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libgourou/utils/adept_loan_mgt.cpp

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/*
Copyright (c) 2022, Grégory Soutadé
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.
* Neither the name of the copyright holder nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS AND CONTRIBUTORS 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.
*/
#include <getopt.h>
#include <iostream>
#include <algorithm>
#define _XOPEN_SOURCE 700
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <libgen.h>
#include <time.h>
#include <libgourou.h>
#include <libgourou_common.h>
#include "drmprocessorclientimpl.h"
#include "utils_common.h"
#define MAX_SIZE_BOOK_NAME 30
static char* adeptDir = 0;
static const char* deviceFile = "device.xml";
static const char* activationFile = "activation.xml";
static const char* devicekeyFile = "devicesalt";
static bool list = false;
static const char* returnID = 0;
static const char* deleteID = 0;
struct Loan
{
std::string id;
std::string operatorURL;
std::string validity;
std::string bookName;
std::string path;
};
class LoanMGT
{
public:
~LoanMGT()
{
for (const auto& kv : loanedBooks)
delete kv.second;
}
int run()
{
int ret = 0;
try
{
DRMProcessorClientImpl client;
gourou::DRMProcessor processor(&client, deviceFile, activationFile, devicekeyFile);
loadLoanedBooks();
if (list)
displayLoanList();
else if (returnID)
returnBook(processor);
else if (deleteID)
deleteLoan();
} catch(std::exception& e)
{
std::cout << e.what() << std::endl;
ret = 1;
}
return ret;
}
private:
void loadLoanedBooks()
{
DIR *dp;
struct dirent *ep;
int entryLen;
struct Loan* loan;
char * res;
std::string loanDir = std::string(adeptDir) + std::string("/") + LOANS_DIR;
if (!fileExists(loanDir.c_str()))
return;
dp = opendir (loanDir.c_str());
if(!dp)
EXCEPTION(gourou::USER_INVALID_INPUT, "Cannot read directory " << loanDir);
while ((ep = readdir (dp)))
{
if (ep->d_type != DT_LNK &&
ep->d_type != DT_REG)
continue;
entryLen = strlen(ep->d_name);
if (entryLen <= 4 ||
ep->d_name[entryLen-4] != '.' ||
ep->d_name[entryLen-3] != 'x' ||
ep->d_name[entryLen-2] != 'm' ||
ep->d_name[entryLen-1] != 'l')
continue;
std::string id = std::string(ep->d_name, entryLen-4);
loan = new Loan;
loan->path = loanDir + std::string("/") + ep->d_name;
pugi::xml_document xmlDoc;
pugi::xml_node node;
if (!xmlDoc.load_file(loan->path.c_str(), pugi::parse_ws_pcdata_single|pugi::parse_escapes, pugi::encoding_utf8))
{
std::cout << "Invalid loan entry " << loan->path << std::endl;
goto error;
}
// id
node = xmlDoc.select_node("//id").node();
if (!node)
{
std::cout << "Invalid loan entry " << ep->d_name << ", no id element" << std::endl;
goto error;
}
loan->id = node.first_child().value();
// operatorURL
node = xmlDoc.select_node("//operatorURL").node();
if (!node)
{
std::cout << "Invalid loan entry " << ep->d_name << ", no operatorURL element" << std::endl;
goto error;
}
loan->operatorURL = node.first_child().value();
// validity
node = xmlDoc.select_node("//validity").node();
if (!node)
{
std::cout << "Invalid loan entry " << ep->d_name << ", no validity element" << std::endl;
goto error;
}
loan->validity = node.first_child().value();
// bookName
node = xmlDoc.select_node("//name").node();
if (!node)
{
std::cout << "Invalid loan entry " << ep->d_name << ", no name element" << std::endl;
goto error;
}
loan->bookName = node.first_child().value();
struct tm tm;
res = strptime(loan->validity.c_str(), "%Y-%m-%dT%H:%M:%S%Z", &tm);
if (*res == 0)
{
if (mktime(&tm) <= time(NULL))
loan->validity = " (Expired)";
}
else
{
std::cout << "Unable to parse validity timestamp :" << loan->validity << std::endl;
loan->validity = " (Unknown)";
}
loanedBooks[id] = loan;
continue;
error:
if (loan)
delete loan;
}
closedir (dp);
}
void displayLoanList()
{
if (!loanedBooks.size())
{
std::cout << "Any book loaned" << std::endl;
return;
}
struct Loan* loan;
unsigned int maxSizeBookName=0;
// Compute max size
for (const auto& kv : loanedBooks)
{
loan = kv.second;
if (loan->bookName.size() > maxSizeBookName)
maxSizeBookName = loan->bookName.size();
}
if (maxSizeBookName > MAX_SIZE_BOOK_NAME)
maxSizeBookName = MAX_SIZE_BOOK_NAME;
else if ((maxSizeBookName % 2))
maxSizeBookName++;
// std::cout << " ID Book Expiration" << std::endl;
// std::cout << "------------------------------" << std::endl;
int fillID, fillBookName, fillExpiration=(20 - 10)/2;
fillID = (ID_HASH_SIZE - 2) / 2;
fillBookName = (maxSizeBookName - 4) / 2;
std::cout.width (fillID);
std::cout << "";
std::cout << "ID" ;
std::cout.width (fillID);
std::cout << "";
std::cout << " " ;
std::cout.width (fillBookName);
std::cout << "";
std::cout << "Book" ;
std::cout.width (fillBookName);
std::cout << "";
std::cout << " " ;
std::cout.width (fillExpiration);
std::cout << "";
std::cout << "Exipration";
