/*--------------------------------------------------------------------------- atari.c Atari-specific routines for use with Info-ZIP's UnZip 5.1 and later. Contains: readdir() do_wild() <-- generic enough to put in fileio.c? mapattr() mapname() checkdir() mkdir() close_outfile() version() Due to the amazing MiNT library being very, very close to BSD unix's library, I'm using the unix.c as a base for this. Note: If you're not going to compile this with the MiNT libraries (for GNU C, Turbo C, Pure C, Lattice C, or Heat & Serve C), you're going to be in for some nasty work. Most of the modifications in this file were made by Chris Herborth (cherborth@semprini.waterloo-rdp.on.ca) and /should/ be marked with [cjh]. ---------------------------------------------------------------------------*/ #define UNZIP_INTERNAL #include "unzip.h" #include /* MiNTlibs has dirent [cjh] */ 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 char *wildspec; /* only used first time on a given dir */ { static DIR *dir = (DIR *)NULL; static char *dirname, *wildname, matchname[FILNAMSIZ]; static int firstcall=TRUE, 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 (firstcall) { /* first call: must initialize everything */ firstcall = FALSE; /* break the wildspec into a directory part and a wildcard filename */ if ((wildname = strrchr(wildspec, '/')) == (char *)NULL) { dirname = "."; dirnamelen = 1; have_dirname = FALSE; wildname = wildspec; } else { ++wildname; /* point at character after '/' */ dirnamelen = wildname - wildspec; if ((dirname = (char *)malloc(dirnamelen+1)) == (char *)NULL) { Info(slide, 0x201, ((char *)slide, "warning: can't allocate wildcard buffers\n")); strcpy(matchname, wildspec); return matchname; /* but maybe filespec was not a wildcard */ } strncpy(dirname, wildspec, dirnamelen); dirname[dirnamelen] = '\0'; /* terminate for strcpy below */ have_dirname = TRUE; } if ((dir = opendir(dirname)) != (DIR *)NULL) { while ((file = readdir(dir)) != (struct dirent *)NULL) { if (file->d_name[0] == '.' && wildname[0] != '.') continue; /* Unix: '*' and '?' do not match leading dot */ /* Need something here for TOS filesystem? [cjh] */ if (match(file->d_name, wildname, 0)) { /* 0 == case sens. */ if (have_dirname) { strcpy(matchname, dirname); strcpy(matchname+dirnamelen, file->d_name); } else strcpy(matchname, file->d_name); return matchname; } } /* if we get to here directory is exhausted, so close it */ closedir(dir); dir = (DIR *)NULL; } /* return the raw wildspec in case that works (e.g., directory not * searchable, but filespec was not wild and file is readable) */ strcpy(matchname, wildspec); return matchname; } /* last time through, might have failed opendir but returned raw wildspec */ if (dir == (DIR *)NULL) { firstcall = TRUE; /* nothing left to try--reset for new wildspec */ if (have_dirname) free(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)) != (struct dirent *)NULL) /* May need special TOS handling here. [cjh] */ if (match(file->d_name, wildname, 0)) { /* 0 == don't ignore case */ if (have_dirname) { /* strcpy(matchname, dirname); */ strcpy(matchname+dirnamelen, file->d_name); } else strcpy(matchname, file->d_name); return matchname; } closedir(dir); /* have read at least one dir entry; nothing left */ dir = (DIR *)NULL; firstcall = TRUE; /* reset for new wildspec */ if (have_dirname) free(dirname); return (char *)NULL; } /* end function do_wild() */ #endif /* !SFX */ /**********************/ /* Function mapattr() */ /**********************/ int mapattr(__G) __GDEF { ulg tmp = G.crec.external_file_attributes; switch (G.pInfo->hostnum) { case UNIX_: case ATARI_: /* minix filesystem under MiNT on Atari [cjh] */ case VMS_: G.pInfo->file_attr = (unsigned)(tmp >> 16); return 0; case AMIGA_: tmp = (unsigned)(tmp>>17 & 7); /* Amiga RWE bits */ G.pInfo->file_attr = (unsigned)(tmp<<6 | tmp<<3 | tmp); break; /* all remaining cases: expand MSDOS read-only bit into write perms */ case FS_FAT_: case FS_HPFS_: case FS_NTFS_: case MAC_: case TOPS20_: default: tmp = !