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- /*------------------------------------------------------------------------
-
- amiga.c
-
- Amiga-specific routines for use with Info-ZIP's UnZip 5.1 and later.
- See History.5xx for revision history.
-
- Contents: mapattr()
- mapname()
- do_wild()
- checkdir()
- cmptime()
- invlocal()
- close_outfile()
- _abort() (Aztec C only)
- version()
-
- ------------------------------------------------------------------------*/
-
-
- #include "unzip.h"
-
- /* Globular varibundus */
-
- static int created_dir; /* used in mapname(), checkdir() */
- static int renamed_fullpath; /* ditto */
- #define PERMS 0777
- #define MKDIR(path,mode) mkdir(path)
-
-
- #ifndef S_ISCRIPT /* not having one implies you have none */
- # define S_IARCHIVE 0020 /* not modified since this bit was last set */
- # define S_IREAD 0010 /* can be opened for reading */
- # define S_IWRITE 0004 /* can be opened for writing */
- # define S_IDELETE 0001 /* can be deleted */
- #endif /* S_ISCRIPT */
-
- #ifndef S_IRWD
- # define S_IRWD 0015 /* useful combo of Amiga privileges */
- #endif /* !S_IRWD */
-
- #ifndef S_IHIDDEN
- # define S_IHIDDEN 0200 /* hidden supported in future AmigaDOS (someday) */
- #endif /* !S_HIDDEN */
-
-
-
- /**********************/
- /* Function mapattr() */
- /**********************/
-
- int mapattr(void) /* Amiga version */
- {
- ulg tmp = crec.external_file_attributes;
-
-
- /* Amiga attributes = hsparwed = hidden, script, pure, archive,
- * read, write, execute, delete */
-
- switch (pInfo->hostnum) {
- case AMIGA_:
- if ((tmp & 1) == (tmp>>18 & 1))
- tmp ^= 0x000F0000; /* PKAZip compatibility kluge */
- /* turn off archive bit for restored Amiga files */
- pInfo->file_attr = (unsigned)((tmp>>16) & (~S_IARCHIVE));
- break;
-
- case UNIX_: /* preserve read, write, execute: use logical-OR of */
- case VMS_: /* user, group, and other; if writable, set delete bit */
- tmp >>= 16;
- tmp = (( tmp>>6 | tmp>>3 | tmp) & 07) << 1;
- pInfo->file_attr = (unsigned)(tmp&S_IWRITE? tmp|S_IDELETE : tmp);
- break;
-
- /* all other platforms: assume read-only bit in DOS half of attribute
- * word is set correctly ==> will become READ or READ+WRITE+DELETE */
- case FS_FAT_:
- case FS_HPFS_: /* can add S_IHIDDEN check to MSDOS/OS2/NT eventually */
- case FS_NTFS_:
- case MAC_:
- case ATARI_:
- case TOPS20_:
- default:
- pInfo->file_attr = (unsigned)(tmp&1? S_IREAD : S_IRWD);
- break;
-
- } /* end switch (host-OS-created-by) */
-
- pInfo->file_attr &= 0xff; /* mask off all but lower eight bits */
- return 0;
-
- } /* end function mapattr() */
-
-
-
-
- /************************/
- /* Function mapname() */
- /************************/
-
- int mapname(renamed) /* return 0 if no error, 1 if caution (filename trunc), */
- int renamed; /* 2 if warning (skip file because dir doesn't exist), */
- { /* 3 if error (skip file), 10 if no memory (skip file) */
- char pathcomp[FILNAMSIZ]; /* path-component buffer */
- char *pp, *cp=NULL; /* character pointers */
- char *lastsemi = 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.
