-
Notifications
You must be signed in to change notification settings - Fork 30
/
httpserver.c
6308 lines (5627 loc) · 222 KB
/
httpserver.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
/*
This program and the accompanying materials are
made available under the terms of the Eclipse Public License v2.0 which accompanies
this distribution, and is available at https://www.eclipse.org/legal/epl-v20.html
SPDX-License-Identifier: EPL-2.0
Copyright Contributors to the Zowe Project.
*/
#ifdef METTLE
#include <metal/metal.h>
#include <metal/stddef.h>
#include <metal/stdio.h>
#include <metal/stdlib.h>
#include <metal/string.h>
#include <metal/stdarg.h>
#include <metal/ctype.h>
#include "metalio.h"
#else
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <sys/stat.h>
#include <ctype.h>
#ifndef __ZOWE_OS_WINDOWS
#include <time.h>
#include <errno.h>
#endif
#endif /* METTLE */
#include "zowetypes.h"
#include "alloc.h"
#include "utils.h"
#include "openprims.h"
#include "xml.h"
#include "json.h"
#include "bpxnet.h"
#include "unixfile.h"
#include "xlate.h"
#ifdef __ZOWE_OS_ZOS
#include "zos.h"
#include "icsf.h"
#include "recovery.h"
#include "zis/client.h"
#else
#include <stdatomic.h>
#endif
#include "collections.h"
#include "le.h"
#include "scheduling.h"
#include "utils.h"
#include "socketmgmt.h"
#include "crypto.h"
#include "charsets.h"
#include "impersonation.h"
#include "httpserver.h"
#ifdef USE_RS_SSL
#include "rs_ssl.h"
#endif
#ifdef USE_ZOWE_TLS
#include "tls.h"
#endif // USE_ZOWE_TLS
#include "../jwt/jwt/jwt.h"
/* bool and time_t are not available for
* METAL builds, but casting them to ints
* is valid.
*/
#ifdef METTLE
typedef int time_t;
#endif
#define READ_BUFFER_SIZE 65536
#ifndef APF_AUTHORIZED
#define APF_AUTHORIZED 1
#endif
#define SAF_RC_PASSWORD_EXPIRED 8
#define RACF_RC_PASSWORD_EXPIRED 12
typedef struct AuthResponse_tag {
int type;
#define AUTH_TYPE_RACF 1
union {
#ifdef __ZOWE_OS_ZOS
SAFAuthStatus safStatus;
#else
int someStatus;
#endif
} responseDetails;
} AuthResponse;
/* FIX THIS: a temporary "low profile" way of hiding printfs. Improves
* demo performance while we wait for
* the introduction of a proper tracing infrastructure.
*/
#ifdef TRACEON
#define TEMP_TRACE(...) \
printf(__VA_ARGS__);
#else
#define TEMP_TRACE(...) 3
#endif
#define AUTH_TRACE(...) do { \
if (traceAuth) { \
printf(__VA_ARGS__); \
fflush(stdout); \
} \
} while (0)
#define AUTH_DUMPBUF($buf, $len) do { \
if (traceAuth) { \
dumpbuffer((void *)(uintptr_t)$buf, $len); \
fflush(stdout); \
} \
} while (0)
#ifdef DEBUG
#define DEBUG_TRACE(...) do { \
printf(__VA_ARGS__); \
fflush(stdout); \
} while (0)
#else
# define DEBUG_TRACE(...) do {} while (0)
#endif
/* A *very special* ifdef had been chosen so we never accidentally ship an
* executable that can be persuaded to print out passwords
*/
#ifdef ENABLE_DANGEROUS_AUTH_TRACING
# define DANGEROUS_TRACE AUTH_TRACE
# define DANGEROUS_DUMPBUF AUTH_DUMPBUF
#else
# define DANGEROUS_TRACE(...) do {} while (0)
# define DANGEROUS_DUMPBUF(...) do {} while (0)
#endif
/***** General Primitives ******************************/
static int traceParse = 0;
static int traceDispatch = 0;
static int traceHeaders = 0;
static int traceSocket = 0;
static int traceHttpCloseConversation = 0;
static int traceAuth = 0;
int setHttpParseTrace(int toWhat) {
int was = traceParse;
#ifndef METTLE
