1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 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 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24
25 #include "curl_setup.h"
26
27 #ifdef USE_NGHTTP2
28 #include <nghttp2/nghttp2.h>
29 #endif
30
31 #include <curl/curl.h>
32 #include "urldata.h"
33 #include "vtls/vtls.h"
34 #include "http2.h"
35 #include "vssh/ssh.h"
36 #include "vquic/vquic.h"
37 #include "curl_printf.h"
38 #include "easy_lock.h"
39
40 #ifdef USE_ARES
41 # if defined(CURL_STATICLIB) && !defined(CARES_STATICLIB) && \
42 defined(WIN32)
43 # define CARES_STATICLIB
44 # endif
45 # include <ares.h>
46 #endif
47
48 #ifdef USE_LIBIDN2
49 #include <idn2.h>
50 #endif
51
52 #ifdef USE_LIBPSL
53 #include <libpsl.h>
54 #endif
55
56 #ifdef USE_LIBRTMP
57 #include <librtmp/rtmp.h>
58 #endif
59
60 #ifdef HAVE_LIBZ
61 #include <zlib.h>
62 #endif
63
64 #ifdef HAVE_BROTLI
65 #if defined(__GNUC__)
66 /* Ignore -Wvla warnings in brotli headers */
67 #pragma GCC diagnostic push
68 #pragma GCC diagnostic ignored "-Wvla"
69 #endif
70 #include <brotli/decode.h>
71 #if defined(__GNUC__)
72 #pragma GCC diagnostic pop
73 #endif
74 #endif
75
76 #ifdef HAVE_ZSTD
77 #include <zstd.h>
78 #endif
79
80 #ifdef USE_GSASL
81 #include <gsasl.h>
82 #endif
83
84 #ifdef USE_OPENLDAP
85 #include <ldap.h>
86 #endif
87
88 #ifdef HAVE_BROTLI
brotli_version(char * buf,size_t bufsz)89 static void brotli_version(char *buf, size_t bufsz)
90 {
91 uint32_t brotli_version = BrotliDecoderVersion();
92 unsigned int major = brotli_version >> 24;
93 unsigned int minor = (brotli_version & 0x00FFFFFF) >> 12;
94 unsigned int patch = brotli_version & 0x00000FFF;
95 (void)msnprintf(buf, bufsz, "%u.%u.%u", major, minor, patch);
96 }
97 #endif
98
99 #ifdef HAVE_ZSTD
zstd_version(char * buf,size_t bufsz)100 static void zstd_version(char *buf, size_t bufsz)
101 {
102 unsigned long zstd_version = (unsigned long)ZSTD_versionNumber();
103 unsigned int major = (unsigned int)(zstd_version / (100 * 100));
104 unsigned int minor = (unsigned int)((zstd_version -
105 (major * 100 * 100)) / 100);
106 unsigned int patch = (unsigned int)(zstd_version -
107 (major * 100 * 100) - (minor * 100));
108 (void)msnprintf(buf, bufsz, "%u.%u.%u", major, minor, patch);
109 }
110 #endif
111
112 /*
113 * curl_version() returns a pointer to a static buffer.
114 *
115 * It is implemented to work multi-threaded by making sure repeated invokes
116 * generate the exact same string and never write any temporary data like
117 * zeros in the data.
118 */
119
120 #define VERSION_PARTS 16 /* number of substrings we can concatenate */
121
curl_version(void)122 char *curl_version(void)
123 {
124 static char out[300];
125 char *outp;
126 size_t outlen;
127 const char *src[VERSION_PARTS];
128 #ifdef USE_SSL
129 char ssl_version[200];
130 #endif
131 #ifdef HAVE_LIBZ
132 char z_version[40];
133 #endif
134 #ifdef HAVE_BROTLI
135 char br_version[40] = "brotli/";
136 #endif
137 #ifdef HAVE_ZSTD
138 char zst_version[40] = "zstd/";
139 #endif
140 #ifdef USE_ARES
141 char cares_version[40];
142 #endif
143 #if defined(USE_LIBIDN2)
144 char idn_version[40];
145 #endif
146 #ifdef USE_LIBPSL
147 char psl_version[40];
148 #endif
149 #ifdef USE_SSH
150 char ssh_version[40];
151 #endif
152 #ifdef USE_NGHTTP2
153 char h2_version[40];
154 #endif
155 #ifdef ENABLE_QUIC
156 char h3_version[40];
157 #endif
