mirror of
https://github.com/moparisthebest/curl
synced 2024-12-23 08:38:49 -05:00
1072 lines
32 KiB
C
1072 lines
32 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifdef USE_GSKIT
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#include <gskssl.h>
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#include <qsoasync.h>
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/* Some symbols are undefined/unsupported on OS400 versions < V7R1. */
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#ifndef GSK_SSL_EXTN_SERVERNAME_REQUEST
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#define GSK_SSL_EXTN_SERVERNAME_REQUEST 230
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#endif
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#ifndef GSK_TLSV10_CIPHER_SPECS
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#define GSK_TLSV10_CIPHER_SPECS 236
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#endif
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#ifndef GSK_TLSV11_CIPHER_SPECS
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#define GSK_TLSV11_CIPHER_SPECS 237
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#endif
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#ifndef GSK_TLSV12_CIPHER_SPECS
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#define GSK_TLSV12_CIPHER_SPECS 238
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#endif
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#ifndef GSK_PROTOCOL_TLSV11
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#define GSK_PROTOCOL_TLSV11 437
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#endif
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#ifndef GSK_PROTOCOL_TLSV12
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#define GSK_PROTOCOL_TLSV12 438
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#endif
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#ifndef GSK_FALSE
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#define GSK_FALSE 0
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#endif
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#ifndef GSK_TRUE
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#define GSK_TRUE 1
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#endif
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#ifdef HAVE_LIMITS_H
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# include <limits.h>
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#endif
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#include <curl/curl.h>
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#include "urldata.h"
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#include "sendf.h"
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#include "gskit.h"
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#include "vtls.h"
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#include "connect.h" /* for the connect timeout */
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#include "select.h"
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#include "strequal.h"
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#include "x509asn1.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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#include "curl_memory.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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/* SSL version flags. */
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#define CURL_GSKPROTO_SSLV2 0
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#define CURL_GSKPROTO_SSLV2_MASK (1 << CURL_GSKPROTO_SSLV2)
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#define CURL_GSKPROTO_SSLV3 1
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#define CURL_GSKPROTO_SSLV3_MASK (1 << CURL_GSKPROTO_SSLV3)
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#define CURL_GSKPROTO_TLSV10 2
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#define CURL_GSKPROTO_TLSV10_MASK (1 << CURL_GSKPROTO_TLSV10)
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#define CURL_GSKPROTO_TLSV11 3
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#define CURL_GSKPROTO_TLSV11_MASK (1 << CURL_GSKPROTO_TLSV11)
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#define CURL_GSKPROTO_TLSV12 4
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#define CURL_GSKPROTO_TLSV12_MASK (1 << CURL_GSKPROTO_TLSV12)
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#define CURL_GSKPROTO_LAST 5
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/* Supported ciphers. */
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typedef struct {
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const char *name; /* Cipher name. */
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const char *gsktoken; /* Corresponding token for GSKit String. */
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unsigned int versions; /* SSL version flags. */
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} gskit_cipher;
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static const gskit_cipher ciphertable[] = {
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{ "null-md5", "01",
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CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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{ "null-sha", "02",
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CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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{ "exp-rc4-md5", "03",
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CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK },
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{ "rc4-md5", "04",
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CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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{ "rc4-sha", "05",
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CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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{ "exp-rc2-cbc-md5", "06",
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CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK },
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{ "exp-des-cbc-sha", "09",
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CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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CURL_GSKPROTO_TLSV11_MASK },
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{ "des-cbc3-sha", "0A",
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CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
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CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
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{ "aes128-sha", "2F",
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CURL_GSKPROTO_TLSV10_MASK | CURL_GSKPROTO_TLSV11_MASK |
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CURL_GSKPROTO_TLSV12_MASK },
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{ "aes256-sha", "35",
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CURL_GSKPROTO_TLSV10_MASK | CURL_GSKPROTO_TLSV11_MASK |
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CURL_GSKPROTO_TLSV12_MASK },
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{ "null-sha256", "3B", CURL_GSKPROTO_TLSV12_MASK },
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{ "aes128-sha256", "3C", CURL_GSKPROTO_TLSV12_MASK },
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{ "aes256-sha256", "3D", CURL_GSKPROTO_TLSV12_MASK },
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{ "aes128-gcm-sha256",
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"9C", CURL_GSKPROTO_TLSV12_MASK },
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{ "aes256-gcm-sha384",
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"9D", CURL_GSKPROTO_TLSV12_MASK },
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{ "rc4-md5", "1", CURL_GSKPROTO_SSLV2_MASK },
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{ "exp-rc4-md5", "2", CURL_GSKPROTO_SSLV2_MASK },
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{ "rc2-md5", "3", CURL_GSKPROTO_SSLV2_MASK },
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{ "exp-rc2-md5", "4", CURL_GSKPROTO_SSLV2_MASK },
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{ "des-cbc-md5", "6", CURL_GSKPROTO_SSLV2_MASK },
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{ "des-cbc3-md5", "7", CURL_GSKPROTO_SSLV2_MASK },
