trunk/MyGPGME/gpgme.c

/* gpgme.c -  My GnuPG Made Easy
 *      Copyright (C) 2000 Werner Koch (dd9jn)
 *      Copyright (C) 2001-2004 Timo Schulz
 *
 * This file is part of MyGPGME.
 *
 * MyGPGME 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.
 *
 * MyGPGME 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 <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <windows.h>
#include <process.h>

#include "util.h"
#include "context.h"
#include "ops.h"

/**
 * gpgme_new:
 * @r_ctx: Returns the new context
 * 
 * Create a new context to be used with most of the other GPGME
 * functions.  Use gpgme_release_contect() to release all resources
 *
 * Return value: An error code 
 **/
gpgme_error_t
gpgme_new (gpgme_ctx_t * r_ctx)
{
    gpgme_ctx_t ctx;

    if (!r_ctx)
        return mk_error (Invalid_Value);
    *r_ctx = NULL;
    ctx = calloc (1, sizeof *ctx);
    if (!ctx)
        return mk_error (Out_Of_Core);
    ctx->keylist_mode |= 8; /* include sigs */
    ctx->cipher_algo = GPGME_CIPHER_AES128;
    ctx->s2k.digest_algo = GPGME_MD_SHA1;
    ctx->s2k.mode = GPGME_S2K_ITERSALTED;
    *r_ctx = ctx;
    return 0;
}

/**
 * gpgme_release:
 * @c: Context to be released. 
 * 
 * Release all resources associated with the given context.
 **/
void
gpgme_release (gpgme_ctx_t ctx)
{
    if (!ctx)
        return;
    _gpgme_gpg_release (&ctx->gpg); 
    _gpgme_release_result (ctx);
    gpgme_key_release (ctx->tmp_key);
    gpgme_data_release (ctx->help_data_1);
    gpgme_data_release (ctx->notation);
    gpgme_data_release (ctx->logging);
    gpgme_signers_clear (ctx);
    safe_free (ctx->signers);
    safe_free (ctx->keygen_fpr);
    safe_free (ctx->locusr);
    safe_free (ctx->comment);
    /* fixme: release the key_queue */
    safe_free (ctx);
} /* gpgme_release */


void
_gpgme_release_result (gpgme_ctx_t c)
{
    assert (c);
    switch (c->result_type) {
    case RESULT_TYPE_NONE:
        break;

    case RESULT_TYPE_EDITKEY:
        _gpgme_release_editkey_result (c->result.editk);
        break;

    case RESULT_TYPE_ENCRYPT:             
        _gpgme_release_encrypt_result( c->result.encrypt );
        break;

    case RESULT_TYPE_VERIFY:
          _gpgme_release_verify_result (c->result.verify);
          break;

    case RESULT_TYPE_DECRYPT:
        _gpgme_release_decrypt_result (c->result.decrypt);
        break;

    case RESULT_TYPE_SIGN:
        _gpgme_release_sign_result ( c->result.sign );
        break;

    case RESULT_TYPE_SIGN_ENCRYPT:
        _gpgme_release_sign_encrypt_result( c->result.sign_enc );
        break;

    case RESULT_TYPE_IMPORT:
        _gpgme_release_import_result( c->result.import );
        break;

    case RESULT_TYPE_SYMENC:
        _gpgme_release_symenc_result( c->result.symenc );
        break;
    }   

    c->result.verify = NULL;
    c->result_type = RESULT_TYPE_NONE;
} /* _gpgme_release_result */


/**
 * gpgme_cancel:
 * @c: the context
 * 
 * Cancel the current operation.  It is not guaranteed that it will work for
 * all kinds of operations.  It is especially useful in a passphrase callback
 * to stop the system from asking another time for the passphrase.
 **/
void
gpgme_cancel (gpgme_ctx_t c)
{
    return_if_fail (c);
    c->cancel = 1;
    c->pending = 0;
} /* gpgme_cancel */


