From Thomas ERSFELD (GSoC13)

Add TCP/UDP/SSL Follow feature to QtShark

Known issue :
* Duplicate code with GTK (function need follow_info_t struct but in GTK there is some GWidget variable in struct)
* Sometimes TCP Follow fail...

svn path=/trunk/; revision=51883

1 files changed, 125 insertions, 0 deletions

diff --git a/ui/follow.c b/ui/follow.c
new file mode 100644
index 0000000000..fe08c02156
--- /dev/null
+++ b/ui/follow.c
@@ -0,0 +1,125 @@
+/* follow.c
+ *
+ * $Id$
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <glib.h>
+
+#include <epan/filesystem.h>
+#include <epan/dfilter/dfilter.h>
+
+#include "ui/follow.h"
+
+#ifdef HAVE_LIBZ
+char *
+sgetline(char *str, int *next)
+{
+    char *end;
+
+    end = strstr(str, "\r\n");
+    if (!end) {
+        *next = (int)strlen(str);
+        return NULL;
+    }
+    *end = '\0';
+    *next = (int)(end-str+2);
+    return str;
+}
+
+gboolean
+parse_http_header(char *data, size_t len, size_t *content_start)
+{
+    char *tmp, *copy, *line;
+    size_t pos = 0;
+    int next_line;
+    gboolean is_gzipped;
+
+    /* XXX handle case where only partial header is passed in here.
+     * we should pass something back to indicate whether header is complete.
+     * (if not, is_gzipped is may still be unknown)
+     */
+
+    /*
+     * In order to parse header, we duplicate data and tokenize lines.
+     * We aren't interested in actual data, so use g_strndup instead of memcpy
+     * to (possibly) copy fewer bytes (e.g., if a nul byte exists in data)
+     * This also ensures that we have a terminated string for futher processing.
+     */
+    tmp = copy = g_strndup(data, len);
+    if (!tmp) {
+        *content_start = 0;
+        return FALSE;
+    }
+
+    /* skip HTTP... line*/
+    /*line = */sgetline(tmp, &next_line);
+
+    tmp += next_line;
+    pos += next_line;
+
+    is_gzipped = FALSE;
+
+    *content_start = -1;
+    while ((line = sgetline(tmp, &next_line))) {
+        char *key, *val, *c;
+
+        tmp += next_line;
+        pos += next_line;
+
+        if (strlen(line) == 0) {
+            /* end of header*/
+            break;
+        }
+
+        c = strchr(line, ':');
+        if (!c) break;
+
+        key = line;
+        *c = '\0';
+        val = c+2;
+
+        if (!strcmp(key, "Content-Encoding") && strstr(val, "gzip")) {
+            is_gzipped = TRUE;
+        }
+    }
+    *content_start = pos;
+    g_free(copy);
+    return is_gzipped;
+}
+#endif
+
+
+/*
+ * Editor modelines
+ *
+ * Local Variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */