2 * Copyright 2008 Hans Leidekker for CodeWeavers
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/debug.h"
30 #include "winhttp_private.h"
32 WINE_DEFAULT_DEBUG_CHANNEL(winhttp);
34 static const WCHAR scheme_http[] = {'h','t','t','p',0};
35 static const WCHAR scheme_https[] = {'h','t','t','p','s',0};
37 static BOOL set_component( WCHAR **str, DWORD *str_len, WCHAR *value, DWORD len, DWORD flags )
41 if (len && *str_len && (flags & (ICU_DECODE|ICU_ESCAPE)))
43 set_last_error( ERROR_INVALID_PARAMETER );
51 if (len > (*str_len) - 1)
54 set_last_error( ERROR_INSUFFICIENT_BUFFER );
57 memcpy( *str, value, len * sizeof(WCHAR) );
64 static WCHAR *decode_url( LPCWSTR url, DWORD *len )
67 WCHAR hex[3], *q, *ret;
69 if (!(ret = heap_alloc( *len * sizeof(WCHAR) ))) return NULL;
73 if (p[0] == '%' && isxdigitW( p[1] ) && isxdigitW( p[2] ))
78 *q++ = strtolW( hex, NULL, 16 );
92 static BOOL need_escape( WCHAR c )
94 if (isalnumW( c )) return FALSE;
96 if (c <= 31 || c >= 127) return TRUE;
123 static DWORD copy_escape( WCHAR *dst, const WCHAR *src, DWORD len )
125 static const WCHAR hex[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
130 for (i = 0; i < len; i++, p++)
132 if (need_escape( src[i] ))
135 p[1] = hex[(src[i] >> 4) & 0xf];
136 p[2] = hex[src[i] & 0xf];
146 static WCHAR *escape_url( LPCWSTR url, DWORD *len )
151 if ((p = q = strrchrW( url, '/' )))
155 if (need_escape( *q )) *len += 2;
159 if (!(ret = heap_alloc( (*len + 1) * sizeof(WCHAR) ))) return NULL;
160 if (!p) strcpyW( ret, url );
163 memcpy( ret, url, (p - url) * sizeof(WCHAR) );
164 copy_escape( ret + (p - url), p, q - p );
169 /***********************************************************************
170 * WinHttpCrackUrl (winhttp.@)
172 BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONENTSW uc )
175 WCHAR *p, *q, *r, *url_decoded = NULL, *url_escaped = NULL;
177 TRACE("%s, %d, %x, %p\n", debugstr_w(url), len, flags, uc);
179 if (!url || !uc || uc->dwStructSize != sizeof(URL_COMPONENTS))
181 set_last_error( ERROR_INVALID_PARAMETER );
184 if (!len) len = strlenW( url );
186 if (flags & ICU_ESCAPE)
188 if (!(url_escaped = escape_url( url, &len )))
190 set_last_error( ERROR_OUTOFMEMORY );
195 else if (flags & ICU_DECODE)
197 if (!(url_decoded = decode_url( url, &len )))
199 set_last_error( ERROR_OUTOFMEMORY );
204 if (!(p = strchrW( url, ':' )))
206 set_last_error( ERROR_WINHTTP_UNRECOGNIZED_SCHEME );
209 if (p - url == 4 && !strncmpiW( url, scheme_http, 4 )) uc->nScheme = INTERNET_SCHEME_HTTP;
210 else if (p - url == 5 && !strncmpiW( url, scheme_https, 5 )) uc->nScheme = INTERNET_SCHEME_HTTPS;
213 set_last_error( ERROR_WINHTTP_UNRECOGNIZED_SCHEME );
216 if (!(set_component( &uc->lpszScheme, &uc->dwSchemeLength, (WCHAR *)url, p - url, flags ))) goto exit;
219 if (!p[0] || p[0] != '/' || p[1] != '/') goto exit;
222 if (!p[0]) goto exit;
223 if ((q = memchrW( p, '@', len - (p - url) )) && !(memchrW( p, '/', q - p )))
225 if ((r = memchrW( p, ':', q - p )))
227 if (!(set_component( &uc->lpszUserName, &uc->dwUserNameLength, p, r - p, flags ))) goto exit;
229 if (!(set_component( &uc->lpszPassword, &uc->dwPasswordLength, r, q - r, flags ))) goto exit;
233 if (!(set_component( &uc->lpszUserName, &uc->dwUserNameLength, p, q - p, flags ))) goto exit;
234 if (!(set_component( &uc->lpszPassword, &uc->dwPasswordLength, NULL, 0, flags ))) goto exit;
