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vtls: created subdir, moved sslgen.[ch] there, updated all include lines

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This commit is contained in:
Daniel Stenberg
2013-12-17 23:05:37 +01:00
parent 9f260b5d66
commit eccf4fb7ee
25 changed files with 29 additions and 34 deletions
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689
lib/vtls/sslgen.c Normal file
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2013, 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.
*
***************************************************************************/
/* This file is for implementing all "generic" SSL functions that all libcurl
internals should use. It is then responsible for calling the proper
"backend" function.
SSL-functions in libcurl should call functions in this source file, and not
to any specific SSL-layer.
Curl_ssl_ - prefix for generic ones
Curl_ossl_ - prefix for OpenSSL ones
Curl_gtls_ - prefix for GnuTLS ones
Curl_nss_ - prefix for NSS ones
Curl_qssl_ - prefix for QsoSSL ones
Curl_gskit_ - prefix for GSKit ones
Curl_polarssl_ - prefix for PolarSSL ones
Curl_cyassl_ - prefix for CyaSSL ones
Curl_schannel_ - prefix for Schannel SSPI ones
Curl_darwinssl_ - prefix for SecureTransport (Darwin) ones
Note that this source code uses curlssl_* functions, and they are all
defines/macros #defined by the lib-specific header files.
"SSL/TLS Strong Encryption: An Introduction"
http://httpd.apache.org/docs-2.0/ssl/ssl_intro.html
*/
#include "curl_setup.h"
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include "urldata.h"
#define SSLGEN_C
#include "sslgen.h" /* generic SSL protos etc */
#include "ssluse.h" /* OpenSSL versions */
#include "gtls.h" /* GnuTLS versions */
#include "nssg.h" /* NSS versions */
#include "qssl.h" /* QSOSSL versions */
#include "gskit.h" /* Global Secure ToolKit versions */
#include "polarssl.h" /* PolarSSL versions */
#include "axtls.h" /* axTLS versions */
#include "cyassl.h" /* CyaSSL versions */
#include "curl_schannel.h" /* Schannel SSPI version */
#include "curl_darwinssl.h" /* SecureTransport (Darwin) version */
#include "slist.h"
#include "sendf.h"
#include "rawstr.h"
#include "url.h"
#include "curl_memory.h"
#include "progress.h"
#include "share.h"
#include "timeval.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
/* The last #include file should be: */
#include "memdebug.h"
/* convenience macro to check if this handle is using a shared SSL session */
#define SSLSESSION_SHARED(data) (data->share && \
(data->share->specifier & \
(1<<CURL_LOCK_DATA_SSL_SESSION)))
static bool safe_strequal(char* str1, char* str2)
{
if(str1 && str2)
/* both pointers point to something then compare them */
return (0 != Curl_raw_equal(str1, str2)) ? TRUE : FALSE;
else
/* if both pointers are NULL then treat them as equal */
return (!str1 && !str2) ? TRUE : FALSE;
}
bool
Curl_ssl_config_matches(struct ssl_config_data* data,
struct ssl_config_data* needle)
{
if((data->version == needle->version) &&
(data->verifypeer == needle->verifypeer) &&
(data->verifyhost == needle->verifyhost) &&
safe_strequal(data->CApath, needle->CApath) &&
safe_strequal(data->CAfile, needle->CAfile) &&
safe_strequal(data->random_file, needle->random_file) &&
safe_strequal(data->egdsocket, needle->egdsocket) &&
safe_strequal(data->cipher_list, needle->cipher_list))
return TRUE;
return FALSE;
}
bool
Curl_clone_ssl_config(struct ssl_config_data *source,
struct ssl_config_data *dest)
{
dest->sessionid = source->sessionid;
dest->verifyhost = source->verifyhost;
dest->verifypeer = source->verifypeer;
dest->version = source->version;
if(source->CAfile) {
dest->CAfile = strdup(source->CAfile);
if(!dest->CAfile)
return FALSE;
}
else
dest->CAfile = NULL;
if(source->CApath) {
dest->CApath = strdup(source->CApath);
if(!dest->CApath)
return FALSE;
}
else
dest->CApath = NULL;
if(source->cipher_list) {
dest->cipher_list = strdup(source->cipher_list);
if(!dest->cipher_list)
return FALSE;
}
else
dest->cipher_list = NULL;
if(source->egdsocket) {
dest->egdsocket = strdup(source->egdsocket);
if(!dest->egdsocket)
return FALSE;
}
else
dest->egdsocket = NULL;
if(source->random_file) {
dest->random_file = strdup(source->random_file);
if(!dest->random_file)
return FALSE;
}
else
dest->random_file = NULL;
return TRUE;
}
void Curl_free_ssl_config(struct ssl_config_data* sslc)
{
Curl_safefree(sslc->CAfile);
Curl_safefree(sslc->CApath);
Curl_safefree(sslc->cipher_list);
Curl_safefree(sslc->egdsocket);
Curl_safefree(sslc->random_file);
}
/*
* Curl_rand() returns a random unsigned integer, 32bit.