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{ (const char *) NULL, (const char *) NULL, 0 }
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};
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static bool is_separator(char c)
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{
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/* Return whether character is a cipher list separator. */
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switch (c) {
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case ' ':
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case '\t':
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case ':':
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case ',':
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case ';':
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return true;
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}
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return false;
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}
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static CURLcode gskit_status(struct SessionHandle *data, int rc,
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const char *procname, CURLcode defcode)
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{
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/* Process GSKit status and map it to a CURLcode. */
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switch (rc) {
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case GSK_OK:
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case GSK_OS400_ASYNCHRONOUS_SOC_INIT:
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return CURLE_OK;
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case GSK_KEYRING_OPEN_ERROR:
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case GSK_OS400_ERROR_NO_ACCESS:
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return CURLE_SSL_CACERT_BADFILE;
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case GSK_INSUFFICIENT_STORAGE:
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return CURLE_OUT_OF_MEMORY;
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case GSK_ERROR_BAD_V2_CIPHER:
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case GSK_ERROR_BAD_V3_CIPHER:
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case GSK_ERROR_NO_CIPHERS:
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return CURLE_SSL_CIPHER;
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case GSK_OS400_ERROR_NOT_TRUSTED_ROOT:
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case GSK_ERROR_CERT_VALIDATION:
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return CURLE_PEER_FAILED_VERIFICATION;
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case GSK_OS400_ERROR_TIMED_OUT:
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return CURLE_OPERATION_TIMEDOUT;
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case GSK_WOULD_BLOCK:
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return CURLE_AGAIN;
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case GSK_OS400_ERROR_NOT_REGISTERED:
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break;
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case GSK_ERROR_IO:
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switch (errno) {
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case ENOMEM:
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return CURLE_OUT_OF_MEMORY;
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default:
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failf(data, "%s I/O error: %s", procname, strerror(errno));
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break;
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}
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break;
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default:
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failf(data, "%s: %s", procname, gsk_strerror(rc));
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break;
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}
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return defcode;
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}
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static CURLcode set_enum(struct SessionHandle *data, gsk_handle h,
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GSK_ENUM_ID id, GSK_ENUM_VALUE value, bool unsupported_ok)
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{
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int rc = gsk_attribute_set_enum(h, id, value);
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switch (rc) {
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case GSK_OK:
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return CURLE_OK;
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case GSK_ERROR_IO:
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failf(data, "gsk_attribute_set_enum() I/O error: %s", strerror(errno));
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break;
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case GSK_ATTRIBUTE_INVALID_ID:
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if(unsupported_ok)
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return CURLE_UNSUPPORTED_PROTOCOL;
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default:
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failf(data, "gsk_attribute_set_enum(): %s", gsk_strerror(rc));
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break;
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}
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return CURLE_SSL_CONNECT_ERROR;
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}
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static CURLcode set_buffer(struct SessionHandle *data, gsk_handle h,
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GSK_BUF_ID id, const char *buffer, bool unsupported_ok)
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{
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int rc = gsk_attribute_set_buffer(h, id, buffer, 0);
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switch (rc) {
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case GSK_OK:
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return CURLE_OK;
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case GSK_ERROR_IO:
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failf(data, "gsk_attribute_set_buffer() I/O error: %s", strerror(errno));
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break;
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case GSK_ATTRIBUTE_INVALID_ID:
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if(unsupported_ok)
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return CURLE_UNSUPPORTED_PROTOCOL;
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default:
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failf(data, "gsk_attribute_set_buffer(): %s", gsk_strerror(rc));
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break;
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}
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return CURLE_SSL_CONNECT_ERROR;
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}
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static CURLcode set_numeric(struct SessionHandle *data,
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gsk_handle h, GSK_NUM_ID id, int value)
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{
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int rc = gsk_attribute_set_numeric_value(h, id, value);
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switch (rc) {
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case GSK_OK:
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return CURLE_OK;
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case GSK_ERROR_IO:
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failf(data, "gsk_attribute_set_numeric_value() I/O error: %s",
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strerror(errno));
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break;
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default:
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failf(data, "gsk_attribute_set_numeric_value(): %s", gsk_strerror(rc));
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break;
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}
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return CURLE_SSL_CONNECT_ERROR;
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}
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static CURLcode set_callback(struct SessionHandle *data,
