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->cipher_algo = GPGME_CIPHER_CAST5;
    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->interactive = val; break;
    case GPGME_CTRL_PIPEMODE:        c->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)+2);
        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->cipher_algo = GPGME_CIPHER_CAST5;
53	ctx->s2k.digest_algo = GPGME_MD_SHA1;
54	ctx->s2k.mode = GPGME_S2K_ITERSALTED;
55	*r_ctx = ctx;
56	return 0;
57	}
58
59	/**
60	* gpgme_release:
61	* @c: Context to be released.
62	*
63	* Release all resources associated with the given context.
64	**/
65	void
66	gpgme_release (gpgme_ctx_t ctx)
67	{
68	if (!ctx)
69	return;
70	_gpgme_gpg_release (&ctx->gpg);
71	_gpgme_release_result (ctx);
72	gpgme_key_release (ctx->tmp_key);
73	gpgme_data_release (ctx->help_data_1);
74	gpgme_data_release (ctx->notation);
75	gpgme_data_release (ctx->logging);
76	gpgme_signers_clear (ctx);
77	safe_free (ctx->signers);
78	safe_free (ctx->keygen_fpr);
79	safe_free (ctx->locusr);
80	safe_free (ctx->comment);
81	/* fixme: release the key_queue */
82	safe_free (ctx);
83	} /* gpgme_release */
84
85
86	void
87	_gpgme_release_result (gpgme_ctx_t c)
88	{
89	assert (c);
90	switch (c->result_type) {
91	case RESULT_TYPE_NONE:
92	break;
93
94	case RESULT_TYPE_EDITKEY:
95	_gpgme_release_editkey_result (c->result.editk);
96	break;
97
98	case RESULT_TYPE_ENCRYPT:
99	_gpgme_release_encrypt_result( c->result.encrypt );
100	break;
101
102	case RESULT_TYPE_VERIFY:
103	_gpgme_release_verify_result ( c->result.verify );
104	break;
105
106	case RESULT_TYPE_DECRYPT:
107	_gpgme_release_decrypt_result ( c->result.decrypt );
108	break;
109
110	case RESULT_TYPE_SIGN:
111	_gpgme_release_sign_result ( c->result.sign );
112	break;
113
114	case RESULT_TYPE_SIGN_ENCRYPT:
115	_gpgme_release_sign_encrypt_result( c->result.sign_enc );
116	break;
117
118	case RESULT_TYPE_IMPORT:
119	_gpgme_release_import_result( c->result.import );
120	break;
121
122	case RESULT_TYPE_SYMENC:
123	_gpgme_release_symenc_result( c->result.symenc );
124	break;
125	}
126
127	c->result.verify = NULL;
128	c->result_type = RESULT_TYPE_NONE;
129	} /* _gpgme_release_result */
130
131
132	/**
133	* gpgme_cancel:
134	* @c: the context
135	*
136	* Cancel the current operation. It is not guaranteed that it will work for
137	* all kinds of operations. It is especially useful in a passphrase callback
138	* to stop the system from asking another time for the passphrase.
139	**/
140	void
141	gpgme_cancel (gpgme_ctx_t c)
142	{
143	return_if_fail (c);
144	c->cancel = 1;
145	c->pending = 0;
146	} /* gpgme_cancel */
147
148
149	/**
150	* gpgme_get_notation:
151	* @c: the context
152	*
153	* If there is notation data available from the last signature check, this
154	* function may be used to return this notation data as a string. The string
155	* is a represantaton of that data embedded in a %<notation> container.
156	*
157	* Return value: An string or NULL if no notation data is available.
158	**/
159	char *
160	gpgme_get_notation (gpgme_ctx_t c)
161	{
162	if (!c \|\| !c->notation)
163	return NULL;
164	return _gpgme_data_get_as_string (c->notation);
165	} /* gpgme_get_notation */
166
167
168	char *
169	gpgme_get_logging (gpgme_ctx_t c)
170	{
171	if (!c \|\| !c->logging)
172	return NULL;
173	return _gpgme_data_get_as_string (c->logging);
174	}
175
176
177	void
178	gpgme_set_comment (gpgme_ctx_t c, const char * text)
179	{
180	if (!c)
181	return;
182	safe_free (c->comment);
183	c->comment = strdup (text);
184	if (!c->comment)
185	c->out_of_core = 1;
186	}
187
188
189	void
190	gpgme_set_homedir (gpgme_ctx_t c, const char *homedir)
191	{
192	if (!c)
193	return;
194	safe_free (c->homedir);
195	c->homedir = strdup (homedir);
196	if (!c->homedir)
197	c->out_of_core = 1;
198	}
199
200
201	/**
202	* gpgme_control:
203	* @c: the context
204	* @cmd: command to set
205	* @val: the value for the command.
