config.c@ 23

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Last change on this file since 23 was 22, checked in by Nishi, on Sep 14, 2024 at 10:25:38 PM
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1	/* $Id: config.c 22 2024-09-14 13:25:38Z 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	config.vhosts[i].sslkey = NULL;
76	config.vhosts[i].sslcert = NULL;
77	config.vhosts[i].root = NULL;
78	}
79	config.root.sslkey = NULL;
80	config.root.sslcert = NULL;
81	config.root.root = NULL;
82	config.root.mime_count = 0;
83	config.root.dir_count = 0;
84	config.root.icon_count = 0;
85	config.vhost_count = 0;
86	config.module_count = 0;
87	config.extension = NULL;
88	config.server_root = cm_strdup(PREFIX);
89	gethostname(config.hostname, 1024);
90	}
91
92	int tw_config_read(const char* path) {
93	cm_log("Config", "Reading %s", path);
94	char cbuf[2];
95	cbuf[1] = 0;
96	int ln = 0;
97	FILE* f = fopen(path, "r");
98	if(f != NULL) {
99	char* line = malloc(1);
100	line[0] = 0;
101	int stop = 0;
102	struct tw_config_entry* current = &config.root;
103	char* vhost = NULL;
104	char* dir = NULL;
105	while(stop == 0) {
106	int c = fread(cbuf, 1, 1, f);
107	if(cbuf[0] == '\n' \|\| c <= 0) {
108	ln++;
109	char* l = cm_trim(line);
110	if(strlen(l) > 0 && l[0] != '#') {
111	char** r = cm_split(l, " \t");
112	int i;
113	if(cm_strcaseequ(r[0], "Include") \|\| cm_strcaseequ(r[0], "IncludeOptional")) {
114	for(i = 1; r[i] != NULL; i++) {
115	if(tw_config_read(r[i]) != 0 && cm_strcaseequ(r[0], "Include")) {
116	stop = 1;
117	break;
118	}
119	}
120	} else if(cm_strcaseequ(r[0], "BeginDirectory")) {
121	if(dir != NULL) {
122	cm_log("Config", "Already in directory section at line %d", ln);
123	stop = 1;
124	} else {
125	if(r[1] == NULL) {
126	cm_log("Config", "Missing directory at line %d", ln);
127	stop = 1;
128	} else {
129	dir = cm_strcat(r[1], r[1][strlen(r[1]) - 1] == '/' ? "" : "/");
130	}
131	}
132	} else if(cm_strcaseequ(r[0], "EndDirectory")) {
133	if(dir == NULL) {
134	cm_log("Config", "Not in directory section at line %d", ln);
135	stop = 1;
136	} else {
137	free(dir);
138	dir = NULL;
139	}
140	} else if(cm_strcaseequ(r[0], "Allow")) {
141	if(dir == NULL) {
142	cm_log("Config", "Not in directory section at line %d", ln);
143	stop = 1;
144	} else {
145	if(r[1] == NULL) {
146	cm_log("Config", "Missing argument at line %d", ln);
147	stop = 1;
148	} else {
149	struct tw_dir_entry* e = &current->dirs[current->dir_count++];
150	e->name = cm_strdup(r[1]);
151	e->dir = cm_strdup(dir);
152	e->type = TW_DIR_ALLOW;
153	}
154	}
155	} else if(cm_strcaseequ(r[0], "Deny")) {
156	if(dir == NULL) {
157	cm_log("Config", "Not in directory section at line %d", ln);
158	stop = 1;
159	} else {
160	if(r[1] == NULL) {
161	cm_log("Config", "Missing argument at line %d", ln);
162	stop = 1;
163	} else {
164	struct tw_dir_entry* e = &current->dirs[current->dir_count++];
165	e->name = cm_strdup(r[1]);
166	e->dir = cm_strdup(dir);
167	e->type = TW_DIR_DENY;
168	}
169	}
170	} else if(cm_strcaseequ(r[0], "BeginVirtualHost")) {
171	if(vhost != NULL) {
172	cm_log("Config", "Already in virtual host section at line %d", ln);
173	stop = 1;
174	} else {
175	if(r[1] == NULL) {
176	cm_log("Config", "Missing virtual host at line %d", ln);
177	stop = 1;
178	} else {
179	vhost = cm_strdup(r[1]);
180	current = &config.vhosts[config.vhost_count++];
181	current->dir_count = 0;
182	current->mime_count = 0;
183	current->icon_count = 0;
184	int i;
185	current->name = cm_strdup(vhost);
186	current->port = -1;
187	for(i = 0; vhost[i] != 0; i++) {
188	if(vhost[i] == ':') {
