forked from osmocom/wireshark
44e7ce54ff
Change-Id: Ib7d1b587b439ff21ec6b7f1756ce6ccf25b66f80 Reviewed-on: https://code.wireshark.org/review/6635 Reviewed-by: Guy Harris <guy@alum.mit.edu>
747 lines
20 KiB
C
747 lines
20 KiB
C
/*
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* uat.c
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*
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* User Accessible Tables
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* Mantain an array of user accessible data strucures
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*
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* (c) 2007, Luis E. Garcia Ontanon <luis@ontanon.org>
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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 2001 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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <glib.h>
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#include <wsutil/file_util.h>
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#include <wsutil/str_util.h>
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#include <wsutil/report_err.h>
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#include <wsutil/filesystem.h>
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#include <epan/packet.h>
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#include <epan/range.h>
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#include "uat-int.h"
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static GPtrArray* all_uats = NULL;
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void uat_init(void) {
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all_uats = g_ptr_array_new();
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}
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uat_t* uat_new(const char* name,
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size_t size,
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const char* filename,
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gboolean from_profile,
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void* data_ptr,
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guint* numitems_ptr,
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guint flags,
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const char* help,
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uat_copy_cb_t copy_cb,
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uat_update_cb_t update_cb,
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uat_free_cb_t free_cb,
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uat_post_update_cb_t post_update_cb,
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uat_field_t* flds_array) {
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/* Create new uat */
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uat_t* uat = (uat_t *)g_malloc(sizeof(uat_t));
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guint i;
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/* Add to global array of uats */
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if (!all_uats)
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all_uats = g_ptr_array_new();
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g_ptr_array_add(all_uats,uat);
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/* Check params */
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g_assert(name && size && filename && data_ptr && numitems_ptr);
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/* Set uat values from inputs */
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uat->name = g_strdup(name);
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uat->record_size = size;
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uat->filename = g_strdup(filename);
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uat->from_profile = from_profile;
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/* Callers of uat_new() pass in (void*) for data_ptr, because
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* that is the "universal" pointer type that can be cast to
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* anything. However, for our purposes, we want a (void**).
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* So, we cast (void*) data_ptr to (void**) here. That keeps
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* gcc -fstrict-aliasing from complaining. */
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uat->user_ptr = (void**) data_ptr;
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uat->nrows_p = numitems_ptr;
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uat->copy_cb = copy_cb;
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uat->update_cb = update_cb;
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uat->free_cb = free_cb;
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uat->post_update_cb = post_update_cb;
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uat->fields = flds_array;
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uat->user_data = g_array_new(FALSE,FALSE,(guint)uat->record_size);
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uat->raw_data = g_array_new(FALSE,FALSE,(guint)uat->record_size);
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uat->valid_data = g_array_new(FALSE,FALSE,sizeof(gboolean));
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uat->changed = FALSE;
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uat->loaded = FALSE;
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uat->from_global = FALSE;
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uat->rep = NULL;
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uat->free_rep = NULL;
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uat->help = help;
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uat->flags = flags;
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for (i=0;flds_array[i].title;i++) {
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fld_data_t* f = (fld_data_t *)g_malloc(sizeof(fld_data_t));
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f->colnum = i+1;
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f->rep = NULL;
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f->free_rep = NULL;
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flds_array[i].priv = f;
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}
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uat->ncols = i;
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*((void**)data_ptr) = NULL;
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*numitems_ptr = 0;
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return uat;
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}
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void* uat_add_record(uat_t* uat, const void* data, gboolean valid_rec) {
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void* rec;
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gboolean* valid;
