- return r;
-}
-
-int cnregexp(X509 *cert, const char *exact, const regex_t *regex) {
- int loc, l;
- char *v, *s;
- X509_NAME *nm;
- X509_NAME_ENTRY *e;
- ASN1_STRING *t;
-
- nm = X509_get_subject_name(cert);
- loc = -1;
- for (;;) {
- loc = X509_NAME_get_index_by_NID(nm, NID_commonName, loc);
- if (loc == -1)
- break;
- e = X509_NAME_get_entry(nm, loc);
- t = X509_NAME_ENTRY_get_data(e);
- v = (char *) ASN1_STRING_data(t);
- l = ASN1_STRING_length(t);
- if (l < 0)
- continue;
- if (exact) {
- if (l == strlen(exact) && !strncasecmp(exact, v, l))
- return 1;
- } else {
- s = stringcopy((char *)v, l);
- if (!s) {
- debug(DBG_ERR, "malloc failed");
- continue;
- }
- if (regexec(regex, s, 0, NULL, 0)) {
- free(s);
- continue;
- }
- free(s);
- return 1;
- }
- }
- return 0;
-}
-
-/* Local Variables: */
-/* c-file-style: "stroustrup" */
-/* End: */
projects / radsecproxy.git / blobdiff