forked from curl/trurl
-
Notifications
You must be signed in to change notification settings - Fork 0
/
trurl.c
1358 lines (1259 loc) · 34.7 KB
/
trurl.c
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
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <[email protected]>, 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.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <curl/curl.h>
#include <curl/mprintf.h>
#include <locale.h> /* for setlocale() */
#include "version.h"
#ifdef _MSC_VER
#define strncasecmp _strnicmp
#define strcasecmp _stricmp
#define strdup _strdup
#endif
#if CURL_AT_LEAST_VERSION(7,77,0)
#define SUPPORTS_NORM_IPV4
#endif
#if CURL_AT_LEAST_VERSION(7,81,0)
#define SUPPORTS_ZONEID
#endif
#if CURL_AT_LEAST_VERSION(7,80,0)
#define SUPPORTS_URL_STRERROR
#endif
#if CURL_AT_LEAST_VERSION(7,78,0)
#define SUPPORTS_ALLOW_SPACE
#else
#define CURLU_ALLOW_SPACE 0
#endif
#if CURL_AT_LEAST_VERSION(7,88,0)
#define SUPPORTS_PUNYCODE
#endif
#define OUTPUT_URL 0 /* default */
#define OUTPUT_SCHEME 1
#define OUTPUT_USER 2
#define OUTPUT_PASSWORD 3
#define OUTPUT_OPTIONS 4
#define OUTPUT_HOST 5
#define OUTPUT_PORT 6
#define OUTPUT_PATH 7
#define OUTPUT_QUERY 8
#define OUTPUT_FRAGMENT 9
#define OUTPUT_ZONEID 10
#define NUM_COMPONENTS 11 /* including "url" */
#define PROGNAME "trurl"
#define REPLACE_NULL_BYTE '.' /* for query:key extractions */
enum {
VARMODIFIER_URLENCODED = 1 << 1,
VARMODIFIER_DEFAULT = 1 << 2,
VARMODIFIER_PUNY = 1 << 3,
};
struct var {
const char *name;
CURLUPart part;
};
static const struct var variables[] = {
{"scheme", CURLUPART_SCHEME},
{"user", CURLUPART_USER},
{"password", CURLUPART_PASSWORD},
{"options", CURLUPART_OPTIONS},
{"host", CURLUPART_HOST},
{"port", CURLUPART_PORT},
{"path", CURLUPART_PATH},
{"query", CURLUPART_QUERY},
{"fragment", CURLUPART_FRAGMENT},
{"zoneid", CURLUPART_ZONEID},
{NULL, 0}
};
#define ERROR_PREFIX PROGNAME " error: "
#define WARN_PREFIX PROGNAME " note: "
/* error codes */
#define ERROR_FILE 1
#define ERROR_APPEND 2 /* --append mistake */
#define ERROR_ARG 3 /* a command line option misses its argument */
#define ERROR_FLAG 4 /* a command line flag mistake */
#define ERROR_SET 5 /* a --set problem */
#define ERROR_MEM 6 /* out of memory */
#define ERROR_URL 7 /* could not get a URL out of the set components */
#define ERROR_TRIM 8 /* a --trim problem */
#define ERROR_BADURL 9 /* if --verify is set and the URL cannot parse */
#define ERROR_GET 10 /* bad --get syntax */
#define ERROR_ITER 11 /* bad --iterate syntax */
#ifndef SUPPORTS_URL_STRERROR
/* provide a fake local mockup */
static char *curl_url_strerror(CURLUcode error)
{
static char buffer[128];
curl_msnprintf(buffer, sizeof(buffer), "URL error %u", (int)error);
return buffer;
}
#endif
static void warnf(char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fputs(WARN_PREFIX, stderr);
vfprintf(stderr, fmt, ap);
fputs("\n", stderr);
va_end(ap);
}
static void errorf(int exit_code, char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fputs(ERROR_PREFIX, stderr);
