annotate toys/pending/syslogd.c @ 1042:cbc467592b2e draft

Remove itoa/utoa, let libc do this with sprintf.
author Rob Landley <rob@landley.net>
date Tue, 03 Sep 2013 08:30:47 -0500
parents 58bfd974216d
children e11684e3bbc5
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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, char *buf)
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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 sprintf(buf, "%u", val);
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92
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93 return buf;
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94 }
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95
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96 /*
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97 * recurses the logfile list and resolves config
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98 * for evry file and updates facilty and log level bits.
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99 */
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100 static int resolve_config(struct logfile *file, char *config)
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101 {
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102 char *tk;
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103
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104 for (tk = strtok(config, "; \0"); tk; tk = strtok(NULL, "; \0")) {
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105 char *fac = tk, *lvl;
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106 int i = 0;
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107 unsigned facval = 0;
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108 uint8_t set, levval, bits = 0;
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109
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110 tk = strchr(fac, '.');
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111 if (!tk) return -1;
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112 *tk = '\0';
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113 lvl = tk + 1;
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114
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115 for (;;) {
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116 char *nfac = strchr(fac, ',');
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117
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118 if (nfac) *nfac = '\0';
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119 if (*fac == '*') {
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120 facval = 0xFFFFFFFF;
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121 if (fac[1]) return -1;
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122 } else {
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123 if ((i = logger_lookup(0, fac)) == -1) return -1;
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124 facval |= (1 << LOG_FAC(i));
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125 }
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126 if (nfac) fac = nfac + 1;
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127 else break;
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128 }
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129
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130 levval = 0;
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131 for (tk = "!=*"; *tk; tk++, bits <<= 1) {
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132 if (*lvl == *tk) {
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133 bits++;
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134 lvl++;
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135 }
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136 }
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137 if (bits & 2) levval = 0xff;
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138 if (*lvl) {
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139 if ((i = logger_lookup(1, lvl)) == -1) return -1;
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140 levval |= (bits & 4) ? LOG_MASK(i) : LOG_UPTO(i);
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141 if (bits & 8) levval = ~levval;
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142 }
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143
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144 for (i = 0, set = levval; set; set >>= 1, i++)
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145 if (set & 0x1) file->facility[i] |= ~facval;
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146 for (i = 0; i < LOG_NFACILITIES; facval >>= 1, i++)
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
147 if (facval & 0x1) file->level[i] |= ~levval;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
148 }
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 return 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
151 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
152
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
153 // Parse config file and update the log file list.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
154 static int parse_config_file(void)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
155 {
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
156 struct logfile *file;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
157 FILE *fp;
1027
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
158 char *confline, *tk[2];
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
159 int len, lineno = 0;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
160 size_t linelen;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
161 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
162 * if -K then open only /dev/kmsg
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
163 * all other log files are neglected
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
164 * thus no need to open config either.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
165 */
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
166 if (toys.optflags & FLAG_K) {
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
167 file = xzalloc(sizeof(struct logfile));
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
168 file->filename = xstrdup("/dev/kmsg");
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
169 TT.lfiles = file;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
170 return 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
171 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
172 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
173 * if -R then add remote host to log list
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
174 * if -L is not provided all other log
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
175 * files are neglected thus no need to
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
176 * open config either so just return.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
177 */
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
178 if (toys.optflags & FLAG_R) {
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
179 file = xzalloc(sizeof(struct logfile));
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
180 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
181 TT.lfiles = file;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
182 if (!(toys.optflags & FLAG_L)) return 0;
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
183 }
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
184 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
185 * Read config file and add logfiles to the list
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
186 * with their configuration.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
187 */
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
188 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
189 perror_exit("can't open '%s'", TT.config_file);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
190
1027
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
191 for (linelen = 0; fp;) {
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
192 confline = NULL;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
193 len = getline(&confline, &linelen, fp);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
194 if (len <= 0) break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
195 lineno++;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
196 for (; *confline == ' '; confline++, len--) ;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
197 if ((confline[0] == '#') || (confline[0] == '\n')) continue;
1027
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
198 tk[0] = confline;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
199 for (; len && !(*tk[0]==' ' || *tk[0]=='\t'); tk[0]++, len--);
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
200 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
201 if (!len || (len == 1 && *tk[1] == '\n')) {
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
202 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
203 return -1;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
204 }
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
205 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
206 *tk[0] = '\0';
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
207 if (*tk[1] != '*') {
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
208 file = TT.lfiles;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
209 while (file && strcmp(file->filename, tk[1])) file = file->next;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
210 if (!file) {
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
211 file = xzalloc(sizeof(struct logfile));
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
212 file->filename = xstrdup(tk[1]);
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
213 file->next = TT.lfiles;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
214 TT.lfiles = file;
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
215 }
4b0ad1c7af42 syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1026
diff changeset
216 if (resolve_config(file, confline) == -1) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
217 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
218 return -1;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
219 }
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 free(confline);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
222 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
223 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
224 * Can't open config file or support is not enabled
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
225 * adding default logfile to the head of list.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
226 */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
227 if (!fp){
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
228 file = xzalloc(sizeof(struct logfile));
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
229 file->filename = xstrdup((toys.optflags & FLAG_O) ?
