src/filter.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 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 #include <sys/types.h>
  29 #include <regex.h>
  30
  31 #include "intl.h"
  32 #include "procheader.h"
  33 #include "filter.h"
  34 #include "folder.h"
  35 #include "utils.h"
  36
  37 FolderItem *filter_get_dest_folder(GSList *fltlist, const gchar *file)
  38 {
  39         static FolderItem *dummy = NULL;
  40         FolderItem *dest_folder = NULL;
  41         GSList *hlist, *cur;
  42         Filter *filter;
  43
  44         g_return_val_if_fail(file != NULL, NULL);
  45         if (!fltlist) return NULL;
  46
  47         hlist = procheader_get_header_list_from_file(file);
  48         if (!hlist) return NULL;
  49
  50         for (cur = fltlist; cur != NULL; cur = cur->next) {
  51                 filter = (Filter *)cur->data;
  52                 if (filter_match_condition(filter, hlist)) {
  53                         if (filter->action == FLT_NOTRECV) {
  54                                 if (!dummy) {
  55                                         dummy = folder_item_new(NULL, NULL);
  56                                         dummy->path = g_strdup(FILTER_NOT_RECEIVE);
  57                                 }
  58                                 dest_folder = dummy;
  59                         } else
  60                                 dest_folder = folder_find_item_from_path
  61                                         (filter->dest);
  62                         break;
  63                 }
  64         }
  65
  66         procheader_header_list_destroy(hlist);
  67
  68         return dest_folder;
  69 }
  70
  71 static gboolean strfind(const gchar *haystack, const gchar *needle)
  72 {
  73         return strstr(haystack, needle) != NULL ? TRUE : FALSE;
  74 }
  75
  76 static gboolean strnotfind(const gchar *haystack, const gchar *needle)
  77 {
  78         return strstr(haystack, needle) != NULL ? FALSE : TRUE;
  79 }
  80
  81 static gboolean strcasefind(const gchar *haystack, const gchar *needle)
  82 {
  83         return strcasestr(haystack, needle) != NULL ? TRUE : FALSE;
  84 }
  85
  86 static gboolean strcasenotfind(const gchar *haystack, const gchar *needle)
  87 {
  88         return strcasestr(haystack, needle) != NULL ? FALSE : TRUE;
  89 }
  90
  91 static gboolean strmatch_regex(const gchar *haystack, const gchar *needle)
  92 {
  93         gint ret = 0;
  94         regex_t preg;
  95         regmatch_t pmatch[1];
  96
  97         ret = regcomp(&preg, needle, 0);
  98         if (ret != 0) return FALSE;
  99
 100         ret = regexec(&preg, haystack, 1, pmatch, 0);
 101         regfree(&preg);
 102
 103         if (ret == REG_NOMATCH) return FALSE;
 104
 105         if (pmatch[0].rm_so != -1)
 106                 return TRUE;
 107         else
 108                 return FALSE;
 109 }
 110
 111 gboolean filter_match_condition(Filter *filter, GSList *hlist)
 112 {
 113         Header *header;
 114         gboolean (*StrFind1)    (const gchar *hs, const gchar *nd);
 115         gboolean (*StrFind2)    (const gchar *hs, const gchar *nd);
 116
 117         g_return_val_if_fail(filter->name1 != NULL, FALSE);
 118
 119         if (FLT_IS_REGEX(filter->flag1))
 120                 StrFind1 = strmatch_regex;
 121         else if (FLT_IS_CASE_SENS(filter->flag1))
 122                 StrFind1 = FLT_IS_CONTAIN(filter->flag1)
 123                         ? strfind : strnotfind;
 124         else
 125                 StrFind1 = FLT_IS_CONTAIN(filter->flag1)
 126                         ? strcasefind : strcasenotfind;
 127
 128         if (FLT_IS_REGEX(filter->flag2))
 129                 StrFind2 = strmatch_regex;
 130         if (FLT_IS_CASE_SENS(filter->flag2))
 131                 StrFind2 = FLT_IS_CONTAIN(filter->flag2)
 132                         ? strfind : strnotfind;
 133         else
 134                 StrFind2 = FLT_IS_CONTAIN(filter->flag2)
 135                         ? strcasefind : strcasenotfind;
 136
 137         if (filter->cond == FLT_AND) {
 138                 gboolean match1 = FALSE, match2 = FALSE;
 139
 140                 /* ignore second condition if not set */
 141                 if (!filter->name2) match2 = TRUE;
 142
 143                 for (; hlist != NULL; hlist = hlist->next) {
 144                         header = hlist->data;
 145
 146                         if (!match1 &&
 147                             procheader_headername_equal(header->name,
 148                                                         filter->name1)) {
 149                                 if (!filter->body1 ||
 150                                     StrFind1(header->body, filter->body1))
 151                                         match1 = TRUE;
 152                         }
 153                         if (!match2 &&
