[7d4fbcd] | 1 | #include <string.h> |
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| 2 | #include "owl.h" |
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| 3 | |
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[23fddad] | 4 | owl_filter *owl_filter_new_fromstring(const char *name, const char *string) |
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[e187445] | 5 | { |
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[23fddad] | 6 | owl_filter *f; |
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[7d4fbcd] | 7 | char **argv; |
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[23fddad] | 8 | int argc; |
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[7d4fbcd] | 9 | |
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[23fddad] | 10 | argv = owl_parseline(string, &argc); |
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| 11 | f = owl_filter_new(name, argc, strs(argv)); |
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[1716fed] | 12 | owl_parsefree(argv, argc); |
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[23fddad] | 13 | |
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| 14 | return f; |
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[7d4fbcd] | 15 | } |
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| 16 | |
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[23fddad] | 17 | owl_filter *owl_filter_new(const char *name, int argc, const char *const *argv) |
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[e187445] | 18 | { |
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[23fddad] | 19 | owl_filter *f; |
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| 20 | |
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| 21 | f = owl_malloc(sizeof(owl_filter)); |
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| 22 | |
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[7d4fbcd] | 23 | f->name=owl_strdup(name); |
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[8fa9562] | 24 | f->fgcolor=OWL_COLOR_DEFAULT; |
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| 25 | f->bgcolor=OWL_COLOR_DEFAULT; |
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[cb769bb] | 26 | |
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[7d4fbcd] | 27 | /* first take arguments that have to come first */ |
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| 28 | /* set the color */ |
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[8fa9562] | 29 | while ( argc>=2 && ( !strcmp(argv[0], "-c") || |
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| 30 | !strcmp(argv[0], "-b") ) ) { |
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[601733d] | 31 | if (owl_util_string_to_color(argv[1])==OWL_COLOR_INVALID) { |
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[12c35df] | 32 | owl_function_error("The color '%s' is not available, using default.", argv[1]); |
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| 33 | } else { |
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[8fa9562] | 34 | switch (argv[0][1]) { |
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| 35 | case 'c': |
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| 36 | f->fgcolor=owl_util_string_to_color(argv[1]); |
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| 37 | break; |
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| 38 | case 'b': |
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| 39 | f->bgcolor=owl_util_string_to_color(argv[1]); |
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| 40 | break; |
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| 41 | } |
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[12c35df] | 42 | } |
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[7d4fbcd] | 43 | argc-=2; |
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| 44 | argv+=2; |
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| 45 | } |
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| 46 | |
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[23fddad] | 47 | if (!(f->root = owl_filter_parse_expression(argc, argv, NULL))) { |
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| 48 | owl_filter_delete(f); |
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| 49 | return NULL; |
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| 50 | } |
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[7d4fbcd] | 51 | |
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[cb769bb] | 52 | /* Now check for recursion. */ |
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[40458b9] | 53 | if (owl_filter_is_toodeep(f)) { |
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[9711a6e] | 54 | owl_function_error("Filter loop!"); |
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[23fddad] | 55 | owl_filter_delete(f); |
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| 56 | return NULL; |
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[7d4fbcd] | 57 | } |
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[cb769bb] | 58 | |
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[23fddad] | 59 | return f; |
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[7d4fbcd] | 60 | } |
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| 61 | |
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[cb769bb] | 62 | |
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| 63 | /* A primitive expression is one without any toplevel ``and'' or ``or''s*/ |
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| 64 | |
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[e19eb97] | 65 | static owl_filterelement * owl_filter_parse_primitive_expression(int argc, const char *const *argv, int *next) |
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[cb769bb] | 66 | { |
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[ad15610] | 67 | owl_filterelement *fe, *op; |
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| 68 | int i = 0, skip; |
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[cb769bb] | 69 | |
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[ad15610] | 70 | if(!argc) return NULL; |
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[cb769bb] | 71 | |
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[ad15610] | 72 | fe = owl_malloc(sizeof(owl_filterelement)); |
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[cb769bb] | 73 | owl_filterelement_create(fe); |
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| 74 | |
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| 75 | if(!strcasecmp(argv[i], "(")) { |
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| 76 | i++; |
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| 77 | op = owl_filter_parse_expression(argc-i, argv+i, &skip); |
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| 78 | if(!op) goto err; |
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| 79 | i += skip; |
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[d791cdb] | 80 | if(i >= argc) goto err; |
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[cb769bb] | 81 | if(strcasecmp(argv[i++], ")")) goto err; |
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| 82 | owl_filterelement_create_group(fe, op); |
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| 83 | } else if(!strcasecmp(argv[i], "not")) { |
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| 84 | i++; |
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| 85 | op = owl_filter_parse_primitive_expression(argc-i, argv+i, &skip); |
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| 86 | if(!op) goto err; |
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| 87 | i += skip; |
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| 88 | owl_filterelement_create_not(fe, op); |