/**
 * gpgme_get_notation:
 * @c: the context 
 * 
 * If there is notation data available from the last signature check, this
 * function may be used to return this notation data as a string.  The string
 * is a represantaton of that data embedded in a %<notation> container.
 * 
 * Return value: An string or NULL if no notation data is available.
 **/
char *
gpgme_get_notation (gpgme_ctx_t c)
{
    if (!c  || !c->notation)
        return NULL;
    return _gpgme_data_get_as_string (c->notation);
} /* gpgme_get_notation */


char *
gpgme_get_logging (gpgme_ctx_t c)
{
    if (!c || !c->logging)
        return NULL;
    return _gpgme_data_get_as_string (c->logging);
}


void
gpgme_set_comment (gpgme_ctx_t c, const char * text)
{
    if (!c)
        return;
    safe_free (c->comment);
    c->comment = strdup (text);
    if (!c->comment)
        c->out_of_core = 1;
}


void
gpgme_set_homedir (gpgme_ctx_t c, const char *homedir)
{
    if (!c)
        return;
    safe_free (c->homedir);
    c->homedir = strdup (homedir);
    if (!c->homedir)
        c->out_of_core = 1;
}


/**
 * gpgme_control:
 * @c: the context
 * @cmd: command to set
 * @val: the value for the command.
 *
 * This is a replace for gpgme_set_xxx because in a DLL it's better to
 * reduce the amount of functions.
 **/
void *
gpgme_control( gpgme_ctx_t c, int cmd, int val )
{
    if( !c )
        return 0;

    if( val == -1 ) {
        switch( cmd ) {
        case GPGME_CTRL_ARMOR: return (int *)c->use_armor;
        case GPGME_CTRL_FPR:   return c->keygen_fpr;
        default:               return NULL;
        }
    }

    switch( cmd ) {

    case GPGME_CTRL_S2K:
        /* Pass S2K options down to GPG (no=0, yes=1) */
        c->s2k.used = val;
        break;

    case GPGME_CTRL_S2K_MODE:
        c->s2k.mode = val;
        break;

    case GPGME_CTRL_S2K_HASH:
        c->s2k.digest_algo = val;
        break;

    case GPGME_CTRL_TEXTMODE:
        /* Enable or disable the use of the special textmode.  Textmode is for example
            used for MIME (RFC2015) signatures. */
        c->use_textmode = val;
        break;
        
    case GPGME_CTRL_LISTMODE:
        /* This function changes the default behaviour of the keylisting functions.
        Defines values for @mode are: %0 = normal, %1 = fast listing without
        information about key validity. */
        c->keylist_mode |= val;
        break;

    case GPGME_CTRL_NO_COMPR:
        c->no_compress = val;       
        c->force_mdc = val == 1? 1 : 0;
        break;

    case GPGME_CTRL_CIPHER:
        if (val == -1) { /* disable it */
            c->cipher_algo = -1;
            break;
        }
        if (val < 1 || val > 7) {
            c->cipher_algo =  GPGME_CIPHER_CAST5;
            break;
        }
        c->cipher_algo = val;
        break;

    case GPGME_CTRL_TMPFILES:        c->use_tmpfiles = val; break;
    case GPGME_CTRL_WITH_SECRET_KEY: c->with_secret_key = val; break;
    case GPGME_CTRL_FORCETRUST:      c->force_trust = val; break;
    case GPGME_CTRL_FORCEOPT:        c->force_opt = val; break;
    case GPGME_CTRL_FILE:            c->use_file = val; break;
    case GPGME_CTRL_THROWKEYID:      c->use_throwkeyid = val; break;
    case GPGME_CTRL_ARMOR:           c->use_armor = val; break; 
    case GPGME_CTRL_INTERACTIVE:     c->use_interactive = val; break;
    case GPGME_CTRL_PIPEMODE:        c->use_pipemode = val; break;
    case GPGME_CTRL_LOGGING:         c->use_logging = val; break;
    case GPGME_CTRL_CB_VAL:          c->cb.progress_value_int = val; break;
    }

    return NULL;
}

/**
 * gpgme_set_passphrase_cb:
 * @c: the context 
 * @cb: A callback function
 * @cb_value: The value passed to the callback function
 * 
 * This function sets a callback function to be used to pass a passphrase
 * to gpg. The preferred way to handle this is by using the gpg-agent, but
 * because that beast is not ready for real use, you can use this passphrase
 * thing.
 *
 * The callback function is defined as:
 * <literal>
 * typedef const char *(*gpgme_passphrase_cb_t)(void*cb_value,
 *                                          const char *desc,
 *                                          void *r_hd);
 * </literal>
 * and called whenever gpgme needs a passphrase. DESC will have a nice
 * text, to be used to prompt for the passphrase and R_HD is just a parameter
 * to be used by the callback it self.  Becuase the callback returns a const
 * string, the callback might want to know when it can release resources
 * assocated with that returned string; gpgme helps here by calling this
 * passphrase callback with an DESC of %NULL as soon as it does not need
 * the returned string anymore.  The callback function might then choose
 * to release resources depending on R_HD.
 *
 **/
void
gpgme_set_passphrase_cb (gpgme_ctx_t ctx, gpgme_passphrase_cb_t cb, 
                         void * cb_value)
{
    if (!ctx)
        return;
    ctx->cb.passphrase = cb;
    ctx->cb.passphrase_value = cb_value;
} /* gpgme_set_passphrase_cb */