vfprintf(stderr, fmt, ap);
fputs("\n" ERROR_PREFIX "Try " PROGNAME " -h for help\n", stderr);
va_end(ap);
exit(exit_code);
}
#define VERIFY(op, exit_code, ...) \
do { \
if(!op->verify) \
warnf(__VA_ARGS__); \
else { \
/* make sure to terminate the JSON array */ \
if(op->jsonout) \
printf("%s]\n", op->urls ? "\n" : ""); \
errorf(exit_code, __VA_ARGS__); \
} \
} while(0)
static void help(void)
{
int i;
fputs(
"Usage: " PROGNAME " [options] [URL]\n"
" -a, --append [component]=[data] - append data to component\n"
" --accept-space - give in to this URL abuse\n"
" --default-port - add known default ports\n"
" -f, --url-file [file/-] - read URLs from file or stdin\n"
" -g, --get [{component}s] - output component(s)\n"
" -h, --help - this help\n"
" --iterate [component]=[list] - create multiple URL outputs\n"
" --json - output URL as JSON\n"
" --keep-port - keep known default ports\n"
" --no-guess-scheme - require scheme in URLs\n"
" --punycode - encode hostnames in punycode\n"
" --query-separator [letter] - if something else than '&'\n"
" --redirect [URL] - redirect to this\n"
" -s, --set [component]=[data] - set component content\n"
" --sort-query - alpha-sort the query pairs\n"
" --trim [component]=[what] - trim component\n"
" --url [URL] - URL to work with\n"
" --urlencode - URL encode components by default\n"
" -v, --version - show version\n"
" --verify - return error on (first) bad URL\n"
" URL COMPONENTS:\n"
" ", stdout);
for(i = 0; i< NUM_COMPONENTS; i++) {
printf("%s%s", i?", ":"", variables[i].name);
}
fputs("\n", stdout);
exit(0);
}
static void show_version(void)
{
curl_version_info_data *data = curl_version_info(CURLVERSION_NOW);
fprintf(stdout, "%s version %s libcurl/%s [built-with %s]\n",
PROGNAME, TRURL_VERSION_TXT, data->version, LIBCURL_VERSION);
/* puny code isn't guaranteed based on the version, so it must be polled
* from libcurl */
bool supports_puny = false;
#ifdef SUPPORTS_PUNYCODE
const char *const *feature_name = data->feature_names;
while(*feature_name && !supports_puny) {
supports_puny = !strncmp(*feature_name, "IDN", 3);
feature_name++;
}
#endif
fprintf(stdout, "features: %s", supports_puny?"punycode ":"");
#ifdef SUPPORTS_ALLOW_SPACE
fprintf(stdout, "white-space ");
#endif
#ifdef SUPPORTS_ZONEID
fprintf(stdout, "zone-id ");
#endif
#ifdef SUPPORTS_URL_STRERROR
fprintf(stdout, "url-strerror ");
#endif
#ifdef SUPPORTS_NORM_IPV4
fprintf(stdout, "normalize-ipv4");
#endif
fprintf(stdout, "\n");
exit(0);
}
struct iterinfo {
CURLU *uh;
const char *part;
size_t plen;
char *ptr;
unsigned int varmask; /* sets 1 << [component] */
};
struct option {
struct curl_slist *url_list;
struct curl_slist *append_path;
struct curl_slist *append_query;
struct curl_slist *set_list;
struct curl_slist *trim_list;
struct curl_slist *iter_list;
const char *redirect;
const char *qsep;
const char *format;
FILE *url;
bool urlopen;
bool jsonout;
bool verify;
bool accept_space;
bool default_port;
bool keep_port;
bool punycode;
bool sort_query;
