FreeCalypso > hg > fc-sim-tools
view simtool/restorebin.c @ 47:b0cf75d0bb2d
doc/Serial-SIM-readers article written
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 21 Mar 2021 04:32:18 +0000 |
parents | ddd767f6e15b |
children |
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/* * This module implements the restore-file command; this command * reads binary files previously saved with the savebin command * and writes the backed-up bits back to the SIM. */ #include <sys/types.h> #include <sys/file.h> #include <sys/stat.h> #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include "curfile.h" restore_bin_transparent(data) u_char *data; { unsigned off, cc; int rc; for (off = 0; off < curfile_total_size; off += cc) { cc = curfile_total_size - off; if (cc > 255) cc = 255; rc = update_bin_op(off, data + off, cc); if (rc < 0) return(rc); } return(0); } restore_bin_records(data) u_char *data; { unsigned recno; u_char *dp; int rc; dp = data; for (recno = 1; recno <= curfile_record_count; recno++) { rc = update_rec_op(recno, 0x04, dp, curfile_record_len); if (rc < 0) return(rc); dp += curfile_record_len; } return(0); } restore_bin_cyclic(data) u_char *data; { unsigned count; u_char *dp; int rc; dp = data + curfile_total_size; for (count = 0; count < curfile_record_count; count++) { dp -= curfile_record_len; rc = update_rec_op(0, 0x03, dp, curfile_record_len); if (rc < 0) return(rc); } return(0); } cmd_restore_file(argc, argv) char **argv; { int file_id, rc, fd; struct stat st; u_char *databuf; if (isxdigit(argv[1][0]) && isxdigit(argv[1][1]) && isxdigit(argv[1][2]) && isxdigit(argv[1][3]) && !argv[1][4]) file_id = strtoul(argv[1], 0, 16); else file_id = find_symbolic_file_name(argv[1]); if (file_id < 0) { fprintf(stderr, "error: file ID argument is not a hex value or a recognized symbolic name\n"); return(-1); } rc = select_op(file_id); if (rc < 0) return(rc); rc = parse_ef_select_response(); if (rc < 0) return(rc); if (!curfile_total_size) { printf("SIM indicates file of zero length, nothing to do\n"); return(0); } fd = open(argv[2], O_RDONLY); if (fd < 0) { perror(argv[2]); return(-1); } fstat(fd, &st); if ((st.st_mode & S_IFMT) != S_IFREG) { fprintf(stderr, "error: %s is not a regular file\n", argv[2]); close(fd); return(-1); } if (st.st_size != curfile_total_size) { fprintf(stderr, "error: length of %s does not match SIM EF length of %u bytes\n", argv[2], curfile_total_size); close(fd); return(-1); } databuf = malloc(curfile_total_size); if (!databuf) { perror("malloc for file data"); close(fd); return(-1); } read(fd, databuf, curfile_total_size); close(fd); switch (curfile_structure) { case 0x00: /* transparent */ rc = restore_bin_transparent(databuf); break; case 0x01: /* record-based */ rc = restore_bin_records(databuf); break; case 0x03: /* cyclic */ rc = restore_bin_cyclic(databuf); break; } free(databuf); return(rc); }