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22c2ac7273
wine/dlls/shlwapi/url.c
Alexandre Julliard 22c2ac7273 Implemented inline version of the iswxxx functions.
2001-11-08 19:16:34 +00:00

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/*
* Url functions
*
* Copyright 2000 Huw D M Davies for CodeWeavers.
*/
#include <string.h>
#include "windef.h"
#include "winnls.h"
#include "winbase.h"
#include "winerror.h"
#include "wine/unicode.h"
#include "wininet.h"
#include "winreg.h"
#include "shlwapi.h"
#include "debugtools.h"
#include "ordinal.h"
DEFAULT_DEBUG_CHANNEL(shell);
static const unsigned char HashDataLookup[256] = {
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0xA1, 0x8D, 0x56, 0x3C, 0x42, 0x80, 0x53, 0x9C, 0xF1, 0x4F, 0x2E, 0xA8, 0xC6,
0x29, 0xFE, 0xB2, 0x55, 0xFD, 0xED, 0xFA, 0x9A, 0x85, 0x58, 0x23, 0xCE, 0x5F,
0x74, 0xFC, 0xC0, 0x36, 0xDD, 0x66, 0xDA, 0xFF, 0xF0, 0x52, 0x6A, 0x9E, 0xC9,
0x3D, 0x03, 0x59, 0x09, 0x2A, 0x9B, 0x9F, 0x5D, 0xA6, 0x50, 0x32, 0x22, 0xAF,
0xC3, 0x64, 0x63, 0x1A, 0x96, 0x10, 0x91, 0x04, 0x21, 0x08, 0xBD, 0x79, 0x40,
0x4D, 0x48, 0xD0, 0xF5, 0x82, 0x7A, 0x8F, 0x37, 0x69, 0x86, 0x1D, 0xA4, 0xB9,
0xC2, 0xC1, 0xEF, 0x65, 0xF2, 0x05, 0xAB, 0x7E, 0x0B, 0x4A, 0x3B, 0x89, 0xE4,
0x6C, 0xBF, 0xE8, 0x8B, 0x06, 0x18, 0x51, 0x14, 0x7F, 0x11, 0x5B, 0x5C, 0xFB,
0x97, 0xE1, 0xCF, 0x15, 0x62, 0x71, 0x70, 0x54, 0xE2, 0x12, 0xD6, 0xC7, 0xBB,
0x0D, 0x20, 0x5E, 0xDC, 0xE0, 0xD4, 0xF7, 0xCC, 0xC4, 0x2B, 0xF9, 0xEC, 0x2D,
0xF4, 0x6F, 0xB6, 0x99, 0x88, 0x81, 0x5A, 0xD9, 0xCA, 0x13, 0xA5, 0xE7, 0x47,
0xE6, 0x8E, 0x60, 0xE3, 0x3E, 0xB3, 0xF6, 0x72, 0xA2, 0x35, 0xA0, 0xD7, 0xCD,
0xB4, 0x2F, 0x6D, 0x2C, 0x26, 0x1F, 0x95, 0x87, 0x00, 0xD8, 0x34, 0x3F, 0x17,
0x25, 0x45, 0x27, 0x75, 0x92, 0xB8, 0xA3, 0xC8, 0xDE, 0xEB, 0xF8, 0xF3, 0xDB,
0x0A, 0x98, 0x83, 0x7B, 0xE5, 0xCB, 0x4C, 0x78, 0xD1 };
static BOOL URL_NeedEscapeA(CHAR ch, DWORD dwFlags)
{
if (isalnum(ch))
return FALSE;
if(dwFlags & URL_ESCAPE_SPACES_ONLY) {
if(ch == ' ')
return TRUE;
else
return FALSE;
}
if ((dwFlags & URL_ESCAPE_PERCENT) && (ch == '%'))
return TRUE;
if (ch <= 31 || ch >= 127)
return TRUE;
else {
switch (ch) {
case ' ':
case '<':
case '>':
case '\"':
case '{':
case '}':
case '|':
case '\\':
case '^':
case ']':
case '[':
case '`':
case '&':
return TRUE;
case '/':
case '?':
if (dwFlags & URL_ESCAPE_SEGMENT_ONLY) return TRUE;
default:
return FALSE;
}
}
}
static BOOL URL_NeedEscapeW(WCHAR ch, DWORD dwFlags)
{
if (isalnumW(ch))
return FALSE;
if(dwFlags & URL_ESCAPE_SPACES_ONLY) {
if(ch == L' ')
return TRUE;
else
return FALSE;
}
if ((dwFlags & URL_ESCAPE_PERCENT) && (ch == L'%'))
return TRUE;
if (ch <= 31 || ch >= 127)
return TRUE;
else {
switch (ch) {
case L' ':
case L'<':
case L'>':
case L'\"':
case L'{':
case L'}':
case L'|':
case L'\\':
case L'^':
case L']':
case L'[':
case L'`':
case L'&':
return TRUE;
case L'/':
case L'?':
if (dwFlags & URL_ESCAPE_SEGMENT_ONLY) return TRUE;
default:
return FALSE;
}
}
}
static BOOL URL_JustLocation(LPCWSTR str)
{
while(*str && (*str == L'/')) str++;
if (*str) {
while (*str && ((*str == L'-') ||
(*str == L'.') ||
isalnumW(*str))) str++;
if (*str == L'/') return FALSE;
}
return TRUE;
}
/*************************************************************************
* UrlCanonicalizeA [SHLWAPI.@]
*
* Uses the W version to do job.
