1 /* 2 * Copyright 1987, 1988 by MIT Student Information Processing Board 3 * 4 * Permission to use, copy, modify, and distribute this software and 5 * its documentation for any purpose is hereby granted, provided that 6 * the names of M.I.T. and the M.I.T. S.I.P.B. not be used in 7 * advertising or publicity pertaining to distribution of the software 8 * without specific, written prior permission. M.I.T. and the 9 * M.I.T. S.I.P.B. make no representations about the suitability of 10 * this software for any purpose. It is provided "as is" without 11 * express or implied warranty. 12 */ 13 14 #include "config.h" 15 #ifdef HAS_STDLIB_H 16 #include <stdlib.h> 17 #endif 18 #include "ss_internal.h" 19 #define size sizeof(ss_data *) 20 #ifdef HAVE_DLOPEN 21 #include <dlfcn.h> 22 #endif 23 #include <errno.h> 24 25 int ss_create_invocation(const char *subsystem_name, const char *version_string, 26 void *info_ptr, ss_request_table *request_table_ptr, 27 int *code_ptr) 28 { 29 register int sci_idx; 30 register ss_data *new_table; 31 register ss_data **table; 32 33 *code_ptr = 0; 34 table = _ss_table; 35 new_table = (ss_data *) malloc(sizeof(ss_data)); 36 37 if (table == (ss_data **) NULL) { 38 table = (ss_data **) malloc(2 * size); 39 table[0] = table[1] = (ss_data *)NULL; 40 } 41 initialize_ss_error_table (); 42 43 for (sci_idx = 1; table[sci_idx] != (ss_data *)NULL; sci_idx++) 44 ; 45 table = (ss_data **) realloc((char *)table, 46 ((unsigned)sci_idx+2)*size); 47 if (table == NULL) { 48 *code_ptr = ENOMEM; 49 free(new_table); 50 return 0; 51 } 52 table[sci_idx+1] = (ss_data *) NULL; 53 table[sci_idx] = new_table; 54 55 new_table->subsystem_name = subsystem_name; 56 new_table->subsystem_version = version_string; 57 new_table->argv = (char **)NULL; 58 new_table->current_request = (char *)NULL; 59 new_table->info_dirs = (char **)malloc(sizeof(char *)); 60 *new_table->info_dirs = (char *)NULL; 61 new_table->info_ptr = info_ptr; 62 new_table->prompt = malloc((unsigned)strlen(subsystem_name)+4); 63 strcpy(new_table->prompt, subsystem_name); 64 strcat(new_table->prompt, ": "); 65 #ifdef silly 66 new_table->abbrev_info = ss_abbrev_initialize("/etc/passwd", code_ptr); 67 #else 68 new_table->abbrev_info = NULL; 69 #endif 70 new_table->flags.escape_disabled = 0; 71 new_table->flags.abbrevs_disabled = 0; 72 new_table->rqt_tables = 73 (ss_request_table **) calloc(2, sizeof(ss_request_table *)); 74 *(new_table->rqt_tables) = request_table_ptr; 75 *(new_table->rqt_tables+1) = (ss_request_table *) NULL; 76 77 new_table->readline_handle = 0; 78 new_table->readline_shutdown = 0; 79 new_table->readline = 0; 80 new_table->add_history = 0; 81 new_table->redisplay = 0; 82 new_table->rl_completion_matches = 0; 83 _ss_table = table; 84 #if defined(HAVE_DLOPEN) && defined(SHARED_ELF_LIB) 85 ss_get_readline(sci_idx); 86 #endif 87 return(sci_idx); 88 } 89 90 void 91 ss_delete_invocation(int sci_idx) 92 { 93 register ss_data *t; 94 int ignored_code; 95 96 t = ss_info(sci_idx); 97 free(t->prompt); 98 free(t->rqt_tables); 99 while(t->info_dirs[0] != (char *)NULL) 100 ss_delete_info_dir(sci_idx, t->info_dirs[0], &ignored_code); 101 free(t->info_dirs); 102 #if defined(HAVE_DLOPEN) && defined(SHARED_ELF_LIB) 103 if (t->readline_shutdown) 104 (*t->readline_shutdown)(t); 105 #endif 106 free(t); 107 } 108
