annotate toys/pending/syslogd.c @ 1028:58bfd974216d draft

syslogd: cleanup - fix bugs introduced in the cleanups - inline addrfds() and open_unix_socks() and simplify them - use xpidfile() - remove isNetwork from struct logfile - invert the meaning of facility and level in struct logfile so that they are automatically correctly initialized - fix memory leak regarding the filenames of logfiles - TT.sd was unused
author Felix Janda <felix.janda at posteo.de>
date Mon, 26 Aug 2013 21:55:33 +0200
parents 4b0ad1c7af42
children cbc467592b2e
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1 /* syslogd.c - a system logging utility.
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2 *
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3 * Copyright 2013 Madhur Verma <mad.flexi@gmail.com>
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4 * Copyright 2013 Kyungwan Han <asura321@gmail.com>
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5 *
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6 * No Standard
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7
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8 USE_SYSLOGD(NEWTOY(syslogd,">0l#<1>8=8R:b#<0>99=1s#<0=200m#<0>71582787=20O:p:f:a:nSKLD", TOYFLAG_SBIN|TOYFLAG_STAYROOT))
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9
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10 config SYSLOGD
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11 bool "syslogd"
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12 default n
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13 help
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14 Usage: syslogd [-a socket] [-O logfile] [-f config file] [-m interval]
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15 [-p socket] [-s SIZE] [-b N] [-R HOST] [-l N] [-nSLKD]
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16
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17 System logging utility
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18
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19 -a Extra unix socket for listen
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20 -O FILE Default log file <DEFAULT: /var/log/messages>
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21 -f FILE Config file <DEFAULT: /etc/syslog.conf>
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22 -p Alternative unix domain socket <DEFAULT : /dev/log>
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23 -n Avoid auto-backgrounding.
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24 -S Smaller output
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25 -m MARK interval <DEFAULT: 20 minutes> (RANGE: 0 to 71582787)
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26 -R HOST Log to IP or hostname on PORT (default PORT=514/UDP)"
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27 -L Log locally and via network (default is network only if -R)"
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28 -s SIZE Max size (KB) before rotation (default:200KB, 0=off)
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29 -b N rotated logs to keep (default:1, max=99, 0=purge)
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30 -K Log to kernel printk buffer (use dmesg to read it)
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31 -l N Log only messages more urgent than prio(default:8 max:8 min:1)
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32 -D Drop duplicates
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33 */
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34
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35 #define FOR_syslogd
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36 #define SYSLOG_NAMES
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37 #include "toys.h"
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38 #include "toynet.h"
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39
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40 // UNIX Sockets for listening
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41 struct unsocks {
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42 struct unsocks *next;
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43 char *path;
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44 struct sockaddr_un sdu;
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45 int sd;
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46 };
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47
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48 // Log file entry to log into.
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49 struct logfile {
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50 struct logfile *next;
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51 char *filename;
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52 uint32_t facility[8];
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53 uint8_t level[LOG_NFACILITIES];
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54 int logfd;
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55 struct sockaddr_in saddr;
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56 };
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57
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58 GLOBALS(
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59 char *socket;
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60 char *config_file;
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61 char *unix_socket;
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62 char *logfile;
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63 long interval;
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64 long rot_size;
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65 long rot_count;
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66 char *remote_log;
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67 long log_prio;
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68
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69 struct unsocks *lsocks; // list of listen sockets
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70 struct logfile *lfiles; // list of write logfiles
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71 int sigfd[2];
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72 )
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73
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74 // Lookup numerical code from name
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75 // Also used in logger
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76 int logger_lookup(int where, char *key)
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77 {
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78 CODE *w = ((CODE *[]){facilitynames, prioritynames})[where];
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79
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80 for (; w->c_name; w++)
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81 if (!strcasecmp(key, w->c_name)) return w->c_val;
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82
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83 return -1;
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84 }
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85
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86 //search the given name and return its value
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87 static char *dec(int val, CODE *clist)
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88 {
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89 for (; clist->c_name; clist++)
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90 if (val == clist->c_val) return clist->c_name;
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91 return itoa(val);
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92 }
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93
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94 /*
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95 * recurses the logfile list and resolves config
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96 * for evry file and updates facilty and log level bits.