void
gpgme_set_interactive_cb (gpgme_ctx_t ctx, gpgme_interactive_cb_t cb, 
                          void * cb_value)
{
    if (!ctx)
        return;
    ctx->cb.interactiv = cb;
    ctx->cb.interactiv_value = cb_value;
} /* gpgme_set_inteactive_cb */


/**
 * gpgme_set_pprogress_cb:
 * @c: the context 
 * @cb: A callback function
 * @cb_value: The value passed to the callback function
 * 
 * This function sets a callback function to be used as a progress indicator.
 *
 * The callback function is defined as:
 * <literal>
 * typedef void (*gpgme_progress_cb_t) (void * cb_value,
 *                                  const char * what, int type,
 *                                  int curretn, int total);
 * </literal>
 * For details on the progress events, see the entry for the PROGRESS
 * status in the file doc/DETAILS of the GnuPG distribution.
 **/
void
gpgme_set_progress_cb (gpgme_ctx_t ctx, gpgme_progress_cb_t cb, 
                       void * cb_value)
{       
    if (!ctx)
        return;
    ctx->cb.progress = cb;
    ctx->cb.progress_value = cb_value;  
} /* gpgme_set_progress_cb */


void
gpgme_set_edit_ctx( gpgme_ctx_t ctx, void * edit_ctx, int edit_id )
{
    if( !ctx )
        return;
    ctx->edit_opaque = edit_ctx;
    ctx->edit_cmd = edit_id;
} /* gpgme_set_edit_ctx */


void
gpgme_set_list_options (gpgme_ctx_t ctx, int optid)
{
    if (!ctx)
        return;
    ctx->list_opts |= optid;
}


void
gpgme_set_cache_ctx (gpgme_ctx_t ctx, void * cache_ctx)
{       
    if( ctx )
        ctx->key_lookup = cache_ctx;
} /* gpgme_set_cache_ctx */


void
gpgme_set_passphrase( gpgme_ctx_t ctx, const char * passphrase )
{       
    if( !ctx )
        return;
    ctx->passphrase_value = passphrase;
    ctx->use_pass_fd = 1;
} /* gpgme_set_passphrase */


gpgme_error_t
_gpgme_add_passphrase( gpgme_ctx_t ctx )
{       
    gpgme_error_t err;
    gpgme_data_t passphrase_fd;

    if( !ctx )
        return mk_error( Invalid_Value );
    if( !ctx->passphrase_value || !ctx->use_pass_fd )
        return mk_error( General_Error );
    
    err = gpgme_data_new_from_mem( &passphrase_fd, ctx->passphrase_value,
                                    strlen( ctx->passphrase_value ), 0 );
    if( err )
        return err;
    _gpgme_data_set_mode( passphrase_fd, GPGME_DATA_MODE_OUT );
    _gpgme_gpg_add_arg( ctx->gpg, "--passphrase-fd" );
    _gpgme_gpg_add_data( ctx->gpg, passphrase_fd, -2 );

    return 0;
} /* _gpgme_add_passphrase */


void
gpgme_set_debug_mode( int val )
{       
    if( val )
        putenv( "GPGME_DEBUG=5:gpgme.dbg" );
    else
        putenv( "GPGME_DEBUG=" );
} /* gpgme_set_debug_mode */


const char*
_gpgme_get_tmpfile( int input )
{
    static char tmpfile[384];
    char path[256];

