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4973 | right-hear | 1 | /* |
2 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for |
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3 | * unrestricted use provided that this legend is included on all tape |
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4 | * media and as a part of the software program in whole or part. Users |
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5 | * may copy or modify Sun RPC without charge, but are not authorized |
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6 | * to license or distribute it to anyone else except as part of a product or |
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7 | * program developed by the user. |
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8 | * |
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9 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE |
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10 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR |
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11 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. |
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12 | * |
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13 | * Sun RPC is provided with no support and without any obligation on the |
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14 | * part of Sun Microsystems, Inc. to assist in its use, correction, |
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15 | * modification or enhancement. |
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16 | * |
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17 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE |
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18 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC |
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19 | * OR ANY PART THEREOF. |
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20 | * |
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21 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue |
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22 | * or profits or other special, indirect and consequential damages, even if |
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23 | * Sun has been advised of the possibility of such damages. |
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24 | * |
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25 | * Sun Microsystems, Inc. |
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26 | * 2550 Garcia Avenue |
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27 | * Mountain View, California 94043 |
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28 | */ |
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29 | |||
30 | /* |
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31 | * xdr.h, External Data Representation Serialization Routines. |
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32 | * |
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33 | * Copyright (C) 1984, Sun Microsystems, Inc. |
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34 | */ |
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35 | |||
36 | #ifndef _RPC_XDR_H |
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37 | #define _RPC_XDR_H 1 |
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38 | |||
39 | #include |
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40 | #include |
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41 | #include |
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42 | |||
43 | /* We need FILE. */ |
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44 | #include |
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45 | |||
46 | __BEGIN_DECLS |
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47 | |||
48 | /* |
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49 | * XDR provides a conventional way for converting between C data |
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50 | * types and an external bit-string representation. Library supplied |
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51 | * routines provide for the conversion on built-in C data types. These |
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52 | * routines and utility routines defined here are used to help implement |
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53 | * a type encode/decode routine for each user-defined type. |
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54 | * |
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55 | * Each data type provides a single procedure which takes two arguments: |
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56 | * |
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57 | * bool_t |
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58 | * xdrproc(xdrs, argresp) |
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59 | * XDR *xdrs; |
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60 | * |
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61 | * |
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62 | * xdrs is an instance of a XDR handle, to which or from which the data |
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63 | * type is to be converted. argresp is a pointer to the structure to be |
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64 | * converted. The XDR handle contains an operation field which indicates |
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65 | * which of the operations (ENCODE, DECODE * or FREE) is to be performed. |
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66 | * |
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67 | * XDR_DECODE may allocate space if the pointer argresp is null. This |
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68 | * data can be freed with the XDR_FREE operation. |
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69 | * |
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70 | * We write only one procedure per data type to make it easy |
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71 | * to keep the encode and decode procedures for a data type consistent. |
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72 | * In many cases the same code performs all operations on a user defined type, |
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73 | * because all the hard work is done in the component type routines. |
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74 | * decode as a series of calls on the nested data types. |
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75 | */ |
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76 | |||
77 | /* |
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78 | * Xdr operations. XDR_ENCODE causes the type to be encoded into the |
