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tdepim/libkdenetwork/libgpgme-copy/gpgme/rungpg.c

2112 lines
46 KiB

/* rungpg.c - Gpg Engine.
Copyright (C) 2000 Werner Koch (dd9jn)
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 g10 Code GmbH
This file is part of GPGME.
GPGME is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <unistd.h>
#include <locale.h>
#include "gpgme.h"
#include "util.h"
#include "ops.h"
#include "wait.h"
#include "context.h" /*temp hack until we have GpmeData methods to do I/O */
#include "priv-io.h"
#include "sema.h"
#include "debug.h"
#include "status-table.h"
#include "engine-backend.h"
/* This type is used to build a list of gpg arguments and data
sources/sinks. */
struct arg_and_data_s
{
struct arg_and_data_s *next;
gpgme_data_t data; /* If this is not NULL, use arg below. */
int inbound; /* True if this is used for reading from gpg. */
int dup_to;
int print_fd; /* Print the fd number and not the special form of it. */
char arg[1]; /* Used if data above is not used. */
};
struct fd_data_map_s
{
gpgme_data_t data;
int inbound; /* true if this is used for reading from gpg */
int dup_to;
int fd; /* the fd to use */
int peer_fd; /* the outher side of the pipe */
void *tag;
};
typedef gpgme_error_t (*colon_preprocessor_t) (char *line, char **rline);
struct engine_gpg
{
char *file_name;
char *lc_messages;
char *lc_ctype;
struct arg_and_data_s *arglist;
struct arg_and_data_s **argtail;
struct
{
int fd[2];
size_t bufsize;
char *buffer;
size_t readpos;
int eof;
engine_status_handler_t fnc;
void *fnc_value;
void *tag;
} status;
/* This is a kludge - see the comment at colon_line_handler. */
struct
{
int fd[2];
size_t bufsize;
char *buffer;
size_t readpos;
int eof;
engine_colon_line_handler_t fnc; /* this indicate use of this structrue */
void *fnc_value;
void *tag;
colon_preprocessor_t preprocess_fnc;
} colon;
char **argv;
struct fd_data_map_s *fd_data_map;
/* stuff needed for interactive (command) mode */
struct
{
int used;
int fd;
void *cb_data;
int idx; /* Index in fd_data_map */
gpgme_status_code_t code; /* last code */
char *keyword; /* what has been requested (malloced) */
engine_command_handler_t fnc;
void *fnc_value;
/* The kludges never end. This is used to couple command handlers
with output data in edit key mode. */
gpgme_data_t linked_data;
int linked_idx;
} cmd;
struct gpgme_io_cbs io_cbs;
};
typedef struct engine_gpg *engine_gpg_t;
static void
gpg_io_event (void *engine, gpgme_event_io_t type, void *type_data)
{
engine_gpg_t gpg = engine;
if (gpg->io_cbs.event)
(*gpg->io_cbs.event) (gpg->io_cbs.event_priv, type, type_data);
}
static void
close_notify_handler (int fd, void *opaque)
{
engine_gpg_t gpg = opaque;
assert (fd != -1);
if (gpg->status.fd[0] == fd)
{
if (gpg->status.tag)
(*gpg->io_cbs.remove) (gpg->status.tag);
gpg->status.fd[0] = -1;
}
else if (gpg->status.fd[1] == fd)
gpg->status.fd[1] = -1;
else if (gpg->colon.fd[0] == fd)
{
if (gpg->colon.tag)
(*gpg->io_cbs.remove) (gpg->colon.tag);
gpg->colon.fd[0] = -1;
}
else if (gpg->colon.fd[1] == fd)
gpg->colon.fd[1] = -1;
else if (gpg->fd_data_map)
{
int i;
for (i = 0; gpg->fd_data_map[i].data; i++)
{
if (gpg->fd_data_map[i].fd == fd)
{
if (gpg->fd_data_map[i].tag)
(*gpg->io_cbs.remove) (gpg->fd_data_map[i].tag);
gpg->fd_data_map[i].fd = -1;
break;
}
if (gpg->fd_data_map[i].peer_fd == fd)
{
gpg->fd_data_map[i].peer_fd = -1;
break;
}
}
}
}
/* If FRONT is true, push at the front of the list. Use this for
options added late in the process. */
static gpgme_error_t
add_arg_ext (engine_gpg_t gpg, const char *arg, int front)
{
struct arg_and_data_s *a;
assert (gpg);
assert (arg);
a = malloc (sizeof *a + strlen (arg));
if (!a)
return gpg_error_from_errno (errno);
a->data = NULL;
a->dup_to = -1;
strcpy (a->arg, arg);
if (front)
{
a->next = gpg->arglist;
if (!gpg->arglist)
{
/* If this is the first argument, we need to update the tail
pointer. */
gpg->argtail = &a->next;
}
gpg->arglist = a;
}
else
{
a->next = NULL;
*gpg->argtail = a;
gpg->argtail = &a->next;
}
return 0;
}
static gpgme_error_t
add_arg (engine_gpg_t gpg, const char *arg)
{
return add_arg_ext (gpg, arg, 0);
}
static gpgme_error_t
add_data (engine_gpg_t gpg, gpgme_data_t data, int dup_to, int inbound)
{
struct arg_and_data_s *a;
assert (gpg);
assert (data);
a = malloc (sizeof *a - 1);
if (!a)
return gpg_error_from_errno (errno);
a->next = NULL;
a->data = data;
a->inbound = inbound;
if (dup_to == -2)
{
a->print_fd = 1;
a->dup_to = -1;
}
else
{
a->print_fd = 0;
a->dup_to = dup_to;
}
*gpg->argtail = a;
gpg->argtail = &a->next;
return 0;
}
static char *
gpg_get_version (const char *file_name)
{
return _gpgme_get_program_version (file_name ? file_name
: _gpgme_get_gpg_path ());
}
static const char *
gpg_get_req_version (void)
{
return NEED_GPG_VERSION;
}
static void
free_argv (char **argv)
{
int i;
for (i = 0; argv[i]; i++)
free (argv[i]);
free (argv);
}
static void
free_fd_data_map (struct fd_data_map_s *fd_data_map)
{
int i;
if (!fd_data_map)
return;
for (i = 0; fd_data_map[i].data; i++)
{
