Subversion Repositories Tewi

Rev

Rev 312 | Rev 335 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
16 nishi 1 
/* $Id: http.c 315 2024-10-14 10:01:02Z 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 
 
315 nishi 24 
#if defined(__MINGW32__) || defined(_MSC_VER) || defined(__BORLANDC__) || (defined(__WATCOMC__) && !defined(__OS2__) && !defined(__NETWARE__))
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__)
31 
#include <sys/socket.h>
17 nishi 32 
#else
118 nishi 33 
#ifdef USE_POLL
187 nishi 34 
#ifdef __PPU__
35 
#include <net/poll.h>
36 
#else
118 nishi 37 
#include <poll.h>
187 nishi 38 
#endif
118 nishi 39 
#else
17 nishi 40 
#include <sys/select.h>
41 
#endif
118 nishi 42 
#endif
17 nishi 43 
 
16 nishi 44 
void tw_free_request(struct tw_http_request* req) {
45 
	if(req->method != NULL) free(req->method);
46 
	if(req->path != NULL) free(req->path);
20 nishi 47 
	if(req->query != NULL) free(req->query);
16 nishi 48 
	if(req->headers != NULL) {
49 
		int i;
50 
		for(i = 0; req->headers[i] != NULL; i++) free(req->headers[i]);
51 
		free(req->headers);
52 
	}
53 
	if(req->body != NULL) free(req->body);
54 
	if(req->version != NULL) free(req->version);
64 nishi 55 
 
56 
	req->method = NULL;
57 
	req->path = NULL;
58 
	req->query = NULL;
59 
	req->headers = NULL;
60 
	req->body = NULL;
61 
	req->version = NULL;
16 nishi 62 
}
63 
 
64 
int tw_http_parse(SSL* ssl, int sock, struct tw_http_request* req) {
65 
	char buffer[512];
66 
	char cbuf[2];
67 
	int phase = 0;
212 nishi 68 
	char* header;
69 
	int nl;
294 nishi 70 
	bool bad;
118 nishi 71 
 
72 
#ifdef USE_POLL
73 
	struct pollfd pollfds[1];
74 
	pollfds[0].fd = sock;
75 
	pollfds[0].events = POLLIN | POLLPRI;
76 
#else
16 nishi 77 
	fd_set fds;
118 nishi 78 
#endif
16 nishi 79 
 
294 nishi 80 
	bad = false;
16 nishi 81 
 
82 
	cbuf[1] = 0;
83 
 
84 
	req->method = NULL;
85 
	req->path = NULL;
20 nishi 86 
	req->query = NULL;
16 nishi 87 
	req->headers = NULL;
88 
	req->body = NULL;
89 
	req->version = NULL;
90 
 
212 nishi 91 
	header = malloc(1);
16 nishi 92 
	header[0] = 0;
212 nishi 93 
	nl = 0;
16 nishi 94 
 
95 
	while(1) {
212 nishi 96 
		int i;
97 
		int len;
213 nishi 98 
		int n;
118 nishi 99 
#ifndef USE_POLL
212 nishi 100 
		struct timeval tv;
16 nishi 101 
		FD_ZERO(&fds);
102 
		FD_SET(sock, &fds);
103 
		tv.tv_sec = 5;
104 
		tv.tv_usec = 0;
118 nishi 105 
#endif
43 nishi 106 
#ifndef NO_SSL
23 nishi 107 
		if(ssl == NULL || !SSL_has_pending(ssl)) {
43 nishi 108 
#endif
118 nishi 109 
#ifdef USE_POLL
212 nishi 110 
			n = poll(pollfds, 1, 5000);
118 nishi 111 
#else
88 nishi 112 
#ifdef __HAIKU__
212 nishi 113 
		n = select(32, &fds, NULL, NULL, &tv);
88 nishi 114 
#else
212 nishi 115 
		n = select(FD_SETSIZE, &fds, NULL, NULL, &tv);
88 nishi 116 
#endif
118 nishi 117 
#endif
22 nishi 118 
			if(n <= 0) {
147 nishi 119 
				cm_log("HTTP", "Timeout, disconnecting");
22 nishi 120 
				free(header);
121 
				tw_free_request(req);
122 
				return -1;
123 
			}
43 nishi 124 
#ifndef NO_SSL
22 nishi 125 
		}
43 nishi 126 
#endif
212 nishi 127 
		len = tw_read(ssl, sock, buffer, 512);
70 nishi 128 
		if(len <= 0) {
64 nishi 129 
			bad = true;
130 
			break;
131 
		}
16 nishi 132 
		for(i = 0; i < len; i++) {
133 
			char c = buffer[i];
134 
			if(phase == 0) {
135 
				if(c == ' ') {
136 
					if(req->method == NULL) {
137 
						tw_free_request(req);
138 
						bad = true;
139 
						goto getout;
140 
					} else {
141 
						phase++;
142 
					}
143 
				} else {
212 nishi 144 
					char* tmp;
16 nishi 145 
					if(req->method == NULL) {
146 
						req->method = malloc(1);
147 
						req->method[0] = 0;
148 
					}
149 
					cbuf[0] = c;
212 nishi 150 
					tmp = req->method;
16 nishi 151 
					req->method = cm_strcat(tmp, cbuf);
152 
					free(tmp);
153 
				}
154 
			} else if(phase == 1) {
155 
				if(c == ' ') {
156 
					if(req->path == NULL) {
157 
						tw_free_request(req);
158 
						bad = true;
159 
						goto getout;
160 
					} else {
161 
						phase++;
162 
					}
163 
				} else {
212 nishi 164 
					char* tmp;
16 nishi 165 
					if(req->path == NULL) {
166 
						req->path = malloc(1);
167 
						req->path[0] = 0;
168 
					}
169 
					cbuf[0] = c;
212 nishi 170 
					tmp = req->path;
16 nishi 171 
					req->path = cm_strcat(tmp, cbuf);
172 
					free(tmp);
173 
				}
174 
			} else if(phase == 2) {
175 
				if(c == '\n') {
176 
					if(req->version == NULL) {
177 
						tw_free_request(req);
178 
						bad = true;
179 
						goto getout;
180 
					} else {
181 
						/* We have Method, Path, Version now */
212 nishi 182 
						int j;
183 
						char* p;
184 
						int incr;
16 nishi 185 
						if(strcmp(req->version, "HTTP/1.1") != 0 && strcmp(req->version, "HTTP/1.0") != 0) {
186 
							cm_log("HTTP", "Bad HTTP Version");
187 
							bad = true;
188 
							goto getout;
189 
						}
190 
 
