Implemented the parts of Patrick Monnerat's OS/400 patch that introduces
support for the OS/400 Secure Sockets Layer library
This commit is contained in:
Daniel Stenberg
496
lib/qssl.c
Normal file
496
lib/qssl.c
Normal file
@@ -0,0 +1,496 @@
|
||||
/***************************************************************************
|
||||
* _ _ ____ _
|
||||
* Project ___| | | | _ \| |
|
||||
* / __| | | | |_) | |
|
||||
* | (__| |_| | _ <| |___
|
||||
* \___|\___/|_| \_\_____|
|
||||
*
|
||||
* Copyright (C) 1998 - 2007, Daniel Stenberg, <daniel@haxx.se>, et al.
|
||||
*
|
||||
* This software is licensed as described in the file COPYING, which
|
||||
* you should have received as part of this distribution. The terms
|
||||
* are also available at http://curl.haxx.se/docs/copyright.html.
|
||||
*
|
||||
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
||||
* copies of the Software, and permit persons to whom the Software is
|
||||
* furnished to do so, under the terms of the COPYING file.
|
||||
*
|
||||
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||||
* KIND, either express or implied.
|
||||
*
|
||||
* $Id$
|
||||
***************************************************************************/
|
||||
|
||||
#include "setup.h"
|
||||
|
||||
#ifdef USE_QSOSSL
|
||||
#include <qsossl.h>
|
||||
#include <errno.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <curl/curl.h>
|
||||
#include "urldata.h"
|
||||
#include "sendf.h"
|
||||
#include "qssl.h"
|
||||
#include "sslgen.h"
|
||||
#include "connect.h" /* for the connect timeout */
|
||||
#include "select.h"
|
||||
#include "memory.h"
|
||||
/* The last #include file should be: */
|
||||
#include "memdebug.h"
|
||||
|
||||
|
||||
static bool qsossl_inited = FALSE;
|
||||
|
||||
|
||||
int Curl_qsossl_init(void)
|
||||
|
||||
{
|
||||
/* Nothing to do here. We must have connection data to initialize ssl, so
|
||||
* defer.
|
||||
*/
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
void Curl_qsossl_cleanup(void)
|
||||
|
||||
{
|
||||
/* Nothing to do. */
|
||||
}
|
||||
|
||||
|
||||
static CURLcode Curl_qsossl_init_session(struct SessionHandle * data)
|
||||
|
||||
{
|
||||
int rc;
|
||||
char * certname;
|
||||
SSLInit initstr;
|
||||
SSLInitApp initappstr;
|
||||
|
||||
/* Initialize the job for SSL according to the current parameters.
|
||||
* QsoSSL offers two ways to do it: SSL_Init_Application() that uses an
|
||||
* application identifier to select certificates in the main certificate
|
||||
* store, and SSL_Init() that uses named keyring files and a password.
|
||||
* It is not possible to have different keyrings for the CAs and the
|
||||
* local certificate. We thus use the certificate name to identify the
|
||||
* keyring if given, else the CA file name.
|
||||
* If the key file name is given, it is taken as the password for the
|
||||
* keyring in certificate file.
|
||||
* We first try to SSL_Init_Application(), then SSL_Init() if it failed.
|
||||
*/
|
||||
|
||||
certname = data->set.cert;
|
||||
|
||||
if (!certname) {
|
||||
certname = data->set.ssl.CAfile;
|
||||
|
||||
if (!certname)
|
||||
return CURLE_OK; /* Use previous setup. */
|
||||
}
|
||||
|
||||
memset((char *) &initappstr, 0, sizeof initappstr);
|
||||
initappstr.applicationID = certname;
|
||||
initappstr.applicationIDLen = strlen(certname);
|
||||
initappstr.protocol = SSL_VERSION_CURRENT;
|
||||
initappstr.sessionType = SSL_REGISTERED_AS_CLIENT;