*/
HRESULT WINAPI UrlCanonicalizeA(LPCSTR pszUrl, LPSTR pszCanonicalized,
LPDWORD pcchCanonicalized, DWORD dwFlags)
{
LPWSTR base, canonical;
DWORD ret, len, len2;
TRACE("(%s %p %p 0x%08lx) using W version\n",
debugstr_a(pszUrl), pszCanonicalized,
pcchCanonicalized, dwFlags);
base = (LPWSTR) HeapAlloc(GetProcessHeap(), 0,
(2*INTERNET_MAX_URL_LENGTH) * sizeof(WCHAR));
canonical = base + INTERNET_MAX_URL_LENGTH;
MultiByteToWideChar(0, 0, pszUrl, -1, base, INTERNET_MAX_URL_LENGTH);
len = INTERNET_MAX_URL_LENGTH;
ret = UrlCanonicalizeW(base, canonical, &len, dwFlags);
if (ret != S_OK) {
HeapFree(GetProcessHeap(), 0, base);
return ret;
}
len2 = WideCharToMultiByte(0, 0, canonical, len, 0, 0, 0, 0);
if (len2 > *pcchCanonicalized) {
*pcchCanonicalized = len;
HeapFree(GetProcessHeap(), 0, base);
return E_POINTER;
}
WideCharToMultiByte(0, 0, canonical, len+1, pszCanonicalized,
*pcchCanonicalized, 0, 0);
*pcchCanonicalized = len2;
HeapFree(GetProcessHeap(), 0, base);
return S_OK;
}
/*************************************************************************
* UrlCanonicalizeW [SHLWAPI.@]
*
*
* MSDN is wrong (at 10/30/01 - go figure). This should support the
* following flags: GLA
* URL_DONT_ESCAPE_EXTRA_INFO 0x02000000
* URL_ESCAPE_SPACES_ONLY 0x04000000
* URL_ESCAPE_PERCENT 0x00001000
* URL_ESCAPE_UNSAFE 0x10000000
* URL_UNESCAPE 0x10000000
* URL_DONT_SIMPLIFY 0x08000000
* URL_ESCAPE_SEGMENT_ONLY 0x00002000
*/
HRESULT WINAPI UrlCanonicalizeW(LPCWSTR pszUrl, LPWSTR pszCanonicalized,
LPDWORD pcchCanonicalized, DWORD dwFlags)
{
HRESULT hr = S_OK;
DWORD EscapeFlags;
LPWSTR lpszUrlCpy, wk1, wk2, mp, root;
INT nLen, nByteLen, state;
TRACE("(%s %p %p 0x%08lx)\n", debugstr_w(pszUrl), pszCanonicalized,
pcchCanonicalized, dwFlags);
nByteLen = (lstrlenW(pszUrl) + 1) * sizeof(WCHAR); /* length in bytes */
lpszUrlCpy = HeapAlloc(GetProcessHeap(), 0, nByteLen);
if (dwFlags & URL_DONT_SIMPLIFY)
memcpy(lpszUrlCpy, pszUrl, nByteLen);
else {
/*
* state =
* 0 initial 1,3
* 1 have 2[+] alnum 2,3
* 2 have scheme (found :) 4,6,3
* 3 failed (no location)
* 4 have // 5,3
* 5 have 1[+] alnum 6,3
* 6 have location (found /) save root location
*/
wk1 = (LPWSTR)pszUrl;
wk2 = lpszUrlCpy;
state = 0;
while (*wk1) {
switch (state) {
case 0:
if (!isalnumW(*wk1)) {state = 3; break;}
*wk2++ = *wk1++;
if (!isalnumW(*wk1)) {state = 3; break;}
*wk2++ = *wk1++;
state = 1;
break;
case 1:
*wk2++ = *wk1;
