forked from lwthiker/curl-impersonate
-
-
Notifications
You must be signed in to change notification settings - Fork 46
/
Copy pathcurl-impersonate.patch
3964 lines (3832 loc) · 135 KB
/
curl-impersonate.patch
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a54c2fff9..7d22d4e96 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -619,6 +619,29 @@ if(CURL_ZSTD)
endif()
endif()
+option(USE_ECH "Enable ECH support" OFF)
+if(USE_ECH)
+ if(USE_OPENSSL OR USE_WOLFSSL)
+ # Be sure that the OpenSSL/wolfSSL library actually supports ECH.
+ if(NOT DEFINED HAVE_ECH)
+ if(USE_OPENSSL AND HAVE_BORINGSSL)
+ openssl_check_symbol_exists(SSL_set1_ech_config_list "openssl/ssl.h" HAVE_ECH)
+ elseif(USE_OPENSSL)
+ openssl_check_symbol_exists(SSL_ech_set1_echconfig "openssl/ech.h" HAVE_ECH)
+ elseif(USE_WOLFSSL)
+ openssl_check_symbol_exists(wolfSSL_CTX_GenerateEchConfig "wolfssl/options.h;wolfssl/ssl.h" HAVE_ECH)
+ endif()
+ endif()
+ if(NOT HAVE_ECH)
+ message(FATAL_ERROR "ECH support missing in OpenSSL/BoringSSL/wolfSSL")
+ else()
+ message("ECH enabled.")
+ endif()
+ else()
+ message(FATAL_ERROR "ECH requires ECH-enablded OpenSSL, BoringSSL or wolfSSL")
+ endif()
+endif()
+
# Check symbol in OpenSSL-like TLS backends.
macro(openssl_check_symbol_exists SYMBOL FILES VARIABLE)
cmake_push_check_state()
diff --git a/Makefile.am b/Makefile.am
index c8afcb505..234125083 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -131,13 +131,13 @@ CLEANFILES = $(VC14_LIBVCXPROJ) \
$(VC14_SRCVCXPROJ) $(VC14_10_LIBVCXPROJ) $(VC14_10_SRCVCXPROJ) \
$(VC14_30_LIBVCXPROJ) $(VC14_30_SRCVCXPROJ)
-bin_SCRIPTS = curl-config
+bin_SCRIPTS = curl-impersonate-chrome-config
SUBDIRS = lib src
DIST_SUBDIRS = $(SUBDIRS) tests packages scripts include docs
pkgconfigdir = $(libdir)/pkgconfig
-pkgconfig_DATA = libcurl.pc
+pkgconfig_DATA = libcurl-impersonate-chrome.pc
# List of files required to generate VC IDE .dsp, .vcproj and .vcxproj files
include lib/Makefile.inc
diff --git a/configure.ac b/configure.ac
index d9b396376..cd3b845f4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1422,7 +1422,8 @@ if test X"$OPT_BROTLI" != Xno; then
dnl if given with a prefix, we set -L and -I based on that
if test -n "$PREFIX_BROTLI"; then
- LIB_BROTLI="-lbrotlidec"
+ # curl-impersonate: Use static libbrotli
+ LIB_BROTLI="-lbrotlidec-static -lbrotlicommon-static"
LD_BROTLI=-L${PREFIX_BROTLI}/lib$libsuff
CPP_BROTLI=-I${PREFIX_BROTLI}/include
DIR_BROTLI=${PREFIX_BROTLI}/lib$libsuff
@@ -1432,7 +1433,11 @@ if test X"$OPT_BROTLI" != Xno; then
CPPFLAGS="$CPPFLAGS $CPP_BROTLI"
LIBS="$LIB_BROTLI $LIBS"
- AC_CHECK_LIB(brotlidec, BrotliDecoderDecompress)
+ AC_CHECK_LIB(brotlidec, BrotliDecoderDecompress,
+ # curl-impersonate: Define 'action-if-found' explicitly to prevent
+ # -lbrotlidec from being added to LIBS (already added before)
+ AC_DEFINE(HAVE_LIBBROTLI, 1, [Define to 1 if libbrotli exists])
+ )
AC_CHECK_HEADERS(brotli/decode.h,
curl_brotli_msg="enabled (libbrotlidec)"
@@ -4383,14 +4388,23 @@ if test "x$want_ech" != "xno"; then
ECH_ENABLED=0
ECH_SUPPORT=''
- dnl OpenSSL with a chosen ECH function should be enough
- dnl so more exhaustive checking seems unnecessary for now
+ dnl check for OpenSSL
+ if test "x$OPENSSL_ENABLED" = "x1"; then
+ AC_CHECK_FUNCS(SSL_ech_set1_echconfig,
+ ECH_SUPPORT="ECH support available via OpenSSL with SSL_ech_set1_echconfig"
+ ECH_ENABLED=1)
+ fi
+ dnl check for boringssl equivalent
if test "x$OPENSSL_ENABLED" = "x1"; then
- AC_CHECK_FUNCS(SSL_get_ech_status,
- ECH_SUPPORT="ECH support available (OpenSSL with SSL_get_ech_status)"
+ AC_CHECK_FUNCS(SSL_set1_ech_config_list,
+ ECH_SUPPORT="ECH support available via boringssl with SSL_set1_ech_config_list"
+ ECH_ENABLED=1)
+ fi
+ if test "x$WOLFSSL_ENABLED" = "x1"; then
+ AC_CHECK_FUNCS(wolfSSL_CTX_GenerateEchConfig,
+ ECH_SUPPORT="ECH support available via WolfSSL with wolfSSL_CTX_GenerateEchConfig"
ECH_ENABLED=1)
- dnl add 'elif' chain here for additional implementations
fi
dnl now deal with whatever we found
@@ -4795,8 +4809,8 @@ AC_CONFIG_FILES([Makefile \
tests/http/clients/Makefile \
