config.c@ 161

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Last change on this file since 161 was 161, checked in by Nishi, on Sep 25, 2024 at 10:35:04 PM
adding chroot
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File size: 12.7 KB

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1	/* $Id: config.c 161 2024-09-25 13:35:04Z nishi $ */
2
3	#define SOURCE
4
5	#include "tw_config.h"
6	#include "tw_module.h"
7
8	#include <stdio.h>
9	#include <stdint.h>
10	#include <stdlib.h>
11	#include <string.h>
12	#include <unistd.h>
13
14	#ifdef __MINGW32__
15	#include <winsock2.h>
16	#endif
17
18	#include <cm_string.h>
19	#include <cm_log.h>
20
21	struct tw_config config;
22
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++) {
26	if(strcmp(config.vhosts[i].name, name) == 0 && (config.vhosts[i].port == -1 ? 1 : config.vhosts[i].port == port)) {
27	return &config.vhosts[i];
28	}
29	}
30	return &config.root;
31	}
32
33	bool tw_permission_allowed(const char* path, SOCKADDR addr, struct tw_http_request req, struct tw_config_entry* vhost) {
34	int i;
35	bool found = false;
36	bool pathstart = false;
37	bool perm = false;
38	again:
39	for(i = 0; i < vhost->dir_count; i++) {
40	struct tw_dir_entry* e = &vhost->dirs[i];
41	pathstart = false;
42	if(strlen(path) >= strlen(e->dir)) {
43	pathstart = true;
44	int j;
45	for(j = 0; path[j] != 0 && e->dir[j] != 0; j++) {
46	if(path[j] != e->dir[j]) {
47	pathstart = false;
48	break;
49	}
50	}
51	}
52	char* noslash = cm_strdup(e->dir);
53	noslash[strlen(noslash) - 1] = 0;
54	if(strcmp(e->dir, path) == 0 \|\| strcmp(noslash, path) == 0 \|\| pathstart) {
55	found = true;
56	if(strcmp(e->name, "all") == 0) {
57	perm = e->type == TW_DIR_ALLOW;
58	}
59	}
60	free(noslash);
61	}
62	if(!found && vhost != &config.root) {
63	vhost = &config.root;
64	goto again;
65	}
66	return perm;
67	}
68
69	void tw_config_init(void) {
70	int i;
71	for(i = 0; i < MAX_PORTS + 1; i++) {
72	config.ports[i] = -1;
73	}
74	for(i = 0; i < MAX_VHOSTS; i++) {
75	#ifndef NO_SSL
76	config.vhosts[i].sslkey = NULL;
77	config.vhosts[i].sslcert = NULL;
78	#endif
79	config.vhosts[i].root = NULL;
80	#ifdef HAS_CHROOT
81	config.vhosts[i].chroot_path = NULL;
82	#endif
83	}
84	#ifndef NO_SSL
85	config.root.sslkey = NULL;
86	config.root.sslcert = NULL;
87	#endif
88	config.root.root = NULL;
89	config.root.mime_count = 0;
90	config.root.dir_count = 0;
91	config.root.icon_count = 0;
92	config.root.index_count = 0;
93	config.root.readme_count = 0;
94	config.root.hideport = 0;
95	#ifdef HAS_CHROOT
96	config.root.chroot_path = NULL;
97	#endif
98	config.vhost_count = 0;
99	config.module_count = 0;
100	config.extension = NULL;
101	config.server_root = cm_strdup(PREFIX);
102	config.server_admin = cm_strdup(SERVER_ADMIN);
103	config.defined[0] = NULL;
104	gethostname(config.hostname, 1024);
105	#ifdef HAS_CHROOT
106	tw_add_define("HAS_CHROOT");
107	#endif
108	}
109
110	int tw_config_read(const char* path) {
111	cm_log("Config", "Reading %s", path);
112	char cbuf[2];
113	cbuf[1] = 0;
114	int ln = 0;
115	int ifbr = 0;
116	int ignore = -1;
117	FILE* f = fopen(path, "r");
118	if(f != NULL) {
119	char* line = malloc(1);
120	line[0] = 0;
121	int stop = 0;
