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4 nishi 1 
/* $Id: config.c 187 2024-09-28 00:07:34Z nishi $ */
2 
 
16 nishi 3 
#define SOURCE
4 
 
4 nishi 5 
#include "tw_config.h"
17 nishi 6 
#include "tw_module.h"
4 nishi 7 
 
8 
#include <stdio.h>
7 nishi 9 
#include <stdint.h>
4 nishi 10 
#include <stdlib.h>
11 
#include <string.h>
12 nishi 12 
#include <unistd.h>
4 nishi 13 
 
20 nishi 14 
#ifdef __MINGW32__
15 
#include <winsock2.h>
16 
#endif
17 
 
4 nishi 18 
#include <cm_string.h>
19 
#include <cm_log.h>
20 
 
6 nishi 21 
struct tw_config config;
22 
 
12 nishi 23 
struct tw_config_entry* tw_vhost_match(const char* name, int port) {
24 
	int i;
25 
	for(i = 0; i < config.vhost_count; i++) {
13 nishi 26 
		if(strcmp(config.vhosts[i].name, name) == 0 && (config.vhosts[i].port == -1 ? 1 : config.vhosts[i].port == port)) {
12 nishi 27 
			return &config.vhosts[i];
28 
		}
29 
	}
30 
	return &config.root;
31 
}
32 
 
22 nishi 33 
bool tw_permission_allowed(const char* path, SOCKADDR addr, struct tw_http_request req, struct tw_config_entry* vhost) {
21 nishi 34 
	int i;
35 
	bool found = false;
36 
	bool pathstart = false;
37 
	bool perm = false;
38 
again:
22 nishi 39 
	for(i = 0; i < vhost->dir_count; i++) {
21 nishi 40 
		struct tw_dir_entry* e = &vhost->dirs[i];
41 
		pathstart = false;
22 nishi 42 
		if(strlen(path) >= strlen(e->dir)) {
21 nishi 43 
			pathstart = true;
44 
			int j;
22 nishi 45 
			for(j = 0; path[j] != 0 && e->dir[j] != 0; j++) {
46 
				if(path[j] != e->dir[j]) {
21 nishi 47 
					pathstart = false;
48 
					break;
49 
				}
50 
			}
51 
		}
52 
		char* noslash = cm_strdup(e->dir);
53 
		noslash[strlen(noslash) - 1] = 0;
22 nishi 54 
		if(strcmp(e->dir, path) == 0 || strcmp(noslash, path) == 0 || pathstart) {
21 nishi 55 
			found = true;
22 nishi 56 
			if(strcmp(e->name, "all") == 0) {
21 nishi 57 
				perm = e->type == TW_DIR_ALLOW;
58 
			}
59 
		}
60 
		free(noslash);
61 
	}
22 nishi 62 
	if(!found && vhost != &config.root) {
21 nishi 63 
		vhost = &config.root;
64 
		goto again;
65 
	}
66 
	return perm;
67 
}
68 
 
7 nishi 69 
void tw_config_init(void) {
70 
	int i;
71 
	for(i = 0; i < MAX_PORTS + 1; i++) {
72 
		config.ports[i] = -1;
73 
	}
12 nishi 74 
	for(i = 0; i < MAX_VHOSTS; i++) {
156 nishi 75 
#ifndef NO_SSL
12 nishi 76 
		config.vhosts[i].sslkey = NULL;
77 
		config.vhosts[i].sslcert = NULL;
156 nishi 78 
#endif
19 nishi 79 
		config.vhosts[i].root = NULL;
156 nishi 80 
#ifdef HAS_CHROOT
81 
		config.vhosts[i].chroot_path = NULL;
82 
#endif
12 nishi 83 
	}
156 nishi 84 
#ifndef NO_SSL
12 nishi 85 
	config.root.sslkey = NULL;
86 
	config.root.sslcert = NULL;
156 nishi 87 
#endif
19 nishi 88 
	config.root.root = NULL;
21 nishi 89 
	config.root.mime_count = 0;
90 
	config.root.dir_count = 0;
22 nishi 91 
	config.root.icon_count = 0;
24 nishi 92 
	config.root.index_count = 0;
33 nishi 93 
	config.root.readme_count = 0;
123 nishi 94 
	config.root.hideport = 0;
156 nishi 95 
#ifdef HAS_CHROOT
96 
	config.root.chroot_path = NULL;
97 
#endif
12 nishi 98 
	config.vhost_count = 0;
18 nishi 99 
	config.module_count = 0;
100 
	config.extension = NULL;
17 nishi 101 
	config.server_root = cm_strdup(PREFIX);
128 nishi 102 
	config.server_admin = cm_strdup(SERVER_ADMIN);
156 nishi 103 
	config.defined[0] = NULL;
187 nishi 104 
#if defined(_PSP)
182 nishi 105 
	strcpy(config.hostname, "psp");
187 nishi 106 
#elif defined(__PPU__)
107 
	strcpy(config.hostname, "ps3");
182 nishi 108 
#else
12 nishi 109 
	gethostname(config.hostname, 1024);
182 nishi 110 
#endif
161 nishi 111 
#ifdef HAS_CHROOT
112 
	tw_add_define("HAS_CHROOT");
113 
#endif
174 nishi 114 
#ifndef NO_SSL
115 
	tw_add_define("HAS_SSL");
116 
#endif
7 nishi 117 
}
6 nishi 118 
 