206	*
207	* This is a replace for gpgme_set_xxx because in a DLL it's better to
208	* reduce the amount of functions.
209	**/
210	void *
211	gpgme_control( gpgme_ctx_t c, int cmd, int val )
212	{
213	if( !c )
214	return 0;
215
216	if( val == -1 ) {
217	switch( cmd ) {
218	case GPGME_CTRL_ARMOR: return (int *)c->use_armor;
219	case GPGME_CTRL_FPR: return c->keygen_fpr;
220	default: return NULL;
221	}
222	}
223
224	switch( cmd ) {
225
226	case GPGME_CTRL_S2K:
227	/* Pass S2K options down to GPG (no=0, yes=1) */
228	c->s2k.used = val;
229	break;
230
231	case GPGME_CTRL_S2K_MODE:
232	c->s2k.mode = val;
233	break;
234
235	case GPGME_CTRL_S2K_HASH:
236	c->s2k.digest_algo = val;
237	break;
238
239	case GPGME_CTRL_TEXTMODE:
240	/* Enable or disable the use of the special textmode. Textmode is for example
241	used for MIME (RFC2015) signatures. */
242	c->use_textmode = val;
243	break;
244
245	case GPGME_CTRL_LISTMODE:
246	/* This function changes the default behaviour of the keylisting functions.
247	Defines values for @mode are: %0 = normal, %1 = fast listing without
248	information about key validity. */
249	c->keylist_mode \|= val;
250	break;
251
252	case GPGME_CTRL_NO_COMPR:
253	c->no_compress = val;
254	c->force_mdc = val == 1? 1 : 0;
255	break;
256
257	case GPGME_CTRL_CIPHER:
258	if (val == -1) { /* disable it */
259	c->cipher_algo = -1;
260	break;
261	}
262	if (val < 1 \|\| val > 7) {
263	c->cipher_algo = GPGME_CIPHER_CAST5;
264	break;
265	}
266	c->cipher_algo = val;
267	break;
268
269	case GPGME_CTRL_TMPFILES: c->use_tmpfiles = val; break;
270	case GPGME_CTRL_WITH_SECRET_KEY: c->with_secret_key = val; break;
271	case GPGME_CTRL_FORCETRUST: c->force_trust = val; break;
272	case GPGME_CTRL_FORCEOPT: c->force_opt = val; break;
273	case GPGME_CTRL_FILE: c->use_file = val; break;
274	case GPGME_CTRL_THROWKEYID: c->use_throwkeyid = val; break;
275	case GPGME_CTRL_ARMOR: c->use_armor = val; break;
276	case GPGME_CTRL_INTERACTIVE: c->interactive = val; break;
277	case GPGME_CTRL_PIPEMODE: c->pipemode = val; break;
278	case GPGME_CTRL_LOGGING: c->use_logging = val; break;
279	case GPGME_CTRL_CB_VAL: c->cb.progress_value_int = val; break;
280	}
281
282	return NULL;
283	}
284
285	/**
286	* gpgme_set_passphrase_cb:
287	* @c: the context
288	* @cb: A callback function
289	* @cb_value: The value passed to the callback function
290	*
291	* This function sets a callback function to be used to pass a passphrase
292	* to gpg. The preferred way to handle this is by using the gpg-agent, but
293	* because that beast is not ready for real use, you can use this passphrase
294	* thing.
295	*
296	* The callback function is defined as:
297	* <literal>
298	* typedef const char (gpgme_passphrase_cb_t)(void*cb_value,
299	* const char *desc,
300	* void *r_hd);
301	* </literal>
302	* and called whenever gpgme needs a passphrase. DESC will have a nice
303	* text, to be used to prompt for the passphrase and R_HD is just a parameter
304	* to be used by the callback it self. Becuase the callback returns a const
305	* string, the callback might want to know when it can release resources
306	* assocated with that returned string; gpgme helps here by calling this
307	* passphrase callback with an DESC of %NULL as soon as it does not need
308	* the returned string anymore. The callback function might then choose
309	* to release resources depending on R_HD.
