minecraft-pi-reborn/launcher/src/mods.c
2024-01-23 21:58:18 -05:00

111 lines
3.3 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <sys/stat.h>
#include <unistd.h>
#include <libreborn/libreborn.h>
#include "bootstrap.h"
// Get All Mods In Folder
static void load(char **ld_preload, const char *folder) {
int folder_name_length = strlen(folder);
// Open Folder
DIR *dp = opendir(folder);
if (dp != NULL) {
// Loop Through Folder
struct dirent *entry = NULL;
errno = 0;
while (1) {
errno = 0;
entry = readdir(dp);
if (entry != NULL) {
// Check If File Is Regular
if (entry->d_type == DT_REG) {
// Get Full Name
int name_length = strlen(entry->d_name);
int total_length = folder_name_length + name_length;
char name[total_length + 1];
// Concatenate Folder Name And File Name
for (int i = 0; i < folder_name_length; i++) {
name[i] = folder[i];
}
for (int i = 0; i < name_length; i++) {
name[folder_name_length + i] = entry->d_name[i];
}
// Add Terminator
name[total_length] = '\0';
// Check If File Is Accessible
int result = access(name, R_OK);
if (result == 0) {
// Add To LD_PRELOAD
string_append(ld_preload, "%s%s", *ld_preload == NULL ? "" : ":", name);
} else if (result == -1 && errno != 0) {
// Fail
WARN("Unable To Access: %s: %s", name, strerror(errno));
errno = 0;
}
}
} else if (errno != 0) {
// Error Reading Contents Of Folder
ERR("Error Reading Directory: %s: %s", folder, strerror(errno));
} else {
// Done!
break;
}
}
// Close Folder
closedir(dp);
} else if (errno == ENOENT) {
// Folder Doesn't Exist
} else {
// Unable To Open Folder
ERR("Error Opening Directory: %s: %s", folder, strerror(errno));
}
}
// Bootstrap Mods
void bootstrap_mods(char *binary_directory) {
// Prepare
char *preload = NULL;
// ~/.minecraft-pi/mods
{
// Get Mods Folder
char *mods_folder = NULL;
safe_asprintf(&mods_folder, "%s" HOME_SUBDIRECTORY_FOR_GAME_DATA "/mods/", getenv("HOME"));
// Load Mods From ./mods
load(&preload, mods_folder);
// Free Mods Folder
free(mods_folder);
}
// Built-In Mods
{
// Get Mods Folder
char *mods_folder = NULL;
safe_asprintf(&mods_folder, "%s/mods/", binary_directory);
// Load Mods From ./mods
load(&preload, mods_folder);
// Free Mods Folder
free(mods_folder);
}
// Add LD_PRELOAD
{
char *value = getenv("LD_PRELOAD");
if (value != NULL && strlen(value) > 0) {
string_append(&preload, ":%s", value);
}
}
// Set
set_and_print_env("MCPI_ARM_LD_PRELOAD", preload);
free(preload);
}