| 0,0 → 1,266 |
|---|
| /* |
| * This file is part of pkg (SvarDOS) |
| * Copyright (C) 2012-2022 Mateusz Viste |
| */ |
| |
| #include <ctype.h> /* toupper() */ |
| #include <stdio.h> |
| #include <stdlib.h> /* system() */ |
| #include <string.h> /* strcpy() */ |
| #include <unistd.h> /* read() */ |
| #include <sys/types.h> /* struct utimbuf */ |
| |
| #include "helpers.h" /* slash2backslash(), strtolower() */ |
| #include "fileexst.h" |
| #include "kprintf.h" |
| #include "libunzip.h" /* zip_listfiles()... */ |
| #include "showinst.h" /* pkg_loadflist() */ |
| #include "svarlang.lib\svarlang.h" |
| |
| #include "pkginst.h" /* include self for control */ |
| |
| |
| /* validate a filename (8+3, no weird characters, etc). returns 0 on success, |
| * nonzero otherwise. */ |
| static int validfilename(const char *fname) { |
| int i, i2; |
| char *validchars = "!#$%&'()-@^_`{}~"; |
| int elemlen = 0; |
| int elemmaxlen = 8; /* switches from 8 to 3 depending wheter I am analyzing |
| a filename or an extension */ |
| /* look for invalid chars in the entire string, and check the length of the |
| * element at the same time */ |
| for (i = 0; fname[i] != 0; i++) { |
| /* director separators are threated specially */ |
| if (fname[i] == '\\') { |
| elemlen = 0; |
| elemmaxlen = 8; |
| continue; |
| } |
| /* '.' switches the check into extension mode */ |
| if (fname[i] == '.') { |
| if (elemlen == 0) return(-1); /* a file must have a base name */ |
| if (elemmaxlen == 3) return(-2); /* a file cannot have two extensions */ |
| elemlen = 0; |
| elemmaxlen = 3; |
| continue; |
| } |
| /* check that the element is not too long */ |
| if (++elemlen > elemmaxlen) return(-3); |
| /* look for valid characters */ |
| if ((fname[i] >= 'a') && (fname[i] <= 'z')) continue; |
| if ((fname[i] >= 'A') && (fname[i] <= 'Z')) continue; |
| if ((fname[i] >= '0') && (fname[i] <= '9')) continue; |
| if ((fname[i] & 128) != 0) continue; /* high bytes are okay (NLS) */ |
| /* look for other valid characters */ |
| for (i2 = 0; validchars[i2] != 0; i2++) { |
| if (fname[i] == validchars[i2]) break; |
| } |
| if (validchars[i2] != 0) continue; |
| /* if we are here, then the character is invalid */ |
| return(-4); |
| } |
| /* all checks passed */ |
| return(0); |
| } |
| |
| |
| /* returns 0 if pkgname is not installed, non-zero otherwise */ |
| int is_package_installed(const char *pkgname, const char *dosdir) { |
| char fname[512]; |
| sprintf(fname, "%s\\packages\\%s.lst", dosdir, pkgname); |
| return(fileexists(fname)); /* file exists -> package is installed */ |
| } |
| |
| |
| /* checks that pkgname is NOT installed. return 0 on success, non-zero otherwise. */ |
| static int validate_package_not_installed(const char *pkgname, const char *dosdir) { |
| if (is_package_installed(pkgname, dosdir) != 0) { |
| kitten_printf(3, 18, pkgname); /* "Package %s is already installed! You might want to use the 'update' action." */ |
| puts(""); |
| return(-1); |
| } |
| return(0); |
| } |
| |
| |
| /* find a filename in a flist linked list, and returns a pointer to it */ |
| static struct flist_t *findfileinlist(struct flist_t *flist, const char *fname) { |
| while (flist != NULL) { |
| if (strcasecmp(flist->fname, fname) == 0) return(flist); |
| flist = flist->next; |
| } |
| return(NULL); |
| } |
| |
| |
| /* prepare a package for installation. this is mandatory before actually installing it! |
| * returns a pointer to the zip file's index on success, NULL on failure. the **zipfd pointer is updated with a file descriptor to the open zip file to install. */ |
