http-curl.cpp@ 67791

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1	/* $Id: http-curl.cpp 63451 2016-08-15 00:39:40Z vboxsync $ */
2	/** @file
3	* IPRT - HTTP client API, cURL based.
4	*/
5
6	/*
7	* Copyright (C) 2012-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#define LOG_GROUP RTLOGGROUP_HTTP
32	#include <iprt/http.h>
33	#include "internal/iprt.h"
34
35	#include <iprt/asm.h>
36	#include <iprt/assert.h>
37	#include <iprt/cidr.h>
38	#include <iprt/crypto/store.h>
39	#include <iprt/ctype.h>
40	#include <iprt/env.h>
41	#include <iprt/err.h>
42	#include <iprt/file.h>
43	#include <iprt/ldr.h>
44	#include <iprt/log.h>
45	#include <iprt/mem.h>
46	#include <iprt/net.h>
47	#include <iprt/once.h>
48	#include <iprt/path.h>
49	#include <iprt/stream.h>
50	#include <iprt/string.h>
51	#include <iprt/uni.h>
52	#include <iprt/uri.h>
53
54	#include "internal/magics.h"
55
56	#ifdef RT_OS_WINDOWS /* curl.h drags in windows.h which isn't necessarily -Wall clean. */
57	# include <iprt/win/windows.h>
58	#endif
59	#include <curl/curl.h>
60
61	#ifdef RT_OS_DARWIN
62	# include <CoreFoundation/CoreFoundation.h>
63	# include <SystemConfiguration/SystemConfiguration.h>
64	# include <CoreServices/CoreServices.h>
65	#endif
66	#ifdef RT_OS_WINDOWS
67	# include <Winhttp.h>
68	# include "../r3/win/internal-r3-win.h"
69	#endif
70
71	#ifdef RT_OS_LINUX
72	//# define IPRT_USE_LIBPROXY
73	#endif
74	#ifdef IPRT_USE_LIBPROXY
75	# include <stdlib.h> /* free */
76	#endif
77
78
79	/*********************************************************************************************************************************
80	* Structures and Typedefs *
81	*********************************************************************************************************************************/
82	/**
83	* Internal HTTP client instance.
84	*/
85	typedef struct RTHTTPINTERNAL
86	{
87	/** Magic value. */
88	uint32_t u32Magic;
89	/** cURL handle. */
90	CURL *pCurl;
91	/** The last response code. */
92	long lLastResp;
93	/** Custom headers/ */
94	struct curl_slist *pHeaders;
95	/** CA certificate file for HTTPS authentication. */
96	char *pszCaFile;
97	/** Whether to delete the CA on destruction. */
98	bool fDeleteCaFile;
99
100	/** Set if we've applied a CURLOTP_USERAGENT already. */
101	bool fHaveSetUserAgent;
102	/** Set if we've got a user agent header, otherwise clear. */
103	bool fHaveUserAgentHeader;
104
105	/** @name Proxy settings.
106	* When fUseSystemProxySettings is set, the other members will be updated each
107	* time we're presented with a new URL. The members reflect the cURL
108	* configuration.
109	*
110	* @{ */
111	/** Set if we should use the system proxy settings for a URL.
112	* This means reconfiguring cURL for each request. */
113	bool fUseSystemProxySettings;
114	/** Set if we've detected no proxy necessary. */
115	bool fNoProxy;
116	/** Proxy host name (RTStrFree). */
117	char *pszProxyHost;
118	/** Proxy port number (UINT32_MAX if not specified). */
119	uint32_t uProxyPort;
120	/** The proxy type (CURLPROXY_HTTP, CURLPROXY_SOCKS5, ++). */
121	curl_proxytype enmProxyType;
122	/** Proxy username (RTStrFree). */
123	char *pszProxyUsername;
124	/** Proxy password (RTStrFree). */
125	char *pszProxyPassword;
126	/** @} */
127
128	/** Abort the current HTTP request if true. */
129	bool volatile fAbort;
130	/** Set if someone is preforming an HTTP operation. */
131	bool volatile fBusy;
132	/** The location field for 301 responses. */
133	char *pszRedirLocation;
134
135	/** Output callback data. */
136	union
137	{
138	/** For file destination. */
139	RTFILE hFile;
140	/** For memory destination. */
141	struct
142	{
143	/** The current size (sans terminator char). */
144	size_t cb;
145	/** The currently allocated size. */
146	size_t cbAllocated;
147	/** Pointer to the buffer. */
148	uint8_t *pb;
149	} Mem;
150	} Output;
151	/** Output callback status. */
152	int rcOutput;
153	/** Download size hint set by the progress callback. */
154	uint64_t cbDownloadHint;
155	/** Callback called during download. */
156	PRTHTTPDOWNLDPROGRCALLBACK pfnDownloadProgress;
157	/** User pointer parameter for pfnDownloadProgress. */
158	void *pvDownloadProgressUser;
159	} RTHTTPINTERNAL;
160	/** Pointer to an internal HTTP client instance. */
161	typedef RTHTTPINTERNAL *PRTHTTPINTERNAL;
162
163
164	#ifdef RT_OS_WINDOWS
165	/** @name Windows: Types for dynamically resolved APIs
166	* @{ */
167	typedef HINTERNET (WINAPI * PFNWINHTTPOPEN)(LPCWSTR, DWORD, LPCWSTR, LPCWSTR, DWORD);
168	typedef BOOL (WINAPI * PFNWINHTTPCLOSEHANDLE)(HINTERNET);
169	typedef BOOL (WINAPI * PFNWINHTTPGETPROXYFORURL)(HINTERNET, LPCWSTR, WINHTTP_AUTOPROXY_OPTIONS , WINHTTP_PROXY_INFO );
170	typedef BOOL (WINAPI * PFNWINHTTPGETDEFAULTPROXYCONFIGURATION)(WINHTTP_PROXY_INFO *);
171	typedef BOOL (WINAPI * PFNWINHTTPGETIEPROXYCONFIGFORCURRENTUSER)(WINHTTP_CURRENT_USER_IE_PROXY_CONFIG *);
172	/** @} */
173	#endif
174
175	#ifdef IPRT_USE_LIBPROXY
176	typedef struct px_proxy_factory *PLIBPROXYFACTORY;
177	typedef PLIBPROXYFACTORY (* PFNLIBPROXYFACTORYCTOR)(void);
178	typedef void (* PFNLIBPROXYFACTORYDTOR)(PLIBPROXYFACTORY);
179	typedef char ** (* PFNLIBPROXYFACTORYGETPROXIES)(PLIBPROXYFACTORY, const char *);
180	#endif
181
182
183	/*********************************************************************************************************************************
184	* Defined Constants And Macros *
185	*********************************************************************************************************************************/
186	/** @def RTHTTP_MAX_MEM_DOWNLOAD_SIZE
187	* The max size we are allowed to download to a memory buffer.
188	*
189	* @remarks The minus 1 is for the trailing zero terminator we always add.
190	*/
191	#if ARCH_BITS == 64
192	# define RTHTTP_MAX_MEM_DOWNLOAD_SIZE (UINT32_C(64)*_1M - 1)
193	#else
194	# define RTHTTP_MAX_MEM_DOWNLOAD_SIZE (UINT32_C(32)*_1M - 1)
195	#endif
196
197	/** Checks whether a cURL return code indicates success. */
198	#define CURL_SUCCESS(rcCurl) RT_LIKELY(rcCurl == CURLE_OK)
199	/** Checks whether a cURL return code indicates failure. */
200	#define CURL_FAILURE(rcCurl) RT_UNLIKELY(rcCurl != CURLE_OK)
201
202	/** Validates a handle and returns VERR_INVALID_HANDLE if not valid. */
203	#define RTHTTP_VALID_RETURN_RC(hHttp, rcCurl) \
204	do { \
205	AssertPtrReturn((hHttp), (rcCurl)); \
206	AssertReturn((hHttp)->u32Magic == RTHTTP_MAGIC, (rcCurl)); \
207	} while (0)
208
209	/** Validates a handle and returns VERR_INVALID_HANDLE if not valid. */
210	#define RTHTTP_VALID_RETURN(hHTTP) RTHTTP_VALID_RETURN_RC((hHttp), VERR_INVALID_HANDLE)
211
212	/** Validates a handle and returns (void) if not valid. */
213	#define RTHTTP_VALID_RETURN_VOID(hHttp) \
214	do { \
215	AssertPtrReturnVoid(hHttp); \
216	AssertReturnVoid((hHttp)->u32Magic == RTHTTP_MAGIC); \
217	} while (0)
218
219
220	/*********************************************************************************************************************************
221	* Global Variables *
222	*********************************************************************************************************************************/
223	#ifdef RT_OS_WINDOWS
224	/** @name Windows: Dynamically resolved APIs
225	* @{ */
226	static RTONCE g_WinResolveImportsOnce = RTONCE_INITIALIZER;
227	static PFNWINHTTPOPEN g_pfnWinHttpOpen = NULL;
228	static PFNWINHTTPCLOSEHANDLE g_pfnWinHttpCloseHandle = NULL;
229	static PFNWINHTTPGETPROXYFORURL g_pfnWinHttpGetProxyForUrl = NULL;
230	static PFNWINHTTPGETDEFAULTPROXYCONFIGURATION g_pfnWinHttpGetDefaultProxyConfiguration = NULL;
231	static PFNWINHTTPGETIEPROXYCONFIGFORCURRENTUSER g_pfnWinHttpGetIEProxyConfigForCurrentUser = NULL;
232	/** @} */
233	#endif
234
235	#ifdef IPRT_USE_LIBPROXY
236	/** @name Dynamaically resolved libproxy APIs.
237	* @{ */
238	static RTONCE g_LibProxyResolveImportsOnce = RTONCE_INITIALIZER;
239	static RTLDRMOD g_hLdrLibProxy = NIL_RTLDRMOD;
240	static PFNLIBPROXYFACTORYCTOR g_pfnLibProxyFactoryCtor = NULL;
241	static PFNLIBPROXYFACTORYDTOR g_pfnLibProxyFactoryDtor = NULL;
242	static PFNLIBPROXYFACTORYGETPROXIES g_pfnLibProxyFactoryGetProxies = NULL;
243	/** @} */
244	#endif
245
246
247	/*********************************************************************************************************************************
248	* Internal Functions *
249	*********************************************************************************************************************************/
250	static void rtHttpUnsetCaFile(PRTHTTPINTERNAL pThis);
251	#ifdef RT_OS_DARWIN
252	static int rtHttpDarwinTryConfigProxies(PRTHTTPINTERNAL pThis, CFArrayRef hArrayProxies, CFURLRef hUrlTarget, bool fIgnorePacType);
253	#endif
254
255
256	RTR3DECL(int) RTHttpCreate(PRTHTTP phHttp)
257	{
258	AssertPtrReturn(phHttp, VERR_INVALID_PARAMETER);
259
260	/** @todo r=bird: rainy day: curl_global_init is not thread safe, only a
261	* problem if multiple threads get here at the same time. */
262	int rc = VERR_HTTP_INIT_FAILED;
263	CURLcode rcCurl = curl_global_init(CURL_GLOBAL_ALL);
264	if (!CURL_FAILURE(rcCurl))
265	{
266	CURL *pCurl = curl_easy_init();
267	if (pCurl)
268	{
269	PRTHTTPINTERNAL pThis = (PRTHTTPINTERNAL)RTMemAllocZ(sizeof(RTHTTPINTERNAL));
270	if (pThis)
271	{
272	pThis->u32Magic = RTHTTP_MAGIC;
273	pThis->pCurl = pCurl;
274	pThis->fUseSystemProxySettings = true;
275
276	*phHttp = (RTHTTP)pThis;
277
278	return VINF_SUCCESS;
279	}
280	rc = VERR_NO_MEMORY;
281	}
282	else
283	rc = VERR_HTTP_INIT_FAILED;
284	}
285	curl_global_cleanup();
286	return rc;
287	}
288
289
290	RTR3DECL(void) RTHttpDestroy(RTHTTP hHttp)
291	{
292	if (hHttp == NIL_RTHTTP)
293	return;
294
295	PRTHTTPINTERNAL pThis = hHttp;
296	RTHTTP_VALID_RETURN_VOID(pThis);
297
298	Assert(!pThis->fBusy);
299
300	pThis->u32Magic = RTHTTP_MAGIC_DEAD;
301
302	curl_easy_cleanup(pThis->pCurl);
303	pThis->pCurl = NULL;
304
305	if (pThis->pHeaders)
306	curl_slist_free_all(pThis->pHeaders);
307
308	rtHttpUnsetCaFile(pThis);
309	Assert(!pThis->pszCaFile);
310
311	if (pThis->pszRedirLocation)
312	RTStrFree(pThis->pszRedirLocation);
313
314	RTStrFree(pThis->pszProxyHost);
315	RTStrFree(pThis->pszProxyUsername);
316	if (pThis->pszProxyPassword)
317	{
318	RTMemWipeThoroughly(pThis->pszProxyPassword, strlen(pThis->pszProxyPassword), 2);
319	RTStrFree(pThis->pszProxyPassword);
320	}
321
322	RTMemFree(pThis);
323
324	curl_global_cleanup();
325	}
326
327
328	RTR3DECL(int) RTHttpAbort(RTHTTP hHttp)
329	{
330	PRTHTTPINTERNAL pThis = hHttp;
331	RTHTTP_VALID_RETURN(pThis);
332
333	pThis->fAbort = true;
334
335	return VINF_SUCCESS;
336	}
337
338
339	RTR3DECL(int) RTHttpGetRedirLocation(RTHTTP hHttp, char **ppszRedirLocation)
340	{
341	PRTHTTPINTERNAL pThis = hHttp;
342	RTHTTP_VALID_RETURN(pThis);
343	Assert(!pThis->fBusy);
344
345	if (!pThis->pszRedirLocation)
346	return VERR_HTTP_NOT_FOUND;
347
348	return RTStrDupEx(ppszRedirLocation, pThis->pszRedirLocation);
349	}
350
351
352	RTR3DECL(int) RTHttpUseSystemProxySettings(RTHTTP hHttp)
353	{
354	PRTHTTPINTERNAL pThis = hHttp;
355	RTHTTP_VALID_RETURN(pThis);
356	AssertReturn(!pThis->fBusy, VERR_WRONG_ORDER);
357
358	/*
359	* Change the settings.
