/* Copyright (c) 1990-2008 Info-ZIP. All rights reserved. See the accompanying file LICENSE, version 2000-Apr-09 or later (the contents of which are also included in unzip.h) for terms of use. If, for some reason, all these files are missing, the Info-ZIP license also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html */ /*--------------------------------------------------------------------------- atheos.c by Ruslan Nickolaev (nruslan@hotbox.ru) AtheOS-specific routines for use with Info-ZIP's UnZip 5.51 and later. (based on beos/beos.c and unix/unix.c) Contains: do_wild() <-- generic enough to put in fileio.c? mapattr() mapname() checkdir() close_outfile() defer_dir_attribs() set_direc_attribs() stamp_file() version() scanAtheOSexfield() set_file_attrs() setAtheOSexfield() ---------------------------------------------------------------------------*/ #define UNZIP_INTERNAL #include "unzip.h" #include "atheos.h" #include /* Just make sure we've got a few things... */ #include #include #include #include static unsigned filtattr OF((__GPRO__ unsigned perms)); static uch *scanAtheOSexfield OF((const uch *ef_ptr, unsigned ef_len)); static int set_file_attrs( const char *, const unsigned char *, const off_t ); static void setAtheOSexfield OF((const char *path, uch *extra_field)); #ifdef SET_DIR_ATTRIB typedef struct uxdirattr { /* struct for holding unix style directory */ struct uxdirattr *next; /* info until can be sorted and set at end */ char *fn; /* filename of directory */ union { iztimes t3; /* mtime, atime, ctime */ ztimbuf t2; /* modtime, actime */ } u; unsigned perms; /* same as min_info.file_attr */ int have_uidgid; /* flag */ ulg uidgid[2]; char fnbuf[1]; /* buffer stub for directory name */ } uxdirattr; #define UxAtt(d) ((uxdirattr *)d) /* typecast shortcut */ #endif /* SET_DIR_ATTRIB */ #ifdef ACORN_FTYPE_NFS /* Acorn bits for NFS filetyping */ typedef struct { uch ID[2]; uch size[2]; uch ID_2[4]; uch loadaddr[4]; uch execaddr[4]; uch attr[4]; } RO_extra_block; #endif /* ACORN_FTYPE_NFS */ /* static int created_dir; */ /* used in mapname(), checkdir() */ /* static int renamed_fullpath; */ /* ditto */ #ifndef SFX /**********************/ /* Function do_wild() */ /* for porting: dir separator; match(ignore_case) */ /**********************/ char *do_wild(__G__ wildspec) __GDEF ZCONST char *wildspec; /* only used first time on a given dir */ { /* these statics are now declared in SYSTEM_SPECIFIC_GLOBALS in athcfg.h: static DIR *wild_dir = (DIR *)NULL; static ZCONST char *wildname; static char *dirname, matchname[FILNAMSIZ]; static int notfirstcall=FALSE, have_dirname, dirnamelen; */ struct dirent *file; /* Even when we're just returning wildspec, we *always* do so in * matchname[]--calling routine is allowed to append four characters * to the returned string, and wildspec may be a pointer to argv[]. */ if (!G.notfirstcall) { /* first call: must initialize everything */ G.notfirstcall = TRUE; if (!iswild(wildspec)) { strncpy(G.matchname, wildspec, FILNAMSIZ); G.matchname[FILNAMSIZ-1] = '\0'; G.have_dirname = FALSE; G.wild_dir = NULL; return G.matchname; } /* break the wildspec into a directory part and a wildcard filename */ if ((G.wildname = (ZCONST char *)strrchr(wildspec, '/')) == NULL) { G.dirname = "."; G.dirnamelen = 1; G.have_dirname = FALSE; G.wildname = wildspec; } else { ++G.wildname; /* point at character after '/' */ G.dirnamelen = G.wildname - wildspec; if ((G.dirname = (char *)malloc(G.dirnamelen+1)) == (char *)NULL) { Info(slide, 0x201, ((char *)slide, "warning: cannot allocate wildcard buffers\n")); strncpy(G.matchname, wildspec, FILNAMSIZ); G.matchname[FILNAMSIZ-1] = '\0'; return G.matchname; /* but maybe filespec was not a wildcard */ } strncpy(G.dirname, wildspec, G.dirnamelen); G.dirname[G.dirnamelen] = '\0'; /* terminate for strcpy below */ G.have_dirname = TRUE; } if ((G.wild_dir = (zvoid *)opendir(G.dirname)) != (zvoid *)NULL) { while ((file = readdir((DIR *)G.wild_dir)) != (struct dirent *)NULL) { Trace((stderr, "do_wild: readdir returns %s\n", FnFilter1(file->d_name))); if (file->d_name[0] == '.' && G.wildname[0] != '.') continue; /* Unix: '*' and '?' do not match leading dot */ if (match(file->d_name, G.wildname, 0 WISEP) &&/*0=case sens.