Merging upstream version 1.46.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 869 deletions

diff --git a/aclk/https_client.c b/aclk/https_client.c
deleted file mode 100644
index 5385786b..00000000
--- a/aclk/https_client.c
+++ /dev/null
@@ -1,869 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "libnetdata/libnetdata.h"
-
-#include "https_client.h"
-
-#include "aclk_util.h"
-
-#include "daemon/global_statistics.h"
-
-#define DEFAULT_CHUNKED_RESPONSE_BUFFER_SIZE (4096)
-
-static const char *http_req_type_to_str(http_req_type_t req) {
-    switch (req) {
-        case HTTP_REQ_GET:
-            return "GET";
-        case HTTP_REQ_POST:
-            return "POST";
-        case HTTP_REQ_CONNECT:
-            return "CONNECT";
-        default:
-            return "unknown";
-    }
-}
-
-#define TRANSFER_ENCODING_CHUNKED (-2)
-
-#define HTTP_PARSE_CTX_INITIALIZER { .state = HTTP_PARSE_INITIAL, .content_length = -1, .http_code = 0 }
-void http_parse_ctx_create(http_parse_ctx *ctx)
-{
-    ctx->state = HTTP_PARSE_INITIAL;
-    ctx->content_length = -1;
-    ctx->http_code = 0;
-    ctx->headers = c_rhash_new(0);
-    ctx->flags = HTTP_PARSE_FLAGS_DEFAULT;
-}
-
-void http_parse_ctx_destroy(http_parse_ctx *ctx)
-{
-    c_rhash_iter_t iter;
-    const char *key;
-
-    c_rhash_iter_t_initialize(&iter);
-    while ( !c_rhash_iter_str_keys(ctx->headers, &iter, &key) ) {
-        void *val;
-        c_rhash_get_ptr_by_str(ctx->headers, key, &val);
-        freez(val);
-    }
-
-    c_rhash_destroy(ctx->headers);
-}
-
-#define POLL_TO_MS 100
-
-#define HTTP_LINE_TERM "\x0D\x0A"
-#define RESP_PROTO "HTTP/1.1 "
-#define HTTP_KEYVAL_SEPARATOR ": "
-#define HTTP_HDR_BUFFER_SIZE 1024
-#define PORT_STR_MAX_BYTES 12
-
-static int process_http_hdr(http_parse_ctx *parse_ctx, const char *key, const char *val)
-{
-    // currently we care only about specific headers
-    // we can skip the rest
-    if (parse_ctx->content_length < 0 && !strcmp("content-length", key)) {
-        if (parse_ctx->content_length == TRANSFER_ENCODING_CHUNKED) {
-            netdata_log_error("Content-length and transfer-encoding: chunked headers are mutually exclusive");
-            return 1;
-        }
-        if (parse_ctx->content_length != -1) {
-            netdata_log_error("Duplicate content-length header");
-            return 1;
-        }
-        parse_ctx->content_length = str2u(val);
-        if (parse_ctx->content_length < 0) {
-            netdata_log_error("Invalid content-length %d", parse_ctx->content_length);
-            return 1;
-        }
-        return 0;
-    }
-    if (!strcmp("transfer-encoding", key)) {
-        if (!strcmp("chunked", val)) {
-            if (parse_ctx->content_length != -1) {
-                netdata_log_error("Content-length and transfer-encoding: chunked headers are mutually exclusive");
-                return 1;
-            }
-            parse_ctx->content_length = TRANSFER_ENCODING_CHUNKED;
-        }
-        return 0;
-    }
-    char *val_cpy = strdupz(val);
-    c_rhash_insert_str_ptr(parse_ctx->headers, key, val_cpy);
-    return 0;
-}
-
-const char *get_http_header_by_name(http_parse_ctx *ctx, const char *name)
-{
-    const char *ret;
-    if (c_rhash_get_ptr_by_str(ctx->headers, name, (void**)&ret))
-        return NULL;
-
-    return ret;
-}
-
-static int parse_http_hdr(rbuf_t buf, http_parse_ctx *parse_ctx)
-{
-    int idx, idx_end;
-    char buf_key[HTTP_HDR_BUFFER_SIZE];
-    char buf_val[HTTP_HDR_BUFFER_SIZE];
-    char *ptr = buf_key;
-    if (!rbuf_find_bytes(buf, HTTP_LINE_TERM, strlen(HTTP_LINE_TERM), &idx_end)) {
-        netdata_log_error("CRLF expected");
-        return 1;
-    }
-