    GetTempPath( sizeof path -1, path );
    _snprintf( tmpfile, sizeof tmpfile -1, 
        "%sgpgme%s.%u", path, input? "IN" : "OUT", getpid() );
    return tmpfile;
} /* _gpgme_get_tmpfile */


static int
_gpgme_unlink( const char * file, int arg )
{
    return unlink( file );
} /* _gpgme_unlink */


void
_gpgme_del_tmpfiles( gpgme_wipe_t wipe_fnc )
{
    gpgme_wipe_t erase = wipe_fnc? wipe_fnc: (gpgme_wipe_t)_gpgme_unlink;

    erase( _gpgme_get_tmpfile( 0 ), 1 );        
    erase( _gpgme_get_tmpfile( 1 ), 1 );
} /* _gpgme_del_tmpfiles */

void
gpgme_set_wipe_fnc( gpgme_ctx_t ctx, gpgme_wipe_t fnc )
{
    if( ctx )
        ctx->wipe_fnc = fnc;
} /* gpgme_set_wipe_fnc */


void
gpgme_set_local_user( gpgme_ctx_t ctx, const char * name )
{
    if( ctx && name ) {
        safe_free (ctx->locusr);
        ctx->locusr = strdup( name );
    }
} /* gpgme_set_local_user */


int
gpgme_get_process_rc (gpgme_ctx_t ctx)
{
    if (!ctx)
        return -1;
    return (int)ctx->proc_rc;
} /* gpgme_get_process_rc */


void
_gpgme_progress_handler (gpgme_ctx_t ctx, char * args)
{
    const char * name = args;
    char * buf, * p;
    char * what = NULL;
    unsigned curr, total, i=0;

    /* what */
    p = strchr (args, '?');
    if (!p)
        return;
    what = malloc (p-args+2);
    if (!what) {
        ctx->out_of_core = 1;
        return;
    }
    while (name && *name != '?')
        what[i++] = *name++;
    what[i] = '\0';
    /* XXX remove space at the end */
    i = 0;
    buf = args + (p-args);
    while ((p = strsep (&buf, " ")) != NULL) {
        switch (i) {
        case 0: 
            break; /* type */
        case 1: 
            curr = strtoul (p, NULL, 10); 
            break; /* current offset */
        case 2: 
            total = strtoul (p, NULL, 10); 
            break; /* total */
        }
        i++;
    }
    if (what) {
        ctx->cb.progress (ctx->cb.progress_value, what, 0, curr, total);
        safe_free (what);
    }
} /* _gpgme_progress_handler */


void
_gpgme_add_comment (gpgme_ctx_t ctx)
{
    char * p;

    if (ctx->comment) {
        p = calloc (1, strlen (ctx->comment)+3);
        if (!p) {
            ctx->out_of_core = 1;
            return;
        }
        _gpgme_gpg_add_arg (ctx->gpg, "--comment");
        p[0] = '"';
        strcpy (p+1, ctx->comment);
        strcat (p, "\"");
        _gpgme_gpg_add_arg (ctx->gpg, p);
        safe_free (p);
    }
}


gpgme_error_t
gpgme_check_logging (gpgme_ctx_t ctx)
{
    char * buf;

    if (!ctx)
        return mk_error (Invalid_Value);
    buf = gpgme_get_logging (ctx);
    if (!buf)
        return mk_error (No_Error);

    /* XXX: this only works for English GPG output!!! */
    if (strstr (buf, "gpg.conf:") && strstr (buf, "invalid option"))
        return mk_error (Conf_InvOption);
    
