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tutorial_Common.c
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tutorial_Common.c
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/*
* Copyright (c) 2014-2015, Xerox Corporation (Xerox)and Palo Alto Research Center (PARC)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Patent rights are not granted under this agreement. Patent rights are
* available under FRAND terms.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL XEROX or PARC BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @author Alan Walendowski, Palo Alto Research Center (Xerox PARC)
* @copyright 2014-2015, Xerox Corporation (Xerox)and Palo Alto Research Center (PARC). All rights reserved.
*/
#include <stdio.h>
#include "tutorial_Common.h"
#include "tutorial_About.h"
#include <LongBow/runtime.h>
#include <ccnx/common/ccnx_NameSegmentNumber.h>
#include <parc/security/parc_Security.h>
#include <parc/security/parc_PublicKeySignerPkcs12Store.h>
#include <parc/security/parc_IdentityFile.h>
/**
* The CCNx Name prefix we'll use for the tutorial.
*/
const char *tutorialCommon_DomainPrefix = "lci:/ccnx/tutorial";
/**
* The size of a chunk. We break CCNx Content payloads up into pieces of this size.
* 1200 was chosen as a size that should prevent IP fragmentation of CCNx ContentObject Messages.
*/
const uint32_t tutorialCommon_ChunkSize = 1200;
/**
* The string we use for the 'fetch' command.
*/
const char *tutorialCommon_CommandFetch = "fetch";
/**
* The string we use for the 'list' command.
*/
const char *tutorialCommon_CommandList = "list";
PARCIdentity *
tutorialCommon_CreateAndGetIdentity(const char *keystoreName, const char *keystorePassword, const char *subjectName)
{
parcSecurity_Init();
unsigned int keyLength = 1024;
unsigned int validityDays = 30;
bool success = parcPublicKeySignerPkcs12Store_CreateFile(keystoreName, keystorePassword, subjectName, keyLength, validityDays);
assertTrue(success,
"parcPublicKeySignerPkcs12Store_CreateFile('%s', '%s', '%s', %d, %d) failed.",
keystoreName, keystorePassword, subjectName, keyLength, validityDays);
PARCIdentityFile *identityFile = parcIdentityFile_Create(keystoreName, keystorePassword);
PARCIdentity *result = parcIdentity_Create(identityFile, PARCIdentityFileAsPARCIdentity);
parcIdentityFile_Release(&identityFile);
parcSecurity_Fini();
return result;
}
CCNxPortalFactory *
tutorialCommon_SetupPortalFactory(const char *keystoreName, const char *keystorePassword, const char *subjectName)
{
PARCIdentity *identity = tutorialCommon_CreateAndGetIdentity(keystoreName, keystorePassword, subjectName);
CCNxPortalFactory *result = ccnxPortalFactory_Create(identity);
parcIdentity_Release(&identity);
return result;
}
uint64_t
tutorialCommon_GetChunkNumberFromName(const CCNxName *name)
{
size_t numberOfSegmentsInName = ccnxName_GetSegmentCount(name);
CCNxNameSegment *chunkNumberSegment = ccnxName_GetSegment(name, numberOfSegmentsInName - 1);
assertTrue(ccnxNameSegment_GetType(chunkNumberSegment) == CCNxNameLabelType_CHUNK,
"Last segment is the wrong type, expected CCNxNameLabelType %02X got %02X",
CCNxNameLabelType_CHUNK,
ccnxNameSegment_GetType(chunkNumberSegment))
{
ccnxName_Display(name, 0); // This executes only if the enclosing assertion fails
}
return ccnxNameSegmentNumber_Value(chunkNumberSegment);
}
char *
tutorialCommon_CreateFileNameFromName(const CCNxName *name)
{
// For the Tutorial, the second to last NameSegment is the filename.
CCNxNameSegment *fileNameSegment = ccnxName_GetSegment(name, ccnxName_GetSegmentCount(name) - 2); // '-2' because we want the second to last segment
assertTrue(ccnxNameSegment_GetType(fileNameSegment) == CCNxNameLabelType_NAME,
"Last segment is the wrong type, expected CCNxNameLabelType %02X got %02X",
CCNxNameLabelType_NAME,
ccnxNameSegment_GetType(fileNameSegment))
{
ccnxName_Display(name, 0); // This executes only if the enclosing assertion fails
}
return ccnxNameSegment_ToString(fileNameSegment); // This memory must be freed by the caller.
}
char *
tutorialCommon_CreateCommandStringFromName(const CCNxName *name, const CCNxName *domainPrefix)
{
// For the Tutorial, the NameSegment immediately following the domain prefix contains the command.
CCNxNameSegment *commandSegment = ccnxName_GetSegment(name, ccnxName_GetSegmentCount(domainPrefix));
assertTrue(ccnxNameSegment_GetType(commandSegment) == CCNxNameLabelType_NAME,
"Last segment is the wrong type, expected CCNxNameLabelType %02X got %02X",
CCNxNameLabelType_NAME,
ccnxNameSegment_GetType(commandSegment))
{
ccnxName_Display(name, 0); // This executes only if the enclosing assertion fails
}
return ccnxNameSegment_ToString(commandSegment); // This memory must be freed by the caller.
}
int
tutorialCommon_processCommandLineArguments(int argc, char **argv,
int *commandArgCount, char **commandArgs,
bool *needToShowUsage, bool *shouldExit)
{
int status = EXIT_SUCCESS;
*commandArgCount = 0;
*needToShowUsage = false;
for (size_t i = 1; i < argc; i++) {
char *arg = argv[i];
if (arg[0] == '-') {
switch (arg[1]) {
case 'h': {
*needToShowUsage = true;
*shouldExit = true;
break;
}
case 'v': {
printf("%s version: %s\n", argv[0], tutorialAbout_Version());
*shouldExit = true;
break;
}
default: { // Unexpected '-' option.
*needToShowUsage = true;
*shouldExit = true;
status = EXIT_FAILURE;
break;
}
}
} else {
// Not a '-' option, so save it as a command argument.
commandArgs[(*commandArgCount)++] = arg;
}
}
return status;
}