Usenet 1994 October/usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso/misc/volume10/newsbreak

Text File | 1990-01-28 | 9KB | 299 lines

Newsgroups: comp.sources.misc
subject: v10i045: newsbreak.c; automate unpacking source and binary group postings
from: [e-mail] (Fred Walter)
Sender: [e-mail] (Brandon S. Allbery - comp.sources.misc)

Posting-number: Volume 10, Issue 45
Submitted-by: [e-mail] (Fred Walter)
Archive-name: newsbreak

Here is a program I've written to automate unpacking postings to
comp.sources.misc, comp.sources.unix, comp.sources.amiga, comp.binaries.amiga
and possibly other groups as well.

I typically use this by creating a subdirectory in /tmp, then copying all
the articles from /usr/spool/news/comp/whatever to my directory in /tmp.

Then I execute

newsbreak >& .newsbreak.out &

in my subdirectory in /tmp. After a while, all the postings that match the
accepted forms will be unpacked. I then look into the .newsbreak.out
file to see if any problems occured when unpacking.

    fred

------cut here and make my day--------------------------------
#! /bin/sh
# This file was wrapped with "dummyshar".  "sh" this file to extract.
# Contents:  newsbreak.c
echo extracting 'newsbreak.c'
if test -f 'newsbreak.c' -a -z "$1"; then echo Not overwriting 'newsbreak.c'; else
sed 's/^X//' << \EOF > 'newsbreak.c'
X/*
X * newsbreak.c (version 1.06)
X *
X * by G. R. Walter (Fred) December 30, 1988
X *
X * Description:
X *     Takes a series of files which are shar files (strips any
X *     garbage at the start of the shar file) that have been posted to
X *     comp.{sources|binaries}.* and feeds them through sh.
X *     After they have been fed through sh the original files are
X *     deleted. Then any uuencoded files are uudecoded, after which
X *     the uuencoded files are also deleted.
X *
X * NOTES:
X *     1) This program assumes that all necessary shar files are in the
X *        current directory. It attempts to not delete stuff if it can't
X *        handle it (like when not all the parts of a multi-part uuencoded
X *        file are available).
X *     2) When there are multiple parts to a uuencoded file, a maximum
X *        of 99 parts are currently handled.
X *
X * HISTORY:
X * 1.00 - original version
X * 1.01 - small enhancements/bug fixes
X * 1.02 - now handle .zu's with > 9 parts correctly
X * 1.03 - now check for ":\tshar\:Shell Archiver" when checking if a file
X *        is a shar archive
X *      - now handles files ending in .uu#
X * 1.04 - now check for ": run sh on this file to unbundle" when checking
X *        if a file is a shar archive
X * 1.05 - now check for "# This is a shell archive." when checking
X *        if a file is a shar archive
X *      - now prints out the version (and author name) when run
X * 1.06 - now check for "Archive-name:" to see what directory the
X *        resulting files should be put in. NOTE: any parts after
X *        a "part*" section in the path are not mkdir'ed
X *      - now handles files ending in .zuu#
X *      - now handles files ending in .uu# properly
X *      - now doesn't attempt to process files starting in "."
X *      - now prints some useful info (so you know what it is doing)
X *      - now check for "# After you unpack everything" when checking
X *        if a file is a shar archive
X *      - make sure I don't try to uudecode directories
X */
X
X#include <stdio.h>
X#include <ctype.h>
X#include <sys/types.h>
X#include <sys/dir.h>
X#include <sys/file.h>
X#include <sys/stat.h>
X
Xchar           *strcpy();
Xchar           *getwd();
X
Xmain()
X{
X    DIR            *dirp;
X    struct direct  *dp;
X
X    void            unshar();
X    void            uudecode();
X
X    fprintf(stderr, "newsbreak 1.06 by G. R. Walter\n");
X
X    /* unshar everything */
X    dirp = opendir(".");
X    for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp))
X    unshar(dp->d_name);
X    closedir(dirp);
X
X    /* uudecode everything */
X    dirp = opendir(".");
X    for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp))
X    uudecode(dp->d_name);
X    closedir(dirp);
X
X    exit(0);
X}
X
Xvoid
Xunshar(name)
X    char           *name;
X{
X    FILE           *fin;
X    FILE           *fout;
X    char            buf[200];
X    char            dir[200];
X    char            path[200];
X    char            tmp_path[200];
X    char           *p;
X
X    void            uudecode();
X
X    if (name[0] == '.')
X    return;
X
X    fprintf(stderr, "Attempting to unshar %s\n", name);
X    fin = fopen(name, "r");
X    if (fin == NULL)        /* file doesn't exist !? */
