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/*
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/*
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 * This file is part of pkg (SvarDOS)
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 * This file is part of pkg (SvarDOS)
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 * Copyright (C) 2012-2021 Mateusz Viste.
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 * Copyright (C) 2012-2024 Mateusz Viste.
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 *
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 *
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 * Simple library providing functions to unzip files from zip archives.
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 * Simple library providing functions to unzip files from zip archives.
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 */
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 */
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#include <stdio.h>     /* printf(), FILE, fclose()... */
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#include <stdio.h>     /* printf(), FILE, fclose()... */
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#include <utime.h>     /* utime() */
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#include <utime.h>     /* utime() */
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#include <unistd.h>   /* unlink() */
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#include <unistd.h>   /* unlink() */
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#include "crc32.h"
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#include "crc32.h"
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#include "helpers.h"
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#include "helpers.h"
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#include "kprintf.h"
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#include "inf.h"   /* INFLATE support */
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#include "inf.h"   /* INFLATE support */
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#include "svarlang.lib\svarlang.h"
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#include "libunzip.h"  /* include self for control */
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#include "libunzip.h"  /* include self for control */
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/* converts a "DOS format" timestamp into unix timestamp. The DOS timestamp is constructed an array of 4 bytes, that contains following data at the bit level:
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/* converts a "DOS format" timestamp into unix timestamp. The DOS timestamp is constructed an array of 4 bytes, that contains following data at the bit level:
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      filenamelen <<= 8;
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      filenamelen <<= 8;
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      filenamelen |= hdrbuff[22];
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      filenamelen |= hdrbuff[22];
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      /* create new entry and link it into the list */
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      /* create new entry and link it into the list */
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      newentry = calloc(sizeof(struct ziplist) + filenamelen, 1);
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      newentry = calloc(sizeof(struct ziplist) + filenamelen, 1);
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      if (newentry == NULL) {
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      if (newentry == NULL) {
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        kitten_printf(2, 14, "libunzip"); /* "Out of memory! (%s)" */
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        outputnl(svarlang_str(2,14)); /* Out of memory! */
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        outputnl("");
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        zip_freelist(&reslist);
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        zip_freelist(&reslist);
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        break;
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        break;
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      }
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      }
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      newentry->nextfile = reslist;
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      newentry->nextfile = reslist;
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      newentry->flags = 0;
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      newentry->flags = 0;
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      fseek(fd, (filenamelen + extrafieldlen + compfilelen + filecommentlen), SEEK_CUR);
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      fseek(fd, (filenamelen + extrafieldlen + compfilelen + filecommentlen), SEEK_CUR);
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    } else if (entrysig == 0x08074b50ul) { /* Data descriptor header */
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    } else if (entrysig == 0x08074b50ul) { /* Data descriptor header */
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      /* no need to read the header we just have to skip it */
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      /* no need to read the header we just have to skip it */
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      fseek(fd, 12, SEEK_CUR); /* the header is 3x4 bytes (CRC + compressed len + uncompressed len) */
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      fseek(fd, 12, SEEK_CUR); /* the header is 3x4 bytes (CRC + compressed len + uncompressed len) */
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    } else { /* unknown sig */
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    } else { /* unknown sig */
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      kitten_printf(8, 1, entrysig); /* "unknown zip sig: 0x%08lx" */
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      outputnl("");
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      zip_freelist(&reslist);
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      zip_freelist(&reslist);
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      break;
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      break;
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    }
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    }
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  }
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  }
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  /* if we got no central directory record, the file is incomplete */
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  /* if we got no central directory record, the file is incomplete */