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gsk_handle h, GSK_CALLBACK_ID id, void *info)
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{
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int rc = gsk_attribute_set_callback(h, id, info);
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switch (rc) {
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case GSK_OK:
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return CURLE_OK;
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case GSK_ERROR_IO:
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failf(data, "gsk_attribute_set_callback() I/O error: %s", strerror(errno));
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break;
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default:
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failf(data, "gsk_attribute_set_callback(): %s", gsk_strerror(rc));
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break;
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}
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return CURLE_SSL_CONNECT_ERROR;
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}
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static CURLcode set_ciphers(struct SessionHandle *data,
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gsk_handle h, unsigned int *protoflags)
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{
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const char *cipherlist = data->set.str[STRING_SSL_CIPHER_LIST];
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const char *clp;
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const gskit_cipher *ctp;
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int i;
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int l;
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bool unsupported;
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CURLcode result;
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struct {
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char *buf;
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char *ptr;
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} ciphers[CURL_GSKPROTO_LAST];
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/* Compile cipher list into GSKit-compatible cipher lists. */
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if(!cipherlist)
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return CURLE_OK;
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while(is_separator(*cipherlist)) /* Skip initial separators. */
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cipherlist++;
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if(!*cipherlist)
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return CURLE_OK;
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/* We allocate GSKit buffers of the same size as the input string: since
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GSKit tokens are always shorter than their cipher names, allocated buffers
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will always be large enough to accomodate the result. */
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l = strlen(cipherlist) + 1;
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memset((char *) ciphers, 0, sizeof ciphers);
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for(i = 0; i < CURL_GSKPROTO_LAST; i++) {
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ciphers[i].buf = malloc(l);
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if(!ciphers[i].buf) {
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while(i--)
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free(ciphers[i].buf);
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return CURLE_OUT_OF_MEMORY;
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}
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ciphers[i].ptr = ciphers[i].buf;
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*ciphers[i].ptr = '\0';
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}
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/* Process each cipher in input string. */
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unsupported = FALSE;
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result = CURLE_OK;
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for(;;) {
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for(clp = cipherlist; *cipherlist && !is_separator(*cipherlist);)
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cipherlist++;
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l = cipherlist - clp;
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if(!l)
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break;
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/* Search the cipher in our table. */
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for(ctp = ciphertable; ctp->name; ctp++)
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if(strnequal(ctp->name, clp, l) && !ctp->name[l])
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break;
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if(!ctp->name) {
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failf(data, "Unknown cipher %.*s", l, clp);
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result = CURLE_SSL_CIPHER;
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}
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else {
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unsupported |= !(ctp->versions & (CURL_GSKPROTO_SSLV2_MASK |
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CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK));
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for(i = 0; i < CURL_GSKPROTO_LAST; i++) {
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if(ctp->versions & (1 << i)) {
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strcpy(ciphers[i].ptr, ctp->gsktoken);
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ciphers[i].ptr += strlen(ctp->gsktoken);
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}
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}
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}
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/* Advance to next cipher name or end of string. */
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while(is_separator(*cipherlist))
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cipherlist++;
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}
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/* Disable protocols with empty cipher lists. */
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for(i = 0; i < CURL_GSKPROTO_LAST; i++) {
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if(!(*protoflags & (1 << i)) || !ciphers[i].buf[0]) {
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*protoflags &= ~(1 << i);
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ciphers[i].buf[0] = '\0';
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}
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}
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/* Try to set-up TLSv1.1 and TLSv2.1 ciphers. */
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if(*protoflags & CURL_GSKPROTO_TLSV11_MASK) {
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result = set_buffer(data, h, GSK_TLSV11_CIPHER_SPECS,
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ciphers[CURL_GSKPROTO_TLSV11].buf, TRUE);
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if(result == CURLE_UNSUPPORTED_PROTOCOL) {
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result = CURLE_OK;
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if(unsupported) {
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failf(data, "TLSv1.1-only ciphers are not yet supported");
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result = CURLE_SSL_CIPHER;
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}
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}
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}
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if(!result && (*protoflags & CURL_GSKPROTO_TLSV12_MASK)) {
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result = set_buffer(data, h, GSK_TLSV12_CIPHER_SPECS,
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ciphers[CURL_GSKPROTO_TLSV12].buf, TRUE);
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if(result == CURLE_UNSUPPORTED_PROTOCOL) {
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result = CURLE_OK;
