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| Rev | Author | Line No. | Line |
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| 10 | reyssat | 1 | /* Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis |
| 2 | * |
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| 3 | * This program is free software; you can redistribute it and/or modify |
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| 4 | * it under the terms of the GNU General Public License as published by |
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| 5 | * the Free Software Foundation; either version 2 of the License, or |
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| 6 | * (at your option) any later version. |
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| 7 | * |
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| 8 | * This program is distributed in the hope that it will be useful, |
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| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 11 | * GNU General Public License for more details. |
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| 12 | * |
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| 13 | * You should have received a copy of the GNU General Public License |
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| 14 | * along with this program; if not, write to the Free Software |
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| 15 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 16 | */ |
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| 17 | |||
| 18 | /* File manipulation */ |
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| 19 | |||
| 20 | enum{is_file, is_dir, is_exec, is_fifo, is_socket, is_unknown}; |
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| 21 | struct stat ftst; |
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| 22 | |||
| 23 | /* A simple front-end of stat(). */ |
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| 24 | int ftest(char *fname) |
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| 25 | { |
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| 26 | if(strstr(fname,"..")!=NULL) return -1; /* parent directory not allowed */ |
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| 27 | if(stat(fname,&ftst)) return -1; |
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| 28 | if(S_ISREG(ftst.st_mode)) { |
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| 29 | if((ftst.st_mode&(S_IXUSR|S_IXGRP|S_IXOTH))!=0) return is_exec; |
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| 30 | else return is_file; |
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| 31 | } |
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| 32 | if(S_ISDIR(ftst.st_mode)) return is_dir; |
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| 33 | if(S_ISFIFO(ftst.st_mode)) return is_fifo; |
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| 34 | if(S_ISSOCK(ftst.st_mode)) return is_socket; |
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| 35 | return is_unknown; |
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| 36 | } |
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| 37 | |||
| 38 | /* read the content of a file */ |
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| 39 | void readfile(char *fname, char buf[], long int buflen) |
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| 40 | { |
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| 41 | int fd, t, st; |
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| 42 | long int l, lc; |
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| 43 | t=0; buf[0]=0; |
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| 44 | st=ftest(fname); if(st!=is_file) return; |
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| 45 | l=ftst.st_size; if(l<=0) return; |
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| 46 | if(l>=buflen) l=buflen-1; /* silent trancation */ |
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| 47 | fd=open(fname,O_RDONLY); if(fd==-1) return; |
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| 48 | lc=read(fd,buf,l); close(fd); |
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| 49 | if(lc!=l) {buf[0]=0; return;} |
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| 50 | buf[lc]=0; _tolinux(buf); return; |
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| 51 | } |
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| 52 | |||
| 53 | /* datafile structure: number of records. |
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| 54 | * tag=1 if direct access */ |
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| 55 | unsigned int datafile_recordnum(char *p) |
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| 56 | { |
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| 57 | char *pp, buf[MAX_FILELEN+1]; |
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| 58 | int i; |
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| 59 | |||
| 60 | readfile(p,buf,sizeof(buf)); |
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| 61 | if(buf[0]!=tag_string[1]) i=0; else i=1; |
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| 62 | for(pp=strstr(buf,tag_string); pp!=NULL; i++, pp=strstr(pp+1,tag_string)); |
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| 63 | return i; |
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| 64 | } |
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| 65 | |||
| 66 | /* datafile structure: find record n, starting from 1 */ |
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| 67 | char *datafile_fnd_record(char *p, int n, char bf[]) |
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| 68 | { |
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| 69 | char *pp, *p2, buf[MAX_FILELEN+1]; |
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| 70 | int i; |
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| 71 | |||
| 72 | bf[0]=0; |
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| 73 | if(n<0) return bf; |
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| 74 | readfile(p,buf,sizeof(buf)); |
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| 75 | if(buf[0]!=tag_string[1]) i=0; else i=1; |
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| 76 | if(i<n) { |
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| 77 | for(i++, pp=strstr(buf,tag_string); |
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| 78 | i<n && pp!=NULL; |
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| 79 | i++, pp=strstr(pp+1,tag_string)); |
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| 80 | } |
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| 81 | else { |
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| 82 | if(i>n) goto end; |
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| 83 | pp=buf-1; |
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| 84 | } |
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| 85 | if(pp==NULL) { /* n too big */ |
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| 86 | goto end; |
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| 87 | } |
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| 88 | if(n>0) pp+=strlen(tag_string); else pp=buf; |
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| 89 | p2=strstr(pp,tag_string); if(p2) *p2=0; |
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| 90 | mystrncpy(bf,pp,MAX_LINELEN); |
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| 91 | end: return bf; |
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| 92 | } |
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| 93 |