-    char *separator = rbuf_find_bytes(buf, HTTP_KEYVAL_SEPARATOR, strlen(HTTP_KEYVAL_SEPARATOR), &idx);
-    if (!separator) {
-        netdata_log_error("Missing Key/Value separator");
-        return 1;
-    }
-    if (idx >= HTTP_HDR_BUFFER_SIZE) {
-        netdata_log_error("Key name is too long");
-        return 1;
-    }
-
-    rbuf_pop(buf, buf_key, idx);
-    buf_key[idx] = 0;
-
-    rbuf_bump_tail(buf, strlen(HTTP_KEYVAL_SEPARATOR));
-    idx_end -= strlen(HTTP_KEYVAL_SEPARATOR) + idx;
-    if (idx_end >= HTTP_HDR_BUFFER_SIZE) {
-        netdata_log_error("Value of key \"%s\" too long", buf_key);
-        return 1;
-    }
-
-    rbuf_pop(buf, buf_val, idx_end);
-    buf_val[idx_end] = 0;
-
-    for (ptr = buf_key; *ptr; ptr++)
-        *ptr = tolower(*ptr);
-
-    if (process_http_hdr(parse_ctx, buf_key, buf_val))
-        return 1;
-
-    return 0;
-}
-
-static inline void chunked_response_buffer_grow_by(http_parse_ctx *parse_ctx, size_t size)
-{
-    if (unlikely(parse_ctx->chunked_response_size == 0)) {
-        parse_ctx->chunked_response = mallocz(size);
-        parse_ctx->chunked_response_size = size;
-        return;
-    }
-    parse_ctx->chunked_response = reallocz((void *)parse_ctx->chunked_response, parse_ctx->chunked_response_size + size);
-    parse_ctx->chunked_response_size += size;
-}
-
-static int process_chunked_content(rbuf_t buf, http_parse_ctx *parse_ctx)
-{
-    int idx;
-    size_t bytes_to_copy;
-
-    do {
-        switch (parse_ctx->chunked_content_state) {
-            case CHUNKED_CONTENT_CHUNK_SIZE:
-                if (!rbuf_find_bytes(buf, HTTP_LINE_TERM, strlen(HTTP_LINE_TERM), &idx)) {
-                    if (rbuf_bytes_available(buf) >= rbuf_get_capacity(buf))
-                        return HTTP_PARSE_ERROR;
-                    return HTTP_PARSE_NEED_MORE_DATA;
-                }
-                if (idx == 0) {
-                    parse_ctx->chunked_content_state = CHUNKED_CONTENT_FINAL_CRLF;
-                    continue;
-                }
-                if (idx >= HTTP_HDR_BUFFER_SIZE) {
-                    netdata_log_error("Chunk size is too long");
-                    return HTTP_PARSE_ERROR;
-                }
-                char buf_size[HTTP_HDR_BUFFER_SIZE];
-                rbuf_pop(buf, buf_size, idx);
-                buf_size[idx] = 0;
-                long chunk_size = strtol(buf_size, NULL, 16);
-                if (chunk_size < 0 || chunk_size == LONG_MAX) {
-                    netdata_log_error("Chunk size out of range");
-                    return HTTP_PARSE_ERROR;
-                }
-                parse_ctx->chunk_size = chunk_size;
-                if (parse_ctx->chunk_size == 0) {
-                    if (errno == EINVAL) {
-                        netdata_log_error("Invalid chunk size");
-                        return HTTP_PARSE_ERROR;
-                    }
-                    parse_ctx->chunked_content_state = CHUNKED_CONTENT_CHUNK_END_CRLF;
-                    continue;
-                }
-                parse_ctx->chunk_got = 0;
-                chunked_response_buffer_grow_by(parse_ctx, parse_ctx->chunk_size);
-                rbuf_bump_tail(buf, strlen(HTTP_LINE_TERM));
-                parse_ctx->chunked_content_state = CHUNKED_CONTENT_CHUNK_DATA;
-                // fallthrough
-            case CHUNKED_CONTENT_CHUNK_DATA:
-                if (!(bytes_to_copy = rbuf_bytes_available(buf)))
-                    return HTTP_PARSE_NEED_MORE_DATA;
-                if (bytes_to_copy > parse_ctx->chunk_size - parse_ctx->chunk_got)
-                    bytes_to_copy = parse_ctx->chunk_size - parse_ctx->chunk_got;
-                rbuf_pop(buf, parse_ctx->chunked_response + parse_ctx->chunked_response_written, bytes_to_copy);
