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winhttp: Introduce a structure to describe URL components. 

Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hans Leidekker 2019-02-20 09:58:20 +01:00 committed by Alexandre Julliard
parent 18e17e8d36
commit 816d944c8f
1 changed files with 70 additions and 42 deletions
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112
dlls/winhttp/url.c
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@ -34,27 +34,33 @@ WINE_DEFAULT_DEBUG_CHANNEL(winhttp);
static const WCHAR scheme_http[] = {'h','t','t','p',0}; static const WCHAR scheme_http[] = {'h','t','t','p',0};
static const WCHAR scheme_https[] = {'h','t','t','p','s',0}; static const WCHAR scheme_https[] = {'h','t','t','p','s',0};
static DWORD set_component( WCHAR **str, DWORD *str_len, WCHAR *value, DWORD len, DWORD flags, BOOL *overflow ) struct url_component
{ {
if (*str && !*str_len) return ERROR_INVALID_PARAMETER; WCHAR **str;
if (!*str_len) return ERROR_SUCCESS; DWORD *len;
if (!*str) };
static DWORD set_component( struct url_component *comp, WCHAR *value, DWORD len, DWORD flags, BOOL *overflow )
{ {
if (len && *str_len && (flags & (ICU_DECODE|ICU_ESCAPE))) return ERROR_INVALID_PARAMETER; if (*comp->str && !*comp->len) return ERROR_INVALID_PARAMETER;
*str = value; if (!*comp->len) return ERROR_SUCCESS;
*str_len = len; if (!*comp->str)
{
if (len && *comp->len && (flags & (ICU_DECODE|ICU_ESCAPE))) return ERROR_INVALID_PARAMETER;
*comp->str = value;
*comp->len = len;
} }
else else
{ {
if (len >= *str_len) if (len >= *comp->len)
{ {
*str_len = len+1; *comp->len = len + 1;
*overflow = TRUE; *overflow = TRUE;
return ERROR_SUCCESS; return ERROR_SUCCESS;
} }
memcpy( *str, value, len * sizeof(WCHAR) ); memcpy( *comp->str, value, len * sizeof(WCHAR) );
(*str)[len] = 0; (*comp->str)[len] = 0;
*str_len = len; *comp->len = len;
} }
return ERROR_SUCCESS; return ERROR_SUCCESS;
} }
@ -173,7 +179,8 @@ static DWORD parse_port( const WCHAR *str, DWORD len, INTERNET_PORT *ret )
BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONENTSW uc ) BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONENTSW uc )
{ {
WCHAR *p, *q, *r, *url_decoded = NULL, *url_escaped = NULL; WCHAR *p, *q, *r, *url_decoded = NULL, *url_escaped = NULL;
INTERNET_SCHEME scheme = 0; INTERNET_SCHEME scheme_number = 0;
struct url_component scheme, username, password, hostname, path, extra;
BOOL overflow = FALSE; BOOL overflow = FALSE;
DWORD err; DWORD err;
@ -209,15 +216,18 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
SetLastError( ERROR_WINHTTP_UNRECOGNIZED_SCHEME ); SetLastError( ERROR_WINHTTP_UNRECOGNIZED_SCHEME );
return FALSE; return FALSE;
} }
if (p - url == 4 && !strncmpiW( url, scheme_http, 4 )) scheme = INTERNET_SCHEME_HTTP; if (p - url == 4 && !strncmpiW( url, scheme_http, 4 )) scheme_number = INTERNET_SCHEME_HTTP;
else if (p - url == 5 && !strncmpiW( url, scheme_https, 5 )) scheme = INTERNET_SCHEME_HTTPS; else if (p - url == 5 && !strncmpiW( url, scheme_https, 5 )) scheme_number = INTERNET_SCHEME_HTTPS;
else else
{ {
err = ERROR_WINHTTP_UNRECOGNIZED_SCHEME; err = ERROR_WINHTTP_UNRECOGNIZED_SCHEME;
goto exit; goto exit;
} }
if ((err = set_component( &uc->lpszScheme, &uc->dwSchemeLength, (WCHAR *)url, p - url, flags, &overflow ))) goto exit; scheme.str = &uc->lpszScheme;
scheme.len = &uc->dwSchemeLength;
if ((err = set_component( &scheme, (WCHAR *)url, p - url, flags, &overflow ))) goto exit;
p++; /* skip ':' */ p++; /* skip ':' */
if (!p[0] || p[0] != '/' || p[1] != '/') if (!p[0] || p[0] != '/' || p[1] != '/')
@ -231,83 +241,101 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
err = ERROR_WINHTTP_INVALID_URL; err = ERROR_WINHTTP_INVALID_URL;
goto exit; goto exit;
} }
username.str = &uc->lpszUserName;
username.len = &uc->dwUserNameLength;
password.str = &uc->lpszPassword;
password.len = &uc->dwPasswordLength;
if ((q = memchrW( p, '@', len - (p - url) )) && !(memchrW( p, '/', q - p ))) if ((q = memchrW( p, '@', len - (p - url) )) && !(memchrW( p, '/', q - p )))
{ {
if ((r = memchrW( p, ':', q - p ))) if ((r = memchrW( p, ':', q - p )))
{ {
if ((err = set_component( &uc->lpszUserName, &uc->dwUserNameLength, p, r - p, flags, &overflow ))) goto exit; if ((err = set_component( &username, p, r - p, flags, &overflow ))) goto exit;
r++; r++;
if ((err = set_component( &uc->lpszPassword, &uc->dwPasswordLength, r, q - r, flags, &overflow ))) goto exit; if ((err = set_component( &password, r, q - r, flags, &overflow ))) goto exit;
} }
else else
{ {
if ((err = set_component( &uc->lpszUserName, &uc->dwUserNameLength, p, q - p, flags, &overflow ))) goto exit; if ((err = set_component( &username, p, q - p, flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszPassword, &uc->dwPasswordLength, NULL, 0, flags, &overflow ))) goto exit; if ((err = set_component( &password, NULL, 0, flags, &overflow ))) goto exit;