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/* Save a copy of the raw (possibly that may contain invalid field values) data */
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g_array_append_vals (uat->raw_data, data, 1);
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rec = uat->raw_data->data + (uat->record_size * (uat->raw_data->len-1));
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if (uat->copy_cb) {
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uat->copy_cb(rec, data, (unsigned int) uat->record_size);
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}
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if (valid_rec) {
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/* Add a "known good" record to the list to be used by the dissector */
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g_array_append_vals (uat->user_data, data, 1);
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rec = uat->user_data->data + (uat->record_size * (uat->user_data->len-1));
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if (uat->copy_cb) {
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uat->copy_cb(rec, data, (unsigned int) uat->record_size);
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}
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UAT_UPDATE(uat);
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} else {
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rec = NULL;
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}
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g_array_append_vals (uat->valid_data, &valid_rec, 1);
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valid = (gboolean*)(uat->valid_data->data + (sizeof(gboolean) * (uat->valid_data->len-1)));
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*valid = valid_rec;
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return rec;
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}
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void uat_swap(uat_t* uat, guint a, guint b) {
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size_t s = uat->record_size;
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void* tmp;
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gboolean tmp_bool;
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g_assert( a < uat->raw_data->len && b < uat->raw_data->len );
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if (a == b) return;
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tmp = g_malloc(s);
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memcpy(tmp, UAT_INDEX_PTR(uat,a), s);
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memcpy(UAT_INDEX_PTR(uat,a), UAT_INDEX_PTR(uat,b), s);
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memcpy(UAT_INDEX_PTR(uat,b), tmp, s);
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g_free(tmp);
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tmp_bool = *(gboolean*)(uat->valid_data->data + (sizeof(gboolean) * (a)));
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*(gboolean*)(uat->valid_data->data + (sizeof(gboolean) * (a))) = *(gboolean*)(uat->valid_data->data + (sizeof(gboolean) * (b)));
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*(gboolean*)(uat->valid_data->data + (sizeof(gboolean) * (b))) = tmp_bool;
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}
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void uat_remove_record_idx(uat_t* uat, guint idx) {
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g_assert( idx < uat->raw_data->len );
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if (uat->free_cb) {
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uat->free_cb(UAT_INDEX_PTR(uat,idx));
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}
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g_array_remove_index(uat->raw_data, idx);
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g_array_remove_index(uat->valid_data, idx);
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}
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/* The returned filename was g_malloc()'d so the caller must free it */
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gchar* uat_get_actual_filename(uat_t* uat, gboolean for_writing) {
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gchar *pers_fname = NULL;
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if (! uat->from_global) {
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pers_fname = get_persconffile_path(uat->filename, uat->from_profile);
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}
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if ((! for_writing ) && (! file_exists(pers_fname) )) {
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gchar* data_fname = get_datafile_path(uat->filename);
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if (file_exists(data_fname)) {
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g_free(pers_fname);
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return data_fname;
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}
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g_free(data_fname);
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g_free(pers_fname);
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return NULL;
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}
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return pers_fname;
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}
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uat_t* uat_get_table_by_name(const char* name) {
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guint i;
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for (i=0; i < all_uats->len; i++) {
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uat_t* u = (uat_t *)g_ptr_array_index(all_uats,i);
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if ( g_str_equal(u->name,name) ) {
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return (u);
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}
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}
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return NULL;
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}
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static void putfld(FILE* fp, void* rec, uat_field_t* f) {
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guint fld_len;
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const char* fld_ptr;
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f->cb.tostr(rec,&fld_ptr,&fld_len,f->cbdata.tostr,f->fld_data);
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switch(f->mode){
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case PT_TXTMOD_NONE:
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case PT_TXTMOD_ENUM:
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case PT_TXTMOD_FILENAME:
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case PT_TXTMOD_DIRECTORYNAME:
