1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22
23#include "curl_setup.h"
24
25#include <curl/curl.h>
26#include "urldata.h"
27#include "vtls/vtls.h"
28#include "http2.h"
29#include "vssh/ssh.h"
30#include "quic.h"
31#include "curl_printf.h"
32
33#ifdef USE_ARES
34# if defined(CURL_STATICLIB) && !defined(CARES_STATICLIB) && \
35 defined(WIN32)
36# define CARES_STATICLIB
37# endif
38# include <ares.h>
39#endif
40
41#ifdef USE_LIBIDN2
42#include <idn2.h>
43#endif
44
45#ifdef USE_LIBPSL
46#include <libpsl.h>
47#endif
48
49#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
50#include <iconv.h>
51#endif
52
53#ifdef USE_LIBRTMP
54#include <librtmp/rtmp.h>
55#endif
56
57#ifdef HAVE_ZLIB_H
58#include <zlib.h>
59#endif
60
61#ifdef HAVE_BROTLI
62#include <brotli/decode.h>
63#endif
64
65#ifdef HAVE_ZSTD
66#include <zstd.h>
67#endif
68
69#ifdef USE_GSASL
70#include <gsasl.h>
71#endif
72
73#ifdef USE_OPENLDAP
74#include <ldap.h>
75#endif
76
77#ifdef HAVE_BROTLI
78static void brotli_version(char *buf, size_t bufsz)
79{
80 uint32_t brotli_version = BrotliDecoderVersion();
81 unsigned int major = brotli_version >> 24;
82 unsigned int minor = (brotli_version & 0x00FFFFFF) >> 12;
83 unsigned int patch = brotli_version & 0x00000FFF;
84 (void)msnprintf(buf, bufsz, "%u.%u.%u", major, minor, patch);
85}
86#endif
87
88#ifdef HAVE_ZSTD
89static void zstd_version(char *buf, size_t bufsz)
90{
91 unsigned long zstd_version = (unsigned long)ZSTD_versionNumber();
92 unsigned int major = (unsigned int)(zstd_version / (100 * 100));
93 unsigned int minor = (unsigned int)((zstd_version -
94 (major * 100 * 100)) / 100);
95 unsigned int patch = (unsigned int)(zstd_version -
96 (major * 100 * 100) - (minor * 100));
97 (void)msnprintf(buf, bufsz, "%u.%u.%u", major, minor, patch);
98}
99#endif
100
101/*
102 * curl_version() returns a pointer to a static buffer.
103 *
104 * It is implemented to work multi-threaded by making sure repeated invokes
105 * generate the exact same string and never write any temporary data like
106 * zeros in the data.
107 */
108
109#define VERSION_PARTS 17 /* number of substrings we can concatenate */
110
111char *curl_version(void)
112{
113 static char out[300];
114 char *outp;
115 size_t outlen;
116 const char *src[VERSION_PARTS];
117#ifdef USE_SSL
118 char ssl_version[200];
119#endif
120#ifdef HAVE_LIBZ
121 char z_version[40];
122#endif
123#ifdef HAVE_BROTLI
124 char br_version[40] = "brotli/";
125#endif
126#ifdef HAVE_ZSTD
127 char zst_version[40] = "zstd/";
128#endif
129#ifdef USE_ARES
130 char cares_version[40];
131#endif
132#if defined(USE_LIBIDN2)
133 char idn_version[40];
134#endif
135#ifdef USE_LIBPSL
136 char psl_version[40];
137#endif
138#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
139 char iconv_version[40]="iconv";
140#endif
141#ifdef USE_SSH
142 char ssh_version[40];
143#endif
144#ifdef USE_NGHTTP2
145 char h2_version[40];
146#endif