} }
p = q + 1; p = q + 1;
} }
else else
{ {
if ((err = set_component( &uc->lpszUserName, &uc->dwUserNameLength, NULL, 0, flags, &overflow ))) goto exit; if ((err = set_component( &username, NULL, 0, flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszPassword, &uc->dwPasswordLength, NULL, 0, flags, &overflow ))) goto exit; if ((err = set_component( &password, NULL, 0, flags, &overflow ))) goto exit;
} }
hostname.str = &uc->lpszHostName;
hostname.len = &uc->dwHostNameLength;
path.str = &uc->lpszUrlPath;
path.len = &uc->dwUrlPathLength;
extra.str = &uc->lpszExtraInfo;
extra.len = &uc->dwExtraInfoLength;
if ((q = memchrW( p, '/', len - (p - url) ))) if ((q = memchrW( p, '/', len - (p - url) )))
{ {
if ((r = memchrW( p, ':', q - p ))) if ((r = memchrW( p, ':', q - p )))
{ {
if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, r - p, flags, &overflow ))) goto exit; if ((err = set_component( &hostname, p, r - p, flags, &overflow ))) goto exit;
r++; r++;
if ((err = parse_port( r, q - r, &uc->nPort ))) goto exit; if ((err = parse_port( r, q - r, &uc->nPort ))) goto exit;
} }
else else
{ {
if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, q - p, flags, &overflow ))) goto exit; if ((err = set_component( &hostname, p, q - p, flags, &overflow ))) goto exit;
if (scheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT; if (scheme_number == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
if (scheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT; if (scheme_number == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
} }
if ((r = memchrW( q, '?', len - (q - url) ))) if ((r = memchrW( q, '?', len - (q - url) )))
{ {
if (uc->dwExtraInfoLength) if (*extra.len)
{ {
if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, q, r - q, flags, &overflow ))) goto exit; if ((err = set_component( &path, q, r - q, flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, r, len - (r - url), flags, &overflow ))) goto exit; if ((err = set_component( &extra, r, len - (r - url), flags, &overflow ))) goto exit;
} }
else if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, q, len - (q - url), flags, &overflow ))) goto exit; else if ((err = set_component( &path, q, len - (q - url), flags, &overflow ))) goto exit;
} }
else else
{ {
if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, q, len - (q - url), flags, &overflow ))) goto exit; if ((err = set_component( &path, q, len - (q - url), flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit; if ((err = set_component( &extra, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit;
} }
} }
else else
{ {
if ((r = memchrW( p, ':', len - (p - url) ))) if ((r = memchrW( p, ':', len - (p - url) )))
{ {
if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, r - p, flags, &overflow ))) goto exit; if ((err = set_component( &hostname, p, r - p, flags, &overflow ))) goto exit;
r++; r++;
if ((err = parse_port( r, len - (r - url), &uc->nPort ))) goto exit; if ((err = parse_port( r, len - (r - url), &uc->nPort ))) goto exit;
} }
else else
{ {
if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, len - (p - url), flags, &overflow ))) goto exit; if ((err = set_component( &hostname, p, len - (p - url), flags, &overflow ))) goto exit;
if (scheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT; if (scheme_number == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
if (scheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT; if (scheme_number == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
} }
if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit; if ((err = set_component( &path, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit; if ((err = set_component( &extra, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit;
} }
TRACE("scheme(%s) host(%s) port(%d) path(%s) extra(%s)\n", debugstr_wn( uc->lpszScheme, uc->dwSchemeLength ), TRACE("scheme(%s) host(%s) port(%d) path(%s) extra(%s)\n", debugstr_wn(*scheme.str, *scheme.len),
debugstr_wn( uc->lpszHostName, uc->dwHostNameLength ), uc->nPort, debugstr_wn( uc->lpszUrlPath, uc->dwUrlPathLength ), debugstr_wn(*hostname.str, *hostname.len ), uc->nPort, debugstr_wn(*path.str, *path.len),
debugstr_wn( uc->lpszExtraInfo, uc->dwExtraInfoLength )); debugstr_wn(*extra.str, *extra.len));
exit: exit:
if (!err) if (!err)
{ {
if (overflow) err = ERROR_INSUFFICIENT_BUFFER; if (overflow) err = ERROR_INSUFFICIENT_BUFFER;
uc->nScheme = scheme; uc->nScheme = scheme_number;
} }
heap_free( url_decoded ); heap_free( url_decoded );
heap_free( url_escaped ); heap_free( url_escaped );