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Overview
Comment:In althttpd, keep track of wall-clock time in milliseconds, not seconds. And for the user and system times, be sure to subtract out the user and system times for prior requests on the same connection.
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SHA1: 333c090d361f5baf31729d1ee3be671189fa1761
User & Date: drh 2013-12-16 21:30:52
Context
2013-12-16
21:42
When the request URI for static content contains extra path elements, report the error as 404 instead of 301. check-in: 155df5701c user: drh tags: trunk
21:30
In althttpd, keep track of wall-clock time in milliseconds, not seconds. And for the user and system times, be sure to subtract out the user and system times for prior requests on the same connection. check-in: 333c090d36 user: drh tags: trunk
20:13
Add an extra column to the logfile output from althttpd. The 16th column gives the number of characters in the request URI that contribute to the script name. This is useful with substr() in doing queries against specific CGI scripts. check-in: faec8e5df4 user: drh tags: trunk
Changes
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Changes to misc/althttpd.c. 

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static char *zRemoteUser = 0;    /* REMOTE_USER set by authorization module */
static int nIn = 0;              /* Number of bytes of input */
static int nOut = 0;             /* Number of bytes of output */
static char zReplyStatus[4];     /* Reply status code */
static int statusSent = 0;       /* True after status line is sent */
static char *zLogFile = 0;       /* Log to this file */
static int debugFlag = 0;        /* True if being debugged */
static time_t beginTime;         /* Time when this process starts */
static int closeConnection = 0;  /* True to send Connection: close in reply */
static int nRequest = 0;         /* Number of requests processed */
static int omitLog = 0;          /* Do not make logfile entries if true */
static int useHttps = 0;         /* True to use HTTPS: instead of HTTP: */
static char *zHttp = "http";     /* http or https */
static int useTimeout = 1;       /* True to use times */
static int standalone = 0;       /* Run as a standalone server (no inetd) */
static int ipv6Only = 0;         /* Use IPv6 only */
static int ipv4Only = 0;         /* Use IPv4 only */



/*
** Double any double-quote characters in a string.
*/
static char *Escape(char *z){
  int i, j;
  int n;
................................................................................
  for(i=j=0; (c=z[i])!=0; i++){
    zOut[j++] = c;
    if( c=='"' ) zOut[j++] = c;
  }
  zOut[j] = 0;
  return zOut;
}








/*
** Make an entry in the log file.  If the HTTP connection should be
** closed, then terminate this process.  Otherwise return.
*/
static void MakeLogEntry(int a){
  FILE *log;
  if( zTmpNam ){
    unlink(zTmpNam);
  }
  if( zLogFile && !omitLog ){
    time_t now;
    struct tm *pTm;
    struct rusage self, children;
    int waitStatus;
    char zDate[200];
    char *zRM = zRemoteUser ? zRemoteUser : "";

    if( zScript==0 ) zScript = "";
    if( zRealScript==0 ) zRealScript = "";
    if( zRemoteAddr==0 ) zRemoteAddr = "";
    if( zHttpHost==0 ) zHttpHost = "";
    if( zReferer==0 ) zReferer = "";
    if( zAgent==0 ) zAgent = "";
    time(&now);
    pTm = localtime(&now);
    strftime(zDate, sizeof(zDate), "%Y-%m-%d %H:%M:%S", pTm);
    waitpid(-1, &waitStatus, WNOHANG);
    getrusage(RUSAGE_SELF, &self);
    getrusage(RUSAGE_CHILDREN, &children);
    if( (log = fopen(zLogFile,"a"))!=0 ){
#ifdef COMBINED_LOG_FORMAT
      strftime(zDate, sizeof(zDate), "%d/%b/%Y:%H:%M:%S %z", pTm);
................................................................................
      ** (16) Bytes of URL that correspond to the SCRIPT_NAME
      */
      fprintf(log,
        "%s,%s,\"%s://%s%s\",\"%s\","
           "%s,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",\"%s\",%d\n",
        zDate, zRemoteAddr, zHttp, Escape(zHttpHost), Escape(zScript),
        Escape(zReferer), zReplyStatus, nIn, nOut,
        (int)(self.ru_utime.tv_sec*1000000 + self.ru_utime.tv_usec),
        (int)(self.ru_stime.tv_sec*1000000 + self.ru_stime.tv_usec),
        (int)(children.ru_utime.tv_sec*1000000 + children.ru_utime.tv_usec),
        (int)(children.ru_stime.tv_sec*1000000 + children.ru_stime.tv_usec),
        (int)(now - beginTime),
        nRequest, Escape(zAgent), Escape(zRM),
        strlen(zHttp)+strlen(zHttpHost)+strlen(zRealScript)+3
      );



