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-rw-r--r--tools/client.c1112
1 files changed, 1112 insertions, 0 deletions
diff --git a/tools/client.c b/tools/client.c
new file mode 100644
index 000000000000..9838857275ec
--- /dev/null
+++ b/tools/client.c
@@ -0,0 +1,1112 @@
+/*
+ * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <errno.h>
+#include <signal.h>
+
+#ifdef _WIN32
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#else
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#define SOCKET int
+#define INVALID_SOCKET (-1)
+#endif
+
+#include "brssl.h"
+
+static int
+host_connect(const char *host, const char *port, int verbose)
+{
+ struct addrinfo hints, *si, *p;
+ SOCKET fd;
+ int err;
+
+ memset(&hints, 0, sizeof hints);
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ err = getaddrinfo(host, port, &hints, &si);
+ if (err != 0) {
+ fprintf(stderr, "ERROR: getaddrinfo(): %s\n",
+ gai_strerror(err));
+ return INVALID_SOCKET;
+ }
+ fd = INVALID_SOCKET;
+ for (p = si; p != NULL; p = p->ai_next) {
+ if (verbose) {
+ struct sockaddr *sa;
+ void *addr;
+ char tmp[INET6_ADDRSTRLEN + 50];
+
+ sa = (struct sockaddr *)p->ai_addr;
+ if (sa->sa_family == AF_INET) {
+ addr = &((struct sockaddr_in *)
+ (void *)sa)->sin_addr;
+ } else if (sa->sa_family == AF_INET6) {
+ addr = &((struct sockaddr_in6 *)
+ (void *)sa)->sin6_addr;
+ } else {
+ addr = NULL;
+ }
+ if (addr != NULL) {
+ if (!inet_ntop(p->ai_family, addr,
+ tmp, sizeof tmp))
+ {
+ strcpy(tmp, "<invalid>");
+ }
+ } else {
+ sprintf(tmp, "<unknown family: %d>",
+ (int)sa->sa_family);
+ }
+ fprintf(stderr, "connecting to: %s\n", tmp);
+ }
+ fd = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
+ if (fd == INVALID_SOCKET) {
+ if (verbose) {
+ perror("socket()");
+ }
+ continue;
+ }
+ if (connect(fd, p->ai_addr, p->ai_addrlen) == INVALID_SOCKET) {
+ if (verbose) {
+ perror("connect()");
+ }
+#ifdef _WIN32
+ closesocket(fd);
+#else
+ close(fd);
+#endif
+ continue;
+ }
+ break;
+ }
+ if (p == NULL) {
+ freeaddrinfo(si);
+ fprintf(stderr, "ERROR: failed to connect\n");
+ return INVALID_SOCKET;
+ }
+ freeaddrinfo(si);
+ if (verbose) {
+ fprintf(stderr, "connected.\n");
+ }
+
+ /*
+ * We make the socket non-blocking, since we are going to use
+ * poll() or select() to organise I/O.
+ */
+#ifdef _WIN32
+ {
+ u_long arg;
+
+ arg = 1;
+ ioctlsocket(fd, FIONBIO, &arg);
+ }
+#else
+ fcntl(fd, F_SETFL, O_NONBLOCK);
+#endif
+ return fd;
+}
+
+typedef struct {
+ const br_ssl_client_certificate_class *vtable;
+ int verbose;
+ br_x509_certificate *chain;
+ size_t chain_len;
+ private_key *sk;
+ int issuer_key_type;
+} ccert_context;
+
+static void
+cc_start_name_list(const br_ssl_client_certificate_class **pctx)
+{
+ ccert_context *zc;
+
+ zc = (ccert_context *)pctx;
+ if (zc->verbose) {
+ fprintf(stderr, "Server requests a client certificate.\n");
+ fprintf(stderr, "--- anchor DN list start ---\n");
+ }
+}
+
+static void
+cc_start_name(const br_ssl_client_certificate_class **pctx, size_t len)
+{
+ ccert_context *zc;
+
+ zc = (ccert_context *)pctx;
+ if (zc->verbose) {
+ fprintf(stderr, "new anchor name, length = %u\n",
+ (unsigned)len);
+ }
+}
+
+static void
+cc_append_name(const br_ssl_client_certificate_class **pctx,
+ const unsigned char *data, size_t len)
+{
+ ccert_context *zc;
+
+ zc = (ccert_context *)pctx;