packages/Makefile \
packages/vms/Makefile \
- curl-config \
- libcurl.pc
+ curl-impersonate-chrome-config:curl-config.in \
+ libcurl-impersonate-chrome.pc:libcurl.pc.in
])
AC_OUTPUT
diff --git a/curl-config.in b/curl-config.in
index 54f92d931..ea5895e9b 100644
--- a/curl-config.in
+++ b/curl-config.in
@@ -163,9 +163,9 @@ while test $# -gt 0; do
CURLLIBDIR=""
fi
if test "X@ENABLE_SHARED@" = "Xno"; then
- echo ${CURLLIBDIR}-lcurl @LIBCURL_LIBS@
+ echo ${CURLLIBDIR}-lcurl-impersonate-chrome @LIBCURL_LIBS@
else
- echo ${CURLLIBDIR}-lcurl
+ echo ${CURLLIBDIR}-lcurl-impersonate-chrome
fi
;;
--ssl-backends)
@@ -174,7 +174,7 @@ while test $# -gt 0; do
--static-libs)
if test "X@ENABLE_STATIC@" != "Xno" ; then
- echo "@libdir@/libcurl.@libext@" @LDFLAGS@ @LIBCURL_LIBS@
+ echo "@libdir@/libcurl-impersonate-chrome.@libext@" @LDFLAGS@ @LIBCURL_LIBS@
else
echo "curl was built with static libraries disabled" >&2
exit 1
diff --git a/export.sh b/export.sh
new file mode 100755
index 000000000..34b44cd2a
--- /dev/null
+++ b/export.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+git df curl-8_5_0 > chrome.patch
+mv chrome.patch ../curl-impersonate/chrome/patches/curl-impersonate.patch
diff --git a/include/curl/curl.h b/include/curl/curl.h
index cc24c0506..9cba4dd14 100644
--- a/include/curl/curl.h
+++ b/include/curl/curl.h
@@ -631,6 +631,7 @@ typedef enum {
CURLE_PROXY, /* 97 - proxy handshake error */
CURLE_SSL_CLIENTCERT, /* 98 - client-side certificate required */
CURLE_UNRECOVERABLE_POLL, /* 99 - poll/select returned fatal error */
+ CURLE_ECH_REQUIRED , /* 100 - ECH tried but failed */
CURL_LAST /* never use! */
} CURLcode;
@@ -2201,6 +2202,77 @@ typedef enum {
/* set a specific client IP for HAProxy PROXY protocol header? */
CURLOPT(CURLOPT_HAPROXY_CLIENT_IP, CURLOPTTYPE_STRINGPOINT, 323),
+ /* curl-impersonate: A list of headers used by the impersonated browser.
+ * If given, merged with CURLOPT_HTTPHEADER. */
+ CURLOPT(CURLOPT_HTTPBASEHEADER, CURLOPTTYPE_SLISTPOINT, 324),
+
+ /* curl-impersonate: A list of TLS signature hash algorithms.
+ * See https://datatracker.ietf.org/doc/html/rfc5246#section-7.4.1.4.1 */
+ CURLOPT(CURLOPT_SSL_SIG_HASH_ALGS, CURLOPTTYPE_STRINGPOINT, 325),
+
+ /* curl-impersonate: Whether to enable ALPS in TLS or not.
+ * See https://datatracker.ietf.org/doc/html/draft-vvv-tls-alps.
+ * Support for ALPS is minimal and is intended only for the TLS client
+ * hello to match. */
+ CURLOPT(CURLOPT_SSL_ENABLE_ALPS, CURLOPTTYPE_LONG, 326),
+
+ /* curl-impersonate: Comma-separated list of certificate compression
+ * algorithms to use. These are published in the client hello.
+ * Supported algorithms are "zlib" and "brotli".
+ * See https://datatracker.ietf.org/doc/html/rfc8879 */
+ CURLOPT(CURLOPT_SSL_CERT_COMPRESSION, CURLOPTTYPE_STRINGPOINT, 327),
+
+ /* Enable/disable TLS session ticket extension (RFC5077) */
+ CURLOPT(CURLOPT_SSL_ENABLE_TICKET, CURLOPTTYPE_LONG, 328),
+
+ /*
+ * curl-impersonate:
+ * Set the order of the HTTP/2 pseudo headers. The value must contain
+ * the letters 'm', 'a', 's', 'p' representing the pseudo-headers
+ * ":method", ":authority", ":scheme", ":path" in the desired order of
+ * appearance in the HTTP/2 HEADERS frame.
+ */
+ CURLOPT(CURLOPT_HTTP2_PSEUDO_HEADERS_ORDER, CURLOPTTYPE_STRINGPOINT, 329),
+
+ /*
+ * curl-impersonate:
+ * HTTP2 settings frame keys and values, format: 1:v;2:v;3:v
+ */
+ CURLOPT(CURLOPT_HTTP2_SETTINGS, CURLOPTTYPE_STRINGPOINT, 330),
+
+ /*
+ * curl-impersonate: Whether to enable Boringssl permute extensions
+ * See https://commondatastorage.googleapis.com/chromium-boringssl-docs/ssl.h.html#SSL_set_permute_extensions.
+ */
+ CURLOPT(CURLOPT_SSL_PERMUTE_EXTENSIONS, CURLOPTTYPE_LONG, 331),
+
+ /*
+ * curl-impersonate:
+ * HTTP2 initial window update
+ */
+ CURLOPT(CURLOPT_HTTP2_WINDOW_UPDATE, CURLOPTTYPE_LONG, 332),
+
+ /* curl-impersonate:
+ * set ECH configuration, XXX, the official one is 324
+ */
+ CURLOPT(CURLOPT_ECH, CURLOPTTYPE_STRINGPOINT, 333),
+
+ /*
+ * curl-impersonate:
+ * Set the initial streams settings for http2.
