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Diffstat (limited to 'include/iprt/uri.h')
| -rw-r--r-- | include/iprt/uri.h | 370 |
1 files changed, 370 insertions, 0 deletions
diff --git a/include/iprt/uri.h b/include/iprt/uri.h new file mode 100644 index 00000000..77dd85e9 --- /dev/null +++ b/include/iprt/uri.h @@ -0,0 +1,370 @@ +/** @file + * IPRT - Uniform Resource Identifier handling. + */ + +/* + * Copyright (C) 2011-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + +#ifndef IPRT_INCLUDED_uri_h +#define IPRT_INCLUDED_uri_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/cdefs.h> +#include <iprt/types.h> + +RT_C_DECLS_BEGIN + +/** @defgroup grp_rt_uri RTUri - Uri parsing and creation + * + * URI parsing and creation based on RFC-3986. + * + * @remarks The whole specification isn't implemented and we only provide scheme + * specific special APIs for "file://". + * + * @ingroup grp_rt + * @{ + */ + + +/** + * Parsed URI. + * + * @remarks This structure is subject to change. + */ +typedef struct RTURIPARSED +{ + /** Magic value (for internal use only). */ + uint32_t u32Magic; + /** RTURIPARSED_F_XXX. */ + uint32_t fFlags; + + /** The length of the scheme. */ + size_t cchScheme; + + /** The offset into the string of the authority. */ + size_t offAuthority; + /** The authority length. + * @remarks The authority component can be zero length, so to check whether + * it's there or not consult RTURIPARSED_F_HAVE_AUTHORITY. */ + size_t cchAuthority; + + /** The offset into the string of the path. */ + size_t offPath; + /** The length of the path. */ + size_t cchPath; + + /** The offset into the string of the query. */ + size_t offQuery; + /** The length of the query. */ + size_t cchQuery; + + /** The offset into the string of the fragment. */ + size_t offFragment; + /** The length of the fragment. */ + size_t cchFragment; + + /** @name Authority subdivisions + * @{ */ + /** If there is a userinfo part, this is the start of it. Otherwise it's the + * same as offAuthorityHost. */ + size_t offAuthorityUsername; + /** The length of the username (zero if not present). */ + size_t cchAuthorityUsername; + /** If there is a userinfo part containing a password, this is the start of it. + * Otherwise it's the same as offAuthorityHost. */ + size_t offAuthorityPassword; + /** The length of the password (zero if not present). */ + size_t cchAuthorityPassword; + /** The offset of the host part of the authority. */ + size_t offAuthorityHost; + /** The length of the host part of the authority. */ + size_t cchAuthorityHost; + /** The authority port number, UINT32_MAX if not present or empty. */ + uint32_t uAuthorityPort; + /** @} */ +} RTURIPARSED; +/** Pointer to a parsed URI. */ +typedef RTURIPARSED *PRTURIPARSED; +/** Pointer to a const parsed URI. */ +typedef RTURIPARSED const *PCRTURIPARSED; + +/** @name RTURIPARSED_F_XXX - RTURIPARSED::fFlags + * @{ */ +/** Set if the URI contains escaped characters. */ +#define RTURIPARSED_F_CONTAINS_ESCAPED_CHARS UINT32_C(0x00000001) +/** Set if the URI has an authority component. Necessary since the authority + * component can have a zero length. */ +#define RTURIPARSED_F_HAS_AUTHORITY UINT32_C(0x00000002) +/** Set if there is a port component. */ +#define RTURIPARSED_F_HAS_PORT UINT32_C(0x00000004) +/** @} */ + +/** + * Parses a URI. + * + * @returns IPRT status code. + * @param pszUri The URI to parse. + * @param pParsed Where to return the details. This can be handed + * to the RTUriParsed* APIs for retriving + * information. + */ +RTDECL(int) RTUriParse(const char *pszUri, PRTURIPARSED pParsed); + +/** + * Extract the scheme out of a parsed URI. + * + * @returns the scheme if the URI is valid, NULL otherwise. + * @param pszUri The URI passed to RTUriParse when producing the + * info in @a pParsed. + * @param pParsed Pointer to the RTUriParse output. + */ +RTDECL(char *) RTUriParsedScheme(const char *pszUri, PCRTURIPARSED pParsed); + +/** + * Extract the authority out of a parsed URI. + * + * @returns the authority if the URI contains one, NULL otherwise. + * @param pszUri The URI passed to RTUriParse when producing the + * info in @a pParsed. + * @param pParsed Pointer to