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286 lines
10 KiB
286 lines
10 KiB
/*
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* lws-minimal-secure-streams-proxy
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*
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* Written in 2010-2020 by Andy Green <andy@warmcat.com>
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*
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* This file is made available under the Creative Commons CC0 1.0
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* Universal Public Domain Dedication.
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*
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*
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* This is the proxy part for examples built to use it to connect to... it has
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* the policy and the core SS function, but it doesn't contain any of the user
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* code "business logic"... that's in the clients.
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*
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* The proxy side has the policy and performs the onward connection proxying
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* fulfilment. The clients state the streamtype name they want and ask for the
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* client to do the connection part.
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*
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* Rideshare information is being parsed out at the proxy side; the SSS RX part
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* also brings with it rideshare names.
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*
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* Metadata is passed back over SSS from the client in the TX messages for the
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* proxy to use per the policy.
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*/
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#include <libwebsockets.h>
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#include <string.h>
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#include <signal.h>
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static int interrupted, bad = 1, port = 0 /* unix domain socket */;
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static const char *ibind = NULL; /* default to unix domain skt "proxy.ss.lws" */
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static lws_state_notify_link_t nl;
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/*
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* We just define enough policy so it can fetch the latest one securely
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*/
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static const char * const default_ss_policy =
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"{"
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"\"release\":" "\"01234567\","
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"\"product\":" "\"myproduct\","
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"\"schema-version\":" "1,"
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"\"retry\": [" /* named backoff / retry strategies */
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"{\"default\": {"
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"\"backoff\": [" "1000,"
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"2000,"
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"3000,"
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"5000,"
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"10000"
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"],"
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"\"conceal\":" "5,"
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"\"jitterpc\":" "20,"
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"\"svalidping\":" "30,"
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"\"svalidhup\":" "35"
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"}}"
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"],"
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"\"certs\": [" /* named individual certificates in BASE64 DER */
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/*
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* Let's Encrypt certs for warmcat.com / libwebsockets.org
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*
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* We fetch the real policy from there using SS and switch to
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* using that.
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*/
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"{\"isrg_root_x1\": \"" /* ISRG ROOT X1 */
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"MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAw"
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"TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh"
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"cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTUwNjA0MTEwNDM4"
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"WhcNMzUwNjA0MTEwNDM4WjBPMQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJu"
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"ZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBY"
