[7d4fbcd] | 1 | #include "owl.h" |
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| 2 | |
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[c08c70a] | 3 | static const char * owl_filterelement_get_field(const owl_message *m, const char * field) |
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[cb769bb] | 4 | { |
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[e19eb97] | 5 | const char *match; |
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[cb769bb] | 6 | if (!strcasecmp(field, "class")) { |
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| 7 | match=owl_message_get_class(m); |
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| 8 | } else if (!strcasecmp(field, "instance")) { |
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| 9 | match=owl_message_get_instance(m); |
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| 10 | } else if (!strcasecmp(field, "sender")) { |
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| 11 | match=owl_message_get_sender(m); |
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| 12 | } else if (!strcasecmp(field, "recipient")) { |
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| 13 | match=owl_message_get_recipient(m); |
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| 14 | } else if (!strcasecmp(field, "body")) { |
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| 15 | match=owl_message_get_body(m); |
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| 16 | } else if (!strcasecmp(field, "opcode")) { |
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| 17 | match=owl_message_get_opcode(m); |
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| 18 | } else if (!strcasecmp(field, "realm")) { |
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| 19 | match=owl_message_get_realm(m); |
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| 20 | } else if (!strcasecmp(field, "type")) { |
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| 21 | match=owl_message_get_type(m); |
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| 22 | } else if (!strcasecmp(field, "hostname")) { |
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| 23 | match=owl_message_get_hostname(m); |
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| 24 | } else if (!strcasecmp(field, "direction")) { |
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| 25 | if (owl_message_is_direction_out(m)) { |
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| 26 | match="out"; |
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| 27 | } else if (owl_message_is_direction_in(m)) { |
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| 28 | match="in"; |
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| 29 | } else if (owl_message_is_direction_none(m)) { |
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| 30 | match="none"; |
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| 31 | } else { |
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| 32 | match=""; |
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| 33 | } |
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| 34 | } else if (!strcasecmp(field, "login")) { |
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| 35 | if (owl_message_is_login(m)) { |
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| 36 | match="login"; |
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| 37 | } else if (owl_message_is_logout(m)) { |
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| 38 | match="logout"; |
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| 39 | } else { |
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| 40 | match="none"; |
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| 41 | } |
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| 42 | } else { |
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| 43 | match = owl_message_get_attribute_value(m,field); |
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| 44 | if(match == NULL) match = ""; |
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| 45 | } |
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| 46 | |
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| 47 | return match; |
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| 48 | } |
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[7d4fbcd] | 49 | |
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[c08c70a] | 50 | static int owl_filterelement_match_false(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 51 | { |
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[cb769bb] | 52 | return 0; |
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[7d4fbcd] | 53 | } |
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| 54 | |
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[c08c70a] | 55 | static int owl_filterelement_match_true(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 56 | { |
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[cb769bb] | 57 | return 1; |
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[7d4fbcd] | 58 | } |
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| 59 | |
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[c08c70a] | 60 | static int owl_filterelement_match_re(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 61 | { |
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[e19eb97] | 62 | const char * val = owl_filterelement_get_field(m, fe->field); |
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[41c9a96] | 63 | return !owl_regex_compare(&(fe->re), val, NULL, NULL); |
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[7d4fbcd] | 64 | } |
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| 65 | |
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[c08c70a] | 66 | static int owl_filterelement_match_filter(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 67 | { |
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[cb769bb] | 68 | owl_filter *subfilter; |
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| 69 | subfilter=owl_global_get_filter(&g, fe->field); |
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| 70 | if (!subfilter) { |
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| 71 | /* the filter does not exist, maybe because it was deleted. |
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| 72 | * Default to not matching |
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| 73 | */ |
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| 74 | return 0; |
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| 75 | } |
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| 76 | return owl_filter_message_match(subfilter, m); |
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[7d4fbcd] | 77 | } |
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| 78 | |
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[c08c70a] | 79 | static int owl_filterelement_match_perl(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 80 | { |
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[e19eb97] | 81 | const char *subname; |
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[65b2173] | 82 | char *perlrv; |
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[cb769bb] | 83 | int tf=0; |
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| 84 | |
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| 85 | subname = fe->field; |
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| 86 | if (!owl_perlconfig_is_function(subname)) { |
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| 87 | return 0; |
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| 88 | } |
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| 89 | perlrv = owl_perlconfig_call_with_message(subname, m); |
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| 90 | if (perlrv) { |
