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1
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jbe@58
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2 /*** Version ***/
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3 #define MOONBR_VERSION_STRING "0.4.0"
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4
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5
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6 /*** Compile-time configuration ***/
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7
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8 #define MOONBR_LUA_PANIC_BUG_WORKAROUND 1
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9
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10
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11 /*** C preprocessor macros for portability support ***/
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12
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13 #ifndef __has_include
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14 #define __has_include(x) 0
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15 #endif
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16
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17
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18 /*** Include directives for used system libraries ***/
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19
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20 #if defined(__linux__)
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21 #define _GNU_SOURCE
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22 #endif
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23 #include <stdlib.h>
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24 #include <unistd.h>
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25 #include <stdint.h>
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26 #include <errno.h>
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27 #include <getopt.h>
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28 #include <syslog.h>
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29 #include <string.h>
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30 #include <stdio.h>
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31 #include <time.h>
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32 #include <sys/time.h>
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33 #include <sys/socket.h>
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34 #include <sys/un.h>
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35 #include <netinet/in.h>
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36 #include <poll.h>
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37 #include <signal.h>
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38 #include <sys/wait.h>
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39 #include <sys/resource.h>
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40 #include <sys/file.h>
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41 #if defined(__FreeBSD__) || __has_include(<libutil.h>)
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42 #include <libutil.h>
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43 #endif
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44 #if defined(__linux__) || __has_include(<bsd/stdio.h>)
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45 #include <bsd/stdio.h>
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46 #endif
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47 #if defined(__linux__) || __has_include(<bsd/libutil.h>)
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48 #include <bsd/libutil.h>
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49 #endif
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50 #if defined(__linux__) || __has_include(<bsd/unistd.h>)
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51 #include <bsd/unistd.h>
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52 #endif
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53
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54
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55 /*** Fallback definitions for missing constants on some platforms ***/
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56
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57 /* INFTIM is used as timeout parameter for poll() */
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58 #ifndef INFTIM
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59 #define INFTIM -1
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60 #endif
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61
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62
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63 /*** Include directives for Lua ***/
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64
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65 #include <lua.h>
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66 #include <lauxlib.h>
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67 #include <lualib.h>
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68
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69
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70 /*** Include directive for moonbridge_io library ***/
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71
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72 #include "moonbridge_io.h"
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73
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74
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jbe@0
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75 /*** Constants ***/
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76
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77 /* Backlog option for listen() call */
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78 #define MOONBR_LISTEN_BACKLOG 1024
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79
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80 /* Maximum length of a timestamp used for strftime() */
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81 #define MOONBR_LOG_MAXTIMELEN 40
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82
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83 /* Maximum length of a log message */
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84 #define MOONBR_LOG_MAXMSGLEN 4095
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85
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86 /* Exitcodes passed to exit() call */
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87 #define MOONBR_EXITCODE_GRACEFUL 0
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88 #define MOONBR_EXITCODE_CMDLINEERROR 1
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89 #define MOONBR_EXITCODE_ALREADYRUNNING 2
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90 #define MOONBR_EXITCODE_STARTUPERROR 3
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91 #define MOONBR_EXITCODE_RUNTIMEERROR 4
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92
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93 /* Maximum length of a line sent to stderr by child processes */
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94 #define MOONBR_MAXERRORLINELEN 1024
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95
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96 /* Maximum length of an error string returned by strerror() */
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97 #define MOONBR_MAXSTRERRORLEN 80
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98
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99 /* Status bytes exchanged between master and child processes */
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100 #define MOONBR_SOCKETTYPE_INTERVAL 'I'
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101 #define MOONBR_SOCKETTYPE_LOCAL 'L'
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jbe@0
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102 #define MOONBR_SOCKETTYPE_NETWORK 'N'
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103 #define MOONBR_STATUS_IDLE '1'
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104 #define MOONBR_COMMAND_TERMINATE '2'
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105 #define MOONBR_STATUS_GOODBYE '3'
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106
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107 /* Constant file descriptors */
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108 #define MOONBR_FD_STDERR 2
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109 #define MOONBR_FD_CONTROL 3
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110 #define MOONBR_FD_END 4
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111
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112 /* Return values of moonbr_try_destroy_worker() */
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113 #define MOONBR_DESTROY_NONE 0
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114 #define MOONBR_DESTROY_PREPARE 1
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115 #define MOONBR_DESTROY_IDLE_OR_ASSIGNED 2
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116
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117
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jbe@0
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118 /*** Types ***/
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119
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120 /* Enum for 'moonbr_pstate' */
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121 #define MOONBR_PSTATE_STARTUP 0
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122 #define MOONBR_PSTATE_RUNNING 1
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123 #define MOONBR_PSTATE_FORKED 2
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124
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125 /* Enum for 'proto' field of struct moonbr_listener */
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126 #define MOONBR_PROTO_INTERVAL 1
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127 #define MOONBR_PROTO_LOCAL 2
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128 #define MOONBR_PROTO_TCP6 3
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129 #define MOONBR_PROTO_TCP4 4
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130
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131 /* Data structure for a pool's listener that can accept incoming connections */
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132 struct moonbr_listener {
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133 struct moonbr_pool *pool;
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134 struct moonbr_listener *prev_listener; /* previous idle or(!) connected listener */
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135 struct moonbr_listener *next_listener; /* next idle or(!) connected listener */
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jbe@0
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136 int proto;
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137 union {
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138 struct {
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139 char *name; /* name of interval passed to 'connect' function as 'interval' field in table */
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140 int strict; /* nonzero = runtime of 'connect' function does not delay interval */
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jbe@0
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141 struct timeval delay; /* interval between invocations of 'connect' function */
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142 struct timeval wakeup; /* point in time of next invocation */
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143 } interval;
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144 struct {
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145 char *path; /* full path name (i.e. filename with path) of UNIX domain socket */
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146 } local;
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147 struct {
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148 int port; /* port number to listen on (in host endianess) */
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149 int localhost_only; /* nonzero = listen on localhost only */
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150 } tcp;
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151 } proto_specific;
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152 int listenfd; /* -1 = none */
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153 int pollidx; /* -1 = none */
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154 };
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155
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156 /* Data structure for a child process that is handling incoming connections */
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157 struct moonbr_worker {
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158 struct moonbr_pool *pool;
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159 struct moonbr_worker *prev_worker;
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160 struct moonbr_worker *next_worker;
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161 struct moonbr_worker *prev_idle_worker;
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162 struct moonbr_worker *next_idle_worker;
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163 int idle; /* nonzero = waiting for command from parent process */
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164 int assigned; /* nonzero = currently handling a connection */
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165 pid_t pid;
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166 int controlfd; /* socket to send/receive control message to/from child process */
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167 int errorfd; /* socket to receive error output from child process' stderr */
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168 char *errorlinebuf; /* optional buffer for collecting stderr data from child process */
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169 int errorlinelen; /* number of bytes stored in 'errorlinebuf' */
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170 int errorlineovf; /* nonzero = line length overflow */
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171 struct timeval idle_expiration; /* point in time until child process may stay in idle state */
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172 struct moonbr_listener *restart_interval_listener; /* set while interval listener is assigned */
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173 };
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174
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175 /* Data structure for a pool of workers and listeners */
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176 struct moonbr_pool {
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177 int poolnum; /* number of pool for log output */
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178 struct moonbr_pool *next_pool; /* next entry in linked list starting with 'moonbr_first_pool' */
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179 struct moonbr_worker *first_worker; /* first worker of pool */
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180 struct moonbr_worker *last_worker; /* last worker of pool */
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181 struct moonbr_worker *first_idle_worker; /* first idle worker of pool */
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182 struct moonbr_worker *last_idle_worker; /* last idle worker of pool */
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183 int idle_worker_count;
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184 int unassigned_worker_count;
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185 int total_worker_count;
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186 int worker_count_stat; /* only needed for statistics */
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187 int pre_fork; /* desired minimum number of unassigned workers */
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188 int min_fork; /* desired minimum number of workers in total */
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189 int max_fork; /* maximum number of workers */
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190 struct timeval fork_delay; /* delay after each fork() until a fork may happen again */
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191 struct timeval fork_wakeup; /* point in time when a fork may happen again (unless a worker terminates before) */
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192 struct timeval fork_error_delay; /* delay between fork()s when an error during fork or preparation occurred */
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193 struct timeval fork_error_wakeup; /* point in time when fork may happen again if an error in preparation occurred */
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jbe@0
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194 int use_fork_error_wakeup; /* nonzero = error in preparation occured; gets reset on next fork */
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195 struct timeval exit_delay; /* delay for terminating excessive workers (unassigned_worker_count > pre_fork) */
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196 struct timeval exit_wakeup; /* point in time when terminating an excessive worker */
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197 struct timeval idle_timeout; /* delay before an idle worker is terminated */
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198 size_t memory_limit; /* maximum bytes of memory that the Lua machine may allocate */
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199 int listener_count; /* total number of listeners of pool (and size of 'listener' array at end of this struct) */
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200 struct moonbr_listener *first_idle_listener; /* first listener that is idle (i.e. has no waiting connection) */
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201 struct moonbr_listener *last_idle_listener; /* last listener that is idle (i.e. has no waiting connection) */
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202 struct moonbr_listener *first_connected_listener; /* first listener that has a pending connection */
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203 struct moonbr_listener *last_connected_listener; /* last listener that has a pending connection */
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204 struct moonbr_listener listener[1]; /* static array of variable(!) size to contain 'listener' structures */
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205 };
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206
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207 /* Enum for 'channel' field of struct moonbr_poll_worker */
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208 #define MOONBR_POLL_WORKER_CONTROLCHANNEL 1
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209 #define MOONBR_POLL_WORKER_ERRORCHANNEL 2
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210
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211 /* Structure to refer from 'moonbr_poll_worker_fds' entry to worker structure */
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212 struct moonbr_poll_worker {
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213 struct moonbr_worker *worker;
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214 int channel; /* field indicating whether file descriptor is 'controlfd' or 'errorfd' */
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215 };
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216
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217 /* Variable indicating that clean shutdown was requested */
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218 static int moonbr_shutdown_in_progress = 0;
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219
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220
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jbe@0
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221 /*** Macros for Lua registry ***/
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222
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223 /* Lightuserdata keys for Lua registry to store 'prepare', 'connect', and 'finish' functions */
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224 #define moonbr_luakey_prepare_func(pool) ((void *)(intptr_t)(pool) + 0)
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225 #define moonbr_luakey_connect_func(pool) ((void *)(intptr_t)(pool) + 1)
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226 #define moonbr_luakey_finish_func(pool) ((void *)(intptr_t)(pool) + 2)
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227
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228
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jbe@0
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229 /*** Global variables ***/
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230
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231 /* State of process execution */
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232 static int moonbr_pstate = MOONBR_PSTATE_STARTUP;
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233
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234 /* Process ID of the main process */
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235 static pid_t moonbr_masterpid;
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236
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237 /* Condition variables set by the signal handler */
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238 static volatile sig_atomic_t moonbr_cond_poll = 0;
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239 static volatile sig_atomic_t moonbr_cond_terminate = 0;
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240 static volatile sig_atomic_t moonbr_cond_interrupt = 0;
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241 static volatile sig_atomic_t moonbr_cond_child = 0;
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242
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243 /* Socket pair to denote signal delivery when signal handler was called just before poll() */
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244 static int moonbr_poll_signalfds[2];