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"MTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAK3oJHP0FDfzm54rVygc"
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"h77ct984kIxuPOZXoHj3dcKi/vVqbvYATyjb3miGbESTtrFj/RQSa78f0uoxmyF+"
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"0TM8ukj13Xnfs7j/EvEhmkvBioZxaUpmZmyPfjxwv60pIgbz5MDmgK7iS4+3mX6U"
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"A5/TR5d8mUgjU+g4rk8Kb4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sW"
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"T8KOEUt+zwvo/7V3LvSye0rgTBIlDHCNAymg4VMk7BPZ7hm/ELNKjD+Jo2FR3qyH"
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"B5T0Y3HsLuJvW5iB4YlcNHlsdu87kGJ55tukmi8mxdAQ4Q7e2RCOFvu396j3x+UC"
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"B5iPNgiV5+I3lg02dZ77DnKxHZu8A/lJBdiB3QW0KtZB6awBdpUKD9jf1b0SHzUv"
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"KBds0pjBqAlkd25HN7rOrFleaJ1/ctaJxQZBKT5ZPt0m9STJEadao0xAH0ahmbWn"
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"OlFuhjuefXKnEgV4We0+UXgVCwOPjdAvBbI+e0ocS3MFEvzG6uBQE3xDk3SzynTn"
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"jh8BCNAw1FtxNrQHusEwMFxIt4I7mKZ9YIqioymCzLq9gwQbooMDQaHWBfEbwrbw"
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"qHyGO0aoSCqI3Haadr8faqU9GY/rOPNk3sgrDQoo//fb4hVC1CLQJ13hef4Y53CI"
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"rU7m2Ys6xt0nUW7/vGT1M0NPAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNV"
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"HRMBAf8EBTADAQH/MB0GA1UdDgQWBBR5tFnme7bl5AFzgAiIyBpY9umbbjANBgkq"
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"hkiG9w0BAQsFAAOCAgEAVR9YqbyyqFDQDLHYGmkgJykIrGF1XIpu+ILlaS/V9lZL"
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"ubhzEFnTIZd+50xx+7LSYK05qAvqFyFWhfFQDlnrzuBZ6brJFe+GnY+EgPbk6ZGQ"
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"3BebYhtF8GaV0nxvwuo77x/Py9auJ/GpsMiu/X1+mvoiBOv/2X/qkSsisRcOj/KK"
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"NFtY2PwByVS5uCbMiogziUwthDyC3+6WVwW6LLv3xLfHTjuCvjHIInNzktHCgKQ5"
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"ORAzI4JMPJ+GslWYHb4phowim57iaztXOoJwTdwJx4nLCgdNbOhdjsnvzqvHu7Ur"
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"TkXWStAmzOVyyghqpZXjFaH3pO3JLF+l+/+sKAIuvtd7u+Nxe5AW0wdeRlN8NwdC"
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"jNPElpzVmbUq4JUagEiuTDkHzsxHpFKVK7q4+63SM1N95R1NbdWhscdCb+ZAJzVc"
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"oyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq"
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"4RgqsahDYVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPA"
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"mRGunUHBcnWEvgJBQl9nJEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57d"
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"emyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc="
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"\"},"
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"{\"LEX3_isrg_root_x1\": \"" /* LE X3 signed by ISRG X1 root */
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"MIIFjTCCA3WgAwIBAgIRANOxciY0IzLc9AUoUSrsnGowDQYJKoZIhvcNAQELBQAw"
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"TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh"
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"cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTYxMDA2MTU0MzU1"
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"WhcNMjExMDA2MTU0MzU1WjBKMQswCQYDVQQGEwJVUzEWMBQGA1UEChMNTGV0J3Mg"
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"RW5jcnlwdDEjMCEGA1UEAxMaTGV0J3MgRW5jcnlwdCBBdXRob3JpdHkgWDMwggEi"
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"MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCc0wzwWuUuR7dyXTeDs2hjMOrX"
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"NSYZJeG9vjXxcJIvt7hLQQWrqZ41CFjssSrEaIcLo+N15Obzp2JxunmBYB/XkZqf"
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"89B4Z3HIaQ6Vkc/+5pnpYDxIzH7KTXcSJJ1HG1rrueweNwAcnKx7pwXqzkrrvUHl"
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"Npi5y/1tPJZo3yMqQpAMhnRnyH+lmrhSYRQTP2XpgofL2/oOVvaGifOFP5eGr7Dc"
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"Gu9rDZUWfcQroGWymQQ2dYBrrErzG5BJeC+ilk8qICUpBMZ0wNAxzY8xOJUWuqgz"
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"uEPxsR/DMH+ieTETPS02+OP88jNquTkxxa/EjQ0dZBYzqvqEKbbUC8DYfcOTAgMB"
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"AAGjggFnMIIBYzAOBgNVHQ8BAf8EBAMCAYYwEgYDVR0TAQH/BAgwBgEB/wIBADBU"
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"BgNVHSAETTBLMAgGBmeBDAECATA/BgsrBgEEAYLfEwEBATAwMC4GCCsGAQUFBwIB"
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"FiJodHRwOi8vY3BzLnJvb3QteDEubGV0c2VuY3J5cHQub3JnMB0GA1UdDgQWBBSo"
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"SmpjBH3duubRObemRWXv86jsoTAzBgNVHR8ELDAqMCigJqAkhiJodHRwOi8vY3Js"
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"LnJvb3QteDEubGV0c2VuY3J5cHQub3JnMHIGCCsGAQUFBwEBBGYwZDAwBggrBgEF"
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"BQcwAYYkaHR0cDovL29jc3Aucm9vdC14MS5sZXRzZW5jcnlwdC5vcmcvMDAGCCsG"
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"AQUFBzAChiRodHRwOi8vY2VydC5yb290LXgxLmxldHNlbmNyeXB0Lm9yZy8wHwYD"
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"VR0jBBgwFoAUebRZ5nu25eQBc4AIiMgaWPbpm24wDQYJKoZIhvcNAQELBQADggIB"
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"ABnPdSA0LTqmRf/Q1eaM2jLonG4bQdEnqOJQ8nCqxOeTRrToEKtwT++36gTSlBGx"