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| 91 | if (0 == strcmp(perlrv, "1")) { |
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| 92 | tf=1; |
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| 93 | } |
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| 94 | owl_free(perlrv); |
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| 95 | } |
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| 96 | return tf; |
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[7d4fbcd] | 97 | } |
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| 98 | |
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[c08c70a] | 99 | static int owl_filterelement_match_group(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 100 | { |
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[cb769bb] | 101 | return owl_filterelement_match(fe->left, m); |
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[7d4fbcd] | 102 | } |
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| 103 | |
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[cb769bb] | 104 | /* XXX: Our boolea operators short-circuit here. The original owl did |
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| 105 | not. Do we care? |
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| 106 | */ |
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| 107 | |
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[c08c70a] | 108 | static int owl_filterelement_match_and(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 109 | { |
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[cb769bb] | 110 | return owl_filterelement_match(fe->left, m) && |
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| 111 | owl_filterelement_match(fe->right, m); |
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[7d4fbcd] | 112 | } |
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| 113 | |
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[c08c70a] | 114 | static int owl_filterelement_match_or(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 115 | { |
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[cb769bb] | 116 | return owl_filterelement_match(fe->left, m) || |
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| 117 | owl_filterelement_match(fe->right, m); |
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[7d4fbcd] | 118 | } |
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| 119 | |
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[c08c70a] | 120 | static int owl_filterelement_match_not(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 121 | { |
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[cb769bb] | 122 | return !owl_filterelement_match(fe->left, m); |
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[7d4fbcd] | 123 | } |
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[5616acc] | 124 | |
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[af1920fd] | 125 | /* Print methods */ |
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[cb769bb] | 126 | |
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[0504f63] | 127 | static void owl_filterelement_print_true(owl_filterelement *fe, GString *buf) |
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[40458b9] | 128 | { |
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[0504f63] | 129 | g_string_append(buf, "true"); |
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[40458b9] | 130 | } |
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| 131 | |
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[0504f63] | 132 | static void owl_filterelement_print_false(owl_filterelement *fe, GString *buf) |
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[32eed98] | 133 | { |
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[0504f63] | 134 | g_string_append(buf, "false"); |
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[32eed98] | 135 | } |
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| 136 | |
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[0504f63] | 137 | static void owl_filterelement_print_re(owl_filterelement *fe, GString *buf) |
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[e187445] | 138 | { |
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[e19eb97] | 139 | const char *re, *q; |
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[0504f63] | 140 | g_string_append(buf, fe->field); |
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| 141 | g_string_append(buf, " "); |
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[81655f8] | 142 | |
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| 143 | re = owl_regex_get_string(&(fe->re)); |
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| 144 | q = owl_getquoting(re); |
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[0504f63] | 145 | g_string_append(buf, q); |
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| 146 | g_string_append(buf, re); |
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| 147 | g_string_append(buf, q); |
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[cb769bb] | 148 | } |
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| 149 | |
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[0504f63] | 150 | static void owl_filterelement_print_filter(owl_filterelement *fe, GString *buf) |
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[cb769bb] | 151 | { |
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[0504f63] | 152 | g_string_append(buf, "filter "); |
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| 153 | g_string_append(buf, fe->field); |
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[cb769bb] | 154 | } |
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| 155 | |
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[0504f63] | 156 | static void owl_filterelement_print_perl(owl_filterelement *fe, GString *buf) |
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[cb769bb] | 157 | { |
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[0504f63] | 158 | g_string_append(buf, "perl "); |
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| 159 | g_string_append(buf, fe->field); |
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[7d4fbcd] | 160 | } |
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| 161 | |
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[0504f63] | 162 | static void owl_filterelement_print_group(owl_filterelement *fe, GString *buf) |
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[e187445] | 163 | { |
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[0504f63] | 164 | g_string_append(buf, "( "); |
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[cb769bb] | 165 | owl_filterelement_print(fe->left, buf) ; |
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[0504f63] | 166 | g_string_append(buf, " )"); |
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[7d4fbcd] | 167 | } |
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| 168 | |
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[0504f63] | 169 | static void owl_filterelement_print_or(owl_filterelement *fe, GString *buf) |
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[e187445] | 170 | { |
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[cb769bb] | 171 | owl_filterelement_print(fe->left, buf); |
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[0504f63] | 172 | g_string_append(buf, " or "); |
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[cb769bb] | 173 | owl_filterelement_print(fe->right, buf); |
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[7d4fbcd] | 174 | } |
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| 175 | |
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[0504f63] | 176 | static void owl_filterelement_print_and(owl_filterelement *fe, GString *buf) |
