/* * Process a control file. */ void process(char *file) { FILE *cfp = NULL; int fd; if (!chk(file)) return; PRIV_START; fd = safe_open(file, O_RDONLY|O_NOFOLLOW, 0); PRIV_END; if (fd < 0 || (cfp = fdopen(fd, "r")) == NULL) { if (fd >= 0) close(fd); fatal("cannot open %s", file); } while (getcfline(cfp)) { switch (line[0]) { case 'U': /* unlink associated files */ if (strchr(line+1, '/') || strncmp(line+1, "df", 2)) break; do_unlink(line+1); } } (void)fclose(cfp); do_unlink(file); }
/* * Do the dirty work in checking */ int chk(char *file) { int *r, n, fd; char **u, *cp; FILE *cfp = NULL; /* * Check for valid cf file name (mostly checking current). */ if (strlen(file) < 7 || file[0] != 'c' || file[1] != 'f') return(0); if (all && (from == host || !strcmp(from, file+6))) return(1); /* * get the owner's name from the control file. */ PRIV_START; fd = safe_open(file, O_RDONLY|O_NOFOLLOW, 0); PRIV_END; if (fd < 0 || (cfp = fdopen(fd, "r")) == NULL) { if (fd >= 0) close(fd); return(0); } while (getcfline(cfp)) { if (line[0] == 'P') break; } (void)fclose(cfp); if (line[0] != 'P') return(0); if (users == 0 && requests == 0) return(!strcmp(file, current) && isowner(line+1, file)); /* * Check the request list */ for (n = 0, cp = file+3; isdigit(*cp); ) n = n * 10 + (*cp++ - '0'); for (r = requ; r < &requ[requests]; r++) if (*r == n && isowner(line+1, file)) return(1); /* * Check to see if it's in the user list */ for (u = user; u < &user[users]; u++) if (!strcmp(*u, line+1) && isowner(line+1, file)) return(1); return(0); }
/* * Process a lock file: collect the pid of the active * daemon and the file name of the active spool entry. * Return boolean indicating existence of a lock file. */ static int lockchk(char *s) { FILE *fp = NULL; int fd, i, n; /* NOTE: lock file is owned by root, not the user. */ PRIV_START; fd = safe_open(s, O_RDONLY|O_NOFOLLOW, 0); PRIV_END; if (fd < 0 || (fp = fdopen(fd, "r")) == NULL) { if (fd >= 0) close(fd); if (errno == EACCES) fatal("can't access lock file"); else return(0); } if (!getcfline(fp)) { (void)fclose(fp); return(0); /* no daemon present */ } cur_daemon = atoi(line); if (kill(cur_daemon, 0) < 0 && errno != EPERM) { (void)fclose(fp); return(0); /* no daemon present */ } for (i = 1; (n = fread(current, sizeof(char), sizeof(current), fp)) <= 0; i++) { if (i > 5) { n = 1; break; } sleep(i); } current[n-1] = '\0'; (void)fclose(fp); return(1); }
static void inform(char *cf, int rank) { int fd, j; FILE *cfp = NULL; /* * There's a chance the control file has gone away * in the meantime; if this is the case just keep going */ PRIV_START; fd = safe_open(cf, O_RDONLY|O_NOFOLLOW, 0); PRIV_END; if (fd < 0 || (cfp = fdopen(fd, "r")) == NULL) { if (fd >= 0) close(fd); return; } j = 0; while (getcfline(cfp)) { switch (line[0]) { case 'P': /* Was this file specified in the user's list? */ if (!inlist(line+1, cf)) { fclose(cfp); return; } if (lflag) { printf("\n%s: ", line+1); col = strlen(line+1) + 2; prank(rank); blankfill(JOBCOL); printf(" [job %s]\n", cf+3); } else { col = 0; prank(rank); blankfill(OWNCOL); printf("%-10s %-3d ", line+1, atoi(cf+3)); col += 16; first = 1; } continue; default: /* some format specifer and file name? */ if (line[0] < 'a' || line[0] > 'z') continue; if (j == 0 || strcmp(file, line+1) != 0) (void)strlcpy(file, line+1, sizeof(file)); j++; continue; case 'N': show(line+1, file, j); file[0] = '\0'; j = 0; } } fclose(cfp); if (!lflag) { blankfill(termwidth - (80 - SIZCOL)); printf("%lld bytes\n", (long long)totsize); totsize = 0; } }