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source: protocols/yahoo/yahoo_httplib.c @ f9756bd

Last change on this file since f9756bd was c3c2e14, checked in by Wilmer van der Gaast <wilmer@…>, at 2005-11-30T12:12:25Z
Got rid of the config.h includes in IM-code. Now that HAVE_CONFIG_H is defined, they started to cause problems.
Property mode set to `100644`
File size: 8.9 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 write(a,b,c) send(a,b,c,0)
54	# define read(a,b,c) recv(a,b,c,0)
55	# define snprintf _snprintf
56	#endif
57
58	#ifdef USE_STRUCT_CALLBACKS
59	extern struct yahoo_callbacks *yc;
60	#define YAHOO_CALLBACK(x) yc->x
61	#else
62	#define YAHOO_CALLBACK(x) x
63	#endif
64
65	extern enum yahoo_log_level log_level;
66
67	int yahoo_tcp_readline(char *ptr, int maxlen, int fd)
68	{
69	int n, rc;
70	char c;
71
72	for (n = 1; n < maxlen; n++) {
73
74	do {
75	rc = read(fd, &c, 1);
76	} while(rc == -1 && (errno == EINTR \|\| errno == EAGAIN)); /* this is bad - it should be done asynchronously */
77
78	if (rc == 1) {
79	if(c == '\r') /* get rid of \r */
80	continue;
81	*ptr = c;
82	if (c == '\n')
83	break;
84	ptr++;
85	} else if (rc == 0) {
86	if (n == 1)
87	return (0); /* EOF, no data */
88	else
89	break; /* EOF, w/ data */
90	} else {
91	return -1;
92	}
93	}
94
95	*ptr = 0;
96	return (n);
97	}
98
99	static int url_to_host_port_path(const char *url,
100	char host, int port, char *path)
101	{
102	char *urlcopy=NULL;
103	char *slash=NULL;
104	char *colon=NULL;
105
106	/*
107	* http://hostname
108	* http://hostname/
109	* http://hostname/path
110	* http://hostname/path:foo
111	* http://hostname:port
112	* http://hostname:port/
113	* http://hostname:port/path
114	* http://hostname:port/path:foo
115	*/
116
117	if(strstr(url, "http://") == url) {
118	urlcopy = strdup(url+7);
119	} else {
120	WARNING(("Weird url - unknown protocol: %s", url));
121	return 0;
122	}
123
124	slash = strchr(urlcopy, '/');
125	colon = strchr(urlcopy, ':');
126
127	if(!colon \|\| (slash && slash < colon)) {
128	*port = 80;
129	} else {
130	*colon = 0;
131	*port = atoi(colon+1);
132	}
133
134	if(!slash) {
135	strcpy(path, "/");
136	} else {
137	strcpy(path, slash);
138	*slash = 0;
139	}
140
141	strcpy(host, urlcopy);
142
143	FREE(urlcopy);
144
145	return 1;
146	}
147
148	static int isurlchar(unsigned char c)
149	{
150	return (isalnum(c) \|\| '-' == c \|\| '_' == c);
151	}
152
153	char yahoo_urlencode(const char instr)
154	{
155	int ipos=0, bpos=0;
156	char *str = NULL;
157	int len = strlen(instr);
158
159	if(!(str = y_new(char, 3*len + 1) ))
160	return "";
161
162	while(instr[ipos]) {
163	while(isurlchar(instr[ipos]))
164	str[bpos++] = instr[ipos++];
165	if(!instr[ipos])
166	break;
167
168	snprintf(&str[bpos], 4, "%%%.2x", instr[ipos]);
169	bpos+=3;
170	ipos++;
171	}
172	str[bpos]='\0';
173
174	/* free extra alloc'ed mem. */
175	len = strlen(str);
176	str = y_renew(char, str, len+1);
177
178	return (str);
179	}
180
181	char yahoo_urldecode(const char instr)
182	{