360	*/
361	pThis->fUseSystemProxySettings = true;
362	return VINF_SUCCESS;
363	}
364
365
366	/**
367	* rtHttpConfigureProxyForUrl: Update cURL proxy settings as needed.
368	*
369	* @returns IPRT status code.
370	* @param pThis The HTTP client instance.
371	* @param enmProxyType The proxy type.
372	* @param pszHost The proxy host name.
373	* @param uPort The proxy port number.
374	* @param pszUsername The proxy username, or NULL if none.
375	* @param pszPassword The proxy password, or NULL if none.
376	*/
377	static int rtHttpUpdateProxyConfig(PRTHTTPINTERNAL pThis, curl_proxytype enmProxyType, const char *pszHost,
378	uint32_t uPort, const char pszUsername, const char pszPassword)
379	{
380	int rcCurl;
381	AssertReturn(pszHost, VERR_INVALID_PARAMETER);
382	Log(("rtHttpUpdateProxyConfig: pThis=%p type=%d host='%s' port=%u user='%s'%s\n",
383	pThis, enmProxyType, pszHost, uPort, pszUsername, pszPassword ? " with password" : " without password"));
384
385	#ifdef CURLOPT_NOPROXY
386	if (pThis->fNoProxy)
387	{
388	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_NOPROXY, (const char *)NULL);
389	AssertMsgReturn(rcCurl == CURLE_OK, ("CURLOPT_NOPROXY=NULL: %d (%#x)\n", rcCurl, rcCurl),
390	VERR_HTTP_CURL_PROXY_CONFIG);
391	pThis->fNoProxy = false;
392	}
393	#endif
394
395	if (enmProxyType != pThis->enmProxyType)
396	{
397	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_PROXYTYPE, (long)enmProxyType);
398	AssertMsgReturn(rcCurl == CURLE_OK, ("CURLOPT_PROXYTYPE=%d: %d (%#x)\n", enmProxyType, rcCurl, rcCurl),
399	VERR_HTTP_CURL_PROXY_CONFIG);
400	pThis->enmProxyType = CURLPROXY_HTTP;
401	}
402
403	if (uPort != pThis->uProxyPort)
404	{
405	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_PROXYPORT, (long)uPort);
406	AssertMsgReturn(rcCurl == CURLE_OK, ("CURLOPT_PROXYPORT=%d: %d (%#x)\n", uPort, rcCurl, rcCurl),
407	VERR_HTTP_CURL_PROXY_CONFIG);
408	pThis->uProxyPort = uPort;
409	}
410
411	if ( pszUsername != pThis->pszProxyUsername
412	\|\| RTStrCmp(pszUsername, pThis->pszProxyUsername))
413	{
414	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_PROXYUSERNAME, pszUsername);
415	AssertMsgReturn(rcCurl == CURLE_OK, ("CURLOPT_PROXYUSERNAME=%s: %d (%#x)\n", pszUsername, rcCurl, rcCurl),
416	VERR_HTTP_CURL_PROXY_CONFIG);
417	if (pThis->pszProxyUsername)
418	{
419	RTStrFree(pThis->pszProxyUsername);
420	pThis->pszProxyUsername = NULL;
421	}
422	if (pszUsername)
423	{
424	pThis->pszProxyUsername = RTStrDup(pszUsername);
425	AssertReturn(pThis->pszProxyUsername, VERR_NO_STR_MEMORY);
426	}
427	}
428
429	if ( pszPassword != pThis->pszProxyPassword
430	\|\| RTStrCmp(pszPassword, pThis->pszProxyPassword))
431	{
432	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_PROXYPASSWORD, pszPassword);
433	AssertMsgReturn(rcCurl == CURLE_OK, ("CURLOPT_PROXYPASSWORD=%s: %d (%#x)\n", pszPassword ? "xxx" : NULL, rcCurl, rcCurl),
434	VERR_HTTP_CURL_PROXY_CONFIG);
435	if (pThis->pszProxyPassword)
436	{
437	RTMemWipeThoroughly(pThis->pszProxyPassword, strlen(pThis->pszProxyPassword), 2);
438	RTStrFree(pThis->pszProxyPassword);
439	pThis->pszProxyPassword = NULL;
440	}
441	if (pszPassword)
442	{
443	pThis->pszProxyPassword = RTStrDup(pszPassword);
444	AssertReturn(pThis->pszProxyPassword, VERR_NO_STR_MEMORY);
445	}
446	}
447
448	if ( pszHost != pThis->pszProxyHost
449	\|\| RTStrCmp(pszHost, pThis->pszProxyHost))
450	{
451	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_PROXY, pszHost);
452	AssertMsgReturn(rcCurl == CURLE_OK, ("CURLOPT_PROXY=%s: %d (%#x)\n", pszHost, rcCurl, rcCurl),
453	VERR_HTTP_CURL_PROXY_CONFIG);
454	if (pThis->pszProxyHost)
455	{
456	RTStrFree(pThis->pszProxyHost);
457	pThis->pszProxyHost = NULL;
458	}
459	if (pszHost)
460	{
461	pThis->pszProxyHost = RTStrDup(pszHost);
462	AssertReturn(pThis->pszProxyHost, VERR_NO_STR_MEMORY);
463	}
464	}
465
466	return VINF_SUCCESS;
467	}
468
469
470	/**
471	* rtHttpConfigureProxyForUrl: Disables proxying.
472	*
473	* @returns IPRT status code.
474	* @param pThis The HTTP client instance.
475	*/
476	static int rtHttpUpdateAutomaticProxyDisable(PRTHTTPINTERNAL pThis)
477	{
478	Log(("rtHttpUpdateAutomaticProxyDisable: pThis=%p\n", pThis));
479
480	AssertReturn(curl_easy_setopt(pThis->pCurl, CURLOPT_PROXYTYPE, (long)CURLPROXY_HTTP) == CURLE_OK, VERR_INTERNAL_ERROR_2);
481	pThis->enmProxyType = CURLPROXY_HTTP;
482
483	AssertReturn(curl_easy_setopt(pThis->pCurl, CURLOPT_PROXYPORT, (long)1080) == CURLE_OK, VERR_INTERNAL_ERROR_2);
484	pThis->uProxyPort = 1080;
485
486	AssertReturn(curl_easy_setopt(pThis->pCurl, CURLOPT_PROXYUSERNAME, (const char *)NULL) == CURLE_OK, VERR_INTERNAL_ERROR_2);
487	if (pThis->pszProxyUsername)
488	{
489	RTStrFree(pThis->pszProxyUsername);
490	pThis->pszProxyUsername = NULL;
491	}
492
493	AssertReturn(curl_easy_setopt(pThis->pCurl, CURLOPT_PROXYPASSWORD, (const char *)NULL) == CURLE_OK, VERR_INTERNAL_ERROR_2);
494	if (pThis->pszProxyPassword)
495	{
496	RTStrFree(pThis->pszProxyPassword);
497	pThis->pszProxyPassword = NULL;
498	}
499
500	AssertReturn(curl_easy_setopt(pThis->pCurl, CURLOPT_PROXY, (const char *)NULL) == CURLE_OK, VERR_INTERNAL_ERROR_2);
501	if (pThis->pszProxyHost)
502	{
503	RTStrFree(pThis->pszProxyHost);
504	pThis->pszProxyHost = NULL;
505	}
506
507	#ifdef CURLOPT_NOPROXY
508	/* No proxy for everything! */
509	AssertReturn(curl_easy_setopt(pThis->pCurl, CURLOPT_NOPROXY, "*") == CURLE_OK, CURLOPT_PROXY);
510	pThis->fNoProxy = true;
511	#endif
512
513	return VINF_SUCCESS;
514	}
515
516
517	/**
518	* See if the host name of the URL is included in the stripped no_proxy list.
519	*
520	* The no_proxy list is a colon or space separated list of domain names for
521	* which there should be no proxying. Given "no_proxy=oracle.com" neither the
522	* URL "http://www.oracle.com" nor "http://oracle.com" will not be proxied, but
523	* "http://notoracle.com" will be.
524	*
525	* @returns true if the URL is in the no_proxy list, otherwise false.
526	* @param pszUrl The URL.
527	* @param pszNoProxyList The stripped no_proxy list.
528	*/
529	static bool rtHttpUrlInNoProxyList(const char pszUrl, const char pszNoProxyList)
530	{
531	/*
532	* Check for just '*', diabling proxying for everything.
533	* (Caller stripped pszNoProxyList.)
534	*/
535	if (pszNoProxyList == '' && pszNoProxyList[1] == '\0')
536	return true;
537
538	/*
539	* Empty list? (Caller stripped it, remember).
540	*/
541	if (!*pszNoProxyList)
542	return false;
543
544	/*
545	* We now need to parse the URL and extract the host name.
546	*/
547	RTURIPARSED Parsed;
548	int rc = RTUriParse(pszUrl, &Parsed);
549	AssertRCReturn(rc, false);
550	char *pszHost = RTUriParsedAuthorityHost(pszUrl, &Parsed);
551	if (!pszHost) /* Don't assert, in case of file:///xxx or similar blunder. */
552	return false;
553
554	bool fRet = false;
555	size_t const cchHost = strlen(pszHost);
556	if (cchHost)
557	{
558	/*
559	* The list is comma or space separated, walk it and match host names.
560	*/
561	while (*pszNoProxyList != '\0')
562	{
563	/* Strip leading slashes, commas and dots. */
564	char ch;
565	while ( (ch = *pszNoProxyList) == ','
566	\|\| ch == '.'
567	\|\| RT_C_IS_SPACE(ch))
568	pszNoProxyList++;
569
570	/* Find the end. */
571	size_t cch = RTStrOffCharOrTerm(pszNoProxyList, ',');
572	size_t offNext = RTStrOffCharOrTerm(pszNoProxyList, ' ');
573	cch = RT_MIN(cch, offNext);
574	offNext = cch;
575
576	/* Trip trailing spaces, well tabs and stuff. */
577	while (cch > 0 && RT_C_IS_SPACE(pszNoProxyList[cch - 1]))
578	cch--;
579
580	/* Do the matching, if we have anything to work with. */
581	if (cch > 0)
582	{
583	if ( ( cch == cchHost
584	&& RTStrNICmp(pszNoProxyList, pszHost, cch) == 0)
585	\|\| ( cch < cchHost
586	&& pszHost[cchHost - cch - 1] == '.'
587	&& RTStrNICmp(pszNoProxyList, &pszHost[cchHost - cch], cch) == 0) )
588	{
589	fRet = true;
590	break;
591	}
592	}
593
594	/* Next. */
595	pszNoProxyList += offNext;
596	}
597	}
598
599	RTStrFree(pszHost);
600	return fRet;
601	}
602
603
604	/**
605	* Configures a proxy given a "URL" like specification.
606	*
607	* The format is:
608	* @verbatim
609	* [<scheme>"://"][<userid>[@<password>]:]<server>[":"<port>]
610	* @endverbatim
611	*
612	* Where the scheme gives the type of proxy server we're dealing with rather
613	* than the protocol of the external server we wish to talk to.
614	*
615	* @returns IPRT status code.
616	* @param pThis The HTTP client instance.
617	* @param pszProxyUrl The proxy server "URL".
618	*/
619	static int rtHttpConfigureProxyFromUrl(PRTHTTPINTERNAL pThis, const char *pszProxyUrl)
620	{
621	/*
622	* Make sure it can be parsed as an URL.
623	*/
624	char *pszFreeMe = NULL;
625	if (!strstr(pszProxyUrl, "://"))
626	{
627	static const char s_szPrefix[] = "http://";
628	size_t cchProxyUrl = strlen(pszProxyUrl);
629	pszFreeMe = (char *)RTMemTmpAlloc(sizeof(s_szPrefix) + cchProxyUrl);
630	if (pszFreeMe)
631	{
632	memcpy(pszFreeMe, s_szPrefix, sizeof(s_szPrefix) - 1);
633	memcpy(&pszFreeMe[sizeof(s_szPrefix) - 1], pszProxyUrl, cchProxyUrl);
634	pszFreeMe[sizeof(s_szPrefix) - 1 + cchProxyUrl] = '\0';
635	pszProxyUrl = pszFreeMe;
636	}
637	else
638	return VERR_NO_TMP_MEMORY;
639	}
640
641	RTURIPARSED Parsed;
642	int rc = RTUriParse(pszProxyUrl, &Parsed);
643	if (RT_SUCCESS(rc))
644	{
645	char *pszHost = RTUriParsedAuthorityHost(pszProxyUrl, &Parsed);
646	if (pszHost)
647	{
648	/*
649	* We've got a host name, try get the rest.