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245 #define moonbr_poll_signalfd_read moonbr_poll_signalfds[0]
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246 #define moonbr_poll_signalfd_write moonbr_poll_signalfds[1]
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247
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248 /* Global variables for pidfile and logging */
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249 static struct pidfh *moonbr_pidfh = NULL;
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250 static FILE *moonbr_logfile = NULL;
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251 static int moonbr_use_syslog = 0;
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252
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253 /* First and last entry of linked list of all created pools during initialization */
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254 static struct moonbr_pool *moonbr_first_pool = NULL;
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255 static struct moonbr_pool *moonbr_last_pool = NULL;
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256
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257 /* Total count of pools */
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258 static int moonbr_pool_count = 0;
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259
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260 /* Set to a nonzero value if dynamic part of 'moonbr_poll_fds' ('moonbr_poll_worker_fds') needs an update */
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jbe@0
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261 static int moonbr_poll_refresh_needed = 0;
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262
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263 /* Array passed to poll(), consisting of static part and dynamic part ('moonbr_poll_worker_fds') */
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jbe@0
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264 static struct pollfd *moonbr_poll_fds = NULL; /* the array */
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265 static int moonbr_poll_fds_bufsize = 0; /* memory allocated for this number of elements */
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266 static int moonbr_poll_fds_count = 0; /* total number of elements */
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267 static int moonbr_poll_fds_static_count; /* number of elements in static part */
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268
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269 /* Dynamic part of 'moonbr_poll_fds' array */
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270 #define moonbr_poll_worker_fds (moonbr_poll_fds+moonbr_poll_fds_static_count)
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271
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272 /* Additional information for dynamic part of 'moonbr_poll_fds' array */
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273 struct moonbr_poll_worker *moonbr_poll_workers; /* the array */
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274 static int moonbr_poll_workers_bufsize = 0; /* memory allocated for this number of elements */
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275 static int moonbr_poll_worker_count = 0; /* number of elements in array */
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276
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277 /* Variable set to nonzero value to disallow further calls of 'listen' function */
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278 static int moonbr_booted = 0;
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279
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280 /* Verbosity settings */
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281 static int moonbr_debug = 0;
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282 static int moonbr_stat = 0;
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283
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284 /* Memory consumption by Lua machine */
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285 static size_t moonbr_memory_usage = 0;
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286 static size_t moonbr_memory_limit = 0;
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287
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288
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jbe@0
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289 /*** Functions for signal handling ***/
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290
|
|
jbe@0
|
291 /* Signal handler for master and child processes */
|
|
jbe@0
|
292 static void moonbr_signal(int sig) {
|
|
jbe@0
|
293 if (getpid() == moonbr_masterpid) {
|
|
jbe@0
|
294 /* master process */
|
|
jbe@0
|
295 switch (sig) {
|
|
jbe@0
|
296 case SIGHUP:
|
|
jbe@0
|
297 case SIGINT:
|
|
jbe@0
|
298 /* fast shutdown requested */
|
|
jbe@0
|
299 moonbr_cond_interrupt = 1;
|
|
jbe@0
|
300 break;
|
|
jbe@0
|
301 case SIGTERM:
|
|
jbe@0
|
302 /* clean shutdown requested */
|
|
jbe@0
|
303 moonbr_cond_terminate = 1;
|
|
jbe@0
|
304 break;
|
|
jbe@0
|
305 case SIGCHLD:
|
|
jbe@0
|
306 /* child process terminated */
|
|
jbe@0
|
307 moonbr_cond_child = 1;
|
|
jbe@0
|
308 break;
|
|
jbe@0
|
309 }
|
|
jbe@0
|
310 if (moonbr_cond_poll) {
|
|
jbe@0
|
311 /* avoid race condition if signal handler is invoked right before poll() */
|
|
jbe@0
|
312 char buf[1] = {0};
|
|
jbe@20
|
313 write(moonbr_poll_signalfd_write, buf, 1);
|
|
jbe@0
|
314 }
|
|
jbe@0
|
315 } else {
|
|
jbe@0
|
316 /* child process forwards certain signals to parent process */
|
|
jbe@0
|
317 switch (sig) {
|
|
jbe@0
|
318 case SIGHUP:
|
|
jbe@0
|
319 case SIGINT:
|
|
jbe@0
|
320 case SIGTERM:
|
|
jbe@0
|
321 kill(moonbr_masterpid, sig);
|
|
jbe@0
|
322 }
|
|
jbe@0
|
323 }
|
|
jbe@0
|
324 }
|
|
jbe@0
|
325
|
|
jbe@0
|
326 /* Initialize signal handling */
|
|
jbe@0
|
327 static void moonbr_signal_init(){
|
|
jbe@0
|
328 moonbr_masterpid = getpid();
|
|
jbe@0
|
329 signal(SIGHUP, moonbr_signal);
|
|
jbe@0
|
330 signal(SIGINT, moonbr_signal);
|
|
jbe@0
|
331 signal(SIGTERM, moonbr_signal);
|
|
jbe@0
|
332 signal(SIGCHLD, moonbr_signal);
|
|
jbe@41
|
333 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
|
|
jbe@0
|
334 }
|
|
jbe@0
|
335
|
|
jbe@0
|
336
|
|
jbe@0
|
337 /*** Functions for logging in master process ***/
|
|
jbe@0
|
338
|
|
jbe@0
|
339 /* Logs a pre-formatted message with given syslog() priority */
|
|
jbe@0
|
340 static void moonbr_log_msg(int priority, const char *msg) {
|
|
jbe@0
|
341 if (moonbr_logfile) {
|
|
jbe@0
|
342 /* logging to logfile desired (timestamp is prepended in that case) */
|
|
jbe@0
|
343 time_t now_time = 0;
|
|
jbe@0
|
344 struct tm now_tmstruct;
|
|
jbe@0
|
345 char timestr[MOONBR_LOG_MAXTIMELEN+1];
|
|
jbe@0
|
346 time(&now_time);
|
|
jbe@0
|
347 localtime_r(&now_time, &now_tmstruct);
|
|
jbe@0
|
348 if (!strftime(
|
|
jbe@0
|
349 timestr, MOONBR_LOG_MAXTIMELEN+1, "%Y-%m-%d %H:%M:%S %Z: ", &now_tmstruct
|
|
jbe@0
|
350 )) timestr[0] = 0;
|
|
jbe@0
|
351 fprintf(moonbr_logfile, "%s%s\n", timestr, msg);
|
|
jbe@0
|
352 }
|
|
jbe@0
|
353 if (moonbr_use_syslog) {
|
|
jbe@0
|
354 /* logging through syslog desired */
|
|
jbe@0
|
355 syslog(priority, "%s", msg);
|
|
jbe@0
|
356 }
|
|
jbe@0
|
357 }
|
|
jbe@0
|
358
|
|
jbe@0
|
359 /* Formats a message via vsnprintf() and logs it with given syslog() priority */
|
|
jbe@0
|
360 static void moonbr_log(int priority, const char *message, ...) {
|
|
jbe@0
|
361 char msgbuf[MOONBR_LOG_MAXMSGLEN+1]; /* buffer of static size to store formatted message */
|
|
jbe@0
|
362 int msglen; /* length of full message (may exceed MOONBR_LOG_MAXMSGLEN) */
|
|
jbe@0
|
363 {
|
|
jbe@0
|
364 /* pass variable arguments to vsnprintf() to format message */
|
|
jbe@0
|
365 va_list ap;
|
|
jbe@0
|
366 va_start(ap, message);
|
|
jbe@0
|
367 msglen = vsnprintf(msgbuf, MOONBR_LOG_MAXMSGLEN+1, message, ap);
|
|
jbe@0
|
368 va_end(ap);
|
|
jbe@0
|
369 }
|
|
jbe@0
|
370 {
|
|
jbe@0
|
371 /* split and log message line by line */
|
|
jbe@0
|
372 char *line = msgbuf;
|
|
jbe@0
|
373 while (1) {
|
|
jbe@0
|
374 char *endptr = strchr(line, '\n');
|
|
jbe@0
|
375 if (endptr) {
|
|
jbe@0
|
376 /* terminate string where newline character is found */
|
|
jbe@0
|
377 *endptr = 0;
|
|
jbe@0
|
378 } else if (line != msgbuf && msglen > MOONBR_LOG_MAXMSGLEN) {
|
|
jbe@0
|
379 /* break if line is incomplete and not the first line */
|
|
jbe@0
|
380 break;
|
|
jbe@0
|
381 }
|
|
jbe@0
|
382 moonbr_log_msg(priority, line);
|
|
jbe@0
|
383 if (!endptr) break; /* break if end of formatted message is reached */
|
|
jbe@0
|
384 line = endptr+1; /* otherwise continue with remaining message */
|
|
jbe@0
|
385 }
|
|
jbe@0
|
386 }
|
|
jbe@0
|
387 if (msglen > MOONBR_LOG_MAXMSGLEN) {
|
|
jbe@0
|
388 /* print warning if message was truncated */
|
|
jbe@0
|
389 moonbr_log_msg(priority, "Previous log message has been truncated due to excessive length");
|
|
jbe@0
|
390 }
|
|
jbe@0
|
391 }
|
|
jbe@0
|
392
|
|
jbe@0
|
393
|
|
jbe@0
|
394 /*** Termination function ***/
|
|
jbe@0
|
395
|
|
jbe@0
|
396 /* Kill all child processes, remove PID file (if existent), and exit master process with given exitcode */
|
|
jbe@0
|
397 static void moonbr_terminate(int exitcode) {
|
|
jbe@0
|
398 {
|
|
jbe@0
|
399 struct moonbr_pool *pool;
|
|
jbe@0
|
400 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
401 {
|
|
jbe@0
|
402 struct moonbr_worker *worker;
|
|
jbe@0
|
403 for (worker=pool->first_worker; worker; worker=worker->next_worker) {
|
|
jbe@0
|
404 moonbr_log(LOG_INFO, "Sending SIGKILL to child with PID %i", (int)worker->pid);
|
|
jbe@0
|
405 if (kill(worker->pid, SIGKILL)) {
|
|
jbe@0
|
406 moonbr_log(LOG_ERR, "Error while killing child process: %s", strerror(errno));
|
|
jbe@0
|
407 }
|
|
jbe@0
|
408 }
|
|
jbe@0
|
409 }
|
|
jbe@0
|
410 {
|
|
jbe@0
|
411 int i;
|
|
jbe@0
|
412 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
413 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
414 if (listener->proto == MOONBR_PROTO_LOCAL) {
|
|
jbe@0
|
415 moonbr_log(LOG_INFO, "Unlinking local socket \"%s\"", listener->proto_specific.local.path);
|
|
jbe@0
|
416 if (unlink(listener->proto_specific.local.path)) {
|
|
jbe@0
|
417 moonbr_log(LOG_ERR, "Error while unlinking local socket: %s", strerror(errno));
|
|
jbe@0
|
418 }
|
|
jbe@0
|
419 }
|
|
jbe@0
|
420 }
|
|
jbe@0
|
421 }
|
|
jbe@0
|
422 }
|
|
jbe@0
|
423 }
|
|
jbe@0
|
424 moonbr_log(exitcode ? LOG_ERR : LOG_NOTICE, "Terminating with exit code %i", exitcode);
|
|
jbe@0
|
425 if (moonbr_pidfh && pidfile_remove(moonbr_pidfh)) {
|
|
jbe@0
|
426 moonbr_log(LOG_ERR, "Error while removing PID file: %s", strerror(errno));
|
|
jbe@0
|
427 }
|
|
jbe@0
|
428 exit(exitcode);
|
|
jbe@0
|
429 }
|
|
jbe@0
|
430
|
|
jbe@0
|
431 /* Terminate with either MOONBR_EXITCODE_STARTUPERROR or MOONBR_EXITCODE_RUNTIMEERROR */
|
|
jbe@0
|
432 #define moonbr_terminate_error() \
|
|
jbe@0
|
433 moonbr_terminate( \
|
|
jbe@0
|
434 moonbr_pstate == MOONBR_PSTATE_STARTUP ? \
|
|
jbe@0
|
435 MOONBR_EXITCODE_STARTUPERROR : \
|
|
jbe@0
|
436 MOONBR_EXITCODE_RUNTIMEERROR \
|
|
jbe@0
|
437 )
|
|
jbe@0
|
438
|
|
jbe@0
|
439
|
|
jbe@0
|
440 /*** Helper functions ***/
|
|
jbe@0
|
441
|
|
jbe@0
|
442 /* Fills a 'struct timeval' structure with the current time (using CLOCK_MONOTONIC) */
|
|
jbe@0
|
443 static void moonbr_now(struct timeval *now) {
|
|
jbe@0
|
444 struct timespec ts = {0, };
|
|
jbe@0
|
445 if (clock_gettime(CLOCK_MONOTONIC, &ts)) {
|
|
jbe@0
|
446 moonbr_log(LOG_CRIT, "Error in clock_gettime() call: %s", strerror(errno));
|
|
jbe@0
|
447 moonbr_terminate_error();
|
|
jbe@0
|
448 }
|
|
jbe@0
|
449 *now = (struct timeval){ .tv_sec = ts.tv_sec, .tv_usec = ts.tv_nsec / 1000 };
|
|
jbe@0
|
450 }
|
|
jbe@0
|
451
|
|
jbe@0
|
452 /* Formats a 'struct timeval' value (not thread-safe) */
|
|
jbe@0
|
453 static char *moonbr_format_timeval(struct timeval *t) {
|
|
jbe@0
|
454 static char buf[32];
|
|
jbe@0
|
455 snprintf(buf, 32, "%ji.%06ji seconds", (intmax_t)t->tv_sec, (intmax_t)t->tv_usec);
|
|
jbe@0
|
456 return buf;
|
|
jbe@0
|
457 }
|
|
jbe@0
|
458
|
|
jbe@0
|
459
|
|
jbe@0
|
460 /*** Functions for pool creation and startup ***/
|
|
jbe@0
|
461
|
|
jbe@0
|
462 /* Creates a 'struct moonbr_pool' structure with a given number of listeners */
|
|
jbe@0
|
463 static struct moonbr_pool *moonbr_create_pool(int listener_count) {
|
|
jbe@0
|
464 struct moonbr_pool *pool;
|
|
jbe@0
|
465 pool = calloc(1,
|
|
jbe@0
|
466 sizeof(struct moonbr_pool) + /* size of 'struct moonbr_pool' with one listener */
|
|
jbe@0
|
467 (listener_count-1) * sizeof(struct moonbr_listener) /* size of extra listeners */
|
|
jbe@0
|
468 );
|
|
jbe@0
|
469 if (!pool) {
|
|
jbe@0
|
470 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
471 moonbr_terminate_error();
|
|
jbe@0
|
472 }
|
|
jbe@0
|
473 pool->listener_count = listener_count;
|
|
jbe@0
|
474 {
|
|
jbe@0
|
475 /* initialization of listeners */
|
|
jbe@0
|
476 int i;
|
|
jbe@0
|
477 for (i=0; i<listener_count; i++) {
|
|
jbe@0
|
478 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
479 listener->pool = pool;
|
|
jbe@0
|
480 listener->listenfd = -1;
|
|
jbe@0
|
481 listener->pollidx = -1;
|
|
jbe@0
|
482 }
|
|
jbe@0
|
483 }
|
|
jbe@0
|
484 return pool;
|
|
jbe@0
|
485 }
|
|
jbe@0
|
486
|
|
jbe@0
|
487 /* Destroys a 'struct moonbr_pool' structure before it has been started */
|
|
jbe@0
|
488 static void moonbr_destroy_pool(struct moonbr_pool *pool) {
|
|
jbe@0
|
489 int i;
|
|
jbe@0
|
490 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
491 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
492 if (
|
|
jbe@0
|
493 listener->proto == MOONBR_PROTO_INTERVAL &&
|
|
jbe@0
|
494 listener->proto_specific.interval.name
|
|
jbe@0
|
495 ) {
|
|
jbe@0
|
496 free(listener->proto_specific.interval.name);
|
|
jbe@0
|
497 }
|
|
jbe@0
|
498 if (
|
|
jbe@0
|
499 listener->proto == MOONBR_PROTO_LOCAL &&
|
|
jbe@0
|
500 listener->proto_specific.local.path
|
|
jbe@0
|
501 ) {
|
|
jbe@0
|
502 free(listener->proto_specific.local.path);
|
|
jbe@0
|
503 }
|
|
jbe@0
|
504 }
|
|
jbe@0
|
505 free(pool);
|
|
jbe@0
|
506 }
|
|
jbe@0
|
507
|
|
jbe@0
|
508 /* Starts a all listeners in a pool */
|
|
jbe@0
|
509 static int moonbr_start_pool(struct moonbr_pool *pool) {
|
|
jbe@0
|
510 moonbr_log(LOG_INFO, "Creating pool", pool->poolnum);
|
|
jbe@0
|
511 {
|
|
jbe@0
|
512 int i;
|
|
jbe@0
|
513 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
514 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
515 switch (listener->proto) {
|
|
jbe@0
|
516 case MOONBR_PROTO_INTERVAL:
|
|
jbe@17
|
517 /* nothing to do here: starting intervals is performed in moonbr_run() function */
|
|
jbe@0
|
518 if (!listener->proto_specific.interval.name) {
|
|
jbe@0
|
519 moonbr_log(LOG_INFO, "Adding unnamed interval listener");
|
|
jbe@0
|
520 } else {
|
|
jbe@0
|
521 moonbr_log(LOG_INFO, "Adding interval listener \"%s\"", listener->proto_specific.interval.name);
|
|
jbe@0
|
522 }
|
|
jbe@0
|
523 break;
|
|
jbe@0
|
524 case MOONBR_PROTO_LOCAL:
|
|
jbe@0
|
525 moonbr_log(LOG_INFO, "Adding local socket listener for path \"%s\"", listener->proto_specific.local.path);
|
|
jbe@0
|
526 {
|
|
jbe@0
|
527 struct sockaddr_un servaddr = { .sun_family = AF_UNIX };
|
|
jbe@0
|
528 const int path_maxlen = sizeof(struct sockaddr_un) - (
|
|
jbe@0
|
529 (void *)&servaddr.sun_path - (void *)&servaddr
|
|
jbe@0
|
530 );
|
|
jbe@0
|
531 if (
|
|
jbe@0
|
532 snprintf(
|
|
jbe@0
|
533 servaddr.sun_path,
|
|
jbe@0
|
534 path_maxlen,
|
|
jbe@0
|
535 "%s",
|
|
jbe@0
|
536 listener->proto_specific.local.path
|
|
jbe@0
|
537 ) >= path_maxlen
|
|
jbe@0
|
538 ) {
|
|
jbe@0
|
539 errno = ENAMETOOLONG;
|
|
jbe@0
|
540 };
|
|
jbe@0
|
541 listener->listenfd = socket(PF_LOCAL, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
|
|
jbe@0
|
542 if (listener->listenfd == -1) goto moonbr_start_pool_error;
|
|
jbe@0
|
543 if (!unlink(listener->proto_specific.local.path)) {
|
|
jbe@0
|
544 moonbr_log(LOG_WARNING, "Unlinked named socket \"%s\" prior to listening", listener->proto_specific.local.path);
|
|
jbe@0
|
545 } else {
|
|
jbe@0
|
546 if (errno != ENOENT) {
|
|
jbe@0
|
547 moonbr_log(LOG_ERR, "Could not unlink named socket \"%s\" prior to listening: %s", listener->proto_specific.local.path, strerror(errno));
|
|
jbe@0
|
548 }
|
|
jbe@0
|
549 }
|
|
jbe@0
|
550 if (
|
|
jbe@0
|
551 bind(listener->listenfd, (struct sockaddr *)&servaddr, sizeof(servaddr))
|
|
jbe@0
|
552 ) goto moonbr_start_pool_error;
|
|
jbe@0
|
553 if (listen(listener->listenfd, MOONBR_LISTEN_BACKLOG)) goto moonbr_start_pool_error;
|
|
jbe@0
|
554 }
|
|
jbe@0
|
555 break;
|
|
jbe@0
|
556 case MOONBR_PROTO_TCP6:
|
|
jbe@0
|
557 if (listener->proto_specific.tcp.localhost_only) {
|
|
jbe@0
|
558 moonbr_log(LOG_INFO, "Adding localhost TCP/IPv6 listener on port %i", listener->proto_specific.tcp.port);
|
|
jbe@0
|
559 } else {
|
|
jbe@0
|
560 moonbr_log(LOG_INFO, "Adding public TCP/IPv6 listener on port %i", listener->proto_specific.tcp.port);
|
|
jbe@0
|
561 }
|
|
jbe@0
|
562 {
|
|
jbe@0
|
563 struct sockaddr_in6 servaddr = {
|
|
jbe@0
|
564 .sin6_family = AF_INET6,
|
|
jbe@0
|
565 .sin6_port = htons(listener->proto_specific.tcp.port)
|
|
jbe@0
|
566 };
|
|
jbe@0
|
567 listener->listenfd = socket(PF_INET6, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
|
|
jbe@0
|
568 if (listener->listenfd == -1) goto moonbr_start_pool_error;
|
|
jbe@0
|
569 {
|
|
jbe@0
|
570 /* avoid "Address already in use" error when restarting service */
|
|
jbe@0
|
571 static const int reuseval = 1;
|
|
jbe@0
|
572 if (setsockopt(
|
|
jbe@0
|
573 listener->listenfd, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval)
|
|
jbe@0
|
574 )) goto moonbr_start_pool_error;
|
|
jbe@0
|
575 }
|
|
jbe@0
|
576 {
|
|
jbe@0
|
577 /* default to send TCP RST when process terminates unexpectedly */
|
|
jbe@0
|
578 static const struct linger lingerval = {
|
|
jbe@0
|
579 .l_onoff = 1,
|
|
jbe@0
|
580 .l_linger = 0
|
|
jbe@0
|
581 };
|
|
jbe@0
|
582 if (setsockopt(
|
|
jbe@0
|
583 listener->listenfd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval)
|
|
jbe@0
|
584 )) goto moonbr_start_pool_error;
|
|
jbe@0
|
585 }
|
|
jbe@0
|
586 if (listener->proto_specific.tcp.localhost_only) {
|
|
jbe@0
|
587 servaddr.sin6_addr.s6_addr[15] = 1;
|
|
jbe@0
|
588 }
|
|
jbe@0
|
589 if (
|
|
jbe@0
|
590 bind(listener->listenfd, (struct sockaddr *)&servaddr, sizeof(servaddr))
|
|
jbe@0
|
591 ) goto moonbr_start_pool_error;
|
|
jbe@0
|
592 if (listen(listener->listenfd, MOONBR_LISTEN_BACKLOG)) goto moonbr_start_pool_error;
|
|
jbe@0
|
593 }
|
|
jbe@0
|
594 break;
|
|
jbe@0
|
595 case MOONBR_PROTO_TCP4:
|
|
jbe@0
|
596 if (listener->proto_specific.tcp.localhost_only) {
|
|
jbe@0
|
597 moonbr_log(LOG_INFO, "Adding localhost TCP/IPv4 listener on port %i", listener->proto_specific.tcp.port);
|
|
jbe@0
|
598 } else {
|
|
jbe@0
|
599 moonbr_log(LOG_INFO, "Adding public TCP/IPv4 listener on port %i", listener->proto_specific.tcp.port);
|
|
jbe@0
|
600 }
|
|
jbe@0
|
601 {
|
|
jbe@0
|
602 struct sockaddr_in servaddr = {
|
|
jbe@0
|
603 .sin_family = AF_INET,
|
|
jbe@0
|
604 .sin_port = htons(listener->proto_specific.tcp.port)
|
|
jbe@0
|
605 };
|
|
jbe@0
|
606 listener->listenfd = socket(PF_INET, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
|
|
jbe@0
|
607 if (listener->listenfd == -1) goto moonbr_start_pool_error;
|
|
jbe@0
|
608 {
|
|
jbe@0
|
609 /* avoid "Address already in use" error when restarting service */
|
|
jbe@0
|
610 static const int reuseval = 1;
|
|
jbe@0
|
611 if (setsockopt(
|
|
jbe@0
|
612 listener->listenfd, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval)
|
|
jbe@0
|
613 )) goto moonbr_start_pool_error;
|
|
jbe@0
|
614 }
|
|
jbe@0
|
615 {
|
|
jbe@0
|
616 /* default to send TCP RST when process terminates unexpectedly */
|
|
jbe@0
|
617 static const struct linger lingerval = {
|
|
jbe@0
|
618 .l_onoff = 1,
|
|
jbe@0
|
619 .l_linger = 0
|
|
jbe@0
|
620 };
|
|
jbe@0
|
621 if (setsockopt(
|
|
jbe@0
|
622 listener->listenfd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval)
|
|
jbe@0
|
623 )) goto moonbr_start_pool_error;
|
|
jbe@0
|
624 }
|
|
jbe@0
|
625 if (listener->proto_specific.tcp.localhost_only) {
|
|
jbe@0
|
626 ((uint8_t *)&servaddr.sin_addr.s_addr)[0] = 127;
|
|
jbe@0
|
627 ((uint8_t *)&servaddr.sin_addr.s_addr)[3] = 1;
|
|
jbe@0
|
628 }
|
|
jbe@0
|
629 if (
|
|
jbe@0
|
630 bind(listener->listenfd, (struct sockaddr *)&servaddr, sizeof(servaddr))
|
|
jbe@0
|
631 ) goto moonbr_start_pool_error;
|
|
jbe@0
|
632 if (listen(listener->listenfd, MOONBR_LISTEN_BACKLOG)) goto moonbr_start_pool_error;
|
|
jbe@0
|
633 }
|
|
jbe@0
|
634 break;
|
|
jbe@0
|
635 default:
|
|
jbe@0
|
636 moonbr_log(LOG_CRIT, "Internal error (should not happen): Unexpected value in listener.proto field");
|
|
jbe@0
|
637 moonbr_terminate_error();
|
|
jbe@0
|
638 }
|
|
jbe@0
|
639 }
|
|
jbe@0
|
640 goto moonbr_start_pool_ok;
|
|
jbe@0
|
641 moonbr_start_pool_error:
|
|
jbe@0
|
642 {
|
|
jbe@0
|
643 int j = i;
|
|
jbe@0
|
644 int errno2 = errno;
|
|
jbe@0
|
645 for (; i>=0; i--) {
|
|
jbe@0
|
646 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
647 if (listener->listenfd != -1) close(listener->listenfd);
|
|
jbe@0
|
648 }
|
|
jbe@0
|
649 errno = errno2;
|
|
jbe@0
|
650 return j;
|
|
jbe@0
|
651 }
|
|
jbe@0
|
652 }
|
|
jbe@0
|
653 moonbr_start_pool_ok:
|
|
jbe@0
|
654 pool->poolnum = ++moonbr_pool_count;
|
|
jbe@0
|
655 moonbr_log(LOG_INFO, "Pool #%i created", pool->poolnum);
|
|
jbe@0
|
656 if (moonbr_last_pool) moonbr_last_pool->next_pool = pool;
|
|
jbe@0
|
657 else moonbr_first_pool = pool;
|
|
jbe@0
|
658 moonbr_last_pool = pool;
|
|
jbe@0
|
659 return -1;
|
|
jbe@0
|
660 }
|
|
jbe@0
|
661
|
|
jbe@0
|
662
|
|
jbe@0
|
663 /*** Function to send data and a file descriptor to child process */
|
|
jbe@0
|
664
|
|
jbe@0
|
665 /* Sends control message of one bye plus optional file descriptor plus optional pointer to child process */
|
|
jbe@0
|
666 static void moonbr_send_control_message(struct moonbr_worker *worker, char status, int fd, void *ptr) {
|
|
jbe@0
|
667 {
|
|
jbe@0
|
668 struct iovec iovector = { .iov_base = &status, .iov_len = 1 }; /* carrying status byte */
|
|
jbe@0
|
669 char control_message_buffer[CMSG_SPACE(sizeof(int))] = {0, }; /* used to transfer file descriptor */
|
|
jbe@0
|
670 struct msghdr message = { .msg_iov = &iovector, .msg_iovlen = 1 }; /* data structure passed to sendmsg() call */
|
|
jbe@0
|
671 if (moonbr_debug) {
|
|
jbe@0
|
672 if (fd == -1) {
|
|
jbe@0
|
673 moonbr_log(LOG_DEBUG, "Sending control message \"%c\" to child process in pool #%i (PID %i)", (int)status, worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
674 } else {
|
|
jbe@0
|
675 moonbr_log(LOG_DEBUG, "Sending control message \"%c\" with file descriptor #%i to child process in pool #%i (PID %i)", (int)status, fd, worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