std::cout.width (fillExpiration);
std::cout << "" << std::endl;
std::cout.fill ('-');
std::cout.width (ID_HASH_SIZE + 4 + maxSizeBookName + 4 + 20);
std::cout << "" << std::endl;
std::cout.fill (' ');
std::string bookName;
for (const auto& kv : loanedBooks)
{
loan = kv.second;
std::cout << kv.first;
std::cout << " ";
if (loan->bookName.size() > MAX_SIZE_BOOK_NAME)
bookName = std::string(loan->bookName.c_str(), MAX_SIZE_BOOK_NAME);
else
bookName = loan->bookName;
std::cout << bookName;
std::cout.width (maxSizeBookName - bookName.size());
std::cout << "";
std::cout << " ";
std::cout << loan->validity << std::endl;
}
std::cout << std::endl;
}
void returnBook(gourou::DRMProcessor& processor)
{
struct Loan* loan = loanedBooks[std::string(returnID)];
if (!loan)
{
std::cout << "Error : Loan " << returnID << " doesn't exists" << std::endl;
return;
}
processor.returnLoan(loan->id, loan->operatorURL);
deleteID = returnID;
if (deleteLoan(false))
{
std::cout << "Loan " << returnID << " successfully returned" << std::endl;
}
}
bool deleteLoan(bool displayResult=true)
{
struct Loan* loan = loanedBooks[std::string(deleteID)];
if (!loan)
{
std::cout << "Error : Loan " << deleteID << " doesn't exists" << std::endl;
return false;
}
if (unlink(loan->path.c_str()))
{
std::cout << "Error : Cannot delete " << loan->path << std::endl;
return false;
}
else if (displayResult)
{
std::cout << "Loan " << deleteID << " deleted" << std::endl;
}
return true;
}
std::map<std::string, struct Loan*> loanedBooks;
};
static void usage(const char* cmd)
{
std::cout << "Manage loaned books" << std::endl;
std::cout << "Usage: " << basename((char*)cmd) << " [(-D|--adept-directory) dir] (-l|--list)|(-d|--delete loanID)|(-R|--return loanID) [(-v|--verbose)] [(-h|--help)]" << std::endl << std::endl;
std::cout << " " << "-D|--adept-directory" << "\t" << ".adept directory that must contains device.xml, activation.xml and devicesalt" << std::endl;
std::cout << " " << "-l|--list" << "\t\t" << "List all loaned books" << std::endl;
std::cout << " " << "-r|--return" << "\t\t" << "Return a loaned book" << std::endl;
std::cout << " " << "-d|--delete" << "\t\t" << "Delete a loan entry without returning it" << std::endl;
std::cout << " " << "-v|--verbose" << "\t\t" << "Increase verbosity, can be set multiple times" << std::endl;
std::cout << " " << "-V|--version" << "\t\t" << "Display libgourou version" << std::endl;
std::cout << " " << "-h|--help" << "\t\t" << "This help" << std::endl;
std::cout << std::endl;
std::cout << "ADEPT directory is optional. If not set, it's looked into :" << std::endl;
std::cout << " * Current directory" << std::endl;
std::cout << " * .adept" << std::endl;
std::cout << " * adobe-digital-editions directory" << std::endl;
std::cout << " * .adobe-digital-editions directory" << std::endl;
}
int main(int argc, char** argv)
{
int c, ret = -1;
const char** files[] = {&devicekeyFile, &deviceFile, &activationFile};
int verbose = gourou::DRMProcessor::getLogLevel();
int actions = 0;
while (1) {
int option_index = 0;
static struct option long_options[] = {
{"adept-directory", required_argument, 0, 'D' },
{"list", no_argument, 0, 'l' },
{"return", no_argument, 0, 'r' },
{"delete", no_argument, 0, 'd' },
{"verbose", no_argument, 0, 'v' },
{"version", no_argument, 0, 'V' },
{"help", no_argument, 0, 'h' },
{0, 0, 0, 0 }
};
c = getopt_long(argc, argv, "d:lr:D:vVh",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'D':
adeptDir = optarg;
break;
case 'l':
list = true;
actions++;
break;
case 'r':
returnID = optarg;
actions++;
break;
case 'd':
deleteID = optarg;
actions++;
break;
case 'v':
verbose++;
break;
case 'V':
version();
return 0;
case 'h':
usage(argv[0]);
return 0;
default:
usage(argv[0]);
return -1;
}
}
gourou::DRMProcessor::setLogLevel(verbose);
// By default, simply list books loaned
if (actions == 0)
list = true;
else if (actions != 1)
{
usage(argv[0]);
return -1;
}
LoanMGT loanMGT;
int i;
bool hasErrors = false;
const char* orig;
char *filename;
for (i=0; i<(int)ARRAY_SIZE(files); i++)
{
orig = *files[i];
if (adeptDir)
{
std::string path = std::string(adeptDir) + std::string("/") + orig;
filename = strdup(path.c_str());
}
else
filename = strdup(orig);
*files[i] = findFile(filename);
free(filename);
if (!*files[i])
{
std::cout << "Error : " << orig << " doesn't exists, did you activate your device ?" << std::endl;
hasErrors = true;
}
}
if (hasErrors)
{
// In case of adept dir was provided by user
adeptDir = 0;
goto end;
}
if (adeptDir)
adeptDir = strdup(adeptDir); // For below free
else
{
adeptDir = strdup(deviceFile);
adeptDir = dirname(adeptDir);
}
ret = loanMGT.run();
end:
for (i=0; i<(int)ARRAY_SIZE(files); i++)
{
if (*files[i])
free((void*)*files[i]);
}
if (adeptDir)
free(adeptDir);
return ret;
}
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