diff options
Diffstat (limited to 'lib/ss/invocation.c')
| -rw-r--r-- | lib/ss/invocation.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/lib/ss/invocation.c b/lib/ss/invocation.c new file mode 100644 index 0000000..7d7458a --- /dev/null +++ b/lib/ss/invocation.c @@ -0,0 +1,132 @@ +/* + * Copyright 1987, 1988 by MIT Student Information Processing Board + * + * Permission to use, copy, modify, and distribute this software and + * its documentation for any purpose is hereby granted, provided that + * the names of M.I.T. and the M.I.T. S.I.P.B. not be used in + * advertising or publicity pertaining to distribution of the software + * without specific, written prior permission. M.I.T. and the + * M.I.T. S.I.P.B. make no representations about the suitability of + * this software for any purpose. It is provided "as is" without + * express or implied warranty. + */ + +#include "config.h" +#ifdef HAS_STDLIB_H +#include <stdlib.h> +#endif +#include "ss_internal.h" +#define size sizeof(ss_data *) +#ifdef HAVE_DLOPEN +#include <dlfcn.h> +#endif +#include <errno.h> + +int ss_create_invocation(const char *subsystem_name, const char *version_string, + void *info_ptr, ss_request_table *request_table_ptr, + int *code_ptr) +{ + int sci_idx; + ss_data *new_table = NULL; + ss_data **table = NULL; + ss_data **realloc_table = NULL; + + *code_ptr = 0; + table = _ss_table; + new_table = (ss_data *) malloc(sizeof(ss_data)); + if (!new_table) + goto out; + memset(new_table, 0, sizeof(ss_data)); + + if (table == (ss_data **) NULL) { + table = (ss_data **) malloc(2 * size); + if (!table) + goto out; + table[0] = table[1] = (ss_data *)NULL; + } + initialize_ss_error_table (); + + for (sci_idx = 1; table[sci_idx] != (ss_data *)NULL; sci_idx++) + ; + realloc_table = (ss_data **) realloc((char *)table, + ((unsigned)sci_idx+2)*size); + if (realloc_table == NULL) + goto out; + + table = realloc_table; + table[sci_idx+1] = (ss_data *) NULL; + table[sci_idx] = new_table; + + new_table->subsystem_name = subsystem_name; + new_table->subsystem_version = version_string; + new_table->argv = (char **)NULL; + new_table->current_request = (char *)NULL; + new_table->info_dirs = (char **)malloc(sizeof(char *)); + if (!new_table->info_dirs) + goto out; + + *new_table->info_dirs = (char *)NULL; + new_table->info_ptr = info_ptr; + new_table->prompt = malloc((unsigned)strlen(subsystem_name)+4); + if (!new_table->prompt) + goto out; + + strcpy(new_table->prompt, subsystem_name); + strcat(new_table->prompt, ": "); +#ifdef silly + new_table->abbrev_info = ss_abbrev_initialize("/etc/passwd", code_ptr); +#else + new_table->abbrev_info = NULL; +#endif + new_table->flags.escape_disabled = 0; + new_table->flags.abbrevs_disabled = 0; + new_table->rqt_tables = + (ss_request_table **) calloc(2, sizeof(ss_request_table *)); + if (!new_table->rqt_tables) + goto out; + + *(new_table->rqt_tables) = request_table_ptr; + *(new_table->rqt_tables+1) = (ss_request_table *) NULL; + + new_table->readline_handle = 0; + new_table->readline_shutdown = 0; + new_table->readline = 0; + new_table->add_history = 0; + new_table->redisplay = 0; + new_table->rl_completion_matches = 0; + _ss_table = table; +#if defined(HAVE_DLOPEN) && defined(SHARED_ELF_LIB) + ss_get_readline(sci_idx); +#endif + return(sci_idx); + +out: + if (new_table) { + free(new_table->prompt); + free(new_table->info_dirs); + } + free(new_table); + free(table); + *code_ptr = ENOMEM; + return 0; + +} + +void +ss_delete_invocation(int sci_idx) +{ + register ss_data *t; + int ignored_code; + + t = ss_info(sci_idx); + free(t->prompt); + free(t->rqt_tables); + while(t->info_dirs[0] != (char *)NULL) + ss_delete_info_dir(sci_idx, t->info_dirs[0], &ignored_code); + free(t->info_dirs); +#if defined(HAVE_DLOPEN) && defined(SHARED_ELF_LIB) + if (t->readline_shutdown) + (*t->readline_shutdown)(t); +#endif + free(t); +} |