XRootD
XrdAppsCconfig.cc
Go to the documentation of this file.
1 /******************************************************************************/
2 /* */
3 /* X r d A p p s C c o n f i g . c c */
4 /* */
5 /* (c) 2010 by the Board of Trustees of the Leland Stanford, Jr., University */
6 /* All Rights Reserved */
7 /* Produced by Andrew Hanushevsky for Stanford University under contract */
8 /* DE-AC02-76-SFO0515 with the Department of Energy */
9 /* */
10 /* This file is part of the XRootD software suite. */
11 /* */
12 /* XRootD is free software: you can redistribute it and/or modify it under */
13 /* the terms of the GNU Lesser General Public License as published by the */
14 /* Free Software Foundation, either version 3 of the License, or (at your */
15 /* option) any later version. */
16 /* */
17 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */
18 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
19 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
20 /* License for more details. */
21 /* */
22 /* You should have received a copy of the GNU Lesser General Public License */
23 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
24 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
25 /* */
26 /* The copyright holder's institutional names and contributor's names may not */
27 /* be used to endorse or promote products derived from this software without */
28 /* specific prior written permission of the institution or contributor. */
29 /******************************************************************************/
30 
31 #include <fcntl.h>
32 #include <cstdio>
33 #include <unistd.h>
34 #include <sys/types.h>
35 #include <sys/stat.h>
36 #include <sys/uio.h>
37 
38 #include "XrdNet/XrdNetAddr.hh"
39 #include "XrdOuc/XrdOucEnv.hh"
40 #include "XrdOuc/XrdOucNList.hh"
41 #include "XrdOuc/XrdOucStream.hh"
42 #include "XrdOuc/XrdOucUtils.hh"
43 #include "XrdSys/XrdSysE2T.hh"
44 #include "XrdSys/XrdSysError.hh"
45 #include "XrdSys/XrdSysLogger.hh"
46 #include "XrdSys/XrdSysHeaders.hh"
47 #include "XrdSys/XrdSysPthread.hh"
48 
49 /******************************************************************************/
50 /* i n L i s t */
51 /******************************************************************************/
52 
53 int inList(const char *var, const char **Vec)
54 {
55  int i = 0;
56  while(Vec[i] && strcmp(Vec[i],var)) i++;
57  return (Vec[i] != 0);
58 }
59 
60 /******************************************************************************/
61 /* U s a g e */
62 /******************************************************************************/
63 
64 void Usage(int rc)
65 {
66  std::cerr <<"\n Usage: cconfig -c <cfn> [-h <host>] [-n <name>] [-x <prog>] [<args>]"
67  "\n<args>: [[pfx]*]<directive> | <directive>[*[sfx]] [<args>]" <<std::endl;
68  exit(rc);
69 }
70 
71 /******************************************************************************/
72 /* m a i n */
73 /******************************************************************************/
74 
75 int main(int argc, char *argv[])
76 {
77  static const char *Pgm = "cconfig: ";
78  extern char *optarg;
79  extern int opterr, optind, optopt;
80 
82  XrdSysError Say(&Logger, "cconfig");
83  XrdOucNList_Anchor DirQ;
84  XrdOucEnv myEnv, *oldEnv = 0;
86  XrdNetAddr theAddr(0);
87 
88  const char *Cfn = 0, *Host = 0, *Name = 0, *Xeq = "xrootd";
89  const char *noSub[] = {"cms.prepmsg", "ofs.notifymsg", "oss.stagemsg",
90  "frm.xfr.copycmd", 0};
91  const char *ifChk[] = {"xrd.port", "all.role", "all.manager", 0};
92  const char *slChk[] = {"frm.xfr.copycmd", 0};
