Zig

Extract XML from FatturaPA .p7m

See more Digital Signatures Examples

Demonstrates how to verify the signature and extract the XML from a FatturaPA .p7m file. 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.

    const bd = try chilkat.BinData.init();
    defer bd.deinit();
    bd.loadFile("qa_data/p7m/IT01879020517_abc.xml.p7m") catch {
        std.debug.print("Failed to load the .p7m file\n", .{});
        return;
    };

    const crypt = try chilkat.Crypt2.init();
    defer crypt.deinit();

    // Verify and extrct the payload contained within the .p7m.
    // In this case, the payload is the FatturaPA XML.
    // If successful, the resulting bd will contain only the XML.
    crypt.opaqueVerifyBd(bd) catch {
        std.debug.print("{s}\n", .{try crypt.getLastErrorText(alloc)});
        std.debug.print("Failed to extract and verify.\n", .{});
        return;
    };

    // Save the XML to a file.
    bd.writeFile("qa_output/zIT01879020517_abc.xml") catch {};

    // Alternatively, load into an XML object and emit.
    const xml = try chilkat.Xml.init();
    defer xml.deinit();
    xml.loadXml(try bd.getString(alloc, "utf-8")) catch {};

    std.debug.print("{s}\n", .{try xml.getXml(alloc)});
}