[7d4fbcd] | 1 | #include "owl.h" |
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| 2 | |
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[1aee7d9] | 3 | static const char fileIdent[] = "$Id$"; |
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| 4 | |
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[cb769bb] | 5 | static char * owl_filterelement_get_field(owl_message *m, char * field) |
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| 6 | { |
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| 7 | char *match; |
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| 8 | if (!strcasecmp(field, "class")) { |
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| 9 | match=owl_message_get_class(m); |
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| 10 | } else if (!strcasecmp(field, "instance")) { |
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| 11 | match=owl_message_get_instance(m); |
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| 12 | } else if (!strcasecmp(field, "sender")) { |
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| 13 | match=owl_message_get_sender(m); |
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| 14 | } else if (!strcasecmp(field, "recipient")) { |
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| 15 | match=owl_message_get_recipient(m); |
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| 16 | } else if (!strcasecmp(field, "body")) { |
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| 17 | match=owl_message_get_body(m); |
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| 18 | } else if (!strcasecmp(field, "opcode")) { |
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| 19 | match=owl_message_get_opcode(m); |
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| 20 | } else if (!strcasecmp(field, "realm")) { |
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| 21 | match=owl_message_get_realm(m); |
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| 22 | } else if (!strcasecmp(field, "type")) { |
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| 23 | match=owl_message_get_type(m); |
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| 24 | } else if (!strcasecmp(field, "hostname")) { |
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| 25 | match=owl_message_get_hostname(m); |
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| 26 | } else if (!strcasecmp(field, "direction")) { |
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| 27 | if (owl_message_is_direction_out(m)) { |
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| 28 | match="out"; |
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| 29 | } else if (owl_message_is_direction_in(m)) { |
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| 30 | match="in"; |
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| 31 | } else if (owl_message_is_direction_none(m)) { |
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| 32 | match="none"; |
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| 33 | } else { |
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| 34 | match=""; |
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| 35 | } |
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| 36 | } else if (!strcasecmp(field, "login")) { |
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| 37 | if (owl_message_is_login(m)) { |
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| 38 | match="login"; |
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| 39 | } else if (owl_message_is_logout(m)) { |
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| 40 | match="logout"; |
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| 41 | } else { |
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| 42 | match="none"; |
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| 43 | } |
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| 44 | } else { |
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| 45 | match = owl_message_get_attribute_value(m,field); |
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| 46 | if(match == NULL) match = ""; |
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| 47 | } |
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| 48 | |
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| 49 | return match; |
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| 50 | } |
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[7d4fbcd] | 51 | |
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[cb769bb] | 52 | static int owl_filterelement_match_false(owl_filterelement *fe, owl_message *m) |
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[e187445] | 53 | { |
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[cb769bb] | 54 | return 0; |
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[7d4fbcd] | 55 | } |
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| 56 | |
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[cb769bb] | 57 | static int owl_filterelement_match_true(owl_filterelement *fe, owl_message *m) |
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[e187445] | 58 | { |
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[cb769bb] | 59 | return 1; |
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[7d4fbcd] | 60 | } |
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| 61 | |
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[cb769bb] | 62 | static int owl_filterelement_match_re(owl_filterelement *fe, owl_message *m) |
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[e187445] | 63 | { |
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[cb769bb] | 64 | char * val = owl_filterelement_get_field(m, fe->field); |
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| 65 | return !owl_regex_compare(&(fe->re), val); |
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[7d4fbcd] | 66 | } |
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| 67 | |
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[cb769bb] | 68 | static int owl_filterelement_match_filter(owl_filterelement *fe, owl_message *m) |
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[e187445] | 69 | { |
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[cb769bb] | 70 | owl_filter *subfilter; |
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| 71 | subfilter=owl_global_get_filter(&g, fe->field); |
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| 72 | if (!subfilter) { |
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| 73 | /* the filter does not exist, maybe because it was deleted. |
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| 74 | * Default to not matching |
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| 75 | */ |
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| 76 | return 0; |
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| 77 | } |
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| 78 | return owl_filter_message_match(subfilter, m); |
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[7d4fbcd] | 79 | } |
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| 80 | |
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[cb769bb] | 81 | static int owl_filterelement_match_perl(owl_filterelement *fe, owl_message *m) |
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[e187445] | 82 | { |