the RTUriParse output. + * @remarks The authority can have a zero length. + */ +RTDECL(char *) RTUriParsedAuthority(const char *pszUri, PCRTURIPARSED pParsed); + +/** + * Extract the username out of the authority component in a parsed URI. + * + * @returns The username if the URI contains one, otherwise NULL. + * @param pszUri The URI passed to RTUriParse when producing the + * info in @a pParsed. + * @param pParsed Pointer to the RTUriParse output. + * + * @todo This may currently be returning NULL when it maybe would be more + * appropriate to return an empty string... + */ +RTDECL(char *) RTUriParsedAuthorityUsername(const char *pszUri, PCRTURIPARSED pParsed); + +/** + * Extract the password out of the authority component in a parsed URI. + * + * @returns The password if the URI contains one, otherwise NULL. + * @param pszUri The URI passed to RTUriParse when producing the + * info in @a pParsed. + * @param pParsed Pointer to the RTUriParse output. + * + * @todo This may currently be returning NULL when it maybe would be more + * appropriate to return an empty string... + */ +RTDECL(char *) RTUriParsedAuthorityPassword(const char *pszUri, PCRTURIPARSED pParsed); + +/** + * Extract the host out of the authority component in a parsed URI. + * + * @returns The host if the URI contains one, otherwise NULL. + * @param pszUri The URI passed to RTUriParse when producing the + * info in @a pParsed. + * @param pParsed Pointer to the RTUriParse output. + * + * @todo This may currently be returning NULL when it maybe would be more + * appropriate to return an empty string... + */ +RTDECL(char *) RTUriParsedAuthorityHost(const char *pszUri, PCRTURIPARSED pParsed); + +/** + * Extract the port number out of the authority component in a parsed URI. + * + * @returns The port number if the URI contains one, otherwise UINT32_MAX. + * @param pszUri The URI passed to RTUriParse when producing the + * info in @a pParsed. + * @param pParsed Pointer to the RTUriParse output. + */ +RTDECL(uint32_t) RTUriParsedAuthorityPort(const char *pszUri, PCRTURIPARSED pParsed); + +/** + * Extract the path out of a parsed URI. + * + * @returns the path if the URI contains one, NULL otherwise. + * @param pszUri The URI passed to RTUriParse when producing the + * info in @a pParsed. + * @param pParsed Pointer to the RTUriParse output. + */ +RTDECL(char *) RTUriParsedPath(const char *pszUri, PCRTURIPARSED pParsed); + +/** + * Extract the query out of a parsed URI. + * + * @returns the query if the URI contains one, NULL otherwise. + * @param pszUri The URI passed to RTUriParse when producing the + * info in @a pParsed. + * @param pParsed Pointer to the RTUriParse output. + */ +RTDECL(char *) RTUriParsedQuery(const char *pszUri, PCRTURIPARSED pParsed); + +/** + * Extract the fragment out of a parsed URI. + * + * @returns the fragment if the URI contains one, NULL otherwise. + * @param pszUri The URI passed to RTUriParse when producing the + * info in @a pParsed. + * @param pParsed Pointer to the RTUriParse output. + */ +RTDECL(char *) RTUriParsedFragment(const char *pszUri, PCRTURIPARSED pParsed); + + + +/** + * Creates a generic URI. + * + * The returned pointer must be freed using RTStrFree(). + * + * @returns the new URI on success, NULL otherwise. + * @param pszScheme The URI scheme. + * @param pszAuthority The authority part of the URI (optional). + * @param pszPath The path part of the URI (optional). + * @param pszQuery The query part of the URI (optional). + * @param pszFragment The fragment part of the URI (optional). + */ +RTDECL(char *) RTUriCreate(const char *pszScheme, const char *pszAuthority, const char *pszPath, const char *pszQuery, + const char *pszFragment); + +/** + * Check whether the given scheme matches that of the URI. + * + * This does not validate the URI, it just compares the scheme, no more, no + * less. Thus it's much faster than using RTUriParsedScheme. + * + * @returns true if the scheme match, false if not. + * @param pszUri The URI to check. + * @param pszScheme The scheme to compare with. + */ +RTDECL(bool) RTUriIsSchemeMatch(const char *pszUri, const char *pszScheme); + +/** @defgroup grp_rt_uri_file RTUriFile - Uri