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| 89 | } else if(!strcasecmp(argv[i], "true")) { |
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| 90 | i++; |
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| 91 | owl_filterelement_create_true(fe); |
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| 92 | } else if(!strcasecmp(argv[i], "false")) { |
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| 93 | i++; |
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| 94 | owl_filterelement_create_false(fe); |
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| 95 | } else { |
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| 96 | if(argc == 1) goto err; |
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| 97 | if(!strcasecmp(*argv, "filter")) { |
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| 98 | owl_filterelement_create_filter(fe, *(argv+1)); |
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| 99 | } else if(!strcasecmp(*argv, "perl")) { |
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| 100 | owl_filterelement_create_perl(fe, *(argv+1)); |
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| 101 | } else { |
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[e6a4dd5] | 102 | if(owl_filterelement_create_re(fe, *argv, *(argv+1))) { |
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| 103 | goto err; |
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| 104 | } |
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[cb769bb] | 105 | } |
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| 106 | i += 2; |
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| 107 | } |
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| 108 | |
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| 109 | if(next) { |
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| 110 | *next = i; |
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| 111 | } else if(i != argc) { |
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| 112 | goto err; |
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| 113 | } |
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| 114 | return fe; |
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| 115 | err: |
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| 116 | owl_filterelement_free(fe); |
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| 117 | owl_free(fe); |
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| 118 | return NULL; |
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| 119 | } |
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| 120 | |
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[e19eb97] | 121 | owl_filterelement * owl_filter_parse_expression(int argc, const char *const *argv, int *next) |
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[cb769bb] | 122 | { |
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| 123 | int i = 0, skip; |
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[ad15610] | 124 | owl_filterelement * op1 = NULL, * op2 = NULL, *tmp; |
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[cb769bb] | 125 | |
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| 126 | op1 = owl_filter_parse_primitive_expression(argc-i, argv+i, &skip); |
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| 127 | i += skip; |
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| 128 | if(!op1) goto err; |
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| 129 | |
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| 130 | while(i < argc) { |
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| 131 | if(strcasecmp(argv[i], "and") && |
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| 132 | strcasecmp(argv[i], "or")) break; |
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| 133 | op2 = owl_filter_parse_primitive_expression(argc-i-1, argv+i+1, &skip); |
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| 134 | if(!op2) goto err; |
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[ad15610] | 135 | tmp = owl_malloc(sizeof(owl_filterelement)); |
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[cb769bb] | 136 | if(!strcasecmp(argv[i], "and")) { |
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| 137 | owl_filterelement_create_and(tmp, op1, op2); |
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| 138 | } else { |
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| 139 | owl_filterelement_create_or(tmp, op1, op2); |
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| 140 | } |
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| 141 | op1 = tmp; |
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| 142 | op2 = NULL; |
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| 143 | i += skip+1; |
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| 144 | } |
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| 145 | |
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| 146 | if(next) { |
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| 147 | *next = i; |
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| 148 | } else if(i != argc) { |
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| 149 | goto err; |
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| 150 | } |
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| 151 | return op1; |
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| 152 | err: |
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| 153 | if(op1) { |
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| 154 | owl_filterelement_free(op1); |
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| 155 | owl_free(op1); |
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| 156 | } |
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| 157 | return NULL; |
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| 158 | } |
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| 159 | |
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[4542047] | 160 | const char *owl_filter_get_name(const owl_filter *f) |
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[e187445] | 161 | { |
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[7d4fbcd] | 162 | return(f->name); |
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| 163 | } |
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| 164 | |
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[3cc4bfc] | 165 | SV *owl_filter_to_sv(const owl_filter *f) |
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| 166 | { |
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| 167 | return owl_new_sv(owl_filter_get_name(f)); |
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| 168 | } |
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| 169 | |
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[8fa9562] | 170 | void owl_filter_set_fgcolor(owl_filter *f, int color) |
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[e187445] | 171 | { |
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[8fa9562] | 172 | f->fgcolor=color; |
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[7d4fbcd] | 173 | } |
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| 174 | |
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[4542047] | 175 | int owl_filter_get_fgcolor(const owl_filter *f) |
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[e187445] | 176 | { |
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[8fa9562] | 177 | return(f->fgcolor); |
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| 178 | } |
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| 179 | |
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| 180 | void owl_filter_set_bgcolor(owl_filter *f, int color) |
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| 181 | { |
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| 182 | f->bgcolor=color; |