+ if (zc->verbose) {
+ size_t u;
+
+ for (u = 0; u < len; u ++) {
+ if (u == 0) {
+ fprintf(stderr, " ");
+ } else if (u > 0 && u % 16 == 0) {
+ fprintf(stderr, "\n ");
+ }
+ fprintf(stderr, " %02x", data[u]);
+ }
+ if (len > 0) {
+ fprintf(stderr, "\n");
+ }
+ }
+}
+
+static void
+cc_end_name(const br_ssl_client_certificate_class **pctx)
+{
+ (void)pctx;
+}
+
+static void
+cc_end_name_list(const br_ssl_client_certificate_class **pctx)
+{
+ ccert_context *zc;
+
+ zc = (ccert_context *)pctx;
+ if (zc->verbose) {
+ fprintf(stderr, "--- anchor DN list end ---\n");
+ }
+}
+
+static void
+print_hashes(unsigned hh, unsigned hh2)
+{
+ int i;
+
+ for (i = 0; i < 8; i ++) {
+ const char *name;
+
+ name = hash_function_name(i);
+ if (((hh >> i) & 1) != 0) {
+ fprintf(stderr, " %s", name);
+ } else if (((hh2 >> i) & 1) != 0) {
+ fprintf(stderr, " (%s)", name);
+ }
+ }
+}
+
+static int
+choose_hash(unsigned hh)
+{
+ static const int f[] = {
+ br_sha256_ID, br_sha224_ID, br_sha384_ID, br_sha512_ID,
+ br_sha1_ID, br_md5sha1_ID, -1
+ };
+
+ size_t u;
+
+ for (u = 0; f[u] >= 0; u ++) {
+ if (((hh >> f[u]) & 1) != 0) {
+ return f[u];
+ }
+ }
+ return -1;
+}
+
+static void
+cc_choose(const br_ssl_client_certificate_class **pctx,
+ const br_ssl_client_context *cc, uint32_t auth_types,
+ br_ssl_client_certificate *choices)
+{
+ ccert_context *zc;
+ int scurve;
+
+ zc = (ccert_context *)pctx;
+ scurve = br_ssl_client_get_server_curve(cc);
+ if (zc->verbose) {
+ unsigned hashes;
+
+ hashes = br_ssl_client_get_server_hashes(cc);
+ if ((auth_types & 0x00FF) != 0) {
+ fprintf(stderr, "supported: RSA signatures:");
+ print_hashes(auth_types, hashes);
+ fprintf(stderr, "\n");
+ }
+ if ((auth_types & 0xFF00) != 0) {
+ fprintf(stderr, "supported: ECDSA signatures:");
+ print_hashes(auth_types >> 8, hashes >> 8);
+ fprintf(stderr, "\n");
+ }
+ if ((auth_types & 0x010000) != 0) {
+ fprintf(stderr, "supported:"
+ " fixed ECDH (cert signed with RSA)\n");
+ }
+ if ((auth_types & 0x020000) != 0) {
+ fprintf(stderr, "supported:"
+ " fixed ECDH (cert signed with ECDSA)\n");
+ }
+ if (scurve) {
+ fprintf(stderr, "server key curve: %s (%d)\n",
+ ec_curve_name(scurve), scurve);
+ } else {
+ fprintf(stderr, "server key is not EC\n");
+ }
+ }
+ switch (zc->sk->key_type) {
+ case BR_KEYTYPE_RSA:
+ if ((choices->hash_id = choose_hash(auth_types)) >= 0) {
+ if (zc->verbose) {
+ fprintf(stderr, "using RSA, hash = %d (%s)\n",
+ choices->hash_id,
+ hash_function_name(choices->hash_id));
+ }
+ choices->auth_type = BR_AUTH_RSA;
+ choices->chain = zc->chain;
+ choices->chain_len = zc->chain_len;
+ return;
+ }
+ break;
+ case BR_KEYTYPE_EC:
+ if (zc->issuer_key_type != 0
+ && scurve == zc->sk->key.ec.curve)
+ {
+ int x;
+
+ x = (zc->issuer_key_type == BR_KEYTYPE_RSA) ? 16 : 17;
+ if (((auth_types >> x) & 1) != 0) {
+ if (zc->verbose) {
+ fprintf(stderr, "using static ECDH\n");
+ }
+ choices->auth_type = BR_AUTH_ECDH;
+ choices->hash_id = -1;
+ choices->chain = zc->chain;
+ choices->chain_len = zc->chain_len;
+ return;
+ }
+ }
+ if ((choices->hash_id = choose_hash(auth_types >> 8)) >= 0) {
+ if (zc->verbose) {
+ fprintf(stderr, "using ECDSA, hash = %d (%s)\n",
+ choices->hash_id,
+ hash_function_name(choices->hash_id));
+ }
+ choices->auth_type = BR_AUTH_ECDSA;
+ choices->chain = zc->chain;
