src/TortoisePlink/defs.h

   1 /*
   2  * defs.h: initial definitions for PuTTY.
   3  *
   4  * The rule about this header file is that it can't depend on any
   5  * other header file in this code base. This is where we define
   6  * things, as much as we can, that other headers will want to refer
   7  * to, such as opaque structure types and their associated typedefs,
   8  * or macros that are used by other headers.
   9  */
  10
  11 #ifndef PUTTY_DEFS_H
  12 #define PUTTY_DEFS_H
  13
  14 #ifdef NDEBUG
  15 /*
  16  * PuTTY is a security project, so assertions are important - if an
  17  * assumption is violated, proceeding anyway may have far worse
  18  * consequences than simple program termination. This check and #error
  19  * should arrange that we don't ever accidentally compile assertions
  20  * out.
  21  */
  22 #error Do not compile this code base with NDEBUG defined!
  23 #endif
  24
  25 #if HAVE_CMAKE_H
  26 #include "cmake.h"
  27 #endif
  28
  29 #include <stddef.h>
  30 #include <stdint.h>
  31 #include <stdio.h>                     /* for __MINGW_PRINTF_FORMAT */
  32 #include <stdbool.h>
  33
  34 #if defined _MSC_VER && _MSC_VER < 1800
  35 /* Work around lack of inttypes.h and strtoumax in older MSVC */
  36 #define PRIx32 "x"
  37 #define PRIu32 "u"
  38 #define PRIu64 "I64u"
  39 #define PRIdMAX "I64d"
  40 #define PRIXMAX "I64X"
  41 #define SCNu64 "I64u"
  42 #define SIZEx "Ix"
  43 #define SIZEu "Iu"
  44 uintmax_t strtoumax(const char *nptr, char **endptr, int base);
  45 /* Also, define a LEGACY_WINDOWS flag to enable other workarounds */
  46 #define LEGACY_WINDOWS
  47 #else
  48 #include <inttypes.h>
  49 /* Because we still support older MSVC libraries which don't recognise the
  50  * standard C "z" modifier for size_t-sized integers, we must use an
  51  * inttypes.h-style macro for those */
  52 #define SIZEx "zx"
  53 #define SIZEu "zu"
  54 #endif
  55
  56 #if defined __GNUC__ || defined __clang__
  57 /*
  58  * On MinGW, the correct compiler format checking for vsnprintf() etc
  59  * can depend on compile-time flags; these control whether you get
  60  * ISO C or Microsoft's non-standard format strings.
  61  * We sometimes use __attribute__ ((format)) for our own printf-like
  62  * functions, which are ultimately interpreted by the toolchain-chosen
  63  * printf, so we need to take that into account to get correct warnings.
  64  */
  65 #ifdef __MINGW_PRINTF_FORMAT
  66 #define PRINTF_LIKE(fmt_index, ellipsis_index) \
  67     __attribute__ ((format (__MINGW_PRINTF_FORMAT, fmt_index, ellipsis_index)))
  68 #else
  69 #define PRINTF_LIKE(fmt_index, ellipsis_index) \
  70     __attribute__ ((format (printf, fmt_index, ellipsis_index)))
  71 #endif
  72 #else /* __GNUC__ */
  73 #define PRINTF_LIKE(fmt_index, ellipsis_index)
  74 #endif /* __GNUC__ */
  75
  76 typedef struct conf_tag Conf;
  77 typedef struct terminal_tag Terminal;
  78 typedef struct term_utf8_decode term_utf8_decode;
  79
  80 typedef struct Filename Filename;
  81 typedef struct FontSpec FontSpec;
  82
  83 typedef struct bufchain_tag bufchain;
  84
  85 typedef struct strbuf strbuf;
  86 typedef struct LoadedFile LoadedFile;
  87
  88 typedef struct RSAKey RSAKey;
  89
  90 typedef struct BinarySink BinarySink;
  91 typedef struct BinarySource BinarySource;
  92 typedef struct stdio_sink stdio_sink;
  93 typedef struct bufchain_sink bufchain_sink;
  94 typedef struct handle_sink handle_sink;
  95
  96 typedef struct IdempotentCallback IdempotentCallback;
  97
  98 typedef struct SockAddr SockAddr;
  99
 100 typedef struct Socket Socket;
 101 typedef struct Plug Plug;
 102 typedef struct SocketPeerInfo SocketPeerInfo;
 103 typedef struct DeferredSocketOpener DeferredSocketOpener;
