forked from allinurl/goaccess
-
Notifications
You must be signed in to change notification settings - Fork 0
/
parser.c
2415 lines (2074 loc) · 64.3 KB
/
parser.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
/**
* parser.c -- web log parsing
* ______ ___
* / ____/___ / | _____________ __________
* / / __/ __ \/ /| |/ ___/ ___/ _ \/ ___/ ___/
* / /_/ / /_/ / ___ / /__/ /__/ __(__ |__ )
* \____/\____/_/ |_\___/\___/\___/____/____/
*
* The MIT License (MIT)
* Copyright (c) 2009-2024 Gerardo Orellana <hello @ goaccess.io>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* "_XOPEN_SOURCE" is required for the GNU libc to export "strptime(3)"
* correctly.
*/
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#define _FILE_OFFSET_BITS 64
#define _XOPEN_SOURCE 700
#define _DEFAULT_SOURCE
#include <ctype.h>
#include <errno.h>
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <inttypes.h>
#include <pthread.h>
#include <libgen.h>
#include "gkhash.h"
#include "parser.h"
#include "browsers.h"
#include "error.h"
#include "goaccess.h"
#include "gstorage.h"
#include "util.h"
#include "websocket.h"
#include "xmalloc.h"
/* Allocate memory for a new GRawData instance.
*
* On success, the newly allocated GRawData is returned . */
GRawData *
new_grawdata (void) {
GRawData *raw_data = xmalloc (sizeof (*raw_data));
memset (raw_data, 0, sizeof *raw_data);
return raw_data;
}
/* Allocate memory for a new GRawDataItem instance.
*
* On success, the newly allocated GRawDataItem is returned . */
GRawDataItem *
new_grawdata_item (unsigned int size) {
GRawDataItem *item = xcalloc (size, sizeof (*item));
return item;
}
/* Free memory allocated for a GRawData and GRawDataItem instance. */
void
free_raw_data (GRawData *raw_data) {
free (raw_data->items);
free (raw_data);
}
/* Reset an instance of GLog structure. */
void
reset_struct (Logs *logs) {
int i = 0;
for (i = 0; i < logs->size; ++i)
logs->glog[i].invalid = logs->glog[i].processed = 0;
}
/* Allocate memory for a new Logs and GLog instance.
*
* On success, the newly allocated Logs is returned . */
Logs *
new_logs (int size) {
Logs *logs = xmalloc (sizeof (*logs));
memset (logs, 0, sizeof *logs);
logs->glog = xcalloc (size, sizeof (GLog));
logs->size = size;
logs->idx = 0;
return logs;
}
/* Allocate, initialize and add the given filename to our logs structure.
*
* On error, 1 is returned.
* On success, the given filename is added to the Logs structure and 0 is
* returned. */
int
set_glog (Logs *logs, const char *filename) {
GLog *tmp = NULL, *glog = NULL;
int newlen = 0;
char const *err;
char *fvh = NULL, *fn = NULL;
if (logs->size - 1 < logs->idx) {
newlen = logs->size + 1;
if (!(tmp = xrealloc (logs->glog, newlen * sizeof (GLog))))
return ERR_LOG_REALLOC_FAILURE;
logs->glog = tmp;
memset (logs->glog + logs->idx, 0, (logs->idx + 1 - logs->size) * sizeof *logs->glog);
logs->size = newlen;
}
fn = xstrdup (filename); /* ensure fn is a string */
glog = logs->glog;
glog[logs->idx].errors = xcalloc (MAX_LOG_ERRORS, sizeof (char *));
glog[logs->idx].props.filename = xstrdup (fn);
glog[logs->idx].props.fname = xstrdup (basename (fn));
if (!glog->pipe && conf.fname_as_vhost) {
if (!(fvh = regex_extract_string (glog[logs->idx].props.fname, conf.fname_as_vhost, 1, &err)))
FATAL ("%s %s[%s]", err, glog[logs->idx].props.fname, conf.fname_as_vhost);
glog[logs->idx].fname_as_vhost = fvh;
}
logs->processed = &(glog[logs->idx].processed);
logs->filename = glog[logs->idx].props.filename;
logs->idx++;
free (fn);
return 0;
}
/* Ensure the given filename is part of our original list of files.
