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Add code for a threaded LDAP access to replace the wrapper process.

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Currently used for W32 and W32CE.
This commit is contained in:
Werner Koch 2010-08-02 18:54:53 +00:00
parent 5b664bed4f
commit 819f3be358
8 changed files with 436 additions and 252 deletions
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9
ChangeLog
View File

@ -1,3 +1,12 @@
2010-08-02 Werner Koch <wk@g10code.com>
* configure.ac: Require libksba 1.1.0 due to the use of
ksba_reader_set_release_notify.
2010-07-30 Werner Koch <wk@g10code.com>
* configure.ac (GNUPG_PTH_PATH) [W32]: Require version 2.0.3.
2010-07-25 Werner Koch <wk@g10code.com>
* configure.ac (USE_LDAPWRAPPER): AC_DEFINE and AM_CONDITIONAL it.

4
common/ChangeLog
View File

@ -1,3 +1,7 @@
2010-07-26 Werner Koch <wk@g10code.com>
* estream.c (es_func_fp_write) [W32]: Write smaller chunks.
2010-07-25 Werner Koch <wk@g10code.com>
* argparse.c (initialize): Use ARGPARSE_PRINT_WARNING constant.

23
common/estream.c
View File

@ -955,7 +955,28 @@ es_func_fp_write (void *cookie, const void *buffer, size_t size)
if (file_cookie->fp)
bytes_written = fwrite (buffer, 1, size, file_cookie->fp);
{
#ifdef HAVE_W32_SYSTEM
/* Using an fwrite to stdout connected to the console fails with
the error "Not enough space" for an fwrite size of >= 52KB
(tested on Windows XP SP2). To solve this we always chunk
the writes up into smaller blocks. */
bytes_written = 0;
while (bytes_written < size)
{
size_t cnt = size - bytes_written;
if (cnt > 32*1024)
cnt = 32*1024;
if (fwrite ((const char*)buffer + bytes_written,
cnt, 1, file_cookie->fp) != 1)
break; /* Write error. */
bytes_written += cnt;
}
#else
bytes_written = fwrite (buffer, 1, size, file_cookie->fp);
#endif
}
else
bytes_written = size; /* Successfully written to the bit bucket. */
if (bytes_written != size)

8
configure.ac
View File

@ -49,7 +49,7 @@ NEED_LIBASSUAN_API=2
NEED_LIBASSUAN_VERSION=2.0.0
NEED_KSBA_API=1
NEED_KSBA_VERSION=1.0.2
NEED_KSBA_VERSION=1.1.0
PACKAGE=$PACKAGE_NAME
@ -785,7 +785,11 @@ AC_DEFINE_UNQUOTED(SHRED,
# Check whether the GNU Pth library is available
# Note, that we include a Pth emulation for W32.
#
GNUPG_PATH_PTH
if test "$have_w32_system" = yes; then
GNUPG_PATH_PTH([2.0.4])
else
GNUPG_PATH_PTH
fi
if test "$have_pth" = "yes"; then
AC_DEFINE(USE_GNU_PTH, 1,
[Defined if the GNU Portable Thread Library should be used])

5
dirmngr/ChangeLog
View File

@ -1,3 +1,8 @@
2010-07-26 Werner Koch <wk@g10code.com>
* dirmngr_ldap.c (print_ldap_entries): Remove special fwrite case
for W32 because that is now handles by estream.
2010-07-25 Werner Koch <wk@g10code.com>
* Makefile.am (dirmngr_SOURCES) [!USE_LDAPWRAPPER]: Build

