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Fix gnupg_create_{inbound,outbound}_pipe API.

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So that non-useful value for other end of pipe won't
be shown to its users.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2024-07-04 10:55:21 +09:00
parent c845adb5a1
commit e10b22f8e7
No known key found for this signature in database
GPG Key ID: 640114AF89DE6054
5 changed files with 93 additions and 75 deletions
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41
common/exechelp-posix.c
View File

@ -283,24 +283,31 @@ do_create_pipe (int filedes[2])
static gpg_error_t
create_pipe_and_estream (int filedes[2], estream_t *r_fp,
create_pipe_and_estream (int *r_fd, estream_t *r_fp,
int outbound, int nonblock)
{
gpg_error_t err;
int filedes[2];
if (pipe (filedes) == -1)
{
err = my_error_from_syserror ();
log_error (_("error creating a pipe: %s\n"), gpg_strerror (err));
filedes[0] = filedes[1] = -1;
*r_fd = -1;
*r_fp = NULL;
return err;
}
if (!outbound)
{
*r_fd = filedes[1];
*r_fp = es_fdopen (filedes[0], nonblock? "r,nonblock" : "r");
}
else
{
*r_fd = filedes[0];
*r_fp = es_fdopen (filedes[1], nonblock? "w,nonblock" : "w");
}
if (!*r_fp)
{
err = my_error_from_syserror ();
@ -308,7 +315,7 @@ create_pipe_and_estream (int filedes[2], estream_t *r_fp,
gpg_strerror (err));
close (filedes[0]);
close (filedes[1]);
filedes[0] = filedes[1] = -1;
*r_fd = -1;
return err;
}
return 0;
@ -316,28 +323,28 @@ create_pipe_and_estream (int filedes[2], estream_t *r_fp,
/* Portable function to create a pipe. Under Windows the write end is
inheritable. If R_FP is not NULL, an estream is created for the
read end and stored at R_FP. */
inheritable. Pipe is created and the read end is stored at R_FD.
An estream is created for the write end and stored at R_FP. */
gpg_error_t
gnupg_create_inbound_pipe (int filedes[2], estream_t *r_fp, int nonblock)
gnupg_create_inbound_pipe (int *r_fd, estream_t *r_fp, int nonblock)
{
if (r_fp)
return create_pipe_and_estream (filedes, r_fp, 0, nonblock);
else
return do_create_pipe (filedes);
if (!r_fd || !r_fp)
gpg_error (GPG_ERR_INV_ARG);
return create_pipe_and_estream (r_fd, r_fp, 0, nonblock);
}
/* Portable function to create a pipe. Under Windows the read end is
inheritable. If R_FP is not NULL, an estream is created for the
write end and stored at R_FP. */
inheritable. Pipe is created and the write end is stored at R_FD.
An estream is created for the write end and stored at R_FP. */
gpg_error_t
gnupg_create_outbound_pipe (int filedes[2], estream_t *r_fp, int nonblock)
gnupg_create_outbound_pipe (int *r_fd, estream_t *r_fp, int nonblock)
{
if (r_fp)
return create_pipe_and_estream (filedes, r_fp, 1, nonblock);
else
return do_create_pipe (filedes);
if (!r_fd || !r_fp)
gpg_error (GPG_ERR_INV_ARG);
return create_pipe_and_estream (r_fd, r_fp, 1, nonblock);
}

