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nss: Improve info message when falling back SSL protocol

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Use descriptive text strings rather than decimal numbers.
This commit is contained in:
Paul Howarth 2018-12-04 10:48:32 +00:00 committed by Daniel Stenberg
parent 6848ea585b
commit 71a1442eb2
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GPG Key ID: 5CC908FDB71E12C2
1 changed files with 34 additions and 2 deletions
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36
lib/vtls/nss.c
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@ -246,6 +246,32 @@ static void nss_print_error_message(struct Curl_easy *data, PRUint32 err)
failf(data, "%s", PR_ErrorToString(err, PR_LANGUAGE_I_DEFAULT));
}
static char *nss_sslver_to_name(PRUint16 nssver)
{
switch(nssver) {
case SSL_LIBRARY_VERSION_2:
return strdup("SSLv2");
case SSL_LIBRARY_VERSION_3_0:
return strdup("SSLv3");
case SSL_LIBRARY_VERSION_TLS_1_0:
return strdup("TLSv1.0");
#ifdef SSL_LIBRARY_VERSION_TLS_1_1
case SSL_LIBRARY_VERSION_TLS_1_1:
return strdup("TLSv1.1");
#endif
#ifdef SSL_LIBRARY_VERSION_TLS_1_2
case SSL_LIBRARY_VERSION_TLS_1_2:
return strdup("TLSv1.2");
#endif
#ifdef SSL_LIBRARY_VERSION_TLS_1_3
case SSL_LIBRARY_VERSION_TLS_1_3:
return strdup("TLSv1.3");
#endif
default:
return curl_maprintf("0x%04x", nssver);
}
}
static SECStatus set_ciphers(struct Curl_easy *data, PRFileDesc * model,
char *cipher_list)
{
@ -1837,8 +1863,14 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
&sslver_supported) != SECSuccess)
goto error;
if(sslver_supported.max < sslver.max && sslver_supported.max >= sslver.min) {
infof(data, "Falling back (from %d) to max supported SSL version (%d)\n",
sslver.max, sslver_supported.max);
char *sslver_req_str, *sslver_supp_str;
sslver_req_str = nss_sslver_to_name(sslver.max);
sslver_supp_str = nss_sslver_to_name(sslver_supported.max);
if(sslver_req_str && sslver_supp_str)
infof(data, "Falling back from %s to max supported SSL version (%s)\n",
sslver_req_str, sslver_supp_str);
free(sslver_req_str);
free(sslver_supp_str);
sslver.max = sslver_supported.max;
}
if(SSL_VersionRangeSet(model, &sslver) != SECSuccess)