527 lines
16 KiB
C
527 lines
16 KiB
C
/*
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* Copyright 2008 Hans Leidekker for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "ws2tcpip.h"
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winreg.h"
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#include "winhttp.h"
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#include "shlwapi.h"
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#include "wine/debug.h"
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#include "winhttp_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(winhttp);
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static const WCHAR scheme_http[] = {'h','t','t','p',0};
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static const WCHAR scheme_https[] = {'h','t','t','p','s',0};
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static DWORD set_component( WCHAR **str, DWORD *str_len, WCHAR *value, DWORD len, DWORD flags, BOOL *overflow )
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{
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if (*str && !*str_len) return ERROR_INVALID_PARAMETER;
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if (!*str_len) return ERROR_SUCCESS;
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if (!*str)
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{
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if (len && *str_len && (flags & (ICU_DECODE|ICU_ESCAPE))) return ERROR_INVALID_PARAMETER;
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*str = value;
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*str_len = len;
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}
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else
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{
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if (len >= *str_len)
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{
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*str_len = len+1;
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*overflow = TRUE;
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return ERROR_SUCCESS;
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}
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memcpy( *str, value, len * sizeof(WCHAR) );
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(*str)[len] = 0;
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*str_len = len;
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}
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return ERROR_SUCCESS;
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}
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static WCHAR *decode_url( LPCWSTR url, DWORD *len )
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{
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const WCHAR *p = url;
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WCHAR hex[3], *q, *ret;
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if (!(ret = heap_alloc( *len * sizeof(WCHAR) ))) return NULL;
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q = ret;
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while (*len > 0)
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{
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if (p[0] == '%' && isxdigitW( p[1] ) && isxdigitW( p[2] ))
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{
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hex[0] = p[1];
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hex[1] = p[2];
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hex[2] = 0;
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*q++ = strtolW( hex, NULL, 16 );
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p += 3;
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*len -= 3;
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}
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else
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{
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*q++ = *p++;
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*len -= 1;
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}
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}
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*len = q - ret;
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return ret;
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}
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static BOOL need_escape( WCHAR ch, enum escape_flags flags )
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{
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static const WCHAR escapes[] = {' ','"','#','<','>','[','\\',']','^','`','{','|','}',0};
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const WCHAR *p = escapes;
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if (ch != ' ' && (flags & ESCAPE_FLAG_SPACE_ONLY)) return FALSE;
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if (ch == '%' && (flags & ESCAPE_FLAG_PERCENT)) return TRUE;
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if (ch == '~' && (flags & ESCAPE_FLAG_TILDE)) return TRUE;
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if (ch <= 31 || ch >= 127) return TRUE;
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while (*p)
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{
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if (ch == *p++) return TRUE;
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}
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return FALSE;
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}
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DWORD escape_string( WCHAR *dst, const WCHAR *src, DWORD len, enum escape_flags flags )
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{
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static const WCHAR hex[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
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DWORD ret = len;
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unsigned int i;
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WCHAR *p = dst;
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for (i = 0; i < len; i++)
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{
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if ((flags & ESCAPE_FLAG_REMOVE_CRLF) && (src[i] == '\r' || src[i] == '\n'))
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{
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ret--;
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continue;
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}
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if (need_escape( src[i], flags ))
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{
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if (dst)
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{
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p[0] = '%';
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p[1] = hex[(src[i] >> 4) & 0xf];
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p[2] = hex[src[i] & 0xf];
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p += 3;
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}
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ret += 2;
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}
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else if (dst) *p++ = src[i];
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}
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if (dst) dst[ret] = 0;
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return ret;
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}
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static WCHAR *escape_url( const WCHAR *url, DWORD *len )
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{
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WCHAR *ret;
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const WCHAR *p;
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DWORD len_base, len_path;
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if ((p = strrchrW( url, '/' )))
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{
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len_base = p - url;
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len_path = escape_string( NULL, p, *len - len_base, ESCAPE_FLAG_PERCENT|ESCAPE_FLAG_TILDE );
