#include "tfcrypt.h"
+tfc_yesno xexit_no_nl;
+
void xerror(tfc_yesno noexit, tfc_yesno noerrno, tfc_yesno nostats, const char *fmt, ...)
{
va_list ap;
char *s;
- if (quiet) goto _ex;
+ if (quiet) goto _do_sil_exit;
va_start(ap, fmt);
if (statline_was_shown == YES && do_statline_dynamic == YES) tfc_esay("\n");
- tfc_nfsay(stderr, "%s: ", progname);
+ tfc_nfsay(stderr, "%s: ", tfc_format_pid(progname));
tfc_vfsay(stderr, NO, fmt, ap);
if (errno && noerrno == NO) {
s = strerror(errno);
va_end(ap);
- if (nostats == NO) print_crypt_status(-1);
+ if (nostats == NO) {
+ print_crypt_status(-1);
+ tfc_esay("\n");
+ }
+
+ xexit_no_nl = YES;
-_ex:
+_do_sil_exit:
if (noexit == YES) {
errno = 0;
return;
void xexit(int status)
{
+ if (status > 1) goto _do_clean_and_exit;
+
+ if (do_ftrunc > TFC_NO_FTRUNC) {
+ if (do_ftrunc == TFC_FTRUNC_TAIL) ftrunc_dfd = total_processed_dst;
+ if (ftruncate(dfd, (off_t)ftrunc_dfd) == -1) xerror(YES, NO, YES, "ftruncate(%d)", dfd);
+ }
+ if (do_preserve_time) fcopy_matime(dfd, &s_stat);
+
+_do_clean_and_exit:
+ xclose(sfd);
+ xclose(dfd);
+
memset(srcblk, 0, sizeof(srcblk));
memset(dstblk, 0, sizeof(dstblk));
memset(pwdask, 0, sizeof(pwdask));
memset(pwdagain, 0, sizeof(pwdagain));
+ if (xexit_no_nl == NO) tfc_esay("\n");
exit(status);
}
{
tfc_yesno is_embedded_prog = NO;
+ xexit_no_nl = YES;
+
if (optopt == 'V') {
- char shash[64];
tfc_say("tfcrypt toolkit, version %s.", _TFCRYPT_VERSION);
- hash_defaults(shash, sizeof(shash));
- tfc_say("Defaults hash: %s", shash);
- memset(shash, 0, sizeof(shash));
+ if (ctr_mode != TFC_MODE_PLAIN) {
+ char shash[64];
+
+ hash_defaults(shash, sizeof(shash));
+ tfc_say("Defaults hash: %s", shash);
+ memset(shash, 0, sizeof(shash));
+ }
xexit(0);
}
tfc_say(" -a: shortcut of -O xtime.");
tfc_say(" -l length: read only these first bytes of source.");
tfc_say(" -O opts: set options (comma separated list):");
+ tfc_say(" ro: open all files only for reading, even those intended for writing,");
tfc_say(" sync: request a synchronous I/O for a output,");
tfc_say(" fsync: on each write() call a corresponding fsync(fd),");
tfc_say(" trunc: open(O_WRONLY) will truncate output file to zero size.");
+ tfc_say(" append: open(O_APPEND) will append data to output file.");
tfc_say(" pad: pad incomplete (l.t. %u bytes) block with zeroes.", TFC_U(TF_BLOCK_SIZE));
tfc_say(" xtime: copy timestamps from source to destination files.");
tfc_say(" gibsize: use SI units of size: 1k = 1000. Applies only to size prefixes.");
tfc_say(" iobs=val: set IO block size value. Must not exceed %u bytes.", TFC_U(TFC_BLKSIZE));
tfc_say(" iseek=val: seek source file/device by these val bytes.");
tfc_say(" oseek=val: seek destination file/device by these val bytes.");
+ tfc_say(" ioseek=val: seek both source and destination.");
+ tfc_say(" ioseek is equal to iseek and oseek.");
tfc_say(" count=val: process only these val bytes, both input and output.");
tfc_say(" ftrunc=val: truncate output file to these val bytes before closing it.");
tfc_say(" ftrunc=tail: truncate output's tail, leaving only processed data.");
tfc_say(" -w: overwrite source file. If not file, ignored.");
tfc_say(" -n TURNS: number of turns to perform in Skein function.");
tfc_say(" Default is always defined when building tfcrypt.");
- tfc_say(" -C mode: mode of operation: CTR, STREAM, XTS, ECB, CBC, OCB.");
+ tfc_say(" -C mode: mode of operation: CTR, STREAM, XTS, ECB, CBC.");
tfc_say(" Default encryption mode can be changed when building tfcrypt.");
tfc_say(" -c opt: initial CTR value initialisation mode:");
tfc_say(" show: do default action, then dump CTR value to stderr,");