119 
int tw_config_read(const char* path) {
4 nishi 120 
	cm_log("Config", "Reading %s", path);
121 
	char cbuf[2];
122 
	cbuf[1] = 0;
6 nishi 123 
	int ln = 0;
156 nishi 124 
	int ifbr = 0;
125 
	int ignore = -1;
4 nishi 126 
	FILE* f = fopen(path, "r");
6 nishi 127 
	if(f != NULL) {
4 nishi 128 
		char* line = malloc(1);
129 
		line[0] = 0;
6 nishi 130 
		int stop = 0;
12 nishi 131 
		struct tw_config_entry* current = &config.root;
6 nishi 132 
		char* vhost = NULL;
21 nishi 133 
		char* dir = NULL;
6 nishi 134 
		while(stop == 0) {
4 nishi 135 
			int c = fread(cbuf, 1, 1, f);
6 nishi 136 
			if(cbuf[0] == '\n' || c <= 0) {
137 
				ln++;
4 nishi 138 
				char* l = cm_trim(line);
6 nishi 139 
				if(strlen(l) > 0 && l[0] != '#') {
5 nishi 140 
					char** r = cm_split(l, " \t");
141 
					int i;
156 nishi 142 
					if(ignore != -1 && ifbr >= ignore) {
143 
						if(cm_strcaseequ(r[0], "EndIf")) ifbr--;
144 
						if(ifbr == 0) {
145 
							ignore = -1;
146 
						}
147 
					} else if(cm_strcaseequ(r[0], "Include") || cm_strcaseequ(r[0], "IncludeOptional")) {
6 nishi 148 
						for(i = 1; r[i] != NULL; i++) {
149 
							if(tw_config_read(r[i]) != 0 && cm_strcaseequ(r[0], "Include")) {
150 
								stop = 1;
151 
								break;
5 nishi 152 
							}
153 
						}
156 nishi 154 
					} else if(cm_strcaseequ(r[0], "Define")) {
155 
						if(r[1] == NULL) {
156 
							cm_log("Config", "Missing name at line %d", ln);
157 
							stop = 1;
158 
						} else {
159 
							tw_add_define(r[1]);
160 
						}
161 
					} else if(cm_strcaseequ(r[0], "Undefine")) {
162 
						if(r[1] == NULL) {
163 
							cm_log("Config", "Missing name at line %d", ln);
164 
							stop = 1;
165 
						} else {
166 
							tw_delete_define(r[1]);
167 
						}
21 nishi 168 
					} else if(cm_strcaseequ(r[0], "BeginDirectory")) {
169 
						if(dir != NULL) {
170 
							cm_log("Config", "Already in directory section at line %d", ln);
171 
							stop = 1;
172 
						} else {
173 
							if(r[1] == NULL) {
174 
								cm_log("Config", "Missing directory at line %d", ln);
175 
								stop = 1;
176 
							} else {
177 
								dir = cm_strcat(r[1], r[1][strlen(r[1]) - 1] == '/' ? "" : "/");
178 
							}
179 
						}
180 
					} else if(cm_strcaseequ(r[0], "EndDirectory")) {
181 
						if(dir == NULL) {
182 
							cm_log("Config", "Not in directory section at line %d", ln);
183 
							stop = 1;
184 
						} else {
185 
							free(dir);
186 
							dir = NULL;
187 
						}
188 
					} else if(cm_strcaseequ(r[0], "Allow")) {
189 
						if(dir == NULL) {
190 
							cm_log("Config", "Not in directory section at line %d", ln);
191 
							stop = 1;
192 
						} else {
193 
							if(r[1] == NULL) {
194 
								cm_log("Config", "Missing argument at line %d", ln);
195 
								stop = 1;
196 
							} else {
197 
								struct tw_dir_entry* e = &current->dirs[current->dir_count++];
198 
								e->name = cm_strdup(r[1]);
199 
								e->dir = cm_strdup(dir);
200 
								e->type = TW_DIR_ALLOW;
201 
							}
202 
						}
203 
					} else if(cm_strcaseequ(r[0], "Deny")) {
204 
						if(dir == NULL) {
205 
							cm_log("Config", "Not in directory section at line %d", ln);
206 
							stop = 1;
207 
						} else {
208 
							if(r[1] == NULL) {
209 
								cm_log("Config", "Missing argument at line %d", ln);