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if(unsupported) {
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failf(data, "TLSv1.2-only ciphers are not yet supported");
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result = CURLE_SSL_CIPHER;
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}
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}
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}
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/* Try to set-up TLSv1.0 ciphers. If not successful, concatenate them to
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the SSLv3 ciphers. OS/400 prior to version 7.1 will understand it. */
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if(!result && (*protoflags & CURL_GSKPROTO_TLSV10_MASK)) {
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result = set_buffer(data, h, GSK_TLSV10_CIPHER_SPECS,
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ciphers[CURL_GSKPROTO_TLSV10].buf, TRUE);
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if(result == CURLE_UNSUPPORTED_PROTOCOL) {
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result = CURLE_OK;
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strcpy(ciphers[CURL_GSKPROTO_SSLV3].ptr,
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ciphers[CURL_GSKPROTO_TLSV10].ptr);
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}
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}
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/* Set-up other ciphers. */
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if(!result && (*protoflags & CURL_GSKPROTO_SSLV3_MASK))
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result = set_buffer(data, h, GSK_V3_CIPHER_SPECS,
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ciphers[CURL_GSKPROTO_SSLV3].buf, FALSE);
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if(!result && (*protoflags & CURL_GSKPROTO_SSLV2_MASK))
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result = set_buffer(data, h, GSK_V2_CIPHER_SPECS,
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ciphers[CURL_GSKPROTO_SSLV2].buf, FALSE);
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/* Clean-up. */
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for(i = 0; i < CURL_GSKPROTO_LAST; i++)
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free(ciphers[i].buf);
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return result;
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}
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int Curl_gskit_init(void)
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{
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/* No initialisation needed. */
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return 1;
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}
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void Curl_gskit_cleanup(void)
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{
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/* Nothing to do. */
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}
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static CURLcode init_environment(struct SessionHandle *data,
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gsk_handle *envir, const char *appid,
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const char *file, const char *label,
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const char *password)
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{
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int rc;
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CURLcode result;
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gsk_handle h;
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/* Creates the GSKit environment. */
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rc = gsk_environment_open(&h);
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switch (rc) {
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case GSK_OK:
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break;
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case GSK_INSUFFICIENT_STORAGE:
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return CURLE_OUT_OF_MEMORY;
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default:
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failf(data, "gsk_environment_open(): %s", gsk_strerror(rc));
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return CURLE_SSL_CONNECT_ERROR;
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}
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result = set_enum(data, h, GSK_SESSION_TYPE, GSK_CLIENT_SESSION, FALSE);
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if(!result && appid)
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result = set_buffer(data, h, GSK_OS400_APPLICATION_ID, appid, FALSE);
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if(!result && file)
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result = set_buffer(data, h, GSK_KEYRING_FILE, file, FALSE);
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if(!result && label)
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result = set_buffer(data, h, GSK_KEYRING_LABEL, label, FALSE);
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if(!result && password)
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result = set_buffer(data, h, GSK_KEYRING_PW, password, FALSE);
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|
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if(!result) {
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/* Locate CAs, Client certificate and key according to our settings.
|
|
Note: this call may be blocking for some tenths of seconds. */
|
|
result = gskit_status(data, gsk_environment_init(h),
|
|
"gsk_environment_init()", CURLE_SSL_CERTPROBLEM);
|
|
if(!result) {
|
|
*envir = h;
|
|
return result;
|
|
}
|
|
}
|
|
/* Error: rollback. */
|
|
gsk_environment_close(&h);
|
|
return result;
|
|
}
|
|
|
|
|
|
static void cancel_async_handshake(struct connectdata *conn, int sockindex)
|
|
{
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
Qso_OverlappedIO_t cstat;
|
|
|
|
if(QsoCancelOperation(conn->sock[sockindex], 0) > 0)
|
|
QsoWaitForIOCompletion(connssl->iocport, &cstat, (struct timeval *) NULL);
|
|
}
|
|
|
|
|
|
static void close_async_handshake(struct ssl_connect_data *connssl)
|
|
{
|
|
QsoDestroyIOCompletionPort(connssl->iocport);
|
|
connssl->iocport = -1;
|
|
}
|
|
|
|
|
|
static void close_one(struct ssl_connect_data *conn,
|
|
struct SessionHandle *data)
|
|
{
|
|
if(conn->handle) {
|
|
gskit_status(data, gsk_secure_soc_close(&conn->handle),
|
|
"gsk_secure_soc_close()", 0);
|
|
conn->handle = (gsk_handle) NULL;
|
|
}
|
|
if(conn->iocport >= 0)
|
|
close_async_handshake(conn);
|
|
}
|
|
|
|
|
|
static ssize_t gskit_send(struct connectdata *conn, int sockindex,
|
|
const void *mem, size_t len, CURLcode *curlcode)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
CURLcode cc;
|
|
int written;
|
|
|
|
cc = gskit_status(data,
|
|
gsk_secure_soc_write(conn->ssl[sockindex].handle,
|
|
(char *) mem, (int) len, &written),
|
|
"gsk_secure_soc_write()", CURLE_SEND_ERROR);
|
|
if(cc != CURLE_OK) {
|
|
*curlcode = cc;
|
|
written = -1;
|
|
}
|
|
return (ssize_t) written; /* number of bytes */
|
|
}
|
|
|
|
|
|
static ssize_t gskit_recv(struct connectdata *conn, int num, char *buf,
|
|
size_t buffersize, CURLcode *curlcode)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
int buffsize;
|
|
int nread;
|
|
CURLcode cc;
|
|
|
|
buffsize = buffersize > (size_t) INT_MAX? INT_MAX: (int) buffersize;
|
|
cc = gskit_status(data, gsk_secure_soc_read(conn->ssl[num].handle,
|
|
buf, buffsize, &nread),
|
|
"gsk_secure_soc_read()", CURLE_RECV_ERROR);
|
|
if(cc != CURLE_OK) {
|
|
*curlcode = cc;
|
|
nread = -1;
|
|
}
|
|
return (ssize_t) nread;
|
|
}
|
|
|
|
|
|
static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
gsk_handle envir;
|
|
CURLcode result;
|
|
int rc;
|
|
char *keyringfile;
|
|
char *keyringpwd;
|
|
char *keyringlabel;
|
|
char *sni;
|
|
unsigned int protoflags;
|
|
long timeout;
|
|
Qso_OverlappedIO_t commarea;
|
|
|
|
/* Create SSL environment, start (preferably asynchronous) handshake. */
|
|
|
|
connssl->handle = (gsk_handle) NULL;
|
|
connssl->iocport = -1;
|
|
|
|
/* GSKit supports two ways of specifying an SSL context: either by
|
|
* application identifier (that should have been defined at the system
|
|
* level) or by keyring file, password and certificate label.