676 }
|
|
jbe@0
|
677 }
|
|
jbe@0
|
678 if (fd != -1) {
|
|
jbe@0
|
679 /* attach control message with file descriptor */
|
|
jbe@0
|
680 message.msg_control = control_message_buffer;
|
|
jbe@0
|
681 message.msg_controllen = CMSG_SPACE(sizeof(int));
|
|
jbe@0
|
682 {
|
|
jbe@0
|
683 struct cmsghdr *control_message = CMSG_FIRSTHDR(&message);
|
|
jbe@0
|
684 control_message->cmsg_level = SOL_SOCKET;
|
|
jbe@0
|
685 control_message->cmsg_type = SCM_RIGHTS;
|
|
jbe@0
|
686 control_message->cmsg_len = CMSG_LEN(sizeof(int));
|
|
jbe@18
|
687 memcpy(CMSG_DATA(control_message), &fd, sizeof(int));
|
|
jbe@0
|
688 }
|
|
jbe@0
|
689 }
|
|
jbe@0
|
690 while (sendmsg(worker->controlfd, &message, MSG_NOSIGNAL) < 0) {
|
|
jbe@0
|
691 if (errno == EPIPE) {
|
|
jbe@0
|
692 moonbr_log(LOG_ERR, "Error while communicating with idle child process in pool #%i (PID %i): %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
693 return; /* do not close socket; socket is closed when reading from it */
|
|
jbe@0
|
694 }
|
|
jbe@0
|
695 if (errno != EINTR) {
|
|
jbe@0
|
696 moonbr_log(LOG_CRIT, "Unexpected error while communicating with idle child process in pool #%i (PID %i): %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
697 moonbr_terminate_error();
|
|
jbe@0
|
698 }
|
|
jbe@0
|
699 }
|
|
jbe@0
|
700 }
|
|
jbe@0
|
701 if (ptr) {
|
|
jbe@0
|
702 char buf[sizeof(void *)];
|
|
jbe@0
|
703 char *pos = buf;
|
|
jbe@0
|
704 int len = sizeof(void *);
|
|
jbe@0
|
705 ssize_t written;
|
|
jbe@0
|
706 if (moonbr_debug) {
|
|
jbe@0
|
707 moonbr_log(LOG_DEBUG, "Sending memory pointer to child process in pool #%i (PID %i)", (int)status, worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
708 }
|
|
jbe@18
|
709 memcpy(buf, &ptr, sizeof(void *));
|
|
jbe@0
|
710 while (len) {
|
|
jbe@0
|
711 written = send(worker->controlfd, pos, len, MSG_NOSIGNAL);
|
|
jbe@0
|
712 if (written > 0) {
|
|
jbe@0
|
713 pos += written;
|
|
jbe@0
|
714 len -= written;
|
|
jbe@0
|
715 } else if (errno == EPIPE) {
|
|
jbe@0
|
716 moonbr_log(LOG_ERR, "Error while communicating with idle child process in pool #%i (PID %i): %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
717 return; /* do not close socket; socket is closed when reading from it */
|
|
jbe@0
|
718 } else if (errno != EINTR) {
|
|
jbe@0
|
719 moonbr_log(LOG_CRIT, "Unexpected error while communicating with idle child process in pool #%i (PID %i): %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
720 moonbr_terminate_error();
|
|
jbe@0
|
721 }
|
|
jbe@0
|
722 }
|
|
jbe@0
|
723 }
|
|
jbe@0
|
724 }
|
|
jbe@0
|
725
|
|
jbe@0
|
726
|
|
jbe@0
|
727 /*** Functions running in child process ***/
|
|
jbe@0
|
728
|
|
jbe@0
|
729 /* Logs an error in child process */
|
|
jbe@0
|
730 static void moonbr_child_log(const char *message) {
|
|
jbe@0
|
731 fprintf(stderr, "%s\n", message);
|
|
jbe@0
|
732 }
|
|
jbe@0
|
733
|
|
jbe@0
|
734 /* Logs a fatal error in child process and terminates process with error status */
|
|
jbe@0
|
735 static void moonbr_child_log_fatal(const char *message) {
|
|
jbe@0
|
736 moonbr_child_log(message);
|
|
jbe@0
|
737 exit(1);
|
|
jbe@0
|
738 }
|
|
jbe@0
|
739
|
|
jbe@0
|
740 /* Logs an error in child process while appending error string for global errno variable */
|
|
jbe@0
|
741 static void moonbr_child_log_errno(const char *message) {
|
|
jbe@0
|
742 char errmsg[MOONBR_MAXSTRERRORLEN];
|
|
jbe@20
|
743 strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN); /* use thread-safe call in case child created threads */
|
|
jbe@0
|
744 fprintf(stderr, "%s: %s\n", message, errmsg);
|
|
jbe@0
|
745 }
|
|
jbe@0
|
746
|
|
jbe@0
|
747 /* Logs a fatal error in child process while appending error string for errno and terminating process */
|
|
jbe@0
|
748 static void moonbr_child_log_errno_fatal(const char *message) {
|
|
jbe@0
|
749 moonbr_child_log_errno(message);
|
|
jbe@0
|
750 exit(1);
|
|
jbe@0
|
751 }
|
|
jbe@0
|
752
|
|
jbe@0
|
753 /* Receives a control message consisting of one character plus an optional file descriptor from parent process */
|
|
jbe@0
|
754 static void moonbr_child_receive_control_message(int socketfd, char *status, int *fd) {
|
|
jbe@0
|
755 struct iovec iovector = { .iov_base = status, .iov_len = 1 }; /* reference to status byte variable */
|
|
jbe@0
|
756 char control_message_buffer[CMSG_SPACE(sizeof(int))] = {0, }; /* used to receive file descriptor */
|
|
jbe@0
|
757 struct msghdr message = { /* data structure passed to recvmsg() call */
|
|
jbe@0
|
758 .msg_iov = &iovector,
|
|
jbe@0
|
759 .msg_iovlen = 1,
|
|
jbe@0
|
760 .msg_control = control_message_buffer,
|
|
jbe@0
|
761 .msg_controllen = CMSG_SPACE(sizeof(int))
|
|
jbe@0
|
762 };
|
|
jbe@0
|
763 {
|
|
jbe@0
|
764 int received;
|
|
jbe@0
|
765 while ((received = recvmsg(socketfd, &message, MSG_CMSG_CLOEXEC)) < 0) {
|
|
jbe@0
|
766 if (errno != EINTR) {
|
|
jbe@0
|
767 moonbr_child_log_errno_fatal("Error while trying to receive connection socket from parent process");
|
|
jbe@0
|
768 }
|
|
jbe@0
|
769 }
|
|
jbe@0
|
770 if (!received) {
|
|
jbe@0
|
771 moonbr_child_log_fatal("Unexpected EOF while trying to receive connection socket from parent process");
|
|
jbe@0
|
772 }
|
|
jbe@0
|
773 }
|
|
jbe@0
|
774 {
|
|
jbe@0
|
775 struct cmsghdr *control_message = CMSG_FIRSTHDR(&message);
|
|
jbe@0
|
776 if (control_message) {
|
|
jbe@0
|
777 if (control_message->cmsg_level != SOL_SOCKET) {
|
|
jbe@0
|
778 moonbr_child_log_fatal("Received control message with cmsg_level not equal to SOL_SOCKET");
|
|
jbe@0
|
779 }
|
|
jbe@0
|
780 if (control_message->cmsg_type != SCM_RIGHTS) {
|
|
jbe@0
|
781 moonbr_child_log_fatal("Received control message with cmsg_type not equal to SCM_RIGHTS");
|
|
jbe@0
|
782 }
|
|
jbe@18
|
783 memcpy(fd, CMSG_DATA(control_message), sizeof(int));
|
|
jbe@0
|
784 } else {
|
|
jbe@0
|
785 *fd = -1;
|
|
jbe@0
|
786 }
|
|
jbe@0
|
787 }
|
|
jbe@0
|
788 }
|
|
jbe@0
|
789
|
|
jbe@0
|
790 /* Receives a pointer from parent process */
|
|
jbe@0
|
791 static void *moonbr_child_receive_pointer(int socketfd) {
|
|
jbe@0
|
792 char buf[sizeof(void *)];
|
|
jbe@0
|
793 char *pos = buf;
|
|
jbe@0
|
794 int len = sizeof(void *);
|
|
jbe@0
|
795 ssize_t bytes_read;
|
|
jbe@0
|
796 while (len) {
|
|
jbe@0
|
797 bytes_read = recv(socketfd, pos, len, 0);
|
|
jbe@0
|
798 if (bytes_read > 0) {
|
|
jbe@0
|
799 pos += bytes_read;
|
|
jbe@0
|
800 len -= bytes_read;
|
|
jbe@0
|
801 } else if (!bytes_read) {
|
|
jbe@0
|
802 moonbr_child_log_fatal("Unexpected EOF while trying to receive memory pointer from parent process");
|
|
jbe@0
|
803 } else if (errno != EINTR) {
|
|
jbe@0
|
804 moonbr_child_log_errno_fatal("Error while trying to receive memory pointer from parent process");
|
|
jbe@0
|
805 }
|
|
jbe@0
|
806 }
|
|
jbe@18
|
807 {
|
|
jbe@18
|
808 void *ptr; /* avoid breaking strict-aliasing rules */
|
|
jbe@18
|
809 memcpy(&ptr, buf, sizeof(void *));
|
|
jbe@18
|
810 return ptr;
|
|
jbe@18
|
811 }
|
|
jbe@0
|
812 }
|
|
jbe@0
|
813
|
|
jbe@0
|
814 /* Main function of child process to be called after fork() and file descriptor rearrangement */
|
|
jbe@0
|
815 void moonbr_child_run(struct moonbr_pool *pool, lua_State *L) {
|
|
jbe@0
|
816 char controlmsg;
|
|
jbe@88
|
817 int fd;
|
|
jbe@0
|
818 struct itimerval notimer = { { 0, }, { 0, } };
|
|
jbe@0
|
819 lua_rawgetp(L, LUA_REGISTRYINDEX, moonbr_luakey_prepare_func(pool));
|
|
jbe@0
|
820 if (lua_isnil(L, -1)) lua_pop(L, 1);
|
|
jbe@0
|
821 else if (lua_pcall(L, 0, 0, 1)) {
|
|
jbe@0
|
822 fprintf(stderr, "Error in \"prepare\" function: %s\n", lua_tostring(L, -1));
|
|
jbe@0
|
823 exit(1);
|
|
jbe@0
|
824 }
|
|
jbe@0
|
825 while (1) {
|
|
jbe@0
|
826 struct moonbr_listener *listener;
|
|
jbe@0
|
827 if (setitimer(ITIMER_REAL, ¬imer, NULL)) {
|
|
jbe@0
|
828 moonbr_child_log_errno_fatal("Could not reset ITIMER_REAL via setitimer()");
|
|
jbe@0
|
829 }
|
|
jbe@0
|
830 controlmsg = MOONBR_STATUS_IDLE;
|
|
jbe@0
|
831 if (write(MOONBR_FD_CONTROL, &controlmsg, 1) <= 0) {
|
|
jbe@0
|
832 moonbr_child_log_errno_fatal("Error while sending ready message to parent process");
|
|
jbe@0
|
833 }
|
|
jbe@88
|
834 moonbr_child_receive_control_message(MOONBR_FD_CONTROL, &controlmsg, &fd);
|
|
jbe@0
|
835 if (!(
|
|
jbe@88
|
836 (controlmsg == MOONBR_COMMAND_TERMINATE && fd == -1) ||
|
|
jbe@88
|
837 (controlmsg == MOONBR_SOCKETTYPE_INTERVAL && fd == -1) ||
|
|
jbe@88
|
838 (controlmsg == MOONBR_SOCKETTYPE_LOCAL && fd != -1) ||
|
|
jbe@88
|
839 (controlmsg == MOONBR_SOCKETTYPE_NETWORK && fd != -1)
|
|
jbe@0
|
840 )) {
|
|
jbe@0
|
841 moonbr_child_log_fatal("Received illegal control message from parent process");
|
|
jbe@0
|
842 }
|
|
jbe@0
|
843 if (controlmsg == MOONBR_COMMAND_TERMINATE) break;
|
|
jbe@0
|
844 listener = moonbr_child_receive_pointer(MOONBR_FD_CONTROL);
|
|
jbe@88
|
845 if (fd) moonbr_io_pushhandle(L, fd, 1, controlmsg == MOONBR_SOCKETTYPE_NETWORK);
|
|
jbe@0
|
846 lua_rawgetp(L, LUA_REGISTRYINDEX, moonbr_luakey_connect_func(pool));
|
|
jbe@88
|
847 if (!fd) {
|
|
jbe@0
|
848 lua_newtable(L);
|
|
jbe@0
|
849 lua_pushstring(L,
|
|
jbe@0
|
850 listener->proto_specific.interval.name ?
|
|
jbe@0
|
851 listener->proto_specific.interval.name : ""
|
|
jbe@0
|
852 );
|
|
jbe@0
|
853 lua_setfield(L, -2, "interval");
|
|
jbe@0
|
854 } else {
|
|
jbe@88
|
855 lua_pushvalue(L, -2);
|
|
jbe@0
|
856 if (listener->proto == MOONBR_PROTO_TCP6) {
|
|
jbe@0
|
857 struct sockaddr_in6 addr;
|
|
jbe@0
|
858 socklen_t addr_len = sizeof(struct sockaddr_in6);
|
|
jbe@88
|
859 if (getsockname(fd, (struct sockaddr *)&addr, &addr_len)) {
|
|
jbe@0
|
860 moonbr_child_log_errno("Could not get local IP address/port");
|
|
jbe@0
|
861 } else {
|
|
jbe@0
|
862 lua_pushlstring(L, (char *)addr.sin6_addr.s6_addr, 16);
|
|
jbe@0
|
863 lua_setfield(L, -2, "local_ip6");
|
|
jbe@0
|
864 lua_pushinteger(L, ntohs(addr.sin6_port));
|
|
jbe@0
|
865 lua_setfield(L, -2, "local_tcpport");
|
|
jbe@0
|
866 }
|
|
jbe@88
|
867 if (getpeername(fd, (struct sockaddr *)&addr, &addr_len)) {
|
|
jbe@0
|
868 moonbr_child_log_errno("Could not get remote IP address/port");
|
|
jbe@0
|
869 } else {
|
|
jbe@0
|
870 lua_pushlstring(L, (char *)addr.sin6_addr.s6_addr, 16);
|
|
jbe@0
|
871 lua_setfield(L, -2, "remote_ip6");
|
|
jbe@0
|
872 lua_pushinteger(L, ntohs(addr.sin6_port));
|
|
jbe@0
|
873 lua_setfield(L, -2, "remote_tcpport");
|
|
jbe@0
|
874 }
|
|
jbe@0
|
875 } else if (listener->proto == MOONBR_PROTO_TCP4) {
|
|
jbe@0
|
876 struct sockaddr_in addr;
|
|
jbe@0
|
877 socklen_t addr_len = sizeof(struct sockaddr_in);
|
|
jbe@88
|
878 if (getsockname(fd, (struct sockaddr *)&addr, &addr_len)) {
|
|
jbe@0
|
879 moonbr_child_log_errno("Could not get local IP address/port");
|
|
jbe@0
|
880 } else {
|
|
jbe@0
|
881 lua_pushlstring(L, (char *)&addr.sin_addr.s_addr, 4);
|
|
jbe@0
|
882 lua_setfield(L, -2, "local_ip4");
|
|
jbe@0
|
883 lua_pushinteger(L, ntohs(addr.sin_port));
|
|
jbe@0
|
884 lua_setfield(L, -2, "local_tcpport");
|
|
jbe@0
|
885 }
|
|
jbe@88
|
886 if (getpeername(fd, (struct sockaddr *)&addr, &addr_len)) {
|
|
jbe@0
|
887 moonbr_child_log_errno("Could not get remote IP address/port");
|
|
jbe@0
|
888 } else {
|
|
jbe@0
|
889 lua_pushlstring(L, (char *)&addr.sin_addr.s_addr, 4);
|
|
jbe@0
|
890 lua_setfield(L, -2, "remote_ip4");
|
|
jbe@0
|
891 lua_pushinteger(L, ntohs(addr.sin_port));
|
|
jbe@0
|
892 lua_setfield(L, -2, "remote_tcpport");
|
|
jbe@0
|
893 }
|
|
jbe@0
|
894 }
|
|
jbe@0
|
895 }
|
|
jbe@0
|
896 if (lua_pcall(L, 1, 1, 1)) {
|
|
jbe@0
|
897 fprintf(stderr, "Error in \"connect\" function: %s\n", lua_tostring(L, -1));
|
|
jbe@0
|
898 exit(1);
|
|
jbe@0
|
899 }
|
|
jbe@88
|
900 if (fd) moonbr_io_closehandle(L, -2, -1); /* attemt clean close */
|
|
jbe@0
|
901 if (lua_type(L, -1) != LUA_TBOOLEAN || !lua_toboolean(L, -1)) break;
|
|
jbe@0
|
902 #ifdef MOONBR_LUA_PANIC_BUG_WORKAROUND
|
|
jbe@0
|
903 lua_settop(L, 2);
|
|
jbe@0
|
904 #else
|
|
jbe@0
|
905 lua_settop(L, 1);
|
|
jbe@0
|
906 #endif
|
|
jbe@0
|
907 }
|
|
jbe@0
|
908 controlmsg = MOONBR_STATUS_GOODBYE;
|
|
jbe@0
|
909 if (write(MOONBR_FD_CONTROL, &controlmsg, 1) <= 0) {
|
|
jbe@0
|
910 moonbr_child_log_errno_fatal("Error while sending goodbye message to parent process");
|
|
jbe@0
|
911 }
|
|
jbe@0
|
912 if (close(MOONBR_FD_CONTROL) && errno != EINTR) {
|
|
jbe@0
|
913 moonbr_child_log_errno("Error while closing control socket");
|
|
jbe@0
|
914 }
|
|
jbe@0
|
915 lua_rawgetp(L, LUA_REGISTRYINDEX, moonbr_luakey_finish_func(pool));
|
|
jbe@0
|
916 if (lua_isnil(L, -1)) lua_pop(L, 1);
|
|
jbe@0
|
917 else if (lua_pcall(L, 0, 0, 1)) {
|
|
jbe@0
|
918 fprintf(stderr, "Error in \"finish\" function: %s\n", lua_tostring(L, -1));
|
|
jbe@0
|
919 exit(1);
|
|
jbe@0
|
920 }
|
|
jbe@0
|
921 lua_close(L);
|
|
jbe@0
|
922 exit(0);
|
|
jbe@0
|
923 }
|
|
jbe@0
|
924
|
|
jbe@0
|
925
|
|
jbe@0
|
926 /*** Functions to spawn child process ***/
|
|
jbe@0
|
927
|
|
jbe@0
|
928 /* Helper function to send an error message to a file descriptor (not needing a file stream) */
|
|
jbe@0
|
929 static void moonbr_child_emergency_print(int fd, char *message) {
|
|
jbe@0
|
930 size_t len = strlen(message);
|
|
jbe@0
|
931 ssize_t written;
|
|
jbe@0
|
932 while (len) {
|
|
jbe@0
|
933 written = write(fd, message, len);
|
|
jbe@0
|
934 if (written > 0) {
|
|
jbe@0
|
935 message += written;
|
|
jbe@0
|
936 len -= written;
|
|
jbe@0
|
937 } else {
|
|
jbe@0
|
938 if (written != -1 || errno != EINTR) break;
|
|
jbe@0
|
939 }
|
|
jbe@0
|
940 }
|
|
jbe@0
|
941 }
|
|
jbe@0
|
942
|
|
jbe@0
|
943 /* Helper function to send an error message plus a text for errno to a file descriptor and terminate the process */
|
|
jbe@0
|
944 static void moonbr_child_emergency_error(int fd, char *message) {
|
|
jbe@0
|
945 int errno2 = errno;
|
|
jbe@0
|
946 moonbr_child_emergency_print(fd, message);
|
|
jbe@0
|
947 moonbr_child_emergency_print(fd, ": ");
|
|
jbe@0
|
948 moonbr_child_emergency_print(fd, strerror(errno2));
|
|
jbe@0
|
949 moonbr_child_emergency_print(fd, "\n");
|
|
jbe@0
|
950 exit(1);
|
|
jbe@0
|
951 }
|
|
jbe@0
|
952
|
|
jbe@0
|
953 /* Creates a child process and (in case of success) registers it in the 'struct moonbr_pool' structure */
|
|
jbe@0
|
954 static int moonbr_create_worker(struct moonbr_pool *pool, lua_State *L) {
|
|
jbe@0
|
955 struct moonbr_worker *worker;
|
|
jbe@0
|
956 worker = calloc(1, sizeof(struct moonbr_worker));
|
|
jbe@0
|
957 if (!worker) {
|
|
jbe@0
|
958 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
959 return -1;
|
|
jbe@0
|
960 }
|
|
jbe@0
|
961 worker->pool = pool;
|
|
jbe@0
|
962 {
|
|
jbe@0
|
963 int controlfds[2];
|
|
jbe@0
|
964 int errorfds[2];
|
|
jbe@0
|
965 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, controlfds)) {
|
|
jbe@0
|
966 moonbr_log(LOG_ERR, "Could not create control socket pair for communcation with child process: %s", strerror(errno));
|
|
jbe@0
|
967 free(worker);
|
|
jbe@0
|
968 return -1;
|
|
jbe@0
|
969 }
|
|
jbe@0
|
970 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, errorfds)) {
|
|
jbe@0
|
971 moonbr_log(LOG_ERR, "Could not create socket pair to redirect stderr of child process: %s", strerror(errno));
|
|
jbe@0
|
972 close(controlfds[0]);
|
|
jbe@0
|
973 close(controlfds[1]);
|
|
jbe@0
|
974 free(worker);
|
|
jbe@0
|
975 return -1;
|
|
jbe@0
|
976 }
|
|
jbe@0
|
977 if (moonbr_logfile && fflush(moonbr_logfile)) {
|
|
jbe@0
|
978 moonbr_log(LOG_CRIT, "Could not flush log file prior to forking: %s", strerror(errno));
|
|
jbe@0
|
979 moonbr_terminate_error();
|
|
jbe@0
|
980 }
|
|
jbe@0
|
981 worker->pid = fork();
|
|
jbe@0
|
982 if (worker->pid == -1) {
|
|
jbe@0
|
983 moonbr_log(LOG_ERR, "Could not fork: %s", strerror(errno));
|
|
jbe@0
|
984 close(controlfds[0]);
|
|
jbe@0
|
985 close(controlfds[1]);
|
|
jbe@0
|
986 close(errorfds[0]);
|
|
jbe@0
|
987 close(errorfds[1]);
|
|
jbe@0
|
988 free(worker);
|
|
jbe@0
|
989 return -1;
|
|
jbe@0
|
990 } else if (!worker->pid) {
|
|
jbe@0
|
991 moonbr_pstate = MOONBR_PSTATE_FORKED;
|
|
jbe@0
|
992 #ifdef MOONBR_LUA_PANIC_BUG_WORKAROUND
|
|
jbe@0
|
993 lua_pushliteral(L, "Failed to pass error message due to bug in Lua panic handler (hint: not enough memory?)");
|
|
jbe@0
|
994 #endif
|
|
jbe@0
|
995 moonbr_memory_limit = pool->memory_limit;
|
|
jbe@0
|
996 if (moonbr_pidfh && pidfile_close(moonbr_pidfh)) {
|
|
jbe@0
|
997 moonbr_child_emergency_error(errorfds[1], "Could not close PID file in forked child process");
|
|
jbe@0
|
998 }
|
|
jbe@0
|
999 if (moonbr_logfile && moonbr_logfile != stderr && fclose(moonbr_logfile)) {
|
|
jbe@0
|
1000 moonbr_child_emergency_error(errorfds[1], "Could not close log file in forked child process");
|
|
jbe@0
|
1001 }
|
|
jbe@0
|
1002 if (dup2(errorfds[1], MOONBR_FD_STDERR) == -1) {
|
|
jbe@0
|
1003 moonbr_child_emergency_error(errorfds[1], "Could not duplicate socket to stderr file descriptor");
|
|
jbe@0
|
1004 }
|
|
jbe@0
|
1005 if (dup2(controlfds[1], MOONBR_FD_CONTROL) == -1) {
|
|
jbe@0
|
1006 moonbr_child_emergency_error(errorfds[1], "Could not duplicate control socket");
|
|
jbe@0
|
1007 }
|
|
jbe@0
|
1008 closefrom(MOONBR_FD_END);
|
|
jbe@0
|
1009 moonbr_child_run(pool, L);
|
|
jbe@0
|
1010 }
|
|
jbe@0
|
1011 if (moonbr_stat) {
|
|
jbe@0
|
1012 moonbr_log(LOG_INFO, "Created new worker in pool #%i with PID %i", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1013 }
|
|
jbe@0
|
1014 worker->controlfd = controlfds[0];
|
|
jbe@0
|
1015 worker->errorfd = errorfds[0];
|
|
jbe@0
|
1016 if (close(controlfds[1]) && errno != EINTR) {
|
|
jbe@0
|
1017 moonbr_log(LOG_CRIT, "Could not close opposite end of control file descriptor after forking");
|
|
jbe@0
|
1018 moonbr_terminate_error();
|
|
jbe@0
|
1019 }
|
|
jbe@0
|
1020 if (close(errorfds[1]) && errno != EINTR) {
|
|
jbe@0
|
1021 moonbr_log(LOG_CRIT, "Could not close opposite end of control file descriptor after forking");
|
|
jbe@0
|
1022 moonbr_terminate_error();
|
|
jbe@0
|
1023 }
|
|
jbe@0
|
1024 }
|
|
jbe@0
|
1025 worker->prev_worker = pool->last_worker;
|
|
jbe@0
|
1026 if (worker->prev_worker) worker->prev_worker->next_worker = worker;
|
|
jbe@0
|
1027 else pool->first_worker = worker;
|
|
jbe@0
|
1028 pool->last_worker = worker;
|
|
jbe@0
|
1029 pool->unassigned_worker_count++;
|
|
jbe@0
|
1030 pool->total_worker_count++;
|
|
jbe@0
|
1031 pool->worker_count_stat = 1;
|
|
jbe@0
|
1032 moonbr_poll_refresh_needed = 1;
|
|
jbe@0
|
1033 return 0; /* return zero only in case of success */
|
|
jbe@0
|
1034 }
|
|
jbe@0
|
1035
|
|
jbe@0
|
1036
|
|
jbe@0
|
1037 /*** Functions to handle previously created 'struct moonbr_worker' structures ***/
|
|
jbe@0
|
1038
|
|
jbe@0
|
1039 #define moonbr_try_destroy_worker_stat(str, field) \
|
|
jbe@0
|
1040 moonbr_log(LOG_INFO, "Resource usage in pool #%i for PID %i: " str " %li", worker->pool->poolnum, (int)worker->pid, (long)childusage.field);
|
|
jbe@0
|
1041
|
|
jbe@0
|
1042 /* Destroys a worker structure if socket connections have been closed and child process has terminated */
|
|
jbe@0
|
1043 static int moonbr_try_destroy_worker(struct moonbr_worker *worker) {
|
|
jbe@0
|
1044 if (worker->controlfd != -1 || worker->errorfd != -1) return MOONBR_DESTROY_NONE;
|
|
jbe@0
|
1045 {
|
|
jbe@0
|
1046 int childstatus;
|
|
jbe@0
|
1047 struct rusage childusage;
|
|
jbe@0
|
1048 {
|
|
jbe@0
|
1049 pid_t waitedpid;
|
|
jbe@0
|
1050 while (
|
|
jbe@0
|
1051 (waitedpid = wait4(worker->pid, &childstatus, WNOHANG, &childusage)) == -1
|
|
jbe@0
|
1052 ) {
|
|
jbe@0
|
1053 if (errno != EINTR) {
|
|
jbe@0
|
1054 moonbr_log(LOG_CRIT, "Error in wait4() call: %s", strerror(errno));
|
|
jbe@0
|
1055 moonbr_terminate_error();
|
|
jbe@0
|
1056 }
|
|
jbe@0
|
1057 }
|
|
jbe@0
|
1058 if (!waitedpid) return 0; /* return 0 if worker couldn't be destroyed */
|
|
jbe@0
|
1059 if (waitedpid != worker->pid) {
|
|
jbe@0
|
1060 moonbr_log(LOG_CRIT, "Wrong PID returned by wait4() call");
|
|
jbe@0
|
1061 moonbr_terminate_error();
|
|
jbe@0
|
1062 }
|
|
jbe@0
|
1063 }
|
|
jbe@0
|
1064 if (WIFEXITED(childstatus)) {
|
|
jbe@0
|
1065 if (WEXITSTATUS(childstatus) || moonbr_stat) {
|
|
jbe@0
|
1066 moonbr_log(
|
|
jbe@0
|
1067 WEXITSTATUS(childstatus) ? LOG_WARNING : LOG_INFO,
|
|
jbe@0
|
1068 "Child process in pool #%i with PID %i returned with exit code %i", worker->pool->poolnum, (int)worker->pid, WEXITSTATUS(childstatus)
|
|
jbe@0
|
1069 );
|
|
jbe@0
|
1070 }
|
|
jbe@0
|
1071 } else if (WIFSIGNALED(childstatus)) {
|
|
jbe@0
|
1072 if (WCOREDUMP(childstatus)) {
|
|
jbe@0
|
1073 moonbr_log(LOG_ERR, "Child process in pool #%i with PID %i died from signal %i (core dump was created)", worker->pool->poolnum, (int)worker->pid, WTERMSIG(childstatus));
|
|
jbe@0
|
1074 } else if (WTERMSIG(childstatus) == SIGALRM) {
|
|
jbe@0
|
1075 moonbr_log(LOG_WARNING, "Child process in pool #%i with PID %i exited prematurely due to timeout", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1076 } else {
|
|
jbe@0
|
1077 moonbr_log(LOG_ERR, "Child process in pool #%i with PID %i died from signal %i", worker->pool->poolnum, (int)worker->pid, WTERMSIG(childstatus));
|
|
jbe@0
|
1078 }
|
|
jbe@0
|
1079 } else {
|
|
jbe@0
|
1080 moonbr_log(LOG_CRIT, "Illegal exit status from child process in pool #%i with PID %i", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1081 moonbr_terminate_error();
|
|
jbe@0
|
1082 }
|
|
jbe@0
|
1083 if (moonbr_stat) {
|
|
jbe@0
|
1084 moonbr_log(LOG_INFO, "Resource usage in pool #%i for PID %i: user time %s", worker->pool->poolnum, (int)worker->pid, moonbr_format_timeval(&childusage.ru_utime));
|
|
jbe@0
|
1085 moonbr_log(LOG_INFO, "Resource usage in pool #%i for PID %i: system time %s", worker->pool->poolnum, (int)worker->pid, moonbr_format_timeval(&childusage.ru_stime));
|
|
jbe@0
|
1086 moonbr_try_destroy_worker_stat("max resident set size", ru_maxrss);
|
|
jbe@0
|
1087 moonbr_try_destroy_worker_stat("integral shared memory size", ru_ixrss);
|
|
jbe@0
|
1088 moonbr_try_destroy_worker_stat("integral unshared data", ru_idrss);
|
|
jbe@0
|
1089 moonbr_try_destroy_worker_stat("integral unshared stack", ru_isrss);
|
|
jbe@0
|
1090 moonbr_try_destroy_worker_stat("page replaims", ru_minflt);
|
|
jbe@0
|
1091 moonbr_try_destroy_worker_stat("page faults", ru_majflt);
|
|
jbe@0
|
1092 moonbr_try_destroy_worker_stat("swaps", ru_nswap);
|
|
jbe@0
|
1093 moonbr_try_destroy_worker_stat("block input operations", ru_inblock);
|
|
jbe@0
|
1094 moonbr_try_destroy_worker_stat("block output operations", ru_oublock);
|
|
jbe@0
|
1095 moonbr_try_destroy_worker_stat("messages sent", ru_msgsnd);
|
|
jbe@0
|
1096 moonbr_try_destroy_worker_stat("messages received", ru_msgrcv);
|
|
jbe@0
|
1097 moonbr_try_destroy_worker_stat("signals received", ru_nsignals);
|
|
jbe@0
|
1098 moonbr_try_destroy_worker_stat("voluntary context switches", ru_nvcsw);
|
|
jbe@0
|
1099 moonbr_try_destroy_worker_stat("involuntary context switches", ru_nivcsw);
|
|
jbe@0
|
1100 }
|
|
jbe@0
|
1101 }
|
|
jbe@0
|
1102 {
|
|
jbe@0
|
1103 int retval = (
|
|
jbe@0
|
1104 (worker->idle || worker->assigned) ?