189	current->name[i] = 0;
190	current->port = atoi(current->name + i + 1);
191	break;
192	}
193	}
194	}
195	}
196	} else if(cm_strcaseequ(r[0], "EndVirtualHost")) {
197	if(vhost == NULL) {
198	cm_log("Config", "Not in virtual host section at line %d", ln);
199	stop = 1;
200	} else {
201	free(vhost);
202	vhost = NULL;
203	current = &config.root;
204	}
205	} else if(cm_strcaseequ(r[0], "Listen") \|\| cm_strcaseequ(r[0], "ListenSSL")) {
206	for(i = 1; r[i] != NULL; i++) {
207	uint64_t port = atoi(r[i]);
208	cm_log("Config", "Going to listen at port %d%s", (int)port, cm_strcaseequ(r[0], "ListenSSL") ? " with SSL" : "");
209	if(cm_strcaseequ(r[0], "ListenSSL")) port \|= (1ULL << 32);
210	int j;
211	for(j = 0; config.ports[j] != -1; j++)
212	;
213	config.ports[j] = port;
214	}
215	} else if(cm_strcaseequ(r[0], "SSLKey")) {
216	if(r[1] == NULL) {
217	cm_log("Config", "Missing path at line %d", ln);
218	stop = 1;
219	} else {
220	if(current->sslkey != NULL) free(current->sslkey);
221	current->sslkey = cm_strdup(r[1]);
222	}
223	} else if(cm_strcaseequ(r[0], "SSLCertificate")) {
224	if(r[1] == NULL) {
225	cm_log("Config", "Missing path at line %d", ln);
226	stop = 1;
227	} else {
228	if(current->sslcert != NULL) free(current->sslcert);
229	current->sslcert = cm_strdup(r[1]);
230	}
231	} else if(cm_strcaseequ(r[0], "DocumentRoot")) {
232	if(r[1] == NULL) {
233	cm_log("Config", "Missing path at line %d", ln);
234	stop = 1;
235	} else {
236	if(current->root != NULL) free(current->root);
237	current->root = cm_strdup(strcmp(r[1], "/") == 0 ? "" : r[1]);
238	}
239	} else if(cm_strcaseequ(r[0], "ServerRoot")) {
240	if(r[1] == NULL) {
241	cm_log("Config", "Missing path at line %d", ln);
242	stop = 1;
243	} else {
244	if(config.server_root != NULL) free(config.server_root);
245	config.server_root = cm_strdup(r[1]);
246	}
247	} else if(cm_strcaseequ(r[0], "MIMEType")) {
248	if(r[1] == NULL) {
249	cm_log("Config", "Missing extension at line %d", ln);
250	stop = 1;
251	} else if(r[2] == NULL) {
252	cm_log("Config", "Missing MIME at line %d", ln);
253	stop = 1;
254	} else {
255	struct tw_mime_entry* e = &current->mimes[current->mime_count++];
256	e->ext = cm_strdup(r[1]);
257	e->mime = cm_strdup(r[2]);
258	}
259	} else if(cm_strcaseequ(r[0], "Icon")) {
260	if(r[1] == NULL) {
261	cm_log("Config", "Missing MIME at line %d", ln);
262	stop = 1;
263	} else if(r[2] == NULL) {
264	cm_log("Config", "Missing path at line %d", ln);
265	stop = 1;
266	} else {
267	struct tw_icon_entry* e = &current->icons[current->icon_count++];
268	e->mime = cm_strdup(r[1]);
269	e->icon = cm_strdup(r[2]);
270	}
271	} else if(cm_strcaseequ(r[0], "LoadModule")) {
272	for(i = 1; r[i] != NULL; i++) {
273	void* mod = tw_module_load(r[i]);
274	if(mod != NULL) {
275	config.modules[config.module_count++] = mod;
276	if(tw_module_init(mod) != 0) {
277	stop = 1;
278	break;
279	}
280	} else {
281	stop = 1;
282	break;
283	}
284	}
285	} else {
286	if(r[0] != NULL) {
287	cm_log("Config", "Unknown directive `%s' at line %d", r[0], ln);
288	}
289	stop = 1;
290	}
291	for(i = 0; r[i] != NULL; i++) free(r[i]);
292	free(r);
293	}
294	free(l);
295	free(line);
296	line = malloc(1);
297	line[0] = 0;
298	if(c <= 0) break;
299	} else if(cbuf[0] != '\r') {
300	char* tmp = line;
301	line = cm_strcat(tmp, cbuf);
302	free(tmp);
303	}
304	}
305	free(line);
306	fclose(f);
307	return stop;
308	} else {
309	cm_log("Config", "Could not open the file");
310	return 1;
311	}
312	}

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source: Main/trunk/Server/config.c@ 23

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