diff options
Diffstat (limited to '')
| -rw-r--r-- | gpgme/sign.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/gpgme/sign.c b/gpgme/sign.c new file mode 100644 index 00000000..3274f118 --- /dev/null +++ b/gpgme/sign.c @@ -0,0 +1,190 @@ +/* sign.c - signing functions + * Copyright (C) 2000 Werner Koch (dd9jn) + * + * This file is part of GPGME. + * + * GPGME 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. + * + * GPGME 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 <assert.h> + +#include "util.h" +#include "context.h" +#include "ops.h" + + +struct sign_result_s { + int no_passphrase; + int okay; +}; + + +void +_gpgme_release_sign_result ( SignResult res ) +{ + xfree (res); +} + + + +static void +sign_status_handler ( GpgmeCtx ctx, GpgStatusCode code, char *args ) +{ + if ( ctx->out_of_core ) + return; + if ( ctx->result_type == RESULT_TYPE_NONE ) { + assert ( !ctx->result.sign ); + ctx->result.sign = xtrycalloc ( 1, sizeof *ctx->result.sign ); + if ( !ctx->result.sign ) { + ctx->out_of_core = 1; + return; + } + ctx->result_type = RESULT_TYPE_SIGN; + } + assert ( ctx->result_type == RESULT_TYPE_SIGN ); + + switch (code) { + case STATUS_EOF: + break; + + case STATUS_NEED_PASSPHRASE: + case STATUS_NEED_PASSPHRASE_SYM: + fprintf (stderr, "Ooops: Need a passphrase - use the agent\n"); + break; + + case STATUS_MISSING_PASSPHRASE: + fprintf (stderr, "Missing passphrase - stop\n");; + ctx->result.sign->no_passphrase = 1; + break; + + case STATUS_SIG_CREATED: + /* fixme: we have no error return for multible signatures */ + ctx->result.sign->okay =1; + break; + + default: + fprintf (stderr, "sign_status: code=%d not handled\n", code ); + break; + } +} + + + +GpgmeError +gpgme_op_sign_start ( GpgmeCtx c, GpgmeData in, GpgmeData out ) +{ + int rc = 0; + int i; + + fail_on_pending_request( c ); + c->pending = 1; + + _gpgme_release_result (c); + c->out_of_core = 0; + + /* do some checks */ + assert ( !c->gpg ); + + /* create a process object */ + rc = _gpgme_gpg_new ( &c->gpg ); + if (rc) + goto leave; + + _gpgme_gpg_set_status_handler ( c->gpg, sign_status_handler, c ); + + /* build the commandline */ + _gpgme_gpg_add_arg ( c->gpg, "--sign" ); + _gpgme_gpg_add_arg ( c->gpg, "--detach" ); + if ( c->use_armor ) + _gpgme_gpg_add_arg ( c->gpg, "--armor" ); + if ( c->use_textmode ) + _gpgme_gpg_add_arg ( c->gpg, "--textmode" ); + for ( i=0; i < c->verbosity; i++ ) + _gpgme_gpg_add_arg ( c->gpg, "--verbose" ); + + /* Check the supplied data */ + if ( gpgme_data_get_type (in) == GPGME_DATA_TYPE_NONE ) { + rc = mk_error (No_Data); + goto leave; + } + _gpgme_data_set_mode (in, GPGME_DATA_MODE_OUT ); + if ( !out || gpgme_data_get_type (out) != GPGME_DATA_TYPE_NONE ) { + rc = mk_error (Invalid_Value); + goto leave; + } + _gpgme_data_set_mode (out, GPGME_DATA_MODE_IN ); + + /* Tell the gpg object about the data */ + _gpgme_gpg_add_data ( c->gpg, in, 0 ); + _gpgme_gpg_add_data ( c->gpg, out, 1 ); + + /* and kick off the process */ + rc = _gpgme_gpg_spawn ( c->gpg, c ); + + leave: + if (rc) { + c->pending = 0; + _gpgme_gpg_release ( c->gpg ); c->gpg = NULL; + } + return rc; +} + + +/** + * gpgme_op_sign: + * @c: The context + * @in: Data to be signed + * @out: Detached signature + * + * Create a detached signature for @in and write it to @out. + * The data will be signed using either the default key or the ones + * defined through @c. + * + * Return value: 0 on success or an error code. + **/ +GpgmeError +gpgme_op_sign ( GpgmeCtx c, GpgmeData in, GpgmeData out ) +{ + GpgmeError err = gpgme_op_sign_start ( c, in, out ); + if ( !err ) { + gpgme_wait (c, 1); + if ( c->result_type != RESULT_TYPE_SIGN ) + err = mk_error (General_Error); + else if ( c->out_of_core ) + err = mk_error (Out_Of_Core); + else { + assert ( c->result.sign ); + if ( c->result.sign->no_passphrase ) + err = mk_error (No_Passphrase); + else if (!c->result.sign->okay) + err = mk_error (No_Data); /* Hmmm: choose a better error? */ + } + c->pending = 0; + } + return err; +} + + + + + + + + + |