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[cb769bb] | 83 | char *subname, *perlrv; |
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| 84 | int tf=0; |
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| 85 | |
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| 86 | subname = fe->field; |
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| 87 | if (!owl_perlconfig_is_function(subname)) { |
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| 88 | return 0; |
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| 89 | } |
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| 90 | perlrv = owl_perlconfig_call_with_message(subname, m); |
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| 91 | if (perlrv) { |
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| 92 | if (0 == strcmp(perlrv, "1")) { |
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| 93 | tf=1; |
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| 94 | } |
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| 95 | owl_free(perlrv); |
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| 96 | } |
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| 97 | return tf; |
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[7d4fbcd] | 98 | } |
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| 99 | |
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[cb769bb] | 100 | static int owl_filterelement_match_group(owl_filterelement *fe, owl_message *m) |
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[e187445] | 101 | { |
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[cb769bb] | 102 | return owl_filterelement_match(fe->left, m); |
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[7d4fbcd] | 103 | } |
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| 104 | |
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[cb769bb] | 105 | /* XXX: Our boolea operators short-circuit here. The original owl did |
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| 106 | not. Do we care? |
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| 107 | */ |
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| 108 | |
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| 109 | static int owl_filterelement_match_and(owl_filterelement *fe, owl_message *m) |
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[e187445] | 110 | { |
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[cb769bb] | 111 | return owl_filterelement_match(fe->left, m) && |
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| 112 | owl_filterelement_match(fe->right, m); |
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[7d4fbcd] | 113 | } |
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| 114 | |
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[cb769bb] | 115 | static int owl_filterelement_match_or(owl_filterelement *fe, owl_message *m) |
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[e187445] | 116 | { |
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[cb769bb] | 117 | return owl_filterelement_match(fe->left, m) || |
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| 118 | owl_filterelement_match(fe->right, m); |
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[7d4fbcd] | 119 | } |
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| 120 | |
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[cb769bb] | 121 | static int owl_filterelement_match_not(owl_filterelement *fe, owl_message *m) |
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[e187445] | 122 | { |
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[cb769bb] | 123 | return !owl_filterelement_match(fe->left, m); |
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[7d4fbcd] | 124 | } |
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[5616acc] | 125 | |
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[af1920fd] | 126 | /* Print methods */ |
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[cb769bb] | 127 | |
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| 128 | static void owl_filterelement_print_true(owl_filterelement *fe, char *buf) |
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[40458b9] | 129 | { |
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[cb769bb] | 130 | strcat(buf, "true"); |
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[40458b9] | 131 | } |
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| 132 | |
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[cb769bb] | 133 | static void owl_filterelement_print_false(owl_filterelement *fe, char *buf) |
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[32eed98] | 134 | { |
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[cb769bb] | 135 | strcat(buf, "false"); |
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[32eed98] | 136 | } |
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| 137 | |
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[cb769bb] | 138 | static void owl_filterelement_print_re(owl_filterelement *fe, char *buf) |
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[e187445] | 139 | { |
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[cb769bb] | 140 | strcat(buf, fe->field); |
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| 141 | strcat(buf, " "); |
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| 142 | strcat(buf, owl_regex_get_string(&(fe->re))); |
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| 143 | } |
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| 144 | |
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| 145 | static void owl_filterelement_print_filter(owl_filterelement *fe, char *buf) |
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| 146 | { |
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| 147 | strcat(buf, "filter "); |
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| 148 | strcat(buf, fe->field); |
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| 149 | } |
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| 150 | |
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| 151 | static void owl_filterelement_print_perl(owl_filterelement *fe, char *buf) |
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| 152 | { |
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| 153 | strcat(buf, "perl "); |
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| 154 | strcat(buf, fe->field); |
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[7d4fbcd] | 155 | } |
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| 156 | |
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[cb769bb] | 157 | static void owl_filterelement_print_group(owl_filterelement *fe, char *buf) |
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[e187445] | 158 | { |
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[cb769bb] | 159 | strcat(buf, "( "); |
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| 160 | owl_filterelement_print(fe->left, buf) ; |
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| 161 | strcat(buf, " )"); |
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[7d4fbcd] | 162 | } |
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| 163 | |
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[cb769bb] | 164 | static void owl_filterelement_print_or(owl_filterelement *fe, char *buf) |
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[e187445] | 165 | { |
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[cb769bb] | 166 | owl_filterelement_print(fe->left, buf); |
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| 167 | strcat(buf, " or "); |
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| 168 | owl_filterelement_print(fe->right, buf); |
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[7d4fbcd] | 169 | } |
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| 170 | |
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[cb769bb] | 171 | static void owl_filterelement_print_and(owl_filterelement *fe, char *buf) |
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[e187445] | 172 | { |
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[cb769bb] | 173 | owl_filterelement_print(fe->left, buf); |
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| 174 | strcat(buf, " and "); |
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| 175 | owl_filterelement_print(fe->right, buf); |
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[7d4fbcd] | 176 | } |
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| 177 | |
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[cb769bb] | 178 | static void owl_filterelement_print_not(owl_filterelement *fe, char *buf) |
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[e187445] | 179 | { |
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[cb769bb] | 180 | strcat(buf, " not "); |
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| 181 | owl_filterelement_print(fe->left, buf); |
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| 182 | } |
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| 183 | |
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[af1920fd] | 184 | /* Constructors */ |
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[cb769bb] | 185 | |
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| 186 | void owl_filterelement_create(owl_filterelement *fe) { |
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| 187 | fe->field = NULL; |
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| 188 | fe->left = fe->right = NULL; |
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| 189 | fe->match_message = NULL; |
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| 190 | fe->print_elt = NULL; |
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| 191 | owl_regex_init(&(fe->re)); |
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[7d4fbcd] | 192 | } |
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| 193 | |
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[cb769bb] | 194 | |
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| 195 | void owl_filterelement_create_true(owl_filterelement *fe) |
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| 196 | { |
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| 197 | owl_filterelement_create(fe); |
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| 198 | fe->match_message = owl_filterelement_match_true; |
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| 199 | fe->print_elt = owl_filterelement_print_true; |
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| 200 | } |
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| 201 | |
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| 202 | void owl_filterelement_create_false(owl_filterelement *fe) |
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[e187445] | 203 | { |
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[cb769bb] | 204 | owl_filterelement_create(fe); |
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| 205 | fe->match_message = owl_filterelement_match_false; |
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| 206 | fe->print_elt = owl_filterelement_print_false; |
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[7d4fbcd] | 207 | } |
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| 208 | |
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[cb769bb] | 209 | void owl_filterelement_create_re(owl_filterelement *fe, char *field, char *re) |
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[e187445] | 210 | { |
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[cb769bb] | 211 | owl_filterelement_create(fe); |
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| 212 | fe->field=owl_strdup(field); |
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| 213 | owl_regex_create(&(fe->re), re); |
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| 214 | fe->match_message = owl_filterelement_match_re; |
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| 215 | fe->print_elt = owl_filterelement_print_re; |
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[7d4fbcd] | 216 | } |
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| 217 | |
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[cb769bb] | 218 | void owl_filterelement_create_filter(owl_filterelement *fe, char *name) |
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[e187445] | 219 | { |
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[cb769bb] | 220 | owl_filterelement_create(fe); |
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| 221 | fe->field=owl_strdup(name); |
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| 222 | fe->match_message = owl_filterelement_match_filter; |
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| 223 | fe->print_elt = owl_filterelement_print_filter; |
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[7d4fbcd] | 224 | } |
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| 225 | |
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[cb769bb] | 226 | void owl_filterelement_create_perl(owl_filterelement *fe, char *name) |
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[e187445] | 227 | { |
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[cb769bb] | 228 | owl_filterelement_create(fe); |
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| 229 | fe->field=owl_strdup(name); |
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| 230 | fe->match_message = owl_filterelement_match_perl; |
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| 231 | fe->print_elt = owl_filterelement_print_perl; |
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[7d4fbcd] | 232 | } |
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| 233 | |
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[cb769bb] | 234 | void owl_filterelement_create_group(owl_filterelement *fe, owl_filterelement *in) |
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[e187445] | 235 | { |
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[cb769bb] | 236 | owl_filterelement_create(fe); |
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| 237 | fe->left = in; |
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| 238 | fe->match_message = owl_filterelement_match_group; |
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| 239 | fe->print_elt = owl_filterelement_print_group; |
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[7d4fbcd] | 240 | } |
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| 241 | |
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[cb769bb] | 242 | void owl_filterelement_create_not(owl_filterelement *fe, owl_filterelement *in) |
