RE: [dspam-users] Example.c File

Hey, sorry for the email twice, but I was reading more carefully thru your
email and realised I didn't answer half the questions you were asking...

>>What platform are you using?
  OpenBSD 3.7

>>Can you post a stack trace of the crash, using gdb or similar?
  This is not possible as I have used the local_scan function in Exim and no
dumps or traces I seem to implement are telling me what I need [or if at
all]

>>What storage method are you using: Postgres, sqlite3, or other?
  Other, using MySQL 4.1

>>Also, can you put code in to check that the CTX signature is valid
>>(non-null, and meaningful)?
  Not sure how to do this...

>>May want to include a snippet of code if you are able.
  See below...

Regards and thanks in advance, kibble.

>From: ". kibble ." <jelly_bean_junky@hotmail.com>
>To: russfink@hotmail.com, dspam-users@lists.nuclearelephant.com
>Subject: RE: [dspam-users] Example.c File
>Date: Fri, 02 Sep 2005 14:16:02 +0100
>
>
>As requested a snippet of code:
>int report_spam(int spamflag) {
>
> int sflag = 0;
> char * message = malloc(1);
> DSPAM_CTX * CTX = NULL; /** DSPAM Context */
> struct _ds_spam_signature SIG; /** Example signature */
>
> message = read_emailmem(message);
>
> switch (spamflag) {
> case SPAMREPT: /** set up the context for error correction as
>spam */
> log_write(0, LOG_MAIN, "LOG: SPAMREPT function reached");
> CTX = dspam_create((char *)sender_address, NULL, NULL,
>DSM_PROCESS, DSF_CHAINED);
> CTX = attach_ctx_dbaccess(CTX);
> if (CTX == NULL) {
> log_write(0, LOG_MAIN, "ERROR: dspam_create failed!\n");
> sflag = 1;
> }
> CTX->classification = DSR_ISSPAM;
> CTX->source = DSS_ERROR;
> CTX->algorithms = DSA_GRAHAM | DSA_BURTON | DSP_GRAHAM;
> break;
> case FALSEPOS: /** set up the context for error correction as
>innocent */
> log_write(0, LOG_MAIN, "LOG: FALSEPOS function reached");
> CTX = dspam_create((char *)sender_address, NULL, NULL,
>DSM_PROCESS, DSF_CHAINED | DSF_SIGNATURE);
> CTX = attach_ctx_dbaccess(CTX);
> if (CTX == NULL) {
> log_write(0, LOG_MAIN, "ERROR: dspam_create failed!\n");
> sflag = 1;
> }
> CTX->classification = DSR_ISINNOCENT;
> CTX->source = DSS_ERROR;
> CTX->algorithms = DSA_GRAHAM | DSA_BURTON | DSP_GRAHAM;
> CTX->signature = &SIG; /** Attach the signature to the
>context */
> break;
> default: /** no reporting required, scan for spam perhaps ? */
> log_write(0, LOG_MAIN, "report_spam -> no reporting required");
> break;
> }
>
> log_write(0, LOG_MAIN, "LOG: Processing spam...");
> if (dspam_process(CTX, message) != 0) { /** Call DSPAM */
> log_write(0, LOG_MAIN, "ERROR: dspam_process failed!");
> sflag = 1;
> }
>
> log_write(0, LOG_MAIN, "ERROR: report_spam: dspam_destroy beginning");
> dspam_destroy(CTX); /** Destroy the context */
>
> memset(message, 0x0, sizeof(message));
> free(message);
> memset(&CTX, 0x0, sizeof(CTX));
> free(CTX);
>
> if (sflag == 0) {
> log_write(0, LOG_MAIN, "<= %s [%s] P=%s A=%s:%s",
> (char *)sender_address, (char *)sender_host_address, (char
>*)received_protocol,
> (char *)sender_host_authenticated, (char *)sender_address);
> log_write(0, LOG_MAIN, "=> (null) <%s> R=system_localuser
>T=local_delivery",
> (char *)recipients_list[0].address);
> }
>
> /** if we are reporting, which is pretty much so if you reach here, we
>blackhole the email */
> recipients_count = 0;
>
> return(sflag);
>} /** report_spam */
>
>
>>From: "Russ Fink" <russfink@hotmail.com>
>>To: jelly_bean_junky@hotmail.com, dspam-users@lists.nuclearelephant.com
>>Subject: RE: [dspam-users] Example.c File
>>Date: Mon, 29 Aug 2005 10:47:57 -0400
>>
>>The dspam_process is intentionally called with NULL, because a retrain
>>requires the CTX (context) to contain a valid message signature, not the
>>message itself. It is in this way that dspam_process finds the
>>appropriate tokens whose values need adjusting.
>>
>>If you want the list to help, we need more information. What platform are
>>you using? Can you post a stack trace of the crash, using gdb or similar?
>> What storage method are you using: Postgres, sqlite3, or other? Also,
>>can you put code in to check that the CTX signature is valid (non-null,
>>and meaningful)? May want to include a snippet of code if you are able.
>>
>>I have a hunch that there's a problem with the signature in your CTX.
>>
>>>From: ". kibble ." <jelly_bean_junky@hotmail.com>
>>>To: dspam-users@lists.nuclearelephant.com
>>>Subject: [dspam-users] Example.c File
>>>Date: Fri, 26 Aug 2005 14:47:11 +0100
>>>
>>>
>>>Hey there,
>>>
>>>I was reading thru the example.c file and I noticed in the 'False
>>>Positive' section the line 253 where dspam_process is called that there
>>>is a NULL value in the function call...
>>>
>>>Is this right, in my older code I'm using a pointer which contains the
>>>message which I'am reporting as a false positive. The only thing is, it
>>>crashes each time I do. Reporting, and general scanning works perfectly
>>>but reporting a false positive causes the system to crash.
>>>
>>>I have tried the stable, beta and CVS versions and they all produce the
>>>same results. Not sure what to do next? Any ideas...
>>>
>>>Regards, kibble.
>>>
>>
>>
>>
>
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Received on Fri Sep 2 09:26:29 2005