|
|
jbe@0
|
1105 MOONBR_DESTROY_IDLE_OR_ASSIGNED :
|
|
jbe@0
|
1106 MOONBR_DESTROY_PREPARE
|
|
jbe@0
|
1107 );
|
|
jbe@0
|
1108 if (worker->prev_worker) worker->prev_worker->next_worker = worker->next_worker;
|
|
jbe@0
|
1109 else worker->pool->first_worker = worker->next_worker;
|
|
jbe@0
|
1110 if (worker->next_worker) worker->next_worker->prev_worker = worker->prev_worker;
|
|
jbe@0
|
1111 else worker->pool->last_worker = worker->prev_worker;
|
|
jbe@0
|
1112 if (worker->idle) {
|
|
jbe@0
|
1113 if (worker->prev_idle_worker) worker->prev_idle_worker->next_idle_worker = worker->next_idle_worker;
|
|
jbe@0
|
1114 else worker->pool->first_idle_worker = worker->next_idle_worker;
|
|
jbe@0
|
1115 if (worker->next_idle_worker) worker->next_idle_worker->prev_idle_worker = worker->prev_idle_worker;
|
|
jbe@0
|
1116 else worker->pool->last_idle_worker = worker->prev_idle_worker;
|
|
jbe@0
|
1117 worker->pool->idle_worker_count--;
|
|
jbe@0
|
1118 }
|
|
jbe@0
|
1119 if (!worker->assigned) worker->pool->unassigned_worker_count--;
|
|
jbe@0
|
1120 worker->pool->total_worker_count--;
|
|
jbe@0
|
1121 worker->pool->worker_count_stat = 1;
|
|
jbe@0
|
1122 if (worker->errorlinebuf) free(worker->errorlinebuf);
|
|
jbe@0
|
1123 free(worker);
|
|
jbe@0
|
1124 return retval;
|
|
jbe@0
|
1125 }
|
|
jbe@0
|
1126 }
|
|
jbe@0
|
1127
|
|
jbe@0
|
1128 /* Marks a worker as idle and stores it in a queue, optionally setting 'idle_expiration' value */
|
|
jbe@0
|
1129 static void moonbr_add_idle_worker(struct moonbr_worker *worker) {
|
|
jbe@0
|
1130 worker->prev_idle_worker = worker->pool->last_idle_worker;
|
|
jbe@0
|
1131 if (worker->prev_idle_worker) worker->prev_idle_worker->next_idle_worker = worker;
|
|
jbe@0
|
1132 else worker->pool->first_idle_worker = worker;
|
|
jbe@0
|
1133 worker->pool->last_idle_worker = worker;
|
|
jbe@0
|
1134 worker->idle = 1;
|
|
jbe@0
|
1135 worker->pool->idle_worker_count++;
|
|
jbe@0
|
1136 if (worker->assigned) {
|
|
jbe@0
|
1137 worker->assigned = 0;
|
|
jbe@0
|
1138 worker->pool->unassigned_worker_count++;
|
|
jbe@0
|
1139 }
|
|
jbe@0
|
1140 worker->pool->worker_count_stat = 1;
|
|
jbe@0
|
1141 if (timerisset(&worker->pool->idle_timeout)) {
|
|
jbe@0
|
1142 struct timeval now;
|
|
jbe@0
|
1143 moonbr_now(&now);
|
|
jbe@0
|
1144 timeradd(&now, &worker->pool->idle_timeout, &worker->idle_expiration);
|
|
jbe@0
|
1145 }
|
|
jbe@0
|
1146 }
|
|
jbe@0
|
1147
|
|
jbe@0
|
1148 /* Pops a worker from the queue of idle workers (idle queue must not be empty) */
|
|
jbe@0
|
1149 static struct moonbr_worker *moonbr_pop_idle_worker(struct moonbr_pool *pool) {
|
|
jbe@0
|
1150 struct moonbr_worker *worker;
|
|
jbe@0
|
1151 worker = pool->first_idle_worker;
|
|
jbe@0
|
1152 pool->first_idle_worker = worker->next_idle_worker;
|
|
jbe@0
|
1153 if (pool->first_idle_worker) pool->first_idle_worker->prev_idle_worker = NULL;
|
|
jbe@0
|
1154 else pool->last_idle_worker = NULL;
|
|
jbe@0
|
1155 worker->next_idle_worker = NULL;
|
|
jbe@0
|
1156 worker->idle = 0;
|
|
jbe@0
|
1157 worker->pool->idle_worker_count--;
|
|
jbe@0
|
1158 worker->assigned = 1;
|
|
jbe@0
|
1159 worker->pool->unassigned_worker_count--;
|
|
jbe@0
|
1160 worker->pool->worker_count_stat = 1;
|
|
jbe@0
|
1161 return worker;
|
|
jbe@0
|
1162 }
|
|
jbe@0
|
1163
|
|
jbe@0
|
1164
|
|
jbe@0
|
1165 /*** Functions for queues of 'struct moonbr_listener' ***/
|
|
jbe@0
|
1166
|
|
jbe@0
|
1167 /* Appends a 'struct moonbr_listener' to the queue of idle listeners and registers it for poll() */
|
|
jbe@0
|
1168 static void moonbr_add_idle_listener(struct moonbr_listener *listener) {
|
|
jbe@0
|
1169 listener->prev_listener = listener->pool->last_idle_listener;
|
|
jbe@0
|
1170 if (listener->prev_listener) listener->prev_listener->next_listener = listener;
|
|
jbe@0
|
1171 else listener->pool->first_idle_listener = listener;
|
|
jbe@0
|
1172 listener->pool->last_idle_listener = listener;
|
|
jbe@0
|
1173 if (listener->pollidx != -1) moonbr_poll_fds[listener->pollidx].events |= POLLIN;
|
|
jbe@0
|
1174 }
|
|
jbe@0
|
1175
|
|
jbe@0
|
1176 /* Removes a 'struct moonbr_listener' from the queue of idle listeners and unregisters it from poll() */
|
|
jbe@0
|
1177 static void moonbr_remove_idle_listener(struct moonbr_listener *listener) {
|
|
jbe@0
|
1178 if (listener->prev_listener) listener->prev_listener->next_listener = listener->next_listener;
|
|
jbe@0
|
1179 else listener->pool->first_idle_listener = listener->next_listener;
|
|
jbe@0
|
1180 if (listener->next_listener) listener->next_listener->prev_listener = listener->prev_listener;
|
|
jbe@0
|
1181 else listener->pool->last_idle_listener = listener->prev_listener;
|
|
jbe@0
|
1182 listener->prev_listener = NULL;
|
|
jbe@0
|
1183 listener->next_listener = NULL;
|
|
jbe@0
|
1184 if (listener->pollidx != -1) moonbr_poll_fds[listener->pollidx].events &= ~POLLIN;
|
|
jbe@0
|
1185 }
|
|
jbe@0
|
1186
|
|
jbe@0
|
1187 /* Adds a listener to the queue of connected listeners (i.e. waiting to have their incoming connection accepted) */
|
|
jbe@0
|
1188 static void moonbr_add_connected_listener(struct moonbr_listener *listener) {
|
|
jbe@0
|
1189 listener->prev_listener = listener->pool->last_connected_listener;
|
|
jbe@0
|
1190 if (listener->prev_listener) listener->prev_listener->next_listener = listener;
|
|
jbe@0
|
1191 else listener->pool->first_connected_listener = listener;
|
|
jbe@0
|
1192 listener->pool->last_connected_listener = listener;
|
|
jbe@0
|
1193 }
|
|
jbe@0
|
1194
|
|
jbe@0
|
1195 /* Removes and returns the first connected listener in the queue */
|
|
jbe@0
|
1196 static struct moonbr_listener *moonbr_pop_connected_listener(struct moonbr_pool *pool) {
|
|
jbe@0
|
1197 struct moonbr_listener *listener = pool->first_connected_listener;
|
|
jbe@0
|
1198 listener->pool->first_connected_listener = listener->next_listener;
|
|
jbe@0
|
1199 if (listener->pool->first_connected_listener) listener->pool->first_connected_listener->prev_listener = NULL;
|
|
jbe@0
|
1200 else listener->pool->last_connected_listener = NULL;
|
|
jbe@0
|
1201 listener->next_listener = NULL;
|
|
jbe@0
|
1202 return listener;
|
|
jbe@0
|
1203 }
|
|
jbe@0
|
1204
|
|
jbe@0
|
1205
|
|
jbe@0
|
1206 /*** Functions to handle polling ***/
|
|
jbe@0
|
1207
|
|
jbe@0
|
1208 /* Returns an index to a new initialized entry in moonbr_poll_fds[] */
|
|
jbe@0
|
1209 int moonbr_poll_fds_nextindex() {
|
|
jbe@0
|
1210 if (moonbr_poll_fds_count >= moonbr_poll_fds_bufsize) {
|
|
jbe@0
|
1211 if (moonbr_poll_fds_bufsize) moonbr_poll_fds_bufsize *= 2;
|
|
jbe@0
|
1212 else moonbr_poll_fds_bufsize = 1;
|
|
jbe@0
|
1213 moonbr_poll_fds = realloc(
|
|
jbe@0
|
1214 moonbr_poll_fds, moonbr_poll_fds_bufsize * sizeof(struct pollfd)
|
|
jbe@0
|
1215 );
|
|
jbe@0
|
1216 if (!moonbr_poll_fds) {
|
|
jbe@0
|
1217 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
1218 moonbr_terminate_error();
|
|
jbe@0
|
1219 }
|
|
jbe@0
|
1220 }
|
|
jbe@0
|
1221 moonbr_poll_fds[moonbr_poll_fds_count] = (struct pollfd){0, };
|
|
jbe@0
|
1222 return moonbr_poll_fds_count++;
|
|
jbe@0
|
1223 }
|
|
jbe@0
|
1224
|
|
jbe@0
|
1225 /* Returns an index to a new initialized entry in moonbr_poll_workers[] */
|
|
jbe@0
|
1226 int moonbr_poll_workers_nextindex() {
|
|
jbe@0
|
1227 if (moonbr_poll_worker_count >= moonbr_poll_workers_bufsize) {
|
|
jbe@0
|
1228 if (moonbr_poll_workers_bufsize) moonbr_poll_workers_bufsize *= 2;
|
|
jbe@0
|
1229 else moonbr_poll_workers_bufsize = 1;
|
|
jbe@0
|
1230 moonbr_poll_workers = realloc(
|
|
jbe@0
|
1231 moonbr_poll_workers, moonbr_poll_workers_bufsize * sizeof(struct moonbr_poll_worker)
|
|
jbe@0
|
1232 );
|
|
jbe@0
|
1233 if (!moonbr_poll_workers) {
|
|
jbe@0
|
1234 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
1235 moonbr_terminate_error();
|
|
jbe@0
|
1236 }
|
|
jbe@0
|
1237 }
|
|
jbe@0
|
1238 moonbr_poll_workers[moonbr_poll_worker_count] = (struct moonbr_poll_worker){0, };
|
|
jbe@0
|
1239 return moonbr_poll_worker_count++;
|
|
jbe@0
|
1240 }
|
|
jbe@0
|
1241
|
|
jbe@0
|
1242 /* Queues all listeners as idle, and initializes static part of moonbr_poll_fds[], which is passed to poll() */
|
|
jbe@0
|
1243 static void moonbr_poll_init() {
|
|
jbe@0
|
1244 if (socketpair(
|
|
jbe@0
|
1245 PF_LOCAL,
|
|
jbe@0
|
1246 SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
|
|
jbe@0
|
1247 0,
|
|
jbe@0
|
1248 moonbr_poll_signalfds
|
|
jbe@0
|
1249 )) {
|
|
jbe@0
|
1250 moonbr_log(LOG_CRIT, "Could not create socket pair for signal delivery during polling: %s", strerror(errno));
|
|
jbe@0
|
1251 moonbr_terminate_error();
|
|
jbe@0
|
1252 }
|
|
jbe@0
|
1253 {
|
|
jbe@0
|
1254 int j = moonbr_poll_fds_nextindex();
|
|
jbe@0
|
1255 struct pollfd *pollfd = &moonbr_poll_fds[j];
|
|
jbe@0
|
1256 pollfd->fd = moonbr_poll_signalfd_read;
|
|
jbe@0
|
1257 pollfd->events = POLLIN;
|
|
jbe@0
|
1258 }
|
|
jbe@0
|
1259 {
|
|
jbe@0
|
1260 struct moonbr_pool *pool;
|
|
jbe@0
|
1261 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
1262 int i;
|
|
jbe@0
|
1263 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
1264 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
1265 if (listener->listenfd != -1) {
|
|
jbe@0
|
1266 int j = moonbr_poll_fds_nextindex();
|
|
jbe@0
|
1267 listener->pollidx = j;
|
|
jbe@0
|
1268 moonbr_poll_fds[j].fd = listener->listenfd;
|
|
jbe@0
|
1269 }
|
|
jbe@0
|
1270 moonbr_add_idle_listener(listener);
|
|
jbe@0
|
1271 }
|
|
jbe@0
|
1272 }
|
|
jbe@0
|
1273 }
|
|
jbe@0
|
1274 moonbr_poll_fds_static_count = moonbr_poll_fds_count; /* remember size of static part of array */
|
|
jbe@0
|
1275 }
|
|
jbe@0
|
1276
|
|
jbe@0
|
1277 /* Disables polling of all listeners (required for clean shutdown) */
|
|
jbe@0
|
1278 static void moonbr_poll_shutdown() {
|
|
jbe@0
|
1279 int i;
|
|
jbe@0
|
1280 for (i=1; i<moonbr_poll_fds_static_count; i++) {
|
|
jbe@0
|
1281 moonbr_poll_fds[i].fd = -1;
|
|
jbe@0
|
1282 }
|
|
jbe@0
|
1283 }
|
|
jbe@0
|
1284
|
|
jbe@0
|
1285 /* (Re)builds dynamic part of moonbr_poll_fds[] array, and (re)builds moonbr_poll_workers[] array */
|
|
jbe@0
|
1286 static void moonbr_poll_refresh() {
|
|
jbe@0
|
1287 moonbr_poll_refresh_needed = 0;
|
|
jbe@0
|
1288 moonbr_poll_fds_count = moonbr_poll_fds_static_count;
|
|
jbe@0
|
1289 moonbr_poll_worker_count = 0;
|
|
jbe@0
|
1290 {
|
|
jbe@0
|
1291 struct moonbr_pool *pool;
|
|
jbe@0
|
1292 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
1293 struct moonbr_worker *worker;
|
|
jbe@0
|
1294 for (worker=pool->first_worker; worker; worker=worker->next_worker) {
|
|
jbe@0
|
1295 if (worker->controlfd != -1) {
|
|
jbe@0
|
1296 int j = moonbr_poll_fds_nextindex();
|
|
jbe@0
|
1297 int k = moonbr_poll_workers_nextindex();
|
|
jbe@0
|
1298 struct pollfd *pollfd = &moonbr_poll_fds[j];
|
|
jbe@0
|
1299 struct moonbr_poll_worker *poll_worker = &moonbr_poll_workers[k];
|
|
jbe@0
|
1300 pollfd->fd = worker->controlfd;
|
|
jbe@0
|
1301 pollfd->events = POLLIN;
|
|
jbe@0
|
1302 poll_worker->channel = MOONBR_POLL_WORKER_CONTROLCHANNEL;
|
|
jbe@0
|
1303 poll_worker->worker = worker;
|
|
jbe@0
|
1304 }
|
|
jbe@0
|
1305 if (worker->errorfd != -1) {
|
|
jbe@0
|
1306 int j = moonbr_poll_fds_nextindex();
|
|
jbe@0
|
1307 int k = moonbr_poll_workers_nextindex();
|
|
jbe@0
|
1308 struct pollfd *pollfd = &moonbr_poll_fds[j];
|
|
jbe@0
|
1309 struct moonbr_poll_worker *poll_worker = &moonbr_poll_workers[k];
|
|
jbe@0
|
1310 pollfd->fd = worker->errorfd;
|
|
jbe@0
|
1311 pollfd->events = POLLIN;
|
|
jbe@0
|
1312 poll_worker->channel = MOONBR_POLL_WORKER_ERRORCHANNEL;
|
|
jbe@0
|
1313 poll_worker->worker = worker;
|
|
jbe@0
|
1314 }
|
|
jbe@0
|
1315 }
|
|
jbe@0
|
1316 }
|
|
jbe@0
|
1317 }
|
|
jbe@0
|
1318 }
|
|
jbe@0
|
1319
|
|
jbe@0
|
1320 /* resets socket and 'revents' field of moonbr_poll_fds[] for signal delivery just before poll() is called */
|
|
jbe@0
|
1321 static void moonbr_poll_reset_signal() {
|
|
jbe@0
|
1322 ssize_t readcount;
|
|
jbe@0
|
1323 char buf[1];
|
|
jbe@0
|
1324 moonbr_poll_fds[0].revents = 0;
|
|
jbe@0
|
1325 while ((readcount = read(moonbr_poll_signalfd_read, buf, 1)) < 0) {
|
|
jbe@0
|
1326 if (errno == EAGAIN) break;
|
|
jbe@0
|
1327 if (errno != EINTR) {
|
|
jbe@0
|
1328 moonbr_log(LOG_CRIT, "Error while reading from signal delivery socket: %s", strerror(errno));
|
|
jbe@0
|
1329 moonbr_terminate_error();
|
|
jbe@0
|
1330 }
|
|
jbe@0
|
1331 }
|
|
jbe@0
|
1332 if (!readcount) {
|
|
jbe@0
|
1333 moonbr_log(LOG_CRIT, "Unexpected EOF when reading from signal delivery socket: %s", strerror(errno));
|
|
jbe@0
|
1334 moonbr_terminate_error();
|
|
jbe@0
|
1335 }
|
|
jbe@0
|
1336 }
|
|
jbe@0
|
1337
|
|
jbe@0
|
1338
|
|
jbe@0
|
1339 /*** Shutdown initiation ***/
|
|
jbe@0
|
1340
|
|
jbe@0
|
1341 /* Sets global variable 'moonbr_shutdown_in_progress', closes listeners, and demands worker termination */
|
|
jbe@0
|
1342 static void moonbr_initiate_shutdown() {
|
|
jbe@0
|
1343 struct moonbr_pool *pool;
|
|
jbe@0
|
1344 int i;
|
|
jbe@0
|
1345 if (moonbr_shutdown_in_progress) {
|
|
jbe@0
|
1346 moonbr_log(LOG_NOTICE, "Shutdown already in progress");
|
|
jbe@0
|
1347 return;
|
|
jbe@0
|
1348 }
|
|
jbe@0
|
1349 moonbr_shutdown_in_progress = 1;
|
|
jbe@0
|
1350 moonbr_log(LOG_NOTICE, "Initiate shutdown");
|
|
jbe@0
|
1351 for (pool = moonbr_first_pool; pool; pool = pool->next_pool) {
|
|
jbe@0
|
1352 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
1353 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
1354 if (listener->listenfd != -1) {
|
|
jbe@0
|
1355 if (close(listener->listenfd) && errno != EINTR) {
|
|
jbe@0
|
1356 moonbr_log(LOG_CRIT, "Could not close listening socket: %s", strerror(errno));
|
|
jbe@0
|
1357 moonbr_terminate_error();
|
|
jbe@0
|
1358 }
|
|
jbe@0
|
1359 }
|
|
jbe@0
|
1360 }
|
|
jbe@0
|
1361 pool->pre_fork = 0;
|
|
jbe@0
|
1362 pool->min_fork = 0;
|
|
jbe@0
|
1363 pool->max_fork = 0;
|
|
jbe@0
|
1364 timerclear(&pool->exit_delay);
|
|
jbe@0
|
1365 }
|
|
jbe@0
|