147#ifdef ENABLE_QUIC
148 char h3_version[40];
149#endif
150#ifdef USE_LIBRTMP
151 char rtmp_version[40];
152#endif
153#ifdef USE_HYPER
154 char hyper_buf[30];
155#endif
156#ifdef USE_GSASL
157 char gsasl_buf[30];
158#endif
159#ifdef USE_OPENLDAP
160 char ldap_buf[30];
161#endif
162 int i = 0;
163 int j;
164
165#ifdef DEBUGBUILD
166 /* Override version string when environment variable CURL_VERSION is set */
167 const char *debugversion = getenv("CURL_VERSION");
168 if(debugversion) {
169 strncpy(out, debugversion, sizeof(out)-1);
170 out[sizeof(out)-1] = '\0';
171 return out;
172 }
173#endif
174
175 src[i++] = LIBCURL_NAME "/" LIBCURL_VERSION;
176#ifdef USE_SSL
177 Curl_ssl_version(ssl_version, sizeof(ssl_version));
178 src[i++] = ssl_version;
179#endif
180#ifdef HAVE_LIBZ
181 msnprintf(z_version, sizeof(z_version), "zlib/%s", zlibVersion());
182 src[i++] = z_version;
183#endif
184#ifdef HAVE_BROTLI
185 brotli_version(&br_version[7], sizeof(br_version) - 7);
186 src[i++] = br_version;
187#endif
188#ifdef HAVE_ZSTD
189 zstd_version(&zst_version[5], sizeof(zst_version) - 5);
190 src[i++] = zst_version;
191#endif
192#ifdef USE_ARES
193 msnprintf(cares_version, sizeof(cares_version),
194 "c-ares/%s", ares_version(NULL));
195 src[i++] = cares_version;
196#endif
197#ifdef USE_LIBIDN2
198 msnprintf(idn_version, sizeof(idn_version),
199 "libidn2/%s", idn2_check_version(NULL));
200 src[i++] = idn_version;
201#elif defined(USE_WIN32_IDN)
202 src[i++] = (char *)"WinIDN";
203#endif
204
205#ifdef USE_LIBPSL
206 msnprintf(psl_version, sizeof(psl_version), "libpsl/%s", psl_get_version());
207 src[i++] = psl_version;
208#endif
209#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
210#ifdef _LIBICONV_VERSION
211 msnprintf(iconv_version, sizeof(iconv_version), "iconv/%d.%d",
212 _LIBICONV_VERSION >> 8, _LIBICONV_VERSION & 255);
213#else
214 /* version unknown, let the default stand */
215#endif /* _LIBICONV_VERSION */
216 src[i++] = iconv_version;
217#endif
218#ifdef USE_SSH
219 Curl_ssh_version(ssh_version, sizeof(ssh_version));
220 src[i++] = ssh_version;
221#endif
222#ifdef USE_NGHTTP2
223 Curl_http2_ver(h2_version, sizeof(h2_version));
224 src[i++] = h2_version;
225#endif
226#ifdef ENABLE_QUIC
227 Curl_quic_ver(h3_version, sizeof(h3_version));
228 src[i++] = h3_version;
229#endif
230#ifdef USE_LIBRTMP
231 {
232 char suff[2];
233 if(RTMP_LIB_VERSION & 0xff) {
234 suff[0] = (RTMP_LIB_VERSION & 0xff) + 'a' - 1;
235 suff[1] = '\0';
236 }
237 else
238 suff[0] = '\0';
239
240 msnprintf(rtmp_version, sizeof(rtmp_version), "librtmp/%d.%d%s",
241 RTMP_LIB_VERSION >> 16, (RTMP_LIB_VERSION >> 8) & 0xff,
242 suff);
243 src[i++] = rtmp_version;
244 }
245#endif
246#ifdef USE_HYPER
247 msnprintf(hyper_buf, sizeof(hyper_buf), "Hyper/%s", hyper_version());
248 src[i++] = hyper_buf;
249#endif
250#ifdef USE_GSASL
251 msnprintf(gsasl_buf, sizeof(gsasl_buf), "libgsasl/%s",
252 gsasl_check_version(NULL));