16
dirmngr/Makefile.am
View File

@ -36,12 +36,18 @@ AM_CFLAGS = $(LIBGCRYPT_CFLAGS) $(KSBA_CFLAGS) \
BUILT_SOURCES = no-libgcrypt.c
if HAVE_W32_SYSTEM
ldap_url = ldap-url.h ldap-url.c
else
ldap_url =
endif
noinst_HEADERS = dirmngr.h crlcache.h crlfetch.h misc.h
dirmngr_SOURCES = dirmngr.c dirmngr.h server.c crlcache.c crlfetch.c \
ldapserver.h ldapserver.c certcache.c certcache.h \
cdb.h cdblib.c ldap.c misc.c dirmngr-err.h \
ocsp.c ocsp.h validate.c validate.h ldap-wrapper.h
ocsp.c ocsp.h validate.c validate.h ldap-wrapper.h $(ldap_url)
if USE_LDAPWRAPPER
dirmngr_SOURCES += ldap-wrapper.c
@ -52,13 +58,11 @@ endif
dirmngr_LDADD = $(libcommonpth) ../gl/libgnu.a $(DNSLIBS) $(LIBASSUAN_LIBS) \
$(LIBGCRYPT_LIBS) $(KSBA_LIBS) $(PTH_LIBS) $(LIBINTL) $(LIBICONV)
if HAVE_W32_SYSTEM
ldap_url = ldap-url.h ldap-url.c
else
ldap_url =
if !USE_LDAPWRAPPER
dirmngr_LDADD += $(LDAPLIBS)
endif
if USE_LDAPWRAPPER
dirmngr_ldap_SOURCES = dirmngr_ldap.c $(ldap_url) no-libgcrypt.c
dirmngr_ldap_CFLAGS = $(GPG_ERROR_CFLAGS)

