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b008274afd
We better do this once and for all instead of cluttering all future commits with diffs of trailing white spaces. In the majority of cases blank or single lines are affected and thus this change won't disturb a git blame too much. For future commits the pre-commit scripts checks that this won't happen again.
569 lines
13 KiB
C
569 lines
13 KiB
C
/* status.c - Status message and command-fd interface
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003,
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* 2004, 2005, 2006, 2010 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#ifdef HAVE_SIGNAL_H
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# include <signal.h>
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#endif
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#include "gpg.h"
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#include "util.h"
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#include "status.h"
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#include "ttyio.h"
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#include "options.h"
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#include "main.h"
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#include "i18n.h"
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#include "cipher.h" /* for progress functions */
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#define CONTROL_D ('D' - 'A' + 1)
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/* The stream to output the status information. Output is disabled if
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this is NULL. */
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static estream_t statusfp;
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static void
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progress_cb (void *ctx, const char *what, int printchar,
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int current, int total)
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{
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char buf[50];
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(void)ctx;
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if ( printchar == '\n' && !strcmp (what, "primegen") )
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snprintf (buf, sizeof buf -1, "%.20s X 100 100", what );
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else
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snprintf (buf, sizeof buf -1, "%.20s %c %d %d",
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what, printchar=='\n'?'X':printchar, current, total );
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write_status_text (STATUS_PROGRESS, buf);
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}
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/* Return true if the status message NO may currently be issued. We
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need this to avoid syncronisation problem while auto retrieving a
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key. There it may happen that a status NODATA is issued for a non
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available key and the user may falsely interpret this has a missing
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signature. */
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static int
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status_currently_allowed (int no)
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{
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if (!glo_ctrl.in_auto_key_retrieve)
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return 1; /* Yes. */
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/* We allow some statis anyway, so that import statistics are
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correct and to avoid problems if the retriebval subsystem will
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prompt the user. */
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switch (no)
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{
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case STATUS_GET_BOOL:
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case STATUS_GET_LINE:
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case STATUS_GET_HIDDEN:
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case STATUS_GOT_IT:
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case STATUS_IMPORTED:
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case STATUS_IMPORT_OK:
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case STATUS_IMPORT_CHECK:
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case STATUS_IMPORT_RES:
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return 1; /* Yes. */
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default:
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break;
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}
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return 0; /* No. */
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}
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void
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set_status_fd (int fd)
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{
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static int last_fd = -1;
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if (fd != -1 && last_fd == fd)
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return;
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if (statusfp && statusfp != es_stdout && statusfp != es_stderr )
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es_fclose (statusfp);
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statusfp = NULL;
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if (fd == -1)
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return;
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if (fd == 1)
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statusfp = es_stdout;
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else if (fd == 2)
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statusfp = es_stderr;
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else
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statusfp = es_fdopen (fd, "w");
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if (!statusfp)
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{
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log_fatal ("can't open fd %d for status output: %s\n",
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fd, strerror (errno));
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}
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last_fd = fd;
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gcry_set_progress_handler (progress_cb, NULL);
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}
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int
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is_status_enabled ()
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{
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return !!statusfp;
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}
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void
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write_status ( int no )
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{
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write_status_text( no, NULL );
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}
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void
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write_status_text (int no, const char *text)
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{
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if (!statusfp || !status_currently_allowed (no) )
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return; /* Not enabled or allowed. */
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es_fputs ("[GNUPG:] ", statusfp);
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es_fputs (get_status_string (no), statusfp);
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if ( text )
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{
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es_putc ( ' ', statusfp);
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for (; *text; text++)
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{
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if (*text == '\n')
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es_fputs ("\\n", statusfp);
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else if (*text == '\r')
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es_fputs ("\\r", statusfp);
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else
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es_fputc ( *(const byte *)text, statusfp);
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}
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}
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es_putc ('\n', statusfp);
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if (es_fflush (statusfp) && opt.exit_on_status_write_error)
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g10_exit (0);
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}
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/* Wrte an ERROR status line using a full gpg-error error value. */
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void
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write_status_error (const char *where, gpg_error_t err)
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{
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if (!statusfp || !status_currently_allowed (STATUS_ERROR))
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return; /* Not enabled or allowed. */
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es_fprintf (statusfp, "[GNUPG:] %s %s %u\n",
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get_status_string (STATUS_ERROR), where, err);
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if (es_fflush (statusfp) && opt.exit_on_status_write_error)
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g10_exit (0);
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}
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/* Same as above but outputs the error code only. */
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void
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write_status_errcode (const char *where, int errcode)
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{
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if (!statusfp || !status_currently_allowed (STATUS_ERROR))
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return; /* Not enabled or allowed. */
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es_fprintf (statusfp, "[GNUPG:] %s %s %u\n",
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get_status_string (STATUS_ERROR), where, gpg_err_code (errcode));
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if (es_fflush (statusfp) && opt.exit_on_status_write_error)
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g10_exit (0);
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}
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/*
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* Write a status line with a buffer using %XX escapes. If WRAP is >
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* 0 wrap the line after this length. If STRING is not NULL it will
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* be prepended to the buffer, no escaping is done for string.
