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16 nishi 1 
/* $Id: http.c 361 2024-10-17 00:37:10Z nishi $ */
2 
 
3 
#define SOURCE
4 
 
43 nishi 5 
#include "../config.h"
6 
 
16 nishi 7 
#include "tw_http.h"
8 
 
9 
#include "tw_server.h"
10 
 
11 
#include <cm_log.h>
12 
#include <cm_string.h>
13 
 
14 
#include <stdbool.h>
15 
#include <stdlib.h>
17 nishi 16 
#include <string.h>
16 nishi 17 
 
312 nishi 18 
#ifdef __OS2__
19 
#include <sys/time.h>
20 
#include <types.h>
21 
#include <tcpustd.h>
22 
#endif
23 
 
359 nishi 24 
#if defined(__MINGW32__) || defined(_MSC_VER) || defined(__BORLANDC__) || (defined(__WATCOMC__) && !defined(__OS2__) && !defined(__NETWARE__) && !defined(__DOS__))
240 nishi 25 
#ifdef USE_WINSOCK1
26 
#include <winsock.h>
27 
#else
17 nishi 28 
#include <winsock2.h>
240 nishi 29 
#endif
315 nishi 30 
#elif defined(__NETWARE__)
361 nishi 31 
#include <sys/bsdskt.h>
315 nishi 32 
#include <sys/socket.h>
17 nishi 33 
#else
118 nishi 34 
#ifdef USE_POLL
187 nishi 35 
#ifdef __PPU__
36 
#include <net/poll.h>
37 
#else
118 nishi 38 
#include <poll.h>
187 nishi 39 
#endif
118 nishi 40 
#else
336 nishi 41 
#ifdef __NeXT__
42 
#include <sys/socket.h>
338 nishi 43 
#include <time.h>
337 nishi 44 
#include <sys/time.h>
336 nishi 45 
#else
17 nishi 46 
#include <sys/select.h>
47 
#endif
118 nishi 48 
#endif
335 nishi 49 
#endif
17 nishi 50 
 
16 nishi 51 
void tw_free_request(struct tw_http_request* req) {
52 
	if(req->method != NULL) free(req->method);
53 
	if(req->path != NULL) free(req->path);
20 nishi 54 
	if(req->query != NULL) free(req->query);
16 nishi 55 
	if(req->headers != NULL) {
56 
		int i;
57 
		for(i = 0; req->headers[i] != NULL; i++) free(req->headers[i]);
58 
		free(req->headers);
59 
	}
60 
	if(req->body != NULL) free(req->body);
61 
	if(req->version != NULL) free(req->version);
64 nishi 62 
 
63 
	req->method = NULL;
64 
	req->path = NULL;
65 
	req->query = NULL;
66 
	req->headers = NULL;
67 
	req->body = NULL;
68 
	req->version = NULL;
16 nishi 69 
}
70 
 
71 
int tw_http_parse(SSL* ssl, int sock, struct tw_http_request* req) {
72 
	char buffer[512];
73 
	char cbuf[2];
74 
	int phase = 0;
212 nishi 75 
	char* header;
76 
	int nl;
294 nishi 77 
	bool bad;
118 nishi 78 
 
79 
#ifdef USE_POLL
80 
	struct pollfd pollfds[1];
81 
	pollfds[0].fd = sock;
82 
	pollfds[0].events = POLLIN | POLLPRI;
83 
#else
16 nishi 84 
	fd_set fds;
118 nishi 85 
#endif
16 nishi 86 
 
294 nishi 87 
	bad = false;
16 nishi 88 
 
89 
	cbuf[1] = 0;
90 
 
91 
	req->method = NULL;
92 
	req->path = NULL;
20 nishi 93 
	req->query = NULL;
16 nishi 94 
	req->headers = NULL;
95 
	req->body = NULL;
96 
	req->version = NULL;
97 
 