+ */
+ CURLOPT(CURLOPT_HTTP2_STREAMS, CURLOPTTYPE_STRINGPOINT, 334),
+
+ /* curl-impersonate:
+ * enable tls grease
+ */
+ CURLOPT(CURLOPT_TLS_GREASE, CURLOPTTYPE_LONG, 335),
+
+ /* curl-impersonate:
+ * set tls extension order
+ */
+ CURLOPT(CURLOPT_TLS_EXTENSION_ORDER, CURLOPTTYPE_STRINGPOINT, 336),
+
CURLOPT_LASTENTRY /* the last unused */
} CURLoption;
diff --git a/include/curl/easy.h b/include/curl/easy.h
index 1285101c5..c620065dc 100644
--- a/include/curl/easy.h
+++ b/include/curl/easy.h
@@ -43,6 +43,16 @@ CURL_EXTERN CURLcode curl_easy_setopt(CURL *curl, CURLoption option, ...);
CURL_EXTERN CURLcode curl_easy_perform(CURL *curl);
CURL_EXTERN void curl_easy_cleanup(CURL *curl);
+/*
+ * curl-impersonate: Tell libcurl to impersonate a browser.
+ * This is a wrapper function that calls curl_easy_setopt()
+ * multiple times with all the parameters required. That's also why it was
+ * created as a separate API function and not just as another option to
+ * curl_easy_setopt().
+ */
+CURL_EXTERN CURLcode curl_easy_impersonate(CURL *curl, const char *target,
+ int default_headers);
+
/*
* NAME curl_easy_getinfo()
*
diff --git a/include/curl/typecheck-gcc.h b/include/curl/typecheck-gcc.h
index b880f3dc6..79074e011 100644
--- a/include/curl/typecheck-gcc.h
+++ b/include/curl/typecheck-gcc.h
@@ -275,6 +275,7 @@ CURLWARNING(_curl_easy_getinfo_err_curl_off_t,
(option) == CURLOPT_DNS_LOCAL_IP6 || \
(option) == CURLOPT_DNS_SERVERS || \
(option) == CURLOPT_DOH_URL || \
+ (option) == CURLOPT_ECH || \
(option) == CURLOPT_EGDSOCKET || \
(option) == CURLOPT_FTP_ACCOUNT || \
(option) == CURLOPT_FTP_ALTERNATIVE_TO_USER || \
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 1237c8e99..6b2961018 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -31,7 +31,7 @@ EXTRA_DIST = Makefile.mk config-win32.h config-win32ce.h config-plan9.h \
config-os400.h setup-os400.h $(CMAKE_DIST) setup-win32.h .checksrc \
Makefile.soname
-lib_LTLIBRARIES = libcurl.la
+lib_LTLIBRARIES = libcurl-impersonate-chrome.la
if BUILD_UNITTESTS
noinst_LTLIBRARIES = libcurlu.la
@@ -67,51 +67,51 @@ AM_CFLAGS =
# Makefile.inc provides the CSOURCES and HHEADERS defines
include Makefile.inc
-libcurl_la_SOURCES = $(CSOURCES) $(HHEADERS)
+libcurl_impersonate_chrome_la_SOURCES = $(CSOURCES) $(HHEADERS)
libcurlu_la_SOURCES = $(CSOURCES) $(HHEADERS)
-libcurl_la_CPPFLAGS_EXTRA =
-libcurl_la_LDFLAGS_EXTRA =
-libcurl_la_CFLAGS_EXTRA =
+libcurl_impersonate_chrome_la_CPPFLAGS_EXTRA =
+libcurl_impersonate_chrome_la_LDFLAGS_EXTRA =
+libcurl_impersonate_chrome_la_CFLAGS_EXTRA =
if CURL_LT_SHLIB_USE_VERSION_INFO
-libcurl_la_LDFLAGS_EXTRA += $(VERSIONINFO)
+libcurl_impersonate_chrome_la_LDFLAGS_EXTRA += $(VERSIONINFO)
endif
if CURL_LT_SHLIB_USE_NO_UNDEFINED
-libcurl_la_LDFLAGS_EXTRA += -no-undefined
+libcurl_impersonate_chrome_la_LDFLAGS_EXTRA += -no-undefined
endif
if CURL_LT_SHLIB_USE_MIMPURE_TEXT
-libcurl_la_LDFLAGS_EXTRA += -mimpure-text
+libcurl_impersonate_chrome_la_LDFLAGS_EXTRA += -mimpure-text
endif
if CURL_LT_SHLIB_USE_VERSIONED_SYMBOLS
-libcurl_la_LDFLAGS_EXTRA += -Wl,--version-script=libcurl.vers
+libcurl_impersonate_chrome_la_LDFLAGS_EXTRA += -Wl,--version-script=libcurl.vers
