src/server/daemon/main.c

Sun, 20 Nov 2022 12:43:44 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 20 Nov 2022 12:43:44 +0100
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parent 434
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child 443
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permissions
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replace linkedlist with arraylist in the expression parser

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2013 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29
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30 #include <stdio.h>
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31 #include <stdlib.h>
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32 #include <unistd.h>
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33 #include <signal.h>
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34 #include <errno.h>
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35 #include <pthread.h>
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36 #include <fcntl.h>
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37 #include <poll.h>
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38
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39 #include "../util/pool.h"
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40 #include "../public/nsapi.h"
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41 #include "../util/plist.h"
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42 #include "../util/date.h"
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43
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44 #include <cx/string.h>
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45
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46 #include "webserver.h"
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47 #include "log.h"
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48 #include "httprequest.h"
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49 #include "httplistener.h"
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50 #include "srvctrl.h"
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51
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52 #include "configmanager.h"
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53
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54 #define LOG_THREAD_STACK_SIZE 32768
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55 #define LOG_THREAD_MAX_POLL_FAILS 10
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56 #define LOG_THREAD_READ_BUF 2048
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57
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58 static int std_out[2];
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59 static int std_err[2];
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60 static WSBool is_daemon;
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61
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62 void test() {
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63 time_t t = time(NULL);
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64 pool_handle_t *pool = pool_create();
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65 cxmutstr date = date_format_http(t, pool);
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66 printf("%s\n", date.ptr);
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67 }
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69
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70 WSBool main_is_daemon(void) {
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71 return is_daemon;
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72 }
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73
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74 /*
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75 * SIGUSR1: reload the configuration files
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76 */
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77 void sig_usr1_reload(int sig) {
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78 log_ereport(LOG_INFORM, "sig reload");
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79
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80 CfgManager mgr;
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81 if(cfgmgr_load_config(&mgr) != 0) {
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82 log_ereport(LOG_FAILURE, "cannot reload server.conf");
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83 } else {
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84 if(cfgmgr_apply_config(&mgr)) {
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85 log_ereport(LOG_FAILURE, "cannot reload config");
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86 }
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87 }
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88
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89 // start newly created listeners
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90 start_all_listener();
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91
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92 signal(SIGUSR1, sig_usr1_reload);
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93 }
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94
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95 /*
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96 * SIGTERM: stop the server
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97 */
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98 void sig_term(int sig) {
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99 webserver_shutdown();
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100 //exit(EXIT_SUCCESS);
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101 }
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102
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103 static void set_pipe_nonblocking(int fd) {
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104 int flags = 0;
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105 flags = fcntl(fd, F_GETFL, 0);
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106 fcntl(fd, F_SETFL, flags & ~O_NONBLOCK);
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107 }
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108
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109 static char log_pipe_readbuf[LOG_THREAD_READ_BUF];
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110 static char log_pipe_stdout_buf[LOG_THREAD_READ_BUF];
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111 static char log_pipe_stderr_buf[LOG_THREAD_READ_BUF];
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112 static size_t log_pipe_stdout_tmp_pos = 0;
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113 static size_t log_pipe_stderr_tmp_pos = 0;
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114
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115 static int log_pipe(const char *name, int fd, char *buf, size_t *pos) {
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116 ssize_t r = read(fd, log_pipe_readbuf, 2);
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117 if(r <= 0) {
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118 return 1;
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119 }
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120
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121 char *tmp = buf;
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122 int tmplen = *pos;
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123
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124 int s = 0;
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125 for(int i=0;i<r;i++) {
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126 if(log_pipe_readbuf[i] == '\n') {
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127 if(tmplen + i-s > 0) {
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128 log_message(name, "%.*s%.*s", tmplen, tmp, i-s, log_pipe_readbuf + s);
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129 }
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130 tmplen = 0;
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131 *pos = 0;
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132 s = i+1;
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133 }
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134 }
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135
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136 int remaining = r - s;
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137 if(tmplen + remaining >= LOG_THREAD_READ_BUF) {
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138 log_message(name, "%.*s%.*s", tmplen, tmp, remaining, log_pipe_readbuf + s);
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139 *pos = 0;
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140 } else if(remaining > 0) {
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141 memcpy(buf + *pos, log_pipe_readbuf + s, remaining);
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142 *pos += remaining;
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143 }
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144
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145 return 0;
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146 }
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147
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148 void* log_pipe_thread(void *data) {
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149 set_pipe_nonblocking(std_out[0]);
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150 set_pipe_nonblocking(std_err[0]);
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151
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152 struct pollfd fds[2];
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153 fds[0].fd = std_out[0];
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154 fds[0].events = POLLIN;
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155 fds[1].fd = std_err[0];
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156 fds[1].events = POLLIN;
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157
434
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158 int poll_fails = 0;
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159 for(;;) {
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160 if(poll(fds, 1, 1000000) < 0) {
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161 if(errno == EINTR) {