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97 */
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98 static int resolve_config(struct logfile *file, char *config)
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99 {
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100 char *tk;
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101
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102 for (tk = strtok(config, "; \0"); tk; tk = strtok(NULL, "; \0")) {
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103 char *fac = tk, *lvl;
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104 int i = 0;
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105 unsigned facval = 0;
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106 uint8_t set, levval, bits = 0;
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107
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108 tk = strchr(fac, '.');
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109 if (!tk) return -1;
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110 *tk = '\0';
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111 lvl = tk + 1;
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112
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113 for (;;) {
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114 char *nfac = strchr(fac, ',');
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115
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116 if (nfac) *nfac = '\0';
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117 if (*fac == '*') {
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118 facval = 0xFFFFFFFF;
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119 if (fac[1]) return -1;
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120 } else {
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121 if ((i = logger_lookup(0, fac)) == -1) return -1;
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122 facval |= (1 << LOG_FAC(i));
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123 }
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124 if (nfac) fac = nfac + 1;
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125 else break;
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126 }
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127
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128 levval = 0;
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129 for (tk = "!=*"; *tk; tk++, bits <<= 1) {
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130 if (*lvl == *tk) {
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131 bits++;
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132 lvl++;
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133 }
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134 }
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135 if (bits & 2) levval = 0xff;
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136 if (*lvl) {
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137 if ((i = logger_lookup(1, lvl)) == -1) return -1;
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138 levval |= (bits & 4) ? LOG_MASK(i) : LOG_UPTO(i);
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139 if (bits & 8) levval = ~levval;
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140 }
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141
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142 for (i = 0, set = levval; set; set >>= 1, i++)
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143 if (set & 0x1) file->facility[i] |= ~facval;
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144 for (i = 0; i < LOG_NFACILITIES; facval >>= 1, i++)
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145 if (facval & 0x1) file->level[i] |= ~levval;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
146 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
147
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
148 return 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
149 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
150
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
151 // Parse config file and update the log file list.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
152 static int parse_config_file(void)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
153 {
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
154 struct logfile *file;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
155 FILE *fp;
1027
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
156 char *confline, *tk[2];
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
157 int len, lineno = 0;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
158 size_t linelen;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
159 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
160 * if -K then open only /dev/kmsg
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
161 * all other log files are neglected
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
162 * thus no need to open config either.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
163 */
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
164 if (toys.optflags & FLAG_K) {
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
165 file = xzalloc(sizeof(struct logfile));
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
166 file->filename = xstrdup("/dev/kmsg");
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
167 TT.lfiles = file;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
168 return 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
169 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
170 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
171 * if -R then add remote host to log list
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
172 * if -L is not provided all other log
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
173 * files are neglected thus no need to
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
174 * open config either so just return.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
175 */
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
176 if (toys.optflags & FLAG_R) {
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
177 file = xzalloc(sizeof(struct logfile));
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
178 file->filename = xmsprintf("@%s",TT.remote_log);
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
179 TT.lfiles = file;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
180 if (!(toys.optflags & FLAG_L)) return 0;
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
181 }
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
182 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
183 * Read config file and add logfiles to the list
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
184 * with their configuration.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
185 */
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
186 if (!(fp = fopen(TT.config_file, "r")) && (toys.optflags & FLAG_f))
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
187 perror_exit("can't open '%s'", TT.config_file);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
188
1027
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
189 for (linelen = 0; fp;) {
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
190 confline = NULL;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
191 len = getline(&confline, &linelen, fp);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
192 if (len <= 0) break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