traceParse = toWhat;
#endif
return was;
}
int setHttpDispatchTrace(int toWhat) {
int was = traceDispatch;
#ifndef METTLE
traceDispatch = toWhat;
#endif
return was;
}
int setHttpHeadersTrace(int toWhat) {
int was = traceHeaders;
#ifndef METTLE
traceHeaders = toWhat;
#endif
return was;
}
int setHttpSocketTrace(int toWhat) {
int was = traceSocket;
#ifndef METTLE
traceSocket = toWhat;
#endif
return was;
}
int setHttpCloseConversationTrace(int toWhat) {
int was = traceHttpCloseConversation;
#ifndef METTLE
traceHttpCloseConversation = toWhat;
#endif
return was;
}
int setHttpAuthTrace(int toWhat) {
int was = traceAuth;
#ifndef METTLE
traceAuth = toWhat;
#endif
return was;
}
static char crlf[] ={ 0x0d, 0x0a};
#define TRANSFER_ENCODING "Transfer-Encoding"
#define CHUNKED "chunked"
#define CONTENT_LENGTH "Content-Length"
#define UPGRADE "Upgrade"
#define WEBSOCKET "websocket"
/* Note: I think DEFAULT_UMASK is obsolete. Joe on 4/28/2022 */
#ifdef __ZOWE_OS_ZOS
#define NATIVE_CODEPAGE CCSID_EBCDIC_1047
#define DEFAULT_UMASK 0022
#elif defined(__ZOWE_OS_WINDOWS)
#define NATIVE_CODEPAGE CP_UTF8
#define DEFAULT_UMASK 0022
#elif defined(__ZOWE_OS_LINUX) || defined(__ZOWE_OS_AIX)
#define NATIVE_CODEPAGE CCSID_ISO_8859_1
#warning ISO-8859-1 is not necessarily the default codepage on Linux
#define DEFAULT_UMASK 0022
#endif
//No need to fill logs with the same message, warn based on a desired frequency
#if defined(__ZOWE_OS_ZOS) || defined(USE_RS_SSL) || defined(USE_ZOWE_TLS)
#ifndef TLS_WARN_FREQUENCY
#define TLS_WARN_FREQUENCY 25
#endif
static unsigned int tlsWarnCounter = 0;
#endif
static int64 getFineGrainedTime();
static char *getSessionTokenCookieName(HttpService *service);
/* worry about compareIgnoringCase
worry about where ebcdic value is being used meaningfully */
HttpRequestParamSpec *makeParamSpec(char *name, int flags, int type, HttpRequestParamSpec *next){
HttpRequestParamSpec *spec = (HttpRequestParamSpec*)safeMalloc31(sizeof(HttpRequestParamSpec),"HTTP Param Spec");
spec->name = name;
spec->flags = flags;
spec->type = type;
spec->next = next;
spec->minWidth = 0;
spec->maxWidth = 1;
spec->lowBound = 0;
spec->highBound = 1;
return spec;
}
HttpRequestParamSpec *makeIntParamSpec(char *name, int flags,
int minWidth, int maxWidth,
int lowBound, int highBound,
HttpRequestParamSpec *next){
HttpRequestParamSpec *spec = (HttpRequestParamSpec*)safeMalloc(sizeof(HttpRequestParamSpec),"HTTP Int Param Spec");
spec->name = name;
spec->flags = flags;
spec->type = SERVICE_ARG_TYPE_INT;
spec->minWidth = minWidth;
spec->maxWidth = maxWidth;
spec->lowBound = lowBound;
spec->highBound = highBound;
spec->next = next;
return spec;
}
HttpRequestParamSpec *makeInt64ParamSpec(char *name, int flags,
int minWidth, int maxWidth,
int64 lowBound, int64 highBound,
HttpRequestParamSpec *next){
HttpRequestParamSpec *spec = (HttpRequestParamSpec*)safeMalloc(sizeof(HttpRequestParamSpec),"HTTP Int Param Spec");
spec->name = name;
spec->flags = flags;
spec->type = SERVICE_ARG_TYPE_INT64;
spec->minWidth = minWidth;
spec->maxWidth = maxWidth;
spec->lowBound64 = lowBound;
spec->highBound64 = highBound;
spec->next = next;
return spec;
}
HttpRequestParamSpec *makeStringParamSpec(char *name, int flags,
HttpRequestParamSpec *next){
HttpRequestParamSpec *spec = (HttpRequestParamSpec*)safeMalloc(sizeof(HttpRequestParamSpec),"HTTP Int Param Spec");
