PureBasic
PureBasic
IMAP Read PEC Email of Aruba and Extract the Invoice XML Files
See more Email Object Examples
IMAP Read PEC Email of Aruba and Extract the Invoice XML Files.Chilkat PureBasic Downloads
IncludeFile "CkImap.pb"
IncludeFile "CkBinData.pb"
IncludeFile "CkMessageSet.pb"
IncludeFile "CkMime.pb"
IncludeFile "CkEmail.pb"
IncludeFile "CkXml.pb"
IncludeFile "CkCrypt2.pb"
IncludeFile "CkStringBuilder.pb"
Procedure ChilkatExample()
success.i = 0
; This example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.
imap.i = CkImap::ckCreate()
If imap.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
; Connect using TLS.
CkImap::setCkSsl(imap, 1)
CkImap::setCkPort(imap, 993)
success = CkImap::ckConnect(imap,"imap.example.com")
If success = 0
Debug CkImap::ckLastErrorText(imap)
CkImap::ckDispose(imap)
ProcedureReturn
EndIf
; Authenticate
success = CkImap::ckLogin(imap,"email_account_login","email_account_password")
If success = 0
Debug CkImap::ckLastErrorText(imap)
CkImap::ckDispose(imap)
ProcedureReturn
EndIf
; Select an IMAP mailbox
success = CkImap::ckSelectMailbox(imap,"Inbox/postacert")
If success = 0
Debug CkImap::ckLastErrorText(imap)
CkImap::ckDispose(imap)
ProcedureReturn
EndIf
; Search for messages having "POSTA CERTIFICATA: Invio File" in the subject.
fetchUids.i = 1
messageSet.i = CkMessageSet::ckCreate()
If messageSet.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkImap::ckQueryMbx(imap,"SUBJECT " + Chr(34) + "POSTA CERTIFICATA: Invio File" + Chr(34),fetchUids,messageSet)
If success = 0
Debug CkImap::ckLastErrorText(imap)
CkImap::ckDispose(imap)
CkMessageSet::ckDispose(messageSet)
ProcedureReturn
EndIf
If CkMessageSet::ckCount(messageSet) < 1
Debug "No messages found."
CkImap::ckDispose(imap)
CkMessageSet::ckDispose(messageSet)
ProcedureReturn
EndIf
; For our example, we'll process only the 1st email in the messageSet.
; Download the MIME source of the email into a StringBuilder object.
email.i = CkEmail::ckCreate()
If email.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkImap::ckFetchEmail(imap,0,CkMessageSet::ckGetId(messageSet,0),CkMessageSet::ckHasUids(messageSet),email)
If success = 0
Debug CkImap::ckLastErrorText(imap)
CkImap::ckDispose(imap)
CkMessageSet::ckDispose(messageSet)
CkEmail::ckDispose(email)
ProcedureReturn
EndIf
; The email should contain an attached email.
; The Invoice XML is contained within the attached email.
attachedEmail.i = CkEmail::ckCreate()
If attachedEmail.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkEmail::ckGetAttachedEmail(email,0,attachedEmail)
If success = 0
Debug CkEmail::ckLastErrorText(email)
CkImap::ckDispose(imap)
CkMessageSet::ckDispose(messageSet)
CkEmail::ckDispose(email)
CkEmail::ckDispose(attachedEmail)
ProcedureReturn
EndIf
; Get the MIME of the attached email..
sbMime.i = CkStringBuilder::ckCreate()
If sbMime.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkEmail::ckGetMimeSb(attachedEmail,sbMime)
; Load it into a Chilkat MIME object.
mime.i = CkMime::ckCreate()
If mime.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkMime::ckLoadMimeSb(mime,sbMime)
; Examine the structure of the MIME.
Debug CkMime::ckGetStructure(mime,"text")
; The MIME has this structure:
; multipart/mixed
; application/octet-stream
; application/octet-stream <-- This is where the XML is contained. It is within an opaque signature.