1366 moonbr_poll_shutdown(); /* avoids loops due to error condition when polling closed listeners */
|
|
jbe@0
|
1367 }
|
|
jbe@0
|
1368
|
|
jbe@0
|
1369
|
|
jbe@0
|
1370 /*** Functions to communicate with child processes ***/
|
|
jbe@0
|
1371
|
|
jbe@0
|
1372 /* Tells child process to terminate */
|
|
jbe@0
|
1373 static void moonbr_terminate_idle_worker(struct moonbr_worker *worker) {
|
|
jbe@0
|
1374 moonbr_send_control_message(worker, MOONBR_COMMAND_TERMINATE, -1, NULL);
|
|
jbe@0
|
1375 }
|
|
jbe@0
|
1376
|
|
jbe@0
|
1377 /* Handles status messages from child process */
|
|
jbe@0
|
1378 static void moonbr_read_controlchannel(struct moonbr_worker *worker) {
|
|
jbe@0
|
1379 char controlmsg;
|
|
jbe@0
|
1380 {
|
|
jbe@0
|
1381 ssize_t bytes_read;
|
|
jbe@0
|
1382 while ((bytes_read = read(worker->controlfd, &controlmsg, 1)) <= 0) {
|
|
jbe@0
|
1383 if (bytes_read == 0 || errno == ECONNRESET) {
|
|
jbe@0
|
1384 moonbr_log(LOG_WARNING, "Child process in pool #%i with PID %i unexpectedly closed control socket", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1385 if (close(worker->controlfd) && errno != EINTR) {
|
|
jbe@0
|
1386 moonbr_log(LOG_CRIT, "Error while closing control socket to child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1387 moonbr_terminate_error();
|
|
jbe@0
|
1388 }
|
|
jbe@0
|
1389 worker->controlfd = -1;
|
|
jbe@0
|
1390 moonbr_poll_refresh_needed = 1;
|
|
jbe@0
|
1391 return;
|
|
jbe@0
|
1392 }
|
|
jbe@0
|
1393 if (errno != EINTR) {
|
|
jbe@0
|
1394 moonbr_log(LOG_CRIT, "Unexpected error while reading control socket from child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1395 moonbr_terminate_error();
|
|
jbe@0
|
1396 }
|
|
jbe@0
|
1397 }
|
|
jbe@0
|
1398 }
|
|
jbe@0
|
1399 if (worker->idle) {
|
|
jbe@0
|
1400 moonbr_log(LOG_CRIT, "Unexpected data from supposedly idle child process in pool #%i with PID %i", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1401 moonbr_terminate_error();
|
|
jbe@0
|
1402 }
|
|
jbe@0
|
1403 if (moonbr_debug) {
|
|
jbe@0
|
1404 moonbr_log(LOG_DEBUG, "Received control message from child in pool #%i with PID %i: \"%c\"", worker->pool->poolnum, (int)worker->pid, (int)controlmsg);
|
|
jbe@0
|
1405 }
|
|
jbe@0
|
1406 switch (controlmsg) {
|
|
jbe@0
|
1407 case MOONBR_STATUS_IDLE:
|
|
jbe@0
|
1408 if (moonbr_stat) {
|
|
jbe@0
|
1409 moonbr_log(LOG_INFO, "Child process in pool #%i with PID %i reports as idle", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1410 }
|
|
jbe@0
|
1411 moonbr_add_idle_worker(worker);
|
|
jbe@0
|
1412 break;
|
|
jbe@0
|
1413 case MOONBR_STATUS_GOODBYE:
|
|
jbe@0
|
1414 if (moonbr_stat) {
|
|
jbe@0
|
1415 moonbr_log(LOG_INFO, "Child process in pool #%i with PID %i announced termination", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1416 }
|
|
jbe@0
|
1417 if (close(worker->controlfd) && errno != EINTR) {
|
|
jbe@0
|
1418 moonbr_log(LOG_CRIT, "Error while closing control socket to child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1419 moonbr_terminate_error();
|
|
jbe@0
|
1420 }
|
|
jbe@0
|
1421 worker->controlfd = -1;
|
|
jbe@0
|
1422 moonbr_poll_refresh_needed = 1;
|
|
jbe@0
|
1423 break;
|
|
jbe@0
|
1424 default:
|
|
jbe@0
|
1425 moonbr_log(LOG_CRIT, "Received illegal data (\"%c\") while reading control socket from child process in pool #%i with PID %i", (int)controlmsg, worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1426 moonbr_terminate_error();
|
|
jbe@0
|
1427 }
|
|
jbe@0
|
1428 }
|
|
jbe@0
|
1429
|
|
jbe@0
|
1430 /* Handles stderr stream from child process */
|
|
jbe@0
|
1431 static void moonbr_read_errorchannel(struct moonbr_worker *worker) {
|
|
jbe@0
|
1432 char staticbuf[MOONBR_MAXERRORLINELEN+1];
|
|
jbe@0
|
1433 char *buf = worker->errorlinebuf;
|
|
jbe@0
|
1434 if (!buf) buf = staticbuf;
|
|
jbe@0
|
1435 {
|
|
jbe@0
|
1436 ssize_t bytes_read;
|
|
jbe@0
|
1437 while (
|
|
jbe@0
|
1438 (bytes_read = read(
|
|
jbe@0
|
1439 worker->errorfd,
|
|
jbe@0
|
1440 buf + worker->errorlinelen,
|
|
jbe@0
|
1441 MOONBR_MAXERRORLINELEN+1 - worker->errorlinelen
|
|
jbe@0
|
1442 )) <= 0
|
|
jbe@0
|
1443 ) {
|
|
jbe@0
|
1444 if (bytes_read == 0 || errno == ECONNRESET) {
|
|
jbe@0
|
1445 if (moonbr_debug) {
|
|
jbe@0
|
1446 moonbr_log(LOG_DEBUG, "Child process in pool #%i with PID %i closed stderr socket", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1447 }
|
|
jbe@0
|
1448 if (close(worker->errorfd) && errno != EINTR) {
|
|
jbe@0
|
1449 moonbr_log(LOG_CRIT, "Error while closing stderr socket to child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1450 moonbr_terminate_error();
|
|
jbe@0
|
1451 }
|
|
jbe@0
|
1452 worker->errorfd = -1;
|
|
jbe@0
|
1453 moonbr_poll_refresh_needed = 1;
|
|
jbe@0
|
1454 break;
|
|
jbe@0
|
1455 }
|
|
jbe@0
|
1456 if (errno != EINTR) {
|
|
jbe@0
|
1457 moonbr_log(LOG_CRIT, "Unexpected error while reading stderr from child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1458 moonbr_terminate_error();
|
|
jbe@0
|
1459 }
|
|
jbe@0
|
1460 }
|
|
jbe@0
|
1461 worker->errorlinelen += bytes_read;
|
|
jbe@0
|
1462 }
|
|
jbe@0
|
1463 {
|
|
jbe@0
|
1464 int i;
|
|
jbe@0
|
1465 for (i=0; i<worker->errorlinelen; i++) {
|
|
jbe@0
|
1466 if (buf[i] == '\n') buf[i] = 0;
|
|
jbe@0
|
1467 if (!buf[i]) {
|
|
jbe@0
|
1468 if (worker->errorlineovf) {
|
|
jbe@0
|
1469 worker->errorlineovf = 0;
|
|
jbe@0
|
1470 } else {
|
|
jbe@0
|
1471 moonbr_log(LOG_WARNING, "Error log from process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, buf);
|
|
jbe@0
|
1472 }
|
|
jbe@0
|
1473 worker->errorlinelen -= i+1;
|
|
jbe@0
|
1474 memmove(buf, buf+i+1, worker->errorlinelen);
|
|
jbe@0
|
1475 i = -1;
|
|
jbe@0
|
1476 }
|
|
jbe@0
|
1477 }
|
|
jbe@0
|
1478 if (i > MOONBR_MAXERRORLINELEN) {
|
|
jbe@0
|
1479 buf[MOONBR_MAXERRORLINELEN] = 0;
|
|
jbe@0
|
1480 if (!worker->errorlineovf) {
|
|
jbe@0
|
1481 moonbr_log(LOG_WARNING, "Error log from process in pool #%i with PID %i (line has been truncated): %s", worker->pool->poolnum, (int)worker->pid, buf);
|
|
jbe@0
|
1482 }
|
|
jbe@0
|
1483 worker->errorlinelen = 0;
|
|
jbe@0
|
1484 worker->errorlineovf = 1;
|
|
jbe@0
|
1485 }
|
|
jbe@0
|
1486 }
|
|
jbe@0
|
1487 if (!worker->errorlinebuf && worker->errorlinelen) { /* allocate buffer on heap only if necessary */
|
|
jbe@0
|
1488 worker->errorlinebuf = malloc((MOONBR_MAXERRORLINELEN+1) * sizeof(char));
|
|
jbe@0
|
1489 if (!worker->errorlinebuf) {
|
|
jbe@0
|
1490 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
1491 moonbr_terminate_error();
|
|
jbe@0
|
1492 }
|
|
jbe@0
|
1493 memcpy(worker->errorlinebuf, staticbuf, worker->errorlinelen);
|
|
jbe@0
|
1494 }
|
|
jbe@0
|
1495 }
|
|
jbe@0
|
1496
|
|
jbe@0
|
1497
|
|
jbe@0
|
1498 /*** Handler for incoming connections ***/
|
|
jbe@0
|
1499
|
|
jbe@0
|
1500 /* Accepts one or more incoming connections on listener socket and passes it to worker(s) popped from idle queue */
|
|
jbe@0
|
1501 static void moonbr_connect(struct moonbr_pool *pool) {
|
|
jbe@0
|
1502 struct moonbr_listener *listener = moonbr_pop_connected_listener(pool);
|
|
jbe@0
|
1503 struct moonbr_worker *worker;
|
|
jbe@0
|
1504 switch (listener->proto) {
|
|
jbe@0
|
1505 case MOONBR_PROTO_INTERVAL:
|
|
jbe@0
|
1506 worker = moonbr_pop_idle_worker(pool);
|
|
jbe@0
|
1507 if (moonbr_stat) {
|
|
jbe@0
|
1508 moonbr_log(LOG_INFO, "Dispatching interval timer \"%s\" of pool #%i to PID %i", listener->proto_specific.interval.name, listener->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1509 }
|
|
jbe@0
|
1510 worker->restart_interval_listener = listener;
|
|
jbe@0
|
1511 moonbr_send_control_message(worker, MOONBR_SOCKETTYPE_INTERVAL, -1, listener);
|
|
jbe@0
|
1512 /* do not push listener to queue of idle listeners yet */
|
|
jbe@0
|
1513 break;
|
|
jbe@0
|
1514 case MOONBR_PROTO_LOCAL:
|
|
jbe@0
|
1515 do {
|
|
jbe@0
|
1516 int peerfd;
|
|
jbe@0
|
1517 struct sockaddr_un peeraddr;
|
|
jbe@0
|
1518 socklen_t peeraddr_len = sizeof(struct sockaddr_un);
|
|
jbe@0
|
1519 peerfd = accept4(
|
|
jbe@0
|
1520 listener->listenfd,
|
|
jbe@0
|
1521 (struct sockaddr *)&peeraddr,
|
|
jbe@0
|
1522 &peeraddr_len,
|
|
jbe@0
|
1523 SOCK_CLOEXEC
|
|
jbe@0
|
1524 );
|
|
jbe@0
|
1525 if (peerfd == -1) {
|
|
jbe@0
|
1526 if (errno == EWOULDBLOCK) {
|
|
jbe@0
|
1527 break;
|
|
jbe@0
|
1528 } else if (errno == ECONNABORTED) {
|
|
jbe@0
|
1529 moonbr_log(LOG_WARNING, "Connection aborted before accepting it (proto=\"local\", path=\"%s\")", listener->proto_specific.local.path);
|
|
jbe@0
|
1530 break;
|
|
jbe@0
|
1531 } else if (errno != EINTR) {
|
|
jbe@0
|
1532 moonbr_log(LOG_ERR, "Could not accept socket connection: %s", strerror(errno));
|
|
jbe@0
|
1533 moonbr_terminate_error();
|
|
jbe@0
|
1534 }
|
|
jbe@0
|
1535 } else {
|
|
jbe@0
|
1536 worker = moonbr_pop_idle_worker(pool);
|
|
jbe@0
|
1537 if (moonbr_stat) {
|
|
jbe@0
|
1538 moonbr_log(LOG_INFO, "Dispatching local socket connection on path \"%s\" for pool #%i to PID %i", listener->proto_specific.local.path, listener->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1539 }
|
|
jbe@0
|
1540 moonbr_send_control_message(worker, MOONBR_SOCKETTYPE_LOCAL, peerfd, listener);
|
|
jbe@0
|
1541 if (close(peerfd) && errno != EINTR) {
|
|
jbe@0
|
1542 moonbr_log(LOG_ERR, "Could not close incoming socket connection in parent process: %s", strerror(errno));
|
|
jbe@0
|
1543 moonbr_terminate_error();
|
|
jbe@0
|
1544 }
|
|
jbe@0
|
1545 }
|
|
jbe@0
|
1546 } while (pool->first_idle_worker);
|
|
jbe@0
|
1547 moonbr_add_idle_listener(listener);
|
|
jbe@0
|
1548 break;
|
|
jbe@0
|
1549 case MOONBR_PROTO_TCP6:
|
|
jbe@0
|
1550 do {
|
|
jbe@0
|
1551 int peerfd;
|
|
jbe@0
|
1552 struct sockaddr_in6 peeraddr;
|
|
jbe@0
|
1553 socklen_t peeraddr_len = sizeof(struct sockaddr_in6);
|
|
jbe@0
|
1554 peerfd = accept4(
|
|
jbe@0
|
1555 listener->listenfd,
|
|
jbe@0
|
1556 (struct sockaddr *)&peeraddr,
|
|
jbe@0
|
1557 &peeraddr_len,
|
|
jbe@0
|
1558 SOCK_CLOEXEC
|
|
jbe@0
|
1559 );
|
|
jbe@0
|
1560 if (peerfd == -1) {
|
|
jbe@0
|
1561 if (errno == EWOULDBLOCK) {
|
|
jbe@0
|
1562 break;
|
|
jbe@0
|
1563 } else if (errno == ECONNABORTED) {
|
|
jbe@0
|
1564 moonbr_log(LOG_WARNING, "Connection aborted before accepting it (proto=\"tcp6\", port=%i)", listener->proto_specific.tcp.port);
|
|
jbe@0
|
1565 break;
|
|
jbe@0
|
1566 } else if (errno != EINTR) {
|
|
jbe@0
|
1567 moonbr_log(LOG_ERR, "Could not accept socket connection: %s", strerror(errno));
|
|
jbe@0
|
1568 moonbr_terminate_error();
|
|
jbe@0
|
1569 }
|
|
jbe@0
|
1570 } else {
|
|
jbe@0
|
1571 worker = moonbr_pop_idle_worker(pool);
|
|
jbe@0
|
1572 if (moonbr_stat) {
|
|
jbe@0
|
1573 moonbr_log(LOG_INFO, "Dispatching TCP/IPv6 connection for pool #%i on port %i to PID %i", listener->pool->poolnum, listener->proto_specific.tcp.port, (int)worker->pid);
|
|
jbe@0
|
1574 }
|
|
jbe@0
|
1575 moonbr_send_control_message(worker, MOONBR_SOCKETTYPE_NETWORK, peerfd, listener);
|
|
jbe@0
|
1576 if (close(peerfd) && errno != EINTR) {
|
|
jbe@0
|
1577 moonbr_log(LOG_ERR, "Could not close incoming socket connection in parent process: %s", strerror(errno));
|
|
jbe@0
|
1578 moonbr_terminate_error();
|
|
jbe@0
|
1579 }
|
|
jbe@0
|
1580 }
|
|
jbe@0
|
1581 } while (pool->first_idle_worker);
|
|
jbe@0
|
1582 moonbr_add_idle_listener(listener);
|
|
jbe@0
|
1583 break;
|
|
jbe@0
|
1584 case MOONBR_PROTO_TCP4:
|
|
jbe@0
|
1585 do {
|
|
jbe@0
|
1586 int peerfd;
|
|
jbe@0
|
1587 struct sockaddr_in peeraddr;
|
|
jbe@0
|
1588 socklen_t peeraddr_len = sizeof(struct sockaddr_in);
|
|
jbe@0
|
1589 peerfd = accept4(
|
|
jbe@0
|
1590 listener->listenfd,
|
|
jbe@0
|
1591 (struct sockaddr *)&peeraddr,
|
|
jbe@0
|
1592 &peeraddr_len,
|
|
jbe@0
|
1593 SOCK_CLOEXEC
|
|
jbe@0
|
1594 );
|
|
jbe@0
|
1595 if (peerfd == -1) {
|
|
jbe@0
|
1596 if (errno == EWOULDBLOCK) {
|
|
jbe@0
|
1597 break;
|
|
jbe@0
|
1598 } else if (errno == ECONNABORTED) {
|
|
jbe@0
|
1599 moonbr_log(LOG_WARNING, "Connection aborted before accepting it (proto=\"tcp4\", port=%i)", listener->proto_specific.tcp.port);
|
|
jbe@0
|
1600 break;
|
|
jbe@0
|
1601 } else if (errno != EINTR) {
|
|
jbe@0
|
1602 moonbr_log(LOG_ERR, "Could not accept socket connection: %s", strerror(errno));
|
|
jbe@0
|
1603 moonbr_terminate_error();
|
|
jbe@0
|
1604 }
|
|
jbe@0
|
1605 } else {
|
|
jbe@0
|
1606 worker = moonbr_pop_idle_worker(pool);
|
|
jbe@0
|
1607 if (moonbr_stat) {
|
|
jbe@0
|
1608 moonbr_log(LOG_INFO, "Dispatching TCP/IPv4 connection for pool #%i on port %i to PID %i", listener->pool->poolnum, listener->proto_specific.tcp.port, (int)worker->pid);
|
|
jbe@0
|
1609 }
|
|
jbe@0
|
1610 moonbr_send_control_message(worker, MOONBR_SOCKETTYPE_NETWORK, peerfd, listener);
|
|
jbe@0
|
1611 if (close(peerfd) && errno != EINTR) {
|
|
jbe@0
|
1612 moonbr_log(LOG_ERR, "Could not close incoming socket connection in parent process: %s", strerror(errno));
|
|
jbe@0
|
1613 moonbr_terminate_error();
|
|
jbe@0
|
1614 }
|
|
jbe@0
|
1615 }
|
|
jbe@0
|
1616 } while (pool->first_idle_worker);
|
|
jbe@0
|
1617 moonbr_add_idle_listener(listener);
|
|
jbe@0
|
1618 break;
|
|
jbe@0
|
1619 default:
|
|
jbe@0
|
1620 moonbr_log(LOG_ERR, "Internal error (should not happen): Unexpected value in listener.proto field");
|
|
jbe@0
|
1621 moonbr_terminate_error();
|
|
jbe@0
|
1622 }
|
|
jbe@0
|
1623 }
|
|
jbe@0
|
1624
|
|
jbe@0
|
1625
|
|
jbe@0
|
1626 /*** Functions to initialize and restart interval timers ***/
|
|
jbe@0
|
1627
|
|
jbe@0
|
1628 /* Initializes all interval timers */
|
|
jbe@0
|
1629 static void moonbr_interval_initialize() {
|
|
jbe@0
|
1630 struct timeval now;
|
|
jbe@0
|
1631 struct moonbr_pool *pool;
|
|
jbe@0
|
1632 moonbr_now(&now);
|
|
jbe@0
|
1633 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
1634 int i;
|
|
jbe@0
|
1635 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
1636 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
1637 if (listener->proto == MOONBR_PROTO_INTERVAL) {
|
|
jbe@0
|
1638 timeradd(
|
|
jbe@0
|
1639 &now,
|
|
jbe@0
|