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162 continue;
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163 }
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164 log_ereport(LOG_FAILURE, "log thread poll failed: %s", strerror(errno));
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165 if(poll_fails++ > LOG_THREAD_MAX_POLL_FAILS) {
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166 break;
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167 }
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168 }
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169
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170 // check stdout
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171 if(fds[0].revents & POLLIN) {
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172 if(log_pipe("stdout", fds[0].fd, log_pipe_stdout_buf, &log_pipe_stdout_tmp_pos)) {
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173 break;
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174 }
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175 }
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176
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177 // check stderr
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178 if(fds[1].revents & POLLIN) {
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179 if(log_pipe("stderr", fds[0].fd, log_pipe_stderr_buf, &log_pipe_stderr_tmp_pos)) {
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180 break;
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181 }
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182 }
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183 }
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184
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185 log_ereport(LOG_INFORM, "log thread end");
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186
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187 return NULL;
22
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188 }
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189
1
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190 int main(int argc, char **argv) {
47
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191 //test();
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192
434
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193 // if the -c parameter is specified, we don't create a daemon
115
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194 is_daemon = 1;
22
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195 for(int i=0;i<argc;i++) {
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196 char *p = argv[i];
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197 if(p[0] == '-' && p[1] == 'c') {
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198 is_daemon = 0;
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199 break;
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200 }
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201 }
115
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202 if(is_daemon) {
434
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203 // create daemon
22
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204 pid_t pid = fork();
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205 if(pid < 0) {
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206 return EXIT_FAILURE;
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207 } else if(pid > 0) {
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208 return EXIT_SUCCESS;
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209 }
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210
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211 if(setsid() < 0) {
47
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212 fprintf(stderr, "setsid failed\n");
22
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213 return EXIT_FAILURE;
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214 }
47
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215 printf("start daemon\n");
22
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216
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217 for(int i=0;i<3;i++) {
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218 close(i);
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219 }
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220
434
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221 // stdio redirection
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222 // create pipes
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223 if(pipe(std_out) != 0) {
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224 perror("pipe");
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225 return EXIT_FAILURE;
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226 }
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227 if(pipe(std_err) != 0) {
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228 perror("pipe");
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229 return EXIT_FAILURE;
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230 }
434
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231
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diff changeset
232 dup2(std_out[1], 1);
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233 dup2(std_err[1], 2);
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234 close(std_err[1]);
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235
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236 // set log thread stack size
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237 pthread_attr_t tattr;
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238 pthread_attr_init(&tattr);
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239 pthread_attr_setstacksize(&tattr, LOG_THREAD_STACK_SIZE);
22
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240
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241 pthread_t tid;
434
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242 pthread_create(&tid, &tattr, log_pipe_thread, NULL);
22
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243 }
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244
9
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diff changeset
245 pool_init(NULL, NULL, NULL);
434
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246
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247 // add signal handler
22
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248 signal(SIGUSR1, sig_usr1_reload);
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249 signal(SIGTERM, sig_term);
68
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diff changeset
250 signal(SIGINT, sig_term);
125
c913d515be1e adds more error handling
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diff changeset
251
c913d515be1e adds more error handling
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diff changeset
252 struct sigaction act;
146
a9591a91c004 fixes server user init
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diff changeset
253 ZERO(&act, sizeof(struct sigaction));
125
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diff changeset
254 act.sa_handler = SIG_IGN;
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diff changeset
255 sigaction(SIGPIPE, &act, NULL);
1
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256
434
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257 // start webserver
130
198ad9d8cec1 adds ssl protocol configuration
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diff changeset
258 log_ereport(LOG_INFORM, "startup");
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diff changeset
259
1
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260 int status;
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261 status = webserver_init();
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262 if(status != 0) {
415
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diff changeset
263 log_ereport(LOG_FAILURE, "cannot initialize server.");
1
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264 return EXIT_FAILURE;
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265 }
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266
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267 status = webserver_run();
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268 if(status != 0) {
156
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diff changeset
269 log_ereport(LOG_FAILURE, "cannot run server.");
1
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270 return EXIT_FAILURE;
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parents:
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271 }
156
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diff changeset
272
158
77f4f0079428 adds reconfig and shutdown handler to srvctrl
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parents: 156
diff changeset
273 if(srvctrl_wait()) {
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diff changeset
274 return EXIT_FAILURE;
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diff changeset
275 }
156
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diff changeset
276
22
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diff changeset
277 /* TODO: join threads (or not?) */
156
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diff changeset
278 /*
22
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279 while(1) {
115
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diff changeset
280 if(is_daemon) {
22
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281 fflush(stdout);
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282 fflush(stderr);
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diff changeset
283 }
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diff changeset
284 sleep(10000);
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diff changeset
285 if(0) {
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diff changeset
286 break;
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diff changeset
287 }
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288 }
156
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diff changeset
289 */
1
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290
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291 return EXIT_SUCCESS;
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parents:
diff changeset
292 }
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parents:
diff changeset
293

mercurial