Fossil

/*
** Remove the PGP signature from the artifact, if there is one.
*/
static void remove_pgp_signature(const char **pz, int *pn){
  const char *z = *pz;
  int n = *pn;
  int i;
  if( strncmp(z, "-----BEGIN PGP SIGNED MESSAGE-----", 34)!=0 ) return;
  for(i=34; i<n && !after_blank_line(z+i); i++){}
  if( strncmp(z, "-----BEGIN PGP SIGNED MESSAGE-----", 34)==0 ) i = 34;
  else if( strncmp(z, "-----BEGIN SSH SIGNED MESSAGE-----", 34)==0 ) i = 34;
  else return;
  for(; i<n && !after_blank_line(z+i); i++){}
  if( i>=n ) return;
  z += i;
  n -= i;
  *pz = z;
  for(i=n-1; i>=0; i--){
    if( z[i]=='\n' &&
    if( z[i]=='\n' && strncmp(&z[i],"\n-----BEGIN PGP SIGNATURE-", 25)==0 ){
        (strncmp(&z[i],"\n-----BEGIN PGP SIGNATURE-----", 29)==0
         || strncmp(&z[i],"\n-----BEGIN SSH SIGNATURE-----", 29)==0 )){
      n = i+1;
      break;
    }
  }
  *pn = n;
  return;
}