| struct ziplist *pkginstall_preparepackage(const char *pkgname, const char *zipfile, int flags, FILE **zipfd, const char *dosdir, const struct customdirs *dirlist) { |
| char fname[256]; |
| char appinfofile[256]; |
| int appinfopresence; |
| char *shortfile; |
| struct ziplist *ziplinkedlist = NULL, *curzipnode, *prevzipnode; |
| struct flist_t *flist = NULL; |
| |
| sprintf(appinfofile, "appinfo\\%s.lsm", pkgname); /* Prepare the appinfo/xxxx.lsm filename string for later use */ |
| |
| /* check if not already installed, if already here, print a message "you might want to use update instead" |
| * of course this must not be done if we are in the process of upgrading said package */ |
| if (((flags & PKGINST_UPDATE) == 0) && (validate_package_not_installed(pkgname, dosdir) != 0)) { |
| return(NULL); |
| } |
| |
| /* Now let's check the content of the zip file */ |
| |
| *zipfd = fopen(zipfile, "rb"); |
| if (*zipfd == NULL) { |
| puts(svarlang_str(3, 8)); /* "ERROR: Invalid zip archive! Package not installed." */ |
| goto RAII; |
| } |
| ziplinkedlist = zip_listfiles(*zipfd); |
| if (ziplinkedlist == NULL) { |
| puts(svarlang_str(3, 8)); /* "ERROR: Invalid zip archive! Package not installed." */ |
| goto RAII; |
| } |
| /* if updating, load the list of files belonging to the current package */ |
| if ((flags & PKGINST_UPDATE) != 0) { |
| flist = pkg_loadflist(pkgname, dosdir); |
| } |
| /* Verify that there's no collision with existing local files, look for the appinfo presence */ |
| appinfopresence = 0; |
| prevzipnode = NULL; |
| for (curzipnode = ziplinkedlist; curzipnode != NULL;) { |
| /* change all slashes to backslashes, and switch into all-lowercase */ |
| slash2backslash(curzipnode->filename); |
| strtolower(curzipnode->filename); |
| /* remove 'directory' ZIP entries to avoid false alerts about directory already existing */ |
| if ((curzipnode->flags & ZIP_FLAG_ISADIR) != 0) { |
| curzipnode->filename[0] = 0; /* mark it "empty", will be removed in a short moment */ |
| } |
| /* is it a "link file"? skip it - link files are no longer supported */ |
| if (fdnpkg_strcasestr(curzipnode->filename, "links\\") == curzipnode->filename) { |
| curzipnode->filename[0] = 0; /* in fact, I just mark the file as 'empty' on the filename - see later below */ |
| } |
| |
| if (curzipnode->filename[0] == 0) { /* ignore empty filenames (maybe it was empty originally, or has been emptied because it's a dropped source or link) */ |
| if (prevzipnode == NULL) { /* take the item out of the list */ |
| ziplinkedlist = curzipnode->nextfile; |
| free(curzipnode); /* free the item */ |
| curzipnode = ziplinkedlist; |
| } else { |
| prevzipnode->nextfile = curzipnode->nextfile; |
| free(curzipnode); /* free the item */ |
| curzipnode = prevzipnode->nextfile; |
| } |
| continue; /* go to the next item */ |
| } |
| /* validate that the file has a valid filename (8+3, no shady chars...) */ |
| if (validfilename(curzipnode->filename) != 0) { |
| puts(svarlang_str(3, 23)); /* "ERROR: Package contains an invalid filename:" */ |
| printf(" %s\n", curzipnode->filename); |
| goto RAII_ERR; |
| } |
| /* look out for collisions with already existing files (unless we are |
| * updating the package and the local file belongs to it */ |
| shortfile = computelocalpath(curzipnode->filename, fname, dosdir, dirlist); |
| strcat(fname, shortfile); |
| if ((findfileinlist(flist, fname) == NULL) && (fileexists(fname) != 0)) { |
| puts(svarlang_str(3, 9)); /* "ERROR: Package contains a file that already exists locally:" */ |
| printf(" %s\n", fname); |
| goto RAII_ERR; |
| } |
| /* abort if any entry is encrypted */ |
| if ((curzipnode->flags & ZIP_FLAG_ENCRYPTED) != 0) { |