X    return;
X
X    strcpy(dir, ".");        /* initialize directory to use */
X    for (;;) {
X    if (fgets(buf, 200, fin) == NULL) {    /* not a shar file !? */
X        fclose(fin);
X        return;
X    }
X    if (strncmp(buf, "Archive-name:", 13) == 0) {    /* directory to use */
X        if (sscanf(buf, "Archive-name: %s", path) > 0) {
X        strcpy(dir, path);
X        tmp_path[0] = '\0';
X        fprintf(stderr, "Found Archive-name: %s\n", dir);
X        for (p = dir; *p != NULL; p++)
X            if (*p == '/') {
X            *p = NULL;
X            if (strncmp(p + 1, "part", 4) == 0)
X                break;
X            if (access(dir, F_OK) < 0)
X                if (mkdir(dir, 0777) < 0)
X                goto ABORT_ATTEMPT;
X            strcpy(tmp_path, path);
X            *p = '/';
X            }
X        if (access(dir, F_OK) < 0) {
X            if (mkdir(dir, 0777) < 0) {
X        ABORT_ATTEMPT:
X            fprintf(stderr, "Couldn't mkdir %s\n", dir);
X            fprintf(stderr, "Aborting this attempt\n");
X            if (tmp_path[0] != '\0')
X                (void) unlink(tmp_path);
X            fclose(fin);
X            return;
X            }
X        }
X        }
X    }
X    if ((strncmp(buf, "#!/bin/sh", 9) == 0)
X        || (strncmp(buf, "#! /bin/sh", 10) == 0)
X        || (strncmp(buf, "# This is a shell archive.", 26) == 0)
X        || (strncmp(buf, ":\tshar:\tShell Archiver", 22) == 0)
X        || (strncmp(buf, ": run sh on this file to unbundle", 33) == 0)
X        || (strncmp(buf, "# After you unpack everything", 29) == 0))
X        break;
X    }
X
X    sprintf(path, "%s/.unshar.temp.file", dir);
X    fout = fopen(path, "w");
X    while (fgets(buf, 200, fin) != NULL)
X    fprintf(fout, "%s", buf);
X    fclose(fout);
X    fclose(fin);
X
X    sprintf(buf, "cd %s; sh .unshar.temp.file", dir);
X    if (system(buf) == 0)
X    (void) unlink(name);
X
X    (void) unlink(path);
X}
X
Xvoid
Xuudecode(name)
X    char           *name;
X{
X    DIR            *dirp;
X    struct direct  *dp;
X    FILE           *file;
X    char            buf[200];
X    char            name_buf[200];
X    char            path[200];
X    char           *p;
X    struct stat     stat_buf;
X
X    if (name[0] == '.')
X    return;
X
X    if (stat(name, &stat_buf))
X    return;
X
X    if ((stat_buf.st_mode & S_IFDIR)) {
X    /* uudecode everything in this directory */
X    if (!getwd(path))
X        return;
X    if (chdir(name))
X        return;
X    dirp = opendir(".");
X    for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp))
X        uudecode(dp->d_name);
X    closedir(dirp);
X    (void) chdir(path);
X    return;
X    }
X    /* check if the file still exists */
X    file = fopen(name, "r");
X    if (file == NULL)
X    return;
X    fclose(file);
X
X    /* if the file ends in ".uue" or ".uu" or ".zuu" just uudecode it */
X    p = name + strlen(name) - 1;
X    if ((*p == 'e') && (*(p - 1) == 'u')) {
X    p -= 2;
X    if ((*p == 'u') && (*(p - 1) == '.')) {
X        sprintf(buf, "uudecode %s", name);
X        if (system(buf) == 0)
X        (void) unlink(name);
X    }
X    return;
X    }
X    if ((*p == 'u') && (*(p - 1) == 'u')) {
X    p -= 2;
X    if ((*p == '.') || ((*p == 'z') && (*(p - 1) == '.'))) {
X        sprintf(buf, "uudecode %s", name);
X        if (system(buf) == 0)
X        (void) unlink(name);
X    }
X    return;
X    }
X    /* handle ".zuu#", ".zu#" and ".uu#" where # is a number */
X    while (isdigit(*p))
X    p--;
X
X    if ((*p == 'u') && ((*(p - 1) == 'z') || (*(p - 1) == 'u')) &&
X    (*(p - 2) == '.')) {
X
X    if (*(p + 1) == '0') {
X        *(p + 1) = '\0';
X        sprintf(buf, "cat %s* | uudecode", name);
X    } else {
X        *(p + 1) = '\0';
X
X        sprintf(name_buf, "%s10", name);
X        file = fopen(name_buf, "r");
X        if (file == NULL) {
X        sprintf(buf, "cat %s? | uudecode", name);
X        } else {
X        fclose(file);
X        sprintf(buf, "cat %s? %s?? | uudecode", name, name);
X        }
X    }
X
X    if (system(buf) == 0) {
X        sprintf(buf, "rm %s*", name);
X        system(buf);
X    }
X    } else if ((*p == 'u') && (*(p - 1) == 'u') && (*(p - 2) == 'z') &&
X           (*(p - 3) == '.')) {
X    *(p + 1) = '\0';
X
X    sprintf(buf, "cat %s* | uudecode", name);
X    if (system(buf) == 0) {
X        sprintf(buf, "rm %s*", name);
X        system(buf);
X    }
X    }
X}
EOF
chars=`wc -c < 'newsbreak.c'`
if test $chars !=     6939; then echo 'newsbreak.c' is $chars characters, should be     6939 characters!; fi
fi
exit 0
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