310	*
311	**/
312	void
313	gpgme_set_passphrase_cb (gpgme_ctx_t ctx, gpgme_passphrase_cb_t cb,
314	void * cb_value)
315	{
316	if (!ctx)
317	return;
318	ctx->cb.passphrase = cb;
319	ctx->cb.passphrase_value = cb_value;
320	} /* gpgme_set_passphrase_cb */
321
322
323	void
324	gpgme_set_interactive_cb (gpgme_ctx_t ctx, gpgme_interactive_cb_t cb,
325	void * cb_value)
326	{
327	if (!ctx)
328	return;
329	ctx->cb.interactiv = cb;
330	ctx->cb.interactiv_value = cb_value;
331	} /* gpgme_set_inteactive_cb */
332
333
334	/**
335	* gpgme_set_pprogress_cb:
336	* @c: the context
337	* @cb: A callback function
338	* @cb_value: The value passed to the callback function
339	*
340	* This function sets a callback function to be used as a progress indicator.
341	*
342	* The callback function is defined as:
343	* <literal>
344	* typedef void (gpgme_progress_cb_t) (void cb_value,
345	* const char * what, int type,
346	* int curretn, int total);
347	* </literal>
348	* For details on the progress events, see the entry for the PROGRESS
349	* status in the file doc/DETAILS of the GnuPG distribution.
350	**/
351	void
352	gpgme_set_progress_cb (gpgme_ctx_t ctx, gpgme_progress_cb_t cb,
353	void * cb_value)
354	{
355	if (!ctx)
356	return;
357	ctx->cb.progress = cb;
358	ctx->cb.progress_value = cb_value;
359	} /* gpgme_set_progress_cb */
360
361
362	void
363	gpgme_set_edit_ctx( gpgme_ctx_t ctx, void * edit_ctx, int edit_id )
364	{
365	if( !ctx )
366	return;
367	ctx->edit_opaque = edit_ctx;
368	ctx->edit_cmd = edit_id;
369	} /* gpgme_set_edit_ctx */
370
371
372	void
373	gpgme_set_list_options (gpgme_ctx_t ctx, int optid)
374	{
375	if (!ctx)
376	return;
377	ctx->list_opts \|= optid;
378	}
379
380
381	void
382	gpgme_set_cache_ctx (gpgme_ctx_t ctx, void * cache_ctx)
383	{
384	if( ctx )
385	ctx->key_lookup = cache_ctx;
386	} /* gpgme_set_cache_ctx */
387
388
389	void
390	gpgme_set_passphrase( gpgme_ctx_t ctx, const char * passphrase )
391	{
392	if( !ctx )
393	return;
394	ctx->passphrase_value = passphrase;
395	ctx->use_pass_fd = 1;
396	} /* gpgme_set_passphrase */
397
398
399	gpgme_error_t
400	_gpgme_add_passphrase( gpgme_ctx_t ctx )
401	{
402	gpgme_error_t err;
403	gpgme_data_t passphrase_fd;
404
405	if( !ctx )
406	return mk_error( Invalid_Value );
407	if( !ctx->passphrase_value \|\| !ctx->use_pass_fd )
408	return mk_error( General_Error );
409
410	err = gpgme_data_new_from_mem( &passphrase_fd, ctx->passphrase_value,
411	strlen( ctx->passphrase_value ), 0 );
412	if( err )
413	return err;
414	_gpgme_data_set_mode( passphrase_fd, GPGME_DATA_MODE_OUT );
415	_gpgme_gpg_add_arg( ctx->gpg, "--passphrase-fd" );
416	_gpgme_gpg_add_data( ctx->gpg, passphrase_fd, -2 );
417
418	return 0;
419	} /* _gpgme_add_passphrase */
420
421
422	void
423	gpgme_set_debug_mode( int val )
424	{
425	if( val )
426	putenv( "GPGME_DEBUG=5:gpgme.dbg" );
427	else
428	putenv( "GPGME_DEBUG=" );
429	} /* gpgme_set_debug_mode */
430
431
432	const char*
433	_gpgme_get_tmpfile( int input )
434	{
435	static char tmpfile[384];
436	char path[256];
437
438	GetTempPath( sizeof path -1, path );