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| 183 | } |
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| 184 | |
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[4542047] | 185 | int owl_filter_get_bgcolor(const owl_filter *f) |
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[8fa9562] | 186 | { |
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| 187 | return(f->bgcolor); |
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[7d4fbcd] | 188 | } |
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| 189 | |
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[15b34fd] | 190 | /* return 1 if the message matches the given filter, otherwise |
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| 191 | * return 0. |
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| 192 | */ |
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[4542047] | 193 | int owl_filter_message_match(const owl_filter *f, const owl_message *m) |
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[e187445] | 194 | { |
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[ad15610] | 195 | int ret; |
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[cb769bb] | 196 | if(!f->root) return 0; |
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[ad15610] | 197 | ret = owl_filterelement_match(f->root, m); |
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[cb769bb] | 198 | return ret; |
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[7d4fbcd] | 199 | } |
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| 200 | |
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| 201 | |
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[4542047] | 202 | char* owl_filter_print(const owl_filter *f) |
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[e187445] | 203 | { |
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[cdc6ff1] | 204 | GString *out = g_string_new(""); |
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[446aa2b] | 205 | |
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[8fa9562] | 206 | if (f->fgcolor!=OWL_COLOR_DEFAULT) { |
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[0504f63] | 207 | g_string_append(out, "-c "); |
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[c2c5c77] | 208 | if (f->fgcolor < 8) { |
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[0504f63] | 209 | g_string_append(out, owl_util_color_to_string(f->fgcolor)); |
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[c2c5c77] | 210 | } |
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| 211 | else { |
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[0504f63] | 212 | g_string_append_printf(out, "%i",f->fgcolor); |
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[c2c5c77] | 213 | } |
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[0504f63] | 214 | g_string_append(out, " "); |
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[8fa9562] | 215 | } |
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| 216 | if (f->bgcolor!=OWL_COLOR_DEFAULT) { |
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[0504f63] | 217 | g_string_append(out, "-b "); |
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[c2c5c77] | 218 | if (f->bgcolor < 8) { |
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[0504f63] | 219 | g_string_append(out, owl_util_color_to_string(f->bgcolor)); |
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[c2c5c77] | 220 | } |
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| 221 | else { |
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[0504f63] | 222 | g_string_append_printf(out, "%i",f->fgcolor); |
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[c2c5c77] | 223 | } |
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[0504f63] | 224 | g_string_append(out, " "); |
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| 225 | } |
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| 226 | if(f->root) { |
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| 227 | owl_filterelement_print(f->root, out); |
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| 228 | g_string_append(out, "\n"); |
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[446aa2b] | 229 | } |
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[0504f63] | 230 | |
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| 231 | return g_string_free(out, 0); |
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[7d4fbcd] | 232 | } |
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| 233 | |
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[40458b9] | 234 | /* Return 1 if the filters 'a' and 'b' are equivalent, 0 otherwise */ |
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[4542047] | 235 | int owl_filter_equiv(const owl_filter *a, const owl_filter *b) |
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[e187445] | 236 | { |
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[0504f63] | 237 | char *buffa, *buffb; |
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| 238 | int ret; |
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[7d4fbcd] | 239 | |
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[0504f63] | 240 | buffa = owl_filter_print(a); |
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| 241 | buffb = owl_filter_print(b); |
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[7d4fbcd] | 242 | |
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[0504f63] | 243 | ret = !strcmp(buffa, buffb); |
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[cdc6ff1] | 244 | ret = ret && !strcmp(owl_filter_get_name(a), |
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| 245 | owl_filter_get_name(b)); |
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[0504f63] | 246 | |
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| 247 | owl_free(buffa); |
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| 248 | owl_free(buffb); |
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| 249 | |
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| 250 | return ret; |
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[7d4fbcd] | 251 | } |
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| 252 | |
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[cb769bb] | 253 | |
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[4542047] | 254 | int owl_filter_is_toodeep(const owl_filter *f) |
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[40458b9] | 255 | { |
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[cb769bb] | 256 | return owl_filterelement_is_toodeep(f, f->root); |
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[40458b9] | 257 | } |
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| 258 | |
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[23fddad] | 259 | void owl_filter_delete(owl_filter *f) |
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[40458b9] | 260 | { |
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[23fddad] | 261 | if (f == NULL) |
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| 262 | return; |
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| 263 | if (f->root) { |
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[cb769bb] | 264 | owl_filterelement_free(f->root); |
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| 265 | owl_free(f->root); |
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[40458b9] | 266 | } |
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[23fddad] | 267 | if (f->name) |
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| 268 | owl_free(f->name); |
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| 269 | owl_free(f); |
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[cb769bb] | 270 | } |
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