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Changed the code to reserve bytes for hostname only if needed.

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This commit is contained in:
Slavey Karadzhov
2016-02-22 10:02:40 +01:00
parent 63da8991c2
commit 1154d0a985
4 changed files with 35 additions and 23 deletions
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30
ssl/tls1_clnt.c
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@ -221,23 +221,23 @@ static int send_client_hello(SSL *ssl)
buf[offset++] = 1; /* no compression */
buf[offset++] = 0;
if (ssl->host_name[0] != 0) {
unsigned int host_len = strnlen((char*) ssl->host_name, 255);
if (ssl->host_name != NULL) {
unsigned int host_len = strlen(ssl->host_name);
buf[offset++] = 0;
buf[offset++] = host_len+9; /* extensions length */
buf[offset++] = 0;
buf[offset++] = host_len+9; /* extensions length */
buf[offset++] = 0;
buf[offset++] = 0; /* server_name(0) (65535) */
buf[offset++] = 0;
buf[offset++] = host_len+5; /* server_name length */
buf[offset++] = 0;
buf[offset++] = host_len+3; /* server_list length */
buf[offset++] = 0; /* host_name(0) (255) */
buf[offset++] = 0;
buf[offset++] = host_len; /* host_name length */
strncpy((char*) &buf[offset], ssl->host_name, host_len);
offset += host_len;
buf[offset++] = 0;
buf[offset++] = 0; /* server_name(0) (65535) */
buf[offset++] = 0;
buf[offset++] = host_len+5; /* server_name length */
buf[offset++] = 0;
buf[offset++] = host_len+3; /* server_list length */
buf[offset++] = 0; /* host_name(0) (255) */
buf[offset++] = 0;
buf[offset++] = host_len; /* host_name length */
strncpy((char*) &buf[offset], ssl->host_name, host_len);
offset += host_len;
}
buf[3] = offset - 4; /* handshake size */