| ︙ | | |
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
34
35
36
37
38
39
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43
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50
51
52
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60
61
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64
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73
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
|
int flags; /* Chan config flags */
int watchMask; /* Current WatchProc mask */
int mode; /* Current mode of parent channel */
int format; /* Output format */
Tcl_Interp *interp; /* Current interpreter */
EVP_MD_CTX *ctx; /* MD Context */
HMAC_CTX *hctx; /* HMAC Context */
} DigestState;
/*
*-------------------------------------------------------------------
*
* DigestFree --
*
* This procedure removes a digest state structure
*
* Returns:
* Nothing
*
* Side effects:
* Removes structure
*
*-------------------------------------------------------------------
*/
void DigestFree (DigestState *statePtr) {
if (statePtr == (DigestState *) NULL) return;
if (statePtr->ctx != (EVP_MD_CTX *) NULL) {
EVP_MD_CTX_free(statePtr->ctx);
}
if (statePtr->hctx != (HMAC_CTX *) NULL) {
HMAC_CTX_free(statePtr->hctx);
}
ckfree(statePtr);
}
/*******************************************************************/
/*
*-------------------------------------------------------------------
*
* DigestFile --
|
| ︙ | | |
104
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111
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132
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148
149
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153
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+
-
-
-
-
-
-
-
-
+
+
+
+
+
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+
+
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+
|
Tcl_AppendResult(interp, "Initialize digest failed: ", REASON(), NULL);
goto error;
}
/* Read file data and update hash function */
while (!Tcl_Eof(chan)) {
int len = Tcl_ReadRaw(chan, (char *) buf, BUFFER_SIZE);
if (len > 0) {
if (keyObj == NULL) {
res = EVP_DigestUpdate(ctx, &buf, (size_t) len);
} else {
res = HMAC_Update(hctx, &buf[0], (size_t) len);
}
if (len > 0 && !res) {
Tcl_AppendResult(interp, "Update digest failed: ", REASON(), NULL);
goto error;
if (keyObj == NULL) {
res = EVP_DigestUpdate(ctx, &buf, (size_t) len);
} else {
res = HMAC_Update(hctx, &buf[0], (size_t) len);
}
if (!res) {
Tcl_AppendResult(interp, "Update digest failed: ", REASON(), NULL);
res = TCL_ERROR;
goto error;
}
}
}
/* Close channel */
if (Tcl_Close(interp, chan) == TCL_ERROR) {
chan = (Tcl_Channel) NULL;
goto error;
|
| ︙ | | |
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
|
230
231
232
233
234
235
236
237
238
239
240
241
242
243
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
|
}
return 0;
}
/*
*-------------------------------------------------------------------
*
* DigestFree --
*
* This procedure removes a digest state structure
*
* Returns:
* Nothing
*
* Side effects:
* Removes structure
*
*-------------------------------------------------------------------
*/
void DigestFree (DigestState *statePtr) {
if (statePtr == (DigestState *) NULL) return;
if (statePtr->ctx != NULL) {
EVP_MD_CTX_free(statePtr->ctx);
}
ckfree(statePtr);
}
/*
*-------------------------------------------------------------------
*
|
| ︙ | | |
280
281
282
283
284
285
286
287
288
289
290
291
292
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317
318
319
320
321
322
323
324
325
326
327
|
287
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289
290
291
292
293
294
295
296
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299
300
301
302
303
304
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308
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311
312
313
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315
316
317
318
319
320
321
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333
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339
340
341
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343
|
-
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-
-
+
+
+
+
+
+
-
-
+
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+
|
* Read data from transform and write to buf
*
*----------------------------------------------------------------------
*/
int DigestInputProc(ClientData clientData, char *buf, int toRead, int *errorCodePtr) {
DigestState *statePtr = (DigestState *) clientData;
Tcl_Channel parent;
int read;
int read, res;
*errorCodePtr = 0;
if (toRead <= 0 || statePtr->self == (Tcl_Channel) NULL) {
return 0;
}
/* Get bytes from underlying channel */
parent = Tcl_GetStackedChannel(statePtr->self);
read = Tcl_ReadRaw(parent, buf, toRead);
/* Add to message digest */
if (read > 0) {
/* OK */
if (!EVP_DigestUpdate(statePtr->ctx, buf, read)) {
if (statePtr->ctx != NULL) {
res = EVP_DigestUpdate(statePtr->ctx, buf, (size_t) read);
} else {
res = HMAC_Update(statePtr->hctx, buf, (size_t) read);
}
if (!res) {
Tcl_SetChannelError(statePtr->self, Tcl_ObjPrintf("Digest update failed: %s", REASON()));
*errorCodePtr = EINVAL;
return -1;
}
*errorCodePtr = EAGAIN;
read = -1;
} else if (read < 0) {
/* Error */
*errorCodePtr = Tcl_GetErrno();
} else if (!(statePtr->flags & 0x10)) {
/* EOF */
*errorCodePtr = 0;
unsigned char md_buf[EVP_MAX_MD_SIZE];
unsigned int md_len = 0;
/* Get message digest */
if (!EVP_DigestFinal_ex(statePtr->ctx, md_buf, &md_len)) {
/* Finalize hash function and calculate message digest */
if (statePtr->ctx != NULL) {
res = EVP_DigestFinal_ex(statePtr->ctx, md_buf, &md_len);
} else {
res = HMAC_Final(statePtr->hctx, md_buf, &md_len);
}
if (!res) {
*errorCodePtr = EINVAL;
/* Write message digest to output channel as byte array or hex string */
} else if (md_len > 0) {
if (statePtr->format == BIN_FORMAT) {
read = md_len;
memcpy(buf, md_buf, read);
|
| ︙ | | |
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
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661
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663
664
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666
667
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669
670
671
672
673
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675
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677
678
679
680
681
682
|
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
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648
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651
652
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664
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673
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688
689
690
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695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
|
-
-
+
+
+
-
+
+
-
+
-
-
+
-
+
+
+
+
+
+
+
+
-
+
+
+
+
+
+
+
+
+
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
-
-
+
-
-
|
*
* Side effects:
* Adds transform to channel and sets result to channel name or error message.