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[e187445] | 177 | { |
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[cb769bb] | 178 | owl_filterelement_print(fe->left, buf); |
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[0504f63] | 179 | g_string_append(buf, " and "); |
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[cb769bb] | 180 | owl_filterelement_print(fe->right, buf); |
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[7d4fbcd] | 181 | } |
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| 182 | |
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[0504f63] | 183 | static void owl_filterelement_print_not(owl_filterelement *fe, GString *buf) |
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[e187445] | 184 | { |
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[0504f63] | 185 | g_string_append(buf, " not "); |
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[cb769bb] | 186 | owl_filterelement_print(fe->left, buf); |
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| 187 | } |
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| 188 | |
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[af1920fd] | 189 | /* Constructors */ |
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[cb769bb] | 190 | |
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| 191 | void owl_filterelement_create(owl_filterelement *fe) { |
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| 192 | fe->field = NULL; |
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| 193 | fe->left = fe->right = NULL; |
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| 194 | fe->match_message = NULL; |
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| 195 | fe->print_elt = NULL; |
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| 196 | owl_regex_init(&(fe->re)); |
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[7d4fbcd] | 197 | } |
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| 198 | |
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[cb769bb] | 199 | |
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| 200 | void owl_filterelement_create_true(owl_filterelement *fe) |
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| 201 | { |
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| 202 | owl_filterelement_create(fe); |
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| 203 | fe->match_message = owl_filterelement_match_true; |
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| 204 | fe->print_elt = owl_filterelement_print_true; |
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| 205 | } |
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| 206 | |
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| 207 | void owl_filterelement_create_false(owl_filterelement *fe) |
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[e187445] | 208 | { |
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[cb769bb] | 209 | owl_filterelement_create(fe); |
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| 210 | fe->match_message = owl_filterelement_match_false; |
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| 211 | fe->print_elt = owl_filterelement_print_false; |
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[7d4fbcd] | 212 | } |
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| 213 | |
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[e19eb97] | 214 | int owl_filterelement_create_re(owl_filterelement *fe, const char *field, const char *re) |
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[e187445] | 215 | { |
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[cb769bb] | 216 | owl_filterelement_create(fe); |
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| 217 | fe->field=owl_strdup(field); |
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[e6a4dd5] | 218 | if(owl_regex_create(&(fe->re), re)) { |
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| 219 | free(fe->field); |
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| 220 | fe->field = NULL; |
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| 221 | return (-1); |
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| 222 | } |
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[cb769bb] | 223 | fe->match_message = owl_filterelement_match_re; |
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| 224 | fe->print_elt = owl_filterelement_print_re; |
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[e6a4dd5] | 225 | return 0; |
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[7d4fbcd] | 226 | } |
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| 227 | |
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[e19eb97] | 228 | void owl_filterelement_create_filter(owl_filterelement *fe, const char *name) |
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[e187445] | 229 | { |
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[cb769bb] | 230 | owl_filterelement_create(fe); |
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| 231 | fe->field=owl_strdup(name); |
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| 232 | fe->match_message = owl_filterelement_match_filter; |
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| 233 | fe->print_elt = owl_filterelement_print_filter; |
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[7d4fbcd] | 234 | } |
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| 235 | |
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[e19eb97] | 236 | void owl_filterelement_create_perl(owl_filterelement *fe, const char *name) |
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[e187445] | 237 | { |
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[cb769bb] | 238 | owl_filterelement_create(fe); |
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| 239 | fe->field=owl_strdup(name); |
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| 240 | fe->match_message = owl_filterelement_match_perl; |
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| 241 | fe->print_elt = owl_filterelement_print_perl; |
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[7d4fbcd] | 242 | } |
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| 243 | |
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[cb769bb] | 244 | void owl_filterelement_create_group(owl_filterelement *fe, owl_filterelement *in) |
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[e187445] | 245 | { |
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[cb769bb] | 246 | owl_filterelement_create(fe); |
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| 247 | fe->left = in; |
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| 248 | fe->match_message = owl_filterelement_match_group; |
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| 249 | fe->print_elt = owl_filterelement_print_group; |
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[7d4fbcd] | 250 | } |
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| 251 | |
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[cb769bb] | 252 | void owl_filterelement_create_not(owl_filterelement *fe, owl_filterelement *in) |
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[32eed98] | 253 | { |
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[cb769bb] | 254 | owl_filterelement_create(fe); |
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| 255 | fe->left = in; |
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| 256 | fe->match_message = owl_filterelement_match_not; |
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| 257 | fe->print_elt = owl_filterelement_print_not; |
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[32eed98] | 258 | } |
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| 259 | |
