source: Main/trunk/Server/server.c@ 72

Last change on this file since 72 was 72, checked in by Nishi, on Sep 19, 2024 at 6:30:51 PM

decrement instead of increment
  • Property svn:keywords set to Id
File size: 22.0 KB
Line 
1/* $Id: server.c 72 2024-09-19 09:30:51Z nishi $ */
2
3#define SOURCE
4
5#include "../config.h"
6
7#include "tw_server.h"
8
9#ifndef NO_SSL
10#include "tw_ssl.h"
11#endif
12
13#include "tw_config.h"
14#include "tw_http.h"
15#include "tw_module.h"
16#include "tw_version.h"
17
18#include <unistd.h>
19#include <string.h>
20#include <stdbool.h>
21#include <stdarg.h>
22#include <stdio.h>
23#include <stdlib.h>
24#include <sys/stat.h>
25#include <time.h>
26
27#include <cm_string.h>
28#include <cm_log.h>
29#include <cm_dir.h>
30
31#ifdef __MINGW32__
32#include <winsock2.h>
33#include <process.h>
34#include <windows.h>
35
36#include "strptime.h"
37#else
38#include <sys/select.h>
39#include <sys/socket.h>
40#include <arpa/inet.h>
41#include <netinet/in.h>
42#include <netinet/tcp.h>
43#endif
44
45extern struct tw_config config;
46extern char tw_server[];
47
48fd_set fdset;
49int sockcount = 0;
50
51SOCKADDR addresses[MAX_PORTS];
52int sockets[MAX_PORTS];
53
54#ifdef __MINGW32__
55const char* reserved_names[] = {"CON", "PRN", "AUX", "NUL", "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9", "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9"};
56#endif
57
58/* https://qiita.com/gyu-don/items/5a640c6d2252a860c8cd */
59int tw_wildcard_match(const char* wildcard, const char* target) {
60 const char *pw = wildcard, *pt = target;
61
62 while(1) {
63 if(*pt == 0) {
64 while(*pw == '*') pw++;
65 return *pw == 0;
66 } else if(*pw == 0) {
67 return 0;
68 } else if(*pw == '*') {
69 return *(pw + 1) == 0 || tw_wildcard_match(pw, pt + 1) || tw_wildcard_match(pw + 1, pt);
70 } else if(*pw == '?' || (*pw == *pt)) {
71 pw++;
72 pt++;
73 continue;
74 } else {
75 return 0;
76 }
77 }
78}
79
80void close_socket(int sock) {
81#ifdef __MINGW32__
82 closesocket(sock);
83#else
84 close(sock);
85#endif
86}
87
88int tw_server_init(void) {
89 int i;
90#ifdef __MINGW32__
91 WSADATA wsa;
92 WSAStartup(MAKEWORD(2, 0), &wsa);
93#endif
94 for(i = 0; config.ports[i] != -1; i++)
95 ;
96 sockcount = i;
97 for(i = 0; config.ports[i] != -1; i++) {
98#ifdef NO_IPV6
99 int sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
100#else
101 int sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP);
102#endif
103#ifdef __MINGW32__
104 if(sock == INVALID_SOCKET)
105#else
106 if(sock < 0)
107#endif
108 {
109 cm_log("Server", "Socket creation failure");
110 return 1;
111 }
112 int yes = 1;
113 if(setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*)&yes, sizeof(yes)) < 0) {
114 close_socket(sock);
115 cm_log("Server", "setsockopt failure (reuseaddr)");
116 return 1;
117 }
118 if(setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void*)&yes, sizeof(yes)) < 0) {
119 close_socket(sock);
120 cm_log("Server", "setsockopt failure (nodelay)");
121 return 1;
122 }
123#ifndef NO_IPV6
124 int no = 0;
125 if(setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, (void*)&no, sizeof(no)) < 0) {
126 close_socket(sock);
127 cm_log("Server", "setsockopt failure (IPv6)");
128 return 1;
129 }
130#endif
131 memset(&addresses[i], 0, sizeof(addresses[i]));