if (*wk1++ == L':') state = 2;
break;
case 2:
if (*wk1 != L'/') {state = 3; break;}
*wk2++ = *wk1++;
if (*wk1 != L'/') {state = 6; break;}
*wk2++ = *wk1++;
state = 4;
break;
case 3:
strcpyW(wk2, wk1);
wk1 += strlenW(wk1);
wk2 += strlenW(wk2);
break;
case 4:
if (!isalnumW(*wk1) && (*wk1 != L'-')) {state = 3; break;}
while(isalnumW(*wk1) || (*wk1 == L'-')) *wk2++ = *wk1++;
state = 5;
break;
case 5:
if (*wk1 != L'/') {state = 3; break;}
*wk2++ = *wk1++;
state = 6;
break;
case 6:
/* Now at root location, cannot back up any more. */
/* "root" will point at the '/' */
root = wk2-1;
while (*wk1) {
TRACE("wk1=%c\n", (CHAR)*wk1);
mp = strchrW(wk1, L'/');
if (!mp) {
strcpyW(wk2, wk1);
wk1 += strlenW(wk1);
wk2 += strlenW(wk2);
continue;
}
nLen = mp - wk1 + 1;
strncpyW(wk2, wk1, nLen);
wk2 += nLen;
wk1 += nLen;
if (*wk1 == L'.') {
TRACE("found '/.'\n");
if (*(wk1+1) == L'/') {
/* case of /./ -> skip the ./ */
wk1 += 2;
}
else if (*(wk1+1) == L'.') {
/* found /.. look for next / */
TRACE("found '/..'\n");
if (*(wk1+2) == L'/') {
/* case /../ -> need to backup wk2 */
TRACE("found '/../'\n");
*(wk2-1) = L'\0'; /* set end of string */
mp = strrchrW(root, L'/');
if (mp && (mp >= root)) {
/* found valid backup point */
wk2 = mp + 1;
wk1 += 3;
}
else {
/* did not find point, restore '/' */
*(wk2-1) = L'/';
}
}
}
}
}
*wk2 = L'\0';
break;
default:
FIXME("how did we get here - state=%d\n", state);
return E_INVALIDARG;
}
}
*wk2 = L'\0';
TRACE("Simplified, orig <%s>, simple <%s>\n",
debugstr_w(pszUrl), debugstr_w(lpszUrlCpy));
}
if(dwFlags & URL_UNESCAPE)
UrlUnescapeW(lpszUrlCpy, NULL, NULL, URL_UNESCAPE_INPLACE);
if((EscapeFlags = dwFlags & (URL_ESCAPE_UNSAFE |
URL_ESCAPE_SPACES_ONLY |
URL_ESCAPE_PERCENT |
URL_DONT_ESCAPE_EXTRA_INFO |
URL_ESCAPE_SEGMENT_ONLY ))) {
EscapeFlags &= ~URL_ESCAPE_UNSAFE;
hr = UrlEscapeW(lpszUrlCpy, pszCanonicalized, pcchCanonicalized,
EscapeFlags);
} else { /* No escapping needed, just copy the string */
nLen = lstrlenW(lpszUrlCpy);
if(nLen < *pcchCanonicalized)
memcpy(pszCanonicalized, lpszUrlCpy, (nLen + 1)*sizeof(WCHAR));
else {
hr = E_POINTER;
nLen++;
}
*pcchCanonicalized = nLen;
}
HeapFree(GetProcessHeap(), 0, lpszUrlCpy);
if (hr == S_OK)
TRACE("result %s\n", debugstr_w(pszCanonicalized));
return hr;
}
/*************************************************************************
* UrlCombineA [SHLWAPI.@]
*
* Uses the W version to do job.