212 nishi 191 
						p = malloc(1);
16 nishi 192 
						p[0] = 0;
193 
						for(j = 0; req->path[j] != 0; j++) {
212 nishi 194 
							char* tmp;
16 nishi 195 
							if(req->path[j] == '/') {
196 
								cbuf[0] = '/';
197 
								for(; req->path[j] != 0 && req->path[j] == '/'; j++)
198 
									;
199 
								j--;
200 
							} else {
201 
								cbuf[0] = req->path[j];
202 
							}
212 nishi 203 
							tmp = p;
16 nishi 204 
							p = cm_strcat(tmp, cbuf);
205 
							free(tmp);
206 
						}
207 
						free(req->path);
208 
						req->path = p;
209 
 
212 nishi 210 
						incr = 0;
16 nishi 211 
						p = malloc(1);
212 
						p[0] = 0;
213 
						for(j = 0;; j++) {
214 
							if(req->path[j] == '/' || req->path[j] == 0) {
215 
								char oldc = req->path[j];
212 nishi 216 
								char* pth;
16 nishi 217 
								cbuf[0] = oldc;
218 
								req->path[j] = 0;
219 
 
212 nishi 220 
								pth = req->path + incr;
16 nishi 221 
 
222 
								if(strcmp(pth, "..") == 0) {
223 
									int k;
224 
									if(p[strlen(p) - 1] == '/') p[strlen(p) - 1] = 0;
225 
									for(k = strlen(p) - 1; k >= 0; k--) {
226 
										if(p[k] == '/') {
227 
											p[k + 1] = 0;
228 
											break;
229 
										}
230 
									}
231 
									if(strlen(p) == 0) {
232 
										free(p);
233 
										p = cm_strdup("/");
234 
									}
235 
								} else if(strcmp(pth, ".") == 0) {
236 
								} else {
237 
									char* tmp = p;
238 
									p = cm_strcat3(tmp, pth, cbuf);
239 
									free(tmp);
240 
								}
241 
 
242 
								incr = j + 1;
243 
								if(oldc == 0) break;
244 
							}
245 
						}
246 
						free(req->path);
247 
						req->path = p;
248 
 
249 
						cm_log("HTTP", "Request: %s %s %s", req->method, req->path, req->version);
250 
 
251 
						phase++;
252 
					}
253 
				} else if(c != '\r') {
212 nishi 254 
					char* tmp;
16 nishi 255 
					if(req->version == NULL) {
256 
						req->version = malloc(1);
257 
						req->version[0] = 0;
258 
					}
259 
					cbuf[0] = c;
212 nishi 260 
					tmp = req->version;
16 nishi 261 
					req->version = cm_strcat(tmp, cbuf);
262 
					free(tmp);
263 
				}
264 
			} else if(phase == 3) {
265 
				if(c == '\n') {
266 
					nl++;
267 
					if(nl == 2) {
268 
						phase++;
269 
						goto getout;
270 
					} else {
212 nishi 271 
						int j;
16 nishi 272 
						if(req->headers == NULL) {
273 
							req->headers = malloc(sizeof(*req->headers));
274 
							req->headers[0] = NULL;
275 
						}
276 
						for(j = 0; header[j] != 0; j++) {
277 
							if(header[j] == ':') {
212 nishi 278 
								char* kv;
279 
								char* vv;
280 
								char** old;
281 
								int k;
16 nishi 282 
								header[j] = 0;
283 
								j++;
284 
								for(; header[j] != 0 && (header[j] == ' ' || header[j] == '\t'); j++)
285 
									;
212 nishi 286 
								kv = header;
287 
								vv = header + j;
16 nishi 288 
 