spec->name = name;
spec->flags = flags;
spec->type = SERVICE_ARG_TYPE_STRING;
spec->next = next;
return spec;
}
static HttpRequestParam *makeIntParam(HttpRequest *request, HttpRequestParamSpec *spec, int value){
HttpRequestParam *param = (HttpRequestParam*)SLHAlloc(request->slh,sizeof(HttpRequestParam));
param->specification = spec;
param->intValue = value;
param->next = NULL;
return param;
}
static HttpRequestParam *makeInt64Param(HttpRequest *request, HttpRequestParamSpec *spec, int64 value){
HttpRequestParam *param = (HttpRequestParam*)SLHAlloc(request->slh,sizeof(HttpRequestParam));
param->specification = spec;
param->int64Value = value;
param->next = NULL;
return param;
}
static HttpRequestParam *makeStringParam(HttpRequest *request, HttpRequestParamSpec *spec, char *stringValue){
HttpRequestParam *param = (HttpRequestParam*)SLHAlloc(request->slh,sizeof(HttpRequestParam));
param->specification = spec;
param->stringValue = stringValue;
param->next = NULL;
return param;
}
#define NO_TRANSLATE 0
#define TRANSLATE_8859_1 1
void initBufferedInput(BufferedInputStream *s, Socket *socket, char *buffer, int bufferSize){
s->socket = socket;
s->buffer = buffer;
s->bufferSize = bufferSize;
s->fill = 0;
s->pos = 0;
s->eof = 0;
}
int readByte(BufferedInputStream *s){
if (s->eof){
return -1;
} else if (s->pos == s->fill){
int returnCode;
int reasonCode;
/* how do we *WAIT* on a read */
int bytesRead = socketRead(s->socket,s->buffer,s->bufferSize,&returnCode,&reasonCode);
if (bytesRead > 0)
{
zowelog(NULL, LOG_COMP_HTTPSERVER, ZOWE_LOG_DEBUG3, "read more bytes = %d, showing upto 32\n",bytesRead);
#ifdef DEBUG
if (bytesRead > 32){
dumpbuffer(s->buffer,32);
} else{
dumpbuffer(s->buffer,bytesRead);
}
#endif
s->fill = bytesRead;
s->pos = 0;
return s->buffer[s->pos++]&0xff;
}
else if (bytesRead == -1)
{
zowelog(NULL, LOG_COMP_HTTPSERVER, ZOWE_LOG_DEBUG3, "socket read -1, errno = %d\n",returnCode);
/* should check for errno==EINTR */
s->eof = 1;
return -1;
}
else
{
zowelog(NULL, LOG_COMP_HTTPSERVER, ZOWE_LOG_DEBUG3, "socket read 0, if blocking then EOF\n");
s->eof = 1;
return -1;
}
} else{
return s->buffer[s->pos++]&0xff;
}
}
void initChunkedOutput(ChunkedOutputStream *s, HttpResponse *response,
char *buffer, char *translateBuffer, int bufferSize){
s->response = response;
s->buffer = buffer;
s->translateBuffer = translateBuffer;
s->bufferSize = bufferSize;
s->fill = 0;
}
static void chunkWrite(ChunkedOutputStream *s, char *data, int len){
if (s->isErrorState) {
return;
}
HttpResponse *response = s->response;
if (response->runningInSubtask){
HttpConversation *conversation = response->conversation;
/* enqueue to main thread */
STCBase *stcBase = conversation->server->base;
WorkElementPrefix *prefix = (WorkElementPrefix*)safeMalloc31(sizeof(WorkElementPrefix)+sizeof(HttpWorkElement),"HttpWorkElement and Prefix");
HttpWorkElement *workElement = (HttpWorkElement*)(((char*)prefix)+sizeof(WorkElementPrefix));
memset(prefix,0,sizeof(WorkElementPrefix));
memcpy(prefix->eyecatcher,"WRKELMNT",8);
prefix->payloadCode = HTTP_CONTINUE_OUTPUT;
prefix->payloadLength = sizeof(HttpWorkElement);
memset(workElement,0,sizeof(HttpWorkElement));
workElement->conversation = conversation;
workElement->response = response;
workElement->buffer = data;
workElement->bufferLength = len;
workElement->reclaimAfterWrite = FALSE;