+ choices->chain_len = zc->chain_len;
+ return;
+ }
+ break;
+ }
+ if (zc->verbose) {
+ fprintf(stderr, "no matching client certificate\n");
+ }
+ choices->chain = NULL;
+ choices->chain_len = 0;
+}
+
+static uint32_t
+cc_do_keyx(const br_ssl_client_certificate_class **pctx,
+ unsigned char *data, size_t *len)
+{
+ const br_ec_impl *iec;
+ ccert_context *zc;
+ size_t xoff, xlen;
+ uint32_t r;
+
+ zc = (ccert_context *)pctx;
+ iec = br_ec_get_default();
+ r = iec->mul(data, *len, zc->sk->key.ec.x,
+ zc->sk->key.ec.xlen, zc->sk->key.ec.curve);
+ xoff = iec->xoff(zc->sk->key.ec.curve, &xlen);
+ memmove(data, data + xoff, xlen);
+ *len = xlen;
+ return r;
+}
+
+static size_t
+cc_do_sign(const br_ssl_client_certificate_class **pctx,
+ int hash_id, size_t hv_len, unsigned char *data, size_t len)
+{
+ ccert_context *zc;
+ unsigned char hv[64];
+
+ zc = (ccert_context *)pctx;
+ memcpy(hv, data, hv_len);
+ switch (zc->sk->key_type) {
+ const br_hash_class *hc;
+ const unsigned char *hash_oid;
+ uint32_t x;
+ size_t sig_len;
+
+ case BR_KEYTYPE_RSA:
+ hash_oid = get_hash_oid(hash_id);
+ if (hash_oid == NULL && hash_id != 0) {
+ if (zc->verbose) {
+ fprintf(stderr, "ERROR: cannot RSA-sign with"
+ " unknown hash function: %d\n",
+ hash_id);
+ }
+ return 0;
+ }
+ sig_len = (zc->sk->key.rsa.n_bitlen + 7) >> 3;
+ if (len < sig_len) {
+ if (zc->verbose) {
+ fprintf(stderr, "ERROR: cannot RSA-sign,"
+ " buffer is too small"
+ " (sig=%lu, buf=%lu)\n",
+ (unsigned long)sig_len,
+ (unsigned long)len);
+ }
+ return 0;
+ }
+ x = br_rsa_pkcs1_sign_get_default()(
+ hash_oid, hv, hv_len, &zc->sk->key.rsa, data);
+ if (!x) {
+ if (zc->verbose) {
+ fprintf(stderr, "ERROR: RSA-sign failure\n");
+ }
+ return 0;
+ }
+ return sig_len;
+
+ case BR_KEYTYPE_EC:
+ hc = get_hash_impl(hash_id);
+ if (hc == NULL) {
+ if (zc->verbose) {
+ fprintf(stderr, "ERROR: cannot ECDSA-sign with"
+ " unknown hash function: %d\n",
+ hash_id);
+ }
+ return 0;
+ }
+ if (len < 139) {
+ if (zc->verbose) {
+ fprintf(stderr, "ERROR: cannot ECDSA-sign"
+ " (output buffer = %lu)\n",
+ (unsigned long)len);
+ }
+ return 0;
+ }
+ sig_len = br_ecdsa_sign_asn1_get_default()(
+ br_ec_get_default(), hc, hv, &zc->sk->key.ec, data);
+ if (sig_len == 0) {
+ if (zc->verbose) {
+ fprintf(stderr, "ERROR: ECDSA-sign failure\n");
+ }
+ return 0;
+ }
+ return sig_len;
+
+ default:
+ return 0;
+ }
+}
+
+static const br_ssl_client_certificate_class ccert_vtable = {
+ sizeof(ccert_context),
+ cc_start_name_list,
+ cc_start_name,
+ cc_append_name,
+ cc_end_name,
+ cc_end_name_list,
+ cc_choose,
+ cc_do_keyx,
+ cc_do_sign
+};
+
+static void
+free_alpn(void *alpn)
+{
+ xfree(*(char **)alpn);
+}
+
+static void
+usage_client(void)
+{
+ fprintf(stderr,
+"usage: brssl client server[:port] [ options ]\n");
+ fprintf(stderr,
+"options:\n");
+ fprintf(stderr,
+" -q suppress verbose messages\n");
+ fprintf(stderr,
+" -trace activate extra debug messages (dump of all packets)\n");
+ fprintf(stderr,
+" -sni name use this specific name for SNI\n");
+ fprintf(stderr,
+" -nosni do not send any SNI\n");
+ fprintf(stderr,
+" -mono use monodirectional buffering\n");
+ fprintf(stderr,
+" -buf length set the I/O buffer length (in bytes)\n");
+ fprintf(stderr,
+" -CA file add certificates in 'file' to trust anchors\n");
+ fprintf(stderr,
+" -cert file set client certificate chain\n");
