Line data Source code
1 : /* encrypt-sign.c - encrypt and verify functions
2 : Copyright (C) 2000 Werner Koch (dd9jn)
3 : Copyright (C) 2001, 2002, 2003, 2004 g10 Code GmbH
4 :
5 : This file is part of GPGME.
6 :
7 : GPGME is free software; you can redistribute it and/or modify it
8 : under the terms of the GNU Lesser General Public License as
9 : published by the Free Software Foundation; either version 2.1 of
10 : the License, or (at your option) any later version.
11 :
12 : GPGME is distributed in the hope that it will be useful, but
13 : WITHOUT ANY WARRANTY; without even the implied warranty of
14 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 : Lesser General Public License for more details.
16 :
17 : You should have received a copy of the GNU Lesser General Public
18 : License along with this program; if not, write to the Free Software
19 : Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 : 02111-1307, USA. */
21 :
22 : #if HAVE_CONFIG_H
23 : #include <config.h>
24 : #endif
25 : #include <stdlib.h>
26 : #include <string.h>
27 : #include <errno.h>
28 :
29 : #include "gpgme.h"
30 : #include "debug.h"
31 : #include "context.h"
32 : #include "ops.h"
33 :
34 :
35 : static gpgme_error_t
36 138 : encrypt_sign_status_handler (void *priv, gpgme_status_code_t code, char *args)
37 : {
38 : gpgme_error_t err;
39 :
40 138 : err = _gpgme_progress_status_handler (priv, code, args);
41 138 : if (!err)
42 138 : err = _gpgme_encrypt_status_handler (priv, code, args);
43 138 : if (!err)
44 136 : err = _gpgme_sign_status_handler (priv, code, args);
45 138 : return err;
46 : }
47 :
48 :
49 : static gpgme_error_t
50 39 : encrypt_sym_status_handler (void *priv, gpgme_status_code_t code, char *args)
51 : {
52 : gpgme_error_t err;
53 :
54 39 : err = _gpgme_progress_status_handler (priv, code, args);
55 39 : if (!err)
56 39 : err = _gpgme_sign_status_handler (priv, code, args);
57 39 : if (!err)
58 39 : err = _gpgme_passphrase_status_handler (priv, code, args);
59 39 : return err;
60 : }
61 :
62 :
63 : static gpgme_error_t
64 17 : encrypt_sign_start (gpgme_ctx_t ctx, int synchronous, gpgme_key_t recp[],
65 : const char *recpstring,
66 : gpgme_encrypt_flags_t flags,
67 : gpgme_data_t plain, gpgme_data_t cipher)
68 : {
69 : gpgme_error_t err;
70 : int symmetric;
71 :
72 17 : err = _gpgme_op_reset (ctx, synchronous);
73 17 : if (err)
74 0 : return err;
75 :
76 17 : symmetric = (!recp && !recpstring) || (flags & GPGME_ENCRYPT_SYMMETRIC);
77 :
78 17 : if (!plain)
79 0 : return gpg_error (GPG_ERR_NO_DATA);
80 17 : if (!cipher)
81 0 : return gpg_error (GPG_ERR_INV_VALUE);
82 17 : if (recp && !*recp)
83 0 : return gpg_error (GPG_ERR_INV_VALUE);
84 :
85 17 : err = _gpgme_op_encrypt_init_result (ctx);
86 17 : if (err)
87 0 : return err;
88 :
89 17 : err = _gpgme_op_sign_init_result (ctx);
90 17 : if (err)
91 0 : return err;
92 :
93 17 : if (ctx->passphrase_cb)
94 : {
95 7 : err = _gpgme_engine_set_command_handler
96 : (ctx->engine, _gpgme_passphrase_command_handler, ctx);
97 7 : if (err)
98 0 : return err;
99 : }
100 :
101 17 : _gpgme_engine_set_status_handler (ctx->engine,
102 : symmetric
103 : ? encrypt_sym_status_handler
104 : : encrypt_sign_status_handler,
105 : ctx);
106 :
107 17 : return _gpgme_engine_op_encrypt_sign (ctx->engine, recp, recpstring,
108 : flags, plain,