else
# if symbol-hiding is enabled, hide them!
if DOING_CURL_SYMBOL_HIDING
-libcurl_la_LDFLAGS_EXTRA += -export-symbols-regex '^curl_.*'
+libcurl_impersonate_chrome_la_LDFLAGS_EXTRA += -export-symbols-regex '^curl_.*'
endif
endif
if USE_CPPFLAG_CURL_STATICLIB
-libcurl_la_CPPFLAGS_EXTRA += -DCURL_STATICLIB
+libcurl_impersonate_chrome_la_CPPFLAGS_EXTRA += -DCURL_STATICLIB
else
if HAVE_WINDRES
-libcurl_la_SOURCES += $(LIB_RCFILES)
+libcurl_impersonate_chrome_la_SOURCES += $(LIB_RCFILES)
$(LIB_RCFILES): $(top_srcdir)/include/curl/curlver.h
endif
endif
if DOING_CURL_SYMBOL_HIDING
-libcurl_la_CPPFLAGS_EXTRA += -DCURL_HIDDEN_SYMBOLS
-libcurl_la_CFLAGS_EXTRA += $(CFLAG_CURL_SYMBOL_HIDING)
+libcurl_impersonate_chrome_la_CPPFLAGS_EXTRA += -DCURL_HIDDEN_SYMBOLS
+libcurl_impersonate_chrome_la_CFLAGS_EXTRA += $(CFLAG_CURL_SYMBOL_HIDING)
endif
-libcurl_la_CPPFLAGS = $(AM_CPPFLAGS) $(libcurl_la_CPPFLAGS_EXTRA)
-libcurl_la_LDFLAGS = $(AM_LDFLAGS) $(libcurl_la_LDFLAGS_EXTRA) $(CURL_LDFLAGS_LIB) $(LIBCURL_LIBS)
-libcurl_la_CFLAGS = $(AM_CFLAGS) $(libcurl_la_CFLAGS_EXTRA)
+libcurl_impersonate_chrome_la_CPPFLAGS = $(AM_CPPFLAGS) $(libcurl_impersonate_chrome_la_CPPFLAGS_EXTRA)
+libcurl_impersonate_chrome_la_LDFLAGS = $(AM_LDFLAGS) $(libcurl_impersonate_chrome_la_LDFLAGS_EXTRA) $(CURL_LDFLAGS_LIB) $(LIBCURL_LIBS)
+libcurl_impersonate_chrome_la_CFLAGS = $(AM_CFLAGS) $(libcurl_impersonate_chrome_la_CFLAGS_EXTRA)
libcurlu_la_CPPFLAGS = $(AM_CPPFLAGS) -DCURL_STATICLIB -DUNITTESTS
libcurlu_la_LDFLAGS = $(AM_LDFLAGS) -static $(LIBCURL_LIBS)
diff --git a/lib/Makefile.inc b/lib/Makefile.inc
index e568ef953..298b16050 100644
--- a/lib/Makefile.inc
+++ b/lib/Makefile.inc
@@ -171,6 +171,7 @@ LIB_CFILES = \
idn.c \
if2ip.c \
imap.c \
+ impersonate.c \
inet_ntop.c \
inet_pton.c \
krb5.c \
diff --git a/lib/curl_config.h.cmake b/lib/curl_config.h.cmake
index 339358ea3..a9cf400fb 100644
--- a/lib/curl_config.h.cmake
+++ b/lib/curl_config.h.cmake
@@ -811,3 +811,6 @@ ${SIZEOF_TIME_T_CODE}
/* Define to 1 to enable TLS-SRP support. */
#cmakedefine USE_TLS_SRP 1
+
+/* if ECH support is available */
+#cmakedefine USE_ECH 1
diff --git a/lib/dynhds.c b/lib/dynhds.c
index d7548959b..00f97506b 100644
--- a/lib/dynhds.c
+++ b/lib/dynhds.c
@@ -56,6 +56,8 @@ entry_new(const char *name, size_t namelen,
e->valuelen = valuelen;
if(opts & DYNHDS_OPT_LOWERCASE)
Curl_strntolower(e->name, e->name, e->namelen);
+ if(opts & DYNHDS_OPT_LOWERCASE_VAL)
+ Curl_strntolower(e->value, e->value, e->valuelen);
return e;
}
@@ -138,6 +140,16 @@ void Curl_dynhds_set_opts(struct dynhds *dynhds, int opts)
dynhds->opts = opts;
}
+void Curl_dynhds_set_opt(struct dynhds *dynhds, int opt)
+{
+ dynhds->opts |= opt;
+}
+
+void Curl_dynhds_del_opt(struct dynhds *dynhds, int opt)
+{
+ dynhds->opts &= ~opt;
+}
+
struct dynhds_entry *Curl_dynhds_getn(struct dynhds *dynhds, size_t n)
{
DEBUGASSERT(dynhds);
diff --git a/lib/dynhds.h b/lib/dynhds.h
index 3b536000a..d7135698f 100644
--- a/lib/dynhds.h
+++ b/lib/dynhds.h
@@ -53,6 +53,7 @@ struct dynhds {
#define DYNHDS_OPT_NONE (0)
#define DYNHDS_OPT_LOWERCASE (1 << 0)
+#define DYNHDS_OPT_LOWERCASE_VAL (1 << 1)
/**
* Init for use on first time or after a reset.
@@ -82,6 +83,8 @@ size_t Curl_dynhds_count(struct dynhds *dynhds);
* This will not have an effect on already existing headers.
*/
void Curl_dynhds_set_opts(struct dynhds *dynhds, int opts);
+void Curl_dynhds_set_opt(struct dynhds *dynhds, int opt);
+void Curl_dynhds_del_opt(struct dynhds *dynhds, int opt);
/**
* Return the n-th header entry or NULL if it does not exist.
diff --git a/lib/easy.c b/lib/easy.c
index 322d1a41b..805613e6f 100644
--- a/lib/easy.c
+++ b/lib/easy.c
@@ -74,6 +74,8 @@
#include "dynbuf.h"
#include "altsvc.h"
#include "hsts.h"
+#include "strcase.h"
+#include "impersonate.h"
#include "easy_lock.h"
@@ -341,6 +343,203 @@ CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
return rc;
}
+
+/*
+ * curl-impersonate:
+ * Actually call curl_easy_setopt() with all the needed options
+ * */
+CURLcode _do_impersonate(struct Curl_easy *data,
+ const struct impersonate_opts *opts,
+ int default_headers)
+{
+ int i;
+ int ret;
+ struct curl_slist *headers = NULL;
+
+ if(opts->target == NULL) {
+ DEBUGF(fprintf(stderr, "Error: unknown impersonation target '%s'\n",
+ target));
+ return CURLE_BAD_FUNCTION_ARGUMENT;
+ }
+
+ if(opts->httpversion != CURL_HTTP_VERSION_NONE) {
+ ret = curl_easy_setopt(data, CURLOPT_HTTP_VERSION, opts->httpversion);
+ if(ret)
+ return ret;
+ }
+
+ if (opts->ssl_version != CURL_SSLVERSION_DEFAULT) {
+ ret = curl_easy_setopt(data, CURLOPT_SSLVERSION, opts->ssl_version);
+ if(ret)
+ return ret;
+ }
+
+ if(opts->ciphers) {
+ ret = curl_easy_setopt(data, CURLOPT_SSL_CIPHER_LIST, opts->ciphers);
+ if (ret)
+ return ret;
+ }
+
+ if(opts->curves) {
+ ret = curl_easy_setopt(data, CURLOPT_SSL_EC_CURVES, opts->curves);
+ if(ret)
+ return ret;
+ }
+
+ if(opts->sig_hash_algs) {
+ ret = curl_easy_setopt(data, CURLOPT_SSL_SIG_HASH_ALGS,
+ opts->sig_hash_algs);
+ if(ret)
+ return ret;
+ }
+
+ ret = curl_easy_setopt(data, CURLOPT_SSL_ENABLE_NPN, opts->npn ? 1 : 0);
+ if(ret)
+ return ret;
+
+ ret = curl_easy_setopt(data, CURLOPT_SSL_ENABLE_ALPN, opts->alpn ? 1 : 0);
+ if(ret)
+ return ret;
+
+ ret = curl_easy_setopt(data, CURLOPT_SSL_ENABLE_ALPS, opts->alps ? 1 : 0);
+ if(ret)
+ return ret;
+
+ ret = curl_easy_setopt(data, CURLOPT_SSL_ENABLE_TICKET,
+ opts->tls_session_ticket ? 1 : 0);
+ if(ret)
+ return ret;
+
+ if(opts->tls_permute_extensions) {
+ ret = curl_easy_setopt(data, CURLOPT_SSL_PERMUTE_EXTENSIONS, 1);
+ if(ret)
+ return ret;
+ }
+
+ if(opts->cert_compression) {
+ ret = curl_easy_setopt(data,
+ CURLOPT_SSL_CERT_COMPRESSION,
+ opts->cert_compression);
+ if(ret)
+ return ret;
+ }
+
+ if(default_headers) {
+ /* Build a linked list out of the static array of headers. */
+ for(i = 0; i < IMPERSONATE_MAX_HEADERS; i++) {
+ if(opts->http_headers[i]) {
+ headers = curl_slist_append(headers, opts->http_headers[i]);
+ if(!headers) {
+ return CURLE_OUT_OF_MEMORY;
+ }
+ }
+ }
+
+ if(headers) {
+ ret = curl_easy_setopt(data, CURLOPT_HTTPBASEHEADER, headers);
+ curl_slist_free_all(headers);
+ if(ret)
+ return ret;
+ }
+ }
+
+ if(opts->http2_pseudo_headers_order) {
+ ret = curl_easy_setopt(data,
+ CURLOPT_HTTP2_PSEUDO_HEADERS_ORDER,
+ opts->http2_pseudo_headers_order);
+ if(ret)
+ return ret;
+ }
+
+ if(opts->http2_settings) {
+ ret = curl_easy_setopt(data, CURLOPT_HTTP2_SETTINGS, opts->http2_settings);
+ if(ret)
+ return ret;
+ }
+
+ if(opts->http2_window_update) {
+ ret = curl_easy_setopt(data, CURLOPT_HTTP2_WINDOW_UPDATE, opts->http2_window_update);
+ if(ret)
+ return ret;
+ }
+
+ if(opts->http2_streams) {
+ ret = curl_easy_setopt(data, CURLOPT_HTTP2_STREAMS, opts->http2_streams);
+ if(ret)
+ return ret;
+ }
+
+ if(opts->ech) {
+ ret = curl_easy_setopt(data, CURLOPT_ECH, opts->ech);
+ if(ret)
+ return ret;
+ }
+
+ if(opts->tls_grease) {
+ ret = curl_easy_setopt(data, CURLOPT_TLS_GREASE, opts->tls_grease);
+ }
+
+ if(opts->tls_extension_order) {
+ // printf("setting extension order as: %s\n", opts->tls_extension_order);
+ ret = curl_easy_setopt(data, CURLOPT_TLS_EXTENSION_ORDER, opts->tls_extension_order);
+ }
+
+ /* Always enable all supported compressions. */
+ ret = curl_easy_setopt(data, CURLOPT_ACCEPT_ENCODING, "");
+ if(ret)
+ return ret;
+
+ return CURLE_OK;
+}
+
+
+/*
+ * curl-impersonate:
+ * Call curl_easy_setopt() with all the needed options as defined by the target
+ * */
+CURLcode curl_easy_impersonate_customized(struct Curl_easy *data,
+ const struct impersonate_opts *opts,
+ int default_headers)
+{
+ int ret;
+
+ ret = _do_impersonate(data, opts, default_headers);
+ if(ret)
+ return ret;
+
+ return CURLE_OK;
+}
+
+/*
+ * curl-impersonate:
+ * Call curl_easy_setopt() with all the needed options as defined in the
+ * 'impersonations' array.