zowelog(NULL, LOG_COMP_HTTPSERVER, ZOWE_LOG_DEBUG3, "ENQUEUE\n");
stcEnqueueWork(stcBase,prefix);
} else{
int writeRC = writeFully(s->response->socket,data,len);
if (writeRC == 0) {
s->isErrorState = true;
}
}
}
void writeTransferChunkHeader(ChunkedOutputStream *s, int size){
char buffer[100];
#ifdef __ZOWE_OS_ZOS
int len = sprintf(buffer,"%x%c%c",size,0x0d,0x15); /*EBCDIC CRLF */
#else
int len = sprintf(buffer,"%x%c%c",size,0x0d,0x0a); /* CRLF */
#endif
toASCIIUTF8(buffer,len);
chunkWrite(s,buffer,len);
}
void writeBytes(ChunkedOutputStream *s, char *data, int len, int translate){
/* if data len greater than bufferSize
1) finish chunk if fill > 0
2) write data as a transfer chunk
3) reset to 0
if data fills or overfills
1) lay in the section to fill current chunk
2) flush buffer as transfer chunk
3) accumulate remainder into buffer
otherwise
3) accumulate to buffer
*/
if (len > s->bufferSize){
if (s->fill > 0){
writeTransferChunkHeader(s,s->fill);
/* HERE - translate */
if (translate) {
toASCIIUTF8(s->buffer,s->fill);
}
chunkWrite(s,s->buffer,s->fill);
chunkWrite(s,crlf,2);
}
writeTransferChunkHeader(s,len);
if (translate) {
toASCIIUTF8(data,len);
}
chunkWrite(s,data,len);
chunkWrite(s,crlf,2);
s->fill = 0;
} else if ((s->fill + len) >= s->bufferSize){
int whatFits = (s->bufferSize - s->fill);
writeTransferChunkHeader(s,s->fill+len);
if (translate) {
toASCIIUTF8(s->buffer,s->fill);
}
chunkWrite(s,s->buffer,s->fill);
memcpy(s->translateBuffer,data,len);
if (translate) {
toASCIIUTF8(s->translateBuffer,len);
}
chunkWrite(s,s->translateBuffer,len);
chunkWrite(s,crlf,2);
s->fill = 0;
} else{
memcpy(s->buffer+s->fill,data,len);
s->fill += len;
}
}
void writeString(ChunkedOutputStream *s, char *string){
int len = strlen(string);
/* printf("writeString \"%s\" ...\n");fflush(stdout); */
writeBytes(s,string,len,TRANSLATE_8859_1);
}
static void finishChunkedOutput(ChunkedOutputStream *s, int translate){
/* flush the last chunk
write the 0 chunk
*/
if (s->fill > 0){
writeTransferChunkHeader(s,s->fill);
if (translate) {
toASCIIUTF8(s->buffer,s->fill);
}
chunkWrite(s,s->buffer,s->fill);
chunkWrite(s,crlf,2);
}
writeTransferChunkHeader(s,0);
chunkWrite(s,crlf,2);
}
// **NOTE**
// **NOTE** finishResponse destroys the response block and the SLH storage associated with it.
// **NOTE**
// **NOTE** - If finishResponse is *not* called upon completion of the response a storage
// **NOTE** leak will occur.
// **NOTE**
// **NOTE** - The response block must not be referenced after finishResponse has been called
// **NOTE** for the response block. Unpredictable results will occur if you do.
// **NOTE**
void finishResponse(HttpResponse *response){
zowelog(NULL, LOG_COMP_HTTPSERVER, ZOWE_LOG_DEBUG3, "finishResponse where response=0x%p\n",response);
if (response->stream){
finishChunkedOutput(response->stream,
(response->jp == NULL)? TRANSLATE_8859_1 : 0);
}
if (response->jp) {
freeJsonPrinter(response->jp);
response->jp = NULL;
}
if (response->conversation){ /* should be true except when unit-testing a "pseudoResponse" */
response->conversation->workingOnResponse = FALSE;
}
response->conversation = NULL; // Prevent a second free of the response block
SLHFree(response->slh);
}
/********** BIG BUFFER **********/
static BigBuffer *makeBigBuffer(int initialSize, ShortLivedHeap *slh){
BigBuffer *buffer = (BigBuffer*)(slh?
