src/server/daemon/main.c

Wed, 26 Oct 2016 15:53:56 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Wed, 26 Oct 2016 15:53:56 +0200
changeset 118
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parent 115
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child 125
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permissions
-rw-r--r--

adds minimal cgi implementation

some env vars still missing
request body not supported yet

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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
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37 #include "../util/pool.h"
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38 #include "../public/nsapi.h"
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39 #include "../util/plist.h"
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40 #include "../util/date.h"
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41
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42 #include "webserver.h"
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43 #include "log.h"
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44 #include "httprequest.h"
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45 #include "httplistener.h"
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46
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47 #include "configmanager.h"
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48
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49 static int std_pipe_fds[2];
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50 static WSBool is_daemon;
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51
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52 void test() {
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53 time_t t = time(NULL);
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54 pool_handle_t *pool = pool_create();
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55 sstr_t date = date_format_http(t, pool);
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56 printf("%s\n", date.ptr);
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57 }
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58
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59
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60 WSBool main_is_daemon(void) {
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61 return is_daemon;
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62 }
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63
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64 /*
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65 * SIGUSR1: reload the configuration files
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66 */
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67 void sig_usr1_reload(int sig) {
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68 log_ereport(LOG_INFORM, "sig reload");
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69
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70 if(cfgmgr_load_config(NULL) != 0) {
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71 log_ereport(LOG_FAILURE, "cannot reload config");
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72 }
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73 // start newly created listeners
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74 start_all_listener();
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75
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76 signal(SIGUSR1, sig_usr1_reload);
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77 }
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78
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79 /*
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80 * SIGTERM: stop the server
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81 */
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82 void sig_term(int sig) {
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83 webserver_shutdown();
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84 exit(EXIT_SUCCESS);
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85 }
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86
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87 void* log_pipe_thread(void *data) {
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88 //FILE *log_out = fopen("log.txt", "a");
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89
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90 char buf[1024];
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91 ssize_t r;
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92 while((r = read(std_pipe_fds[0], buf, 1024)) > 0) {
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93 //fwrite(buf, 1, r, log_out);
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94 //fflush(log_out);
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95 }
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96
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97 //fclose(log_out);
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98
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99 return NULL;
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100 }
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101
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102 int main(int argc, char **argv) {
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103 //test();
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104
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105 /* if the -c parameter is specified, we don't create a daemon */
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106 is_daemon = 1;
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107 for(int i=0;i<argc;i++) {
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108 char *p = argv[i];
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109 if(p[0] == '-' && p[1] == 'c') {
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110 is_daemon = 0;
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111 break;
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112 }
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113 }
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114 if(is_daemon) {
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115 /* create daemon */
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116 pid_t pid = fork();
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117 if(pid < 0) {
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118 return EXIT_FAILURE;
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119 } else if(pid > 0) {
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120 return EXIT_SUCCESS;
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121 }
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122
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123 if(setsid() < 0) {
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124 fprintf(stderr, "setsid failed\n");
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125 return EXIT_FAILURE;
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126 }
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127 printf("start daemon\n");
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128
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129 for(int i=0;i<3;i++) {
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130 close(i);
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131 }
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132
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133 /* stdio redirection */
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134 /* create pipes */
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135 if(pipe(std_pipe_fds) != 0) {
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136 perror("pipe");
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137 return EXIT_FAILURE;
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138 }
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139 //FILE *ws_out = fdopen(std_pipe_fds[1], "w");
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140 //*stdout = *ws_out;
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141 //*stderr = *ws_out;
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142 //dup2(std_pipe_fds[1], 1);
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143 //dup2(std_pipe_fds[1], 2);
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144
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145 pthread_t tid;
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146 pthread_create(&tid, NULL, log_pipe_thread, NULL);
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147 }
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148
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149 pool_init(NULL, NULL, NULL);
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150
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151 /* add signal handler */
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152 signal(SIGUSR1, sig_usr1_reload);
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153 signal(SIGTERM, sig_term);
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154 signal(SIGINT, sig_term);
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155
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156 /* start webserver */
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157 int status;
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158 status = webserver_init();
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159 if(status != 0) {
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160 fprintf(stderr, "Cannot initialize server!\n");
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161 return EXIT_FAILURE;
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162 }
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163
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164 status = webserver_run();
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165 if(status != 0) {
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166 fprintf(stderr, "Cannot run server!\n");
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167 return EXIT_FAILURE;
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168 }
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169
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170 /* TODO: join threads (or not?) */
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171 while(1) {
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172 if(is_daemon) {
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173 fflush(stdout);
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174 fflush(stderr);
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175 }
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176 sleep(10000);
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177 if(0) {
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178 break;
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179 }
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180 }
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181
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182 return EXIT_SUCCESS;
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183 }
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184

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