if (fd_data_map[i].fd != -1)
_gpgme_io_close (fd_data_map[i].fd);
if (fd_data_map[i].peer_fd != -1)
_gpgme_io_close (fd_data_map[i].peer_fd);
/* Don't release data because this is only a reference. */
}
free (fd_data_map);
}
static gpgme_error_t
gpg_cancel (void *engine)
{
engine_gpg_t gpg = engine;
if (!gpg)
return gpg_error (GPG_ERR_INV_VALUE);
if (gpg->status.fd[0] != -1)
_gpgme_io_close (gpg->status.fd[0]);
if (gpg->status.fd[1] != -1)
_gpgme_io_close (gpg->status.fd[1]);
if (gpg->colon.fd[0] != -1)
_gpgme_io_close (gpg->colon.fd[0]);
if (gpg->colon.fd[1] != -1)
_gpgme_io_close (gpg->colon.fd[1]);
if (gpg->fd_data_map)
{
free_fd_data_map (gpg->fd_data_map);
gpg->fd_data_map = NULL;
}
if (gpg->cmd.fd != -1)
_gpgme_io_close (gpg->cmd.fd);
return 0;
}
static void
gpg_release (void *engine)
{
engine_gpg_t gpg = engine;
if (!gpg)
return;
gpg_cancel (engine);
if (gpg->file_name)
free (gpg->file_name);
if (gpg->lc_messages)
free (gpg->lc_messages);
if (gpg->lc_ctype)
free (gpg->lc_ctype);
while (gpg->arglist)
{
struct arg_and_data_s *next = gpg->arglist->next;
if (gpg->arglist)
free (gpg->arglist);
gpg->arglist = next;
}
if (gpg->status.buffer)
free (gpg->status.buffer);
if (gpg->colon.buffer)
free (gpg->colon.buffer);
if (gpg->argv)
free_argv (gpg->argv);
if (gpg->cmd.keyword)
free (gpg->cmd.keyword);
free (gpg);
}
static gpgme_error_t
gpg_new (void **engine, const char *file_name, const char *home_dir)
{
engine_gpg_t gpg;
gpgme_error_t rc = 0;
char *dft_display = NULL;
char dft_ttyname[64];
char *dft_ttytype = NULL;
gpg = calloc (1, sizeof *gpg);
if (!gpg)
return gpg_error_from_errno (errno);
if (file_name)
{
gpg->file_name = strdup (file_name);
if (!gpg->file_name)
{
rc = gpg_error_from_errno (errno);
goto leave;
}
}
gpg->argtail = &gpg->arglist;
gpg->status.fd[0] = -1;
gpg->status.fd[1] = -1;
gpg->colon.fd[0] = -1;
gpg->colon.fd[1] = -1;
gpg->cmd.fd = -1;
gpg->cmd.idx = -1;
gpg->cmd.linked_data = NULL;
gpg->cmd.linked_idx = -1;
/* Allocate the read buffer for the status pipe. */
gpg->status.bufsize = 1024;
gpg->status.readpos = 0;
gpg->status.buffer = malloc (gpg->status.bufsize);
if (!gpg->status.buffer)
{
rc = gpg_error_from_errno (errno);
goto leave;
}
/* In any case we need a status pipe - create it right here and
don't handle it with our generic gpgme_data_t mechanism. */
if (_gpgme_io_pipe (gpg->status.fd, 1) == -1)
{
rc = gpg_error_from_errno (errno);
goto leave;
}
if (_gpgme_io_set_close_notify (gpg->status.fd[0],
close_notify_handler, gpg)
|| _gpgme_io_set_close_notify (gpg->status.fd[1],
close_notify_handler, gpg))
{
rc = gpg_error (GPG_ERR_GENERAL);
goto leave;
}
gpg->status.eof = 0;
if (home_dir)
{
rc = add_arg (gpg, "--homedir");
if (!rc)
rc = add_arg (gpg, home_dir);
if (rc)
goto leave;
}
rc = add_arg (gpg, "--status-fd");
if (rc)
goto leave;
{
char buf[25];
_gpgme_io_fd2str (buf, sizeof (buf), gpg->status.fd[1]);
rc = add_arg (gpg, buf);
if (rc)
goto leave;
}
rc = add_arg (gpg, "--no-tty");
if (!rc)
rc = add_arg (gpg, "--charset");
if (!rc)
rc = add_arg (gpg, "utf8");
if (!rc)
rc = add_arg (gpg, "--enable-progress-filter");
if (rc)
goto leave;
rc = _gpgme_getenv ("DISPLAY", &dft_display);
if (dft_display)
{
rc = add_arg (gpg, "--display");
if (!rc)
rc = add_arg (gpg, dft_display);
free (dft_display);
}
if (rc)
goto leave;
if (isatty (1))
{
if (ttyname_r (1, dft_ttyname, sizeof (dft_ttyname)))
rc = gpg_error_from_errno (errno);
else
{
rc = add_arg (gpg, "--ttyname");
if (!rc)
rc = add_arg (gpg, dft_ttyname);
if (!rc)
{
rc = _gpgme_getenv ("TERM", &dft_ttytype);
if (!rc)
goto leave;
rc = add_arg (gpg, "--ttytype");
if (!rc)
rc = add_arg (gpg, dft_ttytype);
free (dft_ttytype);
}
}
if (rc)
goto leave;
}
leave:
if (rc)
gpg_release (gpg);
else
*engine = gpg;
return rc;
}
static gpgme_error_t
gpg_set_locale (void *engine, int category, const char *value)
{
engine_gpg_t gpg = engine;
if (category == LC_CTYPE)
{
if (gpg->lc_ctype)
{
free (gpg->lc_ctype);
gpg->lc_ctype = NULL;
}
if (value)
{
gpg->lc_ctype = strdup (value);
if (!gpg->lc_ctype)
return gpg_error_from_syserror ();
}
}
#ifdef LC_MESSAGES
else if (category == LC_MESSAGES)
{
if (gpg->lc_messages)
{
free (gpg->lc_messages);
gpg->lc_messages = NULL;
}
if (value)
{
gpg->lc_messages = strdup (value);
if (!gpg->lc_messages)
return gpg_error_from_syserror ();
}
}
#endif /* LC_MESSAGES */
else
return gpg_error (GPG_ERR_INV_VALUE);
return 0;
}
/* Note, that the status_handler is allowed to modifiy the args
value. */
static void
gpg_set_status_handler (void *engine, engine_status_handler_t fnc,
void *fnc_value)
{
engine_gpg_t gpg = engine;
gpg->status.fnc = fnc;
gpg->status.fnc_value = fnc_value;
}
/* Kludge to process --with-colon output. */
static gpgme_error_t
gpg_set_colon_line_handler (void *engine, engine_colon_line_handler_t fnc,
void *fnc_value)
{
engine_gpg_t gpg = engine;
gpg->colon.bufsize = 1024;
gpg->colon.readpos = 0;
gpg->colon.buffer = malloc (gpg->colon.bufsize);
if (!gpg->colon.buffer)
return gpg_error_from_errno (errno);
if (_gpgme_io_pipe (gpg->colon.fd, 1) == -1)
{
int saved_errno = errno;