240 if (!(set_component( &uc->lpszUserName, &uc->dwUserNameLength, NULL, 0, flags ))) goto exit;
241 if (!(set_component( &uc->lpszPassword, &uc->dwPasswordLength, NULL, 0, flags ))) goto exit;
243 if ((q = memchrW( p, '/', len - (p - url) )))
245 if ((r = memchrW( p, ':', q - p )))
247 if (!(set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, r - p, flags ))) goto exit;
249 uc->nPort = atoiW( r );
253 if (!(set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, q - p, flags ))) goto exit;
254 if (uc->nScheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
255 if (uc->nScheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
258 if ((r = memchrW( q, '?', len - (q - url) )))
260 if (!(set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, q, r - q, flags ))) goto exit;
261 if (!(set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, r, len - (r - url), flags ))) goto exit;
265 if (!(set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, q, len - (q - url), flags ))) goto exit;
266 if (!(set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, (WCHAR *)url + len, 0, flags ))) goto exit;
271 if ((r = memchrW( p, ':', len - (p - url) )))
273 if (!(set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, r - p, flags ))) goto exit;
275 uc->nPort = atoiW( r );
279 if (!(set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, len - (p - url), flags ))) goto exit;
280 if (uc->nScheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
281 if (uc->nScheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
283 if (!(set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, (WCHAR *)url + len, 0, flags ))) goto exit;
284 if (!(set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, (WCHAR *)url + len, 0, flags ))) goto exit;
289 TRACE("scheme(%s) host(%s) port(%d) path(%s) extra(%s)\n",
290 debugstr_wn( uc->lpszScheme, uc->dwSchemeLength ),
291 debugstr_wn( uc->lpszHostName, uc->dwHostNameLength ),
293 debugstr_wn( uc->lpszUrlPath, uc->dwUrlPathLength ),
294 debugstr_wn( uc->lpszExtraInfo, uc->dwExtraInfoLength ));
297 heap_free( url_decoded );
298 heap_free( url_escaped );
302 static INTERNET_SCHEME get_scheme( const WCHAR *scheme, DWORD len )
304 if (!strncmpW( scheme, scheme_http, len )) return INTERNET_SCHEME_HTTP;
305 if (!strncmpW( scheme, scheme_https, len )) return INTERNET_SCHEME_HTTPS;
309 static const WCHAR *get_scheme_string( INTERNET_SCHEME scheme )
311 if (scheme == INTERNET_SCHEME_HTTP) return scheme_http;
312 if (scheme == INTERNET_SCHEME_HTTPS) return scheme_https;
316 static BOOL uses_default_port( INTERNET_SCHEME scheme, INTERNET_PORT port )
318 if ((scheme == INTERNET_SCHEME_HTTP) && (port == INTERNET_DEFAULT_HTTP_PORT)) return TRUE;
319 if ((scheme == INTERNET_SCHEME_HTTPS) && (port == INTERNET_DEFAULT_HTTPS_PORT)) return TRUE;
323 static DWORD comp_length( DWORD len, DWORD flags, WCHAR *comp )
328 ret = len ? len : strlenW( comp );
329 if (!(flags & ICU_ESCAPE)) return ret;
330 for (i = 0; i < len; i++) if (need_escape( comp[i] )) ret += 2;
334 static BOOL calc_length( URL_COMPONENTS *uc, DWORD flags, LPDWORD len )
336 static const WCHAR formatW[] = {'%','u',0};
337 INTERNET_SCHEME scheme;
342 DWORD scheme_len = comp_length( uc->dwSchemeLength, 0, uc->lpszScheme );
344 scheme = get_scheme( uc->lpszScheme, scheme_len );