*
* On error, 1 is returned.
* On success, the given filename is added to the Logs structure and 0 is
* returned. */
int
set_log (Logs *logs, const char *value) {
if (str_inarray (value, conf.filenames, conf.filenames_idx) < 0)
return ERR_LOG_NOT_FOUND;
return set_glog (logs, value);
}
/* Allocate memory for a new set of Logs including a GLog instance.
*
* On success, the newly allocated Logs is returned . */
Logs *
init_logs (int size) {
Logs *logs = NULL;
GLog *glog = NULL;
int i = 0, ret = 0;
/* if no logs no a pipe nor restoring, nothing to do then */
if (!size && !conf.restore)
return NULL;
/* If no logs nor a pipe but restoring, we still need an minimal instance of
* logs and a glog */
if (!size) {
logs = xcalloc (1, sizeof (*logs));
logs->glog = xcalloc (1, sizeof (*glog));
logs->processed = &(logs->glog[0].processed);
return logs;
}
logs = new_logs (size);
logs->size = size;
for (i = 0; i < size; ++i) {
if ((ret = set_log (logs, conf.filenames[i])))
FATAL ("%s\n", ERR_LOG_NOT_FOUND_MSG);
}
return logs;
}
/* Free all log errors stored during parsing. */
void
free_logerrors (GLog *glog) {
int i;
if (!glog->log_erridx)
return;
for (i = 0; i < glog->log_erridx; ++i)
free (glog->errors[i]);
glog->log_erridx = 0;
}
/* Free all log containers. */
void
free_logs (Logs *logs) {
GLog *glog = NULL;
int i;
for (i = 0; i < logs->size; ++i) {
glog = &logs->glog[i];
free (glog->props.filename);
free (glog->props.fname);
free (glog->fname_as_vhost);
free_logerrors (glog);
free (glog->errors);
if (glog->pipe) {
fclose (glog->pipe);
}
}
free (logs->glog);
free (logs);
}
/* Initialize a new GLogItem instance.
*
* On success, the new GLogItem instance is returned. */
GLogItem *
init_log_item (GLog *glog) {
GLogItem *logitem;
logitem = xmalloc (sizeof (GLogItem));
memset (logitem, 0, sizeof *logitem);
logitem->agent = NULL;
logitem->browser = NULL;
logitem->browser_type = NULL;
logitem->continent = NULL;
logitem->asn = NULL;
logitem->country = NULL;
logitem->date = NULL;
logitem->errstr = NULL;
logitem->host = NULL;
logitem->keyphrase = NULL;
logitem->method = NULL;
logitem->os = NULL;
logitem->os_type = NULL;
logitem->protocol = NULL;
logitem->qstr = NULL;
logitem->ref = NULL;
logitem->req_key = NULL;
logitem->req = NULL;
logitem->resp_size = 0LL;
logitem->serve_time = 0;
logitem->status = -1;
logitem->time = NULL;
logitem->uniq_key = NULL;
logitem->vhost = NULL;
logitem->userid = NULL;
logitem->cache_status = NULL;
/* UMS */
logitem->mime_type = NULL;
logitem->tls_type = NULL;
logitem->tls_cypher = NULL;
logitem->tls_type_cypher = NULL;
memset (logitem->site, 0, sizeof (logitem->site));
memset (logitem->agent_hex, 0, sizeof (logitem->agent_hex));
logitem->dt = glog->start_time;
return logitem;
}
/* Free all members of a GLogItem */
void
free_glog (GLogItem *logitem) {
if (logitem->agent != NULL)
free (logitem->agent);
if (logitem->browser != NULL)
free (logitem->browser);
if (logitem->browser_type != NULL)
free (logitem->browser_type);
if (logitem->continent != NULL)
free (logitem->continent);
if (logitem->asn != NULL)
free (logitem->asn);
if (logitem->country != NULL)
free (logitem->country);
if (logitem->date != NULL)
free (logitem->date);
if (logitem->errstr != NULL)
free (logitem->errstr);
if (logitem->host != NULL)
free (logitem->host);
if (logitem->keyphrase != NULL)
free (logitem->keyphrase);
if (logitem->method != NULL)
free (logitem->method);
if (logitem->os != NULL)
free (logitem->os);
if (logitem->os_type != NULL)
free (logitem->os_type);