free (gpg->colon.buffer);
gpg->colon.buffer = NULL;
return gpg_error_from_errno (saved_errno);
}
if (_gpgme_io_set_close_notify (gpg->colon.fd[0], close_notify_handler, gpg)
|| _gpgme_io_set_close_notify (gpg->colon.fd[1],
close_notify_handler, gpg))
return gpg_error (GPG_ERR_GENERAL);
gpg->colon.eof = 0;
gpg->colon.fnc = fnc;
gpg->colon.fnc_value = fnc_value;
return 0;
}
static gpgme_error_t
command_handler (void *opaque, int fd)
{
gpgme_error_t err;
engine_gpg_t gpg = (engine_gpg_t) opaque;
int processed = 0;
assert (gpg->cmd.used);
assert (gpg->cmd.code);
assert (gpg->cmd.fnc);
err = gpg->cmd.fnc (gpg->cmd.fnc_value, gpg->cmd.code, gpg->cmd.keyword, fd,
&processed);
if (err)
return err;
/* We always need to send at least a newline character. */
if (!processed)
_gpgme_io_write (fd, "\n", 1);
gpg->cmd.code = 0;
/* And sleep again until read_status will wake us up again. */
/* XXX We must check if there are any more fds active after removing
this one. */
(*gpg->io_cbs.remove) (gpg->fd_data_map[gpg->cmd.idx].tag);
gpg->cmd.fd = gpg->fd_data_map[gpg->cmd.idx].fd;
gpg->fd_data_map[gpg->cmd.idx].fd = -1;
return 0;
}
/* The Fnc will be called to get a value for one of the commands with
a key KEY. If the Code pssed to FNC is 0, the function may release
resources associated with the returned value from another call. To
match such a second call to a first call, the returned value from
the first call is passed as keyword. */
static gpgme_error_t
gpg_set_command_handler (void *engine, engine_command_handler_t fnc,
void *fnc_value, gpgme_data_t linked_data)
{
engine_gpg_t gpg = engine;
gpgme_error_t rc;
rc = add_arg (gpg, "--command-fd");
if (rc)
return rc;
/* This is a hack. We don't have a real data object. The only
thing that matters is that we use something unique, so we use the
address of the cmd structure in the gpg object. */
rc = add_data (gpg, (void *) &gpg->cmd, -2, 0);
if (rc)
return rc;
gpg->cmd.fnc = fnc;
gpg->cmd.cb_data = (void *) &gpg->cmd;
gpg->cmd.fnc_value = fnc_value;
gpg->cmd.linked_data = linked_data;
gpg->cmd.used = 1;
return 0;
}
static gpgme_error_t
build_argv (engine_gpg_t gpg)
{
gpgme_error_t err;
struct arg_and_data_s *a;
struct fd_data_map_s *fd_data_map;
size_t datac=0, argc=0;
char **argv;
int need_special = 0;
int use_agent = 0;
char *p;
/* We don't want to use the agent with a malformed environment
variable. This is only a very basic test but sufficient to make
our life in the regression tests easier. */
err = _gpgme_getenv ("GPG_AGENT_INFO", &p);
if (err)
return err;
use_agent = (p && strchr (p, ':'));
if (p)
free (p);
if (gpg->argv)
{
free_argv (gpg->argv);
gpg->argv = NULL;
}
if (gpg->fd_data_map)
{
free_fd_data_map (gpg->fd_data_map);
gpg->fd_data_map = NULL;
}
argc++; /* For argv[0]. */
for (a = gpg->arglist; a; a = a->next)
{
argc++;
if (a->data)
{
/*fprintf (stderr, "build_argv: data\n" );*/
datac++;
if (a->dup_to == -1 && !a->print_fd)
need_special = 1;
}
else
{
/* fprintf (stderr, "build_argv: arg=`%s'\n", a->arg );*/
}
}
if (need_special)
argc++;
if (use_agent)
argc++;
if (!gpg->cmd.used)
argc++; /* --batch */
argc += 1; /* --no-sk-comment */
argv = calloc (argc + 1, sizeof *argv);
if (!argv)
return gpg_error_from_errno (errno);
fd_data_map = calloc (datac + 1, sizeof *fd_data_map);
if (!fd_data_map)
{
int saved_errno = errno;
free_argv (argv);
return gpg_error_from_errno (saved_errno);
}
argc = datac = 0;
argv[argc] = strdup ("gpg"); /* argv[0] */
if (!argv[argc])
{
int saved_errno = errno;
free (fd_data_map);
free_argv (argv);
return gpg_error_from_errno (saved_errno);
}
argc++;
if (need_special)
{
argv[argc] = strdup ("--enable-special-filenames");
if (!argv[argc])
{
int saved_errno = errno;
free (fd_data_map);
free_argv (argv);
return gpg_error_from_errno (saved_errno);
}
argc++;
}
if (use_agent)
{
argv[argc] = strdup ("--use-agent");
if (!argv[argc])
{
int saved_errno = errno;
free (fd_data_map);
free_argv (argv);
return gpg_error_from_errno (saved_errno);
}
argc++;
}
if (!gpg->cmd.used)
{
argv[argc] = strdup ("--batch");
if (!argv[argc])
{
int saved_errno = errno;
free (fd_data_map);
free_argv (argv);
return gpg_error_from_errno (saved_errno);
}
argc++;
}
argv[argc] = strdup ("--no-sk-comment");
if (!argv[argc])
{
int saved_errno = errno;
free (fd_data_map);
free_argv (argv);
return gpg_error_from_errno (saved_errno);
}
argc++;
for (a = gpg->arglist; a; a = a->next)
{
if (a->data)
{
/* Create a pipe to pass it down to gpg. */
fd_data_map[datac].inbound = a->inbound;
/* Create a pipe. */
{
int fds[2];
if (_gpgme_io_pipe (fds, fd_data_map[datac].inbound ? 1 : 0)
== -1)
{
int saved_errno = errno;
free (fd_data_map);
free_argv (argv);
return gpg_error (saved_errno);
}
if (_gpgme_io_set_close_notify (fds[0],
close_notify_handler, gpg)
|| _gpgme_io_set_close_notify (fds[1],
close_notify_handler,
gpg))
{
return gpg_error (GPG_ERR_GENERAL);
}
/* If the data_type is FD, we have to do a dup2 here. */
if (fd_data_map[datac].inbound)
{
fd_data_map[datac].fd = fds[0];
fd_data_map[datac].peer_fd = fds[1];
}
else
{
fd_data_map[datac].fd = fds[1];
