src/server/daemon/webserver.c

Sat, 18 Mar 2023 11:44:37 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sat, 18 Mar 2023 11:44:37 +0100
changeset 477
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parent 461
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child 556
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permissions
-rw-r--r--

fix nsapi_error_request() could send empty error messages with http status 200, if the request status code wasn't set

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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 <cx/utils.h>
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52 #include <cx/printf.h>
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53 #include <cx/compare.h>
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54
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55 #include "../safs/common.h"
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56
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57 #include "func.h"
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58 #include "config.h"
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59 #include "configmanager.h"
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60 #include "httplistener.h"
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61 #include "webserver.h"
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62 #include "auth.h"
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63 #include "srvctrl.h"
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64 #include "resourcepool.h"
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65 #include "ldap_resource.h"
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66
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67 extern struct FuncStruct webserver_funcs[];
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68
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69 static RestartCallback *atrestart;
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70
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71 int webserver_init() {
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72 // init NSPR
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73 systhread_init("webserver");
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74
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75 log_ereport(LOG_VERBOSE, "webserver_init");
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76
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77 // init ssl
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78 if(ws_init_ssl()) {
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79 log_ereport(LOG_FAILURE, "ssl init failed");
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80 return -1;
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81 }
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82
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83 // init listener socket map
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84 if(http_listener_global_init()) {
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85 log_ereport(LOG_FAILURE, "listener global init failed");
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86 return -1;
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87 }
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88
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89 // init NSAPI functions
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90 pblock_init_default_keys();
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91 atexit(pblock_free_default_keys);
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92 func_init();
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93 add_functions(webserver_funcs);
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94
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95 // init resource pools
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96 if(init_resource_pools()) {
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97 log_ereport(LOG_FAILURE, "resource pool init failed");
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98 return -1;
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99 }
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100 if(resourcepool_register_type("ldap", ldap_get_resource_type())) {
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101 log_ereport(LOG_FAILURE, "webserver-init: Cannot register ldap resourcepool type");
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102 return -1;
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103 }
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104
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105 // load init.conf
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106 InitConfig *init_config = load_init_conf("config/init.conf");
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107 if(!init_config) {
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108 return -1;
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109 }
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110
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111 // load server.conf
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112 // Only the runtime infos are stored in the ServerConfiguration at
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113 // this stage. The remaining configuration is loaded after the uid
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114 // is changed (if needed).
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115 init_configuration_manager();
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116 CfgManager mgr;
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117 if(cfgmgr_load_config(&mgr) != 0) {
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118 return 1;
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119 }
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120 log_ereport(LOG_VERBOSE, "cfgmgr_load_config stage 1 successful");
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121 ServerConfiguration *cfg = mgr.cfg;
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122
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123 // set global vars
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124 conf_global_vars_s *vars = conf_getglobals();
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125
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126 WSBool changeuid = FALSE;
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127 uid_t ws_uid = geteuid();
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128 setpwent();
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129 char *pwbuf = malloc(DEF_PWBUF);
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130 vars->Vuserpw = malloc(sizeof(struct passwd));
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131 if(cfg->user.ptr) {
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132 if(!util_getpwnam(cfg->user.ptr, vars->Vuserpw, pwbuf, DEF_PWBUF)) {
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133 log_ereport(
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134 LOG_MISCONFIG,
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135 "user %s does not exist!",
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136 cfg->user.ptr);
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137 free(vars->Vuserpw);
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138 vars->Vuserpw = NULL;
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139 } else {
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140 changeuid = TRUE;
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141 }
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142 } else {
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143 if(!util_getpwuid(ws_uid, vars->Vuserpw, pwbuf, DEF_PWBUF)) {
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144 log_ereport(LOG_FAILURE, "webserver_init: cannot get passwd data");
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145 free(vars->Vuserpw);
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146 vars->Vuserpw = NULL;
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147 }
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148 }
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149 if(!vars->Vuserpw) {
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diff changeset
150 log_ereport(LOG_VERBOSE, "globalvars->Vuserpw is null");
73
79fa26ecd135 added file system ACLs for linux
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151 }
443
ef3c8a0e1fee improve daemon startup
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152
47
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153 // change uid
146
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diff changeset
154 if(changeuid && ws_uid == 0) {
47
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155 // a webserver user is set and we are root
391
80ee93a7d257 add verbose logging for setuid/setgid and abort startup if setuid fails
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156 log_ereport(LOG_VERBOSE, "setgid(%d)", vars->Vuserpw->pw_gid);
47
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157 if(setgid(vars->Vuserpw->pw_gid) != 0) {
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158 log_ereport(
60
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159 LOG_FAILURE,
47
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160 "setgid(%d) failed",
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161 vars->Vuserpw->pw_gid);
391
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162 return -1;
47
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parents: 44
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163 } else {
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164 // setgid was successful
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165 // we need to call initgroups to have all group permissions
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166 if(initgroups(vars->Vuserpw->pw_name, vars->Vuserpw->pw_gid)!=0) {
60
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167 log_ereport(LOG_FAILURE, "initgroups failed");
391
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168 return -1;
47
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169 }
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170 }
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171
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172 // change the uid
391
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173 log_ereport(LOG_VERBOSE, "setuid(%d)", vars->Vuserpw->pw_uid);
47
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174 if(setuid(vars->Vuserpw->pw_uid)) {
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175 log_ereport(
60
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176 LOG_FAILURE,
47
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177 "setuid(%d) failed",
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178 vars->Vuserpw->pw_uid);
391
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179 return -1;
47
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180 }
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181 } else if(vars->Vuserpw) {
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182 log_ereport(
60
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183 LOG_WARN,
47
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184 "server must be started as root to change uid");
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185 }
66
74babc0082b7 added authentication cache
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186
426
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187 // run Init directives
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188 // this must be done after setuid
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189 int err = apply_init_conf(init_config);
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190 free_init_conf(init_config);
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191 if(err) {
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192 log_ereport(LOG_FAILURE, "server init failed");
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193 return 1;
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194 }
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195
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196 // init caches
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197 auth_cache_init();
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198
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199 // init SAFs
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diff changeset
200 common_saf_init();
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201
388
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202
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203 // now that the process is running as the correct user, we can load
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204 // the remaining config
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diff changeset
205 if(cfgmgr_apply_config(&mgr)) {
392
0aef555055ee print error in case the log file config doesn't work
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diff changeset
206 log_ereport(LOG_FAILURE, "load config stage 2 failed");
388
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207 return -1;
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208 }
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209
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diff changeset
210
156
724e107983e9 adds unix domain socket for server control ops
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211 // create tmp dir and pid file
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212 char *mkdir_cmd = NULL;
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213 asprintf(&mkdir_cmd, "mkdir -p %s", cfg->tmp.ptr);
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diff changeset
214 system(mkdir_cmd);
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215 free(mkdir_cmd);
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216
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217 char *pid_file_path = NULL;
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diff changeset
218 asprintf(&pid_file_path, "%s/pid", cfg->tmp.ptr);
427
a327cb6cc868 add check if pidfile can be opened
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parents: 426
diff changeset
219 FILE *pidfile = fopen(pid_file_path, "w");
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diff changeset
220 if(!pidfile) {
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221 log_ereport(LOG_FAILURE, "cannot open pid file %s: %s", pid_file_path, strerror(errno));
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222 return -1;
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parents: 426
diff changeset
223 }
156
724e107983e9 adds unix domain socket for server control ops
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diff changeset
224 pid_t pid = getpid();
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225 fprintf(pidfile, "%d", pid);
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226 fclose(pidfile);
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227 free(pid_file_path);
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diff changeset
228
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229 // create unix domain socket for server control
415
d938228c382e switch from ucx 2 to 3
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parents: 392
diff changeset
230 cxmutstr tmp_priv = cx_asprintf("%s/private", cfg->tmp.ptr);
156
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diff changeset
231 // TODO: remove existing private dir
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diff changeset
232 if(mkdir(tmp_priv.ptr, S_IRWXU)) {
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diff changeset
233 if(errno == EEXIST) {
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diff changeset
234 if(chmod(tmp_priv.ptr, S_IRWXU)) {
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parents: 154
diff changeset
235 log_ereport(
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parents: 154
diff changeset
236 LOG_CATASTROPHE,
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diff changeset
237 "cannot change permissions of tmp dir %s:",
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diff changeset
238 tmp_priv.ptr,
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diff changeset
239 strerror(errno));
392
0aef555055ee print error in case the log file config doesn't work
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diff changeset
240 return -1;
156
724e107983e9 adds unix domain socket for server control ops
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diff changeset
241 }
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parents: 154
diff changeset
242 } else {
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parents: 154
diff changeset
243 log_ereport(
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parents: 154
diff changeset
244 LOG_CATASTROPHE,
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parents: 154
diff changeset
245 "cannot create tmp dir %s:",
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parents: 154
diff changeset
246 tmp_priv.ptr,
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diff changeset
247 strerror(errno));
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diff changeset
248 return -1;
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parents: 154
diff changeset
249 }
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parents: 154
diff changeset
250 }
724e107983e9 adds unix domain socket for server control ops
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parents: 154
diff changeset
251
724e107983e9 adds unix domain socket for server control ops
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parents: 154
diff changeset
252
724e107983e9 adds unix domain socket for server control ops
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diff changeset
253 // create srvctrl unix domain socket
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diff changeset
254 // this socket is used for stop, reconfigure and other operations
158
77f4f0079428 adds reconfig and shutdown handler to srvctrl
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parents: 156
diff changeset
255 if(srvctrl_init(cfg)) {
156
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parents: 154
diff changeset
256 return -1;
158
77f4f0079428 adds reconfig and shutdown handler to srvctrl
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parents: 156
diff changeset
257 }
156
724e107983e9 adds unix domain socket for server control ops
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parents: 154
diff changeset
258
146
a9591a91c004 fixes server user init
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parents: 133
diff changeset
259 //endpwent(); // TODO: close or not?
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parents: 133
diff changeset
260 //free(pwbuf); // TODO: ?
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diff changeset
261
1
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parents:
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262 return 0;
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parents:
diff changeset
263 }
3c066d52342d added source
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parents:
diff changeset
264
3c066d52342d added source
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parents:
diff changeset
265 int webserver_run() {
115
51d9a15eac98 improves logging
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parents: 106
diff changeset
266 log_ereport(LOG_VERBOSE, "webserver_run");
1
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parents:
diff changeset
267
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parents:
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268 // start all http listener
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parents:
diff changeset
269 if(start_all_listener() != 0) {
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parents:
diff changeset
270 fprintf(stderr, "Error: Cannot start http listener\n");
3c066d52342d added source
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parents:
diff changeset
271 }
115
51d9a15eac98 improves logging
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parents: 106
diff changeset
272
51d9a15eac98 improves logging
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diff changeset
273 log_ereport(LOG_INFORM, "webserver started");
1
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parents:
diff changeset
274
3c066d52342d added source
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275 return 0;
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parents:
diff changeset
276 }
9
30e51941a673 Added mod_jk dependencies
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parents: 6
diff changeset
277
68
f5102a892ed4 some fixes for mod_jk
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diff changeset
278 void webserver_shutdown() {
115
51d9a15eac98 improves logging
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parents: 106
diff changeset
279 log_ereport(LOG_INFORM, "webserver shutdown");
68
f5102a892ed4 some fixes for mod_jk
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parents: 66
diff changeset
280
158
77f4f0079428 adds reconfig and shutdown handler to srvctrl
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parents: 156
diff changeset
281 srvctrl_shutdown();
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diff changeset
282
68
f5102a892ed4 some fixes for mod_jk
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diff changeset
283 // execute restart callbacks
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diff changeset
284 RestartCallback *re = atrestart;
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diff changeset
285 while(re) {
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diff changeset
286 re->func(re->data);
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parents: 66
diff changeset
287 re = re->next;
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diff changeset
288 }
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parents: 66
diff changeset
289 }
9
30e51941a673 Added mod_jk dependencies
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parents: 6
diff changeset
290
158
77f4f0079428 adds reconfig and shutdown handler to srvctrl
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parents: 156
diff changeset
291 int webserver_reconfig() {
440
d77b8f3e14e2 implement successor listener, fix webserver_reconfig
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parents: 438
diff changeset
292 CfgManager mgr;
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parents: 438
diff changeset
293 if(cfgmgr_load_config(&mgr) != 0) {
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parents: 438
diff changeset
294 log_ereport(LOG_FAILURE, "cannot reload server.conf");
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parents: 438
diff changeset
295 return 1;
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parents: 438
diff changeset
296 } else {
d77b8f3e14e2 implement successor listener, fix webserver_reconfig
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parents: 438
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297 if(cfgmgr_apply_config(&mgr)) {
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298 log_ereport(LOG_FAILURE, "cannot reload config");
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299 return 1;
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300 }
158
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301 }
440
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302
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303 // start newly created listeners
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304 start_all_listener();
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305
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306 return 0;
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307 }
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308
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309 void webserver_atrestart(void (*fn)(void *), void *data) {
68
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310 RestartCallback *cb = malloc(sizeof(RestartCallback));
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311 cb->func = fn;
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312 cb->data = data;
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313 cb->next = NULL;
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314
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315 if(atrestart) {
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316 RestartCallback *elm = atrestart;
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317 while(elm) {
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318 if(!elm->next) {
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319 elm->next = cb;
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320 break;
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321 }
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322 elm = elm->next;
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323 }
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324 } else {
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325 atrestart = cb;
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326 }
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327 }
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328
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329 int nsapi_runtime_version() {
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330 return 303;
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331 }
106
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332
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333
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334 int ws_init_ssl() {
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335 // TODO: handle errors
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336 SSL_load_error_strings();
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337 SSL_library_init();
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338 OpenSSL_add_all_algorithms();
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339 return 0;
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340 }

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