#endif
      fclose(log);
      nIn = nOut = 0;
    }
  }
  if( closeConnection ){
    exit(a);
................................................................................
    while( (c = getc(in))!=EOF ){
      putc(c,stdout);
      nOut++;
    }
    fclose(in);
  }else if( countSlashes(zRealScript)!=countSlashes(zScript) ){
    /* The URI refers to a non-executable file so it is static content.  But
    /* there are extra terms in the URI past the end of the content.  We need
    ** to redirected to that relative URLs in the content will be right. */

    StartResponse("301 Moved Permanently");
    if( zServerPort==0 || zServerPort[0]==0 || strcmp(zServerPort,"80")==0 ){
      nOut += printf("Location: %s://%s%s\r\n",
                     zHttp, zServerName, zRealScript);
    }else{
      nOut += printf("Location: %s://%s:%s%s\r\n",
                     zHttp, zServerName, zServerPort, zRealScript);
................................................................................
  char *zPermUser = 0;      /* Run daemon with this user's permissions */
  const char *zPort = 0;    /* Implement an HTTP server process */
  int useChrootJail = 1;    /* True to use a change-root jail */
  struct passwd *pwd = 0;   /* Information about the user */

  /* Record the time when processing begins.
  */
  time(&beginTime);

  /* Parse command-line arguments
  */
  while( argc>1 && argv[1][0]=='-' ){
    char *z = argv[1];
    char *zArg = argc>=3 ? argv[2] : "0";
    if( z[0]=='-' && z[1]=='-' ) z++;








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static char *zRemoteUser = 0;    /* REMOTE_USER set by authorization module */
static int nIn = 0;              /* Number of bytes of input */
static int nOut = 0;             /* Number of bytes of output */
static char zReplyStatus[4];     /* Reply status code */
static int statusSent = 0;       /* True after status line is sent */
static char *zLogFile = 0;       /* Log to this file */
static int debugFlag = 0;        /* True if being debugged */
static struct timeval beginTime; /* Time when this process starts */
static int closeConnection = 0;  /* True to send Connection: close in reply */
static int nRequest = 0;         /* Number of requests processed */
static int omitLog = 0;          /* Do not make logfile entries if true */
static int useHttps = 0;         /* True to use HTTPS: instead of HTTP: */
static char *zHttp = "http";     /* http or https */
static int useTimeout = 1;       /* True to use times */
static int standalone = 0;       /* Run as a standalone server (no inetd) */
static int ipv6Only = 0;         /* Use IPv6 only */
static int ipv4Only = 0;         /* Use IPv4 only */
static struct rusage priorSelf;  /* Previously report SELF time */
static struct rusage priorChild; /* Previously report CHILD time */

/*
** Double any double-quote characters in a string.
*/
static char *Escape(char *z){
  int i, j;
  int n;
................................................................................
  for(i=j=0; (c=z[i])!=0; i++){
    zOut[j++] = c;
    if( c=='"' ) zOut[j++] = c;
  }
  zOut[j] = 0;
  return zOut;
}

/*
** Convert a struct timeval into an integer number of milliseconds
*/
static int tvms(struct timeval *p){
  return (int)(p->tv_sec*1000000 + p->tv_usec);
}

