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a1f06f32b8
curl/lib/version.c
parazyd a1f06f32b8
gopher: Implement secure gopher protocol. 
This commit introduces a "gophers" handler inside the gopher protocol if
USE_SSL is defined. This protocol is no different than the usual gopher
prococol, with the added TLS encapsulation upon connecting. The protocol
has been adopted in the gopher community, and many people have enabled
TLS in their gopher daemons like geomyidae(8), and clients, like clic(1)
and hurl(1).

I have not implemented test units for this protocol because my knowledge
of Perl is sub-par. However, for someone more knowledgeable it might be
fairly trivial, because the same test that tests the plain gopher
protocol can be used for "gophers" just by adding a TLS listener.

Signed-off-by: parazyd <parazyd@dyne.org>

Closes #6208
2020-12-15 12:58:12 +01:00

553 lines
13 KiB
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2020, 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 https://curl.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"
#include <curl/curl.h>
#include "urldata.h"
#include "vtls/vtls.h"
#include "http2.h"
#include "vssh/ssh.h"
#include "quic.h"
#include "curl_printf.h"
#ifdef USE_ARES
# if defined(CURL_STATICLIB) && !defined(CARES_STATICLIB) && \
defined(WIN32)
# define CARES_STATICLIB
# endif
# include <ares.h>
#endif
#ifdef USE_LIBIDN2
#include <idn2.h>
#endif
#ifdef USE_LIBPSL
#include <libpsl.h>
#endif
#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
#include <iconv.h>
#endif
#ifdef USE_LIBRTMP
#include <librtmp/rtmp.h>
#endif
#ifdef HAVE_ZLIB_H
#include <zlib.h>
#endif
#ifdef HAVE_BROTLI
#include <brotli/decode.h>
#endif
#ifdef HAVE_ZSTD
#include <zstd.h>
#endif
#ifdef HAVE_BROTLI
static size_t brotli_version(char *buf, size_t bufsz)
{
uint32_t brotli_version = BrotliDecoderVersion();
unsigned int major = brotli_version >> 24;
unsigned int minor = (brotli_version & 0x00FFFFFF) >> 12;
unsigned int patch = brotli_version & 0x00000FFF;
return msnprintf(buf, bufsz, "%u.%u.%u", major, minor, patch);
}
#endif
#ifdef HAVE_ZSTD
static size_t zstd_version(char *buf, size_t bufsz)
{
unsigned long zstd_version = (unsigned long)ZSTD_versionNumber();
unsigned int major = (unsigned int)(zstd_version / (100 * 100));
unsigned int minor = (unsigned int)((zstd_version -
(major * 100 * 100)) / 100);
unsigned int patch = (unsigned int)(zstd_version -
(major * 100 * 100) - (minor * 100));
return msnprintf(buf, bufsz, "%u.%u.%u", major, minor, patch);
}
#endif
/*
* curl_version() returns a pointer to a static buffer.
*
* It is implemented to work multi-threaded by making sure repeated invokes
* generate the exact same string and never write any temporary data like
* zeros in the data.