132#ifdef NO_IPV6
133 addresses[i].sin_family = AF_INET;
134 addresses[i].sin_addr.s_addr = INADDR_ANY;
135 addresses[i].sin_port = htons(config.ports[i]);
136#else
137 addresses[i].sin6_family = AF_INET6;
138 addresses[i].sin6_addr = in6addr_any;
139 addresses[i].sin6_port = htons(config.ports[i]);
140#endif
141 if(bind(sock, (struct sockaddr*)&addresses[i], sizeof(addresses[i])) < 0) {
142 close_socket(sock);
143 cm_log("Server", "Bind failure");
144 return 1;
145 }
146 if(listen(sock, 128) < 0) {
147 close_socket(sock);
148 cm_log("Server", "Listen failure");
149 return 1;
150 }
151 sockets[i] = sock;
152 }
153 return 0;
154}
155
156size_t tw_read(SSL* ssl, int s, void* data, size_t len) {
157#ifndef NO_SSL
158 if(ssl == NULL) {
159 return recv(s, data, len, 0);
160 } else {
161 return SSL_read(ssl, data, len);
162 }
163#else
164 return recv(s, data, len, 0);
165#endif
166}
167
168size_t tw_write(SSL* ssl, int s, void* data, size_t len) {
169#ifndef NO_SSL
170 if(ssl == NULL) {
171 return send(s, data, len, 0);
172 } else {
173 return SSL_write(ssl, data, len);
174 }
175#else
176 return send(s, data, len, 0);
177#endif
178}
179
180#define ERROR_HTML \
181 "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n" \
182 "<html>\n" \
183 " <head>\n" \
184 " <title>%s</title>\n" \
185 " </head>\n" \
186 " <body>\n" \
187 " <h1>%s</h1>\n" \
188 " <hr>\n" \
189 " ", \
190 address, \
191 "\n" \
192 " </body>\n" \
193 "</html>\n"
194
195void _tw_process_page(SSL* ssl, int sock, const char* status, const char* type, FILE* f, const unsigned char* doc, size_t size, char** headers, time_t mtime, time_t cmtime) {
196 char construct[512];
197 if(mtime != 0 && cmtime != 0 && mtime <= cmtime) {
198 status = "304 Not Modified";
199 type = NULL;
200 size = 0;
201 headers = NULL;
202 f = NULL;
203 doc = NULL;
204 }
205 sprintf(construct, "%llu", (unsigned long long)size);
206 tw_write(ssl, sock, "HTTP/1.1 ", 9);
207 tw_write(ssl, sock, (char*)status, strlen(status));
208 tw_write(ssl, sock, "\r\n", 2);
209 if(type != NULL) {
210 tw_write(ssl, sock, "Content-Type: ", 7 + 5 + 2);
211 tw_write(ssl, sock, (char*)type, strlen(type));
212 tw_write(ssl, sock, "\r\n", 2);
213 }
214 tw_write(ssl, sock, "Server: ", 6 + 2);
215 tw_write(ssl, sock, tw_server, strlen(tw_server));
216 tw_write(ssl, sock, "\r\n", 2);
217 if(size != 0) {
218 tw_write(ssl, sock, "Content-Length: ", 7 + 7 + 2);
219 tw_write(ssl, sock, construct, strlen(construct));
220 tw_write(ssl, sock, "\r\n", 2);
221 if(mtime != 0) {
222 struct tm* tm = gmtime(&mtime);
223 char date[513];
224 strftime(date, 512, "%a, %d %b %Y %H:%M:%S GMT", tm);
225 tw_write(ssl, sock, "Last-Modified: ", 5 + 8 + 2);
226 tw_write(ssl, sock, date, strlen(date));
227 tw_write(ssl, sock, "\r\n", 2);
228 }
229 }
230 int i;
231 if(headers != NULL) {
232 for(i = 0; headers[i] != NULL; i += 2) {
233 tw_write(ssl, sock, headers[i], strlen(headers[i]));
234 tw_write(ssl, sock, ": ", 2);
235 tw_write(ssl, sock, headers[i + 1], strlen(headers[i + 1]));
236 tw_write(ssl, sock, "\r\n", 2);
237 }
238 }
239 tw_write(ssl, sock, "\r\n", 2);
240 if(doc == NULL && f == NULL) return;
241 size_t incr = 0;
242 while(1) {
243 if(f != NULL) {
244 char buffer[128];
245 fread(buffer, size < 128 ? size : 128, 1, f);
