Pathalias lookup and utilities for 4.2BSD.
Stephen J. Muir
stephen at dcl-cs.UUCP
Thu Oct 10 01:52:25 AEST 1985
Here are three utilities for those sites running the "pathalias" program to do
the following:
1) Look up the database and print out the path corresponding to any UUCP site.
2) Generate a database where the UUCP site is the key and the filename
containing the description of that site is the data.
3) Look up the database built by program (2).
The programs are called "findpath", "findfile" and "mapfile" respectively.
I am sorry that I haven't had time to produce manual pages but I find these
programs essential for those sites who use "pathalias".
----------------------------------- Cut Here ----------------------------------
#!/bin/sh
echo 'Start of pack.out, part 01 of 01:'
echo 'x - Makefile'
sed 's/^X//' > Makefile << '/'
Xall: mapfile findpath findfile
X
Xmapfile: mapfile.c
X cc -O mapfile.c -o mapfile -ldbm -s
X
Xfindpath: findpath.c
X cc -O findpath.c -o findpath -ldbm -s
X
Xfindfile: findfile.c psystem.c
X cc -O findfile.c psystem.c -o findfile -ldbm -s
/
echo 'x - findfile.c'
sed 's/^X//' > findfile.c << '/'
X/* Written by Stephen J. Muir, Computing Dept., Lancaster University */
X
X# include <stdio.h>
X# include <strings.h>
X
Xtypedef struct
X { char *dptr;
X int dsize;
X } datum;
X
Xextern datum fetch ();
X
Xchar *findpath = "exec /usr/local/bin/findpath -", buf [4096];
X
Xint interactive, wpfd = -1, rpfd, newline;
X
XFILE *frpfd;
X
Xdatum key, value;
X
Xchar *
Xgetline (prompt)
X char *prompt;
X { register char c, *cp;
X register int i;
X cp = &buf [0];
X if (interactive && prompt)
X { printf (prompt);
X fflush (stdout);
X }
X while ((i = getchar ()) != EOF)
X { if ((c = i & 0377) == '\n' || c == '\0')
X { newline = c == '\n';
X *cp = '\0';
X return (buf);
X }
X *cp++ = c;
X }
X return (0);
X }
X
X/*ARGSUSED*/
Xmain (argc, argv, envp)
X char *argv [], *envp [];
X { register char *cp;
X if (argc == 1)
X ++interactive;
X dbminit ("/usr/local/lib/pfile");
X while ((key.dptr = getline ("USENET site: ")) != 0)
X { key.dsize = strlen (key.dptr);
X value = fetch (key);
X if (value.dsize)
X { if (interactive)
X printf ("%s\n", value.dptr);
X else
X { if (newline)
X *(value.dptr + value.dsize - 1) = '\n';
X write (1, value.dptr, value.dsize);
X }
X }
X else
X { if (interactive)
X printf ("site may be hidden ... ");
X if (wpfd == -1)
X { if (interactive)
X { printf ("calling up \"findpath\" ... ");
X fflush (stdout);
X }
X if (psystem (findpath, &wpfd, &rpfd, 0, 0) == -1)
X { perror (findpath + 5);
X exit (1);
X }
X frpfd = fdopen (rpfd, "r");
X }
X write (wpfd, key.dptr, key.dsize + 1);
X cp = &buf [0];
X while ((*cp++ = (fgetc (frpfd) & 0377)) != '\0');
X if (buf [0])
X { if (interactive)
X printf ("returns: %s\n", buf);
X do
X { if (cp = rindex (buf, '!'))
X { *cp++ = '\0';
X if (!strcmp (cp, "%s"))
X continue;
X if (!strncmp (cp, "%s@", 3))
X cp += 3;
X }
X else
X cp = &buf [0];
X if (interactive)
X printf ("looking up: %s\n", cp);
X key.dsize = strlen (key.dptr = cp);
X value = fetch (key);
X if (value.dsize)
X { if (interactive)
X printf ("%s\n", value.dptr);
X else
X { if (newline)
X *(value.dptr + value.dsize - 1) = '\n';
X write (1, value.dptr, value.dsize);
X }
X break;
X }
X }
X while (cp != &buf [0]);
X continue;
X }
X fflush (stdout);
X if (interactive)
X fprintf (stderr, "No such site\n");
X else
X write (1, newline ? "\n" : "\0", 1);
X }
X }
X if (interactive)
X putchar ('\n');
X exit (0);
X }
/
echo 'x - findpath.c'
sed 's/^X//' > findpath.c << '/'
X/* Written by Stephen J. Muir, Computing Dept., Lancaster University */
X
X# include <stdio.h>
X# include <strings.h>
X
Xtypedef struct
X { char *dptr;
X int dsize;
X } datum;
X
Xextern datum fetch ();
X
Xchar buf [4096];
X
Xint interactive, newline;
X
Xdatum key, value;
X
Xchar *
Xgetline (prompt)
X char *prompt;
X { register char c, *cp;
X register int i;
X cp = &buf [0];
X if (interactive && prompt)
X { printf (prompt);
X fflush (stdout);
X }
