]>
Commit | Line | Data |
---|---|---|
e4db4a20 BB |
1 | /* |
2 | * Copyright 2018 Rubén Beltrán del Río | |
af4b488f | 3 | * |
e4db4a20 BB |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the |
5 | * License. You may obtain a copy of the License at | |
af4b488f | 6 | * |
e4db4a20 | 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
af4b488f | 8 | * |
e4db4a20 BB |
9 | * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an |
10 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the | |
11 | * specific language governing permissions and limitations under the License. | |
12 | */ | |
13 | ||
e4db4a20 BB |
14 | #include <ngx_config.h> |
15 | #include <ngx_core.h> | |
16 | #include <ngx_http.h> | |
17 | ||
fa2b280d BB |
18 | /* |
19 | * Declarations | |
20 | */ | |
21 | ||
fbdf81df BB |
22 | /* Constants */ |
23 | ||
24 | const ngx_uint_t WEEK_LENGTH = 7; | |
25 | const char * CLOSED_TOKEN = "closed"; | |
80c4c3cc | 26 | const ngx_str_t TIME_REGEX = ngx_string("([0-9]{1,2})(?:\\:([0-9]{2}))?\\-([0-9]{1,2})(?:\\:([0-9]{2}))?"); |
61fca89b BB |
27 | const ngx_str_t HEAD_HTML = ngx_string("<!doctype html><html><head><title>This website is currently closed!</title></head><body><h1>This website is currently closed!</h1><p>This website has closed for the day, please check our office hours below</p><ul>"); |
28 | const ngx_str_t MIDDLE_HTML = ngx_string("</ul><p><em>Current Server Time is: "); | |
29 | const ngx_str_t FOOT_HTML = ngx_string("</em></p></body></html>"); | |
30 | const char * DAY_NAMES[7] = { | |
31 | "Monday", | |
32 | "Tuesday", | |
33 | "Wednesday", | |
34 | "Thursday", | |
35 | "Friday", | |
36 | "Saturday", | |
37 | "Sunday" | |
38 | }; | |
fbdf81df | 39 | |
fa2b280d | 40 | /* Main Configuration Structure */ |
e4db4a20 BB |
41 | |
42 | typedef struct { | |
af4b488f BB |
43 | ngx_array_t *office_hours; |
44 | } ngx_http_office_hours_conf_t; | |
e4db4a20 | 45 | |
fa2b280d BB |
46 | /* Lifecycle Functions For Module Context */ |
47 | ||
af4b488f | 48 | static void *ngx_http_office_hours_create_conf(ngx_conf_t * cf); |
fa2b280d | 49 | static char *ngx_http_office_hours_merge_conf(ngx_conf_t * cf, |
f34685bb | 50 | void *parent, void *child); |
e4db4a20 BB |
51 | static ngx_int_t ngx_http_office_hours_init(ngx_conf_t * cf); |
52 | ||
fa2b280d BB |
53 | /* Configuration Handler */ |
54 | ||
55 | static char *ngx_http_office_hours(ngx_conf_t * cf, ngx_command_t * cmd, | |
56 | void *conf); | |
57 | ||
67206816 | 58 | /* Filter Storage */ |
fa2b280d | 59 | |
67206816 | 60 | static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
fa2b280d BB |
61 | static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
62 | ||
fbdf81df BB |
63 | /* Utility Functions */ |
64 | static ngx_uint_t ** parse_office_hours(ngx_array_t * office_hours); | |
65 | static ngx_uint_t * parse_office_hours_string(ngx_str_t office_hours); | |
66 | static ngx_flag_t within_office_hours(ngx_uint_t ** office_hours); | |
67 | static ngx_uint_t get_day_of_week(time_t time); | |
68 | static ngx_uint_t get_seconds_of_day(time_t time); | |
bbe15175 | 69 | static ngx_uint_t parse_number(ngx_str_t string, ngx_uint_t start, ngx_uint_t end); |
61fca89b BB |
70 | static ngx_str_t create_output_html(ngx_http_office_hours_conf_t * conf); |
71 | static char * format_hours(ngx_uint_t * seconds, char * day); | |
72 | static char * format_seconds(ngx_uint_t seconds); | |
73 | static char * left_pad(unsigned int number); | |
fbdf81df | 74 | |
61fca89b | 75 | /* Globals */ |