*/ /* skip "." and ".." directory entries */ strcmp(file->d_name, ".") && strcmp(file->d_name, "..")) { Trace((stderr, "do_wild: match() succeeds\n")); if (G.have_dirname) { strcpy(G.matchname, G.dirname); strcpy(G.matchname+G.dirnamelen, file->d_name); } else strcpy(G.matchname, file->d_name); return G.matchname; } } /* if we get to here directory is exhausted, so close it */ closedir((DIR *)G.wild_dir); G.wild_dir = (zvoid *)NULL; } Trace((stderr, "do_wild: opendir(%s) returns NULL\n", FnFilter1(G.dirname))); /* return the raw wildspec in case that works (e.g., directory not * searchable, but filespec was not wild and file is readable) */ strncpy(G.matchname, wildspec, FILNAMSIZ); G.matchname[FILNAMSIZ-1] = '\0'; return G.matchname; } /* last time through, might have failed opendir but returned raw wildspec */ if ((DIR *)G.wild_dir == (DIR *)NULL) { G.notfirstcall = FALSE; /* nothing left--reset for new wildspec */ if (G.have_dirname) free(G.dirname); return (char *)NULL; } /* If we've gotten this far, we've read and matched at least one entry * successfully (in a previous call), so dirname has been copied into * matchname already. */ while ((file = readdir((DIR *)G.wild_dir)) != (struct dirent *)NULL) { Trace((stderr, "do_wild: readdir returns %s\n", FnFilter1(file->d_name))); if (file->d_name[0] == '.' && G.wildname[0] != '.') continue; /* Unix: '*' and '?' do not match leading dot */ if (match(file->d_name, G.wildname, 0 WISEP)) { /* 0 == case sens. */ Trace((stderr, "do_wild: match() succeeds\n")); if (G.have_dirname) { /* strcpy(G.matchname, G.dirname); */ strcpy(G.matchname+G.dirnamelen, file->d_name); } else strcpy(G.matchname, file->d_name); return G.matchname; } } closedir((DIR *)G.wild_dir); /* at least one entry read; nothing left */ G.wild_dir = (zvoid *)NULL; G.notfirstcall = FALSE; /* reset for new wildspec */ if (G.have_dirname) free(G.dirname); return (char *)NULL; } /* end function do_wild() */ #endif /* !SFX */ #ifndef S_ISUID # define S_ISUID 0004000 /* set user id on execution */ #endif #ifndef S_ISGID # define S_ISGID 0002000 /* set group id on execution */ #endif #ifndef S_ISVTX # define S_ISVTX 0001000 /* save swapped text even after use */ #endif /************************/ /* Function filtattr() */ /************************/ /* This is used to clear or keep the SUID and GID bits on file permissions. * It's possible that a file in an archive could have one of these bits set * and, unknown to the person unzipping, could allow others to execute the * file as the user or group. The new option -K bypasses this check. */ static unsigned filtattr(__G__ perms) __GDEF unsigned perms; { /* keep setuid/setgid/tacky perms? */ if (!uO.K_flag) perms &= ~(S_ISUID | S_ISGID | S_ISVTX); return (0xffff & perms); } /* end function filtattr() */ /**********************/ /* Function mapattr() */ /**********************/ int mapattr(__G) __GDEF { int r; ulg tmp = G.crec.external_file_attributes; G.pInfo->file_attr = 0; /* initialized to 0 for check in "default" branch below... */ switch (G.pInfo->hostnum) { case AMIGA_: tmp = (unsigned)(tmp>>17 & 7); /* Amiga RWE bits */ G.pInfo->file_attr = (unsigned)(tmp<<6 | tmp<<3 | tmp); break; case THEOS_: tmp &= 0xF1FFFFFFL; if ((tmp & 0xF0000000L) != 0x40000000L) tmp &= 0x01FFFFFFL; /* not a dir, mask all ftype bits */ else tmp &= 0x41FFFFFFL; /* leave directory bit as set */ /* fall through! */ case ATHEOS_: case UNIX_: case VMS_: case ACORN_: case ATARI_: case BEOS_: case QDOS_: case TANDEM_: r = FALSE; G.pInfo->file_attr = (unsigned)(tmp >> 16); if (G.pInfo->file_attr == 0 && G.extra_field) { /* Some (non-Info-ZIP) implementations of Zip for Unix and * VMS (and probably others ??) leave 0 in the upper 16-bit * part of the external_file_attributes field. Instead, they * store file permission attributes in some extra field. * As a work-around, we search for the presence of one of * these extra fields and fall back to the MSDOS compatible * part of external_file_attributes if one of the known * e.f. types has been detected. * Later, we might implement extraction of the permission * bits from the VMS extra field. But for now, the work-around * should be sufficient to provide "readable" extracted files. * (For ASI Unix e.f., an experimental remap of the e.f. * mode value IS already provided!) */ ush ebID; unsigned ebLen; uch *ef = G.extra_field; unsigned ef_len = G.crec.extra_field_length; while (!r && ef_len >= EB_HEADSIZE) { ebID = makeword(ef); ebLen = (unsigned)makeword(ef+EB_LEN); if (ebLen > (ef_len - EB_HEADSIZE)) /* discoverd some e.f. inconsistency! */ break; switch (ebID) { case EF_ASIUNIX: if (ebLen >= (EB_ASI_MODE+2)) { G.pInfo->file_attr = (unsigned)makeword(ef+(EB_HEADSIZE+EB_ASI_MODE)); /* force stop of loop: */ ef_len = (ebLen + EB_HEADSIZE); break; } /* else: fall through! */ case EF_PKVMS: /* "found nondecypherable e.f. with perm. attr" */ r = TRUE; default: break; } ef_len -= (ebLen + EB_HEADSIZE); ef += (ebLen + EB_HEADSIZE); } } if (!r) { #ifdef SYMLINKS /* Check if the file is a (POSIX-compatible) symbolic link. * We restrict symlink support to those "made-by" hosts that * are known to support symbolic links. */ G.pInfo->symlink = S_ISLNK(G.pInfo->file_attr) && SYMLINK_HOST(G.pInfo->hostnum); #endif return 0; } /* fall through! */ /* all remaining cases: expand MSDOS read-only bit into write perms */ case FS_FAT_: /* PKWARE's PKZip for Unix marks entries as FS_FAT_, but stores the * Unix attributes in the upper 16 bits of the external attributes * field, just like Info-ZIP's Zip for Unix. We try to use that * value, after a check for consistency with the MSDOS attribute * bits (see below). */ G.pInfo->file_attr = (unsigned)(tmp >> 16); /* fall through! */ case FS_HPFS_: case FS_NTFS_: case MAC_: case TOPS20_: default: /* Ensure that DOS subdir bit is set when the entry's name ends * in a '/'. Some third-party Zip programs fail to set the subdir * bit for directory entries. */ if ((tmp & 0x10) == 0) { extent fnlen = strlen(G.filename); if (fnlen > 0 && G.filename[fnlen-1] == '/') tmp |= 0x10; } /* read-only bit --> write perms; subdir bit --> dir exec bit */ tmp = !(tmp & 1) << 1 | (tmp & 0x10) >> 4; if ((G.pInfo->file_attr & 0700) == (unsigned)(0400 | tmp<<6)) { /* keep previous G.pInfo->file_attr setting, when its "owner" * part appears to be consistent with DOS attribute flags! */ #ifdef SYMLINKS /* Entries "made by FS_FAT_" could have been zipped on a * system that supports POSIX-style symbolic links. */ G.pInfo->symlink = S_ISLNK(G.pInfo->file_attr) && (G.pInfo->hostnum == FS_FAT_); #endif return 0; } G.pInfo->file_attr = (unsigned)(0444 | tmp<<6 | tmp<<3 | tmp); break; } /* end switch (host-OS-created-by) */ /* for originating systems with no concept of "group," "other," "system": */ umask( (int)(tmp=umask(0)) ); /* apply mask to expanded r/w(/x) perms */ G.pInfo->file_attr &= ~tmp; return 0; } /* end function mapattr() */ /************************/ /* Function mapname() */ /************************/ int mapname(__G__ renamed) __GDEF int renamed; /* * returns: * MPN_OK - no problem detected * MPN_INF_TRUNC - caution (truncated filename) * MPN_INF_SKIP - info "skip entry" (dir doesn't exist) * MPN_ERR_SKIP - error -> skip entry * MPN_ERR_TOOLONG - error -> path is too long * MPN_NOMEM - error (memory allocation failed) -> skip entry * [also MPN_VOL_LABEL, MPN_CREATED_DIR] */ { char pathcomp[FILNAMSIZ]; /* path-component buffer */ char *pp, *cp=(char *)NULL; /* character pointers */ char *lastsemi=(char *)NULL; /* pointer to last semi-colon in pathcomp */ #ifdef ACORN_FTYPE_NFS char *lastcomma=(char *)NULL; /* pointer to last comma in pathcomp */ RO_extra_block *ef_spark; /* pointer Acorn FTYPE ef block */ #endif int killed_ddot = FALSE; /* is set when skipping "../" pathcomp */ int error = MPN_OK; register unsigned workch; /* hold the character being tested */ /*--------------------------------------------------------------------------- Initialize various pointers and counters and stuff. ---------------------------------------------------------------------------*/ if (G.pInfo->vollabel) return MPN_VOL_LABEL; /* can't set disk volume labels in AtheOS */ /* can create path as long as not just freshening, or if user told us */ G.create_dirs = (!uO.fflag || renamed); G.created_dir = FALSE; /* not yet */ /* user gave full pathname: don't prepend rootpath */ G.renamed_fullpath = (renamed && (*G.filename == '/')); if (checkdir(__G__ (char *)NULL, INIT) == MPN_NOMEM) return MPN_NOMEM; /* initialize path buffer, unless no memory */ *pathcomp = '\0'; /* initialize translation buffer */ pp = pathcomp; /* point to translation buffer */ if (uO.jflag) /* junking directories */ cp = (char *)strrchr(G.filename, '/'); if (cp == (char *)NULL) /* no '/' or not junking dirs */ cp = G.filename; /* point to internal zipfile-member pathname */ else ++cp; /* point to start of last component of path */ /*--------------------------------------------------------------------------- Begin main loop through characters in filename. ---------------------------------------------------------------------------*/ while ((workch = (uch)*cp++) != 0) { switch (workch) { case '/': /* can assume -j flag not given */ *pp = '\0'; if (strcmp(pathcomp, ".") == 0) { /* don't bother appending "./" to the path */ *pathcomp = '\0'; } else if (!uO.ddotflag && strcmp(pathcomp, "..") == 0) { /* "../" dir traversal detected, skip over it */ *pathcomp = '\0'; killed_ddot = TRUE; /* set "show message" flag */ } /* when path component is not empty, append it now */ if (*pathcomp != '\0' && ((error = checkdir(__G__ pathcomp, APPEND_DIR)) & MPN_MASK) > MPN_INF_TRUNC) return error; pp = pathcomp; /* reset conversion buffer for next piece */ lastsemi = (char *)NULL; /* leave direct. semi-colons alone */ break; case ';': /* VMS version (or DEC-20 attrib?) */ lastsemi = pp; *pp++ = ';'; /* keep for now; remove VMS ";##" */ break; /* later, if requested */ #ifdef ACORN_FTYPE_NFS case ',': /* NFS filetype extension */ lastcomma = pp; *pp++ = ','; /* keep for now; may need to remove */ break; /* later, if requested */ #endif default: /* allow European characters in filenames: */ if (isprint(workch) || (128 <= workch && workch <= 254)) *pp++ = (char)workch; } /* end switch */ } /* end while loop */ /* Show warning when stripping insecure "parent dir" path components */ if (killed_ddot && QCOND2) { Info(slide, 0, ((char *)slide, "warning: skipped \"../\" path component(s) in %s\n", FnFilter1(G.filename))); if (!