src/server/daemon/httplistener.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 129
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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 #include "../public/nsapi.h"
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30
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31 #include <stdio.h>
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32 #include <stdlib.h>
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33 #include <fcntl.h>
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34 #include <sys/shm.h>
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35 #include <sys/types.h>
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36 #include <sys/ipc.h>
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37 #include <sys/socket.h>
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38 #include <sys/file.h>
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39 #include <netinet/in.h>
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40 #include <netdb.h>
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41 #include <stdio.h>
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42 #include <stdlib.h>
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43 #include <fcntl.h>
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44 #include <unistd.h>
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45 #include <strings.h>
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46 #include <stdbool.h>
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47 #include <pthread.h>
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48
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49 #include <ucx/map.h>
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50
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51 #include "../util/atomic.h"
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52 #include "httplistener.h"
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53
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54 #include "session.h"
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55 #include "configmanager.h"
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56 #include "log.h"
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57
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58 UcxMap *listener_map = NULL;
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59
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60 int start_all_listener() {
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61 ServerConfiguration *conf = cfgmgr_get_server_config();
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62 UcxList *ls = conf->listeners;
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63 while(ls) {
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64 HttpListener *listener = ls->data;
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65 http_listener_start(listener);
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66 ls = ls->next;
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67 }
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68
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69 return 0;
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70 }
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71
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72 HttpListener* http_listener_create(ListenerConfig *conf) {
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73 if(listener_map == NULL) {
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74 listener_map = ucx_map_new(16);
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75 }
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76
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77 HttpListener *fl = ucx_map_sstr_get(listener_map, conf->name);
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78 if(fl == NULL) {
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79 return http_listener_new(conf);
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80 }
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81
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82 HttpListener* newls = calloc(1, sizeof(HttpListener));
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83 if(newls == NULL) {
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84 // TODO: error
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85 }
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86
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87 newls->name = conf->name;
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88 newls->cfg = conf->cfg;
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89 newls->nacceptors = conf->nacceptors;
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90 newls->default_vs.vs_name = conf->vs.ptr;
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91 newls->port = fl->port;
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92 newls->server_socket = fl->server_socket;
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93 newls->running = 1;
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94 newls->threadpool = NULL;
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95 newls->ref = 2; // 1 reference is fl->next
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96
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97 newls->session_handler = fl->session_handler; // TODO
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98
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99 // the listener threadpool might be changed
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100 if(conf->threadpool.ptr != NULL) {
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101 newls->threadpool = get_threadpool(conf->threadpool);
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102 }
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103 if(newls->threadpool == NULL) {
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104 newls->threadpool = get_default_threadpool();
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105 }
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106
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107 // create acceptor threads
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108 newls->acceptors = calloc(newls->nacceptors, sizeof(void*));
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109 for (int i=0;i<newls->nacceptors;i++) {
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110 newls->acceptors[i] = acceptor_new(newls);
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111 }
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112
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113 // fl hold one reference of newls
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114 fl->next = newls;
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115
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116
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117 ucx_map_sstr_put(listener_map, newls->name, newls);
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118
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119 for (int i=0;i<newls->nacceptors;i++) {
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120 acceptor_start(newls->acceptors[i]);
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121 }
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122
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123 // check if a restart is required to apply all changes
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124
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125 if(newls->port != conf->port) {
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126 // TODO: log
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127 }
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128
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129 return newls;
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130 }
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131
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132 HttpListener* http_listener_new(ListenerConfig *conf) {
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133 // TODO: remove
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134 if(listener_map == NULL) {
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135 listener_map = ucx_map_new(16);
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136 }
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137
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138 HttpListener *fl = ucx_map_sstr_get(listener_map, conf->name);
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139 if(fl != NULL) {
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140 return fl;
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141 }
