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1.1 ! root 1: /**************************************************************************** ! 2: Microsoft RPC Version 1.0 ! 3: Copyright Microsoft Corp. 1992 ! 4: Discrimination Union Example ! 5: ! 6: FILE: dunionc.c ! 7: USAGE: dunionc -n network_address ! 8: -p protocol_sequence ! 9: -e endpoint ! 10: -o options ! 11: -u uuid ! 12: -s string ! 13: -d discriminant ! 14: -v union_value ! 15: ! 16: PURPOSE: Client side of RPC distributed application ! 17: FUNCTIONS: main() - binds to server and calls remote procedure ! 18: COMMENTS: ! 19: ! 20: ****************************************************************************/ ! 21: #include <stdio.h> ! 22: #include <string.h> ! 23: #include <stdlib.h> ! 24: #include <rpc.h> // RPC API functions, types ! 25: #include "dunion.h" // header file generated by MIDL compiler ! 26: ! 27: short sDiscrim = 0; ! 28: DISCRIM_UNION_PARAM_TYPE up = {1}; ! 29: DISCRIM_UNION_STRUCT_TYPE us = {0, 1}; ! 30: ! 31: void Usage(char * pszProgramName) ! 32: { ! 33: fprintf(stderr, "Usage: %s\n", pszProgramName); ! 34: fprintf(stderr, " -p protocol_sequence\n"); ! 35: fprintf(stderr, " -n network_address\n"); ! 36: fprintf(stderr, " -e endpoint\n"); ! 37: fprintf(stderr, " -o options\n"); ! 38: fprintf(stderr, " -u uuid\n"); ! 39: fprintf(stderr, " -s string\n"); ! 40: fprintf(stderr, " -d discriminant\n"); ! 41: fprintf(stderr, " -v union_value\n"); ! 42: exit(1); ! 43: } ! 44: ! 45: void DisplayUnionValue(void) ! 46: { ! 47: printf("sDiscrim = %d, data = ", sDiscrim); ! 48: switch(sDiscrim) { ! 49: case 0: ! 50: printf("short: %d\n", up.sVal); ! 51: break; ! 52: case 1: ! 53: printf("float: %f\n", up.fVal); ! 54: break; ! 55: case 2: ! 56: printf("char: %c\n", up.chVal); ! 57: break; ! 58: default: ! 59: sDiscrim = 0; ! 60: break; ! 61: } ! 62: } ! 63: ! 64: void * MIDL_user_allocate(size_t len) ! 65: { ! 66: return(malloc(len)); ! 67: } ! 68: ! 69: void MIDL_user_free(void * ptr) ! 70: { ! 71: free(ptr); ! 72: } ! 73: ! 74: ! 75: void main(int argc, char **argv) ! 76: { ! 77: RPC_STATUS status; // returned by RPC API function ! 78: unsigned char * pszUuid = "12345678-1234-1234-1234-123456789ABC"; ! 79: unsigned char * pszProtocolSequence = "ncacn_np"; ! 80: unsigned char * pszNetworkAddress = NULL; ! 81: unsigned char * pszEndpoint = "\\pipe\\dunion"; ! 82: unsigned char * pszOptions = NULL; ! 83: unsigned char * pszStringBinding = NULL; ! 84: int i; ! 85: ! 86: up.sVal = 1; ! 87: // allow the user to override settings with command line switches ! 88: for (i = 1; i < argc; i++) { ! 89: if ((*argv[i] == '-') || (*argv[i] == '/')) { ! 90: switch (tolower(*(argv[i]+1))) { ! 91: case 'p': // protocol sequence ! 92: pszProtocolSequence = argv[++i]; ! 93: break; ! 94: case 'n': // network address ! 95: pszNetworkAddress = argv[++i]; ! 96: break; ! 97: case 'e': ! 98: pszEndpoint = argv[++i]; ! 99: break; ! 100: case 'o': ! 101: pszOptions = argv[++i]; ! 102: break; ! 103: case 'u': ! 104: pszUuid = argv[++i]; ! 105: break; ! 106: case 'd': ! 107: sDiscrim = (short) atoi(argv[++i]); ! 108: if ((sDiscrim > 3) || (sDiscrim < 0)) ! 109: sDiscrim = 0; ! 110: us.sDiscrim = sDiscrim; ! 111: break; ! 112: case 'v': ! 113: switch(sDiscrim) { ! 114: case 0: ! 115: up.sVal = (short) atoi(argv[++i]); ! 116: us.u.sVal = up.sVal; ! 117: break; ! 118: case 1: ! 119: up.fVal = (float) atof(argv[++i]); ! 120: us.u.fVal = up.fVal; ! 121: break; ! 122: case 2: ! 123: up.chVal = *(argv[++i]); ! 124: us.u.chVal = up.chVal; ! 125: break; ! 126: default: ! 127: break; ! 128: } ! 129: case 'h': ! 130: case '?': ! 131: default: ! 132: Usage(argv[0]); ! 133: } ! 134: } ! 135: else ! 136: Usage(argv[0]); ! 137: } ! 138: /* Use a convenience function to concatenate the elements of */ ! 139: /* the string binding into the proper sequence. */ ! 140: ! 141: status = RpcStringBindingCompose(pszUuid, ! 142: pszProtocolSequence, ! 143: pszNetworkAddress, ! 144: pszEndpoint, ! 145: pszOptions, ! 146: &pszStringBinding); ! 147: printf("RpcStringBindingCompose returned 0x%x\n", status); ! 148: printf("pszStringBinding = %s\n", pszStringBinding); ! 149: if (status) ! 150: exit(2); ! 151: ! 152: /* Set the binding handle that will be used to bind to the server. */ ! 153: ! 154: status = RpcBindingFromStringBinding(pszStringBinding, ! 155: &hDiscrim); ! 156: printf("RpcBindingFromStringBinding returned 0x%x\n", status); ! 157: if (status) ! 158: exit(2); ! 159: ! 160: printf("Calling the remote procedure 'UnionParamProc'\n"); ! 161: ! 162: DisplayUnionValue(); // display value before call ! 163: UnionParamProc(up, sDiscrim); // call the remote procedure ! 164: ! 165: UnionStructProc(us); ! 166: DisplayUnionValue(); // display value after call ! 167: ! 168: Shutdown(); // Shut down the server ! 169: ! 170: /* The remote procedure call is complete. Free the binding handle */ ! 171: status = RpcBindingFree(&hDiscrim); // remote calls done; unbind ! 172: printf("RpcBindingFree returned 0x%x\n", status); ! 173: if (status) ! 174: exit(2); ! 175: ! 176: exit(0); ! 177: } ! 178: ! 179: /* end dunionc.c */
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