 104 typedef struct DeferredSocketOpenerVtable DeferredSocketOpenerVtable;
 105
 106 typedef struct Backend Backend;
 107 typedef struct BackendVtable BackendVtable;
 108 typedef struct Interactor Interactor;
 109 typedef struct InteractorVtable InteractorVtable;
 110 typedef struct InteractionReadySeat InteractionReadySeat;
 111
 112 typedef struct Ldisc_tag Ldisc;
 113 typedef struct LogContext LogContext;
 114 typedef struct LogPolicy LogPolicy;
 115 typedef struct LogPolicyVtable LogPolicyVtable;
 116
 117 typedef struct Seat Seat;
 118 typedef struct SeatVtable SeatVtable;
 119 typedef struct SeatDialogText SeatDialogText;
 120 typedef struct SeatDialogTextItem SeatDialogTextItem;
 121 typedef struct SeatDialogPromptDescriptions SeatDialogPromptDescriptions;
 122 typedef struct SeatPromptResult SeatPromptResult;
 123
 124 typedef struct cmdline_get_passwd_input_state cmdline_get_passwd_input_state;
 125
 126 typedef struct TermWin TermWin;
 127 typedef struct TermWinVtable TermWinVtable;
 128
 129 typedef struct Ssh Ssh;
 130
 131 typedef struct mp_int mp_int;
 132 typedef struct MontyContext MontyContext;
 133
 134 typedef struct WeierstrassCurve WeierstrassCurve;
 135 typedef struct WeierstrassPoint WeierstrassPoint;
 136 typedef struct MontgomeryCurve MontgomeryCurve;
 137 typedef struct MontgomeryPoint MontgomeryPoint;
 138 typedef struct EdwardsCurve EdwardsCurve;
 139 typedef struct EdwardsPoint EdwardsPoint;
 140
 141 typedef struct SshServerConfig SshServerConfig;
 142 typedef struct SftpServer SftpServer;
 143 typedef struct SftpServerVtable SftpServerVtable;
 144
 145 typedef struct Channel Channel;
 146 typedef struct SshChannel SshChannel;
 147 typedef struct mainchan mainchan;
 148
 149 typedef struct CertExprBuilder CertExprBuilder;
 150
 151 typedef struct ssh_sharing_state ssh_sharing_state;
 152 typedef struct ssh_sharing_connstate ssh_sharing_connstate;
 153 typedef struct share_channel share_channel;
 154
 155 typedef struct PortFwdManager PortFwdManager;
 156 typedef struct PortFwdRecord PortFwdRecord;
 157 typedef struct ConnectionLayer ConnectionLayer;
 158
 159 typedef struct prng prng;
 160 typedef struct ssh_hashalg ssh_hashalg;
 161 typedef struct ssh_hash ssh_hash;
 162 typedef struct ssh_kex ssh_kex;
 163 typedef struct ssh_kexes ssh_kexes;
 164 typedef struct ssh_keyalg ssh_keyalg;
 165 typedef struct ssh_key ssh_key;
 166 typedef struct ssh_compressor ssh_compressor;
 167 typedef struct ssh_decompressor ssh_decompressor;
 168 typedef struct ssh_compression_alg ssh_compression_alg;
 169 typedef struct ssh2_userkey ssh2_userkey;
 170 typedef struct ssh2_macalg ssh2_macalg;
 171 typedef struct ssh2_mac ssh2_mac;
 172 typedef struct ssh_cipheralg ssh_cipheralg;
 173 typedef struct ssh_cipher ssh_cipher;
 174 typedef struct ssh2_ciphers ssh2_ciphers;
 175 typedef struct dh_ctx dh_ctx;
 176 typedef struct ecdh_key ecdh_key;
 177 typedef struct ecdh_keyalg ecdh_keyalg;
 178 typedef struct NTRUKeyPair NTRUKeyPair;
 179 typedef struct NTRUEncodeSchedule NTRUEncodeSchedule;
 180 typedef struct RFC6979 RFC6979;
 181 typedef struct RFC6979Result RFC6979Result;
 182
 183 typedef struct dlgparam dlgparam;
 184 typedef struct dlgcontrol dlgcontrol;
 185
 186 typedef struct settings_w settings_w;
 187 typedef struct settings_r settings_r;
 188 typedef struct settings_e settings_e;
 189 typedef struct ca_options ca_options;
 190 typedef struct host_ca host_ca;
 191 typedef struct host_ca_enum host_ca_enum;
 192
 193 typedef struct SessionSpecial SessionSpecial;
 194
 195 typedef struct StripCtrlChars StripCtrlChars;
 196
 197 typedef struct BidiContext BidiContext;
 198
 199 /*
 200  * A small structure wrapping up a (pointer, length) pair so that it
 201  * can be conveniently passed to or from a function.