SLHAlloc(slh,sizeof(BigBuffer)):
safeMalloc31(sizeof(BigBuffer),"BigBuffer"));
char *data = (slh?
SLHAlloc(slh,initialSize):
safeMalloc31(initialSize,"BigBuffer Data"));
buffer->slh = slh;
buffer->data = data;
buffer->pos = 0;
buffer->size = initialSize;
return buffer;
}
static void freeBigBuffer(BigBuffer *buffer, int freeData){
if (buffer->slh == NULL){
if (freeData){
safeFree31(buffer->data,buffer->size);
}
safeFree31((char*)buffer,sizeof(BigBuffer));
}
}
static void writeToBigBuffer(BigBuffer *buffer, char *newData, int length){
if (buffer->pos + length > buffer->size){
int newSize = buffer->size * 2;
char *newArray = (buffer->slh?
SLHAlloc(buffer->slh,newSize) :
safeMalloc31(newSize,"BigBuffer Data Extension"));
memcpy(newArray,buffer->data,buffer->pos);
if (buffer->slh == NULL){
safeFree31(buffer->data,buffer->size);
}
buffer->data = newArray;
buffer->size = newSize;
}
memcpy(buffer->data+buffer->pos,newData,length);
buffer->pos += length;
}
static void writeByteToBigBuffer(BigBuffer *buffer, int b){
char c;
c = b&0xff;
writeToBigBuffer(buffer,&c,1);
}
static void resetBigBuffer(BigBuffer *buffer){
buffer->pos = 0;
}
/********** WEB SOCKET PRIMITIVES ************/
static WSFrame *makeFrame(int opcodeAndFlags, ShortLivedHeap *slh,
char *data,int dataLength){
WSFrame *frame = (WSFrame*)(slh ?
SLHAlloc(slh,sizeof(WSFrame)) :
safeMalloc31(sizeof(WSFrame),"WSFrame"));
memset(frame,0,sizeof(WSFrame));
frame->opcodeAndFlags = opcodeAndFlags;
frame->data = data;
frame->dataLength = dataLength;
zowelog(NULL, LOG_COMP_HTTPSERVER, ZOWE_LOG_DEBUG3, "WSFrame data in makeFrame length=0x%x\n",dataLength);
dumpbuffer(data,dataLength);
dumpbufferA(data,dataLength);
return frame;
}
WSMessage *makeMessage(int opcode, ShortLivedHeap *slh){
WSMessage *message = (WSMessage*)(slh ?
SLHAlloc(slh,sizeof(WSMessage)) :
safeMalloc31(sizeof(WSMessage),"WSMessage"));
memset(message,0,sizeof(WSMessage));
message->opcodeAndFlags = opcode; /* flags get OR-ed in later */
return message;
}
static void addWSFrame(WSMessage *message, WSFrame *newFrame){
if (message->firstFrame){
WSFrame *frame = message->firstFrame;
while (frame->next){
frame = frame->next;
}
frame->next = newFrame;
} else{
message->firstFrame = newFrame;
}
}
static WSReadMachine *makeWSReadMachine(){
WSReadMachine *machine = (WSReadMachine*)safeMalloc(sizeof(WSReadMachine),"WSReadMachine");
memset(machine,0,sizeof(WSReadMachine));
machine->payloadStream = makeBigBuffer(256,NULL);
return machine;
}
static void enqueueInputMessage(WSReadMachine *machine, WSMessage *newMessage){
if (machine->messageQueueHead){
WSMessage *message = machine->messageQueueHead;
while (message->next){
message = message->next;
}
message->next = newMessage;
} else{
machine->messageQueueHead = newMessage;
}
}
/*adds new server WS msg to provided work element*/
static void addNewWSFrame(HttpWorkElement *workElement,
WSSession *session,
int opcodeAndFlags,
int payloadLength,
char *payload,
int isLastFrame) {
/* build header here */
int isMasked = FALSE; /* false for servers */
int headerLength = 2;
if (payloadLength >= 65536){
headerLength += 8;
} else if (payloadLength >= 126){
headerLength += 2;
}
workElement->buffer = safeMalloc(payloadLength+headerLength,"ws write buffer");
workElement->buffer[0] = opcodeAndFlags;
if (payloadLength >= 65536){
workElement->buffer[1] = 127;
int64 longLength = payloadLength;
memcpy(workElement->buffer+2,&longLength,8);
} else if (payloadLength >= 126){
workElement->buffer[1] = 126;
unsigned short shortLength = payloadLength&0xFFFF;
memcpy(workElement->buffer+2,&shortLength,2);
} else{
