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1.1 root 1: /* semfile.c */
2:
3: /* $Id: semfile.c,v 1.2 2006/09/02 01:59:26 deuce Exp $ */
4:
5: /****************************************************************************
6: * @format.tab-size 4 (Plain Text/Source Code File Header) *
7: * @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) *
8: * *
9: * Copyright 2006 Rob Swindell - http://www.synchro.net/copyright.html *
10: * *
11: * This program is free software; you can redistribute it and/or *
12: * modify it under the terms of the GNU General Public License *
13: * as published by the Free Software Foundation; either version 2 *
14: * of the License, or (at your option) any later version. *
15: * See the GNU General Public License for more details: gpl.txt or *
16: * http://www.fsf.org/copyleft/gpl.html *
17: * *
18: * Anonymous FTP access to the most recent released source is available at *
19: * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net *
20: * *
21: * Anonymous CVS access to the development source and modification history *
22: * is available at cvs.synchro.net:/cvsroot/sbbs, example: *
23: * cvs -d :pserver:[email protected]:/cvsroot/sbbs login *
24: * (just hit return, no password is necessary) *
25: * cvs -d :pserver:[email protected]:/cvsroot/sbbs checkout src *
26: * *
27: * For Synchronet coding style and modification guidelines, see *
28: * http://www.synchro.net/source.html *
29: * *
30: * You are encouraged to submit any modifications (preferably in Unix diff *
31: * format) via e-mail to [email protected] *
32: * *
33: * Note: If this box doesn't appear square, then you need to fix your tabs. *
34: ****************************************************************************/
35:
36: #include <string.h>
37:
38: #include "semfile.h"
39: #include "filewrap.h"
40: #include "dirwrap.h"
41: #include "genwrap.h"
42:
43: #if !defined(NO_SOCKET_SUPPORT)
44: #include "sockwrap.h"
45: #endif
46:
47: /****************************************************************************/
48: /* This function compares a single semaphore file's */
49: /* date/time stamp (if the file exists) against the passed time stamp (t) */
50: /* updating the time stamp to the latest dated semaphore file and returning */
51: /* TRUE if any where newer than the initial value. */
52: /****************************************************************************/
53: BOOL DLLCALL semfile_check(time_t* t, const char* fname)
54: {
55: time_t ft;
56:
57: if(*t==0) /* uninitialized */
58: *t=time(NULL);
59:
60: if((ft=fdate(fname))==-1 || ft<=*t)
61: return(FALSE);
62:
63: *t=ft;
64: return(TRUE);
65: }
66:
67: /****************************************************************************/
68: /* This function goes through a list of semaphore files, comparing the file */
69: /* date/time stamp (if the file exists) against the passed time stamp (t) */
70: /* updating the time stamp to the latest dated semaphore file and returning */
71: /* a pointer to the filename if any where newer than the initial timestamp. */
72: /****************************************************************************/
73: char* DLLCALL semfile_list_check(time_t* t, str_list_t filelist)
74: {
75: char* signaled=NULL;
76: size_t i;
77:
78: for(i=0;filelist[i]!=NULL;i++)
79: if(semfile_check(t, filelist[i]))
80: signaled = filelist[i];
81:
82: return(signaled);
83: }
84:
85: str_list_t DLLCALL semfile_list_init(const char* parent,
86: const char* action, const char* service)
87: {
88: char path[MAX_PATH+1];
89: char hostname[128];
90: char* p;
91: str_list_t list;
92:
93: if((list=strListInit())==NULL)
94: return(NULL);
95: SAFEPRINTF2(path,"%s%s",parent,action);
96: strListPush(&list,path);
97: SAFEPRINTF3(path,"%s%s.%s",parent,action,service);
98: strListPush(&list,path);
99: if(gethostname(hostname,sizeof(hostname))==0) {
100: SAFEPRINTF3(path,"%s%s.%s",parent,action,hostname);
101: strListPush(&list,path);
102: SAFEPRINTF4(path,"%s%s.%s.%s",parent,action,hostname,service);
103: strListPush(&list,path);
104: if((p=strchr(hostname,'.'))!=NULL) {
105: *p=0;
106: SAFEPRINTF3(path,"%s%s.%s",parent,action,hostname);
107: strListPush(&list,path);
108: SAFEPRINTF4(path,"%s%s.%s.%s",parent,action,hostname,service);
109: strListPush(&list,path);
110: }
111: }
112:
113: return(list);
114: }
115:
116: void DLLCALL semfile_list_add(str_list_t* filelist, const char* path)
117: {
118: strListPush(filelist, path);
119: }
120:
121: void DLLCALL semfile_list_free(str_list_t* filelist)
122: {
123: strListFree(filelist);
124: }
125:
126: BOOL DLLCALL semfile_signal(const char* fname, const char* text)
127: {
128: int file;
129: #if !defined(NO_SOCKET_SUPPORT)
130: char hostname[128];
131:
132: if(text==NULL && gethostname(hostname,sizeof(hostname))==0)
133: text=hostname;
134: #endif
135: if((file=open(fname,O_CREAT|O_WRONLY))<0) /* use sopen instead? */
136: return(FALSE);
137: if(text!=NULL)
138: write(file,text,strlen(text));
139: /* use utime() for force the time-stamp to that of the local system? */
140: close(file);
141: return(TRUE);
142: }
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