fd_data_map[datac].peer_fd = fds[0];
}
}
/* Hack to get hands on the fd later. */
if (gpg->cmd.used)
{
if (gpg->cmd.cb_data == a->data)
{
assert (gpg->cmd.idx == -1);
gpg->cmd.idx = datac;
}
else if (gpg->cmd.linked_data == a->data)
{
assert (gpg->cmd.linked_idx == -1);
gpg->cmd.linked_idx = datac;
}
}
fd_data_map[datac].data = a->data;
fd_data_map[datac].dup_to = a->dup_to;
if (a->dup_to == -1)
{
char *ptr;
int buflen = 25;
argv[argc] = malloc (buflen);
if (!argv[argc])
{
int saved_errno = errno;
free (fd_data_map);
free_argv (argv);
return gpg_error_from_errno (saved_errno);
}
ptr = argv[argc];
if (!a->print_fd)
{
*(ptr++) = '-';
*(ptr++) = '&';
buflen -= 2;
}
_gpgme_io_fd2str (ptr, buflen, fd_data_map[datac].peer_fd);
argc++;
}
datac++;
}
else
{
argv[argc] = strdup (a->arg);
if (!argv[argc])
{
int saved_errno = errno;
free (fd_data_map);
free_argv (argv);
return gpg_error_from_errno (saved_errno);
}
argc++;
}
}
gpg->argv = argv;
gpg->fd_data_map = fd_data_map;
return 0;
}
static gpgme_error_t
add_io_cb (engine_gpg_t gpg, int fd, int dir, gpgme_io_cb_t handler, void *data,
void **tag)
{
gpgme_error_t err;
err = (*gpg->io_cbs.add) (gpg->io_cbs.add_priv, fd, dir, handler, data, tag);
if (err)
return err;
if (!dir)
/* FIXME Kludge around poll() problem. */
err = _gpgme_io_set_nonblocking (fd);
return err;
}
static int
status_cmp (const void *ap, const void *bp)
{
const struct status_table_s *a = ap;
const struct status_table_s *b = bp;
return strcmp (a->name, b->name);
}
/* Handle the status output of GnuPG. This function does read entire
lines and passes them as C strings to the callback function (we can
use C Strings because the status output is always UTF-8 encoded).
Of course we have to buffer the lines to cope with long lines
e.g. with a large user ID. Note: We can optimize this to only cope
with status line code we know about and skip all other stuff
without buffering (i.e. without extending the buffer). */
static gpgme_error_t
read_status (engine_gpg_t gpg)
{
char *p;
int nread;
size_t bufsize = gpg->status.bufsize;
char *buffer = gpg->status.buffer;
size_t readpos = gpg->status.readpos;
assert (buffer);
if (bufsize - readpos < 256)
{
/* Need more room for the read. */
bufsize += 1024;
buffer = realloc (buffer, bufsize);
if (!buffer)
return gpg_error_from_errno (errno);
}
nread = _gpgme_io_read (gpg->status.fd[0],
buffer + readpos, bufsize-readpos);
if (nread == -1)
return gpg_error_from_errno (errno);
if (!nread)
{
gpg->status.eof = 1;
if (gpg->status.fnc)
{
gpgme_error_t err;
err = gpg->status.fnc (gpg->status.fnc_value, GPGME_STATUS_EOF, "");
if (err)
return err;
}
return 0;
}
while (nread > 0)
{
for (p = buffer + readpos; nread; nread--, p++)
{
if (*p == '\n')
{
/* (we require that the last line is terminated by a LF) */
if (p > buffer && p[-1] == '\r')
p[-1] = 0;
*p = 0;
if (!strncmp (buffer, "[GNUPG:] ", 9)
&& buffer[9] >= 'A' && buffer[9] <= 'Z')
{
struct status_table_s t, *r;
char *rest;
rest = strchr (buffer + 9, ' ');
if (!rest)
rest = p; /* Set to an empty string. */
else
*rest++ = 0;
t.name = buffer+9;
/* (the status table has one extra element) */
r = bsearch (&t, status_table, DIM(status_table) - 1,
sizeof t, status_cmp);
if (r)
{
if (gpg->cmd.used
&& (r->code == GPGME_STATUS_GET_BOOL
|| r->code == GPGME_STATUS_GET_LINE
|| r->code == GPGME_STATUS_GET_HIDDEN))
{
gpg->cmd.code = r->code;
if (gpg->cmd.keyword)
free (gpg->cmd.keyword);
gpg->cmd.keyword = strdup (rest);
if (!gpg->cmd.keyword)
return gpg_error_from_errno (errno);
/* This should be the last thing we have
received and the next thing will be that
the command handler does its action. */
if (nread > 1)
DEBUG0 ("ERROR, unexpected data in read_status");
add_io_cb (gpg, gpg->cmd.fd, 0,
command_handler, gpg,
&gpg->fd_data_map[gpg->cmd.idx].tag);
gpg->fd_data_map[gpg->cmd.idx].fd = gpg->cmd.fd;
gpg->cmd.fd = -1;
}
else if (gpg->status.fnc)
{
gpgme_error_t err;
err = gpg->status.fnc (gpg->status.fnc_value,
r->code, rest);
if (err)
return err;
}
if (r->code == GPGME_STATUS_END_STREAM)
{
if (gpg->cmd.used)
{
/* Before we can actually add the
command fd, we might have to flush
the linked output data pipe. */
if (gpg->cmd.linked_idx != -1
&& gpg->fd_data_map[gpg->cmd.linked_idx].fd
!= -1)
{
struct io_select_fd_s fds;
fds.fd =
gpg->fd_data_map[gpg->cmd.linked_idx].fd;
fds.for_read = 1;
fds.for_write = 0;
fds.frozen = 0;
fds.opaque = NULL;
do
{
fds.signaled = 0;
_gpgme_io_select (&fds, 1, 1);
if (fds.signaled)
_gpgme_data_inbound_handler
(gpg->cmd.linked_data, fds.fd);
}
while (fds.signaled);
}
/* XXX We must check if there are any
more fds active after removing this
one. */
(*gpg->io_cbs.remove)
(gpg->fd_data_map[gpg->cmd.idx].tag);
gpg->cmd.fd = gpg->fd_data_map[gpg->cmd.idx].fd;
gpg->fd_data_map[gpg->cmd.idx].fd = -1;
}
}
}
}
/* To reuse the buffer for the next line we have to
shift the remaining data to the buffer start and
restart the loop Hmmm: We can optimize this function
by looking forward in the buffer to see whether a
second complete line is available and in this case