*
*----------------------------------------------------------------------
*/
static int
DigestChannel(Tcl_Interp *interp, const char *channel, const EVP_MD *md, int format) {
int mode; /* OR-ed combination of TCL_READABLE and TCL_WRITABLE */
DigestChannel(Tcl_Interp *interp, const char *channel, const EVP_MD *md, int format,
Tcl_Obj *keyObj) {
int res, mode; /* OR-ed combination of TCL_READABLE and TCL_WRITABLE */
Tcl_Channel chan;
EVP_MD_CTX *ctx;
/* Create internal storage structures */
/* Create internal storage structure */
ctx = EVP_MD_CTX_new();
if (ctx != NULL && statePtr != NULL) {
if (statePtr != NULL) {
memset(statePtr, 0, sizeof(DigestState));
statePtr->self = chan; /* This socket channel */
statePtr->timer = (Tcl_TimerToken) NULL; /* Timer to flush data */
statePtr->flags = 0; /* Chan config flags */
statePtr->watchMask = 0; /* Current WatchProc mask */
statePtr->mode = mode; /* Current mode of parent channel */
statePtr->format = format; /* Output format */
statePtr->interp = interp; /* Current interpreter */
statePtr->ctx = ctx; /* SSL Context */
statePtr->ctx = ctx; /* MD Context */
statePtr->hctx = hctx; /* HMAC Context */
statePtr->mac = NULL; /* MAC Context */
} else {
Tcl_AppendResult(interp, "Initialize digest error: memory allocation failure", (char *) NULL);
return TCL_ERROR;
}
/* Create message digest context */
if (keyObj == NULL) {
EVP_MD_CTX_free(ctx);
ctx = EVP_MD_CTX_new();
} else {
hctx = HMAC_CTX_new();
}
if (ctx != NULL || hctx != NULL) {
statePtr->ctx = ctx;
statePtr->hctx = hctx;
} else {
Tcl_AppendResult(interp, "Create digest context failed: ", REASON(), NULL);
DigestFree(statePtr);
return TCL_ERROR;
}
/* Initialize digest */
#if OPENSSL_VERSION_NUMBER < 0x30000000L
if (!EVP_DigestInit_ex(ctx, md, NULL))
#else
if (!EVP_DigestInit_ex2(ctx, md, NULL))
#endif
/* Initialize hash function */
if (keyObj == NULL) {
res = EVP_DigestInit_ex(ctx, md, NULL);
} else {
int key_len;
unsigned char *key = Tcl_GetByteArrayFromObj(keyObj, &key_len);
res = HMAC_Init_ex(hctx, (const void *) key, key_len, md, NULL);
}
if (!res) {
{
Tcl_AppendResult(interp, "Initialize digest error: ", REASON(), (char *) NULL);
EVP_MD_CTX_free(ctx);
EVP_MD_CTX_free(ctx);
|
| ︙ | | |
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
|
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
|
-
+
-
+
|
data = Tcl_GetByteArrayFromObj(objv[1], &len);
if (data == NULL || len == 0) {
Tcl_SetResult(interp, "No data", NULL);
return TCL_ERROR;
}
/* Calculate digest based on hash function */
if (keyObj == NULL) {
if (keyObj == (Tcl_Obj *) NULL) {
res = EVP_Digest(data, (size_t) len, md_buf, &md_len, md, NULL);
} else {
unsigned char *key, *hmac;
unsigned char *key, *hmac = NULL;
int key_len;
key = Tcl_GetByteArrayFromObj(keyObj, &key_len);
hmac = HMAC(md, (const void *) key, key_len, (const unsigned char *) data,
(size_t) len, md_buf, &md_len);
res = (hmac != NULL);
}
|
| ︙ | | |
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
|
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
|
-
+
|
* Side effects:
* Sets result to message digest or error message
*
*-------------------------------------------------------------------
*/
static int
DigestObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
int idx, len, format = HEX_FORMAT, key_len = 0, data_len = 0;
int idx, len, format = HEX_FORMAT, key_len = 0, data_len = 0, res = TCL_OK;
const char *digestname, *channel = NULL;
Tcl_Obj *dataObj = NULL, *fileObj = NULL, *keyObj = NULL;
unsigned char *key = NULL;
const EVP_MD *md;
Tcl_ResetResult(interp);
|
| ︙ | | |
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
|
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
|
-
+
-
+
-
+
-
-
-
+
|
/* If no option for last arg, then its the data */
if (idx < objc) {
dataObj = objv[idx];
}
/* Calc digest on file, stacked channel, or data blob */
if (fileObj != NULL) {
return DigestFile(interp, fileObj, md, format, keyObj);
res = DigestFile(interp, fileObj, md, format, keyObj);
} else if (channel != NULL) {
return DigestChannel(interp, channel, md, format);
res = DigestChannel(interp, channel, md, format, keyObj);
} else if (dataObj != NULL) {
Tcl_Obj *objs[2];
objs[0] = NULL;
objs[1] = dataObj;
return DigestHashFunction(interp, 2, objs, md, format, keyObj);
res = DigestHashFunction(interp, 2, objs, md, format, keyObj);
}
Tcl_AppendResult(interp, "No data specified.", NULL);
return TCL_ERROR;
|
| ︙ | | |