246 tw_write(ssl, sock, buffer, size < 128 ? size : 128);
247 } else {
248 tw_write(ssl, sock, (unsigned char*)doc + incr, size < 128 ? size : 128);
249 }
250 incr += 128;
251 if(size <= 128) break;
252 size -= 128;
253 }
254}
255
256void tw_process_page(SSL* ssl, int sock, const char* status, const char* type, FILE* f, const unsigned char* doc, size_t size, time_t mtime, time_t cmtime) { _tw_process_page(ssl, sock, status, type, f, doc, size, NULL, mtime, cmtime); }
257
258const char* tw_http_status(int code) {
259 if(code == 200) {
260 return "200 OK";
261 } else if(code == 308) {
262 return "308 Permanent Redirect";
263 } else if(code == 400) {
264 return "400 Bad Request";
265 } else if(code == 401) {
266 return "401 Unauthorized";
267 } else if(code == 403) {
268 return "403 Forbidden";
269 } else if(code == 404) {
270 return "404 Not Found";
271 } else {
272 return "400 Bad Request";
273 }
274}
275
276char* tw_http_default_error(int code, char* name, int port) {
277 char address[1024];
278 sprintf(address, "<address>%s Server at %s Port %d</address>", tw_server, name, port);
279
280 char* st = cm_strdup(tw_http_status(code));
281 char* st2;
282 int i;
283 for(i = 0; st[i] != 0; i++) {
284 if(st[i] == ' ') {
285 st2 = cm_strdup(st + i + 1);
286 break;
287 }
288 }
289 char* buffer = malloc(4096);
290 char* str = cm_strcat3(ERROR_HTML);
291 sprintf(buffer, str, st, st2);
292 free(str);
293 free(st);
294 return buffer;
295}
296
297void tw_http_error(SSL* ssl, int sock, int error, char* name, int port) {
298 char* str = tw_http_default_error(error, name, port);
299 tw_process_page(ssl, sock, tw_http_status(error), "text/html", NULL, str, strlen(str), 0, 0);
300 free(str);
301}
302
303void addstring(char** str, const char* add, ...) {
304 int i;
305 char cbuf[2];
306 cbuf[1] = 0;
307 va_list va;
308 va_start(va, add);
309 for(i = 0; add[i] != 0; i++) {
310 cbuf[0] = add[i];
311 if(add[i] == '%') {
312 i++;
313 if(add[i] == 's') {
314 char* tmp = *str;
315 *str = cm_strcat(tmp, va_arg(va, const char*));
316 free(tmp);
317 } else if(add[i] == 'h') {
318 char* h = cm_html_escape(va_arg(va, const char*));
319 char* tmp = *str;
320 *str = cm_strcat(tmp, h);
321 free(tmp);
322 free(h);
323 } else if(add[i] == 'l') {
324 char* h = cm_url_escape(va_arg(va, const char*));
325 char* tmp = *str;
326 *str = cm_strcat(tmp, h);
327 free(tmp);
328 free(h);
329 } else if(add[i] == 'd') {
330 int n = va_arg(va, int);
331 char* h = malloc(512);
332 sprintf(h, "%d", n);
333 char* tmp = *str;
334 *str = cm_strcat(tmp, h);
335 free(tmp);
336 free(h);
337 } else if(add[i] == '%') {
338 char* tmp = *str;
339 *str = cm_strcat(tmp, "%");
340 free(tmp);
341 }
342 } else {
343 char* tmp = *str;
344 *str = cm_strcat(tmp, cbuf);
345 free(tmp);
346 }
347 }
348}
349
350char* tw_get_mime(const char* ext, struct tw_config_entry* vhost_entry) {
351 char* mime = "application/octet-stream";
352 if(ext == NULL) return mime;
353 bool set = false;
354 int i;
355 for(i = 0; i < vhost_entry->mime_count; i++) {
356 if(strcmp(vhost_entry->mimes[i].ext, "all") == 0 || (ext != NULL && tw_wildcard_match(vhost_entry->mimes[i].ext, ext))) {
357 mime = vhost_entry->mimes[i].mime;
358 set = true;
359 }
360 }
361 if(!set) {
362 for(i = 0; i < config.root.mime_count; i++) {
