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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:38:56 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:38:56 +0000 |
commit | 6c20c8ed2cb9ab69a1a57ccb2b9b79969a808321 (patch) | |
tree | f63ce19d57fad3ac4a15bc26dbfbfa2b834111b5 /lib/sh/netconn.c | |
parent | Initial commit. (diff) | |
download | bash-upstream/5.2.15.tar.xz bash-upstream/5.2.15.zip |
Adding upstream version 5.2.15.upstream/5.2.15upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/sh/netconn.c')
-rw-r--r-- | lib/sh/netconn.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/lib/sh/netconn.c b/lib/sh/netconn.c new file mode 100644 index 0000000..e20f104 --- /dev/null +++ b/lib/sh/netconn.c @@ -0,0 +1,82 @@ +/* netconn.c -- is a particular file descriptor a network connection?. */ + +/* Copyright (C) 2002-2005 Free Software Foundation, Inc. + + This file is part of GNU Bash, the Bourne Again SHell. + + Bash 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 3 of the License, or + (at your option) any later version. + + Bash 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 Bash. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <config.h> + +#include <bashtypes.h> +#if ! defined(_MINIX) && defined (HAVE_SYS_FILE_H) +# include <sys/file.h> +#endif +#include <posixstat.h> +#include <filecntl.h> + +#include <errno.h> + +#if defined (HAVE_UNISTD_H) +# include <unistd.h> +#endif + +/* The second and subsequent conditions must match those used to decide + whether or not to call getpeername() in isnetconn(). */ +#if defined (HAVE_SYS_SOCKET_H) && defined (HAVE_GETPEERNAME) && !defined (SVR4_2) +# include <sys/socket.h> +#endif + +/* Is FD a socket or network connection? */ +int +isnetconn (fd) + int fd; +{ +#if defined (HAVE_SYS_SOCKET_H) && defined (HAVE_GETPEERNAME) && !defined (SVR4_2) && !defined (__BEOS__) + int rv; + socklen_t l; + struct sockaddr sa; + + l = sizeof(sa); + rv = getpeername(fd, &sa, &l); + /* Posix.2 says getpeername can return these errors. */ + return ((rv < 0 && (errno == ENOTSOCK || errno == ENOTCONN || errno == EINVAL || errno == EBADF)) ? 0 : 1); +#else /* !HAVE_GETPEERNAME || SVR4_2 || __BEOS__ */ +# if defined (SVR4) || defined (SVR4_2) + /* Sockets on SVR4 and SVR4.2 are character special (streams) devices. */ + struct stat sb; + + if (isatty (fd)) + return (0); + if (fstat (fd, &sb) < 0) + return (0); +# if defined (S_ISFIFO) + if (S_ISFIFO (sb.st_mode)) + return (0); +# endif /* S_ISFIFO */ + return (S_ISCHR (sb.st_mode)); +# else /* !SVR4 && !SVR4_2 */ +# if defined (S_ISSOCK) && !defined (__BEOS__) + struct stat sb; + + if (fstat (fd, &sb) < 0) + return (0); + return (S_ISSOCK (sb.st_mode)); +# else /* !S_ISSOCK || __BEOS__ */ + return (0); +# endif /* !S_ISSOCK || __BEOS__ */ +# endif /* !SVR4 && !SVR4_2 */ +#endif /* !HAVE_GETPEERNAME || SVR4_2 || __BEOS__ */ +} |