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
230 TT.logfile : "/var/log/messages"); //DEFLOGFILE
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
231 file->next = TT.lfiles;
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
232 TT.lfiles = file;
1025
f19286ac3e7f syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1024
diff changeset
233 } else fclose(fp);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
234 return 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
235 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
236
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
237 // open every log file in list.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
238 static void open_logfiles(void)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
239 {
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
240 struct logfile *tfd;
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
241
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
242 for (tfd = TT.lfiles; tfd; tfd = tfd->next) {
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
243 char *p, *tmpfile;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
244 long port = 514;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
245
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
246 if (*tfd->filename == '@') { // network
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
247 struct addrinfo *info, rp;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
248
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
249 tmpfile = xstrdup(tfd->filename + 1);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
250 if ((p = strchr(tmpfile, ':'))) {
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
251 char *endptr;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
252
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
253 *p = '\0';
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
254 port = strtol(++p, &endptr, 10);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
255 if (*endptr || endptr == p || port < 0 || port > 65535)
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
256 error_exit("bad port in %s", tfd->filename);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
257 }
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
258 memset(&rp, 0, sizeof(rp));
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
259 rp.ai_family = AF_INET;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
260 rp.ai_socktype = SOCK_DGRAM;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
261 rp.ai_protocol = IPPROTO_UDP;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
262
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
263 if (getaddrinfo(tmpfile, NULL, &rp, &info) || !info)
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
264 perror_exit("BAD ADDRESS: can't find : %s ", tmpfile);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
265 ((struct sockaddr_in*)info->ai_addr)->sin_port = htons(port);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
266 memcpy(&tfd->saddr, info->ai_addr, info->ai_addrlen);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
267 freeaddrinfo(info);
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
268
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
269 tfd->logfd = xsocket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
270 free(tmpfile);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
271 } 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
272 if (tfd->logfd < 0) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
273 tfd->filename = "/dev/console";
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
274 tfd->logfd = open(tfd->filename, O_APPEND);
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 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
278
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
279 //write to file with rotation
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
280 static int write_rotate(struct logfile *tf, int len)
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
281 {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
282 int size, isreg;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
283 struct stat statf;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
284 isreg = (!fstat(tf->logfd, &statf) && S_ISREG(statf.st_mode));
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
285 size = statf.st_size;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
286
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
287 if ((toys.optflags & FLAG_s) || (toys.optflags & FLAG_b)) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
288 if (TT.rot_size && isreg && (size + len) > (TT.rot_size*1024)) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
289 if (TT.rot_count) { /* always 0..99 */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
290 int i = strlen(tf->filename) + 3 + 1;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
291 char old_file[i];
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
292 char new_file[i];
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
293 i = TT.rot_count - 1;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
294 while (1) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
295 sprintf(new_file, "%s.%d", tf->filename, i);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
296 if (!i) break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
297 sprintf(old_file, "%s.%d", tf->filename, --i);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
298 rename(old_file, new_file);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
299 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
300 rename(tf->filename, new_file);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
301 unlink(tf->filename);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
302 close(tf->logfd);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
303 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
304 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
305 ftruncate(tf->logfd, 0);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
306 }
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 return write(tf->logfd, toybuf, len);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
309 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
310
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
311 //Parse messege and write to file.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
312 static void logmsg(char *msg, int len)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
313 {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
314 time_t now;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
315 char *p, *ts, *lvlstr, *facstr;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
316 struct utsname uts;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
317 int pri = 0;
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
318 struct logfile *tf = TT.lfiles;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
319
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
320 char *omsg = msg;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
321 int olen = len, fac, lvl;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
322
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
323 if (*msg == '<') { // Extract the priority no.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
324 pri = (int) strtoul(msg + 1, &p, 10);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
325 if (*p == '>') msg = p + 1;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
326 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
327 /* Jan 18 00:11:22 msg...
