mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
521 lines
9.8 KiB
C
521 lines
9.8 KiB
C
/*
|
|
* manpath.c
|
|
*
|
|
* Copyright (c) 1990, 1991, John W. Eaton.
|
|
*
|
|
* You may distribute under the terms of the GNU General Public
|
|
* License as specified in the file COPYING that comes with the man
|
|
* distribution.
|
|
*
|
|
* John W. Eaton
|
|
* jwe@che.utexas.edu
|
|
* Department of Chemical Engineering
|
|
* The University of Texas at Austin
|
|
* Austin, Texas 78712
|
|
*/
|
|
|
|
#define MANPATH_MAIN
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include "config.h"
|
|
#include "manpath.h"
|
|
#include "gripes.h"
|
|
|
|
#ifdef STDC_HEADERS
|
|
#include <stdlib.h>
|
|
#else
|
|
extern int fprintf ();
|
|
extern int strcmp ();
|
|
extern int strncmp ();
|
|
extern char *memcpy ();
|
|
extern char *getenv();
|
|
extern char *malloc();
|
|
extern void free ();
|
|
extern int exit ();
|
|
#endif
|
|
|
|
extern char *strdup ();
|
|
extern int is_directory ();
|
|
|
|
#ifndef MAIN
|
|
extern int debug;
|
|
#endif
|
|
|
|
#ifdef MAIN
|
|
|
|
#ifndef STDC_HEADERS
|
|
extern char *strcpy ();
|
|
extern int fflush ();
|
|
#endif
|
|
|
|
char *prognam;
|
|
int debug;
|
|
|
|
/*
|
|
* Examine user's PATH and print a reasonable MANPATH.
|
|
*/
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
int c;
|
|
int quiet;
|
|
char *mp;
|
|
extern int getopt ();
|
|
extern char *mkprogname ();
|
|
void usage ();
|
|
char *manpath ();
|
|
|
|
quiet = 1;
|
|
|
|
prognam = mkprogname (argv[0]);
|
|
|
|
while ((c = getopt (argc, argv, "dhq?")) != EOF)
|
|
{
|
|
switch (c)
|
|
{
|
|
case 'd':
|
|
debug++;
|
|
break;
|
|
case 'q':
|
|
quiet = 0;
|
|
break;
|
|
case '?':
|
|
case 'h':
|
|
default:
|
|
usage();
|
|
break;
|
|
}
|
|
}
|
|
|
|
mp = manpath (quiet);
|
|
|
|
fprintf (stdout, "%s\n", mp);
|
|
fflush (stdout);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
usage ()
|
|
{
|
|
fprintf (stderr, "usage: %s [-q]\n", prognam);
|
|
exit (1);
|
|
}
|
|
#endif /* MAIN */
|
|
|
|
/*
|
|
* If the environment variable MANPATH is set, return it.
|
|
* If the environment variable PATH is set and has a nonzero length,
|
|
* try to determine the corresponding manpath, otherwise, return the
|
|
* default manpath.
|
|
*
|
|
* The manpath.config file is used to map system wide /bin directories
|
|
* to top level man page directories.
|
|
*
|
|
* For directories which are in the user's path but not in the
|
|
* manpath.config file, see if there is a subdirectory `man' or `MAN'.
|
|
* If so, add that directory to the path. Example: user has
|
|
* $HOME/bin in his path and the directory $HOME/bin/man exists -- the
|
|
* directory $HOME/bin/man will be added to the manpath.
|
|
*/
|
|
char *
|
|
manpath (perrs)
|
|
register int perrs;
|
|
{
|
|
register int len;
|
|
register char *manpathlist;
|
|
register char *path;
|
|
int get_dirlist ();
|
|
char *def_path ();
|
|
char *get_manpath ();
|
|
|
|
if (get_dirlist ())
|
|
gripe_reading_mp_config ();
|
|
|
|
if ((manpathlist = getenv ("MANPATH")) != NULL)
|
|
/*
|
|
* This must be it.