*
* This non-SSL function is put here only because this file is the only one
* with knowledge of what the underlying SSL libraries provide in terms of
* randomizers.
*
* NOTE: 'data' may be passed in as NULL when coming from external API without
* easy handle!
*
*/
unsigned int Curl_rand(struct SessionHandle *data)
{
unsigned int r;
static unsigned int randseed;
static bool seeded = FALSE;
#ifndef have_curlssl_random
(void)data;
#else
if(data) {
Curl_ssl_random(data, (unsigned char *)&r, sizeof(r));
return r;
}
#endif
#ifdef RANDOM_FILE
if(!seeded) {
/* if there's a random file to read a seed from, use it */
int fd = open(RANDOM_FILE, O_RDONLY);
if(fd > -1) {
/* read random data into the randseed variable */
ssize_t nread = read(fd, &randseed, sizeof(randseed));
if(nread == sizeof(randseed))
seeded = TRUE;
close(fd);
}
}
#endif
if(!seeded) {
struct timeval now = curlx_tvnow();
randseed += (unsigned int)now.tv_usec + (unsigned int)now.tv_sec;
randseed = randseed * 1103515245 + 12345;
randseed = randseed * 1103515245 + 12345;
randseed = randseed * 1103515245 + 12345;
seeded = TRUE;
}
/* Return an unsigned 32-bit pseudo-random number. */
r = randseed = randseed * 1103515245 + 12345;
return (r << 16) | ((r >> 16) & 0xFFFF);
}
#ifdef USE_SSL
/* "global" init done? */
static bool init_ssl=FALSE;
/**
* Global SSL init
*
* @retval 0 error initializing SSL
* @retval 1 SSL initialized successfully
*/
int Curl_ssl_init(void)
{
/* make sure this is only done once */
if(init_ssl)
return 1;
init_ssl = TRUE; /* never again */
return curlssl_init();
}
/* Global cleanup */
void Curl_ssl_cleanup(void)
{
if(init_ssl) {
/* only cleanup if we did a previous init */
curlssl_cleanup();
init_ssl = FALSE;
}
}
CURLcode
Curl_ssl_connect(struct connectdata *conn, int sockindex)
{
CURLcode res;
/* mark this is being ssl-enabled from here on. */
conn->ssl[sockindex].use = TRUE;
conn->ssl[sockindex].state = ssl_connection_negotiating;
res = curlssl_connect(conn, sockindex);
if(!res)
Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
return res;
}
CURLcode
Curl_ssl_connect_nonblocking(struct connectdata *conn, int sockindex,
bool *done)
{
CURLcode res;
/* mark this is being ssl requested from here on. */
conn->ssl[sockindex].use = TRUE;
#ifdef curlssl_connect_nonblocking
res = curlssl_connect_nonblocking(conn, sockindex, done);
#else
*done = TRUE; /* fallback to BLOCKING */
res = curlssl_connect(conn, sockindex);
#endif /* non-blocking connect support */
if(!res && *done)
Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
return res;
}
/*
* Check if there's a session ID for the given connection in the cache, and if
* there's one suitable, it is provided. Returns TRUE when no entry matched.
