-/*
- * This code is copyright 2001 by Craig Hughes
- * Portions copyright 2002 by Brad Jorsch
- * It is licensed for use with SpamAssassin according to the terms of the Perl Artistic License
- * The text of this license is included in the SpamAssassin distribution in the file named "License"
+/* <@LICENSE>
+ * Copyright 2004 Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * </@LICENSE>
*/
+#ifndef _WIN32
#include <unistd.h>
-#include <errno.h>
+#include <sys/uio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#else
+
+#ifdef _MSC_VER
+/* ignore MSVC++ warnings that are annoying and hard to remove:
+ 4115 named type definition in parentheses
+ 4127 conditional expression is constant
+ 4514 unreferenced inline function removed
+ */
+#pragma warning( disable : 4115 4127 4514 )
+#endif
+#include <io.h>
+#endif
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
#include "utils.h"
/* Dec 13 2001 jm: added safe full-read and full-write functions. These
*/
/* Aug 14, 2002 bj: EINTR and EAGAIN aren't fatal, are they? */
/* Aug 14, 2002 bj: moved these to utils.c */
-int
-full_read (int fd, unsigned char *buf, int min, int len)
+/* Jan 13, 2003 ym: added timeout functionality */
+/* Apr 24, 2003 sjf: made full_read and full_write void* params */
+
+/* -------------------------------------------------------------------------- */
+#ifndef _WIN32
+typedef void sigfunc(int); /* for signal handlers */
+
+sigfunc *sig_catch(int sig, void (*f) (int))
+{
+ struct sigaction act, oact;
+ act.sa_handler = f;
+ act.sa_flags = 0;
+ sigemptyset(&act.sa_mask);
+ sigaction(sig, &act, &oact);
+ return oact.sa_handler;
+}
+
+static void catch_alrm(int x)
+{
+ UNUSED_VARIABLE(x);
+}
+#endif
+
+int fd_timeout_read(int fd, char fdflag, void *buf, size_t nbytes)
+{
+ int nred;
+ int origerr;
+#ifndef _WIN32
+ sigfunc *sig;
+
+ sig = sig_catch(SIGALRM, catch_alrm);
+ if (libspamc_timeout > 0) {
+ alarm(libspamc_timeout);
+ }
+#endif
+
+ do {
+ if (fdflag) {
+ nred = (int)read(fd, buf, nbytes);
+ origerr = errno;
+ }
+ else {
+ nred = (int)recv(fd, buf, nbytes, 0);
+#ifndef _WIN32
+ origerr = errno;
+#else
+ origerr = WSAGetLastError();
+#endif
+ }
+ } while (nred < 0 && origerr == EWOULDBLOCK);
+
+#ifndef _WIN32
+ if (nred < 0 && origerr == EINTR)
+ errno = ETIMEDOUT;
+
+ if (libspamc_timeout > 0) {
+ alarm(0);
+ }
+
+ /* restore old signal handler */
+ sig_catch(SIGALRM, sig);
+#endif
+
+ return nred;
+}
+
+int ssl_timeout_read(SSL * ssl, void *buf, int nbytes)
{
- int total;
- int thistime;
-
- for (total = 0; total < min; ) {
- thistime = read (fd, buf+total, len-total);
-
- if (thistime < 0) {
- if(EINTR == errno || EAGAIN == errno) continue;
- return -1;
- } else if (thistime == 0) {
- /* EOF, but we didn't read the minimum. return what we've read
- * so far and next read (if there is one) will return 0. */
- return total;
+ int nred;
+
+#ifndef _WIN32
+ sigfunc *sig;
+
+ sig = sig_catch(SIGALRM, catch_alrm);
+ if (libspamc_timeout > 0) {
+ alarm(libspamc_timeout);
+ }
+#endif
+
+ do {
+
+#ifdef SPAMC_SSL
+ nred = SSL_read(ssl, buf, nbytes);
+#else
+ UNUSED_VARIABLE(ssl);
+ UNUSED_VARIABLE(buf);
+ UNUSED_VARIABLE(nbytes);
+ nred = 0; /* never used */
+#endif
+
+ } while (nred < 0 && errno == EWOULDBLOCK);
+
+#ifndef _WIN32
+ if (nred < 0 && errno == EINTR)
+ errno = ETIMEDOUT;
+
+ if (libspamc_timeout > 0) {
+ alarm(0);
}
- total += thistime;
- }
- return total;
+ /* restore old signal handler */
+ sig_catch(SIGALRM, sig);
+#endif
+
+ return nred;
}
-int
-full_write (int fd, const unsigned char *buf, int len)
+/* -------------------------------------------------------------------------- */
+
+int full_read(int fd, char fdflag, void *vbuf, int min, int len)
{
- int total;
- int thistime;
+ unsigned char *buf = (unsigned char *) vbuf;
+ int total;
+ int thistime;
+
+ for (total = 0; total < min;) {
+ thistime = fd_timeout_read(fd, fdflag, buf + total, len - total);
+
+ if (thistime < 0) {
+ if (total >= min) {
+ /* error, but we read *some*. return what we've read
+ * so far and next read (if there is one) will return -1. */
+ return total;
+ } else {
+ return -1;
+ }
+ }
+ else if (thistime == 0) {
+ /* EOF, but we didn't read the minimum. return what we've read
+ * so far and next read (if there is one) will return 0. */
+ return total;
+ }
- for (total = 0; total < len; ) {
- thistime = write (fd, buf+total, len-total);
+ total += thistime;
+ }
+ return total;
+}
+
+int full_read_ssl(SSL * ssl, unsigned char *buf, int min, int len)
+{
+ int total;
+ int thistime;
+
+ for (total = 0; total < min;) {
+ thistime = ssl_timeout_read(ssl, buf + total, len - total);
+
+ if (thistime < 0) {
+ if (total >= min) {
+ /* error, but we read *some*. return what we've read
+ * so far and next read (if there is one) will return -1. */
+ return total;
+ } else {
+ return -1;
+ }
+ }
+ else if (thistime == 0) {
+ /* EOF, but we didn't read the minimum. return what we've read
+ * so far and next read (if there is one) will return 0. */
+ return total;
+ }
+
+ total += thistime;
+ }
+ return total;
+}
+
+int full_write(int fd, char fdflag, const void *vbuf, int len)
+{
+ const char *buf = (const char *) vbuf;
+ int total;
+ int thistime;
+ int origerr;
- if (thistime < 0) {
- if(EINTR == errno || EAGAIN == errno) continue;
- return thistime; /* always an error for writes */
+ for (total = 0; total < len;) {
+ if (fdflag) {
+ thistime = write(fd, buf + total, len - total);
+ origerr = errno;
+ }
+ else {
+ thistime = send(fd, buf + total, len - total, 0);
+#ifndef _WIN32
+ origerr = errno;
+#else
+ origerr = WSAGetLastError();
+#endif
+ }
+ if (thistime < 0) {
+ if (EINTR == origerr || EWOULDBLOCK == origerr)
+ continue;
+ return thistime; /* always an error for writes */
+ }
+ total += thistime;
}
- total += thistime;
- }
- return total;
+ return total;
}
projects / claws.git / blobdiff