if (logitem->protocol != NULL)
free (logitem->protocol);
if (logitem->qstr != NULL)
free (logitem->qstr);
if (logitem->ref != NULL)
free (logitem->ref);
if (logitem->req_key != NULL)
free (logitem->req_key);
if (logitem->req != NULL)
free (logitem->req);
if (logitem->time != NULL)
free (logitem->time);
if (logitem->uniq_key != NULL)
free (logitem->uniq_key);
if (logitem->userid != NULL)
free (logitem->userid);
if (logitem->cache_status != NULL)
free (logitem->cache_status);
if (logitem->vhost != NULL)
free (logitem->vhost);
if (logitem->mime_type != NULL)
free (logitem->mime_type);
if (logitem->tls_type != NULL)
free (logitem->tls_type);
if (logitem->tls_cypher != NULL)
free (logitem->tls_cypher);
if (logitem->tls_type_cypher != NULL)
free (logitem->tls_type_cypher);
free (logitem);
}
/* Decodes the given URL-encoded string.
*
* On success, the decoded string is assigned to the output buffer. */
#define B16210(x) (((x) >= '0' && (x) <= '9') ? ((x) - '0') : (toupper((unsigned char) (x)) - 'A' + 10))
static void
decode_hex (char *url, char *out) {
char *ptr;
const char *c;
for (c = url, ptr = out; *c; c++) {
if (*c != '%' || !isxdigit ((unsigned char) c[1]) || !isxdigit ((unsigned char) c[2])) {
*ptr++ = *c;
} else {
*ptr++ = (char) ((B16210 (c[1]) * 16) + (B16210 (c[2])));
c += 2;
}
}
*ptr = 0;
}
/* Entry point to decode the given URL-encoded string.
*
* On success, the decoded trimmed string is assigned to the output
* buffer. */
static char *
decode_url (char *url) {
char *out, *decoded;
if ((url == NULL) || (*url == '\0'))
return NULL;
out = decoded = xstrdup (url);
decode_hex (url, out);
/* double encoded URL? */
if (conf.double_decode)
decode_hex (decoded, out);
strip_newlines (out);
return trim_str (out);
}
/* Process keyphrases from Google search, cache, and translate.
* Note that the referer hasn't been decoded at the entry point
* since there could be '&' within the search query.
*
* On error, 1 is returned.
* On success, the extracted keyphrase is assigned and 0 is returned. */
static int
extract_keyphrase (char *ref, char **keyphrase) {
char *r, *ptr, *pch, *referer;
int encoded = 0;
if (!(strstr (ref, "http://www.google.")) &&
!(strstr (ref, "http://webcache.googleusercontent.com/")) &&
!(strstr (ref, "http://translate.googleusercontent.com/")) &&
!(strstr (ref, "https://www.google.")) &&
!(strstr (ref, "https://webcache.googleusercontent.com/")) &&
!(strstr (ref, "https://translate.googleusercontent.com/")))
return 1;
/* webcache.googleusercontent */
if ((r = strstr (ref, "/+&")) != NULL)
return 1;
/* webcache.googleusercontent */
else if ((r = strstr (ref, "/+")) != NULL)
r += 2;
/* webcache.googleusercontent */
else if ((r = strstr (ref, "q=cache:")) != NULL) {
pch = strchr (r, '+');
if (pch)
r += pch - r + 1;
}
/* www.google.* or translate.googleusercontent */
else if ((r = strstr (ref, "&q=")) != NULL || (r = strstr (ref, "?q=")) != NULL)
r += 3;
else if ((r = strstr (ref, "%26q%3D")) != NULL || (r = strstr (ref, "%3Fq%3D")) != NULL)
encoded = 1, r += 7;
else
return 1;
if (!encoded && (ptr = strchr (r, '&')) != NULL)
*ptr = '\0';
else if (encoded && (ptr = strstr (r, "%26")) != NULL)
*ptr = '\0';
referer = decode_url (r);
if (referer == NULL || *referer == '\0') {
free (referer);
return 1;
}
referer = char_replace (referer, '+', ' ');
*keyphrase = trim_str (referer);
return 0;
}
/* Parse a URI and extracts the *host* part from it
* i.e., //www.example.com/path?googleguy > www.example.com
*
* On error, 1 is returned.
* On success, the extracted referer is set and 0 is returned. */
static int
extract_referer_site (const char *referer, char *host) {
char *url, *begin, *end;
int len = 0;
if ((referer == NULL) || (*referer == '\0'))
return 1;
url = strdup (referer);
if ((begin = strstr (url, "//")) == NULL)
goto clean;
begin += 2;
if ((len = strlen (begin)) == 0)
goto clean;
if ((end = strpbrk (begin, "/?")) != NULL)
len = end - begin;
if (len == 0)
goto clean;
if (len >= REF_SITE_LEN)
len = REF_SITE_LEN;
memcpy (host, begin, len);
host[len] = '\0';
free (url);
return 0;
clean:
free (url);
return 1;
}
/* Determine if the given request is static (e.g., jpg, css, js, etc).
*
* On error, or if not static, 0 is returned.
* On success, the 1 is returned. */
static int
verify_static_content (const char *req) {
const char *nul = NULL;
const char *ext = NULL, *pch = NULL;
int elen = 0, i;
if ((req == NULL) || (*req == '\0'))
return 0;
nul = req + strlen (req);
for (i = 0; i < conf.static_file_idx; ++i) {
ext = conf.static_files[i];
if (ext == NULL || *ext == '\0')
continue;
elen = strlen (ext);
if (conf.all_static_files && (pch = strchr (req, '?')) != NULL && pch - req > elen) {
pch -= elen;
if (0 == strncasecmp (ext, pch, elen))
return 1;
continue;
}
if (nul - req > elen && !strncasecmp (nul - elen, ext, elen))
return 1;
}
return 0;
}
/* Extract the HTTP method.
*
* On error, or if not found, NULL is returned.
* On success, the HTTP method is returned. */
static const char *
extract_method (const char *token) {
size_t i;
for (i = 0; i < http_methods_len; i++) {
if (strncasecmp (token, http_methods[i].method, http_methods[i].len) == 0) {
return http_methods[i].method;
}
}
return NULL;
}
static int
is_cache_hit (const char *tkn) {
if (strcasecmp ("MISS", tkn) == 0)
return 1;
else if (strcasecmp ("BYPASS", tkn) == 0)
return 1;
else if (strcasecmp ("EXPIRED", tkn) == 0)
return 1;
else if (strcasecmp ("STALE", tkn) == 0)
return 1;
else if (strcasecmp ("UPDATING", tkn) == 0)
return 1;
else if (strcasecmp ("REVALIDATED", tkn) == 0)
return 1;
else if (strcasecmp ("HIT", tkn) == 0)
return 1;
return 0;
}
/* Determine if the given token is a valid HTTP protocol.
*
* If not valid, 1 is returned.
* If valid, 0 is returned. */
static const char *
extract_protocol (const char *token) {
size_t i;
for (i = 0; i < http_protocols_len; i++) {
if (strncasecmp (token, http_protocols[i].protocol, http_protocols[i].len) == 0) {
return http_protocols[i].protocol;
}
}
return NULL;
}
/* Parse a request containing the method and protocol.
*
* On error, or unable to parse, NULL is returned.
* On success, the HTTP request is returned and the method and
* protocol are assigned to the corresponding buffers. */
static char *
parse_req (char *line, char **method, char **protocol) {
char *req = NULL, *request = NULL, *dreq = NULL, *ptr = NULL;
const char *meth, *proto;
ptrdiff_t rlen;
meth = extract_method (line);
/* couldn't find a method, so use the whole request line */
if (meth == NULL) {
request = xstrdup (line);
}
/* method found, attempt to parse request */
else {
req = line + strlen (meth);
if (!(ptr = strrchr (req, ' ')) || !(proto = extract_protocol (++ptr)))
return alloc_string ("-");
req++;
if ((rlen = ptr - req) <= 0)
return alloc_string ("-");
request = xmalloc (rlen + 1);
strncpy (request, req, rlen);
request[rlen] = 0;
if (conf.append_method)
(*method) = strtoupper (xstrdup (meth));
if (conf.append_protocol)
(*protocol) = strtoupper (xstrdup (proto));
}
if (!(dreq = decode_url (request)))
return request;
else if (*dreq == '\0') {
free (dreq);
return request;
}
free (request);
return dreq;
}
#if defined(HAVE_LIBSSL) && defined(HAVE_CIPHER_STD_NAME)
static int
extract_tls_version_cipher (char *tkn, char **cipher, char **tls_version) {
SSL_CTX *ctx = NULL;
SSL *ssl = NULL;
int code = 0;
unsigned short code_be;
unsigned char cipherid[3];
const SSL_CIPHER *c = NULL;
char *bEnd;
const char *sn = NULL;
code = strtoull (tkn, &bEnd, 10);
if (tkn == bEnd || *bEnd != '\0' || errno == ERANGE) {
LOG_DEBUG (("unable to convert cipher code to a valid decimal."));
goto fail;
}
/* ssl context */
if (!(ctx = SSL_CTX_new (SSLv23_server_method ()))) {
LOG_DEBUG (("Unable to create a new SSL_CTX_new to extract TLS."));
goto fail;
}
if (!(ssl = SSL_new (ctx))) {
LOG_DEBUG (("Unable to create a new instance of SSL_new to extract TLS."));
goto fail;
}
code_be = htobe16 (code);
memcpy (cipherid, &code_be, 2);
cipherid[2] = 0;
if (!(c = SSL_CIPHER_find (ssl, cipherid))) {
LOG_DEBUG (("Unable to find cipher to extract TLS."));
goto fail;
}
if (!(sn = SSL_CIPHER_standard_name (c))) {
LOG_DEBUG (("Unable to get cipher standard name to extract TLS."));
goto fail;
}
*cipher = xstrdup (sn);
*tls_version = xstrdup (SSL_CIPHER_get_version (c));
free (tkn);
SSL_free (ssl);
SSL_CTX_free (ctx);
return 0;
fail:
free (tkn);
if (ssl)
SSL_free (ssl);
if (ctx)
SSL_CTX_free (ctx);
return 1;
}
#endif
/* Extract the next delimiter given a log format and copy the delimiter to the
* destination buffer.
*
* On error, the dest buffer will be empty.
* On success, the delimiter(s) are stored in the dest buffer. */
static void
get_delim (char *dest, const char *p) {
/* done, nothing to do */
if (p[0] == '\0' || p[1] == '\0') {
dest[0] = '\0';
return;
}
/* add the first delim */
dest[0] = *(p + 1);
}
/* Extract and malloc a token given the parsed rule.
*
* On success, the malloc'd token is returned. */
static char *
parsed_string (const char *pch, const char **str, int move_ptr) {
char *p;
size_t len = (pch - *str + 1);
p = xmalloc (len);
memcpy (p, *str, (len - 1));
p[len - 1] = '\0';
if (move_ptr)
*str += len - 1;
return trim_str (p);
}
/* Find and extract a token given a log format rule.
*
* On error, or unable to parse it, NULL is returned.
* On success, the malloc'd token is returned. */
static char *
parse_string (const char **str, const char *delims, int cnt) {
int idx = 0;
const char *pch = *str, *p = NULL;
char end;
if ((*delims != 0x0) && (p = strpbrk (*str, delims)) == NULL)
return NULL;
end = !*delims ? 0x0 : *p;
do {
/* match number of delims */
if (*pch == end)
idx++;
/* delim found, parse string then */
if ((*pch == end && cnt == idx) || *pch == '\0')
return parsed_string (pch, str, 1);
/* advance to the first unescaped delim */
if (*pch == '\\')
pch++;
} while (*pch++);
return NULL;
}
char *
extract_by_delim (const char **str, const char *end) {
return parse_string (&(*str), end, 1);
}
/* Move forward through the log string until a non-space (!isspace)
* char is found. */
static void
find_alpha (const char **str) {
const char *s = *str;
while (*s) {
if (isspace ((unsigned char) *s))
s++;
else
break;
}
*str += s - *str;
}
/* Move forward through the log string until a non-space (!isspace)
* char is found and returns the count. */
static int
find_alpha_count (const char *str) {
int cnt = 0;
const char *s = str;
while (*s) {
if (isspace ((unsigned char) *s))
s++, cnt++;
else
break;
}
return cnt;
}
/* Format the broken-down time tm to a numeric date format.
