wininet.h

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//

typedef struct {
    DWORD dwMajorVersion;
    DWORD dwMinorVersion;
} INTERNET_VERSION_INFO, * LPINTERNET_VERSION_INFO;

//
// HTTP_VERSION_INFO - query or set global HTTP version (1.0 or 1.1)
//

typedef struct {
    DWORD dwMajorVersion;
    DWORD dwMinorVersion;
} HTTP_VERSION_INFO, * LPHTTP_VERSION_INFO;

//
// INTERNET_CONNECTED_INFO - information used to set the global connected state
//

typedef struct {

    //
    // dwConnectedState - new connected/disconnected state.
    // See INTERNET_STATE_CONNECTED, etc.
    //

    DWORD dwConnectedState;

    //
    // dwFlags - flags controlling connected->disconnected (or disconnected->
    // connected) transition. See below
    //

    DWORD dwFlags;
} INTERNET_CONNECTED_INFO, * LPINTERNET_CONNECTED_INFO;


//
// flags for INTERNET_CONNECTED_INFO dwFlags
//

//
// ISO_FORCE_DISCONNECTED - if set when putting Wininet into disconnected mode,
// all outstanding requests will be aborted with a cancelled error
//

#define ISO_FORCE_DISCONNECTED  0x00000001


//
// URL_COMPONENTS - the constituent parts of an URL. Used in InternetCrackUrl()
// and InternetCreateUrl()
//
// For InternetCrackUrl(), if a pointer field and its corresponding length field
// are both 0 then that component is not returned. If the pointer field is NULL
// but the length field is not zero, then both the pointer and length fields are
// returned if both pointer and corresponding length fields are non-zero then
// the pointer field points to a buffer where the component is copied. The
// component may be un-escaped, depending on dwFlags
//
// For InternetCreateUrl(), the pointer fields should be NULL if the component
// is not required. If the corresponding length field is zero then the pointer
// field is the address of a zero-terminated string. If the length field is not
// zero then it is the string length of the corresponding pointer field
//

#pragma warning( disable : 4121 )   // disable alignment warning

typedef struct {
    DWORD   dwStructSize;       // size of this structure. Used in version check
    LPSTR   lpszScheme;         // pointer to scheme name
    DWORD   dwSchemeLength;     // length of scheme name
    INTERNET_SCHEME nScheme;    // enumerated scheme type (if known)
    LPSTR   lpszHostName;       // pointer to host name
    DWORD   dwHostNameLength;   // length of host name
    INTERNET_PORT nPort;        // converted port number
    LPSTR   lpszUserName;       // pointer to user name
    DWORD   dwUserNameLength;   // length of user name
    LPSTR   lpszPassword;       // pointer to password
    DWORD   dwPasswordLength;   // length of password
    LPSTR   lpszUrlPath;        // pointer to URL-path
    DWORD   dwUrlPathLength;    // length of URL-path
    LPSTR   lpszExtraInfo;      // pointer to extra information (e.g. ?foo or #foo)
    DWORD   dwExtraInfoLength;  // length of extra information
} URL_COMPONENTSA, * LPURL_COMPONENTSA;
typedef struct {
    DWORD   dwStructSize;       // size of this structure. Used in version check
    LPWSTR  lpszScheme;         // pointer to scheme name
    DWORD   dwSchemeLength;     // length of scheme name
    INTERNET_SCHEME nScheme;    // enumerated scheme type (if known)
    LPWSTR  lpszHostName;       // pointer to host name
    DWORD   dwHostNameLength;   // length of host name
    INTERNET_PORT nPort;        // converted port number
    LPWSTR  lpszUserName;       // pointer to user name
    DWORD   dwUserNameLength;   // length of user name
    LPWSTR  lpszPassword;       // pointer to password
    DWORD   dwPasswordLength;   // length of password
    LPWSTR  lpszUrlPath;        // pointer to URL-path
    DWORD   dwUrlPathLength;    // length of URL-path
    LPWSTR  lpszExtraInfo;      // pointer to extra information (e.g. ?foo or #foo)
    DWORD   dwExtraInfoLength;  // length of extra information
} URL_COMPONENTSW, * LPURL_COMPONENTSW;
#ifdef UNICODE
typedef URL_COMPONENTSW URL_COMPONENTS;
typedef LPURL_COMPONENTSW LPURL_COMPONENTS;
#else
typedef URL_COMPONENTSA URL_COMPONENTS;
typedef LPURL_COMPONENTSA LPURL_COMPONENTS;
#endif // UNICODE

#pragma warning( default : 4121 )   // restore alignment warning

//
// INTERNET_CERTIFICATE_INFO lpBuffer - contains the certificate returned from
// the server
//

typedef struct {

    //
    // ftExpiry - date the certificate expires.
    //

    FILETIME ftExpiry;

    //
    // ftStart - date the certificate becomes valid.
    //

    FILETIME ftStart;

    //
    // lpszSubjectInfo - the name of organization, site, and server
    //   the cert. was issued for.
    //

    LPTSTR lpszSubjectInfo;