X while ((i = getchar ()) != EOF)
X { if ((c = i & 0377) == '\n' || c == '\0')
X { newline = c == '\n';
X *cp = '\0';
X return (buf);
X }
X *cp++ = c;
X }
X return (0);
X }
X
X/*ARGSUSED*/
Xmain (argc, argv, envp)
X char *argv [], *envp [];
X { if (argc == 1)
X ++interactive;
X dbminit ("/usr/local/lib/palias");
X while ((key.dptr = getline ("USENET site: ")) != 0)
X { key.dsize = strlen (key.dptr) + 1;
X value = fetch (key);
X if (value.dsize)
X { if (interactive)
X printf ("%s\n", value.dptr);
X else
X { if (newline)
X *(value.dptr + value.dsize - 1) = '\n';
X write (1, value.dptr, value.dsize);
X }
X }
X else
X { if (interactive)
X fprintf (stderr, "No such site\n");
X else
X write (1, newline ? "\n" : "\0", 1);
X }
X }
X if (interactive)
X putchar ('\n');
X exit (0);
X }
/
echo 'x - mapfile.c'
sed 's/^X//' > mapfile.c << '/'
X/* Written by Stephen J. Muir, Computing Dept., Lancaster University */
X
X# include <sys/types.h>
X# include <sys/dir.h>
X# include <sys/file.h>
X# include <stdio.h>
X# include <strings.h>
X
Xtypedef struct
X { char *dptr;
X int dsize;
X } datum;
X
Xchar *filename, *mapdir = "/usr/spool/uucpmaps",
X *database = "/usr/local/lib/pfile", buf [4096];
X
Xstruct direct *curfile;
X
Xdatum key, content;
X
XDIR *mapdirp;
X
XFILE *ffd;
X
X/*ARGSUSED*/
Xmain (argc, argv, envp)
X char *argv [], *envp [];
X { register char *cp;
X register int fd;
X if (chdir (mapdir) == -1 || (mapdirp = opendir (".")) == 0)
X { perror (mapdir);
X exit (1);
X }
X strcpy (buf, database);
X strcat (buf, ".pag");
X if ((fd = open (buf, O_CREAT|O_TRUNC, 0666)) == -1)
X { perror (buf);
X exit (1);
X }
X close (fd);
X strcpy (buf, database);
X strcat (buf, ".dir");
X if ((fd = open (buf, O_CREAT|O_TRUNC, 0666)) == -1)
X { perror (buf);
X exit (1);
X }
X dbminit (database);
X while (curfile = readdir (mapdirp))
X { filename = curfile->d_name;
X if (*filename == '.' || index (filename, '.') == 0)
X continue;
X if ((ffd = fopen (filename, "r")) == 0)
X { perror (filename);
X continue;
X }
X while (fgets (buf, sizeof (buf), ffd) != NULL)
X { if (strncmp (buf, "#N", 2))
X continue;
X for (cp = &buf [2]; *cp != '\n' && *cp != '\0'; ++cp);
X while (*cp == '\n' || *cp == '\0' || *cp == ' ' || *cp == '\t')
X *cp-- = '\0';
X for (cp = &buf [2]; *cp == ' ' || *cp == '\t'; ++cp);
X key.dptr = cp;
X key.dsize = strlen (cp);
X content.dptr = filename;
X content.dsize = strlen (filename) + 1;
X if (store (key,content) == -1)
X { perror ("store()");
X exit (1);
X }
X }
X fclose (ffd);
X }
X exit (0);
X }
/
echo 'x - psystem.c'
sed 's/^X//' > psystem.c << '/'
X# include <signal.h>
X
Xint psyspid;
X
Xpsystem (com, fd0, fd1, fd2, child)
X char *com;
X int *fd0, *fd1, *fd2;
X void (*child) ();
X { int p0 [2], p1 [2], p2 [2];
X if (fd0 && pipe (p0) == -1)
X return (-1);
X if (fd1 && pipe (p1) == -1)
X { if (fd0)
X { close (p0 [0]);
X close (p0 [1]);
X }
X return (-1);
X }
X if (fd2 && pipe (p2) == -1)
X { if (fd0)
X { close (p0 [0]);
X close (p0 [1]);
X }
X if (fd1)
X { close (p1 [0]);
X close (p1 [1]);
X }
X return (-1);
X }
X while ((psyspid = fork ()) == -1);
X if (psyspid == 0)
X { if (fd0)
X { close (p0 [1]);
X dup2 (p0 [0], 0);
X close (p0 [0]);
X }
X if (fd1)
X { close (p1 [0]);
X dup2 (p1 [1], 1);
X close (p1 [1]);
X }
X if (fd2)
X { close (p2 [0]);
X dup2 (p2 [1], 2);
X close (p2 [1]);
X }
X signal (SIGQUIT, SIG_IGN);
X if (child)
X (*child) ();
X execl ("/bin/sh", "sh", "-c", com, 0);
X _exit (127);
X }
X if (fd0)
X { close (p0 [0]);
X *fd0 = p0 [1];
X }
X if (fd1)
X { close (p1 [1]);
X *fd1 = p1 [0];
X }
X if (fd2)
X { close (p2 [1]);
X *fd2 = p2 [0];
X }
X return (0);
X }
/
echo 'Part 01 of pack.out complete.'
exit
--
UUCP: ...!seismo!mcvax!ukc!dcl-cs!stephen
DARPA: stephen%lancs.comp at ucl-cs | Post: University of Lancaster,
JANET: stephen at uk.ac.lancs.comp | Department of Computing,
Phone: +44 524 65201 Ext. 4599 | Bailrigg, Lancaster, UK.
Project:Alvey ECLIPSE Distribution | LA1 4YR
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