80c4c3cc | 76 | ngx_regex_compile_t rc; |
61fca89b | 77 | ngx_str_t OUTPUT_HTML; |
80c4c3cc | 78 | |
fa2b280d BB |
79 | /* |
80 | * Module Definitions | |
81 | */ | |
e4db4a20 | 82 | |
fa2b280d | 83 | /* Module Directives */ |
e4db4a20 BB |
84 | |
85 | static ngx_command_t ngx_http_office_hours_commands[] = { | |
86 | { | |
fa2b280d | 87 | ngx_string("office_hours"), |
fbdf81df | 88 | NGX_HTTP_MAIN_CONF | NGX_HTTP_SRV_CONF | NGX_HTTP_LOC_CONF | NGX_CONF_TAKE1 | NGX_CONF_TAKE2 | NGX_CONF_TAKE3 | NGX_CONF_TAKE4 | NGX_CONF_TAKE5 | NGX_CONF_TAKE6 | NGX_CONF_TAKE7, |
fa2b280d BB |
89 | ngx_http_office_hours, |
90 | NGX_HTTP_LOC_CONF_OFFSET, | |
91 | offsetof(ngx_http_office_hours_conf_t, office_hours), | |
92 | NULL | |
e4db4a20 BB |
93 | }, |
94 | ||
95 | ngx_null_command | |
96 | }; | |
97 | ||
fa2b280d | 98 | /* Module Context */ |
e4db4a20 BB |
99 | |
100 | static ngx_http_module_t ngx_http_office_hours_filter_module_ctx = { | |
fa2b280d BB |
101 | NULL, /* Preconfiguration */ |
102 | ngx_http_office_hours_init, /* Postconfiguration */ | |
e4db4a20 | 103 | |
fa2b280d BB |
104 | NULL, /* Create main configuration */ |
105 | NULL, /* Initialize main configuration */ | |
e4db4a20 | 106 | |
fa2b280d BB |
107 | NULL, /* Create server configuration */ |
108 | NULL, /* Merge server configuration */ | |
109 | ||
110 | ngx_http_office_hours_create_conf, /* Create location configuration */ | |
111 | ngx_http_office_hours_merge_conf /* Merge location configuration */ | |
e4db4a20 BB |
112 | }; |
113 | ||
fa2b280d | 114 | /* Module Definition */ |
e4db4a20 BB |
115 | |
116 | ngx_module_t ngx_http_office_hours_filter_module = { | |
fa2b280d BB |
117 | NGX_MODULE_V1, //Module Version |
118 | &ngx_http_office_hours_filter_module_ctx, //Module context | |
119 | ngx_http_office_hours_commands, //Module commands | |
120 | NGX_HTTP_MODULE, //Module Type | |
121 | NULL, //Initialize Master | |
122 | NULL, //Initialize Module | |
123 | NULL, //Initialize Process | |
124 | NULL, //Initialize Thread | |
125 | NULL, //Exit Thread | |
126 | NULL, //Exit Process | |
127 | NULL, //Exit Master | |
128 | NGX_MODULE_V1_PADDING | |
e4db4a20 BB |
129 | }; |
130 | ||
67206816 BB |
131 | /* |
132 | * Main Header Filter | |
133 | * If the current time is within office hours, it goes to the next | |
134 | * handler. Otherwise it sets the headers to 403 | |
135 | */ | |
136 | ||
137 | static ngx_int_t | |
138 | ngx_http_office_hours_header_filter(ngx_http_request_t * r) | |
139 | { | |
140 | ||
141 | ngx_uint_t ** parsed_office_hours; | |
142 | ngx_http_office_hours_conf_t *conf; | |
143 | ||
144 | conf = | |
145 | ngx_http_get_module_loc_conf(r, | |
146 | ngx_http_office_hours_filter_module); | |
147 | ||
67206816 BB |
148 | if (conf->office_hours == NULL) { |
149 | ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, | |
150 | "Office hours disabled"); | |
151 | return ngx_http_next_header_filter(r); | |
152 | } | |
153 | ||
154 | parsed_office_hours = parse_office_hours(conf->office_hours); | |
155 | ||
156 | if (within_office_hours(parsed_office_hours)) { | |
157 | ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, | |
158 | "Within office hours"); | |
159 | return ngx_http_next_header_filter(r); | |
160 | } | |
161 | ||
162 | ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, | |
163 | "Outside office hours"); | |
164 | ||
61fca89b BB |
165 | if (OUTPUT_HTML.data == NULL) { |
166 | OUTPUT_HTML = create_output_html(conf); | |
167 | } | |
168 | ||
67206816 BB |
169 | r->headers_out.status = NGX_HTTP_FORBIDDEN; |
170 | r->headers_out.content_length_n = OUTPUT_HTML.len; | |
171 | ||
172 | return ngx_http_next_header_filter(r); | |
173 | } | |
174 | ||
fa2b280d BB |
175 | /* |
176 | * Main Body Filter | |
177 | * If the current time is within office hours, it goes to the next | |
67206816 | 178 | * handler. Otherwise it replaces the body with the office hours. |
fa2b280d | 179 | */ |
e4db4a20 | 180 | |
af4b488f | 181 | static ngx_int_t |
67206816 | 182 | ngx_http_office_hours_body_filter(ngx_http_request_t * r, ngx_chain_t *in) |
af4b488f | 183 | { |
e4db4a20 | 184 | |
67206816 | 185 | ngx_buf_t *b; |
fbdf81df | 186 | ngx_uint_t ** parsed_office_hours; |
67206816 | 187 | ngx_chain_t out; |
af4b488f | 188 | ngx_http_office_hours_conf_t *conf; |
e4db4a20 | 189 | |
fa2b280d BB |
190 | conf = |
191 | ngx_http_get_module_loc_conf(r, | |
192 | ngx_http_office_hours_filter_module); | |
e4db4a20 BB |
193 | |
194 | if (conf->office_hours == NULL) { | |
fa2b280d | 195 | ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, |
fbdf81df | 196 | "Office hours disabled"); |
fa2b280d | 197 | return ngx_http_next_body_filter(r, in); |
e4db4a20 | 198 | } |
fa2b280d | 199 | |
fbdf81df | 200 | parsed_office_hours = parse_office_hours(conf->office_hours); |
e4db4a20 | 201 | |
fbdf81df | 202 | if (within_office_hours(parsed_office_hours)) { |
fa2b280d | 203 | ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, |
fbdf81df BB |
204 | "Within office hours"); |
205 | return ngx_http_next_body_filter(r, in); | |
e4db4a20 BB |
206 | } |
207 | ||
fbdf81df BB |
208 | ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0, |
209 | "Outside office hours"); | |
210 | ||
61fca89b BB |
211 | if (OUTPUT_HTML.data == NULL) { |
212 | OUTPUT_HTML = create_output_html(conf); | |
213 | } | |
214 | ||
67206816 BB |
215 | b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); |
216 | if (b == NULL) { | |
217 | ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "Failed to allocate response buffer."); | |
218 | return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
219 | } | |
220 | ||
221 | out.buf = b; | |
222 | out.next = NULL; | |
223 | ||
224 | b->start = OUTPUT_HTML.data; | |
225 | b->pos = b->start; | |
226 | b->end = OUTPUT_HTML.data + OUTPUT_HTML.len; | |
227 | b->last = b->end; | |
228 | ||
229 | b->memory = 1; | |
230 | b->last_buf = 1; | |
231 | ||
232 | return ngx_http_next_body_filter(r, &out); | |
e4db4a20 BB |
233 | } |
234 | ||
fa2b280d BB |
235 | /* |
236 | * Callback for `office_hours ` directive | |
237 | * Reads the configuration loaded from the config file(cf) | |
238 | * And writes it to the right place in the module configuration(conf) | |
239 | */ | |
e4db4a20 | 240 | |
fa2b280d BB |
241 | static char *ngx_http_office_hours(ngx_conf_t * cf, ngx_command_t * cmd, |
242 | void *conf) | |
af4b488f | 243 | { |
e4db4a20 | 244 | |
af4b488f | 245 | char *conf_structure = conf; |
e4db4a20 | 246 | |
fbdf81df | 247 | ngx_str_t *hours, *value; |
af4b488f | 248 | ngx_array_t **office_hours; |
af4b488f | 249 | ngx_uint_t i; |
e4db4a20 | 250 | |
fa2b280d BB |
251 | /* Gets the array from the config structure using the defined |
252 | * offset, and if the pointer is unset it creates a new one. | |
253 | * (The first element is the directive itself, so we should be | |
254 | * offset by 1) | |
255 | */ | |
256 | office_hours = (ngx_array_t **) (conf_structure + cmd->offset); | |
e4db4a20 BB |
257 | |
258 | if (*office_hours == NGX_CONF_UNSET_PTR) { | |
fa2b280d BB |
259 | *office_hours = ngx_array_create(cf->pool, cf->args->nelts - 1, |
260 | sizeof(ngx_str_t)); | |
e4db4a20 | 261 | |
fa2b280d BB |
262 | if (*office_hours == NULL) { |
263 | return NGX_CONF_ERROR; | |
264 | } | |
e4db4a20 | 265 | } |
e4db4a20 BB |
266 | value = cf->args->elts; |
267 | ||
268 | for (i = 1; i < cf->args->nelts; ++i) { | |
fa2b280d BB |
269 | hours = ngx_array_push(*office_hours); |
270 | if (hours == NULL) { | |
271 | return NGX_CONF_ERROR; | |
272 | } | |
273 | *hours = value[i]; | |
e4db4a20 BB |
274 | } |
275 | ||
276 | return NGX_CONF_OK; | |
277 | } | |
278 | ||
fa2b280d BB |
279 | /* |
280 | * Config Creator | |
281 | * Initializes the configuration structure | |
282 | */ | |
e4db4a20 | 283 | |
fa2b280d | 284 | static void *ngx_http_office_hours_create_conf(ngx_conf_t * cf) |
af4b488f | 285 | { |
e4db4a20 | 286 | |
af4b488f | 287 | ngx_http_office_hours_conf_t *conf; |
e4db4a20 BB |
288 | |
289 | conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_office_hours_conf_t)); | |
290 | ||
291 | if (conf == NULL) { | |
fa2b280d | 292 | return NULL; |
e4db4a20 | 293 | } |
e4db4a20 BB |
294 | conf->office_hours = NGX_CONF_UNSET_PTR; |
295 | ||
296 | return conf; | |
297 | } | |
298 | ||
fa2b280d BB |
299 | /* |
300 | * Merge Config Values | |
301 | * Sets the defaults for the configuration and merges | |
302 | * with other configurations | |
303 | */ | |
e4db4a20 | 304 | |
fa2b280d | 305 | static char *ngx_http_office_hours_merge_conf(ngx_conf_t * cf, |
f34685bb | 306 | void *parent, void *child) |
af4b488f | 307 | { |
e4db4a20 | 308 | |
af4b488f BB |
309 | ngx_http_office_hours_conf_t *prev = parent; |
310 | ngx_http_office_hours_conf_t *conf = child; | |
e4db4a20 BB |
311 | |
312 | ngx_conf_merge_ptr_value(conf->office_hours, prev->office_hours, NULL); | |
313 | ||
314 | return NGX_CONF_OK; | |
315 | } | |
316 | ||
fbdf81df BB |
317 | /* |
318 | * Parse the office hour strings in the configuration file | |
319 | * to fill out the hours array (in seconds) | |
320 | */ | |
321 | ||
322 | static ngx_uint_t ** parse_office_hours(ngx_array_t * office_hours) | |
323 | { | |
324 | ||
325 | ngx_str_t *hours; | |
326 | ngx_uint_t ** parsed_office_hours; | |
327 | ngx_uint_t i, j; | |
328 | ||
329 | parsed_office_hours = malloc(7 * sizeof(ngx_uint_t *)); | |
330 | ||
331 | hours = office_hours->elts; | |
332 | ||
333 | /* | |
334 | * On the configuration file, the leftmost element | |
335 | * always applies to all remaining days, all others | |
336 | * are read from right to left. So first we will apply | |
337 | * the initial override, and then iterate based on the | |
338 | * number of overrides | |
339 | */ | |
340 | ||
341 | for (i = 0; i < WEEK_LENGTH + 1 - office_hours->nelts; ++i) { | |
342 | parsed_office_hours[i] = parse_office_hours_string(hours[0]); | |
343 | } | |
344 | ||
345 | for (i = 1; i < office_hours->nelts; ++i) { | |
346 | j = WEEK_LENGTH - office_hours->nelts + i; | |
347 | parsed_office_hours[j] = parse_office_hours_string(hours[i]); | |
348 | } | |
349 | ||
350 | return parsed_office_hours; | |
351 | } | |
352 | ||
353 | /* | |
354 | * Given a time string or the closed token, return a tuple | |
355 | * of numbers representing opening and closing hours | |
356 | */ | |
357 | ||
358 | static ngx_uint_t * parse_office_hours_string(ngx_str_t office_hours) | |
359 | { | |
360 | ||
80c4c3cc BB |
361 | int captures[(1 + 4) * 3]; |
