lobo/isync
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

attempt to improve ssl error handling (again)

Browse Source 
the error queue may contain multiple errors, so make sure to drain it
completely. also, don't try to fall back to errno in case of
SSL_ERROR_SSL.
This commit is contained in:
Oswald Buddenhagen 2019-07-28 11:35:02 +02:00
parent 91abf2b830
commit 5f908b7672
2 changed files with 48 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/common.h
View File

@ -33,6 +33,7 @@
typedef unsigned char uchar;
typedef unsigned short ushort;
typedef unsigned int uint;
typedef unsigned long ulong;
#define as(ar) (sizeof(ar)/sizeof(ar[0]))

55
src/socket.c
View File

@ -63,6 +63,34 @@ socket_fail( conn_t *conn )
}
#ifdef HAVE_LIBSSL
static void ATTR_PRINTFLIKE(1, 2)
print_ssl_errors( const char *fmt, ... )
{
char *action;
va_list va;
ulong err;
va_start( va, fmt );
nfvasprintf( &action, fmt, va );
va_end( va );
while ((err = ERR_get_error()))
error( "Error while %s: %s\n", action, ERR_error_string( err, 0 ) );
free( action );
}
static int
print_ssl_socket_errors( const char *func, conn_t *conn )
{
ulong err;
int num = 0;
while ((err = ERR_get_error())) {
error( "Socket error: secure %s %s: %s\n", func, conn->name, ERR_error_string( err, 0 ) );
num++;
}
return num;
}
static int
ssl_return( const char *func, conn_t *conn, int ret )
{
@ -76,9 +104,12 @@ ssl_return( const char *func, conn_t *conn, int ret )
FALLTHROUGH
case SSL_ERROR_WANT_READ:
return 0;
case SSL_ERROR_SYSCALL:
case SSL_ERROR_SSL:
if (!(err = ERR_get_error())) {
print_ssl_socket_errors( func, conn );
break;
case SSL_ERROR_SYSCALL:
if (print_ssl_socket_errors( func, conn ))
break;
if (ret == 0) {
case SSL_ERROR_ZERO_RETURN:
/* Callers take the short path out, so signal higher layers from here. */
@ -87,9 +118,6 @@ ssl_return( const char *func, conn_t *conn, int ret )
return -1;
}
sys_error( "Socket error: secure %s %s", func, conn->name );
} else {
error( "Socket error: secure %s %s: %s\n", func, conn->name, ERR_error_string( err, 0 ) );
}
break;
default:
error( "Socket error: secure %s %s: unhandled SSL error %d\n", func, conn->name, err );
@ -233,25 +261,24 @@ init_ssl_ctx( const server_conf_t *conf )
SSL_CTX_set_options( mconf->SSLContext, options );
if (conf->cert_file && !SSL_CTX_load_verify_locations( mconf->SSLContext, conf->cert_file, 0 )) {
error( "Error while loading certificate file '%s': %s\n",
conf->cert_file, ERR_error_string( ERR_get_error(), 0 ) );
print_ssl_errors( "loading certificate file '%s'", conf->cert_file );
return 0;
}
mconf->trusted_certs = (_STACK *)sk_X509_OBJECT_dup( X509_STORE_get0_objects( SSL_CTX_get_cert_store( mconf->SSLContext ) ) );
if (mconf->system_certs && !SSL_CTX_set_default_verify_paths( mconf->SSLContext ))
warn( "Warning: Unable to load default certificate files: %s\n",
ERR_error_string( ERR_get_error(), 0 ) );
if (mconf->system_certs && !SSL_CTX_set_default_verify_paths( mconf->SSLContext )) {
ulong err;
while ((err = ERR_get_error()))
warn( "Warning: Unable to load default certificate files: %s\n", ERR_error_string( err, 0 ) );
}
SSL_CTX_set_verify( mconf->SSLContext, SSL_VERIFY_NONE, NULL );
if (conf->client_certfile && !SSL_CTX_use_certificate_chain_file( mconf->SSLContext, conf->client_certfile)) {
error( "Error while loading client certificate file '%s': %s\n",
conf->client_certfile, ERR_error_string( ERR_get_error(), 0 ) );
print_ssl_errors( "loading client certificate file '%s'", conf->client_certfile );
return 0;
}
if (conf->client_keyfile && !SSL_CTX_use_PrivateKey_file( mconf->SSLContext, conf->client_keyfile, SSL_FILETYPE_PEM)) {
error( "Error while loading client private key '%s': %s\n",
conf->client_keyfile, ERR_error_string( ERR_get_error(), 0 ) );
print_ssl_errors( "loading client private key '%s'", conf->client_keyfile );
return 0;
}