quickjs-tart

quickjs-based runtime for wallet-core logic
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multi-debugcallback.c (4242B)

      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
      9  *
     10  * This software is licensed as described in the file COPYING, which
     11  * you should have received as part of this distribution. The terms
     12  * are also available at https://curl.se/docs/copyright.html.
     13  *
     14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     15  * copies of the Software, and permit persons to whom the Software is
     16  * furnished to do so, under the terms of the COPYING file.
     17  *
     18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     19  * KIND, either express or implied.
     20  *
     21  * SPDX-License-Identifier: curl
     22  *
     23  ***************************************************************************/
     24 /* <DESC>
     25  * multi interface and debug callback
     26  * </DESC>
     27  */
     28 
     29 #include <stdio.h>
     30 #include <string.h>
     31 
     32 /* curl stuff */
     33 #include <curl/curl.h>
     34 
     35 #define TRUE 1
     36 
     37 static void dump(const char *text, FILE *stream, unsigned char *ptr,
     38                  size_t size, char nohex)
     39 {
     40   size_t i;
     41   size_t c;
     42 
     43   unsigned int width = 0x10;
     44 
     45   if(nohex)
     46     /* without the hex output, we can fit more on screen */
     47     width = 0x40;
     48 
     49   fprintf(stream, "%s, %10.10lu bytes (0x%8.8lx)\n",
     50           text, (unsigned long)size, (unsigned long)size);
     51 
     52   for(i = 0; i < size; i += width) {
     53 
     54     fprintf(stream, "%4.4lx: ", (unsigned long)i);
     55 
     56     if(!nohex) {
     57       /* hex not disabled, show it */
     58       for(c = 0; c < width; c++)
     59         if(i + c < size)
     60           fprintf(stream, "%02x ", ptr[i + c]);
     61         else
     62           fputs("   ", stream);
     63     }
     64 
     65     for(c = 0; (c < width) && (i + c < size); c++) {
     66       /* check for 0D0A; if found, skip past and start a new line of output */
     67       if(nohex && (i + c + 1 < size) && ptr[i + c] == 0x0D &&
     68          ptr[i + c + 1] == 0x0A) {
     69         i += (c + 2 - width);
     70         break;
     71       }
     72       fprintf(stream, "%c",
     73               (ptr[i + c] >= 0x20) && (ptr[i + c] < 0x80) ? ptr[i + c] : '.');
     74       /* check again for 0D0A, to avoid an extra \n if it's at width */
     75       if(nohex && (i + c + 2 < size) && ptr[i + c + 1] == 0x0D &&
     76          ptr[i + c + 2] == 0x0A) {
     77         i += (c + 3 - width);
     78         break;
     79       }
     80     }
     81     fputc('\n', stream); /* newline */
     82   }
     83   fflush(stream);
     84 }
     85 
     86 static
     87 int my_trace(CURL *handle, curl_infotype type,
     88              unsigned char *data, size_t size,
     89              void *userp)
     90 {
     91   const char *text;
     92 
     93   (void)userp;
     94   (void)handle; /* prevent compiler warning */
     95 
     96   switch(type) {
     97   case CURLINFO_TEXT:
     98     fprintf(stderr, "== Info: %s", data);
     99     return 0;
    100   case CURLINFO_HEADER_OUT:
    101     text = "=> Send header";
    102     break;
    103   case CURLINFO_DATA_OUT:
    104     text = "=> Send data";
    105     break;
    106   case CURLINFO_HEADER_IN:
    107     text = "<= Recv header";
    108     break;
    109   case CURLINFO_DATA_IN:
    110     text = "<= Recv data";
    111     break;
    112   default: /* in case a new one is introduced to shock us */
    113     return 0;
    114   }
    115 
    116   dump(text, stderr, data, size, TRUE);
    117   return 0;
    118 }
    119 
    120 /*
    121  * Simply download an HTTP file.
    122  */
    123 int main(void)
    124 {
    125   CURL *http_handle;
    126   CURLM *multi_handle;
    127 
    128   int still_running = 0; /* keep number of running handles */
    129 
    130   http_handle = curl_easy_init();
    131 
    132   /* set the options (I left out a few, you get the point anyway) */
    133   curl_easy_setopt(http_handle, CURLOPT_URL, "https://www.example.com/");
    134 
    135   curl_easy_setopt(http_handle, CURLOPT_DEBUGFUNCTION, my_trace);
    136   curl_easy_setopt(http_handle, CURLOPT_VERBOSE, 1L);
    137 
    138   /* init a multi stack */
    139   multi_handle = curl_multi_init();
    140 
    141   /* add the individual transfers */
    142   curl_multi_add_handle(multi_handle, http_handle);
    143 
    144   do {
    145     CURLMcode mc = curl_multi_perform(multi_handle, &still_running);
    146 
    147     if(still_running)
    148       /* wait for activity, timeout or "nothing" */
    149       mc = curl_multi_poll(multi_handle, NULL, 0, 1000, NULL);
    150 
    151     if(mc)
    152       break;
    153 
    154   } while(still_running);
    155 
    156   curl_multi_cleanup(multi_handle);
    157 
    158   curl_easy_cleanup(http_handle);
    159 
    160   return 0;
    161 }