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