(error & ~MPN_MASK)) error = (error & MPN_MASK) | PK_WARN; } /*--------------------------------------------------------------------------- Report if directory was created (and no file to create: filename ended in '/'), check name to be sure it exists, and combine path and name be- fore exiting. ---------------------------------------------------------------------------*/ if (G.filename[strlen(G.filename) - 1] == '/') { checkdir(__G__ G.filename, GETPATH); if (G.created_dir) { if (QCOND2) { Info(slide, 0, ((char *)slide, " creating: %s\n", FnFilter1(G.filename))); } if (!uO.J_flag) { /* Handle the AtheOS extra field if present. */ void *ptr = scanAtheOSexfield(G.extra_field, G.lrec.extra_field_length); if (ptr) { setAtheOSexfield( G.filename, ptr ); } } #ifndef NO_CHMOD /* set approx. dir perms (make sure can still read/write in dir) */ if (chmod(G.filename, filtattr(__G__ G.pInfo->file_attr) | 0700)) perror("chmod (directory attributes) error"); #endif /* set dir time (note trailing '/') */ return (error & ~MPN_MASK) | MPN_CREATED_DIR; } if (!uO.J_flag) { /* Handle the AtheOS extra field if present. */ void *ptr = scanAtheOSexfield(G.extra_field, G.lrec.extra_field_length); if (ptr) { setAtheOSexfield(G.filename, ptr); } } /* dir existed already; don't look for data to extract */ return (error & ~MPN_MASK) | MPN_INF_SKIP; } *pp = '\0'; /* done with pathcomp: terminate it */ /* if not saving them, remove VMS version numbers (appended ";###") */ if (!uO.V_flag && lastsemi) { pp = lastsemi + 1; while (isdigit((uch)(*pp))) ++pp; if (*pp == '\0') /* only digits between ';' and end: nuke */ *lastsemi = '\0'; } /* On UNIX (and compatible systems), "." and ".." are reserved for * directory navigation and cannot be used as regular file names. * These reserved one-dot and two-dot names are mapped to "_" and "__". */ if (strcmp(pathcomp, ".") == 0) *pathcomp = '_'; else if (strcmp(pathcomp, "..") == 0) strcpy(pathcomp, "__"); #ifdef ACORN_FTYPE_NFS /* translate Acorn filetype information if asked to do so */ if (uO.acorn_nfs_ext && (ef_spark = (RO_extra_block *) getRISCOSexfield(G.extra_field, G.lrec.extra_field_length)) != (RO_extra_block *)NULL) { /* file *must* have a RISC OS extra field */ long ft = (long)makelong(ef_spark->loadaddr); /*32-bit*/ if (lastcomma) { pp = lastcomma + 1; while (isxdigit((uch)(*pp))) ++pp; if (pp == lastcomma+4 && *pp == '\0') *lastcomma='\0'; /* nuke */ } if ((ft & 1<<31)==0) ft=0x000FFD00; sprintf(pathcomp+strlen(pathcomp), ",%03x", (int)(ft>>8) & 0xFFF); } #endif /* ACORN_FTYPE_NFS */ if (*pathcomp == '\0') { Info(slide, 1, ((char *)slide, "mapname: conversion of %s failed\n", FnFilter1(G.filename))); return (error & ~MPN_MASK) | MPN_ERR_SKIP; } checkdir(__G__ pathcomp, APPEND_NAME); /* returns 1 if truncated: care? */ checkdir(__G__ G.filename, GETPATH); return error; } /* end function mapname() */ /***********************/ /* Function checkdir() */ /***********************/ int checkdir(__G__ pathcomp, flag) __GDEF char *pathcomp; int flag; /* * returns: * MPN_OK - no problem detected * MPN_INF_TRUNC - (on APPEND_NAME) truncated filename * MPN_INF_SKIP - path doesn't exist, not allowed to create * MPN_ERR_SKIP - path doesn't exist, tried to create and failed; or path * exists and is not a directory, but is supposed to be * MPN_ERR_TOOLONG - path is too long * MPN_NOMEM - can't allocate memory for filename buffers */ { /* static int rootlen = 0; */ /* length of rootpath */ /* static char *rootpath; */ /* user's "extract-to" directory */ /* static char *buildpath; */ /* full path (so far) to extracted file */ /* static char *end; */ /* pointer to end of buildpath ('\0') */ # define FN_MASK 7 # define FUNCTION (flag & FN_MASK) /*--------------------------------------------------------------------------- APPEND_DIR: append the path component to the path being built and check for its existence. If doesn't exist and we are creating directories, do so for this one; else signal success or error as appropriate. ---------------------------------------------------------------------------*/ if (FUNCTION == APPEND_DIR) { int too_long = FALSE; #ifdef SHORT_NAMES char *old_end = end; #endif Trace((stderr, "appending dir segment [%s]\n", FnFilter1(pathcomp))); while ((*G.end = *pathcomp++) != '\0') ++G.end; #ifdef SHORT_NAMES /* path components restricted to 14 chars, typically */ if ((G.end-old_end) > FILENAME_MAX) /* GRR: proper constant? */ *(G.end = old_end + FILENAME_MAX) = '\0'; #endif /* GRR: could do better check, see if overrunning buffer as we go: * check end-buildpath after each append, set warning variable if * within 20 of FILNAMSIZ; then if var set, do careful check when * appending. Clear variable when begin new path. */ /* next check: need to append '/', at least one-char name, '\0' */ if ((G.end-G.buildpath) > FILNAMSIZ-3) too_long = TRUE; /* check if extracting dir? */ if (SSTAT(G.buildpath, &G.statbuf)) { /* path doesn't exist */ if (!G.create_dirs) { /* told not to create (freshening) */ free(G.buildpath); return MPN_INF_SKIP; /* path doesn't exist: nothing to do */ } if (too_long) { Info(slide, 1, ((char *)slide, "checkdir error: path too long: %s\n", FnFilter1(G.buildpath))); free(G.buildpath); /* no room for filenames: fatal */ return MPN_ERR_TOOLONG; } if (mkdir(G.buildpath, 0777) == -1) { /* create the directory */ Info(slide, 1, ((char *)slide, "checkdir error: cannot create %s\n\ unable to process %s.