The Tor Browser: security/nss/cmd/digest/digest.c@6474c204b198 (annotated)

security/nss/cmd/digest/digest.c@6474c204b198 (annotated)

security/nss/cmd/digest/digest.c

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "secutil.h"
 #include "pk11func.h"
 #include "secoid.h"
 #if defined(XP_WIN) || (defined(__sun) && !defined(SVR4))
 #if !defined(WIN32)
 extern int fread(char *, size_t, size_t, FILE*);
 extern int fwrite(char *, size_t, size_t, FILE*);
 extern int fprintf(FILE *, char *, ...);
 #endif
 #endif
 #include "plgetopt.h"
 static SECOidData *
 HashTypeToOID(HASH_HashType hashtype)
 {
     SECOidTag hashtag;
     if (hashtype <= HASH_AlgNULL || hashtype >= HASH_AlgTOTAL)
 	return NULL;
     switch (hashtype) {
       case HASH_AlgMD2:
 	hashtag = SEC_OID_MD2;
 	break;
       case HASH_AlgMD5:
 	hashtag = SEC_OID_MD5;
 	break;
       case HASH_AlgSHA1:
 	hashtag = SEC_OID_SHA1;
 	break;
       default:
 	fprintf(stderr, "A new hash type has been added to HASH_HashType.\n");
 	fprintf(stderr, "This program needs to be updated!\n");
 	return NULL;
     }
     return SECOID_FindOIDByTag(hashtag);
 }
 static SECOidData *
 HashNameToOID(const char *hashName)
 {
     HASH_HashType htype;
     SECOidData *hashOID;
     for (htype = HASH_AlgNULL + 1; htype < HASH_AlgTOTAL; htype++) {
 	hashOID = HashTypeToOID(htype);
 	if (PORT_Strcasecmp(hashName, hashOID->desc) == 0)
 	    break;
     }
     if (htype == HASH_AlgTOTAL)
 	return NULL;
     return hashOID;
 }
 static void
 Usage(char *progName)
 {
     HASH_HashType htype;
     fprintf(stderr,
 	    "Usage:  %s -t type [-i input] [-o output]\n",
 	    progName);
     fprintf(stderr, "%-20s Specify the digest method (must be one of\n",
 	    "-t type");
     fprintf(stderr, "%-20s ", "");
     for (htype = HASH_AlgNULL + 1; htype < HASH_AlgTOTAL; htype++) {
 	fprintf(stderr, "%s", HashTypeToOID(htype)->desc);
 	if (htype == (HASH_AlgTOTAL - 2))
 	    fprintf(stderr, " or ");
 	else if (htype != (HASH_AlgTOTAL - 1))
 	    fprintf(stderr, ", ");
     }
     fprintf(stderr, " (case ignored))\n");
     fprintf(stderr, "%-20s Define an input file to use (default is stdin)\n",
 	    "-i input");
     fprintf(stderr, "%-20s Define an output file to use (default is stdout)\n",
 	    "-o output");
     exit(-1);
 }
 static int
 DigestFile(FILE *outFile, FILE *inFile, SECOidData *hashOID)
 {
     int nb;
     unsigned char ibuf[4096], digest[32];
     PK11Context *hashcx;
     unsigned int len;
     SECStatus rv;
     hashcx = PK11_CreateDigestContext(hashOID->offset);
     if (hashcx == NULL) {
 	return -1;
     }
     PK11_DigestBegin(hashcx);
     for (;;) {
 	if (feof(inFile)) break;
 	nb = fread(ibuf, 1, sizeof(ibuf), inFile);
 	if (nb != sizeof(ibuf)) {
 	    if (nb == 0) {
 		if (ferror(inFile)) {
 		    PORT_SetError(SEC_ERROR_IO);
 		    PK11_DestroyContext(hashcx,PR_TRUE);
 		    return -1;
 		}
 		/* eof */
 		break;
 	    }
 	}
 	rv = PK11_DigestOp(hashcx, ibuf, nb);
 	if (rv != SECSuccess) {
 	   PK11_DestroyContext(hashcx, PR_TRUE);
 	   return -1;
 	}
     }
     rv = PK11_DigestFinal(hashcx, digest, &len, 32);
     PK11_DestroyContext(hashcx, PR_TRUE);
     if (rv != SECSuccess) return -1;
     nb = fwrite(digest, 1, len, outFile);
     if (nb != len) {
 	PORT_SetError(SEC_ERROR_IO);
 	return -1;
     }
     return 0;
 }
 #include "nss.h"
 int
 main(int argc, char **argv)
 {
     char *progName;
     FILE *inFile, *outFile;
     char *hashName;
     SECOidData *hashOID;
     PLOptState *optstate;
     PLOptStatus status;
     SECStatus   rv;
     progName = strrchr(argv[0], '/');
     progName = progName ? progName+1 : argv[0];
     inFile = NULL;
     outFile = NULL;
     hashName = NULL;
     rv = NSS_Init("/tmp");
     if (rv != SECSuccess) {
     	fprintf(stderr, "%s: NSS_Init failed in directory %s\n",
 	        progName, "/tmp");
         return -1;
     }
     /*
      * Parse command line arguments
      */
     optstate = PL_CreateOptState(argc, argv, "t:i:o:");
     while ((status = PL_GetNextOpt(optstate)) == PL_OPT_OK) {
 	switch (optstate->option) {
 	  case '?':
 	    Usage(progName);
 	    break;
 	  case 'i':
 	    inFile = fopen(optstate->value, "r");
 	    if (!inFile) {
 		fprintf(stderr, "%s: unable to open \"%s\" for reading\n",
 			progName, optstate->value);
 		return -1;
 	    }
 	    break;
 	  case 'o':
 	    outFile = fopen(optstate->value, "w");
 	    if (!outFile) {
 		fprintf(stderr, "%s: unable to open \"%s\" for writing\n",
 			progName, optstate->value);
 		return -1;
 	    }
 	    break;
 	  case 't':
 	    hashName = strdup(optstate->value);
 	    break;
 	}
     }
     if (!hashName) Usage(progName);
     if (!inFile) inFile = stdin;
     if (!outFile) outFile = stdout;
     hashOID = HashNameToOID(hashName);
     if (hashOID == NULL) {
 	fprintf(stderr, "%s: invalid digest type\n", progName);
 	Usage(progName);
     }
     if (DigestFile(outFile, inFile, hashOID)) {
 	fprintf(stderr, "%s: problem digesting data (%s)\n",
 		progName, SECU_Strerror(PORT_GetError()));
 	return -1;
     }
     if (NSS_Shutdown() != SECSuccess) {
         exit(1);
     }
     return 0;
 }

The Tor Browser / annotate

security/nss/cmd/digest/digest.c@6474c204b198 (annotated)

security/nss/cmd/digest/digest.c