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campo-sirio/zip/unzip/acorn/acorn.c
alex f0d81ffd1c This commit was generated by cvs2svn to compensate for changes in r5402, 
which included commits to RCS files with non-trunk default branches.

git-svn-id: svn://10.65.10.50/trunk@5403 c028cbd2-c16b-5b4b-a496-9718f37d4682
1997-10-20 15:51:36 +00:00

750 lines
25 KiB
C
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/*---------------------------------------------------------------------------
acorn.c
RISCOS-specific routines for use with Info-ZIP's UnZip 5.2 and later.
Contains: do_wild() <-- generic enough to put in fileio.c?
mapattr()
mapname()
checkdir()
mkdir()
isRISCOSexfield()
setRISCOSexfield()
printRISCOSexfield()
close_outfile()
version()
---------------------------------------------------------------------------*/
#define UNZIP_INTERNAL
#include "^.unzip.h"
#include "riscos.h"
#define FTYPE_FFF (1<<17) /* set filetype to &FFF when extracting */
static int created_dir; /* used in mapname(), checkdir() */
static int renamed_fullpath; /* ditto */
extern int mkdir(char *path, int mode);
#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 */
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)
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 VMS_:
case ACORN_:
G.pInfo->file_attr = (unsigned)(tmp >> 16);
break;
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 ATARI_: /* (used to set = 0666) */
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) */
G.pInfo->file_attr&=0xFFFF;
G.pInfo->file_attr|=(0xFFDu<<20);
if (G.filename[strlen(G.filename)-4]==',') {
int ftype=strtol(G.filename+strlen(G.filename)-3,NULL,16)&0xFFF;
G.pInfo->file_attr&=0x000FFFFF;
G.pInfo->file_attr|=(ftype<<20);
}
else if (G.crec.internal_file_attributes & 1) {
G.pInfo->file_attr&=0x000FFFFF;
G.pInfo->file_attr|=(0xFFFu<<20);
}
return 0;
} /* end function mapattr() */
/************************/
/* Function mapname() */
/************************/
/* return 0 if no error, 1 if caution (filename */
int mapname(__G__ renamed) /* truncated), 2 if warning (skip file because */
__GDEF /* dir doesn't exist), 3 if error (skip file), */
int renamed; /* or 10 if out of memory (skip file) */
{ /* [also IZ_VOL_LABEL, IZ_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 */
int quote = FALSE; /* flags */
int error = 0;
register unsigned workch; /* hold the character being tested */
char *checkswap=NULL; /* pointer the the extension to check or NULL */
/*---------------------------------------------------------------------------
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 */
checkswap=NULL; /* reset checking when starting a new leafname */
break;
case ';': /* VMS version (or DEC-20 attrib?) */
lastsemi = pp;
*pp++ = ';'; /* keep for now; remove VMS ";##" */
break; /* later, if requested */
case '\026': /* control-V quote for special chars */
quote = TRUE; /* set flag for next character */
break;
case ' ': /* change spaces to hard-spaces */
*pp++ = 160;
break;
case ':': /* change ':' to '<27>' */
*pp++ = '<EFBFBD>';
break;
case '&': /* change '&' to 'E' */
*pp++ = 'E';
break;
case '@': /* change '@' to 'A' */
*pp++ = 'A';
break;
case '.':
*pp++ = '/';
checkswap=pp;
break;
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) {
if (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;
}
if (checkswap!=NULL) {
if (checkext(checkswap)) {
if ((error = checkdir(__G__ checkswap, APPEND_DIR)) > 1)
return error;
*(checkswap-1)=0; /* remove extension from pathcomp */
}
}
if (pathcomp[strlen(pathcomp)-4]==',') {
/* remove the filetype extension */
/* the filetype should be already set by mapattr() */
pathcomp[strlen(pathcomp)-4]=0;
}
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: 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;
#ifdef SHORT_NAMES
char *old_end = end;
#endif
Trace((stderr, "appending dir segment [%s]\n", pathcomp));
while ((*end = *pathcomp++) != '\0')
++end;
#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));
fflush(stderr);
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++ = '.'; /************* was '/' *************/
*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) {
#ifdef SHORT_NAMES