*/
int Curl_ssl_getsessionid(struct connectdata *conn,
void **ssl_sessionid,
size_t *idsize) /* set 0 if unknown */
{
struct curl_ssl_session *check;
struct SessionHandle *data = conn->data;
size_t i;
long *general_age;
bool no_match = TRUE;
*ssl_sessionid = NULL;
if(!conn->ssl_config.sessionid)
/* session ID re-use is disabled */
return TRUE;
/* Lock if shared */
if(SSLSESSION_SHARED(data)) {
Curl_share_lock(data, CURL_LOCK_DATA_SSL_SESSION, CURL_LOCK_ACCESS_SINGLE);
general_age = &data->share->sessionage;
}
else
general_age = &data->state.sessionage;
for(i = 0; i < data->set.ssl.max_ssl_sessions; i++) {
check = &data->state.session[i];
if(!check->sessionid)
/* not session ID means blank entry */
continue;
if(Curl_raw_equal(conn->host.name, check->name) &&
(conn->remote_port == check->remote_port) &&
Curl_ssl_config_matches(&conn->ssl_config, &check->ssl_config)) {
/* yes, we have a session ID! */
(*general_age)++; /* increase general age */
check->age = *general_age; /* set this as used in this age */
*ssl_sessionid = check->sessionid;
if(idsize)
*idsize = check->idsize;
no_match = FALSE;
break;
}
}
/* Unlock */
if(SSLSESSION_SHARED(data))
Curl_share_unlock(data, CURL_LOCK_DATA_SSL_SESSION);
return no_match;
}
/*
* Kill a single session ID entry in the cache.
*/
void Curl_ssl_kill_session(struct curl_ssl_session *session)
{
if(session->sessionid) {
/* defensive check */
/* free the ID the SSL-layer specific way */
curlssl_session_free(session->sessionid);
session->sessionid = NULL;
session->age = 0; /* fresh */
Curl_free_ssl_config(&session->ssl_config);
Curl_safefree(session->name);
}
}
/*
* Delete the given session ID from the cache.
*/
void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid)
{
size_t i;
struct SessionHandle *data=conn->data;
if(SSLSESSION_SHARED(data))
Curl_share_lock(data, CURL_LOCK_DATA_SSL_SESSION, CURL_LOCK_ACCESS_SINGLE);
for(i = 0; i < data->set.ssl.max_ssl_sessions; i++) {
struct curl_ssl_session *check = &data->state.session[i];
if(check->sessionid == ssl_sessionid) {
Curl_ssl_kill_session(check);
break;
}
}
if(SSLSESSION_SHARED(data))
Curl_share_unlock(data, CURL_LOCK_DATA_SSL_SESSION);
}
/*
* Store session id in the session cache. The ID passed on to this function
* must already have been extracted and allocated the proper way for the SSL
* layer. Curl_XXXX_session_free() will be called to free/kill the session ID
* later on.