|
||||
rc = SSL_Init_Application(&initappstr);
|
||||
|
||||
if (rc == SSL_ERROR_NOT_REGISTERED) {
|
||||
initstr.keyringFileName = certname;
|
||||
initstr.keyringPassword = data->set.key;
|
||||
initstr.cipherSuiteList = NULL; /* Use default. */
|
||||
initstr.cipherSuiteListLen = 0;
|
||||
rc = SSL_Init(&initstr);
|
||||
}
|
||||
|
||||
switch (rc) {
|
||||
|
||||
case 0: /* No error. */
|
||||
break;
|
||||
|
||||
case SSL_ERROR_IO:
|
||||
failf(data, "SSL_Init() I/O error: %s\n", strerror(errno));
|
||||
return CURLE_SSL_CONNECT_ERROR;
|
||||
|
||||
case SSL_ERROR_BAD_CIPHER_SUITE:
|
||||
return CURLE_SSL_CIPHER;
|
||||
|
||||
case SSL_ERROR_KEYPASSWORD_EXPIRED:
|
||||
case SSL_ERROR_NOT_REGISTERED:
|
||||
return CURLE_SSL_CONNECT_ERROR;
|
||||
|
||||
case SSL_ERROR_NO_KEYRING:
|
||||
return CURLE_SSL_CACERT;
|
||||
|
||||
case SSL_ERROR_CERT_EXPIRED:
|
||||
return CURLE_SSL_CERTPROBLEM;
|
||||
|
||||
default:
|
||||
failf(data, "SSL_Init(): %s\n", SSL_Strerror(rc, NULL));
|
||||
return CURLE_SSL_CONNECT_ERROR;
|
||||
}
|
||||
|
||||
return CURLE_OK;
|
||||
}
|
||||
|
||||
|
||||
static CURLcode Curl_qsossl_create(struct connectdata * conn, int sockindex)
|
||||
|
||||
{
|
||||
SSLHandle * h;
|
||||
struct ssl_connect_data * connssl = &conn->ssl[sockindex];
|
||||
|
||||
h = SSL_Create(conn->sock[sockindex], SSL_ENCRYPT);
|
||||
|
||||
if (!h) {
|
||||
failf(conn->data, "SSL_Create() I/O error: %s\n", strerror(errno));
|
||||
return CURLE_SSL_CONNECT_ERROR;
|
||||
}
|
||||
|
||||
connssl->handle = h;
|
||||
return CURLE_OK;
|
||||
}
|
||||
|
||||
|
||||
static int Curl_qsossl_trap_cert(SSLHandle * h)
|
||||
|
||||
{
|
||||
return 1; /* Accept certificate. */
|
||||
}
|
||||
|
||||
|
||||
static CURLcode Curl_qsossl_handshake(struct connectdata * conn, int sockindex)
|
||||
|
||||
{
|
||||
int rc;
|
||||
struct SessionHandle * data = conn->data;
|
||||
struct ssl_connect_data * connssl = &conn->ssl[sockindex];
|
||||
SSLHandle * h = connssl->handle;
|
||||
long timeout_ms;
|
||||
|
||||
h->exitPgm = NULL;
|
||||
|
||||
if (!data->set.ssl.verifyhost)
|
||||
h->exitPgm = Curl_qsossl_trap_cert;
|
||||
|
||||
if (data->set.connecttimeout) {
|
||||
timeout_ms = data->set.connecttimeout;
|
||||
|
||||
if (data->set.timeout)
|
||||
if (timeout_ms > data->set.timeout)
|
||||
timeout_ms = data->set.timeout;
|
||||
}
|
||||
else if (data->set.timeout)
|
||||
timeout_ms = data->set.timeout;
|
||||
else
|
||||
timeout_ms = DEFAULT_CONNECT_TIMEOUT;
|
||||
|
||||
/* SSL_Handshake() timeout resolution is second, so round up. */
|
||||
|
||||
h->timeout = (timeout_ms + 1000 - 1) / 1000;
|
||||
|
||||
/* Set-up protocol. */
|
||||
|
||||
switch(data->set.ssl.version) {
|
||||
|
||||
default:
|
||||
case CURL_SSLVERSION_DEFAULT:
|
||||
h->protocol = SSL_VERSION_CURRENT;
|
||||
break;
|
||||
|
||||
case CURL_SSLVERSION_TLSv1:
|
||||
h->protocol = TLS_VERSION_1;
|
||||
break;
|
||||
|
||||
case CURL_SSLVERSION_SSLv2:
|
||||
h->protocol = SSL_VERSION_2;
|
||||
break;
|
||||
|
||||
case CURL_SSLVERSION_SSLv3:
|
||||
h->protocol = SSL_VERSION_3;
|
||||
break;
|
||||
}
|
||||
|
||||
rc = SSL_Handshake(h, SSL_HANDSHAKE_AS_CLIENT);
|
||||
|
||||
switch (rc) {
|
||||
|
||||
case 0: /* No error. */
|
||||
break;
|
||||
|
||||
case SSL_ERROR_BAD_CERTIFICATE:
|
||||
case SSL_ERROR_BAD_CERT_SIG:
|
||||
case SSL_ERROR_NOT_TRUSTED_ROOT:
|
||||
return CURLE_SSL_PEER_CERTIFICATE;