109 17 : cipher, ctx->use_armor,
110 : ctx /* FIXME */);
111 : }
112 :
113 :
114 : /* Old version of gpgme_op_encrypt_sign_ext_start w/o RECPSTRING. */
115 : gpgme_error_t
116 0 : gpgme_op_encrypt_sign_start (gpgme_ctx_t ctx, gpgme_key_t recp[],
117 : gpgme_encrypt_flags_t flags,
118 : gpgme_data_t plain, gpgme_data_t cipher)
119 : {
120 0 : return gpgme_op_encrypt_sign_ext_start (ctx, recp, NULL,
121 : flags, plain, cipher);
122 : }
123 :
124 :
125 : /* Old version of gpgme_op_encrypt_sign_ext w/o RECPSTRING. */
126 : gpgme_error_t
127 17 : gpgme_op_encrypt_sign (gpgme_ctx_t ctx, gpgme_key_t recp[],
128 : gpgme_encrypt_flags_t flags,
129 : gpgme_data_t plain, gpgme_data_t cipher)
130 : {
131 17 : return gpgme_op_encrypt_sign_ext (ctx, recp, NULL, flags, plain, cipher);
132 : }
133 :
134 :
135 : /* Encrypt plaintext PLAIN within CTX for the recipients RECP and
136 : * store the resulting ciphertext in CIPHER. Also sign the ciphertext
137 : * with the signers in CTX. */
138 : gpgme_error_t
139 17 : gpgme_op_encrypt_sign_ext (gpgme_ctx_t ctx, gpgme_key_t recp[],
140 : const char *recpstring,
141 : gpgme_encrypt_flags_t flags,
142 : gpgme_data_t plain, gpgme_data_t cipher)
143 : {
144 : gpgme_error_t err;
145 :
146 17 : TRACE_BEG3 (DEBUG_CTX, "gpgme_op_encrypt_sign", ctx,
147 : "flags=0x%x, plain=%p, cipher=%p", flags, plain, cipher);
148 :
149 17 : if (!ctx)
150 0 : return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
151 :
152 17 : if (_gpgme_debug_trace () && (recp || recpstring))
153 : {
154 14 : if (recp)
155 : {
156 14 : int i = 0;
157 :
158 51 : while (recp[i])
159 : {
160 23 : TRACE_LOG3 ("recipient[%i] = %p (%s)", i, recp[i],
161 : (recp[i]->subkeys && recp[i]->subkeys->fpr) ?
162 : recp[i]->subkeys->fpr : "invalid");
163 23 : i++;
164 : }
165 : }
166 : else
167 : {
168 0 : TRACE_LOG1 ("recipients = '%s'", recpstring);
169 : }
170 : }
171 :
172 17 : err = encrypt_sign_start (ctx, 1, recp, recpstring, flags, plain, cipher);
173 17 : if (!err)
174 17 : err = _gpgme_wait_one (ctx);
175 17 : return TRACE_ERR (err);
176 : }
177 :
178 :
179 : /* Encrypt plaintext PLAIN within CTX for the recipients RECP and
180 : store the resulting ciphertext in CIPHER. Also sign the ciphertext
181 : with the signers in CTX. */
182 : gpgme_error_t
183 0 : gpgme_op_encrypt_sign_ext_start (gpgme_ctx_t ctx, gpgme_key_t recp[],
184 : const char *recpstring,
185 : gpgme_encrypt_flags_t flags,
186 : gpgme_data_t plain, gpgme_data_t cipher)
187 : {
188 : gpgme_error_t err;
189 :
190 0 : TRACE_BEG3 (DEBUG_CTX, "gpgme_op_encrypt_sign_start", ctx,
191 : "flags=0x%x, plain=%p, cipher=%p", flags, plain, cipher);
192 :
193 0 : if (!ctx)
194 0 : return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
195 :
196 0 : if (_gpgme_debug_trace () && (recp || recpstring))
197 : {
198 0 : if (recp)
199 : {
200 0 : int i = 0;
201 :
202 0 : while (recp[i])
203 : {
204 0 : TRACE_LOG3 ("recipient[%i] = %p (%s)", i, recp[i],
205 : (recp[i]->subkeys && recp[i]->subkeys->fpr) ?
206 : recp[i]->subkeys->fpr : "invalid");
207 0 : i++;
208 : }
209 : }
210 : else
211 : {
212 0 : TRACE_LOG1 ("recipients = '%s'", recpstring);
213 : }
214 : }
215 :
216 0 : err = encrypt_sign_start (ctx, 0, recp, recpstring, flags, plain, cipher);
217 0 : return err;
218 : }
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