/** @file * IPRT - C++ Representational State Transfer (REST) Client Classes. */ /* * Copyright (C) 2008-2019 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_cpp_restclient_h #define IPRT_INCLUDED_cpp_restclient_h #ifndef RT_WITHOUT_PRAGMA_ONCE # pragma once #endif #include #include #include /** @defgroup grp_rt_cpp_restclient C++ Representational State Transfer (REST) Client Classes. * @ingroup grp_rt_cpp * @{ */ /** * Specialization of RTCRestBinary for use with body parameters in a client. * * This enables registering data callbacks for provinding data to upload. */ class RT_DECL_CLASS RTCRestBinaryParameter : public RTCRestBinary { public: /** Default constructor. */ RTCRestBinaryParameter() RT_NOEXCEPT; /** Safe copy assignment method. */ virtual int assignCopy(RTCRestBinaryParameter const &a_rThat) RT_NOEXCEPT; /** Safe copy assignment method. * @note Resets callbacks and ASSUMES that @a a_cbData is the content length. */ virtual int assignCopy(RTCRestBinary const &a_rThat) RT_NOEXCEPT RT_OVERRIDE; /** Safe copy assignment method. * @note Resets callbacks and ASSUMES that @a a_cbData is the content length. */ virtual int assignCopy(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT RT_OVERRIDE; /** * Use the specified data buffer directly. * @note Resets callbacks and ASSUMES that @a a_cbData is the content length. */ virtual int assignReadOnly(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT RT_OVERRIDE; /** * Use the specified data buffer directly. * @note This will assert and work like assignReadOnly. */ virtual int assignWriteable(void *a_pvBuf, size_t a_cbBuf) RT_NOEXCEPT RT_OVERRIDE; /** Make a clone of this object. */ inline RTCRestBinaryParameter *clone() const RT_NOEXCEPT { return (RTCRestBinaryParameter *)baseClone(); } /* Overridden methods: */ virtual RTCRestObjectBase *baseClone() const RT_NOEXCEPT RT_OVERRIDE; virtual int resetToDefault() RT_NOEXCEPT RT_OVERRIDE; virtual const char *typeName(void) const RT_NOEXCEPT RT_OVERRIDE; /** Factory method. */ static DECLCALLBACK(RTCRestObjectBase *) createInstance(void) RT_NOEXCEPT; /** * Retrieves the callback data. */ inline void *getCallbackData() const RT_NOEXCEPT { return m_pvCallbackData; } /** * Sets the content-type for an upload. * * @returns VINF_SUCCESS or VERR_NO_STR_MEMORY. * @param a_pszContentType The content type to set. * If NULL, no content type is set. */ int setContentType(const char *a_pszContentType) RT_NOEXCEPT; /** * Gets the content type that was set. */ inline RTCString const &getContentType() const RT_NOEXCEPT { return m_strContentType; } /** * Gets the content-length value (UINT64_MAX if not available). */ inline uint64_t getContentLength() const RT_NOEXCEPT { return m_cbContentLength; } /** * Callback for producing bytes to upload. * * @returns IPRT status code. * @param a_pThis The related string object. * @param a_pvDst Where to put the bytes. * @param a_cbDst Max number of bytes to produce. * @param a_offContent The byte offset corresponding to the start of @a a_pvDst. * @param a_pcbActual Where to return the number of bytes actually produced. * * @remarks Use getCallbackData to get the user data. * * @note The @a a_offContent parameter does not imply random access or anthing * like that, it is just a convenience provided by the caller. The value * is the sum of the previously returned @a *pcbActual values. */ typedef DECLCALLBACK(int) FNPRODUCER(RTCRestBinaryParameter *a_pThis, void *a_pvDst, size_t a_cbDst, uint64_t a_offContent, size_t *a_pcbActual) /*RT_NOEXCEPT*/; /** Pointer to a byte producer callback. */ typedef FNPRODUCER *PFNPRODUCER; /** * Sets the producer callback. * * @param a_pfnProducer