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79 | * stream. XDR_DECODE causes the type to be extracted from the stream. |
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80 | * XDR_FREE can be used to release the space allocated by an XDR_DECODE |
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81 | * request. |
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82 | */ |
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83 | enum xdr_op { |
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84 | XDR_ENCODE = 0, |
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85 | XDR_DECODE = 1, |
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86 | XDR_FREE = 2 |
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87 | }; |
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88 | |||
89 | /* |
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90 | * This is the number of bytes per unit of external data. |
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91 | */ |
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92 | #define BYTES_PER_XDR_UNIT (4) |
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93 | /* |
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94 | * This only works if the above is a power of 2. But it's defined to be |
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95 | * 4 by the appropriate RFCs. So it will work. And it's normally quicker |
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96 | * than the old routine. |
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97 | */ |
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98 | #if 1 |
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99 | #define RNDUP(x) (((x) + BYTES_PER_XDR_UNIT - 1) & ~(BYTES_PER_XDR_UNIT - 1)) |
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100 | #else /* this is the old routine */ |
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101 | #define RNDUP(x) ((((x) + BYTES_PER_XDR_UNIT - 1) / BYTES_PER_XDR_UNIT) \ |
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102 | * BYTES_PER_XDR_UNIT) |
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103 | #endif |
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104 | |||
105 | /* |
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106 | * The XDR handle. |
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107 | * Contains operation which is being applied to the stream, |
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108 | * an operations vector for the particular implementation (e.g. see xdr_mem.c), |
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109 | * and two private fields for the use of the particular implementation. |
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110 | */ |
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111 | typedef struct XDR XDR; |
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112 | struct XDR |
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113 | { |
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114 | enum xdr_op x_op; /* operation; fast additional param */ |
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115 | struct xdr_ops |
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116 | { |
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117 | bool_t (*x_getlong) (XDR *__xdrs, long *__lp); |
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118 | /* get a long from underlying stream */ |
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119 | bool_t (*x_putlong) (XDR *__xdrs, const long *__lp); |
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120 | /* put a long to " */ |
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121 | bool_t (*x_getbytes) (XDR *__xdrs, char* __addr, unsigned int __len); |
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122 | /* get some bytes from " */ |
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123 | bool_t (*x_putbytes) (XDR *__xdrs, const char *__addr, unsigned int __len); |
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124 | /* put some bytes to " */ |
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125 | unsigned int (*x_getpostn) (const XDR *__xdrs); |
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126 | /* returns bytes off from beginning */ |
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127 | bool_t (*x_setpostn) (XDR *__xdrs, unsigned int __pos); |
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128 | /* lets you reposition the stream */ |
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129 | int32_t *(*x_inline) (XDR *__xdrs, unsigned int __len); |
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130 | /* buf quick ptr to buffered data */ |
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131 | void (*x_destroy) (XDR *__xdrs); |
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132 | /* free privates of this xdr_stream */ |
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133 | bool_t (*x_getint32) (XDR *__xdrs, int32_t *__ip); |
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134 | /* get a int from underlying stream */ |
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135 | bool_t (*x_putint32) (XDR *__xdrs, const int32_t *__ip); |
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136 | /* put a int to " */ |
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137 | } |
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138 | *x_ops; |
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139 | char* x_public; /* users' data */ |
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140 | char* x_private; /* pointer to private data */ |
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141 | char* x_base; /* private used for position info */ |
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142 | unsigned int x_handy; /* extra private word */ |
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143 | }; |
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144 | |||
145 | /* |
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146 | * A xdrproc_t exists for each data type which is to be encoded or decoded. |
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147 | * |
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148 | * The second argument to the xdrproc_t is a pointer to an opaque pointer. |
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149 | * The opaque pointer generally points to a structure of the data type |
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150 | * to be decoded. If this pointer is 0, then the type routines should |
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151 | * allocate dynamic storage of the appropriate size and return it. |
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152 | * bool_t (*xdrproc_t)(XDR *, char* *); |