78
dirmngr/dirmngr_ldap.c
View File

@ -32,6 +32,9 @@
#include <assert.h>
#include <sys/time.h>
#include <unistd.h>
#ifndef USE_LDAPWRAPPER
# include <pth.h>
#endif
#ifdef HAVE_W32_SYSTEM
#include <winsock2.h>
@ -55,10 +58,15 @@
#include "i18n.h"
#include "util.h"
/* If we are not using the ldap wrapper process we need to include the
prototype for our module's main function. */
#ifndef USE_LDAPWRAPPER
#include "./ldap-wrapper.h"
/* With the ldap wrapper, there is no need for the pth_enter and leave
functions; thus we redefine them to nops. If we are not using the
ldap wrapper process we need to include the prototype for our
module's main function. */
#ifdef USE_LDAPWRAPPER
# define pth_enter() do { } while (0)
# define pth_leave() do { } while (0)
#else
# include "./ldap-wrapper.h"
#endif
#define DEFAULT_LDAP_TIMEOUT 100 /* Arbitrary long timeout. */
@ -145,6 +153,7 @@ static int process_url (my_opt_t myopt, const char *url);
/* Function called by argparse.c to display information. */
#ifndef USE_LDAPWRAPPER
static const char *
my_strusage (int level)
{
@ -172,6 +181,7 @@ my_strusage (int level)
}
return p;
}
#endif /*!USE_LDAPWRAPPER*/
int
@ -330,8 +340,10 @@ catch_alarm (int dummy)
static void
set_timeout (my_opt_t myopt)
{
#ifndef HAVE_W32_SYSTEM
#ifdef HAVE_W32_SYSTEM
/* FIXME for W32. */
(void)myopt;
#else
if (myopt->alarm_timeout)
alarm (myopt->alarm_timeout);
#endif
@ -345,8 +357,9 @@ print_ldap_entries (my_opt_t myopt, LDAP *ld, LDAPMessage *msg, char *want_attr)
LDAPMessage *item;
int any = 0;
for (item = ldap_first_entry (ld, msg); item;
item = ldap_next_entry (ld, item))
for (pth_enter (), item = ldap_first_entry (ld, msg), pth_leave ();
item;
pth_enter (), item = ldap_next_entry (ld, item), pth_leave ())
{
BerElement *berctx;
char *attr;
@ -366,8 +379,11 @@ print_ldap_entries (my_opt_t myopt, LDAP *ld, LDAPMessage *msg, char *want_attr)
}
for (attr = ldap_first_attribute (ld, item, &berctx); attr;
attr = ldap_next_attribute (ld, item, berctx))
for (pth_enter (), attr = ldap_first_attribute (ld, item, &berctx),
pth_leave ();
attr;
pth_enter (), attr = ldap_next_attribute (ld, item, berctx),
pth_leave ())
{
struct berval **values;
int idx;
@ -404,7 +420,9 @@ print_ldap_entries (my_opt_t myopt, LDAP *ld, LDAPMessage *msg, char *want_attr)
}
}
pth_enter ();
values = ldap_get_values_len (ld, item, attr);
pth_leave ();
if (!values)
{
@ -469,11 +487,7 @@ print_ldap_entries (my_opt_t myopt, LDAP *ld, LDAPMessage *msg, char *want_attr)
return -1;
}
}
#if 1
/* Note: this does not work for STDOUT on a Windows
console, where it fails with "Not enough space" for
CRLs which are 52 KB or larger. */
#warning still true - implement in estream
if (es_fwrite (values[0]->bv_val, values[0]->bv_len,
1, myopt->outstream) != 1)
{
@ -484,33 +498,7 @@ print_ldap_entries (my_opt_t myopt, LDAP *ld, LDAPMessage *msg, char *want_attr)
ber_free (berctx, 0);
return -1;
}
#else
/* On Windows console STDOUT, we have to break up the
writes into small parts. */
{
int n = 0;
while (n < values[0]->bv_len)
{
int cnt = values[0]->bv_len - n;
/* The actual limit is (52 * 1024 - 1) on Windows XP SP2. */
#define MAX_CNT (32*1024)
if (cnt > MAX_CNT)
cnt = MAX_CNT;
if (es_fwrite (((char *) values[0]->bv_val) + n, cnt, 1,
myopt->outstream) != 1)
{
log_error (_("error writing to stdout: %s\n"),
strerror (errno));
ldap_value_free_len (values);
ldap_memfree (attr);
ber_free (berctx, 0);
return -1;
}
n += cnt;
}
}
#endif
any = 1;
if (!myopt->multi)
break; /* Print only the first value. */
@ -540,6 +528,7 @@ fetch_ldap (my_opt_t myopt, const char *url, const LDAPURLDesc *ludp)
int rc = 0;
char *host, *dn, *filter, *attrs[2], *attr;
int port;
int ret;
host = myopt->host? myopt->host : ludp->lud_host;
port = myopt->port? myopt->port : ludp->lud_port;
@ -594,14 +583,19 @@ fetch_ldap (my_opt_t myopt, const char *url, const LDAPURLDesc *ludp)
set_timeout (myopt);
pth_enter ();
ld = ldap_init (host, port);
pth_leave ();
if (!ld)
{
log_error (_("LDAP init to `%s:%d' failed: %s\n"),
host, port, strerror (errno));
return -1;
}
if (ldap_simple_bind_s (ld, myopt->user, myopt->pass))
pth_enter ();
ret = ldap_simple_bind_s (ld, myopt->user, myopt->pass);
pth_leave ();
if (ret)
{
log_error (_("binding to `%s:%d' failed: %s\n"),
host, port, strerror (errno));
@ -610,11 +604,13 @@ fetch_ldap (my_opt_t myopt, const char *url, const LDAPURLDesc *ludp)
}
set_timeout (myopt);
pth_enter ();
rc = ldap_search_st (ld, dn, ludp->lud_scope, filter,
myopt->multi && !myopt->attr && ludp->lud_attrs?
ludp->lud_attrs:attrs,
0,
&myopt->timeout, &msg);
pth_leave ();
if (rc == LDAP_SIZELIMIT_EXCEEDED && myopt->multi)
{
if (es_fwrite ("E\0\0\0\x09truncated", 14, 1, myopt->outstream) != 1)

