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 #ifdef HAS_STDLIB_H 15 #include <stdlib.h> 16 #endif 17 #include "ss_internal.h" 18 #define size sizeof(ss_data *) 19 #ifdef HAVE_DLOPEN 20 #include <dlfcn.h> 21 #endif 22 #include <errno.h> 23 24 int ss_create_invocation(const char *subsystem_name, const char *version_string, 25 void *info_ptr, ss_request_table *request_table_ptr, 26 int *code_ptr) 27 { 28 register int sci_idx; 29 register ss_data *new_table; 30 register ss_data **table; 31 32 *code_ptr = 0; 33 table = _ss_table; 34 new_table = (ss_data *) malloc(sizeof(ss_data)); 35 36 if (table == (ss_data **) NULL) { 37 table = (ss_data **) malloc(2 * size); 38 table[0] = table[1] = (ss_data *)NULL; 39 } 40 initialize_ss_error_table (); 41 42 for (sci_idx = 1; table[sci_idx] != (ss_data *)NULL; sci_idx++) 43 ; 44 table = (ss_data **) realloc((char *)table, 45 ((unsigned)sci_idx+2)*size); 46 if (table == NULL) { 47 *code_ptr = errno; 48 return 0; 49 } 50 table[sci_idx+1] = (ss_data *) NULL; 51 table[sci_idx] = new_table; 52 53 new_table->subsystem_name = subsystem_name; 54 new_table->subsystem_version = version_string; 55 new_table->argv = (char **)NULL; 56 new_table->current_request = (char *)NULL; 57 new_table->info_dirs = (char **)malloc(sizeof(char *)); 58 *new_table->info_dirs = (char *)NULL; 59 new_table->info_ptr = info_ptr; 60 new_table->prompt = malloc((unsigned)strlen(subsystem_name)+4); 61 strcpy(new_table->prompt, subsystem_name); 62 strcat(new_table->prompt, ": "); 63 #ifdef silly 64 new_table->abbrev_info = ss_abbrev_initialize("/etc/passwd", code_ptr); 65 #else 66 new_table->abbrev_info = NULL; 67 #endif 68 new_table->flags.escape_disabled = 0; 69 new_table->flags.abbrevs_disabled = 0; 70 new_table->rqt_tables = 71 (ss_request_table **) calloc(2, sizeof(ss_request_table *)); 72 *(new_table->rqt_tables) = request_table_ptr; 73 *(new_table->rqt_tables+1) = (ss_request_table *) NULL; 74 75 new_table->readline_handle = 0; 76 new_table->readline_shutdown = 0; 77 new_table->readline = 0; 78 new_table->add_history = 0; 79 new_table->redisplay = 0; 80 new_table->rl_completion_matches = 0; 81 _ss_table = table; 82 #if defined(HAVE_DLOPEN) && defined(SHARED_ELF_LIB) 83 ss_get_readline(sci_idx); 84 #endif 85 return(sci_idx); 86 } 87 88 void 89 ss_delete_invocation(int sci_idx) 90 { 91 register ss_data *t; 92 int ignored_code; 93 94 t = ss_info(sci_idx); 95 free(t->prompt); 96 free(t->rqt_tables); 97 while(t->info_dirs[0] != (char *)NULL) 98 ss_delete_info_dir(sci_idx, t->info_dirs[0], &ignored_code); 99 free(t->info_dirs); 100 #if defined(HAVE_DLOPEN) && defined(SHARED_ELF_LIB) 101 if (t->readline_shutdown) 102 (*t->readline_shutdown)(t); 103 #endif 104 free(t); 105 } 106