The callback function for producing data. * @param a_pvCallbackData Data the can be retrieved from the callback * using getCallbackData(). * @param a_cbContentLength The amount of data that will be uploaded and * to be set as the value of the content-length * header field. Pass UINT64_MAX if not known. * * @note This will drop any buffer previously registered using setUploadData(). */ void setProducerCallback(PFNPRODUCER a_pfnProducer, void *a_pvCallbackData = NULL, uint64_t a_cbContentLength = UINT64_MAX) RT_NOEXCEPT; /** * Preprares transmission via the @a a_hHttp client instance. * * @returns IPRT status code. * @param a_hHttp The HTTP client instance. * @internal */ virtual int xmitPrepare(RTHTTP a_hHttp) const RT_NOEXCEPT; /** * For completing and/or undoing setup from xmitPrepare. * * @param a_hHttp The HTTP client instance. * @internal */ virtual void xmitComplete(RTHTTP a_hHttp) const RT_NOEXCEPT; protected: /** Number of bytes corresponding to content-length. * UINT64_MAX if not known. Used both for unploads and downloads. */ uint64_t m_cbContentLength; /** The content type if set (upload only). */ RTCString m_strContentType; /** Pointer to user-registered producer callback function (upload only). */ PFNPRODUCER m_pfnProducer; /** User argument for both callbacks (both). */ void *m_pvCallbackData; /** @copydoc FNRTHTTPUPLOADCALLBACK */ static DECLCALLBACK(int) xmitHttpCallback(RTHTTP hHttp, void *pvBuf, size_t cbBuf, uint64_t offContent, size_t *pcbActual, void *pvUser) RT_NOEXCEPT; private: /* No copy constructor or copy assignment: */ RTCRestBinaryParameter(RTCRestBinaryParameter const &a_rThat); RTCRestBinaryParameter &operator=(RTCRestBinaryParameter const &a_rThat); }; /** * Specialization of RTCRestBinary for use with responses in a client. * * This enables registering data callbacks for consuming downloaded data. */ class RT_DECL_CLASS RTCRestBinaryResponse : public RTCRestBinary { public: /** Default constructor. */ RTCRestBinaryResponse() RT_NOEXCEPT; /** Safe copy assignment method. */ virtual int assignCopy(RTCRestBinaryResponse const &a_rThat) RT_NOEXCEPT; /** Safe copy assignment method. */ virtual int assignCopy(RTCRestBinary const &a_rThat) RT_NOEXCEPT RT_OVERRIDE; /** Safe copy assignment method. * @note This will assert and fail as it makes no sense for a download. */ virtual int assignCopy(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT RT_OVERRIDE; /** * Use the specified data buffer directly. * @note This will assert and fail as it makes no sense for a download. */ virtual int assignReadOnly(void const *a_pvData, size_t a_cbData) RT_NOEXCEPT RT_OVERRIDE; /** * Use the specified data buffer directly. * @note This will drop any previously registered producer callback and user data. */ virtual int assignWriteable(void *a_pvBuf, size_t a_cbBuf) RT_NOEXCEPT RT_OVERRIDE; /** Make a clone of this object. */ inline RTCRestBinaryResponse *clone() const RT_NOEXCEPT { return (RTCRestBinaryResponse *)baseClone(); } /* Overridden methods: */ virtual RTCRestObjectBase *baseClone() const RT_NOEXCEPT RT_OVERRIDE; virtual int resetToDefault() RT_NOEXCEPT RT_OVERRIDE; virtual const char *typeName(void) const RT_NOEXCEPT RT_OVERRIDE; /** Factory method. */ static DECLCALLBACK(RTCRestObjectBase *) createInstance(void) RT_NOEXCEPT; /** * Retrieves the callback data. */ inline void *getCallbackData() const RT_NOEXCEPT { return m_pvCallbackData; } /** * Sets the max size to download to memory. * * This also indicates the intention to download to a memory buffer, so it * will drop any previously registered consumer callback and its user data. * * @param a_cbMaxDownload Maximum number of bytes to