93 
94  char buff[4096], *var, c;
95  int i, retc = 0, cfgFD, chkQ = 0;
96 
97 // Process the options
98 //
99  opterr = 0;
100  if (argc > 1 && '-' == *argv[1])
101  while ((c = getopt(argc,argv,":c:h:n:x:")) && ((unsigned char)c != 0xff))
102  { switch(c)
103  {
104  case 'c': Cfn = optarg;
105  break;
106  case 'h': Host= optarg;
107  break;
108  case 'n': Name= optarg;
109  break;
110  case 'x': Xeq = optarg;
111  break;
112  default: sprintf(buff,"'%c'", optopt);
113  if (c == ':') Say.Say(Pgm, buff, " value not specified.");
114  else Say.Say(Pgm, buff, " option is invalid.");
115  Usage(1);
116  }
117  }
118 
119 // Make sure config file has been specified
120 //
121  if (!Cfn) {Say.Say(Pgm, "Config file not specified."); Usage(1);}
122 
123 // Get full host name
124 //
125  if (!Host) Host = theAddr.Name();
126  else if (!theAddr.Set(Host,0)) Host = theAddr.Name();
127  if (!Host) {Say.Say(Pgm, "Unable to determine host name."); exit(3);}
128 
129 // Prepare all selector arguments
130 //
131  for (i = optind; i < argc; i++) DirQ.Replace(argv[i],0);
132  chkQ = (DirQ.First() != 0);
133 
134 // Open the config file
135 //
136  if ( (cfgFD = open(Cfn, O_RDONLY, 0)) < 0)
137  {Say.Say(Pgm, XrdSysE2T(errno), " opening config file ", Cfn);
138  exit(4);
139  }
140 
141 // Construct instance name and stream
142 //
143  Name = XrdOucUtils::InstName(Name);
144  sprintf(buff,"%s %s@%s", Xeq, Name, Host);
145  Config = new XrdOucStream(&Say, strdup(buff), &myEnv, "");
146  Config->Attach(cfgFD);
147 
148 // Now start reading records until eof.
149 //
150  while((var = Config->GetMyFirstWord()))
151  {if (chkQ && !DirQ.Find(var)) {Config->noEcho(); continue;}
152  if (inList(var, noSub))
153  {if (inList(var, slChk))
154  while((var = Config->GetWord()) && *var != '/') {}
155  oldEnv = Config->SetEnv(0);
156  if (var) Config->GetRest(buff, sizeof(buff));
157  Config->SetEnv(oldEnv);
158  }
159  else if (inList(var, ifChk))
160  {while((var = Config->GetWord()) && strcmp(var, "if")) {}
161  if (var && !XrdOucUtils::doIf(&Say, *Config, "directive",
162  Host, Name, Xeq))
163  {Config->noEcho(); continue;}
164  }
165  else Config->GetRest(buff, sizeof(buff));
166  Config->Echo();
167  }
168 
169 // Now check if any errors occurred during file i/o
170 //
171  if ((retc = Config->LastError()))
172  {Say.Say(Pgm, XrdSysE2T(retc), " reading config file ", Cfn); retc = 8;}
173  Config->Close();
174 
175 // Should never get here
176 //
177  exit(retc);
178 }
int main(int argc, char *argv[])
int inList(const char *var, const char **Vec)
void Usage(int rc)
int optopt
int optind
int open(const char *path, int oflag,...)
const char * XrdSysE2T(int errcode)
Definition: XrdSysE2T.cc:99
const char * Name(const char *eName=0, const char **eText=0)
const char * Set(const char *hSpec, int pNum=PortInSpec)
Definition: XrdNetAddr.cc:208
XrdOucNList * First()
Definition: XrdOucNList.hh:100
XrdOucNList * Find(const char *name)
Definition: XrdOucNList.hh:89
void Replace(const char *name, int nval)
Definition: XrdOucNList.cc:110
static const char * InstName(int TranOpt=0)
Definition: XrdOucUtils.cc:729
static int doIf(XrdSysError *eDest, XrdOucStream &Config, const char *what, const char *hname, const char *nname, const char *pname)
Definition: XrdOucUtils.cc:228
void Say(const char *text1, const char *text2=0, const char *txt3=0, const char *text4=0, const char *text5=0, const char *txt6=0)
Definition: XrdSysError.cc:141
XrdSysError Say
XrdCmsConfig Config
XrdSysLogger Logger
Definition: XrdGlobals.cc:47