650	*/
651	char *pszUsername = RTUriParsedAuthorityUsername(pszProxyUrl, &Parsed);
652	char *pszPassword = RTUriParsedAuthorityPassword(pszProxyUrl, &Parsed);
653	uint32_t uProxyPort = RTUriParsedAuthorityPort(pszProxyUrl, &Parsed);
654	curl_proxytype enmProxyType;
655	if (RTUriIsSchemeMatch(pszProxyUrl, "http"))
656	{
657	enmProxyType = CURLPROXY_HTTP;
658	if (uProxyPort == UINT32_MAX)
659	uProxyPort = 80;
660	}
661	else if ( RTUriIsSchemeMatch(pszProxyUrl, "socks4")
662	\|\| RTUriIsSchemeMatch(pszProxyUrl, "socks"))
663	enmProxyType = CURLPROXY_SOCKS4;
664	else if (RTUriIsSchemeMatch(pszProxyUrl, "socks4a"))
665	enmProxyType = CURLPROXY_SOCKS4A;
666	else if (RTUriIsSchemeMatch(pszProxyUrl, "socks5"))
667	enmProxyType = CURLPROXY_SOCKS5;
668	else if (RTUriIsSchemeMatch(pszProxyUrl, "socks5h"))
669	enmProxyType = CURLPROXY_SOCKS5_HOSTNAME;
670	else
671	{
672	enmProxyType = CURLPROXY_HTTP;
673	if (uProxyPort == UINT32_MAX)
674	uProxyPort = 8080;
675	}
676
677	/* Guess the port from the proxy type if not given. */
678	if (uProxyPort == UINT32_MAX)
679	uProxyPort = 1080; /* CURL_DEFAULT_PROXY_PORT */
680
681	rc = rtHttpUpdateProxyConfig(pThis, enmProxyType, pszHost, uProxyPort, pszUsername, pszPassword);
682
683	RTStrFree(pszUsername);
684	RTStrFree(pszPassword);
685	RTStrFree(pszHost);
686	}
687	else
688	AssertMsgFailed(("RTUriParsedAuthorityHost('%s',) -> NULL\n", pszProxyUrl));
689	}
690	else
691	AssertMsgFailed(("RTUriParse('%s',) -> %Rrc\n", pszProxyUrl, rc));
692
693	if (pszFreeMe)
694	RTMemTmpFree(pszFreeMe);
695	return rc;
696	}
697
698
699	/**
700	* Consults enviornment variables that cURL/lynx/wget/lynx uses for figuring out
701	* the proxy config.
702	*
703	* @returns IPRT status code.
704	* @param pThis The HTTP client instance.
705	* @param pszUrl The URL to configure a proxy for.
706	*/
707	static int rtHttpConfigureProxyForUrlFromEnv(PRTHTTPINTERNAL pThis, const char *pszUrl)
708	{
709	char szTmp[_1K];
710
711	/*
712	* First we consult the "no_proxy" / "NO_PROXY" environment variable.
713	*/
714	const char *pszNoProxyVar;
715	size_t cchActual;
716	char *pszNoProxyFree = NULL;
717	char *pszNoProxy = szTmp;
718	int rc = RTEnvGetEx(RTENV_DEFAULT, pszNoProxyVar = "no_proxy", szTmp, sizeof(szTmp), &cchActual);
719	if (rc == VERR_ENV_VAR_NOT_FOUND)
720	rc = RTEnvGetEx(RTENV_DEFAULT, pszNoProxyVar = "NO_PROXY", szTmp, sizeof(szTmp), &cchActual);
721	if (rc == VERR_BUFFER_OVERFLOW)
722	{
723	pszNoProxyFree = pszNoProxy = (char *)RTMemTmpAlloc(cchActual + _1K);
724	AssertReturn(pszNoProxy, VERR_NO_TMP_MEMORY);
725	rc = RTEnvGetEx(RTENV_DEFAULT, pszNoProxyVar, pszNoProxy, cchActual + _1K, NULL);
726	}
727	AssertMsg(rc == VINF_SUCCESS \|\| rc == VERR_ENV_VAR_NOT_FOUND, ("rc=%Rrc\n", rc));
728	bool fNoProxy = false;
729	if (RT_SUCCESS(rc))
730	fNoProxy = rtHttpUrlInNoProxyList(pszUrl, RTStrStrip(pszNoProxy));
731	RTMemTmpFree(pszNoProxyFree);
732	if (!fNoProxy)
733	{
734	/*
735	* Get the schema specific specific env var, falling back on the
736	* generic all_proxy if not found.
737	*/
738	const char *apszEnvVars[4];
739	unsigned cEnvVars = 0;
740	if (!RTStrNICmp(pszUrl, RT_STR_TUPLE("http:")))
741	apszEnvVars[cEnvVars++] = "http_proxy"; /* Skip HTTP_PROXY because of cgi paranoia */
742	else if (!RTStrNICmp(pszUrl, RT_STR_TUPLE("https:")))
743	{
744	apszEnvVars[cEnvVars++] = "https_proxy";
745	apszEnvVars[cEnvVars++] = "HTTPS_PROXY";
746	}
747	else if (!RTStrNICmp(pszUrl, RT_STR_TUPLE("ftp:")))
748	{
749	apszEnvVars[cEnvVars++] = "ftp_proxy";
750	apszEnvVars[cEnvVars++] = "FTP_PROXY";
751	}
752	else
753	AssertMsgFailedReturn(("Unknown/unsupported schema in URL: '%s'\n", pszUrl), VERR_NOT_SUPPORTED);
754	apszEnvVars[cEnvVars++] = "all_proxy";
755	apszEnvVars[cEnvVars++] = "ALL_PROXY";
756
757	/*
758	* We try the env vars out and goes with the first one we can make sense out of.
759	* If we cannot make sense of any, we return the first unexpected rc we got.
760	*/
761	rc = VINF_SUCCESS;
762	for (uint32_t i = 0; i < cEnvVars; i++)
763	{
764	size_t cchValue;
765	int rc2 = RTEnvGetEx(RTENV_DEFAULT, apszEnvVars[i], szTmp, sizeof(szTmp) - sizeof("http://"), &cchValue);
766	if (RT_SUCCESS(rc2))
767	{
768	if (cchValue != 0)
769	{
770	/* Add a http:// prefix so RTUriParse groks it (cheaper to do it here). */
771	if (!strstr(szTmp, "://"))
772	{
773	memmove(&szTmp[sizeof("http://") - 1], szTmp, cchValue + 1);
774	memcpy(szTmp, RT_STR_TUPLE("http://"));
775	}
776
777	rc2 = rtHttpConfigureProxyFromUrl(pThis, szTmp);
778	if (RT_SUCCESS(rc2))
779	rc = rc2;
780	}
781	/*
782	* The variable is empty. Guess that means no proxying wanted.
783	*/
784	else
785	{
786	rc = rtHttpUpdateAutomaticProxyDisable(pThis);
787	break;
788	}
789	}
790	else
791	AssertMsgStmt(rc2 == VERR_ENV_VAR_NOT_FOUND, ("%Rrc\n", rc2), if (RT_SUCCESS(rc)) rc = rc2);
792	}
793	}
794	/*
795	* The host is the no-proxy list, it seems.
796	*/
797	else
798	rc = rtHttpUpdateAutomaticProxyDisable(pThis);
799
800	return rc;
801	}
802
803	#ifdef IPRT_USE_LIBPROXY
804
805	/**
806	* @callback_method_impl{FNRTONCE,
807	* Attempts to load libproxy.so.1 and resolves APIs}
808	*/
809	static DECLCALLBACK(int) rtHttpLibProxyResolveImports(void *pvUser)
810	{
811	RTLDRMOD hMod;
812	int rc = RTLdrLoad("/usr/lib/libproxy.so.1", &hMod);
813	if (RT_SUCCESS(rc))
814	{
815	rc = RTLdrGetSymbol(hMod, "px_proxy_factory_new", (void **)&g_pfnLibProxyFactoryCtor);
816	if (RT_SUCCESS(rc))
817	rc = RTLdrGetSymbol(hMod, "px_proxy_factory_free", (void **)&g_pfnLibProxyFactoryDtor);
818	if (RT_SUCCESS(rc))
819	rc = RTLdrGetSymbol(hMod, "px_proxy_factory_get_proxies", (void **)&g_pfnLibProxyFactoryGetProxies);
820	if (RT_SUCCESS(rc))
821	g_hLdrLibProxy = hMod;
822	else
823	RTLdrClose(hMod);
824	AssertRC(rc);
825	}
826
827	NOREF(pvUser);
828	return rc;
829	}
830
831	/**
832	* Reconfigures the cURL proxy settings for the given URL, libproxy style.
833	*
834	* @returns IPRT status code. VINF_NOT_SUPPORTED if we should try fallback.
835	* @param pThis The HTTP client instance.
836	* @param pszUrl The URL.
837	*/
838	static int rtHttpLibProxyConfigureProxyForUrl(PRTHTTPINTERNAL pThis, const char *pszUrl)
839	{
840	int rcRet = VINF_NOT_SUPPORTED;
841
842	int rc = RTOnce(&g_LibProxyResolveImportsOnce, rtHttpLibProxyResolveImports, NULL);
843	if (RT_SUCCESS(rc))
844	{
845	/*
846	* Instance the factory and ask for a list of proxies.
847	*/
848	PLIBPROXYFACTORY pFactory = g_pfnLibProxyFactoryCtor();
849	if (pFactory)
850	{
851	char **papszProxies = g_pfnLibProxyFactoryGetProxies(pFactory, pszUrl);
852	g_pfnLibProxyFactoryDtor(pFactory);
853	if (papszProxies)
854	{
855	/*
856	* Look for something we can use.
857	*/
858	for (unsigned i = 0; papszProxies[i]; i++)
859	{
860	if (strncmp(papszProxies[i], RT_STR_TUPLE("direct://")) == 0)
861	rcRet = rtHttpUpdateAutomaticProxyDisable(pThis);
862	else if ( strncmp(papszProxies[i], RT_STR_TUPLE("http://")) == 0
863	\|\| strncmp(papszProxies[i], RT_STR_TUPLE("socks5://")) == 0
864	\|\| strncmp(papszProxies[i], RT_STR_TUPLE("socks4://")) == 0
865	\|\| strncmp(papszProxies[i], RT_STR_TUPLE("socks://")) == 0 /** @todo same problem as on OS X. */
866	)
867	rcRet = rtHttpConfigureProxyFromUrl(pThis, papszProxies[i]);
868	else
869	continue;
870	if (rcRet != VINF_NOT_SUPPORTED)
871	break;
872	}
873
874	/* free the result. */
875	for (unsigned i = 0; papszProxies[i]; i++)
876	free(papszProxies[i]);
877	free(papszProxies);
878	}
879	}
880	}
881
882	return rcRet;
883	}
884
885	#endif /* IPRT_USE_LIBPROXY */
886
887	#ifdef RT_OS_DARWIN
888
889	/**
890	* Get a boolean like integer value from a dictionary.
891	*
892	* @returns true / false.
893	* @param hDict The dictionary.
894	* @param pvKey The dictionary value key.
895	*/
896	static bool rtHttpDarwinGetBooleanFromDict(CFDictionaryRef hDict, void const *pvKey, bool fDefault)
897	{
898	CFNumberRef hNum = (CFNumberRef)CFDictionaryGetValue(hDict, pvKey);
899	if (hNum)
900	{
901	int fEnabled;
902	if (!CFNumberGetValue(hNum, kCFNumberIntType, &fEnabled))
903	return fDefault;
904	return fEnabled != 0;
905	}
906	return fDefault;
907	}
908
909
910	/**
911	* Creates a CFURL object for an URL.
912	*
913	* @returns CFURL object reference.
914	* @param pszUrl The URL.
915	*/
916	static CFURLRef rtHttpDarwinUrlToCFURL(const char *pszUrl)
917	{
918	CFURLRef hUrl = NULL;
919	CFStringRef hStrUrl = CFStringCreateWithCString(kCFAllocatorDefault, pszUrl, kCFStringEncodingUTF8);
920	if (hStrUrl)
921	{
922	CFStringRef hStrUrlEscaped = CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, hStrUrl,
923	NULL /charactersToLeaveUnescaped/,
924	NULL /legalURLCharactersToBeEscaped/,
925	kCFStringEncodingUTF8);
926	if (hStrUrlEscaped)
927	{
928	hUrl = CFURLCreateWithString(kCFAllocatorDefault, hStrUrlEscaped, NULL /baseURL/);
929	Assert(hUrl);
930	CFRelease(hStrUrlEscaped);
931	}
932	else
933	AssertFailed();
934	CFRelease(hStrUrl);
935	}
936	else
937	AssertFailed();
938	return hUrl;
939	}
940
941
942	/**
943	* For passing results from rtHttpDarwinPacCallback to
944	* rtHttpDarwinExecuteProxyAutoConfigurationUrl.
945	*/
946	typedef struct RTHTTPDARWINPACRESULT
947	{
948	CFArrayRef hArrayProxies;
949	CFErrorRef hError;
950	} RTHTTPDARWINPACRESULT;
951	typedef RTHTTPDARWINPACRESULT *PRTHTTPDARWINPACRESULT;
952
953	/**
954	* Stupid callback for getting the result from
955	* CFNetworkExecuteProxyAutoConfigurationURL.
956	*
957	* @param pvUser Pointer to a RTHTTPDARWINPACRESULT on the stack of
958	* rtHttpDarwinExecuteProxyAutoConfigurationUrl.
959	* @param hArrayProxies The result array.
960	* @param hError Errors, if any.
961	*/
962	static void rtHttpDarwinPacCallback(void *pvUser, CFArrayRef hArrayProxies, CFErrorRef hError)
963	{
964	PRTHTTPDARWINPACRESULT pResult = (PRTHTTPDARWINPACRESULT)pvUser;
965
966	Assert(pResult->hArrayProxies == NULL);
967	if (hArrayProxies)
968	pResult->hArrayProxies = (CFArrayRef)CFRetain(hArrayProxies);
969
970	Assert(pResult->hError == NULL);
971	if (hError)
972	pResult->hError = (CFErrorRef)CFRetain(hError);
973
974	CFRunLoopStop(CFRunLoopGetCurrent());
975	}
976
977
978	/**
979	* Executes a PAC script and returning the proxies it suggests.
980	*
981	* @returns Array of proxy configs (CFProxySupport.h style).
982	* @param hUrlTarget The URL we're about to use.
983	* @param hUrlScript The PAC script URL.
984	*/
985	static CFArrayRef rtHttpDarwinExecuteProxyAutoConfigurationUrl(CFURLRef hUrlTarget, CFURLRef hUrlScript)
986	{
987	char szTmp[256];
988	if (LogIsFlowEnabled())
989	{
990	szTmp[0] = '\0';
991	CFStringGetCString(CFURLGetString(hUrlScript), szTmp, sizeof(szTmp), kCFStringEncodingUTF8);
992	LogFlow(("rtHttpDarwinExecuteProxyAutoConfigurationUrl: hUrlScript=%p:%s\n", hUrlScript, szTmp));
993	}
994
995	/*
996	* Use CFNetworkExecuteProxyAutoConfigurationURL here so we don't have to
997	* download the script ourselves and mess around with too many CF APIs.