download to memory. * If 0, a default is selected (currently 32MiB for * 32-bit hosts and 128MiB for 64-bit). */ void setMaxDownloadSize(size_t a_cbMaxDownload) RT_NOEXCEPT; /** * Gets the content-length value (UINT64_MAX if not available). */ inline uint64_t getContentLength() const RT_NOEXCEPT { return m_cbContentLength; } /** * Callback for consuming downloaded bytes. * * @returns IPRT status code. * @param a_pThis The related string object. * @param a_pvSrc Buffer containing the bytes. * @param a_cbSrc The number of bytes in the buffer. * @param a_uHttpStatus The HTTP status code. * @param a_offContent The byte offset corresponding to the start of @a a_pvSrc. * @param a_cbContent The content length field value, UINT64_MAX if not available. * * @remarks Use getCallbackData to get the user data. * * @note The @a a_offContent parameter does not imply random access or anthing * like that, it is just a convenience provided by the caller. The value * is the sum of the previous @a a_cbSrc values. */ typedef DECLCALLBACK(int) FNCONSUMER(RTCRestBinaryResponse *a_pThis, const void *a_pvSrc, size_t a_cbSrc, uint32_t a_uHttpStatus, uint64_t a_offContent, uint64_t a_cbContent) /*RT_NOEXCEPT*/; /** Pointer to a byte consumer callback. */ typedef FNCONSUMER *PFNCONSUMER; /** * Sets the consumer callback. * * @param a_pfnConsumer The callback function for consuming downloaded data. * NULL if data should be stored in m_pbData (the default). * @param a_pvCallbackData Data the can be retrieved from the callback * using getCallbackData(). */ void setConsumerCallback(PFNCONSUMER a_pfnConsumer, void *a_pvCallbackData = NULL) RT_NOEXCEPT; /** * Preprares for receiving via the @a a_hHttp client instance. * * @returns IPRT status code. * @param a_hHttp The HTTP client instance. * @param a_fCallbackFlags The HTTP callback flags (status code spec). * @internal */ virtual int receivePrepare(RTHTTP a_hHttp, uint32_t a_fCallbackFlags) RT_NOEXCEPT; /** * For completing and/or undoing setup from receivePrepare. * * @param a_hHttp The HTTP client instance. * @internal */ virtual void receiveComplete(RTHTTP a_hHttp) RT_NOEXCEPT; protected: /** Number of bytes corresponding to content-length. * UINT64_MAX if not known. Used both for unploads and downloads. */ uint64_t m_cbContentLength; /** Number of bytes downloaded thus far. */ uint64_t m_cbDownloaded; /** Pointer to user-registered consumer callback function (download only). */ PFNCONSUMER m_pfnConsumer; /** User argument for both callbacks (both). */ void *m_pvCallbackData; /** Maximum data to download to memory (download only). */ size_t m_cbMaxDownload; /** @copydoc FNRTHTTPDOWNLOADCALLBACK */ static DECLCALLBACK(int) receiveHttpCallback(RTHTTP hHttp, void const *pvBuf, size_t cbBuf, uint32_t uHttpStatus, uint64_t offContent, uint64_t cbContent, void *pvUser) RT_NOEXCEPT; private: /* No copy constructor or copy assignment: */ RTCRestBinaryResponse(RTCRestBinaryResponse const &a_rThat); RTCRestBinaryResponse &operator=(RTCRestBinaryResponse const &a_rThat); }; /** * Base class for REST client requests. * * This encapsulates parameters and helps transform them into a HTTP request. * * Parameters can be transfered in a number of places: * - Path part of the URL. * - Query part of the URL. * - HTTP header fields. * - FORM body. * - JSON body. * - XML body. * - ... * * They can be require or optional. The latter may have default values. In * swagger 3 they can also be nullable, which means the null-indicator cannot * be used for tracking optional parameters. */ class RT_DECL_CLASS RTCRestClientRequestBase { public: RTCRestClientRequestBase() RT_NOEXCEPT; virtual ~RTCRestClientRequestBase(); RTCRestClientRequestBase(RTCRestClientRequestBase const &a_rThat) RT_NOEXCEPT; RTCRestClientRequestBase &operator=(RTCRestClientRequestBase const &a_rThat) RT_NOEXCEPT; /** * Reset all members to default values. * @returns IPRT status code. */ virtual int resetToDefault() RT_NOEXCEPT = 0; /** * Prepares the HTTP handle for transmitting this request. * * @returns IPRT status code. * @param a_pStrPath Where to set path parameters. Will be appended to the base path. * @param a_pStrQuery Where to set query parameters. * @param a_hHttp Where to set header parameters and such. * @param a_pStrBody Where to set body parameters. */ virtual int xmitPrepare(RTCString *a_pStrPath, RTCString *a_pStrQuery, RTHTTP a_hHttp, RTCString *a_pStrBody) const RT_NOEXCEPT = 0; /** * Always called after the request has been transmitted. * * @param a_rcStatus Negative numbers are IPRT errors, positive are HTTP status codes. * @param a_hHttp The HTTP handle the request was performed on. */ virtual void xmitComplete(int a_rcStatus, RTHTTP a_hHttp) const RT_NOEXCEPT = 0; /** * Checks if there are were any assignment errors. */ inline bool hasAssignmentErrors() const RT_NOEXCEPT { return m_fErrorSet != 0; } protected: /** Set of fields that have been explicitly assigned a value. */ uint64_t m_fIsSet; /** Set of fields where value assigning failed. */ uint64_t m_fErrorSet; /** Path parameter descriptor. */ typedef struct { const char *pszName; /**< The name string to replace (including {}). */ size_t cchName; /**< Length of pszName. */ uint32_t fFlags; /**< The toString flags. */ uint8_t iBitNo; /**< The parameter bit number. */ } PATHPARAMDESC; /** Path parameter state. */ typedef struct { RTCRestObjectBase const *pObj; /**< Pointer to the parameter object. */ size_t offName; /**< Maintained by worker. */ } PATHPARAMSTATE; /** * Do path parameters. * * @returns IPRT status code * @param a_pStrPath The destination path. * @param a_pszPathTemplate The path template string. * @param a_cchPathTemplate The length of the path template string. * @param a_paPathParams The path parameter descriptors (static). * @param a_paPathParamStates The path parameter objects and states. * @param a_cPathParams Number of path parameters. */ int doPathParameters(RTCString *a_pStrPath, const char *a_pszPathTemplate, size_t a_cchPathTemplate, PATHPARAMDESC const *a_paPathParams, PATHPARAMSTATE *a_paPathParamStates, size_t a_cPathParams) const RT_NOEXCEPT; /** Query parameter descriptor. */ typedef struct { const char *pszName; /**< The parameter name. */ uint32_t fFlags; /**< The toString flags. */ bool fRequired; /**< Required or not. */ uint8_t iBitNo; /**< The parameter bit number. */ } QUERYPARAMDESC; /** * Do query parameters. * * @returns IPRT status code * @param a_pStrQuery The destination string. * @param a_paQueryParams The query parameter descriptors. * @param a_papQueryParamObjs The query parameter objects, parallel to @a a_paQueryParams. * @param a_cQueryParams Number of query parameters. */ int doQueryParameters(RTCString *a_pStrQuery, QUERYPARAMDESC const *a_paQueryParams, RTCRestObjectBase const **a_papQueryParamObjs, size_t a_cQueryParams) const RT_NOEXCEPT; /** Header parameter descriptor. */ typedef struct { const char *pszName; /**< The parameter name. */ uint32_t fFlags; /**< The toString flags. */ bool fRequired; /**< Required or not. */ uint8_t iBitNo; /**< The parameter bit number. */ bool fMapCollection; /**< Collect headers starting with pszName into a map. */ } HEADERPARAMDESC; /** * Do header parameters. * * @returns IPRT status code * @param a_hHttp Where to set header parameters. * @param a_paHeaderParams The header parameter