[7d4fbcd] | 1 | #include <string.h> |
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| 2 | #include "owl.h" |
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| 3 | |
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[e19eb97] | 4 | int owl_filter_init_fromstring(owl_filter *f, const char *name, const char *string) |
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[e187445] | 5 | { |
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[7d4fbcd] | 6 | char **argv; |
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| 7 | int argc, out; |
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| 8 | |
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| 9 | argv=owl_parseline(string, &argc); |
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[c529ac8] | 10 | out=owl_filter_init(f, name, argc, strs(argv)); |
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[1716fed] | 11 | owl_parsefree(argv, argc); |
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[7d4fbcd] | 12 | return(out); |
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| 13 | } |
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| 14 | |
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[e19eb97] | 15 | int owl_filter_init(owl_filter *f, const char *name, int argc, const char *const *argv) |
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[e187445] | 16 | { |
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[7d4fbcd] | 17 | f->name=owl_strdup(name); |
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[8fa9562] | 18 | f->fgcolor=OWL_COLOR_DEFAULT; |
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| 19 | f->bgcolor=OWL_COLOR_DEFAULT; |
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[59cf91c] | 20 | f->cachedmsgid=-1; |
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[cb769bb] | 21 | |
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[7d4fbcd] | 22 | /* first take arguments that have to come first */ |
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| 23 | /* set the color */ |
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[8fa9562] | 24 | while ( argc>=2 && ( !strcmp(argv[0], "-c") || |
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| 25 | !strcmp(argv[0], "-b") ) ) { |
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[601733d] | 26 | if (owl_util_string_to_color(argv[1])==OWL_COLOR_INVALID) { |
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[12c35df] | 27 | owl_function_error("The color '%s' is not available, using default.", argv[1]); |
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| 28 | } else { |
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[8fa9562] | 29 | switch (argv[0][1]) { |
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| 30 | case 'c': |
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| 31 | f->fgcolor=owl_util_string_to_color(argv[1]); |
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| 32 | break; |
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| 33 | case 'b': |
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| 34 | f->bgcolor=owl_util_string_to_color(argv[1]); |
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| 35 | break; |
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| 36 | } |
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[12c35df] | 37 | } |
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[7d4fbcd] | 38 | argc-=2; |
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| 39 | argv+=2; |
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| 40 | } |
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| 41 | |
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[cb769bb] | 42 | if(!(f->root = owl_filter_parse_expression(argc, argv, NULL))) |
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| 43 | return(-1); |
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[7d4fbcd] | 44 | |
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[cb769bb] | 45 | /* Now check for recursion. */ |
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[40458b9] | 46 | if (owl_filter_is_toodeep(f)) { |
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[9711a6e] | 47 | owl_function_error("Filter loop!"); |
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[40458b9] | 48 | owl_filter_free(f); |
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| 49 | return(-1); |
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[7d4fbcd] | 50 | } |
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[cb769bb] | 51 | |
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[7d4fbcd] | 52 | return(0); |
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| 53 | } |
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| 54 | |
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[cb769bb] | 55 | |
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| 56 | /* A primitive expression is one without any toplevel ``and'' or ``or''s*/ |
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| 57 | |
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[e19eb97] | 58 | static owl_filterelement * owl_filter_parse_primitive_expression(int argc, const char *const *argv, int *next) |
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[cb769bb] | 59 | { |
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[ad15610] | 60 | owl_filterelement *fe, *op; |
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| 61 | int i = 0, skip; |
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[cb769bb] | 62 | |
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[ad15610] | 63 | if(!argc) return NULL; |
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[cb769bb] | 64 | |
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[ad15610] | 65 | fe = owl_malloc(sizeof(owl_filterelement)); |
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[cb769bb] | 66 | owl_filterelement_create(fe); |
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| 67 | |
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| 68 | if(!strcasecmp(argv[i], "(")) { |
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| 69 | i++; |
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| 70 | op = owl_filter_parse_expression(argc-i, argv+i, &skip); |
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| 71 | if(!op) goto err; |
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| 72 | i += skip; |
