lib/ss/invocation.c

   1 /*
   2  * Copyright 1987, 1988 by MIT Student Information Processing Board
   3  *
   4  * For copyright information, see copyright.h.
   5  */
   6
   7 #ifdef HAS_STDLIB_H
   8 #include <stdlib.h>
   9 #endif
  10 #include "ss_internal.h"
  11 #include "copyright.h"
  12 #define size    sizeof(ss_data *)
  13
  14 int ss_create_invocation(subsystem_name, version_string, info_ptr,
  15                          request_table_ptr, code_ptr)
  16         char *subsystem_name, *version_string;
  17         char *info_ptr;
  18         ss_request_table *request_table_ptr;
  19         int *code_ptr;
  20 {
  21         register int sci_idx;
  22         register ss_data *new_table;
  23         register ss_data **table;
  24
  25         *code_ptr = 0;
  26         table = _ss_table;
  27         new_table = (ss_data *) malloc(sizeof(ss_data));
  28
  29         if (table == (ss_data **) NULL) {
  30                 table = (ss_data **) malloc(2 * size);
  31                 table[0] = table[1] = (ss_data *)NULL;
  32         }
  33         initialize_ss_error_table ();
  34
  35         for (sci_idx = 1; table[sci_idx] != (ss_data *)NULL; sci_idx++)
  36                 ;
  37         table = (ss_data **) realloc((char *)table,
  38                                      ((unsigned)sci_idx+2)*size);
  39         table[sci_idx+1] = (ss_data *) NULL;
  40         table[sci_idx] = new_table;
  41
  42         new_table->subsystem_name = subsystem_name;
  43         new_table->subsystem_version = version_string;
  44         new_table->argv = (char **)NULL;
  45         new_table->current_request = (char *)NULL;
  46         new_table->info_dirs = (char **)malloc(sizeof(char *));
  47         *new_table->info_dirs = (char *)NULL;
  48         new_table->info_ptr = info_ptr;
  49         new_table->prompt = malloc((unsigned)strlen(subsystem_name)+4);
  50         strcpy(new_table->prompt, subsystem_name);
  51         strcat(new_table->prompt, ":  ");
  52 #ifdef silly
  53         new_table->abbrev_info = ss_abbrev_initialize("/etc/passwd", code_ptr);
  54 #else
  55         new_table->abbrev_info = NULL;
  56 #endif
  57         new_table->flags.escape_disabled = 0;
  58         new_table->flags.abbrevs_disabled = 0;
  59         new_table->rqt_tables =
  60                 (ss_request_table **) calloc(2, sizeof(ss_request_table *));
  61         *(new_table->rqt_tables) = request_table_ptr;
  62         *(new_table->rqt_tables+1) = (ss_request_table *) NULL;
  63         _ss_table = table;
  64         return(sci_idx);
  65 }
  66
  67 void
  68 ss_delete_invocation(sci_idx)
  69         int sci_idx;
  70 {
  71         register ss_data *t;
  72         int ignored_code;
  73
  74         t = ss_info(sci_idx);
  75         free(t->prompt);
  76         free((char *)t->rqt_tables);
  77         while(t->info_dirs[0] != (char *)NULL)
  78                 ss_delete_info_dir(sci_idx, t->info_dirs[0], &ignored_code);
  79         free((char *)t->info_dirs);
  80         free((char *)t);
  81 }