mirror of
https://github.com/moparisthebest/socat
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116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/* source: xioclose.c */
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/* Copyright Gerhard Rieger 2001-2009 */
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/* Published under the GNU General Public License V.2, see file COPYING */
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/* this is the source of the extended close function */
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#include "xiosysincludes.h"
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#include "xioopen.h"
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#include "xiolockfile.h"
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#include "xio-termios.h"
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/* close the xio fd; must be valid and "simple" (not dual) */
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int xioclose1(struct single *pipe) {
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if (pipe->tag == XIO_TAG_INVALID) {
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Notice("xioclose1(): invalid file descriptor");
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errno = EINVAL;
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return -1;
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}
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#if WITH_READLINE
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if ((pipe->dtype & XIODATA_MASK) == XIODATA_READLINE) {
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Write_history(pipe->para.readline.history_file);
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/*xiotermios_setflag(pipe->fd, 3, ECHO|ICANON);*/ /* error when pty closed */
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}
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#endif /* WITH_READLINE */
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#if WITH_OPENSSL
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if ((pipe->dtype & XIODATA_MASK) == XIODATA_OPENSSL) {
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if (pipe->para.openssl.ssl) {
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/* e.g. on TCP connection refused, we do not yet have this set */
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sycSSL_shutdown(pipe->para.openssl.ssl);
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sycSSL_free(pipe->para.openssl.ssl);
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pipe->para.openssl.ssl = NULL;
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}
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Close(pipe->fd); pipe->fd = -1;
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if (pipe->para.openssl.ctx) {
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sycSSL_CTX_free(pipe->para.openssl.ctx);
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pipe->para.openssl.ctx = NULL;
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}
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} else
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#endif /* WITH_OPENSSL */
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#if WITH_TERMIOS
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if (pipe->ttyvalid) {
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if (Tcsetattr(pipe->fd, 0, &pipe->savetty) < 0) {
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Warn2("cannot restore terminal settings on fd %d: %s",
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pipe->fd, strerror(errno));
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}
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}
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#endif /* WITH_TERMIOS */
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if (pipe->fd >= 0) {
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switch (pipe->howtoend) {
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case END_KILL: case END_SHUTDOWN_KILL: case END_CLOSE_KILL:
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if (pipe->para.exec.pid > 0) {
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if (Kill(pipe->para.exec.pid, SIGTERM) < 0) {
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Msg2(errno==ESRCH?E_INFO:E_WARN, "kill(%d, SIGTERM): %s",
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pipe->para.exec.pid, strerror(errno));
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}
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}
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default:
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break;
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}
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switch (pipe->howtoend) {
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case END_CLOSE: case END_CLOSE_KILL:
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if (Close(pipe->fd) < 0) {
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Info2("close(%d): %s", pipe->fd, strerror(errno)); } break;
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#if _WITH_SOCKET
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case END_SHUTDOWN: case END_SHUTDOWN_KILL:
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if (Shutdown(pipe->fd, 2) < 0) {
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Info3("shutdown(%d, %d): %s", pipe->fd, 2, strerror(errno)); }
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break;
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#endif /* _WITH_SOCKET */
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case END_NONE: default: break;
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}
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}
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/* unlock */
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if (pipe->havelock) {
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xiounlock(pipe->lock.lockfile);
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pipe->havelock = false;
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}
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if (pipe->opt_unlink_close && pipe->unlink_close) {
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if (Unlink(pipe->unlink_close) < 0) {
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Info2("unlink(\"%s\"): %s", pipe->unlink_close, strerror(errno));
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}
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free(pipe->unlink_close);
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}
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pipe->tag = XIO_TAG_INVALID;
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return 0; /*! */
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}
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/* close the xio fd */
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int xioclose(xiofile_t *file) {
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int result;
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if (file->tag == XIO_TAG_INVALID) {
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Error("xioclose(): invalid file descriptor");
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errno = EINVAL;
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return -1;
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}
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if (file->tag == XIO_TAG_DUAL) {
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result = xioclose1(file->dual.stream[0]);
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result |= xioclose1(file->dual.stream[1]);
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file->tag = XIO_TAG_INVALID;
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} else {
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result = xioclose1(&file->stream);
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}
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return result;
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}
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