\n", FnFilter2(G.buildpath), FnFilter1(G.filename))); free(G.buildpath); /* path didn't exist, tried to create, failed */ return MPN_ERR_SKIP; } G.created_dir = TRUE; } else if (!S_ISDIR(G.statbuf.st_mode)) { Info(slide, 1, ((char *)slide, "checkdir error: %s exists but is not directory\n\ unable to process %s.\n", FnFilter2(G.buildpath), FnFilter1(G.filename))); free(G.buildpath); /* path existed but wasn't dir */ return MPN_ERR_SKIP; } if (too_long) { Info(slide, 1, ((char *)slide, "checkdir error: path too long: %s\n", FnFilter1(G.buildpath))); free(G.buildpath); /* no room for filenames: fatal */ return MPN_ERR_TOOLONG; } *G.end++ = '/'; *G.end = '\0'; Trace((stderr, "buildpath now = [%s]\n", FnFilter1(G.buildpath))); return MPN_OK; } /* end if (FUNCTION == APPEND_DIR) */ /*--------------------------------------------------------------------------- GETPATH: copy full path to the string pointed at by pathcomp, and free G.buildpath. ---------------------------------------------------------------------------*/ if (FUNCTION == GETPATH) { strcpy(pathcomp, G.buildpath); Trace((stderr, "getting and freeing path [%s]\n", FnFilter1(pathcomp))); free(G.buildpath); G.buildpath = G.end = (char *)NULL; return MPN_OK; } /*--------------------------------------------------------------------------- APPEND_NAME: assume the path component is the filename; append it and return without checking for existence. ---------------------------------------------------------------------------*/ if (FUNCTION == APPEND_NAME) { #ifdef SHORT_NAMES char *old_end = end; #endif Trace((stderr, "appending filename [%s]\n", FnFilter1(pathcomp))); while ((*G.end = *pathcomp++) != '\0') { ++G.end; #ifdef SHORT_NAMES /* truncate name at 14 characters, typically */ if ((G.end-old_end) > FILENAME_MAX) /* GRR: proper constant? */ *(G.end = old_end + FILENAME_MAX) = '\0'; #endif if ((G.end-G.buildpath) >= FILNAMSIZ) { *--G.end = '\0'; Info(slide, 0x201, ((char *)slide, "checkdir warning: path too long; truncating\n\ %s\n -> %s\n", FnFilter1(G.filename), FnFilter2(G.buildpath))); return MPN_INF_TRUNC; /* filename truncated */ } } Trace((stderr, "buildpath now = [%s]\n", FnFilter1(G.buildpath))); /* could check for existence here, prompt for new name... */ return MPN_OK; } /*--------------------------------------------------------------------------- INIT: allocate and initialize buffer space for the file currently being extracted. If file was renamed with an absolute path, don't prepend the extract-to path. ---------------------------------------------------------------------------*/ /* GRR: for VMS and TOPS-20, add up to 13 to strlen */ if (FUNCTION == INIT) { Trace((stderr, "initializing buildpath to ")); #ifdef ACORN_FTYPE_NFS if ((G.buildpath = (char *)malloc(strlen(G.filename)+G.rootlen+ (uO.acorn_nfs_ext ? 5 : 1))) #else if ((G.buildpath = (char *)malloc(strlen(G.filename)+G.rootlen+1)) #endif == (char *)NULL) return MPN_NOMEM; if ((G.rootlen > 0) && !G.renamed_fullpath) { strcpy(G.buildpath, G.rootpath); G.end = G.buildpath + G.rootlen; } else { *G.buildpath = '\0'; G.end = G.buildpath; } Trace((stderr, "[%s]\n", FnFilter1(G.buildpath))); return MPN_OK; } /*--------------------------------------------------------------------------- ROOT: if appropriate, store the path in rootpath and create it if necessary; else assume it's a zipfile member and return. This path segment gets used in extracting all members from every zipfile specified on the command line. ---------------------------------------------------------------------------*/ #if (!defined(SFX) || defined(SFX_EXDIR)) if (FUNCTION == ROOT) { Trace((stderr, "initializing root path to [%s]\n", FnFilter1(pathcomp))); if (pathcomp == (char *)NULL) { G.rootlen = 0; return MPN_OK; } if (G.rootlen > 0) /* rootpath was already set, nothing to do */ return MPN_OK; if ((G.rootlen = strlen(pathcomp)) > 0) { char *tmproot; if ((tmproot = (char *)malloc(G.rootlen+2)) == (char *)NULL) { G.rootlen = 0; return MPN_NOMEM; } strcpy(tmproot, pathcomp); if (tmproot[G.rootlen-1] == '/') { tmproot[--G.rootlen] = '\0'; } if (G.rootlen > 0 && (SSTAT(tmproot, &G.statbuf) || !S_ISDIR(G.statbuf.st_mode))) { /* path does not exist */ if (!G.create_dirs /* || iswild(tmproot) */ ) { free(tmproot); G.rootlen = 0; /* skip (or treat as stored file) */ return