|
||||
|
||||
case SSL_ERROR_BAD_CIPHER_SUITE:
|
||||
case SSL_ERROR_NO_CIPHERS:
|
||||
return CURLE_SSL_CIPHER;
|
||||
|
||||
case SSL_ERROR_CERTIFICATE_REJECTED:
|
||||
case SSL_ERROR_CERT_EXPIRED:
|
||||
case SSL_ERROR_NO_CERTIFICATE:
|
||||
return CURLE_SSL_CERTPROBLEM;
|
||||
|
||||
case SSL_ERROR_IO:
|
||||
failf(data, "SSL_Handshake(): %s\n", SSL_Strerror(rc, NULL));
|
||||
return CURLE_SSL_CONNECT_ERROR;
|
||||
|
||||
default:
|
||||
failf(data, "SSL_Init(): %s\n", SSL_Strerror(rc, NULL));
|
||||
return CURLE_SSL_CONNECT_ERROR;
|
||||
}
|
||||
|
||||
return CURLE_OK;
|
||||
}
|
||||
|
||||
|
||||
CURLcode Curl_qsossl_connect(struct connectdata * conn, int sockindex)
|
||||
|
||||
{
|
||||
struct SessionHandle * data = conn->data;
|
||||
struct ssl_connect_data * connssl = &conn->ssl[sockindex];
|
||||
int rc;
|
||||
|
||||
rc = Curl_qsossl_init_session(data);
|
||||
|
||||
if (rc == CURLE_OK) {
|
||||
rc = Curl_qsossl_create(conn, sockindex);
|
||||
|
||||
if (rc == CURLE_OK)
|
||||
rc = Curl_qsossl_handshake(conn, sockindex);
|
||||
else {
|
||||
SSL_Destroy(connssl->handle);
|
||||
connssl->handle = NULL;
|
||||
connssl->use = FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
static int Curl_qsossl_close_one(struct ssl_connect_data * conn,
|
||||
struct SessionHandle * data)
|
||||
|
||||
{
|
||||
int rc;
|
||||
|
||||
if (!conn->handle)
|
||||
return 0;
|
||||
|
||||
rc = SSL_Destroy(conn->handle);
|
||||
|
||||
if(rc) {
|
||||
if (rc == SSL_ERROR_IO) {
|
||||
failf(data, "SSL_Destroy() I/O error: %s\n", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* An SSL error. */
|
||||
failf(data, "SSL_Destroy() returned error %d\n", SSL_Strerror(rc, NULL));
|
||||
return -1;
|
||||
}
|
||||
|
||||
conn->use = FALSE; /* get back to ordinary socket usage */
|
||||
conn->handle = NULL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
void Curl_qsossl_close(struct connectdata * conn)
|
||||
|
||||
{
|
||||
struct SessionHandle * data = conn->data;
|
||||
struct ssl_connect_data * connssl = conn->ssl;
|
||||
|
||||
if(connssl->use)
|
||||
(void) Curl_qsossl_close_one(connssl, data);
|
||||
|
||||
connssl++;
|
||||
|
||||
if(connssl->use)
|
||||
(void) Curl_qsossl_close_one(connssl, data);
|
||||
}
|
||||
|
||||
|
||||
int Curl_qsossl_close_all(struct SessionHandle * data)
|
||||
|
||||
{
|
||||
/* Unimplemented. */
|
||||
(void) data;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int Curl_qsossl_shutdown(struct connectdata * conn, int sockindex)
|
||||
|
||||
{
|
||||
struct ssl_connect_data * connssl = &conn->ssl[sockindex];
|
||||
struct SessionHandle *data = conn->data;
|
||||
ssize_t nread;
|
||||
int what;
|
||||
int rc;
|
||||
char buf[120];
|
||||
|
||||
if (!connssl->handle)
|
||||
return 0;
|
||||
|
||||
if (data->set.ftp_ccc != CURLFTPSSL_CCC_ACTIVE)
|
||||
return 0;
|
||||
|
||||
if (Curl_qsossl_close_one(connssl, data))
|
||||
return -1;
|
||||
|
||||
rc = 0;
|
||||
|
||||
what = Curl_socket_ready(conn->sock[sockindex],
|
||||
CURL_SOCKET_BAD, SSL_SHUTDOWN_TIMEOUT);
|
||||
|
||||
for (;;) {
|
||||
if (what < 0) {
|
||||
/* anything that gets here is fatally bad */
|
||||
failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
||||
rc = -1;
|
||||
break;
|
||||
}
|
||||
|
||||
if (!what) { /* timeout */
|
||||
failf(data, "SSL shutdown timeout");
|
||||
break;
|
||||
}
|
||||
|
||||
/* Something to read, let's do it and hope that it is the close
