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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
commitb5896ba9f6047e7031e2bdee0622d543e11a6734 (patch)
treefd7b460593a2fee1be579bec5697e6d887ea3421 /src/util/recv_pass_attr.c
parentInitial commit. (diff)
downloadpostfix-upstream/3.4.23.tar.xz
postfix-upstream/3.4.23.zip
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--src/util/recv_pass_attr.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/src/util/recv_pass_attr.c b/src/util/recv_pass_attr.c
new file mode 100644
index 0000000..0d6c647
--- /dev/null
+++ b/src/util/recv_pass_attr.c
@@ -0,0 +1,98 @@
+/*++
+/* NAME
+/* recv_pass_attr 3
+/* SUMMARY
+/* predicate if string is all numerical
+/* SYNOPSIS
+/* #include <listen.h>
+/*
+/* int recv_pass_attr(fd, attr, timeout, bufsize)
+/* int fd;
+/* HTABLE **attr;
+/* int timeout;
+/* ssize_t bufsize;
+/* DESCRIPTION
+/* recv_pass_attr() receives named attributes over the specified
+/* descriptor. The result value is zero for success, -1 for error.
+/*
+/* Arguments:
+/* .IP fd
+/* The file descriptor to read from.
+/* .IP attr
+/* Pointer to attribute list pointer. The target is set to
+/* zero on error or when the received attribute list is empty,
+/* otherwise it is assigned a pointer to non-empty attribute
+/* list.
+/* .IP timeout
+/* The deadline for receiving all attributes.
+/* .IP bufsize
+/* The read buffer size. Specify 1 to avoid reading past the
+/* end of the attribute list.
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*
+/* Wietse Venema
+/* Google, Inc.
+/* 111 8th Avenue
+/* New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+
+/* Utility library. */
+
+#include <iostuff.h>
+#include <htable.h>
+#include <vstream.h>
+#include <attr.h>
+#include <mymalloc.h>
+#include <listen.h>
+
+/* recv_pass_attr - receive connection attributes */
+
+int recv_pass_attr(int fd, HTABLE **attr, int timeout, ssize_t bufsize)
+{
+ VSTREAM *fp;
+ int stream_err;
+
+ /*
+ * Set up a temporary VSTREAM to receive the attributes.
+ *
+ * XXX We use one-character reads to simplify the implementation.
+ */
+ fp = vstream_fdopen(fd, O_RDWR);
+ vstream_control(fp,
+ CA_VSTREAM_CTL_BUFSIZE(bufsize),
+ CA_VSTREAM_CTL_TIMEOUT(timeout),
+ CA_VSTREAM_CTL_START_DEADLINE,
+ CA_VSTREAM_CTL_END);
+ stream_err = (attr_scan(fp, ATTR_FLAG_NONE,
+ ATTR_TYPE_HASH, *attr = htable_create(1),
+ ATTR_TYPE_END) < 0
+ || vstream_feof(fp) || vstream_ferror(fp));
+ vstream_fdclose(fp);
+
+ /*
+ * Error reporting and recovery.
+ */
+ if (stream_err) {
+ htable_free(*attr, myfree);
+ *attr = 0;
+ return (-1);
+ } else {
+ if ((*attr)->used == 0) {
+ htable_free(*attr, myfree);
+ *attr = 0;
+ }
+ return (0);
+ }
+}