293 lines
7.6 KiB
C
293 lines
7.6 KiB
C
/*
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* Url functions
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*
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* Copyright 2000 Huw D M Davies for CodeWeavers.
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*/
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "shlwapi.h"
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(shell);
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static BOOL URL_NeedEscape(CHAR ch, DWORD dwFlags)
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{
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if (isalnum(ch))
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return FALSE;
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if(dwFlags & URL_ESCAPE_SPACES_ONLY) {
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if(ch == ' ')
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return TRUE;
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else
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return FALSE;
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}
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if (ch <= 31 || ch >= 127)
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return TRUE;
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else {
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switch (ch) {
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case ' ':
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case '<':
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case '>':
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case '\"':
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case '{':
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case '}':
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case '|':
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case '\\':
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case '^':
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case ']':
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case '[':
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case '`':
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case '&':
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return TRUE;
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default:
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return FALSE;
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}
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}
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}
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/*************************************************************************
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* UrlCanonicalizeA [SHLWAPI]
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*/
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HRESULT WINAPI UrlCanonicalizeA(LPCSTR pszUrl, LPSTR pszCanonicalized,
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LPDWORD pcchCanonicalized, DWORD dwFlags)
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{
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HRESULT hr = S_OK;
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LPSTR lpszUrlCpy;
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INT nLen;
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TRACE("(%s %p %p 0x%08lx)\n", debugstr_a(pszUrl), pszCanonicalized,
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pcchCanonicalized, dwFlags);
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nLen = strlen(pszUrl);
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lpszUrlCpy = HeapAlloc(GetProcessHeap(), 0, nLen + 1);
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if (dwFlags & URL_DONT_SIMPLIFY)
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memcpy(lpszUrlCpy, pszUrl, nLen + 1);
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else {
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FIXME("Simplify path\n");
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memcpy(lpszUrlCpy, pszUrl, nLen + 1);
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}
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if(dwFlags & URL_UNESCAPE)
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UrlUnescapeA(lpszUrlCpy, NULL, NULL, URL_UNESCAPE_INPLACE);
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if(dwFlags & (URL_ESCAPE_UNSAFE | URL_ESCAPE_SPACES_ONLY)) {
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DWORD EscapeFlags = dwFlags & (URL_ESCAPE_SPACES_ONLY
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/* | URL_ESCAPE_PERCENT */);
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hr = UrlEscapeA(lpszUrlCpy, pszCanonicalized, pcchCanonicalized,
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EscapeFlags);
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} else { /* No escapping needed, just copy the string */
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nLen = strlen(lpszUrlCpy);
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if(nLen < *pcchCanonicalized)
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memcpy(pszCanonicalized, lpszUrlCpy, nLen + 1);
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else {
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hr = E_POINTER;
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nLen++;
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}
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*pcchCanonicalized = nLen;
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}
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HeapFree(GetProcessHeap(), 0, lpszUrlCpy);
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return hr;
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}
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/*************************************************************************
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* UrlCanonicalizeW [SHLWAPI]
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*/
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HRESULT WINAPI UrlCanonicalizeW(LPCWSTR pszUrl, LPWSTR pszCanonicalized,
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LPDWORD pcchCanonicalized, DWORD dwFlags)
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{
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FIXME("(%s %p %p 0x%08lx): stub\n",debugstr_w(pszUrl),
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pszCanonicalized, pcchCanonicalized, dwFlags);
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return E_NOTIMPL;
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}
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/*************************************************************************
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* UrlEscapeA [SHLWAPI]
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*
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* Converts unsafe characters into their escape sequences.
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*
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* The converted string is returned in pszEscaped if the buffer size
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* (which should be supplied in pcchEscaped) is large enough, in this
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* case the function returns S_OK and pcchEscaped contains the length
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* of the escaped string. If the buffer is not large enough the
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* function returns E_POINTER and pcchEscaped contains the required
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* buffer size (including room for the '\0').
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*
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* By default the function stops converting at the first '?' or
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* '#'. [MSDN says differently]. If URL_ESCAPE_SPACE_ONLY flag is set
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* then only spaces are converted, but the conversion continues past a
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* '?' or '#'.
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*
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* BUGS:
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*
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* None of the URL_ define values are documented, so they were
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* determined by trial and error. MSDN mentions URL_ESCAPE_PERCENT
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* but I can't find a value that does this under win2000.
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* URL_DONT_ESCAPE_EXTRA_INFO appears to be the default which is what
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* we assume here. URL_ESCAPE_SEGMENT_ONLY is not implemented
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* (value??). A value of 0x2000 for dwFlags seems to escape
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* '/'s too - this is neither documented on MSDN nor implemented here.
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* For character values that are converted see URL_NeedEscape.
