| 1 | static char sccsid[] = "@(#)netrm.c 4.2 (Berkeley) %G%"; |
| 2 | |
| 3 | # include "defs.h" |
| 4 | /* sccs id variable */ |
| 5 | static char *netrm_sid = "@(#)netrm.c 1.2"; |
| 6 | |
| 7 | |
| 8 | /* |
| 9 | * netrm - remove an entry from the network queue. |
| 10 | * |
| 11 | * first does a creat to truncate the file to zero length in |
| 12 | * case it is being sent. (this stops the daemon!) Next the |
| 13 | * file is removed. |
| 14 | * must be setuid root |
| 15 | */ |
| 16 | |
| 17 | char path[] = NETRMPATH; |
| 18 | char pathname[]= NETRMNAME; |
| 19 | |
| 20 | int hisuid, hisgid; |
| 21 | static char visit[26]; |
| 22 | static struct stat statbuf; |
| 23 | |
| 24 | main(argc,argv) |
| 25 | char *argv[]; |
| 26 | { |
| 27 | int cnt, mach, i, all = 0; |
| 28 | |
| 29 | if (argc < 2) |
| 30 | { |
| 31 | printf("usage: netrm [-] file1 file2 ... filen\n"); |
| 32 | exit(EX_USAGE); |
| 33 | } |
| 34 | |
| 35 | hisuid = getuid(); |
| 36 | hisuid = uidmask(hisuid); |
| 37 | hisgid = getgid(); |
| 38 | |
| 39 | if(argv[1][0] == '-'){ |
| 40 | all++; |
| 41 | argv++; |
| 42 | argc--; |
| 43 | } |
| 44 | cnt = 0; |
| 45 | |
| 46 | while (++cnt < argc)rmfile(argv[cnt]); |
| 47 | if(all){ |
| 48 | visit[chtoinx(local)] = 1; /* skip this machine */ |
| 49 | for(i = 0; i < MAXINX; i++) |
| 50 | if((mach = gothru(local,inxtoch(i))) |
| 51 | && !visit[chtoinx(mach)]){ |
| 52 | visit[chtoinx(mach)] = 1; |
| 53 | senddir[strlen(senddir)-1] = mach; |
| 54 | if(chdir(senddir) < 0) |
| 55 | continue; |
| 56 | pdir(senddir); |
| 57 | } |
| 58 | } |
| 59 | } |
| 60 | static pdir(str) |
| 61 | char *str; { |
| 62 | DIR *df; |
| 63 | register struct direct *dp; |
| 64 | df = opendir(str); |
| 65 | if(df == NULL){ |
| 66 | perror(str); |
| 67 | exit(EX_OSFILE); |
| 68 | } |
| 69 | while((dp = readdir(df)) != NULL){ |
| 70 | if(dp->d_name[0] != 'd' |
| 71 | || dp->d_name[1] != 'f' |
| 72 | || stat(dp->d_name,&statbuf) < 0) |
| 73 | continue; |
| 74 | if(guid(statbuf.st_uid,statbuf.st_gid) != hisuid) |
| 75 | continue; |
| 76 | /* kludge in file name */ |
| 77 | dp->d_name[3] = dp->d_name[2]; |
| 78 | rmfile(dp->d_name+3); |
| 79 | } |
| 80 | closedir(df); |
| 81 | } |
| 82 | rmfile(str) |
| 83 | char *str; |
| 84 | { |
| 85 | register char *ap, *cp; |
| 86 | int tt; |
| 87 | char *ostr,*rem,buf[20]; |
| 88 | ostr = str; |
| 89 | if(str[0] != 'd' || str[1] != 'f' || str[3] != 'a'){ |
| 90 | strcpy(buf+3,str); |
| 91 | buf[0] = 'd'; |
| 92 | buf[1] = 'f'; |
| 93 | buf[2] = str[0]; |
| 94 | buf[3] = 'a'; |
| 95 | str = buf; |
| 96 | } |
| 97 | cp = path; |
| 98 | ap = pathname; |
| 99 | while (*ap++ = *cp++); |
| 100 | cp = pathname + strlen(pathname) - 10; |
| 101 | while(*cp++ != 'f'); |
| 102 | cp--; |
| 103 | cp--; |
| 104 | rem = cp; |
| 105 | ap = str; |
| 106 | while(*cp != '\0' && (*cp++ = *ap++)); |
| 107 | pathname[strlen(pathname) - 11] = str[2]; /* set dir for mach */ |
| 108 | |
| 109 | if (stat(pathname,&statbuf) < 0) { |
| 110 | perror(ostr); |
| 111 | return; |
| 112 | } |
| 113 | |
| 114 | tt = guid(statbuf.st_uid,statbuf.st_gid); |
| 115 | if(tt != hisuid && hisuid != 0) { |
| 116 | printf("%s: Permission Denied\n",ostr); |
| 117 | return; |
| 118 | } |
| 119 | |
| 120 | printf("removing file %s\n",ostr); |
| 121 | creat(pathname,0600); |
| 122 | unlink(pathname); |
| 123 | *rem = 'c'; |
| 124 | unlink(pathname); |
| 125 | } |