(tmp & 1) << 1; /* read-only bit --> write perms bits */ 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) /* return 0 if no error, 1 if caution (filename */ __GDEF /* truncated), 2 if warning (skip file because */ int renamed; /* dir doesn't exist), 3 if error (skip file), */ /* 10 if no memory (skip file) */ { char pathcomp[FILNAMSIZ]; /* path-component buffer */ char *pp, *cp=(char *)NULL; /* character pointers */ char *lastsemi=(char *)NULL; /* pointer to last semi-colon in pathcomp */ int quote = FALSE; /* flags */ int error = 0; register unsigned workch; /* hold the character being tested */ /*--------------------------------------------------------------------------- Initialize various pointers and counters and stuff. ---------------------------------------------------------------------------*/ if (G.pInfo->vollabel) return IZ_VOL_LABEL; /* can't set disk volume labels in Unix */ /* can create path as long as not just freshening, or if user told us */ G.create_dirs = (!G.fflag || renamed); created_dir = FALSE; /* not yet */ /* user gave full pathname: don't prepend rootpath */ renamed_fullpath = (renamed && (*G.filename == '/')); if (checkdir(__G__ (char *)NULL, INIT) == 10) return 10; /* initialize path buffer, unless no memory */ *pathcomp = '\0'; /* initialize translation buffer */ pp = pathcomp; /* point to translation buffer */ if (G.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) { if (quote) { /* if character quoted, */ *pp++ = (char)workch; /* include it literally */ quote = FALSE; } else switch (workch) { case '/': /* can assume -j flag not given */ *pp = '\0'; if ((error = checkdir(__G__ pathcomp, APPEND_DIR)) > 1) return error; pp = pathcomp; /* reset conversion buffer for next piece */ lastsemi = (char *)NULL; /* leave directory semi-colons alone */ break; case ';': /* VMS version (or DEC-20 attrib?) */ lastsemi = pp; /* keep for now; remove VMS ";##" */ *pp++ = (char)workch; /* later, if requested */ break; case '\026': /* control-V quote for special chars */ quote = TRUE; /* set flag for next character */ break; #ifdef MTS case ' ': /* change spaces to underscore under */ *pp++ = '_'; /* MTS; leave as spaces under Unix */ break; #endif default: /* allow European characters in filenames: */ if (isprint(workch) || (128 <= workch && workch <= 254)) *pp++ = (char)workch; } /* end switch */ } /* end while loop */ *pp = '\0'; /* done with pathcomp: terminate it */ /* if not saving them, remove VMS version numbers (appended ";###") */ if (!G.V_flag && lastsemi) { pp = lastsemi + 1; while (isdigit((uch)(*pp))) ++pp; if (*pp == '\0') /* only digits between ';' and end: nuke */ *lastsemi = '\0'; } /*--------------------------------------------------------------------------- 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 (created_dir && QCOND2) { Info(slide, 0, ((char *)slide, " creating: %s\n", G.filename)); return IZ_CREATED_DIR; /* set dir time (note trailing '/') */ } return 2; /* dir existed already; don't look for data to extract */ } if (*pathcomp == '\0') { Info(slide, 1, ((char *)slide, "mapname: conversion of %s failed\n", G.filename)); return 3; } checkdir(__G__ pathcomp, APPEND_NAME); /* returns 1 if truncated: care? */ checkdir(__G__ G.filename, GETPATH); return error; } /* end function mapname() */ #if 0 /*========== NOTES ==========*/ extract-to dir: a:path/ buildpath: path1/path2/ ... (NULL-terminated) pathcomp: filename mapname(): loop over chars in zipfile member name checkdir(path component, COMPONENT | CREATEDIR) --> map as required? (d:/tmp/unzip/) (disk:[tmp.unzip.) (d:/tmp/unzip/jj/) (disk:[tmp.unzip.jj.) (d:/tmp/unzip/jj/temp/) (disk:[tmp.unzip.jj.temp.) finally add filename itself and check for existence? (could use with rename) (d:/tmp/unzip/jj/temp/msg.outdir) (disk:[tmp.unzip.jj.temp]msg.outdir) checkdir(name, COPYFREE) --> copy path to name and free space #endif /* 0 */ /***********************/ /* Function checkdir() */ /***********************/ int checkdir(__G__ pathcomp, flag) __GDEF char *pathcomp; int flag; /* * returns: 1 - (on APPEND_NAME) truncated filename * 2 - path doesn't exist, not allowed to create * 3 - path doesn't exist, tried to create and failed; or * path exists and is not a directory, but is supposed to be * 4 - path is too long * 10 - 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; /* SHORT_NAMES required for TOS, but it has to co-exist for minix fs... [cjh] */ #ifdef SHORT_NAMES char *old_end = end; #endif Trace((stderr, "appending dir segment [%s]\n", pathcomp)); while ((*end = *pathcomp++) != '\0') ++end; /* SHORT_NAMES required for TOS, but it has to co-exist for minix fs... [cjh] */ #ifdef SHORT_NAMES /* path components restricted to 14 chars, typically */ if ((end-old_end) > FILENAME_MAX) /* GRR: proper constant? */ *(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. */ if ((end-buildpath) > FILNAMSIZ-3) /* need '/', one-char name, '\0' */ too_long = TRUE; /* check if extracting directory? */ if (stat(buildpath, &G.statbuf)) { /* path doesn't exist */ if (!G.create_dirs) { /* told not to create (freshening) */ free(buildpath); return 2; /* path doesn't exist: nothing to do */ } if (too_long) { Info(slide, 1, ((char *)slide, "checkdir error: path too long: %s\n", buildpath)); free(buildpath); return 4; /* no room for filenames: fatal */ } if (mkdir(buildpath, 0777) == -1) { /* create the directory */ Info(slide, 1, ((char *)slide, "checkdir error: can't create %s\n\ unable to process %s.\n", buildpath, G.filename)); free(buildpath); return 3; /* path didn't exist, tried to create, failed */ } 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", buildpath, G.filename)); free(buildpath); return 3; /* path existed but wasn't dir */ } if (too_long) { Info(slide, 1, ((char *)slide, "checkdir error: path too long: %s\n", buildpath)); free(buildpath); return 4; /* no room for filenames: fatal */ } *end++ = '/'; *end = '\0'; Trace((stderr, "buildpath now = [%s]\n", buildpath)); return 0; } /* end if (FUNCTION == APPEND_DIR) */ /*--------------------------------------------------------------------------- GETPATH: copy full path to the string pointed at by pathcomp, and free buildpath. ---------------------------------------------------------------------------*/ if (FUNCTION == GETPATH) { strcpy(pathcomp, buildpath); Trace((stderr, "getting and freeing path [%s]\n", pathcomp)); free(buildpath); buildpath = end = (char *)NULL; return 0; } /*--------------------------------------------------------------------------- APPEND_NAME: assume the path component is the filename; append it and return without checking for existence. ---------------------------------------------------------------------------*/ if (FUNCTION == APPEND_NAME) { /* SHORT_NAMES required for TOS, but it has to co-exist for minix fs... [cjh] */ #ifdef SHORT_NAMES char *old_end = end; #endif Trace((stderr, "appending filename [%s]\n", pathcomp)); while ((*end = *pathcomp++) != '\0') { ++end; /* SHORT_NAMES required for TOS, but it has to co-exist for minix fs... [cjh] */ #ifdef SHORT_NAMES /* truncate name at 14 characters, typically */ if ((end-old_end) > FILENAME_MAX) /* GRR: proper constant? */ *(end = old_end + FILENAME_MAX) = '\0'; #endif if ((end-buildpath) >= FILNAMSIZ) { *--end = '\0'; Info(slide, 0x201, ((char *)slide, "checkdir warning: path too long; truncating\n\ %s\n -> %s\n", G.filename, buildpath)); return 1; /* filename truncated */ } } Trace((stderr, "buildpath now = [%s]\n", buildpath)); return 0; /* could check for existence here, prompt for new name... */ } /*--------------------------------------------------------------------------- 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 ")); if ((buildpath = (char *)malloc(strlen(G.filename)+rootlen+1)) == (char *)NULL) return 10; if ((rootlen > 0) && !renamed_fullpath) { strcpy(buildpath, rootpath); end = buildpath + rootlen; } else { *buildpath = '\0'; end = buildpath; } Trace((stderr, "[%s]\n", buildpath)); return 0; } /*--------------------------------------------------------------------------- ROOT: if appropriate, store the path in rootpath and create it if neces- sary; 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", pathcomp)); if (pathcomp == (char *)NULL) { rootlen = 0; return 0; } if ((rootlen = strlen(pathcomp)) > 0) { if (pathcomp[rootlen-1] == '/') { pathcomp[--rootlen] = '\0'; } if (rootlen > 0 && (stat(pathcomp, &G.statbuf) || !S_ISDIR(G.statbuf.st_mode))) /* path does not exist */ { if (!G.create_dirs /* || iswild(pathcomp) */ ) { rootlen = 0; return 2; /* skip (or treat as stored file) */ } /* create the directory (could add loop here to scan pathcomp * and create more than one level, but why really necessary?) */ if (mkdir(pathcomp, 0777) == -1) { Info(slide, 1, ((char *)slide, "checkdir: can't create extraction directory: %s\n", pathcomp)); rootlen = 0; /* path didn't exist, tried to create, and */ return 3; /* failed: file exists, or 2+ levels required */ } } if ((rootpath = (char *)malloc(rootlen+2)) == (char *)NULL) { rootlen = 0; return 10; } strcpy(rootpath, pathcomp); rootpath[rootlen++] = '/'; rootpath[rootlen] = '\0'; Trace((stderr, "rootpath