158 #ifdef USE_LIBRTMP
159 char rtmp_version[40];
160 #endif
161 #ifdef USE_HYPER
162 char hyper_buf[30];
163 #endif
164 #ifdef USE_GSASL
165 char gsasl_buf[30];
166 #endif
167 #ifdef USE_OPENLDAP
168 char ldap_buf[30];
169 #endif
170 int i = 0;
171 int j;
172
173 #ifdef DEBUGBUILD
174 /* Override version string when environment variable CURL_VERSION is set */
175 const char *debugversion = getenv("CURL_VERSION");
176 if(debugversion) {
177 strncpy(out, debugversion, sizeof(out)-1);
178 out[sizeof(out)-1] = '\0';
179 return out;
180 }
181 #endif
182
183 src[i++] = LIBCURL_NAME "/" LIBCURL_VERSION;
184 #ifdef USE_SSL
185 Curl_ssl_version(ssl_version, sizeof(ssl_version));
186 src[i++] = ssl_version;
187 #endif
188 #ifdef HAVE_LIBZ
189 msnprintf(z_version, sizeof(z_version), "zlib/%s", zlibVersion());
190 src[i++] = z_version;
191 #endif
192 #ifdef HAVE_BROTLI
193 brotli_version(&br_version[7], sizeof(br_version) - 7);
194 src[i++] = br_version;
195 #endif
196 #ifdef HAVE_ZSTD
197 zstd_version(&zst_version[5], sizeof(zst_version) - 5);
198 src[i++] = zst_version;
199 #endif
200 #ifdef USE_ARES
201 msnprintf(cares_version, sizeof(cares_version),
202 "c-ares/%s", ares_version(NULL));
203 src[i++] = cares_version;
204 #endif
205 #ifdef USE_LIBIDN2
206 msnprintf(idn_version, sizeof(idn_version),
207 "libidn2/%s", idn2_check_version(NULL));
208 src[i++] = idn_version;
209 #elif defined(USE_WIN32_IDN)
210 src[i++] = (char *)"WinIDN";
211 #endif
212
213 #ifdef USE_LIBPSL
214 msnprintf(psl_version, sizeof(psl_version), "libpsl/%s", psl_get_version());
215 src[i++] = psl_version;
216 #endif
217
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
303 static const char * const supported_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 "rtmpe",
354 "rtmps",
355 "rtmpt",
356 "rtmpte",
357 "rtmpts",
358 #endif
359 #ifndef CURL_DISABLE_RTSP
360 "rtsp",
361 #endif
362 #if defined(USE_SSH) && !defined(USE_WOLFSSH)
363 "scp",
364 #endif
365 #ifdef USE_SSH
366 "sftp",
367 #endif
368 #if !defined(CURL_DISABLE_SMB) && defined(USE_CURL_NTLM_CORE)
369 "smb",
370 # ifdef USE_SSL
371 "smbs",
372 # endif
373 #endif
374 #ifndef CURL_DISABLE_SMTP
375 "smtp",
376 #endif
377 #if defined(USE_SSL) && !defined(CURL_DISABLE_SMTP)
378 "smtps",
379 #endif
380 #ifndef CURL_DISABLE_TELNET
381 "telnet",
382 #endif
383 #ifndef CURL_DISABLE_TFTP
384 "tftp",
385 #endif
386 #ifdef USE_WEBSOCKETS
387 "ws",
388 #endif
389 #if defined(USE_SSL) && defined(USE_WEBSOCKETS)
390 "wss",
391 #endif
392
393 NULL
394 };
395
396 /*
397 * Feature presence run-time check functions.
398 *
399 * Warning: the value returned by these should not change between
400 * curl_global_init() and curl_global_cleanup() calls.
401 */
402
403 #if defined(USE_LIBIDN2)
idn_present(curl_version_info_data * info)404 static int idn_present(curl_version_info_data *info)
405 {
406 return info->libidn != NULL;
407 }
408 #else
409 #define idn_present NULL
410 #endif
411
412 #if defined(USE_SSL) && !defined(CURL_DISABLE_PROXY)
https_proxy_present(curl_version_info_data * info)413 static int https_proxy_present(curl_version_info_data *info)
414 {
415 (void) info;
416 return Curl_ssl_supports(NULL, SSLSUPP_HTTPS_PROXY);
417 }
418 #endif
419
420 /*
421 * Features table.
422 *
423 * Keep the features alphabetically sorted.
424 * Use FEATURE() macro to define an entry: this allows documentation check.