998	*/
999	CFRunLoopRef hRunLoop = CFRunLoopGetCurrent();
1000	AssertReturn(hRunLoop, NULL);
1001
1002	RTHTTPDARWINPACRESULT Result = { NULL, NULL };
1003	CFStreamClientContext Ctx = { 0, &Result, NULL, NULL, NULL };
1004	CFRunLoopSourceRef hRunLoopSrc = CFNetworkExecuteProxyAutoConfigurationURL(hUrlScript, hUrlTarget,
1005	rtHttpDarwinPacCallback, &Ctx);
1006	AssertReturn(hRunLoopSrc, NULL);
1007
1008	CFStringRef kMode = CFSTR("com.apple.dts.CFProxySupportTool");
1009	CFRunLoopAddSource(hRunLoop, hRunLoopSrc, kMode);
1010	CFRunLoopRunInMode(kMode, 1.0e10, false); /* callback will force a return. */
1011	CFRunLoopRemoveSource(hRunLoop, hRunLoopSrc, kMode);
1012
1013	/** @todo convert errors, maybe even fail. */
1014
1015	/*
1016	* Autoconfig (or missing wpad server) typically results in:
1017	* domain:kCFErrorDomainCFNetwork; code=kCFHostErrorUnknown (2).
1018	*
1019	* In the autoconfig case, it looks like we're getting two entries, first
1020	* one that's http://wpad/wpad.dat and a noproxy entry. So, no reason to
1021	* be very upset if this fails, just continue trying alternatives.
1022	*/
1023	if (Result.hError)
1024	{
1025	if (LogIsEnabled())
1026	{
1027	szTmp[0] = '\0';
1028	CFStringGetCString(CFErrorCopyDescription(Result.hError), szTmp, sizeof(szTmp), kCFStringEncodingUTF8);
1029	Log(("rtHttpDarwinExecuteProxyAutoConfigurationUrl: error! code=%ld desc='%s'\n", (long)CFErrorGetCode(Result.hError), szTmp));
1030	}
1031	CFRelease(Result.hError);
1032	}
1033	return Result.hArrayProxies;
1034	}
1035
1036
1037	/**
1038	* Attempt to configure the proxy according to @a hDictProxy.
1039	*
1040	* @returns IPRT status code. VINF_NOT_SUPPORTED if not able to configure it and
1041	* the caller should try out alternative proxy configs and fallbacks.
1042	* @param pThis The HTTP client instance.
1043	* @param hDictProxy The proxy configuration (see CFProxySupport.h).
1044	* @param hUrlTarget The URL we're about to use.
1045	* @param fIgnorePacType Whether to ignore PAC type proxy entries (i.e.
1046	* javascript URL). This is set when we're processing
1047	* the output from a PAC script.
1048	*/
1049	static int rtHttpDarwinTryConfigProxy(PRTHTTPINTERNAL pThis, CFDictionaryRef hDictProxy, CFURLRef hUrlTarget, bool fIgnorePacType)
1050	{
1051	CFStringRef hStrProxyType = (CFStringRef)CFDictionaryGetValue(hDictProxy, kCFProxyTypeKey);
1052	AssertReturn(hStrProxyType, VINF_NOT_SUPPORTED);
1053
1054	/*
1055	* No proxy is fairly simple and common.
1056	*/
1057	if (CFEqual(hStrProxyType, kCFProxyTypeNone))
1058	return rtHttpUpdateAutomaticProxyDisable(pThis);
1059
1060	/*
1061	* PAC URL means recursion, however we only do one level.
1062	*/
1063	if (CFEqual(hStrProxyType, kCFProxyTypeAutoConfigurationURL))
1064	{
1065	AssertReturn(!fIgnorePacType, VINF_NOT_SUPPORTED);
1066
1067	CFURLRef hUrlScript = (CFURLRef)CFDictionaryGetValue(hDictProxy, kCFProxyAutoConfigurationURLKey);
1068	AssertReturn(hUrlScript, VINF_NOT_SUPPORTED);
1069
1070	int rcRet = VINF_NOT_SUPPORTED;
1071	CFArrayRef hArray = rtHttpDarwinExecuteProxyAutoConfigurationUrl(hUrlTarget, hUrlScript);
1072	if (hArray)
1073	{
1074	rcRet = rtHttpDarwinTryConfigProxies(pThis, hArray, hUrlTarget, true /fIgnorePacType/);
1075	CFRelease(hArray);
1076	}
1077	return rcRet;
1078	}
1079
1080	/*
1081	* Determine the proxy type (not entirely sure about type == proxy type and
1082	* not scheme/protocol)...
1083	*/
1084	curl_proxytype enmProxyType = CURLPROXY_HTTP;
1085	uint32_t uDefaultProxyPort = 8080;
1086	if ( CFEqual(hStrProxyType, kCFProxyTypeHTTP)
1087	\|\| CFEqual(hStrProxyType, kCFProxyTypeHTTPS))
1088	{ /* defaults */ }
1089	else if (CFEqual(hStrProxyType, kCFProxyTypeSOCKS))
1090	{
1091	/** @todo All we get from darwin is 'SOCKS', no idea whether it's SOCK4 or
1092	* SOCK5 on the other side... Selecting SOCKS5 for now. */
1093	enmProxyType = CURLPROXY_SOCKS5;
1094	uDefaultProxyPort = 1080;
1095	}
1096	/* Unknown proxy type. */
1097	else
1098	return VINF_NOT_SUPPORTED;
1099
1100	/*
1101	* Extract the proxy configuration.
1102	*/
1103	/* The proxy host name. */
1104	char szHostname[_1K];
1105	CFStringRef hStr = (CFStringRef)CFDictionaryGetValue(hDictProxy, kCFProxyHostNameKey);
1106	AssertReturn(hStr, VINF_NOT_SUPPORTED);
1107	AssertReturn(CFStringGetCString(hStr, szHostname, sizeof(szHostname), kCFStringEncodingUTF8), VINF_NOT_SUPPORTED);
1108
1109	/* Get the port number (optional). */
1110	SInt32 iProxyPort;
1111	CFNumberRef hNum = (CFNumberRef)CFDictionaryGetValue(hDictProxy, kCFProxyPortNumberKey);
1112	if (hNum && CFNumberGetValue(hNum, kCFNumberSInt32Type, &iProxyPort))
1113	AssertMsgStmt(iProxyPort > 0 && iProxyPort < _64K, ("%d\n", iProxyPort), iProxyPort = uDefaultProxyPort);
1114	else
1115	iProxyPort = uDefaultProxyPort;
1116
1117	/* The proxy username. */
1118	char szUsername[256];
1119	hStr = (CFStringRef)CFDictionaryGetValue(hDictProxy, kCFProxyUsernameKey);
1120	if (hStr)
1121	AssertReturn(CFStringGetCString(hStr, szUsername, sizeof(szUsername), kCFStringEncodingUTF8), VINF_NOT_SUPPORTED);
1122	else
1123	szUsername[0] = '\0';
1124
1125	/* The proxy password. */
1126	char szPassword[384];
1127	hStr = (CFStringRef)CFDictionaryGetValue(hDictProxy, kCFProxyPasswordKey);
1128	if (hStr)
1129	AssertReturn(CFStringGetCString(hStr, szPassword, sizeof(szPassword), kCFStringEncodingUTF8), VINF_NOT_SUPPORTED);
1130	else
1131	szPassword[0] = '\0';
1132
1133	/*
1134	* Apply the proxy config.
1135	*/
1136	return rtHttpUpdateProxyConfig(pThis, enmProxyType, szHostname, iProxyPort,
1137	szUsername[0] ? szUsername : NULL, szPassword[0] ? szPassword : NULL);
1138	}
1139
1140
1141	/**
1142	* Try do proxy config for our HTTP client instance given an array of proxies.
1143	*
1144	* This is used with the output from a CFProxySupport.h API.
1145	*
1146	* @returns IPRT status code. VINF_NOT_SUPPORTED if not able to configure it and
1147	* we might want to try out fallbacks.
1148	* @param pThis The HTTP client instance.
1149	* @param hArrayProxies The proxies CFPRoxySupport have given us.
1150	* @param hUrlTarget The URL we're about to use.
1151	* @param fIgnorePacType Whether to ignore PAC type proxy entries (i.e.
1152	* javascript URL). This is set when we're processing
1153	* the output from a PAC script.
1154	*/
1155	static int rtHttpDarwinTryConfigProxies(PRTHTTPINTERNAL pThis, CFArrayRef hArrayProxies, CFURLRef hUrlTarget, bool fIgnorePacType)
1156	{
1157	int rcRet = VINF_NOT_SUPPORTED;
1158	CFIndex const cEntries = CFArrayGetCount(hArrayProxies);
1159	LogFlow(("rtHttpDarwinTryConfigProxies: cEntries=%d\n", cEntries));
1160	for (CFIndex i = 0; i < cEntries; i++)
1161	{
1162	CFDictionaryRef hDictProxy = (CFDictionaryRef)CFArrayGetValueAtIndex(hArrayProxies, i);
1163	AssertContinue(hDictProxy);
1164
1165	rcRet = rtHttpDarwinTryConfigProxy(pThis, hDictProxy, hUrlTarget, fIgnorePacType);
1166	if (rcRet != VINF_NOT_SUPPORTED)
1167	break;
1168	}
1169	return rcRet;
1170	}
1171
1172
1173	/**
1174	* Inner worker for rtHttpWinConfigureProxyForUrl.
1175	*
1176	* @returns IPRT status code. VINF_NOT_SUPPORTED if we should try fallback.
1177	* @param pThis The HTTP client instance.
1178	* @param pszUrl The URL.
1179	*/
1180	static int rtHttpDarwinConfigureProxyForUrlWorker(PRTHTTPINTERNAL pThis, CFDictionaryRef hDictProxies,
1181	const char pszUrl, const char pszHost)
1182	{
1183	CFArrayRef hArray;
1184
1185	/*
1186	* From what I can tell, the CFNetworkCopyProxiesForURL API doesn't apply
1187	* proxy exclusion rules (tested on 10.9). So, do that manually.
1188	*/
1189	RTNETADDRU HostAddr;
1190	int fIsHostIpv4Address = -1;
1191	char szTmp[_4K];
1192
1193	/* If we've got a simple hostname, something containing no dots, we must check
1194	whether such simple hostnames are excluded from proxying by default or not. */
1195	if (strchr(pszHost, '.') == NULL)
1196	{
1197	if (rtHttpDarwinGetBooleanFromDict(hDictProxies, kSCPropNetProxiesExcludeSimpleHostnames, false))
1198	return rtHttpUpdateAutomaticProxyDisable(pThis);
1199	fIsHostIpv4Address = false;
1200	}
1201
1202	/* Consult the exclusion list. This is an array of strings.
1203	This is very similar to what we do on windows. */
1204	hArray = (CFArrayRef)CFDictionaryGetValue(hDictProxies, kSCPropNetProxiesExceptionsList);
1205	if (hArray)
1206	{
1207	CFIndex const cEntries = CFArrayGetCount(hArray);
1208	for (CFIndex i = 0; i < cEntries; i++)
1209	{
1210	CFStringRef hStr = (CFStringRef)CFArrayGetValueAtIndex(hArray, i);
1211	AssertContinue(hStr);
1212	AssertContinue(CFStringGetCString(hStr, szTmp, sizeof(szTmp), kCFStringEncodingUTF8));
1213	RTStrToLower(szTmp);
1214
1215	bool fRet;
1216	if ( strchr(szTmp, '*')
1217	\|\| strchr(szTmp, '?'))
1218	fRet = RTStrSimplePatternMatch(szTmp, pszHost);
1219	else
1220	{
1221	if (fIsHostIpv4Address == -1)
1222	fIsHostIpv4Address = RT_SUCCESS(RTNetStrToIPv4Addr(pszHost, &HostAddr.IPv4));
1223	RTNETADDRIPV4 Network, Netmask;
1224	if ( fIsHostIpv4Address
1225	&& RT_SUCCESS(RTCidrStrToIPv4(szTmp, &Network, &Netmask)) )
1226	fRet = (HostAddr.IPv4.u & Netmask.u) == Network.u;
1227	else
1228	fRet = strcmp(szTmp, pszHost) == 0;
1229	}
1230	if (fRet)
1231	return rtHttpUpdateAutomaticProxyDisable(pThis);
1232	}
1233	}
1234
1235	#if 0 /* The start of a manual alternative to CFNetworkCopyProxiesForURL below, hopefully we won't need this. */
1236	/*
1237	* Is proxy auto config (PAC) enabled? If so, we must consult it first.
1238	*/
1239	if (rtHttpDarwinGetBooleanFromDict(hDictProxies, kSCPropNetProxiesProxyAutoConfigEnable, false))
1240	{
1241	/* Convert the auto config url string to a CFURL object. */
1242	CFStringRef hStrAutoConfigUrl = (CFStringRef)CFDictionaryGetValue(hDictProxies, kSCPropNetProxiesProxyAutoConfigURLString);
1243	if (hStrAutoConfigUrl)
1244	{
1245	if (CFStringGetCString(hStrAutoConfigUrl, szTmp, sizeof(szTmp), kCFStringEncodingUTF8))
1246	{
1247	CFURLRef hUrlScript = rtHttpDarwinUrlToCFURL(szTmp);
1248	if (hUrlScript)
1249	{
1250	int rcRet = VINF_NOT_SUPPORTED;
1251	CFURLRef hUrlTarget = rtHttpDarwinUrlToCFURL(pszUrl);
1252	if (hUrlTarget)
1253	{
1254	/* Work around for <rdar://problem/5530166>, whatever that is. Initializes
1255	some internal CFNetwork state, they say. See CFPRoxySupportTool example. */
1256	hArray = CFNetworkCopyProxiesForURL(hUrlTarget, NULL);
1257	if (hArray)
1258	CFRelease(hArray);
1259
1260	hArray = rtHttpDarwinExecuteProxyAutoConfigurationUrl(hUrlTarget, hUrlScript);
1261	if (hArray)
1262	{
1263	rcRet = rtHttpDarwinTryConfigProxies(pThis, hArray, hUrlTarget, true /fIgnorePacType/);
1264	CFRelease(hArray);
1265	}
1266	}
1267	CFRelease(hUrlScript);
1268	if (rcRet != VINF_NOT_SUPPORTED)
1269	return rcRet;
1270	}
1271	}
1272	}
1273	}
1274
1275	/*
1276	* Try static proxy configs.