539
dirmngr/ldap-wrapper-ce.c
View File

@ -36,6 +36,7 @@
#include <fcntl.h>
#include <time.h>
#include <pth.h>
#include <assert.h>
#include "dirmngr.h"
#include "misc.h"
@ -46,63 +47,33 @@
#endif
/* To keep track of the LDAP wrapper state we use this structure. */
struct wrapper_context_s
/* Read a fixed amount of data from READER into BUFFER. */
static gpg_error_t
read_buffer (ksba_reader_t reader, unsigned char *buffer, size_t count)
{
struct wrapper_context_s *next;
gpg_error_t err;
size_t nread;
pid_t pid; /* The pid of the wrapper process. */
int printable_pid; /* Helper to print diagnostics after the process has
been cleaned up. */
int fd; /* Connected with stdout of the ldap wrapper. */
gpg_error_t fd_error; /* Set to the gpg_error of the last read error
if any. */
int log_fd; /* Connected with stderr of the ldap wrapper. */
pth_event_t log_ev;
ctrl_t ctrl; /* Connection data. */
int ready; /* Internally used to mark to be removed contexts. */
ksba_reader_t reader; /* The ksba reader object or NULL. */
char *line; /* Used to print the log lines (malloced). */
size_t linesize;/* Allocated size of LINE. */
size_t linelen; /* Use size of LINE. */
time_t stamp; /* The last time we noticed ativity. */
};
while (count)
{
err = ksba_reader_read (reader, buffer, count, &nread);
if (err)
return err;
buffer += nread;
count -= nread;
}
return 0;
}
/* We keep a global list of spawed wrapper process. A separate thread
makes use of this list to log error messages and to watch out for
finished processes. */
static struct wrapper_context_s *wrapper_list;
/* We need to know whether we are shutting down the process. */
static int shutting_down;
/* Start the reaper thread for this wrapper. */
void
ldap_wrapper_launch_thread (void)
{
static int done;
pth_attr_t tattr;
if (done)
return;
done = 1;
tattr = pth_attr_new();
pth_attr_set (tattr, PTH_ATTR_JOINABLE, 0);
pth_attr_set (tattr, PTH_ATTR_STACK_SIZE, 256*1024);
pth_attr_set (tattr, PTH_ATTR_NAME, "ldap-reaper");
if (!pth_spawn (tattr, ldap_wrapper_thread, NULL))
{
log_error (_("error spawning ldap wrapper reaper thread: %s\n"),
strerror (errno) );
dirmngr_exit (1);
}
pth_attr_destroy (tattr);
/* Not required. */
}
@ -114,191 +85,360 @@ ldap_wrapper_launch_thread (void)
void
ldap_wrapper_wait_connections ()
{
shutting_down = 1;
while (wrapper_list)
pth_yield (NULL);
/* Not required. */
}
/* This function is to be used to release a context associated with the
given reader object. */
void
ldap_wrapper_release_context (ksba_reader_t reader)
{
if (!reader )
return;
for (ctx=wrapper_list; ctx; ctx=ctx->next)
if (ctx->reader == reader)
{
if (DBG_LOOKUP)
log_info ("releasing ldap worker c=%p pid=%d/%d rdr=%p ctrl=%p/%d\n",
ctx,
(int)ctx->pid, (int)ctx->printable_pid,
ctx->reader,
ctx->ctrl, ctx->ctrl? ctx->ctrl->refcount:0);
ctx->reader = NULL;
SAFE_PTH_CLOSE (ctx->fd);
if (ctx->ctrl)
{
ctx->ctrl->refcount--;
ctx->ctrl = NULL;
}
if (ctx->fd_error)
log_info (_("reading from ldap wrapper %d failed: %s\n"),
ctx->printable_pid, gpg_strerror (ctx->fd_error));
break;
}
}
/* Cleanup all resources held by the connection associated with
CTRL. This is used after a cancel to kill running wrappers. */
void
ldap_wrapper_connection_cleanup (ctrl_t ctrl)
{
struct wrapper_context_s *ctx;
(void)ctrl;
for (ctx=wrapper_list; ctx; ctx=ctx->next)
if (ctx->ctrl && ctx->ctrl == ctrl)
{
ctx->ctrl->refcount--;
ctx->ctrl = NULL;
if (ctx->pid != (pid_t)(-1))
gnupg_kill_process (ctx->pid);
if (ctx->fd_error)
log_info (_("reading from ldap wrapper %d failed: %s\n"),
ctx->printable_pid, gpg_strerror (ctx->fd_error));
}