    free (buf);
    return 0;
}


gpgme_error_t
gpgme_lib_init (void)
{
    return 0;
}


void
gpgme_lib_cleanup (void)
{
    debug_cleanup ();
    rungpg_cleanup ();
    io_cleanup ();
    wait_cleanup ();
    util_cleanup ();
}
1	/* gpgme.c - My GnuPG Made Easy
2	* Copyright (C) 2000 Werner Koch (dd9jn)
3	* Copyright (C) 2001-2004 Timo Schulz
4	*
5	* This file is part of MyGPGME.
6	*
7	* MyGPGME is free software; you can redistribute it and/or modify
8	* it under the terms of the GNU General Public License as published by
9	* the Free Software Foundation; either version 2 of the License, or
10	* (at your option) any later version.
11	*
12	* MyGPGME is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	* GNU General Public License for more details.
16	*
17	* You should have received a copy of the GNU General Public License
18	* along with this program; if not, write to the Free Software
19	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
20	*/
21
22	#include <stdio.h>
23	#include <stdlib.h>
24	#include <assert.h>
25	#include <windows.h>
26	#include <process.h>
27
28	#include "util.h"
29	#include "context.h"
30	#include "ops.h"
31
32	/**
33	* gpgme_new:
34	* @r_ctx: Returns the new context
35	*
36	* Create a new context to be used with most of the other GPGME
37	* functions. Use gpgme_release_contect() to release all resources
38	*
39	* Return value: An error code
40	**/
41	gpgme_error_t
42	gpgme_new (gpgme_ctx_t * r_ctx)
43	{
44	gpgme_ctx_t ctx;
45
46	if (!r_ctx)
47	return mk_error (Invalid_Value);
48	*r_ctx = NULL;
49	ctx = calloc (1, sizeof *ctx);
50	if (!ctx)
51	return mk_error (Out_Of_Core);
52	ctx->keylist_mode \|= 8; /* include sigs */
53	ctx->cipher_algo = GPGME_CIPHER_AES128;
54	ctx->s2k.digest_algo = GPGME_MD_SHA1;
55	ctx->s2k.mode = GPGME_S2K_ITERSALTED;
56	*r_ctx = ctx;
57	return 0;
58	}
59
60	/**
61	* gpgme_release:
62	* @c: Context to be released.
63	*
64	* Release all resources associated with the given context.
65	**/
66	void
67	gpgme_release (gpgme_ctx_t ctx)
68	{
69	if (!ctx)
70	return;
71	_gpgme_gpg_release (&ctx->gpg);
72	_gpgme_release_result (ctx);
73	gpgme_key_release (ctx->tmp_key);
74	gpgme_data_release (ctx->help_data_1);
75	gpgme_data_release (ctx->notation);
76	gpgme_data_release (ctx->logging);
77	gpgme_signers_clear (ctx);
78	safe_free (ctx->signers);
79	safe_free (ctx->keygen_fpr);
80	safe_free (ctx->locusr);
81	safe_free (ctx->comment);
82	/* fixme: release the key_queue */
83	safe_free (ctx);
84	} /* gpgme_release */
85
86
87	void
88	_gpgme_release_result (gpgme_ctx_t c)
89	{
90	assert (c);
91	switch (c->result_type) {
92	case RESULT_TYPE_NONE:
93	break;
94
95	case RESULT_TYPE_EDITKEY:
96	_gpgme_release_editkey_result (c->result.editk);
97	break;
98
99	case RESULT_TYPE_ENCRYPT:
100	_gpgme_release_encrypt_result( c->result.encrypt );
101	break;
102
103	case RESULT_TYPE_VERIFY:
104	_gpgme_release_verify_result (c->result.verify);
105	break;
106
107	case RESULT_TYPE_DECRYPT:
108	_gpgme_release_decrypt_result (c->result.decrypt);
109	break;
110
111	case RESULT_TYPE_SIGN:
112	_gpgme_release_sign_result ( c->result.sign );
113	break;
114
115	case RESULT_TYPE_SIGN_ENCRYPT:
116	_gpgme_release_sign_encrypt_result( c->result.sign_enc );
117	break;
118
119	case RESULT_TYPE_IMPORT:
120	_gpgme_release_import_result( c->result.import );
121	break;
122
123	case RESULT_TYPE_SYMENC:
124	_gpgme_release_symenc_result( c->result.symenc );
125	break;
126	}
127
128	c->result.verify = NULL;
129	c->result_type = RESULT_TYPE_NONE;
130	} /* _gpgme_release_result */
131
132
133	/**
134	* gpgme_cancel:
135	* @c: the context
136	*
137	* Cancel the current operation. It is not guaranteed that it will work for