MPN_INF_SKIP; } /* create the directory (could add loop here scanning tmproot * to create more than one level, but why really necessary?) */ if (mkdir(tmproot, 0777) == -1) { Info(slide, 1, ((char *)slide, "checkdir: cannot create extraction directory: %s\n", FnFilter1(tmproot))); free(tmproot); G.rootlen = 0; /* path didn't exist, tried to create, and failed: */ /* file exists, or 2+ subdir levels required */ return MPN_ERR_SKIP; } } tmproot[G.rootlen++] = '/'; tmproot[G.rootlen] = '\0'; if ((G.rootpath = (char *)realloc(tmproot, G.rootlen+1)) == NULL) { free(tmproot); G.rootlen = 0; return MPN_NOMEM; } Trace((stderr, "rootpath now = [%s]\n", FnFilter1(G.rootpath))); } return MPN_OK; } #endif /* !SFX || SFX_EXDIR */ /*--------------------------------------------------------------------------- END: free rootpath, immediately prior to program exit. ---------------------------------------------------------------------------*/ if (FUNCTION == END) { Trace((stderr, "freeing rootpath\n")); if (G.rootlen > 0) { free(G.rootpath); G.rootlen = 0; } return MPN_OK; } return MPN_INVALID; /* should never reach */ } /* end function checkdir() */ static int get_extattribs OF((__GPRO__ iztimes *pzt, ulg z_uidgid[2])); static int get_extattribs(__G__ pzt, z_uidgid) __GDEF iztimes *pzt; ulg z_uidgid[2]; { /*--------------------------------------------------------------------------- Convert from MSDOS-format local time and date to Unix-format 32-bit GMT time: adjust base year from 1980 to 1970, do usual conversions from yy/mm/dd hh:mm:ss to elapsed seconds, and account for timezone and day- light savings time differences. If we have a Unix extra field, however, we're laughing: both mtime and atime are ours. On the other hand, we then have to check for restoration of UID/GID. ---------------------------------------------------------------------------*/ int have_uidgid_flg; unsigned eb_izux_flg; eb_izux_flg = (G.extra_field ? ef_scan_for_izux(G.extra_field, G.lrec.extra_field_length, 0, G.lrec.last_mod_dos_datetime, #ifdef IZ_CHECK_TZ (G.tz_is_valid ? pzt : NULL), #else pzt, #endif z_uidgid) : 0); if (eb_izux_flg & EB_UT_FL_MTIME) { TTrace((stderr, "\nget_extattribs: Unix e.f. modif. time = %ld\n", pzt->mtime)); } else { pzt->mtime = dos_to_unix_time(G.lrec.last_mod_dos_datetime); } if (eb_izux_flg & EB_UT_FL_ATIME) { TTrace((stderr, "get_extattribs: Unix e.f. access time = %ld\n", pzt->atime)); } else { pzt->atime = pzt->mtime; TTrace((stderr, "\nget_extattribs: modification/access times = %ld\n", pzt->mtime)); } /* if -X option was specified and we have UID/GID info, restore it */ have_uidgid_flg = #ifdef RESTORE_UIDGID (uO.X_flag && (eb_izux_flg & EB_UX2_VALID)); #else 0; #endif return have_uidgid_flg; } /****************************/ /* Function close_outfile() */ /****************************/ void close_outfile(__G) /* GRR: change to return PK-style warning level */ __GDEF { union { iztimes t3; /* mtime, atime, ctime */ struct utimbuf t2; /* modtime, actime */ } zt; ulg z_uidgid[2]; int have_uidgid_flg; /*--------------------------------------------------------------------------- If symbolic links are supported, allocate storage for a symlink control structure, put the uncompressed "data" and other required info in it, and add the structure to the "deferred symlinks" chain. Since we know it's a symbolic link to start with, we shouldn't have to worry about overflowing unsigned ints with unsigned longs. ---------------------------------------------------------------------------*/ #ifdef SYMLINKS if (G.symlnk) { extent ucsize = (extent)G.lrec.ucsize; unsigned AtheOSef_len = 0; extent slnk_entrysize; uch *AtheOS_exfld = NULL; slinkentry *slnk_entry; if (!uO.J_flag) { /* attributes for symlinks are supported too */ AtheOS_exfld = scanAtheOSexfield(G.extra_field, G.lrec.extra_field_length); if (AtheOS_exfld) { AtheOSef_len = makeword(EB_LEN + AtheOS_exfld) + EB_HEADSIZE; } } /* size of the symlink entry is the sum of * (struct size (includes 1st '\0') + 1 additional trailing '\0'), * system specific attribute data size (might be 0), * and the lengths of name and link target. */ slnk_entrysize = (sizeof(slinkentry) + 1) + AtheOSef_len + ucsize + strlen(G.filename); if (slnk_entrysize < ucsize) { Info(slide, 0x201, ((char *)slide, "warning: symbolic link (%s) failed: mem alloc overflow\n", FnFilter1(G.filename))); fclose(G.outfile); return; } if ((slnk_entry = (slinkentry *)malloc(slnk_entrysize)) == NULL) { Info(slide, 0x201, ((char *)slide, "warning: symbolic link (%s) failed: no mem\n", FnFilter1(G.filename))); fclose(G.outfile); return; } slnk_entry->next = NULL; slnk_entry->targetlen = ucsize; slnk_entry->attriblen = AtheOSef_len; slnk_entry->target = slnk_entry->buf + AtheOSef_len; slnk_entry->fname = slnk_entry->target + ucsize + 1; strcpy(slnk_entry->fname, G.filename); if (AtheOSef_len > 0) /* AtheOS_exfld should not be NULL because