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
ss_create_invocation(subsystem_name,version_string,info_ptr,request_table_ptr,code_ptr)23 int 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
85 void
ss_delete_invocation(sci_idx)86 ss_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