+ fprintf(stderr,
+" -key file set client private key (for certificate authentication)\n");
+ fprintf(stderr,
+" -nostaticecdh prohibit full-static ECDH (client certificate)\n");
+ fprintf(stderr,
+" -list list supported names (protocols, algorithms...)\n");
+ fprintf(stderr,
+" -vmin name set minimum supported version (default: TLS-1.0)\n");
+ fprintf(stderr,
+" -vmax name set maximum supported version (default: TLS-1.2)\n");
+ fprintf(stderr,
+" -cs names set list of supported cipher suites (comma-separated)\n");
+ fprintf(stderr,
+" -hf names add support for some hash functions (comma-separated)\n");
+ fprintf(stderr,
+" -minhello len set minimum ClientHello length (in bytes)\n");
+ fprintf(stderr,
+" -fallback send the TLS_FALLBACK_SCSV (i.e. claim a downgrade)\n");
+ fprintf(stderr,
+" -noreneg prohibit renegotiations\n");
+ fprintf(stderr,
+" -alpn name add protocol name to list of protocols (ALPN extension)\n");
+ fprintf(stderr,
+" -strictalpn fail on ALPN mismatch\n");
+}
+
+/* see brssl.h */
+int
+do_client(int argc, char *argv[])
+{
+ int retcode;
+ int verbose;
+ int trace;
+ int i, bidi;
+ const char *server_name;
+ char *host;
+ char *port;
+ const char *sni;
+ anchor_list anchors = VEC_INIT;
+ unsigned vmin, vmax;
+ VECTOR(char *) alpn_names = VEC_INIT;
+ cipher_suite *suites;
+ size_t num_suites;
+ uint16_t *suite_ids;
+ unsigned hfuns;
+ size_t u;
+ br_ssl_client_context cc;
+ br_x509_minimal_context xc;
+ x509_noanchor_context xwc;
+ const br_hash_class *dnhash;
+ ccert_context zc;
+ br_x509_certificate *chain;
+ size_t chain_len;
+ private_key *sk;
+ int nostaticecdh;
+ unsigned char *iobuf;
+ size_t iobuf_len;
+ size_t minhello_len;
+ int fallback;
+ uint32_t flags;
+ SOCKET fd;
+
+ retcode = 0;
+ verbose = 1;
+ trace = 0;
+ server_name = NULL;
+ host = NULL;
+ port = NULL;
+ sni = NULL;
+ bidi = 1;
+ vmin = 0;
+ vmax = 0;
+ suites = NULL;
+ num_suites = 0;
+ hfuns = 0;
+ suite_ids = NULL;
+ chain = NULL;
+ chain_len = 0;
+ sk = NULL;
+ nostaticecdh = 0;
+ iobuf = NULL;
+ iobuf_len = 0;
+ minhello_len = (size_t)-1;
+ fallback = 0;
+ flags = 0;
+ fd = INVALID_SOCKET;
+ for (i = 0; i < argc; i ++) {
+ const char *arg;
+
+ arg = argv[i];
+ if (arg[0] != '-') {
+ if (server_name != NULL) {
+ fprintf(stderr,
+ "ERROR: duplicate server name\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ server_name = arg;
+ continue;
+ }
+ if (eqstr(arg, "-v") || eqstr(arg, "-verbose")) {
+ verbose = 1;
+ } else if (eqstr(arg, "-q") || eqstr(arg, "-quiet")) {
+ verbose = 0;
+ } else if (eqstr(arg, "-trace")) {
+ trace = 1;
+ } else if (eqstr(arg, "-sni")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-sni'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ if (sni != NULL) {
+ fprintf(stderr, "ERROR: duplicate SNI\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ sni = argv[i];
+ } else if (eqstr(arg, "-nosni")) {
+ if (sni != NULL) {
+ fprintf(stderr, "ERROR: duplicate SNI\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ sni = "";
+ } else if (eqstr(arg, "-mono")) {
+ bidi = 0;
+ } else if (eqstr(arg, "-buf")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-buf'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ arg = argv[i];
+ if (iobuf_len != 0) {
+ fprintf(stderr,
+ "ERROR: duplicate I/O buffer length\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ iobuf_len = parse_size(arg);