| puts(svarlang_str(3, 20)); /* "ERROR: Package contains an encrypted file:" */ |
| printf(" %s\n", curzipnode->filename); |
| goto RAII_ERR; |
| } |
| /* abort if any file is compressed with an unsupported method */ |
| if ((curzipnode->compmethod != ZIP_METH_STORE) && (curzipnode->compmethod != ZIP_METH_DEFLATE)) { /* unsupported compression method */ |
| kitten_printf(8, 2, curzipnode->compmethod); /* "ERROR: Package contains a file compressed with an unsupported method (%d):" */ |
| puts(""); |
| printf(" %s\n", curzipnode->filename); |
| goto RAII_ERR; |
| } |
| if (strcmp(curzipnode->filename, appinfofile) == 0) appinfopresence = 1; |
| prevzipnode = curzipnode; |
| curzipnode = curzipnode->nextfile; |
| } |
| /* if appinfo file not found, this is not a real FreeDOS package */ |
| if (appinfopresence != 1) { |
| kitten_printf(3, 12, appinfofile); /* "ERROR: Package do not contain the %s file! Not a valid SvarDOS package." */ |
| puts(""); |
| goto RAII_ERR; |
| } |
| |
| goto RAII; |
| |
| RAII_ERR: |
| zip_freelist(&ziplinkedlist); |
| ziplinkedlist = NULL; |
| if ((zipfd != NULL) && (*zipfd != NULL)) { |
| fclose(*zipfd); |
| *zipfd = NULL; |
| } |
| |
| RAII: |
| pkg_freeflist(flist); |
| return(ziplinkedlist); |
| } |
| |
| |
| /* install a package that has been prepared already. returns 0 on success, |
| * or a negative value on error, or a positive value on warning */ |
| int pkginstall_installpackage(const char *pkgname, const char *dosdir, const struct customdirs *dirlist, struct ziplist *ziplinkedlist, FILE *zipfd) { |
| char buff[256]; |
| char fulldestfilename[256]; |
| char packageslst[32]; |
| char *shortfile; |
| long filesextractedsuccess = 0, filesextractedfailure = 0; |
| struct ziplist *curzipnode; |
| FILE *lstfd; |
| |
| sprintf(packageslst, "packages\\%s.lst", pkgname); /* Prepare the packages/xxxx.lst filename string for later use */ |
| |
| /* create the %DOSDIR%/packages directory, just in case it doesn't exist yet */ |
| sprintf(buff, "%s\\packages\\", dosdir); |
| mkpath(buff); |
| |
| /* open the lst file */ |
| sprintf(buff, "%s\\%s", dosdir, packageslst); |
| lstfd = fopen(buff, "wb"); /* opening it in binary mode, because I like to have control over line terminators (CR/LF) */ |
| if (lstfd == NULL) { |
| kitten_printf(3, 10, buff); /* "ERROR: Could not create %s!" */ |
| puts(""); |
| return(-2); |
| } |
| |
| /* write list of files in zip into the lst, and create the directories structure */ |
| for (curzipnode = ziplinkedlist; curzipnode != NULL; curzipnode = curzipnode->nextfile) { |
| int unzip_result; |
| if ((curzipnode->flags & ZIP_FLAG_ISADIR) != 0) continue; /* skip directories */ |
| shortfile = computelocalpath(curzipnode->filename, buff, dosdir, dirlist); /* substitute paths to custom dirs */ |
| /* log the filename to packages\pkg.lst */ |
| fprintf(lstfd, "%s%s\r\n", buff, shortfile); |
| /* create the path, just in case it doesn't exist yet */ |
| mkpath(buff); |
| sprintf(fulldestfilename, "%s%s", buff, shortfile); |
| /* Now unzip the file */ |
| unzip_result = zip_unzip(zipfd, curzipnode, fulldestfilename); |
| if (unzip_result != 0) { |
| kitten_printf(8, 3, curzipnode->filename, fulldestfilename); /* "ERROR: failed extracting '%s' to '%s'!" */ |
| printf(" [%d]\n", unzip_result); |
| filesextractedfailure += 1; |
| } else { |
| printf(" %s -> %s\n", curzipnode->filename, buff); |
| filesextractedsuccess += 1; |
| } |
| } |
| fclose(lstfd); |
| |
| kitten_printf(3, 19, pkgname, filesextractedsuccess, filesextractedfailure); /* "Package %s installed: %ld files extracted, %ld errors." */ |
| puts(""); |
| return(filesextractedfailure); |
| } |