descriptors. * @param a_papHeaderParamObjs The header parameter objects, parallel to @a a_paHeaderParams. * @param a_cHeaderParams Number of header parameters. */ int doHeaderParameters(RTHTTP a_hHttp, HEADERPARAMDESC const *a_paHeaderParams, RTCRestObjectBase const **a_papHeaderParamObjs, size_t a_cHeaderParams) const RT_NOEXCEPT; }; /** * Base class for REST client responses. */ class RT_DECL_CLASS RTCRestClientResponseBase { public: /** Default constructor. */ RTCRestClientResponseBase() RT_NOEXCEPT; /** Destructor. */ virtual ~RTCRestClientResponseBase(); /** Copy constructor. */ RTCRestClientResponseBase(RTCRestClientResponseBase const &a_rThat); /** Copy assignment operator. */ RTCRestClientResponseBase &operator=(RTCRestClientResponseBase const &a_rThat); /** * Resets the object state. */ virtual void reset(void) RT_NOEXCEPT; /** * Prepares the HTTP handle for receiving the response. * * This may install callbacks and such like. * * When overridden, the parent class must always be called. * * @returns IPRT status code. * @param a_hHttp The HTTP handle to prepare for receiving. */ virtual int receivePrepare(RTHTTP a_hHttp) RT_NOEXCEPT; /** * Called when the HTTP request has been completely received. * * @param a_rcStatus Negative numbers are IPRT errors, positive are HTTP status codes. * @param a_hHttp The HTTP handle the request was performed on. * This can be NIL_RTHTTP should something fail early, in * which case it is possible receivePrepare() wasn't called. * * @note Called before consumeBody() but after consumeHeader(). */ virtual void receiveComplete(int a_rcStatus, RTHTTP a_hHttp) RT_NOEXCEPT; /** * Callback that consumes HTTP body data from the server. * * @param a_pchData Body data. * @param a_cbData Amount of body data. * * @note Called after consumeHeader(). */ virtual void consumeBody(const char *a_pchData, size_t a_cbData) RT_NOEXCEPT; /** * Called after status, headers and body all have been presented. * * @returns IPRT status code. */ virtual void receiveFinal() RT_NOEXCEPT; /** * Getter for m_rcStatus. * @returns Negative numbers are IPRT errors, positive are HTTP status codes. */ inline int getStatus() const RT_NOEXCEPT { return m_rcStatus; } /** * Getter for m_rcHttp. * @returns HTTP status code or VERR_NOT_AVAILABLE. */ inline int getHttpStatus() const RT_NOEXCEPT { return m_rcHttp; } /** * Getter for m_pErrInfo. */ inline PCRTERRINFO getErrInfo(void) const RT_NOEXCEPT { return m_pErrInfo; } /** * Getter for m_strContentType. */ inline RTCString const &getContentType(void) const RT_NOEXCEPT { return m_strContentType; } protected: /** Negative numbers are IPRT errors, positive are HTTP status codes. */ int m_rcStatus; /** The HTTP status code, VERR_NOT_AVAILABLE if not set. */ int m_rcHttp; /** Error information. */ PRTERRINFO m_pErrInfo; /** The value of the Content-Type header field. */ RTCString m_strContentType; PRTERRINFO getErrInfoInternal(void) RT_NOEXCEPT; void deleteErrInfo(void) RT_NOEXCEPT; void copyErrInfo(PCRTERRINFO pErrInfo) RT_NOEXCEPT; /** * Reports an error (or warning if a_rc non-negative). * * @returns a_rc * @param a_rc The status code to report and return. The first * error status is assigned to m_rcStatus, subsequent * ones as well as informational statuses are not * recorded by m_rcStatus. * @param a_pszFormat The message format string. * @param ... Message arguments. */ int addError(int a_rc, const char *a_pszFormat, ...) RT_NOEXCEPT; /** * Deserializes a header field value. * * @returns IPRT status code. * @param a_pObj The object to deserialize into. * @param a_pchValue Pointer to the value (not zero terminated). * Not necessarily valid UTF-8! * @param a_cchValue The