-                parse_ctx->chunk_got += bytes_to_copy;
-                parse_ctx->chunked_response_written += bytes_to_copy;
-                if (parse_ctx->chunk_got != parse_ctx->chunk_size)
-                    continue;
-                parse_ctx->chunked_content_state = CHUNKED_CONTENT_CHUNK_END_CRLF;
-                // fallthrough
-            case CHUNKED_CONTENT_FINAL_CRLF:
-            case CHUNKED_CONTENT_CHUNK_END_CRLF:
-                if (rbuf_bytes_available(buf) < strlen(HTTP_LINE_TERM))
-                    return HTTP_PARSE_NEED_MORE_DATA;
-                char buf_crlf[strlen(HTTP_LINE_TERM)];
-                rbuf_pop(buf, buf_crlf, strlen(HTTP_LINE_TERM));
-                if (memcmp(buf_crlf, HTTP_LINE_TERM, strlen(HTTP_LINE_TERM))) {
-                    netdata_log_error("CRLF expected");
-                    return HTTP_PARSE_ERROR;
-                }
-                if (parse_ctx->chunked_content_state == CHUNKED_CONTENT_FINAL_CRLF) {
-                    if (parse_ctx->chunked_response_size != parse_ctx->chunked_response_written)
-                        netdata_log_error("Chunked response size mismatch");
-                    chunked_response_buffer_grow_by(parse_ctx, 1);
-                    parse_ctx->chunked_response[parse_ctx->chunked_response_written] = 0;
-                    return HTTP_PARSE_SUCCESS;
-                }
-                if (parse_ctx->chunk_size == 0) {
-                    parse_ctx->chunked_content_state = CHUNKED_CONTENT_FINAL_CRLF;
-                    continue;
-                }
-                parse_ctx->chunked_content_state = CHUNKED_CONTENT_CHUNK_SIZE;
-                continue;
-        }
-    } while(1);
-}
-
-http_parse_rc parse_http_response(rbuf_t buf, http_parse_ctx *parse_ctx)
-{
-    int idx;
-    char rc[4];
-
-    do {
-        if (parse_ctx->state != HTTP_PARSE_CONTENT && !rbuf_find_bytes(buf, HTTP_LINE_TERM, strlen(HTTP_LINE_TERM), &idx))
-            return HTTP_PARSE_NEED_MORE_DATA;
-        switch (parse_ctx->state) {
-            case HTTP_PARSE_INITIAL:
-                if (rbuf_memcmp_n(buf, RESP_PROTO, strlen(RESP_PROTO))) {
-                    netdata_log_error("Expected response to start with \"%s\"", RESP_PROTO);
-                    return HTTP_PARSE_ERROR;
-                }
-                rbuf_bump_tail(buf, strlen(RESP_PROTO));
-                if (rbuf_pop(buf, rc, 4) != 4) {
-                    netdata_log_error("Expected HTTP status code");
-                    return HTTP_PARSE_ERROR;
-                }
-                if (rc[3] != ' ') {
-                    netdata_log_error("Expected space after HTTP return code");
-                    return HTTP_PARSE_ERROR;
-                }
-                rc[3] = 0;
-                parse_ctx->http_code = atoi(rc);
-                if (parse_ctx->http_code < 100 || parse_ctx->http_code >= 600) {
-                    netdata_log_error("HTTP code not in range 100 to 599");
-                    return HTTP_PARSE_ERROR;
-                }
-
-                rbuf_find_bytes(buf, HTTP_LINE_TERM, strlen(HTTP_LINE_TERM), &idx);
-
-                rbuf_bump_tail(buf, idx + strlen(HTTP_LINE_TERM));
-
-                parse_ctx->state = HTTP_PARSE_HEADERS;
-                break;
-            case HTTP_PARSE_HEADERS:
-                if (!idx) {
-                    parse_ctx->state = HTTP_PARSE_CONTENT;
-                    rbuf_bump_tail(buf, strlen(HTTP_LINE_TERM));
-                    break;
-                }
-                if (parse_http_hdr(buf, parse_ctx))
-                    return HTTP_PARSE_ERROR;
-                rbuf_find_bytes(buf, HTTP_LINE_TERM, strlen(HTTP_LINE_TERM), &idx);
-                rbuf_bump_tail(buf, idx + strlen(HTTP_LINE_TERM));