183	int ipos=0, bpos=0;
184	char *str = NULL;
185	char entity[3]={0,0,0};
186	unsigned dec;
187	int len = strlen(instr);
188
189	if(!(str = y_new(char, len+1) ))
190	return "";
191
192	while(instr[ipos]) {
193	while(instr[ipos] && instr[ipos]!='%')
194	if(instr[ipos]=='+') {
195	str[bpos++]=' ';
196	ipos++;
197	} else
198	str[bpos++] = instr[ipos++];
199	if(!instr[ipos])
200	break;
201
202	if(instr[ipos+1] && instr[ipos+2]) {
203	ipos++;
204	entity[0]=instr[ipos++];
205	entity[1]=instr[ipos++];
206	sscanf(entity, "%2x", &dec);
207	str[bpos++] = (char)dec;
208	} else {
209	str[bpos++] = instr[ipos++];
210	}
211	}
212	str[bpos]='\0';
213
214	/* free extra alloc'ed mem. */
215	len = strlen(str);
216	str = y_renew(char, str, len+1);
217
218	return (str);
219	}
220
221	char yahoo_xmldecode(const char instr)
222	{
223	int ipos=0, bpos=0, epos=0;
224	char *str = NULL;
225	char entity[4]={0,0,0,0};
226	char *entitymap[5][2]={
227	{"amp;", "&"},
228	{"quot;", "\""},
229	{"lt;", "<"},
230	{"gt;", "<"},
231	{"nbsp;", " "}
232	};
233	unsigned dec;
234	int len = strlen(instr);
235
236	if(!(str = y_new(char, len+1) ))
237	return "";
238
239	while(instr[ipos]) {
240	while(instr[ipos] && instr[ipos]!='&')
241	if(instr[ipos]=='+') {
242	str[bpos++]=' ';
243	ipos++;
244	} else
245	str[bpos++] = instr[ipos++];
246	if(!instr[ipos] \|\| !instr[ipos+1])
247	break;
248	ipos++;
249
250	if(instr[ipos] == '#') {
251	ipos++;
252	epos=0;
253	while(instr[ipos] != ';')
254	entity[epos++]=instr[ipos++];
255	sscanf(entity, "%u", &dec);
256	str[bpos++] = (char)dec;
257	ipos++;
258	} else {
259	int i;
260	for (i=0; i<5; i++)
261	if(!strncmp(instr+ipos, entitymap[i][0],
262	strlen(entitymap[i][0]))) {
263	str[bpos++] = entitymap[i][1][0];
264	ipos += strlen(entitymap[i][0]);
265	break;
266	}
267	}
268	}
269	str[bpos]='\0';
270
271	/* free extra alloc'ed mem. */
272	len = strlen(str);
273	str = y_renew(char, str, len+1);
274
275	return (str);
276	}
277
278	typedef void (*http_connected)(int id, int fd, int error);
279
280	struct callback_data {
281	int id;
282	yahoo_get_fd_callback callback;
283	char *request;
284	void *user_data;
285	};
286
287	static void connect_complete(int fd, int error, void *data)
288	{
289	struct callback_data *ccd = data;
290	if(error == 0 && fd > 0)
291	write(fd, ccd->request, strlen(ccd->request));
292	FREE(ccd->request);
293	ccd->callback(ccd->id, fd, error, ccd->user_data);
294	FREE(ccd);
295	}
296
297	static void yahoo_send_http_request(int id, char host, int port, char request,
298	yahoo_get_fd_callback callback, void *data)
299	{
300	struct callback_data *ccd=y_new0(struct callback_data, 1);
301	ccd->callback = callback;
302	ccd->id = id;
303	ccd->request = strdup(request);
304	ccd->user_data = data;
305
306	YAHOO_CALLBACK(ext_yahoo_connect_async)(id, host, port, connect_complete, ccd);
307	}
308
309	void yahoo_http_post(int id, const char url, const char cookies, long content_length,
310	yahoo_get_fd_callback callback, void *data)
311	{
312	char host[255];
