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