forked from osmocom/wireshark
126 lines
2.9 KiB
C
126 lines
2.9 KiB
C
/* follow.c
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <glib.h>
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#include <epan/filesystem.h>
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#include <epan/dfilter/dfilter.h>
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#include "ui/follow.h"
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#ifdef HAVE_LIBZ
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char *
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sgetline(char *str, int *next)
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{
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char *end;
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end = strstr(str, "\r\n");
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if (!end) {
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*next = (int)strlen(str);
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return NULL;
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}
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*end = '\0';
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*next = (int)(end-str+2);
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return str;
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}
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gboolean
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parse_http_header(char *data, size_t len, size_t *content_start)
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{
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char *tmp, *copy, *line;
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size_t pos = 0;
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int next_line;
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gboolean is_gzipped;
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/* XXX handle case where only partial header is passed in here.
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* we should pass something back to indicate whether header is complete.
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* (if not, is_gzipped is may still be unknown)
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*/
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/*
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* In order to parse header, we duplicate data and tokenize lines.
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* We aren't interested in actual data, so use g_strndup instead of memcpy
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* to (possibly) copy fewer bytes (e.g., if a nul byte exists in data)
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* This also ensures that we have a terminated string for futher processing.
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*/
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tmp = copy = g_strndup(data, len);
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if (!tmp) {
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*content_start = 0;
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return FALSE;
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}
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/* skip HTTP... line*/
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/*line = */sgetline(tmp, &next_line);
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tmp += next_line;
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pos += next_line;
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is_gzipped = FALSE;
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*content_start = -1;
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while ((line = sgetline(tmp, &next_line))) {
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char *key, *val, *c;
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tmp += next_line;
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pos += next_line;
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if (strlen(line) == 0) {
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/* end of header*/
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break;
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}
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c = strchr(line, ':');
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if (!c) break;
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key = line;
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*c = '\0';
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val = c+2;
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if (!strcmp(key, "Content-Encoding") && strstr(val, "gzip")) {
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is_gzipped = TRUE;
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}
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}
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*content_start = pos;
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g_free(copy);
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return is_gzipped;
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}
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#endif
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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