*
* On error, or unable to format the given tm, 1 is returned.
* On success, a malloc'd format is returned. */
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
static int
set_date (char **fdate, struct tm tm) {
char buf[DATE_LEN] = ""; /* Ymd */
memset (buf, 0, sizeof (buf));
if (strftime (buf, DATE_LEN, conf.date_num_format, &tm) <= 0)
return 1;
*fdate = xstrdup (buf);
return 0;
}
/* Format the broken-down time tm to a numeric time format.
*
* On error, or unable to format the given tm, 1 is returned.
* On success, a malloc'd format is returned. */
static int
set_time (char **ftime, struct tm tm) {
char buf[TIME_LEN] = "";
memset (buf, 0, sizeof (buf));
if (strftime (buf, TIME_LEN, "%H:%M:%S", &tm) <= 0)
return 1;
*ftime = xstrdup (buf);
return 0;
}
/* Determine the parsing specifier error and construct a message out
* of it.
*
* On success, a malloc'd error message is assigned to the log
* structure and 1 is returned. */
static int
spec_err (GLogItem *logitem, int code, const char spec, const char *tkn) {
char *err = NULL;
const char *fmt = NULL;
switch (code) {
case ERR_SPEC_TOKN_NUL:
fmt = "Token for '%%%c' specifier is NULL.";
err = xmalloc (snprintf (NULL, 0, fmt, spec) + 1);
sprintf (err, fmt, spec);
break;
case ERR_SPEC_TOKN_INV:
fmt = "Token '%s' doesn't match specifier '%%%c'";
err = xmalloc (snprintf (NULL, 0, fmt, (tkn ? tkn : "-"), spec) + 1);
sprintf (err, fmt, (tkn ? tkn : "-"), spec);
break;
case ERR_SPEC_SFMT_MIS:
fmt = "Missing braces '%s' and ignore chars for specifier '%%%c'";
err = xmalloc (snprintf (NULL, 0, fmt, (tkn ? tkn : "-"), spec) + 1);
sprintf (err, fmt, (tkn ? tkn : "-"), spec);
break;
case ERR_SPEC_LINE_INV:
fmt = "Incompatible format due to early parsed line ending '\\0'.";
err = xmalloc (snprintf (NULL, 0, fmt, (tkn ? tkn : "-")) + 1);
sprintf (err, fmt, (tkn ? tkn : "-"));
break;
}
logitem->errstr = err;
return code;
}
static void
set_tm_dt_logitem (GLogItem *logitem, struct tm tm) {
logitem->dt.tm_year = tm.tm_year;
logitem->dt.tm_mon = tm.tm_mon;
logitem->dt.tm_mday = tm.tm_mday;
}
static void
set_tm_tm_logitem (GLogItem *logitem, struct tm tm) {
logitem->dt.tm_hour = tm.tm_hour;
logitem->dt.tm_min = tm.tm_min;
logitem->dt.tm_sec = tm.tm_sec;
}
static void
set_numeric_date (uint32_t *numdate, const char *date) {
int res = 0;
if ((res = str2int (date)) == -1)
FATAL ("Unable to parse date to integer %s", date);
*numdate = res;
}
static void
set_agent_hash (GLogItem *logitem) {
logitem->agent_hash = djb2 ((unsigned char *) logitem->agent);
sprintf (logitem->agent_hex, "%" PRIx32, logitem->agent_hash);
}
static int
handle_default_case_token (const char **str, const char *p) {
char *pch = NULL;
if ((pch = strchr (*str, p[1])) != NULL)
*str += pch - *str;
return 0;
}
#pragma GCC diagnostic warning "-Wformat-nonliteral"
/* Parse the log string given log format rule.
