digest.c
上传用户:lyxiangda
上传日期:2007-01-12
资源大小:3042k
文件大小:6k
- /*
- * The contents of this file are subject to the Mozilla Public
- * License Version 1.1 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code is the Netscape security libraries.
- *
- * The Initial Developer of the Original Code is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1994-2000 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- */
- #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 ofn",
- "-t type");
- fprintf(stderr, "%-20s ", "");
- for (htype = HASH_AlgNULL + 1; htype < HASH_AlgTOTAL; htype++) {
- fprintf(stderr, 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;
- int opt;
- 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 %sn",
- 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 readingn",
- progName, optstate->value);
- return -1;
- }
- break;
- case 'o':
- outFile = fopen(optstate->value, "w");
- if (!outFile) {
- fprintf(stderr, "%s: unable to open "%s" for writingn",
- 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 typen", progName);
- Usage(progName);
- }
- if (DigestFile(outFile, inFile, hashOID)) {
- fprintf(stderr, "%s: problem digesting data (%s)n",
- progName, SECU_Strerror(PORT_GetError()));
- return -1;
- }
- return 0;
- }