253 src[i++] = gsasl_buf;
254#endif
255#ifdef USE_OPENLDAP
256 {
257 LDAPAPIInfo api;
258 api.ldapai_info_version = LDAP_API_INFO_VERSION;
259
260 if(ldap_get_option(NULL, LDAP_OPT_API_INFO, &api) == LDAP_OPT_SUCCESS) {
261 unsigned int patch = api.ldapai_vendor_version % 100;
262 unsigned int major = api.ldapai_vendor_version / 10000;
263 unsigned int minor =
264 ((api.ldapai_vendor_version - major * 10000) - patch) / 100;
265 msnprintf(ldap_buf, sizeof(ldap_buf), "%s/%u.%u.%u",
266 api.ldapai_vendor_name, major, minor, patch);
267 src[i++] = ldap_buf;
268 ldap_memfree(api.ldapai_vendor_name);
269 ber_memvfree((void **)api.ldapai_extensions);
270 }
271 }
272#endif
273
274 DEBUGASSERT(i <= VERSION_PARTS);
275
276 outp = &out[0];
277 outlen = sizeof(out);
278 for(j = 0; j < i; j++) {
279 size_t n = strlen(src[j]);
280 /* we need room for a space, the string and the final zero */
281 if(outlen <= (n + 2))
282 break;
283 if(j) {
284 /* prepend a space if not the first */
285 *outp++ = ' ';
286 outlen--;
287 }
288 memcpy(outp, src[j], n);
289 outp += n;
290 outlen -= n;
291 }
292 *outp = 0;
293
294 return out;
295}
296
297/* data for curl_version_info
298
299 Keep the list sorted alphabetically. It is also written so that each
300 protocol line has its own #if line to make things easier on the eye.
301 */
302
303static const char * const protocols[] = {
304#ifndef CURL_DISABLE_DICT
305 "dict",
306#endif
307#ifndef CURL_DISABLE_FILE
308 "file",
309#endif
310#ifndef CURL_DISABLE_FTP
311 "ftp",
312#endif
313#if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
314 "ftps",
315#endif
316#ifndef CURL_DISABLE_GOPHER
317 "gopher",
318#endif
319#if defined(USE_SSL) && !defined(CURL_DISABLE_GOPHER)
320 "gophers",
321#endif
322#ifndef CURL_DISABLE_HTTP
323 "http",
324#endif
325#if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
326 "https",
327#endif
328#ifndef CURL_DISABLE_IMAP
329 "imap",
330#endif
331#if defined(USE_SSL) && !defined(CURL_DISABLE_IMAP)
332 "imaps",
333#endif
334#ifndef CURL_DISABLE_LDAP
335 "ldap",
336#if !defined(CURL_DISABLE_LDAPS) && \
337 ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
338 (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
339 "ldaps",
340#endif
341#endif
342#ifndef CURL_DISABLE_MQTT
343 "mqtt",
344#endif
345#ifndef CURL_DISABLE_POP3
346 "pop3",
347#endif
348#if defined(USE_SSL) && !defined(CURL_DISABLE_POP3)
349 "pop3s",
350#endif
351#ifdef USE_LIBRTMP
352 "rtmp",
353#endif
354#ifndef CURL_DISABLE_RTSP
355 "rtsp",
356#endif
357#if defined(USE_SSH) && !defined(USE_WOLFSSH)
358 "scp",
359#endif
360#ifdef USE_SSH
361 "sftp",
362#endif
363#if !defined(CURL_DISABLE_SMB) && defined(USE_CURL_NTLM_CORE) && \
364 (SIZEOF_CURL_OFF_T > 4)
365 "smb",
366# ifdef USE_SSL
367 "smbs",
368# endif
369#endif
370#ifndef CURL_DISABLE_SMTP
371 "smtp",
372#endif
373#if defined(USE_SSL) && !defined(CURL_DISABLE_SMTP)
374 "smtps",
375#endif
