src/log/File.cc

   1 /*
   2  * Copyright (C) 1996-2015 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* DEBUG: section 50    Log file handling */
  10
  11 #include "squid.h"
  12 #include "fatal.h"
  13 #include "fde.h"
  14 #include "log/File.h"
  15 #include "log/ModDaemon.h"
  16 #include "log/ModStdio.h"
  17 #include "log/ModSyslog.h"
  18 #include "log/ModUdp.h"
  19 #include "log/TcpLogger.h"
  20
  21 CBDATA_TYPE(Logfile);
  22
  23 Logfile *
  24 logfileOpen(const char *path, size_t bufsz, int fatal_flag)
  25 {
  26     int ret;
  27     const char *patharg;
  28
  29     debugs(50, DBG_IMPORTANT, "Logfile: opening log " << path);
  30     CBDATA_INIT_TYPE(Logfile);
  31
  32     Logfile *lf = cbdataAlloc(Logfile);
  33     xstrncpy(lf->path, path, MAXPATHLEN);
  34     patharg = path;
  35     /* need to call the per-logfile-type code */
  36     if (strncmp(path, "stdio:", 6) == 0) {
  37         patharg = path + 6;
  38         ret = logfile_mod_stdio_open(lf, patharg, bufsz, fatal_flag);
  39     } else if (strncmp(path, "daemon:", 7) == 0) {
  40         patharg = path + 7;
  41         ret = logfile_mod_daemon_open(lf, patharg, bufsz, fatal_flag);
  42     } else if (strncmp(path, "tcp:", 4) == 0) {
  43         patharg = path + 4;
  44         ret = Log::TcpLogger::Open(lf, patharg, bufsz, fatal_flag);
  45     } else if (strncmp(path, "udp:", 4) == 0) {
  46         patharg = path + 4;
  47         ret = logfile_mod_udp_open(lf, patharg, bufsz, fatal_flag);
  48 #if HAVE_SYSLOG
  49     } else if (strncmp(path, "syslog:", 7) == 0) {
  50         patharg = path + 7;
  51         ret = logfile_mod_syslog_open(lf, patharg, bufsz, fatal_flag);
  52 #endif
  53     } else {
  54         debugs(50, DBG_IMPORTANT, "WARNING: log name now starts with a module name. Use 'stdio:" << patharg << "'");
  55         snprintf(lf->path, MAXPATHLEN, "stdio:%s", patharg);
  56         ret = logfile_mod_stdio_open(lf, patharg, bufsz, fatal_flag);
  57     }
  58     if (!ret) {
  59         if (fatal_flag)
  60             fatalf("logfileOpen: %s: couldn't open!\n", path);
  61         else
  62             debugs(50, DBG_IMPORTANT, "logfileOpen: " << path << ": couldn't open!");
  63         lf->f_close(lf);
  64         cbdataFree(lf);
  65         return NULL;
  66     }
  67     assert(lf->data != NULL);
  68
  69     if (fatal_flag)
  70         lf->flags.fatal = 1;
  71
  72     lf->sequence_number = 0;
  73
  74     return lf;
  75 }
  76
  77 void
  78 logfileClose(Logfile * lf)
  79 {
  80     debugs(50, DBG_IMPORTANT, "Logfile: closing log " << lf->path);
  81     lf->f_flush(lf);
  82     lf->f_close(lf);
  83     cbdataFree(lf);
  84 }
  85
  86 void
  87 logfileRotate(Logfile * lf)
  88 {
  89     debugs(50, DBG_IMPORTANT, "logfileRotate: " << lf->path);
  90     lf->f_rotate(lf);
  91 }
  92
  93 void
  94 logfileWrite(Logfile * lf, char *buf, size_t len)
  95 {
  96     lf->f_linewrite(lf, buf, len);
  97 }
  98
  99 void
 100 logfilePrintf(Logfile * lf, const char *fmt,...)
 101 {
 102     va_list args;
 103     char buf[8192];
 104     int s;
 105
 106     va_start(args, fmt);
 107
 108     s = vsnprintf(buf, 8192, fmt, args);
 109
 110     if (s > 8192) {
 111         s = 8192;
 112
 113         if (fmt[strlen(fmt) - 1] == '\n')
 114             buf[8191] = '\n';
 115     }
 116
 117     logfileWrite(lf, buf, (size_t) s);
 118     va_end(args);
 119 }
 120
 121 void
 122 logfileLineStart(Logfile * lf)
 123 {
 124     lf->f_linestart(lf);
 125 }
 126
 127 void
 128 logfileLineEnd(Logfile * lf)
 129 {
 130     lf->f_lineend(lf);
 131     ++ lf->sequence_number;
 132 }
 133
 134 void
 135 logfileFlush(Logfile * lf)
 136 {
 137     lf->f_flush(lf);
 138 }
 139