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/*****************************************************************************
* Copyright 2014 - 2015 Yichao Yu <yyc1992@gmail.com> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation; either version 2.1 of the *
* License, or (at your option) version 3, or any later version accepted *
* by the membership of KDE e.V. (or its successor approved by the *
* membership of KDE e.V.), which shall act as a proxy defined in *
* Section 6 of version 3 of the license. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library. If not, *
* see <http://www.gnu.org/licenses/>. *
*****************************************************************************/
#include <qtcurve-utils/process.h>
#include <assert.h>
#include <unistd.h>
#include <time.h>
#include <sys/socket.h>
static char buff1[1024];
static char buff2[1024];
static void
fillBuffer(char *buff, size_t size)
{
for (unsigned i = 0;i < size - 1;i++) {
while (!buff[i]) {
buff[i] = random();
}
}
buff[size - 1] = '\0';
}
static void
subProcess(int, char **argv)
{
char buff3[1024] = {0};
read(0, buff3, sizeof(buff3));
assert(memcmp(argv[1], buff3, sizeof(buff3)) == 0);
write(1, argv[2], strlen(argv[2]) + 1);
}
static void
mainProcess(int, char **argv)
{
srandom(time(nullptr));
fillBuffer(buff1, sizeof(buff1));
fillBuffer(buff2, sizeof(buff2));
QtcPopenFD fds[] = {{
.orig = 0,
.replace = 0,
.mode = QTC_POPEN_WRITE
}, {
.orig = 1,
.replace = 0,
.mode = QTC_POPEN_READ
}
};
alarm(1);
const char* const args[] = {argv[0], buff1, buff2, nullptr};
qtcPopen(argv[0], args, sizeof(fds) / sizeof(fds[0]), fds);
write(fds[0].replace, buff1, sizeof(buff1));
shutdown(fds[0].replace, SHUT_RDWR);
close(fds[0].replace);
char buff3[1024] = {0};
read(fds[1].replace, buff3, sizeof(buff3));
assert(memcmp(buff2, buff3, sizeof(buff3)) == 0);
}
int
main(int argc, char **argv)
{
if (argv[1]) {
subProcess(argc, argv);
} else {
mainProcess(argc, argv);
}
return 0;
}
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