UserFile userfile_popen(uid_t uid, const char *command, const char *type)
{
int handle;
if (uid == geteuid()) {
handle = do_popen(command, type);
if (handle < 0)
return NULL;
return userfile_make_handle(USERFILE_LOCAL, handle);
}
return NULL;
}
void LightProcess::runShadow() {
std::string buf;
pollfd pfd[1];
pfd[0].fd = m_afdt_fd;
pfd[0].events = POLLIN;
try {
while (true) {
int ret = poll(pfd, 1, -1);
if (ret < 0 && errno == EINTR) {
continue;
}
if (pfd[0].revents & POLLHUP) {
// no more command can come in
Logger::Error("Lost parent, LightProcess exiting");
break;
}
if (pfd[0].revents & POLLIN) {
lwp_read(m_afdt_fd, buf);
if (buf == "exit") {
Logger::Verbose("LightProcess exiting upon request");
break;
} else if (buf == "popen") {
do_popen(m_afdt_fd);
} else if (buf == "pclose") {
do_pclose(m_afdt_fd);
} else if (buf == "proc_open") {
do_proc_open(m_afdt_fd);
} else if (buf == "waitpid") {
do_waitpid(m_afdt_fd);
} else if (buf == "change_user") {
do_change_user(m_afdt_fd);
} else if (buf[0]) {
Logger::Info("LightProcess got invalid command: %.20s", buf.c_str());
}
}
}
} catch (const std::exception& e) {
Logger::Error("LightProcess exiting due to exception: %s", e.what());
} catch (...) {
Logger::Error("LightProcess exiting due to unknown exception");
}
::close(m_afdt_fd);
_Exit(0);
}
void LightProcess::runShadow(int fdin, int fdout) {
FILE *fin = fdopen(fdin, "r");
FILE *fout = fdopen(fdout, "w");
char buf[BUFFER_SIZE];
pollfd pfd[1];
pfd[0].fd = fdin;
pfd[0].events = POLLIN;
while (true) {
int ret = poll(pfd, 1, -1);
if (ret < 0 && errno == EINTR) {
continue;
}
if (pfd[0].revents & POLLIN) {
if (!fgets(buf, BUFFER_SIZE, fin)) buf[0] = '\0';
if (strncmp(buf, "exit", 4) == 0) {
Logger::Info("LightProcess exiting upon request");
break;
} else if (strncmp(buf, "popen", 5) == 0) {
do_popen(fin, fout, m_afdt_fd);
} else if (strncmp(buf, "pclose", 6) == 0) {
do_pclose(fin, fout);
} else if (strncmp(buf, "proc_open", 9) == 0) {
do_proc_open(fin, fout, m_afdt_fd);
} else if (strncmp(buf, "waitpid", 7) == 0) {
do_waitpid(fin, fout);
} else if (strncmp(buf, "change_user", 11) == 0) {
do_change_user(fin, fout);
} else if (buf[0]) {
Logger::Info("LightProcess got invalid command: %.20s", buf);
}
} else if (pfd[0].revents & POLLHUP) {
// no more command can come in
Logger::Error("Lost parent, LightProcess exiting");
break;
}
}
fclose(fin);
fclose(fout);
::close(m_afdt_fd);
remove(m_afdtFilename.c_str());
_Exit(0);
}
void LightProcess::runShadow(int fdin, int fdout) {
FILE *fin = fdopen(fdin, "r");
FILE *fout = fdopen(fdout, "w");
char buf[BUFFER_SIZE];
pollfd pfd[1];
pfd[0].fd = fdin;
pfd[0].events = POLLIN;
while (true) {
poll(pfd, 1, -1);
if (pfd[0].revents & POLLHUP) {
// no more command can come in
break;
}
else if (pfd[0].revents & POLLIN) {
if (!fgets(buf, BUFFER_SIZE, fin)) buf[0] = '\0';
if (strncmp(buf, "exit", 4) == 0) {
break;
} else if (strncmp(buf, "popen", 5) == 0) {
do_popen(fin, fout, m_afdt_fd);
} else if (strncmp(buf, "pclose", 6) == 0) {
do_pclose(fin, fout);
} else if (strncmp(buf, "proc_open", 9) == 0) {
do_proc_open(fin, fout, m_afdt_fd);
} else if (strncmp(buf, "waitpid", 7) == 0) {
do_waitpid(fin, fout);
} else if (strncmp(buf, "change_user", 11) == 0) {
do_change_user(fin, fout);
}
}
}
fclose(fin);
fclose(fout);
::close(m_afdt_fd);
remove(m_afdtFilename.c_str());
exit(0);
}
