src/filter.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999,2000 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <string.h>
  26 #include <strings.h>
  27 #include <stdlib.h>
  28
  29 #include "intl.h"
  30 #include "procheader.h"
  31 #include "filter.h"
  32 #include "folder.h"
  33 #include "utils.h"
  34
  35 FolderItem *filter_get_dest_folder(GSList *fltlist, const gchar *file)
  36 {
  37         static FolderItem *dummy = NULL;
  38         FolderItem *dest_folder = NULL;
  39         GSList *hlist, *cur;
  40         Filter *filter;
  41
  42         g_return_val_if_fail(file != NULL, NULL);
  43         if (!fltlist) return NULL;
  44
  45         hlist = procheader_get_header_list_from_file(file);
  46         if (!hlist) return NULL;
  47
  48         for (cur = fltlist; cur != NULL; cur = cur->next) {
  49                 filter = (Filter *)cur->data;
  50                 if (filter_match_condition(filter, hlist)) {
  51                         if (filter->action == FLT_NOTRECV) {
  52                                 if (!dummy) {
  53                                         dummy = folder_item_new(NULL, NULL);
  54                                         dummy->path = g_strdup(FILTER_NOT_RECEIVE);
  55                                 }
  56                                 dest_folder = dummy;
  57                         } else
  58                                 dest_folder = folder_find_item_from_path
  59                                         (filter->dest);
  60                         break;
  61                 }
  62         }
  63
  64         procheader_header_list_destroy(hlist);
  65
  66         return dest_folder;
  67 }
  68
  69 static gboolean strfind(const gchar *haystack, const gchar *needle)
  70 {
  71         return strstr(haystack, needle) != NULL ? TRUE : FALSE;
  72 }
  73
  74 static gboolean strnotfind(const gchar *haystack, const gchar *needle)
  75 {
  76         return strstr(haystack, needle) != NULL ? FALSE : TRUE;
  77 }
  78
  79 static gboolean strcasefind(const gchar *haystack, const gchar *needle)
  80 {
  81         return strcasestr(haystack, needle) != NULL ? TRUE : FALSE;
  82 }
  83
  84 static gboolean strcasenotfind(const gchar *haystack, const gchar *needle)
  85 {
  86         return strcasestr(haystack, needle) != NULL ? FALSE : TRUE;
  87 }
  88
  89 gboolean filter_match_condition(Filter *filter, GSList *hlist)
  90 {
  91         Header *header;
  92         gboolean (*StrFind1)    (const gchar *hs, const gchar *nd);
  93         gboolean (*StrFind2)    (const gchar *hs, const gchar *nd);
  94
  95         g_return_val_if_fail(filter->name1 != NULL, FALSE);
  96
  97         if (FLT_IS_CASE_SENS(filter->flag1))
  98                 StrFind1 = FLT_IS_CONTAIN(filter->flag1)
  99                         ? strfind : strnotfind;
 100         else
 101                 StrFind1 = FLT_IS_CONTAIN(filter->flag1)
 102                         ? strcasefind : strcasenotfind;
 103
 104         if (FLT_IS_CASE_SENS(filter->flag2))
 105                 StrFind2 = FLT_IS_CONTAIN(filter->flag2)
 106                         ? strfind : strnotfind;
 107         else
 108                 StrFind2 = FLT_IS_CONTAIN(filter->flag2)
 109                         ? strcasefind : strcasenotfind;
 110
 111         if (filter->cond == FLT_AND) {
 112                 gboolean match1 = FALSE, match2 = FALSE;
 113
 114                 /* ignore second condition if not set */
 115                 if (!filter->name2) match2 = TRUE;
 116
 117                 for (; hlist != NULL; hlist = hlist->next) {
 118                         header = hlist->data;
 119
 120                         if (!match1 &&
 121                             procheader_headername_equal(header->name,
 122                                                         filter->name1)) {
 123                                 if (!filter->body1 ||
 124                                     StrFind1(header->body, filter->body1))
 125                                         match1 = TRUE;
 126                         }
 127                         if (!match2 &&
 128                             procheader_headername_equal(header->name,
 129                                                          filter->name2)) {
 130                                 if (!filter->body2 ||
 131                                     StrFind2(header->body, filter->body2))
 132                                         match2 = TRUE;
 133                         }
 134