bool no_guess_scheme;
bool urlencode;
bool end_of_options;
/* -- stats -- */
unsigned int urls;
};
#define MAX_QPAIRS 1000
char *qpairs[MAX_QPAIRS]; /* encoded */
char *qpairsdec[MAX_QPAIRS]; /* decoded */
int nqpairs; /* how many is stored */
static char *strurldecode(const char *url, int inlength, int *outlength)
{
return curl_easy_unescape(NULL, inlength ? url : "", inlength,
outlength);
}
static void urladd(struct option *o, const char *url)
{
struct curl_slist *n;
n = curl_slist_append(o->url_list, url);
if(n)
o->url_list = n;
}
/* read URLs from this file/stdin */
static void urlfile(struct option *o, const char *file)
{
FILE *f;
if(o->url)
errorf(ERROR_FLAG, "only one --url-file is supported");
if(strcmp("-", file)) {
f = fopen(file, "rt");
if(!f)
errorf(ERROR_FILE, "--url-file %s not found", file);
o->urlopen = true;
}
else
f = stdin;
o->url = f;
}
static void pathadd(struct option *o, const char *path)
{
struct curl_slist *n;
char *urle = curl_easy_escape(NULL, path, 0);
if(urle) {
n = curl_slist_append(o->append_path, urle);
if(n) {
o->append_path = n;
}
curl_free(urle);
}
}
static void queryadd(struct option *o, const char *query)
{
struct curl_slist *n;
char *p = strchr(query, '=');
char *urle;
if(p) {
/* URL encode the left and the right side of the '=' separately */
char *f1 = curl_easy_escape(NULL, query, p - query);
char *f2 = curl_easy_escape(NULL, p + 1, 0);
urle = curl_maprintf("%s=%s", f1, f2);
curl_free(f1);
curl_free(f2);
}
else
urle = curl_easy_escape(NULL, query, 0);
if(urle) {
n = curl_slist_append(o->append_query, urle);
if(n) {
o->append_query = n;
}
curl_free(urle);
}
}
static void appendadd(struct option *o,
const char *arg)
{
if(!strncmp("path=", arg, 5))
pathadd(o, arg + 5);
else if(!strncmp("query=", arg, 6))
queryadd(o, arg + 6);
else
errorf(ERROR_APPEND, "--append unsupported component: %s", arg);
}
static void setadd(struct option *o,
const char *set) /* [component]=[data] */
{
struct curl_slist *n;
n = curl_slist_append(o->set_list, set);
if(n)
o->set_list = n;
}
static void iteradd(struct option *o,
const char *iter) /* [component]=[data] */
{
struct curl_slist *n;
n = curl_slist_append(o->iter_list, iter);
if(n)
o->iter_list = n;
}
static void trimadd(struct option *o,
const char *trim) /* [component]=[data] */
{
struct curl_slist *n;
n = curl_slist_append(o->trim_list, trim);
if(n)
o->trim_list = n;
}
static bool checkoptarg(const char *str,
const char *given,
const char *arg)
{
if(!strcmp(str, given)) {
if(!arg)
errorf(ERROR_ARG, "Missing argument for %s", str);
return true;
}
return false;
}
static int getarg(struct option *op,
const char *flag,
const char *arg,
bool *usedarg)
{
*usedarg = false;
if(!strcmp("--", flag))
op->end_of_options = true;
else if(!strcmp("-v", flag) || !strcmp("--version", flag))
show_version();
else if(!strcmp("-h", flag) || !strcmp("--help", flag))
help();
else if(checkoptarg("--url", flag, arg)) {
urladd(op, arg);
*usedarg = true;
}
else if(checkoptarg("-f", flag, arg) ||
checkoptarg("--url-file", flag, arg)) {
