1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */ 2 /* 3 * Copyright 2007 Massachusetts Institute of Technology. 4 * All Rights Reserved. 5 * 6 * Export of this software from the United States of America may 7 * require a specific license from the United States Government. 8 * It is the responsibility of any person or organization contemplating 9 * export to obtain such a license before exporting. 10 * 11 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 12 * distribute this software and its documentation for any purpose and 13 * without fee is hereby granted, provided that the above copyright 14 * notice appear in all copies and that both that copyright notice and 15 * this permission notice appear in supporting documentation, and that 16 * the name of M.I.T. not be used in advertising or publicity pertaining 17 * to distribution of the software without specific, written prior 18 * permission. Furthermore if you modify this software you must label 19 * your software as modified software and not distribute it in such a 20 * fashion that it might be confused with the original M.I.T. software. 21 * M.I.T. makes no representations about the suitability of 22 * this software for any purpose. It is provided "as is" without express 23 * or implied warranty. 24 */ 25 /* 26 * Copyright 1987, 1988 by MIT Student Information Processing Board 27 * 28 * For copyright information, see copyright.h. 29 */ 30 #include "ss_internal.h" 31 #include "copyright.h" 32 #define size sizeof(ss_data *) 33 34 /* XXX The memory in _ss_table never gets freed up until program exit! 35 If you change the code to free it and stick a null pointer into 36 _ss_table[sci_idx], make sure you change the allocation routine to 37 not assume there are no null pointers in the middle of the 38 array. */ 39 int 40 ss_create_invocation(char *subsystem_name, char *version_string, 41 char *info_ptr, ss_request_table *request_table_ptr, 42 int *code_ptr) 43 { 44 int sci_idx; 45 ss_data *new_table; 46 ss_data **table, **tmp; 47 48 *code_ptr = 0; 49 table = _ss_table; 50 new_table = (ss_data *) malloc(sizeof(ss_data)); 51 if (new_table == NULL) { 52 *code_ptr = errno; 53 return -1; 54 } 55 56 if (table == (ss_data **) NULL) { 57 table = (ss_data **) malloc(2 * size); 58 if (table == NULL) { 59 *code_ptr = errno; 60 return -1; 61 } 62 table[0] = table[1] = (ss_data *)NULL; 63 _ss_table = table; 64 } 65 initialize_ss_error_table (); 66 67 for (sci_idx = 1; table[sci_idx] != (ss_data *)NULL; sci_idx++) 68 ; 69 tmp = (ss_data **) realloc((char *)table, 70 ((unsigned)sci_idx+2)*size); 71 if (tmp == NULL) { 72 *code_ptr = errno; 73 return 0; 74 } 75 _ss_table = table = tmp; 76 table[sci_idx+1] = (ss_data *) NULL; 77 table[sci_idx] = NULL; 78 79 new_table->subsystem_name = subsystem_name; 80 new_table->subsystem_version = version_string; 81 new_table->argv = (char **)NULL; 82 new_table->current_request = (char *)NULL; 83 new_table->info_dirs = (char **)malloc(sizeof(char *)); 84 if (new_table->info_dirs == NULL) { 85 *code_ptr = errno; 86 free(new_table); 87 return 0; 88 } 89 *new_table->info_dirs = (char *)NULL; 90 new_table->info_ptr = info_ptr; 91 if (asprintf(&new_table->prompt, "%s: ", subsystem_name) < 0) { 92 *code_ptr = errno; 93 free(new_table->info_dirs); 94 free(new_table); 95 return 0; 96 } 97 new_table->abbrev_info = NULL; 98 new_table->flags.escape_disabled = 0; 99 new_table->flags.abbrevs_disabled = 0; 100 new_table->rqt_tables = 101 (ss_request_table **) calloc(2, sizeof(ss_request_table *)); 102 if (new_table->rqt_tables == NULL) { 103 *code_ptr = errno; 104 free(new_table->prompt); 105 free(new_table->info_dirs); 106 free(new_table); 107 return 0; 108 } 109 *(new_table->rqt_tables) = request_table_ptr; 110 *(new_table->rqt_tables+1) = (ss_request_table *) NULL; 111 table[sci_idx] = new_table; 112 return(sci_idx); 113 } 114 115 void 116 ss_delete_invocation(int sci_idx) 117 { 118 ss_data *t; 119 int ignored_code; 120 121 t = ss_info(sci_idx); 122 free(t->prompt); 123 free(t->rqt_tables); 124 while(t->info_dirs[0] != (char *)NULL) 125 ss_delete_info_dir(sci_idx, t->info_dirs[0], &ignored_code); 126 free(t->info_dirs); 127 free(t); 128 } 129