/*
** Make an entry in the log file.  If the HTTP connection should be
** closed, then terminate this process.  Otherwise return.
*/
static void MakeLogEntry(int a){
  FILE *log;
  if( zTmpNam ){
    unlink(zTmpNam);
  }
  if( zLogFile && !omitLog ){
    struct timeval now;
    struct tm *pTm;
    struct rusage self, children;
    int waitStatus;
    char zDate[200];
    char *zRM = zRemoteUser ? zRemoteUser : "";

    if( zScript==0 ) zScript = "";
    if( zRealScript==0 ) zRealScript = "";
    if( zRemoteAddr==0 ) zRemoteAddr = "";
    if( zHttpHost==0 ) zHttpHost = "";
    if( zReferer==0 ) zReferer = "";
    if( zAgent==0 ) zAgent = "";
    gettimeofday(&now, 0);
    pTm = localtime(&now.tv_sec);
    strftime(zDate, sizeof(zDate), "%Y-%m-%d %H:%M:%S", pTm);
    waitpid(-1, &waitStatus, WNOHANG);
    getrusage(RUSAGE_SELF, &self);
    getrusage(RUSAGE_CHILDREN, &children);
    if( (log = fopen(zLogFile,"a"))!=0 ){
#ifdef COMBINED_LOG_FORMAT
      strftime(zDate, sizeof(zDate), "%d/%b/%Y:%H:%M:%S %z", pTm);
................................................................................
      ** (16) Bytes of URL that correspond to the SCRIPT_NAME
      */
      fprintf(log,
        "%s,%s,\"%s://%s%s\",\"%s\","
           "%s,%d,%d,%d,%d,%d,%d,%d,%d,\"%s\",\"%s\",%d\n",
        zDate, zRemoteAddr, zHttp, Escape(zHttpHost), Escape(zScript),
        Escape(zReferer), zReplyStatus, nIn, nOut,
        tvms(&self.ru_utime) - tvms(&priorSelf.ru_utime),
        tvms(&self.ru_stime) - tvms(&priorSelf.ru_stime),
        tvms(&children.ru_utime) - tvms(&priorChild.ru_utime),
        tvms(&children.ru_stime) - tvms(&priorChild.ru_stime),
        tvms(&now) - tvms(&beginTime),
        nRequest, Escape(zAgent), Escape(zRM),
        (int)(strlen(zHttp)+strlen(zHttpHost)+strlen(zRealScript)+3)
      );
      priorSelf = self;
      priorChild = children;
      beginTime = now;
#endif
      fclose(log);
      nIn = nOut = 0;
    }
  }
  if( closeConnection ){
    exit(a);
................................................................................
    while( (c = getc(in))!=EOF ){
      putc(c,stdout);
      nOut++;
    }
    fclose(in);
  }else if( countSlashes(zRealScript)!=countSlashes(zScript) ){
    /* The URI refers to a non-executable file so it is static content.  But
    ** there are extra terms in the URI past the end of the content.  We need
    ** to redirected to that relative URLs in the content will be right.
    */
    StartResponse("301 Moved Permanently");
    if( zServerPort==0 || zServerPort[0]==0 || strcmp(zServerPort,"80")==0 ){
      nOut += printf("Location: %s://%s%s\r\n",
                     zHttp, zServerName, zRealScript);
    }else{
      nOut += printf("Location: %s://%s:%s%s\r\n",
                     zHttp, zServerName, zServerPort, zRealScript);
................................................................................
  char *zPermUser = 0;      /* Run daemon with this user's permissions */
  const char *zPort = 0;    /* Implement an HTTP server process */
  int useChrootJail = 1;    /* True to use a change-root jail */
  struct passwd *pwd = 0;   /* Information about the user */

  /* Record the time when processing begins.
  */
  gettimeofday(&beginTime, 0);

  /* Parse command-line arguments
  */
  while( argc>1 && argv[1][0]=='-' ){
    char *z = argv[1];
    char *zArg = argc>=3 ? argv[2] : "0";
    if( z[0]=='-' && z[1]=='-' ) z++;

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