376#ifndef CURL_DISABLE_TELNET
377 "telnet",
378#endif
379#ifndef CURL_DISABLE_TFTP
380 "tftp",
381#endif
382
383 NULL
384};
385
386static curl_version_info_data version_info = {
387 CURLVERSION_NOW,
388 LIBCURL_VERSION,
389 LIBCURL_VERSION_NUM,
390 OS, /* as found by configure or set by hand at build-time */
391 0 /* features is 0 by default */
392#ifdef ENABLE_IPV6
393 | CURL_VERSION_IPV6
394#endif
395#ifdef USE_SSL
396 | CURL_VERSION_SSL
397#endif
398#ifdef USE_NTLM
399 | CURL_VERSION_NTLM
400#endif
401#if !defined(CURL_DISABLE_HTTP) && defined(USE_NTLM) && \
402 defined(NTLM_WB_ENABLED)
403 | CURL_VERSION_NTLM_WB
404#endif
405#ifdef USE_SPNEGO
406 | CURL_VERSION_SPNEGO
407#endif
408#ifdef USE_KERBEROS5
409 | CURL_VERSION_KERBEROS5
410#endif
411#ifdef HAVE_GSSAPI
412 | CURL_VERSION_GSSAPI
413#endif
414#ifdef USE_WINDOWS_SSPI
415 | CURL_VERSION_SSPI
416#endif
417#ifdef HAVE_LIBZ
418 | CURL_VERSION_LIBZ
419#endif
420#ifdef DEBUGBUILD
421 | CURL_VERSION_DEBUG
422#endif
423#ifdef CURLDEBUG
424 | CURL_VERSION_CURLDEBUG
425#endif
426#ifdef CURLRES_ASYNCH
427 | CURL_VERSION_ASYNCHDNS
428#endif
429#if (SIZEOF_CURL_OFF_T > 4) && \
430 ( (SIZEOF_OFF_T > 4) || defined(USE_WIN32_LARGE_FILES) )
431 | CURL_VERSION_LARGEFILE
432#endif
433#if defined(WIN32) && defined(UNICODE) && defined(_UNICODE)
434 | CURL_VERSION_UNICODE
435#endif
436#if defined(CURL_DOES_CONVERSIONS)
437 | CURL_VERSION_CONV
438#endif
439#if defined(USE_TLS_SRP)
440 | CURL_VERSION_TLSAUTH_SRP
441#endif
442#if defined(USE_NGHTTP2) || defined(USE_HYPER)
443 | CURL_VERSION_HTTP2
444#endif
445#if defined(ENABLE_QUIC)
446 | CURL_VERSION_HTTP3
447#endif
448#if defined(USE_UNIX_SOCKETS)
449 | CURL_VERSION_UNIX_SOCKETS
450#endif
451#if defined(USE_LIBPSL)
452 | CURL_VERSION_PSL
453#endif
454#if defined(CURL_WITH_MULTI_SSL)
455 | CURL_VERSION_MULTI_SSL
456#endif
457#if defined(HAVE_BROTLI)
458 | CURL_VERSION_BROTLI
459#endif
460#if defined(HAVE_ZSTD)
461 | CURL_VERSION_ZSTD
462#endif
463#ifndef CURL_DISABLE_ALTSVC
464 | CURL_VERSION_ALTSVC
465#endif
466#ifndef CURL_DISABLE_HSTS
467 | CURL_VERSION_HSTS
468#endif
469#if defined(USE_GSASL)
470 | CURL_VERSION_GSASL
471#endif
472 ,
473 NULL, /* ssl_version */
474 0, /* ssl_version_num, this is kept at zero */
475 NULL, /* zlib_version */
476 protocols,
477 NULL, /* c-ares version */
478 0, /* c-ares version numerical */
479 NULL, /* libidn version */
480 0, /* iconv version */
481 NULL, /* ssh lib version */
482 0, /* brotli_ver_num */
483 NULL, /* brotli version */
484 0, /* nghttp2 version number */
485 NULL, /* nghttp2 version string */
486 NULL, /* quic library string */
487#ifdef CURL_CA_BUNDLE
488 CURL_CA_BUNDLE, /* cainfo */
489#else
490 NULL,
491#endif
492#ifdef CURL_CA_PATH
493 CURL_CA_PATH, /* capath */
494#else
495 NULL,
496#endif
497 0, /* zstd_ver_num */
498 NULL, /* zstd version */
499 NULL, /* Hyper version */
500 NULL /* gsasl version */
501};
502
