[Dovecot] antispam plugin claims "antispam signature not found"

[Guillaume HILT]

Ok, i updated the files by hand, and it's working like a charm :)
Thanks for the patch Johannes.

Guillaume HILT a écrit :
> I have the same problem and i'm wondering how should i use this patch ?
> I'm not familiar with the patch command.
>
> Thanks.
>
> PS: Sorry for the empty mail
>
> Johannes Berg a écrit
>> On Tue, 2008-11-11 at 11:42 +0100, Johannes Berg wrote:
>>
>>  
>>> Not sure, I personally think that moving them silently makes errors
>>> harder to diagnose. I'll add an option since then you can set this
>>> option (antispam_missing_signature = [error|move]) to move after you've
>>> tested and verified that it works just fine.
>>>     
>>
>> Try this patch please, I have only compiled it so far. (there might be
>> rejects in the signature-log.c file unless you update to the current git
>> tree but you don't care about that)
>>
>> diff --git a/antispam.7 b/antispam.7
>> index d07c1d0..e26db69 100644
>> --- a/antispam.7
>> +++ b/antispam.7
>> @@ -108,6 +108,13 @@ plugin {
>>      # mail signature (used with any backend requiring a signature)
>>      antispam_signature = X-DSPAM-Signature
>>  
>> +    # action to take on mails without signature
>> +    # (used with any backend requiring a signature)
>> +    # (we recommend only setting this to 'move' after verifying that 
>> the
>> +    # whole setup is working)
>> +    # antispam_signature_missing = move # move silently without 
>> training
>> +    antispam_signature_missing = error
>> +
>>      # semicolon-separated list of Trash folders (default unset i.e. 
>> none)
>>      # antispam_trash =
>>      # antispam_trash = trash;Trash;Deleted Items
>> diff --git a/signature-log.c b/signature-log.c
>> index ab8cd6d..5b7b306 100644
>> --- a/signature-log.c
>> +++ b/signature-log.c
>> @@ -99,7 +99,12 @@ int backend_handle_mail(struct 
>> mailbox_transaction_context *t,
>>          return -1;
>>      }
>>  
>> -    signature = signature_extract(t, mail);
>> +    ret = signature_extract(t, mail, &signature);
>> +    if (ret)
>> +        return ret;
>> +
>> +    if (!signature)
>> +        return 0;
>>  
>>      switch (wanted) {
>>      case CLASS_SPAM:
>> diff --git a/signature.c b/signature.c
>> index 7f9d83b..7ad29d6 100644
>> --- a/signature.c
>> +++ b/signature.c
>> @@ -5,6 +5,7 @@
>>  #include "mail-storage-private.h"
>>  
>>  const char *signature_hdr = "X-DSPAM-Signature";
>> +static int signature_nosig_ignore = 0;
>>  
>>  void signature_init(void)
>>  {
>> @@ -12,6 +13,16 @@ void signature_init(void)
>>      if (tmp)
>>          signature_hdr = tmp;
>>      debug("signature header line is \"%s\"\n", signature_hdr);
>> +
>> +    tmp = get_setting("SIGNATURE_MISSING");
>> +    if (!tmp)
>> +        tmp = "error";
>> +    if (strcmp(tmp, "move") == 0) {
>> +        signature_nosig_ignore = 1;
>> +        debug("will silently move mails with missing signature\n");
>> +    } else if (strcmp(tmp, "error") != 0) {
>> +        debug("invalid signature_missing setting '%s', ignoring\n", 
>> tmp);
>> +    }
>>  }
>>  
>>  int signature_extract_to_list(struct mailbox_transaction_context *t,
>> @@ -23,10 +34,14 @@ int signature_extract_to_list(struct 
>> mailbox_transaction_context *t,
>>  
>>      signatures = get_mail_headers(mail, signature_hdr);
>>      if (!signatures || !signatures[0]) {
>> -        mail_storage_set_error(t->box->storage,
>> -                       ME(NOTPOSSIBLE)
>> -                       "antispam signature not found");
>> -        return -1;
>> +        if (!signature_nosig_ignore) {
>> +            mail_storage_set_error(t->box->storage,
>> +                           ME(NOTPOSSIBLE)
>> +                           "antispam signature not found");
>> +            return -1;
>> +        } else {
>> +            return 0;
>> +        }
>>      }
>>  
>>      while (signatures[1])
>> @@ -42,23 +57,30 @@ int signature_extract_to_list(struct 
>> mailbox_transaction_context *t,
>>      return 0;
>>  }
>>  
>> -const char *signature_extract(struct mailbox_transaction_context *t,
>> -                  struct mail *mail)
>> +int signature_extract(struct mailbox_transaction_context *t,
>> +              struct mail *mail, const char **signature)
>>  {
>>      const char *const *signatures;
>>  
>>      signatures = get_mail_headers(mail, signature_hdr);
>>      if (!signatures || !signatures[0]) {
>> -        mail_storage_set_error(t->box->storage,
>> -                       ME(NOTPOSSIBLE)
>> -                       "antispam signature not found");
>> -        return NULL;
>> +        if (!signature_nosig_ignore) {
>> +            mail_storage_set_error(t->box->storage,
>> +                           ME(NOTPOSSIBLE)
>> +                           "antispam signature not found");
>> +            return -1;
>> +        } else {
>> +            *signature = NULL;
>> +            return 0;
>> +        }
>>      }
>>  
>>      while (signatures[1])
>>          signatures++;
>>  
>> -    return signatures[0];
>> +    *signature = signatures[0];
>> +
>> +    return 0;
>>  }
>>  
>>  void signature_list_free(struct siglist **list)
>> diff --git a/signature.h b/signature.h
>> index e25d1b5..1384924 100644
>> --- a/signature.h
>> +++ b/signature.h
>> @@ -16,8 +16,8 @@ void signature_init(void);
>>  int signature_extract_to_list(struct mailbox_transaction_context *t,
>>                    struct mail *mail, struct siglist **list,
>>                    enum classification wanted);
>> -const char *signature_extract(struct mailbox_transaction_context *t,
>> -                  struct mail *mail);
>> +int signature_extract(struct mailbox_transaction_context *t,
>> +              struct mail *mail, const char **signature);
>>  void signature_list_free(struct siglist **list);
>>  
>>  extern const char *signature_hdr;
>>
>>   
>
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