file parsing and creation + * + * Implements basic "file:" scheme support to the generic RTUri interface. This + * is partly documented in RFC-1738. + * + * @{ + */ + +/** + * Creates a file URI. + * + * The returned pointer must be freed using RTStrFree(). + * + * @returns The new URI on success, NULL otherwise. Free With RTStrFree. + * @param pszPath The path to create an 'file://' URI for. This is + * assumed to be using the default path style of the + * system. + * + * @sa RTUriFileCreateEx, RTUriCreate + */ +RTDECL(char *) RTUriFileCreate(const char *pszPath); + +/** + * Creates an file URL for the given path. + * + * This API works like RTStrToUtf16Ex with regard to result allocation or + * buffering (i.e. it's a bit complicated but very flexible). + * + * @returns iprt status code. + * @param pszPath The path to convert to a file:// URL. + * @param fPathStyle The input path style, exactly one of + * RTPATH_STR_F_STYLE_HOST, RTPATH_STR_F_STYLE_DOS and + * RTPATH_STR_F_STYLE_UNIX. Must include iprt/path.h. + * @param ppszUri If cbUri is non-zero, this must either be pointing + * to pointer to a buffer of the specified size, or + * pointer to a NULL pointer. If *ppszUri is NULL or + * cbUri is zero a buffer of at least cbUri chars will + * be allocated to hold the URI. If a buffer was + * requested it must be freed using RTStrFree(). + * @param cbUri The buffer size in bytes (includes terminator). + * @param pcchUri Where to store the length of the URI string, + * excluding the terminator. (Optional) + * + * This may be set under some error conditions, + * however, only for VERR_BUFFER_OVERFLOW and + * VERR_NO_STR_MEMORY will it contain a valid string + * length that can be used to resize the buffer. + * @sa RTUriCreate, RTUriFileCreate + */ +RTDECL(int) RTUriFileCreateEx(const char *pszPath, uint32_t fPathStyle, char **ppszUri, size_t cbUri, size_t *pcchUri); + +/** + * Returns the file path encoded in the file URI. + * + * This differs a quite a bit from RTUriParsedPath in that it tries to be + * compatible with URL produced by older windows version. This API is basically + * producing the same results as the PathCreateFromUrl API on Windows. + * + * @returns The path if the URI contains one, system default path style, + * otherwise NULL. + * @param pszUri The alleged 'file://' URI to extract the path from. + * + * @sa RTUriParsedPath, RTUriFilePathEx + */ +RTDECL(char *) RTUriFilePath(const char *pszUri); + +/** + * Queries the file path for the given file URI. + * + * This API works like RTStrToUtf16Ex with regard to result allocation or + * buffering (i.e. it's a bit complicated but very flexible). + * + * This differs a quite a bit from RTUriParsedPath in that it tries to be + * compatible with URL produced by older windows version. This API is basically + * producing the same results as the PathCreateFromUrl API on Windows. + * + * @returns IPRT status code. + * @retval VERR_URI_NOT_FILE_SCHEME if not file scheme. + * + * @param pszUri The alleged file:// URI to extract the path from. + * @param fPathStyle The output path style, exactly one of + * RTPATH_STR_F_STYLE_HOST, RTPATH_STR_F_STYLE_DOS and + * RTPATH_STR_F_STYLE_UNIX. Must include iprt/path.h. + * @param ppszPath If cbPath is non-zero, this must either be pointing + * to pointer to a buffer of the specified size, or + * pointer to a NULL pointer. If *ppszPath is NULL or + * cbPath is zero a buffer of at least cbPath chars + * will be allocated to hold the path. If a buffer was + * requested it must be freed using RTStrFree(). + * @param cbPath The buffer size in bytes (includes terminator). + * @param pcchPath Where to store the length of the path string, + * excluding the terminator. (Optional) + * + * This may be set under some error conditions, + * however, only for VERR_BUFFER_OVERFLOW and + * VERR_NO_STR_MEMORY will it contain a valid string + * length that can be used to resize the buffer. + * @sa RTUriParsedPath, RTUriFilePath + */ +RTDECL(int) RTUriFilePathEx(const char *pszUri, uint32_t fPathStyle, char **ppszPath, size_t cbPath, size_t *pcchPath); + +/** @} */ + +/** @} */ + +RT_C_DECLS_END + +#endif /* !IPRT_INCLUDED_uri_h */ + |