1277	*/
1278	/** @todo later if needed. */
1279	return VERR_NOT_SUPPORTED;
1280
1281	#else
1282	/*
1283	* Simple solution - "just" use CFNetworkCopyProxiesForURL.
1284	*/
1285	CFURLRef hUrlTarget = rtHttpDarwinUrlToCFURL(pszUrl);
1286	AssertReturn(hUrlTarget, VERR_INTERNAL_ERROR);
1287	int rcRet = VINF_NOT_SUPPORTED;
1288
1289	/* Work around for <rdar://problem/5530166>, whatever that is. Initializes
1290	some internal CFNetwork state, they say. See CFPRoxySupportTool example. */
1291	hArray = CFNetworkCopyProxiesForURL(hUrlTarget, NULL);
1292	if (hArray)
1293	CFRelease(hArray);
1294
1295	/* The actual run. */
1296	hArray = CFNetworkCopyProxiesForURL(hUrlTarget, hDictProxies);
1297	if (hArray)
1298	{
1299	rcRet = rtHttpDarwinTryConfigProxies(pThis, hArray, hUrlTarget, false /fIgnorePacType/);
1300	CFRelease(hArray);
1301	}
1302	CFRelease(hUrlTarget);
1303
1304	return rcRet;
1305	#endif
1306	}
1307
1308	/**
1309	* Reconfigures the cURL proxy settings for the given URL, OS X style.
1310	*
1311	* @returns IPRT status code. VINF_NOT_SUPPORTED if we should try fallback.
1312	* @param pThis The HTTP client instance.
1313	* @param pszUrl The URL.
1314	*/
1315	static int rtHttpDarwinConfigureProxyForUrl(PRTHTTPINTERNAL pThis, const char *pszUrl)
1316	{
1317	/*
1318	* Parse the URL, if there isn't any host name (like for file:///xxx.txt)
1319	* we don't need to run thru proxy settings to know what to do.
1320	*/
1321	RTURIPARSED Parsed;
1322	int rc = RTUriParse(pszUrl, &Parsed);
1323	AssertRCReturn(rc, false);
1324	if (Parsed.cchAuthorityHost == 0)
1325	return rtHttpUpdateAutomaticProxyDisable(pThis);
1326	char *pszHost = RTUriParsedAuthorityHost(pszUrl, &Parsed);
1327	AssertReturn(pszHost, VERR_NO_STR_MEMORY);
1328	RTStrToLower(pszHost);
1329
1330	/*
1331	* Get a copy of the proxy settings (10.6 API).
1332	*/
1333	CFDictionaryRef hDictProxies = CFNetworkCopySystemProxySettings(); /* Alt for 10.5: SCDynamicStoreCopyProxies(NULL); */
1334	if (hDictProxies)
1335	rc = rtHttpDarwinConfigureProxyForUrlWorker(pThis, hDictProxies, pszUrl, pszHost);
1336	else
1337	rc = VINF_NOT_SUPPORTED;
1338	CFRelease(hDictProxies);
1339
1340	RTStrFree(pszHost);
1341	return rc;
1342	}
1343
1344	#endif /* RT_OS_DARWIN */
1345
1346	#ifdef RT_OS_WINDOWS
1347
1348	/**
1349	* @callback_method_impl{FNRTONCE, Loads WinHttp.dll and resolves APIs}
1350	*/
1351	static DECLCALLBACK(int) rtHttpWinResolveImports(void *pvUser)
1352	{
1353	/*
1354	* winhttp.dll is not present on NT4 and probably was first introduced with XP.
1355	*/
1356	RTLDRMOD hMod;
1357	int rc = RTLdrLoadSystem("winhttp.dll", true /fNoUnload/, &hMod);
1358	if (RT_SUCCESS(rc))
1359	{
1360	rc = RTLdrGetSymbol(hMod, "WinHttpOpen", (void **)&g_pfnWinHttpOpen);
1361	if (RT_SUCCESS(rc))
1362	rc = RTLdrGetSymbol(hMod, "WinHttpCloseHandle", (void **)&g_pfnWinHttpCloseHandle);
1363	if (RT_SUCCESS(rc))
1364	rc = RTLdrGetSymbol(hMod, "WinHttpGetProxyForUrl", (void **)&g_pfnWinHttpGetProxyForUrl);
1365	if (RT_SUCCESS(rc))
1366	rc = RTLdrGetSymbol(hMod, "WinHttpGetDefaultProxyConfiguration", (void **)&g_pfnWinHttpGetDefaultProxyConfiguration);
1367	if (RT_SUCCESS(rc))
1368	rc = RTLdrGetSymbol(hMod, "WinHttpGetIEProxyConfigForCurrentUser", (void **)&g_pfnWinHttpGetIEProxyConfigForCurrentUser);
1369	RTLdrClose(hMod);
1370	AssertRC(rc);
1371	}
1372	else
1373	AssertMsg(g_enmWinVer < kRTWinOSType_XP, ("%Rrc\n", rc));
1374
1375	NOREF(pvUser);
1376	return rc;
1377	}
1378
1379
1380	/**
1381	* Matches the URL against the given Windows by-pass list.
1382	*
1383	* @returns true if we should by-pass the proxy for this URL, false if not.
1384	* @param pszUrl The URL.
1385	* @param pwszBypass The Windows by-pass list.
1386	*/
1387	static bool rtHttpWinIsUrlInBypassList(const char *pszUrl, PCRTUTF16 pwszBypass)
1388	{
1389	/*
1390	* Don't bother parsing the URL if we've actually got nothing to work with
1391	* in the by-pass list.
1392	*/
1393	if (!pwszBypass)
1394	return false;
1395
1396	RTUTF16 wc;
1397	while ( (wc = *pwszBypass) != '\0'
1398	&& ( RTUniCpIsSpace(wc)
1399	\|\| wc == ';') )
1400	pwszBypass++;
1401	if (wc == '\0')
1402	return false;
1403
1404	/*
1405	* We now need to parse the URL and extract the host name.
1406	*/
1407	RTURIPARSED Parsed;
1408	int rc = RTUriParse(pszUrl, &Parsed);
1409	AssertRCReturn(rc, false);
1410	char *pszHost = RTUriParsedAuthorityHost(pszUrl, &Parsed);
1411	if (!pszHost) /* Don't assert, in case of file:///xxx or similar blunder. */
1412	return false;
1413	RTStrToLower(pszHost);
1414
1415	bool fRet = false;
1416	char *pszBypassFree;
1417	rc = RTUtf16ToUtf8(pwszBypass, &pszBypassFree);
1418	if (RT_SUCCESS(rc))
1419	{
1420	/*
1421	* Walk the by-pass list.
1422	*
1423	* According to https://msdn.microsoft.com/en-us/library/aa384098(v=vs.85).aspx
1424	* a by-pass list is semicolon delimited list. The entries are either host
1425	* names or IP addresses, and may use wildcard ('*', '?', I guess). There
1426	* special "<local>" entry matches anything without a dot.
1427	*/
1428	RTNETADDRU HostAddr = { 0, 0 };
1429	int fIsHostIpv4Address = -1;
1430	char *pszEntry = pszBypassFree;
1431	while (*pszEntry != '\0')
1432	{
1433	/*
1434	* Find end of entry.
1435	*/
1436	char ch;
1437	size_t cchEntry = 1;
1438	while ( (ch = pszEntry[cchEntry]) != '\0'
1439	&& ch != ';'
1440	&& !RT_C_IS_SPACE(ch))
1441	cchEntry++;
1442
1443	char chSaved = pszEntry[cchEntry];
1444	pszEntry[cchEntry] = '\0';
1445	RTStrToLower(pszEntry);
1446
1447	if ( cchEntry == sizeof("<local>") - 1
1448	&& memcmp(pszEntry, RT_STR_TUPLE("<local>")) == 0)
1449	fRet = strchr(pszHost, '.') == NULL;
1450	else if ( memchr(pszEntry, '*', cchEntry) != NULL
1451	\|\| memchr(pszEntry, '?', cchEntry) != NULL)
1452	fRet = RTStrSimplePatternMatch(pszEntry, pszHost);
1453	else
1454	{
1455	if (fIsHostIpv4Address == -1)
1456	fIsHostIpv4Address = RT_SUCCESS(RTNetStrToIPv4Addr(pszHost, &HostAddr.IPv4));
1457	RTNETADDRIPV4 Network, Netmask;
1458	if ( fIsHostIpv4Address
1459	&& RT_SUCCESS(RTCidrStrToIPv4(pszEntry, &Network, &Netmask)) )
1460	fRet = (HostAddr.IPv4.u & Netmask.u) == Network.u;
1461	else
1462	fRet = strcmp(pszEntry, pszHost) == 0;
1463	}
1464
1465	pszEntry[cchEntry] = chSaved;
1466	if (fRet)
1467	break;
1468
1469	/*
1470	* Next entry.
1471	*/
1472	pszEntry += cchEntry;
1473	while ( (ch = *pszEntry) != '\0'
1474	&& ( ch == ';'
1475	\|\| RT_C_IS_SPACE(ch)) )
1476	pszEntry++;
1477	}
1478
1479	RTStrFree(pszBypassFree);
1480	}
1481
1482	RTStrFree(pszHost);
1483	return false;
1484	}
1485
1486
1487	/**
1488	* Searches a Windows proxy server list for the best fitting proxy to use, then
1489	* reconfigures the HTTP client instance to use it.
1490	*
1491	* @returns IPRT status code, VINF_NOT_SUPPORTED if we need to consult fallback.
1492	* @param pThis The HTTP client instance.
1493	* @param pszUrl The URL needing proxying.
1494	* @param pwszProxies The list of proxy servers to choose from.
1495	*/
1496	static int rtHttpWinSelectProxyFromList(PRTHTTPINTERNAL pThis, const char *pszUrl, PCRTUTF16 pwszProxies)
1497	{
1498	/*
1499	* Fend off empty strings (very unlikely, but just in case).
1500	*/
1501	if (!pwszProxies)
1502	return VINF_NOT_SUPPORTED;
1503
1504	RTUTF16 wc;
1505	while ( (wc = *pwszProxies) != '\0'
1506	&& ( RTUniCpIsSpace(wc)
1507	\|\| wc == ';') )
1508	pwszProxies++;
1509	if (wc == '\0')
1510	return VINF_NOT_SUPPORTED;
1511
1512	/*
1513	* We now need to parse the URL and extract the scheme.
1514	*/
1515	RTURIPARSED Parsed;
1516	int rc = RTUriParse(pszUrl, &Parsed);
1517	AssertRCReturn(rc, false);
1518	char *pszUrlScheme = RTUriParsedScheme(pszUrl, &Parsed);
1519	AssertReturn(pszUrlScheme, VERR_NO_STR_MEMORY);
1520	size_t const cchUrlScheme = strlen(pszUrlScheme);
1521
1522	int rcRet = VINF_NOT_SUPPORTED;
1523	char *pszProxiesFree;
1524	rc = RTUtf16ToUtf8(pwszProxies, &pszProxiesFree);
1525	if (RT_SUCCESS(rc))
1526	{
1527	/*
1528	* Walk the server list.
1529	*
1530	* According to https://msdn.microsoft.com/en-us/library/aa383912(v=vs.85).aspx
1531	* this is also a semicolon delimited list. The entries are on the form:
1532	* [<scheme>=][<scheme>"://"]<server>[":"<port>]
1533	*/
1534	bool fBestEntryHasSameScheme = false;
1535	const char *pszBestEntry = NULL;
1536	char *pszEntry = pszProxiesFree;
1537	while (*pszEntry != '\0')
1538	{
1539	/*
1540	* Find end of entry. We include spaces here in addition to ';'.
1541	*/
1542	char ch;
1543	size_t cchEntry = 1;
1544	while ( (ch = pszEntry[cchEntry]) != '\0'
1545	&& ch != ';'
1546	&& !RT_C_IS_SPACE(ch))
1547	cchEntry++;
1548
1549	char const chSaved = pszEntry[cchEntry];
1550	pszEntry[cchEntry] = '\0';
1551
1552	/* Parse the entry. */
1553	const char *pszEndOfScheme = strstr(pszEntry, "://");
1554	const char pszEqual = (const char )memchr(pszEntry, '=',
1555	pszEndOfScheme ? pszEndOfScheme - pszEntry : cchEntry);
1556	if (pszEqual)
1557	{
1558	if ( (uintptr_t)(pszEqual - pszEntry) == cchUrlScheme
1559	&& RTStrNICmp(pszEntry, pszUrlScheme, cchUrlScheme) == 0)
1560	{
1561	pszBestEntry = pszEqual + 1;
1562	break;
1563	}
1564	}
1565	else
1566	{
1567	bool fSchemeMatch = pszEndOfScheme
1568	&& (uintptr_t)(pszEndOfScheme - pszEntry) == cchUrlScheme
1569	&& RTStrNICmp(pszEntry, pszUrlScheme, cchUrlScheme) == 0;
1570	if ( !pszBestEntry
1571	\|\| ( !fBestEntryHasSameScheme
1572	&& fSchemeMatch) )
1573	{
1574	pszBestEntry = pszEntry;
1575	fBestEntryHasSameScheme = fSchemeMatch;
1576	}
1577	}
1578
1579	/*
1580	* Next entry.
