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source: protocols/yahoo/yahoo_httplib.c @ 4fefb77

Last change on this file since 4fefb77 was fcc2da9, checked in by Jelmer Vernooij <jelmer@…>, at 2006-05-26T15:46:51Z
Remove unnecessary Windows-specific code.
Property mode set to `100644`
File size: 8.8 KB

Line
1	/*
2	* libyahoo2: yahoo_httplib.c
3	*
4	* Copyright (C) 2002-2004, Philip S Tellis <philip.tellis AT gmx.net>
5	*
6	* This program is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*
20	*/
21
22	#include <stdio.h>
23	#include <stdlib.h>
24
25	#if STDC_HEADERS
26	# include <string.h>
27	#else
28	# if !HAVE_STRCHR
29	# define strchr index
30	# define strrchr rindex
31	# endif
32	char strchr (), strrchr ();
33	# if !HAVE_MEMCPY
34	# define memcpy(d, s, n) bcopy ((s), (d), (n))
35	# define memmove(d, s, n) bcopy ((s), (d), (n))
36	# endif
37	#endif
38
39
40	#include <errno.h>
41	#ifndef _WIN32
42	#include <unistd.h>
43	#endif
44	#include <ctype.h>
45	#include "yahoo2.h"
46	#include "yahoo2_callbacks.h"
47	#include "yahoo_httplib.h"
48	#include "yahoo_util.h"
49
50	#include "yahoo_debug.h"
51	#ifdef __MINGW32__
52	# include <winsock2.h>
53	# define snprintf _snprintf
54	#endif
55
56	#ifdef USE_STRUCT_CALLBACKS
57	extern struct yahoo_callbacks *yc;
58	#define YAHOO_CALLBACK(x) yc->x
59	#else
60	#define YAHOO_CALLBACK(x) x
61	#endif
62
63	extern enum yahoo_log_level log_level;
64
65	int yahoo_tcp_readline(char *ptr, int maxlen, int fd)
66	{
67	int n, rc;
68	char c;
69
70	for (n = 1; n < maxlen; n++) {
71
72	do {
73	rc = read(fd, &c, 1);
74	} while(rc == -1 && (errno == EINTR \|\| errno == EAGAIN)); /* this is bad - it should be done asynchronously */
75
76	if (rc == 1) {
77	if(c == '\r') /* get rid of \r */
78	continue;
79	*ptr = c;
80	if (c == '\n')
81	break;
82	ptr++;
83	} else if (rc == 0) {
84	if (n == 1)
85	return (0); /* EOF, no data */
86	else
87	break; /* EOF, w/ data */
88	} else {
89	return -1;
90	}
91	}
92
93	*ptr = 0;
94	return (n);
95	}
96
97	static int url_to_host_port_path(const char *url,
98	char host, int port, char *path)
99	{
100	char *urlcopy=NULL;
101	char *slash=NULL;
102	char *colon=NULL;
103
104	/*
105	* http://hostname
106	* http://hostname/
107	* http://hostname/path
108	* http://hostname/path:foo
109	* http://hostname:port
110	* http://hostname:port/
111	* http://hostname:port/path
112	* http://hostname:port/path:foo
113	*/
114
115	if(strstr(url, "http://") == url) {
116	urlcopy = strdup(url+7);
117	} else {
118	WARNING(("Weird url - unknown protocol: %s", url));
119	return 0;
120	}
121
122	slash = strchr(urlcopy, '/');
123	colon = strchr(urlcopy, ':');
124
125	if(!colon \|\| (slash && slash < colon)) {
126	*port = 80;
127	} else {
128	*colon = 0;
129	*port = atoi(colon+1);
130	}
131
132	if(!slash) {
133	strcpy(path, "/");
134	} else {
135	strcpy(path, slash);
136	*slash = 0;
137	}
138
139	strcpy(host, urlcopy);
140
141	FREE(urlcopy);
142
143	return 1;
144	}
145
146	static int isurlchar(unsigned char c)
147	{
148	return (isalnum(c) \|\| '-' == c \|\| '_' == c);
149	}
150
151	char yahoo_urlencode(const char instr)
152	{
153	int ipos=0, bpos=0;
154	char *str = NULL;
155	int len = strlen(instr);
156
157	if(!(str = y_new(char, 3*len + 1) ))