now = [%s]\n", rootpath)); } return 0; } #endif /* !SFX || SFX_EXDIR */ /*--------------------------------------------------------------------------- END: free rootpath, immediately prior to program exit. ---------------------------------------------------------------------------*/ if (FUNCTION == END) { Trace((stderr, "freeing rootpath\n")); if (rootlen > 0) free(rootpath); return 0; } return 99; /* should never reach */ } /* end function checkdir() */ /****************************/ /* Function close_outfile() */ /****************************/ void close_outfile(__G) /* GRR: change to return PK-style warning level */ __GDEF { ztimbuf tp; /*--------------------------------------------------------------------------- If symbolic links are supported, allocate a storage area, put the uncom- pressed "data" in it, and create the link. Since we know it's a symbolic link to start with, we shouldn't have to worry about overflowing unsigned ints with unsigned longs. ---------------------------------------------------------------------------*/ /* symlinks allowed on minix filesystems [cjh] * Hopefully this will work properly... We won't bother to try if * MiNT isn't present; the symlink should fail if we're on a TOS * filesystem. * BUG: should we copy the original file to the "symlink" if the * link fails? */ if (G.symlnk) { unsigned ucsize = (unsigned)G.lrec.ucsize; char *linktarget = (char *)malloc((unsigned)G.lrec.ucsize+1); fclose(G.outfile); /* close "data" file... */ G.outfile = fopen(G.filename, FOPR); /* ...and reopen for reading */ if (!linktarget || (fread(linktarget, 1, ucsize, G.outfile) != (int)ucsize)) { Info(slide, 0x201, ((char *)slide, "warning: symbolic link (%s) failed\n", G.filename)); if (linktarget) free(linktarget); fclose(G.outfile); return; } fclose(G.outfile); /* close "data" file for good... */ unlink(G.filename); /* ...and delete it */ linktarget[ucsize] = '\0'; Info(slide, 0, ((char *)slide, "-> %s ", linktarget)); if (symlink(linktarget, G.filename)) /* create the real link */ perror("symlink error"); free(linktarget); return; /* can't set time on symlinks */ } fclose(G.outfile); /*--------------------------------------------------------------------------- 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. ---------------------------------------------------------------------------*/ #ifdef USE_EF_UX_TIME if (G.extra_field && ef_scan_for_izux(G.extra_field, G.lrec.extra_field_length, &tp, NULL) > 0) { TTrace((stderr, "\nclose_outfile: Unix e.f. access time = %ld\n", tp.actime)); TTrace((stderr, "close_outfile: Unix e.f. modif. time = %ld\n", tp.modtime)); } else { tp.actime = tp.modtime = dos_to_unix_time(G.lrec.last_mod_file_date, G.lrec.last_mod_file_time); TTrace((stderr, "\nclose_outfile: modification/access times = %ld\n", tp.modtime)); } #else /* !USE_EF_UX_TIME */ tp.actime = tp.modtime = dos_to_unix_time(G.lrec.last_mod_file_date, G.lrec.last_mod_file_time); TTrace((stderr, "\nclose_outfile: modification/access times = %ld\n", tp.modtime)); #endif /* ?USE_EF_UX_TIME */ /* set the file's access and modification times */ if (utime(G.filename, &tp)) Info(slide, 0x201, ((char *)slide, "warning: can't set the time for %s\n", G.filename)); /*--------------------------------------------------------------------------- Change the file permissions from default ones to those stored in the zipfile. ---------------------------------------------------------------------------*/ #ifndef NO_CHMOD if (chmod(G.filename, 0xffff & G.pInfo->file_attr)) perror("chmod (file attributes) error"); #endif } /* end function close_outfile() */ #ifndef SFX /************************/ /* Function version() */ /************************/ void version(__G) __GDEF { #ifdef __TURBOC__ char buf[40]; #endif sprintf((char *)slide, LoadFarString(CompiledWith), #ifdef __GNUC__ "gcc ", __VERSION__, #else # if 0 "cc ", (sprintf(buf, " version %d", _RELEASE), buf), # else # ifdef __TURBOC__ "Turbo C", (sprintf(buf, " (0x%04x = %d)", __TURBOC__, __TURBOC__), buf), # else "unknown compiler", "", # endif # endif #endif #ifdef __MINT__ "Atari TOS/MiNT", #else "Atari TOS", #endif " (Atari ST/TT/Falcon030)", #ifdef __DATE__ " on ", __DATE__ #else "", "" #endif ); (*G.message)((zvoid *)&G, slide, (ulg)strlen((char *)slide), 0); } /* end function version() */ #endif /* !SFX */