1581	*/
1582	if (!chSaved)
1583	break;
1584	pszEntry += cchEntry + 1;
1585	while ( (ch = *pszEntry) != '\0'
1586	&& ( ch == ';'
1587	\|\| RT_C_IS_SPACE(ch)) )
1588	pszEntry++;
1589	}
1590
1591	/*
1592	* If we found something, try use it.
1593	*/
1594	if (pszBestEntry)
1595	rcRet = rtHttpConfigureProxyFromUrl(pThis, pszBestEntry);
1596
1597	RTStrFree(pszProxiesFree);
1598	}
1599
1600	RTStrFree(pszUrlScheme);
1601	return rc;
1602	}
1603
1604
1605	/**
1606	* Reconfigures the cURL proxy settings for the given URL, Windows style.
1607	*
1608	* @returns IPRT status code. VINF_NOT_SUPPORTED if we should try fallback.
1609	* @param pThis The HTTP client instance.
1610	* @param pszUrl The URL.
1611	*/
1612	static int rtHttpWinConfigureProxyForUrl(PRTHTTPINTERNAL pThis, const char *pszUrl)
1613	{
1614	int rcRet = VINF_NOT_SUPPORTED;
1615
1616	int rc = RTOnce(&g_WinResolveImportsOnce, rtHttpWinResolveImports, NULL);
1617	if (RT_SUCCESS(rc))
1618	{
1619	/*
1620	* Try get some proxy info for the URL. We first try getting the IE
1621	* config and seeing if we can use WinHttpGetIEProxyConfigForCurrentUser
1622	* in some way, if we can we prepare ProxyOptions with a non-zero dwFlags.
1623	*/
1624	WINHTTP_PROXY_INFO ProxyInfo;
1625	WINHTTP_AUTOPROXY_OPTIONS AutoProxyOptions;
1626	RT_ZERO(AutoProxyOptions);
1627	RT_ZERO(ProxyInfo);
1628
1629	WINHTTP_CURRENT_USER_IE_PROXY_CONFIG IeProxyConfig;
1630	if (g_pfnWinHttpGetIEProxyConfigForCurrentUser(&IeProxyConfig))
1631	{
1632	AutoProxyOptions.fAutoLogonIfChallenged = FALSE;
1633	AutoProxyOptions.lpszAutoConfigUrl = IeProxyConfig.lpszAutoConfigUrl;
1634	if (IeProxyConfig.fAutoDetect)
1635	{
1636	AutoProxyOptions.dwFlags = WINHTTP_AUTOPROXY_AUTO_DETECT \| WINHTTP_AUTOPROXY_RUN_INPROCESS;
1637	AutoProxyOptions.dwAutoDetectFlags = WINHTTP_AUTO_DETECT_TYPE_DHCP \| WINHTTP_AUTO_DETECT_TYPE_DNS_A;
1638	}
1639	else if (AutoProxyOptions.lpszAutoConfigUrl)
1640	AutoProxyOptions.dwFlags = WINHTTP_AUTOPROXY_CONFIG_URL;
1641	else if (ProxyInfo.lpszProxy)
1642	ProxyInfo.dwAccessType = WINHTTP_ACCESS_TYPE_NAMED_PROXY;
1643	ProxyInfo.lpszProxy = IeProxyConfig.lpszProxy;
1644	ProxyInfo.lpszProxyBypass = IeProxyConfig.lpszProxyBypass;
1645	}
1646	else
1647	{
1648	AssertMsgFailed(("WinHttpGetIEProxyConfigForCurrentUser -> %u\n", GetLastError()));
1649	if (!g_pfnWinHttpGetDefaultProxyConfiguration(&ProxyInfo))
1650	{
1651	AssertMsgFailed(("WinHttpGetDefaultProxyConfiguration -> %u\n", GetLastError()));
1652	RT_ZERO(ProxyInfo);
1653	}
1654	}
1655
1656	/*
1657	* Should we try WinHttGetProxyForUrl?
1658	*/
1659	if (AutoProxyOptions.dwFlags != 0)
1660	{
1661	HINTERNET hSession = g_pfnWinHttpOpen(NULL /pwszUserAgent/, WINHTTP_ACCESS_TYPE_NO_PROXY,
1662	WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, 0 /dwFlags/ );
1663	if (hSession != NULL)
1664	{
1665	PRTUTF16 pwszUrl;
1666	rc = RTStrToUtf16(pszUrl, &pwszUrl);
1667	if (RT_SUCCESS(rc))
1668	{
1669	/*
1670	* Try autodetect first, then fall back on the config URL if there is one.
1671	*
1672	* Also, we first try without auto authentication, then with. This will according
1673	* to http://msdn.microsoft.com/en-us/library/aa383153%28v=VS.85%29.aspx help with
1674	* caching the result when it's processed out-of-process (seems default here on W10).
1675	*/
1676	WINHTTP_PROXY_INFO TmpProxyInfo;
1677	BOOL fRc = g_pfnWinHttpGetProxyForUrl(hSession, pwszUrl, &AutoProxyOptions, &TmpProxyInfo);
1678	if ( !fRc
1679	&& GetLastError() == ERROR_WINHTTP_LOGIN_FAILURE)
1680	{
1681	AutoProxyOptions.fAutoLogonIfChallenged = TRUE;
1682	fRc = g_pfnWinHttpGetProxyForUrl(hSession, pwszUrl, &AutoProxyOptions, &TmpProxyInfo);
1683	}
1684
1685	if ( !fRc
1686	&& AutoProxyOptions.dwFlags != WINHTTP_AUTOPROXY_CONFIG_URL
1687	&& AutoProxyOptions.lpszAutoConfigUrl)
1688	{
1689	AutoProxyOptions.fAutoLogonIfChallenged = FALSE;
1690	AutoProxyOptions.dwFlags = WINHTTP_AUTOPROXY_CONFIG_URL;
1691	AutoProxyOptions.dwAutoDetectFlags = 0;
1692	fRc = g_pfnWinHttpGetProxyForUrl(hSession, pwszUrl, &AutoProxyOptions, &TmpProxyInfo);
1693	if ( !fRc
1694	&& GetLastError() == ERROR_WINHTTP_LOGIN_FAILURE)
1695	{
1696	AutoProxyOptions.fAutoLogonIfChallenged = TRUE;
1697	fRc = g_pfnWinHttpGetProxyForUrl(hSession, pwszUrl, &AutoProxyOptions, &TmpProxyInfo);
1698	}
1699	}
1700
1701	if (fRc)
1702	{
1703	if (ProxyInfo.lpszProxy)
1704	GlobalFree(ProxyInfo.lpszProxy);
1705	if (ProxyInfo.lpszProxyBypass)
1706	GlobalFree(ProxyInfo.lpszProxyBypass);
1707	ProxyInfo = TmpProxyInfo;
1708	}
1709	/*
1710	* If the autodetection failed, assume no proxy.
1711	*/
1712	else
1713	{
1714	DWORD dwErr = GetLastError();
1715	if (dwErr == ERROR_WINHTTP_AUTODETECTION_FAILED)
1716	rcRet = rtHttpUpdateAutomaticProxyDisable(pThis);
1717	else
1718	AssertMsgFailed(("g_pfnWinHttpGetProxyForUrl -> %u\n", dwErr));
1719	}
1720	RTUtf16Free(pwszUrl);
1721	}
1722	else
1723	{
1724	AssertMsgFailed(("RTStrToUtf16(%s,) -> %Rrc\n", pszUrl, rc));
1725	rcRet = rc;
1726	}
1727	g_pfnWinHttpCloseHandle(hSession);
1728	}
1729	else
1730	AssertMsgFailed(("g_pfnWinHttpOpen -> %u\n", GetLastError()));
1731	}
1732
1733	/*
1734	* Try use the proxy info we've found.
1735	*/
1736	switch (ProxyInfo.dwAccessType)
1737	{
1738	case WINHTTP_ACCESS_TYPE_NO_PROXY:
1739	rcRet = rtHttpUpdateAutomaticProxyDisable(pThis);
1740	break;
1741
1742	case WINHTTP_ACCESS_TYPE_NAMED_PROXY:
1743	if (!rtHttpWinIsUrlInBypassList(pszUrl, ProxyInfo.lpszProxyBypass))
1744	rcRet = rtHttpWinSelectProxyFromList(pThis, pszUrl, ProxyInfo.lpszProxy);
1745	else
1746	rcRet = rtHttpUpdateAutomaticProxyDisable(pThis);
1747	break;
1748
1749	case 0:
1750	break;
1751
1752	default:
1753	AssertMsgFailed(("%#x\n", ProxyInfo.dwAccessType));
1754	}
1755
1756	/*
1757	* Cleanup.
1758	*/
1759	if (ProxyInfo.lpszProxy)
1760	GlobalFree(ProxyInfo.lpszProxy);
1761	if (ProxyInfo.lpszProxyBypass)
1762	GlobalFree(ProxyInfo.lpszProxyBypass);
1763	if (AutoProxyOptions.lpszAutoConfigUrl)
1764	GlobalFree((PRTUTF16)AutoProxyOptions.lpszAutoConfigUrl);
1765	}
1766
1767	return rcRet;
1768	}
1769
1770	#endif /* RT_OS_WINDOWS */
1771
1772
1773	static int rtHttpConfigureProxyForUrl(PRTHTTPINTERNAL pThis, const char *pszUrl)
1774	{
1775	if (pThis->fUseSystemProxySettings)
1776	{
1777	#ifdef IPRT_USE_LIBPROXY
1778	int rc = rtHttpLibProxyConfigureProxyForUrl(pThis, pszUrl);
1779	if (rc == VINF_SUCCESS \|\| RT_FAILURE(rc))
1780	return rc;
1781	Assert(rc == VINF_NOT_SUPPORTED);
1782	#endif
1783	#ifdef RT_OS_DARWIN
1784	int rc = rtHttpDarwinConfigureProxyForUrl(pThis, pszUrl);
1785	if (rc == VINF_SUCCESS \|\| RT_FAILURE(rc))
1786	return rc;
1787	Assert(rc == VINF_NOT_SUPPORTED);
1788	#endif
1789	#ifdef RT_OS_WINDOWS
1790	int rc = rtHttpWinConfigureProxyForUrl(pThis, pszUrl);
1791	if (rc == VINF_SUCCESS \|\| RT_FAILURE(rc))
1792	return rc;
1793	Assert(rc == VINF_NOT_SUPPORTED);
1794	#endif
1795	/** @todo system specific class here, fall back on env vars if necessary. */
1796	return rtHttpConfigureProxyForUrlFromEnv(pThis, pszUrl);
1797	}
1798
1799	return VINF_SUCCESS;
1800	}
1801
1802
1803	RTR3DECL(int) RTHttpSetProxy(RTHTTP hHttp, const char *pcszProxy, uint32_t uPort,
1804	const char pcszProxyUser, const char pcszProxyPwd)
1805	{
1806	PRTHTTPINTERNAL pThis = hHttp;
1807	RTHTTP_VALID_RETURN(pThis);
1808	AssertPtrReturn(pcszProxy, VERR_INVALID_PARAMETER);
1809	AssertReturn(!pThis->fBusy, VERR_WRONG_ORDER);
1810
1811	/*
1812	* Update the settings.
1813	*
1814	* Currently, we don't make alot of effort parsing or checking the input, we
1815	* leave that to cURL. (A bit afraid of breaking user settings.)
1816	*/
1817	pThis->fUseSystemProxySettings = false;
1818	return rtHttpUpdateProxyConfig(pThis, CURLPROXY_HTTP, pcszProxy, uPort ? uPort : 1080, pcszProxyUser, pcszProxyPwd);
1819	}
1820
1821
1822	RTR3DECL(int) RTHttpSetHeaders(RTHTTP hHttp, size_t cHeaders, const char * const *papszHeaders)
1823	{
1824	PRTHTTPINTERNAL pThis = hHttp;
1825	RTHTTP_VALID_RETURN(pThis);
1826
1827	pThis->fHaveUserAgentHeader = false;
1828	if (!cHeaders)
1829	{
1830	if (pThis->pHeaders)
1831	curl_slist_free_all(pThis->pHeaders);
1832	pThis->pHeaders = 0;
1833	return VINF_SUCCESS;
1834	}
1835
1836	struct curl_slist *pHeaders = NULL;
1837	for (size_t i = 0; i < cHeaders; i++)
1838	{
1839	pHeaders = curl_slist_append(pHeaders, papszHeaders[i]);
1840	if (strncmp(papszHeaders[i], RT_STR_TUPLE("User-Agent:")) == 0)
1841	pThis->fHaveUserAgentHeader = true;
1842	}
1843
1844	pThis->pHeaders = pHeaders;
1845	int rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_HTTPHEADER, pHeaders);
1846	if (CURL_FAILURE(rcCurl))
1847	return VERR_INVALID_PARAMETER;
1848
1849	/*
1850	* Unset the user agent if it's in one of the headers.
1851	*/
1852	if ( pThis->fHaveUserAgentHeader
1853	&& pThis->fHaveSetUserAgent)
1854	{
1855	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_USERAGENT, (char *)NULL);
1856	Assert(CURL_SUCCESS(rcCurl));
1857	pThis->fHaveSetUserAgent = false;
1858	}
1859
1860	return VINF_SUCCESS;
1861	}
1862
1863
1864	/**
1865	* Set the CA file to NULL, deleting any temporary file if necessary.
1866	*
1867	* @param pThis The HTTP/HTTPS client instance.