*/
HRESULT WINAPI UrlCombineA(LPCSTR pszBase, LPCSTR pszRelative,
LPSTR pszCombined, LPDWORD pcchCombined,
DWORD dwFlags)
{
LPWSTR base, relative, combined;
DWORD ret, len, len2;
TRACE("(base %s, Relative %s, Combine size %ld, flags %08lx) using W version\n",
debugstr_a(pszBase),debugstr_a(pszRelative),
*pcchCombined,dwFlags);
base = (LPWSTR) HeapAlloc(GetProcessHeap(), 0,
(3*INTERNET_MAX_URL_LENGTH) * sizeof(WCHAR));
relative = base + INTERNET_MAX_URL_LENGTH;
combined = relative + INTERNET_MAX_URL_LENGTH;
MultiByteToWideChar(0, 0, pszBase, -1, base, INTERNET_MAX_URL_LENGTH);
MultiByteToWideChar(0, 0, pszRelative, -1, relative, INTERNET_MAX_URL_LENGTH);
len = INTERNET_MAX_URL_LENGTH;
ret = UrlCombineW(base, relative, combined, &len, dwFlags);
if (ret != S_OK) {
HeapFree(GetProcessHeap(), 0, base);
return ret;
}
len2 = WideCharToMultiByte(0, 0, combined, len, 0, 0, 0, 0);
if (len2 > *pcchCombined) {
*pcchCombined = len;
HeapFree(GetProcessHeap(), 0, base);
return E_POINTER;
}
WideCharToMultiByte(0, 0, combined, len+1, pszCombined, *pcchCombined,
0, 0);
*pcchCombined = len2;
HeapFree(GetProcessHeap(), 0, base);
return S_OK;
}
/*************************************************************************
* UrlCombineW [SHLWAPI.@]
*/
HRESULT WINAPI UrlCombineW(LPCWSTR pszBase, LPCWSTR pszRelative,
LPWSTR pszCombined, LPDWORD pcchCombined,
DWORD dwFlags)
{
UNKNOWN_SHLWAPI_2 base, relative;
DWORD myflags, sizeloc = 0;
DWORD len, res1, res2, process_case = 0;
LPWSTR work, preliminary, mbase, mrelative;
WCHAR myfilestr[] = {'f','i','l','e',':','/','/','/','\0'};
WCHAR single_slash[] = {'/','\0'};
HRESULT ret;
TRACE("(base %s, Relative %s, Combine size %ld, flags %08lx)\n",
debugstr_w(pszBase),debugstr_w(pszRelative),
*pcchCombined,dwFlags);
base.size = 24;
relative.size = 24;
/* Get space for duplicates of the input and the output */
preliminary = HeapAlloc(GetProcessHeap(), 0, (3*INTERNET_MAX_URL_LENGTH) *
sizeof(WCHAR));
mbase = preliminary + INTERNET_MAX_URL_LENGTH;
mrelative = mbase + INTERNET_MAX_URL_LENGTH;
*preliminary = L'\0';
/* Canonicalize the base input prior to looking for the scheme */
myflags = dwFlags & (URL_DONT_SIMPLIFY | URL_UNESCAPE);
len = INTERNET_MAX_URL_LENGTH;
ret = UrlCanonicalizeW(pszBase, mbase, &len, myflags);
/* Canonicalize the relative input prior to looking for the scheme */
len = INTERNET_MAX_URL_LENGTH;
ret = UrlCanonicalizeW(pszRelative, mrelative, &len, myflags);
/* See if the base has a scheme */
res1 = SHLWAPI_2(mbase, &base);
if (res1) {
/* if pszBase has no scheme, then return pszRelative */
TRACE("no scheme detected in Base\n");
process_case = 1;
}
else do {
/* get size of location field (if it exists) */
work = (LPWSTR)base.ap2;
sizeloc = 0;
if (*work++ == L'/') {
if (*work++ == L'/') {
/* At this point have start of location and
* it ends at next '/' or end of string.
*/
while(*work && (*work != L'/')) work++;
sizeloc = work - base.ap2;
}
}
/* Change .sizep2 to not have the last leaf in it,
* Note: we need to start after the location (if it exists)
*/
work = strrchrW((base.ap2+sizeloc), L'/');
if (work) {
len = work - base.ap2 + 1;
base.sizep2 = len;
}
/*
* At this point:
* .ap2 points to location (starting with '//')
* .sizep2 length of location (above) and rest less the last
* leaf (if any)
* sizeloc length of location (above) up to but not including
* the last '/'
*/
res2 = SHLWAPI_2(mrelative, &relative);
if (res2) {
/* no scheme in pszRelative */
TRACE("no scheme detected in Relative\n");
relative.ap2 = mrelative; /* case 3,4,5 depends on this */
relative.sizep2 = strlenW(mrelative);
if (*pszRelative == L':') {
/* case that is either left alone or uses pszBase */
if (dwFlags & URL_PLUGGABLE_PROTOCOL) {
process_case = 5;
break;
}
process_case = 1;
break;
}
if (isalnum(*mrelative) && (*(mrelative + 1) == L':')) {
/* case that becomes "file:///" */
strcpyW(preliminary, myfilestr);
process_case = 1;
break;
}
if ((*mrelative == L'/') && (*(mrelative+1) == L'/')) {