362 | ngx_int_t n; | |
fbdf81df BB |
363 | ngx_uint_t * parsed_hours; |
364 | ||
365 | parsed_hours = malloc(2 * sizeof(ngx_uint_t)); | |
366 | ||
367 | if(ngx_strcmp(office_hours.data, CLOSED_TOKEN) == 0) { | |
368 | parsed_hours[0] = 0; | |
369 | parsed_hours[1] = 0; | |
370 | return parsed_hours; | |
371 | } | |
372 | ||
80c4c3cc BB |
373 | n = ngx_regex_exec(rc.regex, &office_hours, captures, (1 + 4) * 3); |
374 | ||
375 | if (n >= 0) { | |
376 | /* Opening Hours */ | |
377 | ||
bbe15175 BB |
378 | parsed_hours[0] = 60 * 60 * parse_number(office_hours, captures[2], captures[3]); |
379 | parsed_hours[0] = parsed_hours[0] + 60 * parse_number(office_hours, captures[4], captures[5]); | |
80c4c3cc | 380 | |
bbe15175 BB |
381 | parsed_hours[1] = 60 * 60 * parse_number(office_hours, captures[6], captures[7]); |
382 | parsed_hours[1] = parsed_hours[1] + 60 * parse_number(office_hours, captures[8], captures[9]); | |
80c4c3cc BB |
383 | |
384 | return parsed_hours; | |
385 | } | |
386 | ||
387 | /* Non-matching strings count as open */ | |
388 | ||
fbdf81df BB |
389 | parsed_hours[0] = 0; |
390 | parsed_hours[1] = 86400; | |
391 | return parsed_hours; | |
392 | } | |
393 | ||
394 | /* | |
395 | * Given an office hours array, it returns whether or not | |
396 | * it is currently within office hours. | |
397 | */ | |
398 | ||
399 | static ngx_flag_t within_office_hours(ngx_uint_t ** office_hours) | |
400 | { | |
401 | ||
402 | time_t now; | |
403 | ngx_uint_t day_of_week, seconds_of_day; | |
404 | ngx_uint_t * current_hours; | |
405 | ||
406 | ngx_time_update(); | |
407 | now = ngx_time(); | |
408 | day_of_week = get_day_of_week(now); | |
409 | seconds_of_day = get_seconds_of_day(now); | |
410 | current_hours = office_hours[day_of_week]; | |
411 | ||
412 | return seconds_of_day >= current_hours[0] && seconds_of_day <= current_hours[1]; | |
413 | } | |
414 | ||
415 | /* | |
416 | * Calculate the day of the week given a timestamp | |
417 | */ | |
61fca89b | 418 | |
fbdf81df BB |
419 | static ngx_uint_t get_day_of_week(time_t time) |
420 | { | |
421 | ||
422 | /* Epoch was thursday, so add 3 so we start on monday */ | |
423 | return (time / 86400 + 3) % 7; | |
424 | } | |
425 | ||
426 | /* | |
427 | * Calculate the number of seconds elapsed today | |
428 | */ | |
61fca89b | 429 | |
fbdf81df BB |
430 | static ngx_uint_t get_seconds_of_day(time_t time) |
431 | { | |
432 | ||
433 | return time - (time / 86400) * 86400; | |
434 | } | |
bbe15175 BB |
435 | |
436 | /* | |
437 | * Parses a string, returns 0 if match was not found | |
438 | */ | |
61fca89b | 439 | |
bbe15175 BB |
440 | static ngx_uint_t parse_number(ngx_str_t string, ngx_uint_t start, ngx_uint_t end) |
441 | { | |
442 | ||
443 | if (end - start == 0) { | |
444 | return 0; | |
445 | } | |
446 | ||
447 | return ngx_atoi(&string.data[start], end - start); | |
448 | } | |
449 | ||
61fca89b BB |
450 | /* |
451 | * Given the current office hours configuration it creates the custom | |
452 | * HTML | |
453 | */ | |
454 | ||
455 | static ngx_str_t create_output_html(ngx_http_office_hours_conf_t * conf) | |
456 | { | |
457 | ||
458 | char * output_buffer; | |
459 | time_t now; | |
460 | ngx_str_t output_html; | |
461 | ngx_uint_t i, seconds_of_day; | |
462 | ngx_uint_t ** parsed_office_hours; | |
463 | ||
61fca89b BB |
464 | output_buffer = malloc(1024 * sizeof(char)); |
465 | parsed_office_hours = parse_office_hours(conf->office_hours); | |
466 | now = ngx_time(); | |