urlfile(op, arg);
*usedarg = true;
}
else if(checkoptarg("-a", flag, arg) ||
checkoptarg("--append", flag, arg)) {
appendadd(op, arg);
*usedarg = true;
}
else if(checkoptarg("-s", flag, arg) ||
checkoptarg("--set", flag, arg)) {
setadd(op, arg);
*usedarg = true;
}
else if(checkoptarg("--iterate", flag, arg)) {
iteradd(op, arg);
*usedarg = true;
}
else if(checkoptarg("--redirect", flag, arg)) {
if(op->redirect)
errorf(ERROR_FLAG, "only one --redirect is supported");
op->redirect = arg;
*usedarg = true;
}
else if(checkoptarg("--query-separator", flag, arg)) {
if(op->qsep)
errorf(ERROR_FLAG, "only one --query-separator is supported");
if(strlen(arg) != 1)
errorf(ERROR_FLAG, "only single-letter query separators are supported");
op->qsep = arg;
*usedarg = true;
}
else if(checkoptarg("--trim", flag, arg)) {
trimadd(op, arg);
*usedarg = true;
}
else if(checkoptarg("-g", flag, arg) ||
checkoptarg("--get", flag, arg)) {
if(op->format)
errorf(ERROR_FLAG, "only one --get is supported");
if(op->jsonout)
errorf(ERROR_FLAG, "--get is mututally exclusive with --json");
op->format = arg;
*usedarg = true;
}
else if(!strcmp("--json", flag)) {
if(op->format)
errorf(ERROR_FLAG, "--json is mututally exclusive with --get");
op->jsonout = true;
}
else if(!strcmp("--verify", flag))
op->verify = true;
else if(!strcmp("--accept-space", flag)) {
#ifdef SUPPORTS_ALLOW_SPACE
op->accept_space = true;
#else
warnf("built with too old libcurl version, --accept-space does not work");
#endif
}
else if(!strcmp("--default-port", flag))
op->default_port = true;
else if(!strcmp("--keep-port", flag))
op->keep_port = true;
else if(!strcmp("--punycode", flag))
op->punycode = true;
else if(!strcmp("--no-guess-scheme", flag))
op->no_guess_scheme = true;
else if(!strcmp("--sort-query", flag))
op->sort_query = true;
else if(!strcmp("--urlencode", flag))
op->urlencode = true;
else
return 1; /* unrecognized option */
return 0;
}
static void showqkey(FILE *stream, const char *key, size_t klen,
bool urldecode, bool showall)
{
int i;
bool shown = false;
char **qp = urldecode ? qpairsdec : qpairs;
for(i = 0; i< nqpairs; i++) {
if(!strncmp(key, qp[i], klen) &&
(qp[i][klen] == '=')) {
if(shown)
fputc(' ', stream);
fputs(&qp[i][klen + 1], stream);
if(!showall)
break;
shown = true;
}
}
}
/* component to variable pointer */
static const struct var *comp2var(const char *name, size_t vlen)
{
int i;
for(i = 0; variables[i].name; i++)
if((strlen(variables[i].name) == vlen) &&
!strncmp(name, variables[i].name, vlen))
return &variables[i];
return NULL;
}
static CURLUcode geturlpart(struct option *o, int modifiers, CURLU *uh,
CURLUPart part, char **out)
{
return curl_url_get(uh, part, out,
(((modifiers & VARMODIFIER_DEFAULT) ||
o->default_port) ?
CURLU_DEFAULT_PORT :
((part != CURLUPART_URL || o->keep_port) ?
0 : CURLU_NO_DEFAULT_PORT))|
#ifdef SUPPORTS_PUNYCODE
(((modifiers & VARMODIFIER_PUNY) || o->punycode) ?
CURLU_PUNYCODE : 0)|
#endif
CURLU_NON_SUPPORT_SCHEME|
(((modifiers & VARMODIFIER_URLENCODED) ||
o->urlencode) ?
