diff options
Diffstat (limited to 'assuan/assuan-pipe-connect.c')
| -rw-r--r-- | assuan/assuan-pipe-connect.c | 288 |
1 files changed, 0 insertions, 288 deletions
diff --git a/assuan/assuan-pipe-connect.c b/assuan/assuan-pipe-connect.c deleted file mode 100644 index 0cb48ca1a..000000000 --- a/assuan/assuan-pipe-connect.c +++ /dev/null @@ -1,288 +0,0 @@ -/* assuan-pipe-connect.c - Establish a pipe connection (client) - * Copyright (C) 2001, 2002 Free Software Foundation, Inc. - * - * This file is part of Assuan. - * - * Assuan 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. - * - * Assuan 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <signal.h> -#include <unistd.h> -#include <errno.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/wait.h> - -#include "assuan-defs.h" - -#ifdef _POSIX_OPEN_MAX -#define MAX_OPEN_FDS _POSIX_OPEN_MAX -#else -#define MAX_OPEN_FDS 20 -#endif - -#ifdef HAVE_JNLIB_LOGGING -#include "../jnlib/logging.h" -#define LOGERROR1(a,b) log_error ((a), (b)) -#else -#define LOGERROR1(a,b) fprintf (stderr, (a), (b)) -#endif - - - -static int -writen ( int fd, const char *buffer, size_t length ) -{ - while (length) - { - int nwritten = write (fd, buffer, length); - - if (nwritten < 0) - { - if (errno == EINTR) - continue; - return -1; /* write error */ - } - length -= nwritten; - buffer += nwritten; - } - return 0; /* okay */ -} - - -static int -do_finish (ASSUAN_CONTEXT ctx) -{ - if (ctx->inbound.fd != -1) - { - close (ctx->inbound.fd); - ctx->inbound.fd = -1; - } - if (ctx->outbound.fd != -1) - { - close (ctx->outbound.fd); - ctx->outbound.fd = -1; - } - if (ctx->pid != -1) - { - waitpid (ctx->pid, NULL, 0); /* FIXME Check return value. */ - ctx->pid = -1; - } - return 0; -} - -static void -do_deinit (ASSUAN_CONTEXT ctx) -{ - do_finish (ctx); -} - - - -/* Connect to a server over a pipe, creating the assuan context and - returning it in CTX. The server filename is NAME, the argument - vector in ARGV. FD_CHILD_LIST is a -1 terminated list of file - descriptors not to close in the child. */ -AssuanError -assuan_pipe_connect (ASSUAN_CONTEXT *ctx, const char *name, char *const argv[], - int *fd_child_list) -{ - static int fixed_signals = 0; - AssuanError err; - int rp[2]; - int wp[2]; - - if (!ctx || !name || !argv || !argv[0]) - return ASSUAN_Invalid_Value; - - if (!fixed_signals) - { - struct sigaction act; - - sigaction (SIGPIPE, NULL, &act); - if (act.sa_handler == SIG_DFL) - { - act.sa_handler = SIG_IGN; - sigemptyset (&act.sa_mask); - act.sa_flags = 0; - sigaction (SIGPIPE, &act, NULL); - } - fixed_signals = 1; - /* FIXME: This is not MT safe */ - } - - if (pipe (rp) < 0) - return ASSUAN_General_Error; - - if (pipe (wp) < 0) - { - close (rp[0]); - close (rp[1]); - return ASSUAN_General_Error; - } - - err = _assuan_new_context (ctx); - if (err) - { - close (rp[0]); - close (rp[1]); - close (wp[0]); - close (wp[1]); - return err; - } - (*ctx)->pipe_mode = 1; - (*ctx)->inbound.fd = rp[0]; /* Our inbound is read end of read pipe. */ - (*ctx)->outbound.fd = wp[1]; /* Our outbound is write end of write pipe. */ - (*ctx)->deinit_handler = do_deinit; - (*ctx)->finish_handler = do_finish; - - (*ctx)->pid = fork (); - if ((*ctx)->pid < 0) - { - close (rp[0]); - close (rp[1]); - close (wp[0]); - close (wp[1]); - _assuan_release_context (*ctx); - return ASSUAN_General_Error; - } - - if ((*ctx)->pid == 0) - { - int i, n; - char errbuf[512]; - int *fdp; - - /* Close all files which will not be duped and are not in the - fd_child_list. */ - n = sysconf (_SC_OPEN_MAX); - if (n < 0) - n = MAX_OPEN_FDS; - for (i=0; i < n; i++) - { - fdp = fd_child_list; - if (fdp) - { - while (*fdp != -1 && *fdp != i) - fdp++; - } - - if (!(fdp && *fdp != -1) - && i != rp[1] && i != wp[0]) - close(i); - } - errno = 0; - - /* Dup stderr to /dev/null unless it is in the list of FDs to be - passed to the child. */ - fdp = fd_child_list; - if (fdp) - { - for (; *fdp != -1 && *fdp != STDERR_FILENO; fdp++) - ; - } - if (!fdp || *fdp == -1) - { - int fd = open ("/dev/null", O_WRONLY); - if (fd == -1) - { - LOGERROR1 ("can't open `/dev/null': %s\n", strerror (errno)); - _exit (4); - } - if (dup2 (fd, STDERR_FILENO) == -1) - { - LOGERROR1 ("dup2(dev/null, 2) failed: %s\n", strerror (errno)); - _exit (4); - } - close (fd); - } - - /* Dup handles and to stdin/stdout and exec. */ - if (rp[1] != STDOUT_FILENO) - { - if (dup2 (rp[1], STDOUT_FILENO) == -1) - { - LOGERROR1 ("dup2 failed in child: %s\n", strerror (errno)); - _exit (4); - } - close (rp[1]); - } - if (wp[0] != STDIN_FILENO) - { - if (dup2 (wp[0], STDIN_FILENO) == -1) - { - LOGERROR1 ("dup2 failed in child: %s\n", strerror (errno)); - _exit (4); - } - close (wp[0]); - } - - execv (name, argv); - /* oops - use the pipe to tell the parent about it */ - snprintf (errbuf, sizeof(errbuf)-1, "ERR %d can't exec `%s': %.50s\n", - ASSUAN_Problem_Starting_Server, name, strerror (errno)); - errbuf[sizeof(errbuf)-1] = 0; - writen (1, errbuf, strlen (errbuf)); - _exit (4); - } - - close (rp[1]); - close (wp[0]); - - /* initial handshake */ - { - int okay, off; - - err = _assuan_read_from_server (*ctx, &okay, &off); - if (err) - { - LOGERROR1 ("can't connect server: %s\n", assuan_strerror (err)); - } - else if (okay != 1) - { - LOGERROR1 ("can't connect server: `%s'\n", (*ctx)->inbound.line); - err = ASSUAN_Connect_Failed; - } - } - - if (err) - { - assuan_disconnect (*ctx); - *ctx = NULL; - } - - return err; -} - - - - - - - - - - - - - - |