src/server/daemon/webserver.c

Tue, 01 Nov 2022 16:40:03 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Tue, 01 Nov 2022 16:40:03 +0100
changeset 403
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parent 392
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child 415
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permissions
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fix multistatus response creating namespace definitions twice in some cases

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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 #ifdef __gnu_linux__
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31 #define _GNU_SOURCE
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32 #endif
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33
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34 #include <stdio.h>
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35 #include <stdlib.h>
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36 #include <dlfcn.h>
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37 #include <grp.h>
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38 #include <sys/types.h>
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39 #include <sys/stat.h>
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40
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41 #include <openssl/bio.h>
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42 #include <openssl/ssl.h>
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43 #include <openssl/err.h>
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44
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45 #include "../public/nsapi.h"
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46 #include "../public/auth.h"
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47 #include "../util/systhr.h"
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48 #include "../util/pblock.h"
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49 #include "../util/util.h"
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50
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51 #include <ucx/utils.h>
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52
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53 #include "../safs/common.h"
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54
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55 #include "func.h"
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56 #include "config.h"
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57 #include "configmanager.h"
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58 #include "httplistener.h"
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59 #include "webserver.h"
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60 #include "auth.h"
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61 #include "srvctrl.h"
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62 #include "resourcepool.h"
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64 extern struct FuncStruct webserver_funcs[];
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65
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66 static RestartCallback *atrestart;
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67
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68 int webserver_init() {
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69 // init NSPR
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70 systhread_init("webserver");
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71
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72 log_ereport(LOG_VERBOSE, "webserver_init");
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74 // init ssl
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75 if(ws_init_ssl()) {
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76 log_ereport(LOG_FAILURE, "ssl init failed");
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77 return -1;
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78 }
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79
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80 // init NSAPI functions
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81 pblock_init_default_keys();
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82 atexit(pblock_free_default_keys);
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83 func_init();
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84 add_functions(webserver_funcs);
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85
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86 // init resource pools
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87 if(init_resource_pools()) {
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88 log_ereport(LOG_FAILURE, "resource pool init failed");
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89 return -1;
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90 }
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91
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92 // load init.conf
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93 if(load_init_conf("config/init.conf")) {
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94 return -1;
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95 }
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96
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97 // load server.conf
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98 // Only the runtime infos are stored in the ServerConfiguration at
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99 // this stage. The remaining configuration is loaded after the uid
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100 // is changed (if needed).
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101 init_configuration_manager();
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102 CfgManager mgr;
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103 if(cfgmgr_load_config(&mgr) != 0) {
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104 return -1;
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105 }
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106 log_ereport(LOG_VERBOSE, "cfgmgr_load_config stage 1 successful");
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107 ServerConfiguration *cfg = mgr.cfg;
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108
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109 // init caches
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110 auth_cache_init();
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111
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112 // init SAFs
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113 common_saf_init();
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114
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115 // set global vars
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116 conf_global_vars_s *vars = conf_getglobals();
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117
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118 WSBool changeuid = FALSE;
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119 uid_t ws_uid = geteuid();
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120 setpwent();
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121 char *pwbuf = malloc(DEF_PWBUF);
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122 vars->Vuserpw = malloc(sizeof(struct passwd));
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123 if(cfg->user.ptr) {
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124 if(!util_getpwnam(cfg->user.ptr, vars->Vuserpw, pwbuf, DEF_PWBUF)) {
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125 log_ereport(
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126 LOG_MISCONFIG,
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127 "user %s does not exist!",
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128 cfg->user.ptr);
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129 free(vars->Vuserpw);
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130 vars->Vuserpw = NULL;
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131 } else {
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132 changeuid = TRUE;
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133 }
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134 } else {
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135 if(!util_getpwuid(ws_uid, vars->Vuserpw, pwbuf, DEF_PWBUF)) {
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136 log_ereport(LOG_FAILURE, "webserver_init: cannot get passwd data");
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137 free(vars->Vuserpw);
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138 vars->Vuserpw = NULL;
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139 }
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140 }
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141 if(!vars->Vuserpw) {
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142 log_ereport(LOG_WARN, "globalvars->Vuserpw is null");
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143 }
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144
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145 // change uid
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146 if(changeuid && ws_uid == 0) {
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147 // a webserver user is set and we are root
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148 log_ereport(LOG_VERBOSE, "setgid(%d)", vars->Vuserpw->pw_gid);
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149 if(setgid(vars->Vuserpw->pw_gid) != 0) {
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150 log_ereport(
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151 LOG_FAILURE,
47
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152 "setgid(%d) failed",
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153 vars->Vuserpw->pw_gid);
391
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154 return -1;
47
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155 } else {
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156 // setgid was successful
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157 // we need to call initgroups to have all group permissions
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158 if(initgroups(vars->Vuserpw->pw_name, vars->Vuserpw->pw_gid)!=0) {
60
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159 log_ereport(LOG_FAILURE, "initgroups failed");
391
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160 return -1;
47
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161 }
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162 }
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163
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164 // change the uid
391
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165 log_ereport(LOG_VERBOSE, "setuid(%d)", vars->Vuserpw->pw_uid);
47
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166 if(setuid(vars->Vuserpw->pw_uid)) {
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167 log_ereport(
60
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168 LOG_FAILURE,
47
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169 "setuid(%d) failed",
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170 vars->Vuserpw->pw_uid);
391
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171 return -1;
47
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172 }
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173 } else if(vars->Vuserpw) {
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174 log_ereport(
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175 LOG_WARN,
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176 "server must be started as root to change uid");
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177 }
66
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178
388
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179
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180 // now that the process is running as the correct user, we can load
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181 // the remaining config
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182 if(cfgmgr_apply_config(&mgr)) {
392
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183 log_ereport(LOG_FAILURE, "load config stage 2 failed");
388
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184 return -1;
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185 }
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186
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187
156
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188 // create tmp dir and pid file
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189 char *mkdir_cmd = NULL;
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190 asprintf(&mkdir_cmd, "mkdir -p %s", cfg->tmp.ptr);
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191 system(mkdir_cmd);
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192 free(mkdir_cmd);
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193
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194 char *pid_file_path = NULL;
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195 asprintf(&pid_file_path, "%s/pid", cfg->tmp.ptr);
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196 FILE *pidfile = fopen(pid_file_path, "w"); // TODO: check error
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197 pid_t pid = getpid();
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198 fprintf(pidfile, "%d", pid);
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199 fclose(pidfile);
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200 free(pid_file_path);
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201
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202 // create unix domain socket for server control
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203 sstr_t tmp_priv = ucx_sprintf("%s/private", cfg->tmp.ptr);
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204 // TODO: remove existing private dir
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205 if(mkdir(tmp_priv.ptr, S_IRWXU)) {
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206 if(errno == EEXIST) {
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207 if(chmod(tmp_priv.ptr, S_IRWXU)) {
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208 log_ereport(
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209 LOG_CATASTROPHE,
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210 "cannot change permissions of tmp dir %s:",
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211 tmp_priv.ptr,
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212 strerror(errno));
392
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213 return -1;
156
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214 }
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215 } else {
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216 log_ereport(
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217 LOG_CATASTROPHE,
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218 "cannot create tmp dir %s:",
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219 tmp_priv.ptr,
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220 strerror(errno));
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221 return -1;
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222 }
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223 }
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224
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225
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226 // create srvctrl unix domain socket
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227 // this socket is used for stop, reconfigure and other operations
158
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228 if(srvctrl_init(cfg)) {
156
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229 return -1;
158
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230 }
156
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231
146
a9591a91c004 fixes server user init
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232 //endpwent(); // TODO: close or not?
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233 //free(pwbuf); // TODO: ?
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234
1
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235 return 0;
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236 }
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237
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238 int webserver_run() {
115
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239 log_ereport(LOG_VERBOSE, "webserver_run");
1
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240
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241 // start all http listener
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242 if(start_all_listener() != 0) {
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243 fprintf(stderr, "Error: Cannot start http listener\n");
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244 }
115
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diff changeset
245
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246 log_ereport(LOG_INFORM, "webserver started");
1
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parents:
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247
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248 return 0;
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parents:
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249 }
9
30e51941a673 Added mod_jk dependencies
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diff changeset
250
68
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diff changeset
251 void webserver_shutdown() {
115
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diff changeset
252 log_ereport(LOG_INFORM, "webserver shutdown");
68
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diff changeset
253
158
77f4f0079428 adds reconfig and shutdown handler to srvctrl
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diff changeset
254 srvctrl_shutdown();
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diff changeset
255
68
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256 // execute restart callbacks
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diff changeset
257 RestartCallback *re = atrestart;
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diff changeset
258 while(re) {
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diff changeset
259 re->func(re->data);
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260 re = re->next;
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261 }
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diff changeset
262 }
9
30e51941a673 Added mod_jk dependencies
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parents: 6
diff changeset
263
158
77f4f0079428 adds reconfig and shutdown handler to srvctrl
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parents: 156
diff changeset
264 int webserver_reconfig() {
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diff changeset
265 if(cfgmgr_load_config(NULL) != 0) {
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diff changeset
266 return -1;
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diff changeset
267 }
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diff changeset
268 // start newly created listeners
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diff changeset
269 start_all_listener();
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diff changeset
270
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diff changeset
271 return 0;
156
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diff changeset
272 }
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parents: 154
diff changeset
273
9
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diff changeset
274 void webserver_atrestart(void (*fn)(void *), void *data) {
68
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diff changeset
275 RestartCallback *cb = malloc(sizeof(RestartCallback));
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diff changeset
276 cb->func = fn;
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diff changeset
277 cb->data = data;
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diff changeset
278 cb->next = NULL;
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diff changeset
279
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diff changeset
280 if(atrestart) {
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diff changeset
281 RestartCallback *elm = atrestart;
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diff changeset
282 while(elm) {
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diff changeset
283 if(!elm->next) {
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diff changeset
284 elm->next = cb;
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diff changeset
285 break;
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diff changeset
286 }
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diff changeset
287 elm = elm->next;
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diff changeset
288 }
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diff changeset
289 } else {
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diff changeset
290 atrestart = cb;
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diff changeset
291 }
9
30e51941a673 Added mod_jk dependencies
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parents: 6
diff changeset
292 }
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parents: 6
diff changeset
293
68
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diff changeset
294 int nsapi_runtime_version() {
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295 return 303;
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diff changeset
296 }
106
b122f34ddc80 added minimal ssl support
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parents: 85
diff changeset
297
b122f34ddc80 added minimal ssl support
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diff changeset
298
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diff changeset
299 int ws_init_ssl() {
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300 // TODO: handle errors
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diff changeset
301 SSL_load_error_strings();
b122f34ddc80 added minimal ssl support
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 85
diff changeset
302 SSL_library_init();
b122f34ddc80 added minimal ssl support
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 85
diff changeset
303 OpenSSL_add_all_algorithms();
b122f34ddc80 added minimal ssl support
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 85
diff changeset
304 return 0;
b122f34ddc80 added minimal ssl support
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 85
diff changeset
305 }

mercurial