Subversion Repositories SvarDOS

/*

 * This file is part of PKGINST (SvarDOS)

 * Copyright (C) 2013-2021 Mateusz Viste. All rights reserved.

 */

#include <stdio.h>

#include <ctype.h>    /* tolower() */

#include <stdlib.h>   /* atoi(), qsort() - not using it after all, redefining it manually later */

#include <string.h>   /* strlen() */

#include <sys/types.h>

#include <direct.h> /* opendir() and friends */

#include "fdnpkg.h"

#include "fileexst.h"

#include "getdelim.h"

#include "helpers.h"  /* fdnpkg_strcasestr(), slash2backslash()... */

#include "kprintf.h"

#include "libunzip.h"  /* zip_freelist()... */

#include "lsm.h"

#include "pkginst.h"

#include "pkgrem.h"

#include "rtrim.h"

#include "showinst.h"  /* include self for control */

#include "version.h"

/* this is a wrapper around strcasecmp(), to be used by qsort() */

static int strcompare(const void *str1, const void *str2) {

  char **s1 = (char **)str1;

  char **s2 = (char **)str2;

  return(strcasecmp(*s1, *s2));

}

static int loadinstpkglist(char **packagelist, char **packagelist_ver, int packagelist_maxlen, const char *filterstr, const char *dosdir) {

  DIR *dp;

  int packagelist_len = 0, x;

  struct dirent *ep;

  #define verstr_maxlen 64

  char pkgdir[512], lsmfilename[1024], verstr[verstr_maxlen];

  sprintf(pkgdir, "%s\\packages", dosdir);

  dp = opendir(pkgdir);

  if (dp != NULL) {

    while ((ep = readdir(dp)) != NULL) {

      if (ep->d_name[0] != '.') { /* ignore '.', '..', and hidden directories */

        if (strlen(ep->d_name) > 4) {

          int tlen = strlen(ep->d_name);

          if ((ep->d_name[tlen - 4] != '.') || (tolower(ep->d_name[tlen - 3]) != 'l') || (tolower(ep->d_name[tlen - 2]) != 's') || (tolower(ep->d_name[tlen - 1]) != 't')) continue;  /* if it's not an .lst file, skip it silently */

          if (filterstr != NULL) {

            if (fdnpkg_strcasestr(ep->d_name, filterstr) == NULL) continue; /* if it's not matching the non-NULL filter, skip it */

          }

          if (packagelist_len >= packagelist_maxlen) {

            closedir(dp);

            return(-1); /* if not enough place in the list - return an error */

          }

          packagelist[packagelist_len] = strdup(ep->d_name);

          packagelist[packagelist_len][strlen(packagelist[packagelist_len]) - 4] = 0; /* cut out the .lst extension */

          packagelist_len += 1;

        }

      }

    }

    closedir(dp);

    qsort(packagelist, packagelist_len, sizeof (char **), strcompare); /* sort the package list */

    for (x = 0; x < packagelist_len; x++) {

      /* for each package, load the metadata from %DOSDIR\APPINFO\*.lsm */

      sprintf(lsmfilename, "%s\\appinfo\\%s.lsm", dosdir, packagelist[x]);

      if (readlsm(lsmfilename, verstr, verstr_maxlen) != 0) sprintf(verstr, "(unknown version)");

      packagelist_ver[x] = strdup(verstr);

    }

    return(packagelist_len);

  } else {

    kitten_printf(9, 0, "Error: Could not access the %s directory.", pkgdir);

    puts("");

    return(-1);

  }

}

#define packagelist_maxlen 1024

void showinstalledpkgs(const char *filterstr, const char *dosdir) {

  char *packagelist[packagelist_maxlen];

  char *packagelist_ver[packagelist_maxlen];

  int packagelist_len, x;

  /* load the list of packages */

  packagelist_len = loadinstpkglist(packagelist, packagelist_ver, packagelist_maxlen, filterstr, dosdir);   /* Populate the packages list */

  if (packagelist_len < 0) return;

  if (packagelist_len == 0) {

    kitten_puts(5, 0, "No package matched the search.");

    return;

  }

  /* iterate through all packages */

  for (x = 0; x < packagelist_len; x++) {

    /* print the package/version couple on screen */

    printf("%s %s\n", packagelist[x], packagelist_ver[x]);

  }

}

/* frees a linked list of filenames */

void pkg_freeflist(struct flist_t *flist) {

  while (flist != NULL) {

    struct flist_t *victim = flist;

    flist = flist->next;

    free(victim);

  }

}

/* returns a linked list of the files that belong to package pkgname */

struct flist_t *pkg_loadflist(const char *pkgname, const char *dosdir) {

  struct flist_t *res = NULL, *newnode;

  FILE *fd;

  char *lineptr;

  char buff[512];

  int getdelimlen, fnamelen;

  size_t getdelimcount = 0;

  sprintf(buff, "%s\\packages\\%s.lst", dosdir, pkgname);

  if (fileexists(buff) == 0) { /* file does not exist */

    kitten_printf(9, 1, "Error: Local package %s not found.", pkgname);

    puts("");

    return(NULL);

  }

  fd = fopen(buff, "rb");

  if (fd == NULL) {

    kitten_puts(4, 1, "Error opening lst file!");

    return(NULL);

  }

  /* iterate through all lines of the file */

  for (;;) {

    lineptr = NULL;

    getdelimlen = getdelim(&lineptr, &getdelimcount, '\n', fd);

    if (getdelimlen < 0) { /* EOF */

      free(lineptr);

      break;

    }

    rtrim(lineptr);  /* right-trim the filename */

    slash2backslash(lineptr); /* change all / to \ */

    if ((lineptr[0] == 0) || (lineptr[0] == '\r') || (lineptr[0] == '\n')) continue; /* skip empty lines */

    if (lineptr[strlen(lineptr) - 1] == '\\') continue; /* skip directories */

    if ((lineptr[0] == '\\') || (lineptr[1] == ':')) { /* this is an absolute path */

      fnamelen = snprintf(buff, sizeof(buff), "%s", lineptr);

    } else { /* else it's a relative path starting at %dosdir% */

      fnamelen = snprintf(buff, sizeof(buff), "%s\\%s\n", dosdir, lineptr);

    }

    free(lineptr); /* free the memory occupied by the line */

    /* add the new node to the result */

    newnode = malloc(sizeof(struct flist_t) + fnamelen);

    if (newnode == NULL) {

      kitten_printf(2, 14, "Out of memory! (%s)", "malloc failure");

      continue;

    }

    newnode->next = res;

    strcpy(newnode->fname, buff);

    res = newnode;

  }

  fclose(fd);

  return(res);

}

/* Prints files owned by a package */

int listfilesofpkg(const char *pkgname, const char *dosdir) {

  struct flist_t *flist, *flist_ptr;

  /* load the list of files belonging to pkgname */

  flist = pkg_loadflist(pkgname, dosdir);

  if (flist == NULL) return(-1);

  /* display each filename on screen */

  for (flist_ptr = flist; flist_ptr != NULL; flist_ptr = flist_ptr->next) {

    puts(flist_ptr->fname);

  }

  /* free the list of files */

  pkg_freeflist(flist);

  return(0);

}