| 1 | /* |
| 2 | Copyright (C) Andrew Tridgell 1998 |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU General Public License as published by |
| 6 | the Free Software Foundation; either version 2 of the License, or |
| 7 | (at your option) any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, write to the Free Software |
| 16 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 17 | */ |
| 18 | |
| 19 | /* |
| 20 | logging and utility functions |
| 21 | |
| 22 | tridge, May 1998 |
| 23 | */ |
| 24 | #include "rsync.h" |
| 25 | |
| 26 | |
| 27 | void log_open(void) |
| 28 | { |
| 29 | static int initialised; |
| 30 | int options = LOG_PID; |
| 31 | |
| 32 | if (initialised) return; |
| 33 | initialised = 1; |
| 34 | |
| 35 | #ifdef LOG_NDELAY |
| 36 | options |= LOG_NDELAY; |
| 37 | #endif |
| 38 | |
| 39 | #ifdef LOG_DAEMON |
| 40 | openlog("rsyncd", options, lp_syslog_facility()); |
| 41 | #else |
| 42 | openlog("rsyncd", options); |
| 43 | #endif |
| 44 | |
| 45 | #ifndef LOG_NDELAY |
| 46 | syslog(LOG_INFO,"rsyncd started\n"); |
| 47 | #endif |
| 48 | } |
| 49 | |
| 50 | |
| 51 | /* this is the rsync debugging function. Call it with FINFO or FERROR */ |
| 52 | void rprintf(int fd, const char *format, ...) |
| 53 | { |
| 54 | va_list ap; |
| 55 | char buf[1024]; |
| 56 | int len; |
| 57 | FILE *f=NULL; |
| 58 | extern int am_daemon; |
| 59 | /* recursion can happen with certain fatal conditions */ |
| 60 | static int depth; |
| 61 | |
| 62 | if (depth) return; |
| 63 | |
| 64 | depth++; |
| 65 | |
| 66 | va_start(ap, format); |
| 67 | len = vslprintf(buf, sizeof(buf)-1, format, ap); |
| 68 | va_end(ap); |
| 69 | |
| 70 | if (len < 0) exit_cleanup(1); |
| 71 | |
| 72 | if (len > sizeof(buf)-1) exit_cleanup(1); |
| 73 | |
| 74 | buf[len] = 0; |
| 75 | |
| 76 | if (am_daemon) { |
| 77 | int priority = LOG_INFO; |
| 78 | if (fd == FERROR) priority = LOG_WARNING; |
| 79 | |
| 80 | log_open(); |
| 81 | if (!io_multiplex_write(fd, buf, strlen(buf))) { |
| 82 | syslog(priority, "%s", buf); |
| 83 | } |
| 84 | |
| 85 | depth--; |
| 86 | return; |
| 87 | } |
| 88 | |
| 89 | if (fd == FERROR) { |
| 90 | f = stderr; |
| 91 | } |
| 92 | |
| 93 | if (fd == FINFO) { |
| 94 | extern int am_server; |
| 95 | if (am_server) |
| 96 | f = stderr; |
| 97 | else |
| 98 | f = stdout; |
| 99 | } |
| 100 | |
| 101 | if (!f) exit_cleanup(1); |
| 102 | |
| 103 | if (fwrite(buf, len, 1, f) != 1) exit_cleanup(1); |
| 104 | |
| 105 | depth--; |
| 106 | } |
| 107 | |
| 108 | void rflush(int fd) |
| 109 | { |
| 110 | FILE *f = NULL; |
| 111 | extern int am_daemon; |
| 112 | |
| 113 | if (am_daemon) { |
| 114 | return; |
| 115 | } |
| 116 | |
| 117 | if (fd == FERROR) { |
| 118 | f = stderr; |
| 119 | } |
| 120 | |
| 121 | if (fd == FINFO) { |
| 122 | extern int am_server; |
| 123 | if (am_server) |
| 124 | f = stderr; |
| 125 | else |
| 126 | f = stdout; |
| 127 | } |
| 128 | |
| 129 | if (!f) exit_cleanup(1); |
| 130 | fflush(f); |
| 131 | } |
| 132 | |