workElement->buffer[1] = payloadLength;
}
memcpy(workElement->buffer+headerLength,payload,payloadLength);
workElement->bufferLength = payloadLength+headerLength;
workElement->reclaimAfterWrite = TRUE;
workElement->wsResponseIsBinary = session->isOutputBinary;
workElement->wsResponseIsLastFrame = isLastFrame;
}
static void wsMessageClose(HttpConversation *conversation,
WSSession *session,
int opcodeAndFlags,
char *payload,
int payloadLength) {
STCBase *stcBase = conversation->server->base;
WorkElementPrefix *prefix = (WorkElementPrefix*)safeMalloc31(sizeof(WorkElementPrefix)+sizeof(HttpWorkElement),"HttpWorkElement and Prefix for WS");
HttpWorkElement *workElement = (HttpWorkElement*)(((char*)prefix)+sizeof(WorkElementPrefix));
memset(prefix,0,sizeof(WorkElementPrefix));
memcpy(prefix->eyecatcher,"WRKELMNT",8);
prefix->payloadCode = HTTP_WS_CLOSE_HANDSHAKE;
prefix->payloadLength = sizeof(HttpWorkElement);
memset(workElement,0,sizeof(HttpWorkElement));
workElement->conversation = conversation;
addNewWSFrame(workElement, session, opcodeAndFlags, payloadLength, payload, TRUE);
stcEnqueueWork(stcBase,prefix);
}
static int readMachineAdvance(WSReadMachine *m, char *data, WSSession *wsSession, int offset, int length){
int available = length;
int loopMax = 10;
int loopCount = 0;
int anyMessagesReady = FALSE;
int shouldClose = FALSE;
m->trace = TRUE;
while (available > 0){
if (TRUE || m->trace){
printf("advanceLoop offset=%02d available=%02d headerFill=%02d headerNeed=%02d\n",
offset,available,m->headerFill,m->headerNeed);
dumpbuffer(data+offset,available);
dumpbufferA(data+offset,available);
}
if (m->headerFill < 2){
while ((m->headerFill < 2) && (available > 0)){
m->headerBuffer[m->headerFill++] = data[offset++];
available--;
}
if (m->headerFill < 2){
return FALSE; /* little progress on header */
}
/* compute header need */
m->flagAndOpcodeByte = m->headerBuffer[0]&0xff;
shouldClose = m->flagAndOpcodeByte & 0x08;
zowelog(NULL, LOG_COMP_HTTPSERVER, ZOWE_LOG_DEBUG3, "readMachineAdvance: local shouldClose=%d,wsSession 0x%p, flagAndOpcodeByte 0x%X\n",
shouldClose, wsSession,m->flagAndOpcodeByte);
m->fin = (m->flagAndOpcodeByte&0x80)!=0;
int maskAndPayloadLengthByte = m->headerBuffer[1]&0xff;
int lengthByte = maskAndPayloadLengthByte & 0x7F;
m->isMasked = (maskAndPayloadLengthByte & 0x80) != 0;
m->headerNeed = 2;
if (m->isMasked){
m->headerNeed += 4;
}
if (lengthByte == 127){
m->payloadLengthLength = 8;
} else if (lengthByte == 126){
m->payloadLengthLength = 2;
}
m->headerNeed += m->payloadLengthLength;
if (m->trace){
printf("computed header need %d\n",m->headerNeed);
}
if (m->headerNeed == 2){
m->headerRead = TRUE;
m->payloadLength = lengthByte;
}
}
/* header need is established */
if (m->headerFill < m->headerNeed){
while ((m->headerFill < m->headerNeed) && (available > 0)){
m->headerBuffer[m->headerFill++] = data[offset++];
available--;
}
if (m->trace){
printf("headerFill=%d headerNeed=%d\n",m->headerFill,m->headerNeed);
}
if (m->headerFill < m->headerNeed){
return FALSE;
}
switch (m->payloadLengthLength){
case 0:
m->payloadLength = m->headerBuffer[1]&0x7F;
break;
case 2:
m->payloadLength = (int64)(*((unsigned short*)(&m->headerBuffer[2])));
printf("m->payloadLength (firstGo) is %lld\n",m->payloadLength);
break;
case 8:
m->payloadLength = *((int64*)(&m->headerBuffer[2]));
break;
}
if (m->isMasked){
memcpy(m->maskBytes,m->headerBuffer+(2+m->payloadLengthLength),4);
}
if (m->trace){
printf("established payload length %lld\n",m->payloadLength);
}
m->headerRead = TRUE;
}
if (m->headerRead){
int writeLength = ((available > (m->payloadLength - m->payloadFill)) ?