- ---------------------------------------------------------------------------*/
-
- /* can create path as long as not just freshening, or if user told us */
- create_dirs = (!fflag || renamed);
-
- created_dir = FALSE; /* not yet */
-
- /* user gave full pathname: don't prepend rootpath */
- renamed_fullpath = (renamed && strchr(filename, ':'));
-
- if (checkdir((char *)NULL, INIT) == 10)
- return 10; /* initialize path buffer, unless no memory */
-
- *pathcomp = '\0'; /* initialize translation buffer */
- pp = pathcomp; /* point to translation buffer */
- if (jflag) /* junking directories */
- cp = (char *)strrchr(filename, '/');
- if (cp == NULL) /* no '/' or not junking dirs */
- cp = 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(pathcomp, APPEND_DIR)) > 1)
- return error;
- pp = pathcomp; /* reset conversion buffer for next piece */
- lastsemi = 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;
-
- default:
- /* allow European characters in filenames: */
- if (isprint(workch) || (128 <= workch && workch <= 255))
- *pp++ = (char)workch;
- } /* end switch */
-
- } /* end while loop */
-
- *pp = '\0'; /* done with pathcomp: terminate it */
-
- /* if not saving them, remove with VMS version numbers (appended ";###") */
- if (!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 (filename[strlen(filename) - 1] == '/') {
- if (checkdir(filename, GETPATH) == 1) {
- fprintf(stderr, "pathname too long: truncat{ed/ing}\n");
- return 1; /* GRR: NEEDS WORK! (do checking only when appending) */
- }
- if (created_dir && QCOND2) {
- fprintf(stdout, " creating: %s\n", 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') {
- fprintf(stderr, "mapname: conversion of %s failed\n", filename);
- return 3;
- }
-
- if ((error = checkdir(pathcomp, APPEND_NAME)) == 1) {
- /* GRR: OK if truncated here: warn and continue */
- /* (warn in checkdir?) */
- }
- checkdir(filename, GETPATH);
-
- return error;
-
- } /* end function mapname() */
-
-
- static int ispattern(char *p)
- {
- register char c;
- while (c = *p++)
- if (c == '\\') {
- if (!*++p)
- return FALSE;
- } else if (c == '?' || c == '*')
- return TRUE;
- else if (c == '[') {
- for (;;) {
- if (!(c = *p++))
- return FALSE;
- else if (c == '\\') {
- if (!*++p)
- return FALSE;
- } else if (c == ']')
- return TRUE;
- }
- }
- return FALSE;
- }
-
- /**********************/
- /* Function do_wild() */ /* for porting: dir separator; match(ignore_case) */
- /**********************/
-
- char *do_wild(wildspec)
- char *wildspec; /* only used first time on a given dir */
- {
- static DIR *dir = NULL;
- static char *dirname, *wildname, matchname[FILNAMSIZ];
- static int firstcall=TRUE, have_dirname, dirnamelen;
- struct dirent *file;
- BPTR lok = 0;
- /* 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;
- /* avoid needless readdir() scans: */
- if (!ispattern(wildspec) || (lok = Lock(wildspec, ACCESS_READ))) {
- if (lok) UnLock(lok);
- have_dirname = FALSE;
- strcpy(matchname, wildspec);
- return matchname;
- }
-
- /* break the wildspec into a directory part and a wildcard filename */
- if ((wildname = strrchr(wildspec, '/')) == NULL
- && (wildname = strrchr(wildspec, ':')) == NULL) {
- dirname = ""; /* current dir */
- dirnamelen = 1;
- have_dirname = FALSE;
- wildname = wildspec;
- } else {
- ++wildname; /* point at character after '/' or ':' */
- dirnamelen = wildname - wildspec;
- if ((dirname = (char *)malloc(dirnamelen+1)) == NULL) {
- fprintf(stderr, "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;
- have_dirname = TRUE;
- }
-
- if ((dir = opendir(dirname)) != NULL) {
- while ((file = readdir(dir)) != NULL) {
- if (match(file->d_name, wildname, 1)) { /* case insensitive */
- 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 = 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 == 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)) != NULL)
- 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 = NULL;
- firstcall = TRUE; /* reset for new wildspec */
- if (have_dirname)
- free(dirname);
- return (char *)NULL;
-
- } /* end function do_wild() */
-
-
-
- /***********************/
- /* Function checkdir() */
- /***********************/
-
- int checkdir(pathcomp, flag)
- char *pathcomp;
- int flag;
- /*
- * returns: 1 - (on APPEND_xxx) truncated path component
- * 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
- * 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.
- ---------------------------------------------------------------------------*/
-
- /* GRR: check path length after each segment: warn about truncation */
-
- if (FUNCTION == APPEND_DIR) {
- Trace((stderr, "appending dir segment [%s]\n", pathcomp));
- while ((*end = *pathcomp++))
- ++end;
- if (stat(buildpath, &statbuf)) { /* path doesn't exist */
- if (!create_dirs) { /* told not to create (freshening) */
- free(buildpath);
- return 2; /* path doesn't exist: nothing to do */
- }
- if (MKDIR(buildpath, 0777) == -1) { /* create the directory */
- fprintf(stderr,
- "checkdir: can't create %s\n unable to process %s.\n"
- , buildpath, filename);
- fflush(stderr);
- free(buildpath);
- return 3; /* path didn't exist, tried to create, failed */
- }
- created_dir = TRUE;
- } else if (!S_ISDIR(statbuf.st_mode)) {
- fprintf(stderr, "checkdir: %s exists but is not a directory\n\
- unable to process %s.\n", buildpath, filename);
- fflush(stderr);
- free(buildpath);
- return 3; /* path existed but wasn't dir */
- }
- *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); /* DO ERROR CHECKING: TOO LONG? */
- Trace((stderr, "getting and freeing path [%s]\n", pathcomp));
- free(buildpath);
- buildpath = end = NULL;
- return 0;
- }
-
- /*---------------------------------------------------------------------------
- APPEND_NAME: assume the path component is the filename; append it and
- return without checking for existence.