|
|
* Local certificate name (CURLOPT_SSLCERT) is used to hold either the
|
|
* application identifier of the certificate label.
|
|
* Key password (CURLOPT_KEYPASSWD) holds the keyring password.
|
|
* It is not possible to have different keyrings for the CAs and the
|
|
* local certificate. We thus use the CA file (CURLOPT_CAINFO) to identify
|
|
* the keyring file.
|
|
* If no key password is given and the keyring is the system keyring,
|
|
* application identifier mode is tried first, as recommended in IBM doc.
|
|
*/
|
|
|
|
keyringfile = data->set.str[STRING_SSL_CAFILE];
|
|
keyringpwd = data->set.str[STRING_KEY_PASSWD];
|
|
keyringlabel = data->set.str[STRING_CERT];
|
|
envir = (gsk_handle) NULL;
|
|
|
|
if(keyringlabel && *keyringlabel && !keyringpwd &&
|
|
!strcmp(keyringfile, CURL_CA_BUNDLE)) {
|
|
/* Try application identifier mode. */
|
|
init_environment(data, &envir, keyringlabel, (const char *) NULL,
|
|
(const char *) NULL, (const char *) NULL);
|
|
}
|
|
|
|
if(!envir) {
|
|
/* Use keyring mode. */
|
|
result = init_environment(data, &envir, (const char *) NULL,
|
|
keyringfile, keyringlabel, keyringpwd);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
/* Create secure session. */
|
|
result = gskit_status(data, gsk_secure_soc_open(envir, &connssl->handle),
|
|
"gsk_secure_soc_open()", CURLE_SSL_CONNECT_ERROR);
|
|
gsk_environment_close(&envir);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Determine which SSL/TLS version should be enabled. */
|
|
protoflags = CURL_GSKPROTO_TLSV10_MASK | CURL_GSKPROTO_TLSV11_MASK |
|
|
CURL_GSKPROTO_TLSV12_MASK;
|
|
sni = conn->host.name;
|
|
switch (data->set.ssl.version) {
|
|
case CURL_SSLVERSION_SSLv2:
|
|
protoflags = CURL_GSKPROTO_SSLV2_MASK;
|
|
sni = (char *) NULL;
|
|
break;
|
|
case CURL_SSLVERSION_SSLv3:
|
|
protoflags = CURL_GSKPROTO_SSLV3_MASK;
|
|
sni = (char *) NULL;
|
|
break;
|
|
case CURL_SSLVERSION_TLSv1:
|
|
protoflags = CURL_GSKPROTO_TLSV10_MASK |
|
|
CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK;
|
|
break;
|
|
case CURL_SSLVERSION_TLSv1_0:
|
|
protoflags = CURL_GSKPROTO_TLSV10_MASK;
|
|
break;
|
|
case CURL_SSLVERSION_TLSv1_1:
|
|
protoflags = CURL_GSKPROTO_TLSV11_MASK;
|
|
break;
|
|
case CURL_SSLVERSION_TLSv1_2:
|
|
protoflags = CURL_GSKPROTO_TLSV12_MASK;
|
|
break;
|
|
}
|
|
|
|
/* Process SNI. Ignore if not supported (on OS400 < V7R1). */
|
|
if(sni) {
|
|
result = set_buffer(data, connssl->handle,
|
|
GSK_SSL_EXTN_SERVERNAME_REQUEST, sni, TRUE);
|
|
if(result == CURLE_UNSUPPORTED_PROTOCOL)
|
|
result = CURLE_OK;
|
|
}
|
|
|
|
/* Set session parameters. */
|
|
if(!result) {
|
|
/* Compute the handshake timeout. Since GSKit granularity is 1 second,
|
|
we round up the required value. */
|
|
timeout = Curl_timeleft(data, NULL, TRUE);
|
|
if(timeout < 0)
|
|
result = CURLE_OPERATION_TIMEDOUT;
|
|
else
|
|
result = set_numeric(data, connssl->handle, GSK_HANDSHAKE_TIMEOUT,
|
|
(timeout + 999) / 1000);
|
|
}
|
|
if(!result)
|
|
result = set_numeric(data, connssl->handle, GSK_FD, conn->sock[sockindex]);
|
|
if(!result)
|
|
result = set_ciphers(data, connssl->handle, &protoflags);
|
|
if(!protoflags) {
|
|
failf(data, "No SSL protocol/cipher combination enabled");
|
|
result = CURLE_SSL_CIPHER;
|
|
}
|
|
if(!result)
|
|
result = set_enum(data, connssl->handle, GSK_PROTOCOL_SSLV2,
|
|
(protoflags & CURL_GSKPROTO_SSLV2_MASK)?
