88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <libreborn/libreborn.h>
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#include "bootstrap.h"
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#include "patchelf.h"
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// Duplicate MCPI Executable Into /tmp
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static void duplicate_mcpi_executable() {
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// Get Original Path
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const char *original_path = getenv("MCPI_EXECUTABLE_PATH");
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// Generate New File
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char new_path[] = "/tmp/.minecraft-pi-XXXXXX";
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int new_file_fd = mkstemp(new_path);
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if (new_file_fd == -1) {
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ERR("Unable To Create Temporary File: %s", strerror(errno));
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}
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FILE *new_file = fdopen(new_file_fd, "wb");
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if (new_file == NULL) {
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ERR("Unable To Open Temporary File: %s", strerror(errno));
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}
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set_and_print_env("MCPI_EXECUTABLE_PATH", new_path);
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// Copy Original File
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{
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// Open Original File
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FILE *original_file = fopen(original_path, "rb");
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if (original_file == NULL) {
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ERR("Unable To Open File: %s", original_path);
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}
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// Copy
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#define BUFFER_SIZE 1024
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char buf[BUFFER_SIZE];
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size_t bytes_read = 0;
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while ((bytes_read = fread((void *) buf, 1, BUFFER_SIZE, original_file)) > 0) {
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fwrite((void *) buf, 1, bytes_read, new_file);
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if (ferror(new_file) != 0) {
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ERR("Unable To Write File: %s", new_path);
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}
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}
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if (ferror(original_file) != 0) {
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ERR("Unable To Read File: %s", original_path);
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}
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// Close Original File
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fclose(original_file);
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}
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// Fix Permissions
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if (fchmod(new_file_fd, S_IRUSR | S_IWUSR | S_IXUSR) != 0) {
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ERR("Unable To Set File Permissions: %s: %s", new_path, strerror(errno));
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}
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// Close New File
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fclose(new_file);
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close(new_file_fd);
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}
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// Fix MCPI Dependencies
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void patch_mcpi_elf_dependencies(const char *linker) {
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// Duplicate MCPI executable into /tmp so it can be modified.
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duplicate_mcpi_executable();
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// Run patchelf
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const char *const command[] = {
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"patchelf",
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"--set-interpreter", linker,
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"--remove-needed", "libbcm_host.so",
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"--remove-needed", "libX11.so.6",
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"--remove-needed", "libEGL.so",
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"--replace-needed", "libGLESv2.so", "libGLESv1_CM.so.1",
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getenv("MCPI_EXECUTABLE_PATH"),
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NULL
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};
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int return_code = 0;
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char *output = run_command(command, &return_code);
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if (output != NULL) {
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free(output);
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}
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if (return_code != 0) {
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ERR("patchelf Failed: Exit Code: %i", return_code);
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}
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}
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