diff options
Diffstat (limited to 'epan/export_object.c')
| -rw-r--r-- | epan/export_object.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/epan/export_object.c b/epan/export_object.c new file mode 100644 index 0000000000..5c7d38fb6e --- /dev/null +++ b/epan/export_object.c @@ -0,0 +1,206 @@ +/* export_object.c + * GUI independent helper routines common to all export object taps. + * + * 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 "proto.h" +#include "packet_info.h" +#include "export_object.h" + +struct register_eo { + int proto_id; /* protocol id (0-indexed) */ + const char* tap_listen_str; /* string used in register_tap_listener (NULL to use protocol name) */ + tap_packet_cb eo_func; /* function to be called for new incoming packets for SRT */ + export_object_gui_reset_cb reset_cb; /* function to parse parameters of optional arguments of tap string */ +}; + +static GSList *registered_eo_tables = NULL; + +static gint +insert_sorted_by_table_name(gconstpointer aparam, gconstpointer bparam) +{ + const register_eo_t *a = (const register_eo_t *)aparam; + const register_eo_t *b = (const register_eo_t *)bparam; + + return g_ascii_strcasecmp(proto_get_protocol_filter_name(a->proto_id), proto_get_protocol_filter_name(b->proto_id)); +} + +int +register_export_object(const int proto_id, tap_packet_cb export_packet_func, export_object_gui_reset_cb reset_cb) +{ + register_eo_t *table; + DISSECTOR_ASSERT(export_packet_func); + + table = g_new(register_eo_t,1); + + table->proto_id = proto_id; + table->tap_listen_str = g_strdup_printf("%s_eo", proto_get_protocol_filter_name(proto_id)); + table->eo_func = export_packet_func; + table->reset_cb = reset_cb; + + registered_eo_tables = g_slist_insert_sorted(registered_eo_tables, table, insert_sorted_by_table_name); + return register_tap(table->tap_listen_str); +} + +int get_eo_proto_id(register_eo_t* eo) +{ + if (!eo) { + return -1; + } + return eo->proto_id; +} + +const char* get_eo_tap_listener_name(register_eo_t* eo) +{ + return eo->tap_listen_str; +} + +tap_packet_cb get_eo_packet_func(register_eo_t* eo) +{ + return eo->eo_func; +} + +export_object_gui_reset_cb get_eo_reset_func(register_eo_t* eo) +{ + return eo->reset_cb; +} + +register_eo_t* get_eo_by_name(const char* name) +{ + guint i, size = g_slist_length(registered_eo_tables); + register_eo_t* eo; + GSList *slist; + + for (i = 0; i < size; i++) { + slist = g_slist_nth(registered_eo_tables, i); + eo = (register_eo_t*)slist->data; + + if (strcmp(name, proto_get_protocol_filter_name(eo->proto_id)) == 0) + return eo; + } + + return NULL; +} + +void eo_iterate_tables(GFunc func, gpointer user_data) +{ + g_slist_foreach(registered_eo_tables, func, user_data); +} + +static GString *eo_rename(GString *gstr, int dupn) +{ + GString *gstr_tmp; + gchar *tmp_ptr; + GString *ext_str; + + gstr_tmp = g_string_new("("); + g_string_append_printf (gstr_tmp, "%d)", dupn); + if ( (tmp_ptr = strrchr(gstr->str, '.')) != NULL ) { + /* Retain the extension */ + ext_str = g_string_new(tmp_ptr); + gstr = g_string_truncate(gstr, gstr->len - ext_str->len); + if ( gstr->len >= (EXPORT_OBJECT_MAXFILELEN - (strlen(gstr_tmp->str) + ext_str->len)) ) + gstr = g_string_truncate(gstr, EXPORT_OBJECT_MAXFILELEN - (strlen(gstr_tmp->str) + ext_str->len)); + gstr = g_string_append(gstr, gstr_tmp->str); + gstr = g_string_append(gstr, ext_str->str); + g_string_free(ext_str, TRUE); + } + else { + if ( gstr->len >= (EXPORT_OBJECT_MAXFILELEN - strlen(gstr_tmp->str)) ) + gstr = g_string_truncate(gstr, EXPORT_OBJECT_MAXFILELEN - strlen(gstr_tmp->str)); + gstr = g_string_append(gstr, gstr_tmp->str); + } + g_string_free(gstr_tmp, TRUE); + return gstr; +} + +GString * +eo_massage_str(const gchar *in_str, gsize maxlen, int dupn) +{ + gchar *tmp_ptr; + /* The characters in "reject" come from: + * http://msdn.microsoft.com/en-us/library/aa365247%28VS.85%29.aspx. + * Add to the list as necessary for other OS's. + */ + const gchar *reject = "<>:\"/\\|?*" + "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a" + "\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14" + "\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"; + GString *out_str; + GString *ext_str; + + out_str = g_string_new(""); + + /* Find all disallowed characters/bytes and replace them with %xx */ + while ( (tmp_ptr = strpbrk(in_str, reject)) != NULL ) { + out_str = g_string_append_len(out_str, in_str, tmp_ptr - in_str); + g_string_append_printf(out_str, "%%%02x", *tmp_ptr); + in_str = tmp_ptr + 1; + } + out_str = g_string_append(out_str, in_str); + if ( out_str->len > maxlen ) { + if ( (tmp_ptr = strrchr(out_str->str, '.')) != NULL ) { + /* Retain the extension */ + ext_str = g_string_new(tmp_ptr); + out_str = g_string_truncate(out_str, maxlen - ext_str->len); + out_str = g_string_append(out_str, ext_str->str); + g_string_free(ext_str, TRUE); + } + else + out_str = g_string_truncate(out_str, maxlen); + } + if ( dupn != 0 ) + out_str = eo_rename(out_str, dupn); + return out_str; +} + +const char * +eo_ct2ext(const char *content_type) +{ + /* TODO: Map the content type string to an extension string. If no match, + * return NULL. */ + return content_type; +} + +void eo_free_entry(export_object_entry_t *entry) +{ + g_free(entry->hostname); + g_free(entry->content_type); + g_free(entry->filename); + g_free(entry->payload_data); + + g_free(entry); +} +/* + * 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: + */ |