210 
								stop = 1;
211 
							} else {
212 
								struct tw_dir_entry* e = &current->dirs[current->dir_count++];
213 
								e->name = cm_strdup(r[1]);
214 
								e->dir = cm_strdup(dir);
215 
								e->type = TW_DIR_DENY;
216 
							}
217 
						}
6 nishi 218 
					} else if(cm_strcaseequ(r[0], "BeginVirtualHost")) {
219 
						if(vhost != NULL) {
12 nishi 220 
							cm_log("Config", "Already in virtual host section at line %d", ln);
6 nishi 221 
							stop = 1;
222 
						} else {
223 
							if(r[1] == NULL) {
12 nishi 224 
								cm_log("Config", "Missing virtual host at line %d", ln);
6 nishi 225 
								stop = 1;
226 
							} else {
227 
								vhost = cm_strdup(r[1]);
12 nishi 228 
								current = &config.vhosts[config.vhost_count++];
21 nishi 229 
								current->dir_count = 0;
230 
								current->mime_count = 0;
22 nishi 231 
								current->icon_count = 0;
24 nishi 232 
								current->index_count = 0;
33 nishi 233 
								current->readme_count = 0;
123 nishi 234 
								current->hideport = -1;
12 nishi 235 
								int i;
236 
								current->name = cm_strdup(vhost);
13 nishi 237 
								current->port = -1;
12 nishi 238 
								for(i = 0; vhost[i] != 0; i++) {
239 
									if(vhost[i] == ':') {
240 
										current->name[i] = 0;
241 
										current->port = atoi(current->name + i + 1);
242 
										break;
243 
									}
244 
								}
6 nishi 245 
							}
246 
						}
247 
					} else if(cm_strcaseequ(r[0], "EndVirtualHost")) {
248 
						if(vhost == NULL) {
12 nishi 249 
							cm_log("Config", "Not in virtual host section at line %d", ln);
6 nishi 250 
							stop = 1;
251 
						} else {
252 
							free(vhost);
253 
							vhost = NULL;
12 nishi 254 
							current = &config.root;
6 nishi 255 
						}
174 nishi 256 
					} else if(cm_strcaseequ(r[0], "Listen")
257 
#ifndef NO_SSL
258 
						  || cm_strcaseequ(r[0], "ListenSSL")
259 
#endif
260 
					) {
7 nishi 261 
						for(i = 1; r[i] != NULL; i++) {
262 
							uint64_t port = atoi(r[i]);
263 
							cm_log("Config", "Going to listen at port %d%s", (int)port, cm_strcaseequ(r[0], "ListenSSL") ? " with SSL" : "");
264 
							if(cm_strcaseequ(r[0], "ListenSSL")) port |= (1ULL << 32);
265 
							int j;
266 
							for(j = 0; config.ports[j] != -1; j++)
267 
								;
268 
							config.ports[j] = port;
269 
						}
123 nishi 270 
					} else if(cm_strcaseequ(r[0], "HidePort")) {
271 
						current->hideport = 1;
272 
					} else if(cm_strcaseequ(r[0], "ShowPort")) {
273 
						current->hideport = 0;
156 nishi 274 
#ifndef NO_SSL
12 nishi 275 
					} else if(cm_strcaseequ(r[0], "SSLKey")) {
276 
						if(r[1] == NULL) {
277 
							cm_log("Config", "Missing path at line %d", ln);
278 
							stop = 1;
279 
						} else {
280 
							if(current->sslkey != NULL) free(current->sslkey);
281 
							current->sslkey = cm_strdup(r[1]);
282 
						}
283 
					} else if(cm_strcaseequ(r[0], "SSLCertificate")) {
284 
						if(r[1] == NULL) {
285 
							cm_log("Config", "Missing path at line %d", ln);
286 
							stop = 1;
287 
						} else {
288 
							if(current->sslcert != NULL) free(current->sslcert);
289 
							current->sslcert = cm_strdup(r[1]);
290 
						}
156 nishi 291 
#endif
161 nishi 292 
#ifdef HAS_CHROOT
293 