363 if(strcmp(config.root.mimes[i].ext, "all") == 0 || (ext != NULL && tw_wildcard_match(config.root.mimes[i].ext, ext))) {
364 mime = config.root.mimes[i].mime;
365 }
366 }
367 }
368 return mime;
369}
370
371char* tw_get_icon(const char* mime, struct tw_config_entry* vhost_entry) {
372 char* icon = "";
373 if(mime == NULL) return "";
374 bool set = false;
375 int i;
376 for(i = 0; i < vhost_entry->icon_count; i++) {
377 if(strcmp(vhost_entry->icons[i].mime, "all") == 0 || (mime != NULL && tw_wildcard_match(vhost_entry->icons[i].mime, mime))) {
378 icon = vhost_entry->icons[i].icon;
379 set = true;
380 }
381 }
382 if(!set) {
383 for(i = 0; i < config.root.icon_count; i++) {
384 if(strcmp(config.root.icons[i].mime, "all") == 0 || (mime != NULL && tw_wildcard_match(config.root.icons[i].mime, mime))) {
385 icon = config.root.icons[i].icon;
386 }
387 }
388 }
389 return icon;
390}
391
392#ifdef __MINGW32__
393struct pass_entry {
394 int sock;
395 int port;
396 bool ssl;
397 SOCKADDR addr;
398};
399
400unsigned int WINAPI tw_server_pass(void* ptr) {
401 int sock = ((struct pass_entry*)ptr)->sock;
402 bool ssl = ((struct pass_entry*)ptr)->ssl;
403 int port = ((struct pass_entry*)ptr)->port;
404 SOCKADDR addr = ((struct pass_entry*)ptr)->addr;
405 free(ptr);
406#else
407void tw_server_pass(int sock, bool ssl, int port, SOCKADDR addr) {
408#endif
409 char* name = config.hostname;
410
411#ifndef NO_SSL
412 SSL_CTX* ctx = NULL;
413 SSL* s = NULL;
414 bool sslworks = false;
415 if(ssl) {
416 ctx = tw_create_ssl_ctx(port);
417 s = SSL_new(ctx);
418 SSL_set_fd(s, sock);
419 if(SSL_accept(s) <= 0) goto cleanup;
420 sslworks = true;
421 }
422#else
423 void* s = NULL;
424#endif
425 struct tw_http_request req;
426 struct tw_http_response res;
427 struct tw_tool tools;
428 res._processed = false;
429 tw_init_tools(&tools);
430 int ret = tw_http_parse(s, sock, &req);
431 if(ret == 0) {
432 char* vhost = cm_strdup(config.hostname);
433 int i;
434 time_t cmtime = 0;
435 if(req.headers != NULL) {
436 for(i = 0; req.headers[i] != NULL; i += 2) {
437 if(cm_strcaseequ(req.headers[i], "Host")) {
438 free(vhost);
439 vhost = cm_strdup(req.headers[i + 1]);
440 } else if(cm_strcaseequ(req.headers[i], "If-Modified-Since")) {
441 struct tm tm;
442 strptime(req.headers[i + 1], "%a, %d %b %Y %H:%M:%S GMT", &tm);
443#ifdef __MINGW32__
444 time_t t = 0;
445 struct tm* btm = localtime(&t);
446 cmtime = mktime(&tm);
447 cmtime -= (btm->tm_hour * 60 + btm->tm_min) * 60;
448#else
449 cmtime = timegm(&tm);
450#endif
451 }
452 }
453 }
454 cm_log("Server", "Host is %s", vhost);
455 int port = s == NULL ? 80 : 443;
456 char* host = cm_strdup(vhost);
457 for(i = 0; vhost[i] != 0; i++) {
458 if(vhost[i] == ':') {
459 host[i] = 0;
460 port = atoi(host + i + 1);
461 break;
462 }
463 }
464 cm_log("Server", "Hostname is `%s', port is `%d'", host, port);
465 struct tw_config_entry* vhost_entry = tw_vhost_match(host, port);
466 for(i = 0; i < config.module_count; i++) {
467 tw_mod_request_t mod_req = (tw_mod_request_t)tw_module_symbol(config.modules[i], "mod_request");
468 if(mod_req != NULL) {
469 int ret = mod_req(&tools, &req, &res);
470 int co = ret & 0xff;
471 if(co == _TW_MODULE_PASS) continue;
472 if(co == _TW_MODULE_STOP) {
473 res._processed = true;
474 break;
475 }
476 if(co == _TW_MODULE_ERROR) {