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case PT_TXTMOD_STRING: {
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guint i;
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putc('"',fp);
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for(i=0;i<fld_len;i++) {
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char c = fld_ptr[i];
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if (c == '"' || c == '\\' || ! g_ascii_isprint((guchar)c) ) {
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fprintf(fp,"\\x%.2x",c);
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} else {
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putc(c,fp);
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}
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}
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putc('"',fp);
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break;
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}
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case PT_TXTMOD_HEXBYTES: {
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guint i;
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for(i=0;i<fld_len;i++) {
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fprintf(fp,"%.2x",((const guint8*)fld_ptr)[i]);
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}
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break;
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}
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default:
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g_assert_not_reached();
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}
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g_free((char*)fld_ptr);
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}
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gboolean uat_save(uat_t* uat, char** error) {
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guint i;
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gchar* fname = uat_get_actual_filename(uat,TRUE);
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FILE* fp;
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if (! fname ) return FALSE;
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fp = ws_fopen(fname,"w");
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if (!fp && errno == ENOENT) {
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/* Parent directory does not exist, try creating first */
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gchar *pf_dir_path = NULL;
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if (create_persconffile_dir(&pf_dir_path) != 0) {
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*error = g_strdup_printf("uat_save: error creating '%s'", pf_dir_path);
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g_free (pf_dir_path);
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return FALSE;
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}
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fp = ws_fopen(fname,"w");
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}
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if (!fp) {
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*error = g_strdup_printf("uat_save: error opening '%s': %s",fname,g_strerror(errno));
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return FALSE;
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}
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*error = NULL;
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g_free (fname);
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/* Ensure raw_data is synced with user_data and all "good" entries have been accounted for */
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/* Start by clearing current user_data */
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for ( i = 0 ; i < uat->user_data->len ; i++ ) {
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if (uat->free_cb) {
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uat->free_cb(UAT_USER_INDEX_PTR(uat,i));
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}
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}
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g_array_set_size(uat->user_data,0);
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*((uat)->user_ptr) = NULL;
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*((uat)->nrows_p) = 0;
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/* Now copy "good" raw_data entries to user_data */
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for ( i = 0 ; i < uat->raw_data->len ; i++ ) {
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void* rec = uat->raw_data->data + (uat->record_size * i);
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gboolean* valid = (gboolean*)(uat->valid_data->data + sizeof(gboolean)*i);
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if (*valid) {
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g_array_append_vals(uat->user_data, rec, 1);
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if (uat->copy_cb) {
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uat->copy_cb(UAT_USER_INDEX_PTR(uat,i), rec, (unsigned int) uat->record_size);
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}
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UAT_UPDATE(uat);
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}
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}
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fprintf(fp,"# This file is automatically generated, DO NOT MODIFY.\n");
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for ( i = 0 ; i < uat->user_data->len ; i++ ) {
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void* rec = uat->user_data->data + (uat->record_size * i);
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uat_field_t* f;
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guint j;
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f = uat->fields;
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for( j=0 ; j < uat->ncols ; j++ ) {
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putfld(fp, rec, &(f[j]));
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fputs((j == uat->ncols - 1) ? "\n" : "," ,fp);
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}
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}
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fclose(fp);
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uat->changed = FALSE;
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return TRUE;
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}
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void uat_destroy(uat_t* uat) {
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/* XXX still missing a destructor */
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g_ptr_array_remove(all_uats,uat);
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}
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uat_t *uat_find(gchar *name) {