0 :CURLU_URLDECODE));
}
static void showurl(FILE *stream, struct option *o, int modifiers,
CURLU *uh)
{
char *url;
CURLUcode rc = geturlpart(o, modifiers, uh, CURLUPART_URL, &url);
if(rc) {
VERIFY(o, ERROR_BADURL, "invalid url [%s]", curl_url_strerror(rc));
return;
}
fputs(url, stream);
curl_free(url);
}
static void get(struct option *op, CURLU *uh)
{
FILE *stream = stdout;
const char *ptr = op->format;
bool done = false;
char startbyte = 0;
char endbyte = 0;
while(ptr && *ptr && !done) {
if(!startbyte && (('{' == *ptr) || ('[' == *ptr))) {
startbyte = *ptr;
if('{' == *ptr)
endbyte = '}';
else
endbyte = ']';
}
if(startbyte == *ptr) {
if(startbyte == ptr[1]) {
/* an escaped {-letter */
fputc(startbyte, stream);
ptr += 2;
}
else {
/* this is meant as a variable to output */
const char *start = ptr;
char *end;
char *cl;
size_t vlen;
bool isquery = false;
bool queryall = false;
int mods = 0;
end = strchr(ptr, endbyte);
ptr++; /* pass the { */
if(!end) {
/* syntax error */
fputc(startbyte, stream);
continue;
}
/* {path} {:path} */
if(*ptr == ':') {
mods |= VARMODIFIER_URLENCODED;
ptr++;
}
vlen = end - ptr;
do {
cl = memchr(ptr, ':', vlen);
if(!cl)
break;
/* modifiers! */
if(!strncmp(ptr, "default:", cl - ptr + 1))
mods |= VARMODIFIER_DEFAULT;
else if(!strncmp(ptr, "puny:", cl - ptr + 1))
mods |= VARMODIFIER_PUNY;
else {
/* {query: or {query-all: */
if(!strncmp(ptr, "query-all:", cl - ptr + 1)) {
isquery = true;
queryall = true;
}
else if(!strncmp(ptr, "query:", cl - ptr + 1))
isquery = true;
else {
/* syntax error */
vlen = 0;
end[1] = '\0';
}
break;
}
ptr = cl + 1;
vlen = end - ptr;
} while(true);
if(isquery) {
showqkey(stream, cl + 1, end - cl - 1,
!op->urlencode && !(mods & VARMODIFIER_URLENCODED),
queryall);
}
else if(!vlen)
errorf(ERROR_GET, "Bad --get syntax: %s", start);
else if(!strncmp(ptr, "url", vlen))
showurl(stream, op, mods, uh);
else {
const struct var *v = comp2var(ptr, vlen);
if(v) {
char *nurl;
CURLUcode rc = geturlpart(op, mods, uh, v->part, &nurl);
switch(rc) {
case CURLUE_OK:
fputs(nurl, stream);
curl_free(nurl);
case CURLUE_NO_SCHEME:
case CURLUE_NO_USER:
case CURLUE_NO_PASSWORD:
case CURLUE_NO_OPTIONS:
case CURLUE_NO_HOST:
case CURLUE_NO_PORT:
case CURLUE_NO_QUERY:
case CURLUE_NO_FRAGMENT:
#ifdef SUPPORTS_ZONEID
case CURLUE_NO_ZONEID:
#endif
/* silently ignore */
break;
default:
warnf("%s (%s)\n", curl_url_strerror(rc), v->name);
break;
}
}
}
ptr = end + 1; /* pass the end */
}
}
else if('\\' == *ptr && ptr[1]) {
switch(ptr[1]) {
case 'r':
fputc('\r', stream);
break;
case 'n':
fputc('\n', stream);
break;
case 't':
fputc('\t', stream);
break;
case '\\':
fputc('\\', stream);
break;
case '{':
fputc('{', stream);
break;
case '[':
fputc('[', stream);
break;
default:
/* unknown, just output this */
fputc(*ptr, stream);
fputc(ptr[1], stream);
break;
}
ptr += 2;
}
else {
fputc(*ptr, stream);
ptr++;
}
}
fputc('\n', stream);
}
static const struct var *setone(CURLU *uh, const char *setline)
{
char *ptr = strchr(setline, '=');
const struct var *v = NULL;
if(ptr && (ptr > setline)) {
size_t vlen = ptr - setline;
bool urlencode = true;
bool found = false;
if(ptr[-1] == ':') {
urlencode = false;
vlen--;
}
v = comp2var(setline, vlen);
if(v) {
CURLUcode rc;
rc = curl_url_set(uh, v->part, ptr[1] ? &ptr[1] : NULL,
CURLU_NON_SUPPORT_SCHEME|
(urlencode ? CURLU_URLENCODE : 0) );
if(rc)
warnf("Error setting %s: %s", v->name, curl_url_strerror(rc));
found = true;
}
if(!found)
errorf(ERROR_SET, "unknown component: %.*s", (int)vlen, setline);
}
else
errorf(ERROR_SET, "invalid --set syntax: %s", setline);
return v;
}
static unsigned int set(CURLU *uh,
struct option *o)
{
struct curl_slist *node;
unsigned int mask = 0;
for(node = o->set_list; node; node = node->next) {
const struct var *v;
char *setline = node->data;
v = setone(uh, setline);
if(v) {
if(mask & (1 << v->part))
errorf(ERROR_SET, "duplicate --set for component %s", v->name);
mask |= (1 << v->part);
}
}
return mask; /* the set components */
}
static void jsonString(FILE *stream, const char *in, size_t len,
bool lowercase)
{
const unsigned char *i = (unsigned char *)in;
const char *in_end = &in[len];
fputc('\"', stream);
for(; i < (unsigned char *)in_end; i++) {
switch(*i) {
case '\\':
fputs("\\\\", stream);
break;
case '\"':
fputs("\\\"", stream);
break;
case '\b':
fputs("\\b", stream);
break;
case '\f':
fputs("\\f", stream);
break;
case '\n':
fputs("\\n", stream);
break;
case '\r':
fputs("\\r", stream);
break;
case '\t':
fputs("\\t", stream);
break;
default:
if(*i < 32)
fprintf(stream, "u%04x", *i);
else {
char out = *i;
if(lowercase && (out >= 'A' && out <= 'Z'))
/* do not use tolower() since that's locale specific */
out |= ('a' - 'A');
fputc(out, stream);
}
break;
}
}
fputc('\"', stream);
}
static void json(struct option *o, CURLU *uh)
{
int i;
bool first = true;
char *url;
CURLUcode rc = geturlpart(o, 0, uh, CURLUPART_URL, &url);
if(rc) {
VERIFY(o, ERROR_BADURL, "invalid url [%s]", curl_url_strerror(rc));
return;
}
printf("%s\n {\n \"url\": ", o->urls ? "," : "");
jsonString(stdout, url, strlen(url), false);
curl_free(url);
fputs(",\n \"parts\": {\n", stdout);
for(i = 0; variables[i].name; i++) {
char *part;
rc = geturlpart(o, 0, uh, variables[i].part, &part);
if(!rc) {
if(!first)
fputs(",\n", stdout);
first = false;
printf(" \"%s\": ", variables[i].name);
jsonString(stdout, part, strlen(part), false);
curl_free(part);
}
}
fputs("\n }", stdout);
first = true;
if(nqpairs) {
int j;
fputs(",\n \"params\": [\n", stdout);
for(j = 0 ; j < nqpairs; j++) {
const char *sep = strchr(qpairsdec[j], '=');
const char *value = sep ? sep + 1 : "";
/* don't print out empty/trimmed values */
if(!qpairsdec[j][0])
continue;
if(!first)
fputs(",\n", stdout);
first = false;
fputs(" {\n \"key\": ", stdout);
jsonString(stdout, qpairsdec[j],
sep ? (size_t)(sep - qpairsdec[j]) : strlen(qpairsdec[j]),
false);
fputs(",\n \"value\": ", stdout);
jsonString(stdout, value, strlen(value), false);
fputs("\n }", stdout);
}
fputs("\n ]", stdout);