/* Not required. */
}
/* The cookie we use to implement the outstream of the wrapper thread. */
struct outstream_cookie_s
{
int refcount; /* Reference counter - possible values are 1 and 2. */
int eof_seen; /* EOF indicator. */
size_t buffer_len; /* The valid length of the BUFFER. */
size_t buffer_pos; /* The next read position of the BUFFER. */
char buffer[4000]; /* Data buffer. */
};
/* The writer function for the outstream. This is used to transfer
the output of the ldap wrapper thread to the ksba reader object. */
static ssize_t
outstream_cookie_writer (void *cookie_arg, const void *buffer, size_t size)
{
struct outstream_cookie_s *cookie = cookie_arg;
const char *src;
char *dst;
ssize_t nwritten = 0;
src = buffer;
do
{
/* Wait for free space. */
while (cookie->buffer_len == DIM (cookie->buffer))
{
/* Buffer is full: Wait for space. */
pth_yield (NULL);
}
/* Copy data. */
dst = cookie->buffer + cookie->buffer_len;
while (size && cookie->buffer_len < DIM (cookie->buffer))
{
*dst++ = *src++;
size--;
cookie->buffer_len++;
nwritten++;
}
}
while (size); /* Until done. */
if (nwritten)
{
/* Signal data is available - a pth_yield is sufficient because
the test is explicit. To increase performance we could do a
pth_yield to the other thread and only fall back to yielding
to any thread if that returns an error (i.e. the other thread
is not runnable). However our w32pth does not yet support
yielding to a specific thread, thus this won't help. */
pth_yield (NULL);
}
return nwritten;
}
static void
outstream_release_cookie (struct outstream_cookie_s *cookie)
{
cookie->refcount--;
if (!cookie->refcount)
xfree (cookie);
}
/* Closer function for the outstream. This deallocates the cookie if
it won't be used anymore. */
static int
outstream_cookie_closer (void *cookie_arg)
{
struct outstream_cookie_s *cookie = cookie_arg;
if (!cookie)
return 0; /* Nothing to do. */
cookie->eof_seen = 1; /* (only useful if refcount > 1) */
assert (cookie->refcount > 0);
outstream_release_cookie (cookie);
return 0;
}
/* The KSBA reader callback which takes the output of the ldap thread
form the outstream_cookie_writer and make it available to the ksba
reader. */
static int
outstream_reader_cb (void *cb_value, char *buffer, size_t count,
size_t *r_nread)
{
struct outstream_cookie_s *cookie = cb_value;
char *dst;
const char *src;
size_t nread = 0;
if (!buffer && !count && !nread)
return gpg_error (GPG_ERR_NOT_SUPPORTED); /* Rewind is not supported. */
*r_nread = 0;
dst = buffer;
while (cookie->buffer_pos == cookie->buffer_len)
{
if (cookie->eof_seen)
return gpg_error (GPG_ERR_EOF);
/* Wait for data to become available. */
pth_yield (NULL);
}
src = cookie->buffer + cookie->buffer_pos;
while (count && cookie->buffer_pos < cookie->buffer_len)
{
*dst++ = *src++;
count--;
cookie->buffer_pos++;
nread++;
}
if (cookie->buffer_pos == cookie->buffer_len)
cookie->buffer_pos = cookie->buffer_len = 0;
/* Now there should be some space available. We do this even if
COUNT was zero so to give the writer end a chance to continue. */
pth_yield (NULL);
*r_nread = nread;
return 0; /* Success. */
}
/* This function is called by ksba_reader_release. */
static void
outstream_reader_released (void *cb_value, ksba_reader_t r)
{
struct outstream_cookie_s *cookie = cb_value;
(void)r;
assert (cookie->refcount > 0);
outstream_release_cookie (cookie);
}
/* This function is to be used to release a context associated with the
given reader object. This does not release the reader object, though. */
void
ldap_wrapper_release_context (ksba_reader_t reader)
{
(void)reader;
/* Nothing to do. */
}