+ * */
+CURLcode curl_easy_impersonate(struct Curl_easy *data, const char *target,
+ int default_headers)
+{
+ int ret;
+ const struct impersonate_opts *opts = NULL;
+
+ for(opts = impersonations; opts->target != NULL; opts++) {
+ if (strcasecompare(target, opts->target)) {
+ break;
+ }
+ }
+
+ if(opts->target == NULL) {
+ DEBUGF(fprintf(stderr, "Error: unknown impersonation target '%s'\n",
+ target));
+ return CURLE_BAD_FUNCTION_ARGUMENT;
+ }
+
+ ret = _do_impersonate(data, opts, default_headers);
+ if(ret)
+ return ret;
+
+ return CURLE_OK;
+}
+
/*
* curl_easy_init() is the external interface to alloc, setup and init an
* easy handle that is returned. If anything goes wrong, NULL is returned.
@@ -349,6 +548,8 @@ struct Curl_easy *curl_easy_init(void)
{
CURLcode result;
struct Curl_easy *data;
+ char *env_target;
+ char *env_headers;
/* Make sure we inited the global SSL stuff */
global_init_lock();
@@ -371,6 +572,29 @@ struct Curl_easy *curl_easy_init(void)
return NULL;
}
+ /*
+ * curl-impersonate: Hook into curl_easy_init() to set the required options
+ * from an environment variable.
+ * This is a bit hacky but allows seamless integration of libcurl-impersonate
+ * without code modifications to the app.
+ */
+ env_target = curl_getenv("CURL_IMPERSONATE");
+ if(env_target) {
+ env_headers = curl_getenv("CURL_IMPERSONATE_HEADERS");
+ if(env_headers) {
+ result = curl_easy_impersonate(data, env_target,
+ !strcasecompare(env_headers, "no"));
+ free(env_headers);
+ } else {
+ result = curl_easy_impersonate(data, env_target, true);
+ }
+ free(env_target);
+ if(result) {
+ Curl_close(&data);
+ return NULL;
+ }
+ }
+
return data;
}
@@ -945,6 +1169,13 @@ struct Curl_easy *curl_easy_duphandle(struct Curl_easy *data)
outcurl->state.referer_alloc = TRUE;
}
+ if(data->state.base_headers) {
+ outcurl->state.base_headers =
+ Curl_slist_duplicate(data->state.base_headers);
+ if(!outcurl->state.base_headers)
+ goto fail;
+ }
+
/* Reinitialize an SSL engine for the new handle
* note: the engine name has already been copied by dupset */
if(outcurl->set.str[STRING_SSL_ENGINE]) {
@@ -1004,6 +1235,9 @@ fail:
*/
void curl_easy_reset(struct Curl_easy *data)
{
+ char *env_target;
+ char *env_headers;
+
Curl_free_request_state(data);
/* zero out UserDefined data: */
@@ -1028,6 +1262,23 @@ void curl_easy_reset(struct Curl_easy *data)
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_DIGEST_AUTH)
Curl_http_auth_cleanup_digest(data);
#endif
+
+ /*
+ * curl-impersonate: Hook into curl_easy_reset() to set the required options
+ * from an environment variable, just like in curl_easy_init().
+ */
+ env_target = curl_getenv("CURL_IMPERSONATE");
+ if(env_target) {
+ env_headers = curl_getenv("CURL_IMPERSONATE_HEADERS");
+ if(env_headers) {
+ curl_easy_impersonate(data, env_target,
+ !strcasecompare(env_headers, "no"));
+ free(env_headers);
+ } else {
+ curl_easy_impersonate(data, env_target, true);
+ }
+ free(env_target);
+ }
}
/*
diff --git a/lib/easyoptions.c b/lib/easyoptions.c
index e69c658b0..027dd6f93 100644
--- a/lib/easyoptions.c
+++ b/lib/easyoptions.c
@@ -86,6 +86,7 @@ struct curl_easyoption Curl_easyopts[] = {
{"DOH_SSL_VERIFYPEER", CURLOPT_DOH_SSL_VERIFYPEER, CURLOT_LONG, 0},
{"DOH_SSL_VERIFYSTATUS", CURLOPT_DOH_SSL_VERIFYSTATUS, CURLOT_LONG, 0},
{"DOH_URL", CURLOPT_DOH_URL, CURLOT_STRING, 0},
+ {"ECH", CURLOPT_ECH, CURLOT_STRING, 0},
{"EGDSOCKET", CURLOPT_EGDSOCKET, CURLOT_STRING, 0},
{"ENCODING", CURLOPT_ACCEPT_ENCODING, CURLOT_STRING, CURLOT_FLAG_ALIAS},
{"ERRORBUFFER", CURLOPT_ERRORBUFFER, CURLOT_OBJECT, 0},
@@ -133,8 +134,14 @@ struct curl_easyoption Curl_easyopts[] = {