value length. * @param a_fFlags Flags to pass to fromString(). * @param a_pszErrorTag The error tag (field name). */ int deserializeHeader(RTCRestObjectBase *a_pObj, const char *a_pchValue, size_t a_cchValue, uint32_t a_fFlags, const char *a_pszErrorTag) RT_NOEXCEPT; /** * Deserializes a header field value. * * @returns IPRT status code. * @param a_pMap The string map object to deserialize into. * @param a_pchField Pointer to the map field name. (Caller dropped the prefix.) * Not necessarily valid UTF-8! * @param a_cchField Length of field name. * @param a_pchValue Pointer to the value (not zero terminated). * Not necessarily valid UTF-8! * @param a_cchValue The value length. * @param a_fFlags Flags to pass to fromString(). * @param a_pszErrorTag The error tag (field name). */ int deserializeHeaderIntoMap(RTCRestStringMapBase *a_pMap, const char *a_pchField, size_t a_cchField, const char *a_pchValue, size_t a_cchValue, uint32_t a_fFlags, const char *a_pszErrorTag) RT_NOEXCEPT; /** * Helper that does the deserializing of the response body * via deserializeBodyFromJsonCursor(). * * @param a_pchData The body blob. * @param a_cbData The size of the body blob. * @param a_pszBodyName The name of the body parameter. */ void deserializeBody(const char *a_pchData, size_t a_cbData, const char *a_pszBodyName) RT_NOEXCEPT; /** * Called by deserializeBody to do the actual body deserialization. * * @param a_rCursor The JSON cursor. */ virtual void deserializeBodyFromJsonCursor(RTCRestJsonCursor const &a_rCursor) RT_NOEXCEPT; /** * Primary json cursor for parsing bodies. */ class PrimaryJsonCursorForBody : public RTCRestJsonPrimaryCursor { public: RTCRestClientResponseBase *m_pThat; /**< Pointer to response object. */ PrimaryJsonCursorForBody(RTJSONVAL hValue, const char *pszName, RTCRestClientResponseBase *a_pThat) RT_NOEXCEPT; virtual int addError(RTCRestJsonCursor const &a_rCursor, int a_rc, const char *a_pszFormat, ...) RT_NOEXCEPT RT_OVERRIDE; virtual int unknownField(RTCRestJsonCursor const &a_rCursor) RT_NOEXCEPT RT_OVERRIDE; }; /** * Consumes a header. * * Child classes can override this to pick up their header fields, but must * always call the parent class. * * @returns IPRT status code. * @param a_uMatchWord Match word constructed by RTHTTP_MAKE_HDR_MATCH_WORD * @param a_pchField The field name (not zero terminated). * Not necessarily valid UTF-8! * @param a_cchField The length of the field. * @param a_pchValue The field value (not zero terminated). * @param a_cchValue The length of the value. */ virtual int consumeHeader(uint32_t a_uMatchWord, const char *a_pchField, size_t a_cchField, const char *a_pchValue, size_t a_cchValue) RT_NOEXCEPT; private: /** Callback for use with RTHttpSetHeaderCallback. */ static DECLCALLBACK(int) receiveHttpHeaderCallback(RTHTTP hHttp, uint32_t uMatchWord, const char *pchField, size_t cchField, const char *pchValue, size_t cchValue, void *pvUser) RT_NOEXCEPT; }; /** * Base class for REST client responses. */ class RT_DECL_CLASS RTCRestClientApiBase { public: RTCRestClientApiBase() RT_NOEXCEPT; virtual ~RTCRestClientApiBase(); /** @name Host and Base path (URL) handling. * @{ */ /** * Gets the server URL. */ const char *getServerUrl(void) const RT_NOEXCEPT; /** * Sets the whole server URL. * @returns IPRT status code. * @param a_pszUrl The new server URL. NULL/empty to reset to default. */ int setServerUrl(const char *a_pszUrl) RT_NOEXCEPT; /** * Sets the scheme part of the the server URL. * @returns IPRT status code. * @param a_pszScheme The new scheme. Does not accept NULL or empty string. */ int setServerScheme(const char *a_pszScheme) RT_NOEXCEPT; /** * Sets the authority (hostname + port) part of the the server URL. * @returns IPRT status code. * @param a_pszAuthority The new authority. Does not accept NULL or empty string. */ int setServerAuthority(const char *a_pszAuthority) RT_NOEXCEPT; /** * Sets the base path part of the the server URL. * @returns IPRT status code. * @param a_pszBasePath The new base path. Does not accept NULL or empty string. */ int setServerBasePath(const char *a_pszBasePath) RT_NOEXCEPT; /** * Gets the default server URL as specified in the specs. * @returns Server URL. */ virtual const char *getDefaultServerUrl() const RT_NOEXCEPT = 0; /** * Gets the default server base path as specified in the specs. * @returns Host string (start of URL). */ virtual const char *getDefaultServerBasePath() const RT_NOEXCEPT = 0; /** @} */ /** Flags to doCall. */ enum { kDoCall_OciReqSignExcludeBody = 1 /**< Exclude the body when doing OCI request signing. */ }; protected: /** Handle to the HTTP connection object. */ RTHTTP m_hHttp; /** The server URL to use. If empty use the default. */ RTCString m_strServerUrl; /* Make non-copyable (RTCNonCopyable causes warnings): */ RTCRestClientApiBase(RTCRestClientApiBase const &); RTCRestClientApiBase *operator=(RTCRestClientApiBase const &); /** * Re-initializes the HTTP instance. * * @returns IPRT status code. */ virtual int reinitHttpInstance() RT_NOEXCEPT; /** * Hook that's called when doCall has fully assembled the request. * * Can be used for request signing and similar final steps. * * @returns IPRT status code. * @param a_hHttp The HTTP client instance. * @param a_rStrFullUrl The full URL. * @param a_enmHttpMethod The HTTP request method. * @param a_rStrXmitBody The body text. * @param a_fFlags kDoCall_XXX. */ virtual int xmitReady(RTHTTP a_hHttp, RTCString const &a_rStrFullUrl, RTHTTPMETHOD a_enmHttpMethod, RTCString const &a_rStrXmitBody, uint32_t a_fFlags) RT_NOEXCEPT; /** * Implements stuff for making an API call. * * @returns a_pResponse->getStatus() * @param a_rRequest Reference to the request object. * @param a_enmHttpMethod The HTTP request method. * @param a_pResponse Pointer to the response object. * @param a_pszMethod The method name, for logging purposes. * @param a_fFlags kDoCall_XXX. */ virtual int doCall(RTCRestClientRequestBase const &a_rRequest, RTHTTPMETHOD a_enmHttpMethod, RTCRestClientResponseBase *a_pResponse, const char *a_pszMethod, uint32_t a_fFlags) RT_NOEXCEPT; /** * Implements OCI style request signing. * * @returns IPRT status code. * @param a_hHttp The HTTP client instance. * @param a_rStrFullUrl The full URL. * @param a_enmHttpMethod The HTTP request method. * @param a_rStrXmitBody The body text. * @param a_fFlags kDoCall_XXX. * @param a_hKey The key to use for signing. * @param a_rStrKeyId The key ID. * * @remarks The signing scheme is covered by a series of drafts RFC, the latest being: * https://tools.ietf.org/html/draft-cavage-http-signatures-10 */ int ociSignRequest(RTHTTP a_hHttp, RTCString const &a_rStrFullUrl, RTHTTPMETHOD a_enmHttpMethod, RTCString const &a_rStrXmitBody, uint32_t a_fFlags, RTCRKEY a_hKey, RTCString const &a_rStrKeyId) RT_NOEXCEPT; /** * Worker for the server URL modifiers. * * @returns IPRT status code. * @param a_pszServerUrl The current server URL (for comparing). * @param a_offDst The offset of the component in the current server URL. * @param a_cchDst The current component length. * @param a_pszSrc The new URL component value. * @param a_cchSrc The length of the new component. */ int setServerUrlPart(const char *a_pszServerUrl, size_t a_offDst, size_t a_cchDst, const char *a_pszSrc, size_t a_cchSrc) RT_NOEXCEPT; }; /** @} */ #endif /* !IPRT_INCLUDED_cpp_restclient_h */