348 scheme = uc->nScheme;
349 if (!scheme) scheme = INTERNET_SCHEME_HTTP;
350 *len += strlenW( get_scheme_string( scheme ) );
353 if (uc->lpszHostName) *len += 2; /* "//" */
355 if (uc->lpszUserName)
357 *len += comp_length( uc->dwUserNameLength, 0, uc->lpszUserName );
362 if (uc->lpszPassword)
364 set_last_error( ERROR_INVALID_PARAMETER );
368 if (uc->lpszPassword)
371 *len += comp_length( uc->dwPasswordLength, 0, uc->lpszPassword );
373 if (uc->lpszHostName)
375 *len += comp_length( uc->dwHostNameLength, 0, uc->lpszHostName );
377 if (!uses_default_port( scheme, uc->nPort ))
379 WCHAR port[sizeof("65535")];
381 sprintfW( port, formatW, uc->nPort );
382 *len += strlenW( port );
385 if (uc->lpszUrlPath && *uc->lpszUrlPath != '/') *len += 1; /* '/' */
387 if (uc->lpszUrlPath) *len += comp_length( uc->dwUrlPathLength, flags, uc->lpszUrlPath );
388 if (uc->lpszExtraInfo) *len += comp_length( uc->dwExtraInfoLength, flags, uc->lpszExtraInfo );
392 /***********************************************************************
393 * WinHttpCreateUrl (winhttp.@)
395 BOOL WINAPI WinHttpCreateUrl( LPURL_COMPONENTS uc, DWORD flags, LPWSTR url, LPDWORD required )
397 static const WCHAR formatW[] = {'%','u',0};
398 static const WCHAR twoslashW[] = {'/','/'};
401 INTERNET_SCHEME scheme;
403 TRACE("%p, 0x%08x, %p, %p\n", uc, flags, url, required);
405 if (!uc || uc->dwStructSize != sizeof(URL_COMPONENTS) || !required || !url)
407 set_last_error( ERROR_INVALID_PARAMETER );
411 if (!calc_length( uc, flags, &len )) return FALSE;
416 set_last_error( ERROR_INSUFFICIENT_BUFFER );
424 len = comp_length( uc->dwSchemeLength, 0, uc->lpszScheme );
425 memcpy( url, uc->lpszScheme, len * sizeof(WCHAR) );
428 scheme = get_scheme( uc->lpszScheme, len );
432 const WCHAR *schemeW;
433 scheme = uc->nScheme;
435 if (!scheme) scheme = INTERNET_SCHEME_HTTP;
437 schemeW = get_scheme_string( scheme );
438 len = strlenW( schemeW );
439 memcpy( url, schemeW, len * sizeof(WCHAR) );
443 /* all schemes are followed by at least a colon */
447 if (uc->lpszHostName)
449 memcpy( url, twoslashW, sizeof(twoslashW) );
450 url += sizeof(twoslashW) / sizeof(twoslashW[0]);
452 if (uc->lpszUserName)
454 len = comp_length( uc->dwUserNameLength, 0, uc->lpszUserName );
455 memcpy( url, uc->lpszUserName, len * sizeof(WCHAR) );
458 if (uc->lpszPassword)
463 len = comp_length( uc->dwPasswordLength, 0, uc->lpszPassword );
464 memcpy( url, uc->lpszPassword, len * sizeof(WCHAR) );
470 if (uc->lpszHostName)
472 len = comp_length( uc->dwHostNameLength, 0, uc->lpszHostName );
473 memcpy( url, uc->lpszHostName, len * sizeof(WCHAR) );
476 if (!uses_default_port( scheme, uc->nPort ))
478 WCHAR port[sizeof("65535")];
480 sprintfW( port, formatW, uc->nPort );
484 len = strlenW( port );
485 memcpy( url, port, len * sizeof(WCHAR) );
489 /* add slash between hostname and path if necessary */
490 if (uc->lpszUrlPath && *uc->lpszUrlPath != '/')
498 len = comp_length( uc->dwUrlPathLength, 0, uc->lpszUrlPath );
499 if (flags & ICU_ESCAPE) url += copy_escape( url, uc->lpszUrlPath, len );
502 memcpy( url, uc->lpszUrlPath, len * sizeof(WCHAR) );
506 if (uc->lpszExtraInfo)
508 len = comp_length( uc->dwExtraInfoLength, 0, uc->lpszExtraInfo );
509 if (flags & ICU_ESCAPE) url += copy_escape( url, uc->lpszExtraInfo, len );
512 memcpy( url, uc->lpszExtraInfo, len * sizeof(WCHAR) );