|
|
*/
|
|
{
|
|
if (perrs)
|
|
fprintf (stderr, "(Warning: MANPATH environment variable set)\n");
|
|
return strdup (manpathlist);
|
|
}
|
|
else if ((path = getenv ("PATH")) == NULL)
|
|
/*
|
|
* Things aren't going to work well, but hey...
|
|
*/
|
|
{
|
|
if (perrs)
|
|
fprintf (stderr, "Warning: path not set\n");
|
|
return def_path (perrs);
|
|
}
|
|
else
|
|
{
|
|
if ((len = strlen (path)) == 0)
|
|
/*
|
|
* Things aren't going to work well here either...
|
|
*/
|
|
{
|
|
if (perrs)
|
|
fprintf (stderr, "Warning: path set but has zero length\n");
|
|
return def_path (perrs);
|
|
}
|
|
return get_manpath (perrs, path);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the list of bin directories and the corresponding man
|
|
* directories from the manpath.config file.
|
|
*
|
|
* This is ugly.
|
|
*/
|
|
int
|
|
get_dirlist ()
|
|
{
|
|
int i;
|
|
char *bp;
|
|
char *p;
|
|
char buf[BUFSIZ];
|
|
DIRLIST *dlp = list;
|
|
FILE *config;
|
|
|
|
if ((config = fopen (config_file, "r")) == NULL)
|
|
gripe_getting_mp_config (config_file);
|
|
|
|
while ((bp = fgets (buf, BUFSIZ, config)) != NULL)
|
|
{
|
|
while (*bp && (*bp == ' ' || *bp == '\t'))
|
|
bp++;
|
|
|
|
if (*bp == '#' || *bp == '\n')
|
|
continue;
|
|
|
|
if (!strncmp ("MANBIN", bp, 6))
|
|
continue;
|
|
|
|
if (!strncmp ("MANDATORY_MANPATH", bp, 17))
|
|
{
|
|
if ((p = strchr (bp, ' ')) == NULL)
|
|
if ((p = strchr (bp, '\t')) == NULL)
|
|
return -1;
|
|
|
|
bp = p;
|
|
|
|
dlp->mandatory = 1;
|
|
|
|
while (*bp && *bp != '\n' && (*bp == ' ' || *bp == '\t'))
|
|
bp++;
|
|
|
|
i = 0;
|
|
while (*bp && *bp != '\n' && *bp != ' ' && *bp != '\t')
|
|
dlp->mandir[i++] = *bp++;
|
|
dlp->mandir[i] = '\0';
|
|
|
|
if (debug)
|
|
fprintf (stderr, "found mandatory man directory %s\n",
|
|
dlp->mandir);
|
|
}
|
|
else if (!strncmp ("MANPATH_MAP", bp, 11))
|
|
{
|
|
if ((p = strchr (bp, ' ')) == NULL)
|
|
if ((p = strchr (bp, '\t')) == NULL)
|
|
return -1;
|
|
|
|
bp = p;
|
|
|
|
dlp->mandatory = 0;
|
|
|
|
while (*bp && *bp != '\n' && (*bp == ' ' || *bp == '\t'))
|
|
bp++;
|
|
|
|
i = 0;
|
|
while (*bp && *bp != '\n' && *bp != ' ' && *bp != '\t')
|
|
dlp->bin[i++] = *bp++;
|
|
dlp->bin[i] = '\0';
|
|
|
|
while (*bp && *bp != '\n' && (*bp == ' ' || *bp == '\t'))
|
|
bp++;
|
|
|
|
i = 0;
|
|
while (*bp && *bp != '\n' && *bp != ' ' && *bp != '\t')
|
|
dlp->mandir[i++] = *bp++;
|
|
dlp->mandir[i] = '\0';
|
|
|
|
if (debug)
|
|
fprintf (stderr, "found manpath map %s --> %s\n",
|
|
dlp->bin, dlp->mandir);
|
|
}
|
|
else
|
|
{
|
|
gripe_reading_mp_config ();
|
|
}
|
|
dlp++;
|
|
}
|
|
|
|
dlp->bin[0] = '\0';
|
|
dlp->mandir[0] = '\0';
|
|
dlp->mandatory = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Construct the default manpath. This picks up mandatory manpaths
|
|
* only.