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142 // end remove
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143
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144 HttpListener *listener = malloc(sizeof(HttpListener));
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145 listener->running = 0;
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146 listener->cfg = conf->cfg;
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147 listener->name = conf->name;
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148 listener->default_vs.vs_name = conf->vs.ptr;
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149 listener->threadpool = NULL;
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150 if(conf->threadpool.ptr != NULL) {
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151 listener->threadpool = get_threadpool(conf->threadpool);
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152 }
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153 if(listener->threadpool == NULL) {
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154 listener->threadpool = get_default_threadpool();
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155 }
78
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156 //listener->session_handler = create_basic_session_handler();
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157 listener->session_handler = create_event_session_handler();
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158 listener->nacceptors = conf->nacceptors;
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159 listener->port = conf->port;
36
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160 listener->ref = 1;
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161 listener->next = NULL;
106
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162 listener->ssl = NULL;
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163 if(conf->ssl) {
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164 listener->ssl = malloc(sizeof(HttpSSL));
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165
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166 SSL_CTX *ctx = SSL_CTX_new( SSLv23_server_method());
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167 SSL_CTX_set_options(ctx, SSL_OP_SINGLE_DH_USE);
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168
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169 sstr_t file = sstrdup(conf->certfile);
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170 int ret = SSL_CTX_use_certificate_file(ctx, file.ptr, SSL_FILETYPE_PEM);
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171 free(file.ptr);
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172 if(!ret) {
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173 // TODO: cleanup
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174 return NULL;
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175 }
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176
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177 file = sstrdup(conf->privkeyfile);
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178 ret = SSL_CTX_use_PrivateKey_file(ctx, file.ptr, SSL_FILETYPE_PEM);
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179 free(file.ptr);
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180 if(!ret) {
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181 // TODO: cleanup
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182 return NULL;
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183 }
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184
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185 // TODO: chain
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186 listener->ssl->sslctx = ctx;
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187 }
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188
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189
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190 ucx_map_sstr_put(listener_map, listener->name, listener);
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191
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192 struct sockaddr_in servaddr; /* server address */
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193
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194 /* init address structure */
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195 memset(&servaddr, 0, sizeof(servaddr));
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196 servaddr.sin_family = AF_INET;
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197 servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
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198 servaddr.sin_port = htons(conf->port);
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199
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200 /* create socket */
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201 if((listener->server_socket = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
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202 perror("Error: http_listener_new: socket");
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203 return NULL;
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204 }
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205
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206 int o = 1;
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207 setsockopt(
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208 listener->server_socket,
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209 SOL_SOCKET, SO_REUSEADDR,
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210 &o,
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211 sizeof(int));
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212
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213 /* bind server socket to address */
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214 if(bind(listener->server_socket, (struct sockaddr*)&servaddr, sizeof(servaddr))){
115
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215 log_ereport(LOG_FAILURE, "http_listener_new: bind failed. Port: %d", conf->port);
1
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216 return NULL;
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217 }
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218
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219 /* create acceptors */
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220 listener->acceptors = calloc(listener->nacceptors, sizeof(void*));
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221 for (int i=0;i<listener->nacceptors;i++) {
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222 listener->acceptors[i] = acceptor_new(listener);
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223 }
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224
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225 return listener;
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226 }
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227
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228 int http_listener_start(HttpListener *listener) {
74
5bc6d078fb2c listeners can be dynamically added
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229 if(listener->running) {
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230 return 0;
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231 }
60
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diff changeset
232 log_ereport(LOG_INFORM, "start listener on port %d", listener->port);
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233
21
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diff changeset
234 if (listen(listener->server_socket, 256) == -1) {
115
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235 log_ereport(LOG_FAILURE, "http_listener_start: listen failed");
1
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236 return -1;
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237 }
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238
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239 /* start acceptor threads */
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240 for (int i=0;i<listener->nacceptors;i++) {
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241 acceptor_start(listener->acceptors[i]);
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242 }
19
d680536f8c2f Added configuration manager
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diff changeset
243
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244 return 0;
1
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245 }
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246
36
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247 void http_listener_ref(HttpListener *listener) {
41