43
common/exechelp-w32.c
View File

@ -223,27 +223,33 @@ create_inheritable_pipe (HANDLE filedes[2], int flags)
static gpg_error_t
create_pipe_and_estream (gnupg_fd_t fds[2], int flags,
create_pipe_and_estream (gnupg_fd_t *r_fd, int flags,
estream_t *r_fp, int outbound, int nonblock)
{
gpg_error_t err = 0;
es_syshd_t syshd;
gnupg_fd_t fds[2];
fds[0] = fds[1] = GNUPG_INVALID_FD;
if (create_inheritable_pipe (fds, flags) < 0)
err = my_error_from_syserror ();
if (! err && r_fp)
{
err = my_error_from_syserror ();
log_error (_("error creating a pipe: %s\n"), gpg_strerror (err));
*r_fd = GNUPG_INVALID_FD;
*r_fp = NULL;
return err;
}
syshd.type = ES_SYSHD_HANDLE;
if (!outbound)
{
syshd.u.handle = fds[0];
*r_fd = fds[1];
*r_fp = es_sysopen (&syshd, nonblock? "r,nonblock" : "r");
}
else
{
syshd.u.handle = fds[1];
*r_fd = fds[0];
*r_fp = es_sysopen (&syshd, nonblock? "w,nonblock" : "w");
}
if (!*r_fp)
@ -253,31 +259,36 @@ create_pipe_and_estream (gnupg_fd_t fds[2], int flags,
gpg_strerror (err));
CloseHandle (fds[0]);
CloseHandle (fds[1]);
fds[0] = fds[1] = GNUPG_INVALID_FD;
*r_fd = GNUPG_INVALID_FD;
return err;
}
}
return err;
return 0;
}
/* Portable function to create a pipe. Under Windows the write end is
inheritable. If R_FP is not NULL, an estream is created for the
read end and stored at R_FP. */
inheritable. Pipe is created and the read end is stored at R_FD.
An estream is created for the write end and stored at R_FP. */
gpg_error_t
gnupg_create_inbound_pipe (gnupg_fd_t fds[2], estream_t *r_fp, int nonblock)
gnupg_create_inbound_pipe (gnupg_fd_t *r_fd, estream_t *r_fp, int nonblock)
{
return create_pipe_and_estream (fds, INHERIT_WRITE, r_fp, 0, nonblock);
if (!r_fd || !r_fp)
gpg_error (GPG_ERR_INV_ARG);
return create_pipe_and_estream (r_fd, INHERIT_WRITE, r_fp, 0, nonblock);
}
/* Portable function to create a pipe. Under Windows the read end is
inheritable. If R_FP is not NULL, an estream is created for the
write end and stored at R_FP. */
inheritable. Pipe is created and the write end is stored at R_FD.
An estream is created for the write end and stored at R_FP. */
gpg_error_t
gnupg_create_outbound_pipe (gnupg_fd_t fds[2], estream_t *r_fp, int nonblock)
gnupg_create_outbound_pipe (gnupg_fd_t *r_fd, estream_t *r_fp, int nonblock)
{
return create_pipe_and_estream (fds, INHERIT_READ, r_fp, 1, nonblock);
if (!r_fd || !r_fp)
gpg_error (GPG_ERR_INV_ARG);
return create_pipe_and_estream (r_fd, INHERIT_READ, r_fp, 1, nonblock);
}

12
common/exechelp.h
View File

@ -54,15 +54,15 @@ int *get_all_open_fds (void);
/* Portable function to create a pipe. Under Windows the write end is
inheritable. If R_FP is not NULL, an estream is created for the
write end and stored at R_FP. */
gpg_error_t gnupg_create_inbound_pipe (gnupg_fd_t filedes[2],
inheritable. Pipe is created and the read end is stored at R_FD.
An estream is created for the write end and stored at R_FP. */
gpg_error_t gnupg_create_inbound_pipe (gnupg_fd_t *r_fd,
estream_t *r_fp, int nonblock);
/* Portable function to create a pipe. Under Windows the read end is
inheritable. If R_FP is not NULL, an estream is created for the
write end and stored at R_FP. */
gpg_error_t gnupg_create_outbound_pipe (gnupg_fd_t filedes[2],
inheritable. Pipe is created and the write end is stored at R_FD.
An estream is created for the write end and stored at R_FP. */
gpg_error_t gnupg_create_outbound_pipe (gnupg_fd_t *r_fd,
estream_t *r_fp, int nonblock);
/* Portable function to create a pipe. Under Windows both ends are

