1 | /* Copyright (c) 2002,2003,2004,2009 James M. Kretchmar |
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2 | * |
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3 | * This file is part of Owl. |
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4 | * |
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5 | * Owl is free software: you can redistribute it and/or modify |
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6 | * it under the terms of the GNU General Public License as published by |
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7 | * the Free Software Foundation, either version 3 of the License, or |
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8 | * (at your option) any later version. |
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9 | * |
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10 | * Owl is distributed in the hope that it will be useful, |
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | * GNU General Public License for more details. |
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14 | * |
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15 | * You should have received a copy of the GNU General Public License |
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16 | * along with Owl. If not, see <http://www.gnu.org/licenses/>. |
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17 | * |
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18 | * --------------------------------------------------------------- |
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19 | * |
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20 | * As of Owl version 2.1.12 there are patches contributed by |
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21 | * developers of the branched BarnOwl project, Copyright (c) |
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22 | * 2006-2009 The BarnOwl Developers. All rights reserved. |
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23 | */ |
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24 | |
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25 | #include "owl.h" |
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26 | |
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27 | static const char fileIdent[] = "$Id$"; |
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28 | |
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29 | #define OWL_FILTERELEMENT_NULL 0 |
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30 | #define OWL_FILTERELEMENT_TRUE 1 |
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31 | #define OWL_FILTERELEMENT_FALSE 2 |
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32 | #define OWL_FILTERELEMENT_OPENBRACE 3 |
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33 | #define OWL_FILTERELEMENT_CLOSEBRACE 4 |
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34 | #define OWL_FILTERELEMENT_AND 5 |
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35 | #define OWL_FILTERELEMENT_OR 6 |
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36 | #define OWL_FILTERELEMENT_NOT 7 |
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37 | #define OWL_FILTERELEMENT_RE 8 |
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38 | #define OWL_FILTERELEMENT_FILTER 9 |
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39 | #define OWL_FILTERELEMENT_PERL 10 |
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40 | |
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41 | void owl_filterelement_create_null(owl_filterelement *fe) |
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42 | { |
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43 | fe->type=OWL_FILTERELEMENT_NULL; |
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44 | fe->field=NULL; |
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45 | fe->filtername=NULL; |
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46 | } |
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47 | |
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48 | void owl_filterelement_create_openbrace(owl_filterelement *fe) |
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49 | { |
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50 | owl_filterelement_create_null(fe); |
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51 | fe->type=OWL_FILTERELEMENT_OPENBRACE; |
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52 | } |
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53 | |
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54 | void owl_filterelement_create_closebrace(owl_filterelement *fe) |
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55 | { |
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56 | owl_filterelement_create_null(fe); |
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57 | fe->type=OWL_FILTERELEMENT_CLOSEBRACE; |
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58 | } |
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59 | |
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60 | void owl_filterelement_create_and(owl_filterelement *fe) |
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61 | { |
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62 | owl_filterelement_create_null(fe); |
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63 | fe->type=OWL_FILTERELEMENT_AND; |
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64 | } |
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65 | |
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66 | void owl_filterelement_create_or(owl_filterelement *fe) |
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67 | { |
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68 | owl_filterelement_create_null(fe); |
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69 | fe->type=OWL_FILTERELEMENT_OR; |
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70 | } |
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71 | |
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72 | void owl_filterelement_create_not(owl_filterelement *fe) |
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73 | { |
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74 | owl_filterelement_create_null(fe); |
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75 | fe->type=OWL_FILTERELEMENT_NOT; |
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76 | } |
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77 | |
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78 | void owl_filterelement_create_true(owl_filterelement *fe) |
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79 | { |
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80 | owl_filterelement_create_null(fe); |
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81 | fe->type=OWL_FILTERELEMENT_TRUE; |
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82 | } |
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83 | |
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84 | void owl_filterelement_create_false(owl_filterelement *fe) |
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85 | { |
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86 | owl_filterelement_create_null(fe); |
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87 | fe->type=OWL_FILTERELEMENT_FALSE; |
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88 | } |
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89 | |
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90 | void owl_filterelement_create_re(owl_filterelement *fe, char *field, char *re) |
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91 | { |
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92 | owl_filterelement_create_null(fe); |
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93 | fe->type=OWL_FILTERELEMENT_RE; |
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94 | fe->field=owl_strdup(field); |
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95 | owl_regex_create(&(fe->re), re); |
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96 | } |
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97 | |
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98 | void owl_filterelement_create_filter(owl_filterelement *fe, char *name) |
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99 | { |
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100 | owl_filterelement_create_null(fe); |
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101 | fe->type=OWL_FILTERELEMENT_FILTER; |
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102 | fe->filtername=owl_strdup(name); |
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103 | } |
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104 | |
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105 | void owl_filterelement_create_perl(owl_filterelement *fe, char *name) |
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106 | { |
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107 | owl_filterelement_create_null(fe); |
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108 | fe->type=OWL_FILTERELEMENT_PERL; |
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109 | fe->filtername=owl_strdup(name); |
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110 | } |
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111 | |
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112 | void owl_filterelement_free(owl_filterelement *fe) |
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113 | { |
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114 | if (fe->field) owl_free(fe->field); |
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115 | if (fe->filtername) owl_free(fe->filtername); |
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116 | } |
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117 | |
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118 | int owl_filterelement_is_null(owl_filterelement *fe) |
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119 | { |
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120 | if (fe->type==OWL_FILTERELEMENT_NULL) return(1); |
