diff options
Diffstat (limited to 'dirmngr/b64enc.c')
| -rw-r--r-- | dirmngr/b64enc.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/dirmngr/b64enc.c b/dirmngr/b64enc.c deleted file mode 100644 index 4429a8e75..000000000 --- a/dirmngr/b64enc.c +++ /dev/null @@ -1,213 +0,0 @@ -/* b64enc.c - Simple Base64 encoder. - * Copyright (C) 2001, 2003, 2004 Free Software Foundation, Inc. - * - * This file is part of GnuPG. - * - * GnuPG is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * GnuPG is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include <config.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <assert.h> - -#include "i18n.h" -#include "util.h" - -#define B64ENC_DID_HEADER 1 -#define B64ENC_DID_TRAILER 2 -#define B64ENC_NO_LINEFEEDS 16 - - -/* The base-64 character list */ -static unsigned char bintoasc[64] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" - "abcdefghijklmnopqrstuvwxyz" - "0123456789+/"; - -/* Prepare for base-64 writing to the stream FP. If TITLE is not NULL - and not an empty string, this string will be used as the title for - the armor lines, with TITLE being an empty string, we don't write - the header lines and furthermore even don't write any linefeeds. - With TITLE beeing NULL, we merely don't write header but make sure - that lines are not too long. Note, that we don't write any output - unless at least one byte get written using b64enc_write. */ -gpg_error_t -b64enc_start (struct b64state *state, FILE *fp, const char *title) -{ - memset (state, 0, sizeof *state); - state->fp = fp; - if (title && !*title) - state->flags |= B64ENC_NO_LINEFEEDS; - else if (title) - { - state->title = strdup (title); - if (!state->title) - return gpg_error_from_errno (errno); - } - return 0; -} - - -/* Write NBYTES from BUFFER to the Base 64 stream identified by - STATE. With BUFFER and NBYTES being 0, merely do a fflush on the - stream. */ -gpg_error_t -b64enc_write (struct b64state *state, const void *buffer, size_t nbytes) -{ - unsigned char radbuf[4]; - int idx, quad_count; - const unsigned char *p; - FILE *fp = state->fp; - - - if (!nbytes) - { - if (buffer && fflush (fp)) - goto write_error; - return 0; - } - - if (!(state->flags & B64ENC_DID_HEADER)) - { - if (state->title) - { - if ( fputs ("-----BEGIN ", fp) == EOF - || fputs (state->title, fp) == EOF - || fputs ("-----\n", fp) == EOF) - goto write_error; - } - state->flags |= B64ENC_DID_HEADER; - } - - idx = state->idx; - quad_count = state->quad_count; - assert (idx < 4); - memcpy (radbuf, state->radbuf, idx); - - for (p=buffer; nbytes; p++, nbytes--) - { - radbuf[idx++] = *p; - if (idx > 2) - { - char tmp[4]; - - tmp[0] = bintoasc[(*radbuf >> 2) & 077]; - tmp[1] = bintoasc[(((*radbuf<<4)&060)|((radbuf[1] >> 4)&017))&077]; - tmp[2] = bintoasc[(((radbuf[1]<<2)&074)|((radbuf[2]>>6)&03))&077]; - tmp[3] = bintoasc[radbuf[2]&077]; - for (idx=0; idx < 4; idx++) - putc (tmp[idx], fp); - idx = 0; - if (ferror (fp)) - goto write_error; - if (++quad_count >= (64/4)) - { - quad_count = 0; - if (!(state->flags & B64ENC_NO_LINEFEEDS) - && fputs ("\n", fp) == EOF) - goto write_error; - } - } - } - memcpy (state->radbuf, radbuf, idx); - state->idx = idx; - state->quad_count = quad_count; - return 0; - - write_error: - return gpg_error_from_errno (errno); -} - -gpg_error_t -b64enc_finish (struct b64state *state) -{ - gpg_error_t err = 0; - unsigned char radbuf[4]; - int idx, quad_count; - FILE *fp; - - if (!(state->flags & B64ENC_DID_HEADER)) - goto cleanup; - - /* Flush the base64 encoding */ - fp = state->fp; - idx = state->idx; - quad_count = state->quad_count; - assert (idx < 4); - memcpy (radbuf, state->radbuf, idx); - - if (idx) - { - char tmp[4]; - - tmp[0] = bintoasc[(*radbuf>>2)&077]; - if (idx == 1) - { - tmp[1] = bintoasc[((*radbuf << 4) & 060) & 077]; - tmp[2] = '='; - tmp[3] = '='; - } - else - { - tmp[1] = bintoasc[(((*radbuf<<4)&060)|((radbuf[1]>>4)&017))&077]; - tmp[2] = bintoasc[((radbuf[1] << 2) & 074) & 077]; - tmp[3] = '='; - } - for (idx=0; idx < 4; idx++) - putc (tmp[idx], fp); - idx = 0; - if (ferror (fp)) - goto write_error; - - if (++quad_count >= (64/4)) - { - quad_count = 0; - if (!(state->flags & B64ENC_NO_LINEFEEDS) - && fputs ("\n", fp) == EOF) - goto write_error; - } - } - - /* Finish the last line and write the trailer. */ - if (quad_count - && !(state->flags & B64ENC_NO_LINEFEEDS) - && fputs ("\n", fp) == EOF) - goto write_error; - - if (state->title) - { - if ( fputs ("-----END ", fp) == EOF - || fputs (state->title, fp) == EOF - || fputs ("-----\n", fp) == EOF) - goto write_error; - } - - goto cleanup; - - write_error: - err = gpg_error_from_errno (errno); - - cleanup: - if (state->title) - { - free (state->title); - state->title = NULL; - } - state->fp = NULL; - return err; -} - |