158	return "";
159
160	while(instr[ipos]) {
161	while(isurlchar(instr[ipos]))
162	str[bpos++] = instr[ipos++];
163	if(!instr[ipos])
164	break;
165
166	snprintf(&str[bpos], 4, "%%%.2x", instr[ipos]);
167	bpos+=3;
168	ipos++;
169	}
170	str[bpos]='\0';
171
172	/* free extra alloc'ed mem. */
173	len = strlen(str);
174	str = y_renew(char, str, len+1);
175
176	return (str);
177	}
178
179	char yahoo_urldecode(const char instr)
180	{
181	int ipos=0, bpos=0;
182	char *str = NULL;
183	char entity[3]={0,0,0};
184	unsigned dec;
185	int len = strlen(instr);
186
187	if(!(str = y_new(char, len+1) ))
188	return "";
189
190	while(instr[ipos]) {
191	while(instr[ipos] && instr[ipos]!='%')
192	if(instr[ipos]=='+') {
193	str[bpos++]=' ';
194	ipos++;
195	} else
196	str[bpos++] = instr[ipos++];
197	if(!instr[ipos])
198	break;
199
200	if(instr[ipos+1] && instr[ipos+2]) {
201	ipos++;
202	entity[0]=instr[ipos++];
203	entity[1]=instr[ipos++];
204	sscanf(entity, "%2x", &dec);
205	str[bpos++] = (char)dec;
206	} else {
207	str[bpos++] = instr[ipos++];
208	}
209	}
210	str[bpos]='\0';
211
212	/* free extra alloc'ed mem. */
213	len = strlen(str);
214	str = y_renew(char, str, len+1);
215
216	return (str);
217	}
218
219	char yahoo_xmldecode(const char instr)
220	{
221	int ipos=0, bpos=0, epos=0;
222	char *str = NULL;
223	char entity[4]={0,0,0,0};
224	char *entitymap[5][2]={
225	{"amp;", "&"},
226	{"quot;", "\""},
227	{"lt;", "<"},
228	{"gt;", "<"},
229	{"nbsp;", " "}
230	};
231	unsigned dec;
232	int len = strlen(instr);
233
234	if(!(str = y_new(char, len+1) ))
235	return "";
236
237	while(instr[ipos]) {
238	while(instr[ipos] && instr[ipos]!='&')
239	if(instr[ipos]=='+') {
240	str[bpos++]=' ';
241	ipos++;
242	} else
243	str[bpos++] = instr[ipos++];
244	if(!instr[ipos] \|\| !instr[ipos+1])
245	break;
246	ipos++;
247
248	if(instr[ipos] == '#') {
249	ipos++;
250	epos=0;
251	while(instr[ipos] != ';')
252	entity[epos++]=instr[ipos++];
253	sscanf(entity, "%u", &dec);
254	str[bpos++] = (char)dec;
255	ipos++;
256	} else {
257	int i;
258	for (i=0; i<5; i++)
259	if(!strncmp(instr+ipos, entitymap[i][0],
260	strlen(entitymap[i][0]))) {
261	str[bpos++] = entitymap[i][1][0];
262	ipos += strlen(entitymap[i][0]);
263	break;
264	}
265	}
266	}
267	str[bpos]='\0';
268
269	/* free extra alloc'ed mem. */
270	len = strlen(str);
271	str = y_renew(char, str, len+1);
272
273	return (str);
274	}
275
276	typedef void (*http_connected)(int id, int fd, int error);
277
278	struct callback_data {
279	int id;
280	yahoo_get_fd_callback callback;
281	char *request;
282	void *user_data;
283	};
284
285	static void connect_complete(int fd, int error, void *data)
286	{
287	struct callback_data *ccd = data;
288	if(error == 0 && fd > 0)
289	write(fd, ccd->request, strlen(ccd->request));
290	FREE(ccd->request);
291	ccd->callback(ccd->id, fd, error, ccd->user_data);
292	FREE(ccd);
293	}
294
295	static void yahoo_send_http_request(int id, char host, int port, char request,
296	yahoo_get_fd_callback callback, void *data)
297	{
298	struct callback_data *ccd=y_new0(struct callback_data, 1);
299	ccd->callback = callback;
300	ccd->id = id;
301	ccd->request = strdup(request);
302	ccd->user_data = data;
303