(int)(m->payloadLength - m->payloadFill) :
available);
if (m->trace){
printf("data offset=%d, writeLength=%d\n",offset,writeLength);
}
if (m->isMasked){
dumpbuffer(data,writeLength);
for (int i=0; i<writeLength; i++){
int d = data[offset+i]&0xff;
int maskingByte = m->maskBytes[m->maskModulus]&0xff;
int u = d^maskingByte;
/* System.out.printf("data[%d]=0x%x m=0x%02x u=0x%02x\n",i,d,maskingByte,u); */
writeByteToBigBuffer(m->payloadStream,u);
m->maskModulus++;
if (m->maskModulus == 4){
m->maskModulus = 0;
}
}
} else{
writeToBigBuffer(m->payloadStream,data+offset,writeLength);
}
if (m->trace){
printf("writeLength=%d payloadFill=%lld\n",writeLength,m->payloadFill);
}
offset += writeLength;
available -= writeLength;
m->payloadFill = m->payloadFill + ((int64)writeLength);
if (m->trace){
printf("payloadFill=%lld payloadLength=%lld\n",m->payloadFill,m->payloadLength);
}
if (m->payloadFill == m->payloadLength){
if (m->trace){
printf("should enqueue offset=%d avail=%d\n",offset,available);
}
if (m->currentMessage == NULL){
m->currentMessage = makeMessage(OPCODE_UNKNOWN,NULL);
}
/* in the follwing 3 lines ownership of the big buffer goes to the new frame */
addWSFrame(m->currentMessage,makeFrame(m->flagAndOpcodeByte,NULL,m->payloadStream->data,m->payloadStream->pos));
freeBigBuffer(m->payloadStream,FALSE);
m->payloadStream = makeBigBuffer(256,NULL);
if (m->fin){
if (shouldClose != FALSE) {
wsSession->closeRequested = TRUE;
wsMessageClose((HttpConversation*)wsSession->conversation, wsSession, m->flagAndOpcodeByte,
m->currentMessage->firstFrame->data, m->currentMessage->firstFrame->dataLength);
}
enqueueInputMessage(m,m->currentMessage);
m->currentMessage = NULL;
}
anyMessagesReady = TRUE;
m->headerFill = 0;
m->headerNeed = 0;
m->payloadFill = 0;
m->payloadLength = 0;
m->payloadLengthLength = 0;
m->flagAndOpcodeByte = 0;
m->maskModulus = 0;
m->isMasked = FALSE;
m->headerRead = FALSE;
m->fin = FALSE;
}
}
if (m->trace){
printf("bottom of loop offset=%d avail=%d\n",offset,available);
}
}
return anyMessagesReady;
}
WSMessageHandler *makeWSMessageHandler(void (*h)(WSSession *session,
WSMessage *message)){
printf("makeWSMessageHandler 1\n");
fflush(stdout);
WSMessageHandler *handler = (WSMessageHandler*)safeMalloc31(sizeof(WSMessageHandler),"WSMessageHandler");
printf("makeWSMessageHandler 2\n");
fflush(stdout);
memset(handler,0,sizeof(WSMessageHandler));
handler->onMessage = h;
printf("about to return new messageHandler 0x%p\n",handler);
fflush(stdout);
return handler;
}
WSEndpoint *makeWSEndpoint(int isServerEndpoint,
void (*onOpen)(WSSession *session),
void (*onError)(WSSession *session),
void (*onClose)(WSSession *session)){
WSEndpoint *endpoint = (WSEndpoint*)safeMalloc31(sizeof(WSEndpoint),"WSEndpoint");
endpoint->isServerEndpoint = isServerEndpoint;
endpoint->onOpen = onOpen;
endpoint->onError = onError;
endpoint->onClose = onClose;
return endpoint;
}
WSMessage *getNextMessage(WSReadMachine *machine){
WSMessage *res = machine->messageQueueHead;
if (res != NULL){
machine->messageQueueHead = res->next;
}
return res;
}
#define OUTPUT_STATE_ANY 1
#define OUTPUT_STATE_TEXT_PARTIAL 2
#define OUTPUT_STATE_BINARY_PARTIAL 3