193 lineno++;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
194 for (; *confline == ' '; confline++, len--) ;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
195 if ((confline[0] == '#') || (confline[0] == '\n')) continue;
1027
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
196 tk[0] = confline;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
197 for (; len && !(*tk[0]==' ' || *tk[0]=='\t'); tk[0]++, len--);
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
198 for (tk[1] = tk[0]; len && (*tk[1]==' ' || *tk[1]=='\t'); tk[1]++, len--);
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
199 if (!len || (len == 1 && *tk[1] == '\n')) {
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
200 error_msg("error in '%s' at line %d", TT.config_file, lineno);
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
201 return -1;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
202 }
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
203 else if (*(tk[1] + len - 1) == '\n') *(tk[1] + len - 1) = '\0';
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
204 *tk[0] = '\0';
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
205 if (*tk[1] != '*') {
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
206 file = TT.lfiles;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
207 while (file && strcmp(file->filename, tk[1])) file = file->next;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
208 if (!file) {
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
209 file = xzalloc(sizeof(struct logfile));
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
210 file->filename = xstrdup(tk[1]);
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
211 file->next = TT.lfiles;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
212 TT.lfiles = file;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
213 }
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
214 if (resolve_config(file, confline) == -1) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
215 error_msg("error in '%s' at line %d", TT.config_file, lineno);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
216 return -1;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
217 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
218 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
219 free(confline);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
220 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
221 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
222 * Can't open config file or support is not enabled
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
223 * adding default logfile to the head of list.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
224 */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
225 if (!fp){
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
226 file = xzalloc(sizeof(struct logfile));
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
227 file->filename = xstrdup((toys.optflags & FLAG_O) ?
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
228 TT.logfile : "/var/log/messages"); //DEFLOGFILE
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
229 file->next = TT.lfiles;
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
230 TT.lfiles = file;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
231 } else fclose(fp);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
232 return 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
233 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
234
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
235 // open every log file in list.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
236 static void open_logfiles(void)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
237 {
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
238 struct logfile *tfd;
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
239
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
240 for (tfd = TT.lfiles; tfd; tfd = tfd->next) {
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
241 char *p, *tmpfile;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
242 long port = 514;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
243
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
244 if (*tfd->filename == '@') { // network
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
245 struct addrinfo *info, rp;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
246
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
247 tmpfile = xstrdup(tfd->filename + 1);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
248 if ((p = strchr(tmpfile, ':'))) {
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
249 char *endptr;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
250
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
251 *p = '\0';
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
252 port = strtol(++p, &endptr, 10);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
253 if (*endptr || endptr == p || port < 0 || port > 65535)
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
254 error_exit("bad port in %s", tfd->filename);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
255 }
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
256 memset(&rp, 0, sizeof(rp));
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
257 rp.ai_family = AF_INET;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
258 rp.ai_socktype = SOCK_DGRAM;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
259 rp.ai_protocol = IPPROTO_UDP;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
260
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
261 if (getaddrinfo(tmpfile, NULL, &rp, &info) || !info)
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
262 perror_exit("BAD ADDRESS: can't find : %s ", tmpfile);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
263 ((struct sockaddr_in*)info->ai_addr)->sin_port = htons(port);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
264 memcpy(&tfd->saddr, info->ai_addr, info->ai_addrlen);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
265 freeaddrinfo(info);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
266
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
267 tfd->logfd = xsocket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
268 free(tmpfile);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
269 } else tfd->logfd = open(tfd->filename, O_CREAT | O_WRONLY | O_APPEND, 0666);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
270 if (tfd->logfd < 0) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
271 tfd->filename = "/dev/console";
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
272 tfd->logfd = open(tfd->filename, O_APPEND);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
273 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
274 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
275 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
276
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
277 //write to file with rotation
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
278 static int write_rotate(struct logfile *tf, int len)
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
279 {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
280 int size, isreg;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
281 struct stat statf;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
282 isreg = (!fstat(tf->logfd, &statf) && S_ISREG(statf.st_mode));
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
283 size = statf.st_size;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
284
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
