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[email protected] Sat Feb 22 00:37:29 1997
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Date: Fri, 21 Feb 1997 19:00:05 -0500 (EST)
From: "Mark M." <
[email protected]>
To:
[email protected], Jeff Burchell <
[email protected]>
Subject: Re: Blocking From: headers.
In-Reply-To: <
[email protected]>
Message-ID: <
[email protected]>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Status: OR
On Thu, 20 Feb 1997, Jeff Burchell wrote:
> I'd like to tell huge.cajones not to allow the pasting of From: headers (or
> possibly convert them to X-Might-Be-From:). Unfortunately, I'm not a C
> coder. So, if there's someone out there who is, can you tell me what I
> need to put in the following chunk of code to do this?
The following will completely prevent the pasting of "From:" lines:
/* Paste in ## headers if present */
if(input[0]=='#'&&input[1]=='#') {
/* Kill Reply-To lines with blocked addresses to prevent
mailbombs via alt.test */
while(fgets(input,255,infile)>0&&input[0]>31) {
if ((input[0]=='R'||input[0]=='r')&&input[1]=='e'&&input[2]=='p') {
block_addr(input,BLOCKTO);if (input[0]!=0)
fprintf(outfile,"%s",input);
/* Block ## pasted Newsgroups: */
}else
if((input[0]|32=='n')&&input[1]=='e'&&input[2]=='w'&&input[3]=='s')
{
block_addr(input,BLOCKTO);if (input[0]!=0)
fprintf(outfile,"%s",input);
}else
if(input[0]=='F'&&input[1]=='r'&&input[2]=='o'&&input[3]=='m') {
/* nothing */
}else fprintf(outfile,"%s",input);
}
fprintf(outfile,"\n");
}else{
fprintf(outfile,"\n%s",input);
if(replykey[0]>0&&input[0]=='*'&&input[1]=='*') {
reencrypt();
}
}
Here's the cooresponding patch:
*** remailer.c.orig Fri Feb 21 18:52:19 1997
--- remailer.c Fri Feb 21 18:54:55 1997
***************
*** 802,812 ****
mailbombs via alt.test */
while(fgets(input,255,infile)>0&&input[0]>31) {
if ((input[0]=='R'||input[0]=='r')&&input[1]=='e'&&input[2]=='p') {
! block_addr(input,BLOCKTO);if (input[0]!=0) fprintf(outfile,"%s",input);
/* Block ## pasted Newsgroups: */
! }else if((input[0]|32=='n')&&input[1]=='e'&&input[2]=='w'&&input[3]=='s')
{
! block_addr(input,BLOCKTO);if (input[0]!=0) fprintf(outfile,"%s",input);
}else fprintf(outfile,"%s",input);
}
fprintf(outfile,"\n");
--- 802,818 ----
mailbombs via alt.test */
while(fgets(input,255,infile)>0&&input[0]>31) {
if ((input[0]=='R'||input[0]=='r')&&input[1]=='e'&&input[2]=='p') {
! block_addr(input,BLOCKTO);if (input[0]!=0)
! fprintf(outfile,"%s",input);
/* Block ## pasted Newsgroups: */
! }else
! if((input[0]|32=='n')&&input[1]=='e'&&input[2]=='w'&&input[3]=='s')
{
! block_addr(input,BLOCKTO);if (input[0]!=0)
! fprintf(outfile,"%s",input);
! }else
! if(input[0]=='F'&&input[1]=='r'&&input[2]=='o'&&input[3]=='m') {
! /* nothing */
}else fprintf(outfile,"%s",input);
}
fprintf(outfile,"\n");
Mark