*/
#define VERSION_PARTS 14 /* number of substrings we can concatenate */
char *curl_version(void)
{
static char out[300];
char *outp;
size_t outlen;
const char *src[VERSION_PARTS];
#ifdef USE_SSL
char ssl_version[200];
#endif
#ifdef HAVE_LIBZ
char z_version[40];
#endif
#ifdef HAVE_BROTLI
char br_version[40] = "brotli/";
#endif
#ifdef HAVE_ZSTD
char zst_version[40] = "zstd/";
#endif
#ifdef USE_ARES
char cares_version[40];
#endif
#if defined(USE_LIBIDN2)
char idn_version[40];
#endif
#ifdef USE_LIBPSL
char psl_version[40];
#endif
#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
char iconv_version[40]="iconv";
#endif
#ifdef USE_SSH
char ssh_version[40];
#endif
#ifdef USE_NGHTTP2
char h2_version[40];
#endif
#ifdef ENABLE_QUIC
char h3_version[40];
#endif
#ifdef USE_LIBRTMP
char rtmp_version[40];
#endif
int i = 0;
int j;
#ifdef DEBUGBUILD
/* Override version string when environment variable CURL_VERSION is set */
const char *debugversion = getenv("CURL_VERSION");
if(debugversion) {
strncpy(out, debugversion, sizeof(out)-1);
out[sizeof(out)-1] = '\0';
return out;
}
#endif
src[i++] = LIBCURL_NAME "/" LIBCURL_VERSION;
#ifdef USE_SSL
Curl_ssl_version(ssl_version, sizeof(ssl_version));
src[i++] = ssl_version;
#endif
#ifdef HAVE_LIBZ
msnprintf(z_version, sizeof(z_version), "zlib/%s", zlibVersion());
src[i++] = z_version;
#endif
#ifdef HAVE_BROTLI
brotli_version(&br_version[7], sizeof(br_version) - 7);
src[i++] = br_version;
#endif
#ifdef HAVE_ZSTD
zstd_version(&zst_version[5], sizeof(zst_version) - 5);
src[i++] = zst_version;
#endif
#ifdef USE_ARES
msnprintf(cares_version, sizeof(cares_version),
"c-ares/%s", ares_version(NULL));
src[i++] = cares_version;
#endif
#ifdef USE_LIBIDN2
msnprintf(idn_version, sizeof(idn_version),
"libidn2/%s", idn2_check_version(NULL));
src[i++] = idn_version;
#elif defined(USE_WIN32_IDN)
src[i++] = (char *)"WinIDN";
#endif
#ifdef USE_LIBPSL
msnprintf(psl_version, sizeof(psl_version), "libpsl/%s", psl_get_version());
src[i++] = psl_version;
#endif
#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
#ifdef _LIBICONV_VERSION
msnprintf(iconv_version, sizeof(iconv_version), "iconv/%d.%d",
_LIBICONV_VERSION >> 8, _LIBICONV_VERSION & 255);
#else
/* version unknown, let the default stand */
#endif /* _LIBICONV_VERSION */
src[i++] = iconv_version;
#endif
#ifdef USE_SSH
Curl_ssh_version(ssh_version, sizeof(ssh_version));
src[i++] = ssh_version;
#endif
#ifdef USE_NGHTTP2
Curl_http2_ver(h2_version, sizeof(h2_version));
src[i++] = h2_version;
#endif
#ifdef ENABLE_QUIC
Curl_quic_ver(h3_version, sizeof(h3_version));
src[i++] = h3_version;
#endif
#ifdef USE_LIBRTMP
{
char suff[2];
if(RTMP_LIB_VERSION & 0xff) {
suff[0] = (RTMP_LIB_VERSION & 0xff) + 'a' - 1;
suff[1] = '\0';
}
else
suff[0] = '\0';
msnprintf(rtmp_version, sizeof(rtmp_version), "librtmp/%d.%d%s",
RTMP_LIB_VERSION >> 16, (RTMP_LIB_VERSION >> 8) & 0xff,
suff);
src[i++] = rtmp_version;
}
#endif
DEBUGASSERT(i <= VERSION_PARTS);
outp = &out[0];
outlen = sizeof(out);
for(j = 0; j < i; j++) {
size_t n = strlen(src[j]);
/* we need room for a space, the string and the final zero */
if(outlen <= (n + 2))
break;
if(j) {
/* prepend a space if not the first */
*outp++ = ' ';
outlen--;
}
memcpy(outp, src[j], n);
outp += n;
outlen -= n;
}
*outp = 0;
return out;
}
/* data for curl_version_info
Keep the list sorted alphabetically. It is also written so that each
protocol line has its own #if line to make things easier on the eye.
