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| static bool UnixSymlink(const char *Target,const wchar *LinkName,RarTime *ftm,RarTime *fta) | |
| { | |
| CreatePath(LinkName,true); | |
| DelFile(LinkName); | |
| char LinkNameA[NM]; | |
| WideToChar(LinkName,LinkNameA,ASIZE(LinkNameA)); | |
| if (symlink(Target,LinkNameA)==-1) // Error. | |
| { | |
| if (errno==EEXIST) | |
| uiMsg(UIERROR_ULINKEXIST,LinkName); | |
| else | |
| { | |
| uiMsg(UIERROR_SLINKCREATE,UINULL,LinkName); | |
| ErrHandler.SetErrorCode(RARX_WARNING); | |
| } | |
| return false; | |
| } | |
| #ifdef USE_LUTIMES | |
| #ifdef UNIX_TIME_NS | |
| timespec times[2]; | |
| times[0].tv_sec=fta->GetUnix(); | |
| times[0].tv_nsec=fta->IsSet() ? long(fta->GetUnixNS()%1000000000) : UTIME_NOW; | |
| times[1].tv_sec=ftm->GetUnix(); | |
| times[1].tv_nsec=ftm->IsSet() ? long(ftm->GetUnixNS()%1000000000) : UTIME_NOW; | |
| utimensat(AT_FDCWD,LinkNameA,times,AT_SYMLINK_NOFOLLOW); | |
| #else | |
| struct timeval tv[2]; | |
| tv[0].tv_sec=fta->GetUnix(); | |
| tv[0].tv_usec=long(fta->GetUnixNS()%1000000000/1000); | |
| tv[1].tv_sec=ftm->GetUnix(); | |
| tv[1].tv_usec=long(ftm->GetUnixNS()%1000000000/1000); | |
| lutimes(LinkNameA,tv); | |
| #endif | |
| #endif | |
| return true; | |
| } | |
| static bool IsFullPath(const char *PathA) // Unix ASCII version. | |
| { | |
| return *PathA==CPATHDIVIDER; | |
| } | |
| bool ExtractUnixLink30(CommandData *Cmd,ComprDataIO &DataIO,Archive &Arc,const wchar *LinkName) | |
| { | |
| char Target[NM]; | |
| if (IsLink(Arc.FileHead.FileAttr)) | |
| { | |
| size_t DataSize=Min(Arc.FileHead.PackSize,ASIZE(Target)-1); | |
| DataIO.UnpRead((byte *)Target,DataSize); | |
| Target[DataSize]=0; | |
| DataIO.UnpHash.Init(Arc.FileHead.FileHash.Type,1); | |
| DataIO.UnpHash.Update(Target,strlen(Target)); | |
| DataIO.UnpHash.Result(&Arc.FileHead.FileHash); | |
| // Return true in case of bad checksum, so link will be processed further | |
| // and extraction routine will report the checksum error. | |
| if (!DataIO.UnpHash.Cmp(&Arc.FileHead.FileHash,Arc.FileHead.UseHashKey ? Arc.FileHead.HashKey:NULL)) | |
| return true; | |
| wchar TargetW[NM]; | |
| CharToWide(Target,TargetW,ASIZE(TargetW)); | |
| // Check for *TargetW==0 to catch CharToWide failure. | |
| // Use Arc.FileHead.FileName instead of LinkName, since LinkName | |
| // can include the destination path as a prefix, which can | |
| // confuse IsRelativeSymlinkSafe algorithm. | |
| if (!Cmd->AbsoluteLinks && (*TargetW==0 || IsFullPath(TargetW) || | |
| !IsRelativeSymlinkSafe(Cmd,Arc.FileHead.FileName,LinkName,TargetW))) | |
| return false; | |
| return UnixSymlink(Target,LinkName,&Arc.FileHead.mtime,&Arc.FileHead.atime); | |
| } | |
| return false; | |
| } | |
| bool ExtractUnixLink50(CommandData *Cmd,const wchar *Name,FileHeader *hd) | |
| { | |
| char Target[NM]; | |
| WideToChar(hd->RedirName,Target,ASIZE(Target)); | |
| if (hd->RedirType==FSREDIR_WINSYMLINK || hd->RedirType==FSREDIR_JUNCTION) | |
| { | |
| // Cannot create Windows absolute path symlinks in Unix. Only relative path | |
| // Windows symlinks can be created here. RAR 5.0 used \??\ prefix | |
| // for Windows absolute symlinks, since RAR 5.1 /??/ is used. | |
| // We escape ? as \? to avoid "trigraph" warning | |
| if (strncmp(Target,"\\??\\",4)==0 || strncmp(Target,"/\?\?/",4)==0) | |
| return false; | |
| DosSlashToUnix(Target,Target,ASIZE(Target)); | |
| } | |
| // Use hd->FileName instead of LinkName, since LinkName can include | |
| // the destination path as a prefix, which can confuse | |
| // IsRelativeSymlinkSafe algorithm. | |
| if (!Cmd->AbsoluteLinks && (IsFullPath(Target) || | |
| !IsRelativeSymlinkSafe(Cmd,hd->FileName,Name,hd->RedirName))) | |
| return false; | |
| return UnixSymlink(Target,Name,&hd->mtime,&hd->atime); | |
| } |