The Tor Browser: security/nss/cmd/p7content/p7content.c@141e0f1194b1 (annotated)

security/nss/cmd/p7content/p7content.c@141e0f1194b1 (annotated)

security/nss/cmd/p7content/p7content.c

Wed, 31 Dec 2014 07:16:47 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:16:47 +0100
branch: TOR_BUG_9701
changeset 3: 141e0f1194b1
permissions: -rw-r--r--

Revert simplistic fix pending revisit of Mozilla integration attempt.

 /* 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/. */
 /*
  * p7content -- A command to display pkcs7 content.
  */
 #include "nspr.h"
 #include "secutil.h"
 #include "plgetopt.h"
 #include "secpkcs7.h"
 #include "cert.h"
 #include "certdb.h"
 #include "nss.h"
 #include "pk11pub.h"
 #if defined(XP_UNIX)
 #include <unistd.h>
 #endif
 #include <stdio.h>
 #include <string.h>
 #if (defined(XP_WIN) && !defined(WIN32)) || (defined(__sun) && !defined(SVR4))
 extern int fwrite(char *, size_t, size_t, FILE*);
 extern int fprintf(FILE *, char *, ...);
 #endif
 static void
 Usage(char *progName)
 {
     fprintf(stderr,
 	    "Usage:  %s [-d dbdir] [-i input] [-o output]\n",
 	    progName);
     fprintf(stderr,
 	    "%-20s Key/Cert database directory (default is ~/.netscape)\n",
 	    "-d dbdir");
     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 PRBool saw_content;
 static secuPWData  pwdata          = { PW_NONE, 0 };
 static void
 PrintBytes(void *arg, const char *buf, unsigned long len)
 {
     FILE *out;
     out = arg;
     fwrite (buf, len, 1, out);
     saw_content = PR_TRUE;
 }
 /*
  * XXX Someday we may want to do real policy stuff here.  This allows
  * anything to be decrypted, which is okay for a test program but does
  * not set an example of how a real client with a real policy would
  * need to do it.
  */
 static PRBool
 decryption_allowed(SECAlgorithmID *algid, PK11SymKey *key)
 {
     return PR_TRUE;
 }
 int
 DecodeAndPrintFile(FILE *out, PRFileDesc *in, char *progName)
 {
     SECItem derdata;
     SEC_PKCS7ContentInfo *cinfo = NULL;
     SEC_PKCS7DecoderContext *dcx;
     if (SECU_ReadDERFromFile(&derdata, in, PR_FALSE, PR_FALSE)) {
         SECU_PrintError(progName, "error converting der");
 	return -1;
     }
     fprintf(out,
 	    "Content printed between bars (newline added before second bar):");
     fprintf(out, "\n---------------------------------------------\n");
     saw_content = PR_FALSE;
     dcx = SEC_PKCS7DecoderStart(PrintBytes, out, NULL, &pwdata,
 				NULL, NULL, decryption_allowed);
     if (dcx != NULL) {
 #if 0	/* Test that decoder works when data is really streaming in. */
 	{
 	    unsigned long i;
 	    for (i = 0; i < derdata.len; i++)
 		SEC_PKCS7DecoderUpdate(dcx, derdata.data + i, 1);
 	}
 #else
 	SEC_PKCS7DecoderUpdate(dcx, (char *)derdata.data, derdata.len);
 #endif
 	cinfo = SEC_PKCS7DecoderFinish(dcx);
     }
     fprintf(out, "\n---------------------------------------------\n");
     if (cinfo == NULL)
 	return -1;
     fprintf(out, "Content was%s encrypted.\n",
 	    SEC_PKCS7ContentIsEncrypted(cinfo) ? "" : " not");
     if (SEC_PKCS7ContentIsSigned(cinfo)) {
 	char *signer_cname, *signer_ename;
 	SECItem *signing_time;
 	if (saw_content) {