1640 &listener->proto_specific.interval.delay,
|
|
jbe@0
|
1641 &listener->proto_specific.interval.wakeup
|
|
jbe@0
|
1642 );
|
|
jbe@0
|
1643 }
|
|
jbe@0
|
1644 }
|
|
jbe@0
|
1645 }
|
|
jbe@0
|
1646 }
|
|
jbe@0
|
1647
|
|
jbe@0
|
1648 /* If necessary, restarts interval timers and queues interval listener as idle after a worker changed status */
|
|
jbe@0
|
1649 static void moonbr_interval_restart(
|
|
jbe@0
|
1650 struct moonbr_worker *worker,
|
|
jbe@0
|
1651 struct timeval *now /* passed to synchronize with moonbr_run() function */
|
|
jbe@0
|
1652 ) {
|
|
jbe@0
|
1653 struct moonbr_listener *listener = worker->restart_interval_listener;
|
|
jbe@0
|
1654 if (listener) {
|
|
jbe@0
|
1655 moonbr_add_idle_listener(listener);
|
|
jbe@0
|
1656 worker->restart_interval_listener = NULL;
|
|
jbe@0
|
1657 if (listener->proto_specific.interval.strict) {
|
|
jbe@0
|
1658 timeradd(
|
|
jbe@0
|
1659 &listener->proto_specific.interval.wakeup,
|
|
jbe@0
|
1660 &listener->proto_specific.interval.delay,
|
|
jbe@0
|
1661 &listener->proto_specific.interval.wakeup
|
|
jbe@0
|
1662 );
|
|
jbe@0
|
1663 if (timercmp(&listener->proto_specific.interval.wakeup, now, <)) {
|
|
jbe@0
|
1664 listener->proto_specific.interval.wakeup = *now;
|
|
jbe@0
|
1665 }
|
|
jbe@0
|
1666 } else {
|
|
jbe@0
|
1667 timeradd(
|
|
jbe@0
|
1668 now,
|
|
jbe@0
|
1669 &listener->proto_specific.interval.delay,
|
|
jbe@0
|
1670 &listener->proto_specific.interval.wakeup
|
|
jbe@0
|
1671 );
|
|
jbe@0
|
1672 }
|
|
jbe@0
|
1673 }
|
|
jbe@0
|
1674 }
|
|
jbe@0
|
1675
|
|
jbe@0
|
1676
|
|
jbe@0
|
1677 /*** Main loop and helper functions ***/
|
|
jbe@0
|
1678
|
|
jbe@0
|
1679 /* Stores the earliest required wakeup time in 'wait' variable */
|
|
jbe@0
|
1680 static void moonbr_calc_wait(struct timeval *wait, struct timeval *wakeup) {
|
|
jbe@0
|
1681 if (!timerisset(wait) || timercmp(wakeup, wait, <)) *wait = *wakeup;
|
|
jbe@0
|
1682 }
|
|
jbe@0
|
1683
|
|
jbe@0
|
1684 /* Main loop of Moonbridge system (including initialization of signal handlers and polling structures) */
|
|
jbe@0
|
1685 static void moonbr_run(lua_State *L) {
|
|
jbe@0
|
1686 struct timeval now;
|
|
jbe@0
|
1687 struct moonbr_pool *pool;
|
|
jbe@0
|
1688 struct moonbr_worker *worker;
|
|
jbe@0
|
1689 struct moonbr_worker *next_worker; /* needed when worker is removed during iteration of workers */
|
|
jbe@0
|
1690 struct moonbr_listener *listener;
|
|
jbe@0
|
1691 struct moonbr_listener *next_listener; /* needed when listener is removed during iteration of listeners */
|
|
jbe@0
|
1692 int i;
|
|
jbe@0
|
1693 moonbr_poll_init(); /* must be executed before moonbr_signal_init() */
|
|
jbe@0
|
1694 moonbr_signal_init();
|
|
jbe@0
|
1695 moonbr_interval_initialize();
|
|
jbe@0
|
1696 moonbr_pstate = MOONBR_PSTATE_RUNNING;
|
|
jbe@0
|
1697 while (1) {
|
|
jbe@0
|
1698 struct timeval wait = {0, }; /* point in time when premature wakeup of poll() is required */
|
|
jbe@0
|
1699 if (moonbr_cond_interrupt) {
|
|
jbe@0
|
1700 moonbr_log(LOG_WARNING, "Fast shutdown requested");
|
|
jbe@0
|
1701 moonbr_terminate(MOONBR_EXITCODE_GRACEFUL);
|
|
jbe@0
|
1702 }
|
|
jbe@0
|
1703 if (moonbr_cond_terminate) {
|
|
jbe@0
|
1704 moonbr_initiate_shutdown();
|
|
jbe@0
|
1705 moonbr_cond_terminate = 0;
|
|
jbe@0
|
1706 }
|
|
jbe@0
|
1707 moonbr_cond_child = 0; /* must not be reset between moonbr_try_destroy_worker() and poll() */
|
|
jbe@0
|
1708 moonbr_now(&now);
|
|
jbe@0
|
1709 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
1710 int terminated_worker_count = 0; /* allows shortcut for new worker creation */
|
|
jbe@0
|
1711 /* terminate idle workers when expired */
|
|
jbe@0
|
1712 if (timerisset(&pool->idle_timeout)) {
|
|
jbe@0
|
1713 while ((worker = pool->first_idle_worker) != NULL) {
|
|
jbe@0
|
1714 if (timercmp(&worker->idle_expiration, &now, >)) break;
|
|
jbe@0
|
1715 moonbr_pop_idle_worker(pool);
|
|
jbe@0
|
1716 moonbr_terminate_idle_worker(worker);
|
|
jbe@0
|
1717 }
|
|
jbe@0
|
1718 }
|
|
jbe@0
|
1719 /* mark listeners as connected when incoming connection is pending */
|
|
jbe@0
|
1720 for (listener=pool->first_idle_listener; listener; listener=next_listener) {
|
|
jbe@0
|
1721 next_listener = listener->next_listener; /* extra variable necessary due to changing list */
|
|
jbe@0
|
1722 if (listener->pollidx != -1) {
|
|
jbe@0
|
1723 if (moonbr_poll_fds[listener->pollidx].revents) {
|
|
jbe@0
|
1724 moonbr_poll_fds[listener->pollidx].revents = 0;
|
|
jbe@0
|
1725 moonbr_remove_idle_listener(listener);
|
|
jbe@0
|
1726 moonbr_add_connected_listener(listener);
|
|
jbe@0
|
1727 }
|
|
jbe@0
|
1728 } else if (listener->proto == MOONBR_PROTO_INTERVAL) {
|
|
jbe@0
|
1729 if (!timercmp(&listener->proto_specific.interval.wakeup, &now, >)) {
|
|
jbe@0
|
1730 moonbr_remove_idle_listener(listener);
|
|
jbe@0
|
1731 moonbr_add_connected_listener(listener);
|
|
jbe@0
|
1732 }
|
|
jbe@0
|
1733 } else {
|
|
jbe@0
|
1734 moonbr_log(LOG_CRIT, "Internal error (should not happen): Listener is neither an interval timer nor has the 'pollidx' value set");
|
|
jbe@0
|
1735 moonbr_terminate_error();
|
|
jbe@0
|
1736 }
|
|
jbe@0
|
1737 }
|
|
jbe@0
|
1738 /* process input from child processes */
|
|
jbe@0
|
1739 for (i=0; i<moonbr_poll_worker_count; i++) {
|
|
jbe@0
|
1740 if (moonbr_poll_worker_fds[i].revents) {
|
|
jbe@0
|
1741 moonbr_poll_worker_fds[i].revents = 0;
|
|
jbe@0
|
1742 struct moonbr_poll_worker *poll_worker = &moonbr_poll_workers[i];
|
|
jbe@0
|
1743 switch (poll_worker->channel) {
|
|
jbe@0
|
1744 case MOONBR_POLL_WORKER_CONTROLCHANNEL:
|
|
jbe@0
|
1745 moonbr_read_controlchannel(poll_worker->worker);
|
|
jbe@0
|
1746 moonbr_interval_restart(poll_worker->worker, &now);
|
|
jbe@0
|
1747 break;
|
|
jbe@0
|
1748 case MOONBR_POLL_WORKER_ERRORCHANNEL:
|
|
jbe@0
|
1749 moonbr_read_errorchannel(poll_worker->worker);
|
|
jbe@0
|
1750 break;
|
|
jbe@0
|
1751 }
|
|
jbe@0
|
1752 }
|
|
jbe@0
|
1753 }
|
|
jbe@0
|
1754 /* collect dead child processes */
|
|
jbe@0
|
1755 for (worker=pool->first_worker; worker; worker=next_worker) {
|
|
jbe@0
|
1756 next_worker = worker->next_worker; /* extra variable necessary due to changing list */
|
|
jbe@0
|
1757 switch (moonbr_try_destroy_worker(worker)) {
|
|
jbe@0
|
1758 case MOONBR_DESTROY_PREPARE:
|
|
jbe@0
|
1759 pool->use_fork_error_wakeup = 1;
|
|
jbe@0
|
1760 break;
|
|
jbe@0
|
1761 case MOONBR_DESTROY_IDLE_OR_ASSIGNED:
|
|
jbe@0
|
1762 terminated_worker_count++;
|
|
jbe@0
|
1763 break;
|
|
jbe@0
|
1764 }
|
|
jbe@0
|
1765 }
|
|
jbe@0
|
1766 /* connect listeners with idle workers */
|
|
jbe@0
|
1767 if (!moonbr_shutdown_in_progress) {
|
|
jbe@0
|
1768 while (pool->first_connected_listener && pool->first_idle_worker) {
|
|
jbe@0
|
1769 moonbr_connect(pool);
|
|
jbe@0
|
1770 }
|
|
jbe@0
|
1771 }
|
|
jbe@0
|
1772 /* create new worker processes */
|
|
jbe@0
|
1773 while (
|
|
jbe@0
|
1774 pool->total_worker_count < pool->max_fork && (
|
|
jbe@0
|
1775 pool->unassigned_worker_count < pool->pre_fork ||
|
|
jbe@0
|
1776 pool->total_worker_count < pool->min_fork
|
|
jbe@0
|
1777 )
|
|
jbe@0
|
1778 ) {
|
|
jbe@0
|
1779 if (pool->use_fork_error_wakeup) {
|
|
jbe@0
|
1780 if (timercmp(&pool->fork_error_wakeup, &now, >)) {
|
|
jbe@0
|
1781 moonbr_calc_wait(&wait, &pool->fork_error_wakeup);
|
|
jbe@0
|
1782 break;
|
|
jbe@0
|
1783 }
|
|
jbe@0
|
1784 } else {
|
|
jbe@0
|
1785 if (terminated_worker_count) {
|
|
jbe@0
|
1786 terminated_worker_count--;
|
|
jbe@0
|
1787 } else if (timercmp(&pool->fork_wakeup, &now, >)) {
|
|
jbe@0
|
1788 moonbr_calc_wait(&wait, &pool->fork_wakeup);
|
|
jbe@0
|
1789 break;
|
|
jbe@0
|
1790 }
|
|
jbe@0
|
1791 }
|
|
jbe@0
|
1792 if (moonbr_create_worker(pool, L)) {
|
|
jbe@0
|
1793 /* on error, enforce error delay */
|
|
jbe@0
|
1794 timeradd(&now, &pool->fork_error_delay, &pool->fork_error_wakeup);
|
|
jbe@0
|
1795 pool->use_fork_error_wakeup = 1;
|
|
jbe@0
|
1796 moonbr_calc_wait(&wait, &pool->fork_error_wakeup);
|
|
jbe@0
|
1797 break;
|
|
jbe@0
|
1798 } else {
|
|
jbe@0
|
1799 /* normal fork delay on success */
|
|
jbe@0
|
1800 timeradd(&now, &pool->fork_delay, &pool->fork_wakeup);
|
|
jbe@0
|
1801 timeradd(&now, &pool->fork_error_delay, &pool->fork_error_wakeup);
|
|
jbe@0
|
1802 pool->use_fork_error_wakeup = 0; /* gets set later if error occures during preparation */
|
|
jbe@0
|
1803 }
|
|
jbe@0
|
1804 }
|
|
jbe@0
|
1805 /* terminate excessive worker processes */
|
|
jbe@0
|
1806 while (
|
|
jbe@0
|
1807 pool->total_worker_count > pool->min_fork &&
|
|
jbe@0
|
1808 pool->idle_worker_count > pool->pre_fork
|
|
jbe@0
|
1809 ) {
|
|
jbe@0
|
1810 if (timerisset(&pool->exit_wakeup)) {
|
|
jbe@0
|
1811 if (timercmp(&pool->exit_wakeup, &now, >)) {
|
|
jbe@0
|
1812 moonbr_calc_wait(&wait, &pool->exit_wakeup);
|
|
jbe@0
|
1813 break;
|
|
jbe@0
|
1814 }
|
|
jbe@0
|
1815 moonbr_terminate_idle_worker(moonbr_pop_idle_worker(pool));
|
|
jbe@0
|
1816 timeradd(&now, &pool->exit_delay, &pool->exit_wakeup);
|
|
jbe@0
|
1817 } else {
|
|
jbe@0
|
1818 timeradd(&now, &pool->exit_delay, &pool->exit_wakeup);
|
|
jbe@0
|
1819 break;
|
|
jbe@0
|
1820 }
|
|
jbe@0
|
1821 }
|
|
jbe@0
|
1822 if (!(
|
|
jbe@0
|
1823 pool->total_worker_count > pool->min_fork &&
|
|
jbe@0
|
1824 pool->idle_worker_count > pool->pre_fork
|
|
jbe@0
|
1825 )) {
|
|
jbe@0
|
1826 timerclear(&pool->exit_wakeup); /* timer gets restarted later when there are excessive workers */
|
|
jbe@0
|
1827 }
|
|
jbe@0
|
1828 /* optionally output worker count stats */
|
|
jbe@0
|
1829 if (moonbr_stat && pool->worker_count_stat) {
|
|
jbe@0
|
1830 pool->worker_count_stat = 0;
|
|
jbe@0
|
1831 moonbr_log(
|
|
jbe@0
|
1832 LOG_INFO,
|
|
jbe@0
|
1833 "Worker count for pool #%i: %i idle, %i assigned, %i total",
|
|
jbe@0
|
1834 pool->poolnum, pool->idle_worker_count,
|
|
jbe@0
|
1835 pool->total_worker_count - pool->unassigned_worker_count,
|
|
jbe@0
|
1836 pool->total_worker_count);
|
|
jbe@0
|
1837 }
|
|
jbe@0
|
1838 /* calculate wakeup time for interval listeners */
|
|
jbe@0
|
1839 for (listener=pool->first_idle_listener; listener; listener=listener->next_listener) {
|
|
jbe@0
|
1840 if (listener->proto == MOONBR_PROTO_INTERVAL) {
|
|
jbe@0
|
1841 moonbr_calc_wait(&wait, &listener->proto_specific.interval.wakeup);
|
|
jbe@0
|
1842 }
|
|
jbe@0
|
1843 }
|
|
jbe@0
|
1844 /* calculate wakeup time for idle workers (only first idle worker is significant) */
|
|
jbe@0
|
1845 if (timerisset(&pool->idle_timeout) && pool->first_idle_worker) {
|
|
jbe@0
|
1846 moonbr_calc_wait(&wait, &pool->first_idle_worker->idle_expiration);
|
|
jbe@0
|
1847 }
|
|
jbe@0
|
1848 }
|
|
jbe@0
|
1849 /* check if shutdown is complete */
|
|
jbe@0
|
1850 if (moonbr_shutdown_in_progress) {
|
|
jbe@0
|
1851 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
1852 if (pool->first_worker) break;
|
|
jbe@0
|
1853 }
|
|
jbe@0
|
1854 if (!pool) {
|
|
jbe@0
|
1855 moonbr_log(LOG_INFO, "All worker threads have terminated");
|
|
jbe@0
|
1856 moonbr_terminate(MOONBR_EXITCODE_GRACEFUL);
|
|
jbe@0
|
1857 }
|
|
jbe@0
|
1858 }
|
|
jbe@0
|
1859 if (moonbr_poll_refresh_needed) moonbr_poll_refresh();
|
|
jbe@0
|
1860 moonbr_cond_poll = 1;
|
|
jbe@0
|
1861 if (!moonbr_cond_child && !moonbr_cond_terminate && !moonbr_cond_interrupt) {
|
|
jbe@0
|
1862 int timeout;
|
|
jbe@0
|
1863 if (timerisset(&wait)) {
|
|
jbe@0
|
1864 if (timercmp(&wait, &now, <)) {
|
|
jbe@0
|
1865 moonbr_log(LOG_CRIT, "Internal error (should not happen): Future is in the past");
|
|
jbe@0
|
1866 moonbr_terminate_error();
|
|
jbe@0
|
1867 }
|
|
jbe@0
|
1868 timersub(&wait, &now, &wait);
|
|
jbe@0
|
1869 timeout = wait.tv_sec * 1000 + wait.tv_usec / 1000;
|
|
jbe@0
|
1870 } else {
|
|
jbe@0
|
1871 timeout = INFTIM;
|
|
jbe@0
|
1872 }
|
|
jbe@0
|
1873 if (moonbr_debug) {
|
|
jbe@0
|
1874 moonbr_log(LOG_DEBUG, "Waiting for I/O");
|
|
jbe@0
|
1875 }
|
|
jbe@0
|
1876 poll(moonbr_poll_fds, moonbr_poll_fds_count, timeout);
|
|
jbe@0
|
1877 } else {
|
|
jbe@0
|
1878 if (moonbr_debug) {
|
|
jbe@0
|
1879 moonbr_log(LOG_DEBUG, "Do not wait for I/O");
|
|
jbe@0
|
1880 }
|
|
jbe@0
|
1881 }
|
|
jbe@0
|
1882 moonbr_cond_poll = 0;
|
|
jbe@0
|
1883 moonbr_poll_reset_signal();
|
|
jbe@0
|
1884 }
|
|
jbe@0
|
1885 }
|
|
jbe@0
|
1886
|
|
jbe@0
|
1887
|
|
jbe@0
|
1888 /*** Lua interface ***/
|
|
jbe@0
|
1889
|
|
jbe@0
|
1890 static int moonbr_lua_panic(lua_State *L) {
|
|
jbe@0
|
1891 const char *errmsg;
|
|
jbe@0
|
1892 errmsg = lua_tostring(L, -1);
|
|
jbe@0
|
1893 if (!errmsg) {
|
|
jbe@0
|
1894 if (lua_isnoneornil(L, -1)) errmsg = "(error message is nil)";
|
|
jbe@0
|
1895 else errmsg = "(error message is not a string)";
|
|
jbe@0
|
1896 }
|
|
jbe@0
|
1897 if (moonbr_pstate == MOONBR_PSTATE_FORKED) {
|
|
jbe@0
|
1898 fprintf(stderr, "Uncaught Lua error: %s\n", errmsg);
|
|
jbe@0
|
1899 exit(1);
|
|
jbe@0
|
1900 } else {
|
|
jbe@0
|
1901 moonbr_log(LOG_CRIT, "Uncaught Lua error: %s", errmsg);
|
|
jbe@0
|
1902 moonbr_terminate_error();
|
|
jbe@0
|
1903 }
|
|
jbe@0
|
1904 return 0;
|
|
jbe@0
|
1905 }
|
|
jbe@0
|
1906
|
|
jbe@0
|
1907 static int moonbr_addtraceback(lua_State *L) {
|
|
jbe@0
|
1908 luaL_traceback(L, L, luaL_tolstring(L, 1, NULL), 1);
|
|
jbe@0
|
1909 return 1;
|
|
jbe@0
|
1910 }
|
|
jbe@0
|
1911
|
|
jbe@0
|
1912 /* Memory allocator that allows limiting memory consumption */
|
|
jbe@0
|
1913 static void *moonbr_alloc (void *ud, void *ptr, size_t osize, size_t nsize) {
|
|
jbe@0
|
1914 (void)ud; /* not used */
|
|
jbe@0
|
1915 if (nsize == 0) {
|
|
jbe@0
|
1916 if (ptr) {
|
|
jbe@0
|
1917 moonbr_memory_usage -= osize;
|
|
jbe@0
|
1918 free(ptr);
|
|
jbe@0
|
1919 }
|
|
jbe@0
|
1920 return NULL;
|
|
jbe@0
|
1921 } else if (ptr) {
|
|
jbe@0
|
1922 if (
|
|
jbe@0
|
1923 moonbr_memory_limit &&
|
|
jbe@0
|
1924 nsize > osize &&
|
|
jbe@0
|
1925 moonbr_memory_usage + (nsize - osize) > moonbr_memory_limit
|
|
jbe@0
|
1926 ) {
|
|
jbe@0
|
1927 return NULL;
|
|
jbe@0
|
1928 } else {
|
|
jbe@0
|
1929 ptr = realloc(ptr, nsize);
|
|
jbe@0
|