WSSession *makeWSSession(HttpConversation *conversation,
HttpService *service,
char *negotiatedProtocol){
WSSession *session = (WSSession*)safeMalloc31(sizeof(WSSession),"WS Session");
memset(session,0,sizeof(WSSession));
session->conversation = conversation;
session->service = service;
session->readMachine = makeWSReadMachine();
session->isServer = TRUE;
session->wsOutputState = OUTPUT_STATE_ANY;
session->negotiatedProtocol = negotiatedProtocol;
return session;
}
static void wsMessageEnqueue(HttpConversation *conversation,
WSSession *session,
int isLastFrame){
STCBase *stcBase = conversation->server->base;
WorkElementPrefix *prefix = (WorkElementPrefix*)safeMalloc31(sizeof(WorkElementPrefix)+sizeof(HttpWorkElement),"HttpWorkElement and Prefix for WS");
HttpWorkElement *workElement = (HttpWorkElement*)(((char*)prefix)+sizeof(WorkElementPrefix));
memset(prefix,0,sizeof(WorkElementPrefix));
memcpy(prefix->eyecatcher,"WRKELMNT",8);
prefix->payloadCode = HTTP_WS_OUTPUT;
prefix->payloadLength = sizeof(HttpWorkElement);
memset(workElement,0,sizeof(HttpWorkElement));
workElement->conversation = conversation;
int conversionLength = 0;
char *payload = NULL;
int payloadLength = 0;
if (session->isOutputBinary){
payload = session->outputFrameBuffer;
payloadLength = session->outputFramePos;
} else{
int conversationLength = 0;
int reasonCode = 0;
int status = convertCharset(session->outputFrameBuffer,
session->outputFramePos,
session->outputCCSID,
CHARSET_OUTPUT_USE_BUFFER,
&(session->conversionBuffer),
session->outputFrameSize*2,
CCSID_UTF_8,
NULL,
&conversionLength,
&reasonCode);
payload = session->conversionBuffer;
payloadLength = conversionLength;
}
int opcodeAndFlags = ((isLastFrame ? 0x80 : 0x00)|
(session->isOutputBinary ? OPCODE_BINARY_FRAME : OPCODE_TEXT_FRAME));
addNewWSFrame(workElement, session, opcodeAndFlags, payloadLength, payload, isLastFrame);
stcEnqueueWork(stcBase,prefix);
}
static void wsJsonWriteCallback(jsonPrinter *p, char *text, int len){
WSSession *session = (WSSession*)p->customObject;
int remainingSpace = (session->outputFrameSize - session->outputFramePos);
if (len < remainingSpace){
memcpy(session->outputFrameBuffer+session->outputFramePos,text,len);
session->outputFramePos += len;
} else{
memcpy(session->outputFrameBuffer+session->outputFramePos,text,remainingSpace);
wsMessageEnqueue(session->conversation,session,FALSE);
int leftover = len-remainingSpace;
memcpy(session->outputFrameBuffer,text+remainingSpace,leftover);
session->outputFramePos = leftover;
}
}
jsonPrinter *initWSJsonPrinting(WSSession *session, int maxFrameSize){
session->outputFrameSize = maxFrameSize;
session->outputFramePos = 0;
session->outputFrameBuffer = safeMalloc31(maxFrameSize,"WS JSON Frame Buffer");
session->conversionBuffer = safeMalloc31(maxFrameSize*2,"WS JSON Text Conversion Buffer");
session->jp = makeCustomJsonPrinter(wsJsonWriteCallback,
session);
return session->jp;
}
void flushWSJsonPrinting(WSSession *session){
wsMessageEnqueue(session->conversation,session,TRUE);
session->outputFramePos = 0;
}
int wsSessionMoreInput(WSSession *session){
return 0;
}
/******** Request/Response and Header Management ***********/