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"A/5dut82jJQ2jxN8RI8L9QFXrWi4xXnA2EqA10yjHiR6H9cj6MFiOnb5In1eWsRM"
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"UM2v3e9tNsCAgBukPHAg1lQh07rvFKm/Bz9BCjaxorALINUfZ9DD64j2igLIxle2"
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"DPxW8dI/F2loHMjXZjqG8RkqZUdoxtID5+90FgsGIfkMpqgRS05f4zPbCEHqCXl1"
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"eO5HyELTgcVlLXXQDgAWnRzut1hFJeczY1tjQQno6f6s+nMydLN26WuU4s3UYvOu"
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"OsUxRlJu7TSRHqDC3lSE5XggVkzdaPkuKGQbGpny+01/47hfXXNB7HntWNZ6N2Vw"
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"p7G6OfY+YQrZwIaQmhrIqJZuigsrbe3W+gdn5ykE9+Ky0VgVUsfxo52mwFYs1JKY"
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"2PGDuWx8M6DlS6qQkvHaRUo0FMd8TsSlbF0/v965qGFKhSDeQoMpYnwcmQilRh/0"
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"ayLThlHLN81gSkJjVrPI0Y8xCVPB4twb1PFUd2fPM3sA1tJ83sZ5v8vgFv2yofKR"
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"PB0t6JzUA81mSqM3kxl5e+IZwhYAyO0OTg3/fs8HqGTNKd9BqoUwSRBzp06JMg5b"
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"rUCGwbCUDI0mxadJ3Bz4WxR6fyNpBK2yAinWEsikxqEt"
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"\"}"
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"],"
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"\"trust_stores\": [" /* named cert chains */
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"{"
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"\"name\": \"le_via_isrg\","
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"\"stack\": ["
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"\"isrg_root_x1\","
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"\"LEX3_isrg_root_x1\""
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"]"
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"}"
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"],"
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"\"s\": ["
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"{\"fetch_policy\": {"
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"\"endpoint\":" "\"warmcat.com\","
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"\"port\":" "443,"
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"\"protocol\":" "\"h1\","
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"\"http_method\":" "\"GET\","
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"\"http_url\":" "\"policy/minimal-proxy.json\","
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"\"tls\":" "true,"
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"\"opportunistic\":" "true,"
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"\"retry\":" "\"default\","
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"\"tls_trust_store\":" "\"le_via_isrg\""
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"}}"
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"}"
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;
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static const char *canned_root_token_payload =
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"grant_type=refresh_token"
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"&refresh_token=Atzr|IwEBIJedGXjDqsU_vMxykqOMg"
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"SHfYe3CPcedueWEMWSDMaDnEmiW8RlR1Kns7Cb4B-TOSnqp7ifVsY4BMY2B8tpHfO39XP"
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"zfu9HapGjTR458IyHX44FE71pWJkGZ79uVBpljP4sazJuk8XS3Oe_yLnm_DIO6fU1nU3Y"
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"0flYmsOiOAQE_gRk_pdlmEtHnpMA-9rLw3mkY5L89Ty9kUygBsiFaYatouROhbsTn8-jW"
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"k1zZLUDpT6ICtBXSnrCIg0pUbZevPFhTwdXd6eX-u4rq0W-XaDvPWFO7au-iPb4Zk5eZE"
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"iX6sissYrtNmuEXc2uHu7MnQO1hHCaTdIO2CANVumf-PHSD8xseamyh04sLV5JgFzY45S"
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"KvKMajiUZuLkMokOx86rjC2Hdkx5DO7G-dbG1ufBDG-N79pFMSs7Ck5pc283IdLoJkCQc"
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"AGvTX8o8I29QqkcGou-9TKhOJmpX8As94T61ok0UqqEKPJ7RhfQHHYdCtsdwxgvfVr9qI"
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"xL_hDCcTho8opCVX-6QhJHl6SQFlTw13"
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"&client_id="
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"amzn1.application-oa2-client.4823334c434b4190a2b5a42c07938a2d";
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static int
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app_system_state_nf(lws_state_manager_t *mgr, lws_state_notify_link_t *link,
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int current, int target)
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{
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struct lws_context *context = lws_system_context_from_system_mgr(mgr);
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lws_system_blob_t *ab = lws_system_get_blob(context,
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LWS_SYSBLOB_TYPE_AUTH, 1 /* AUTH_IDX_ROOT */);
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size_t size;
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/*
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* For the things we care about, let's notice if we are trying to get
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* past them when we haven't solved them yet, and make the system
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* state wait while we trigger the dependent action.