/* pszRelative has location and rest */
process_case = 3;
break;
}
if (*mrelative == L'/') {
/* case where pszRelative is root to location */
process_case = 4;
break;
}
process_case = (*base.ap2 == L'/') ? 5 : 3;
break;
}
/* handle cases where pszRelative has scheme */
if ((base.sizep1 == relative.sizep1) &&
(strncmpW(base.ap1, relative.ap1, base.sizep1) == 0)) {
/* since the schemes are the same */
if ((*relative.ap2 == L'/') && (*(relative.ap2+1) == L'/')) {
/* case where pszRelative replaces location and following */
process_case = 3;
break;
}
if (*relative.ap2 == L'/') {
/* case where pszRelative is root to location */
process_case = 4;
break;
}
/* case where scheme is followed by document path */
process_case = 5;
break;
}
if ((*relative.ap2 == L'/') && (*(relative.ap2+1) == L'/')) {
/* case where pszRelative replaces scheme, location,
* and following and handles PLUGGABLE
*/
process_case = 2;
break;
}
process_case = 1;
break;
} while(FALSE); /* a litte trick to allow easy exit from nested if's */
ret = S_OK;
switch (process_case) {
case 1: /*
* Return pszRelative appended to what ever is in pszCombined,
* (which may the string "file:///"
*/
len = strlenW(mrelative) + strlenW(preliminary);
if (len+1 > *pcchCombined) {
*pcchCombined = len;
ret = E_POINTER;
break;
}
strcatW(preliminary, mrelative);
break;
case 2: /*
* Same as case 1, but if URL_PLUGGABLE_PROTOCOL was specified
* and pszRelative starts with "//", then append a "/"
*/
len = strlenW(mrelative) + 1;
if (len+1 > *pcchCombined) {
*pcchCombined = len;
ret = E_POINTER;
break;
}
strcpyW(preliminary, mrelative);
if (!(dwFlags & URL_PLUGGABLE_PROTOCOL) &&
URL_JustLocation(relative.ap2))
strcatW(preliminary, single_slash);
break;
case 3: /*
* Return the pszBase scheme with pszRelative. Basicly
* keeps the scheme and replaces the domain and following.
*/
len = base.sizep1 + 1 + relative.sizep2 + 1;
if (len+1 > *pcchCombined) {
*pcchCombined = len;
ret = E_POINTER;
break;
}
strncpyW(preliminary, base.ap1, base.sizep1 + 1);
work = preliminary + base.sizep1 + 1;
strcpyW(work, relative.ap2);
if (!(dwFlags & URL_PLUGGABLE_PROTOCOL) &&
URL_JustLocation(relative.ap2))
strcatW(work, single_slash);
break;
case 4: /*
* Return the pszBase scheme and location but everything
* after the location is pszRelative. (Replace document
* from root on.)
*/
len = base.sizep1 + 1 + sizeloc + relative.sizep2 + 1;
if (len+1 > *pcchCombined) {
*pcchCombined = len;
ret = E_POINTER;
break;
}
strncpyW(preliminary, base.ap1, base.sizep1+1+sizeloc);
work = preliminary + base.sizep1 + 1 + sizeloc;
if (dwFlags & URL_PLUGGABLE_PROTOCOL)
*(work++) = L'/';
strcpyW(work, relative.ap2);
break;
case 5: /*
* Return the pszBase without its document (if any) and
* append pszRelative after its scheme.
*/
len = base.sizep1 + 1 + base.sizep2 + relative.sizep2;
if (len+1 > *pcchCombined) {
*pcchCombined = len;
ret = E_POINTER;
break;
}
strncpyW(preliminary, base.ap1, base.sizep1+1+base.sizep2);
work = preliminary + base.sizep1+1+base.sizep2 - 1;
if (*work++ != L'/')
*(work++) = L'/';
strcpyW(work, relative.ap2);
break;
default:
FIXME("How did we get here????? process_case=%ld\n", process_case);
ret = E_INVALIDARG;
}
if (ret == S_OK) {
/*
* Now that the combining is done, process the escape options if
* necessary, otherwise just copy the string.
*/
myflags = dwFlags & (URL_ESCAPE_PERCENT |
URL_ESCAPE_SPACES_ONLY |
URL_DONT_ESCAPE_EXTRA_INFO |
URL_ESCAPE_SEGMENT_ONLY);
if (myflags)
ret = UrlEscapeW(preliminary, pszCombined,
pcchCombined, myflags);
else {
len = (strlenW(preliminary) + 1) * sizeof(WCHAR);
memcpy(pszCombined, preliminary, len);
*pcchCombined = strlenW(preliminary);
}
TRACE("return-%ld len=%ld, %s\n",
process_case, *pcchCombined, debugstr_w(pszCombined));
}
HeapFree(GetProcessHeap(), 0, preliminary);
return ret;
}
/*************************************************************************
* UrlEscapeA [SHLWAPI.@]
*
* Converts unsafe characters into their escape sequences.