- ---------------------------------------------------------------------------*/
-
- if (FUNCTION == APPEND_NAME) { /* DO ERROR CHECKING */
- Trace((stderr, "appending filename [%s]\n", pathcomp));
- while ((*end = *pathcomp++))
- ++end;
- 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.
- ---------------------------------------------------------------------------*/
-
- if (FUNCTION == INIT) {
- Trace((stderr, "initializing buildpath to "));
- if ((buildpath = (char *)malloc(strlen(filename)+rootlen+1)) == 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 == NULL) {
- rootlen = 0;
- return 0;
- }
- if ((rootlen = strlen(pathcomp)) > 0) {
- int had_trailing_pathsep=FALSE;
-
- if (pathcomp[rootlen-1] == '/') {
- pathcomp[--rootlen] = '\0';
- had_trailing_pathsep = TRUE;
- }
- if (rootlen > 0 && (stat(pathcomp, &statbuf) ||
- !S_ISDIR(statbuf.st_mode))) /* path does not exist */
- {
- if (!create_dirs /* || iswild(pathcomp) */
- #ifdef OLD_EXDIR
- || !had_trailing_pathsep
- #endif
- ) {
- rootlen = 0;
- return 2; /* 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) {
- fprintf(stderr,
- "checkdir: can't create extraction directory: %s\n",
- pathcomp);
- fflush(stderr);
- 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)) == NULL) {
- rootlen = 0;
- return 10;
- }
- strcpy(rootpath, pathcomp);
- if (rootpath[rootlen - 1] != ':')
- 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 cmptime() */
- /**********************/
-
- /* cmptime() clone pinched from from Zip1.9h,
- * by Mark Adler, Jean-loup Gailly, et al., circa 1991.
- * Incorporated into UnZip 5.1d by John Bush
- */
-
- int cmptime(p, q)
- struct tm *p, *q; /* times to compare */
- /* Return negative if time p is before time q, positive if after, and
- zero if the same */
- {
- int r; /* temporary variable */
-
- if (p == NULL)
- return -1;
- else if ((r = p->tm_year - q->tm_year) != 0)
- return r;
- else if ((r = p->tm_mon - q->tm_mon) != 0)
- return r;
- else if ((r = p->tm_mday - q->tm_mday) != 0)
- return r;
- else if ((r = p->tm_hour - q->tm_hour) != 0)
- return r;
- else if ((r = p->tm_min - q->tm_min) != 0)
- return r;
- else
- return p->tm_sec - q->tm_sec;
- }
-
-
- /***********************/
- /* Function invlocal() */
- /***********************/
-
- /* mktime() clone pinched from from Zip1.9h,
- * by Mark Adler and Jean-loup Gailly, et.al, circa 1991.
- * Incorporated into UnZip 5.1d by John Bush
- */
- time_t invlocal(t)
- struct tm *t; /* time to convert */
- /* Find inverse of localtime() using bisection. This routine assumes that
- time_t is an integer type, either signed or unsigned. The expectation
- is that sometime before the year 2038, time_t will be made a 64-bit
- integer, and this routine will still work. */
- {
- time_t i; /* midpoint of current root range */
- time_t l; /* lower end of root range */
- time_t u; /* upper end of root range */
-
- /* Bracket the root [0,largest time_t]. Note: if time_t is a 32-bit signed
- integer, then the upper bound is GMT 1/19/2038 03:14:07, after which all
- the Unix systems in the world come to a grinding halt. Either that, or
- all those systems will suddenly find themselves transported to December
- of 1901 ... */
- l = 0;
- u = 1;
- while (u < (u << 1))
- u = (u << 1) + 1;
-
- /* Find the root */
- while (u - l > 1)
- {
- i = l + ((u - l) >> 1);
- if (cmptime(localtime(&i), t) <= 0)
- l = i;
- else
- u = i;
- }
- return l;
- }
-
-
-
- /**************************************/
- /* Function close_outfile() */
- /**************************************/
- /* this part differs slightly with Zip */
- /*-------------------------------------*/
-
- void close_outfile(void)
- {
- struct tm t; /* good ole time structure */