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
328 * 01234567890123456
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
329 */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
330 if (len < 16 || msg[3] != ' ' || msg[6] != ' ' || msg[9] != ':'
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
331 || msg[12] != ':' || msg[15] != ' ') {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
332 time(&now);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
333 ts = ctime(&now) + 4; /* skip day of week */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
334 } else {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
335 now = 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
336 ts = msg;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
337 msg += 16;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
338 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
339 ts[15] = '\0';
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
340 fac = LOG_FAC(pri);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
341 lvl = LOG_PRI(pri);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
342
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
343 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
344 else {
1042
cbc467592b2e Remove itoa/utoa, let libc do this with sprintf.
Rob Landley <rob@landley.net>
parents: 1028
diff changeset
345 char facbuf[12], pribuf[12];
cbc467592b2e Remove itoa/utoa, let libc do this with sprintf.
Rob Landley <rob@landley.net>
parents: 1028
diff changeset
346
cbc467592b2e Remove itoa/utoa, let libc do this with sprintf.
Rob Landley <rob@landley.net>
parents: 1028
diff changeset
347 facstr = dec(pri & LOG_FACMASK, facilitynames, facbuf);
cbc467592b2e Remove itoa/utoa, let libc do this with sprintf.
Rob Landley <rob@landley.net>
parents: 1028
diff changeset
348 lvlstr = dec(LOG_PRI(pri), prioritynames, pribuf);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
349
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
350 p = "local";
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
351 if (!uname(&uts)) p = uts.nodename;
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
352 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
353 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
354 }
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
355 if (lvl >= TT.log_prio) return;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
356
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
357 for (; tf; tf = tf->next) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
358 if (tf->logfd > 0) {
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
359 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
360 int wlen, isNetwork = *tf->filename == '@';
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
361 if (isNetwork)
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
362 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
363 else wlen = write_rotate(tf, len);
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
364 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
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 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
368 }
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 /*
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
371 * closes all read and write fds
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
372 * and frees all nodes and lists
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
373 */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
374 static void cleanup(void)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
375 {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
376 while (TT.lsocks) {
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
377 struct unsocks *fnode = TT.lsocks;
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
378
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
379 if (fnode->sd >= 0) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
380 close(fnode->sd);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
381 unlink(fnode->path);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
382 }
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
383 TT.lsocks = fnode->next;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
384 free(fnode);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
385 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
386
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
387 while (TT.lfiles) {
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
388 struct logfile *fnode = TT.lfiles;
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
389
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
390 free(fnode->filename);
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
391 if (fnode->logfd >= 0) close(fnode->logfd);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
392 TT.lfiles = fnode->next;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
393 free(fnode);
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 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
396
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
397 static void signal_handler(int sig)
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 unsigned char ch = sig;
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
400 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
401 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
402
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
403 void syslogd_main(void)
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
404 {
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
405 struct unsocks *tsd;
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
406 int nfds, retval, last_len=0;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
407 struct timeval tv;
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
408 fd_set rfds; // fds for reading
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
409 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
410
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
411 if ((toys.optflags & FLAG_p) && (strlen(TT.unix_socket) > 108))
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
412 error_exit("Socket path should not be more than 108");
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
413
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
414 TT.config_file = (toys.optflags & FLAG_f) ?
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
415 TT.config_file : "/etc/syslog.conf"; //DEFCONFFILE
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
416 init_jumpin:
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
417 tsd = xzalloc(sizeof(struct unsocks));
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
418
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
419 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
420 TT.lsocks = tsd;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
421
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
422 if (toys.optflags & FLAG_a) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
423 for (temp = strtok(TT.socket, ":"); temp; temp = strtok(NULL, ":")) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
424 if (strlen(temp) > 107) temp[108] = '\0';
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
425 tsd = xzalloc(sizeof(struct unsocks));
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
426 tsd->path = temp;
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
427 tsd->next = TT.lsocks;
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
428 TT.lsocks = tsd;
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
429 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
430 }
1028
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 * initializes unsock_t structure
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
433 * and opens socket for reading
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
434 * and adds to global lsock list.