212 nishi 98 
	header = malloc(1);
16 nishi 99 
	header[0] = 0;
212 nishi 100 
	nl = 0;
16 nishi 101 
 
102 
	while(1) {
212 nishi 103 
		int i;
104 
		int len;
213 nishi 105 
		int n;
118 nishi 106 
#ifndef USE_POLL
212 nishi 107 
		struct timeval tv;
16 nishi 108 
		FD_ZERO(&fds);
109 
		FD_SET(sock, &fds);
110 
		tv.tv_sec = 5;
111 
		tv.tv_usec = 0;
118 nishi 112 
#endif
43 nishi 113 
#ifndef NO_SSL
23 nishi 114 
		if(ssl == NULL || !SSL_has_pending(ssl)) {
43 nishi 115 
#endif
118 nishi 116 
#ifdef USE_POLL
212 nishi 117 
			n = poll(pollfds, 1, 5000);
118 nishi 118 
#else
88 nishi 119 
#ifdef __HAIKU__
212 nishi 120 
		n = select(32, &fds, NULL, NULL, &tv);
88 nishi 121 
#else
212 nishi 122 
		n = select(FD_SETSIZE, &fds, NULL, NULL, &tv);
88 nishi 123 
#endif
118 nishi 124 
#endif
22 nishi 125 
			if(n <= 0) {
147 nishi 126 
				cm_log("HTTP", "Timeout, disconnecting");
22 nishi 127 
				free(header);
128 
				tw_free_request(req);
129 
				return -1;
130 
			}
43 nishi 131 
#ifndef NO_SSL
22 nishi 132 
		}
43 nishi 133 
#endif
212 nishi 134 
		len = tw_read(ssl, sock, buffer, 512);
70 nishi 135 
		if(len <= 0) {
64 nishi 136 
			bad = true;
137 
			break;
138 
		}
16 nishi 139 
		for(i = 0; i < len; i++) {
140 
			char c = buffer[i];
141 
			if(phase == 0) {
142 
				if(c == ' ') {
143 
					if(req->method == NULL) {
144 
						tw_free_request(req);
145 
						bad = true;
146 
						goto getout;
147 
					} else {
148 
						phase++;
149 
					}
150 
				} else {
212 nishi 151 
					char* tmp;
16 nishi 152 
					if(req->method == NULL) {
153 
						req->method = malloc(1);
154 
						req->method[0] = 0;
155 
					}
156 
					cbuf[0] = c;
212 nishi 157 
					tmp = req->method;
16 nishi 158 
					req->method = cm_strcat(tmp, cbuf);
159 
					free(tmp);
160 
				}
161 
			} else if(phase == 1) {
162 
				if(c == ' ') {
163 
					if(req->path == NULL) {
164 
						tw_free_request(req);
165 
						bad = true;
166 
						goto getout;
167 
					} else {
168 
						phase++;
169 
					}
170 
				} else {
212 nishi 171 
					char* tmp;
16 nishi 172 
					if(req->path == NULL) {
173 
						req->path = malloc(1);
174 
						req->path[0] = 0;
175 
					}
176 
					cbuf[0] = c;
212 nishi 177 
					tmp = req->path;
16 nishi 178 
					req->path = cm_strcat(tmp, cbuf);
179 
					free(tmp);
180 
				}
181 
			} else if(phase == 2) {
182 
				if(c == '\n') {
183 
					if(req->version == NULL) {
184 
						tw_free_request(req);
185 
						bad = true;
186 
						goto getout;
187 
					} else {
188 
						/* We have Method, Path, Version now */
212 nishi 189 
						int j;
190 
						char* p;
191 
						int incr;
16 nishi 192 
						if(strcmp(req->version, "HTTP/1.1") != 0 && strcmp(req->version, "HTTP/1.0") != 0) {
193 
							cm_log("HTTP", "Bad HTTP Version");
194 
							bad = true;
195 
							goto getout;
196 
						}
197 
 