*/
static const char * const protocols[] = {
#ifndef CURL_DISABLE_DICT
"dict",
#endif
#ifndef CURL_DISABLE_FILE
"file",
#endif
#ifndef CURL_DISABLE_FTP
"ftp",
#endif
#if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
"ftps",
#endif
#ifndef CURL_DISABLE_GOPHER
"gopher",
#endif
#if defined(USE_SSL) && !defined(CURL_DISABLE_GOPHER)
"gophers",
#endif
#ifndef CURL_DISABLE_HTTP
"http",
#endif
#if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
"https",
#endif
#ifndef CURL_DISABLE_IMAP
"imap",
#endif
#if defined(USE_SSL) && !defined(CURL_DISABLE_IMAP)
"imaps",
#endif
#ifndef CURL_DISABLE_LDAP
"ldap",
#if !defined(CURL_DISABLE_LDAPS) && \
((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
(!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
"ldaps",
#endif
#endif
#ifndef CURL_DISABLE_MQTT
"mqtt",
#endif
#ifndef CURL_DISABLE_POP3
"pop3",
#endif
#if defined(USE_SSL) && !defined(CURL_DISABLE_POP3)
"pop3s",
#endif
#ifdef USE_LIBRTMP
"rtmp",
#endif
#ifndef CURL_DISABLE_RTSP
"rtsp",
#endif
#if defined(USE_SSH) && !defined(USE_WOLFSSH)
"scp",
#endif
#ifdef USE_SSH
"sftp",
#endif
#if !defined(CURL_DISABLE_SMB) && defined(USE_CURL_NTLM_CORE) && \
(CURL_SIZEOF_CURL_OFF_T > 4)
"smb",
# ifdef USE_SSL
"smbs",
# endif
#endif
#ifndef CURL_DISABLE_SMTP
"smtp",
#endif
#if defined(USE_SSL) && !defined(CURL_DISABLE_SMTP)
"smtps",
#endif
#ifndef CURL_DISABLE_TELNET
"telnet",
#endif
#ifndef CURL_DISABLE_TFTP
"tftp",
#endif
NULL
};
static curl_version_info_data version_info = {
CURLVERSION_NOW,
LIBCURL_VERSION,
LIBCURL_VERSION_NUM,
OS, /* as found by configure or set by hand at build-time */
0 /* features is 0 by default */
#ifdef ENABLE_IPV6
| CURL_VERSION_IPV6
#endif
#ifdef USE_SSL
| CURL_VERSION_SSL
#endif
#ifdef USE_NTLM
| CURL_VERSION_NTLM
#endif
#if !defined(CURL_DISABLE_HTTP) && defined(USE_NTLM) && \
defined(NTLM_WB_ENABLED)
| CURL_VERSION_NTLM_WB
#endif
#ifdef USE_SPNEGO
| CURL_VERSION_SPNEGO
#endif
#ifdef USE_KERBEROS5
| CURL_VERSION_KERBEROS5
#endif
#ifdef HAVE_GSSAPI
| CURL_VERSION_GSSAPI
#endif
#ifdef USE_WINDOWS_SSPI
| CURL_VERSION_SSPI
#endif
#ifdef HAVE_LIBZ
| CURL_VERSION_LIBZ
#endif
#ifdef DEBUGBUILD
| CURL_VERSION_DEBUG
#endif
#ifdef CURLDEBUG
| CURL_VERSION_CURLDEBUG
#endif
#ifdef CURLRES_ASYNCH
| CURL_VERSION_ASYNCHDNS
#endif
#if (CURL_SIZEOF_CURL_OFF_T > 4) && \
( (SIZEOF_OFF_T > 4) || defined(USE_WIN32_LARGE_FILES) )
| CURL_VERSION_LARGEFILE
#endif
#if defined(WIN32) && defined(UNICODE) && defined(_UNICODE)
| CURL_VERSION_UNICODE
#endif
#if defined(CURL_DOES_CONVERSIONS)
| CURL_VERSION_CONV
#endif
#if defined(USE_TLS_SRP)
| CURL_VERSION_TLSAUTH_SRP
#endif
#if defined(USE_NGHTTP2)
| CURL_VERSION_HTTP2
#endif
#if defined(ENABLE_QUIC)
| CURL_VERSION_HTTP3
#endif
#if defined(USE_UNIX_SOCKETS)
| CURL_VERSION_UNIX_SOCKETS
#endif
#if defined(USE_LIBPSL)
| CURL_VERSION_PSL
#endif
#if defined(CURL_WITH_MULTI_SSL)
| CURL_VERSION_MULTI_SSL
#endif
#if defined(HAVE_BROTLI)
| CURL_VERSION_BROTLI
#endif
#if defined(HAVE_ZSTD)
| CURL_VERSION_ZSTD
#endif