 	    fprintf(out, "Signature is ");
 	    PORT_SetError(0);
 	    if (SEC_PKCS7VerifySignature(cinfo, certUsageEmailSigner, PR_FALSE))
 		fprintf(out, "valid.\n");
 	    else
 		fprintf(out, "invalid (Reason: %s).\n",
 			SECU_Strerror(PORT_GetError()));
 	} else {
 	    fprintf(out,
 		    "Content is detached; signature cannot be verified.\n");
 	}
 	signer_cname = SEC_PKCS7GetSignerCommonName(cinfo);
 	if (signer_cname != NULL) {
 	    fprintf(out, "The signer's common name is %s\n", signer_cname);
 	    PORT_Free(signer_cname);
 	} else {
 	    fprintf(out, "No signer common name.\n");
 	}
 	signer_ename = SEC_PKCS7GetSignerEmailAddress(cinfo);
 	if (signer_ename != NULL) {
 	    fprintf(out, "The signer's email address is %s\n", signer_ename);
 	    PORT_Free(signer_ename);
 	} else {
 	    fprintf(out, "No signer email address.\n");
 	}
 	signing_time = SEC_PKCS7GetSigningTime(cinfo);
 	if (signing_time != NULL) {
 	    SECU_PrintTimeChoice(out, signing_time, "Signing time", 0);
 	} else {
 	    fprintf(out, "No signing time included.\n");
 	}
     } else {
 	fprintf(out, "Content was not signed.\n");
     }
     fprintf(out, "There were%s certs or crls included.\n",
 	    SEC_PKCS7ContainsCertsOrCrls(cinfo) ? "" : " no");
     SEC_PKCS7DestroyContentInfo(cinfo);
     return 0;
 }
 /*
  * Print the contents of a PKCS7 message, indicating signatures, etc.
  */
 int
 main(int argc, char **argv)
 {
     char *progName;
     FILE *outFile;
     PRFileDesc *inFile;
     PLOptState *optstate;
     PLOptStatus status;
     SECStatus rv;
     progName = strrchr(argv[0], '/');
     progName = progName ? progName+1 : argv[0];
     inFile = NULL;
     outFile = NULL;
     /*
      * Parse command line arguments
      */
     optstate = PL_CreateOptState(argc, argv, "d:i:o:p:f:");
     while ((status = PL_GetNextOpt(optstate)) == PL_OPT_OK) {
 	switch (optstate->option) {
 	  case 'd':
 	    SECU_ConfigDirectory(optstate->value);
 	    break;
 	  case 'i':
 	    inFile = PR_Open(optstate->value, PR_RDONLY, 0);
 	    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 'p':
             pwdata.source = PW_PLAINTEXT;
             pwdata.data = PORT_Strdup (optstate->value);
             break;
           case 'f':
             pwdata.source = PW_FROMFILE;
             pwdata.data = PORT_Strdup (optstate->value);
             break;
 	  default:
 	    Usage(progName);
 	    break;
 	}
     }
     if (status == PL_OPT_BAD)
 	Usage(progName);
     if (!inFile) inFile = PR_STDIN;
     if (!outFile) outFile = stdout;
     /* Call the initialization routines */
     PR_Init(PR_SYSTEM_THREAD, PR_PRIORITY_NORMAL, 1);
     rv = NSS_Init(SECU_ConfigDirectory(NULL));
     if (rv != SECSuccess) {
 	SECU_PrintPRandOSError(progName);
 	return -1;
     }
     PK11_SetPasswordFunc(SECU_GetModulePassword);
     if (DecodeAndPrintFile(outFile, inFile, progName)) {
 	SECU_PrintError(progName, "problem decoding data");
 	return -1;
     }
     if (NSS_Shutdown() != SECSuccess) {
         exit(1);
     }
     return 0;
 }

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security/nss/cmd/p7content/p7content.c@141e0f1194b1 (annotated)

security/nss/cmd/p7content/p7content.c