12
common/exectool.c
View File

@ -331,7 +331,7 @@ gnupg_exec_tool_stream (const char *pgmname, const char *argv[],
#else
int exceptclose[2];
#endif
gnupg_fd_t extrapipe[2] = { GNUPG_INVALID_FD, GNUPG_INVALID_FD };
gnupg_fd_t extrapipe;
char extrafdbuf[20];
const char *argsave = NULL;
int argsaveidx;
@ -387,7 +387,7 @@ gnupg_exec_tool_stream (const char *pgmname, const char *argv[],
if (inextra)
{
err = gnupg_create_outbound_pipe (extrapipe, &extrafp, 1);
err = gnupg_create_outbound_pipe (&extrapipe, &extrafp, 1);
if (err)
{
log_error ("error creating outbound pipe for extra fp: %s\n",
@ -395,7 +395,7 @@ gnupg_exec_tool_stream (const char *pgmname, const char *argv[],
goto leave;
}
/* Do not close in child. */
exceptclose[i] = extrapipe[0];
exceptclose[i] = extrapipe;
/* Now find the argument marker and replace by the pipe's fd.
Yeah, that is an ugly non-thread safe hack but it safes us to
create a copy of the array. */
@ -439,11 +439,11 @@ gnupg_exec_tool_stream (const char *pgmname, const char *argv[],
| GPGRT_PROCESS_STDERR_PIPE), act, &proc);
gpgrt_process_get_streams (proc, GPGRT_PROCESS_STREAM_NONBLOCK,
input? &infp : NULL, &outfp, &errfp);
if (extrapipe[0] != GNUPG_INVALID_FD)
if (extrapipe != GNUPG_INVALID_FD)
#ifdef HAVE_W32_SYSTEM
CloseHandle (extrapipe[0]);
CloseHandle (extrapipe);
#else
close (extrapipe[0]);
close (extrapipe);
#endif
if (argsave)
argv[argsaveidx] = argsave;

18
kbx/kbx-client-util.c
View File

@ -103,7 +103,7 @@ prepare_data_pipe (kbx_client_data_t kcd)
{
gpg_error_t err;
int rc;
gnupg_fd_t inpipe[2];
gnupg_fd_t inpipe;
estream_t infp;
npth_attr_t tattr;
@ -112,28 +112,28 @@ prepare_data_pipe (kbx_client_data_t kcd)
kcd->datalen = 0;
kcd->dataerr = 0;
err = gnupg_create_inbound_pipe (inpipe, &infp, 0);
err = gnupg_create_inbound_pipe (&inpipe, &infp, 0);
if (err)
{
log_error ("error creating inbound pipe: %s\n", gpg_strerror (err));
return err; /* That should not happen. */
}
err = assuan_sendfd (kcd->ctx, inpipe[1]);
err = assuan_sendfd (kcd->ctx, inpipe);
if (err)
{
#ifdef HAVE_W32_SYSTEM
log_error ("sending fd %p to keyboxd: %s <%s>\n",
inpipe[1], gpg_strerror (err), gpg_strsource (err));
inpipe, gpg_strerror (err), gpg_strsource (err));
#else
log_error ("sending fd %d to keyboxd: %s <%s>\n",
inpipe[1], gpg_strerror (err), gpg_strsource (err));
inpipe, gpg_strerror (err), gpg_strsource (err));
#endif
es_fclose (infp);
#ifdef HAVE_W32_SYSTEM
CloseHandle (inpipe[1]);
CloseHandle (inpipe);
#else
close (inpipe[1]);
close (inpipe);
#endif
return err;
}
@ -149,9 +149,9 @@ prepare_data_pipe (kbx_client_data_t kcd)
}
#ifdef HAVE_W32_SYSTEM
CloseHandle (inpipe[1]);
CloseHandle (inpipe);
#else
close (inpipe[1]);
close (inpipe);
#endif
kcd->fp = infp;