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[cb769bb] | 260 | void owl_filterelement_create_and(owl_filterelement *fe, owl_filterelement *lhs, owl_filterelement *rhs) |
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[e187445] | 261 | { |
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[cb769bb] | 262 | owl_filterelement_create(fe); |
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| 263 | fe->left = lhs; |
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| 264 | fe->right = rhs; |
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| 265 | fe->match_message = owl_filterelement_match_and; |
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| 266 | fe->print_elt = owl_filterelement_print_and; |
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[7d4fbcd] | 267 | } |
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| 268 | |
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[cb769bb] | 269 | void owl_filterelement_create_or(owl_filterelement *fe, owl_filterelement *lhs, owl_filterelement *rhs) |
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[40458b9] | 270 | { |
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[cb769bb] | 271 | owl_filterelement_create(fe); |
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| 272 | fe->left = lhs; |
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| 273 | fe->right = rhs; |
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| 274 | fe->match_message = owl_filterelement_match_or; |
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| 275 | fe->print_elt = owl_filterelement_print_or; |
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[40458b9] | 276 | } |
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| 277 | |
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[c08c70a] | 278 | int owl_filterelement_match(owl_filterelement *fe, const owl_message *m) |
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[e187445] | 279 | { |
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[cb769bb] | 280 | if(!fe) return 0; |
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| 281 | if(!fe->match_message) return 0; |
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| 282 | return fe->match_message(fe, m); |
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[40458b9] | 283 | } |
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| 284 | |
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[f446454] | 285 | static int fe_visiting = 0; |
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| 286 | static int fe_visited = 1; |
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| 287 | |
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[cb769bb] | 288 | int owl_filterelement_is_toodeep(owl_filter *f, owl_filterelement *fe) |
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[40458b9] | 289 | { |
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[f446454] | 290 | int rv; |
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[cb769bb] | 291 | owl_dict filters; |
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| 292 | owl_dict_create(&filters); |
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[f446454] | 293 | |
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| 294 | owl_dict_insert_element(&filters, f->name, &fe_visiting, owl_dict_noop_free); |
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| 295 | |
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| 296 | rv = _owl_filterelement_is_toodeep(fe, &filters); |
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| 297 | |
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| 298 | owl_dict_free_simple(&filters); |
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| 299 | return rv; |
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| 300 | } |
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| 301 | |
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| 302 | int _owl_filterelement_is_toodeep(owl_filterelement *fe, owl_dict *seen) |
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| 303 | { |
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| 304 | int rv = 0; |
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| 305 | owl_filter *f; |
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| 306 | |
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| 307 | if(fe->match_message == owl_filterelement_match_filter) { |
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| 308 | int *nval = owl_dict_find_element(seen, fe->field); |
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| 309 | if(nval == &fe_visiting) { |
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| 310 | return 1; |
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| 311 | } else if (nval == NULL) { |
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[cb769bb] | 312 | f = owl_global_get_filter(&g, fe->field); |
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[f446454] | 313 | owl_dict_insert_element(seen, fe->field, &fe_visiting, owl_dict_noop_free); |
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| 314 | if(f) rv = _owl_filterelement_is_toodeep(f->root, seen); |
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| 315 | owl_dict_insert_element(seen, fe->field, &fe_visited, owl_dict_noop_free); |
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[cb769bb] | 316 | } |
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[f446454] | 317 | } else { |
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| 318 | if(fe->left) |
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| 319 | rv = rv || _owl_filterelement_is_toodeep(fe->left, seen); |
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| 320 | if(fe->right) |
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| 321 | rv = rv || _owl_filterelement_is_toodeep(fe->right, seen); |
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[cb769bb] | 322 | } |
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[f446454] | 323 | return rv; |
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[7d4fbcd] | 324 | } |
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| 325 | |
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[cb769bb] | 326 | void owl_filterelement_free(owl_filterelement *fe) |
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[e187445] | 327 | { |
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[cb769bb] | 328 | if (fe->field) owl_free(fe->field); |
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| 329 | if (fe->left) { |
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| 330 | owl_filterelement_free(fe->left); |
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| 331 | owl_free(fe->left); |
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[7d4fbcd] | 332 | } |
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[cb769bb] | 333 | if (fe->right) { |
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| 334 | owl_filterelement_free(fe->right); |
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| 335 | owl_free(fe->right); |
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[7d4fbcd] | 336 | } |
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[cb769bb] | 337 | owl_regex_free(&(fe->re)); |
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| 338 | } |
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[40458b9] | 339 | |
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[0504f63] | 340 | void owl_filterelement_print(owl_filterelement *fe, GString *buf) |
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[cb769bb] | 341 | { |
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| 342 | if(!fe || !fe->print_elt) return; |
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| 343 | fe->print_elt(fe, buf); |
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[7d4fbcd] | 344 | } |
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