{"HSTS_CTRL", CURLOPT_HSTS_CTRL, CURLOT_LONG, 0},
{"HTTP09_ALLOWED", CURLOPT_HTTP09_ALLOWED, CURLOT_LONG, 0},
{"HTTP200ALIASES", CURLOPT_HTTP200ALIASES, CURLOT_SLIST, 0},
+ {"HTTP2_PSEUDO_HEADERS_ORDER", CURLOPT_HTTP2_PSEUDO_HEADERS_ORDER,
+ CURLOT_STRING, 0},
+ {"HTTP2_SETTINGS", CURLOPT_HTTP2_SETTINGS, CURLOT_STRING, 0},
+ {"HTTP2_WINDOW_UPDATE", CURLOPT_HTTP2_WINDOW_UPDATE, CURLOT_LONG, 0},
+ {"HTTP2_STREAMS", CURLOPT_HTTP2_STREAMS, CURLOT_STRING, 0},
{"HTTPAUTH", CURLOPT_HTTPAUTH, CURLOT_VALUES, 0},
{"HTTPGET", CURLOPT_HTTPGET, CURLOT_LONG, 0},
+ {"HTTPBASEHEADER", CURLOPT_HTTPBASEHEADER, CURLOT_SLIST, 0},
{"HTTPHEADER", CURLOPT_HTTPHEADER, CURLOT_SLIST, 0},
{"HTTPPOST", CURLOPT_HTTPPOST, CURLOT_OBJECT, 0},
{"HTTPPROXYTUNNEL", CURLOPT_HTTPPROXYTUNNEL, CURLOT_LONG, 0},
@@ -305,18 +312,23 @@ struct curl_easyoption Curl_easyopts[] = {
{"SSLKEYTYPE", CURLOPT_SSLKEYTYPE, CURLOT_STRING, 0},
{"SSLKEY_BLOB", CURLOPT_SSLKEY_BLOB, CURLOT_BLOB, 0},
{"SSLVERSION", CURLOPT_SSLVERSION, CURLOT_VALUES, 0},
+ {"SSL_CERT_COMPRESSION", CURLOPT_SSL_CERT_COMPRESSION, CURLOT_STRING, 0},
{"SSL_CIPHER_LIST", CURLOPT_SSL_CIPHER_LIST, CURLOT_STRING, 0},
{"SSL_CTX_DATA", CURLOPT_SSL_CTX_DATA, CURLOT_CBPTR, 0},
{"SSL_CTX_FUNCTION", CURLOPT_SSL_CTX_FUNCTION, CURLOT_FUNCTION, 0},
{"SSL_EC_CURVES", CURLOPT_SSL_EC_CURVES, CURLOT_STRING, 0},
{"SSL_ENABLE_ALPN", CURLOPT_SSL_ENABLE_ALPN, CURLOT_LONG, 0},
+ {"SSL_ENABLE_ALPS", CURLOPT_SSL_ENABLE_ALPS, CURLOT_LONG, 0},
{"SSL_ENABLE_NPN", CURLOPT_SSL_ENABLE_NPN, CURLOT_LONG, 0},
+ {"SSL_ENABLE_TICKET", CURLOPT_SSL_ENABLE_TICKET, CURLOT_LONG, 0},
{"SSL_FALSESTART", CURLOPT_SSL_FALSESTART, CURLOT_LONG, 0},
{"SSL_OPTIONS", CURLOPT_SSL_OPTIONS, CURLOT_VALUES, 0},
{"SSL_SESSIONID_CACHE", CURLOPT_SSL_SESSIONID_CACHE, CURLOT_LONG, 0},
+ {"SSL_SIG_HASH_ALGS", CURLOPT_SSL_SIG_HASH_ALGS, CURLOT_STRING, 0},
{"SSL_VERIFYHOST", CURLOPT_SSL_VERIFYHOST, CURLOT_LONG, 0},
{"SSL_VERIFYPEER", CURLOPT_SSL_VERIFYPEER, CURLOT_LONG, 0},
{"SSL_VERIFYSTATUS", CURLOPT_SSL_VERIFYSTATUS, CURLOT_LONG, 0},
+ {"SSL_PERMUTE_EXTENSIONS", CURLOPT_SSL_PERMUTE_EXTENSIONS, CURLOT_LONG, 0},
{"STDERR", CURLOPT_STDERR, CURLOT_OBJECT, 0},
{"STREAM_DEPENDS", CURLOPT_STREAM_DEPENDS, CURLOT_OBJECT, 0},
{"STREAM_DEPENDS_E", CURLOPT_STREAM_DEPENDS_E, CURLOT_OBJECT, 0},
@@ -340,6 +352,8 @@ struct curl_easyoption Curl_easyopts[] = {
{"TLSAUTH_PASSWORD", CURLOPT_TLSAUTH_PASSWORD, CURLOT_STRING, 0},
{"TLSAUTH_TYPE", CURLOPT_TLSAUTH_TYPE, CURLOT_STRING, 0},
{"TLSAUTH_USERNAME", CURLOPT_TLSAUTH_USERNAME, CURLOT_STRING, 0},
+ {"TLS_GREASE", CURLOPT_TLS_GREASE, CURLOT_LONG, 0},
+ {"TLS_EXTENSION_ORDER", CURLOPT_TLS_EXTENSION_ORDER, CURLOT_STRING, 0},
{"TRAILERDATA", CURLOPT_TRAILERDATA, CURLOT_CBPTR, 0},
{"TRAILERFUNCTION", CURLOPT_TRAILERFUNCTION, CURLOT_FUNCTION, 0},
{"TRANSFERTEXT", CURLOPT_TRANSFERTEXT, CURLOT_LONG, 0},
@@ -373,6 +387,6 @@ struct curl_easyoption Curl_easyopts[] = {
*/
int Curl_easyopts_check(void)
{
- return ((CURLOPT_LASTENTRY%10000) != (323 + 1));
+ return ((CURLOPT_LASTENTRY%10000) != (334 + 1));
}
#endif
diff --git a/lib/http.c b/lib/http.c
index be6d442e8..ca537314a 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -90,6 +90,7 @@
#include "ws.h"
#include "c-hyper.h"
#include "curl_ctype.h"
+#include "slist.h"
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
@@ -1937,6 +1938,15 @@ CURLcode Curl_add_custom_headers(struct Curl_easy *data,
int numlists = 1; /* by default */
int i;
+ /*
+ * curl-impersonate: Use the merged list of headers if it exists (i.e. when
+ * the CURLOPT_HTTPBASEHEADER option was set.