122	struct tw_config_entry* current = &config.root;
123	char* vhost = NULL;
124	char* dir = NULL;
125	while(stop == 0) {
126	int c = fread(cbuf, 1, 1, f);
127	if(cbuf[0] == '\n' \|\| c <= 0) {
128	ln++;
129	char* l = cm_trim(line);
130	if(strlen(l) > 0 && l[0] != '#') {
131	char** r = cm_split(l, " \t");
132	int i;
133	if(ignore != -1 && ifbr >= ignore) {
134	if(cm_strcaseequ(r[0], "EndIf")) ifbr--;
135	if(ifbr == 0) {
136	ignore = -1;
137	}
138	} else if(cm_strcaseequ(r[0], "Include") \|\| cm_strcaseequ(r[0], "IncludeOptional")) {
139	for(i = 1; r[i] != NULL; i++) {
140	if(tw_config_read(r[i]) != 0 && cm_strcaseequ(r[0], "Include")) {
141	stop = 1;
142	break;
143	}
144	}
145	} else if(cm_strcaseequ(r[0], "Define")) {
146	if(r[1] == NULL) {
147	cm_log("Config", "Missing name at line %d", ln);
148	stop = 1;
149	} else {
150	tw_add_define(r[1]);
151	}
152	} else if(cm_strcaseequ(r[0], "Undefine")) {
153	if(r[1] == NULL) {
154	cm_log("Config", "Missing name at line %d", ln);
155	stop = 1;
156	} else {
157	tw_delete_define(r[1]);
158	}
159	} else if(cm_strcaseequ(r[0], "BeginDirectory")) {
160	if(dir != NULL) {
161	cm_log("Config", "Already in directory section at line %d", ln);
162	stop = 1;
163	} else {
164	if(r[1] == NULL) {
165	cm_log("Config", "Missing directory at line %d", ln);
166	stop = 1;
167	} else {
168	dir = cm_strcat(r[1], r[1][strlen(r[1]) - 1] == '/' ? "" : "/");
169	}
170	}
171	} else if(cm_strcaseequ(r[0], "EndDirectory")) {
172	if(dir == NULL) {
173	cm_log("Config", "Not in directory section at line %d", ln);
174	stop = 1;
175	} else {
176	free(dir);
177	dir = NULL;
178	}
179	} else if(cm_strcaseequ(r[0], "Allow")) {
180	if(dir == NULL) {
181	cm_log("Config", "Not in directory section at line %d", ln);
182	stop = 1;
183	} else {
184	if(r[1] == NULL) {
185	cm_log("Config", "Missing argument at line %d", ln);
186	stop = 1;
187	} else {
188	struct tw_dir_entry* e = &current->dirs[current->dir_count++];
189	e->name = cm_strdup(r[1]);
190	e->dir = cm_strdup(dir);
191	e->type = TW_DIR_ALLOW;
192	}
193	}
194	} else if(cm_strcaseequ(r[0], "Deny")) {
195	if(dir == NULL) {
196	cm_log("Config", "Not in directory section at line %d", ln);
197	stop = 1;
198	} else {
199	if(r[1] == NULL) {
200	cm_log("Config", "Missing argument at line %d", ln);
201	stop = 1;
202	} else {
203	struct tw_dir_entry* e = &current->dirs[current->dir_count++];
204	e->name = cm_strdup(r[1]);
205	e->dir = cm_strdup(dir);
206	e->type = TW_DIR_DENY;
207	}
208	}
209	} else if(cm_strcaseequ(r[0], "BeginVirtualHost")) {
210	if(vhost != NULL) {
211	cm_log("Config", "Already in virtual host section at line %d", ln);
212	stop = 1;
213	} else {
214	if(r[1] == NULL) {
215	cm_log("Config", "Missing virtual host at line %d", ln);
216	stop = 1;
217	} else {
218	vhost = cm_strdup(r[1]);
219	current = &config.vhosts[config.vhost_count++];
220	current->dir_count = 0;
221	current->mime_count = 0;
222	current->icon_count = 0;
223	current->index_count = 0;
224	current->readme_count = 0;
225	current->hideport = -1;
226	int i;
227	current->name = cm_strdup(vhost);
228	current->port = -1;
229	for(i = 0; vhost[i] != 0; i++) {
230	if(vhost[i] == ':') {
231	current->name[i] = 0;
232	current->port = atoi(current->name + i + 1);