138	* all kinds of operations. It is especially useful in a passphrase callback
139	* to stop the system from asking another time for the passphrase.
140	**/
141	void
142	gpgme_cancel (gpgme_ctx_t c)
143	{
144	return_if_fail (c);
145	c->cancel = 1;
146	c->pending = 0;
147	} /* gpgme_cancel */
148
149
150	/**
151	* gpgme_get_notation:
152	* @c: the context
153	*
154	* If there is notation data available from the last signature check, this
155	* function may be used to return this notation data as a string. The string
156	* is a represantaton of that data embedded in a %<notation> container.
157	*
158	* Return value: An string or NULL if no notation data is available.
159	**/
160	char *
161	gpgme_get_notation (gpgme_ctx_t c)
162	{
163	if (!c \|\| !c->notation)
164	return NULL;
165	return _gpgme_data_get_as_string (c->notation);
166	} /* gpgme_get_notation */
167
168
169	char *
170	gpgme_get_logging (gpgme_ctx_t c)
171	{
172	if (!c \|\| !c->logging)
173	return NULL;
174	return _gpgme_data_get_as_string (c->logging);
175	}
176
177
178	void
179	gpgme_set_comment (gpgme_ctx_t c, const char * text)
180	{
181	if (!c)
182	return;
183	safe_free (c->comment);
184	c->comment = strdup (text);
185	if (!c->comment)
186	c->out_of_core = 1;
187	}
188
189
190	void
191	gpgme_set_homedir (gpgme_ctx_t c, const char *homedir)
192	{
193	if (!c)
194	return;
195	safe_free (c->homedir);
196	c->homedir = strdup (homedir);
197	if (!c->homedir)
198	c->out_of_core = 1;
199	}
200
201
202	/**
203	* gpgme_control:
204	* @c: the context
205	* @cmd: command to set
206	* @val: the value for the command.
207	*
208	* This is a replace for gpgme_set_xxx because in a DLL it's better to
209	* reduce the amount of functions.
210	**/
211	void *
212	gpgme_control( gpgme_ctx_t c, int cmd, int val )
213	{
214	if( !c )
215	return 0;
216
217	if( val == -1 ) {
218	switch( cmd ) {
219	case GPGME_CTRL_ARMOR: return (int *)c->use_armor;
220	case GPGME_CTRL_FPR: return c->keygen_fpr;
221	default: return NULL;
222	}
223	}
224
225	switch( cmd ) {
226
227	case GPGME_CTRL_S2K:
228	/* Pass S2K options down to GPG (no=0, yes=1) */
229	c->s2k.used = val;
230	break;
231
232	case GPGME_CTRL_S2K_MODE:
233	c->s2k.mode = val;
234	break;
235
236	case GPGME_CTRL_S2K_HASH:
237	c->s2k.digest_algo = val;
238	break;
239
240	case GPGME_CTRL_TEXTMODE:
241	/* Enable or disable the use of the special textmode. Textmode is for example
242	used for MIME (RFC2015) signatures. */
243	c->use_textmode = val;
244	break;
245
246	case GPGME_CTRL_LISTMODE:
247	/* This function changes the default behaviour of the keylisting functions.
248	Defines values for @mode are: %0 = normal, %1 = fast listing without
249	information about key validity. */
250	c->keylist_mode \|= val;
251	break;
252
253	case GPGME_CTRL_NO_COMPR:
254	c->no_compress = val;
255	c->force_mdc = val == 1? 1 : 0;
256	break;
257
258	case GPGME_CTRL_CIPHER:
259	if (val == -1) { /* disable it */
260	c->cipher_algo = -1;
261	break;
262	}
263	if (val < 1 \|\| val > 7) {
264	c->cipher_algo = GPGME_CIPHER_CAST5;
265	break;
266	}
267	c->cipher_algo = val;
268	break;
269
270	case GPGME_CTRL_TMPFILES: c->use_tmpfiles = val; break;
271	case GPGME_CTRL_WITH_SECRET_KEY: c->with_secret_key = val; break;
272	case GPGME_CTRL_FORCETRUST: c->force_trust = val; break;
273	case GPGME_CTRL_FORCEOPT: c->force_opt = val; break;
274	case GPGME_CTRL_FILE: c->use_file = val; break;
275	case GPGME_CTRL_THROWKEYID: c->use_throwkeyid = val; break;
276	case GPGME_CTRL_ARMOR: c->use_armor = val; break;
277	case GPGME_CTRL_INTERACTIVE: c->use_interactive = val; break;
278	case GPGME_CTRL_PIPEMODE: c->use_pipemode = val; break;
279	case GPGME_CTRL_LOGGING: c->use_logging = val; break;
