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/*
* pkg - Package locker
* https://rawnix.org
*
* Copyright (c) 2025 zorz@gmx.com
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "locker.h"
#include "paths.h"
#include <fcntl.h>
#include <unistd.h>
struct locker {
char *path;
strarray_t pkgs;
};
locker_t *locker_open(const char *root)
{
locker_t *l;
FILE *fp;
char line[256];
l = xmalloc(sizeof(locker_t));
strarray_init(&l->pkgs);
l->path = build_root_path(root, LOCK_FILE);
fp = fopen(l->path, "r");
if (!fp)
return l;
while (fgets(line, sizeof(line), fp)) {
line[strcspn(line, "\n")] = '\0';
if (line[0] && line[0] != '#')
strarray_add(&l->pkgs, line);
}
fclose(fp);
return l;
}
void locker_close(locker_t *l)
{
if (!l)
return;
strarray_free(&l->pkgs);
free(l->path);
free(l);
}
static int locker_save(locker_t *l)
{
char tmp[4096];
int fd;
FILE *fp;
size_t i;
ensure_parent_dir(l->path);
snprintf(tmp, sizeof(tmp), "%s.tmp", l->path);
fd = open(tmp, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd < 0)
return -1;
fp = fdopen(fd, "w");
if (!fp) {
close(fd);
unlink(tmp);
return -1;
}
fprintf(fp, "# Locked packages (excluded from sysup)\n");
for (i = 0; i < l->pkgs.size; i++)
fprintf(fp, "%s\n", l->pkgs.data[i]);
if (file_close_checked(fp) != 0) {
unlink(tmp);
return -1;
}
if (rename(tmp, l->path) != 0) {
unlink(tmp);
return -1;
}
return 0;
}
bool locker_is_locked(locker_t *l, const char *pkg)
{
return strarray_contains(&l->pkgs, pkg);
}
bool locker_lock(locker_t *l, const char *pkg)
{
if (locker_is_locked(l, pkg))
return true;
strarray_add(&l->pkgs, pkg);
return locker_save(l) == 0;
}
bool locker_unlock(locker_t *l, const char *pkg)
{
size_t i;
for (i = 0; i < l->pkgs.size; i++) {
if (strcmp(l->pkgs.data[i], pkg) == 0) {
free(l->pkgs.data[i]);
l->pkgs.data[i] = l->pkgs.data[--l->pkgs.size];
return locker_save(l) == 0;
}
}
return false;
}
strarray_t *locker_list(locker_t *l)
{
strarray_t *arr;
size_t i;
arr = xmalloc(sizeof(strarray_t));
strarray_init(arr);
for (i = 0; i < l->pkgs.size; i++)
strarray_add(arr, l->pkgs.data[i]);
return arr;
}
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