About bash_syslog_histrory Function!

[address@hidden]

Hi:
       I found the orginal bash_syslog_history has three flaws:
     1、 Ingore the texts that length exceed SYSLOG_MAXLEN,however in our 
environment ,we have a lot of db2 command line which exceed SYSLOG_MAXLEN；
     2、only get PID and UID, lack some import information such as tty,orginal 
host ,user info ...
     3、only by compile with SYSLOG_HISTORY=1 ,which is not default. Is there 
any possible that by active it by default or where env parameter 
BASH_SYSLOG_HISTORY is set to on ?

     would you please consider improve about it ? 


the original:
#if defined (SYSLOG_HISTORY)
#define SYSLOG_MAXLEN 600

void
bash_syslog_history (line)
     const char *line;
{
  char trunc[SYSLOG_MAXLEN];

  if (strlen(line) < SYSLOG_MAXLEN)
    syslog (SYSLOG_FACILITY|SYSLOG_LEVEL, "HISTORY: PID=%d UID=%d %s", 
getpid(), current_user.uid, line);
  else
    {
      strncpy (trunc, line, SYSLOG_MAXLEN);
      trunc[SYSLOG_MAXLEN - 1] = '\0';
      syslog (SYSLOG_FACILITY|SYSLOG_LEVEL, "HISTORY (TRUNCATED): PID=%d UID=%d 
%s", getpid(), current_user.uid, trunc);
    }
}
#endif



#include <utmp.h>
static char TTY[64];
static char SRC[64];
static char ORGHOST[64];
static void getutmpinfo(char*,char*,char*);


void
bash_initialize_history ()
{
  history_quotes_inhibit_expansion = 1;
  history_search_delimiter_chars = ";&()|<>";
  history_inhibit_expansion_function = bash_history_inhibit_expansion;
  getutmpinfo(TTY,SRC,ORGHOST);
#if defined (BANG_HISTORY)
  sv_histchars ("histchars");
#endif
}



static void getutmpinfo(char* ptty ,char* puser,char* phost)
{
memset(ptty,0,sizeof(ptty));
memset(puser,0,sizeof(puser));
memset(phost,0,sizeof(phost));
struct utmp *p;
char pline[32];
strcpy( ptty ,(char*) ttyname(STDIN_FILENO) ) ;
while( p = getutent() ){
if( p->ut_type == 7){
memset(pline,0,32*sizeof(char));
strcpy(pline,(char*)"/dev/");
strcat(pline,p->ut_line);
if( strcmp(ptty,pline) == 0 ){
strcpy(puser,p->ut_user); 
strcpy(phost,p->ut_host);
break;
}
}
}
}

#if defined (SYSLOG_HISTORY)
#define SYSLOG_MAXLEN 1024
#define SYSLOG_HEADERLEN 512
void bash_syslog_history (line)
     const char *line;
{
  char trunc[SYSLOG_MAXLEN];
  char logheader[SYSLOG_HEADERLEN];

  snprintf(logheader,sizeof(logheader),"bash-history: 
PID=%d,PPID=%d,TTY=%s,ORG=%s,SRC=%s,USER=%s,DIR=%s",getpid(),getppid(),TTY,ORGHOST,SRC,current_user.user_name,get_current_dir_name());
  if ( strlen(line) < (SYSLOG_MAXLEN - strlen(logheader)) )
    syslog (SYSLOG_FACILITY|SYSLOG_LEVEL,"%s,CMD=%s",logheader , line);
  else
    {
      int seq = 0;
      int maxseq = strlen(line) /( SYSLOG_MAXLEN-strlen(logheader)) + 1;
      while ( seq++ < maxseq  ){
          strncpy (trunc, line, (SYSLOG_MAXLEN - strlen(logheader)) );
          trunc[SYSLOG_MAXLEN - 1] = '\0';
          syslog (SYSLOG_FACILITY|SYSLOG_LEVEL, "%s,seq=%d,CMD=%s", 
logheader,seq, trunc);
          line  = line + SYSLOG_MAXLEN - strlen(logheader);
      }
    }
}
#endif











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bashhist.c
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