-                break;
-            case HTTP_PARSE_CONTENT:
-                // replies like CONNECT etc. do not have content
-                if (parse_ctx->content_length == TRANSFER_ENCODING_CHUNKED)
-                    return process_chunked_content(buf, parse_ctx);
-
-                if (parse_ctx->content_length < 0)
-                    return HTTP_PARSE_SUCCESS;
-
-                if (parse_ctx->flags & HTTP_PARSE_FLAG_DONT_WAIT_FOR_CONTENT)
-                    return HTTP_PARSE_SUCCESS;
-
-                if (rbuf_bytes_available(buf) >= (size_t)parse_ctx->content_length)
-                    return HTTP_PARSE_SUCCESS;
-                return HTTP_PARSE_NEED_MORE_DATA;
-        }
-    } while(1);
-}
-
-typedef struct https_req_ctx {
-    https_req_t *request;
-
-    int sock;
-    rbuf_t buf_rx;
-
-    struct pollfd poll_fd;
-
-    SSL_CTX *ssl_ctx;
-    SSL *ssl;
-
-    size_t written;
-
-    int self_signed_allowed;
-
-    http_parse_ctx parse_ctx;
-
-    time_t req_start_time;
-} https_req_ctx_t;
-
-static int https_req_check_timedout(https_req_ctx_t *ctx) {
-    if (now_realtime_sec() > ctx->req_start_time + ctx->request->timeout_s) {
-        netdata_log_error("request timed out");
-        return 1;
-    }
-    return 0;
-}
-
-static char *_ssl_err_tos(int err)
-{
-    switch(err){
-        case SSL_ERROR_SSL:
-            return "SSL_ERROR_SSL";
-        case SSL_ERROR_WANT_READ:
-            return "SSL_ERROR_WANT_READ";
-        case SSL_ERROR_WANT_WRITE:
-            return "SSL_ERROR_WANT_WRITE";
-        case SSL_ERROR_NONE:
-            return "SSL_ERROR_NONE";
-        case SSL_ERROR_ZERO_RETURN:
-            return "SSL_ERROR_ZERO_RETURN";
-        case SSL_ERROR_WANT_CONNECT:
-            return "SSL_ERROR_WANT_CONNECT";
-        case SSL_ERROR_WANT_ACCEPT:
-            return "SSL_ERROR_WANT_ACCEPT";
-    }
-    return "Unknown!!!";
-}
-
-static int socket_write_all(https_req_ctx_t *ctx, char *data, size_t data_len) {
-    ctx->written = 0;
-    ctx->poll_fd.events = POLLOUT;
-
-    do {
-        int ret = poll(&ctx->poll_fd, 1, POLL_TO_MS);
-        if (ret < 0) {
-            netdata_log_error("poll error");
-            return 1;
-        }
-        if (ret == 0) {
-            if (https_req_check_timedout(ctx)) {
-                netdata_log_error("Poll timed out");
-                return 2;
-            }
-            continue;
-        }
-
-        ret = write(ctx->sock, &data[ctx->written], data_len - ctx->written);
-        if (ret > 0) {
-            ctx->written += ret;
-        } else if (errno != EAGAIN && errno != EWOULDBLOCK) {
-            netdata_log_error("Error writing to socket");
-            return 3;
-        }
-    } while (ctx->written < data_len);
-
-    return 0;
-}
-
-static int ssl_write_all(https_req_ctx_t *ctx, char *data, size_t data_len) {
-    ctx->written = 0;
-    ctx->poll_fd.events |= POLLOUT;
-
-    do {
-        int ret = poll(&ctx->poll_fd, 1, POLL_TO_MS);
-        if (ret < 0) {
-            netdata_log_error("poll error");
-            return 1;
-        }
-        if (ret == 0) {
-            if (https_req_check_timedout(ctx)) {
-                netdata_log_error("Poll timed out");
-                return 2;
-            }
-            continue;
-        }
-        ctx->poll_fd.events = 0;
-
-        ret = SSL_write(ctx->ssl, &data[ctx->written], data_len - ctx->written);
-        if (ret > 0) {
-            ctx->written += ret;
-        } else {
-            ret = SSL_get_error(ctx->ssl, ret);
-            switch (ret) {
-                case SSL_ERROR_WANT_READ:
-                    ctx->poll_fd.events |= POLLIN;
-                    break;
-                case SSL_ERROR_WANT_WRITE:
-                    ctx->poll_fd.events |= POLLOUT;
-                    break;
-                default:
-                    netdata_log_error("SSL_write Err: %s", _ssl_err_tos(ret));
-                    return 3;
-            }
-        }
-    } while (ctx->written < data_len);
-
-    return 0;
-}
-
-static inline int https_client_write_all(https_req_ctx_t *ctx, char *data, size_t data_len) {
-    if (ctx->ssl_ctx)
-        return ssl_write_all(ctx, data, data_len);
-    return socket_write_all(ctx, data, data_len);
-}
-
-static int read_parse_response(https_req_ctx_t *ctx) {
-    int ret;
-    char *ptr;
-    size_t size;
-
-    ctx->poll_fd.events = POLLIN;
-    do {
-        ret = poll(&ctx->poll_fd, 1, POLL_TO_MS);
-        if (ret < 0) {
-            netdata_log_error("poll error");
-            return 1;
-        }
-        if (ret == 0) {
-            if (https_req_check_timedout(ctx)) {
-                netdata_log_error("Poll timed out");
-                return 2;
-            }
-            if (!ctx->ssl_ctx)
-                continue;
-        }
-        ctx->poll_fd.events = 0;
-
-        do {
-            ptr = rbuf_get_linear_insert_range(ctx->buf_rx, &size);
-
-            if (ctx->ssl_ctx)
-                ret = SSL_read(ctx->ssl, ptr, size);
-            else
-                ret = read(ctx->sock, ptr, size);
-
-            if (ret > 0) {
-                rbuf_bump_head(ctx->buf_rx, ret);
-            } else {
-                if (ctx->ssl_ctx) {
-                    ret = SSL_get_error(ctx->ssl, ret);
-                    switch (ret) {
-                        case SSL_ERROR_WANT_READ:
-                            ctx->poll_fd.events |= POLLIN;
-                            break;
-                        case SSL_ERROR_WANT_WRITE:
-                            ctx->poll_fd.events |= POLLOUT;
-                            break;
-                        default:
-                            netdata_log_error("SSL_read Err: %s", _ssl_err_tos(ret));
-                            return 3;
-                    }
-                } else {
-                    if (errno != EAGAIN && errno != EWOULDBLOCK) {
-                        netdata_log_error("write error");
-                        return 3;
-                    }
-                    ctx->poll_fd.events |= POLLIN;
-                }
-            }
-        } while (ctx->poll_fd.events == 0 && rbuf_bytes_free(ctx->buf_rx) > 0);
-    } while (!(ret = parse_http_response(ctx->buf_rx, &ctx->parse_ctx)));
-
-    if (ret != HTTP_PARSE_SUCCESS) {
-        netdata_log_error("Error parsing HTTP response");
-        return 1;
-    }
-
-    return 0;
-}
-
-#define TX_BUFFER_SIZE 8192
-#define RX_BUFFER_SIZE (TX_BUFFER_SIZE*2)
-static int handle_http_request(https_req_ctx_t *ctx) {
-    BUFFER *hdr = buffer_create(TX_BUFFER_SIZE, &netdata_buffers_statistics.buffers_aclk);
-    int rc = 0;
-
-    http_parse_ctx_create(&ctx->parse_ctx);
-
-    // Prepare data to send
-    switch (ctx->request->request_type) {
-        case HTTP_REQ_CONNECT:
-            buffer_strcat(hdr, "CONNECT ");
-            break;
-        case HTTP_REQ_GET:
-            buffer_strcat(hdr, "GET ");
-            break;
-        case HTTP_REQ_POST:
-            buffer_strcat(hdr, "POST ");
-            break;
-        default:
-            netdata_log_error("Unknown HTTPS request type!");
-            rc = 1;
-            goto err_exit;
-    }
-
-    if (ctx->request->request_type == HTTP_REQ_CONNECT) {
-        buffer_strcat(hdr, ctx->request->host);
-        buffer_sprintf(hdr, ":%d", ctx->request->port);
-    } else {
-        buffer_strcat(hdr, ctx->request->url);
-    }
-
-    buffer_strcat(hdr, HTTP_1_1 HTTP_ENDL);
-
-    //TODO Headers!