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}
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else
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{
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len_base = *len;
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len_path = 0;
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}
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if (!(ret = heap_alloc( (len_base + len_path + 1) * sizeof(WCHAR) ))) return NULL;
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memcpy( ret, url, len_base * sizeof(WCHAR) );
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if (p) escape_string( ret + len_base, p, *len - (p - url), ESCAPE_FLAG_PERCENT|ESCAPE_FLAG_TILDE );
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ret[len_base + len_path] = 0;
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*len = len_base + len_path;
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return ret;
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}
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static DWORD parse_port( const WCHAR *str, DWORD len, INTERNET_PORT *ret )
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{
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const WCHAR *p = str;
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DWORD port = 0;
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while (len && isdigitW( *p ))
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{
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if ((port = port * 10 + *p - '0') > 65535) return ERROR_WINHTTP_INVALID_URL;
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p++; len--;
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}
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*ret = port;
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return ERROR_SUCCESS;
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}
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/***********************************************************************
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* WinHttpCrackUrl (winhttp.@)
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*/
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BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONENTSW uc )
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{
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WCHAR *p, *q, *r, *url_decoded = NULL, *url_escaped = NULL;
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INTERNET_SCHEME scheme = 0;
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BOOL overflow = FALSE;
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DWORD err;
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TRACE("%s, %d, %x, %p\n", debugstr_wn(url, len), len, flags, uc);
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if (!url || !uc || uc->dwStructSize != sizeof(URL_COMPONENTS))
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{
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set_last_error( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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if (!len) len = strlenW( url );
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if (flags & ICU_ESCAPE)
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{
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if (!(url_escaped = escape_url( url, &len )))
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{
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set_last_error( ERROR_OUTOFMEMORY );
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return FALSE;
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}
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url = url_escaped;
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}
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else if (flags & ICU_DECODE)
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{
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if (!(url_decoded = decode_url( url, &len )))
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{
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set_last_error( ERROR_OUTOFMEMORY );
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return FALSE;
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}
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url = url_decoded;
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}
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if (!(p = strchrW( url, ':' )))
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{
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set_last_error( ERROR_WINHTTP_UNRECOGNIZED_SCHEME );
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return FALSE;
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}
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if (p - url == 4 && !strncmpiW( url, scheme_http, 4 )) scheme = INTERNET_SCHEME_HTTP;
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else if (p - url == 5 && !strncmpiW( url, scheme_https, 5 )) scheme = INTERNET_SCHEME_HTTPS;
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else
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{
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err = ERROR_WINHTTP_UNRECOGNIZED_SCHEME;
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goto exit;
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}
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if ((err = set_component( &uc->lpszScheme, &uc->dwSchemeLength, (WCHAR *)url, p - url, flags, &overflow ))) goto exit;
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p++; /* skip ':' */
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if (!p[0] || p[0] != '/' || p[1] != '/')
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{
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err = ERROR_WINHTTP_INVALID_URL;
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goto exit;
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}
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p += 2;
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if (!p[0])
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{
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err = ERROR_WINHTTP_INVALID_URL;
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goto exit;
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}
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if ((q = memchrW( p, '@', len - (p - url) )) && !(memchrW( p, '/', q - p )))
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{
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if ((r = memchrW( p, ':', q - p )))
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{
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if ((err = set_component( &uc->lpszUserName, &uc->dwUserNameLength, p, r - p, flags, &overflow ))) goto exit;
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r++;
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if ((err = set_component( &uc->lpszPassword, &uc->dwPasswordLength, r, q - r, flags, &overflow ))) goto exit;
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}
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else
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{
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if ((err = set_component( &uc->lpszUserName, &uc->dwUserNameLength, p, q - p, flags, &overflow ))) goto exit;
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if ((err = set_component( &uc->lpszPassword, &uc->dwPasswordLength, NULL, 0, flags, &overflow ))) goto exit;
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}
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p = q + 1;
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}
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else
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{
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if ((err = set_component( &uc->lpszUserName, &uc->dwUserNameLength, NULL, 0, flags, &overflow ))) goto exit;
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if ((err = set_component( &uc->lpszPassword, &uc->dwPasswordLength, NULL, 0, flags, &overflow ))) goto exit;
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}
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if ((q = memchrW( p, '/', len - (p - url) )))
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{