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248 ws_atomic_inc32(&listener->ref);
36
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249 }
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diff changeset
250
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diff changeset
251 void http_listener_unref(HttpListener *listener) {
41
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diff changeset
252 uint32_t ref = ws_atomic_dec32(&listener->ref);
36
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253 if(ref == 0) {
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diff changeset
254 free(listener->acceptors);
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diff changeset
255 // TODO: unref cfg
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diff changeset
256 // TODO: unref session handler
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diff changeset
257 free(listener);
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258 }
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259 }
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260
1
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261
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262
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263 Acceptor* acceptor_new(HttpListener *listener) {
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264 Acceptor *acceptor = malloc(sizeof(Acceptor));
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265 acceptor->listener = listener;
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266 return acceptor;
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267 }
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268
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269 void acceptor_start(Acceptor *a) {
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270 if(pthread_create(
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271 &a->tid,
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272 NULL,
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273 (void*(*)(void*))acceptor_thread,
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274 a) != 0)
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275 {
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276 perror("Error: acceptor_start: pthread_create");
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277 }
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278 }
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279
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280 void* acceptor_thread(Acceptor *acceptor) {
87
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diff changeset
281 WS_ASSERT(acceptor);
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diff changeset
282 WS_ASSERT(acceptor->listener);
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diff changeset
283 WS_ASSERT(acceptor->listener->session_handler);
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diff changeset
284 WS_ASSERT(acceptor->listener->session_handler->enqueue_connection);
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285
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286 HttpListener *listener = acceptor->listener;
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287
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288 for (;;) {
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289 /* accept connections */
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diff changeset
290 struct sockaddr_in ca;
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diff changeset
291 socklen_t length = sizeof(ca);
1
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292 int clientfd;
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293
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294 /* accept a connection */
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295 clientfd = accept(
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296 listener->server_socket,
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297 (struct sockaddr*)&ca,
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298 &length);
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parents:
diff changeset
299 if (clientfd == -1) {
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diff changeset
300 perror("Error: acceptor_thread: accept");
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diff changeset
301 continue;
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diff changeset
302 }
101
7fbcdbad0baa added support for absolute URIs and improved keep alive
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diff changeset
303
36
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304 // check listener
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diff changeset
305 HttpListener *ls = listener;
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diff changeset
306 int acceptor_exit = 0;
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diff changeset
307 while(ls->next) {
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diff changeset
308 ls = ls->next;
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diff changeset
309 acceptor_exit = 1;
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310 }
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diff changeset
311
1
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312 /* create Connection object */
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313 Connection *conn = malloc(sizeof(Connection));
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314 conn->address = ca;
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315 conn->fd = clientfd;
36
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diff changeset
316 conn->listener = ls;
106
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317 if(ls->ssl) {
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318 SSL *ssl = SSL_new(ls->ssl->sslctx);
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319 SSL_set_fd(ssl, clientfd);
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320 if(SSL_accept(ssl) <= 0) {
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321 free(conn);
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322 conn = NULL;
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323 } else {
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324 conn->ssl = ssl;
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325 conn->read = connection_ssl_read;
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326 conn->write = connection_ssl_write;
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327 conn->close = connection_ssl_close;
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328 }
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329 } else {
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330 conn->ssl = NULL;
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331 conn->read = connection_read;
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332 conn->write = connection_write;
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333 conn->close = connection_close;
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334 }
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335
106
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336 if(conn) {
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337 cfg_ref(ls->cfg);
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338
106
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339 /* enqueue the connection */
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340 ls->session_handler->enqueue_connection(
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341 ls->session_handler,
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342 conn);
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343 }
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344
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345 /* ready for new connection */
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346
36
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347 if(acceptor_exit) {
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348 // this acceptor is outdated
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349 break;
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350 }
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351 }
25
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352
36
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353 http_listener_unref(listener->next);
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354 http_listener_unref(listener);
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355
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356 return NULL;
1
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357 }

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