280	case GPGME_CTRL_CB_VAL: c->cb.progress_value_int = val; break;
281	}
282
283	return NULL;
284	}
285
286	/**
287	* gpgme_set_passphrase_cb:
288	* @c: the context
289	* @cb: A callback function
290	* @cb_value: The value passed to the callback function
291	*
292	* This function sets a callback function to be used to pass a passphrase
293	* to gpg. The preferred way to handle this is by using the gpg-agent, but
294	* because that beast is not ready for real use, you can use this passphrase
295	* thing.
296	*
297	* The callback function is defined as:
298	* <literal>
299	* typedef const char (gpgme_passphrase_cb_t)(void*cb_value,
300	* const char *desc,
301	* void *r_hd);
302	* </literal>
303	* and called whenever gpgme needs a passphrase. DESC will have a nice
304	* text, to be used to prompt for the passphrase and R_HD is just a parameter
305	* to be used by the callback it self. Becuase the callback returns a const
306	* string, the callback might want to know when it can release resources
307	* assocated with that returned string; gpgme helps here by calling this
308	* passphrase callback with an DESC of %NULL as soon as it does not need
309	* the returned string anymore. The callback function might then choose
310	* to release resources depending on R_HD.
311	*
312	**/
313	void
314	gpgme_set_passphrase_cb (gpgme_ctx_t ctx, gpgme_passphrase_cb_t cb,
315	void * cb_value)
316	{
317	if (!ctx)
318	return;
319	ctx->cb.passphrase = cb;
320	ctx->cb.passphrase_value = cb_value;
321	} /* gpgme_set_passphrase_cb */
322
323
324	void
325	gpgme_set_interactive_cb (gpgme_ctx_t ctx, gpgme_interactive_cb_t cb,
326	void * cb_value)
327	{
328	if (!ctx)
329	return;
330	ctx->cb.interactiv = cb;
331	ctx->cb.interactiv_value = cb_value;
332	} /* gpgme_set_inteactive_cb */
333
334
335	/**
336	* gpgme_set_pprogress_cb:
337	* @c: the context
338	* @cb: A callback function
339	* @cb_value: The value passed to the callback function
340	*
341	* This function sets a callback function to be used as a progress indicator.
342	*
343	* The callback function is defined as:
344	* <literal>
345	* typedef void (gpgme_progress_cb_t) (void cb_value,
346	* const char * what, int type,
347	* int curretn, int total);
348	* </literal>
349	* For details on the progress events, see the entry for the PROGRESS
350	* status in the file doc/DETAILS of the GnuPG distribution.
351	**/
352	void
353	gpgme_set_progress_cb (gpgme_ctx_t ctx, gpgme_progress_cb_t cb,
354	void * cb_value)
355	{
356	if (!ctx)
357	return;
358	ctx->cb.progress = cb;
359	ctx->cb.progress_value = cb_value;
360	} /* gpgme_set_progress_cb */
361
362
363	void
364	gpgme_set_edit_ctx( gpgme_ctx_t ctx, void * edit_ctx, int edit_id )
365	{
366	if( !ctx )
367	return;
368	ctx->edit_opaque = edit_ctx;
369	ctx->edit_cmd = edit_id;
370	} /* gpgme_set_edit_ctx */
371
372
373	void
374	gpgme_set_list_options (gpgme_ctx_t ctx, int optid)
375	{
376	if (!ctx)
377	return;
378	ctx->list_opts \|= optid;
379	}
380
381
382	void
383	gpgme_set_cache_ctx (gpgme_ctx_t ctx, void * cache_ctx)
384	{
385	if( ctx )
386	ctx->key_lookup = cache_ctx;
387	} /* gpgme_set_cache_ctx */
388
389
390	void
391	gpgme_set_passphrase( gpgme_ctx_t ctx, const char * passphrase )
392	{
393	if( !ctx )
394	return;
395	ctx->passphrase_value = passphrase;
396	ctx->use_pass_fd = 1;
397	} /* gpgme_set_passphrase */
398
399
400	gpgme_error_t
401	_gpgme_add_passphrase( gpgme_ctx_t ctx )
402	{
403	gpgme_error_t err;
404	gpgme_data_t passphrase_fd;
405
406	if( !ctx )
407	return mk_error( Invalid_Value );
408	if( !ctx->passphrase_value \|\| !ctx->use_pass_fd )
409	return mk_error( General_Error );
410
411	err = gpgme_data_new_from_mem( &passphrase_fd, ctx->passphrase_value,