-    if (ctx->request->request_type != HTTP_REQ_CONNECT) {
-        buffer_sprintf(hdr, "Host: %s\x0D\x0A", ctx->request->host);
-    }
-    buffer_strcat(hdr, "User-Agent: Netdata/rocks newhttpclient\x0D\x0A");
-
-    if (ctx->request->request_type == HTTP_REQ_POST && ctx->request->payload && ctx->request->payload_size) {
-        buffer_sprintf(hdr, "Content-Length: %zu\x0D\x0A", ctx->request->payload_size);
-    }
-    if (ctx->request->proxy_username) {
-        size_t creds_plain_len = strlen(ctx->request->proxy_username) + strlen(ctx->request->proxy_password) + 1 /* ':' */;
-        char *creds_plain = callocz(1, creds_plain_len + 1);
-        char *ptr = creds_plain;
-        strcpy(ptr, ctx->request->proxy_username);
-        ptr += strlen(ctx->request->proxy_username);
-        *ptr++ = ':';
-        strcpy(ptr, ctx->request->proxy_password);
-
-        int creds_base64_len = (((4 * creds_plain_len / 3) + 3) & ~3);
-        // OpenSSL encoder puts newline every 64 output bytes
-        // we remove those but during encoding we need that space in the buffer
-        creds_base64_len += (1+(creds_base64_len/64)) * strlen("\n");
-        char *creds_base64 = callocz(1, creds_base64_len + 1);
-        base64_encode_helper((unsigned char*)creds_base64, &creds_base64_len, (unsigned char*)creds_plain, creds_plain_len);
-        buffer_sprintf(hdr, "Proxy-Authorization: Basic %s\x0D\x0A", creds_base64);
-        freez(creds_plain);
-    }
-
-    buffer_strcat(hdr, "\x0D\x0A");
-
-    // Send the request
-    if (https_client_write_all(ctx, hdr->buffer, hdr->len)) {
-        netdata_log_error("Couldn't write HTTP request header into SSL connection");
-        rc = 2;
-        goto err_exit;
-    }
-
-    if (ctx->request->request_type == HTTP_REQ_POST && ctx->request->payload && ctx->request->payload_size) {
-        if (https_client_write_all(ctx, ctx->request->payload, ctx->request->payload_size)) {
-            netdata_log_error("Couldn't write payload into SSL connection");
-            rc = 3;
-            goto err_exit;
-        }
-    }
-
-    // Read The Response
-    if (read_parse_response(ctx)) {
-        netdata_log_error("Error reading or parsing response from server");
-        if (ctx->parse_ctx.chunked_response)
-            freez(ctx->parse_ctx.chunked_response);
-        rc = 4;
-        goto err_exit;
-    }
-
-err_exit:
-    buffer_free(hdr);
-    return rc;
-}
-
-static int cert_verify_callback(int preverify_ok, X509_STORE_CTX *ctx)
-{
-    X509 *err_cert;
-    int err, depth;
-    char *err_str;
-
-    if (!preverify_ok) {
-        err = X509_STORE_CTX_get_error(ctx);
-        depth = X509_STORE_CTX_get_error_depth(ctx);
-        err_cert = X509_STORE_CTX_get_current_cert(ctx);
-        err_str = X509_NAME_oneline(X509_get_subject_name(err_cert), NULL, 0);
-
-        netdata_log_error("Cert Chain verify error:num=%d:%s:depth=%d:%s", err,
-                 X509_verify_cert_error_string(err), depth, err_str);
-
-        free(err_str);
-    }
-
-#ifdef ACLK_SSL_ALLOW_SELF_SIGNED
-    if (!preverify_ok && err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
-    {
-        preverify_ok = 1;
-        netdata_log_error("Self Signed Certificate Accepted as the agent was built with ACLK_SSL_ALLOW_SELF_SIGNED");
-    }
-#endif
-
-    return preverify_ok;