304	YAHOO_CALLBACK(ext_yahoo_connect_async)(id, host, port, connect_complete, ccd);
305	}
306
307	void yahoo_http_post(int id, const char url, const char cookies, long content_length,
308	yahoo_get_fd_callback callback, void *data)
309	{
310	char host[255];
311	int port = 80;
312	char path[255];
313	char buff[1024];
314
315	if(!url_to_host_port_path(url, host, &port, path))
316	return;
317
318	snprintf(buff, sizeof(buff),
319	"POST %s HTTP/1.0\r\n"
320	"Content-length: %ld\r\n"
321	"User-Agent: Mozilla/4.5 [en] (" PACKAGE "/" VERSION ")\r\n"
322	"Host: %s:%d\r\n"
323	"Cookie: %s\r\n"
324	"\r\n",
325	path, content_length,
326	host, port,
327	cookies);
328
329	yahoo_send_http_request(id, host, port, buff, callback, data);
330	}
331
332	void yahoo_http_get(int id, const char url, const char cookies,
333	yahoo_get_fd_callback callback, void *data)
334	{
335	char host[255];
336	int port = 80;
337	char path[255];
338	char buff[1024];
339
340	if(!url_to_host_port_path(url, host, &port, path))
341	return;
342
343	snprintf(buff, sizeof(buff),
344	"GET %s HTTP/1.0\r\n"
345	"Host: %s:%d\r\n"
346	"User-Agent: Mozilla/4.5 [en] (" PACKAGE "/" VERSION ")\r\n"
347	"Cookie: %s\r\n"
348	"\r\n",
349	path, host, port, cookies);
350
351	yahoo_send_http_request(id, host, port, buff, callback, data);
352	}
353
354	struct url_data {
355	yahoo_get_url_handle_callback callback;
356	void *user_data;
357	};
358
359	static void yahoo_got_url_fd(int id, int fd, int error, void *data)
360	{
361	char *tmp=NULL;
362	char buff[1024];
363	unsigned long filesize=0;
364	char *filename=NULL;
365	int n;
366
367	struct url_data *ud = data;
368
369	if(error \|\| fd < 0) {
370	ud->callback(id, fd, error, filename, filesize, ud->user_data);
371	FREE(ud);
372	return;
373	}
374
375	while((n=yahoo_tcp_readline(buff, sizeof(buff), fd)) > 0) {
376	LOG(("Read:%s:\n", buff));
377	if(!strcmp(buff, ""))
378	break;
379
380	if( !strncasecmp(buff, "Content-length:",
381	strlen("Content-length:")) ) {
382	tmp = strrchr(buff, ' ');
383	if(tmp)
384	filesize = atol(tmp);
385	}
386
387	if( !strncasecmp(buff, "Content-disposition:",
388	strlen("Content-disposition:")) ) {
389	tmp = strstr(buff, "name=");
390	if(tmp) {
391	tmp+=strlen("name=");
392	if(tmp[0] == '"') {
393	char *tmp2;
394	tmp++;
395	tmp2 = strchr(tmp, '"');
396	if(tmp2)
397	*tmp2 = '\0';
398	} else {
399	char *tmp2;
400	tmp2 = strchr(tmp, ';');
401	if(!tmp2)
402	tmp2 = strchr(tmp, '\r');
403	if(!tmp2)
404	tmp2 = strchr(tmp, '\n');
405	if(tmp2)
406	*tmp2 = '\0';
407	}
408
409	filename = strdup(tmp);
410	}
411	}
412	}
413
414	LOG(("n == %d\n", n));
415	LOG(("Calling callback, filename:%s, size: %ld\n", filename, filesize));
416	ud->callback(id, fd, error, filename, filesize, ud->user_data);
417	FREE(ud);
418	FREE(filename);
419	}
420
421	void yahoo_get_url_fd(int id, const char url, const struct yahoo_data yd,
422	yahoo_get_url_handle_callback callback, void *data)
423	{
424	char buff[1024];
425	struct url_data *ud = y_new0(struct url_data, 1);
426	snprintf(buff, sizeof(buff), "Y=%s; T=%s", yd->cookie_y, yd->cookie_t);
427	ud->callback = callback;
428	ud->user_data = data;
429	yahoo_http_get(id, url, buff, yahoo_got_url_fd, ud);
430	}
431

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