tfc_say(" -: read a detached MAC signature from stdin,");
tfc_say(" drop: do not verify attached MAC, if any, and drop it from output.");
tfc_say(" -m: just verify MAC provided with -M. Do not write output file.");
- tfc_say(" This option must be specified after -M.");
+ tfc_say(" -u: almost same as -m, but turns on MAC pre-test mode, when verified");
+ tfc_say(" signature enables writing output file. It is useful when decrypting small texts.");
+ tfc_say(" The source must be a seekable file, otherwise this mode will be disabled.");
+ tfc_say(" In this mode, decryption is done twice and verification done once.");
+ tfc_say(" Both -m and -u options must be specified after -M.");
tfc_say(" -E how: how to behave on I/O errors (both src or dst):");
tfc_say(" exit: print error if not quiet, then exit,");
tfc_say(" cont: print error if not quiet, then continue,");
tfc_say(" -E xall: turn on error actions above for all errors, not just EIO errors.");
tfc_say(" -E xseek: ignore positioning and other seek related errors.");
tfc_say(" Multiple -E specifiers may be given in separate options.");
+ tfc_say(" -o logfile: redirect all messages to logfile instead of stderr.");
tfc_say(" -O opts: set options (comma separated list):");
+ tfc_say(" ro: open all files only for reading, even those intended for writing,");
tfc_say(" sync: request a synchronous I/O for a output,");
tfc_say(" fsync: on each write() call a corresponding fsync(fd),");
tfc_say(" trunc: open(O_WRONLY) will truncate output file to zero size.");
+ tfc_say(" append: open(O_APPEND) will append data to output file.");
tfc_say(" pad: pad incomplete (l.t. %u bytes) block with zeroes.", TFC_U(TF_BLOCK_SIZE));
tfc_say(" xtime: copy timestamps from source to destination files.");
tfc_say(" gibsize: use SI units of size: 1k = 1000. Applies only to size prefixes.");
tfc_say(" statless: emit less information in status line (only processed data).");
tfc_say(" norepeat: do not ask for any possible password confirmations.");
tfc_say(" showsecrets: show passwords in plaintext instead of masking them.");
+ tfc_say(" finished: add \"finished\" word before status line when work is finished.");
+ tfc_say(" pid: show %s's process id near it's name in error messages, logs etc.", progname);
+ tfc_say(" readloops=val: when seekable source ends, reading continues from it's beginning again.");
tfc_say(" prompt=str: set main password prompts to this string.");
tfc_say(" macprompt=str: set MAC password prompts to this string.");
tfc_say(" shorthex: with -H, do not print printable characters, dump only hex string.");
+ tfc_say(" logfile: (same as -o) redirect all messages to logfile instead of stderr.");
tfc_say(" iobs=val: set IO block size value. Must not exceed %u bytes.", TFC_U(TFC_BLKSIZE));
tfc_say(" xtsblocks=val: use these nr of TF blocks per XTS block. Default is %u.", TFC_U(TFC_XTSBLOCKS));
tfc_say(" iseek=val: seek source file/device by these val bytes.");
tfc_say(" ixctr=val: Increment initial counter by this val bytes.");
tfc_say(" Internally this number is translated into number of %u byte blocks.", TFC_U(TF_BLOCK_SIZE));
tfc_say(" oseek=val: seek destination file/device by these val bytes.");
+ tfc_say(" ioseek=val: seek both source and destination.");
+ tfc_say(" ioseek is equal to iseek and oseek.");
tfc_say(" count=val: process only these val bytes, both input and output.");
tfc_say(" ftrunc=val: truncate output file to these val bytes before closing it.");
tfc_say(" ftrunc=tail: truncate output's tail, leaving only processed data.");
projects / tfcrypt.git / blobdiff