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guint i;
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for (i=0; i < all_uats->len; i++) {
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uat_t* u = (uat_t *)g_ptr_array_index(all_uats,i);
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if (strcmp(u->name, name) == 0 || strcmp(u->filename, name) == 0) {
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return u;
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}
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}
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return NULL;
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}
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void uat_clear(uat_t* uat) {
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guint i;
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for ( i = 0 ; i < uat->user_data->len ; i++ ) {
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if (uat->free_cb) {
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uat->free_cb(UAT_USER_INDEX_PTR(uat,i));
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}
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}
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for ( i = 0 ; i < uat->raw_data->len ; i++ ) {
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if (uat->free_cb) {
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uat->free_cb(UAT_INDEX_PTR(uat,i));
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}
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}
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g_array_set_size(uat->raw_data,0);
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g_array_set_size(uat->user_data,0);
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g_array_set_size(uat->valid_data,0);
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*((uat)->user_ptr) = NULL;
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*((uat)->nrows_p) = 0;
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}
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void uat_unload_all(void) {
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guint i;
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for (i=0; i < all_uats->len; i++) {
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uat_t* u = (uat_t *)g_ptr_array_index(all_uats,i);
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/* Do not unload if not in profile */
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if (u->from_profile) {
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uat_clear(u);
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u->loaded = FALSE;
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}
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}
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}
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#if 0
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static void uat_cleanup(void) {
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while( all_uats->len ) {
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uat_destroy((uat_t*)all_uats->pdata);
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}
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g_ptr_array_free(all_uats,TRUE);
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}
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#endif
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void uat_foreach_table(uat_cb_t cb,void* user_data) {
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guint i;
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for (i=0; i < all_uats->len; i++)
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cb(g_ptr_array_index(all_uats,i), user_data);
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}
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void uat_load_all(void) {
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guint i;
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gchar* err;
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for (i=0; i < all_uats->len; i++) {
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uat_t* u = (uat_t *)g_ptr_array_index(all_uats,i);
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if (!u->loaded) {
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err = NULL;
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if (!uat_load(u, &err)) {
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report_failure("Error loading table '%s': %s",u->name,err);
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g_free(err);
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}
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}
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}
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}
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gboolean uat_fld_chk_str(void* u1 _U_, const char* strptr, guint len _U_, const void* u2 _U_, const void* u3 _U_, char** err) {
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if (strptr == NULL) {
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*err = g_strdup("NULL pointer");
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return FALSE;
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}
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*err = NULL;
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return TRUE;
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}
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gboolean uat_fld_chk_oid(void* u1 _U_, const char* strptr, guint len, const void* u2 _U_, const void* u3 _U_, char** err) {
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unsigned int i;
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*err = NULL;
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if (strptr == NULL) {
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*err = g_strdup("NULL pointer");
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return FALSE;
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}
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for(i = 0; i < len; i++)
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if(!(g_ascii_isdigit(strptr[i]) || strptr[i] == '.')) {
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*err = g_strdup("Only digits [0-9] and \".\" allowed in an OID");
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return FALSE;
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}
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if(strptr[len-1] == '.') {
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*err = g_strdup("OIDs must not be terminated with a \".\"");
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return FALSE;
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}
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if(!((*strptr == '0' || *strptr == '1' || *strptr =='2') && (len > 1 && strptr[1] == '.'))) {