*/
CURLcode Curl_ssl_addsessionid(struct connectdata *conn,
void *ssl_sessionid,
size_t idsize)
{
size_t i;
struct SessionHandle *data=conn->data; /* the mother of all structs */
struct curl_ssl_session *store = &data->state.session[0];
long oldest_age=data->state.session[0].age; /* zero if unused */
char *clone_host;
long *general_age;
/* Even though session ID re-use might be disabled, that only disables USING
IT. We still store it here in case the re-using is again enabled for an
upcoming transfer */
clone_host = strdup(conn->host.name);
if(!clone_host)
return CURLE_OUT_OF_MEMORY; /* bail out */
/* Now we should add the session ID and the host name to the cache, (remove
the oldest if necessary) */
/* If using shared SSL session, lock! */
if(SSLSESSION_SHARED(data)) {
Curl_share_lock(data, CURL_LOCK_DATA_SSL_SESSION, CURL_LOCK_ACCESS_SINGLE);
general_age = &data->share->sessionage;
}
else {
general_age = &data->state.sessionage;
}
/* find an empty slot for us, or find the oldest */
for(i = 1; (i < data->set.ssl.max_ssl_sessions) &&
data->state.session[i].sessionid; i++) {
if(data->state.session[i].age < oldest_age) {
oldest_age = data->state.session[i].age;
store = &data->state.session[i];
}
}
if(i == data->set.ssl.max_ssl_sessions)
/* cache is full, we must "kill" the oldest entry! */
Curl_ssl_kill_session(store);
else
store = &data->state.session[i]; /* use this slot */
/* now init the session struct wisely */
store->sessionid = ssl_sessionid;
store->idsize = idsize;
store->age = *general_age; /* set current age */
if(store->name)
/* free it if there's one already present */
free(store->name);
store->name = clone_host; /* clone host name */
store->remote_port = conn->remote_port; /* port number */
/* Unlock */
if(SSLSESSION_SHARED(data))
Curl_share_unlock(data, CURL_LOCK_DATA_SSL_SESSION);
if(!Curl_clone_ssl_config(&conn->ssl_config, &store->ssl_config)) {
store->sessionid = NULL; /* let caller free sessionid */
free(clone_host);
return CURLE_OUT_OF_MEMORY;
}
return CURLE_OK;
}
void Curl_ssl_close_all(struct SessionHandle *data)
{
size_t i;
/* kill the session ID cache if not shared */
if(data->state.session && !SSLSESSION_SHARED(data)) {
for(i = 0; i < data->set.ssl.max_ssl_sessions; i++)
/* the single-killer function handles empty table slots */
Curl_ssl_kill_session(&data->state.session[i]);
/* free the cache data */
Curl_safefree(data->state.session);
}
curlssl_close_all(data);
}
void Curl_ssl_close(struct connectdata *conn, int sockindex)
{
DEBUGASSERT((sockindex <= 1) && (sockindex >= -1));
curlssl_close(conn, sockindex);
}
CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex)
{
if(curlssl_shutdown(conn, sockindex))
return CURLE_SSL_SHUTDOWN_FAILED;
conn->ssl[sockindex].use = FALSE; /* get back to ordinary socket usage */
conn->ssl[sockindex].state = ssl_connection_none;
conn->recv[sockindex] = Curl_recv_plain;
conn->send[sockindex] = Curl_send_plain;
return CURLE_OK;
}
/* Selects an SSL crypto engine
*/
CURLcode Curl_ssl_set_engine(struct SessionHandle *data, const char *engine)
{
return curlssl_set_engine(data, engine);
}
/* Selects the default SSL crypto engine
*/
CURLcode Curl_ssl_set_engine_default(struct SessionHandle *data)
{
return curlssl_set_engine_default(data);
}
/* Return list of OpenSSL crypto engine names. */
struct curl_slist *Curl_ssl_engines_list(struct SessionHandle *data)
{
return curlssl_engines_list(data);
}
/*
* This sets up a session ID cache to the specified size. Make sure this code
* is agnostic to what underlying SSL technology we use.
*/
CURLcode Curl_ssl_initsessions(struct SessionHandle *data, size_t amount)
{
struct curl_ssl_session *session;
if(data->state.session)
/* this is just a precaution to prevent multiple inits */
return CURLE_OK;
session = calloc(amount, sizeof(struct curl_ssl_session));
if(!session)
return CURLE_OUT_OF_MEMORY;
/* store the info in the SSL section */
data->set.ssl.max_ssl_sessions = amount;
data->state.session = session;
data->state.sessionage = 1; /* this is brand new */
return CURLE_OK;
}
size_t Curl_ssl_version(char *buffer, size_t size)
{
return curlssl_version(buffer, size);
}
/*
* This function tries to determine connection status.