1868	*/
1869	static void rtHttpUnsetCaFile(PRTHTTPINTERNAL pThis)
1870	{
1871	if (pThis->pszCaFile)
1872	{
1873	if (pThis->fDeleteCaFile)
1874	{
1875	int rc2 = RTFileDelete(pThis->pszCaFile); RT_NOREF_PV(rc2);
1876	AssertMsg(RT_SUCCESS(rc2) \|\| !RTFileExists(pThis->pszCaFile), ("rc=%Rrc '%s'\n", rc2, pThis->pszCaFile));
1877	}
1878	RTStrFree(pThis->pszCaFile);
1879	pThis->pszCaFile = NULL;
1880	}
1881	}
1882
1883
1884	RTR3DECL(int) RTHttpSetCAFile(RTHTTP hHttp, const char *pszCaFile)
1885	{
1886	PRTHTTPINTERNAL pThis = hHttp;
1887	RTHTTP_VALID_RETURN(pThis);
1888
1889	rtHttpUnsetCaFile(pThis);
1890
1891	pThis->fDeleteCaFile = false;
1892	if (pszCaFile)
1893	return RTStrDupEx(&pThis->pszCaFile, pszCaFile);
1894	return VINF_SUCCESS;
1895	}
1896
1897
1898	RTR3DECL(int) RTHttpUseTemporaryCaFile(RTHTTP hHttp, PRTERRINFO pErrInfo)
1899	{
1900	PRTHTTPINTERNAL pThis = hHttp;
1901	RTHTTP_VALID_RETURN(pThis);
1902
1903	/*
1904	* Create a temporary file.
1905	*/
1906	int rc = VERR_NO_STR_MEMORY;
1907	char *pszCaFile = RTStrAlloc(RTPATH_MAX);
1908	if (pszCaFile)
1909	{
1910	RTFILE hFile;
1911	rc = RTFileOpenTemp(&hFile, pszCaFile, RTPATH_MAX,
1912	RTFILE_O_CREATE \| RTFILE_O_WRITE \| RTFILE_O_DENY_NONE \| (0600 << RTFILE_O_CREATE_MODE_SHIFT));
1913	if (RT_SUCCESS(rc))
1914	{
1915	/*
1916	* Gather certificates into a temporary store and export them to the temporary file.
1917	*/
1918	RTCRSTORE hStore;
1919	rc = RTCrStoreCreateInMem(&hStore, 256);
1920	if (RT_SUCCESS(rc))
1921	{
1922	rc = RTHttpGatherCaCertsInStore(hStore, 0 /fFlags/, pErrInfo);
1923	if (RT_SUCCESS(rc))
1924	/** @todo Consider adding an API for exporting to a RTFILE... */
1925	rc = RTCrStoreCertExportAsPem(hStore, 0 /fFlags/, pszCaFile);
1926	RTCrStoreRelease(hStore);
1927	}
1928	RTFileClose(hFile);
1929	if (RT_SUCCESS(rc))
1930	{
1931	/*
1932	* Set the CA file for the instance.
1933	*/
1934	rtHttpUnsetCaFile(pThis);
1935
1936	pThis->fDeleteCaFile = true;
1937	pThis->pszCaFile = pszCaFile;
1938	return VINF_SUCCESS;
1939	}
1940
1941	int rc2 = RTFileDelete(pszCaFile);
1942	AssertRC(rc2);
1943	}
1944	else
1945	RTErrInfoAddF(pErrInfo, rc, "Error creating temorary file: %Rrc", rc);
1946
1947	RTStrFree(pszCaFile);
1948	}
1949	return rc;
1950	}
1951
1952
1953	RTR3DECL(int) RTHttpGatherCaCertsInStore(RTCRSTORE hStore, uint32_t fFlags, PRTERRINFO pErrInfo)
1954	{
1955	uint32_t const cBefore = RTCrStoreCertCount(hStore);
1956	AssertReturn(cBefore != UINT32_MAX, VERR_INVALID_HANDLE);
1957	RT_NOREF_PV(fFlags);
1958
1959
1960	/*
1961	* Add the user store, quitely ignoring any errors.
1962	*/
1963	RTCRSTORE hSrcStore;
1964	int rcUser = RTCrStoreCreateSnapshotById(&hSrcStore, RTCRSTOREID_USER_TRUSTED_CAS_AND_CERTIFICATES, pErrInfo);
1965	if (RT_SUCCESS(rcUser))
1966	{
1967	rcUser = RTCrStoreCertAddFromStore(hStore, RTCRCERTCTX_F_ADD_IF_NOT_FOUND \| RTCRCERTCTX_F_ADD_CONTINUE_ON_ERROR,
1968	hSrcStore);
1969	RTCrStoreRelease(hSrcStore);
1970	}
1971
1972	/*
1973	* Ditto for the system store.
1974	*/
1975	int rcSystem = RTCrStoreCreateSnapshotById(&hSrcStore, RTCRSTOREID_SYSTEM_TRUSTED_CAS_AND_CERTIFICATES, pErrInfo);
1976	if (RT_SUCCESS(rcSystem))
1977	{
1978	rcSystem = RTCrStoreCertAddFromStore(hStore, RTCRCERTCTX_F_ADD_IF_NOT_FOUND \| RTCRCERTCTX_F_ADD_CONTINUE_ON_ERROR,
1979	hSrcStore);
1980	RTCrStoreRelease(hSrcStore);
1981	}
1982
1983	/*
1984	* If the number of certificates increased, we consider it a success.
1985	*/
1986	if (RTCrStoreCertCount(hStore) > cBefore)
1987	{
1988	if (RT_FAILURE(rcSystem))
1989	return -rcSystem;
1990	if (RT_FAILURE(rcUser))
1991	return -rcUser;
1992	return rcSystem != VINF_SUCCESS ? rcSystem : rcUser;
1993	}
1994
1995	if (RT_FAILURE(rcSystem))
1996	return rcSystem;
1997	if (RT_FAILURE(rcUser))
1998	return rcUser;
1999	return VERR_NOT_FOUND;
2000	}
2001
2002
2003	RTR3DECL(int) RTHttpGatherCaCertsInFile(const char *pszCaFile, uint32_t fFlags, PRTERRINFO pErrInfo)
2004	{
2005	RTCRSTORE hStore;
2006	int rc = RTCrStoreCreateInMem(&hStore, 256);
2007	if (RT_SUCCESS(rc))
2008	{
2009	rc = RTHttpGatherCaCertsInStore(hStore, fFlags, pErrInfo);
2010	if (RT_SUCCESS(rc))
2011	rc = RTCrStoreCertExportAsPem(hStore, 0 /fFlags/, pszCaFile);
2012	RTCrStoreRelease(hStore);
2013	}
2014	return rc;
2015	}
2016
2017
2018
2019	/**
2020	* Figures out the IPRT status code for a GET.
2021	*
2022	* @returns IPRT status code.
2023	* @param pThis The HTTP/HTTPS client instance.
2024	* @param rcCurl What curl returned.
2025	*/
2026	static int rtHttpGetCalcStatus(PRTHTTPINTERNAL pThis, int rcCurl)
2027	{
2028	int rc = VERR_HTTP_CURL_ERROR;
2029
2030	if (pThis->pszRedirLocation)
2031	{
2032	RTStrFree(pThis->pszRedirLocation);
2033	pThis->pszRedirLocation = NULL;
2034	}
2035	if (rcCurl == CURLE_OK)
2036	{
2037	curl_easy_getinfo(pThis->pCurl, CURLINFO_RESPONSE_CODE, &pThis->lLastResp);
2038	switch (pThis->lLastResp)
2039	{
2040	case 200:
2041	/* OK, request was fulfilled */
2042	case 204:
2043	/* empty response */
2044	rc = VINF_SUCCESS;
2045	break;
2046	case 301:
2047	{
2048	const char *pszRedirect;
2049	curl_easy_getinfo(pThis->pCurl, CURLINFO_REDIRECT_URL, &pszRedirect);
2050	size_t cb = strlen(pszRedirect);
2051	if (cb > 0 && cb < 2048)
2052	pThis->pszRedirLocation = RTStrDup(pszRedirect);
2053	rc = VERR_HTTP_REDIRECTED;
2054	break;
2055	}
2056	case 400:
2057	/* bad request */
2058	rc = VERR_HTTP_BAD_REQUEST;
2059	break;
2060	case 403:
2061	/* forbidden, authorization will not help */
2062	rc = VERR_HTTP_ACCESS_DENIED;
2063	break;
2064	case 404:
2065	/* URL not found */
2066	rc = VERR_HTTP_NOT_FOUND;
2067	break;
2068	}
2069
2070	if (pThis->pszRedirLocation)
2071	Log(("rtHttpGetCalcStatus: rc=%Rrc lastResp=%lu redir='%s'\n", rc, pThis->lLastResp, pThis->pszRedirLocation));
2072	else
2073	Log(("rtHttpGetCalcStatus: rc=%Rrc lastResp=%lu\n", rc, pThis->lLastResp));
2074	}
2075	else
2076	{
2077	switch (rcCurl)
2078	{
2079	case CURLE_URL_MALFORMAT:
2080	case CURLE_COULDNT_RESOLVE_HOST:
2081	rc = VERR_HTTP_HOST_NOT_FOUND;
2082	break;
2083	case CURLE_COULDNT_CONNECT:
2084	rc = VERR_HTTP_COULDNT_CONNECT;
2085	break;
2086	case CURLE_SSL_CONNECT_ERROR:
2087	rc = VERR_HTTP_SSL_CONNECT_ERROR;
2088	break;
2089	case CURLE_SSL_CACERT:
2090	/* The peer certificate cannot be authenticated with the CA certificates
2091	* set by RTHttpSetCAFile(). We need other or additional CA certificates. */
2092	rc = VERR_HTTP_CACERT_CANNOT_AUTHENTICATE;
2093	break;
2094	case CURLE_SSL_CACERT_BADFILE:
2095	/* CAcert file (see RTHttpSetCAFile()) has wrong format */
2096	rc = VERR_HTTP_CACERT_WRONG_FORMAT;
2097	break;
2098	case CURLE_ABORTED_BY_CALLBACK:
2099	/* forcefully aborted */
2100	rc = VERR_HTTP_ABORTED;
2101	break;
2102	case CURLE_COULDNT_RESOLVE_PROXY:
2103	rc = VERR_HTTP_PROXY_NOT_FOUND;
2104	break;
2105	case CURLE_WRITE_ERROR:
2106	rc = RT_FAILURE_NP(pThis->rcOutput) ? pThis->rcOutput : VERR_WRITE_ERROR;
2107	break;
2108	//case CURLE_READ_ERROR
2109
2110	default:
2111	break;
2112	}
2113	Log(("rtHttpGetCalcStatus: rc=%Rrc rcCurl=%u\n", rc, rcCurl));
2114	}
2115
2116	return rc;
2117	}
2118
2119
2120	/**
2121	* cURL callback for reporting progress, we use it for checking for abort.
2122	*/
2123	static int rtHttpProgress(void *pData, double rdTotalDownload, double rdDownloaded, double rdTotalUpload, double rdUploaded)
2124	{
2125	PRTHTTPINTERNAL pThis = (PRTHTTPINTERNAL)pData;
2126	AssertReturn(pThis->u32Magic == RTHTTP_MAGIC, 1);
2127	RT_NOREF_PV(rdTotalUpload);
2128	RT_NOREF_PV(rdUploaded);
2129
2130	pThis->cbDownloadHint = (uint64_t)rdTotalDownload;
2131
2132	if (pThis->pfnDownloadProgress)
2133	pThis->pfnDownloadProgress(pThis, pThis->pvDownloadProgressUser, (uint64_t)rdTotalDownload, (uint64_t)rdDownloaded);
2134
2135	return pThis->fAbort ? 1 : 0;
2136	}
2137
2138
2139	/**
2140	* Whether we're likely to need SSL to handle the give URL.
2141	*
2142	* @returns true if we need, false if we probably don't.
2143	* @param pszUrl The URL.
2144	*/
2145	static bool rtHttpNeedSsl(const char *pszUrl)
2146	{
2147	return RTStrNICmp(pszUrl, RT_STR_TUPLE("https:")) == 0;
2148	}
2149
2150
2151	/**
2152	* Applies recoded settings to the cURL instance before doing work.
2153	*
2154	* @returns IPRT status code.
2155	* @param pThis The HTTP/HTTPS client instance.
2156	* @param pszUrl The URL.
2157	*/
2158	static int rtHttpApplySettings(PRTHTTPINTERNAL pThis, const char *pszUrl)
2159	{
2160	/*
2161	* The URL.
2162	*/
2163	int rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_URL, pszUrl);
2164	if (CURL_FAILURE(rcCurl))
2165	return VERR_INVALID_PARAMETER;
2166
2167	/*
2168	* Proxy config.
2169	*/
2170	int rc = rtHttpConfigureProxyForUrl(pThis, pszUrl);
2171	if (RT_FAILURE(rc))
2172	return rc;
2173
2174	/*
2175	* Setup SSL. Can be a bit of work.
2176	*/
2177	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_SSLVERSION, (long)CURL_SSLVERSION_TLSv1);
2178	if (CURL_FAILURE(rcCurl))
2179	return VERR_INVALID_PARAMETER;
2180
2181	const char *pszCaFile = pThis->pszCaFile;
2182	if ( !pszCaFile
2183	&& rtHttpNeedSsl(pszUrl))
2184	{
2185	rc = RTHttpUseTemporaryCaFile(pThis, NULL);
2186	if (RT_SUCCESS(rc))
2187	pszCaFile = pThis->pszCaFile;
2188	else
2189	return rc; /* Non-portable alternative: pszCaFile = "/etc/ssl/certs/ca-certificates.crt"; */
2190	}
2191	if (pszCaFile)
2192	{
2193	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_CAINFO, pszCaFile);
2194	if (CURL_FAILURE(rcCurl))
2195	return VERR_HTTP_CURL_ERROR;
2196	}
2197
2198	/*
2199	* Progress/abort.
2200	*/
2201	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_PROGRESSFUNCTION, &rtHttpProgress);
2202	if (CURL_FAILURE(rcCurl))
2203	return VERR_HTTP_CURL_ERROR;
2204	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_PROGRESSDATA, (void *)pThis);
2205	if (CURL_FAILURE(rcCurl))
2206	return VERR_HTTP_CURL_ERROR;
2207	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_NOPROGRESS, (long)0);
2208	if (CURL_FAILURE(rcCurl))
2209	return VERR_HTTP_CURL_ERROR;
2210
2211	/*
2212	* Set default user agent string if necessary. Some websites take offence
2213	* if we don't set it.