 135                         if (match1 && match2) return TRUE;
 136                 }
 137         } else if (filter->cond == FLT_OR) {
 138                 for (; hlist != NULL; hlist = hlist->next) {
 139                         header = hlist->data;
 140
 141                         if (procheader_headername_equal(header->name,
 142                                                         filter->name1))
 143                                 if (!filter->body1 ||
 144                                     StrFind1(header->body, filter->body1))
 145                                         return TRUE;
 146                         if (filter->name2 &&
 147                             procheader_headername_equal(header->name,
 148                                                         filter->name2))
 149                                 if (!filter->body2 ||
 150                                     StrFind2(header->body, filter->body2))
 151                                         return TRUE;
 152                 }
 153         }
 154
 155         return FALSE;
 156 }
 157
 158 gchar *filter_get_str(Filter *filter)
 159 {
 160         gchar *str;
 161
 162         str = g_strdup_printf
 163                 ("%s\t%s\t%c\t%s\t%s\t%s\t%d\t%d\t%c",
 164                  filter->name1, filter->body1 ? filter->body1 : "",
 165                  filter->name2 ? (filter->cond == FLT_AND ? '&' : '|') : ' ',
 166                  filter->name2 ? filter->name2 : "",
 167                  filter->body2 ? filter->body2 : "",
 168                  filter->dest ? filter->dest : "",
 169                  (guint)filter->flag1, (guint)filter->flag2,
 170                  filter->action == FLT_MOVE    ? 'm' :
 171                  filter->action == FLT_NOTRECV ? 'n' :
 172                  filter->action == FLT_DELETE  ? 'd' : ' ');
 173
 174         return str;
 175 }
 176
 177 #define PARSE_ONE_PARAM(p, srcp) \
 178 { \
 179         p = strchr(srcp, '\t'); \
 180         if (!p) return NULL; \
 181         else \
 182                 *p++ = '\0'; \
 183 }
 184
 185 Filter *filter_read_str(const gchar *str)
 186 {
 187         Filter *filter;
 188         gchar *tmp;
 189         gchar *name1, *body1, *op, *name2, *body2, *dest;
 190         gchar *flag1 = NULL, *flag2 = NULL, *action = NULL;
 191
 192         Xalloca(tmp, strlen(str) + 1, return NULL);
 193         strcpy(tmp, str);
 194
 195         name1 = tmp;
 196         PARSE_ONE_PARAM(body1, name1);
 197         PARSE_ONE_PARAM(op, body1);
 198         PARSE_ONE_PARAM(name2, op);
 199         PARSE_ONE_PARAM(body2, name2);
 200         PARSE_ONE_PARAM(dest, body2);
 201         if (strchr(dest, '\t')) {
 202                 gchar *p;
 203
 204                 PARSE_ONE_PARAM(flag1, dest);
 205                 PARSE_ONE_PARAM(flag2, flag1);
 206                 PARSE_ONE_PARAM(action, flag2);
 207                 if ((p = strchr(action, '\t'))) *p = '\0';
 208         }
 209
 210         filter = g_new0(Filter, 1);
 211         filter->name1 = *name1 ? g_strdup(name1) : NULL;
 212         filter->body1 = *body1 ? g_strdup(body1) : NULL;
 213         filter->name2 = *name2 ? g_strdup(name2) : NULL;
 214         filter->body2 = *body2 ? g_strdup(body2) : NULL;
 215         filter->cond = (*op == '|') ? FLT_OR : FLT_AND;
 216         filter->dest = *dest ? g_strdup(dest) : NULL;
 217
 218         filter->flag1 = FLT_CONTAIN;
 219         filter->flag2 = FLT_CONTAIN;
 220         if (flag1) filter->flag1 = (FilterFlag)strtoul(flag1, NULL, 10);
 221         if (flag2) filter->flag2 = (FilterFlag)strtoul(flag2, NULL, 10);
 222
 223         if (!strcmp2(dest, FILTER_NOT_RECEIVE))
 224                 filter->action = FLT_NOTRECV;
 225         else
 226                 filter->action = FLT_MOVE;
 227         if (action) {
 228                 switch (*action) {
 229                 case 'm': filter->action = FLT_MOVE;    break;
 230                 case 'n': filter->action = FLT_NOTRECV; break;
 231                 case 'd': filter->action = FLT_DELETE;  break;
 232                 default:  g_warning("Invalid action: `%c'\n", *action);
 233                 }
 234         }
 235
 236         return filter;
 237 }
 238
 239 void filter_free(Filter *filter)
 240 {
 241         if (!filter) return;
 242
 243         g_free(filter->name1);
 244         g_free(filter->body1);
 245
 246         g_free(filter->name2);
 247         g_free(filter->body2);
 248
 249         g_free(filter->dest);
 250
 251         g_free(filter);
 252 }