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if ((r = memchrW( p, ':', q - p )))
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{
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if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, r - p, flags, &overflow ))) goto exit;
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r++;
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if ((err = parse_port( r, q - r, &uc->nPort ))) goto exit;
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}
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else
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{
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if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, q - p, flags, &overflow ))) goto exit;
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if (scheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
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if (scheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
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}
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if ((r = memchrW( q, '?', len - (q - url) )))
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{
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if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, q, r - q, flags, &overflow ))) goto exit;
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if ((err = set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, r, len - (r - url), flags, &overflow ))) goto exit;
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}
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else
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{
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if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, q, len - (q - url), flags, &overflow ))) goto exit;
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if ((err = set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit;
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}
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}
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else
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{
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if ((r = memchrW( p, ':', len - (p - url) )))
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{
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if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, r - p, flags, &overflow ))) goto exit;
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r++;
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if ((err = parse_port( r, len - (r - url), &uc->nPort ))) goto exit;
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}
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else
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{
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if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, len - (p - url), flags, &overflow ))) goto exit;
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if (scheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
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if (scheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
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}
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if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit;
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if ((err = set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit;
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}
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TRACE("scheme(%s) host(%s) port(%d) path(%s) extra(%s)\n", debugstr_wn( uc->lpszScheme, uc->dwSchemeLength ),
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debugstr_wn( uc->lpszHostName, uc->dwHostNameLength ), uc->nPort, debugstr_wn( uc->lpszUrlPath, uc->dwUrlPathLength ),
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debugstr_wn( uc->lpszExtraInfo, uc->dwExtraInfoLength ));
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exit:
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if (!err)
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{
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if (overflow) err = ERROR_INSUFFICIENT_BUFFER;
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uc->nScheme = scheme;
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}
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heap_free( url_decoded );
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heap_free( url_escaped );
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set_last_error( err );
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return !err;
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}
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static INTERNET_SCHEME get_scheme( const WCHAR *scheme, DWORD len )
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{
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if (!strncmpW( scheme, scheme_http, len )) return INTERNET_SCHEME_HTTP;
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if (!strncmpW( scheme, scheme_https, len )) return INTERNET_SCHEME_HTTPS;
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return 0;
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}
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static const WCHAR *get_scheme_string( INTERNET_SCHEME scheme )
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{
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if (scheme == INTERNET_SCHEME_HTTP) return scheme_http;
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if (scheme == INTERNET_SCHEME_HTTPS) return scheme_https;
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return NULL;
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}
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static BOOL uses_default_port( INTERNET_SCHEME scheme, INTERNET_PORT port )
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{
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if ((scheme == INTERNET_SCHEME_HTTP) && (port == INTERNET_DEFAULT_HTTP_PORT)) return TRUE;
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if ((scheme == INTERNET_SCHEME_HTTPS) && (port == INTERNET_DEFAULT_HTTPS_PORT)) return TRUE;
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return FALSE;
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}
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static DWORD get_comp_length( DWORD len, DWORD flags, WCHAR *comp )
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{
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DWORD ret;
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unsigned int i;
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ret = len ? len : strlenW( comp );
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if (!(flags & ICU_ESCAPE)) return ret;
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for (i = 0; i < len; i++) if (need_escape( comp[i], ESCAPE_FLAG_PERCENT|ESCAPE_FLAG_TILDE )) ret += 2;
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return ret;
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}
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static BOOL get_url_length( URL_COMPONENTS *uc, DWORD flags, DWORD *len )
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{
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static const WCHAR formatW[] = {'%','u',0};
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INTERNET_SCHEME scheme;
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*len = 0;
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if (uc->lpszScheme)
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{
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DWORD scheme_len = get_comp_length( uc->dwSchemeLength, 0, uc->lpszScheme );
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*len += scheme_len;
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scheme = get_scheme( uc->lpszScheme, scheme_len );
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}
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else
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{
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scheme = uc->nScheme;
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if (!scheme) scheme = INTERNET_SCHEME_HTTP;
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*len += strlenW( get_scheme_string( scheme ) );