					} else if(cm_strcaseequ(r[0], "ChrootDirectory")) {
294 
						if(r[1] == NULL) {
295 
							cm_log("Config", "Missing path at line %d", ln);
296 
							stop = 1;
297 
						} else {
298 
							if(current->chroot_path != NULL) free(current->chroot_path);
299 
							current->chroot_path = cm_strdup(r[1]);
300 
						}
301 
#endif
156 nishi 302 
					} else if(cm_strcaseequ(r[0], "ForceLog")) {
303 
						if(r[1] == NULL) {
304 
							cm_log("Config", "Missing log at line %d", ln);
305 
							stop = 1;
306 
						} else {
307 
							cm_force_log(r[1]);
308 
						}
309 
					} else if(cm_strcaseequ(r[0], "EndIf")) {
310 
						if(ifbr == 0) {
311 
							cm_log("Config", "Missing BeginIf at line %d", ln);
312 
							stop = 1;
313 
						}
314 
						ifbr--;
315 
					} else if(cm_strcaseequ(r[0], "BeginIf") || cm_strcaseequ(r[0], "BeginIfNot")) {
316 
						if(r[1] == NULL) {
317 
							cm_log("Config", "Missing condition type at line %d", ln);
318 
						} else {
319 
							ifbr++;
320 
							bool ign = false;
321 
							if(cm_strcaseequ(r[1], "False")) {
322 
								ign = true;
323 
							} else if(cm_strcaseequ(r[1], "True")) {
324 
							} else if(cm_strcaseequ(r[1], "Defined")) {
325 
								if(r[2] == NULL) {
326 
									cm_log("Config", "Missing name at line %d", ln);
327 
									stop = 1;
328 
								} else {
329 
									int i;
330 
									bool fndit = false;
331 
									for(i = 0; config.defined[i] != NULL; i++) {
332 
										if(strcmp(config.defined[i], r[2]) == 0) {
333 
											fndit = true;
334 
											break;
335 
										}
336 
									}
337 
									if(!fndit) {
338 
										ign = true;
339 
									}
340 
								}
341 
							} else {
342 
								cm_log("Config", "Unknown condition type at line %d", ln);
343 
								stop = 1;
344 
							}
345 
							if(cm_strcaseequ(r[0], "BeginIfNot")) ign = !ign;
346 
							if(ign) {
347 
								ignore = ifbr - 1;
348 
							}
349 
						}
61 nishi 350 
					} else if(cm_strcaseequ(r[0], "ServerRoot")) {
351 
						if(r[1] == NULL) {
352 
							cm_log("Config", "Missing path at line %d", ln);
353 
							stop = 1;
354 
						} else {
355 
							chdir(r[1]);
127 nishi 356 
							free(config.server_root);
357 
							config.server_root = cm_strdup(r[1]);
61 nishi 358 
						}
128 nishi 359 
					} else if(cm_strcaseequ(r[0], "ServerAdmin")) {
360 
						if(r[1] == NULL) {
361 
							cm_log("Config", "Missing email at line %d", ln);
362 
							stop = 1;
363 
						} else {
364 
							free(config.server_admin);
365 
							config.server_admin = cm_strdup(r[1]);
366 
						}
19 nishi 367 
					} else if(cm_strcaseequ(r[0], "DocumentRoot")) {
368 
						if(r[1] == NULL) {
369 
							cm_log("Config", "Missing path at line %d", ln);
370 
							stop = 1;
371 
						} else {
372 
							if(current->root != NULL) free(current->root);
21 nishi 373 
							current->root = cm_strdup(strcmp(r[1], "/") == 0 ? "" : r[1]);
19 nishi 374 
						}
21 nishi 375 
					} else if(cm_strcaseequ(r[0], "MIMEType")) {
376 
						if(r[1] == NULL) {
377 
							cm_log("Config", "Missing extension at line %d", ln);
378 
							stop = 1;
22 nishi 379 
						} else if(r[2] == NULL) {
21 nishi 380 
							cm_log("Config", "Missing MIME at line %d", ln);
381 
							stop = 1;
382 
						} else {
383 
