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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <fcntl.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "daemon.h"
const char *serviceDir = "/";
uid_t serviceUID;
gid_t serviceGID;
char *serviceEnviron[EnvironLen] = {
[SHELL] = "SHELL=" _PATH_BSHELL,
[PATH] = "PATH=" _PATH_DEFPATH,
};
struct Prepend prepend;
struct Services services;
static void serviceFree(struct Service *service) {
free(service->name);
free(service->command);
if (service->outPipe[0] >= 0) {
close(service->outPipe[0]);
close(service->outPipe[1]);
}
if (service->errPipe[0] >= 0) {
close(service->errPipe[0]);
close(service->errPipe[1]);
}
}
int serviceAdd(const char *name, const char *command) {
struct Service *service = NULL;
for (size_t i = 0; i < services.len; ++i) {
if (!strcmp(services.ptr[i].name, name)) {
service = &services.ptr[i];
break;
}
}
if (service) {
char *dup = strdup(command);
if (!dup) return -1;
free(service->command);
service->command = dup;
return 0;
}
if (services.len == services.cap) {
size_t cap = (services.cap ? services.cap * 2 : 8);
void *ptr = realloc(services.ptr, sizeof(*services.ptr) * cap);
if (!ptr) return -1;
services.cap = cap;
services.ptr = ptr;
}
service = &services.ptr[services.len];
*service = (struct Service) {
.outPipe = { -1, -1 },
.errPipe = { -1, -1 },
.restartInterval = restartInterval,
};
service->name = strdup(name);
if (!service->name) goto err;
service->command = strdup(command);
if (!service->command) goto err;
int error = pipe2(service->outPipe, O_CLOEXEC);
if (error) goto err;
error = pipe2(service->errPipe, O_CLOEXEC);
if (error) goto err;
fcntl(service->outPipe[0], F_SETFL, O_NONBLOCK);
fcntl(service->errPipe[0], F_SETFL, O_NONBLOCK);
services.len++;
return 0;
err:
serviceFree(service);
return -1;
}
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