}
fputs("\n }", stdout);
}
/* --trim query="utm_*" */
static void trim(struct option *o)
{
struct curl_slist *node;
for(node = o->trim_list; node; node = node->next) {
char *instr = node->data;
if(strncmp(instr, "query", 5))
/* for now we can only trim query components */
errorf(ERROR_TRIM, "Unsupported trim component: %s", instr);
char *ptr = strchr(instr, '=');
if(ptr && (ptr > instr)) {
/* 'ptr' should be a fixed string or a pattern ending with an
asterisk */
size_t inslen;
bool pattern;
int i;
ptr++; /* pass the = */
inslen = strlen(ptr);
pattern = ptr[inslen - 1] == '*';
if(pattern)
inslen--;
for(i = 0 ; i < nqpairs; i++) {
char *q = qpairs[i];
char *sep = strchr(q, '=');
size_t qlen;
if(sep)
qlen = sep - q;
else
qlen = strlen(q);
if((pattern && (inslen <= qlen) &&
!strncasecmp(q, ptr, inslen)) ||
(!pattern && (inslen == qlen) &&
!strncasecmp(q, ptr, inslen))) {
/* this qpair should be stripped out */
free(qpairs[i]);
free(qpairsdec[i]);
qpairs[i] = strdup(""); /* marked as deleted */
qpairsdec[i] = strdup(""); /* marked as deleted */
}
}
}
}
}
/* memdup the amount and add a trailing zero */
static char *memdupzero(char *source, size_t len)
{
char *p = malloc(len + 1);
if(p) {
memcpy(p, source, len);
p[len] = 0;
return p;
}
return NULL;
}
/* URL decode the pair and return it in an allocated chunk */
static char *memdupdec(char *source, size_t len)
{
char *sep = memchr(source, '=', len);
char *left = NULL;
char *right = NULL;
char *str, *dup;
int leftlen = 0;
int rightlen = 0;
left = strurldecode(source, sep ? (size_t)(sep - source) : len,
&leftlen);
if(sep) {
char *p;
int plen;
right = strurldecode(sep + 1, len - (sep - source) - 1, &rightlen);
/* convert null bytes to periods */
for(plen = rightlen, p = right; plen; plen--, p++) {
if(!*p)
*p = REPLACE_NULL_BYTE;
}
}
str = curl_maprintf("%.*s%s%.*s", leftlen, left,
right ? "=":"",
rightlen, right?right:"");
curl_free(right);
curl_free(left);
dup = strdup(str);
curl_free(str);
return dup;
}
static void freeqpairs(void)
{
int i;
for(i = 0; i<nqpairs; i++) {
free(qpairs[i]);
qpairs[i] = NULL;
free(qpairsdec[i]);
qpairsdec[i] = NULL;
}
nqpairs = 0;
}
/* store the pair both encoded and decoded */
static char *addqpair(char *pair, size_t len)
{
char *p = NULL;
char *pdec = NULL;
if(nqpairs < MAX_QPAIRS) {
p = memdupzero(pair, len);
pdec = memdupdec(pair, len);
if(p && pdec) {
qpairs[nqpairs] = p;
qpairsdec[nqpairs] = pdec;
nqpairs++;
}
}
else
warnf("too many query pairs");
return p;
}
/* convert the query string into an array of name=data pair */
static void extractqpairs(CURLU *uh, struct option *o)
{
char *q = NULL;
memset(qpairs, 0, sizeof(qpairs));
nqpairs = 0;
/* extract the query */
if(!curl_url_get(uh, CURLUPART_QUERY, &q, 0)) {
char *p = q;
char *amp;
while(*p) {
size_t len;
amp = strchr(p, o->qsep[0]);
if(!amp)
len = strlen(p);
else
len = amp - p;
addqpair(p, len);
if(amp)
p = amp + 1;
else
break;
}
}
curl_free(q);
}
static void qpair2query(CURLU *uh, struct option *o)
{
int i;