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[d791cdb] | 73 | if(i >= argc) goto err; |
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[cb769bb] | 74 | if(strcasecmp(argv[i++], ")")) goto err; |
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| 75 | owl_filterelement_create_group(fe, op); |
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| 76 | } else if(!strcasecmp(argv[i], "not")) { |
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| 77 | i++; |
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| 78 | op = owl_filter_parse_primitive_expression(argc-i, argv+i, &skip); |
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| 79 | if(!op) goto err; |
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| 80 | i += skip; |
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| 81 | owl_filterelement_create_not(fe, op); |
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| 82 | } else if(!strcasecmp(argv[i], "true")) { |
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| 83 | i++; |
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| 84 | owl_filterelement_create_true(fe); |
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| 85 | } else if(!strcasecmp(argv[i], "false")) { |
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| 86 | i++; |
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| 87 | owl_filterelement_create_false(fe); |
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| 88 | } else { |
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| 89 | if(argc == 1) goto err; |
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| 90 | if(!strcasecmp(*argv, "filter")) { |
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| 91 | owl_filterelement_create_filter(fe, *(argv+1)); |
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| 92 | } else if(!strcasecmp(*argv, "perl")) { |
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| 93 | owl_filterelement_create_perl(fe, *(argv+1)); |
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| 94 | } else { |
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[e6a4dd5] | 95 | if(owl_filterelement_create_re(fe, *argv, *(argv+1))) { |
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| 96 | goto err; |
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| 97 | } |
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[cb769bb] | 98 | } |
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| 99 | i += 2; |
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| 100 | } |
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| 101 | |
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| 102 | if(next) { |
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| 103 | *next = i; |
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| 104 | } else if(i != argc) { |
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| 105 | goto err; |
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| 106 | } |
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| 107 | return fe; |
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| 108 | err: |
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| 109 | owl_filterelement_free(fe); |
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| 110 | owl_free(fe); |
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| 111 | return NULL; |
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| 112 | } |
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| 113 | |
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[e19eb97] | 114 | owl_filterelement * owl_filter_parse_expression(int argc, const char *const *argv, int *next) |
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[cb769bb] | 115 | { |
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| 116 | int i = 0, skip; |
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[ad15610] | 117 | owl_filterelement * op1 = NULL, * op2 = NULL, *tmp; |
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[cb769bb] | 118 | |
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| 119 | op1 = owl_filter_parse_primitive_expression(argc-i, argv+i, &skip); |
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| 120 | i += skip; |
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| 121 | if(!op1) goto err; |
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| 122 | |
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| 123 | while(i < argc) { |
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| 124 | if(strcasecmp(argv[i], "and") && |
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| 125 | strcasecmp(argv[i], "or")) break; |
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| 126 | op2 = owl_filter_parse_primitive_expression(argc-i-1, argv+i+1, &skip); |
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| 127 | if(!op2) goto err; |
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[ad15610] | 128 | tmp = owl_malloc(sizeof(owl_filterelement)); |
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[cb769bb] | 129 | if(!strcasecmp(argv[i], "and")) { |
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| 130 | owl_filterelement_create_and(tmp, op1, op2); |
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| 131 | } else { |
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| 132 | owl_filterelement_create_or(tmp, op1, op2); |
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| 133 | } |
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| 134 | op1 = tmp; |
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| 135 | op2 = NULL; |
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| 136 | i += skip+1; |
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| 137 | } |
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| 138 | |
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| 139 | if(next) { |
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| 140 | *next = i; |
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| 141 | } else if(i != argc) { |
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| 142 | goto err; |
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| 143 | } |
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| 144 | return op1; |
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| 145 | err: |
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| 146 | if(op1) { |
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| 147 | owl_filterelement_free(op1); |
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| 148 | owl_free(op1); |