477 tw_http_error(s, sock, (ret & 0xffff00) >> 8, name, port);
478 break;
479 }
480 }
481 }
482 if(!res._processed) {
483 cm_log("Server", "Document root is %s", vhost_entry->root == NULL ? "not set" : vhost_entry->root);
484 char* path = cm_strcat(vhost_entry->root == NULL ? "" : vhost_entry->root, req.path);
485 cm_log("Server", "Filesystem path is %s", path);
486 bool rej = false;
487#ifdef __MINGW32__
488 char* rpath = cm_strdup(path);
489 for(i = strlen(rpath) - 1; i >= 0; i--) {
490 if(rpath[i] != ':') {
491 break;
492 }
493 rpath[i] = 0;
494 }
495 for(i = 0; i < sizeof(reserved_names) / sizeof(reserved_names[0]); i++) {
496 char* n = cm_strcat("/", reserved_names[i]);
497 if(cm_nocase_endswith(rpath, n)) {
498 tw_http_error(s, sock, 403, name, port);
499 free(n);
500 rej = true;
501 cm_log("Server", "XP Patch ; rejecting access to device");
502 break;
503 }
504 free(n);
505 }
506 free(rpath);
507#endif
508 struct stat st;
509 if(!rej && stat(path, &st) == 0) {
510 if(!tw_permission_allowed(path, addr, req, vhost_entry)) {
511 tw_http_error(s, sock, 403, name, port);
512 } else if(S_ISDIR(st.st_mode)) {
513 if(req.path[strlen(req.path) - 1] != '/') {
514 cm_log("Server", "Accessing directory without the slash at the end");
515 char* headers[3] = {"Location", cm_strcat(req.path, "/"), NULL};
516 _tw_process_page(s, sock, tw_http_status(308), NULL, NULL, NULL, 0, headers, 0, 0);
517 free(headers[1]);
518 } else {
519 char** indexes = vhost_entry->index_count == 0 ? config.root.indexes : vhost_entry->indexes;
520 int index_count = vhost_entry->index_count == 0 ? config.root.index_count : vhost_entry->index_count;
521 bool found = false;
522 for(i = 0; i < index_count; i++) {
523 char* p = cm_strcat3(path, "/", indexes[i]);
524 FILE* f = fopen(p, "rb");
525 if(f != NULL) {
526 char* ext = NULL;
527 int j;
528 for(j = strlen(p) - 1; j >= 0; j--) {
529 if(p[j] == '.') {
530 ext = cm_strdup(p + j);
531 break;
532 } else if(p[j] == '/') {
533 break;
534 }
535 }
536 struct stat st;
537 stat(p, &st);
538 char* mime = tw_get_mime(ext, vhost_entry);
539 tw_process_page(s, sock, tw_http_status(200), mime, f, NULL, st.st_size, 0, 0);
540 fclose(f);
541 free(p);
542 found = true;
543 break;
544 }
545 free(p);
546 }
547 if(!found) {
548 char* str = malloc(1);
549 str[0] = 0;
550 char** items = cm_scandir(path);
551 addstring(&str, "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n");
552 addstring(&str, "<html>\n");
553 addstring(&str, " <head>\n");
554 addstring(&str, " <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">\n");
555 addstring(&str, " <title>Index of %h</title>\n", req.path);
556 addstring(&str, " </head>\n");
557 addstring(&str, " <body>\n");
558 addstring(&str, " <h1>Index of %h</h1>\n", req.path);
559 addstring(&str, " <hr>\n");
560 addstring(&str, " <table border=\"0\">\n");
561 addstring(&str, " <tr>\n");
562 addstring(&str, " <th></th>\n");
563 addstring(&str, " <th>Filename</th>\n");
564 addstring(&str, " <th>MIME</th>\n");
565 addstring(&str, " <th>Size</th>\n");
566 addstring(&str, " </tr>\n");
567 int readme = -1;
568 char** readmes = vhost_entry->readme_count == 0 ? config.root.readmes : vhost_entry->readmes;
569 int readme_count = vhost_entry->readme_count == 0 ? config.root.readme_count : vhost_entry->readme_count;
