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