*
* On error, or unable to parse it, 1 is returned.
* On success, the malloc'd token is assigned to a GLogItem member. */
static int
parse_specifier (GLogItem *logitem, const char **str, const char *p, const char *end) {
struct tm tm;
const char *dfmt = conf.date_format;
const char *tfmt = conf.time_format;
char *pch, *sEnd, *bEnd, *tkn = NULL;
double serve_secs = 0.0;
uint64_t bandw = 0, serve_time = 0;
int dspc = 0, fmtspcs = 0;
errno = 0;
memset (&tm, 0, sizeof (tm));
tm.tm_isdst = -1;
tm = logitem->dt;
switch (*p) {
/* date */
case 'd':
if (logitem->date)
return handle_default_case_token (str, p);
/* Attempt to parse date format containing spaces,
* i.e., syslog date format (Jul\s15, Nov\s\s2).
* Note that it's possible a date could contain some padding, e.g.,
* Dec\s\s2 vs Nov\s22, so we attempt to take that into consideration by looking
* ahead the log string and counting the # of spaces until we find an alphanum char. */
if ((fmtspcs = count_matches (dfmt, ' ')) && (pch = strchr (*str, ' ')))
dspc = find_alpha_count (pch);
if (!(tkn = parse_string (&(*str), end, MAX (dspc, fmtspcs) + 1)))
return spec_err (logitem, ERR_SPEC_TOKN_NUL, *p, NULL);
if (str_to_time (tkn, dfmt, &tm, 1) != 0 || set_date (&logitem->date, tm) != 0) {
spec_err (logitem, ERR_SPEC_TOKN_INV, *p, tkn);
free (tkn);
return 1;
}
set_numeric_date (&logitem->numdate, logitem->date);
set_tm_dt_logitem (logitem, tm);
free (tkn);
break;
/* time */
case 't':
if (logitem->time)
return handle_default_case_token (str, p);
if (!(tkn = parse_string (&(*str), end, 1)))
return spec_err (logitem, ERR_SPEC_TOKN_NUL, *p, NULL);
if (str_to_time (tkn, tfmt, &tm, 1) != 0 || set_time (&logitem->time, tm) != 0) {
spec_err (logitem, ERR_SPEC_TOKN_INV, *p, tkn);
free (tkn);
return 1;
}
set_tm_tm_logitem (logitem, tm);
free (tkn);
break;
/* date/time as decimal, i.e., timestamps, ms/us */
case 'x':
if (logitem->time && logitem->date)
return handle_default_case_token (str, p);
if (!(tkn = parse_string (&(*str), end, 1)))
return spec_err (logitem, ERR_SPEC_TOKN_NUL, *p, NULL);
if (str_to_time (tkn, tfmt, &tm, 1) != 0 || set_date (&logitem->date, tm) != 0 ||
set_time (&logitem->time, tm) != 0) {
spec_err (logitem, ERR_SPEC_TOKN_INV, *p, tkn);
free (tkn);
return 1;
}
set_numeric_date (&logitem->numdate, logitem->date);
set_tm_dt_logitem (logitem, tm);
set_tm_tm_logitem (logitem, tm);
free (tkn);
break;
/* Virtual Host */
case 'v':
if (logitem->vhost)
return handle_default_case_token (str, p);
tkn = parse_string (&(*str), end, 1);
if (tkn == NULL)
return spec_err (logitem, ERR_SPEC_TOKN_NUL, *p, NULL);
logitem->vhost = tkn;
break;
/* remote user */
case 'e':
if (logitem->userid)
return handle_default_case_token (str, p);
tkn = parse_string (&(*str), end, 1);
if (tkn == NULL)
return spec_err (logitem, ERR_SPEC_TOKN_NUL, *p, NULL);
logitem->userid = tkn;
break;
/* cache status */
case 'C':
if (logitem->cache_status)
return handle_default_case_token (str, p);
tkn = parse_string (&(*str), end, 1);
if (tkn == NULL)
return spec_err (logitem, ERR_SPEC_TOKN_NUL, *p, NULL);
if (is_cache_hit (tkn))