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Diffstat (limited to 'lib/linux/include/steam/isteamhttp.h')
| -rw-r--r-- | lib/linux/include/steam/isteamhttp.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/lib/linux/include/steam/isteamhttp.h b/lib/linux/include/steam/isteamhttp.h new file mode 100644 index 0000000..8fab537 --- /dev/null +++ b/lib/linux/include/steam/isteamhttp.h @@ -0,0 +1,210 @@ +//====== Copyright © 1996-2009, Valve Corporation, All rights reserved. ======= +// +// Purpose: interface to http client +// +//============================================================================= + +#ifndef ISTEAMHTTP_H +#define ISTEAMHTTP_H +#ifdef _WIN32 +#pragma once +#endif + +#include "isteamclient.h" +#include "steamhttpenums.h" + +// Handle to a HTTP Request handle +typedef uint32 HTTPRequestHandle; +#define INVALID_HTTPREQUEST_HANDLE 0 + +typedef uint32 HTTPCookieContainerHandle; +#define INVALID_HTTPCOOKIE_HANDLE 0 + +//----------------------------------------------------------------------------- +// Purpose: interface to http client +//----------------------------------------------------------------------------- +class ISteamHTTP +{ +public: + + // Initializes a new HTTP request, returning a handle to use in further operations on it. Requires + // the method (GET or POST) and the absolute URL for the request. Both http and https are supported, + // so this string must start with http:// or https:// and should look like http://store.steampowered.com/app/250/ + // or such. + virtual HTTPRequestHandle CreateHTTPRequest( EHTTPMethod eHTTPRequestMethod, const char *pchAbsoluteURL ) = 0; + + // Set a context value for the request, which will be returned in the HTTPRequestCompleted_t callback after + // sending the request. This is just so the caller can easily keep track of which callbacks go with which request data. + virtual bool SetHTTPRequestContextValue( HTTPRequestHandle hRequest, uint64 ulContextValue ) = 0; + + // Set a timeout in seconds for the HTTP request, must be called prior to sending the request. Default + // timeout is 60 seconds if you don't call this. Returns false if the handle is invalid, or the request + // has already been sent. + virtual bool SetHTTPRequestNetworkActivityTimeout( HTTPRequestHandle hRequest, uint32 unTimeoutSeconds ) = 0; + + // Set a request header value for the request, must be called prior to sending the request. Will + // return false if the handle is invalid or the request is already sent. + virtual bool SetHTTPRequestHeaderValue( HTTPRequestHandle hRequest, const char *pchHeaderName, const char *pchHeaderValue ) = 0; + + // Set a GET or POST parameter value on the request, which is set will depend on the EHTTPMethod specified + // when creating the request. Must be called prior to sending the request. Will return false if the + // handle is invalid or the request is already sent. + virtual bool SetHTTPRequestGetOrPostParameter( HTTPRequestHandle hRequest, const char *pchParamName, const char *pchParamValue ) = 0; + + // Sends the HTTP request, will return false on a bad handle, otherwise use SteamCallHandle to wait on + // asynchronous response via callback. + // + // Note: If the user is in offline mode in Steam, then this will add a only-if-cached cache-control + // header and only do a local cache lookup rather than sending any actual remote request. + virtual bool SendHTTPRequest( HTTPRequestHandle hRequest, SteamAPICall_t *pCallHandle ) = 0; + + // Sends the HTTP request, will return false on a bad handle, otherwise use SteamCallHandle to wait on + // asynchronous response via callback for completion, and listen for HTTPRequestHeadersReceived_t and + // HTTPRequestDataReceived_t callbacks while streaming. + virtual bool SendHTTPRequestAndStreamResponse( HTTPRequestHandle hRequest, SteamAPICall_t *pCallHandle ) = 0; + + // Defers a request you have sent, the actual HTTP client code may have many requests queued, and this will move + // the specified request to the tail