+ if (iobuf_len == (size_t)-1) {
+ usage_client();
+ goto client_exit_error;
+ }
+ } else if (eqstr(arg, "-CA")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-CA'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ arg = argv[i];
+ if (read_trust_anchors(&anchors, arg) == 0) {
+ usage_client();
+ goto client_exit_error;
+ }
+ } else if (eqstr(arg, "-cert")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-cert'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ if (chain != NULL) {
+ fprintf(stderr,
+ "ERROR: duplicate certificate chain\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ arg = argv[i];
+ chain = read_certificates(arg, &chain_len);
+ if (chain == NULL || chain_len == 0) {
+ goto client_exit_error;
+ }
+ } else if (eqstr(arg, "-key")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-key'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ if (sk != NULL) {
+ fprintf(stderr,
+ "ERROR: duplicate private key\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ arg = argv[i];
+ sk = read_private_key(arg);
+ if (sk == NULL) {
+ goto client_exit_error;
+ }
+ } else if (eqstr(arg, "-nostaticecdh")) {
+ nostaticecdh = 1;
+ } else if (eqstr(arg, "-list")) {
+ list_names();
+ goto client_exit;
+ } else if (eqstr(arg, "-vmin")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-vmin'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ arg = argv[i];
+ if (vmin != 0) {
+ fprintf(stderr,
+ "ERROR: duplicate minimum version\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ vmin = parse_version(arg, strlen(arg));
+ if (vmin == 0) {
+ fprintf(stderr,
+ "ERROR: unrecognised version '%s'\n",
+ arg);
+ usage_client();
+ goto client_exit_error;
+ }
+ } else if (eqstr(arg, "-vmax")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-vmax'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ arg = argv[i];
+ if (vmax != 0) {
+ fprintf(stderr,
+ "ERROR: duplicate maximum version\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ vmax = parse_version(arg, strlen(arg));
+ if (vmax == 0) {
+ fprintf(stderr,
+ "ERROR: unrecognised version '%s'\n",
+ arg);
+ usage_client();
+ goto client_exit_error;
+ }
+ } else if (eqstr(arg, "-cs")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-cs'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ arg = argv[i];
+ if (suites != NULL) {
+ fprintf(stderr, "ERROR: duplicate list"
+ " of cipher suites\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ suites = parse_suites(arg, &num_suites);
+ if (suites == NULL) {
+ usage_client();
+ goto client_exit_error;
+ }
+ } else if (eqstr(arg, "-hf")) {
+ unsigned x;
+
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-hf'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ arg = argv[i];
+ x = parse_hash_functions(arg);
+ if (x == 0) {
+ usage_client();
+ goto client_exit_error;
+ }
+ hfuns |= x;
+ } else if (eqstr(arg, "-minhello")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-minhello'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ arg = argv[i];
+ if (minhello_len != (size_t)-1) {
+ fprintf(stderr, "ERROR: duplicate minimum"
+ " ClientHello length\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ minhello_len = parse_size(arg);
+ /*
+ * Minimum ClientHello length must fit on 16 bits.