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153 | */ |
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154 | typedef bool_t (*xdrproc_t) (XDR *, void *,...); |
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155 | |||
156 | |||
157 | /* |
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158 | * Operations defined on a XDR handle |
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159 | * |
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160 | * XDR *xdrs; |
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161 | * int32_t *int32p; |
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162 | * long *longp; |
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163 | * char* addr; |
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164 | * unsigned int len; |
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165 | * unsigned int pos; |
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166 | */ |
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167 | #define XDR_GETINT32(xdrs, int32p) \ |
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168 | (*(xdrs)->x_ops->x_getint32)(xdrs, int32p) |
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169 | #define xdr_getint32(xdrs, int32p) \ |
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170 | (*(xdrs)->x_ops->x_getint32)(xdrs, int32p) |
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171 | |||
172 | #define XDR_PUTINT32(xdrs, int32p) \ |
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173 | (*(xdrs)->x_ops->x_putint32)(xdrs, int32p) |
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174 | #define xdr_putint32(xdrs, int32p) \ |
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175 | (*(xdrs)->x_ops->x_putint32)(xdrs, int32p) |
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176 | |||
177 | #define XDR_GETLONG(xdrs, longp) \ |
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178 | (*(xdrs)->x_ops->x_getlong)(xdrs, longp) |
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179 | #define xdr_getlong(xdrs, longp) \ |
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180 | (*(xdrs)->x_ops->x_getlong)(xdrs, longp) |
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181 | |||
182 | #define XDR_PUTLONG(xdrs, longp) \ |
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183 | (*(xdrs)->x_ops->x_putlong)(xdrs, longp) |
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184 | #define xdr_putlong(xdrs, longp) \ |
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185 | (*(xdrs)->x_ops->x_putlong)(xdrs, longp) |
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186 | |||
187 | #define XDR_GETBYTES(xdrs, addr, len) \ |
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188 | (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len) |
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189 | #define xdr_getbytes(xdrs, addr, len) \ |
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190 | (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len) |
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191 | |||
192 | #define XDR_PUTBYTES(xdrs, addr, len) \ |
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193 | (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len) |
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194 | #define xdr_putbytes(xdrs, addr, len) \ |
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195 | (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len) |
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196 | |||
197 | #define XDR_GETPOS(xdrs) \ |
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198 | (*(xdrs)->x_ops->x_getpostn)(xdrs) |
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199 | #define xdr_getpos(xdrs) \ |
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200 | (*(xdrs)->x_ops->x_getpostn)(xdrs) |
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201 | |||
202 | #define XDR_SETPOS(xdrs, pos) \ |
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203 | (*(xdrs)->x_ops->x_setpostn)(xdrs, pos) |
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204 | #define xdr_setpos(xdrs, pos) \ |
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205 | (*(xdrs)->x_ops->x_setpostn)(xdrs, pos) |
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206 | |||
207 | #define XDR_INLINE(xdrs, len) \ |
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208 | (*(xdrs)->x_ops->x_inline)(xdrs, len) |
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209 | #define xdr_inline(xdrs, len) \ |
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210 | (*(xdrs)->x_ops->x_inline)(xdrs, len) |
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211 | |||
212 | #define XDR_DESTROY(xdrs) \ |
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213 | do { \ |
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214 | if ((xdrs)->x_ops->x_destroy) \ |
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215 | (*(xdrs)->x_ops->x_destroy)(xdrs); \ |
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216 | } while (0) |
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217 | #define xdr_destroy(xdrs) \ |
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218 | do { \ |
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219 | if ((xdrs)->x_ops->x_destroy) \ |
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220 | (*(xdrs)->x_ops->x_destroy)(xdrs); \ |
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221 | } while (0) |
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222 | |||
223 | /* |
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224 | * Support struct for discriminated unions. |
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225 | * You create an array of xdrdiscrim structures, terminated with |
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226 | * a entry with a null procedure pointer. The xdr_union routine gets |
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227 | * the discriminant value and then searches the array of structures |
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228 | * for a matching value. If a match is found the associated xdr routine |
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229 | * is called to handle that part of the union. If there is |
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230 | * no match, then a default routine may be called. |
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231 | * If there is no match and no default routine it is an error. |
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232 | */ |
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233 | #define NULL_xdrproc_t ((xdrproc_t)0) |
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234 | struct xdr_discrim |
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235 | { |
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236 | int value; |