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| 149 | } |
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| 150 | return NULL; |
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| 151 | } |
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| 152 | |
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[4542047] | 153 | const char *owl_filter_get_name(const owl_filter *f) |
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[e187445] | 154 | { |
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[7d4fbcd] | 155 | return(f->name); |
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| 156 | } |
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| 157 | |
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[8fa9562] | 158 | void owl_filter_set_fgcolor(owl_filter *f, int color) |
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[e187445] | 159 | { |
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[8fa9562] | 160 | f->fgcolor=color; |
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[7d4fbcd] | 161 | } |
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| 162 | |
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[4542047] | 163 | int owl_filter_get_fgcolor(const owl_filter *f) |
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[e187445] | 164 | { |
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[8fa9562] | 165 | return(f->fgcolor); |
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| 166 | } |
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| 167 | |
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| 168 | void owl_filter_set_bgcolor(owl_filter *f, int color) |
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| 169 | { |
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| 170 | f->bgcolor=color; |
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| 171 | } |
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| 172 | |
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[4542047] | 173 | int owl_filter_get_bgcolor(const owl_filter *f) |
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[8fa9562] | 174 | { |
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| 175 | return(f->bgcolor); |
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[7d4fbcd] | 176 | } |
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| 177 | |
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[e187445] | 178 | void owl_filter_set_cachedmsgid(owl_filter *f, int cachedmsgid) |
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| 179 | { |
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[59cf91c] | 180 | f->cachedmsgid=cachedmsgid; |
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| 181 | } |
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| 182 | |
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[4542047] | 183 | int owl_filter_get_cachedmsgid(const owl_filter *f) |
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[e187445] | 184 | { |
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[59cf91c] | 185 | return(f->cachedmsgid); |
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| 186 | } |
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| 187 | |
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[15b34fd] | 188 | /* return 1 if the message matches the given filter, otherwise |
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| 189 | * return 0. |
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| 190 | */ |
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[4542047] | 191 | int owl_filter_message_match(const owl_filter *f, const owl_message *m) |
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[e187445] | 192 | { |
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[ad15610] | 193 | int ret; |
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[cb769bb] | 194 | if(!f->root) return 0; |
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[ad15610] | 195 | ret = owl_filterelement_match(f->root, m); |
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[cb769bb] | 196 | return ret; |
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[7d4fbcd] | 197 | } |
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| 198 | |
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| 199 | |
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[4542047] | 200 | char* owl_filter_print(const owl_filter *f) |
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[e187445] | 201 | { |
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[cdc6ff1] | 202 | GString *out = g_string_new(""); |
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[446aa2b] | 203 | |
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[8fa9562] | 204 | if (f->fgcolor!=OWL_COLOR_DEFAULT) { |
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[0504f63] | 205 | g_string_append(out, "-c "); |
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[c2c5c77] | 206 | if (f->fgcolor < 8) { |
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[0504f63] | 207 | g_string_append(out, owl_util_color_to_string(f->fgcolor)); |
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[c2c5c77] | 208 | } |
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| 209 | else { |
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[0504f63] | 210 | g_string_append_printf(out, "%i",f->fgcolor); |
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[c2c5c77] | 211 | } |
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[0504f63] | 212 | g_string_append(out, " "); |
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[8fa9562] | 213 | } |
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| 214 | if (f->bgcolor!=OWL_COLOR_DEFAULT) { |
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[0504f63] | 215 | g_string_append(out, "-b "); |
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[c2c5c77] | 216 | if (f->bgcolor < 8) { |
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[0504f63] | 217 | g_string_append(out, owl_util_color_to_string(f->bgcolor)); |
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[c2c5c77] | 218 | } |
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| 219 | else { |
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[0504f63] | 220 | g_string_append_printf(out, "%i",f->fgcolor); |
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[c2c5c77] | 221 | } |