*
* Return codes:
* 1 means the connection is still in place
* 0 means the connection has been closed
* -1 means the connection status is unknown
*/
int Curl_ssl_check_cxn(struct connectdata *conn)
{
return curlssl_check_cxn(conn);
}
bool Curl_ssl_data_pending(const struct connectdata *conn,
int connindex)
{
return curlssl_data_pending(conn, connindex);
}
void Curl_ssl_free_certinfo(struct SessionHandle *data)
{
int i;
struct curl_certinfo *ci = &data->info.certs;
if(ci->num_of_certs) {
/* free all individual lists used */
for(i=0; i<ci->num_of_certs; i++) {
curl_slist_free_all(ci->certinfo[i]);
ci->certinfo[i] = NULL;
}
free(ci->certinfo); /* free the actual array too */
ci->certinfo = NULL;
ci->num_of_certs = 0;
}
}
int Curl_ssl_init_certinfo(struct SessionHandle * data,
int num)
{
struct curl_certinfo * ci = &data->info.certs;
struct curl_slist * * table;
/* Initialize the certificate information structures. Return 0 if OK, else 1.
*/
Curl_ssl_free_certinfo(data);
ci->num_of_certs = num;
table = calloc((size_t) num, sizeof(struct curl_slist *));
if(!table)
return 1;
ci->certinfo = table;
return 0;
}
/*
* 'value' is NOT a zero terminated string
*/
CURLcode Curl_ssl_push_certinfo_len(struct SessionHandle *data,
int certnum,
const char *label,
const char *value,
size_t valuelen)
{
struct curl_certinfo * ci = &data->info.certs;
char * output;
struct curl_slist * nl;
CURLcode res = CURLE_OK;
size_t labellen = strlen(label);
size_t outlen = labellen + 1 + valuelen + 1; /* label:value\0 */
output = malloc(outlen);
if(!output)
return CURLE_OUT_OF_MEMORY;
/* sprintf the label and colon */
snprintf(output, outlen, "%s:", label);
/* memcpy the value (it might not be zero terminated) */
memcpy(&output[labellen+1], value, valuelen);
/* zero terminate the output */
output[labellen + 1 + valuelen] = 0;
nl = Curl_slist_append_nodup(ci->certinfo[certnum], output);
if(!nl) {
free(output);
curl_slist_free_all(ci->certinfo[certnum]);
res = CURLE_OUT_OF_MEMORY;
}
ci->certinfo[certnum] = nl;
return res;
}
/*
* This is a convenience function for push_certinfo_len that takes a zero
* terminated value.
*/
CURLcode Curl_ssl_push_certinfo(struct SessionHandle *data,
int certnum,
const char *label,
const char *value)
{
size_t valuelen = strlen(value);
return Curl_ssl_push_certinfo_len(data, certnum, label, value, valuelen);
}
/* these functions are only provided by some SSL backends */
#ifdef have_curlssl_random
void Curl_ssl_random(struct SessionHandle *data,
unsigned char *entropy,
size_t length)
{
curlssl_random(data, entropy, length);
}
#endif
#ifdef have_curlssl_md5sum
void Curl_ssl_md5sum(unsigned char *tmp, /* input */
size_t tmplen,
unsigned char *md5sum, /* output */
size_t md5len)
{
curlssl_md5sum(tmp, tmplen, md5sum, md5len);
}
#endif
#endif /* USE_SSL */

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#ifndef HEADER_CURL_SSLGEN_H
#define HEADER_CURL_SSLGEN_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2012, 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.