412	strlen( ctx->passphrase_value ), 0 );
413	if( err )
414	return err;
415	_gpgme_data_set_mode( passphrase_fd, GPGME_DATA_MODE_OUT );
416	_gpgme_gpg_add_arg( ctx->gpg, "--passphrase-fd" );
417	_gpgme_gpg_add_data( ctx->gpg, passphrase_fd, -2 );
418
419	return 0;
420	} /* _gpgme_add_passphrase */
421
422
423	void
424	gpgme_set_debug_mode( int val )
425	{
426	if( val )
427	putenv( "GPGME_DEBUG=5:gpgme.dbg" );
428	else
429	putenv( "GPGME_DEBUG=" );
430	} /* gpgme_set_debug_mode */
431
432
433	const char*
434	_gpgme_get_tmpfile( int input )
435	{
436	static char tmpfile[384];
437	char path[256];
438
439	GetTempPath( sizeof path -1, path );
440	_snprintf( tmpfile, sizeof tmpfile -1,
441	"%sgpgme%s.%u", path, input? "IN" : "OUT", getpid() );
442	return tmpfile;
443	} /* _gpgme_get_tmpfile */
444
445
446	static int
447	_gpgme_unlink( const char * file, int arg )
448	{
449	return unlink( file );
450	} /* _gpgme_unlink */
451
452
453	void
454	_gpgme_del_tmpfiles( gpgme_wipe_t wipe_fnc )
455	{
456	gpgme_wipe_t erase = wipe_fnc? wipe_fnc: (gpgme_wipe_t)_gpgme_unlink;
457
458	erase( _gpgme_get_tmpfile( 0 ), 1 );
459	erase( _gpgme_get_tmpfile( 1 ), 1 );
460	} /* _gpgme_del_tmpfiles */
461
462	void
463	gpgme_set_wipe_fnc( gpgme_ctx_t ctx, gpgme_wipe_t fnc )
464	{
465	if( ctx )
466	ctx->wipe_fnc = fnc;
467	} /* gpgme_set_wipe_fnc */
468
469
470	void
471	gpgme_set_local_user( gpgme_ctx_t ctx, const char * name )
472	{
473	if( ctx && name ) {
474	safe_free (ctx->locusr);
475	ctx->locusr = strdup( name );
476	}
477	} /* gpgme_set_local_user */
478
479
480	int
481	gpgme_get_process_rc (gpgme_ctx_t ctx)
482	{
483	if (!ctx)
484	return -1;
485	return (int)ctx->proc_rc;
486	} /* gpgme_get_process_rc */
487
488
489	void
490	_gpgme_progress_handler (gpgme_ctx_t ctx, char * args)
491	{
492	const char * name = args;
493	char * buf, * p;
494	char * what = NULL;
495	unsigned curr, total, i=0;
496
497	/* what */
498	p = strchr (args, '?');
499	if (!p)
500	return;
501	what = malloc (p-args+2);
502	if (!what) {
503	ctx->out_of_core = 1;
504	return;
505	}
506	while (name && *name != '?')
507	what[i++] = *name++;
508	what[i] = '\0';
509	/* XXX remove space at the end */
510	i = 0;
511	buf = args + (p-args);
512	while ((p = strsep (&buf, " ")) != NULL) {
513	switch (i) {
514	case 0:
515	break; /* type */
516	case 1:
517	curr = strtoul (p, NULL, 10);
518	break; /* current offset */
519	case 2:
520	total = strtoul (p, NULL, 10);
521	break; /* total */
522	}
523	i++;
524	}
525	if (what) {
526	ctx->cb.progress (ctx->cb.progress_value, what, 0, curr, total);
527	safe_free (what);
528	}
529	} /* _gpgme_progress_handler */
530
531
532	void
533	_gpgme_add_comment (gpgme_ctx_t ctx)
534	{
535	char * p;
536
537	if (ctx->comment) {
538	p = calloc (1, strlen (ctx->comment)+3);
539	if (!p) {
540	ctx->out_of_core = 1;
541	return;
542	}
543	_gpgme_gpg_add_arg (ctx->gpg, "--comment");
544	p[0] = '"';
545	strcpy (p+1, ctx->comment);
546	strcat (p, "\"");
547	_gpgme_gpg_add_arg (ctx->gpg, p);
548	safe_free (p);
549	}
550	}
551
552
553	gpgme_error_t
554	gpgme_check_logging (gpgme_ctx_t ctx)
555	{
556	char * buf;
557
558	if (!ctx)
559	return mk_error (Invalid_Value);
560	buf = gpgme_get_logging (ctx);
561	if (!buf)
562	return mk_error (No_Error);
563
564	/* XXX: this only works for English GPG output!!! */
565	if (strstr (buf, "gpg.conf:") && strstr (buf, "invalid option"))
566	return mk_error (Conf_InvOption);
567
568	free (buf);
569	return 0;
570	}
571
572
573	gpgme_error_t
574	gpgme_lib_init (void)
575	{
576	return 0;
577	}
578
579
580	void
581	gpgme_lib_cleanup (void)
582	{
583	debug_cleanup ();
584	rungpg_cleanup ();
585	io_cleanup ();
586	wait_cleanup ();
587	util_cleanup ();
588	}