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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "tool_setup.h"
#define ENABLE_CURLX_PRINTF
/* use our own printf() functions */
#include "curlx.h"
#include "tool_cfgable.h"
#include "tool_msgs.h"
#include "tool_cb_dbg.h"
#include "tool_util.h"
#include "memdebug.h" /* keep this as LAST include */
static void dump(const char *timebuf, const char *text,
FILE *stream, const unsigned char *ptr, size_t size,
trace tracetype, curl_infotype infotype);
/*
** callback for CURLOPT_DEBUGFUNCTION
*/
int tool_debug_cb(CURL *handle, curl_infotype type,
char *data, size_t size,
void *userdata)
{
struct OperationConfig *operation = userdata;
struct GlobalConfig *config = operation->global;
FILE *output = config->errors;
const char *text;
struct timeval tv;
char timebuf[20];
time_t secs;
(void)handle; /* not used */
if(config->tracetime) {
struct tm *now;
static time_t epoch_offset;
static int known_offset;
tv = tvnow();
if(!known_offset) {
epoch_offset = time(NULL) - tv.tv_sec;
known_offset = 1;
}
secs = epoch_offset + tv.tv_sec;
/* !checksrc! disable BANNEDFUNC 1 */
now = localtime(&secs); /* not thread safe but we don't care */
msnprintf(timebuf, sizeof(timebuf), "%02d:%02d:%02d.%06ld ",
now->tm_hour, now->tm_min, now->tm_sec, (long)tv.tv_usec);
}
else
timebuf[0] = 0;
if(!config->trace_stream) {
/* open for append */
if(!strcmp("-", config->trace_dump))
config->trace_stream = stdout;
else if(!strcmp("%", config->trace_dump))
/* Ok, this is somewhat hackish but we do it undocumented for now */
config->trace_stream = config->errors; /* aka stderr */
else {
config->trace_stream = fopen(config->trace_dump, FOPEN_WRITETEXT);
config->trace_fopened = TRUE;
}
}
if(config->trace_stream)
output = config->trace_stream;
if(!output) {
warnf(config, "Failed to create/open output");
return 0;
}
if(config->tracetype == TRACE_PLAIN) {
/*
* This is the trace look that is similar to what libcurl makes on its
* own.
*/
static const char * const s_infotype[] = {
"*", "<", ">", "{", "}", "{", "}"
};
static bool newl = FALSE;
static bool traced_data = FALSE;
switch(type) {
case CURLINFO_HEADER_OUT:
if(size > 0) {
size_t st = 0;
size_t i;
for(i = 0; i < size - 1; i++) {
if(data[i] == '\n') { /* LF */
if(!newl) {
fprintf(output, "%s%s ", timebuf, s_infotype[type]);
}
(void)fwrite(data + st, i - st + 1, 1, output);
st = i + 1;
newl = FALSE;
}
}
if(!newl)
fprintf(output, "%s%s ", timebuf, s_infotype[type]);
(void)fwrite(data + st, i - st + 1, 1, output);
}
newl = (size && (data[size - 1] != '\n')) ? TRUE : FALSE;
traced_data = FALSE;
break;
case CURLINFO_TEXT:
case CURLINFO_HEADER_IN:
if(!newl)
fprintf(output, "%s%s ", timebuf, s_infotype[type]);
(void)fwrite(data, size, 1, output);
newl = (size && (data[size - 1] != '\n')) ? TRUE : FALSE;
traced_data = FALSE;
break;
case CURLINFO_DATA_OUT:
case CURLINFO_DATA_IN:
case CURLINFO_SSL_DATA_IN:
case CURLINFO_SSL_DATA_OUT:
if(!traced_data) {
/* if the data is output to a tty and we're sending this debug trace
to stderr or stdout, we don't display the alert about the data not
being shown as the data _is_ shown then just not via this
function */
if(!config->isatty || ((output != stderr) && (output != stdout))) {
if(!newl)
fprintf(output, "%s%s ", timebuf, s_infotype[type]);
fprintf(output, "[%zu bytes data]\n", size);
newl = FALSE;
traced_data = TRUE;
}
}
break;
default: /* nada */
newl = FALSE;
traced_data = FALSE;
break;
}
return 0;
}
switch(type) {
case CURLINFO_TEXT:
fprintf(output, "%s== Info: %.*s", timebuf, (int)size, data);
/* FALLTHROUGH */
default: /* in case a new one is introduced to shock us */
return 0;
case CURLINFO_HEADER_OUT:
text = "=> Send header";
break;
case CURLINFO_DATA_OUT:
text = "=> Send data";
break;
case CURLINFO_HEADER_IN:
text = "<= Recv header";
break;
case CURLINFO_DATA_IN:
text = "<= Recv data";
break;
case CURLINFO_SSL_DATA_IN:
text = "<= Recv SSL data";
break;
case CURLINFO_SSL_DATA_OUT:
text = "=> Send SSL data";
break;
}
dump(timebuf, text, output, (unsigned char *) data, size, config->tracetype,
type);
return 0;
}
static void dump(const char *timebuf, const char *text,
FILE *stream, const unsigned char *ptr, size_t size,
trace tracetype, curl_infotype infotype)
{
size_t i;
size_t c;
unsigned int width = 0x10;
if(tracetype == TRACE_ASCII)
/* without the hex output, we can fit more on screen */
width = 0x40;
fprintf(stream, "%s%s, %zu bytes (0x%zx)\n", timebuf, text, size, size);
for(i = 0; i < size; i += width) {
fprintf(stream, "%04zx: ", i);
if(tracetype == TRACE_BIN) {
/* hex not disabled, show it */
for(c = 0; c < width; c++)
if(i + c < size)
fprintf(stream, "%02x ", ptr[i + c]);
else
fputs(" ", stream);
}
for(c = 0; (c < width) && (i + c < size); c++) {
/* check for 0D0A; if found, skip past and start a new line of output */
if((tracetype == TRACE_ASCII) &&
(i + c + 1 < size) && (ptr[i + c] == 0x0D) &&
(ptr[i + c + 1] == 0x0A)) {
i += (c + 2 - width);
break;
}
(void)infotype;
fprintf(stream, "%c", ((ptr[i + c] >= 0x20) && (ptr[i + c] < 0x7F)) ?
ptr[i + c] : UNPRINTABLE_CHAR);
/* check again for 0D0A, to avoid an extra \n if it's at width */
if((tracetype == TRACE_ASCII) &&
(i + c + 2 < size) && (ptr[i + c + 1] == 0x0D) &&
(ptr[i + c + 2] == 0x0A)) {
i += (c + 3 - width);
break;
}
}
fputc('\n', stream); /* newline */
}
fflush(stream);
}
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