/* Free a NULL terminated array of malloced strings and the array
itself. */
static void
free_arg_list (char **arg_list)
{
int i;
if (arg_list)
{
for (i=0; arg_list[i]; i++)
xfree (arg_list[i]);
xfree (arg_list);
}
}
/* Copy ARGV into a new array and prepend one element as name of the
program (which is more or less a stub). We need to allocate all
the strings to get ownership of them. */
static gpg_error_t
create_arg_list (const char *argv[], char ***r_arg_list)
{
gpg_error_t err;
char **arg_list;
int i, j;
for (i = 0; argv[i]; i++)
;
arg_list = xtrycalloc (i + 2, sizeof *arg_list);
if (!arg_list)
goto outofcore;
i = 0;
arg_list[i] = xtrystrdup ("<ldap-wrapper-thread>");
if (!arg_list[i])
goto outofcore;
i++;
for (j=0; argv[j]; j++)
{
arg_list[i] = xtrystrdup (argv[j]);
if (!arg_list[i])
goto outofcore;
i++;
}
arg_list[i] = NULL;
*r_arg_list = arg_list;
return 0;
outofcore:
err = gpg_error_from_syserror ();
log_error (_("error allocating memory: %s\n"), strerror (errno));
free_arg_list (arg_list);
*r_arg_list = NULL;
return err;
}
/* Parameters passed to the wrapper thread. */
struct ldap_wrapper_thread_parms
{
char **arg_list;
estream_t outstream;
};
/* The thread which runs the LDAP wrapper. */
static void *
ldap_wrapper_thread (void *opaque)
{
struct ldap_wrapper_thread_parms *parms = opaque;
/*err =*/ ldap_wrapper_main (parms->arg_list, parms->outstream);
/* FIXME: Do we need to return ERR? */
free_arg_list (parms->arg_list);
es_fclose (parms->outstream);
xfree (parms);
return NULL;
}
/* Start a new LDAP thread and returns a new libksba reader
object at READER. ARGV is a NULL terminated list of arguments for
the wrapper. The function returns 0 on success or an error code. */
gpg_error_t
ldap_wrapper (ctrl_t ctrl, ksba_reader_t *reader, const char *argv[])
ldap_wrapper (ctrl_t ctrl, ksba_reader_t *r_reader, const char *argv[])
{
gpg_error_t err;
pid_t pid;
struct wrapper_context_s *ctx;
int i;
int j;
const char **arg_list;
const char *pgmname;
int outpipe[2], errpipe[2];
struct ldap_wrapper_thread_parms *parms;
pth_attr_t tattr;
es_cookie_io_functions_t outstream_func = { NULL };
struct outstream_cookie_s *outstream_cookie;
ksba_reader_t reader;
/* It would be too simple to connect stderr just to our logging
stream. The problem is that if we are running multi-threaded
everything gets intermixed. Clearly we don't want this. So the
only viable solutions are either to have another thread
responsible for logging the messages or to add an option to the
wrapper module to do the logging on its own. Given that we anyway
need a way to rip the child process and this is best done using a
general ripping thread, that thread can do the logging too. */
(void)ctrl;
*reader = NULL;
*r_reader = NULL;
/* Files: We need to prepare stdin and stdout. We get stderr from
the function. */
if (!opt.ldap_wrapper_program || !*opt.ldap_wrapper_program)
pgmname = gnupg_module_name (GNUPG_MODULE_NAME_DIRMNGR_LDAP);
else
pgmname = opt.ldap_wrapper_program;
parms = xtrycalloc (1, sizeof *parms);
if (!parms)
return gpg_error_from_syserror ();
/* Create command line argument array. */
for (i = 0; argv[i]; i++)
;
arg_list = xtrycalloc (i + 2, sizeof *arg_list);
if (!arg_list)
{
err = gpg_error_from_syserror ();
log_error (_("error allocating memory: %s\n"), strerror (errno));
return err;
}
for (i = j = 0; argv[i]; i++, j++)
if (!i && argv[i + 1] && !strcmp (*argv, "--pass"))
{
arg_list[j] = "--env-pass";
setenv ("DIRMNGR_LDAP_PASS", argv[1], 1);
i++;
}
else
arg_list[j] = (char*) argv[i];
ctx = xtrycalloc (1, sizeof *ctx);
if (!ctx)
{
err = gpg_error_from_syserror ();