570 if(items != NULL) {
571 int phase = 0;
572 doit:
573 for(i = 0; items[i] != NULL; i++) {
574 int j;
575 char* fpth = cm_strcat3(path, "/", items[i]);
576 struct stat s;
577 char size[512];
578 size[0] = 0;
579 stat(fpth, &s);
580 if(phase == 0 && !S_ISDIR(s.st_mode)) {
581 free(fpth);
582 continue;
583 } else if(phase == 1 && S_ISDIR(s.st_mode)) {
584 free(fpth);
585 continue;
586 }
587 if(readme == -1) {
588 for(j = 0; j < readme_count; j++) {
589 if(strcmp(items[i], readmes[j]) == 0) {
590 readme = j;
591 break;
592 }
593 }
594 if(readme != -1) {
595 free(fpth);
596 continue;
597 }
598 }
599 if(s.st_size < 1024ULL) {
600 sprintf(size, "%d", (int)s.st_size);
601 } else if(s.st_size < 1024ULL * 1024) {
602 sprintf(size, "%.1fK", (double)s.st_size / 1024);
603 } else if(s.st_size < 1024ULL * 1024 * 1024) {
604 sprintf(size, "%.1fM", (double)s.st_size / 1024 / 1024);
605 } else if(s.st_size < 1024ULL * 1024 * 1024 * 1024) {
606 sprintf(size, "%.1fG", (double)s.st_size / 1024 / 1024 / 1024);
607 } else if(s.st_size < 1024ULL * 1024 * 1024 * 1024 * 1024) {
608 sprintf(size, "%.1fT", (double)s.st_size / 1024 / 1024 / 1024 / 1024);
609 }
610
611 free(fpth);
612
613 char* ext = NULL;
614 for(j = strlen(items[i]) - 1; j >= 0; j--) {
615 if(items[i][j] == '.') {
616 ext = cm_strdup(items[i] + j);
617 break;
618 } else if(items[i][j] == '/') {
619 break;
620 }
621 }
622 char* showmime = "";
623 char* mime = tw_get_mime(ext, vhost_entry);
624 if(strcmp(items[i], "../") == 0) {
625 mime = "misc/parent";
626 size[0] = 0;
627 } else if(items[i][strlen(items[i]) - 1] == '/') {
628 mime = "misc/dir";
629 size[0] = 0;
630 } else {
631 showmime = mime;
632 }
633 char* icon = tw_get_icon(mime, vhost_entry);
634 if(ext != NULL) free(ext);
635 char* itm = cm_strdup(items[i]);
636 if(strlen(itm) >= 32) {
637 if(itm[strlen(itm) - 1] == '/') {
638 itm[31] = 0;
639 itm[30] = '/';
640 itm[29] = '.';
641 itm[28] = '.';
642 itm[27] = '.';
643 } else {
644 itm[31] = 0;
645 itm[30] = '.';
646 itm[29] = '.';
647 itm[28] = '.';
648 }
649 }
650 addstring(&str, "<tr>\n");
651 addstring(&str, " <td><img src=\"%s\" alt=\"icon\"></td>\n", icon);
652 addstring(&str, " <td><a href=\"%l\"><code>%h</code></a></td>\n", items[i], itm);
653 addstring(&str, " <td><code> %h </code></td>\n", showmime);
654 addstring(&str, " <td><code> %s </code></td>\n", size);
655 addstring(&str, "</tr>\n");
656 free(itm);
657 }
658 phase++;
659 if(phase != 2) goto doit;
660 for(i = 0; items[i] != NULL; i++) free(items[i]);
661 free(items);
662 }
663 addstring(&str, " </table>\n");
664 if(readme != -1) {
665 addstring(&str, "<hr>\n");
666 char* fpth = cm_strcat3(path, "/", readmes[readme]);
667 struct stat s;
668 stat(fpth, &s);
669 FILE* fr = fopen(fpth, "r");
670 if(fr != NULL) {
671 char* rmbuf = malloc(s.st_size + 1);
672 rmbuf[s.st_size] = 0;
673 fread(rmbuf, s.st_size, 1, fr);
674 addstring(&str, "<pre><code>%h</code></pre>\n", rmbuf);
675 fclose(fr);
676 free(rmbuf);
677 }
678 free(fpth);
679 }
680 addstring(&str, " <hr>\n");
681 addstring(&str, " <address>%s Server at %s Port %d</address>\n", tw_server, name, port);
682 addstring(&str, " </body>\n");
683 addstring(&str, "</html>\n");
684 tw_process_page(s, sock, tw_http_status(200), "text/html", NULL, str, strlen(str), 0, 0);