    //
    // lpszIssuerInfo - the name of orgainzation, site, and server
    //   the cert was issues by.
    //

    LPTSTR lpszIssuerInfo;

    //
    // lpszProtocolName - the name of the protocol used to provide the secure
    //   connection.
    //

    LPTSTR lpszProtocolName;

    //
    // lpszSignatureAlgName - the name of the algorithm used for signing
    //  the certificate.
    //

    LPTSTR lpszSignatureAlgName;

    //
    // lpszEncryptionAlgName - the name of the algorithm used for
    //  doing encryption over the secure channel (SSL/PCT) connection.
    //

    LPTSTR lpszEncryptionAlgName;

    //
    // dwKeySize - size of the key.
    //

    DWORD dwKeySize;

} INTERNET_CERTIFICATE_INFO, * LPINTERNET_CERTIFICATE_INFO;


//
// INTERNET_BUFFERS - combines headers and data. May be chained for e.g. file
// upload or scatter/gather operations. For chunked read/write, lpcszHeader
// contains the chunked-ext
//

typedef struct _INTERNET_BUFFERSA {
    DWORD dwStructSize;                 // used for API versioning. Set to sizeof(INTERNET_BUFFERS)
    struct _INTERNET_BUFFERSA * Next;   // chain of buffers
    LPCSTR   lpcszHeader;               // pointer to headers (may be NULL)
    DWORD dwHeadersLength;              // length of headers if not NULL
    DWORD dwHeadersTotal;               // size of headers if not enough buffer
    LPVOID lpvBuffer;                   // pointer to data buffer (may be NULL)
    DWORD dwBufferLength;               // length of data buffer if not NULL
    DWORD dwBufferTotal;                // total size of chunk, or content-length if not chunked
    DWORD dwOffsetLow;                  // used for read-ranges (only used in HttpSendRequest2)
    DWORD dwOffsetHigh;
} INTERNET_BUFFERSA, * LPINTERNET_BUFFERSA;
typedef struct _INTERNET_BUFFERSW {
    DWORD dwStructSize;                 // used for API versioning. Set to sizeof(INTERNET_BUFFERS)
    struct _INTERNET_BUFFERSW * Next;   // chain of buffers
    LPCWSTR  lpcszHeader;               // pointer to headers (may be NULL)
    DWORD dwHeadersLength;              // length of headers if not NULL
    DWORD dwHeadersTotal;               // size of headers if not enough buffer
    LPVOID lpvBuffer;                   // pointer to data buffer (may be NULL)
    DWORD dwBufferLength;               // length of data buffer if not NULL
    DWORD dwBufferTotal;                // total size of chunk, or content-length if not chunked
    DWORD dwOffsetLow;                  // used for read-ranges (only used in HttpSendRequest2)
    DWORD dwOffsetHigh;
} INTERNET_BUFFERSW, * LPINTERNET_BUFFERSW;
#ifdef UNICODE
typedef INTERNET_BUFFERSW INTERNET_BUFFERS;
typedef LPINTERNET_BUFFERSW LPINTERNET_BUFFERS;
#else
typedef INTERNET_BUFFERSA INTERNET_BUFFERS;
typedef LPINTERNET_BUFFERSA LPINTERNET_BUFFERS;
#endif // UNICODE

//
// prototypes
//

BOOLAPI
InternetTimeFromSystemTimeA(
    IN  CONST SYSTEMTIME *pst,  // input GMT time
    IN  DWORD dwRFC,            // RFC format
    OUT LPSTR lpszTime,         // output string buffer
    IN  DWORD cbTime            // output buffer size
    );

BOOLAPI
InternetTimeFromSystemTimeW(
    IN  CONST SYSTEMTIME *pst,  // input GMT time
    IN  DWORD dwRFC,            // RFC format
    OUT LPWSTR lpszTime,        // output string buffer
    IN  DWORD cbTime            // output buffer size
    );

#ifdef UNICODE
#define InternetTimeFromSystemTime  InternetTimeFromSystemTimeW
#else
#ifdef _WINX32_
#define InternetTimeFromSystemTime  InternetTimeFromSystemTimeA
#else
BOOLAPI
InternetTimeFromSystemTime(
    IN  CONST SYSTEMTIME *pst,  // input GMT time
    IN  DWORD dwRFC,            // RFC format
    OUT LPSTR lpszTime,         // output string buffer
    IN  DWORD cbTime            // output buffer size
    );
#endif // _WINX32_
#endif // !UNICODE

//
// constants for InternetTimeFromSystemTime
//

#define INTERNET_RFC1123_FORMAT     0
#define INTERNET_RFC1123_BUFSIZE   30

BOOLAPI
InternetTimeToSystemTimeA(
    IN  LPCSTR lpszTime,         // NULL terminated string
    OUT SYSTEMTIME *pst,         // output in GMT time
    IN  DWORD dwReserved
    );

BOOLAPI
InternetTimeToSystemTimeW(
    IN  LPCWSTR lpszTime,        // NULL terminated string
    OUT SYSTEMTIME *pst,         // output in GMT time
    IN  DWORD dwReserved
    );