467 | seconds_of_day = get_seconds_of_day(now); | |
468 | ||
469 | sprintf(output_buffer, "%s", (char *) HEAD_HTML.data); | |
470 | ||
471 | for (i = 0; i < 7; ++i) { | |
472 | sprintf(output_buffer + strlen(output_buffer), "%s", format_hours(parsed_office_hours[i], (char *) DAY_NAMES[i])); | |
473 | } | |
474 | ||
475 | sprintf(output_buffer + strlen(output_buffer), "%s", (char *) MIDDLE_HTML.data); | |
476 | sprintf(output_buffer + strlen(output_buffer), "%s", format_seconds(seconds_of_day)); | |
477 | sprintf(output_buffer + strlen(output_buffer), "%s", (char *) FOOT_HTML.data); | |
478 | ||
479 | output_html.data = (unsigned char *) output_buffer; | |
480 | output_html.len = strlen(output_buffer); | |
481 | ||
482 | return output_html; | |
483 | } | |
484 | ||
485 | /* | |
486 | * Given a tuple of seconds and a day name, outputs an HTML | |
487 | * string containing the formatted data as a list item | |
488 | */ | |
489 | ||
490 | static char * format_hours(ngx_uint_t * hours, char * day) | |
491 | { | |
492 | ||
493 | char * output_html; | |
494 | ||
495 | output_html = malloc(64 * sizeof(char)); | |
496 | if (hours[0] == hours[1]) { | |
497 | sprintf(output_html, "<li><strong>%s</strong>: CLOSED</li>", | |
498 | day | |
499 | ); | |
500 | return output_html; | |
501 | } | |
502 | ||
503 | sprintf(output_html, "<li><strong>%s</strong>: %s - %s</li>", | |
504 | day, | |
505 | (char *) format_seconds(hours[0]), | |
506 | (char *) format_seconds(hours[1]) | |
507 | ); | |
508 | ||
509 | return output_html; | |
510 | } | |
511 | ||
512 | /* | |
513 | * Given seconds of the day, it returns a string showing | |
514 | * HH:MM in 24 hour format | |
515 | */ | |
516 | ||
517 | static char * format_seconds(ngx_uint_t seconds) | |
518 | { | |
519 | ||
520 | char * output_html; | |
521 | unsigned int hours, minutes; | |
522 | ||
523 | output_html = malloc(6 * sizeof(char)); | |
524 | ||
525 | hours = seconds / 60 / 60; | |
526 | minutes = (seconds / 60) % 60; | |
527 | ||
528 | sprintf(output_html, "%s:%s", | |
529 | left_pad(hours), | |
530 | left_pad(minutes) | |
531 | ); | |
532 | ||
533 | return output_html; | |
534 | } | |
535 | ||
536 | /* | |
537 | * Returns a number as a string adding 0 if < 10 | |
538 | */ | |
539 | ||
540 | static char * left_pad(unsigned int number) | |
541 | { | |
542 | ||
543 | char * output_string; | |
544 | char * padding; | |
545 | ||
546 | padding = ""; | |
f34685bb | 547 | output_string = malloc(4 * sizeof(char)); |
61fca89b BB |
548 | |
549 | if (number < 10) { | |
550 | padding = "0"; | |
551 | } | |
552 | ||
f34685bb | 553 | snprintf(output_string, 4, "%s%u", padding, number); |
61fca89b BB |
554 | |
555 | return output_string; | |
556 | } | |
557 | ||
bbe15175 BB |
558 | /* |
559 | * Postconfig Initialization Handler | |
560 | * Sets the request filter at the top of the chain | |
561 | */ | |
562 | ||
563 | static ngx_int_t ngx_http_office_hours_init(ngx_conf_t * cf) | |
564 | { | |
565 | ||
67206816 BB |
566 | ngx_http_next_header_filter = ngx_http_top_header_filter; |
567 | ngx_http_top_header_filter = ngx_http_office_hours_header_filter; | |
568 | ||
bbe15175 BB |
569 | ngx_http_next_body_filter = ngx_http_top_body_filter; |
570 | ngx_http_top_body_filter = ngx_http_office_hours_body_filter; | |
571 | ||
572 | rc.pattern = TIME_REGEX; | |
573 | rc.pool = cf->pool; | |
574 | if (ngx_regex_compile(&rc) != NGX_OK) { | |
575 | return NGX_ERROR; | |
576 | } | |
577 | ||
578 | return NGX_OK; | |
579 | } |