*
* The converted string is returned in pszEscaped if the buffer size
* (which should be supplied in pcchEscaped) is large enough, in this
* case the function returns S_OK and pcchEscaped contains the length
* of the escaped string. If the buffer is not large enough the
* function returns E_POINTER and pcchEscaped contains the required
* buffer size (including room for the '\0').
*
* By default the function stops converting at the first '?' or
* '#'. [MSDN says differently]. If URL_ESCAPE_SPACE_ONLY flag is set
* then only spaces are converted, but the conversion continues past a
* '?' or '#'.
*
* BUGS:
* Have now implemented the following flags:
* URL_ESCAPE_SPACES_ONLY
* URL_DONT_ESCAPE_EXTRA_INFO
* URL_ESCAPE_SEGMENT_ONLY
* URL_ESCAPE_PERCENT
* Initial testing seems to indicate that this is now working like
* native shlwapi version 5. Note that these functions did not work
* well (or at all) in shlwapi version 4.
*
*/
HRESULT WINAPI UrlEscapeA(
LPCSTR pszUrl,
LPSTR pszEscaped,
LPDWORD pcchEscaped,
DWORD dwFlags)
{
LPCSTR src;
DWORD needed = 0, ret;
BOOL stop_escapping = FALSE;
char next[3], *dst = pszEscaped;
char hex[] = "0123456789ABCDEF";
INT len;
TRACE("(%s %p %p 0x%08lx)\n", debugstr_a(pszUrl), pszEscaped,
pcchEscaped, dwFlags);
if(dwFlags & ~(URL_ESCAPE_SPACES_ONLY |
URL_ESCAPE_SEGMENT_ONLY |
URL_DONT_ESCAPE_EXTRA_INFO |
URL_ESCAPE_PERCENT))
FIXME("Unimplemented flags: %08lx\n", dwFlags);
/* fix up flags */
if (dwFlags & URL_ESCAPE_SPACES_ONLY)
/* if SPACES_ONLY specified, reset the other controls */
dwFlags &= ~(URL_DONT_ESCAPE_EXTRA_INFO |
URL_ESCAPE_PERCENT |
URL_ESCAPE_SEGMENT_ONLY);
else
/* if SPACES_ONLY *not* specified the assume DONT_ESCAPE_EXTRA_INFO */
dwFlags |= URL_DONT_ESCAPE_EXTRA_INFO;
for(src = pszUrl; *src; src++) {
if(!(dwFlags & URL_ESCAPE_SEGMENT_ONLY) &&
(dwFlags & URL_DONT_ESCAPE_EXTRA_INFO) &&
(*src == '#' || *src == '?'))
stop_escapping = TRUE;
if(URL_NeedEscapeA(*src, dwFlags) && stop_escapping == FALSE) {
/* TRACE("escaping %c\n", *src); */
next[0] = '%';
next[1] = hex[(*src >> 4) & 0xf];
next[2] = hex[*src & 0xf];
len = 3;
} else {
/* TRACE("passing %c\n", *src); */
next[0] = *src;
len = 1;
}
if(needed + len <= *pcchEscaped) {
memcpy(dst, next, len);
dst += len;
}
needed += len;
}
if(needed < *pcchEscaped) {
*dst = '\0';
ret = S_OK;
} else {
needed++; /* add one for the '\0' */
ret = E_POINTER;
}
*pcchEscaped = needed;
return ret;
}
/*************************************************************************
* UrlEscapeW [SHLWAPI.@]
*
* See UrlEscapeA for list of assumptions, bugs, and FIXMEs
*/
HRESULT WINAPI UrlEscapeW(
LPCWSTR pszUrl,
LPWSTR pszEscaped,
LPDWORD pcchEscaped,
DWORD dwFlags)
{
LPCWSTR src;
DWORD needed = 0, ret;
BOOL stop_escapping = FALSE;
WCHAR next[5], *dst = pszEscaped;
CHAR hex[] = "0123456789ABCDEF";
INT len;
TRACE("(%s %p %p 0x%08lx)\n", debugstr_w(pszUrl), pszEscaped,
pcchEscaped, dwFlags);
if(dwFlags & ~(URL_ESCAPE_SPACES_ONLY |
URL_ESCAPE_SEGMENT_ONLY |
URL_DONT_ESCAPE_EXTRA_INFO |
URL_ESCAPE_PERCENT))
FIXME("Unimplemented flags: %08lx\n", dwFlags);
/* fix up flags */
if (dwFlags & URL_ESCAPE_SPACES_ONLY)
/* if SPACES_ONLY specified, reset the other controls */
dwFlags &= ~(URL_DONT_ESCAPE_EXTRA_INFO |
URL_ESCAPE_PERCENT |
URL_ESCAPE_SEGMENT_ONLY);
else
/* if SPACES_ONLY *not* specified the assume DONT_ESCAPE_EXTRA_INFO */
dwFlags |= URL_DONT_ESCAPE_EXTRA_INFO;
for(src = pszUrl; *src; src++) {
/*
* if(!(dwFlags & URL_ESCAPE_SPACES_ONLY) &&
* (*src == L'#' || *src == L'?'))