of the queue. Returns false on invalid handle, or if the request is not yet sent. + virtual bool DeferHTTPRequest( HTTPRequestHandle hRequest ) = 0; + + // Prioritizes a request you have sent, the actual HTTP client code may have many requests queued, and this will move + // the specified request to the head of the queue. Returns false on invalid handle, or if the request is not yet sent. + virtual bool PrioritizeHTTPRequest( HTTPRequestHandle hRequest ) = 0; + + // Checks if a response header is present in a HTTP response given a handle from HTTPRequestCompleted_t, also + // returns the size of the header value if present so the caller and allocate a correctly sized buffer for + // GetHTTPResponseHeaderValue. + virtual bool GetHTTPResponseHeaderSize( HTTPRequestHandle hRequest, const char *pchHeaderName, uint32 *unResponseHeaderSize ) = 0; + + // Gets header values from a HTTP response given a handle from HTTPRequestCompleted_t, will return false if the + // header is not present or if your buffer is too small to contain it's value. You should first call + // BGetHTTPResponseHeaderSize to check for the presence of the header and to find out the size buffer needed. + virtual bool GetHTTPResponseHeaderValue( HTTPRequestHandle hRequest, const char *pchHeaderName, uint8 *pHeaderValueBuffer, uint32 unBufferSize ) = 0; + + // Gets the size of the body data from a HTTP response given a handle from HTTPRequestCompleted_t, will return false if the + // handle is invalid. + virtual bool GetHTTPResponseBodySize( HTTPRequestHandle hRequest, uint32 *unBodySize ) = 0; + + // Gets the body data from a HTTP response given a handle from HTTPRequestCompleted_t, will return false if the + // handle is invalid or is to a streaming response, or if the provided buffer is not the correct size. Use BGetHTTPResponseBodySize first to find out + // the correct buffer size to use. + virtual bool GetHTTPResponseBodyData( HTTPRequestHandle hRequest, uint8 *pBodyDataBuffer, uint32 unBufferSize ) = 0; + + // Gets the body data from a streaming HTTP response given a handle from HTTPRequestDataReceived_t. Will return false if the + // handle is invalid or is to a non-streaming response (meaning it wasn't sent with SendHTTPRequestAndStreamResponse), or if the buffer size and offset + // do not match the size and offset sent in HTTPRequestDataReceived_t. + virtual bool GetHTTPStreamingResponseBodyData( HTTPRequestHandle hRequest, uint32 cOffset, uint8 *pBodyDataBuffer, uint32 unBufferSize ) = 0; + + // Releases an HTTP response handle, should always be called to free resources after receiving a HTTPRequestCompleted_t + // callback and finishing using the response. + virtual bool ReleaseHTTPRequest( HTTPRequestHandle hRequest ) = 0; + + // Gets progress on downloading the body for the request. This will be zero unless a response header has already been + // received which included a content-length field. For responses that contain no content-length it will report + // zero for the duration of the request as the size is unknown until the connection closes. + virtual bool GetHTTPDownloadProgressPct( HTTPRequestHandle hRequest, float *pflPercentOut ) = 0; + + // Sets the body for an HTTP Post request. Will fail and return false on a GET request, and will fail if POST params + // have already been set for the request. Setting this raw body makes it the only contents for the post, the pchContentType + // parameter will set the content-type header for the request so the server may know how to interpret the body. + virtual bool SetHTTPRequestRawPostBody( HTTPRequestHandle hRequest, const char *pchContentType, uint8 *pubBody, uint32 unBodyLen ) = 0; + + // Creates a cookie container handle which you must later free with ReleaseCookieContainer(). If bAllowResponsesToModify=true + // than any response to your requests using this cookie container may add new cookies which may be transmitted with + // future requests. If bAllowResponsesToModify=false than only cookies you explicitly