- time_t u[2]; /* mean ole time stamp */
- ulg dd,dt; /* DOS format time stamps */
- LONG FileDate();
- time_t invlocal();
-
- if (cflag) /* can't set time on stdout */
- return;
-
- /* close the file *before* setting its time under AmigaDos */
-
- fclose(outfile);
-
- /* assign date and time to local variables */
-
- dd = lrec.last_mod_file_date;
- dt = lrec.last_mod_file_time;
-
- /* Convert DOS time to time_t format in (time_t)u */
-
- t.tm_sec = (int) (dt << 1) & 0x3e;
- t.tm_min = (int) (dt >> 5) & 0x3f;
- t.tm_hour = (int) (dt >> 11) & 0x1f;
-
- t.tm_mday = (int) (dd & 0x1f);
- t.tm_mon = ((int) (dd >> 5) & 0xf ) - 1;
- t.tm_year = ((int) (dd >> 9) & 0x7f) + 80;
-
- /* invlocal() is equivalent to mktime() */
-
- u[0] = u[1] = invlocal(&t);
-
- #ifdef DEBUG
- fprintf (stderr,"\nclose_outfile(): u=%s\n",ctime(&u[0]));
- #endif
-
- if (!FileDate(filename, u))
- fprintf(stderr, "warning: can't set the time for %s\n", filename);
-
- /* set file perms after closing (not done at creation)--see mapattr() */
-
- chmod(filename, pInfo->file_attr);
-
- } /* end function close_outfile() */
-
-
- /********************************************************************/
- /* Load filedate as a separate external file; it's used by Zip, too.*/
- /* */
- #include "amiga/filedate.c" /* */
- /* */
- /********************************************************************/
-
- /**************** for Aztec, do linewise with stat.c ****************/
-
- #ifdef AZTEC_C
- # include "amiga/stat.c"
- /* this is the exact same stat.c used for Aztec by Zip */
-
- # include <stdio.h>
- # include "crypt.h"
-
- void _abort(void) /* called when ^C is pressed */
- {
- echon();
- close_leftover_open_dirs();
- fflush(stdout);
- fputs("\n^C\n", stderr);
- exit(1);
- }
- #endif /* AZTEC_C */
-
-
- #ifndef SFX
-
- /************************/
- /* Function version() */
- /************************/
-
-
- /* NOTE: the following include depends upon the environment
- * variable $Workbench to be set correctly. (Set by
- * default, by kickstart during startup)
- */
- int WBversion = (int)
- #include "ENV:Workbench"
- ;
-
- void version()
- {
- extern char Far CompiledWith[];
-
- /* Define buffers. */
-
- char buf1[16]; /* compiler name */
- char buf2[16]; /* revstamp */
- char buf3[16]; /* OS */
- char buf4[16]; /* Date */
- /* char buf5[16]; /* Time */
-
- /* format "with" name strings */
-
- #ifdef AMIGA
- # ifdef __SASC
- strcpy(buf1,"SAS/C ");
- # else
- # ifdef LATTICE
- strcpy(buf1,"Lattice C ");
- # else
- # ifdef AZTEC_C
- strcpy(buf1,"Manx Aztec C ");
- # else
- strcpy(buf1,"UNKNOWN ");
- # endif
- # endif
- # endif
- /* "under" */
- sprintf(buf3,"AmigaDOS v%d",WBversion);
- #else
- strcpy(buf1,"Unknown compiler ");
- strcpy(buf3,"Unknown OS");
- #endif
-
- /* Define revision, date, and time strings.
- * NOTE: Do not calculate run time, be sure to use time compiled.
- * Pass these strings via your makefile if undefined.
- */
-
- #if defined(__VERSION__) && defined(__REVISION__)
- sprintf(buf2,"version %d.%d",__VERSION__,__REVISION__);
- #else
- # ifdef __VERSION__
- sprintf(buf2,"version %d",__VERSION__);
- # else
- sprintf(buf2,"unknown version");
- # endif
- #endif
-
- #ifdef __DATE__
- sprintf(buf4," on %s",__DATE__);
- #else
- strcpy(buf4," unknown date");
- #endif
-
- /******
- #ifdef __TIME__
- sprintf(buf5," at %s",__TIME__);
- #else
- strcpy(buf5," unknown time");
- #endif
- ******/
-
- /* Print strings using "CompiledWith" mask defined in unzip.c (used by all).
- * ("Compiled with %s%s under %s%s%s%s.")
- */
-
- printf(LoadFarString(CompiledWith),
- buf1,
- buf2,
- buf3,
- buf4,
- /* buf5, */ "",
- "" ); /* buf6 not used */
-
- } /* end function version() */
-
- #endif /* !SFX */
-