212 nishi 198 
						p = malloc(1);
16 nishi 199 
						p[0] = 0;
200 
						for(j = 0; req->path[j] != 0; j++) {
212 nishi 201 
							char* tmp;
16 nishi 202 
							if(req->path[j] == '/') {
203 
								cbuf[0] = '/';
204 
								for(; req->path[j] != 0 && req->path[j] == '/'; j++)
205 
									;
206 
								j--;
207 
							} else {
208 
								cbuf[0] = req->path[j];
209 
							}
212 nishi 210 
							tmp = p;
16 nishi 211 
							p = cm_strcat(tmp, cbuf);
212 
							free(tmp);
213 
						}
214 
						free(req->path);
215 
						req->path = p;
216 
 
212 nishi 217 
						incr = 0;
16 nishi 218 
						p = malloc(1);
219 
						p[0] = 0;
220 
						for(j = 0;; j++) {
221 
							if(req->path[j] == '/' || req->path[j] == 0) {
222 
								char oldc = req->path[j];
212 nishi 223 
								char* pth;
16 nishi 224 
								cbuf[0] = oldc;
225 
								req->path[j] = 0;
226 
 
212 nishi 227 
								pth = req->path + incr;
16 nishi 228 
 
229 
								if(strcmp(pth, "..") == 0) {
230 
									int k;
231 
									if(p[strlen(p) - 1] == '/') p[strlen(p) - 1] = 0;
232 
									for(k = strlen(p) - 1; k >= 0; k--) {
233 
										if(p[k] == '/') {
234 
											p[k + 1] = 0;
235 
											break;
236 
										}
237 
									}
238 
									if(strlen(p) == 0) {
239 
										free(p);
240 
										p = cm_strdup("/");
241 
									}
242 
								} else if(strcmp(pth, ".") == 0) {
243 
								} else {
244 
									char* tmp = p;
245 
									p = cm_strcat3(tmp, pth, cbuf);
246 
									free(tmp);
247 
								}
248 
 
249 
								incr = j + 1;
250 
								if(oldc == 0) break;
251 
							}
252 
						}
253 
						free(req->path);
254 
						req->path = p;
255 
 
256 
						cm_log("HTTP", "Request: %s %s %s", req->method, req->path, req->version);
257 
 
258 
						phase++;
259 
					}
260 
				} else if(c != '\r') {
212 nishi 261 
					char* tmp;
16 nishi 262 
					if(req->version == NULL) {
263 
						req->version = malloc(1);
264 
						req->version[0] = 0;
265 
					}
266 
					cbuf[0] = c;
212 nishi 267 
					tmp = req->version;
16 nishi 268 
					req->version = cm_strcat(tmp, cbuf);
269 
					free(tmp);
270 
				}
271 
			} else if(phase == 3) {
272 
				if(c == '\n') {
273 
					nl++;
274 
					if(nl == 2) {
275 
						phase++;
276 
						goto getout;
277 
					} else {
212 nishi 278 
						int j;
16 nishi 279 
						if(req->headers == NULL) {
280 
							req->headers = malloc(sizeof(*req->headers));
281 
							req->headers[0] = NULL;
282 
						}
283 
						for(j = 0; header[j] != 0; j++) {
284 
							if(header[j] == ':') {
212 nishi 285 
								char* kv;
286 
								char* vv;
287 
								char** old;
288 
								int k;
16 nishi 289 
								header[j] = 0;
290 
								j++;
291 
								for(; header[j] != 0 && (header[j] == ' ' || header[j] == '\t'); j++)
292 
									;
212 nishi 293 
								kv = header;
294 
								vv = header + j;
16 nishi 295 
 
212 nishi 296 
								old = req->headers;
16 nishi 297 
								for(k = 0; old[k] != NULL; k++)
298 
									;
299 
								req->headers = malloc(sizeof(*req->headers) * (k + 3));
300 
								for(k = 0; old[k] != NULL; k++) req->headers[k] = old[k];
301 
								req->headers[k] = cm_strdup(kv);
302 
								req->headers[k + 1] = cm_strdup(vv);
303 
								req->headers[k + 2] = NULL;
304 
								free(old);
305 
 