char *old_end = end;
#endif
Trace((stderr, "appending filename [%s]\n", pathcomp));
while ((*end = *pathcomp++) != '\0') {
++end;
#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] == '.') { /****** was '/' ********/
pathcomp[--rootlen] = '\0';
}
if (rootlen > 0 && (stat(pathcomp, &G.statbuf) ||
!S_ISDIR(G.statbuf.st_mode))) {
/* path does not exist */
if (!G.create_dirs /* || isshexp(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++] = '.'; /*********** was '/' *************/
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 mkdir() */
/********************/
int mkdir(path, mode)
char *path;
int mode; /* ignored */
/*
* returns: 0 - successful
* -1 - failed (errno not set, however)
*/
{
return (SWI_OS_File_8(path) == NULL)? 0 : -1;
}
/*********************************/
/* extra_field-related functions */
/*********************************/
int isRISCOSexfield(void *extra_field)
{
if (extra_field!=NULL) {
extra_block *block=(extra_block *)extra_field;
return(block->ID==SPARKID && (block->size==24 || block->size==20) && block->ID_2==SPARKID_2);
}
else
return FALSE;
}
void setRISCOSexfield(char *path, void *extra_field)
{
if (extra_field!=NULL) {
extra_block *block=(extra_block *)extra_field;
SWI_OS_File_1(path,block->loadaddr,block->execaddr,block->attr);
}
}
void printRISCOSexfield(int isdir, void *extra_field)
{
extra_block *block=(extra_block *)extra_field;
printf("\n This file has RISC OS file informations in the local extra field.\n");
if (isdir) {
/* I prefer not to print this string... should change later... */
/* printf(" The file is a directory.\n");*/
}
else if ((block->loadaddr & 0xFFF00000) != 0xFFF00000) {
printf(" Load address: %.8X\n",block->loadaddr);
printf(" Exec address: %.8X\n",block->execaddr);
}
else {
/************* should change this to use OS_FSControl 18 to get filetype string ************/
char tmpstr[16];
char ftypestr[32];
int flen;
sprintf(tmpstr,"File$Type_%03x",(block->loadaddr & 0x000FFF00) >> 8);
if (SWI_OS_ReadVarVal(tmpstr,ftypestr,32,&flen)==NULL) {
ftypestr[flen]=0;
printf(" Filetype: %s (&%.3X)\n",ftypestr,(block->loadaddr & 0x000FFF00) >> 8);
}
else {
printf(" Filetype: &%.3X\n",(block->loadaddr & 0x000FFF00) >> 8);
}
}
printf(" Access: ");
if (block->attr & (1<<3))
printf("L");
if (block->attr & (1<<0))
printf("W");
if (block->attr & (1<<1))
printf("R");
printf("/");
if (block->attr & (1<<4))
printf("w");
if (block->attr & (1<<5))
printf("r");
printf("\n\n");
}
/****************************/
/* Function close_outfile() */
/****************************/
void close_outfile(__G)
__GDEF
{
fclose(G.outfile);
if (isRISCOSexfield(G.extra_field)) {
setRISCOSexfield(G.filename, G.extra_field);
}
else {
int loadaddr,execaddr,attr;
int mode=G.pInfo->file_attr&0xffff; /* chmod equivalent mode */
time_t m_time;
#ifdef USE_EF_UT_TIME
iztimes z_utime;
#endif
#ifdef USE_EF_UT_TIME
if (G.extra_field &&
(ef_scan_for_izux(G.extra_field, G.lrec.extra_field_length, 0,
&z_utime, NULL) & EB_UT_FL_MTIME)) {
TTrace((stderr, "close_outfile: Unix e.f. modif. time = %ld\n",
z_utime.mtime));
m_time = z_utime.mtime;
} else
#endif /* USE_EF_UT_TIME */
m_time = dos_to_unix_time(G.lrec.last_mod_file_date,
G.lrec.last_mod_file_time);
/* set the file's modification time */
SWI_OS_File_5(G.filename,NULL,&loadaddr,NULL,NULL,&attr);
loadaddr=0xfff00000U | ((((m_time>>8) * 100)>>24) + 0x33);
execaddr=m_time * 100 + 0x6e996a00U;
loadaddr|=((G.pInfo->file_attr&0xFFF00000) >> 12);
attr=(attr&0xffffff00) | ((mode&0400) >> 8) | ((mode&0200) >> 6) |
((mode&0004) << 2) | ((mode&0002) << 4);
SWI_OS_File_1(G.filename,loadaddr,execaddr,attr);
}
} /* end function close_outfile() */
#ifndef SFX
/************************/
/* Function version() */
/************************/
void version(__G)
__GDEF
{
sprintf((char *)slide, LoadFarString(CompiledWith),
#ifdef __GNUC__
"gcc ", __VERSION__,
#else
# ifdef __CC_NORCROFT
"Norcroft ", "cc",
# else
"cc", "",
# endif
#endif
"RISC OS",
" (Acorn Computers Ltd)",
#ifdef __DATE__
" on ", __DATE__
#else
"", ""
#endif
);
(*G.message)((zvoid *)&G, slide, (ulg)strlen((char *)slide), 0);
} /* end function version() */
#endif /* !SFX */
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