 154                             procheader_headername_equal(header->name,
 155                                                          filter->name2)) {
 156                                 if (!filter->body2 ||
 157                                     StrFind2(header->body, filter->body2))
 158                                         match2 = TRUE;
 159                         }
 160
 161                         if (match1 && match2) return TRUE;
 162                 }
 163         } else if (filter->cond == FLT_OR) {
 164                 for (; hlist != NULL; hlist = hlist->next) {
 165                         header = hlist->data;
 166
 167                         if (procheader_headername_equal(header->name,
 168                                                         filter->name1))
 169                                 if (!filter->body1 ||
 170                                     StrFind1(header->body, filter->body1))
 171                                         return TRUE;
 172                         if (filter->name2 &&
 173                             procheader_headername_equal(header->name,
 174                                                         filter->name2))
 175                                 if (!filter->body2 ||
 176                                     StrFind2(header->body, filter->body2))
 177                                         return TRUE;
 178                 }
 179         }
 180
 181         return FALSE;
 182 }
 183
 184 gchar *filter_get_str(Filter *filter)
 185 {
 186         gchar *str;
 187
 188         str = g_strdup_printf
 189                 ("%s\t%s\t%c\t%s\t%s\t%s\t%d\t%d\t%c",
 190                  filter->name1, filter->body1 ? filter->body1 : "",
 191                  filter->name2 ? (filter->cond == FLT_AND ? '&' : '|') : ' ',
 192                  filter->name2 ? filter->name2 : "",
 193                  filter->body2 ? filter->body2 : "",
 194                  filter->dest ? filter->dest : "",
 195                  (guint)filter->flag1, (guint)filter->flag2,
 196                  filter->action == FLT_MOVE    ? 'm' :
 197                  filter->action == FLT_NOTRECV ? 'n' :
 198                  filter->action == FLT_DELETE  ? 'd' : ' ');
 199
 200         return str;
 201 }
 202
 203 #define PARSE_ONE_PARAM(p, srcp) \
 204 { \
 205         p = strchr(srcp, '\t'); \
 206         if (!p) return NULL; \
 207         else \
 208                 *p++ = '\0'; \
 209 }
 210
 211 Filter *filter_read_str(const gchar *str)
 212 {
 213         Filter *filter;
 214         gchar *tmp;
 215         gchar *name1, *body1, *op, *name2, *body2, *dest;
 216         gchar *flag1 = NULL, *flag2 = NULL, *action = NULL;
 217
 218         Xstrdup_a(tmp, str, return NULL);
 219
 220         name1 = tmp;
 221         PARSE_ONE_PARAM(body1, name1);
 222         PARSE_ONE_PARAM(op, body1);
 223         PARSE_ONE_PARAM(name2, op);
 224         PARSE_ONE_PARAM(body2, name2);
 225         PARSE_ONE_PARAM(dest, body2);
 226         if (strchr(dest, '\t')) {
 227                 gchar *p;
 228
 229                 PARSE_ONE_PARAM(flag1, dest);
 230                 PARSE_ONE_PARAM(flag2, flag1);
 231                 PARSE_ONE_PARAM(action, flag2);
 232                 if ((p = strchr(action, '\t'))) *p = '\0';
 233         }
 234
 235         filter = g_new0(Filter, 1);
 236         filter->name1 = *name1 ? g_strdup(name1) : NULL;
 237         filter->body1 = *body1 ? g_strdup(body1) : NULL;
 238         filter->name2 = *name2 ? g_strdup(name2) : NULL;
 239         filter->body2 = *body2 ? g_strdup(body2) : NULL;
 240         filter->cond = (*op == '|') ? FLT_OR : FLT_AND;
 241         filter->dest = *dest ? g_strdup(dest) : NULL;
 242
 243         filter->flag1 = FLT_CONTAIN;
 244         filter->flag2 = FLT_CONTAIN;
 245         if (flag1) filter->flag1 = (FilterFlag)strtoul(flag1, NULL, 10);
 246         if (flag2) filter->flag2 = (FilterFlag)strtoul(flag2, NULL, 10);
 247
 248         if (!strcmp2(dest, FILTER_NOT_RECEIVE))
 249                 filter->action = FLT_NOTRECV;
 250         else
 251                 filter->action = FLT_MOVE;
 252         if (action) {
 253                 switch (*action) {
 254                 case 'm': filter->action = FLT_MOVE;    break;
 255                 case 'n': filter->action = FLT_NOTRECV; break;
 256                 case 'd': filter->action = FLT_DELETE;  break;
 257                 default:  g_warning("Invalid action: `%c'\n", *action);
 258                 }
 259         }
 260
 261         return filter;
 262 }
 263
 264 void filter_free(Filter *filter)
 265 {
 266         if (!filter) return;
 267
 268         g_free(filter->name1);
 269         g_free(filter->body1);
 270
 271         g_free(filter->name2);
 272         g_free(filter->body2);
 273
 274         g_free(filter->dest);
 275
 276         g_free(filter);
 277 }