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[0504f63] | 222 | g_string_append(out, " "); |
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| 223 | } |
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| 224 | if(f->root) { |
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| 225 | owl_filterelement_print(f->root, out); |
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| 226 | g_string_append(out, "\n"); |
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[446aa2b] | 227 | } |
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[0504f63] | 228 | |
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| 229 | return g_string_free(out, 0); |
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[7d4fbcd] | 230 | } |
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| 231 | |
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[40458b9] | 232 | /* Return 1 if the filters 'a' and 'b' are equivalent, 0 otherwise */ |
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[4542047] | 233 | int owl_filter_equiv(const owl_filter *a, const owl_filter *b) |
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[e187445] | 234 | { |
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[0504f63] | 235 | char *buffa, *buffb; |
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| 236 | int ret; |
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[7d4fbcd] | 237 | |
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[0504f63] | 238 | buffa = owl_filter_print(a); |
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| 239 | buffb = owl_filter_print(b); |
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[7d4fbcd] | 240 | |
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[0504f63] | 241 | ret = !strcmp(buffa, buffb); |
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[cdc6ff1] | 242 | ret = ret && !strcmp(owl_filter_get_name(a), |
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| 243 | owl_filter_get_name(b)); |
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[0504f63] | 244 | |
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| 245 | owl_free(buffa); |
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| 246 | owl_free(buffb); |
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| 247 | |
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| 248 | return ret; |
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[7d4fbcd] | 249 | } |
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| 250 | |
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[cb769bb] | 251 | |
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[4542047] | 252 | int owl_filter_is_toodeep(const owl_filter *f) |
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[40458b9] | 253 | { |
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[cb769bb] | 254 | return owl_filterelement_is_toodeep(f, f->root); |
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[40458b9] | 255 | } |
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| 256 | |
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[cb769bb] | 257 | void owl_filter_free(owl_filter *f) |
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[40458b9] | 258 | { |
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[cb769bb] | 259 | if(f->root) { |
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| 260 | owl_filterelement_free(f->root); |
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| 261 | owl_free(f->root); |
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[40458b9] | 262 | } |
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[cb769bb] | 263 | if (f->name) owl_free(f->name); |
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| 264 | } |
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[40458b9] | 265 | |
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[cb769bb] | 266 | /**************************************************************************/ |
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| 267 | /************************* REGRESSION TESTS *******************************/ |
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| 268 | /**************************************************************************/ |
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[40458b9] | 269 | |
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[cb769bb] | 270 | #ifdef OWL_INCLUDE_REG_TESTS |
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[40458b9] | 271 | |
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[c08c70a] | 272 | int owl_filter_test_string(const char * filt, const owl_message *m, int shouldmatch) /* noproto */ { |
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[cb769bb] | 273 | owl_filter f; |
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| 274 | int ok; |
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| 275 | int failed = 0; |
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| 276 | if(owl_filter_init_fromstring(&f, "test-filter", filt)) { |
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[535d68b] | 277 | printf("not ok can't parse %s\n", filt); |
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[cb769bb] | 278 | failed = 1; |
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| 279 | goto out; |
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| 280 | } |
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| 281 | ok = owl_filter_message_match(&f, m); |
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| 282 | if((shouldmatch && !ok) || (!shouldmatch && ok)) { |
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[535d68b] | 283 | printf("not ok match %s (got %d, expected %d)\n", filt, ok, shouldmatch); |
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[cb769bb] | 284 | failed = 1; |
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| 285 | } |
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| 286 | out: |
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| 287 | owl_filter_free(&f); |
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| 288 | if(!failed) { |
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[535d68b] | 289 | printf("ok %s %s\n", shouldmatch ? "matches" : "doesn't match", filt); |
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[cb769bb] | 290 | } |
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| 291 | return failed; |
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| 292 | } |
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[40458b9] | 293 | |