set will be sent. This API is just for + // during process lifetime, after steam restarts no cookies are persisted and you have no way to access the cookie container across + // repeat executions of your process. + virtual HTTPCookieContainerHandle CreateCookieContainer( bool bAllowResponsesToModify ) = 0; + + // Release a cookie container you are finished using, freeing it's memory + virtual bool ReleaseCookieContainer( HTTPCookieContainerHandle hCookieContainer ) = 0; + + // Adds a cookie to the specified cookie container that will be used with future requests. + virtual bool SetCookie( HTTPCookieContainerHandle hCookieContainer, const char *pchHost, const char *pchUrl, const char *pchCookie ) = 0; + + // Set the cookie container to use for a HTTP request + virtual bool SetHTTPRequestCookieContainer( HTTPRequestHandle hRequest, HTTPCookieContainerHandle hCookieContainer ) = 0; + + // Set the extra user agent info for a request, this doesn't clobber the normal user agent, it just adds the extra info on the end + virtual bool SetHTTPRequestUserAgentInfo( HTTPRequestHandle hRequest, const char *pchUserAgentInfo ) = 0; + + // Set that https request should require verified SSL certificate via machines certificate trust store + virtual bool SetHTTPRequestRequiresVerifiedCertificate( HTTPRequestHandle hRequest, bool bRequireVerifiedCertificate ) = 0; + + // Set an absolute timeout on the HTTP request, this is just a total time timeout different than the network activity timeout + // which can bump everytime we get more data + virtual bool SetHTTPRequestAbsoluteTimeoutMS( HTTPRequestHandle hRequest, uint32 unMilliseconds ) = 0; + + // Check if the reason the request failed was because we timed it out (rather than some harder failure) + virtual bool GetHTTPRequestWasTimedOut( HTTPRequestHandle hRequest, bool *pbWasTimedOut ) = 0; +}; + +#define STEAMHTTP_INTERFACE_VERSION "STEAMHTTP_INTERFACE_VERSION002" + +// callbacks +#if defined( VALVE_CALLBACK_PACK_SMALL ) +#pragma pack( push, 4 ) +#elif defined( VALVE_CALLBACK_PACK_LARGE ) +#pragma pack( push, 8 ) +#else +#error isteamclient.h must be included +#endif + +struct HTTPRequestCompleted_t +{ + enum { k_iCallback = k_iClientHTTPCallbacks + 1 }; + + // Handle value for the request that has completed. + HTTPRequestHandle m_hRequest; + + // Context value that the user defined on the request that this callback is associated with, 0 if + // no context value was set. + uint64 m_ulContextValue; + + // This will be true if we actually got any sort of response from the server (even an error). + // It will be false if we failed due to an internal error or client side network failure. + bool m_bRequestSuccessful; + + // Will be the HTTP status code value returned by the server, k_EHTTPStatusCode200OK is the normal + // OK response, if you get something else you probably need to treat it as a failure. + EHTTPStatusCode m_eStatusCode; + + uint32 m_unBodySize; // Same as GetHTTPResponseBodySize() +}; + + +struct HTTPRequestHeadersReceived_t +{ + enum { k_iCallback = k_iClientHTTPCallbacks + 2 }; + + // Handle value for the request that has received headers. + HTTPRequestHandle m_hRequest; + + // Context value that the user defined on the request that this callback is associated with, 0 if + // no context value was set. + uint64 m_ulContextValue; +}; + +struct HTTPRequestDataReceived_t +{ + enum { k_iCallback = k_iClientHTTPCallbacks + 3 }; + + // Handle value for the request that has received data. + HTTPRequestHandle m_hRequest; + + // Context value that the user defined on the request that this callback is associated with, 0 if + // no context value was set. + uint64 m_ulContextValue; + + + // Offset to provide to GetHTTPStreamingResponseBodyData to get this chunk of data + uint32 m_cOffset; + + // Size to provide to GetHTTPStreamingResponseBodyData to get this chunk of data + uint32 m_cBytesReceived; +}; + + +#pragma pack( pop ) + +#endif // ISTEAMHTTP_H
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