#include "ssltestlib.h"
+static int tls_dump_new(BIO *bi);
+static int tls_dump_free(BIO *a);
+static int tls_dump_read(BIO *b, char *out, int outl);
+static int tls_dump_write(BIO *b, const char *in, int inl);
+static long tls_dump_ctrl(BIO *b, int cmd, long num, void *ptr);
+static int tls_dump_gets(BIO *bp, char *buf, int size);
+static int tls_dump_puts(BIO *bp, const char *str);
+
+/* Choose a sufficiently large type likely to be unused for this custom BIO */
+# define BIO_TYPE_TLS_DUMP_FILTER (0x80 | BIO_TYPE_FILTER)
+
+# define BIO_TYPE_MEMPACKET_TEST 0x81
+
+static BIO_METHOD *method_tls_dump = NULL;
+static BIO_METHOD *method_mempacket_test = NULL;
+
+/* Note: Not thread safe! */
+const BIO_METHOD *bio_f_tls_dump_filter(void)
+{
+ if (method_tls_dump == NULL) {
+ method_tls_dump = BIO_meth_new(BIO_TYPE_TLS_DUMP_FILTER,
+ "TLS dump filter");
+ if ( method_tls_dump == NULL
+ || !BIO_meth_set_write(method_tls_dump, tls_dump_write)
+ || !BIO_meth_set_read(method_tls_dump, tls_dump_read)
+ || !BIO_meth_set_puts(method_tls_dump, tls_dump_puts)
+ || !BIO_meth_set_gets(method_tls_dump, tls_dump_gets)
+ || !BIO_meth_set_ctrl(method_tls_dump, tls_dump_ctrl)
+ || !BIO_meth_set_create(method_tls_dump, tls_dump_new)
+ || !BIO_meth_set_destroy(method_tls_dump, tls_dump_free))
+ return NULL;
+ }
+ return method_tls_dump;
+}
+
+void bio_f_tls_dump_filter_free(void)
+{
+ BIO_meth_free(method_tls_dump);
+}
+
+static int tls_dump_new(BIO *bio)
+{
+ BIO_set_init(bio, 1);
+ return 1;
+}
+
+static int tls_dump_free(BIO *bio)
+{
+ BIO_set_init(bio, 0);
+
+ return 1;
+}
+
+static void copy_flags(BIO *bio)
+{
+ int flags;
+ BIO *next = BIO_next(bio);
+
+ flags = BIO_test_flags(next, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS);
+ BIO_clear_flags(bio, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS);
+ BIO_set_flags(bio, flags);
+}
+
+#define RECORD_CONTENT_TYPE 0
+#define RECORD_VERSION_HI 1
+#define RECORD_VERSION_LO 2
+#define RECORD_EPOCH_HI 3
+#define RECORD_EPOCH_LO 4
+#define RECORD_SEQUENCE_START 5
+#define RECORD_SEQUENCE_END 10
+#define RECORD_LEN_HI 11
+#define RECORD_LEN_LO 12
+
+#define MSG_TYPE 0
+#define MSG_LEN_HI 1
+#define MSG_LEN_MID 2
+#define MSG_LEN_LO 3
+#define MSG_SEQ_HI 4
+#define MSG_SEQ_LO 5
+#define MSG_FRAG_OFF_HI 6
+#define MSG_FRAG_OFF_MID 7
+#define MSG_FRAG_OFF_LO 8
+#define MSG_FRAG_LEN_HI 9
+#define MSG_FRAG_LEN_MID 10
+#define MSG_FRAG_LEN_LO 11
+
+
+static void dump_data(const char *data, int len)
+{
+ int rem, i, content, reclen, msglen, fragoff, fraglen, epoch;
+ unsigned char *rec;
+
+ printf("---- START OF PACKET ----\n");
+
+ rem = len;
+ rec = (unsigned char *)data;
+
+ while (rem > 0) {
+ if (rem != len)
+ printf("*\n");
+ printf("*---- START OF RECORD ----\n");
+ if (rem < DTLS1_RT_HEADER_LENGTH) {
+ printf("*---- RECORD TRUNCATED ----\n");
+ break;
+ }
+ content = rec[RECORD_CONTENT_TYPE];
+ printf("** Record Content-type: %d\n", content);
+ printf("** Record Version: %02x%02x\n",