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| 294 | |
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[cb769bb] | 295 | #include "test.h" |
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[40458b9] | 296 | |
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| 297 | |
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[cb769bb] | 298 | int owl_filter_regtest(void) { |
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| 299 | int numfailed=0; |
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| 300 | owl_message m; |
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[9711a6e] | 301 | owl_filter f1, f2, f3, f4, f5; |
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[ad15610] | 302 | |
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| 303 | owl_list_create(&(g.filterlist)); |
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[cb769bb] | 304 | owl_message_init(&m); |
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| 305 | owl_message_set_type_zephyr(&m); |
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| 306 | owl_message_set_direction_in(&m); |
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| 307 | owl_message_set_class(&m, "owl"); |
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| 308 | owl_message_set_instance(&m, "tester"); |
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| 309 | owl_message_set_sender(&m, "owl-user"); |
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| 310 | owl_message_set_recipient(&m, "joe"); |
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| 311 | owl_message_set_attribute(&m, "foo", "bar"); |
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[40458b9] | 312 | |
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[cb769bb] | 313 | #define TEST_FILTER(f, e) numfailed += owl_filter_test_string(f, &m, e) |
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[40458b9] | 314 | |
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[7d4fbcd] | 315 | |
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[cb769bb] | 316 | TEST_FILTER("true", 1); |
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| 317 | TEST_FILTER("false", 0); |
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| 318 | TEST_FILTER("( true )", 1); |
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| 319 | TEST_FILTER("not false", 1); |
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| 320 | TEST_FILTER("( true ) or ( false )", 1); |
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| 321 | TEST_FILTER("true and false", 0); |
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| 322 | TEST_FILTER("( true or true ) or ( ( false ) )", 1); |
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| 323 | |
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| 324 | TEST_FILTER("class owl", 1); |
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| 325 | TEST_FILTER("class ^owl$", 1); |
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| 326 | TEST_FILTER("instance test", 1); |
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| 327 | TEST_FILTER("instance ^test$", 0); |
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| 328 | TEST_FILTER("instance ^tester$", 1); |
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| 329 | |
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| 330 | TEST_FILTER("foo bar", 1); |
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| 331 | TEST_FILTER("class owl and instance tester", 1); |
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| 332 | TEST_FILTER("type ^zephyr$ and direction ^in$ and ( class ^owl$ or instance ^owl$ )", 1); |
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| 333 | |
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[af1920fd] | 334 | /* Order of operations and precedence */ |
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[cb769bb] | 335 | TEST_FILTER("not true or false", 0); |
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| 336 | TEST_FILTER("true or true and false", 0); |
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| 337 | TEST_FILTER("true and true and false or true", 1); |
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| 338 | TEST_FILTER("false and false or true", 1); |
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| 339 | TEST_FILTER("true and false or false", 0); |
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| 340 | |
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| 341 | owl_filter_init_fromstring(&f1, "f1", "class owl"); |
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| 342 | owl_global_add_filter(&g, &f1); |
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| 343 | TEST_FILTER("filter f1", 1); |
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| 344 | |
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[af1920fd] | 345 | /* Test recursion prevention */ |
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[cb769bb] | 346 | FAIL_UNLESS("self reference", owl_filter_init_fromstring(&f2, "test", "filter test")); |
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| 347 | |
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[af1920fd] | 348 | /* mutual recursion */ |
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[cb769bb] | 349 | owl_filter_init_fromstring(&f3, "f3", "filter f4"); |
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| 350 | owl_global_add_filter(&g, &f3); |
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| 351 | FAIL_UNLESS("mutual recursion", owl_filter_init_fromstring(&f4, "f4", "filter f3")); |
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| 352 | |
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[9711a6e] | 353 | /* support referencing a filter several times */ |
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| 354 | FAIL_UNLESS("DAG", !owl_filter_init_fromstring(&f5, "dag", "filter f1 or filter f1")); |
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| 355 | |
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[cb769bb] | 356 | return 0; |
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[7d4fbcd] | 357 | } |
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[cb769bb] | 358 | |
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| 359 | |
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| 360 | #endif /* OWL_INCLUDE_REG_TESTS */ |
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