AtheOSef_len > 0 */ memcpy(slnk_entry->buf, AtheOS_exfld, AtheOSef_len); /* move back to the start of the file to re-read the "link data" */ rewind(G.outfile); if (fread(slnk_entry->target, 1, ucsize, G.outfile) != ucsize) { Info(slide, 0x201, ((char *)slide, "warning: symbolic link (%s) failed\n", FnFilter1(G.filename))); free(slnk_entry); fclose(G.outfile); return; } fclose(G.outfile); /* close "link" file for good... */ slnk_entry->target[ucsize] = '\0'; if (QCOND2) Info(slide, 0, ((char *)slide, "-> %s ", FnFilter1(slnk_entry->target))); /* add this symlink record to the list of deferred symlinks */ if (G.slink_last != NULL) G.slink_last->next = slnk_entry; else G.slink_head = slnk_entry; G.slink_last = slnk_entry; return; } #endif /* SYMLINKS */ fclose(G.outfile); /* handle the AtheOS extra field if present */ if (!uO.J_flag) { void *ptr = scanAtheOSexfield(G.extra_field, G.lrec.extra_field_length); if (ptr) { setAtheOSexfield(G.filename, ptr); } } have_uidgid_flg = get_extattribs(__G__ &(zt.t3), z_uidgid); /* if -X option was specified and we have UID/GID info, restore it */ if (have_uidgid_flg) { TTrace((stderr, "close_outfile: restoring Unix UID/GID info\n")); if (chown(G.filename, (uid_t)z_uidgid[0], (gid_t)z_uidgid[1])) { if (uO.qflag) Info(slide, 0x201, ((char *)slide, "warning: cannot set UID %lu and/or GID %lu for %s\n", z_uidgid[0], z_uidgid[1], FnFilter1(G.filename))); else Info(slide, 0x201, ((char *)slide, " (warning) cannot set UID %lu and/or GID %lu", z_uidgid[0], z_uidgid[1])); } } /* skip restoring time stamps on user's request */ if (uO.D_flag <= 1) { /* set the file's access and modification times */ if (utime(G.filename, &(zt.t2))) { if (uO.qflag) Info(slide, 0x201, ((char *)slide, "warning: cannot set times for %s\n", FnFilter1(G.filename))); else Info(slide, 0x201, ((char *)slide, " (warning) cannot set times")); } } /*--------------------------------------------------------------------------- Change the file permissions from default ones to those stored in the zipfile. ---------------------------------------------------------------------------*/ #ifndef NO_CHMOD if (chmod(G.filename, filtattr(__G__ G.pInfo->file_attr))) perror("chmod (file attributes) error"); #endif } /* end function close_outfile() */ #ifdef SYMLINKS int set_symlnk_attribs(__G__ slnk_entry) __GDEF slinkentry *slnk_entry; { if (slnk_entry->attriblen > 0) setAtheOSexfield(slnk_entry->fname, (uch *)slnk_entry->buf); /* currently, no error propagation... */ return PK_OK; } #endif /* SYMLINKS */ #ifdef SET_DIR_ATTRIB /* messages of code for setting directory attributes */ static ZCONST char Far DirlistUidGidFailed[] = "warning: cannot set UID %lu and/or GID %lu for %s\n"; static ZCONST char Far DirlistUtimeFailed[] = "warning: cannot set modification, access times for %s\n"; # ifndef NO_CHMOD static ZCONST char Far DirlistChmodFailed[] = "warning: cannot set permissions for %s\n"; # endif int defer_dir_attribs(__G__ pd) __GDEF direntry **pd; { uxdirattr *d_entry; d_entry = (uxdirattr *)malloc(sizeof(uxdirattr) + strlen(G.filename)); *pd = (direntry *)d_entry; if (d_entry == (uxdirattr *)NULL) { return PK_MEM; } d_entry->fn = d_entry->fnbuf; strcpy(d_entry->fn, G.filename); d_entry->perms = G.pInfo->file_attr; d_entry->have_uidgid = get_extattribs(__G__ &(d_entry->u.t3), d_entry->uidgid); return PK_OK; } /* end function defer_dir_attribs() */ int set_direc_attribs(__G__ d) __GDEF direntry *d; { int errval = PK_OK; if (UxAtt(d)->have_uidgid && chown(UxAtt(d)->fn, (uid_t)UxAtt(d)->uidgid[0], (gid_t)UxAtt(d)->uidgid[1])) { Info(slide, 0x201, ((char *)slide, LoadFarString(DirlistUidGidFailed), UxAtt(d)->uidgid[0], UxAtt(d)->uidgid[1], FnFilter1(d->fn))); if (!errval) errval = PK_WARN; } /* Skip restoring directory time stamps on user' request. */ if (uO.D_flag <= 0) { /* restore directory timestamps */ if (utime(d->fn, &UxAtt(d)->u.t2)) { Info(slide, 0x201, ((char *)slide, LoadFarString(DirlistUtimeFailed), FnFilter1(d->fn))); if (!errval) errval = PK_WARN; } } #ifndef NO_CHMOD if (chmod(d->fn, filtattr(__G__ UxAtt(d)->perms))) { Info(slide, 0x201, ((char *)slide, LoadFarString(DirlistChmodFailed), FnFilter1(d->fn))); /* perror("chmod (file attributes) error"); */ if (!errval) errval = PK_WARN; } #endif /* !NO_CHMOD */ return errval; } /* end function set_direc_attribs() */ #endif /* SET_DIR_ATTRIB */ #ifdef TIMESTAMP /***************************/ /* Function stamp_file() */ /***************************/ int stamp_file(fname, modtime) ZCONST char *fname; time_t modtime; { ztimbuf tp; tp.modtime = tp.actime = modtime; return (utime(fname, &tp)); } /* end function stamp_file() */ #endif /* TIMESTAMP */ #ifndef SFX /************************/ /* Function version() */ /************************/ void version(__G) __GDEF { sprintf((char *)slide, LoadFarString(CompiledWith), #ifdef __GNUC__ "gcc ", __VERSION__, #else "(unknown compiler) ","", #endif "Syllable", #if defined(i486) || defined(__i486) || defined(__i486__) || defined(i386) || defined(__i386) || defined(__i386__) " (x86)", #else " (unknown platform)", #endif #ifdef __DATE__ " on ", __DATE__ #else "", "" #endif ); (*G.message)((zvoid *)&G, slide, (ulg)strlen((char *)slide), 0); } /* end function version() */ #endif /* !SFX */ /*********************************/ /* AtheOS extra field functions */ /*********************************/ /* ** Scan the extra fields in extra_field, and look for a AtheOS EF; return a ** pointer to that EF, or NULL if it's not there. */ static uch *scanAtheOSexfield(const uch *ef_ptr, unsigned ef_len) { while( ef_ptr != NULL && ef_len >= EB_HEADSIZE ) { unsigned eb_id = makeword(EB_ID + ef_ptr); unsigned eb_len = makeword(EB_LEN + ef_ptr); if (eb_len > (ef_len - EB_HEADSIZE)) { Trace((stderr, "scanAtheOSexfield: block length %u > rest ef_size %u\n", eb_len, ef_len - EB_HEADSIZE)); break; } if (eb_id == EF_ATHEOS && eb_len >= EB_BEOS_HLEN) { return (uch *)ef_ptr; } ef_ptr += (eb_len + EB_HEADSIZE); ef_len -= (eb_len + EB_HEADSIZE); } return NULL; } /* Used by setAtheOSexfield(): Set a file/directory's attributes to the attributes passed in. If set_file_attrs() fails, an error will be returned: EOK - no errors occurred (other values will be whatever the failed function returned; no docs yet, or I'd list a few) */ static int set_file_attrs( const char *name, const unsigned char *attr_buff, const off_t attr_size ) { int retval = EOK; unsigned char *ptr; const unsigned char *guard; int fd; ptr = (unsigned char *)attr_buff; guard = ptr + attr_size; fd = open(name, O_RDWR | O_NOTRAVERSE); if (fd < 0) { return errno; /* should it be -fd ? */ } while (ptr < guard) { ssize_t nError; struct attr_info fa_info; const char *attr_name; unsigned char *attr_data; attr_name = (char *)&(ptr[0]); ptr += strlen(attr_name) + 1; /* The attr_info data is stored in little-endian format because the */ /* Intel i386 port was here first. */ memcpy(&fa_info, ptr, sizeof(struct attr_info)); ptr += sizeof(struct attr_info); if (fa_info.ai_size < 0LL) { Info(slide, 0x201, ((char *)slide, "warning: skipping attribute with invalid length (%Ld)\n", fa_info.ai_size)); break; } attr_data = ptr; ptr += fa_info.ai_size; if (ptr > guard) { /* We've got a truncated attribute. */ Info(slide, 0x201, ((char *)slide, "warning: truncated attribute\n")); break; } /* write_attr() doesn't return count of written bytes now (Syllable 0.5.3)... */ nError = write_attr(fd, attr_name, O_TRUNC, fa_info.ai_type, attr_data, 0, fa_info.ai_size); if (nError < 0) { Info(slide, 0x201, ((char *)slide, "warning: error writing file attribute\n")); } } close(fd); return retval; } static void setAtheOSexfield(const char *path, uch *extra_field) { uch *ptr = extra_field; ush id = 0; ush size = 0; ulg full_size = 0; uch flags = 0; uch *attrbuff = NULL; int retval; if( extra_field == NULL ) { return; } /* Collect the data from the extra field buffer. */ id = makeword(ptr); ptr += 2; /* we don't use this... */ size = makeword(ptr); ptr += 2; full_size = makelong(ptr); ptr += 4; flags = *ptr; ptr++; /* Do a little sanity checking. */ if (flags & EB_BE_FL_BADBITS) { /* corrupted or unsupported */ Info(slide, 0x201, ((char *)slide, "Unsupported flags set for this AtheOS extra field, skipping.\n")); return; } if (size <= EB_BEOS_HLEN) { /* corrupted, unsupported, or truncated */ Info(slide, 0x201, ((char *)slide, "AtheOS extra field is %d bytes, should be at least %d.\n", size, EB_BEOS_HLEN)); return; } if (full_size < (size - EB_BEOS_HLEN)) { Info(slide, 0x201, ((char *)slide, "Skipping attributes: AtheOS extra field is %d bytes, " "data size is %ld.\n", size - EB_BEOS_HLEN, full_size)); return; } /* Find the AtheOS file attribute data. */ if (flags & EB_BE_FL_UNCMPR) { /* Uncompressed data */ attrbuff = ptr; } else { /* Compressed data */ attrbuff = (uch *)malloc( full_size ); if (attrbuff == NULL) { /* No memory to uncompress attributes */ Info(slide, 0x201, ((char *)slide, "Can't allocate memory to uncompress file attributes.\n")); return; } retval = memextract(__G__ attrbuff, full_size, ptr, size - EB_BEOS_HLEN); if( retval != PK_OK ) { /* error uncompressing attributes */ Info(slide, 0x201, ((char *)slide, "Error uncompressing file attributes.\n")); /* Some errors here might not be so bad; we should expect */ /* some truncated data, for example. If the data was */ /* corrupt, we should _not_ attempt to restore the attrs */ /* for this file... there's no way to detect what attrs */ /* are good and which are bad. */ free (attrbuff); return; } } /* Now attempt to set the file attributes on the extracted file. */ retval = set_file_attrs(path, attrbuff, (off_t)full_size); if (retval != EOK) { Info(slide, 0x201, ((char *)slide, "Error writing file attributes.\n")); } /* Clean up, if necessary */ if (attrbuff != ptr) { free(attrbuff); } return; }