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
435 */
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
436 nfds = 0;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
437 for (tsd = TT.lsocks; tsd; tsd = tsd->next) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
438 tsd->sdu.sun_family = AF_UNIX;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
439 strcpy(tsd->sdu.sun_path, tsd->path);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
440 tsd->sd = socket(AF_UNIX, SOCK_DGRAM, 0);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
441 if (tsd->sd < 0) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
442 perror_msg("OPEN SOCKS : failed");
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
443 continue;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
444 }
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
445 unlink(tsd->sdu.sun_path);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
446 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
447 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
448 close(tsd->sd);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
449 continue;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
450 }
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
451 chmod(tsd->path, 0777);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
452 nfds++;
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
453 }
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
454 if (!nfds) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
455 error_msg("Can't open single socket for listenning.");
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
456 goto clean_and_exit;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
457 }
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
458
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
459 // Setup signals
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
460 if (pipe(TT.sigfd) < 0) error_exit("pipe failed\n");
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
461
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
462 fcntl(TT.sigfd[1] , F_SETFD, FD_CLOEXEC);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
463 fcntl(TT.sigfd[0] , F_SETFD, FD_CLOEXEC);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
464 int flags = fcntl(TT.sigfd[1], F_GETFL);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
465 fcntl(TT.sigfd[1], F_SETFL, flags | O_NONBLOCK);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
466 signal(SIGHUP, signal_handler);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
467 signal(SIGTERM, signal_handler);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
468 signal(SIGINT, signal_handler);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
469 signal(SIGQUIT, signal_handler);
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
470
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
471 if (parse_config_file() == -1) goto clean_and_exit;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
472 open_logfiles();
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
473 if (!(toys.optflags & FLAG_n)) {
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
474 daemonize();
995
893c86bbe452 Add daemonize function to lib for klogd and syslogd
Felix Janda <felix.janda@posteo.de>
parents: 960
diff changeset
475 //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
476 toys.optflags |= FLAG_n;
893c86bbe452 Add daemonize function to lib for klogd and syslogd
Felix Janda <felix.janda@posteo.de>
parents: 960
diff changeset
477 }
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
478 xpidfile("syslogd");
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
479
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
480 logmsg("<46>Toybox: syslogd started", 27); //27 : the length of message
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
481 for (;;) {
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
482 // Add opened socks to rfds for select()
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
483 FD_ZERO(&rfds);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
484 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
485 FD_SET(TT.sigfd[0], &rfds);
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
486 tv.tv_usec = 0;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
487 tv.tv_sec = TT.interval*60;
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 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
490 if (retval < 0) {
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
491 if (errno != EINTR) perror_msg("Error in select ");
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
492 }
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
493 else if (!retval) logmsg("<46>-- MARK --", 14);
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
494 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
495 unsigned char sig;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
496
1021
773e4862e790 syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1019
diff changeset
497 if (read(TT.sigfd[0], &sig, 1) != 1) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
498 error_msg("signal read failed.\n");
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
499 continue;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
500 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
501 switch(sig) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
502 case SIGTERM: /* FALLTHROUGH */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
503 case SIGINT: /* FALLTHROUGH */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
504 case SIGQUIT:
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
505 logmsg("<46>syslogd exiting", 19);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
506 if (CFG_TOYBOX_FREE ) cleanup();
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
507 signal(sig, SIG_DFL);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
508 sigset_t ss;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
509 sigemptyset(&ss);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
510 sigaddset(&ss, sig);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
511 sigprocmask(SIG_UNBLOCK, &ss, NULL);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
512 raise(sig);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
513 _exit(1); /* Should not reach it */
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
514 break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
515 case SIGHUP:
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
516 logmsg("<46>syslogd exiting", 19);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
517 cleanup(); //cleanup is done, as we restart syslog.
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
518 goto init_jumpin;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
519 default: break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
520 }
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
521 } else { /* Some activity on listen sockets. */
1026
09cc81f6e411 syslogd: stop abusing arg_list
Felix Janda <felix.janda at posteo.de>
parents: 1025
diff changeset
522 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
523 int sd = tsd->sd;
1028
58bfd974216d syslogd: cleanup
Felix Janda <felix.janda at posteo.de>
parents: 1027
diff changeset
524 if (FD_ISSET(sd, &rfds)) {
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
525 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
526 if (len > 0) {
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
527 buffer[len] = '\0';
1024
63b8e54d2c6f syslogd: cleanup
Felix Janda <felix.janda@posteo.de>
parents: 1021
diff changeset
528 if((toys.optflags & FLAG_D) && (len == last_len))
960
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
529 if (!memcmp(last_buf, buffer, len)) break;
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 memcpy(last_buf, buffer, len);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
532 last_len = len;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
533 logmsg(buffer, len);
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 break;
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
536 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
537 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
538 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
539 }
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
540 clean_and_exit:
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
541 logmsg("<46>syslogd exiting", 19);
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
542 if (CFG_TOYBOX_FREE ) cleanup();
c0627c163893 syslogd by Madhur Verma.
Rob Landley <rob@landley.net>
parents:
diff changeset
543 }