|
|
GSK_PROTOCOL_SSLV2_ON: GSK_PROTOCOL_SSLV2_OFF, FALSE);
|
|
if(!result)
|
|
result = set_enum(data, connssl->handle, GSK_PROTOCOL_SSLV3,
|
|
(protoflags & CURL_GSKPROTO_SSLV3_MASK)?
|
|
GSK_PROTOCOL_SSLV3_ON: GSK_PROTOCOL_SSLV3_OFF, FALSE);
|
|
if(!result)
|
|
result = set_enum(data, connssl->handle, GSK_PROTOCOL_TLSV1,
|
|
(protoflags & CURL_GSKPROTO_TLSV10_MASK)?
|
|
GSK_PROTOCOL_TLSV1_ON: GSK_PROTOCOL_TLSV1_OFF, FALSE);
|
|
if(!result) {
|
|
result = set_enum(data, connssl->handle, GSK_PROTOCOL_TLSV11,
|
|
(protoflags & CURL_GSKPROTO_TLSV11_MASK)?
|
|
GSK_TRUE: GSK_FALSE, TRUE);
|
|
if(result == CURLE_UNSUPPORTED_PROTOCOL) {
|
|
result = CURLE_OK;
|
|
if(protoflags == CURL_GSKPROTO_TLSV11_MASK) {
|
|
failf(data, "TLS 1.1 not yet supported");
|
|
result = CURLE_SSL_CIPHER;
|
|
}
|
|
}
|
|
}
|
|
if(!result) {
|
|
result = set_enum(data, connssl->handle, GSK_PROTOCOL_TLSV12,
|
|
(protoflags & CURL_GSKPROTO_TLSV12_MASK)?
|
|
GSK_TRUE: GSK_FALSE, TRUE);
|
|
if(result == CURLE_UNSUPPORTED_PROTOCOL) {
|
|
result = CURLE_OK;
|
|
if(protoflags == CURL_GSKPROTO_TLSV12_MASK) {
|
|
failf(data, "TLS 1.2 not yet supported");
|
|
result = CURLE_SSL_CIPHER;
|
|
}
|
|
}
|
|
}
|
|
if(!result)
|
|
result = set_enum(data, connssl->handle, GSK_SERVER_AUTH_TYPE,
|
|
data->set.ssl.verifypeer? GSK_SERVER_AUTH_FULL:
|
|
GSK_SERVER_AUTH_PASSTHRU, FALSE);
|
|
|
|
if(!result) {
|
|
/* Start handshake. Try asynchronous first. */
|
|
memset(&commarea, 0, sizeof commarea);
|
|
connssl->iocport = QsoCreateIOCompletionPort();
|
|
if(connssl->iocport != -1) {
|
|
result = gskit_status(data,
|
|
gsk_secure_soc_startInit(connssl->handle,
|
|
connssl->iocport,
|
|
&commarea),
|
|
"gsk_secure_soc_startInit()",
|
|
CURLE_SSL_CONNECT_ERROR);
|
|
if(!result) {
|
|
connssl->connecting_state = ssl_connect_2;
|
|
return CURLE_OK;
|
|
}
|
|
else
|
|
close_async_handshake(connssl);
|
|
}
|
|
else if(errno != ENOBUFS)
|
|
result = gskit_status(data, GSK_ERROR_IO,
|
|
"QsoCreateIOCompletionPort()", 0);
|
|
else {
|
|
/* No more completion port available. Use synchronous IO. */
|
|
result = gskit_status(data, gsk_secure_soc_init(connssl->handle),
|
|
"gsk_secure_soc_init()", CURLE_SSL_CONNECT_ERROR);
|
|
if(!result) {
|
|
connssl->connecting_state = ssl_connect_3;
|
|
return CURLE_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Error: rollback. */
|
|
close_one(connssl, data);
|
|
return result;
|
|
}
|
|
|
|
|
|
static CURLcode gskit_connect_step2(struct connectdata *conn, int sockindex,
|
|
bool nonblocking)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
Qso_OverlappedIO_t cstat;
|
|
long timeout_ms;
|
|
struct timeval stmv;
|
|
CURLcode result;
|
|
|
|
/* Poll or wait for end of SSL asynchronous handshake. */
|
|
|
|
for(;;) {
|
|
timeout_ms = nonblocking? 0: Curl_timeleft(data, NULL, TRUE);