#ifdef UNICODE
#define InternetTimeToSystemTime  InternetTimeToSystemTimeW
#else
#ifdef _WINX32_
#define InternetTimeToSystemTime  InternetTimeToSystemTimeA
#else
BOOLAPI
InternetTimeToSystemTime(
    IN  LPCSTR lpszTime,         // NULL terminated string
    OUT SYSTEMTIME *pst,         // output in GMT time
    IN  DWORD dwReserved
    );
#endif // _WINX32_
#endif // !UNICODE


BOOLAPI
InternetCrackUrlA(
    IN LPCSTR lpszUrl,
    IN DWORD dwUrlLength,
    IN DWORD dwFlags,
    IN OUT LPURL_COMPONENTSA lpUrlComponents
    );
BOOLAPI
InternetCrackUrlW(
    IN LPCWSTR lpszUrl,
    IN DWORD dwUrlLength,
    IN DWORD dwFlags,
    IN OUT LPURL_COMPONENTSW lpUrlComponents
    );
#ifdef UNICODE
#define InternetCrackUrl  InternetCrackUrlW
#else
#define InternetCrackUrl  InternetCrackUrlA
#endif // !UNICODE

BOOLAPI
InternetCreateUrlA(
    IN LPURL_COMPONENTSA lpUrlComponents,
    IN DWORD dwFlags,
    OUT LPSTR lpszUrl,
    IN OUT LPDWORD lpdwUrlLength
    );
BOOLAPI
InternetCreateUrlW(
    IN LPURL_COMPONENTSW lpUrlComponents,
    IN DWORD dwFlags,
    OUT LPWSTR lpszUrl,
    IN OUT LPDWORD lpdwUrlLength
    );
#ifdef UNICODE
#define InternetCreateUrl  InternetCreateUrlW
#else
#define InternetCreateUrl  InternetCreateUrlA
#endif // !UNICODE

BOOLAPI
InternetCanonicalizeUrlA(
    IN LPCSTR lpszUrl,
    OUT LPSTR lpszBuffer,
    IN OUT LPDWORD lpdwBufferLength,
    IN DWORD dwFlags
    );
BOOLAPI
InternetCanonicalizeUrlW(
    IN LPCWSTR lpszUrl,
    OUT LPWSTR lpszBuffer,
    IN OUT LPDWORD lpdwBufferLength,
    IN DWORD dwFlags
    );
#ifdef UNICODE
#define InternetCanonicalizeUrl  InternetCanonicalizeUrlW
#else
#define InternetCanonicalizeUrl  InternetCanonicalizeUrlA
#endif // !UNICODE

BOOLAPI
InternetCombineUrlA(
    IN LPCSTR lpszBaseUrl,
    IN LPCSTR lpszRelativeUrl,
    OUT LPSTR lpszBuffer,
    IN OUT LPDWORD lpdwBufferLength,
    IN DWORD dwFlags
    );
BOOLAPI
InternetCombineUrlW(
    IN LPCWSTR lpszBaseUrl,
    IN LPCWSTR lpszRelativeUrl,
    OUT LPWSTR lpszBuffer,
    IN OUT LPDWORD lpdwBufferLength,
    IN DWORD dwFlags
    );
#ifdef UNICODE
#define InternetCombineUrl  InternetCombineUrlW
#else
#define InternetCombineUrl  InternetCombineUrlA
#endif // !UNICODE

//
// flags for InternetCrackUrl() and InternetCreateUrl()
//

#define ICU_ESCAPE      0x80000000  // (un)escape URL characters
#define ICU_USERNAME    0x40000000  // use internal username & password

//
// flags for InternetCanonicalizeUrl() and InternetCombineUrl()
//

#define ICU_NO_ENCODE   0x20000000  // Don't convert unsafe characters to escape sequence
#define ICU_DECODE      0x10000000  // Convert %XX escape sequences to characters
#define ICU_NO_META     0x08000000  // Don't convert .. etc. meta path sequences
#define ICU_ENCODE_SPACES_ONLY 0x04000000  // Encode spaces only
#define ICU_BROWSER_MODE 0x02000000 // Special encode/decode rules for browser
#define ICU_ENCODE_PERCENT      0x00001000      // Encode any percent (ASCII25)
        // signs encountered, default is to not encode percent.

INTERNETAPI
HINTERNET
WINAPI
InternetOpenA(
    IN LPCSTR lpszAgent,
    IN DWORD dwAccessType,
    IN LPCSTR lpszProxy OPTIONAL,
    IN LPCSTR lpszProxyBypass OPTIONAL,
    IN DWORD dwFlags
    );
INTERNETAPI
HINTERNET
WINAPI
InternetOpenW(
    IN LPCWSTR lpszAgent,
    IN DWORD dwAccessType,
    IN LPCWSTR lpszProxy OPTIONAL,
    IN LPCWSTR lpszProxyBypass OPTIONAL,
    IN DWORD dwFlags
    );
#ifdef UNICODE
#define InternetOpen  InternetOpenW