* stop_escapping = TRUE;
*/
if(!(dwFlags & URL_ESCAPE_SEGMENT_ONLY) &&
(dwFlags & URL_DONT_ESCAPE_EXTRA_INFO) &&
(*src == L'#' || *src == L'?'))
stop_escapping = TRUE;
if(URL_NeedEscapeW(*src, dwFlags) && stop_escapping == FALSE) {
/* TRACE("escaping %c\n", *src); */
next[0] = L'%';
/*
* I would have assumed that the W form would escape
* the character with 4 hex digits (or even 8),
* however, experiments show that native shlwapi escapes
* with only 2 hex digits.
* next[1] = hex[(*src >> 12) & 0xf];
* next[2] = hex[(*src >> 8) & 0xf];
* next[3] = hex[(*src >> 4) & 0xf];
* next[4] = hex[*src & 0xf];
* len = 5;
*/
next[1] = hex[(*src >> 4) & 0xf];
next[2] = hex[*src & 0xf];
len = 3;
} else {
/* TRACE("passing %c\n", *src); */
next[0] = *src;
len = 1;
}
if(needed + len <= *pcchEscaped) {
memcpy(dst, next, len*sizeof(WCHAR));
dst += len;
}
needed += len;
}
if(needed < *pcchEscaped) {
*dst = L'\0';
ret = S_OK;
} else {
needed++; /* add one for the '\0' */
ret = E_POINTER;
}
*pcchEscaped = needed;
return ret;
}
/*************************************************************************
* UrlUnescapeA [SHLWAPI.@]
*
* Converts escape sequences back to ordinary characters.
*
* If URL_ESCAPE_INPLACE is set in dwFlags then pszUnescaped and
* pcchUnescaped are ignored and the converted string is returned in
* pszUrl, otherwise the string is returned in pszUnescaped.
* pcchUnescaped should contain the size of pszUnescaped on calling
* and will contain the length the the returned string on return if
* the buffer is big enough else it will contain the buffer size
* required (including room for the '\0'). The function returns S_OK
* on success or E_POINTER if the buffer is not large enough. If the
* URL_DONT_ESCAPE_EXTRA_INFO flag is set then the conversion stops at
* the first occurrence of either '?' or '#'.
*
*/
HRESULT WINAPI UrlUnescapeA(
LPCSTR pszUrl,
LPSTR pszUnescaped,
LPDWORD pcchUnescaped,
DWORD dwFlags)
{
char *dst, next;
LPCSTR src;
HRESULT ret;
DWORD needed;
BOOL stop_unescapping = FALSE;
TRACE("(%s, %p, %p, 0x%08lx)\n", debugstr_a(pszUrl), pszUnescaped,
pcchUnescaped, dwFlags);
if(dwFlags & URL_UNESCAPE_INPLACE)
dst = (char*)pszUrl;
else
dst = pszUnescaped;
for(src = pszUrl, needed = 0; *src; src++, needed++) {
if(dwFlags & URL_DONT_UNESCAPE_EXTRA_INFO &&
(*src == '#' || *src == '?')) {
stop_unescapping = TRUE;
next = *src;
} else if(*src == '%' && isxdigit(*(src + 1)) && isxdigit(*(src + 2))
&& stop_unescapping == FALSE) {
INT ih;
char buf[3];
memcpy(buf, src + 1, 2);
buf[2] = '\0';
ih = strtol(buf, NULL, 16);
next = (CHAR) ih;
src += 2; /* Advance to end of escape */
} else
next = *src;
if(dwFlags & URL_UNESCAPE_INPLACE || needed < *pcchUnescaped)
*dst++ = next;
}
if(dwFlags & URL_UNESCAPE_INPLACE || needed < *pcchUnescaped) {
*dst = '\0';
ret = S_OK;
} else {
needed++; /* add one for the '\0' */
ret = E_POINTER;
}
if(!(dwFlags & URL_UNESCAPE_INPLACE))
*pcchUnescaped = needed;
if (ret == S_OK) {
TRACE("result %s\n", (dwFlags & URL_UNESCAPE_INPLACE) ?