avoid the memmove for this line. */
nread--; p++;
if (nread)
memmove (buffer, p, nread);
readpos = 0;
break; /* the for loop */
}
else
readpos++;
}
}
/* Update the gpg object. */
gpg->status.bufsize = bufsize;
gpg->status.buffer = buffer;
gpg->status.readpos = readpos;
return 0;
}
static gpgme_error_t
status_handler (void *opaque, int fd)
{
engine_gpg_t gpg = opaque;
int err;
assert (fd == gpg->status.fd[0]);
err = read_status (gpg);
if (err)
return err;
if (gpg->status.eof)
_gpgme_io_close (fd);
return 0;
}
static gpgme_error_t
read_colon_line (engine_gpg_t gpg)
{
char *p;
int nread;
size_t bufsize = gpg->colon.bufsize;
char *buffer = gpg->colon.buffer;
size_t readpos = gpg->colon.readpos;
assert (buffer);
if (bufsize - readpos < 256)
{
/* Need more room for the read. */
bufsize += 1024;
buffer = realloc (buffer, bufsize);
if (!buffer)
return gpg_error_from_errno (errno);
}
nread = _gpgme_io_read (gpg->colon.fd[0], buffer+readpos, bufsize-readpos);
if (nread == -1)
return gpg_error_from_errno (errno);
if (!nread)
{
gpg->colon.eof = 1;
assert (gpg->colon.fnc);
gpg->colon.fnc (gpg->colon.fnc_value, NULL);
return 0;
}
while (nread > 0)
{
for (p = buffer + readpos; nread; nread--, p++)
{
if ( *p == '\n' )
{
/* (we require that the last line is terminated by a LF)
and we skip empty lines. Note: we use UTF8 encoding
and escaping of special characters. We require at
least one colon to cope with some other printed
information. */
*p = 0;
if (*buffer && strchr (buffer, ':'))
{
char *line = NULL;
if (gpg->colon.preprocess_fnc)
{
gpgme_error_t err;
err = gpg->colon.preprocess_fnc (buffer, &line);
if (err)
return err;
}
assert (gpg->colon.fnc);
gpg->colon.fnc (gpg->colon.fnc_value, line ? line : buffer);
if (line)
free (line);
}
/* To reuse the buffer for the next line we have to
shift the remaining data to the buffer start and
restart the loop Hmmm: We can optimize this function
by looking forward in the buffer to see whether a
second complete line is available and in this case
avoid the memmove for this line. */
nread--; p++;
if (nread)
memmove (buffer, p, nread);
readpos = 0;
break; /* The for loop. */
}
else
readpos++;
}
}
/* Update the gpg object. */
gpg->colon.bufsize = bufsize;
gpg->colon.buffer = buffer;
gpg->colon.readpos = readpos;
return 0;
}
/* This colonline handler thing is not the clean way to do it. It
might be better to enhance the gpgme_data_t object to act as a wrapper
for a callback. Same goes for the status thing. For now we use
this thing here because it is easier to implement. */
static gpgme_error_t
colon_line_handler (void *opaque, int fd)
{
engine_gpg_t gpg = opaque;
gpgme_error_t rc = 0;
assert (fd == gpg->colon.fd[0]);
rc = read_colon_line (gpg);
if (rc)
return rc;
if (gpg->colon.eof)
_gpgme_io_close (fd);
return 0;
}
static gpgme_error_t
start (engine_gpg_t gpg)
{
gpgme_error_t rc;
int saved_errno;
int i, n;
int status;
struct spawn_fd_item_s *fd_child_list, *fd_tqparent_list;
if (!gpg)
return gpg_error (GPG_ERR_INV_VALUE);
if (!gpg->file_name && !_gpgme_get_gpg_path ())
return gpg_error (GPG_ERR_INV_ENGINE);
if (gpg->lc_ctype)
{
rc = add_arg_ext (gpg, gpg->lc_ctype, 1);
if (!rc)
rc = add_arg_ext (gpg, "--lc-ctype", 1);
if (rc)
return rc;
}
if (gpg->lc_messages)
{
rc = add_arg_ext (gpg, gpg->lc_messages, 1);
if (!rc)
rc = add_arg_ext (gpg, "--lc-messages", 1);
if (rc)
return rc;
}
rc = build_argv (gpg);
if (rc)
return rc;
n = 3; /* status_fd, colon_fd and end of list */
for (i = 0; gpg->fd_data_map[i].data; i++)
n++;
fd_child_list = calloc (n + n, sizeof *fd_child_list);
if (!fd_child_list)
return gpg_error_from_errno (errno);
fd_tqparent_list = fd_child_list + n;
/* build the fd list for the child */
n = 0;
if (gpg->colon.fnc)
{
fd_child_list[n].fd = gpg->colon.fd[1];
fd_child_list[n].dup_to = 1; /* dup to stdout */
n++;
}
for (i = 0; gpg->fd_data_map[i].data; i++)
{
if (gpg->fd_data_map[i].dup_to != -1)
{
fd_child_list[n].fd = gpg->fd_data_map[i].peer_fd;
fd_child_list[n].dup_to = gpg->fd_data_map[i].dup_to;
n++;
}
}
fd_child_list[n].fd = -1;
fd_child_list[n].dup_to = -1;
/* Build the fd list for the tqparent. */
n = 0;
if (gpg->status.fd[1] != -1)
{
fd_tqparent_list[n].fd = gpg->status.fd[1];
fd_tqparent_list[n].dup_to = -1;
n++;
}
if (gpg->colon.fd[1] != -1)
{
fd_tqparent_list[n].fd = gpg->colon.fd[1];
fd_tqparent_list[n].dup_to = -1;
n++;
}
for (i = 0; gpg->fd_data_map[i].data; i++)
{
fd_tqparent_list[n].fd = gpg->fd_data_map[i].peer_fd;
fd_tqparent_list[n].dup_to = -1;
n++;
}
fd_tqparent_list[n].fd = -1;
fd_tqparent_list[n].dup_to = -1;
status = _gpgme_io_spawn (gpg->file_name ? gpg->file_name :
_gpgme_get_gpg_path (),
gpg->argv, fd_child_list, fd_tqparent_list);
saved_errno = errno;
free (fd_child_list);
if (status == -1)
return gpg_error_from_errno (saved_errno);
/*_gpgme_register_term_handler ( closure, closure_value, pid );*/
rc = add_io_cb (gpg, gpg->status.fd[0], 1, status_handler, gpg,
&gpg->status.tag);
if (rc)
/* FIXME: kill the child */
return rc;
if (gpg->colon.fnc)
{
assert (gpg->colon.fd[0] != -1);