+ */
+ if (minhello_len == (size_t)-1
+ || (((minhello_len >> 12) >> 4) != 0))
+ {
+ usage_client();
+ goto client_exit_error;
+ }
+ } else if (eqstr(arg, "-fallback")) {
+ fallback = 1;
+ } else if (eqstr(arg, "-noreneg")) {
+ flags |= BR_OPT_NO_RENEGOTIATION;
+ } else if (eqstr(arg, "-alpn")) {
+ if (++ i >= argc) {
+ fprintf(stderr,
+ "ERROR: no argument for '-alpn'\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ VEC_ADD(alpn_names, xstrdup(argv[i]));
+ } else if (eqstr(arg, "-strictalpn")) {
+ flags |= BR_OPT_FAIL_ON_ALPN_MISMATCH;
+ } else {
+ fprintf(stderr, "ERROR: unknown option: '%s'\n", arg);
+ usage_client();
+ goto client_exit_error;
+ }
+ }
+ if (server_name == NULL) {
+ fprintf(stderr, "ERROR: no server name/address provided\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ for (u = strlen(server_name); u > 0; u --) {
+ int c = server_name[u - 1];
+ if (c == ':') {
+ break;
+ }
+ if (c < '0' || c > '9') {
+ u = 0;
+ break;
+ }
+ }
+ if (u == 0) {
+ host = xstrdup(server_name);
+ port = xstrdup("443");
+ } else {
+ port = xstrdup(server_name + u);
+ host = xmalloc(u);
+ memcpy(host, server_name, u - 1);
+ host[u - 1] = 0;
+ }
+ if (sni == NULL) {
+ sni = host;
+ }
+
+ if (chain == NULL && sk != NULL) {
+ fprintf(stderr, "ERROR: private key specified, but"
+ " no certificate chain\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ if (chain != NULL && sk == NULL) {
+ fprintf(stderr, "ERROR: certificate chain specified, but"
+ " no private key\n");
+ usage_client();
+ goto client_exit_error;
+ }
+
+ if (vmin == 0) {
+ vmin = BR_TLS10;
+ }
+ if (vmax == 0) {
+ vmax = BR_TLS12;
+ }
+ if (vmax < vmin) {
+ fprintf(stderr, "ERROR: impossible minimum/maximum protocol"
+ " version combination\n");
+ usage_client();
+ goto client_exit_error;
+ }
+ if (suites == NULL) {
+ num_suites = 0;
+
+ for (u = 0; cipher_suites[u].name; u ++) {
+ if ((cipher_suites[u].req & REQ_TLS12) == 0
+ || vmax >= BR_TLS12)
+ {
+ num_suites ++;
+ }
+ }
+ suites = xmalloc(num_suites * sizeof *suites);
+ num_suites = 0;
+ for (u = 0; cipher_suites[u].name; u ++) {
+ if ((cipher_suites[u].req & REQ_TLS12) == 0
+ || vmax >= BR_TLS12)
+ {
+ suites[num_suites ++] = cipher_suites[u];
+ }
+ }
+ }
+ if (hfuns == 0) {
+ hfuns = (unsigned)-1;
+ }
+ if (iobuf_len == 0) {
+ if (bidi) {
+ iobuf_len = BR_SSL_BUFSIZE_BIDI;
+ } else {
+ iobuf_len = BR_SSL_BUFSIZE_MONO;
+ }
+ }
+ iobuf = xmalloc(iobuf_len);
+
+ /*
+ * Compute implementation requirements and inject implementations.