425 */
426
427 #define FEATURE(name, present, bitmask) {(name), (present), (bitmask)}
428
429 struct feat {
430 const char *name;
431 int (*present)(curl_version_info_data *info);
432 int bitmask;
433 };
434
435 static const struct feat features_table[] = {
436 #ifndef CURL_DISABLE_ALTSVC
437 FEATURE("alt-svc", NULL, CURL_VERSION_ALTSVC),
438 #endif
439 #ifdef CURLRES_ASYNCH
440 FEATURE("AsynchDNS", NULL, CURL_VERSION_ASYNCHDNS),
441 #endif
442 #ifdef HAVE_BROTLI
443 FEATURE("brotli", NULL, CURL_VERSION_BROTLI),
444 #endif
445 #ifdef DEBUGBUILD
446 FEATURE("Debug", NULL, CURL_VERSION_DEBUG),
447 #endif
448 #ifdef USE_GSASL
449 FEATURE("gsasl", NULL, CURL_VERSION_GSASL),
450 #endif
451 #ifdef HAVE_GSSAPI
452 FEATURE("GSS-API", NULL, CURL_VERSION_GSSAPI),
453 #endif
454 #ifndef CURL_DISABLE_HSTS
455 FEATURE("HSTS", NULL, CURL_VERSION_HSTS),
456 #endif
457 #if defined(USE_NGHTTP2) || defined(USE_HYPER)
458 FEATURE("HTTP2", NULL, CURL_VERSION_HTTP2),
459 #endif
460 #if defined(ENABLE_QUIC)
461 FEATURE("HTTP3", NULL, CURL_VERSION_HTTP3),
462 #endif
463 #if defined(USE_SSL) && !defined(CURL_DISABLE_PROXY)
464 FEATURE("HTTPS-proxy", https_proxy_present, CURL_VERSION_HTTPS_PROXY),
465 #endif
466 #if defined(USE_LIBIDN2) || defined(USE_WIN32_IDN)
467 FEATURE("IDN", idn_present, CURL_VERSION_IDN),
468 #endif
469 #ifdef ENABLE_IPV6
470 FEATURE("IPv6", NULL, CURL_VERSION_IPV6),
471 #endif
472 #ifdef USE_KERBEROS5
473 FEATURE("Kerberos", NULL, CURL_VERSION_KERBEROS5),
474 #endif
475 #if (SIZEOF_CURL_OFF_T > 4) && \
476 ( (SIZEOF_OFF_T > 4) || defined(USE_WIN32_LARGE_FILES) )
477 FEATURE("Largefile", NULL, CURL_VERSION_LARGEFILE),
478 #endif
479 #ifdef HAVE_LIBZ
480 FEATURE("libz", NULL, CURL_VERSION_LIBZ),
481 #endif
482 #ifdef CURL_WITH_MULTI_SSL
483 FEATURE("MultiSSL", NULL, CURL_VERSION_MULTI_SSL),
484 #endif
485 #ifdef USE_NTLM
486 FEATURE("NTLM", NULL, CURL_VERSION_NTLM),
487 #endif
488 #if !defined(CURL_DISABLE_HTTP) && defined(USE_NTLM) && \
489 defined(NTLM_WB_ENABLED)
490 FEATURE("NTLM_WB", NULL, CURL_VERSION_NTLM_WB),
491 #endif
492 #if defined(USE_LIBPSL)
493 FEATURE("PSL", NULL, CURL_VERSION_PSL),
494 #endif
495 #ifdef USE_SPNEGO
496 FEATURE("SPNEGO", NULL, CURL_VERSION_SPNEGO),
497 #endif
498 #ifdef USE_SSL
499 FEATURE("SSL", NULL, CURL_VERSION_SSL),
500 #endif
501 #ifdef USE_WINDOWS_SSPI
502 FEATURE("SSPI", NULL, CURL_VERSION_SSPI),
503 #endif
504 #ifdef GLOBAL_INIT_IS_THREADSAFE
505 FEATURE("threadsafe", NULL, CURL_VERSION_THREADSAFE),
506 #endif
507 #ifdef USE_TLS_SRP
508 FEATURE("TLS-SRP", NULL, CURL_VERSION_TLSAUTH_SRP),
509 #endif
510 #ifdef CURLDEBUG
511 FEATURE("TrackMemory", NULL, CURL_VERSION_CURLDEBUG),
512 #endif
513 #if defined(WIN32) && defined(UNICODE) && defined(_UNICODE)
514 FEATURE("Unicode", NULL, CURL_VERSION_UNICODE),
515 #endif
516 #ifdef USE_UNIX_SOCKETS
517 FEATURE("UnixSockets", NULL, CURL_VERSION_UNIX_SOCKETS),
518 #endif
519 #ifdef HAVE_ZSTD
520 FEATURE("zstd", NULL, CURL_VERSION_ZSTD),
521 #endif
522 {NULL, NULL, 0}
523 };
524
525 static const char *feature_names[sizeof(features_table) /
526 sizeof(features_table[0])] = {NULL};
527
528
529 static curl_version_info_data version_info = {
530 CURLVERSION_NOW,
531 LIBCURL_VERSION,
532 LIBCURL_VERSION_NUM,
533 OS, /* as found by configure or set by hand at build-time */
534 0, /* features bitmask is built at run-time */
535 NULL, /* ssl_version */
536 0, /* ssl_version_num, this is kept at zero */
537 NULL, /* zlib_version */