285 if ((toys.optflags & FLAG_s) || (toys.optflags & FLAG_b)) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
286 if (TT.rot_size && isreg && (size + len) > (TT.rot_size*1024)) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
287 if (TT.rot_count) { /* always 0..99 */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
288 int i = strlen(tf->filename) + 3 + 1;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
289 char old_file[i];
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
290 char new_file[i];
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
291 i = TT.rot_count - 1;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
292 while (1) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
293 sprintf(new_file, "%s.%d", tf->filename, i);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
294 if (!i) break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
295 sprintf(old_file, "%s.%d", tf->filename, --i);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
296 rename(old_file, new_file);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
297 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
298 rename(tf->filename, new_file);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
299 unlink(tf->filename);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
300 close(tf->logfd);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
301 tf->logfd = open(tf->filename, O_CREAT | O_WRONLY | O_APPEND, 0666);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
302 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
303 ftruncate(tf->logfd, 0);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
304 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
305 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
306 return write(tf->logfd, toybuf, len);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
307 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
308
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
309 //Parse messege and write to file.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
310 static void logmsg(char *msg, int len)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
311 {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
312 time_t now;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
313 char *p, *ts, *lvlstr, *facstr;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
314 struct utsname uts;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
315 int pri = 0;
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
316 struct logfile *tf = TT.lfiles;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
317
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
318 char *omsg = msg;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
319 int olen = len, fac, lvl;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
320
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
321 if (*msg == '<') { // Extract the priority no.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
322 pri = (int) strtoul(msg + 1, &p, 10);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
323 if (*p == '>') msg = p + 1;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
324 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
325 /* Jan 18 00:11:22 msg...
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
326 * 01234567890123456
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
327 */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
328 if (len < 16 || msg[3] != ' ' || msg[6] != ' ' || msg[9] != ':'
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
329 || msg[12] != ':' || msg[15] != ' ') {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
330 time(&now);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
331 ts = ctime(&now) + 4; /* skip day of week */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
332 } else {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
333 now = 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
334 ts = msg;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
335 msg += 16;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
336 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
337 ts[15] = '\0';
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
338 fac = LOG_FAC(pri);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
339 lvl = LOG_PRI(pri);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
340
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
341 if (toys.optflags & FLAG_K) len = sprintf(toybuf, "<%d> %s\n", pri, msg);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
342 else {
1027
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
343 facstr = dec(pri & LOG_FACMASK, facilitynames);
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
344 lvlstr = dec(LOG_PRI(pri), prioritynames);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
345
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
346 p = "local";
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
347 if (!uname(&uts)) p = uts.nodename;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
348 if (toys.optflags & FLAG_S) len = sprintf(toybuf, "%s %s\n", ts, msg);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
349 else len = sprintf(toybuf, "%s %s %s.%s %s\n", ts, p, facstr, lvlstr, msg);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
350 }
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
351 if (lvl >= TT.log_prio) return;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
352
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
353 for (; tf; tf = tf->next) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
354 if (tf->logfd > 0) {
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
355 if (!((tf->facility[lvl] & (1 << fac)) || (tf->level[fac] & (1<<lvl)))) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
356 int wlen, isNetwork = *tf->filename == '@';
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
357 if (isNetwork)
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
358 wlen = sendto(tf->logfd, omsg, olen, 0, (struct sockaddr*)&tf->saddr, sizeof(tf->saddr));
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
359 else wlen = write_rotate(tf, len);
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
360 if (wlen < 0) perror_msg("write failed file : %s ", tf->filename + isNetwork);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
361 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
362 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
363 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
364 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
365
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
366 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
367 * closes all read and write fds
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
368 * and frees all nodes and lists
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
369 */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
370 static void cleanup(void)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
371 {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
372 while (TT.lsocks) {
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
373 struct unsocks *fnode = TT.lsocks;
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
374
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
375 if (fnode->sd >= 0) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
376 close(fnode->sd);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
377 unlink(fnode->path);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
378 }
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