+ */
+ struct curl_slist *noproxyheaders =
+ (data->state.merged_headers ?
+ data->state.merged_headers :
+ data->set.headers);
+
#ifndef CURL_DISABLE_PROXY
enum proxy_use proxy;
@@ -1948,10 +1958,10 @@ CURLcode Curl_add_custom_headers(struct Curl_easy *data,
switch(proxy) {
case HEADER_SERVER:
- h[0] = data->set.headers;
+ h[0] = noproxyheaders;
break;
case HEADER_PROXY:
- h[0] = data->set.headers;
+ h[0] = noproxyheaders;
if(data->set.sep_headers) {
h[1] = data->set.proxyheaders;
numlists++;
@@ -1961,12 +1971,12 @@ CURLcode Curl_add_custom_headers(struct Curl_easy *data,
if(data->set.sep_headers)
h[0] = data->set.proxyheaders;
else
- h[0] = data->set.headers;
+ h[0] = noproxyheaders;
break;
}
#else
(void)is_connect;
- h[0] = data->set.headers;
+ h[0] = noproxyheaders;
#endif
/* loop through one or two lists */
@@ -2202,6 +2212,108 @@ void Curl_http_method(struct Curl_easy *data, struct connectdata *conn,
*reqp = httpreq;
}
+/*
+ * curl-impersonate:
+ * Create a new linked list of headers.
+ * The new list is a merge between the "base" headers and the application given
+ * headers. The "base" headers contain curl-impersonate's list of headers
+ * used by default by the impersonated browser.
+ *
+ * The application given headers will override the "base" headers if supplied.
+ */
+CURLcode Curl_http_merge_headers(struct Curl_easy *data)
+{
+ int i;
+ int ret;
+ struct curl_slist *head;
+ struct curl_slist *dup = NULL;
+ struct curl_slist *new_list = NULL;
+ char *uagent;
+
+ if (!data->state.base_headers)
+ return CURLE_OK;
+
+ /* Duplicate the list for temporary use. */
+ if (data->set.headers) {
+ dup = Curl_slist_duplicate(data->set.headers);
+ if(!dup)
+ return CURLE_OUT_OF_MEMORY;
+ }
+
+ for(head = data->state.base_headers; head; head = head->next) {
+ char *sep;
+ size_t prefix_len;
+ bool found = FALSE;
+ struct curl_slist *head2;
+
+ sep = strchr(head->data, ':');
+ if(!sep)
+ continue;
+
+ prefix_len = sep - head->data;
+
+ /* Check if this header was added by the application. */
+ for(head2 = dup; head2; head2 = head2->next) {
+ if(head2->data &&
+ strncasecompare(head2->data, head->data, prefix_len) &&
+ Curl_headersep(head2->data[prefix_len]) ) {
+ new_list = curl_slist_append(new_list, head2->data);
+ /* Free and set to NULL to mark that it's been added. */
+ Curl_safefree(head2->data);
+ found = TRUE;
+ break;
+ }
+ }
+
+ /* If the user agent was set with CURLOPT_USERAGENT, but not with
+ * CURLOPT_HTTPHEADER, take it from there instead. */
+ if(!found &&
+ strncasecompare(head->data, "User-Agent", prefix_len) &&
+ data->set.str[STRING_USERAGENT] &&
+ *data->set.str[STRING_USERAGENT]) {
+ uagent = aprintf("User-Agent: %s", data->set.str[STRING_USERAGENT]);
+ if(!uagent) {
+ ret = CURLE_OUT_OF_MEMORY;
+ goto fail;
+ }
+ new_list = Curl_slist_append_nodup(new_list, uagent);
+ found = TRUE;
+ }
+
+ if (!found) {
+ new_list = curl_slist_append(new_list, head->data);
+ }
+
+ if (!new_list) {
+ ret = CURLE_OUT_OF_MEMORY;
+ goto fail;
+ }
+ }
+
+ /* Now go over any additional application-supplied headers. */
+ for(head = dup; head; head = head->next) {
+ if(head->data) {
+ new_list = curl_slist_append(new_list, head->data);
+ if(!new_list) {
+ ret = CURLE_OUT_OF_MEMORY;
+ goto fail;
+ }
+ }
+ }
+
+ curl_slist_free_all(dup);
+ /* Save the new, merged list separately, so it can be freed later. */
+ curl_slist_free_all(data->state.merged_headers);
+ data->state.merged_headers = new_list;
+
+ return CURLE_OK;
+
+fail:
+ Curl_safefree(dup);
+ curl_slist_free_all(new_list);
+ return ret;
+}
+
CURLcode Curl_http_useragent(struct Curl_easy *data)
{
/* The User-Agent string might have been allocated in url.c already, because
@@ -3210,6 +3322,11 @@ CURLcode Curl_http(struct Curl_easy *data, bool *done)
http = data->req.p.http;
DEBUGASSERT(http);
+ /* curl-impersonate: Add HTTP headers to impersonate real browsers. */
+ result = Curl_http_merge_headers(data);
+ if (result)
+ return result;
+
result = Curl_http_host(data, conn);
if(result)
return result;
@@ -4847,12 +4964,41 @@ static bool h2_non_field(const char *name, size_t namelen)
return FALSE;
}
+/*
+ * curl-impersonate:
+ * Determine the position of HTTP/2 pseudo headers.
+ * The pseudo headers ":method", ":path", ":scheme", ":authority"
+ * are sent in different order by different browsers. An important part of the
+ * impersonation is ordering them like the browser does.
+ */
+static CURLcode h2_check_pseudo_header_order(const char *order)
+{
+ if(strlen(order) != 4)
+ return CURLE_BAD_FUNCTION_ARGUMENT;
+
+ // :method should always be first