685 free(str);
686 }
687 }
688 } else {
689 char* ext = NULL;
690 for(i = strlen(req.path) - 1; i >= 0; i--) {
691 if(req.path[i] == '.') {
692 ext = cm_strdup(req.path + i);
693 break;
694 } else if(req.path[i] == '/') {
695 break;
696 }
697 }
698 char* mime = tw_get_mime(ext, vhost_entry);
699 if(ext != NULL) free(ext);
700 FILE* f = fopen(path, "rb");
701 tw_process_page(s, sock, tw_http_status(200), mime, f, NULL, st.st_size, st.st_mtime, cmtime);
702 fclose(f);
703 }
704 } else {
705 tw_http_error(s, sock, 404, name, port);
706 }
707 free(path);
708 }
709 free(vhost);
710 free(host);
711 } else if(ret == -1) {
712 } else {
713 tw_http_error(s, sock, 400, name, port);
714 }
715 tw_free_request(&req);
716cleanup:
717#ifndef NO_SSL
718 if(sslworks) {
719 SSL_shutdown(s);
720 }
721 SSL_free(s);
722#endif
723 close_socket(sock);
724#ifdef __MINGW32__
725 _endthreadex(0);
726#endif
727 ;
728}
729
730#ifdef SERVICE
731extern SERVICE_STATUS status;
732extern SERVICE_STATUS_HANDLE status_handle;
733#endif
734
735#ifdef __MINGW32__
736struct thread_entry {
737 HANDLE handle;
738 bool used;
739};
740#endif
741
742void tw_server_loop(void) {
743 struct timeval tv;
744 int i;
745#ifdef __MINGW32__
746 struct thread_entry threads[2048];
747 for(i = 0; i < sizeof(threads) / sizeof(threads[0]); i++) {
748 threads[i].used = false;
749 }
750#endif
751 while(1) {
752 FD_ZERO(&fdset);
753 for(i = 0; i < sockcount; i++) {
754 FD_SET(sockets[i], &fdset);
755 }
756 tv.tv_sec = 1;
757 tv.tv_usec = 0;
758 int ret = select(FD_SETSIZE, &fdset, NULL, NULL, &tv);
759 if(ret == -1) {
760 break;
761 } else if(ret == 0) {
762#ifdef __MINGW32__
763 for(i = 0; i < sizeof(threads) / sizeof(threads[0]); i++) {
764 if(threads[i].used) {
765 DWORD ex;
766 GetExitCodeThread(threads[i].handle, &ex);
767 if(ex != STILL_ACTIVE) {
768 CloseHandle(threads[i].handle);
769 threads[i].used = false;
770 }
771 }
772 }
773#endif
774#ifdef SERVICE
775 if(status.dwCurrentState == SERVICE_STOP_PENDING) {
776 break;
777 }
778#endif
779 } else if(ret > 0) {
780 /* connection */
781 int i;
782 for(i = 0; i < sockcount; i++) {
783 if(FD_ISSET(sockets[i], &fdset)) {
784 SOCKADDR claddr;
785 int clen = sizeof(claddr);
786 int sock = accept(sockets[i], (struct sockaddr*)&claddr, &clen);
787 cm_log("Server", "New connection accepted");
788#ifdef __MINGW32__
789 struct pass_entry* e = malloc(sizeof(*e));
790 e->sock = sock;
791 e->ssl = config.ports[i] & (1ULL << 32);
792 e->port = config.ports[i];
793 e->addr = claddr;
794 int j;
795 for(j = 0; j < sizeof(threads) / sizeof(threads[0]); j++) {
796 if(threads[j].used) {
797 DWORD ex;
798 GetExitCodeThread(threads[j].handle, &ex);
799 if(ex != STILL_ACTIVE) {
800 CloseHandle(threads[j].handle);
801 threads[j].used = false;
802 }
803 }
804 }
805 for(j = 0; j < sizeof(threads) / sizeof(threads[0]); j++) {
806 if(!threads[j].used) {
807 threads[j].handle = (HANDLE)_beginthreadex(NULL, 0, tw_server_pass, e, 0, NULL);
808 threads[j].used = true;
809 break;
810 }
811 }
812#else
813 pid_t pid = fork();
814 if(pid == 0) {
815 tw_server_pass(sock, config.ports[i] & (1ULL << 32), config.ports[i], claddr);
816 _exit(0);
817 } else {
818 close_socket(sock);
819 }
820#endif
821 }
822 }
823 }
824 }
825}
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