379 TT.lsocks = fnode->next;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
380 free(fnode);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
381 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
382
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
383 while (TT.lfiles) {
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
384 struct logfile *fnode = TT.lfiles;
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
385
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
386 free(fnode->filename);
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
387 if (fnode->logfd >= 0) close(fnode->logfd);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
388 TT.lfiles = fnode->next;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
389 free(fnode);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
390 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
391 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
392
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
393 static void signal_handler(int sig)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
394 {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
395 unsigned char ch = sig;
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
396 if (write(TT.sigfd[1], &ch, 1) != 1) error_msg("can't send signal");
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
397 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
398
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
399 void syslogd_main(void)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
400 {
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
401 struct unsocks *tsd;
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
402 int nfds, retval, last_len=0;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
403 struct timeval tv;
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
404 fd_set rfds; // fds for reading
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
405 char *temp, *buffer = (toybuf +2048), *last_buf = (toybuf + 3072); //these two buffs are of 1K each
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
406
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
407 if ((toys.optflags & FLAG_p) && (strlen(TT.unix_socket) > 108))
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
408 error_exit("Socket path should not be more than 108");
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
409
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
410 TT.config_file = (toys.optflags & FLAG_f) ?
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
411 TT.config_file : "/etc/syslog.conf"; //DEFCONFFILE
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
412 init_jumpin:
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
413 tsd = xzalloc(sizeof(struct unsocks));
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
414
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
415 tsd->path = (toys.optflags & FLAG_p) ? TT.unix_socket : "/dev/log"; // DEFLOGSOCK
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
416 TT.lsocks = tsd;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
417
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
418 if (toys.optflags & FLAG_a) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
419 for (temp = strtok(TT.socket, ":"); temp; temp = strtok(NULL, ":")) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
420 if (strlen(temp) > 107) temp[108] = '\0';
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
421 tsd = xzalloc(sizeof(struct unsocks));
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
422 tsd->path = temp;
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
423 tsd->next = TT.lsocks;
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
424 TT.lsocks = tsd;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
425 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
426 }
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
427 /*
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
428 * initializes unsock_t structure
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
429 * and opens socket for reading
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
430 * and adds to global lsock list.
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
431 */
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
432 nfds = 0;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
433 for (tsd = TT.lsocks; tsd; tsd = tsd->next) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
434 tsd->sdu.sun_family = AF_UNIX;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
435 strcpy(tsd->sdu.sun_path, tsd->path);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
436 tsd->sd = socket(AF_UNIX, SOCK_DGRAM, 0);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
437 if (tsd->sd < 0) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
438 perror_msg("OPEN SOCKS : failed");
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
439 continue;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
440 }
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
441 unlink(tsd->sdu.sun_path);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
442 if (bind(tsd->sd, (struct sockaddr *) &tsd->sdu, sizeof(tsd->sdu))) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
443 perror_msg("BIND SOCKS : failed sock : %s", tsd->sdu.sun_path);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
444 close(tsd->sd);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
445 continue;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
446 }
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
447 chmod(tsd->path, 0777);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
448 nfds++;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
449 }
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
450 if (!nfds) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
451 error_msg("Can't open single socket for listenning.");
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
452 goto clean_and_exit;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
453 }
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
454
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
455 // Setup signals
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
456 if (pipe(TT.sigfd) < 0) error_exit("pipe failed\n");
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
457
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
458 fcntl(TT.sigfd[1] , F_SETFD, FD_CLOEXEC);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
459 fcntl(TT.sigfd[0] , F_SETFD, FD_CLOEXEC);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
460 int flags = fcntl(TT.sigfd[1], F_GETFL);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
461 fcntl(TT.sigfd[1], F_SETFL, flags | O_NONBLOCK);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
462 signal(SIGHUP, signal_handler);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
463 signal(SIGTERM, signal_handler);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
464 signal(SIGINT, signal_handler);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
465 signal(SIGQUIT, signal_handler);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
466
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
467 if (parse_config_file() == -1) goto clean_and_exit;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
468 open_logfiles();
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
469 if (!(toys.optflags & FLAG_n)) {
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
470 daemonize();
995
893c86bbe452 Add daemonize function to lib for klogd and syslogd
Felix Janda <felix.janda@posteo.de>
parents: 960
diff changeset
471 //don't daemonize again if SIGHUP received.