|
|
if(timeout_ms < 0)
|
|
timeout_ms = 0;
|
|
stmv.tv_sec = timeout_ms / 1000;
|
|
stmv.tv_usec = (timeout_ms - stmv.tv_sec * 1000) * 1000;
|
|
switch (QsoWaitForIOCompletion(connssl->iocport, &cstat, &stmv)) {
|
|
case 1: /* Operation complete. */
|
|
break;
|
|
case -1: /* An error occurred: handshake still in progress. */
|
|
if(errno == EINTR) {
|
|
if(nonblocking)
|
|
return CURLE_OK;
|
|
continue; /* Retry. */
|
|
}
|
|
if(errno != ETIME) {
|
|
failf(data, "QsoWaitForIOCompletion() I/O error: %s", strerror(errno));
|
|
cancel_async_handshake(conn, sockindex);
|
|
close_async_handshake(connssl);
|
|
return CURLE_SSL_CONNECT_ERROR;
|
|
}
|
|
/* FALL INTO... */
|
|
case 0: /* Handshake in progress, timeout occurred. */
|
|
if(nonblocking)
|
|
return CURLE_OK;
|
|
cancel_async_handshake(conn, sockindex);
|
|
close_async_handshake(connssl);
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
}
|
|
break;
|
|
}
|
|
result = gskit_status(data, cstat.returnValue, "SSL handshake",
|
|
CURLE_SSL_CONNECT_ERROR);
|
|
if(!result)
|
|
connssl->connecting_state = ssl_connect_3;
|
|
close_async_handshake(connssl);
|
|
return result;
|
|
}
|
|
|
|
|
|
static CURLcode gskit_connect_step3(struct connectdata *conn, int sockindex)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
const gsk_cert_data_elem *cdev;
|
|
int cdec;
|
|
const gsk_cert_data_elem *p;
|
|
const char *cert = (const char *) NULL;
|
|
const char *certend;
|
|
const char *ptr;
|
|
int i;
|
|
CURLcode result;
|
|
|
|
/* SSL handshake done: gather certificate info and verify host. */
|
|
|
|
if(gskit_status(data, gsk_attribute_get_cert_info(connssl->handle,
|
|
GSK_PARTNER_CERT_INFO,
|
|
&cdev, &cdec),
|
|
"gsk_attribute_get_cert_info()", CURLE_SSL_CONNECT_ERROR) ==
|
|
CURLE_OK) {
|
|
infof(data, "Server certificate:\n");
|
|
p = cdev;
|
|
for(i = 0; i++ < cdec; p++)
|
|
switch (p->cert_data_id) {
|
|
case CERT_BODY_DER:
|
|
cert = p->cert_data_p;
|
|
certend = cert + cdev->cert_data_l;
|
|
break;
|
|
case CERT_DN_PRINTABLE:
|
|
infof(data, "\t subject: %.*s\n", p->cert_data_l, p->cert_data_p);
|
|
break;
|
|
case CERT_ISSUER_DN_PRINTABLE:
|
|
infof(data, "\t issuer: %.*s\n", p->cert_data_l, p->cert_data_p);
|
|
break;
|
|
case CERT_VALID_FROM:
|
|
infof(data, "\t start date: %.*s\n", p->cert_data_l, p->cert_data_p);
|
|
break;
|
|
case CERT_VALID_TO:
|
|
infof(data, "\t expire date: %.*s\n", p->cert_data_l, p->cert_data_p);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Verify host. */
|
|
result = Curl_verifyhost(conn, cert, certend);
|
|
if(result)
|
|
return result;
|
|
|
|
/* The only place GSKit can get the whole CA chain is a validation
|
|
callback where no user data pointer is available. Therefore it's not
|
|
possible to copy this chain into our structures for CAINFO.
