mirror of
https://github.com/yabwon/SAS_PACKAGES.git
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cc25b76144
SAS Packages Framework, version 20250710
Changes:
- Framework's code cleanup: all uses of the autocall `%lowcase()` macro were removed or replaced by `%sysfunc(lowcase(...))` call.
- Formatting of the default MIT license text in the `%generatePackage()` macro was changed.
- The `sourcePath=` parameter in the `%installPackage()` macro now allows both quoted and un-quoted address.
- Documentation updated.
187 lines
10 KiB
SAS
187 lines
10 KiB
SAS
/*+verifyPackage+*/
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/*** HELP START ***/
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%macro verifyPackage(
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packageName /* name of a package,
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e.g. myPackage,
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required and not null */
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, path = %sysfunc(pathname(packages)) /* location of a package,
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by default it looks for
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location of "packages" fileref */
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, hash = /* The SHA256 hash digest for
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the package generated by
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hashing_file() function, SAS 9.4M6 */
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)/secure
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/*** HELP END ***/
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des = 'Macro to verify SAS package with the hash digest, version 20250710. Run %verifyPackage() for help info.'
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;
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%if (%superq(packageName) = ) OR (%qupcase(&packageName.) = HELP) %then
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%do;
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%local options_tmp ;
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%let options_tmp = ls=%sysfunc(getoption(ls))ps=%sysfunc(getoption(ps))
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%sysfunc(getoption(notes)) %sysfunc(getoption(source))
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msglevel=%sysfunc(getoption(msglevel))
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;
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options NOnotes NOsource ls=MAX ps=MAX msglevel=N;
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%put ;
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%put #################################################################################;
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%put ### This is short help information for the `verifyPackage` macro #;
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%put #-------------------------------------------------------------------------------#;
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%put # #;
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%put # Macro to verify SAS package with it hash digest, version `20250710` #;
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%put # #;
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%put # A SAS package is a zip file containing a group #;
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%put # of SAS codes (macros, functions, data steps generating #;
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%put # data, etc.) wrapped up together and embedded inside the zip. #;
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%put # #;
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%put # The `%nrstr(%%verifyPackage())` macro generate package SHA256 hash #;
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%put # and compares it with the one provided by the user. #;
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%put # #;
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%put # #;
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%put # *Minimum SAS version required for the process is 9.4M6.* #;
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%put # #;
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%put #### Parameters: #;
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%put # #;
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%put # 1. `packageName` Name of a package, e.g. myPackage, #;
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%put # Required and not null, default use case: #;
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%put # `%nrstr(%%loadPackage(myPackage))`. #;
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%put # If empty displays this help information. #;
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%put # #;
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%put # - `hash=` A value of the package `SHA256` hash. #;
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%put # Provided by the user. #;
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%put # #;
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%put # - `path=` Location of a package. By default it looks for #;
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%put # location of the "packages" fileref, i.e. #;
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%put # `%nrstr(%%sysfunc(pathname(packages)))` #;
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%put # #;
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%put #-------------------------------------------------------------------------------#;
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%put # #;
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%put # Visit: `https://github.com/yabwon/SAS_PACKAGES/tree/main/SPF/Documentation` #;
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%put # to learn more. #;
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%put # #;
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%put #### Example ####################################################################;
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%put # #;
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%put # Enabling the SAS Package Framework #;
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%put # from the local directory and installing & loading #;
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%put # the SQLinDS package from the Internet. #;
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%put # #;
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%put # Assume that the `SPFinit.sas` file #;
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%put # is located in the "C:/SAS_PACKAGES/" folder. #;
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%put # #;
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%put # Run the following code in your SAS session: #;
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%put ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~sas;
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%put %nrstr( filename packages "C:/SAS_PACKAGES"; %%* set-up a directory for packages; );
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%put %nrstr( %%include packages(SPFinit.sas); %%* enable the framework; );
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%put ;
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%put %nrstr( %%installPackage(SQLinDS) %%* install the package from the Internet; );
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%put %nrstr( %%verifyPackage%(SQLinDS, %%* verify the package with provided hash; );
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%put %nrstr( hash=HDA478ANJ3HKHRY327FGE88HF89VH89HFFFV73GCV98RF390VB4%) );
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%put ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~;
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%put #################################################################################;
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%put ;
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options &options_tmp.;
