Sat, 07 May 2022 14:08:46 +0200
code cleanup
1 | 1 | /* |
2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
3 | * | |
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4 | * Copyright 2013 Olaf Wintermann. All rights reserved. |
1 | 5 | * |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
26 | * POSSIBILITY OF SUCH DAMAGE. | |
27 | */ | |
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 | |
1 | 34 | #include <stdio.h> |
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> |
1 | 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/io.h" |
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49 | #include "../util/util.h" |
1 | 50 | |
254 | 51 | #include <ucx/utils.h> |
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52 | |
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53 | #include "../safs/common.h" |
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54 | |
1 | 55 | #include "func.h" |
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56 | #include "config.h" |
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57 | #include "configmanager.h" |
1 | 58 | #include "httplistener.h" |
59 | #include "webserver.h" | |
28 | 60 | #include "log.h" |
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61 | #include "auth.h" |
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62 | #include "srvctrl.h" |
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63 | #include "resourcepool.h" |
1 | 64 | |
65 | extern struct FuncStruct webserver_funcs[]; | |
66 | ||
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67 | static RestartCallback *atrestart; |
1 | 68 | |
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69 | int webserver_init() { |
1 | 70 | // init NSPR |
71 | systhread_init("webserver"); | |
28 | 72 | |
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73 | // init ssl |
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74 | if(ws_init_ssl()) { |
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75 | return -1; |
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76 | } |
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77 | |
1 | 78 | // init NSAPI functions |
79 | func_init(); | |
80 | add_functions(webserver_funcs); | |
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81 | |
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82 | // init resource pools |
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83 | if(init_resource_pools()) { |
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84 | return -1; |
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85 | } |
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86 | |
1 | 87 | // load init.conf |
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88 | if(load_init_conf("config/init.conf")) { |
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89 | return -1; |
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90 | } |
1 | 91 | |
92 | // load server.conf | |
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93 | init_configuration_manager(); |
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94 | ServerConfiguration *cfg; |
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95 | if(cfgmgr_load_config(&cfg) != 0) { |
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96 | return -1; |
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97 | } |
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98 | |
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99 | // init caches |
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100 | auth_cache_init(); |
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101 | |
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102 | // init SAFs |
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103 | common_saf_init(); |
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104 | |
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105 | // set global vars |
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106 | conf_global_vars_s *vars = conf_getglobals(); |
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107 | |
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108 | WSBool changeuid = FALSE; |
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109 | uid_t ws_uid = geteuid(); |
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110 | setpwent(); |
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111 | char *pwbuf = malloc(DEF_PWBUF); |
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112 | vars->Vuserpw = malloc(sizeof(struct passwd)); |
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113 | if(cfg->user.ptr) { |
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114 | if(!util_getpwnam(cfg->user.ptr, vars->Vuserpw, pwbuf, DEF_PWBUF)) { |
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115 | log_ereport( |
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116 | LOG_MISCONFIG, |
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117 | "user %s does not exist!", |
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118 | cfg->user.ptr); |
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119 | free(vars->Vuserpw); |
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120 | vars->Vuserpw = NULL; |
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121 | } else { |
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122 | changeuid = TRUE; |
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123 | } |
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124 | } else { |
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125 | if(!util_getpwuid(ws_uid, vars->Vuserpw, pwbuf, DEF_PWBUF)) { |
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126 | log_ereport(LOG_FAILURE, "webserver_init: cannot get passwd data"); |
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127 | free(vars->Vuserpw); |
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128 | vars->Vuserpw = NULL; |
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129 | } |
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130 | } |
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131 | if(!vars->Vuserpw) { |
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132 | log_ereport(LOG_WARN, "globalvars->Vuserpw is null"); |
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133 | } |
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134 | |
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135 | // change uid |
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136 | if(changeuid && ws_uid == 0) { |
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137 | // a webserver user is set and we are root |
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138 | |
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139 | if(setgid(vars->Vuserpw->pw_gid) != 0) { |
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140 | log_ereport( |
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141 | LOG_FAILURE, |
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142 | "setgid(%d) failed", |
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143 | vars->Vuserpw->pw_gid); |
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144 | } else { |
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145 | // setgid was successful |
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146 | // we need to call initgroups to have all group permissions |
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147 | if(initgroups(vars->Vuserpw->pw_name, vars->Vuserpw->pw_gid)!=0) { |
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148 | log_ereport(LOG_FAILURE, "initgroups failed"); |
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149 | } |
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150 | } |
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151 | |
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152 | // change the uid |
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153 | if(setuid(vars->Vuserpw->pw_uid)) { |
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154 | log_ereport( |
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155 | LOG_FAILURE, |
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156 | "setuid(%d) failed", |
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157 | vars->Vuserpw->pw_uid); |
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158 | } |
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159 | } else if(vars->Vuserpw) { |
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160 | log_ereport( |
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161 | LOG_WARN, |
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162 | "server must be started as root to change uid"); |
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163 | } |
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164 | |
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165 | // create tmp dir and pid file |
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166 | char *mkdir_cmd = NULL; |
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167 | asprintf(&mkdir_cmd, "mkdir -p %s", cfg->tmp.ptr); |
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168 | system(mkdir_cmd); |
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169 | free(mkdir_cmd); |
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170 | |
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171 | char *pid_file_path = NULL; |
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172 | asprintf(&pid_file_path, "%s/pid", cfg->tmp.ptr); |
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173 | FILE *pidfile = fopen(pid_file_path, "w"); // TODO: check error |
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174 | pid_t pid = getpid(); |
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175 | fprintf(pidfile, "%d", pid); |
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176 | fclose(pidfile); |
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177 | free(pid_file_path); |
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178 | |
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179 | // create unix domain socket for server control |
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180 | sstr_t tmp_priv = ucx_sprintf("%s/private", cfg->tmp.ptr); |
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181 | // TODO: remove existing private dir |
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182 | if(mkdir(tmp_priv.ptr, S_IRWXU)) { |
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183 | if(errno == EEXIST) { |
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184 | if(chmod(tmp_priv.ptr, S_IRWXU)) { |
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185 | log_ereport( |
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186 | LOG_CATASTROPHE, |
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187 | "cannot change permissions of tmp dir %s:", |
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188 | tmp_priv.ptr, |
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189 | strerror(errno)); |
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190 | return 0; |
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191 | } |
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192 | } else { |
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193 | log_ereport( |
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194 | LOG_CATASTROPHE, |
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195 | "cannot create tmp dir %s:", |
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196 | tmp_priv.ptr, |
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197 | strerror(errno)); |
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198 | return -1; |
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199 | } |
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200 | } |
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201 | |
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202 | |
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203 | // create srvctrl unix domain socket |
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204 | // this socket is used for stop, reconfigure and other operations |
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205 | if(srvctrl_init(cfg)) { |
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206 | return -1; |
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207 | } |
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208 | |
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209 | //endpwent(); // TODO: close or not? |
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210 | //free(pwbuf); // TODO: ? |
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211 | |
1 | 212 | return 0; |
213 | } | |
214 | ||
215 | int webserver_run() { | |
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216 | log_ereport(LOG_VERBOSE, "webserver_run"); |
1 | 217 | |
218 | // start all http listener | |
219 | if(start_all_listener() != 0) { | |
220 | fprintf(stderr, "Error: Cannot start http listener\n"); | |
221 | } | |
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222 | |
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223 | log_ereport(LOG_INFORM, "webserver started"); |
1 | 224 | |
225 | return 0; | |
226 | } | |
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227 | |
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228 | void webserver_shutdown() { |
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229 | log_ereport(LOG_INFORM, "webserver shutdown"); |
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230 | |
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231 | srvctrl_shutdown(); |
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232 | |
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233 | // execute restart callbacks |
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234 | RestartCallback *re = atrestart; |
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235 | while(re) { |
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236 | re->func(re->data); |
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237 | re = re->next; |
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238 | } |
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239 | } |
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240 | |
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241 | int webserver_reconfig() { |
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242 | if(cfgmgr_load_config(NULL) != 0) { |
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243 | return -1; |
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244 | } |
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245 | // start newly created listeners |
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246 | start_all_listener(); |
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247 | |
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248 | return 0; |
156
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249 | } |
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250 | |
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251 | void webserver_atrestart(void (*fn)(void *), void *data) { |
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252 | RestartCallback *cb = malloc(sizeof(RestartCallback)); |
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253 | cb->func = fn; |
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254 | cb->data = data; |
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255 | cb->next = NULL; |
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256 | |
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257 | if(atrestart) { |
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258 | RestartCallback *elm = atrestart; |
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259 | while(elm) { |
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260 | if(!elm->next) { |
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261 | elm->next = cb; |
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262 | break; |
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263 | } |
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264 | elm = elm->next; |
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265 | } |
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266 | } else { |
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267 | atrestart = cb; |
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268 | } |
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269 | } |
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270 | |
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271 | int nsapi_runtime_version() { |
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272 | return 303; |
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273 | } |
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274 | |
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275 | |
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276 | int ws_init_ssl() { |
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277 | // TODO: handle errors |
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278 | SSL_load_error_strings(); |
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279 | SSL_library_init(); |
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280 | OpenSSL_add_all_algorithms(); |
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281 | return 0; |
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282 | } |