1930 if (ptr) moonbr_memory_usage += nsize - osize;
|
|
jbe@0
|
1931 }
|
|
jbe@0
|
1932 } else {
|
|
jbe@0
|
1933 if (
|
|
jbe@0
|
1934 moonbr_memory_limit &&
|
|
jbe@0
|
1935 moonbr_memory_usage + nsize > moonbr_memory_limit
|
|
jbe@0
|
1936 ) {
|
|
jbe@0
|
1937 return NULL;
|
|
jbe@0
|
1938 } else {
|
|
jbe@0
|
1939 ptr = realloc(ptr, nsize);
|
|
jbe@0
|
1940 if (ptr) moonbr_memory_usage += nsize;
|
|
jbe@0
|
1941 }
|
|
jbe@0
|
1942 }
|
|
jbe@0
|
1943 return ptr;
|
|
jbe@0
|
1944 }
|
|
jbe@0
|
1945
|
|
jbe@78
|
1946 /* New method for Lua file objects: read until terminator or length exceeded */
|
|
jbe@78
|
1947 static int moonbr_readuntil(lua_State *L) {
|
|
jbe@78
|
1948 luaL_Stream *stream;
|
|
jbe@78
|
1949 FILE *file;
|
|
jbe@78
|
1950 const char *terminatorstr;
|
|
jbe@78
|
1951 size_t terminatorlen;
|
|
jbe@78
|
1952 luaL_Buffer buf;
|
|
jbe@78
|
1953 lua_Integer maxlen;
|
|
jbe@78
|
1954 char terminator;
|
|
jbe@78
|
1955 int byte;
|
|
jbe@78
|
1956 stream = luaL_checkudata(L, 1, LUA_FILEHANDLE);
|
|
jbe@78
|
1957 terminatorstr = luaL_checklstring(L, 2, &terminatorlen);
|
|
jbe@78
|
1958 luaL_argcheck(L, terminatorlen == 1, 2, "single byte expected");
|
|
jbe@78
|
1959 maxlen = luaL_optinteger(L, 3, 0);
|
|
jbe@78
|
1960 if (!stream->closef) luaL_error(L, "attempt to use a closed file");
|
|
jbe@78
|
1961 file = stream->f;
|
|
jbe@78
|
1962 luaL_buffinit(L, &buf);
|
|
jbe@78
|
1963 if (!maxlen) maxlen = -1;
|
|
jbe@78
|
1964 terminator = terminatorstr[0];
|
|
jbe@78
|
1965 while (maxlen > 0 ? maxlen-- : maxlen) {
|
|
jbe@78
|
1966 byte = fgetc(file);
|
|
jbe@78
|
1967 if (byte == EOF) {
|
|
jbe@78
|
1968 if (ferror(file)) {
|
|
jbe@78
|
1969 char errmsg[MOONBR_MAXSTRERRORLEN];
|
|
jbe@78
|
1970 strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN); /* use thread-safe call in case child created threads */
|
|
jbe@78
|
1971 lua_pushnil(L);
|
|
jbe@78
|
1972 lua_pushstring(L, errmsg);
|
|
jbe@78
|
1973 return 2;
|
|
jbe@78
|
1974 } else {
|
|
jbe@78
|
1975 break;
|
|
jbe@78
|
1976 }
|
|
jbe@78
|
1977 }
|
|
jbe@78
|
1978 luaL_addchar(&buf, byte);
|
|
jbe@78
|
1979 if (byte == terminator) break;
|
|
jbe@78
|
1980 }
|
|
jbe@78
|
1981 luaL_pushresult(&buf);
|
|
jbe@78
|
1982 if (!lua_rawlen(L, -1)) lua_pushnil(L);
|
|
jbe@78
|
1983 return 1;
|
|
jbe@78
|
1984 }
|
|
jbe@78
|
1985
|
|
jbe@66
|
1986 static int moonbr_lua_tonatural(lua_State *L, int idx) {
|
|
jbe@66
|
1987 int isnum;
|
|
jbe@66
|
1988 lua_Number n;
|
|
jbe@66
|
1989 n = lua_tonumberx(L, idx, &isnum);
|
|
jbe@66
|
1990 if (isnum && n>=0 && n<INT_MAX && (lua_Number)(int)n == n) return n;
|
|
jbe@66
|
1991 else return -1;
|
|
jbe@66
|
1992 }
|
|
jbe@66
|
1993
|
|
jbe@66
|
1994 static int moonbr_lua_totimeval(lua_State *L, int idx, struct timeval *value) {
|
|
jbe@66
|
1995 int isnum;
|
|
jbe@66
|
1996 lua_Number n;
|
|
jbe@66
|
1997 n = lua_tonumberx(L, idx, &isnum);
|
|
jbe@66
|
1998 if (isnum && n>=0 && n<=100000000) {
|
|
jbe@66
|
1999 value->tv_sec = n;
|
|
jbe@66
|
2000 value->tv_usec = 1e6 * (n - value->tv_sec);
|
|
jbe@66
|
2001 return 1;
|
|
jbe@66
|
2002 } else {
|
|
jbe@66
|
2003 return 0;
|
|
jbe@66
|
2004 }
|
|
jbe@66
|
2005 }
|
|
jbe@66
|
2006
|
|
jbe@0
|
2007 static int moonbr_timeout(lua_State *L) {
|
|
jbe@0
|
2008 struct itimerval oldval;
|
|
jbe@0
|
2009 if (lua_isnoneornil(L, 1) && lua_isnoneornil(L, 2)) {
|
|
jbe@0
|
2010 getitimer(ITIMER_REAL, &oldval);
|
|
jbe@0
|
2011 } else {
|
|
jbe@0
|
2012 struct itimerval newval = {};
|
|
jbe@39
|
2013 timerclear(&newval.it_interval);
|
|
jbe@39
|
2014 timerclear(&newval.it_value);
|
|
jbe@0
|
2015 if (lua_toboolean(L, 1)) {
|
|
jbe@0
|
2016 luaL_argcheck(
|
|
jbe@0
|
2017 L, moonbr_lua_totimeval(L, 1, &newval.it_value), 1,
|
|
jbe@0
|
2018 "interval in seconds expected"
|
|
jbe@0
|
2019 );
|
|
jbe@0
|
2020 }
|
|
jbe@0
|
2021 if (lua_isnoneornil(L, 2)) {
|
|
jbe@0
|
2022 if (setitimer(ITIMER_REAL, &newval, &oldval)) {
|
|
jbe@0
|
2023 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@0
|
2024 moonbr_terminate_error();
|
|
jbe@0
|
2025 }
|
|
jbe@0
|
2026 } else {
|
|
jbe@0
|
2027 getitimer(ITIMER_REAL, &oldval);
|
|
jbe@39
|
2028 if (!timerisset(&oldval.it_value)) {
|
|
jbe@39
|
2029 if (setitimer(ITIMER_REAL, &newval, NULL)) {
|
|
jbe@39
|
2030 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@39
|
2031 moonbr_terminate_error();
|
|
jbe@39
|
2032 }
|
|
jbe@39
|
2033 lua_call(L, lua_gettop(L) - 2, LUA_MULTRET);
|
|
jbe@39
|
2034 timerclear(&newval.it_value);
|
|
jbe@39
|
2035 if (setitimer(ITIMER_REAL, &newval, NULL)) {
|
|
jbe@39
|
2036 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@39
|
2037 moonbr_terminate_error();
|
|
jbe@39
|
2038 }
|
|
jbe@39
|
2039 } else if (timercmp(&newval.it_value, &oldval.it_value, <)) {
|
|
jbe@0
|
2040 struct itimerval remval;
|
|
jbe@0
|
2041 if (setitimer(ITIMER_REAL, &newval, NULL)) {
|
|
jbe@0
|
2042 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@0
|
2043 moonbr_terminate_error();
|
|
jbe@0
|
2044 }
|
|
jbe@0
|
2045 lua_call(L, lua_gettop(L) - 2, LUA_MULTRET);
|
|
jbe@0
|
2046 getitimer(ITIMER_REAL, &remval);
|
|
jbe@0
|
2047 timersub(&oldval.it_value, &newval.it_value, &newval.it_value);
|
|
jbe@0
|
2048 timeradd(&newval.it_value, &remval.it_value, &newval.it_value);
|
|
jbe@0
|
2049 if (setitimer(ITIMER_REAL, &newval, NULL)) {
|
|
jbe@0
|
2050 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@0
|
2051 moonbr_terminate_error();
|
|
jbe@0
|
2052 }
|
|
jbe@0
|
2053 } else {
|
|
jbe@0
|
2054 lua_call(L, lua_gettop(L) - 2, LUA_MULTRET);
|
|
jbe@0
|
2055 }
|
|
jbe@0
|
2056 return lua_gettop(L) - 1;
|
|
jbe@0
|
2057 }
|
|
jbe@0
|
2058 }
|
|
jbe@0
|
2059 lua_pushnumber(L, oldval.it_value.tv_sec + 1e-6 * oldval.it_value.tv_usec);
|
|
jbe@0
|
2060 return 1;
|
|
jbe@0
|
2061 }
|
|
jbe@0
|
2062
|
|
jbe@0
|
2063 #define moonbr_listen_init_pool_forkoption(luaname, cname, defval) { \
|
|
jbe@0
|
2064 lua_getfield(L, 2, luaname); \
|
|
jbe@0
|
2065 pool->cname = lua_isnil(L, -1) ? (defval) : moonbr_lua_tonatural(L, -1); \
|
|
jbe@0
|
2066 } while(0)
|
|
jbe@0
|
2067
|
|
jbe@0
|
2068 #define moonbr_listen_init_pool_timeoption(luaname, cname, defval, defvalu) ( \
|
|
jbe@0
|
2069 lua_getfield(L, 2, luaname), \
|
|
jbe@0
|
2070 lua_isnil(L, -1) ? ( \
|
|
jbe@0
|
2071 pool->cname.tv_sec = (defval), pool->cname.tv_usec = (defvalu), \
|
|
jbe@0
|
2072 1 \
|
|
jbe@0
|
2073 ) : ( \
|
|
jbe@0
|
2074 (lua_isboolean(L, -1) && !lua_toboolean(L, -1)) ? ( \
|
|
jbe@0
|
2075 pool->cname.tv_sec = 0, pool->cname.tv_usec = 0, \
|
|
jbe@0
|
2076 1 \
|
|
jbe@0
|
2077 ) : ( \
|
|
jbe@0
|
2078 moonbr_lua_totimeval(L, -1, &pool->cname) \
|
|
jbe@0
|
2079 ) \
|
|
jbe@0
|
2080 ) \
|
|
jbe@0
|
2081 )
|
|
jbe@0
|
2082
|
|
jbe@0
|
2083 static int moonbr_listen_init_pool(lua_State *L) {
|
|
jbe@0
|
2084 struct moonbr_pool *pool;
|
|
jbe@0
|
2085 const char *proto;
|
|
jbe@0
|
2086 int i;
|
|
jbe@0
|
2087 pool = lua_touserdata(L, 1);
|
|
jbe@0
|
2088 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
2089 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
2090 lua_settop(L, 2);
|
|
jbe@3
|
2091 #if LUA_VERSION_NUM >= 503
|
|
jbe@3
|
2092 lua_geti(L, 2, i+1);
|
|
jbe@3
|
2093 #else
|
|
jbe@0
|
2094 lua_pushinteger(L, i+1);
|
|
jbe@0
|
2095 lua_gettable(L, 2);
|
|
jbe@3
|
2096 #endif
|
|
jbe@0
|
2097 lua_getfield(L, 3, "proto");
|
|
jbe@0
|
2098 proto = lua_tostring(L, -1);
|
|
jbe@0
|
2099 if (proto && !strcmp(proto, "interval")) {
|
|
jbe@0
|
2100 listener->proto = MOONBR_PROTO_INTERVAL;
|
|
jbe@0
|
2101 lua_getfield(L, 3, "name");
|
|
jbe@0
|
2102 {
|
|
jbe@0
|
2103 const char *name = lua_tostring(L, -1);
|
|
jbe@0
|
2104 if (name) {
|
|
jbe@0
|
2105 if (asprintf(&listener->proto_specific.interval.name, "%s", name) < 0) {
|
|
jbe@0
|
2106 moonbr_log(LOG_CRIT, "Memory allocation_error");
|
|
jbe@0
|
2107 moonbr_terminate_error();
|
|
jbe@0
|
2108 }
|
|
jbe@0
|
2109 }
|
|
jbe@0
|
2110 }
|
|
jbe@0
|
2111 lua_getfield(L, 3, "delay");
|
|
jbe@0
|
2112 if (
|
|
jbe@0
|
2113 !moonbr_lua_totimeval(L, -1, &listener->proto_specific.interval.delay) ||
|
|
jbe@0
|
2114 !timerisset(&listener->proto_specific.interval.delay)
|
|
jbe@0
|
2115 ) {
|
|
jbe@0
|
2116 luaL_error(L, "No valid interval delay specified; use listen{{proto=\"interval\", delay=...}, ...}");
|
|
jbe@0
|
2117 }
|
|
jbe@0
|
2118 lua_getfield(L, 3, "strict");
|
|
jbe@0
|
2119 if (!lua_isnil(L, -1)) {
|
|
jbe@0
|
2120 if (lua_isboolean(L, -1)) {
|
|
jbe@0
|
2121 if (lua_toboolean(L, -1)) listener->proto_specific.interval.strict = 1;
|
|
jbe@0
|
2122 } else {
|
|
jbe@0
|
2123 luaL_error(L, "Option \"strict\" must be a boolean if set; use listen{{proto=\"interval\", strict=true, ...}, ...}");
|
|
jbe@0
|
2124 }
|
|
jbe@0
|
2125 }
|
|
jbe@0
|
2126 } else if (proto && !strcmp(proto, "local")) {
|
|
jbe@0
|
2127 listener->proto = MOONBR_PROTO_LOCAL;
|
|
jbe@0
|
2128 lua_getfield(L, 3, "path");
|
|
jbe@0
|
2129 {
|
|
jbe@0
|
2130 const char *path = lua_tostring(L, -1);
|
|
jbe@0
|
2131 if (!path) {
|
|
jbe@0
|
2132 luaL_error(L, "No valid path specified for local socket; use listen{{proto=\"local\", path=...}, ...}");
|
|
jbe@0
|
2133 }
|
|
jbe@0
|
2134 if (asprintf(&listener->proto_specific.local.path, "%s", path) < 0) {
|
|
jbe@0
|
2135 moonbr_log(LOG_CRIT, "Memory allocation_error");
|
|
jbe@0
|
2136 moonbr_terminate_error();
|
|
jbe@0
|
2137 }
|
|
jbe@0
|
2138 }
|
|
jbe@0
|
2139 } else if (proto && !strcmp(proto, "tcp6")) {
|
|
jbe@0
|
2140 listener->proto = MOONBR_PROTO_TCP6;
|
|
jbe@0
|
2141 lua_getfield(L, 3, "port");
|
|
jbe@0
|
2142 listener->proto_specific.tcp.port = lua_tointeger(L, -1);
|
|
jbe@0
|
2143 if (
|
|
jbe@0
|
2144 listener->proto_specific.tcp.port < 1 ||
|
|
jbe@0
|
2145 listener->proto_specific.tcp.port > 65535
|
|
jbe@0
|
2146 ) {
|
|
jbe@0
|
2147 luaL_error(L, "No valid port number specified; use listen{{proto=\"tcp6\", port=...}, ...}");
|
|
jbe@0
|
2148 }
|
|
jbe@0
|
2149 lua_getfield(L, 3, "localhost");
|
|
jbe@0
|
2150 if (!lua_isnil(L, -1)) {
|
|
jbe@0
|
2151 if (lua_isboolean(L, -1)) {
|
|
jbe@0
|
2152 if (lua_toboolean(L, -1)) listener->proto_specific.tcp.localhost_only = 1;
|
|
jbe@0
|
2153 } else {
|
|
jbe@0
|
2154 luaL_error(L, "Option \"localhost\" must be a boolean if set; use listen{{proto=\"tcp6\", localhost=true, ...}, ...}");
|
|
jbe@0
|
2155 }
|
|
jbe@0
|
2156 }
|
|
jbe@0
|
2157 } else if (proto && !strcmp(proto, "tcp4")) {
|
|
jbe@0
|
2158 listener->proto = MOONBR_PROTO_TCP4;
|
|
jbe@0
|
2159 lua_getfield(L, 3, "port");
|
|
jbe@0
|
2160 listener->proto_specific.tcp.port = lua_tointeger(L, -1);
|
|
jbe@0
|
2161 if (
|
|
jbe@0
|
2162 listener->proto_specific.tcp.port < 1 ||
|
|
jbe@0
|
2163 listener->proto_specific.tcp.port > 65535
|
|
jbe@0
|
2164 ) {
|
|
jbe@0
|
2165 luaL_error(L, "No valid port number specified; use listen{{proto=\"tcp4\", port=...}, ...}");
|
|
jbe@0
|
2166 }
|
|
jbe@0
|
2167 lua_getfield(L, 3, "localhost");
|
|
jbe@0
|
2168 if (!lua_isnil(L, -1)) {
|
|
jbe@0
|
2169 if (lua_isboolean(L, -1)) {
|
|
jbe@0
|
2170 if (lua_toboolean(L, -1)) listener->proto_specific.tcp.localhost_only = 1;
|
|
jbe@0
|
2171 } else {
|
|
jbe@0
|
2172 luaL_error(L, "Option \"localhost\" must be a boolean if set; use listen{{proto=\"tcp4\", localhost=true, ...}, ...}");
|
|
jbe@0
|
2173 }
|
|
jbe@0
|
2174 }
|
|
jbe@0
|
2175 }
|
|
jbe@0
|
2176 }
|
|
jbe@0
|
2177 lua_settop(L, 2);
|
|
jbe@0
|
2178 moonbr_listen_init_pool_forkoption("pre_fork", pre_fork, 1);
|
|
jbe@0
|
2179 moonbr_listen_init_pool_forkoption("min_fork", min_fork, pool->pre_fork > 2 ? pool->pre_fork : 2);
|
|
jbe@0
|
2180 moonbr_listen_init_pool_forkoption("max_fork", max_fork, pool->min_fork > 16 ? pool->min_fork : 16);
|
|
jbe@61
|
2181 if (!moonbr_listen_init_pool_timeoption("fork_delay", fork_delay, 0, 250000)) {
|
|
jbe@0
|
2182 luaL_error(L, "Option \"fork_delay\" is expected to be a non-negative number");
|
|
jbe@0
|
2183 }
|
|
jbe@0
|
2184 if (!moonbr_listen_init_pool_timeoption("fork_error_delay", fork_error_delay, 2, 0)) {
|
|
jbe@0
|
2185 luaL_error(L, "Option \"fork_error_delay\" is expected to be a non-negative number");
|
|
jbe@0
|
2186 }
|
|
jbe@0
|
2187 if (!moonbr_listen_init_pool_timeoption("exit_delay", exit_delay, 60, 0)) {
|
|
jbe@0
|
2188 luaL_error(L, "Option \"exit_delay\" is expected to be a non-negative number");
|
|
jbe@0
|
2189 }
|
|
jbe@0
|
2190 if (timercmp(&pool->fork_error_delay, &pool->fork_delay, <)) {
|
|
jbe@0
|
2191 pool->fork_error_delay = pool->fork_delay;
|
|
jbe@0
|
2192 }
|
|
jbe@0
|
2193 if (!moonbr_listen_init_pool_timeoption("idle_timeout", idle_timeout, 0, 0)) {
|
|
jbe@0
|
2194 luaL_error(L, "Option \"idle_timeout\" is expected to be a non-negative number");
|
|
jbe@0
|
2195 }
|
|
jbe@0
|
2196 lua_getfield(L, 2, "memory_limit");
|
|
jbe@0
|
2197 if (!lua_isnil(L, -1)) {
|
|
jbe@0
|
2198 int isnum;
|
|
jbe@0
|
2199 lua_Number n;
|
|
jbe@0
|
2200 n = lua_tonumberx(L, -1, &isnum);
|
|
jbe@0
|
2201 if (n < 0 || !isnum) {
|
|
jbe@0
|
2202 luaL_error(L, "Option \"memory_limit\" is expected to be a non-negative number");
|
|
jbe@0
|
2203 }
|
|
jbe@0
|
2204 pool->memory_limit = n;
|
|
jbe@0
|
2205 }
|
|
jbe@0
|
2206 lua_settop(L, 2);
|
|
jbe@0
|
2207 lua_getfield(L, 2, "prepare");
|
|
jbe@0
|
2208 if (!lua_isnil(L, -1) && !lua_isfunction(L, -1)) {
|
|
jbe@0
|
2209 luaL_error(L, "Option \"prepare\" must be nil or a function");
|
|
jbe@0
|
2210 }
|
|
jbe@0
|
2211 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_prepare_func(pool));
|
|
jbe@0
|
2212 lua_getfield(L, 2, "connect");
|
|
jbe@0
|
2213 if (!lua_isfunction(L, -1)) {
|
|
jbe@0
|
2214 luaL_error(L, "Option \"connect\" must be a function; use listen{{...}, {...}, connect=function(socket) ... end, ...}");
|
|
jbe@0
|
2215 }
|
|
jbe@0
|
2216 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_connect_func(pool));
|
|
jbe@0
|
2217 lua_getfield(L, 2, "finish");
|
|
jbe@0
|
2218 if (!lua_isnil(L, -1) && !lua_isfunction(L, -1)) {
|
|
jbe@0
|