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* A wrap of -1 forces spaces not to be encoded as %20.
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*/
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void
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write_status_text_and_buffer (int no, const char *string,
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const char *buffer, size_t len, int wrap)
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{
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const char *s, *text;
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int esc, first;
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int lower_limit = ' ';
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size_t n, count, dowrap;
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if (!statusfp || !status_currently_allowed (no))
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return; /* Not enabled or allowed. */
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if (wrap == -1)
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{
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lower_limit--;
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wrap = 0;
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}
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text = get_status_string (no);
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count = dowrap = first = 1;
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do
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{
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if (dowrap)
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{
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es_fprintf (statusfp, "[GNUPG:] %s ", text);
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count = dowrap = 0;
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if (first && string)
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{
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es_fputs (string, statusfp);
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count += strlen (string);
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/* Make sure that there is a space after the string. */
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if (*string && string[strlen (string)-1] != ' ')
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{
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es_putc (' ', statusfp);
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count++;
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}
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}
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first = 0;
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}
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for (esc=0, s=buffer, n=len; n && !esc; s++, n--)
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{
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if (*s == '%' || *(const byte*)s <= lower_limit
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|| *(const byte*)s == 127 )
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esc = 1;
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if (wrap && ++count > wrap)
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{
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dowrap=1;
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break;
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}
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}
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if (esc)
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{
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s--; n++;
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}
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if (s != buffer)
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es_fwrite (buffer, s-buffer, 1, statusfp);
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if ( esc )
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{
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es_fprintf (statusfp, "%%%02X", *(const byte*)s );
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s++; n--;
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}
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buffer = s;
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len = n;
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if (dowrap && len)
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es_putc ('\n', statusfp);
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}
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while (len);
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es_putc ('\n',statusfp);
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if (es_fflush (statusfp) && opt.exit_on_status_write_error)
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g10_exit (0);
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}
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void
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write_status_buffer (int no, const char *buffer, size_t len, int wrap)
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{
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write_status_text_and_buffer (no, NULL, buffer, len, wrap);
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}
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/* Print the BEGIN_SIGNING status message. If MD is not NULL it is
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used to retrieve the hash algorithms used for the message. */
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void
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write_status_begin_signing (gcry_md_hd_t md)
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{
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if (md)
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{
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char buf[100];
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size_t buflen;
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int i;
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/* We use a hard coded list of possible algorithms. Using other
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algorithms than specified by OpenPGP does not make sense
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anyway. We do this out of performance reasons: Walking all
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the 110 allowed Ids is not a good idea given the way the
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check is implemented in libgcrypt. Recall that the only use
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of this status code is to create the micalg algorithm for
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PGP/MIME. */
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buflen = 0;
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for (i=1; i <= 11; i++)
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if (i < 4 || i > 7)
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if (gcry_md_is_enabled (md, i) && buflen < DIM(buf))
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{
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snprintf (buf+buflen, DIM(buf) - buflen - 1,
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"%sH%d", buflen? " ":"",i);
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buflen += strlen (buf+buflen);
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}
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write_status_text (STATUS_BEGIN_SIGNING, buf);
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}
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else
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write_status ( STATUS_BEGIN_SIGNING );
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}
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static int
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myread(int fd, void *buf, size_t count)
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{
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int rc;
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do
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{
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rc = read( fd, buf, count );
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}
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while (rc == -1 && errno == EINTR);
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if (!rc && count)
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{
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static int eof_emmited=0;
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if ( eof_emmited < 3 )
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{
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*(char*)buf = CONTROL_D;
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rc = 1;
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eof_emmited++;
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}
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else /* Ctrl-D not caught - do something reasonable */
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{
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#ifdef HAVE_DOSISH_SYSTEM
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#ifndef HAVE_W32CE_SYSTEM
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raise (SIGINT); /* Nothing to hangup under DOS. */
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#endif
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#else
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raise (SIGHUP); /* No more input data. */
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#endif
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}
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}
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return rc;
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}
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/* Request a string from the client over the command-fd. If GETBOOL
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is set the function returns a static string (do not free) if the
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netered value was true or NULL if the entered value was false. */
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static char *
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do_get_from_fd ( const char *keyword, int hidden, int getbool )
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{
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int i, len;
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char *string;
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if (statusfp != es_stdout)
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es_fflush (es_stdout);
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write_status_text (getbool? STATUS_GET_BOOL :
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hidden? STATUS_GET_HIDDEN : STATUS_GET_LINE, keyword);
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for (string = NULL, i = len = 200; ; i++ )
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{
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if (i >= len-1 )
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{
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char *save = string;
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len += 100;
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string = hidden? xmalloc_secure ( len ) : xmalloc ( len );
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if (save)
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memcpy (string, save, i );