212 nishi 289 
								old = req->headers;
16 nishi 290 
								for(k = 0; old[k] != NULL; k++)
291 
									;
292 
								req->headers = malloc(sizeof(*req->headers) * (k + 3));
293 
								for(k = 0; old[k] != NULL; k++) req->headers[k] = old[k];
294 
								req->headers[k] = cm_strdup(kv);
295 
								req->headers[k + 1] = cm_strdup(vv);
296 
								req->headers[k + 2] = NULL;
297 
								free(old);
298 
 
299 
								cm_log("HTTP", "Header: %s: %s", kv, vv);
300 
 
301 
								break;
302 
							}
303 
						}
304 
						free(header);
305 
						header = malloc(1);
306 
						header[0] = 0;
307 
					}
308 
				} else if(c != '\r') {
212 nishi 309 
					char* tmp;
16 nishi 310 
					nl = 0;
311 
					cbuf[0] = c;
212 nishi 312 
					tmp = header;
16 nishi 313 
					header = cm_strcat(tmp, cbuf);
314 
					free(tmp);
315 
				}
316 
			}
317 
		}
318 
	}
319 
getout:
320 
	free(header);
321 
	if(bad) {
322 
		tw_free_request(req);
323 
		return 1;
324 
	}
212 nishi 325 
	{
326 
		char* result = malloc(1);
327 
		int i;
328 
		int j;
329 
		int incr;
330 
		char* p;
331 
		result[0] = 0;
332 
		for(i = 0; req->path[i] != 0; i++) {
333 
			if(req->path[i] == '?') {
334 
				req->path[i] = 0;
335 
				req->query = cm_strdup(req->path + i + 1);
336 
				break;
337 
			}
20 nishi 338 
		}
212 nishi 339 
		for(i = 0; req->path[i] != 0; i++) {
340 
			if(req->path[i] == '%') {
341 
				if(req->path[i + 1] == 0) continue;
342 
				cbuf[0] = cm_hex(req->path + i + 1, 2);
343 
				if(cbuf[0] != '\\') {
344 
					char* tmp = result;
345 
					result = cm_strcat(tmp, cbuf);
346 
					free(tmp);
347 
				}
348 
				i += 2;
349 
			} else if(req->path[i] != '\\') {
350 
				char* tmp;
351 
				cbuf[0] = req->path[i];
352 
				tmp = result;
70 nishi 353 
				result = cm_strcat(tmp, cbuf);
354 
				free(tmp);
355 
			}
20 nishi 356 
		}
212 nishi 357 
		free(req->path);
358 
		req->path = result;
213 nishi 359 
 
212 nishi 360 
		incr = 0;
361 
		p = malloc(1);
362 
		p[0] = 0;
363 
		for(j = 0;; j++) {
364 
			if(req->path[j] == '/' || req->path[j] == 0) {
365 
				char oldc = req->path[j];
366 
				char* pth;
367 
				cbuf[0] = oldc;
368 
				req->path[j] = 0;
213 nishi 369 
 
212 nishi 370 
				pth = req->path + incr;
213 nishi 371 
 
212 nishi 372 
				if(strcmp(pth, "..") == 0) {
373 
					int k;
374 
					if(p[strlen(p) - 1] == '/') p[strlen(p) - 1] = 0;
375 
					for(k = strlen(p) - 1; k >= 0; k--) {
376 
						if(p[k] == '/') {
377 
							p[k + 1] = 0;
378 
							break;
379 
						}
69 nishi 380 
					}
212 nishi 381 
					if(strlen(p) == 0) {
382 
						free(p);
383 
						p = cm_strdup("/");
384 
					}
385 
				} else if(strcmp(pth, ".") == 0) {
386 
				} else {
387 
					char* tmp = p;
388 
					p = cm_strcat3(tmp, pth, cbuf);
389 
					free(tmp);
69 nishi 390 
				}
213 nishi 391 
 
212 nishi 392 
				incr = j + 1;
393 
				if(oldc == 0) break;
69 nishi 394 
			}
395 
		}
212 nishi 396 
		free(req->path);
397 
		req->path = p;
398 
		return 0;
69 nishi 399 
	}
16 nishi 400 
}