2219 luaL_error(L, "Option \"finish\" must be nil or a function");
|
|
jbe@0
|
2220 }
|
|
jbe@0
|
2221 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_finish_func(pool));
|
|
jbe@0
|
2222 return 0;
|
|
jbe@0
|
2223 }
|
|
jbe@0
|
2224
|
|
jbe@0
|
2225 static int moonbr_listen(lua_State *L) {
|
|
jbe@0
|
2226 struct moonbr_pool *pool;
|
|
jbe@0
|
2227 lua_Integer listener_count;
|
|
jbe@0
|
2228 if (moonbr_booted) luaL_error(L, "Moonbridge bootup is already complete");
|
|
jbe@0
|
2229 luaL_checktype(L, 1, LUA_TTABLE);
|
|
jbe@0
|
2230 listener_count = luaL_len(L, 1);
|
|
jbe@0
|
2231 if (!listener_count) luaL_error(L, "No listen ports specified; use listen{{proto=..., port=...},...}");
|
|
jbe@0
|
2232 if (listener_count > 100) luaL_error(L, "Too many listeners");
|
|
jbe@0
|
2233 pool = moonbr_create_pool(listener_count);
|
|
jbe@0
|
2234 lua_pushcfunction(L, moonbr_listen_init_pool);
|
|
jbe@0
|
2235 lua_pushlightuserdata(L, pool);
|
|
jbe@0
|
2236 lua_pushvalue(L, 1);
|
|
jbe@0
|
2237 if (lua_pcall(L, 2, 0, 0)) goto moonbr_listen_error;
|
|
jbe@0
|
2238 {
|
|
jbe@0
|
2239 int i;
|
|
jbe@0
|
2240 i = moonbr_start_pool(pool);
|
|
jbe@0
|
2241 if (i >= 0) {
|
|
jbe@0
|
2242 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
2243 switch (listener->proto) {
|
|
jbe@0
|
2244 case MOONBR_PROTO_INTERVAL:
|
|
jbe@0
|
2245 lua_pushfstring(L, "Could not initialize listener #%d (proto=\"interval\"): %s", i+1, strerror(errno));
|
|
jbe@0
|
2246 break;
|
|
jbe@0
|
2247 case MOONBR_PROTO_LOCAL:
|
|
jbe@0
|
2248 lua_pushfstring(L, "Could not initialize listener #%d (proto=\"local\", path=\"%s\"): %s", i+1, listener->proto_specific.local.path, strerror(errno));
|
|
jbe@0
|
2249 break;
|
|
jbe@0
|
2250 case MOONBR_PROTO_TCP6:
|
|
jbe@0
|
2251 lua_pushfstring(L, "Could not initialize listener #%d (proto=\"tcp6\", port=%d): %s", i+1, listener->proto_specific.tcp.port, strerror(errno));
|
|
jbe@0
|
2252 break;
|
|
jbe@0
|
2253 case MOONBR_PROTO_TCP4:
|
|
jbe@0
|
2254 lua_pushfstring(L, "Could not initialize listener #%d (proto=\"tcp4\", port=%d): %s", i+1, listener->proto_specific.tcp.port, strerror(errno));
|
|
jbe@0
|
2255 break;
|
|
jbe@0
|
2256 default:
|
|
jbe@0
|
2257 moonbr_log(LOG_ERR, "Internal error (should not happen): Unexpected value in listener.proto field");
|
|
jbe@0
|
2258 moonbr_terminate_error();
|
|
jbe@0
|
2259 }
|
|
jbe@0
|
2260 goto moonbr_listen_error;
|
|
jbe@0
|
2261 }
|
|
jbe@0
|
2262 }
|
|
jbe@0
|
2263 return 0;
|
|
jbe@0
|
2264 moonbr_listen_error:
|
|
jbe@0
|
2265 moonbr_destroy_pool(pool);
|
|
jbe@0
|
2266 lua_pushnil(L);
|
|
jbe@0
|
2267 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_prepare_func(pool));
|
|
jbe@0
|
2268 lua_pushnil(L);
|
|
jbe@0
|
2269 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_connect_func(pool));
|
|
jbe@0
|
2270 lua_pushnil(L);
|
|
jbe@0
|
2271 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_finish_func(pool));
|
|
jbe@0
|
2272 lua_error(L);
|
|
jbe@17
|
2273 return 0; /* avoid compiler warning */
|
|
jbe@0
|
2274 }
|
|
jbe@0
|
2275
|
|
jbe@0
|
2276
|
|
jbe@9
|
2277 /*** Function to modify Lua's library path and/or cpath ***/
|
|
jbe@9
|
2278
|
|
jbe@9
|
2279 #if defined(MOONBR_LUA_PATH) || defined(MOONBR_LUA_CPATH)
|
|
jbe@9
|
2280 static void moonbr_modify_path(lua_State *L, char *key, char *value) {
|
|
jbe@9
|
2281 int stackbase;
|
|
jbe@9
|
2282 stackbase = lua_gettop(L);
|
|
jbe@9
|
2283 lua_getglobal(L, "package");
|
|
jbe@9
|
2284 lua_getfield(L, stackbase+1, key);
|
|
jbe@9
|
2285 {
|
|
jbe@9
|
2286 const char *current_str;
|
|
jbe@9
|
2287 size_t current_strlen;
|
|
jbe@9
|
2288 luaL_Buffer buf;
|
|
jbe@9
|
2289 current_str = lua_tolstring(L, stackbase+2, ¤t_strlen);
|
|
jbe@9
|
2290 luaL_buffinit(L, &buf);
|
|
jbe@9
|
2291 if (current_str) {
|
|
jbe@9
|
2292 lua_pushvalue(L, stackbase+2);
|
|
jbe@9
|
2293 luaL_addvalue(&buf);
|
|
jbe@9
|
2294 if (current_strlen && current_str[current_strlen-1] != ';') {
|
|
jbe@9
|
2295 luaL_addchar(&buf, ';');
|
|
jbe@9
|
2296 }
|
|
jbe@9
|
2297 }
|
|
jbe@9
|
2298 luaL_addstring(&buf, value);
|
|
jbe@9
|
2299 luaL_pushresult(&buf);
|
|
jbe@9
|
2300 }
|
|
jbe@9
|
2301 lua_setfield(L, stackbase+1, key);
|
|
jbe@9
|
2302 lua_settop(L, stackbase);
|
|
jbe@9
|
2303 }
|
|
jbe@9
|
2304 #endif
|
|
jbe@9
|
2305
|
|
jbe@9
|
2306
|
|
jbe@0
|
2307 /*** Main function and command line invokation ***/
|
|
jbe@0
|
2308
|
|
jbe@0
|
2309 static void moonbr_usage(int err, const char *cmd) {
|
|
jbe@0
|
2310 FILE *out;
|
|
jbe@0
|
2311 out = err ? stderr : stdout;
|
|
jbe@0
|
2312 if (!cmd) cmd = "moonbridge";
|
|
jbe@0
|
2313 fprintf(out, "Get this help message: %s {-h|--help}\n", cmd);
|
|
jbe@0
|
2314 fprintf(out, "Usage: %s \\\n", cmd);
|
|
jbe@0
|
2315 fprintf(out, " [-b|--background] \\\n");
|
|
jbe@0
|
2316 fprintf(out, " [-d|--debug] \\\n");
|
|
jbe@0
|
2317 fprintf(out, " [-f|--logfacility {DAEMON|USER|0|1|...|7}] \\\n");
|
|
jbe@0
|
2318 fprintf(out, " [-i|--logident <syslog ident> \\\n");
|
|
jbe@0
|
2319 fprintf(out, " [-l|--logfile <logfile>] \\\n");
|
|
jbe@0
|
2320 fprintf(out, " [-p|--pidfile <pidfile>] \\\n");
|
|
jbe@0
|
2321 fprintf(out, " [-s|--stats] \\\n");
|
|
jbe@2
|
2322 fprintf(out, " -- <Lua script> [<cmdline options for Lua script>]\n");
|
|
jbe@0
|
2323 exit(err);
|
|
jbe@0
|
2324 }
|
|
jbe@0
|
2325
|
|
jbe@0
|
2326 #define moonbr_usage_error() moonbr_usage(MOONBR_EXITCODE_CMDLINEERROR, argc ? argv[0] : NULL)
|
|
jbe@0
|
2327
|
|
jbe@0
|
2328 int main(int argc, char **argv) {
|
|
jbe@0
|
2329 {
|
|
jbe@0
|
2330 int daemonize = 0;
|
|
jbe@0
|
2331 int log_facility = LOG_USER;
|
|
jbe@0
|
2332 const char *log_ident = "moonbridge";
|
|
jbe@0
|
2333 const char *log_filename = NULL;
|
|
jbe@0
|
2334 const char *pid_filename = NULL;
|
|
jbe@0
|
2335 int option;
|
|
jbe@0
|
2336 struct option longopts[] = {
|
|
jbe@0
|
2337 { "background", no_argument, NULL, 'b' },
|
|
jbe@0
|
2338 { "debug", no_argument, NULL, 'd' },
|
|
jbe@0
|
2339 { "logfacility", required_argument, NULL, 'f' },
|
|
jbe@0
|
2340 { "help", no_argument, NULL, 'h' },
|
|
jbe@0
|
2341 { "logident", required_argument, NULL, 'i' },
|
|
jbe@0
|
2342 { "logfile", required_argument, NULL, 'l' },
|
|
jbe@0
|
2343 { "pidfile", required_argument, NULL, 'p' },
|
|
jbe@0
|
2344 { "stats", no_argument, NULL, 's' }
|
|
jbe@0
|
2345 };
|
|
jbe@0
|
2346 while ((option = getopt_long(argc, argv, "bdf:hi:l:p:s", longopts, NULL)) != -1) {
|
|
jbe@0
|
2347 switch (option) {
|
|
jbe@0
|
2348 case 'b':
|
|
jbe@0
|
2349 daemonize = 1;
|
|
jbe@0
|
2350 break;
|
|
jbe@0
|
2351 case 'd':
|
|
jbe@0
|
2352 moonbr_debug = 1;
|
|
jbe@0
|
2353 moonbr_stat = 1;
|
|
jbe@0
|
2354 break;
|
|
jbe@0
|
2355 case 'f':
|
|
jbe@0
|
2356 if (!strcmp(optarg, "DAEMON")) {
|
|
jbe@0
|
2357 log_facility = LOG_DAEMON;
|
|
jbe@0
|
2358 } else if (!strcmp(optarg, "USER")) {
|
|
jbe@0
|
2359 log_facility = LOG_USER;
|
|
jbe@0
|
2360 } else if (!strcmp(optarg, "0")) {
|
|
jbe@0
|
2361 log_facility = LOG_LOCAL0;
|
|
jbe@0
|
2362 } else if (!strcmp(optarg, "1")) {
|
|
jbe@0
|
2363 log_facility = LOG_LOCAL1;
|
|
jbe@0
|
2364 } else if (!strcmp(optarg, "2")) {
|
|
jbe@0
|
2365 log_facility = LOG_LOCAL2;
|
|
jbe@0
|
2366 } else if (!strcmp(optarg, "3")) {
|
|
jbe@0
|
2367 log_facility = LOG_LOCAL3;
|
|
jbe@0
|
2368 } else if (!strcmp(optarg, "4")) {
|
|
jbe@0
|
2369 log_facility = LOG_LOCAL4;
|
|
jbe@0
|
2370 } else if (!strcmp(optarg, "5")) {
|
|
jbe@0
|
2371 log_facility = LOG_LOCAL5;
|
|
jbe@0
|
2372 } else if (!strcmp(optarg, "6")) {
|
|
jbe@0
|
2373 log_facility = LOG_LOCAL6;
|
|
jbe@0
|
2374 } else if (!strcmp(optarg, "7")) {
|
|
jbe@0
|
2375 log_facility = LOG_LOCAL7;
|
|
jbe@0
|
2376 } else {
|
|
jbe@0
|
2377 moonbr_usage_error();
|
|
jbe@0
|
2378 }
|
|
jbe@0
|
2379 moonbr_use_syslog = 1;
|
|
jbe@0
|
2380 break;
|
|
jbe@0
|
2381 case 'h':
|
|
jbe@0
|
2382 moonbr_usage(MOONBR_EXITCODE_GRACEFUL, argv[0]);
|
|
jbe@0
|
2383 break;
|
|
jbe@0
|
2384 case 'i':
|
|
jbe@0
|
2385 log_ident = optarg;
|
|
jbe@0
|
2386 moonbr_use_syslog = 1;
|
|
jbe@0
|
2387 break;
|
|
jbe@0
|
2388 case 'l':
|
|
jbe@0
|
2389 log_filename = optarg;
|
|
jbe@0
|
2390 break;
|
|
jbe@0
|
2391 case 'p':
|
|
jbe@0
|
2392 pid_filename = optarg;
|
|
jbe@0
|
2393 break;
|
|
jbe@0
|
2394 case 's':
|
|
jbe@0
|
2395 moonbr_stat = 1;
|
|
jbe@0
|
2396 break;
|
|
jbe@0
|
2397 default:
|
|
jbe@0
|
2398 moonbr_usage_error();
|
|
jbe@0
|
2399 }
|
|
jbe@0
|
2400 }
|
|
jbe@2
|
2401 if (argc - optind < 1) moonbr_usage_error();
|
|
jbe@0
|
2402 if (pid_filename) {
|
|
jbe@0
|
2403 pid_t otherpid;
|
|
jbe@0
|
2404 while ((moonbr_pidfh = pidfile_open(pid_filename, 0644, &otherpid)) == NULL) {
|
|
jbe@0
|
2405 if (errno == EEXIST) {
|
|
jbe@0
|
2406 if (otherpid == -1) {
|
|
jbe@0
|
2407 fprintf(stderr, "PID file \"%s\" is already locked\n", pid_filename);
|
|
jbe@0
|
2408 } else {
|
|
jbe@0
|
2409 fprintf(stderr, "PID file \"%s\" is already locked by process with PID: %i\n", pid_filename, (int)otherpid);
|
|
jbe@0
|
2410 }
|
|
jbe@0
|
2411 exit(MOONBR_EXITCODE_ALREADYRUNNING);
|
|
jbe@0
|
2412 } else if (errno != EINTR) {
|
|
jbe@0
|
2413 fprintf(stderr, "Could not write PID file \"%s\": %s\n", pid_filename, strerror(errno));
|
|
jbe@0
|
2414 exit(MOONBR_EXITCODE_STARTUPERROR);
|
|
jbe@0
|
2415 }
|
|
jbe@0
|
2416 }
|
|
jbe@0
|
2417 }
|
|
jbe@0
|
2418 if (log_filename) {
|
|
jbe@0
|
2419 int logfd;
|
|
jbe@0
|
2420 while (
|
|
jbe@0
|
2421 ( logfd = flopen(
|
|
jbe@0
|
2422 log_filename,
|
|
jbe@0
|
2423 O_WRONLY|O_NONBLOCK|O_CREAT|O_APPEND|O_CLOEXEC,
|
|
jbe@0
|
2424 0640
|
|
jbe@0
|
2425 )
|
|
jbe@0
|
2426 ) < 0
|
|
jbe@0
|
2427 ) {
|
|
jbe@0
|
2428 if (errno == EWOULDBLOCK) {
|
|
jbe@0
|
2429 fprintf(stderr, "Logfile \"%s\" is locked\n", log_filename);
|
|
jbe@0
|
2430 exit(MOONBR_EXITCODE_ALREADYRUNNING);
|
|
jbe@0
|
2431 } else if (errno != EINTR) {
|
|
jbe@0
|
2432 fprintf(stderr, "Could not open logfile \"%s\": %s\n", log_filename, strerror(errno));
|
|
jbe@0
|
2433 exit(MOONBR_EXITCODE_STARTUPERROR);
|
|
jbe@0
|
2434 }
|
|
jbe@0
|
2435 }
|
|
jbe@0
|
2436 moonbr_logfile = fdopen(logfd, "a");
|
|
jbe@0
|
2437 if (!moonbr_logfile) {
|
|
jbe@0
|
2438 fprintf(stderr, "Could not open write stream to logfile \"%s\": %s\n", log_filename, strerror(errno));
|
|
jbe@0
|
2439 exit(MOONBR_EXITCODE_STARTUPERROR);
|
|
jbe@0
|
2440 }
|
|
jbe@0
|
2441 }
|
|
jbe@0
|
2442 if (daemonize == 0 && !moonbr_logfile) moonbr_logfile = stderr;
|
|
jbe@0
|
2443 if (moonbr_logfile) setlinebuf(moonbr_logfile);
|
|
jbe@0
|
2444 else moonbr_use_syslog = 1;
|
|
jbe@0
|
2445 if (moonbr_use_syslog) openlog(log_ident, LOG_NDELAY | LOG_PID, log_facility);
|
|
jbe@0
|
2446 if (daemonize) {
|
|
jbe@0
|
2447 if (daemon(1, 0)) {
|
|
jbe@0
|
2448 moonbr_log(LOG_ERR, "Could not daemonize moonbridge process");
|
|
jbe@0
|
2449 moonbr_terminate_error();
|
|
jbe@0
|
2450 }
|
|
jbe@0
|
2451 }
|
|
jbe@0
|
2452 }
|
|
jbe@0
|
2453 moonbr_log(LOG_NOTICE, "Starting moonbridge server");
|
|
jbe@0
|
2454 if (moonbr_pidfh && pidfile_write(moonbr_pidfh)) {
|
|
jbe@0
|
2455 moonbr_log(LOG_ERR, "Could not write pidfile (after locking)");
|
|
jbe@0
|
2456 }
|
|
jbe@0
|
2457 {
|
|
jbe@0
|
2458 lua_State *L;
|
|
jbe@0
|
2459 L = lua_newstate(moonbr_alloc, NULL);
|
|
jbe@0
|
2460 if (!L) {
|
|
jbe@0
|
2461 moonbr_log(LOG_CRIT, "Could not initialize Lua state");
|
|
jbe@0
|
2462 moonbr_terminate_error();
|
|
jbe@0
|
2463 }
|
|
jbe@0
|
2464 lua_atpanic(L, moonbr_lua_panic);
|
|
jbe@58
|
2465 lua_pushliteral(L, MOONBR_VERSION_STRING);
|
|
jbe@58
|
2466 lua_setglobal(L, "_MOONBRIDGE_VERSION");
|
|
jbe@0
|
2467 luaL_openlibs(L);
|
|
jbe@89
|
2468 luaL_requiref(L, "moonbridge_io", luaopen_moonbridge_io, 1);
|
|
jbe@89
|
2469 lua_pop(L, 1);
|
|
jbe@8
|
2470 #ifdef MOONBR_LUA_PATH
|
|
jbe@9
|
2471 moonbr_modify_path(L, "path", MOONBR_LUA_PATH);
|
|
jbe@9
|
2472 #endif
|
|
jbe@9
|
2473 #ifdef MOONBR_LUA_CPATH
|
|
jbe@9
|
2474 moonbr_modify_path(L, "cpath", MOONBR_LUA_CPATH);
|
|
jbe@8
|
2475 #endif
|
|
jbe@0
|
2476 if (luaL_newmetatable(L, LUA_FILEHANDLE)) {
|
|
jbe@0
|
2477 moonbr_log(LOG_CRIT, "Lua metatable LUA_FILEHANDLE does not exist");
|
|
jbe@0
|
2478 moonbr_terminate_error();
|
|
jbe@0
|
2479 }
|
|
jbe@0
|
2480 lua_getfield(L, -1, "__index");
|
|
jbe@78
|
2481 lua_pushcfunction(L, moonbr_readuntil);
|
|
jbe@78
|
2482 lua_setfield(L, -2, "readuntil");
|
|
jbe@0
|
2483 lua_pop(L, 2);
|
|
jbe@0
|
2484 lua_pushcfunction(L, moonbr_timeout);
|
|
jbe@0
|
2485 lua_setglobal(L, "timeout");
|
|
jbe@0
|
2486 lua_pushcfunction(L, moonbr_listen);
|
|
jbe@0
|
2487 lua_setglobal(L, "listen");
|
|
jbe@17
|
2488 lua_pushcfunction(L, moonbr_addtraceback); /* on stack position 1 */
|
|
jbe@2
|
2489 moonbr_log(LOG_INFO, "Loading \"%s\"", argv[optind]);
|
|
jbe@2
|
2490 if (luaL_loadfile(L, argv[optind])) {
|
|
jbe@2
|
2491 moonbr_log(LOG_ERR, "Error while loading \"%s\": %s", argv[optind], lua_tostring(L, -1));
|
|
jbe@2
|
2492 moonbr_terminate_error();
|
|
jbe@2
|
2493 }
|
|
jbe@2
|
2494 { int i; for (i=optind+1; i<argc; i++) lua_pushstring(L, argv[i]); }
|
|
jbe@2
|
2495 if (lua_pcall(L, argc-(optind+1), 0, 1)) {
|
|
jbe@2
|
2496 moonbr_log(LOG_ERR, "Error while executing \"%s\": %s", argv[optind], lua_tostring(L, -1));
|
|
jbe@2
|
2497 moonbr_terminate_error();
|
|
jbe@0
|
2498 }
|
|
jbe@6
|
2499 if (!moonbr_first_pool) {
|
|
jbe@6
|
2500 moonbr_log(LOG_WARNING, "No listener initialized.");
|
|
jbe@6
|
2501 moonbr_terminate_error();
|
|
jbe@6
|
2502 }
|
|
jbe@0
|
2503 lua_getglobal(L, "listen");
|
|
jbe@0
|
2504 lua_pushcfunction(L, moonbr_listen);
|
|
jbe@0
|
2505 if (lua_compare(L, -2, -1, LUA_OPEQ)) {
|
|
jbe@0
|
2506 lua_pushnil(L);
|
|
jbe@0
|
2507 lua_setglobal(L, "listen");
|
|
jbe@0
|
2508 }
|
|
jbe@0
|
2509 lua_settop(L, 1);
|
|
jbe@56
|
2510 lua_gc(L, LUA_GCCOLLECT, 0); // collect garbage before forking later
|
|
jbe@0
|
2511 moonbr_run(L);
|
|
jbe@0
|
2512 }
|
|
jbe@0
|
2513 return 0;
|
|
jbe@0
|
2514 }
|
|
jbe@0
|
2515
|