rc = add_io_cb (gpg, gpg->colon.fd[0], 1, colon_line_handler, gpg,
&gpg->colon.tag);
if (rc)
/* FIXME: kill the child */
return rc;
}
for (i = 0; gpg->fd_data_map[i].data; i++)
{
if (gpg->cmd.used && i == gpg->cmd.idx)
{
/* Park the cmd fd. */
gpg->cmd.fd = gpg->fd_data_map[i].fd;
gpg->fd_data_map[i].fd = -1;
}
else
{
rc = add_io_cb (gpg, gpg->fd_data_map[i].fd,
gpg->fd_data_map[i].inbound,
gpg->fd_data_map[i].inbound
? _gpgme_data_inbound_handler
: _gpgme_data_outbound_handler,
gpg->fd_data_map[i].data, &gpg->fd_data_map[i].tag);
if (rc)
/* FIXME: kill the child */
return rc;
}
}
(*gpg->io_cbs.event) (gpg->io_cbs.event_priv, GPGME_EVENT_START, NULL);
/* fixme: check what data we can release here */
return 0;
}
static gpgme_error_t
gpg_decrypt (void *engine, gpgme_data_t ciph, gpgme_data_t plain)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
err = add_arg (gpg, "--decrypt");
/* Tell the gpg object about the data. */
if (!err)
err = add_arg (gpg, "--output");
if (!err)
err = add_arg (gpg, "-");
if (!err)
err = add_data (gpg, plain, 1, 1);
if (!err)
err = add_data (gpg, ciph, 0, 0);
if (!err)
start (gpg);
return err;
}
static gpgme_error_t
gpg_delete (void *engine, gpgme_key_t key, int allow_secret)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
err = add_arg (gpg, allow_secret ? "--delete-secret-and-public-key"
: "--delete-key");
if (!err)
err = add_arg (gpg, "--");
if (!err)
{
if (!key->subkeys || !key->subkeys->fpr)
return gpg_error (GPG_ERR_INV_VALUE);
else
err = add_arg (gpg, key->subkeys->fpr);
}
if (!err)
start (gpg);
return err;
}
static gpgme_error_t
append_args_from_signers (engine_gpg_t gpg, gpgme_ctx_t ctx /* FIXME */)
{
gpgme_error_t err = 0;
int i;
gpgme_key_t key;
for (i = 0; (key = gpgme_signers_enum (ctx, i)); i++)
{
const char *s = key->subkeys ? key->subkeys->keyid : NULL;
if (s)
{
if (!err)
err = add_arg (gpg, "-u");
if (!err)
err = add_arg (gpg, s);
}
gpgme_key_unref (key);
if (err) break;
}
return err;
}
static gpgme_error_t
append_args_from_sig_notations (engine_gpg_t gpg, gpgme_ctx_t ctx /* FIXME */)
{
gpgme_error_t err = 0;
gpgme_sig_notation_t notation;
notation = gpgme_sig_notation_get (ctx);
while (!err && notation)
{
if (notation->name
&& !(notation->flags & GPGME_SIG_NOTATION_HUMAN_READABLE))
err = gpg_error (GPG_ERR_INV_VALUE);
else if (notation->name)
{
char *arg;
/* Maximum space needed is one byte for the "critical" flag,
the name, one byte for '=', the value, and a terminating
'\0'. */
arg = malloc (1 + notation->name_len + 1 + notation->value_len + 1);
if (!arg)
err = gpg_error_from_errno (errno);
if (!err)
{
char *argp = arg;
if (notation->critical)
*(argp++) = '!';
memcpy (argp, notation->name, notation->name_len);
argp += notation->name_len;
*(argp++) = '=';
/* We know that notation->name is '\0' terminated. */
strcpy (argp, notation->value);
}
if (!err)
err = add_arg (gpg, "--sig-notation");
if (!err)
err = add_arg (gpg, arg);
if (arg)
free (arg);
}
else
{
/* This is a policy URL. */
char *value;
if (notation->critical)
{
value = malloc (1 + notation->value_len + 1);
if (!value)
err = gpg_error_from_errno (errno);
else
{
value[0] = '!';
/* We know that notation->value is '\0' terminated. */
strcpy (&value[1], notation->value);
}
}
else
value = notation->value;
if (!err)
err = add_arg (gpg, "--sig-policy-url");
if (!err)
err = add_arg (gpg, value);
if (value != notation->value)
free (value);
}
notation = notation->next;
}
return err;
}
static gpgme_error_t
gpg_edit (void *engine, int type, gpgme_key_t key, gpgme_data_t out,
gpgme_ctx_t ctx /* FIXME */)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
err = add_arg (gpg, "--with-colons");
if (!err)
err = append_args_from_signers (gpg, ctx);
if (!err)
err = add_arg (gpg, type == 0 ? "--edit-key" : "--card-edit");
if (!err)
err = add_data (gpg, out, 1, 1);
if (!err)
err = add_arg (gpg, "--");
if (!err && type == 0)
{
const char *s = key->subkeys ? key->subkeys->fpr : NULL;
if (!s)
err = gpg_error (GPG_ERR_INV_VALUE);
else
err = add_arg (gpg, s);
}
if (!err)
err = start (gpg);
return err;
}
static gpgme_error_t
append_args_from_recipients (engine_gpg_t gpg, gpgme_key_t recp[])
{
gpgme_error_t err = 0;
int i = 0;
while (recp[i])
{
if (!recp[i]->subkeys || !recp[i]->subkeys->fpr)
err = gpg_error (GPG_ERR_INV_VALUE);
if (!err)
err = add_arg (gpg, "-r");
if (!err)
err = add_arg (gpg, recp[i]->subkeys->fpr);
if (err)
break;
i++;
}
return err;
}
static gpgme_error_t
gpg_encrypt (void *engine, gpgme_key_t recp[], gpgme_encrypt_flags_t flags,
gpgme_data_t plain, gpgme_data_t ciph, int use_armor)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
int symmetric = !recp;
err = add_arg (gpg, symmetric ? "--symmetric" : "--encrypt");
if (!err && use_armor)
err = add_arg (gpg, "--armor");
if (!symmetric)
{
/* If we know that all recipients are valid (full or ultimate trust)
we can suppress further checks. */
if (!err && !symmetric && (flags & GPGME_ENCRYPT_ALWAYS_TRUST))
err = add_arg (gpg, "--always-trust");
if (!err)
err = append_args_from_recipients (gpg, recp);
}