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*err = g_strdup("OIDs must start with \"0.\" (ITU-T assigned), \"1.\" (ISO assigned) or \"2.\" (joint ISO/ITU-T assigned)");
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return FALSE;
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}
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/* should also check that the second arc is in the range 0-39 */
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return *err == NULL;
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}
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gboolean uat_fld_chk_proto(void* u1 _U_, const char* strptr, guint len, const void* u2 _U_, const void* u3 _U_, char** err) {
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if (len) {
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char* name = g_strndup(strptr,len);
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ascii_strdown_inplace(name);
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g_strchug(name);
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if (find_dissector(name)) {
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*err = NULL;
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g_free(name);
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return TRUE;
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} else {
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*err = g_strdup("dissector not found");
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g_free(name);
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return FALSE;
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}
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} else {
|
|
*err = NULL;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
static gboolean uat_fld_chk_num(int base, const char* strptr, guint len, char** err) {
|
|
if (len > 0) {
|
|
char* str = g_strndup(strptr,len);
|
|
char* strn;
|
|
long i;
|
|
|
|
errno = 0;
|
|
i = strtol(str,&strn,base);
|
|
|
|
if (((i == G_MAXLONG || i == G_MINLONG) && errno == ERANGE)
|
|
|| (errno != 0 && i == 0)) {
|
|
*err = g_strdup(g_strerror(errno));
|
|
g_free(str);
|
|
return FALSE;
|
|
}
|
|
if ((*strn != '\0') && (*strn != ' ')) {
|
|
*err = g_strdup("Invalid value");
|
|
g_free(str);
|
|
return FALSE;
|
|
}
|
|
/* Allow only 32bit values */
|
|
if ((sizeof(long) > 4) && ((i < G_MININT) || (i > G_MAXINT))) {
|
|
*err = g_strdup("Value too large");
|
|
g_free(str);
|
|
return FALSE;
|
|
}
|
|
|
|
g_free(str);
|
|
}
|
|
|
|
*err = NULL;
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean uat_fld_chk_num_dec(void* u1 _U_, const char* strptr, guint len, const void* u2 _U_, const void* u3 _U_, char** err) {
|
|
return uat_fld_chk_num(10, strptr, len, err);
|
|
}
|
|
|
|
gboolean uat_fld_chk_num_hex(void* u1 _U_, const char* strptr, guint len, const void* u2 _U_, const void* u3 _U_, char** err) {
|
|
return uat_fld_chk_num(16, strptr, len, err);
|
|
}
|
|
|
|
gboolean uat_fld_chk_enum(void* u1 _U_, const char* strptr, guint len, const void* v, const void* u3 _U_, char** err) {
|
|
char* str = g_strndup(strptr,len);
|
|
guint i;
|
|
const value_string* vs = (const value_string *)v;
|
|
|
|
for(i=0;vs[i].strptr;i++) {
|
|
if (g_str_equal(vs[i].strptr,str)) {
|
|
*err = NULL;
|
|
g_free(str);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
*err = g_strdup_printf("invalid value: %s",str);
|
|
g_free(str);
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean uat_fld_chk_range(void* u1 _U_, const char* strptr, guint len, const void* v _U_, const void* u3, char** err) {
|
|
char* str = g_strndup(strptr,len);
|
|
range_t* r = NULL;
|
|
convert_ret_t ret = range_convert_str(&r, str,GPOINTER_TO_UINT(u3));
|
|
gboolean ret_value = FALSE;
|
|
|
|
switch ( ret ) {
|
|
case CVT_NO_ERROR:
|
|
*err = NULL;
|
|
ret_value = TRUE;
|
|
break;
|
|
case CVT_SYNTAX_ERROR:
|
|
*err = g_strdup_printf("syntax error in range: %s",str);
|
|
ret_value = FALSE;
|
|
break;
|
|
case CVT_NUMBER_TOO_BIG:
|
|
*err = g_strdup_printf("value too large in range: '%s' (max = %u)",str,GPOINTER_TO_UINT(u3));
|
|
ret_value = FALSE;
|
|
break;
|
|
default:
|
|
*err = g_strdup("This should not happen, it is a bug in wireshark! please report to wireshark-dev@wireshark.org");
|
|
ret_value = FALSE;
|
|
break;
|
|
}
|
|
|
|
g_free(str);
|
|
return ret_value;
|
|
}
|
|
|
|
char* uat_unbinstring(const char* si, guint in_len, guint* len_p) {
|
|
guint8* buf;
|
|
guint len = in_len/2;
|
|
int i = 0;
|
|
int d0, d1;
|
|
|
|
if (in_len%2) {
|
|
return NULL;
|
|
}
|
|
|
|
buf= (guint8 *)g_malloc0(len+1);
|
|
if (len_p) *len_p = len;
|
|
|
|
while(in_len) {
|
|
d1 = ws_xton(*(si++));
|
|
d0 = ws_xton(*(si++));
|
|
|
|
buf[i++] = (d1 * 16) + d0;
|
|
|
|
in_len -= 2;
|
|
}
|
|
|
|
return (char*)buf;
|
|
}
|
|
|
|
char* uat_unesc(const char* si, guint in_len, guint* len_p) {
|
|
char* buf = (char *)g_malloc0(in_len+1);
|
|
char* p = buf;
|
|
guint len = 0;
|
|
const char* s;
|
|
const char* in_end = si+in_len;
|
|
|
|
for (s = (const char *)si; s < in_end; s++) {
|
|
switch(*s) {
|
|
case '\\':
|
|
switch(*(++s)) {
|
|
case 'a': *(p++) = '\a'; len++; break;
|
|
case 'b': *(p++) = '\b'; len++; break;
|
|
case 'e': *(p++) = '\033' /* '\e' is non ANSI-C */; len++; break;
|
|
case 'f': *(p++) = '\f'; len++; break;
|
|
case 'n': *(p++) = '\n'; len++; break;
|
|
case 'r': *(p++) = '\r'; len++; break;
|
|
case 't': *(p++) = '\t'; len++; break;
|
|
case 'v': *(p++) = '\v'; len++; break;
|
|
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
{
|
|
int c0 = 0;
|
|
int c1 = 0;
|
|
int c2 = 0;
|
|
int c = 0;
|
|
|
|
c0 = (*s) - '0';
|
|
|
|
if ( s[1] >= '0' && s[1] <= '7' ) {
|
|
c1 = c0;
|
|
c0 = (*++s) - '0';
|
|
|
|
if ( s[1] >= '0' && s[1] <= '7' ) {
|
|
c2 = c1;
|
|
c1 = c0;
|
|
c0 = (*++s) - '0';
|
|
}
|
|
}
|
|
c = (64 * c2) + (8 * c1) + c0;
|
|
*(p++) = (char) (c > 255 ? 255 : c);
|
|
len++;
|
|
break;
|
|
}
|
|
|
|
case 'x':
|
|
{
|
|
char c1 = *(s+1);
|
|
char c0 = *(s+2);
|
|
|
|
if (g_ascii_isxdigit(c1) && g_ascii_isxdigit(c0)) {
|
|
*(p++) = (ws_xton(c1) * 0x10) + ws_xton(c0);
|
|
s += 2;
|
|
} else {
|
|
*(p++) = *s;
|
|
}
|
|
len++;
|
|
break;
|
|
}
|
|
default:
|
|
*p++ = *s;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
*(p++) = *s;
|
|
len++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (len_p) *len_p = len;
|
|
return buf;
|
|
}
|
|
|
|
char* uat_undquote(const char* si, guint in_len, guint* len_p) {
|
|
return uat_unesc(si+1,in_len-2,len_p);
|
|
}
|
|
|
|
|
|
char* uat_esc(const char* buf, guint len) {
|
|
const guint8* end = ((const guint8*)buf)+len;
|
|
char* out = (char *)g_malloc0((4*len)+1);
|
|
const guint8* b;
|
|
char* s = out;
|
|
|
|
for (b = (const guint8 *)buf; b < end; b++) {
|
|
if (g_ascii_isprint(*b) ) {
|
|
*(s++) = (*b);
|
|
} else {
|
|
g_snprintf(s,5,"\\x%.2x",((guint)*b));
|
|
s+=4;
|
|
}
|
|
}
|
|
|
|
return out;
|
|
|
|
}
|
|
|
|
CHK_STR_IS_DEF(isprint)
|
|
CHK_STR_IS_DEF(isalpha)
|
|
CHK_STR_IS_DEF(isalnum)
|
|
CHK_STR_IS_DEF(isdigit)
|
|
CHK_STR_IS_DEF(isxdigit)
|
|
|
|
/*
|
|
* 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:
|
|
*/
|