313	int port = 80;
314	char path[255];
315	char buff[1024];
316
317	if(!url_to_host_port_path(url, host, &port, path))
318	return;
319
320	snprintf(buff, sizeof(buff),
321	"POST %s HTTP/1.0\r\n"
322	"Content-length: %ld\r\n"
323	"User-Agent: Mozilla/4.5 [en] (" PACKAGE "/" VERSION ")\r\n"
324	"Host: %s:%d\r\n"
325	"Cookie: %s\r\n"
326	"\r\n",
327	path, content_length,
328	host, port,
329	cookies);
330
331	yahoo_send_http_request(id, host, port, buff, callback, data);
332	}
333
334	void yahoo_http_get(int id, const char url, const char cookies,
335	yahoo_get_fd_callback callback, void *data)
336	{
337	char host[255];
338	int port = 80;
339	char path[255];
340	char buff[1024];
341
342	if(!url_to_host_port_path(url, host, &port, path))
343	return;
344
345	snprintf(buff, sizeof(buff),
346	"GET %s HTTP/1.0\r\n"
347	"Host: %s:%d\r\n"
348	"User-Agent: Mozilla/4.5 [en] (" PACKAGE "/" VERSION ")\r\n"
349	"Cookie: %s\r\n"
350	"\r\n",
351	path, host, port, cookies);
352
353	yahoo_send_http_request(id, host, port, buff, callback, data);
354	}
355
356	struct url_data {
357	yahoo_get_url_handle_callback callback;
358	void *user_data;
359	};
360
361	static void yahoo_got_url_fd(int id, int fd, int error, void *data)
362	{
363	char *tmp=NULL;
364	char buff[1024];
365	unsigned long filesize=0;
366	char *filename=NULL;
367	int n;
368
369	struct url_data *ud = data;
370
371	if(error \|\| fd < 0) {
372	ud->callback(id, fd, error, filename, filesize, ud->user_data);
373	FREE(ud);
374	return;
375	}
376
377	while((n=yahoo_tcp_readline(buff, sizeof(buff), fd)) > 0) {
378	LOG(("Read:%s:\n", buff));
379	if(!strcmp(buff, ""))
380	break;
381
382	if( !strncasecmp(buff, "Content-length:",
383	strlen("Content-length:")) ) {
384	tmp = strrchr(buff, ' ');
385	if(tmp)
386	filesize = atol(tmp);
387	}
388
389	if( !strncasecmp(buff, "Content-disposition:",
390	strlen("Content-disposition:")) ) {
391	tmp = strstr(buff, "name=");
392	if(tmp) {
393	tmp+=strlen("name=");
394	if(tmp[0] == '"') {
395	char *tmp2;
396	tmp++;
397	tmp2 = strchr(tmp, '"');
398	if(tmp2)
399	*tmp2 = '\0';
400	} else {
401	char *tmp2;
402	tmp2 = strchr(tmp, ';');
403	if(!tmp2)
404	tmp2 = strchr(tmp, '\r');
405	if(!tmp2)
406	tmp2 = strchr(tmp, '\n');
407	if(tmp2)
408	*tmp2 = '\0';
409	}
410
411	filename = strdup(tmp);
412	}
413	}
414	}
415
416	LOG(("n == %d\n", n));
417	LOG(("Calling callback, filename:%s, size: %ld\n", filename, filesize));
418	ud->callback(id, fd, error, filename, filesize, ud->user_data);
419	FREE(ud);
420	FREE(filename);
421	}
422
423	void yahoo_get_url_fd(int id, const char url, const struct yahoo_data yd,
424	yahoo_get_url_handle_callback callback, void *data)
425	{
426	char buff[1024];
427	struct url_data *ud = y_new0(struct url_data, 1);
428	snprintf(buff, sizeof(buff), "Y=%s; T=%s", yd->cookie_y, yd->cookie_t);
429	ud->callback = callback;
430	ud->user_data = data;
431	yahoo_http_get(id, url, buff, yahoo_got_url_fd, ud);
432	}
433

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