|
|
*/
|
|
char *
|
|
def_path (perrs)
|
|
int perrs;
|
|
{
|
|
register int len;
|
|
register char *manpathlist, *p;
|
|
register DIRLIST *dlp;
|
|
|
|
len = 0;
|
|
dlp = list;
|
|
while (dlp->mandatory != 0)
|
|
{
|
|
len += strlen (dlp->mandir) + 1;
|
|
dlp++;
|
|
}
|
|
|
|
manpathlist = (char *) malloc (len);
|
|
if (manpathlist == NULL)
|
|
gripe_alloc (len, "manpathlist");
|
|
|
|
*manpathlist = '\0';
|
|
|
|
dlp = list;
|
|
p = manpathlist;
|
|
while (dlp->mandatory != 0)
|
|
{
|
|
int status;
|
|
char *path = dlp->mandir;
|
|
|
|
status = is_directory(path);
|
|
|
|
if (status < 0 && perrs)
|
|
{
|
|
fprintf (stderr, "Warning: couldn't stat file %s!\n", path);
|
|
}
|
|
else if (status == 0 && perrs)
|
|
{
|
|
fprintf (stderr, "Warning: standard directory %s doesn't exist!\n",
|
|
path);
|
|
}
|
|
else if (status == 1)
|
|
{
|
|
len = strlen (path);
|
|
memcpy (p, path, len);
|
|
p += len;
|
|
*p++ = ':';
|
|
dlp++;
|
|
}
|
|
}
|
|
|
|
p[-1] = '\0';
|
|
|
|
return manpathlist;
|
|
}
|
|
|
|
/*
|
|
* For each directory in the user's path, see if it is one of the
|
|
* directories listed in the manpath.config file. If so, and it is
|
|
* not already in the manpath, add it. If the directory is not listed
|
|
* in the manpath.config file, see if there is a subdirectory `man' or
|
|
* `MAN'. If so, and it is not already in the manpath, add it.
|
|
* Example: user has $HOME/bin in his path and the directory
|
|
* $HOME/bin/man exists -- the directory $HOME/bin/man will be added
|
|
* to the manpath.
|
|
*/
|
|
char *
|
|
get_manpath (perrs, path)
|
|
register int perrs;
|
|
register char *path;
|
|
{
|
|
register int len;
|
|
register char *tmppath;
|
|
register char *t;
|
|
register char *p;
|
|
register char **lp;
|
|
register char *end;
|
|
register char *manpathlist;
|
|
register DIRLIST *dlp;
|
|
void add_dir_to_list ();
|
|
char *has_subdirs ();
|
|
|
|
tmppath = strdup (path);
|
|
|
|
for (p = tmppath; ; p = end+1)
|
|
{
|
|
if (end = strchr(p, ':'))
|
|
*end = '\0';
|
|
|
|
if (debug)
|
|
fprintf (stderr, "\npath directory %s ", p);
|
|
|
|
/*
|
|
* The directory we're working on is in the config file.
|
|
* If we haven't added it to the list yet, do.
|
|
*/
|
|
for (dlp = list; dlp->mandir[0] != '\0'; dlp++)
|
|
if (dlp->bin[0] != '\0' && !strcmp (p, dlp->bin))
|
|
{
|
|
if (debug)
|
|
fprintf (stderr, "is in the config file\n");
|
|
|
|
add_dir_to_list (tmplist, dlp->mandir, perrs);
|
|
goto found;
|
|
}
|
|
|
|
/*
|
|
* The directory we're working on isn't in the config file. See
|
|
* if it has man or MAN subdirectories. If so, and it hasn't
|
|
* been added to the list, do.
