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/* config.c
*
* Copyright 2024 axtlos <axtlos@disroot.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#define _XOPEN_SOURCE 500
#include <stdlib.h>
#include <extlib.h>
#include <ftw.h>
#include <stdio.h>
#include <string.h>
#include "config.h"
struct compile_cmd_t ***ccmds;
size_t ccmds_size = 0;
struct compile_cmd_t *compile_cmd_init()
{
struct compile_cmd_t *self = malloc (sizeof (struct compile_cmd_t));
self->cmd = NULL;
self->args = strdup ("");
self->fileext = NULL;
return self;
}
void
compile_cmd_free (struct compile_cmd_t *self)
{
if (self->cmd) free (self->cmd);
if (self->args) free (self->args);
if (self->fileext) free (self->fileext);
free (self);
}
int
parse_config(const char *fpath, const struct stat *sb,
int typeflag, struct FTW *ftwbuf)
{
if (!S_ISREG (sb->st_mode))
return 0;
if (sb->st_size < 12) // config file that doesnt even include "compiler=xx" can be ignored
return 0;
struct compile_cmd_t *ccmd = compile_cmd_init();
struct compile_cmd_t **ccmds_tmp = realloc (*ccmds, sizeof (ccmds)+sizeof (struct compile_cmd_t));
if (ccmds_tmp)
*ccmds = ccmds_tmp;
FILE *cfg = fopen (fpath, "r");
int CMD_SET = 1;
int FILEEXT_SET = 2;
int filled = 0;
while (filled != (CMD_SET|FILEEXT_SET)) {
char *line = strdup ("");
int tmp_char = '\0';
while ((tmp_char = fgetc (cfg))) {
char *line_tmp = realloc (line, strlen (line) + 8);
if (line_tmp) line = line_tmp;
sprintf (line, "%s%c", line, tmp_char);
if (tmp_char == '\n' || tmp_char == '\0')
break;
}
char *seperator_fnd = strstr (line, "=");
if (!seperator_fnd)
fprintf (stderr, "warn: invalid configuration: %s\n", fpath);
else {
char *value = strdup (seperator_fnd+1);
int identifier_len = strlen (line) - strlen (value) - 1;
char *identifier = malloc (identifier_len + 1);
strncpy(identifier, line, identifier_len);
identifier[identifier_len] = '\0';
if (strcmp (identifier, "compiler") == 0 && !(filled & CMD_SET)) {
ccmd->cmd = trim (value, NULL, NULL);
filled = filled | CMD_SET;
}
else if (strcmp (identifier, "args") == 0) {
free (ccmd->args);
ccmd->args = trim (value, NULL, NULL);
}
else if (strcmp (identifier, "fileext") == 0 && !(filled & FILEEXT_SET)) {
ccmd->fileext = trim (value, NULL, NULL);
filled = filled | FILEEXT_SET;
}
else {
fprintf (stderr, "warn: invalid configuration: %s\n", fpath);
free (identifier);
free (value);
free (line);
fclose (cfg);
free (ccmd);
return 1;
}
free (identifier);
free (value);
}
free (line);
}
fclose (cfg);
ccmds_tmp[ccmds_size] = ccmd;
ccmds_size += 1;
return 0;
}
size_t get_commands(struct compile_cmd_t ***ccmds_glob) {
ccmds = ccmds_glob;
*ccmds = malloc (sizeof (struct compile_cmd_t));
char *home = getenv ("HOME");
if (!home) {
fprintf (stderr, "warn: HOME not found. Unable to read home configuration files.\n");
}
char *paths[2] = {"/etc/runc.d", NULL};
if (home) {
paths[1] = malloc (strlen (home)+strlen ("/.config/runc")+1);
sprintf (paths[1], "%s/.config/runc", home);
}
for (int i = 0; i < 2; i++) {
if (!paths[i]) break;
nftw (paths[i], parse_config, 10, FTW_DEPTH|FTW_MOUNT|FTW_PHYS);
if (i==1) free (paths[i]);
}
return ccmds_size;
}
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