+ */
+ suite_ids = xmalloc((num_suites + 1) * sizeof *suite_ids);
+ br_ssl_client_zero(&cc);
+ br_ssl_engine_set_versions(&cc.eng, vmin, vmax);
+ dnhash = NULL;
+ for (u = 0; hash_functions[u].name; u ++) {
+ const br_hash_class *hc;
+ int id;
+
+ hc = hash_functions[u].hclass;
+ id = (hc->desc >> BR_HASHDESC_ID_OFF) & BR_HASHDESC_ID_MASK;
+ if ((hfuns & ((unsigned)1 << id)) != 0) {
+ dnhash = hc;
+ }
+ }
+ if (dnhash == NULL) {
+ fprintf(stderr, "ERROR: no supported hash function\n");
+ goto client_exit_error;
+ }
+ br_x509_minimal_init(&xc, dnhash,
+ &VEC_ELT(anchors, 0), VEC_LEN(anchors));
+ if (vmin <= BR_TLS11) {
+ if (!(hfuns & (1 << br_md5_ID))) {
+ fprintf(stderr, "ERROR: TLS 1.0 and 1.1 need MD5\n");
+ goto client_exit_error;
+ }
+ if (!(hfuns & (1 << br_sha1_ID))) {
+ fprintf(stderr, "ERROR: TLS 1.0 and 1.1 need SHA-1\n");
+ goto client_exit_error;
+ }
+ }
+ for (u = 0; u < num_suites; u ++) {
+ unsigned req;
+
+ req = suites[u].req;
+ suite_ids[u] = suites[u].suite;
+ if ((req & REQ_TLS12) != 0 && vmax < BR_TLS12) {
+ fprintf(stderr,
+ "ERROR: cipher suite %s requires TLS 1.2\n",
+ suites[u].name);
+ goto client_exit_error;
+ }
+ if ((req & REQ_SHA1) != 0 && !(hfuns & (1 << br_sha1_ID))) {
+ fprintf(stderr,
+ "ERROR: cipher suite %s requires SHA-1\n",
+ suites[u].name);
+ goto client_exit_error;
+ }
+ if ((req & REQ_SHA256) != 0 && !(hfuns & (1 << br_sha256_ID))) {
+ fprintf(stderr,
+ "ERROR: cipher suite %s requires SHA-256\n",
+ suites[u].name);
+ goto client_exit_error;
+ }
+ if ((req & REQ_SHA384) != 0 && !(hfuns & (1 << br_sha384_ID))) {
+ fprintf(stderr,
+ "ERROR: cipher suite %s requires SHA-384\n",
+ suites[u].name);
+ goto client_exit_error;
+ }
+ /* TODO: algorithm implementation selection */
+ if ((req & REQ_AESCBC) != 0) {
+ br_ssl_engine_set_default_aes_cbc(&cc.eng);
+ }
+ if ((req & REQ_AESCCM) != 0) {
+ br_ssl_engine_set_default_aes_ccm(&cc.eng);
+ }
+ if ((req & REQ_AESGCM) != 0) {
+ br_ssl_engine_set_default_aes_gcm(&cc.eng);
+ }
+ if ((req & REQ_CHAPOL) != 0) {
+ br_ssl_engine_set_default_chapol(&cc.eng);
+ }
+ if ((req & REQ_3DESCBC) != 0) {
+ br_ssl_engine_set_default_des_cbc(&cc.eng);
+ }
+ if ((req & REQ_RSAKEYX) != 0) {
+ br_ssl_client_set_default_rsapub(&cc);
+ }
+ if ((req & REQ_ECDHE_RSA) != 0) {
+ br_ssl_engine_set_default_ec(&cc.eng);
+ br_ssl_engine_set_default_rsavrfy(&cc.eng);
+ }
+ if ((req & REQ_ECDHE_ECDSA) != 0) {
+ br_ssl_engine_set_default_ecdsa(&cc.eng);
+ }
+ if ((req & REQ_ECDH) != 0) {
+ br_ssl_engine_set_default_ec(&cc.eng);
+ }
+ }
+ if (fallback) {
+ suite_ids[num_suites ++] = 0x5600;
+ }
+ br_ssl_engine_set_suites(&cc.eng, suite_ids, num_suites);
+
+ for (u = 0; hash_functions[u].name; u ++) {
+ const br_hash_class *hc;
+ int id;
+
+ hc = hash_functions[u].hclass;
+ id = (hc->desc >> BR_HASHDESC_ID_OFF) & BR_HASHDESC_ID_MASK;
+ if ((hfuns & ((unsigned)1 << id)) != 0) {
+ br_ssl_engine_set_hash(&cc.eng, id, hc);
+ br_x509_minimal_set_hash(&xc, id, hc);
+ }
+ }
+ if (vmin <= BR_TLS11) {
+ br_ssl_engine_set_prf10(&cc.eng, &br_tls10_prf);
+ }
+ if (vmax >= BR_TLS12) {
+ if ((hfuns & ((unsigned)1 << br_sha256_ID)) != 0) {
+ br_ssl_engine_set_prf_sha256(&cc.eng,
+ &br_tls12_sha256_prf);
+ }
+ if ((hfuns & ((unsigned)1 << br_sha384_ID)) != 0) {
+ br_ssl_engine_set_prf_sha384(&cc.eng,
+ &br_tls12_sha384_prf);
+ }
+ }
+ br_x509_minimal_set_rsa(&xc, br_rsa_pkcs1_vrfy_get_default());
+ br_x509_minimal_set_ecdsa(&xc,
+ br_ec_get_default(), br_ecdsa_vrfy_asn1_get_default());
+
+ /*
+ * If there is no provided trust anchor, then certificate validation
+ * will always fail. In that situation, we use our custom wrapper
+ * that tolerates unknown anchors.