debugstr_a(pszUrl) : debugstr_a(pszUnescaped));
}
return ret;
}
/*************************************************************************
* UrlUnescapeW [SHLWAPI.@]
*
* See UrlUnescapeA for list of assumptions, bugs, and FIXMEs
*/
HRESULT WINAPI UrlUnescapeW(
LPCWSTR pszUrl,
LPWSTR pszUnescaped,
LPDWORD pcchUnescaped,
DWORD dwFlags)
{
WCHAR *dst, next;
LPCWSTR src;
HRESULT ret;
DWORD needed;
BOOL stop_unescapping = FALSE;
TRACE("(%s, %p, %p, 0x%08lx)\n", debugstr_w(pszUrl), pszUnescaped,
pcchUnescaped, dwFlags);
if(dwFlags & URL_UNESCAPE_INPLACE)
dst = (WCHAR*)pszUrl;
else
dst = pszUnescaped;
for(src = pszUrl, needed = 0; *src; src++, needed++) {
if(dwFlags & URL_DONT_UNESCAPE_EXTRA_INFO &&
(*src == L'#' || *src == L'?')) {
stop_unescapping = TRUE;
next = *src;
} else if(*src == L'%' && isxdigitW(*(src + 1)) && isxdigitW(*(src + 2))
&& stop_unescapping == FALSE) {
INT ih;
WCHAR buf[3];
memcpy(buf, src + 1, 2*sizeof(WCHAR));
buf[2] = L'\0';
ih = wcstol(buf, NULL, 16);
next = (WCHAR) ih;
src += 2; /* Advance to end of escape */
} else
next = *src;
if(dwFlags & URL_UNESCAPE_INPLACE || needed < *pcchUnescaped)
*dst++ = next;
}
if(dwFlags & URL_UNESCAPE_INPLACE || needed < *pcchUnescaped) {
*dst = L'\0';
ret = S_OK;
} else {
needed++; /* add one for the '\0' */
ret = E_POINTER;
}
if(!(dwFlags & URL_UNESCAPE_INPLACE))
*pcchUnescaped = needed;
if (ret == S_OK) {
TRACE("result %s\n", (dwFlags & URL_UNESCAPE_INPLACE) ?
debugstr_w(pszUrl) : debugstr_w(pszUnescaped));
}
return ret;
}
/*************************************************************************
* UrlGetLocationA [SHLWAPI.@]
*/
LPCSTR WINAPI UrlGetLocationA(
LPCSTR pszUrl)
{
FIXME("(%s): stub\n", debugstr_a(pszUrl));
return 0;
}
/*************************************************************************
* UrlGetLocationW [SHLWAPI.@]
*/
LPCWSTR WINAPI UrlGetLocationW(
LPCWSTR pszUrl)
{
FIXME("(%s): stub\n", debugstr_w(pszUrl));
return 0;
}
/*************************************************************************
* HashData [SHLWAPI.@]
*
* Hash an input block into a variable sized digest.
*/
BOOL WINAPI HashData(const unsigned char *lpSrc, INT nSrcLen,
unsigned char *lpDest, INT nDestLen)
{
INT srcCount = nSrcLen - 1, destCount = nDestLen - 1;
if (IsBadReadPtr(lpSrc, nSrcLen) ||
IsBadWritePtr(lpDest, nDestLen))
return FALSE;
while (destCount >= 0)
{
lpDest[destCount] = (destCount & 0xff);
destCount--;
}
while (srcCount >= 0)
{
destCount = nDestLen - 1;
while (destCount >= 0)
{
lpDest[destCount] = HashDataLookup[lpSrc[srcCount] ^ lpDest[destCount]];
destCount--;
}
srcCount--;
}
return TRUE;
}
/*************************************************************************
* UrlHashA [SHLWAPI.@]
*
* Hash an ASCII URL.
*/
HRESULT WINAPI UrlHashA(LPCSTR pszUrl, unsigned char *lpDest, INT nDestLen)
{
if (IsBadStringPtrA(pszUrl, -1) || IsBadWritePtr(lpDest, nDestLen))
return E_INVALIDARG;
HashData(pszUrl, strlen(pszUrl), lpDest, nDestLen);
return NOERROR;
}
/*************************************************************************
* UrlApplySchemeW [SHLWAPI.@]
*/
HRESULT WINAPI UrlApplySchemeW(LPCWSTR pszIn, LPWSTR pszOut, LPDWORD pcchOut, DWORD dwFlags)
{
HRESULT err = NOERROR;
FIXME("(%s %p %p %08lx): stub !\n", debugstr_w(pszIn), pszOut, pcchOut, dwFlags);
strcpyW(pszOut, pszIn);
*pcchOut = (err != E_POINTER) ? strlenW(pszOut) : 0;
return err;
}
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