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*/
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HRESULT WINAPI UrlEscapeA(
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LPCSTR pszUrl,
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LPSTR pszEscaped,
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LPDWORD pcchEscaped,
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DWORD dwFlags)
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{
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LPCSTR src;
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DWORD needed = 0, ret;
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BOOL stop_escapping = FALSE;
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char next[3], *dst = pszEscaped;
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char hex[] = "0123456789ABCDEF";
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INT len;
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TRACE("(%s %p %p 0x%08lx)\n", debugstr_a(pszUrl), pszEscaped,
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pcchEscaped, dwFlags);
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if(dwFlags & ~URL_ESCAPE_SPACES_ONLY)
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FIXME("Unimplemented flags: %08lx\n", dwFlags);
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for(src = pszUrl; *src; src++) {
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if(!(dwFlags & URL_ESCAPE_SPACES_ONLY) &&
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(*src == '#' || *src == '?'))
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stop_escapping = TRUE;
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if(URL_NeedEscape(*src, dwFlags) && stop_escapping == FALSE) {
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next[0] = '%';
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next[1] = hex[(*src >> 4) & 0xf];
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next[2] = hex[*src & 0xf];
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len = 3;
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} else {
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next[0] = *src;
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len = 1;
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}
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if(needed + len <= *pcchEscaped) {
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memcpy(dst, next, len);
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dst += len;
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}
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needed += len;
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}
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if(needed < *pcchEscaped) {
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*dst = '\0';
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ret = S_OK;
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} else {
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needed++; /* add one for the '\0' */
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ret = E_POINTER;
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}
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*pcchEscaped = needed;
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return ret;
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}
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/*************************************************************************
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* UrlEscapeW [SHLWAPI]
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*/
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HRESULT WINAPI UrlEscapeW(
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LPCWSTR pszUrl,
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LPWSTR pszEscaped,
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LPDWORD pcchEscaped,
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DWORD dwFlags)
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{
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FIXME("(%s %p %p 0x%08lx): stub\n",debugstr_w(pszUrl),
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pszEscaped, pcchEscaped, dwFlags);
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return E_NOTIMPL;
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}
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/*************************************************************************
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* UrlUnescapeA [SHLWAPI]
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*
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* Converts escape sequences back to ordinary characters.
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*
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* If URL_ESCAPE_INPLACE is set in dwFlags then pszUnescaped and
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* pcchUnescaped are ignored and the converted string is returned in
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* pszUrl, otherwise the string is returned in pszUnescaped.
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* pcchUnescaped should contain the size of pszUnescaped on calling
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* and will contain the length the the returned string on return if
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* the buffer is big enough else it will contain the buffer size
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* required (including room for the '\0'). The function returns S_OK
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* on success or E_POINTER if the buffer is not large enough. If the
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* URL_DONT_ESCAPE_EXTRA_INFO flag is set then the conversion stops at
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* the first occurrence of either '?' or '#'.
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*
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*/
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HRESULT WINAPI UrlUnescapeA(
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LPCSTR pszUrl,
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LPSTR pszUnescaped,
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LPDWORD pcchUnescaped,
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DWORD dwFlags)
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{
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char *dst, next;
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LPCSTR src;
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HRESULT ret;
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DWORD needed;
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BOOL stop_unescapping = FALSE;
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TRACE("(%s, %p, %p, %08lx): stub\n", debugstr_a(pszUrl), pszUnescaped,
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pcchUnescaped, dwFlags);
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if(dwFlags & URL_UNESCAPE_INPLACE)
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dst = (char*)pszUrl;
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else
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dst = pszUnescaped;
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for(src = pszUrl, needed = 0; *src; src++, needed++) {
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if(dwFlags & URL_DONT_UNESCAPE_EXTRA_INFO &&
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(*src == '#' || *src == '?')) {
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stop_unescapping = TRUE;
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next = *src;
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} else if(*src == '%' && isxdigit(*(src + 1)) && isxdigit(*(src + 2))
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&& stop_unescapping == FALSE) {
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INT ih;
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char buf[3];
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memcpy(buf, src + 1, 2);
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buf[2] = '\0';
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ih = strtol(buf, NULL, 16);
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next = (CHAR) ih;
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src += 2; /* Advance to end of escape */
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} else
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next = *src;
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if(dwFlags & URL_UNESCAPE_INPLACE || needed < *pcchUnescaped)
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*dst++ = next;
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}
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if(dwFlags & URL_UNESCAPE_INPLACE || needed < *pcchUnescaped) {
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*dst = '\0';
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ret = S_OK;
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} else {
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needed++; /* add one for the '\0' */
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ret = E_POINTER;
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}
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if(!(dwFlags & URL_UNESCAPE_INPLACE))
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*pcchUnescaped = needed;
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return ret;
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}
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/*************************************************************************
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* UrlUnescapeW [SHLWAPI]
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*/
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HRESULT WINAPI UrlUnescapeW(
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LPCWSTR pszUrl,
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LPWSTR pszUnescaped,
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LPDWORD pcchUnescaped,
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DWORD dwFlags)
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{
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FIXME("(%s, %p, %p, %08lx): stub\n", debugstr_w(pszUrl), pszUnescaped,
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pcchUnescaped, dwFlags);
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return E_NOTIMPL;
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}
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