233	break;
234	}
235	}
236	}
237	}
238	} else if(cm_strcaseequ(r[0], "EndVirtualHost")) {
239	if(vhost == NULL) {
240	cm_log("Config", "Not in virtual host section at line %d", ln);
241	stop = 1;
242	} else {
243	free(vhost);
244	vhost = NULL;
245	current = &config.root;
246	}
247	} else if(cm_strcaseequ(r[0], "Listen") \|\| cm_strcaseequ(r[0], "ListenSSL")) {
248	for(i = 1; r[i] != NULL; i++) {
249	uint64_t port = atoi(r[i]);
250	cm_log("Config", "Going to listen at port %d%s", (int)port, cm_strcaseequ(r[0], "ListenSSL") ? " with SSL" : "");
251	if(cm_strcaseequ(r[0], "ListenSSL")) port \|= (1ULL << 32);
252	int j;
253	for(j = 0; config.ports[j] != -1; j++)
254	;
255	config.ports[j] = port;
256	}
257	} else if(cm_strcaseequ(r[0], "HidePort")) {
258	current->hideport = 1;
259	} else if(cm_strcaseequ(r[0], "ShowPort")) {
260	current->hideport = 0;
261	#ifndef NO_SSL
262	} else if(cm_strcaseequ(r[0], "SSLKey")) {
263	if(r[1] == NULL) {
264	cm_log("Config", "Missing path at line %d", ln);
265	stop = 1;
266	} else {
267	if(current->sslkey != NULL) free(current->sslkey);
268	current->sslkey = cm_strdup(r[1]);
269	}
270	} else if(cm_strcaseequ(r[0], "SSLCertificate")) {
271	if(r[1] == NULL) {
272	cm_log("Config", "Missing path at line %d", ln);
273	stop = 1;
274	} else {
275	if(current->sslcert != NULL) free(current->sslcert);
276	current->sslcert = cm_strdup(r[1]);
277	}
278	#endif
279	#ifdef HAS_CHROOT
280	} else if(cm_strcaseequ(r[0], "ChrootDirectory")) {
281	if(r[1] == NULL) {
282	cm_log("Config", "Missing path at line %d", ln);
283	stop = 1;
284	} else {
285	if(current->chroot_path != NULL) free(current->chroot_path);
286	current->chroot_path = cm_strdup(r[1]);
287	}
288	#endif
289	} else if(cm_strcaseequ(r[0], "ForceLog")) {
290	if(r[1] == NULL) {
291	cm_log("Config", "Missing log at line %d", ln);
292	stop = 1;
293	} else {
294	cm_force_log(r[1]);
295	}
296	} else if(cm_strcaseequ(r[0], "EndIf")) {
297	if(ifbr == 0) {
298	cm_log("Config", "Missing BeginIf at line %d", ln);
299	stop = 1;
300	}
301	ifbr--;
302	} else if(cm_strcaseequ(r[0], "BeginIf") \|\| cm_strcaseequ(r[0], "BeginIfNot")) {
303	if(r[1] == NULL) {
304	cm_log("Config", "Missing condition type at line %d", ln);
305	} else {
306	ifbr++;
307	bool ign = false;
308	if(cm_strcaseequ(r[1], "False")) {
309	ign = true;
310	} else if(cm_strcaseequ(r[1], "True")) {
311	} else if(cm_strcaseequ(r[1], "Defined")) {
312	if(r[2] == NULL) {
313	cm_log("Config", "Missing name at line %d", ln);
314	stop = 1;
315	} else {
316	int i;
317	bool fndit = false;
318	for(i = 0; config.defined[i] != NULL; i++) {
319	if(strcmp(config.defined[i], r[2]) == 0) {
320	fndit = true;
321	break;
322	}
323	}
324	if(!fndit) {
325	ign = true;
326	}
327	}
328	} else {
329	cm_log("Config", "Unknown condition type at line %d", ln);
330	stop = 1;
331	}
332	if(cm_strcaseequ(r[0], "BeginIfNot")) ign = !ign;
333	if(ign) {
334	ignore = ifbr - 1;
335	}
336	}
337	} else if(cm_strcaseequ(r[0], "ServerRoot")) {
338	if(r[1] == NULL) {
339	cm_log("Config", "Missing path at line %d", ln);
340	stop = 1;
341	} else {
342	chdir(r[1]);
343	free(config.server_root);
344	config.server_root = cm_strdup(r[1]);
345	}
346	} else if(cm_strcaseequ(r[0], "ServerAdmin")) {