							struct tw_mime_entry* e = &current->mimes[current->mime_count++];
384 
							e->ext = cm_strdup(r[1]);
385 
							e->mime = cm_strdup(r[2]);
386 
						}
22 nishi 387 
					} else if(cm_strcaseequ(r[0], "Icon")) {
388 
						if(r[1] == NULL) {
389 
							cm_log("Config", "Missing MIME at line %d", ln);
390 
							stop = 1;
391 
						} else if(r[2] == NULL) {
392 
							cm_log("Config", "Missing path at line %d", ln);
393 
							stop = 1;
394 
						} else {
395 
							struct tw_icon_entry* e = &current->icons[current->icon_count++];
396 
							e->mime = cm_strdup(r[1]);
397 
							e->icon = cm_strdup(r[2]);
398 
						}
17 nishi 399 
					} else if(cm_strcaseequ(r[0], "LoadModule")) {
400 
						for(i = 1; r[i] != NULL; i++) {
401 
							void* mod = tw_module_load(r[i]);
402 
							if(mod != NULL) {
18 nishi 403 
								config.modules[config.module_count++] = mod;
17 nishi 404 
								if(tw_module_init(mod) != 0) {
405 
									stop = 1;
406 
									break;
407 
								}
408 
							} else {
127 nishi 409 
								cm_log("Config", "Could not load the module at line %d", ln);
17 nishi 410 
								stop = 1;
411 
								break;
412 
							}
413 
						}
24 nishi 414 
					} else if(cm_strcaseequ(r[0], "DirectoryIndex")) {
415 
						for(i = 1; r[i] != NULL; i++) {
416 
							current->indexes[current->index_count++] = cm_strdup(r[i]);
417 
						}
178 nishi 418 
					} else if(cm_strcaseequ(r[0], "ReadmeFile") || cm_strcaseequ(r[0], "Readme")) {
182 nishi 419 
						if(cm_strcaseequ(r[0], "Readme")) {
178 nishi 420 
							cm_force_log("NOTE: Readme directive is deprecated.");
421 
						}
33 nishi 422 
						for(i = 1; r[i] != NULL; i++) {
423 
							current->readmes[current->readme_count++] = cm_strdup(r[i]);
424 
						}
6 nishi 425 
					} else {
39 nishi 426 
						stop = 1;
6 nishi 427 
						if(r[0] != NULL) {
39 nishi 428 
							int argc;
429 
							for(argc = 0; r[argc] != NULL; argc++)
430 
								;
431 
							stop = 0;
432 
							int i;
433 
							bool called = false;
434 
							struct tw_tool tools;
435 
							tw_init_tools(&tools);
436 
							for(i = 0; i < config.module_count; i++) {
437 
								tw_mod_config_t mod_config = (tw_mod_config_t)tw_module_symbol(config.modules[i], "mod_config");
438 
								int resp;
439 
								if(mod_config != NULL && (resp = mod_config(&tools, r, argc)) == TW_CONFIG_PARSED) {
440 
									called = true;
441 
									break;
442 
								}
443 
								if(resp == TW_CONFIG_ERROR) {
444 
									stop = 1;
445 
									called = true;
446 
									break;
447 
								}
448 
							}
449 
							if(!called) {
450 
								cm_log("Config", "Unknown directive `%s' at line %d", r[0], ln);
451 
								stop = 1;
452 
							}
6 nishi 453 
						}
5 nishi 454 
					}
455 
					for(i = 0; r[i] != NULL; i++) free(r[i]);
456 
					free(r);
4 nishi 457 
				}
458 
				free(l);
459 
				free(line);
460 
				line = malloc(1);
461 
				line[0] = 0;
462 
				if(c <= 0) break;
6 nishi 463 
			} else if(cbuf[0] != '\r') {
4 nishi 464 
				char* tmp = line;
465 
				line = cm_strcat(tmp, cbuf);
466 
				free(tmp);
467 
			}
468 
		}
469 
		free(line);
470 
		fclose(f);
6 nishi 471 
		return stop;
472 
	} else {
5 nishi 473 
		cm_log("Config", "Could not open the file");
4 nishi 474 
		return 1;
475 
	}
476 
}