*
***************************************************************************/
#include "curl_setup.h"
#ifndef MD5_DIGEST_LENGTH
#define MD5_DIGEST_LENGTH 16 /* fixed size */
#endif
bool Curl_ssl_config_matches(struct ssl_config_data* data,
struct ssl_config_data* needle);
bool Curl_clone_ssl_config(struct ssl_config_data* source,
struct ssl_config_data* dest);
void Curl_free_ssl_config(struct ssl_config_data* sslc);
unsigned int Curl_rand(struct SessionHandle *);
#ifdef USE_SSL
int Curl_ssl_init(void);
void Curl_ssl_cleanup(void);
CURLcode Curl_ssl_connect(struct connectdata *conn, int sockindex);
CURLcode Curl_ssl_connect_nonblocking(struct connectdata *conn,
int sockindex,
bool *done);
/* tell the SSL stuff to close down all open information regarding
connections (and thus session ID caching etc) */
void Curl_ssl_close_all(struct SessionHandle *data);
void Curl_ssl_close(struct connectdata *conn, int sockindex);
CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex);
CURLcode Curl_ssl_set_engine(struct SessionHandle *data, const char *engine);
/* Sets engine as default for all SSL operations */
CURLcode Curl_ssl_set_engine_default(struct SessionHandle *data);
struct curl_slist *Curl_ssl_engines_list(struct SessionHandle *data);
/* init the SSL session ID cache */
CURLcode Curl_ssl_initsessions(struct SessionHandle *, size_t);
size_t Curl_ssl_version(char *buffer, size_t size);
bool Curl_ssl_data_pending(const struct connectdata *conn,
int connindex);
int Curl_ssl_check_cxn(struct connectdata *conn);
/* Certificate information list handling. */
void Curl_ssl_free_certinfo(struct SessionHandle *data);
int Curl_ssl_init_certinfo(struct SessionHandle * data, int num);
CURLcode Curl_ssl_push_certinfo_len(struct SessionHandle * data, int certnum,
const char * label, const char * value,
size_t valuelen);
CURLcode Curl_ssl_push_certinfo(struct SessionHandle * data, int certnum,
const char * label, const char * value);
/* Functions to be used by SSL library adaptation functions */
/* extract a session ID */
int Curl_ssl_getsessionid(struct connectdata *conn,
void **ssl_sessionid,
size_t *idsize) /* set 0 if unknown */;
/* add a new session ID */
CURLcode Curl_ssl_addsessionid(struct connectdata *conn,
void *ssl_sessionid,
size_t idsize);
/* Kill a single session ID entry in the cache */
void Curl_ssl_kill_session(struct curl_ssl_session *session);
/* delete a session from the cache */
void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid);
/* get N random bytes into the buffer */
void Curl_ssl_random(struct SessionHandle *data, unsigned char *buffer,
size_t length);
void Curl_ssl_md5sum(unsigned char *tmp, /* input */
size_t tmplen,
unsigned char *md5sum, /* output */
size_t md5len);
#define SSL_SHUTDOWN_TIMEOUT 10000 /* ms */
#ifdef have_curlssl_random
#define HAVE_CURL_SSL_RANDOM
#endif
#ifdef have_curlssl_md5sum
#define HAVE_CURL_SSL_MD5SUM
#endif
#else
/* When SSL support is not present, just define away these function calls */
#define Curl_ssl_init() 1
#define Curl_ssl_cleanup() Curl_nop_stmt
#define Curl_ssl_connect(x,y) CURLE_NOT_BUILT_IN
#define Curl_ssl_close_all(x) Curl_nop_stmt
#define Curl_ssl_close(x,y) Curl_nop_stmt
#define Curl_ssl_shutdown(x,y) CURLE_NOT_BUILT_IN
#define Curl_ssl_set_engine(x,y) CURLE_NOT_BUILT_IN
#define Curl_ssl_set_engine_default(x) CURLE_NOT_BUILT_IN
#define Curl_ssl_engines_list(x) NULL
#define Curl_ssl_send(a,b,c,d,e) -1
#define Curl_ssl_recv(a,b,c,d,e) -1
#define Curl_ssl_initsessions(x,y) CURLE_OK
#define Curl_ssl_version(x,y) 0
#define Curl_ssl_data_pending(x,y) 0
#define Curl_ssl_check_cxn(x) 0
#define Curl_ssl_free_certinfo(x) Curl_nop_stmt
#define Curl_ssl_connect_nonblocking(x,y,z) CURLE_NOT_BUILT_IN
#define Curl_ssl_kill_session(x) Curl_nop_stmt
#endif
#endif /* HEADER_CURL_SSLGEN_H */