347	if(r[1] == NULL) {
348	cm_log("Config", "Missing email at line %d", ln);
349	stop = 1;
350	} else {
351	free(config.server_admin);
352	config.server_admin = cm_strdup(r[1]);
353	}
354	} else if(cm_strcaseequ(r[0], "DocumentRoot")) {
355	if(r[1] == NULL) {
356	cm_log("Config", "Missing path at line %d", ln);
357	stop = 1;
358	} else {
359	if(current->root != NULL) free(current->root);
360	current->root = cm_strdup(strcmp(r[1], "/") == 0 ? "" : r[1]);
361	}
362	} else if(cm_strcaseequ(r[0], "MIMEType")) {
363	if(r[1] == NULL) {
364	cm_log("Config", "Missing extension at line %d", ln);
365	stop = 1;
366	} else if(r[2] == NULL) {
367	cm_log("Config", "Missing MIME at line %d", ln);
368	stop = 1;
369	} else {
370	struct tw_mime_entry* e = &current->mimes[current->mime_count++];
371	e->ext = cm_strdup(r[1]);
372	e->mime = cm_strdup(r[2]);
373	}
374	} else if(cm_strcaseequ(r[0], "Icon")) {
375	if(r[1] == NULL) {
376	cm_log("Config", "Missing MIME at line %d", ln);
377	stop = 1;
378	} else if(r[2] == NULL) {
379	cm_log("Config", "Missing path at line %d", ln);
380	stop = 1;
381	} else {
382	struct tw_icon_entry* e = &current->icons[current->icon_count++];
383	e->mime = cm_strdup(r[1]);
384	e->icon = cm_strdup(r[2]);
385	}
386	} else if(cm_strcaseequ(r[0], "LoadModule")) {
387	for(i = 1; r[i] != NULL; i++) {
388	void* mod = tw_module_load(r[i]);
389	if(mod != NULL) {
390	config.modules[config.module_count++] = mod;
391	if(tw_module_init(mod) != 0) {
392	stop = 1;
393	break;
394	}
395	} else {
396	cm_log("Config", "Could not load the module at line %d", ln);
397	stop = 1;
398	break;
399	}
400	}
401	} else if(cm_strcaseequ(r[0], "DirectoryIndex")) {
402	for(i = 1; r[i] != NULL; i++) {
403	current->indexes[current->index_count++] = cm_strdup(r[i]);
404	}
405	} else if(cm_strcaseequ(r[0], "Readme")) {
406	for(i = 1; r[i] != NULL; i++) {
407	current->readmes[current->readme_count++] = cm_strdup(r[i]);
408	}
409	} else {
410	stop = 1;
411	if(r[0] != NULL) {
412	int argc;
413	for(argc = 0; r[argc] != NULL; argc++)
414	;
415	stop = 0;
416	int i;
417	bool called = false;
418	struct tw_tool tools;
419	tw_init_tools(&tools);
420	for(i = 0; i < config.module_count; i++) {
421	tw_mod_config_t mod_config = (tw_mod_config_t)tw_module_symbol(config.modules[i], "mod_config");
422	int resp;
423	if(mod_config != NULL && (resp = mod_config(&tools, r, argc)) == TW_CONFIG_PARSED) {
424	called = true;
425	break;
426	}
427	if(resp == TW_CONFIG_ERROR) {
428	stop = 1;
429	called = true;
430	break;
431	}
432	}
433	if(!called) {
434	cm_log("Config", "Unknown directive `%s' at line %d", r[0], ln);
435	stop = 1;
436	}
437	}
438	}
439	for(i = 0; r[i] != NULL; i++) free(r[i]);
440	free(r);
441	}
442	free(l);
443	free(line);
444	line = malloc(1);
445	line[0] = 0;
446	if(c <= 0) break;
447	} else if(cbuf[0] != '\r') {
448	char* tmp = line;
449	line = cm_strcat(tmp, cbuf);
450	free(tmp);
451	}
452	}
453	free(line);
454	fclose(f);
455	return stop;
456	} else {
457	cm_log("Config", "Could not open the file");
458	return 1;
459	}
460	}

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source: Main/trunk/Server/config.c@ 161

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