-}
-
-int https_request(https_req_t *request, https_req_response_t *response) {
-    int rc = 1, ret;
-    char connect_port_str[PORT_STR_MAX_BYTES];
-
-    const char *connect_host = request->proxy_host ? request->proxy_host : request->host;
-    int connect_port = request->proxy_host ? request->proxy_port : request->port;
-    struct timeval timeout = { .tv_sec = request->timeout_s, .tv_usec = 0 };
-
-    https_req_ctx_t *ctx = callocz(1, sizeof(https_req_ctx_t));
-    ctx->req_start_time = now_realtime_sec();
-
-    ctx->buf_rx = rbuf_create(RX_BUFFER_SIZE);
-    if (!ctx->buf_rx) {
-        netdata_log_error("Couldn't allocate buffer for RX data");
-        goto exit_req_ctx;
-    }
-
-    snprintfz(connect_port_str, PORT_STR_MAX_BYTES, "%d", connect_port);
-
-    ctx->sock = connect_to_this_ip46(IPPROTO_TCP, SOCK_STREAM, connect_host, 0, connect_port_str, &timeout);
-    if (ctx->sock < 0) {
-        netdata_log_error("Error connecting TCP socket to \"%s\"", connect_host);
-        goto exit_buf_rx;
-    }
-
-    if (fcntl(ctx->sock, F_SETFL, fcntl(ctx->sock, F_GETFL, 0) | O_NONBLOCK) == -1) {
-        netdata_log_error("Error setting O_NONBLOCK to TCP socket.");
-        goto exit_sock;
-    }
-
-    ctx->poll_fd.fd = ctx->sock;
-
-    // Do the CONNECT if proxy is used
-    if (request->proxy_host) {
-        https_req_t req = HTTPS_REQ_T_INITIALIZER;
-        req.request_type = HTTP_REQ_CONNECT;
-        req.timeout_s = request->timeout_s;
-        req.host = request->host;
-        req.port = request->port;
-        req.url = request->url;
-        req.proxy_username = request->proxy_username;
-        req.proxy_password = request->proxy_password;
-        ctx->request = &req;
-        if (handle_http_request(ctx)) {
-            netdata_log_error("Failed to CONNECT with proxy");
-            http_parse_ctx_destroy(&ctx->parse_ctx);
-            goto exit_sock;
-        }
-        if (ctx->parse_ctx.http_code != 200) {
-            netdata_log_error("Proxy didn't return 200 OK (got %d)", ctx->parse_ctx.http_code);
-            http_parse_ctx_destroy(&ctx->parse_ctx);
-            goto exit_sock;
-        }
-        http_parse_ctx_destroy(&ctx->parse_ctx);
-        netdata_log_info("Proxy accepted CONNECT upgrade");
-    }
-    ctx->request = request;
-
-    ctx->ssl_ctx = netdata_ssl_create_client_ctx(0);
-    if (ctx->ssl_ctx==NULL) {
-        netdata_log_error("Cannot allocate SSL context");
-        goto exit_sock;
-    }
-
-    if (!SSL_CTX_set_default_verify_paths(ctx->ssl_ctx)) {
-        netdata_log_error("Error setting default verify paths");
-        goto exit_CTX;
-    }
-    SSL_CTX_set_verify(ctx->ssl_ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, cert_verify_callback);
-
-    ctx->ssl = SSL_new(ctx->ssl_ctx);
-    if (ctx->ssl==NULL) {
-        netdata_log_error("Cannot allocate SSL");
-        goto exit_CTX;
-    }
-
-    if (!SSL_set_tlsext_host_name(ctx->ssl, connect_host)) {
-        netdata_log_error("Error setting TLS SNI host");
-        goto exit_CTX;
-    }
-
-    SSL_set_fd(ctx->ssl, ctx->sock);
-    ret = SSL_connect(ctx->ssl);
-    if (ret != -1 && ret != 1) {
-        netdata_log_error("SSL could not connect");
-        goto exit_SSL;
-    }
-    if (ret == -1) {
-        // expected as underlying socket is non blocking!