+ rec[RECORD_VERSION_HI], rec[RECORD_VERSION_LO]);
+ epoch = (rec[RECORD_EPOCH_HI] << 8) | rec[RECORD_EPOCH_LO];
+ printf("** Record Epoch: %d\n", epoch);
+ printf("** Record Sequence: ");
+ for (i = RECORD_SEQUENCE_START; i <= RECORD_SEQUENCE_END; i++)
+ printf("%02x", rec[i]);
+ reclen = (rec[RECORD_LEN_HI] << 8) | rec[RECORD_LEN_LO];
+ printf("\n** Record Length: %d\n", reclen);
+
+ /* Now look at message */
+ rec += DTLS1_RT_HEADER_LENGTH;
+ rem -= DTLS1_RT_HEADER_LENGTH;
+ if (content == SSL3_RT_HANDSHAKE) {
+ printf("**---- START OF HANDSHAKE MESSAGE FRAGMENT ----\n");
+ if (epoch > 0) {
+ printf("**---- HANDSHAKE MESSAGE FRAGMENT ENCRYPTED ----\n");
+ } else if (rem < DTLS1_HM_HEADER_LENGTH
+ || reclen < DTLS1_HM_HEADER_LENGTH) {
+ printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
+ } else {
+ printf("*** Message Type: %d\n", rec[MSG_TYPE]);
+ msglen = (rec[MSG_LEN_HI] << 16) | (rec[MSG_LEN_MID] << 8)
+ | rec[MSG_LEN_LO];
+ printf("*** Message Length: %d\n", msglen);
+ printf("*** Message sequence: %d\n",
+ (rec[MSG_SEQ_HI] << 8) | rec[MSG_SEQ_LO]);
+ fragoff = (rec[MSG_FRAG_OFF_HI] << 16)
+ | (rec[MSG_FRAG_OFF_MID] << 8)
+ | rec[MSG_FRAG_OFF_LO];
+ printf("*** Message Fragment offset: %d\n", fragoff);
+ fraglen = (rec[MSG_FRAG_LEN_HI] << 16)
+ | (rec[MSG_FRAG_LEN_MID] << 8)
+ | rec[MSG_FRAG_LEN_LO];
+ printf("*** Message Fragment len: %d\n", fraglen);
+ if (fragoff + fraglen > msglen)
+ printf("***---- HANDSHAKE MESSAGE FRAGMENT INVALID ----\n");
+ else if(reclen < fraglen)
+ printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
+ else
+ printf("**---- END OF HANDSHAKE MESSAGE FRAGMENT ----\n");
+ }
+ }
+ if (rem < reclen) {
+ printf("*---- RECORD TRUNCATED ----\n");
+ rem = 0;
+ } else {
+ rec += reclen;
+ rem -= reclen;
+ printf("*---- END OF RECORD ----\n");
+ }
+ }
+ printf("---- END OF PACKET ----\n\n");
+ fflush(stdout);
+}
+
+static int tls_dump_read(BIO *bio, char *out, int outl)
+{
+ int ret;
+ BIO *next = BIO_next(bio);
+
+ ret = BIO_read(next, out, outl);
+ copy_flags(bio);
+
+ if (ret > 0) {
+ dump_data(out, ret);
+ }
+
+ return ret;
+}
+
+static int tls_dump_write(BIO *bio, const char *in, int inl)
+{
+ int ret;
+ BIO *next = BIO_next(bio);
+
+ ret = BIO_write(next, in, inl);
+ copy_flags(bio);
+
+ return ret;
+}
+
+static long tls_dump_ctrl(BIO *bio, int cmd, long num, void *ptr)
+{
+ long ret;
+ BIO *next = BIO_next(bio);
+
+ if (next == NULL)
+ return 0;
+
+ switch (cmd) {
+ case BIO_CTRL_DUP:
+ ret = 0L;
+ break;
+ default:
+ ret = BIO_ctrl(next, cmd, num, ptr);
+ break;
+ }
+ return ret;
+}
+
+static int tls_dump_gets(BIO *bio, char *buf, int size)
+{
+ /* We don't support this - not needed anyway */
+ return -1;
+}
+
+static int tls_dump_puts(BIO *bio, const char *str)
+{
+ return tls_dump_write(bio, str, strlen(str));
+}
+
int create_ssl_ctx_pair(const SSL_METHOD *sm, const SSL_METHOD *cm,
SSL_CTX **sctx, SSL_CTX **cctx, char *certfile,
char *privkeyfile)
projects / oweals / openssl.git / commitdiff