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%GOTO ENDofverifyPackage;
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%end;
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%local ls_tmp ps_tmp notes_tmp source_tmp stimer_tmp fullstimer_tmp msglevel_tmp mautocomploc_tmp;
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%let ls_tmp = %sysfunc(getoption(ls));
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%let ps_tmp = %sysfunc(getoption(ps));
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%let notes_tmp = %sysfunc(getoption(notes));
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%let source_tmp = %sysfunc(getoption(source));
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%let stimer_tmp = %sysfunc(getoption(stimer));
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%let fullstimer_tmp = %sysfunc(getoption(fullstimer));
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%let msglevel_tmp = %sysfunc(getoption(msglevel));
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%let mautocomploc_tmp = %sysfunc(getoption(mautocomploc));
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options NOnotes NOsource ls=MAX ps=MAX NOfullstimer NOstimer msglevel=N NOmautocomploc;
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%local _PackageFileref_;
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data _null_;
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call symputX("_PackageFileref_", "P" !! put(MD5(lowcase("&packageName.")), hex7. -L), "L");
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run;
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/* when the packages reference is multi-directory search for the first one containing the package */
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data _null_;
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exists = 0;
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length packages $ 32767 p $ 4096;
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packages = resolve(symget("path"));
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if char(packages,1) ^= "(" then packages = quote(strip(packages)); /* for paths with spaces */
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do i = 1 to kcountw(packages, "()", "QS");
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p = dequote(kscanx(packages, i, "()", "QS"));
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exists + fileexist(catx("/", p, lowcase("&packageName.") !! "zip")); /* check on zip files only! */
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if exists then leave;
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end;
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if exists then call symputx("path", p, "L");
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run;
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filename &_PackageFileref_.
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/* put location of package myPackageFile.zip here */
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"&path./%sysfunc(lowcase(&packageName.)).zip"
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;
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%if %sysfunc(fexist(&_PackageFileref_.)) %then
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%do;
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/* create hash SHA256 id *+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
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%local HASHING_FILE_exist;
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%let HASHING_FILE_exist = 0;
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%if %sysfunc(exist(sashelp.vfunc, VIEW)) %then
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%do;
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data _null_;
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set sashelp.vfunc(keep=fncname);
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where fncname = "HASHING_FILE";
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call symputX('HASHING_FILE_exist', 1, "L");
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stop;
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run;
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%end;
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%if &HASHING_FILE_exist. = 1 %then
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%do;
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options notes;
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filename &_PackageFileref_. list;
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data _null_;
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length providedHash $ 100;
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providedHash = strip(symget("hash"));
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select;
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when ( 'F*' = upcase(substr(providedHash,1,2)) ) /* F = file digest */
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SHA256 = 'F*' !! HASHING_FILE("SHA256", pathname("&_PackageFileref_.",'F'), 0);
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when ( 'C*' = upcase(substr(providedHash,1,2)) ) /* C = content digest */
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SHA256 = 'C*' !! HASHING_FILE("SHA256", "&_PackageFileref_.", 4);
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otherwise /* legacy approach, without C or F, digest value equivalent to C */
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SHA256 = HASHING_FILE("SHA256", "&_PackageFileref_.", 4);
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end;
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put "Provided Hash: " providedHash;
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put "SHA256 digest: " SHA256;
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put " ";
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if upcase(SHA256) = upcase(providedHash) then
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do;
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put "NOTE: Package verification SUCCESSFUL.";
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put "NOTE- Generated hash is EQUAL to the provided one.";
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end;
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else
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do;
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put "ERROR: Package verification FAILED!!";
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put "ERROR- Generated hash is DIFFERENT than the provided one.";
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put "ERROR- Confirm if the package is genuine.";
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end;
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run;
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%let HASHING_FILE_exist = 0;
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%end;
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%else
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%put WARNING: Verification impossible! Minimum SAS version required for the process is 9.4M6. ;
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/*-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-*/
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%end;
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%else %put ERROR:[&sysmacroname] File "&path./&packageName..zip" does not exist!;
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filename &_PackageFileref_. clear;
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options ls = &ls_tmp. ps = &ps_tmp.
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¬es_tmp. &source_tmp.
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&stimer_tmp. &fullstimer_tmp.
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msglevel=&msglevel_tmp. &mautocomploc_tmp.;
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%ENDofverifyPackage:
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%mend verifyPackage;
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/**/
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