 202  */
 203 typedef struct ptrlen {
 204     const void *ptr;
 205     size_t len;
 206 } ptrlen;
 207
 208 typedef struct logblank_t logblank_t;
 209
 210 typedef struct BinaryPacketProtocol BinaryPacketProtocol;
 211 typedef struct PacketProtocolLayer PacketProtocolLayer;
 212
 213 struct unicode_data;
 214
 215 /* Do a compile-time type-check of 'to_check' (without evaluating it),
 216  * as a side effect of returning the value 'to_return'. Note that
 217  * although this macro double-*expands* to_return, it always
 218  * *evaluates* exactly one copy of it, so it's side-effect safe. */
 219 #define TYPECHECK(to_check, to_return)                  \
 220     (sizeof(to_check) ? (to_return) : (to_return))
 221
 222 /* Return a pointer to the object of structure type 'type' whose field
 223  * with name 'field' is pointed at by 'object'. */
 224 #define container_of(object, type, field)                               \
 225     TYPECHECK(object == &((type *)0)->field,                            \
 226               ((type *)(((char *)(object)) - offsetof(type, field))))
 227
 228 #if defined __GNUC__ || defined __clang__
 229 #define NORETURN __attribute__((__noreturn__))
 230 #elif defined _MSC_VER
 231 #define NORETURN __declspec(noreturn)
 232 #else
 233 #define NORETURN
 234 #endif
 235
 236 /*
 237  * Standard macro definitions. STR() behaves like the preprocessor
 238  * stringification # operator, and CAT() behaves like the token paste
 239  * ## operator, except that each one macro-expands its argument(s)
 240  * first, unlike the raw version. E.g.
 241  *
 242  *   #__LINE__               ->    "__LINE__"
 243  *   STR(__LINE__)           ->    "1234"             (or whatever)
 244  *
 245  * and similarly,
 246  *
 247  *   foo ## __LINE__         ->    foo__LINE__
 248  *   CAT(foo, __LINE__)      ->    foo1234            (or whatever)
 249  *
 250  * The expansion is achieved by having each macro pass its arguments
 251  * to a secondary inner macro, because parameter lists of a macro call
 252  * get expanded before the called macro is invoked. So STR(__LINE__)
 253  * -> STR_INNER(1234) -> #1234 -> "1234", and similarly for CAT.
 254  */
 255 #define STR_INNER(x) #x
 256 #define STR(x) STR_INNER(x)
 257 #define CAT_INNER(x,y) x ## y
 258 #define CAT(x,y) CAT_INNER(x,y)
 259
 260 /*
 261  * Structure shared between ssh.h and storage.h, giving strictness
 262  * options relating to checking of an OpenSSH certificate. It's a bit
 263  * cheaty to put something so specific in here, but more painful to
 264  * put it in putty.h.
 265  */
 266 struct ca_options {
 267     bool permit_rsa_sha1, permit_rsa_sha256, permit_rsa_sha512;
 268 };
 269
 270 #endif /* PUTTY_DEFS_H */