/* Tell the gpg object about the data. */
if (!err)
err = add_arg (gpg, "--output");
if (!err)
err = add_arg (gpg, "-");
if (!err)
err = add_data (gpg, ciph, 1, 1);
if (gpgme_data_get_file_name (plain))
{
if (!err)
err = add_arg (gpg, "--set-filename");
if (!err)
err = add_arg (gpg, gpgme_data_get_file_name (plain));
}
if (!err)
err = add_arg (gpg, "--");
if (!err)
err = add_data (gpg, plain, 0, 0);
if (!err)
err = start (gpg);
return err;
}
static gpgme_error_t
gpg_encrypt_sign (void *engine, gpgme_key_t recp[],
gpgme_encrypt_flags_t flags, gpgme_data_t plain,
gpgme_data_t ciph, int use_armor,
gpgme_ctx_t ctx /* FIXME */)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
err = add_arg (gpg, "--encrypt");
if (!err)
err = add_arg (gpg, "--sign");
if (!err && use_armor)
err = add_arg (gpg, "--armor");
/* If we know that all recipients are valid (full or ultimate trust)
we can suppress further checks. */
if (!err && (flags & GPGME_ENCRYPT_ALWAYS_TRUST))
err = add_arg (gpg, "--always-trust");
if (!err)
err = append_args_from_recipients (gpg, recp);
if (!err)
err = append_args_from_signers (gpg, ctx);
if (!err)
err = append_args_from_sig_notations (gpg, ctx);
/* Tell the gpg object about the data. */
if (!err)
err = add_arg (gpg, "--output");
if (!err)
err = add_arg (gpg, "-");
if (!err)
err = add_data (gpg, ciph, 1, 1);
if (gpgme_data_get_file_name (plain))
{
if (!err)
err = add_arg (gpg, "--set-filename");
if (!err)
err = add_arg (gpg, gpgme_data_get_file_name (plain));
}
if (!err)
err = add_arg (gpg, "--");
if (!err)
err = add_data (gpg, plain, 0, 0);
if (!err)
err = start (gpg);
return err;
}
static gpgme_error_t
gpg_export (void *engine, const char *pattern, unsigned int reserved,
gpgme_data_t keydata, int use_armor)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
if (reserved)
return gpg_error (GPG_ERR_INV_VALUE);
err = add_arg (gpg, "--export");
if (!err && use_armor)
err = add_arg (gpg, "--armor");
if (!err)
err = add_data (gpg, keydata, 1, 1);
if (!err)
err = add_arg (gpg, "--");
if (!err && pattern && *pattern)
err = add_arg (gpg, pattern);
if (!err)
err = start (gpg);
return err;
}
static gpgme_error_t
gpg_export_ext (void *engine, const char *pattern[], unsigned int reserved,
gpgme_data_t keydata, int use_armor)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
if (reserved)
return gpg_error (GPG_ERR_INV_VALUE);
err = add_arg (gpg, "--export");
if (!err && use_armor)
err = add_arg (gpg, "--armor");
if (!err)
err = add_data (gpg, keydata, 1, 1);
if (!err)
err = add_arg (gpg, "--");
if (pattern)
{
while (!err && *pattern && **pattern)
err = add_arg (gpg, *(pattern++));
}
if (!err)
err = start (gpg);
return err;
}
static gpgme_error_t
gpg_genkey (void *engine, gpgme_data_t help_data, int use_armor,
gpgme_data_t pubkey, gpgme_data_t seckey)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
if (!gpg)
return gpg_error (GPG_ERR_INV_VALUE);
/* We need a special mechanism to get the fd of a pipe here, so that
we can use this for the %pubring and %secring parameters. We
don't have this yet, so we implement only the adding to the
standard keyrings. */
if (pubkey || seckey)
return gpg_error (GPG_ERR_NOT_IMPLEMENTED);
err = add_arg (gpg, "--gen-key");
if (!err && use_armor)
err = add_arg (gpg, "--armor");
if (!err)
err = add_data (gpg, help_data, 0, 0);
if (!err)
err = start (gpg);
return err;
}
static gpgme_error_t
gpg_import (void *engine, gpgme_data_t keydata)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
err = add_arg (gpg, "--import");
if (!err)
err = add_data (gpg, keydata, 0, 0);
if (!err)
err = start (gpg);
return err;
}
/* The output for external keylistings in GnuPG is different from all
the other key listings. We catch this here with a special
preprocessor that reformats the colon handler lines. */
static gpgme_error_t
gpg_keylist_preprocess (char *line, char **r_line)
{
enum
{
RT_NONE, RT_INFO, RT_PUB, RT_UID
}
rectype = RT_NONE;
#define NR_FIELDS 16
char *field[NR_FIELDS];
int fields = 0;
*r_line = NULL;
while (line && fields < NR_FIELDS)
{
field[fields++] = line;
line = strchr (line, ':');
if (line)
*(line++) = '\0';
}
if (!strcmp (field[0], "info"))
rectype = RT_INFO;
else if (!strcmp (field[0], "pub"))
rectype = RT_PUB;
else if (!strcmp (field[0], "uid"))
rectype = RT_UID;
else
rectype = RT_NONE;
switch (rectype)
{
case RT_INFO:
/* FIXME: Eventually, check the version number at least. */
return 0;
case RT_PUB:
if (fields < 7)
return 0;
/* The format is:
pub:<keyid>:<algo>:<keylen>:<creationdate>:<expirationdate>:<flags>
as defined in 5.2. Machine Readable Indexes of the OpenPGP
HTTP Keyserver Protocol (draft).
We want:
pub:o<flags>:<keylen>:<algo>:<keyid>:<creatdate>:<expdate>::::::::
*/
if (asprintf (r_line, "pub:o%s:%s:%s:%s:%s:%s::::::::",
field[6], field[3], field[2], field[1],
field[4], field[5]) < 0)
return gpg_error_from_errno (errno);
return 0;
case RT_UID:
/* The format is:
uid:<escaped uid string>:<creationdate>:<expirationdate>:<flags>
as defined in 5.2. Machine Readable Indexes of the OpenPGP
HTTP Keyserver Protocol (draft).