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*/
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switch (target) {
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case LWS_SYSTATE_REGISTERED:
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size = lws_system_blob_get_size(ab);
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if (size)
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break;
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/* let's register our canned root token so auth can use it */
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lws_system_blob_direct_set(ab,
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(const uint8_t *)canned_root_token_payload,
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strlen(canned_root_token_payload));
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break;
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case LWS_SYSTATE_OPERATIONAL:
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if (current == LWS_SYSTATE_OPERATIONAL)
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/*
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* At this point we have DHCP, ntp, system auth token
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* and we can reasonably create the proxy
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*/
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if (lws_ss_proxy_create(context, ibind, port)) {
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lwsl_err("%s: failed to create ss proxy\n",
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__func__);
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return -1;
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}
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break;
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case LWS_SYSTATE_POLICY_INVALID:
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/*
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* This is a NOP since we used direct set... but in a real
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* system this could easily change to be done on the heap, then
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* this would be important
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*/
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lws_system_blob_destroy(lws_system_get_blob(context,
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LWS_SYSBLOB_TYPE_AUTH,
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1 /* AUTH_IDX_ROOT */));
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break;
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}
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return 0;
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}
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static lws_state_notify_link_t * const app_notifier_list[] = {
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&nl, NULL
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};
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static void
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sigint_handler(int sig)
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{
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interrupted = 1;
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}
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int main(int argc, const char **argv)
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{
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int n = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE;
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struct lws_context_creation_info info;
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struct lws_context *context;
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const char *p;
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signal(SIGINT, sigint_handler);
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if ((p = lws_cmdline_option(argc, argv, "-d")))
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logs = atoi(p);
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/* connect to ssproxy via UDS by default, else via tcp with this port */
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if ((p = lws_cmdline_option(argc, argv, "-p")))
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port = atoi(p);
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/* UDS "proxy.ss.lws" in abstract namespace, else this socket path;
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* when -p given this can specify the network interface to bind to */
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if ((p = lws_cmdline_option(argc, argv, "-i")))
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ibind = p;
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lws_set_log_level(logs, NULL);
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lwsl_user("LWS secure streams Proxy [-d<verb>]\n");
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memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
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info.options = LWS_SERVER_OPTION_EXPLICIT_VHOSTS |
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LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
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info.fd_limit_per_thread = 1 + 6 + 1;
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info.pss_policies_json = default_ss_policy;
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info.port = CONTEXT_PORT_NO_LISTEN;
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#if defined(LWS_WITH_DETAILED_LATENCY)
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info.detailed_latency_cb = lws_det_lat_plot_cb;
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info.detailed_latency_filepath = "/tmp/lws-latency-ssproxy";
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#endif
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/* integrate us with lws system state management when context created */
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nl.name = "app";
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nl.notify_cb = app_system_state_nf;
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info.register_notifier_list = app_notifier_list;
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context = lws_create_context(&info);
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if (!context) {
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lwsl_err("lws init failed\n");
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return 1;
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}
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/* the event loop */
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while (n >= 0 && !interrupted)
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n = lws_service(context, 0);
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bad = 0;
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lws_context_destroy(context);
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lwsl_user("Completed: %s\n", bad ? "failed" : "OK");
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return bad;
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}
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