538 supported_protocols,
539 NULL, /* c-ares version */
540 0, /* c-ares version numerical */
541 NULL, /* libidn version */
542 0, /* iconv version */
543 NULL, /* ssh lib version */
544 0, /* brotli_ver_num */
545 NULL, /* brotli version */
546 0, /* nghttp2 version number */
547 NULL, /* nghttp2 version string */
548 NULL, /* quic library string */
549 #ifdef CURL_CA_BUNDLE
550 CURL_CA_BUNDLE, /* cainfo */
551 #else
552 NULL,
553 #endif
554 #ifdef CURL_CA_PATH
555 CURL_CA_PATH, /* capath */
556 #else
557 NULL,
558 #endif
559 0, /* zstd_ver_num */
560 NULL, /* zstd version */
561 NULL, /* Hyper version */
562 NULL, /* gsasl version */
563 feature_names
564 };
565
curl_version_info(CURLversion stamp)566 curl_version_info_data *curl_version_info(CURLversion stamp)
567 {
568 size_t n;
569 const struct feat *p;
570 int features = 0;
571
572 #if defined(USE_SSH)
573 static char ssh_buffer[80];
574 #endif
575 #ifdef USE_SSL
576 #ifdef CURL_WITH_MULTI_SSL
577 static char ssl_buffer[200];
578 #else
579 static char ssl_buffer[80];
580 #endif
581 #endif
582 #ifdef HAVE_BROTLI
583 static char brotli_buffer[80];
584 #endif
585 #ifdef HAVE_ZSTD
586 static char zstd_buffer[80];
587 #endif
588
589 (void)stamp; /* avoid compiler warnings, we don't use this */
590
591 #ifdef USE_SSL
592 Curl_ssl_version(ssl_buffer, sizeof(ssl_buffer));
593 version_info.ssl_version = ssl_buffer;
594 #endif
595
596 #ifdef HAVE_LIBZ
597 version_info.libz_version = zlibVersion();
598 /* libz left NULL if non-existing */
599 #endif
600 #ifdef USE_ARES
601 {
602 int aresnum;
603 version_info.ares = ares_version(&aresnum);
604 version_info.ares_num = aresnum;
605 }
606 #endif
607 #ifdef USE_LIBIDN2
608 /* This returns a version string if we use the given version or later,
609 otherwise it returns NULL */
610 version_info.libidn = idn2_check_version(IDN2_VERSION);
611 #endif
612
613 #if defined(USE_SSH)
614 Curl_ssh_version(ssh_buffer, sizeof(ssh_buffer));
615 version_info.libssh_version = ssh_buffer;
616 #endif
617
618 #ifdef HAVE_BROTLI
619 version_info.brotli_ver_num = BrotliDecoderVersion();
620 brotli_version(brotli_buffer, sizeof(brotli_buffer));
621 version_info.brotli_version = brotli_buffer;
622 #endif
623
624 #ifdef HAVE_ZSTD
625 version_info.zstd_ver_num = (unsigned int)ZSTD_versionNumber();
626 zstd_version(zstd_buffer, sizeof(zstd_buffer));
627 version_info.zstd_version = zstd_buffer;
628 #endif
629
630 #ifdef USE_NGHTTP2
631 {
632 nghttp2_info *h2 = nghttp2_version(0);
633 version_info.nghttp2_ver_num = h2->version_num;
634 version_info.nghttp2_version = h2->version_str;
635 }
636 #endif
637
638 #ifdef ENABLE_QUIC
639 {
640 static char quicbuffer[80];
641 Curl_quic_ver(quicbuffer, sizeof(quicbuffer));
642 version_info.quic_version = quicbuffer;
643 }
644 #endif
645
646 #ifdef USE_HYPER
647 {
648 static char hyper_buffer[30];
649 msnprintf(hyper_buffer, sizeof(hyper_buffer), "Hyper/%s", hyper_version());
650 version_info.hyper_version = hyper_buffer;
651 }
652 #endif
653
654 #ifdef USE_GSASL
655 {
656 version_info.gsasl_version = gsasl_check_version(NULL);
657 }
658 #endif
659
660 /* Get available features, build bitmask and names array. */
661 n = 0;
662 for(p = features_table; p->name; p++)
663 if(!p->present || p->present(&version_info)) {
664 features |= p->bitmask;
665 feature_names[n++] = p->name;
666 }
667
668 feature_names[n] = NULL; /* Terminate array. */
669 version_info.features = features;
670
671 return &version_info;
672 }
673