/* vi: set sw=4 ts=4: */ /* * Small lzma deflate implementation. * Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org> * * Based on bunzip.c from busybox * * Licensed under GPL v2, see file LICENSE in this tarball for details. */ #include "busybox.h" #include "unarchive.h" #define UNLZMA_OPT_STDOUT 1 int unlzma_main(int argc, char **argv) { char *filename; unsigned long opt; int status, src_fd, dst_fd; opt = bb_getopt_ulflags(argc, argv, "c"); /* Set input filename and number */ filename = argv[optind]; if ((filename) && (filename[0] != '-') && (filename[1] != '\0')) { /* Open input file */ src_fd = xopen(filename, O_RDONLY); } else { src_fd = STDIN_FILENO; filename = 0; } /* if called as lzmacat force the stdout flag */ if ((opt & UNLZMA_OPT_STDOUT) || bb_applet_name[4] == 'c') filename = 0; if (filename) { struct stat stat_buf; /* bug: char *extension = filename + strlen(filename) - 5; */ char *extension = strrchr(filename, '.'); if (!extension || strcmp(extension, ".lzma") != 0) { bb_error_msg_and_die("invalid extension"); } xstat(filename, &stat_buf); *extension = '\0'; dst_fd = xopen3(filename, O_WRONLY | O_CREAT | O_TRUNC, stat_buf.st_mode); } else dst_fd = STDOUT_FILENO; status = unlzma(src_fd, dst_fd); if (filename) { if (!status) filename[strlen(filename)] = '.'; if (unlink(filename) < 0) { bb_error_msg_and_die("cannot remove %s", filename); } } return status; }