0c8ea4d48c
<sys/dir.h> in applications. Maintained existing (inadequate) ifdefs for dir.h vs dirent.h in libdialog, amd and rarpd, but didn't add any new ones.
149 lines
3.4 KiB
C
149 lines
3.4 KiB
C
/*
|
|
* Copyright 1987, 1988 by MIT Student Information Processing Board
|
|
*
|
|
* For copyright info, see copyright.h.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/file.h>
|
|
#include <sys/wait.h>
|
|
#include <dirent.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include "ss_internal.h"
|
|
#include "copyright.h"
|
|
|
|
extern int errno;
|
|
|
|
void ss_help (argc, argv, sci_idx, info_ptr)
|
|
int argc;
|
|
char const * const *argv;
|
|
int sci_idx;
|
|
pointer info_ptr;
|
|
{
|
|
char buffer[MAXPATHLEN];
|
|
char const *request_name;
|
|
int code;
|
|
int fd, child;
|
|
register int idx;
|
|
register ss_data *info;
|
|
|
|
request_name = ss_current_request(sci_idx, &code);
|
|
if (code != 0) {
|
|
ss_perror(sci_idx, code, "");
|
|
return; /* no ss_abort_line, if invalid invocation */
|
|
}
|
|
if (argc == 1) {
|
|
ss_list_requests(argc, argv, sci_idx, info_ptr);
|
|
return;
|
|
}
|
|
else if (argc != 2) {
|
|
/* should do something better than this */
|
|
sprintf(buffer, "usage:\n\t%s [topic|command]\nor\t%s\n",
|
|
request_name, request_name);
|
|
ss_perror(sci_idx, 0, buffer);
|
|
return;
|
|
}
|
|
info = ss_info(sci_idx);
|
|
if (info->info_dirs == (char **)NULL) {
|
|
ss_perror(sci_idx, SS_ET_NO_INFO_DIR, (char *)NULL);
|
|
return;
|
|
}
|
|
if (info->info_dirs[0] == (char *)NULL) {
|
|
ss_perror(sci_idx, SS_ET_NO_INFO_DIR, (char *)NULL);
|
|
return;
|
|
}
|
|
for (idx = 0; info->info_dirs[idx] != (char *)NULL; idx++) {
|
|
(void) strcpy(buffer, info->info_dirs[idx]);
|
|
(void) strcat(buffer, "/");
|
|
(void) strcat(buffer, argv[1]);
|
|
(void) strcat(buffer, ".info");
|
|
if ((fd = open(&buffer[0], O_RDONLY, 0)) >= 0) goto got_it;
|
|
}
|
|
if ((fd = open(&buffer[0], O_RDONLY, 0)) < 0) {
|
|
char buf[MAXPATHLEN];
|
|
strcpy(buf, "No info found for ");
|
|
strcat(buf, argv[1]);
|
|
ss_perror(sci_idx, 0, buf);
|
|
return;
|
|
}
|
|
got_it:
|
|
switch (child = fork()) {
|
|
case -1:
|
|
ss_perror(sci_idx, errno, "Can't fork for pager");
|
|
return;
|
|
case 0:
|
|
(void) dup2(fd, 0); /* put file on stdin */
|
|
ss_page_stdin();
|
|
default:
|
|
(void) close(fd); /* what can we do if it fails? */
|
|
#ifndef POSIX
|
|
while (wait((union wait *)NULL) != child)
|
|
#else
|
|
while (wait((int *)NULL) != child)
|
|
#endif
|
|
{
|
|
/* do nothing if wrong pid */
|
|
};
|
|
}
|
|
}
|
|
|
|
void ss_add_info_dir(sci_idx, info_dir, code_ptr)
|
|
int sci_idx;
|
|
char *info_dir;
|
|
int *code_ptr;
|
|
{
|
|
register ss_data *info;
|
|
DIR *d;
|
|
int n_dirs;
|
|
register char **dirs;
|
|
|
|
info = ss_info(sci_idx);
|
|
if (info_dir == NULL && *info_dir) {
|
|
*code_ptr = SS_ET_NO_INFO_DIR;
|
|
return;
|
|
}
|
|
if ((d = opendir(info_dir)) == (DIR *)NULL) {
|
|
*code_ptr = errno;
|
|
return;
|
|
}
|
|
closedir(d);
|
|
dirs = info->info_dirs;
|
|
for (n_dirs = 0; dirs[n_dirs] != (char *)NULL; n_dirs++)
|
|
; /* get number of non-NULL dir entries */
|
|
dirs = (char **)realloc((char *)dirs,
|
|
(unsigned)(n_dirs + 2)*sizeof(char *));
|
|
if (dirs == (char **)NULL) {
|
|
info->info_dirs = (char **)NULL;
|
|
*code_ptr = errno;
|
|
return;
|
|
}
|
|
info->info_dirs = dirs;
|
|
dirs[n_dirs + 1] = (char *)NULL;
|
|
dirs[n_dirs] = malloc((unsigned)strlen(info_dir)+1);
|
|
strcpy(dirs[n_dirs], info_dir);
|
|
*code_ptr = 0;
|
|
}
|
|
|
|
void ss_delete_info_dir(sci_idx, info_dir, code_ptr)
|
|
int sci_idx;
|
|
char *info_dir;
|
|
int *code_ptr;
|
|
{
|
|
register char **i_d;
|
|
register char **info_dirs;
|
|
|
|
info_dirs = ss_info(sci_idx)->info_dirs;
|
|
for (i_d = info_dirs; *i_d; i_d++) {
|
|
if (!strcmp(*i_d, info_dir)) {
|
|
while (*i_d) {
|
|
*i_d = *(i_d+1);
|
|
i_d++;
|
|
}
|
|
*code_ptr = 0;
|
|
return;
|
|
}
|
|
}
|
|
*code_ptr = SS_ET_NO_INFO_DIR;
|
|
}
|