; text/plain
; The 2nd application/octet-stream MIME header looks like this:
; ------=_Part_329673_-1348225228.1579889273592
; Content-Type: application/octet-stream; name="SM99999_99aaa.xml.p7m"
; Content-Transfer-Encoding: base64
; Content-Disposition: attachment; filename="SM99999_99aaa.xml.p7m"
; Let's get the binary content of the .p7m
bdP7m.i = CkBinData::ckCreate()
If bdP7m.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
; Get the 2nd sub-part, at index 1 because index 0 is the 1st sub-part.
mimeP7m.i = CkMime::ckCreate()
If mimeP7m.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkMime::ckPartAt(mime,1,mimeP7m)
If success = 0
Debug CkMime::ckLastErrorText(mime)
CkImap::ckDispose(imap)
CkMessageSet::ckDispose(messageSet)
CkEmail::ckDispose(email)
CkEmail::ckDispose(attachedEmail)
CkStringBuilder::ckDispose(sbMime)
CkMime::ckDispose(mime)
CkBinData::ckDispose(bdP7m)
CkMime::ckDispose(mimeP7m)
ProcedureReturn
EndIf
If CkMime::ckLastMethodSuccess(mime) <> 1
Debug "Failed to get 2nd sub-part. Perhaps the MIME does not have a 2nd sub-part?"
CkImap::ckDispose(imap)
CkMessageSet::ckDispose(messageSet)
CkEmail::ckDispose(email)
CkEmail::ckDispose(attachedEmail)
CkStringBuilder::ckDispose(sbMime)
CkMime::ckDispose(mime)
CkBinData::ckDispose(bdP7m)
CkMime::ckDispose(mimeP7m)
ProcedureReturn
EndIf
success = CkMime::ckGetBodyBd(mimeP7m,bdP7m)
; Verify the signature, which also extracts the content contained within the opaque signature.
crypt.i = CkCrypt2::ckCreate()
If crypt.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkCrypt2::ckOpaqueVerifyBd(crypt,bdP7m)
If success = 0
Debug CkCrypt2::ckLastErrorText(crypt)
CkImap::ckDispose(imap)
CkMessageSet::ckDispose(messageSet)
CkEmail::ckDispose(email)
CkEmail::ckDispose(attachedEmail)
CkStringBuilder::ckDispose(sbMime)
CkMime::ckDispose(mime)
CkBinData::ckDispose(bdP7m)
CkMime::ckDispose(mimeP7m)
CkCrypt2::ckDispose(crypt)
ProcedureReturn
EndIf
; The bdP7m now contains the Invoice XML.
; Load it into an XML object.
xml.i = CkXml::ckCreate()
If xml.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkXml::ckLoadBd(xml,bdP7m,1)
Debug CkXml::ckGetXml(xml)
; We have XML such as the following:
;
; <?xml version="1.0" encoding="windows-1252"?>
; <?xml-stylesheet type="text/xsl" href="fatturapa_v1.2.xsl"?>
; <p:FatturaElettronica versione="FPR12" xmlns:ds="http://www.w3.org/2000/09/xmldsig#"
; xmlns:p="http://ivaservizi.agenziaentrate.gov.it/docs/xsd/fatture/v1.2"
; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
; <FatturaElettronicaHeader>
; ...
; </FatturaElettronicaHeader>
; <FatturaElettronicaBody>
; ...
; </FatturaElettronicaBody>
; </p:FatturaElettronica>
; Use this online tool to generate parsing code from sample XML:
; Generate Parsing Code from XML
Debug "success."
CkImap::ckDispose(imap)
CkMessageSet::ckDispose(messageSet)
CkEmail::ckDispose(email)
CkEmail::ckDispose(attachedEmail)
CkStringBuilder::ckDispose(sbMime)
CkMime::ckDispose(mime)
CkBinData::ckDispose(bdP7m)
CkMime::ckDispose(mimeP7m)
CkCrypt2::ckDispose(crypt)
CkXml::ckDispose(xml)
ProcedureReturn
EndProcedure