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}
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*len += 3; /* "://" */
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if (uc->lpszUserName)
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{
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*len += get_comp_length( uc->dwUserNameLength, 0, uc->lpszUserName );
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*len += 1; /* "@" */
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}
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else
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{
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if (uc->lpszPassword)
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{
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set_last_error( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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}
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if (uc->lpszPassword)
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{
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*len += 1; /* ":" */
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*len += get_comp_length( uc->dwPasswordLength, 0, uc->lpszPassword );
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}
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if (uc->lpszHostName)
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{
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*len += get_comp_length( uc->dwHostNameLength, 0, uc->lpszHostName );
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if (!uses_default_port( scheme, uc->nPort ))
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{
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WCHAR port[sizeof("65535")];
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*len += sprintfW( port, formatW, uc->nPort );
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*len += 1; /* ":" */
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}
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if (uc->lpszUrlPath && *uc->lpszUrlPath != '/') *len += 1; /* '/' */
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}
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if (uc->lpszUrlPath) *len += get_comp_length( uc->dwUrlPathLength, flags, uc->lpszUrlPath );
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if (uc->lpszExtraInfo) *len += get_comp_length( uc->dwExtraInfoLength, flags, uc->lpszExtraInfo );
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return TRUE;
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}
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/***********************************************************************
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* WinHttpCreateUrl (winhttp.@)
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*/
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BOOL WINAPI WinHttpCreateUrl( LPURL_COMPONENTS uc, DWORD flags, LPWSTR url, LPDWORD required )
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{
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static const WCHAR formatW[] = {'%','u',0};
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DWORD len;
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INTERNET_SCHEME scheme;
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TRACE("%p, 0x%08x, %p, %p\n", uc, flags, url, required);
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if (!uc || uc->dwStructSize != sizeof(URL_COMPONENTS) || !required)
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{
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set_last_error( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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if (!get_url_length( uc, flags, &len )) return FALSE;
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if (*required < len)
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{
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*required = len + 1;
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set_last_error( ERROR_INSUFFICIENT_BUFFER );
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return FALSE;
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}
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if (!url)
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{
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set_last_error( ERROR_INVALID_PARAMETER );
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return FALSE;
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}
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url[0] = 0;
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*required = len;
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if (uc->lpszScheme)
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{
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len = get_comp_length( uc->dwSchemeLength, 0, uc->lpszScheme );
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memcpy( url, uc->lpszScheme, len * sizeof(WCHAR) );
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url += len;
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scheme = get_scheme( uc->lpszScheme, len );
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}
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else
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{
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const WCHAR *schemeW;
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scheme = uc->nScheme;
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if (!scheme) scheme = INTERNET_SCHEME_HTTP;
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schemeW = get_scheme_string( scheme );
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len = strlenW( schemeW );
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memcpy( url, schemeW, len * sizeof(WCHAR) );
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url += len;
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}
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*url++ = ':';
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*url++ = '/';
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*url++ = '/';
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if (uc->lpszUserName)
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{
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len = get_comp_length( uc->dwUserNameLength, 0, uc->lpszUserName );
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memcpy( url, uc->lpszUserName, len * sizeof(WCHAR) );
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url += len;
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if (uc->lpszPassword)
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{
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*url++ = ':';
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len = get_comp_length( uc->dwPasswordLength, 0, uc->lpszPassword );
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memcpy( url, uc->lpszPassword, len * sizeof(WCHAR) );
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url += len;
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}
|
|
*url++ = '@';
|
|
}
|
|
if (uc->lpszHostName)
|
|
{
|
|
len = get_comp_length( uc->dwHostNameLength, 0, uc->lpszHostName );
|
|
memcpy( url, uc->lpszHostName, len * sizeof(WCHAR) );
|
|
url += len;
|
|
|
|
if (!uses_default_port( scheme, uc->nPort ))
|
|
{
|
|
*url++ = ':';
|
|
url += sprintfW( url, formatW, uc->nPort );
|
|
}
|
|
|
|
/* add slash between hostname and path if necessary */
|
|
if (uc->lpszUrlPath && *uc->lpszUrlPath != '/')
|
|
{
|
|
*url++ = '/';
|
|
}
|
|
}
|
|
if (uc->lpszUrlPath)
|
|
{
|
|
len = get_comp_length( uc->dwUrlPathLength, 0, uc->lpszUrlPath );
|
|
if (flags & ICU_ESCAPE) url += escape_string( url, uc->lpszUrlPath, len, ESCAPE_FLAG_PERCENT|ESCAPE_FLAG_TILDE );
|
|
else
|
|
{
|
|
memcpy( url, uc->lpszUrlPath, len * sizeof(WCHAR) );
|
|
url += len;
|
|
}
|
|
}
|
|
if (uc->lpszExtraInfo)
|
|
{
|
|
len = get_comp_length( uc->dwExtraInfoLength, 0, uc->lpszExtraInfo );
|
|
if (flags & ICU_ESCAPE) url += escape_string( url, uc->lpszExtraInfo, len, ESCAPE_FLAG_PERCENT|ESCAPE_FLAG_TILDE );
|
|
else
|
|
{
|
|
memcpy( url, uc->lpszExtraInfo, len * sizeof(WCHAR) );
|
|
url += len;
|
|
}
|
|
}
|
|
*url = 0;
|
|
set_last_error( ERROR_SUCCESS );
|
|
return TRUE;
|
|
}
|