log_error (_("error allocating memory: %s\n"), strerror (errno));
xfree (arg_list);
return err;
}
err = gnupg_create_inbound_pipe (outpipe);
if (!err)
{
err = gnupg_create_inbound_pipe (errpipe);
if (err)
{
close (outpipe[0]);
close (outpipe[1]);
}
}
err = create_arg_list (argv, &parms->arg_list);
if (err)
{
log_error (_("error creating pipe: %s\n"), gpg_strerror (err));
xfree (arg_list);
xfree (ctx);
xfree (parms);
return err;
}
err = gnupg_spawn_process_fd (pgmname, arg_list,
-1, outpipe[1], errpipe[1], &pid);
xfree (arg_list);
close (outpipe[1]);
close (errpipe[1]);
if (err)
outstream_cookie = xtrycalloc (1, sizeof *outstream_cookie);
if (!outstream_cookie)
{
close (outpipe[0]);
close (errpipe[0]);
xfree (ctx);
err = gpg_error_from_syserror ();
free_arg_list (parms->arg_list);
xfree (parms);
return err;
}
outstream_cookie->refcount++;
ctx->pid = pid;
ctx->printable_pid = (int) pid;
ctx->fd = outpipe[0];
ctx->log_fd = errpipe[0];
ctx->log_ev = pth_event (PTH_EVENT_FD | PTH_UNTIL_FD_READABLE, ctx->log_fd);
if (! ctx->log_ev)
{
xfree (ctx);
return gpg_error_from_syserror ();
}
ctx->ctrl = ctrl;
ctrl->refcount++;
ctx->stamp = time (NULL);
err = ksba_reader_new (reader);
err = ksba_reader_new (&reader);
if (!err)
err = ksba_reader_set_cb (*reader, reader_callback, ctx);
err = ksba_reader_set_release_notify (reader,
outstream_reader_released,
outstream_cookie);
if (!err)
err = ksba_reader_set_cb (reader,
outstream_reader_cb, outstream_cookie);
if (err)
{
log_error (_("error initializing reader object: %s\n"),
gpg_strerror (err));
destroy_wrapper (ctx);
ksba_reader_release (*reader);
*reader = NULL;
ksba_reader_release (reader);
outstream_release_cookie (outstream_cookie);
free_arg_list (parms->arg_list);
xfree (parms);
return err;
}
/* Hook the context into our list of running wrappers. */
ctx->reader = *reader;
ctx->next = wrapper_list;
wrapper_list = ctx;
if (opt.verbose)
log_info ("ldap wrapper %d started (reader %p)\n",
(int)ctx->pid, ctx->reader);
outstream_func.func_write = outstream_cookie_writer;
outstream_func.func_close = outstream_cookie_closer;
parms->outstream = es_fopencookie (outstream_cookie, "wb", outstream_func);
if (!parms->outstream)
{
err = gpg_error_from_syserror ();
free_arg_list (parms->arg_list);
outstream_release_cookie (outstream_cookie);
xfree (parms);
return err;
}
outstream_cookie->refcount++;
tattr = pth_attr_new();
pth_attr_set (tattr, PTH_ATTR_JOINABLE, 0);
pth_attr_set (tattr, PTH_ATTR_STACK_SIZE, 128*1024);
pth_attr_set (tattr, PTH_ATTR_NAME, "ldap-wrapper");
if (pth_spawn (tattr, ldap_wrapper_thread, parms))
parms = NULL; /* Now owned by the thread. */
else
{
err = gpg_error_from_syserror ();
log_error ("error spawning ldap wrapper thread: %s\n",
strerror (errno) );
}
pth_attr_destroy (tattr);
if (parms)
{
free_arg_list (parms->arg_list);
es_fclose (parms->outstream);
xfree (parms);
}
if (err)
{
ksba_reader_release (reader);
return err;
}
/* Need to wait for the first byte so we are able to detect an empty
output and not let the consumer see an EOF without further error
@ -308,19 +448,20 @@ ldap_wrapper (ctrl_t ctrl, ksba_reader_t *reader, const char *argv[])
{
unsigned char c;
err = read_buffer (*reader, &c, 1);
err = read_buffer (reader, &c, 1);
if (err)
{
ldap_wrapper_release_context (*reader);
ksba_reader_release (*reader);
*reader = NULL;
ksba_reader_release (reader);
reader = NULL;
if (gpg_err_code (err) == GPG_ERR_EOF)
return gpg_error (GPG_ERR_NO_DATA);
else
return err;
}
ksba_reader_unread (*reader, &c, 1);
ksba_reader_unread (reader, &c, 1);
}
*r_reader = reader;
return 0;
}