src/curl_debug_gcal.c

   1 #include <stdio.h>
   2 #include "curl_debug_gcal.h"
   3
   4 /* Coments: this came straight from libcurl examples directory and
   5  * will print information to stderr when executing curl_easy_perform.
   6  * I'm not completely sure about its author, but I'm assuming that it uses
   7  * the same license as curl itself (X11/MIT).
   8  *
   9  * I made only small changes in space and formating.
  10  *
  11  * Adenilson Cavalcanti
  12  */
  13
  14 /*****************************************************************************
  15  *                                  _   _ ____  _
  16  *  Project                     ___| | | |  _ \| |
  17  *                             / __| | | | |_) | |
  18  *                            | (__| |_| |  _ <| |___
  19  *                             \___|\___/|_| \_\_____|
  20  *
  21  * $Id: debug.c,v 1.2 2006-10-20 21:26:10 bagder Exp $
  22  */
  23
  24
  25 static void curl_debug_dump(const char *text,
  26                  FILE *stream, unsigned char *ptr, size_t size,
  27                  char nohex)
  28 {
  29         size_t i;
  30         size_t c;
  31
  32         unsigned int width=0x10;
  33
  34         /* without the hex output, we can fit more on screen */
  35         if (nohex)
  36                 width = 0x40;
  37
  38         fprintf(stream, "%s, %zd bytes (0x%zx)\n", text, size, size);
  39
  40         for (i = 0; i< size; i+= width) {
  41
  42                 fprintf(stream, "%04zx: ", i);
  43
  44                 if (!nohex) {
  45                         /* hex not disabled, show it */
  46                         for(c = 0; c < width; c++)
  47                                 if(i+c < size)
  48                                         fprintf(stream, "%02x ", ptr[i+c]);
  49                                 else
  50                                         fputs("   ", stream);
  51                 }
  52
  53                 for(c = 0; (c < width) && (i+c < size); c++) {
  54                         /* check for 0D0A; if found, skip past and start
  55                          * a new line of output
  56                          */
  57                         if (nohex && (i+c+1 < size) &&
  58                             ptr[i+c]==0x0D && ptr[i+c+1]==0x0A) {
  59                                 i+=(c+2-width);
  60                                 break;
  61                         }
  62
  63                         fprintf(stream, "%c",
  64                                 (ptr[i+c]>=0x20) &&
  65                                 (ptr[i+c]<0x80)?ptr[i+c]:'.');
  66
  67                         /* check again for 0D0A, to avoid an extra
  68                          * \n if it's at width
  69                          */
  70                         if (nohex && (i+c+2 < size) &&
  71                             ptr[i+c+1]==0x0D && ptr[i+c+2]==0x0A) {
  72                                 i+=(c+3-width);
  73                                 break;
  74                         }
  75                 }
  76
  77                 fputc('\n', stream); /* newline */
  78         }
  79
  80         fflush(stream);
  81 }
  82
  83 int curl_debug_gcal_trace(CURL *handle, curl_infotype type,
  84                           unsigned char *data, size_t size,
  85                           void *userp)
  86 {
  87         struct data_curl_debug *config = (struct data_curl_debug *)userp;
  88         const char *text;
  89         (void)handle; /* prevent compiler warning */
  90
  91         switch (type) {
  92         case CURLINFO_TEXT:
  93                 fprintf(stderr, "== Info: %s", data);
  94         default: /* in case a new one is introduced to shock us */
  95                 return 0;
  96
  97         case CURLINFO_HEADER_OUT:
  98                 text = "=> Send header";
  99                 break;
 100         case CURLINFO_DATA_OUT:
 101                 text = "=> Send data";
 102                 break;
 103         case CURLINFO_SSL_DATA_OUT:
 104                 text = "=> Send SSL 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         case CURLINFO_SSL_DATA_IN:
 113                 text = "<= Recv SSL data";
 114                 break;
 115         }
 116
 117         curl_debug_dump(text, stderr, data, size, config->trace_ascii);
 118         return 0;
 119 }