503curl_version_info_data *curl_version_info(CURLversion stamp)
504{
505#if defined(USE_SSH)
506 static char ssh_buffer[80];
507#endif
508#ifdef USE_SSL
509#ifdef CURL_WITH_MULTI_SSL
510 static char ssl_buffer[200];
511#else
512 static char ssl_buffer[80];
513#endif
514#endif
515#ifdef HAVE_BROTLI
516 static char brotli_buffer[80];
517#endif
518#ifdef HAVE_ZSTD
519 static char zstd_buffer[80];
520#endif
521
522#ifdef USE_SSL
523 Curl_ssl_version(ssl_buffer, sizeof(ssl_buffer));
524 version_info.ssl_version = ssl_buffer;
525#ifndef CURL_DISABLE_PROXY
526 if(Curl_ssl->supports & SSLSUPP_HTTPS_PROXY)
527 version_info.features |= CURL_VERSION_HTTPS_PROXY;
528 else
529 version_info.features &= ~CURL_VERSION_HTTPS_PROXY;
530#endif
531#endif
532
533#ifdef HAVE_LIBZ
534 version_info.libz_version = zlibVersion();
535 /* libz left NULL if non-existing */
536#endif
537#ifdef USE_ARES
538 {
539 int aresnum;
540 version_info.ares = ares_version(&aresnum);
541 version_info.ares_num = aresnum;
542 }
543#endif
544#ifdef USE_LIBIDN2
545 /* This returns a version string if we use the given version or later,
546 otherwise it returns NULL */
547 version_info.libidn = idn2_check_version(IDN2_VERSION);
548 if(version_info.libidn)
549 version_info.features |= CURL_VERSION_IDN;
550#elif defined(USE_WIN32_IDN)
551 version_info.features |= CURL_VERSION_IDN;
552#endif
553
554#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
555#ifdef _LIBICONV_VERSION
556 version_info.iconv_ver_num = _LIBICONV_VERSION;
557#else
558 /* version unknown */
559 version_info.iconv_ver_num = -1;
560#endif /* _LIBICONV_VERSION */
561#endif
562
563#if defined(USE_SSH)
564 Curl_ssh_version(ssh_buffer, sizeof(ssh_buffer));
565 version_info.libssh_version = ssh_buffer;
566#endif
567
568#ifdef HAVE_BROTLI
569 version_info.brotli_ver_num = BrotliDecoderVersion();
570 brotli_version(brotli_buffer, sizeof(brotli_buffer));
571 version_info.brotli_version = brotli_buffer;
572#endif
573
574#ifdef HAVE_ZSTD
575 version_info.zstd_ver_num = (unsigned int)ZSTD_versionNumber();
576 zstd_version(zstd_buffer, sizeof(zstd_buffer));
577 version_info.zstd_version = zstd_buffer;
578#endif
579
580#ifdef USE_NGHTTP2
581 {
582 nghttp2_info *h2 = nghttp2_version(0);
583 version_info.nghttp2_ver_num = h2->version_num;
584 version_info.nghttp2_version = h2->version_str;
585 }
586#endif
587
588#ifdef ENABLE_QUIC
589 {
590 static char quicbuffer[80];
591 Curl_quic_ver(quicbuffer, sizeof(quicbuffer));
592 version_info.quic_version = quicbuffer;
593 }
594#endif
595
596#ifdef USE_HYPER
597 {
598 static char hyper_buffer[30];
599 msnprintf(hyper_buffer, sizeof(hyper_buffer), "Hyper/%s", hyper_version());
600 version_info.hyper_version = hyper_buffer;
601 }
602#endif
603
604#ifdef USE_GSASL
605 {
606 version_info.gsasl_version = gsasl_check_version(NULL);
607 }
608#endif
609
610 (void)stamp; /* avoid compiler warnings, we don't use this */
611 return &version_info;
612}
613