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else
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i = 0;
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}
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/* Fixme: why not use our read_line function here? */
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if ( myread( opt.command_fd, string+i, 1) != 1 || string[i] == '\n' )
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break;
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else if ( string[i] == CONTROL_D )
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{
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/* Found ETX - Cancel the line and return a sole ETX. */
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string[0] = CONTROL_D;
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i = 1;
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break;
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}
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}
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string[i] = 0;
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write_status (STATUS_GOT_IT);
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if (getbool) /* Fixme: is this correct??? */
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return (string[0] == 'Y' || string[0] == 'y') ? "" : NULL;
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return string;
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}
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int
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cpr_enabled()
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{
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if( opt.command_fd != -1 )
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return 1;
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return 0;
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}
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char *
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cpr_get_no_help( const char *keyword, const char *prompt )
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{
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char *p;
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if( opt.command_fd != -1 )
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return do_get_from_fd ( keyword, 0, 0 );
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for(;;) {
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p = tty_get( prompt );
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return p;
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}
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}
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char *
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cpr_get( const char *keyword, const char *prompt )
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{
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char *p;
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if( opt.command_fd != -1 )
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return do_get_from_fd ( keyword, 0, 0 );
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for(;;) {
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p = tty_get( prompt );
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if( *p=='?' && !p[1] && !(keyword && !*keyword)) {
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xfree(p);
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display_online_help( keyword );
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}
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else
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return p;
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}
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}
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char *
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cpr_get_utf8( const char *keyword, const char *prompt )
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{
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char *p;
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p = cpr_get( keyword, prompt );
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if( p ) {
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char *utf8 = native_to_utf8( p );
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xfree( p );
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p = utf8;
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}
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return p;
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}
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char *
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cpr_get_hidden( const char *keyword, const char *prompt )
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{
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char *p;
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if( opt.command_fd != -1 )
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return do_get_from_fd ( keyword, 1, 0 );
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for(;;) {
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p = tty_get_hidden( prompt );
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if( *p == '?' && !p[1] ) {
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xfree(p);
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display_online_help( keyword );
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}
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else
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return p;
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}
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}
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void
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cpr_kill_prompt(void)
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{
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if( opt.command_fd != -1 )
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return;
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tty_kill_prompt();
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return;
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}
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int
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cpr_get_answer_is_yes( const char *keyword, const char *prompt )
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{
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int yes;
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char *p;
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if( opt.command_fd != -1 )
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return !!do_get_from_fd ( keyword, 0, 1 );
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for(;;) {
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p = tty_get( prompt );
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trim_spaces(p); /* it is okay to do this here */
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if( *p == '?' && !p[1] ) {
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xfree(p);
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display_online_help( keyword );
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}
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else {
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tty_kill_prompt();
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yes = answer_is_yes(p);
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xfree(p);
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return yes;
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}
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}
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}
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int
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cpr_get_answer_yes_no_quit( const char *keyword, const char *prompt )
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{
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int yes;
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char *p;
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if( opt.command_fd != -1 )
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return !!do_get_from_fd ( keyword, 0, 1 );
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for(;;) {
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p = tty_get( prompt );
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trim_spaces(p); /* it is okay to do this here */
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if( *p == '?' && !p[1] ) {
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xfree(p);
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display_online_help( keyword );
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}
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else {
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tty_kill_prompt();
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yes = answer_is_yes_no_quit(p);
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xfree(p);
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return yes;
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}
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}
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}
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int
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cpr_get_answer_okay_cancel (const char *keyword,
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const char *prompt,
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int def_answer)
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{
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int yes;
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char *answer = NULL;
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char *p;
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if( opt.command_fd != -1 )
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answer = do_get_from_fd ( keyword, 0, 0 );
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if (answer)
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{
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yes = answer_is_okay_cancel (answer, def_answer);
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xfree (answer);
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return yes;
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}
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for(;;)
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{
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p = tty_get( prompt );
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trim_spaces(p); /* it is okay to do this here */
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if (*p == '?' && !p[1])
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{
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xfree(p);
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display_online_help (keyword);
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}
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else
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{
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tty_kill_prompt();
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yes = answer_is_okay_cancel (p, def_answer);
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xfree(p);
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return yes;
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}
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}
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}
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