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237 | xdrproc_t proc; |
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238 | }; |
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239 | |||
240 | /* |
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241 | * Inline routines for fast encode/decode of primitive data types. |
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242 | * Caveat emptor: these use single memory cycles to get the |
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243 | * data from the underlying buffer, and will fail to operate |
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244 | * properly if the data is not aligned. The standard way to use these |
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245 | * is to say: |
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246 | * if ((buf = XDR_INLINE(xdrs, count)) == NULL) |
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247 | * return (FALSE); |
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248 | * <<< macro calls >>> |
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249 | * where ``count'' is the number of bytes of data occupied |
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250 | * by the primitive data types. |
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251 | * |
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252 | * N.B. and frozen for all time: each data type here uses 4 bytes |
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253 | * of external representation. |
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254 | */ |
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255 | |||
256 | #define IXDR_GET_INT32(buf) ((int32_t)ntohl((uint32_t)*(buf)++)) |
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257 | #define IXDR_PUT_INT32(buf, v) (*(buf)++ = (int32_t)htonl((uint32_t)(v))) |
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258 | #define IXDR_GET_U_INT32(buf) ((uint32_t)IXDR_GET_INT32(buf)) |
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259 | #define IXDR_PUT_U_INT32(buf, v) IXDR_PUT_INT32(buf, (int32_t)(v)) |
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260 | |||
261 | /* WARNING: The IXDR_*_LONG defines are removed by Sun for new platforms |
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262 | * and shouldn't be used any longer. Code which use this defines or longs |
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263 | * in the RPC code will not work on 64bit Solaris platforms ! |
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264 | */ |
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265 | #define IXDR_GET_LONG(buf) \ |
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266 | ((long)ntohl((unsigned long)*__extension__((uint32_t*)(buf))++)) |
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267 | #define IXDR_PUT_LONG(buf, v) \ |
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268 | (*__extension__((uint32_t*)(buf))++ = (long)htonl((unsigned long)(v))) |
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269 | #define IXDR_GET_U_LONG(buf) ((unsigned long)IXDR_GET_LONG(buf)) |
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270 | #define IXDR_PUT_U_LONG(buf, v) IXDR_PUT_LONG(buf, (long)(v)) |
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271 | |||
272 | |||
273 | #define IXDR_GET_BOOL(buf) ((bool_t)IXDR_GET_LONG(buf)) |
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274 | #define IXDR_GET_ENUM(buf, t) ((t)IXDR_GET_LONG(buf)) |
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275 | #define IXDR_GET_SHORT(buf) ((short)IXDR_GET_LONG(buf)) |
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276 | #define IXDR_GET_U_SHORT(buf) ((unsigned short)IXDR_GET_LONG(buf)) |
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277 | |||
278 | #define IXDR_PUT_BOOL(buf, v) IXDR_PUT_LONG(buf, (long)(v)) |
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279 | #define IXDR_PUT_ENUM(buf, v) IXDR_PUT_LONG(buf, (long)(v)) |
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280 | #define IXDR_PUT_SHORT(buf, v) IXDR_PUT_LONG(buf, (long)(v)) |
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281 | #define IXDR_PUT_U_SHORT(buf, v) IXDR_PUT_LONG(buf, (long)(v)) |
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282 | |||
283 | /* |
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284 | * These are the "generic" xdr routines. |
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285 | * None of these can have const applied because it's not possible to |
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286 | * know whether the call is a read or a write to the passed parameter |
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287 | * also, the XDR structure is always updated by some of these calls. |
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288 | */ |
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289 | extern bool_t xdr_void (void) __THROW; |
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290 | extern bool_t xdr_short (XDR *__xdrs, short *__sp) __THROW; |
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291 | extern bool_t xdr_u_short (XDR *__xdrs, unsigned short *__usp) __THROW; |
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292 | extern bool_t xdr_int (XDR *__xdrs, int *__ip) __THROW; |
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293 | extern bool_t xdr_u_int (XDR *__xdrs, unsigned int *__up) __THROW; |
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294 | extern bool_t xdr_long (XDR *__xdrs, long *__lp) __THROW; |
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295 | extern bool_t xdr_u_long (XDR *__xdrs, unsigned long *__ulp) __THROW; |
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296 | extern bool_t xdr_hyper (XDR *__xdrs, int64_t *__llp) __THROW; |
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297 | extern bool_t xdr_u_hyper (XDR *__xdrs, uint64_t *__ullp) __THROW; |
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298 | extern bool_t xdr_longlong_t (XDR *__xdrs, int64_t *__llp) __THROW; |
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299 | extern bool_t xdr_u_longlong_t (XDR *__xdrs, uint64_t *__ullp) __THROW; |
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300 | extern bool_t xdr_int8_t (XDR *__xdrs, int8_t *__ip) __THROW; |
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301 | extern bool_t xdr_uint8_t (XDR *__xdrs, uint8_t *__up) __THROW; |
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302 | extern bool_t xdr_int16_t (XDR *__xdrs, int16_t *__ip) __THROW; |
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303 | extern bool_t xdr_uint16_t (XDR *__xdrs, uint16_t *__up) __THROW; |
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304 | extern bool_t xdr_int32_t (XDR *__xdrs, int32_t *__ip) __THROW; |