893c86bbe452 Add daemonize function to lib for klogd and syslogd
Felix Janda <felix.janda@posteo.de>
parents: 960
diff changeset
472 toys.optflags |= FLAG_n;
893c86bbe452 Add daemonize function to lib for klogd and syslogd
Felix Janda <felix.janda@posteo.de>
parents: 960
diff changeset
473 }
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
474 xpidfile("syslogd");
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
475
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
476 logmsg("<46>Toybox: syslogd started", 27); //27 : the length of message
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
477 for (;;) {
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
478 // Add opened socks to rfds for select()
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
479 FD_ZERO(&rfds);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
480 for (tsd = TT.lsocks; tsd; tsd = tsd->next) FD_SET(tsd->sd, &rfds);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
481 FD_SET(TT.sigfd[0], &rfds);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
482 tv.tv_usec = 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
483 tv.tv_sec = TT.interval*60;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
484
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
485 retval = select(TT.sigfd[0] + 1, &rfds, NULL, NULL, (TT.interval)?&tv:NULL);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
486 if (retval < 0) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
487 if (errno != EINTR) perror_msg("Error in select ");
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
488 }
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
489 else if (!retval) logmsg("<46>-- MARK --", 14);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
490 else if (FD_ISSET(TT.sigfd[0], &rfds)) { /* May be a signal */
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
491 unsigned char sig;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
492
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
493 if (read(TT.sigfd[0], &sig, 1) != 1) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
494 error_msg("signal read failed.\n");
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
495 continue;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
496 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
497 switch(sig) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
498 case SIGTERM: /* FALLTHROUGH */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
499 case SIGINT: /* FALLTHROUGH */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
500 case SIGQUIT:
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
501 logmsg("<46>syslogd exiting", 19);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
502 if (CFG_TOYBOX_FREE ) cleanup();
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
503 signal(sig, SIG_DFL);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
504 sigset_t ss;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
505 sigemptyset(&ss);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
506 sigaddset(&ss, sig);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
507 sigprocmask(SIG_UNBLOCK, &ss, NULL);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
508 raise(sig);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
509 _exit(1); /* Should not reach it */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
510 break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
511 case SIGHUP:
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
512 logmsg("<46>syslogd exiting", 19);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
513 cleanup(); //cleanup is done, as we restart syslog.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
514 goto init_jumpin;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
515 default: break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
516 }
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
517 } else { /* Some activity on listen sockets. */
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
518 for (tsd = TT.lsocks; tsd; tsd = tsd->next) {
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
519 int sd = tsd->sd;
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
520 if (FD_ISSET(sd, &rfds)) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
521 int len = read(sd, buffer, 1023); //buffer is of 1K, hence readingonly 1023 bytes, 1 for NUL
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
522 if (len > 0) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
523 buffer[len] = '\0';
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
524 if((toys.optflags & FLAG_D) && (len == last_len))
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
525 if (!memcmp(last_buf, buffer, len)) break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
526
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
527 memcpy(last_buf, buffer, len);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
528 last_len = len;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
529 logmsg(buffer, len);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
530 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
531 break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
532 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
533 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
534 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
535 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
536 clean_and_exit:
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
537 logmsg("<46>syslogd exiting", 19);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
538 if (CFG_TOYBOX_FREE ) cleanup();
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
539 }