-        // consult SSL_connect documentation for details
-        int ec = SSL_get_error(ctx->ssl, ret);
-        if (ec != SSL_ERROR_WANT_READ && ec != SSL_ERROR_WANT_WRITE) {
-            netdata_log_error("Failed to start SSL connection");
-            goto exit_SSL;
-        }
-    }
-
-    // The actual request here
-    if (handle_http_request(ctx)) {
-        netdata_log_error("Couldn't process request");
-        http_parse_ctx_destroy(&ctx->parse_ctx);
-        goto exit_SSL;
-    }
-    http_parse_ctx_destroy(&ctx->parse_ctx);
-    response->http_code = ctx->parse_ctx.http_code;
-    if (ctx->parse_ctx.content_length == TRANSFER_ENCODING_CHUNKED) {
-        response->payload_size = ctx->parse_ctx.chunked_response_size;
-        response->payload = ctx->parse_ctx.chunked_response;
-    }
-    if (ctx->parse_ctx.content_length > 0) {
-        response->payload_size = ctx->parse_ctx.content_length;
-        response->payload = mallocz(response->payload_size + 1);
-        ret = rbuf_pop(ctx->buf_rx, response->payload, response->payload_size);
-        if (ret != (int)response->payload_size) {
-            netdata_log_error("Payload size doesn't match remaining data on the buffer!");
-            response->payload_size = ret;
-        }
-        // normally we take payload as it is and copy it
-        // but for convenience in cases where payload is sth. like
-        // json we add terminating zero so that user of the data
-        // doesn't have to convert to C string (0 terminated)
-        // other uses still have correct payload_size and can copy
-        // only exact data without affixed 0x00
-        ((char*)response->payload)[response->payload_size] = 0; // mallocz(response->payload_size + 1);
-    }
-    netdata_log_info("HTTPS \"%s\" request to \"%s\" finished with HTTP code: %d", http_req_type_to_str(ctx->request->request_type), ctx->request->host, response->http_code);
-
-    rc = 0;
-
-exit_SSL:
-    SSL_free(ctx->ssl);
-exit_CTX:
-    SSL_CTX_free(ctx->ssl_ctx);
-exit_sock:
-    close(ctx->sock);
-exit_buf_rx:
-    rbuf_free(ctx->buf_rx);
-exit_req_ctx:
-    freez(ctx);
-    return rc;
-}
-
-void https_req_response_free(https_req_response_t *res) {
-    freez(res->payload);
-}
-
-void https_req_response_init(https_req_response_t *res) {
-    res->http_code = 0;
-    res->payload = NULL;
-    res->payload_size = 0;
-}
-
-static inline char *UNUSED_FUNCTION(min_non_null)(char *a, char *b) {
-    if (!a)
-        return b;
-    if (!b)
-        return a;
-    return (a < b ? a : b);
-}
-
-#define URI_PROTO_SEPARATOR "://"
-#define URL_PARSER_LOG_PREFIX "url_parser "
-
-static int parse_host_port(url_t *url) {
-    char *ptr = strrchr(url->host, ':');
-    if (ptr) {
-        size_t port_len = strlen(ptr + 1);
-        if (!port_len) {
-            netdata_log_error(URL_PARSER_LOG_PREFIX ": specified but no port number");
-            return 1;
-        }
-        if (port_len > 5 /* MAX port length is 5digit long in decimal */) {
-            netdata_log_error(URL_PARSER_LOG_PREFIX "port # is too long");
-            return 1;
-        }
-        *ptr = 0;
-        if (!strlen(url->host)) {
-            netdata_log_error(URL_PARSER_LOG_PREFIX "host empty after removing port");
-            return 1;
-        }
-        url->port = atoi (ptr + 1);
-    }
-    return 0;
-}
-
-static inline void port_by_proto(url_t *url) {
-    if (url->port)
-        return;
-    if (!url->proto)
-        return;
-    if (!strcmp(url->proto, "http")) {
-        url->port = 80;
-        return;
-    }
-    if (!strcmp(url->proto, "https")) {
-        url->port = 443;
-        return;
-    }
-}
-
-#define STRDUPZ_2PTR(dest, start, end)                                                                                 \
-    {                                                                                                                  \
-        dest = mallocz(1 + end - start);                                                                               \
-        memcpy(dest, start, end - start);                                                                              \
-        dest[end - start] = 0;                                                                                         \
-    }
-
-int url_parse(const char *url, url_t *parsed) {
-    const char *start = url;
-    const char *end = strstr(url, URI_PROTO_SEPARATOR);
-
-    if (end) {
-        if (end == start) {
-            netdata_log_error(URL_PARSER_LOG_PREFIX "found " URI_PROTO_SEPARATOR " without protocol specified");
-            return 1;
-        }
-
-        STRDUPZ_2PTR(parsed->proto, start, end)
-        start = end + strlen(URI_PROTO_SEPARATOR);
-    }
-
-    end = strchr(start, '/');
-    if (!end)
-        end = start + strlen(start);
-    
-    if (start == end) {
-        netdata_log_error(URL_PARSER_LOG_PREFIX "Host empty");
-        return 1;
-    }
-
-    STRDUPZ_2PTR(parsed->host, start, end);
-
-    if (parse_host_port(parsed))
-        return 1;
-
-    if (!*end) {
-        parsed->path = strdupz("/");
-        port_by_proto(parsed);
-        return 0;
-    }
-
-    parsed->path = strdupz(end);
-    port_by_proto(parsed);
-    return 0;
-}
-
-void url_t_destroy(url_t *url) {
-    freez(url->host);
-    freez(url->path);
-    freez(url->proto);
-}