Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 141 insertions, 0 deletions

diff --git a/sync_pipe_write.c b/sync_pipe_write.c
new file mode 100644
index 0000000..c279e57
--- /dev/null
+++ b/sync_pipe_write.c
@@ -0,0 +1,141 @@
+/* sync_pipe_write.c
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <glib.h>
+
+#include <wsutil/file_util.h>
+#include <wsutil/ws_assert.h>
+
+#include "sync_pipe.h"
+
+/****************************************************************************************************************/
+/* sync_pipe handling */
+
+
+/* write a single message header to the recipient pipe */
+static ssize_t
+sync_pipe_write_header(int pipe_fd, char indicator, unsigned int length)
+{
+    guchar header[1+3]; /* indicator + 3-byte len */
+
+    ws_assert(length <= SP_MAX_MSG_LEN);
+
+    /* write header (indicator + 3-byte len) */
+    header[0] = indicator;
+    header[1] = (length >> 16) & 0xFF;
+    header[2] = (length >> 8) & 0xFF;
+    header[3] = (length >> 0) & 0xFF;
+
+    /* write header */
+    return ws_write(pipe_fd, header, sizeof header);
+}
+
+
+/* Write a message, with a string body, to the recipient pipe in the
+   standard format (1-byte message indicator, 3-byte message length
+   (excluding length and indicator field), and the string.
+   If msg is NULL, the message has only a length and indicator. */
+void
+sync_pipe_write_string_msg(int pipe_fd, char indicator, const char *msg)
+{
+    ssize_t ret;
+    int len;
+
+    /*ws_warning("write %d enter", pipe_fd);*/
+
+    if(msg != NULL) {
+        len = (int) strlen(msg) + 1;    /* including the terminating '\0'! */
+    } else {
+        len = 0;
+    }
+
+    /* write header (indicator + 3-byte len) */
+    ret = sync_pipe_write_header(pipe_fd, indicator, len);
+    if(ret == -1) {
+        return;
+    }
+
+    /* write value (if we have one) */
+    if(len) {
+        /*ws_warning("write %d indicator: %c value len: %u msg: %s", pipe_fd, indicator, len, msg);*/
+        ret = ws_write(pipe_fd, msg, len);
+        if(ret == -1) {
+            return;
+        }
+    } else {
+        /*ws_warning("write %d indicator: %c no value", pipe_fd, indicator);*/
+    }
+
+    /*ws_warning("write %d leave", pipe_fd);*/
+}
+
+
+/* Size of buffer to hold decimal representation of
+   signed/unsigned 64-bit int */
+#define SP_DECISIZE 20
+
+/* Write a message, with an unsigned integer body, to the recipient
+   pipe in the standard format (1-byte message indicator, 3-byte
+   message length (excluding length and indicator field), and the
+   unsigned integer, as a string. */
+void
+sync_pipe_write_uint_msg(int pipe_fd, char indicator, unsigned int num)
+{
+    char count_str[SP_DECISIZE+1+1];
+
+    snprintf(count_str, sizeof(count_str), "%u", num);
+    sync_pipe_write_string_msg(pipe_fd, indicator, count_str);
+}
+
+/* Write a message, with an integer body, to the recipient pipe in the
+   standard format (1-byte message indicator, 3-byte message length
+   (excluding length and indicator field), and the unsigned integer,
+   as a string. */
+void
+sync_pipe_write_int_msg(int pipe_fd, char indicator, int num)
+{
+    char count_str[SP_DECISIZE+1+1];
+
+    snprintf(count_str, sizeof(count_str), "%d", num);
+    sync_pipe_write_string_msg(pipe_fd, indicator, count_str);
+}
+
+/* Write a message, with a primary and secondary error message as the body,
+   to the recipient pipe.  The header is an SP_ERROR_MSG header, with the
+   length being the length of two string submessages; the submessages
+   are the body of the message, with each submessage being a message
+   with an indicator of SP_ERROR_MSG, the first message having the
+   primary error message string and the second message having the secondary
+   error message string. */
+void
+sync_pipe_write_errmsgs_to_parent(int pipe_fd, const char *error_msg,
+                                  const char *secondary_error_msg)
+{
+    sync_pipe_write_header(pipe_fd, SP_ERROR_MSG,
+                           (unsigned int) (strlen(error_msg) + 1 + 4 + strlen(secondary_error_msg) + 1 + 4));
+    sync_pipe_write_string_msg(pipe_fd, SP_ERROR_MSG, error_msg);
+    sync_pipe_write_string_msg(pipe_fd, SP_ERROR_MSG, secondary_error_msg);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */