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using host header to select virtual server
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 | |
51 | #include "func.h" | |
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52 | #include "config.h" |
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53 | #include "configmanager.h" |
1 | 54 | #include "httplistener.h" |
55 | #include "webserver.h" | |
28 | 56 | #include "log.h" |
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57 | #include "auth.h" |
1 | 58 | |
59 | extern struct FuncStruct webserver_funcs[]; | |
60 | ||
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61 | static RestartCallback *atrestart; |
1 | 62 | |
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63 | int webserver_init() { |
1 | 64 | // init NSPR |
65 | systhread_init("webserver"); | |
28 | 66 | |
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67 | // init ssl |
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68 | if(ws_init_ssl()) { |
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69 | return -1; |
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70 | } |
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71 | |
1 | 72 | // init NSAPI functions |
73 | func_init(); | |
74 | add_functions(webserver_funcs); | |
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75 | |
1 | 76 | // load init.conf |
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77 | if(load_init_conf("config/init.conf")) { |
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78 | return -1; |
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79 | } |
1 | 80 | |
81 | // load server.conf | |
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82 | init_configuration_manager(); |
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83 | ServerConfiguration *cfg; |
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84 | if(cfgmgr_load_config(&cfg) != 0) { |
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85 | fprintf(stderr, "Cannot load configuration\n"); |
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86 | return -1; |
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87 | } |
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88 | |
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89 | // init caches |
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90 | auth_cache_init(); |
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91 | |
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92 | // create tmp dir and pid file |
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93 | char *mkdir_cmd = NULL; |
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94 | asprintf(&mkdir_cmd, "mkdir -p %s", cfg->tmp.ptr); |
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95 | system(mkdir_cmd); |
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96 | free(mkdir_cmd); |
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97 | |
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98 | char *pid_file_path = NULL; |
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99 | asprintf(&pid_file_path, "%s/pid", cfg->tmp.ptr); |
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100 | FILE *pidfile = fopen(pid_file_path, "w"); |
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101 | pid_t pid = getpid(); |
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102 | fprintf(pidfile, "%d", pid); |
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103 | fclose(pidfile); |
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104 | free(pid_file_path); |
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105 | |
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106 | // set global vars |
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107 | conf_global_vars_s *vars = conf_getglobals(); |
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108 | |
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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 | } |
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122 | } else { |
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123 | if(!util_getpwuid(ws_uid, vars->Vuserpw, pwbuf, DEF_PWBUF)) { |
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124 | log_ereport(LOG_FAILURE, "webserver_init: cannot get passwd data"); |
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125 | free(vars->Vuserpw); |
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126 | vars->Vuserpw = NULL; |
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127 | } |
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128 | } |
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129 | if(!vars->Vuserpw) { |
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130 | log_ereport(LOG_WARN, "globalvars->Vuserpw is null"); |
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131 | } |
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132 | |
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133 | if(cfg->user.ptr) { |
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134 | vars->Vuserpw = malloc(sizeof(struct passwd)); |
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135 | // open user database |
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136 | //setpwent(); |
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137 | if(!util_getpwnam(cfg->user.ptr, vars->Vuserpw, pwbuf, DEF_PWBUF)) { |
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138 | log_ereport( |
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139 | LOG_MISCONFIG, |
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140 | "user %s does not exist!", |
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141 | cfg->user.ptr); |
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142 | free(vars->Vuserpw); |
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143 | vars->Vuserpw = NULL; |
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144 | } |
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145 | //endpwent(); // TODO: close or not? |
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146 | } |
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147 | free(pwbuf); |
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148 | |
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149 | // change uid |
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150 | if(vars->Vuserpw && ws_uid == 0) { |
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151 | // a webserver user is set and we are root |
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152 | |
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153 | if(setgid(vars->Vuserpw->pw_gid) != 0) { |
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154 | log_ereport( |
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155 | LOG_FAILURE, |
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156 | "setgid(%d) failed", |
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157 | vars->Vuserpw->pw_gid); |
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158 | } else { |
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159 | // setgid was successful |
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160 | // we need to call initgroups to have all group permissions |
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161 | if(initgroups(vars->Vuserpw->pw_name, vars->Vuserpw->pw_gid)!=0) { |
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162 | log_ereport(LOG_FAILURE, "initgroups failed"); |
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163 | } |
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164 | } |
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165 | |
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166 | // change the uid |
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167 | if(setuid(vars->Vuserpw->pw_uid)) { |
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168 | log_ereport( |
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169 | LOG_FAILURE, |
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170 | "setuid(%d) failed", |
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171 | vars->Vuserpw->pw_uid); |
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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 | } |
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178 | |
1 | 179 | return 0; |
180 | } | |
181 | ||
182 | int webserver_run() { | |
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183 | log_ereport(LOG_VERBOSE, "webserver_run"); |
1 | 184 | |
185 | // start all http listener | |
186 | if(start_all_listener() != 0) { | |
187 | fprintf(stderr, "Error: Cannot start http listener\n"); | |
188 | } | |
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189 | |
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190 | log_ereport(LOG_INFORM, "webserver started"); |
1 | 191 | |
192 | return 0; | |
193 | } | |
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194 | |
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195 | void webserver_shutdown() { |
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196 | log_ereport(LOG_INFORM, "webserver shutdown"); |
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197 | |
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198 | // execute restart callbacks |
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199 | RestartCallback *re = atrestart; |
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200 | while(re) { |
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201 | re->func(re->data); |
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202 | re = re->next; |
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203 | } |
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204 | } |
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205 | |
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206 | void webserver_atrestart(void (*fn)(void *), void *data) { |
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207 | RestartCallback *cb = malloc(sizeof(RestartCallback)); |
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208 | cb->func = fn; |
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209 | cb->data = data; |
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210 | cb->next = NULL; |
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211 | |
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212 | if(atrestart) { |
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213 | RestartCallback *elm = atrestart; |
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214 | while(elm) { |
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215 | if(!elm->next) { |
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216 | elm->next = cb; |
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217 | break; |
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218 | } |
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219 | elm = elm->next; |
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220 | } |
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221 | } else { |
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222 | atrestart = cb; |
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223 | } |
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224 | } |
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225 | |
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226 | int nsapi_runtime_version() { |
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227 | return 303; |
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228 | } |
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229 | |
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230 | |
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231 | int ws_init_ssl() { |
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232 | // TODO: handle errors |
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233 | SSL_load_error_strings(); |
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234 | SSL_library_init(); |
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235 | OpenSSL_add_all_algorithms(); |
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236 | return 0; |
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237 | } |