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305 | extern bool_t xdr_uint32_t (XDR *__xdrs, uint32_t *__up) __THROW; |
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306 | extern bool_t xdr_int64_t (XDR *__xdrs, int64_t *__ip) __THROW; |
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307 | extern bool_t xdr_uint64_t (XDR *__xdrs, uint64_t *__up) __THROW; |
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308 | extern bool_t xdr_bool (XDR *__xdrs, bool_t *__bp) __THROW; |
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309 | extern bool_t xdr_enum (XDR *__xdrs, enum_t *__ep) __THROW; |
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310 | extern bool_t xdr_array (XDR * _xdrs, char* *__addrp, unsigned int *__sizep, |
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311 | unsigned int __maxsize, unsigned int __elsize, xdrproc_t __elproc) |
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312 | __THROW; |
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313 | extern bool_t xdr_bytes (XDR *__xdrs, char **__cpp, unsigned int *__sizep, |
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314 | unsigned int __maxsize) __THROW; |
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315 | extern bool_t xdr_opaque (XDR *__xdrs, char* __cp, unsigned int __cnt) __THROW; |
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316 | extern bool_t xdr_string (XDR *__xdrs, char **__cpp, unsigned int __maxsize) __THROW; |
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317 | extern bool_t xdr_union (XDR *__xdrs, enum_t *__dscmp, char *__unp, |
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318 | const struct xdr_discrim *__choices, |
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319 | xdrproc_t dfault) __THROW; |
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320 | extern bool_t xdr_char (XDR *__xdrs, char *__cp) __THROW; |
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321 | extern bool_t xdr_u_char (XDR *__xdrs, unsigned char *__cp) __THROW; |
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322 | extern bool_t xdr_vector (XDR *__xdrs, char *__basep, unsigned int __nelem, |
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323 | unsigned int __elemsize, xdrproc_t __xdr_elem) __THROW; |
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324 | extern bool_t xdr_float (XDR *__xdrs, float *__fp) __THROW; |
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325 | extern bool_t xdr_double (XDR *__xdrs, double *__dp) __THROW; |
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326 | extern bool_t xdr_reference (XDR *__xdrs, char* *__xpp, unsigned int __size, |
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327 | xdrproc_t __proc) __THROW; |
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328 | extern bool_t xdr_pointer (XDR *__xdrs, char **__objpp, |
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329 | unsigned int __obj_size, xdrproc_t __xdr_obj) __THROW; |
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330 | extern bool_t xdr_wrapstring (XDR *__xdrs, char **__cpp) __THROW; |
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331 | extern unsigned long xdr_sizeof (xdrproc_t, void *) __THROW; |
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332 | |||
333 | /* |
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334 | * Common opaque bytes objects used by many rpc protocols; |
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335 | * declared here due to commonality. |
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336 | */ |
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337 | #define MAX_NETOBJ_SZ 1024 |
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338 | struct netobj |
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339 | { |
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340 | unsigned int n_len; |
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341 | char *n_bytes; |
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342 | }; |
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343 | typedef struct netobj netobj; |
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344 | extern bool_t xdr_netobj (XDR *__xdrs, struct netobj *__np) __THROW; |
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345 | |||
346 | /* |
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347 | * These are the public routines for the various implementations of |
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348 | * xdr streams. |
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349 | */ |
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350 | |||
351 | /* XDR using memory buffers */ |
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352 | extern void xdrmem_create (XDR *__xdrs, const char* __addr, |
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353 | unsigned int __size, enum xdr_op __xop) __THROW; |
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354 | |||
355 | /* XDR using stdio library */ |
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356 | extern void xdrstdio_create (XDR *__xdrs, FILE *__file, enum xdr_op __xop) |
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357 | __THROW; |
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358 | |||
359 | /* XDR pseudo records for tcp */ |
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360 | extern void xdrrec_create (XDR *__xdrs, unsigned int __sendsize, |
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361 | unsigned int __recvsize, char* __tcp_handle, |
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362 | int (*__readit) (char *, char *, int), |
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363 | int (*__writeit) (char *, char *, int)) __THROW; |
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364 | |||
365 | /* make end of xdr record */ |
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366 | extern bool_t xdrrec_endofrecord (XDR *__xdrs, bool_t __sendnow) __THROW; |
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367 | |||
368 | /* move to beginning of next record */ |
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369 | extern bool_t xdrrec_skiprecord (XDR *__xdrs) __THROW; |
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370 | |||
371 | /* true if no more input */ |
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372 | extern bool_t xdrrec_eof (XDR *__xdrs) __THROW; |
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373 | |||
374 | /* free memory buffers for xdr */ |
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375 | extern void xdr_free (xdrproc_t __proc, char *__objp) __THROW; |
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376 | |||
377 | __END_DECLS |
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378 | |||
379 | #endif /* rpc/xdr.h */><><<> |