+ */
+ if (VEC_LEN(anchors) == 0) {
+ if (verbose) {
+ fprintf(stderr,
+ "WARNING: no configured trust anchor\n");
+ }
+ x509_noanchor_init(&xwc, &xc.vtable);
+ br_ssl_engine_set_x509(&cc.eng, &xwc.vtable);
+ } else {
+ br_ssl_engine_set_x509(&cc.eng, &xc.vtable);
+ }
+
+ if (minhello_len != (size_t)-1) {
+ br_ssl_client_set_min_clienthello_len(&cc, minhello_len);
+ }
+ br_ssl_engine_set_all_flags(&cc.eng, flags);
+ if (VEC_LEN(alpn_names) != 0) {
+ br_ssl_engine_set_protocol_names(&cc.eng,
+ (const char **)&VEC_ELT(alpn_names, 0),
+ VEC_LEN(alpn_names));
+ }
+
+ if (chain != NULL) {
+ zc.vtable = &ccert_vtable;
+ zc.verbose = verbose;
+ zc.chain = chain;
+ zc.chain_len = chain_len;
+ zc.sk = sk;
+ if (nostaticecdh || sk->key_type != BR_KEYTYPE_EC) {
+ zc.issuer_key_type = 0;
+ } else {
+ zc.issuer_key_type = get_cert_signer_algo(&chain[0]);
+ if (zc.issuer_key_type == 0) {
+ goto client_exit_error;
+ }
+ }
+ br_ssl_client_set_client_certificate(&cc, &zc.vtable);
+ }
+
+ br_ssl_engine_set_buffer(&cc.eng, iobuf, iobuf_len, bidi);
+ br_ssl_client_reset(&cc, sni, 0);
+
+ /*
+ * On Unix systems, we need to avoid SIGPIPE.
+ */
+#ifndef _WIN32
+ signal(SIGPIPE, SIG_IGN);
+#endif
+
+ /*
+ * Connect to the peer.
+ */
+ fd = host_connect(host, port, verbose);
+ if (fd == INVALID_SOCKET) {
+ goto client_exit_error;
+ }
+
+ /*
+ * Run the engine until completion.
+ */
+ if (run_ssl_engine(&cc.eng, fd,
+ (verbose ? RUN_ENGINE_VERBOSE : 0)
+ | (trace ? RUN_ENGINE_TRACE : 0)) != 0)
+ {
+ goto client_exit_error;
+ } else {
+ goto client_exit;
+ }
+
+ /*
+ * Release allocated structures.
+ */
+client_exit:
+ xfree(host);
+ xfree(port);
+ xfree(suites);
+ xfree(suite_ids);
+ VEC_CLEAREXT(anchors, &free_ta_contents);
+ VEC_CLEAREXT(alpn_names, &free_alpn);
+ free_certificates(chain, chain_len);
+ free_private_key(sk);
+ xfree(iobuf);
+ if (fd != INVALID_SOCKET) {
+#ifdef _WIN32
+ closesocket(fd);
+#else
+ close(fd);
+#endif
+ }
+ return retcode;
+
+client_exit_error:
+ retcode = -1;
+ goto client_exit;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 16:57:20 +0000