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[32eed98] | 243 | { |
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[cb769bb] | 244 | owl_filterelement_create(fe); |
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| 245 | fe->left = in; |
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| 246 | fe->match_message = owl_filterelement_match_not; |
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| 247 | fe->print_elt = owl_filterelement_print_not; |
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[32eed98] | 248 | } |
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| 249 | |
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[cb769bb] | 250 | void owl_filterelement_create_and(owl_filterelement *fe, owl_filterelement *lhs, owl_filterelement *rhs) |
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[e187445] | 251 | { |
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[cb769bb] | 252 | owl_filterelement_create(fe); |
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| 253 | fe->left = lhs; |
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| 254 | fe->right = rhs; |
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| 255 | fe->match_message = owl_filterelement_match_and; |
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| 256 | fe->print_elt = owl_filterelement_print_and; |
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[7d4fbcd] | 257 | } |
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| 258 | |
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[cb769bb] | 259 | void owl_filterelement_create_or(owl_filterelement *fe, owl_filterelement *lhs, owl_filterelement *rhs) |
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[40458b9] | 260 | { |
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[cb769bb] | 261 | owl_filterelement_create(fe); |
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| 262 | fe->left = lhs; |
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| 263 | fe->right = rhs; |
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| 264 | fe->match_message = owl_filterelement_match_or; |
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| 265 | fe->print_elt = owl_filterelement_print_or; |
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[40458b9] | 266 | } |
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| 267 | |
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[cb769bb] | 268 | int owl_filterelement_match(owl_filterelement *fe, owl_message *m) |
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[e187445] | 269 | { |
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[cb769bb] | 270 | if(!fe) return 0; |
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| 271 | if(!fe->match_message) return 0; |
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| 272 | return fe->match_message(fe, m); |
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[40458b9] | 273 | } |
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| 274 | |
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[cb769bb] | 275 | int owl_filterelement_is_toodeep(owl_filter *f, owl_filterelement *fe) |
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[40458b9] | 276 | { |
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[cb769bb] | 277 | int one = 1; |
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| 278 | owl_list nodes; |
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| 279 | owl_dict filters; |
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| 280 | owl_list_create(&nodes); |
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| 281 | owl_dict_create(&filters); |
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| 282 | |
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| 283 | owl_list_append_element(&nodes, fe); |
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| 284 | owl_dict_insert_element(&filters, f->name, &one, NULL); |
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| 285 | while(owl_list_get_size(&nodes)) { |
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| 286 | fe = owl_list_get_element(&nodes, 0); |
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| 287 | owl_list_remove_element(&nodes, 0); |
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| 288 | if(fe->left) owl_list_append_element(&nodes, fe->left); |
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| 289 | if(fe->right) owl_list_append_element(&nodes, fe->right); |
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| 290 | if(fe->match_message == owl_filterelement_match_filter) { |
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| 291 | if(owl_dict_find_element(&filters, fe->field)) return 1; |
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| 292 | owl_dict_insert_element(&filters, fe->field, &one, NULL); |
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| 293 | f = owl_global_get_filter(&g, fe->field); |
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| 294 | if(f) owl_list_append_element(&nodes, f->root); |
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| 295 | } |
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| 296 | } |
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| 297 | |
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| 298 | owl_list_free_simple(&nodes); |
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| 299 | owl_dict_free_simple(&filters); |
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| 300 | return 0; |
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[7d4fbcd] | 301 | } |
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| 302 | |
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[cb769bb] | 303 | void owl_filterelement_free(owl_filterelement *fe) |
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[e187445] | 304 | { |
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[cb769bb] | 305 | if (fe->field) owl_free(fe->field); |
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| 306 | if (fe->left) { |
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| 307 | owl_filterelement_free(fe->left); |
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| 308 | owl_free(fe->left); |
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[7d4fbcd] | 309 | } |
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[cb769bb] | 310 | if (fe->right) { |
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| 311 | owl_filterelement_free(fe->right); |
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| 312 | owl_free(fe->right); |
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[7d4fbcd] | 313 | } |
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[cb769bb] | 314 | owl_regex_free(&(fe->re)); |
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| 315 | } |
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[40458b9] | 316 | |
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[cb769bb] | 317 | void owl_filterelement_print(owl_filterelement *fe, char *buf) |
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| 318 | { |
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| 319 | if(!fe || !fe->print_elt) return; |
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| 320 | fe->print_elt(fe, buf); |
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[7d4fbcd] | 321 | } |
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