439	_snprintf( tmpfile, sizeof tmpfile -1,
440	"%sgpgme%s.%u", path, input? "IN" : "OUT", getpid() );
441	return tmpfile;
442	} /* _gpgme_get_tmpfile */
443
444
445	static int
446	_gpgme_unlink( const char * file, int arg )
447	{
448	return unlink( file );
449	} /* _gpgme_unlink */
450
451
452	void
453	_gpgme_del_tmpfiles( gpgme_wipe_t wipe_fnc )
454	{
455	gpgme_wipe_t erase = wipe_fnc? wipe_fnc: (gpgme_wipe_t)_gpgme_unlink;
456
457	erase( _gpgme_get_tmpfile( 0 ), 1 );
458	erase( _gpgme_get_tmpfile( 1 ), 1 );
459	} /* _gpgme_del_tmpfiles */
460
461	void
462	gpgme_set_wipe_fnc( gpgme_ctx_t ctx, gpgme_wipe_t fnc )
463	{
464	if( ctx )
465	ctx->wipe_fnc = fnc;
466	} /* gpgme_set_wipe_fnc */
467
468
469	void
470	gpgme_set_local_user( gpgme_ctx_t ctx, const char * name )
471	{
472	if( ctx && name ) {
473	safe_free (ctx->locusr);
474	ctx->locusr = strdup( name );
475	}
476	} /* gpgme_set_local_user */
477
478
479	int
480	gpgme_get_process_rc (gpgme_ctx_t ctx)
481	{
482	if (!ctx)
483	return -1;
484	return (int)ctx->proc_rc;
485	} /* gpgme_get_process_rc */
486
487
488	void
489	_gpgme_progress_handler (gpgme_ctx_t ctx, char * args)
490	{
491	const char * name = args;
492	char * buf, * p;
493	char * what = NULL;
494	unsigned curr, total, i=0;
495
496	/* what */
497	p = strchr (args, '?');
498	if (!p)
499	return;
500	what = malloc (p-args+2);
501	if (!what) {
502	ctx->out_of_core = 1;
503	return;
504	}
505	while (name && *name != '?')
506	what[i++] = *name++;
507	what[i] = '\0';
508	/* XXX remove space at the end */
509	i = 0;
510	buf = args + (p-args);
511	while ((p = strsep (&buf, " ")) != NULL) {
512	switch (i) {
513	case 0:
514	break; /* type */
515	case 1:
516	curr = strtoul (p, NULL, 10);
517	break; /* current offset */
518	case 2:
519	total = strtoul (p, NULL, 10);
520	break; /* total */
521	}
522	i++;
523	}
524	if (what) {
525	ctx->cb.progress (ctx->cb.progress_value, what, 0, curr, total);
526	safe_free (what);
527	}
528	} /* _gpgme_progress_handler */
529
530
531	void
532	_gpgme_add_comment (gpgme_ctx_t ctx)
533	{
534	char * p;
535
536	if (ctx->comment)
537	{
538	p = calloc (1, strlen (ctx->comment)+2);
539	if (!p)
540	{
541	ctx->out_of_core = 1;
542	return;
543	}
544	_gpgme_gpg_add_arg (ctx->gpg, "--comment");
545	p[0] = '"';
546	strcpy (p+1, ctx->comment);
547	strcat (p, "\"");
548	_gpgme_gpg_add_arg (ctx->gpg, p);
549	safe_free (p);
550	}
551	}
552
553
554	gpgme_error_t
555	gpgme_check_logging (gpgme_ctx_t ctx)
556	{
557	char * buf;
558
559	if (!ctx)
560	return mk_error (Invalid_Value);
561	buf = gpgme_get_logging (ctx);
562	if (!buf)
563	return mk_error (No_Error);
564
565	/* XXX: this only works for English GPG output!!! */
566	if (strstr (buf, "gpg.conf:") && strstr (buf, "invalid option"))
567	return mk_error (Conf_InvOption);
568
569	free (buf);
570	return 0;
571	}
572
573
574	gpgme_error_t
575	gpgme_lib_init (void)
576	{
577	return 0;
578	}
579
580
581	void
582	gpgme_lib_cleanup (void)
583	{
584	debug_cleanup ();
585	rungpg_cleanup ();
586	io_cleanup ();
587	wait_cleanup ();
588	util_cleanup ();
589	}