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121 | return(0); |
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122 | } |
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123 | |
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124 | int owl_filterelement_is_openbrace(owl_filterelement *fe) |
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125 | { |
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126 | if (fe->type==OWL_FILTERELEMENT_OPENBRACE) return(1); |
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127 | return(0); |
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128 | } |
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129 | |
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130 | int owl_filterelement_is_closebrace(owl_filterelement *fe) |
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131 | { |
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132 | if (fe->type==OWL_FILTERELEMENT_CLOSEBRACE) return(1); |
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133 | return(0); |
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134 | } |
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135 | |
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136 | int owl_filterelement_is_and(owl_filterelement *fe) |
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137 | { |
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138 | if (fe->type==OWL_FILTERELEMENT_AND) return(1); |
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139 | return(0); |
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140 | } |
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141 | |
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142 | int owl_filterelement_is_or(owl_filterelement *fe) |
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143 | { |
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144 | if (fe->type==OWL_FILTERELEMENT_OR) return(1); |
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145 | return(0); |
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146 | } |
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147 | |
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148 | int owl_filterelement_is_not(owl_filterelement *fe) |
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149 | { |
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150 | if (fe->type==OWL_FILTERELEMENT_NOT) return(1); |
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151 | return(0); |
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152 | } |
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153 | |
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154 | int owl_filterelement_is_true(owl_filterelement *fe) |
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155 | { |
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156 | if (fe->type==OWL_FILTERELEMENT_TRUE) return(1); |
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157 | return(0); |
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158 | } |
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159 | |
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160 | int owl_filterelement_is_false(owl_filterelement *fe) |
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161 | { |
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162 | if (fe->type==OWL_FILTERELEMENT_FALSE) return(1); |
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163 | return(0); |
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164 | } |
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165 | |
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166 | int owl_filterelement_is_re(owl_filterelement *fe) |
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167 | { |
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168 | if (fe->type==OWL_FILTERELEMENT_RE) return(1); |
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169 | return(0); |
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170 | } |
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171 | |
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172 | int owl_filterelement_is_perl(owl_filterelement *fe) |
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173 | { |
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174 | if (fe->type==OWL_FILTERELEMENT_PERL) return(1); |
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175 | return(0); |
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176 | } |
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177 | |
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178 | owl_regex *owl_filterelement_get_re(owl_filterelement *fe) |
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179 | { |
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180 | return(&(fe->re)); |
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181 | } |
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182 | |
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183 | int owl_filterelement_is_filter(owl_filterelement *fe) |
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184 | { |
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185 | if (fe->type==OWL_FILTERELEMENT_FILTER) return(1); |
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186 | return(0); |
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187 | } |
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188 | |
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189 | char *owl_filterelement_get_field(owl_filterelement *fe) |
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190 | { |
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191 | if (fe->field) return(fe->field); |
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192 | return("unknown-field"); |
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193 | } |
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194 | |
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195 | char *owl_filterelement_get_filtername(owl_filterelement *fe) |
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196 | { |
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197 | if (fe->filtername) return(fe->filtername); |
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198 | return("unknown-filter"); |
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199 | } |
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200 | |
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201 | int owl_filterelement_is_value(owl_filterelement *fe) |
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202 | { |
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203 | if ( (fe->type==OWL_FILTERELEMENT_TRUE) || |
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204 | (fe->type==OWL_FILTERELEMENT_FALSE) || |
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205 | (fe->type==OWL_FILTERELEMENT_RE) || |
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206 | (fe->type==OWL_FILTERELEMENT_PERL) || |
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207 | (fe->type==OWL_FILTERELEMENT_FILTER)) { |
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208 | return(1); |
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209 | } |
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210 | return(0); |
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211 | } |
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212 | |
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213 | /* caller must free the return */ |
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214 | char *owl_filterelement_to_string(owl_filterelement *fe) |
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215 | { |
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216 | if (owl_filterelement_is_openbrace(fe)) { |
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217 | return(owl_strdup("( ")); |
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218 | } else if (owl_filterelement_is_closebrace(fe)) { |
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219 | return(owl_strdup(") ")); |
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220 | } else if (owl_filterelement_is_and(fe)) { |
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221 | return(owl_strdup("and ")); |
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222 | } else if (owl_filterelement_is_or(fe)) { |
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223 | return(owl_strdup("or ")); |
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224 | } else if (owl_filterelement_is_not(fe)) { |
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225 | return(owl_strdup("not ")); |
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226 | } else if (owl_filterelement_is_true(fe)) { |
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227 | return(owl_strdup("true ")); |
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228 | } else if (owl_filterelement_is_false(fe)) { |
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229 | return(owl_strdup("false ")); |
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230 | } else if (owl_filterelement_is_re(fe)) { |
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231 | return(owl_sprintf("%s %s ", fe->field, owl_regex_get_string(&(fe->re)))); |
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232 | } else if (owl_filterelement_is_filter(fe)) { |
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233 | return(owl_sprintf("filter %s ", fe->filtername)); |
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234 | } else if (owl_filterelement_is_perl(fe)) { |
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235 | return(owl_sprintf("perl %s ", fe->filtername)); |
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236 | } |
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237 | |
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238 | return(owl_strdup("?")); |
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239 | } |
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