We want:
uid:o<flags>::::<creatdate>:<expdate>:::<uid>:
*/
if (asprintf (r_line, "uid:o%s::::%s:%s:::%s:",
field[4], field[2], field[3], field[1]) < 0)
return gpg_error_from_errno (errno);
return 0;
case RT_NONE:
/* Unknown record. */
break;
}
return 0;
}
static gpgme_error_t
gpg_keylist (void *engine, const char *pattern, int secret_only,
gpgme_keylist_mode_t mode)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
if (mode & GPGME_KEYLIST_MODE_EXTERN)
{
if ((mode & GPGME_KEYLIST_MODE_LOCAL)
|| secret_only)
return gpg_error (GPG_ERR_NOT_SUPPORTED);
}
err = add_arg (gpg, "--with-colons");
if (!err)
err = add_arg (gpg, "--fixed-list-mode");
if (!err)
err = add_arg (gpg, "--with-fingerprint");
if (!err)
err = add_arg (gpg, "--with-fingerprint");
if (!err && (mode & GPGME_KEYLIST_MODE_SIGS)
&& (mode & GPGME_KEYLIST_MODE_SIG_NOTATIONS))
{
err = add_arg (gpg, "--list-options");
if (!err)
err = add_arg (gpg, "show-sig-subpackets=\"20,26\"");
}
if (!err)
{
if (mode & GPGME_KEYLIST_MODE_EXTERN)
{
err = add_arg (gpg, "--search-keys");
gpg->colon.preprocess_fnc = gpg_keylist_preprocess;
}
else
{
err = add_arg (gpg, secret_only ? "--list-secret-keys"
: ((mode & GPGME_KEYLIST_MODE_SIGS)
? "--check-sigs" : "--list-keys"));
}
}
/* Tell the gpg object about the data. */
if (!err)
err = add_arg (gpg, "--");
if (!err && pattern && *pattern)
err = add_arg (gpg, pattern);
if (!err)
err = start (gpg);
return err;
}
static gpgme_error_t
gpg_keylist_ext (void *engine, const char *pattern[], int secret_only,
int reserved, gpgme_keylist_mode_t mode)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
if (reserved)
return gpg_error (GPG_ERR_INV_VALUE);
err = add_arg (gpg, "--with-colons");
if (!err)
err = add_arg (gpg, "--fixed-list-mode");
if (!err)
err = add_arg (gpg, "--with-fingerprint");
if (!err)
err = add_arg (gpg, "--with-fingerprint");
if (!err && (mode & GPGME_KEYLIST_MODE_SIGS)
&& (mode & GPGME_KEYLIST_MODE_SIG_NOTATIONS))
{
err = add_arg (gpg, "--list-options");
if (!err)
err = add_arg (gpg, "show-sig-subpackets=\"20,26\"");
}
if (!err)
err = add_arg (gpg, secret_only ? "--list-secret-keys"
: ((mode & GPGME_KEYLIST_MODE_SIGS)
? "--check-sigs" : "--list-keys"));
if (!err)
err = add_arg (gpg, "--");
if (pattern)
{
while (!err && *pattern && **pattern)
err = add_arg (gpg, *(pattern++));
}
if (!err)
err = start (gpg);
return err;
}
static gpgme_error_t
gpg_sign (void *engine, gpgme_data_t in, gpgme_data_t out,
gpgme_sig_mode_t mode, int use_armor, int use_textmode,
int include_certs, gpgme_ctx_t ctx /* FIXME */)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
if (mode == GPGME_SIG_MODE_CLEAR)
err = add_arg (gpg, "--clearsign");
else
{
err = add_arg (gpg, "--sign");
if (!err && mode == GPGME_SIG_MODE_DETACH)
err = add_arg (gpg, "--detach");
if (!err && use_armor)
err = add_arg (gpg, "--armor");
if (!err && use_textmode)
err = add_arg (gpg, "--textmode");
}
if (!err)
err = append_args_from_signers (gpg, ctx);
if (!err)
err = append_args_from_sig_notations (gpg, ctx);
if (gpgme_data_get_file_name (in))
{
if (!err)
err = add_arg (gpg, "--set-filename");
if (!err)
err = add_arg (gpg, gpgme_data_get_file_name (in));
}
/* Tell the gpg object about the data. */
if (!err)
err = add_data (gpg, in, 0, 0);
if (!err)
err = add_data (gpg, out, 1, 1);
if (!err)
start (gpg);
return err;
}
static gpgme_error_t
gpg_trustlist (void *engine, const char *pattern)
{
engine_gpg_t gpg = engine;
gpgme_error_t err;
err = add_arg (gpg, "--with-colons");
if (!err)
err = add_arg (gpg, "--list-trust-path");
/* Tell the gpg object about the data. */
if (!err)
err = add_arg (gpg, "--");
if (!err)
err = add_arg (gpg, pattern);
if (!err)
err = start (gpg);
return err;
}
static gpgme_error_t
gpg_verify (void *engine, gpgme_data_t sig, gpgme_data_t signed_text,
gpgme_data_t plaintext)
{
engine_gpg_t gpg = engine;
gpgme_error_t err = 0;
if (plaintext)
{
/* Normal or cleartext signature. */
err = add_arg (gpg, "--output");
if (!err)
err = add_arg (gpg, "-");
if (!err)
err = add_arg (gpg, "--");
if (!err)
err = add_data (gpg, sig, 0, 0);
if (!err)
err = add_data (gpg, plaintext, 1, 1);
}
else
{
err = add_arg (gpg, "--verify");
if (!err)
err = add_arg (gpg, "--");
if (!err)
err = add_data (gpg, sig, -1, 0);
if (signed_text)
{
if (!err)
err = add_arg (gpg, "-");
if (!err)
err = add_data (gpg, signed_text, 0, 0);
}
}
if (!err)
err = start (gpg);
return err;
}
static void
gpg_set_io_cbs (void *engine, gpgme_io_cbs_t io_cbs)
{
engine_gpg_t gpg = engine;
gpg->io_cbs = *io_cbs;
}
struct engine_ops _gpgme_engine_ops_gpg =
{
/* Static functions. */
_gpgme_get_gpg_path,
gpg_get_version,
gpg_get_req_version,
gpg_new,
/* Member functions. */
gpg_release,
NULL, /* reset */
gpg_set_status_handler,
gpg_set_command_handler,
gpg_set_colon_line_handler,
gpg_set_locale,
gpg_decrypt,
gpg_delete,
gpg_edit,
gpg_encrypt,
gpg_encrypt_sign,
gpg_export,
gpg_export_ext,
gpg_genkey,
gpg_import,
gpg_keylist,
gpg_keylist_ext,
gpg_sign,
gpg_trustlist,
gpg_verify,
gpg_set_io_cbs,
gpg_io_event,
gpg_cancel
};