2214	*/
2215	if ( !pThis->fHaveSetUserAgent
2216	&& !pThis->fHaveUserAgentHeader)
2217	{
2218	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_USERAGENT, "Mozilla/5.0 (AgnosticOS; Blend) IPRT/64.42");
2219	if (CURL_FAILURE(rcCurl))
2220	return VERR_HTTP_CURL_ERROR;
2221	pThis->fHaveSetUserAgent = true;
2222	}
2223
2224	/*
2225	* Use GET by default.
2226	*/
2227	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_NOBODY, 0L);
2228	if (CURL_FAILURE(rcCurl))
2229	return VERR_HTTP_CURL_ERROR;
2230	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_HEADER, 0L);
2231	if (CURL_FAILURE(rcCurl))
2232	return VERR_HTTP_CURL_ERROR;
2233
2234	return VINF_SUCCESS;
2235	}
2236
2237
2238	/**
2239	* cURL callback for writing data.
2240	*/
2241	static size_t rtHttpWriteData(void pvBuf, size_t cbUnit, size_t cUnits, void pvUser)
2242	{
2243	PRTHTTPINTERNAL pThis = (PRTHTTPINTERNAL)pvUser;
2244
2245	/*
2246	* Do max size and overflow checks.
2247	*/
2248	size_t const cbToAppend = cbUnit * cUnits;
2249	size_t const cbCurSize = pThis->Output.Mem.cb;
2250	size_t const cbNewSize = cbCurSize + cbToAppend;
2251	if ( cbToAppend < RTHTTP_MAX_MEM_DOWNLOAD_SIZE
2252	&& cbNewSize < RTHTTP_MAX_MEM_DOWNLOAD_SIZE)
2253	{
2254	if (cbNewSize + 1 <= pThis->Output.Mem.cbAllocated)
2255	{
2256	memcpy(&pThis->Output.Mem.pb[cbCurSize], pvBuf, cbToAppend);
2257	pThis->Output.Mem.cb = cbNewSize;
2258	pThis->Output.Mem.pb[cbNewSize] = '\0';
2259	return cbToAppend;
2260	}
2261
2262	/*
2263	* We need to reallocate the output buffer.
2264	*/
2265	/** @todo this could do with a better strategy wrt growth. */
2266	size_t cbAlloc = RT_ALIGN_Z(cbNewSize + 1, 64);
2267	if ( cbAlloc <= pThis->cbDownloadHint
2268	&& pThis->cbDownloadHint < RTHTTP_MAX_MEM_DOWNLOAD_SIZE)
2269	cbAlloc = RT_ALIGN_Z(pThis->cbDownloadHint + 1, 64);
2270
2271	uint8_t pbNew = (uint8_t )RTMemRealloc(pThis->Output.Mem.pb, cbAlloc);
2272	if (pbNew)
2273	{
2274	memcpy(&pbNew[cbCurSize], pvBuf, cbToAppend);
2275	pbNew[cbNewSize] = '\0';
2276
2277	pThis->Output.Mem.cbAllocated = cbAlloc;
2278	pThis->Output.Mem.pb = pbNew;
2279	pThis->Output.Mem.cb = cbNewSize;
2280	return cbToAppend;
2281	}
2282
2283	pThis->rcOutput = VERR_NO_MEMORY;
2284	}
2285	else
2286	pThis->rcOutput = VERR_TOO_MUCH_DATA;
2287
2288	/*
2289	* Failure - abort.
2290	*/
2291	RTMemFree(pThis->Output.Mem.pb);
2292	pThis->Output.Mem.pb = NULL;
2293	pThis->Output.Mem.cb = RTHTTP_MAX_MEM_DOWNLOAD_SIZE;
2294	pThis->fAbort = true;
2295	return 0;
2296	}
2297
2298
2299	/**
2300	* Internal worker that performs a HTTP GET.
2301	*
2302	* @returns IPRT status code.
2303	* @param hHttp The HTTP/HTTPS client instance.
2304	* @param pszUrl The URL.
2305	* @param fNoBody Set to suppress the body.
2306	* @param ppvResponse Where to return the pointer to the allocated
2307	* response data (RTMemFree). There will always be
2308	* an zero terminator char after the response, that
2309	* is not part of the size returned via @a pcb.
2310	* @param pcb The size of the response data.
2311	*
2312	* @remarks We ASSUME the API user doesn't do concurrent GETs in different
2313	* threads, because that will probably blow up!
2314	*/
2315	static int rtHttpGetToMem(RTHTTP hHttp, const char pszUrl, bool fNoBody, uint8_t ppvResponse, size_t pcb)
2316	{
2317	PRTHTTPINTERNAL pThis = hHttp;
2318	RTHTTP_VALID_RETURN(pThis);
2319
2320	/*
2321	* Reset the return values in case of more "GUI programming" on the client
2322	* side (i.e. a programming style not bothering checking return codes).
2323	*/
2324	*ppvResponse = NULL;
2325	*pcb = 0;
2326
2327	/*
2328	* Set the busy flag (paranoia).
2329	*/
2330	bool fBusy = ASMAtomicXchgBool(&pThis->fBusy, true);
2331	AssertReturn(!fBusy, VERR_WRONG_ORDER);
2332
2333	/*
2334	* Reset the state and apply settings.
2335	*/
2336	pThis->fAbort = false;
2337	pThis->rcOutput = VINF_SUCCESS;
2338	pThis->cbDownloadHint = 0;
2339
2340	int rc = rtHttpApplySettings(hHttp, pszUrl);
2341	if (RT_SUCCESS(rc))
2342	{
2343	RT_ZERO(pThis->Output.Mem);
2344	int rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_WRITEFUNCTION, &rtHttpWriteData);
2345	if (!CURL_FAILURE(rcCurl))
2346	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_WRITEDATA, (void *)pThis);
2347	if (fNoBody)
2348	{
2349	if (!CURL_FAILURE(rcCurl))
2350	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_NOBODY, 1L);
2351	if (!CURL_FAILURE(rcCurl))
2352	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_HEADER, 1L);
2353	}
2354	if (!CURL_FAILURE(rcCurl))
2355	{
2356	/*
2357	* Perform the HTTP operation.
2358	*/
2359	rcCurl = curl_easy_perform(pThis->pCurl);
2360	rc = rtHttpGetCalcStatus(pThis, rcCurl);
2361	if (RT_SUCCESS(rc))
2362	rc = pThis->rcOutput;
2363	if (RT_SUCCESS(rc))
2364	{
2365	*ppvResponse = pThis->Output.Mem.pb;
2366	*pcb = pThis->Output.Mem.cb;
2367	Log(("rtHttpGetToMem: %zx bytes (allocated %zx)\n", pThis->Output.Mem.cb, pThis->Output.Mem.cbAllocated));
2368	}
2369	else if (pThis->Output.Mem.pb)
2370	RTMemFree(pThis->Output.Mem.pb);
2371	RT_ZERO(pThis->Output.Mem);
2372	}
2373	else
2374	rc = VERR_HTTP_CURL_ERROR;
2375	}
2376
2377	ASMAtomicWriteBool(&pThis->fBusy, false);
2378	return rc;
2379	}
2380
2381
2382	RTR3DECL(int) RTHttpGetText(RTHTTP hHttp, const char pszUrl, char *ppszNotUtf8)
2383	{
2384	Log(("RTHttpGetText: hHttp=%p pszUrl=%s\n", hHttp, pszUrl));
2385	uint8_t *pv;
2386	size_t cb;
2387	int rc = rtHttpGetToMem(hHttp, pszUrl, false /fNoBody/, &pv, &cb);
2388	if (RT_SUCCESS(rc))
2389	{
2390	if (pv) /* paranoia */
2391	ppszNotUtf8 = (char )pv;
2392	else
2393	ppszNotUtf8 = (char )RTMemDup("", 1);
2394	}
2395	else
2396	*ppszNotUtf8 = NULL;
2397	return rc;
2398	}
2399
2400
2401	RTR3DECL(int) RTHttpGetHeaderText(RTHTTP hHttp, const char pszUrl, char *ppszNotUtf8)
2402	{
2403	Log(("RTHttpGetText: hHttp=%p pszUrl=%s\n", hHttp, pszUrl));
2404	uint8_t *pv;
2405	size_t cb;
2406	int rc = rtHttpGetToMem(hHttp, pszUrl, true /fNoBody/, &pv, &cb);
2407	if (RT_SUCCESS(rc))
2408	{
2409	if (pv) /* paranoia */
2410	ppszNotUtf8 = (char )pv;
2411	else
2412	ppszNotUtf8 = (char )RTMemDup("", 1);
2413	}
2414	else
2415	*ppszNotUtf8 = NULL;
2416	return rc;
2417
2418	}
2419
2420
2421	RTR3DECL(void) RTHttpFreeResponseText(char *pszNotUtf8)
2422	{
2423	RTMemFree(pszNotUtf8);
2424	}
2425
2426
2427	RTR3DECL(int) RTHttpGetBinary(RTHTTP hHttp, const char pszUrl, void ppvResponse, size_t pcb)
2428	{
2429	Log(("RTHttpGetBinary: hHttp=%p pszUrl=%s\n", hHttp, pszUrl));
2430	return rtHttpGetToMem(hHttp, pszUrl, false /fNoBody/, (uint8_t **)ppvResponse, pcb);
2431	}
2432
2433
2434	RTR3DECL(int) RTHttpGetHeaderBinary(RTHTTP hHttp, const char pszUrl, void ppvResponse, size_t pcb)
2435	{
2436	Log(("RTHttpGetBinary: hHttp=%p pszUrl=%s\n", hHttp, pszUrl));
2437	return rtHttpGetToMem(hHttp, pszUrl, true /fNoBody/, (uint8_t **)ppvResponse, pcb);
2438	}
2439
2440
2441	RTR3DECL(void) RTHttpFreeResponse(void *pvResponse)
2442	{
2443	RTMemFree(pvResponse);
2444	}
2445
2446
2447	/**
2448	* cURL callback for writing data to a file.
2449	*/
2450	static size_t rtHttpWriteDataToFile(void pvBuf, size_t cbUnit, size_t cUnits, void pvUser)
2451	{
2452	PRTHTTPINTERNAL pThis = (PRTHTTPINTERNAL)pvUser;
2453	size_t cbWritten = 0;
2454	int rc = RTFileWrite(pThis->Output.hFile, pvBuf, cbUnit * cUnits, &cbWritten);
2455	if (RT_SUCCESS(rc))
2456	return cbWritten;
2457	Log(("rtHttpWriteDataToFile: rc=%Rrc cbUnit=%zd cUnits=%zu\n", rc, cbUnit, cUnits));
2458	pThis->rcOutput = rc;
2459	return 0;
2460	}
2461
2462
2463	RTR3DECL(int) RTHttpGetFile(RTHTTP hHttp, const char pszUrl, const char pszDstFile)
2464	{
2465	Log(("RTHttpGetBinary: hHttp=%p pszUrl=%s pszDstFile=%s\n", hHttp, pszUrl, pszDstFile));
2466	PRTHTTPINTERNAL pThis = hHttp;
2467	RTHTTP_VALID_RETURN(pThis);
2468
2469	/*
2470	* Set the busy flag (paranoia).
2471	*/
2472	bool fBusy = ASMAtomicXchgBool(&pThis->fBusy, true);
2473	AssertReturn(!fBusy, VERR_WRONG_ORDER);
2474
2475	/*
2476	* Reset the state and apply settings.
2477	*/
2478	pThis->fAbort = false;
2479	pThis->rcOutput = VINF_SUCCESS;
2480	pThis->cbDownloadHint = 0;
2481
2482	int rc = rtHttpApplySettings(hHttp, pszUrl);
2483	if (RT_SUCCESS(rc))
2484	{
2485	pThis->Output.hFile = NIL_RTFILE;
2486	int rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_WRITEFUNCTION, &rtHttpWriteDataToFile);
2487	if (!CURL_FAILURE(rcCurl))
2488	rcCurl = curl_easy_setopt(pThis->pCurl, CURLOPT_WRITEDATA, (void *)pThis);
2489	if (!CURL_FAILURE(rcCurl))
2490	{
2491	/*
2492	* Open the output file.
2493	*/
2494	rc = RTFileOpen(&pThis->Output.hFile, pszDstFile, RTFILE_O_CREATE_REPLACE \| RTFILE_O_WRITE \| RTFILE_O_DENY_READWRITE);
2495	if (RT_SUCCESS(rc))
2496	{
2497	/*
2498	* Perform the HTTP operation.
2499	*/
2500	rcCurl = curl_easy_perform(pThis->pCurl);
2501	rc = rtHttpGetCalcStatus(pThis, rcCurl);
2502	if (RT_SUCCESS(rc))
2503	rc = pThis->rcOutput;
2504
2505	int rc2 = RTFileClose(pThis->Output.hFile);
2506	if (RT_FAILURE(rc2) && RT_SUCCESS(rc))
2507	rc = rc2;
2508	}
2509	pThis->Output.hFile = NIL_RTFILE;
2510	}
2511	else
2512	rc = VERR_HTTP_CURL_ERROR;
2513	}
2514
2515	ASMAtomicWriteBool(&pThis->fBusy, false);
2516	return rc;
2517	}
2518
2519
2520	RTR3DECL(int) RTHttpSetDownloadProgressCallback(RTHTTP hHttp, PRTHTTPDOWNLDPROGRCALLBACK pfnDownloadProgress, void *pvUser)
2521	{
2522	PRTHTTPINTERNAL pThis = hHttp;
2523	RTHTTP_VALID_RETURN(pThis);
2524
2525	pThis->pfnDownloadProgress = pfnDownloadProgress;
2526	pThis->pvDownloadProgressUser = pvUser;
2527	return VINF_SUCCESS;
2528	}

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source: vbox/trunk/src/VBox/Runtime/generic/http-curl.cpp@ 67791

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