|
|
*/
|
|
if (debug)
|
|
fprintf (stderr, "is not in the config file\n");
|
|
|
|
t = has_subdirs (p);
|
|
if (t != NULL)
|
|
{
|
|
if (debug)
|
|
fprintf (stderr, "but it does have a man or MAN subdirectory\n");
|
|
|
|
add_dir_to_list (tmplist, t, perrs);
|
|
free (t);
|
|
}
|
|
else
|
|
{
|
|
if (debug)
|
|
fprintf (stderr, "and doesn't have man or MAN subdirectories\n");
|
|
}
|
|
|
|
found:
|
|
|
|
if (!end)
|
|
break;
|
|
}
|
|
|
|
if (debug)
|
|
fprintf (stderr, "\nadding mandatory man directories\n\n");
|
|
|
|
dlp = list;
|
|
while (dlp->mandatory != 0)
|
|
{
|
|
add_dir_to_list (tmplist, dlp->mandir, perrs);
|
|
dlp++;
|
|
}
|
|
|
|
len = 0;
|
|
lp = tmplist;
|
|
while (*lp != NULL)
|
|
{
|
|
len += strlen (*lp) + 1;
|
|
lp++;
|
|
}
|
|
|
|
manpathlist = (char *) malloc (len);
|
|
if (manpathlist == NULL)
|
|
gripe_alloc (len, "manpathlist");
|
|
|
|
*manpathlist = '\0';
|
|
|
|
lp = tmplist;
|
|
p = manpathlist;
|
|
while (*lp != NULL)
|
|
{
|
|
len = strlen (*lp);
|
|
memcpy (p, *lp, len);
|
|
p += len;
|
|
*p++ = ':';
|
|
lp++;
|
|
}
|
|
|
|
p[-1] = '\0';
|
|
|
|
return manpathlist;
|
|
}
|
|
|
|
/*
|
|
* Add a directory to the manpath list if it isn't already there.
|
|
*/
|
|
void
|
|
add_dir_to_list (lp, dir, perrs)
|
|
char **lp;
|
|
char *dir;
|
|
int perrs;
|
|
{
|
|
extern char *strdup ();
|
|
int status;
|
|
|
|
while (*lp != NULL)
|
|
{
|
|
if (!strcmp (*lp, dir))
|
|
{
|
|
if (debug)
|
|
fprintf (stderr, "%s is already in the manpath\n", dir);
|
|
return;
|
|
}
|
|
lp++;
|
|
}
|
|
/*
|
|
* Not found -- add it.
|
|
*/
|
|
status = is_directory(dir);
|
|
|
|
if (status < 0 && perrs)
|
|
{
|
|
fprintf (stderr, "Warning: couldn't stat file %s!\n", dir);
|
|
}
|
|
else if (status == 0 && perrs)
|
|
{
|
|
fprintf (stderr, "Warning: %s isn't a directory!\n", dir);
|
|
}
|
|
else if (status == 1)
|
|
{
|
|
if (debug)
|
|
fprintf (stderr, "adding %s to manpath\n", dir);
|
|
|
|
*lp = strdup (dir);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check to see if the current directory has man or MAN
|
|
* subdirectories.
|
|
*/
|
|
char *
|
|
has_subdirs (p)
|
|
register char *p;
|
|
{
|
|
int len;
|
|
register char *t;
|
|
|
|
len = strlen (p);
|
|
|
|
t = (char *) malloc ((unsigned) len + 5);
|
|
if (t == NULL)
|
|
gripe_alloc (len+5, "p\n");
|
|
|
|
memcpy (t, p, len);
|
|
strcpy (t + len, "/man");
|
|
|
|
if (is_directory (t) == 1)
|
|
return t;
|
|
|
|
strcpy (t + len, "/MAN");
|
|
|
|
if (is_directory (t) == 1)
|
|
return t;
|
|
|
|
return NULL;
|
|
}
|