306 
								cm_log("HTTP", "Header: %s: %s", kv, vv);
307 
 
308 
								break;
309 
							}
310 
						}
311 
						free(header);
312 
						header = malloc(1);
313 
						header[0] = 0;
314 
					}
315 
				} else if(c != '\r') {
212 nishi 316 
					char* tmp;
16 nishi 317 
					nl = 0;
318 
					cbuf[0] = c;
212 nishi 319 
					tmp = header;
16 nishi 320 
					header = cm_strcat(tmp, cbuf);
321 
					free(tmp);
322 
				}
323 
			}
324 
		}
325 
	}
326 
getout:
327 
	free(header);
328 
	if(bad) {
329 
		tw_free_request(req);
330 
		return 1;
331 
	}
212 nishi 332 
	{
333 
		char* result = malloc(1);
334 
		int i;
335 
		int j;
336 
		int incr;
337 
		char* p;
338 
		result[0] = 0;
339 
		for(i = 0; req->path[i] != 0; i++) {
340 
			if(req->path[i] == '?') {
341 
				req->path[i] = 0;
342 
				req->query = cm_strdup(req->path + i + 1);
343 
				break;
344 
			}
20 nishi 345 
		}
212 nishi 346 
		for(i = 0; req->path[i] != 0; i++) {
347 
			if(req->path[i] == '%') {
348 
				if(req->path[i + 1] == 0) continue;
349 
				cbuf[0] = cm_hex(req->path + i + 1, 2);
350 
				if(cbuf[0] != '\\') {
351 
					char* tmp = result;
352 
					result = cm_strcat(tmp, cbuf);
353 
					free(tmp);
354 
				}
355 
				i += 2;
356 
			} else if(req->path[i] != '\\') {
357 
				char* tmp;
358 
				cbuf[0] = req->path[i];
359 
				tmp = result;
70 nishi 360 
				result = cm_strcat(tmp, cbuf);
361 
				free(tmp);
362 
			}
20 nishi 363 
		}
212 nishi 364 
		free(req->path);
365 
		req->path = result;
213 nishi 366 
 
212 nishi 367 
		incr = 0;
368 
		p = malloc(1);
369 
		p[0] = 0;
370 
		for(j = 0;; j++) {
371 
			if(req->path[j] == '/' || req->path[j] == 0) {
372 
				char oldc = req->path[j];
373 
				char* pth;
374 
				cbuf[0] = oldc;
375 
				req->path[j] = 0;
213 nishi 376 
 
212 nishi 377 
				pth = req->path + incr;
213 nishi 378 
 
212 nishi 379 
				if(strcmp(pth, "..") == 0) {
380 
					int k;
381 
					if(p[strlen(p) - 1] == '/') p[strlen(p) - 1] = 0;
382 
					for(k = strlen(p) - 1; k >= 0; k--) {
383 
						if(p[k] == '/') {
384 
							p[k + 1] = 0;
385 
							break;
386 
						}
69 nishi 387 
					}
212 nishi 388 
					if(strlen(p) == 0) {
389 
						free(p);
390 
						p = cm_strdup("/");
391 
					}
392 
				} else if(strcmp(pth, ".") == 0) {
393 
				} else {
394 
					char* tmp = p;
395 
					p = cm_strcat3(tmp, pth, cbuf);
396 
					free(tmp);
69 nishi 397 
				}
213 nishi 398 
 
212 nishi 399 
				incr = j + 1;
400 
				if(oldc == 0) break;
69 nishi 401 
			}
402 
		}
212 nishi 403 
		free(req->path);
404 
		req->path = p;
405 
		return 0;
69 nishi 406 
	}
16 nishi 407 
}