|
|
However the server certificate may be available, thus we can return
|
|
info about it. */
|
|
if(data->set.ssl.certinfo) {
|
|
result = Curl_ssl_init_certinfo(data, 1);
|
|
if(result)
|
|
return result;
|
|
|
|
if(cert) {
|
|
result = Curl_extract_certinfo(conn, 0, cert, certend);
|
|
if(result)
|
|
return result;
|
|
}
|
|
}
|
|
|
|
/* Check pinned public key. */
|
|
ptr = data->set.str[STRING_SSL_PINNEDPUBLICKEY];
|
|
if(!result && ptr) {
|
|
curl_X509certificate x509;
|
|
curl_asn1Element *p;
|
|
|
|
if(!cert)
|
|
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
|
Curl_parseX509(&x509, cert, certend);
|
|
p = &x509.subjectPublicKeyInfo;
|
|
result = Curl_pin_peer_pubkey(ptr, p->header, p->end - p->header);
|
|
if(result) {
|
|
failf(data, "SSL: public key does not match pinned public key!");
|
|
return result;
|
|
}
|
|
}
|
|
|
|
connssl->connecting_state = ssl_connect_done;
|
|
return CURLE_OK;
|
|
}
|
|
|
|
|
|
static CURLcode gskit_connect_common(struct connectdata *conn, int sockindex,
|
|
bool nonblocking, bool *done)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
long timeout_ms;
|
|
Qso_OverlappedIO_t cstat;
|
|
CURLcode result = CURLE_OK;
|
|
|
|
*done = connssl->state == ssl_connection_complete;
|
|
if(*done)
|
|
return CURLE_OK;
|
|
|
|
/* Step 1: create session, start handshake. */
|
|
if(connssl->connecting_state == ssl_connect_1) {
|
|
/* check allowed time left */
|
|
timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
|
|
|
if(timeout_ms < 0) {
|
|
/* no need to continue if time already is up */
|
|
failf(data, "SSL connection timeout");
|
|
result = CURLE_OPERATION_TIMEDOUT;
|
|
}
|
|
else
|
|
result = gskit_connect_step1(conn, sockindex);
|
|
}
|
|
|
|
/* Step 2: check if handshake is over. */
|
|
if(!result && connssl->connecting_state == ssl_connect_2) {
|
|
/* check allowed time left */
|
|
timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
|
|
|
if(timeout_ms < 0) {
|
|
/* no need to continue if time already is up */
|
|
failf(data, "SSL connection timeout");
|
|
result = CURLE_OPERATION_TIMEDOUT;
|
|
}
|
|
else
|
|
result = gskit_connect_step2(conn, sockindex, nonblocking);
|
|
}
|
|
|
|
/* Step 3: gather certificate info, verify host. */
|
|
if(!result && connssl->connecting_state == ssl_connect_3)
|
|
result = gskit_connect_step3(conn, sockindex);
|
|
|
|
if(result)
|
|
close_one(connssl, data);
|
|
else if(connssl->connecting_state == ssl_connect_done) {
|
|
connssl->state = ssl_connection_complete;
|
|
connssl->connecting_state = ssl_connect_1;
|
|
conn->recv[sockindex] = gskit_recv;
|
|
conn->send[sockindex] = gskit_send;
|
|
*done = TRUE;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
CURLcode Curl_gskit_connect_nonblocking(struct connectdata *conn,
|
|
int sockindex,
|
|
bool *done)
|
|
{
|
|
CURLcode result;
|
|
|
|
result = gskit_connect_common(conn, sockindex, TRUE, done);
|
|
if(*done || result)
|
|
conn->ssl[sockindex].connecting_state = ssl_connect_1;
|
|
return result;
|
|
}
|
|
|
|
|
|
CURLcode Curl_gskit_connect(struct connectdata *conn, int sockindex)
|
|
{
|
|
CURLcode result;
|
|
bool done;
|
|
|
|
conn->ssl[sockindex].connecting_state = ssl_connect_1;
|
|
result = gskit_connect_common(conn, sockindex, FALSE, &done);
|
|
if(result)
|
|
return result;
|
|
|
|
DEBUGASSERT(done);
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
|
|
void Curl_gskit_close(struct connectdata *conn, int sockindex)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
|
|
if(connssl->use)
|
|
close_one(connssl, data);
|
|
}
|
|
|
|
|
|
int Curl_gskit_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;
|
|
|
|
close_one(connssl, data);
|
|
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 gsk_secure_soc_read() now, so
|
|
use read(). */
|
|
|
|
nread = read(conn->sock[sockindex], buf, sizeof(buf));
|
|
|
|
if(nread < 0) {
|
|
failf(data, "read: %s", strerror(errno));
|
|
rc = -1;
|
|
}
|
|
|
|
if(nread <= 0)
|
|
break;
|
|
|
|
what = Curl_socket_ready(conn->sock[sockindex], CURL_SOCKET_BAD, 0);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
size_t Curl_gskit_version(char *buffer, size_t size)
|
|
{
|
|
strncpy(buffer, "GSKit", size);
|
|
return strlen(buffer);
|
|
}
|
|
|
|
|
|
int Curl_gskit_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_GSKIT */
|