Zig

Convert CRL PEM to XML

See more PEM Examples

Loads a CRL (Certificate Revocation List) from the PEM file format and converts to XML to allow for visual examination and parsing.

Note: This example requires Chilkat v9.5.0.77 or greater.

Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example requires Chilkat v9.5.0.77 or greater.
    const pem = try chilkat.Pem.init();
    defer pem.deinit();

    pem.setVerboseLogging(true);
    pem.loadPemFile("qa_data/crl/sampleCrl.pem", "password_not_used") catch {
        std.debug.print("{s}\n", .{try pem.getLastErrorText(alloc)});
        return;
    };

    const num_crls = pem.getNumCrls();
    var i: i32 = 0;

    const asn = try chilkat.Asn.init();
    defer asn.deinit();
    const xml = try chilkat.Xml.init();
    defer xml.deinit();
    while (i < num_crls) {
        // Get the CRL as base64 (multi-line)
        const crl_base64 = pem.getEncodedItem(alloc, "crl", "", "base64_mime", i) catch {
            std.debug.print("{s}\n", .{try pem.getLastErrorText(alloc)});
            return;
        };

        std.debug.print("{s}\n", .{crl_base64});

        asn.loadEncoded(crl_base64, "base64") catch {
            std.debug.print("{s}\n", .{try asn.getLastErrorText(alloc)});
            return;
        };

        // Convert ASN.1 to XML and load into xml and re-emit for pretty printing..
        xml.loadXml(try asn.asnToXml(alloc)) catch {};
        std.debug.print("{s}\n", .{try xml.getXml(alloc)});

        // Use this online tool to generate parsing code from CRL XML:
        // Generate Parsing Code from XML

        std.debug.print("-------------------------------------\n", .{});
        i = i + 1;
    }
}