|
||||
notify alert from the server. No way to SSL_Read now, so use read(). */
|
||||
|
||||
nread = read(conn->sock[sockindex], buf, sizeof(buf));
|
||||
|
||||
if (nread < 0) {
|
||||
failf(data, "read: %s\n", strerror(errno));
|
||||
rc = -1;
|
||||
}
|
||||
|
||||
if (nread <= 0)
|
||||
break;
|
||||
|
||||
what = Curl_socket_ready(conn->sock[sockindex], CURL_SOCKET_BAD, 0);
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
ssize_t Curl_qsossl_send(struct connectdata * conn, int sockindex, void * mem,
|
||||
size_t len)
|
||||
|
||||
{
|
||||
/* SSL_Write() is said to return 'int' while write() and send() returns
|
||||
'size_t' */
|
||||
int rc;
|
||||
|
||||
rc = SSL_Write(conn->ssl[sockindex].handle, mem, (int) len);
|
||||
|
||||
if(rc < 0) {
|
||||
switch(rc) {
|
||||
|
||||
case SSL_ERROR_BAD_STATE:
|
||||
/* The operation did not complete; the same SSL I/O function
|
||||
should be called again later. This is basicly an EWOULDBLOCK
|
||||
equivalent. */
|
||||
return 0;
|
||||
|
||||
case SSL_ERROR_IO:
|
||||
switch (errno) {
|
||||
case EWOULDBLOCK:
|
||||
case EINTR:
|
||||
return 0;
|
||||
}
|
||||
|
||||
failf(conn->data, "SSL_Write() I/O error: %s\n", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* An SSL error. */
|
||||
failf(conn->data, "SSL_Write() returned error %d\n",
|
||||
SSL_Strerror(rc, NULL));
|
||||
return -1;
|
||||
}
|
||||
|
||||
return (ssize_t) rc; /* number of bytes */
|
||||
}
|
||||
|
||||
|
||||
ssize_t Curl_qsossl_recv(struct connectdata * conn, int num, char * buf,
|
||||
size_t buffersize, bool * wouldblock)
|
||||
|
||||
{
|
||||
char error_buffer[120]; /* OpenSSL documents that this must be at
|
||||
least 120 bytes long. */
|
||||
unsigned long sslerror;
|
||||
int nread;
|
||||
|
||||
nread = SSL_Read(conn->ssl[num].handle, buf, (int) buffersize);
|
||||
*wouldblock = FALSE;
|
||||
|
||||
if(nread < 0) {
|
||||
/* failed SSL_read */
|
||||
|
||||
switch (nread) {
|
||||
|
||||
case SSL_ERROR_BAD_STATE:
|
||||
/* there's data pending, re-invoke SSL_Read(). */
|
||||
*wouldblock = TRUE;
|
||||
return -1; /* basically EWOULDBLOCK */
|
||||
|
||||
case SSL_ERROR_IO:
|
||||
switch (errno) {
|
||||
case EWOULDBLOCK:
|
||||
*wouldblock = TRUE;
|
||||
return -1;
|
||||
}
|
||||
|
||||
failf(conn->data, "SSL_Read() I/O error: %s\n", strerror(errno));
|
||||
return -1;
|
||||
|
||||
default:
|
||||
failf(conn->data, "SSL read error: %s\n", SSL_Strerror(nread, NULL));
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
return (ssize_t) nread;
|
||||
}
|
||||
|
||||
|
||||
size_t Curl_qsossl_version(char * buffer, size_t size)
|
||||
|
||||
{
|
||||
strncpy(buffer, "IBM OS/400 SSL", size);
|
||||
return strlen(buffer);
|
||||
}
|
||||
|
||||
|
||||
int Curl_qsossl_check_cxn(struct connectdata * cxn)
|
||||
|
||||
{
|
||||
int err;
|
||||
int errlen;
|
||||
|
||||
/* The only thing that can be tested here is at the socket level. */
|
||||
|
||||
if (!cxn->ssl[FIRSTSOCKET].handle)
|
||||
return 0; /* connection has been closed */
|
||||
|
||||
err = 0;
|
||||
errlen = sizeof err;
|
||||
|
||||
if (getsockopt(cxn->sock[FIRSTSOCKET], SOL_SOCKET, SO_ERROR,
|
||||
(unsigned char *) &err, &errlen) ||
|
||||
errlen != sizeof err || err)
|
||||
return 0; /* connection has been closed */
|
||||
|
||||
return -1; /* connection status unknown */
|
||||
}
|
||||
|
||||
#endif /* USE_QSOSSL */
|
||||
Reference in New Issue
Block a user