#ifndef CURL_DISABLE_ALTSVC
| CURL_VERSION_ALTSVC
#endif
#if defined(USE_HSTS)
| CURL_VERSION_HSTS
#endif
,
NULL, /* ssl_version */
0, /* ssl_version_num, this is kept at zero */
NULL, /* zlib_version */
protocols,
NULL, /* c-ares version */
0, /* c-ares version numerical */
NULL, /* libidn version */
0, /* iconv version */
NULL, /* ssh lib version */
0, /* brotli_ver_num */
NULL, /* brotli version */
0, /* nghttp2 version number */
NULL, /* nghttp2 version string */
NULL, /* quic library string */
#ifdef CURL_CA_BUNDLE
CURL_CA_BUNDLE, /* cainfo */
#else
NULL,
#endif
#ifdef CURL_CA_PATH
CURL_CA_PATH, /* capath */
#else
NULL,
#endif
0, /* zstd_ver_num */
NULL /* zstd version */
};
curl_version_info_data *curl_version_info(CURLversion stamp)
{
#if defined(USE_SSH)
static char ssh_buffer[80];
#endif
#ifdef USE_SSL
#ifdef CURL_WITH_MULTI_SSL
static char ssl_buffer[200];
#else
static char ssl_buffer[80];
#endif
#endif
#ifdef HAVE_BROTLI
static char brotli_buffer[80];
#endif
#ifdef HAVE_ZSTD
static char zstd_buffer[80];
#endif
#ifdef USE_SSL
Curl_ssl_version(ssl_buffer, sizeof(ssl_buffer));
version_info.ssl_version = ssl_buffer;
#ifndef CURL_DISABLE_PROXY
if(Curl_ssl->supports & SSLSUPP_HTTPS_PROXY)
version_info.features |= CURL_VERSION_HTTPS_PROXY;
else
version_info.features &= ~CURL_VERSION_HTTPS_PROXY;
#endif
#endif
#ifdef HAVE_LIBZ
version_info.libz_version = zlibVersion();
/* libz left NULL if non-existing */
#endif
#ifdef USE_ARES
{
int aresnum;
version_info.ares = ares_version(&aresnum);
version_info.ares_num = aresnum;
}
#endif
#ifdef USE_LIBIDN2
/* This returns a version string if we use the given version or later,
otherwise it returns NULL */
version_info.libidn = idn2_check_version(IDN2_VERSION);
if(version_info.libidn)
version_info.features |= CURL_VERSION_IDN;
#elif defined(USE_WIN32_IDN)
version_info.features |= CURL_VERSION_IDN;
#endif
#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
#ifdef _LIBICONV_VERSION
version_info.iconv_ver_num = _LIBICONV_VERSION;
#else
/* version unknown */
version_info.iconv_ver_num = -1;
#endif /* _LIBICONV_VERSION */
#endif
#if defined(USE_SSH)
Curl_ssh_version(ssh_buffer, sizeof(ssh_buffer));
version_info.libssh_version = ssh_buffer;
#endif
#ifdef HAVE_BROTLI
version_info.brotli_ver_num = BrotliDecoderVersion();
brotli_version(brotli_buffer, sizeof(brotli_buffer));
version_info.brotli_version = brotli_buffer;
#endif
#ifdef HAVE_ZSTD
version_info.zstd_ver_num = (unsigned int)ZSTD_versionNumber();
zstd_version(zstd_buffer, sizeof(zstd_buffer));
version_info.zstd_version = zstd_buffer;
#endif
#ifdef USE_NGHTTP2
{
nghttp2_info *h2 = nghttp2_version(0);
version_info.nghttp2_ver_num = h2->version_num;
version_info.nghttp2_version = h2->version_str;
}
#endif
#ifdef ENABLE_QUIC
{
static char quicbuffer[80];
Curl_quic_ver(quicbuffer, sizeof(quicbuffer));
version_info.quic_version = quicbuffer;
}
#endif
(void)stamp; /* avoid compiler warnings, we don't use this */
return &version_info;
}
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