[352] | 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | ***************************************************************************/
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| 22 | #include "tool_setup.h"
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| 23 |
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| 24 | #define ENABLE_CURLX_PRINTF
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| 25 | /* use our own printf() functions */
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| 26 | #include "curlx.h"
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| 27 |
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| 28 | #include "tool_cfgable.h"
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| 29 | #include "tool_convert.h"
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| 30 | #include "tool_msgs.h"
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| 31 | #include "tool_cb_dbg.h"
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| 32 | #include "tool_util.h"
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| 33 |
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| 34 | #include "memdebug.h" /* keep this as LAST include */
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| 35 |
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| 36 | static void dump(const char *timebuf, const char *text,
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| 37 | FILE *stream, const unsigned char *ptr, size_t size,
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| 38 | trace tracetype, curl_infotype infotype);
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| 39 |
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| 40 | /*
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| 41 | ** callback for CURLOPT_DEBUGFUNCTION
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| 42 | */
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| 43 |
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| 44 | int tool_debug_cb(CURL *handle, curl_infotype type,
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| 45 | char *data, size_t size,
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| 46 | void *userdata)
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| 47 | {
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| 48 | struct OperationConfig *operation = userdata;
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| 49 | struct GlobalConfig *config = operation->global;
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| 50 | FILE *output = config->errors;
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| 51 | const char *text;
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| 52 | struct timeval tv;
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| 53 | struct tm *now;
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| 54 | char timebuf[20];
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| 55 | time_t secs;
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| 56 | static time_t epoch_offset;
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| 57 | static int known_offset;
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| 58 |
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| 59 | (void)handle; /* not used */
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| 60 |
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| 61 | if(config->tracetime) {
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| 62 | tv = tvnow();
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| 63 | if(!known_offset) {
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| 64 | epoch_offset = time(NULL) - tv.tv_sec;
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| 65 | known_offset = 1;
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| 66 | }
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| 67 | secs = epoch_offset + tv.tv_sec;
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| 68 | now = localtime(&secs); /* not thread safe but we don't care */
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| 69 | snprintf(timebuf, sizeof(timebuf), "%02d:%02d:%02d.%06ld ",
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| 70 | now->tm_hour, now->tm_min, now->tm_sec, (long)tv.tv_usec);
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| 71 | }
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| 72 | else
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| 73 | timebuf[0] = 0;
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| 74 |
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| 75 | if(!config->trace_stream) {
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| 76 | /* open for append */
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| 77 | if(!strcmp("-", config->trace_dump))
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| 78 | config->trace_stream = stdout;
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| 79 | else if(!strcmp("%", config->trace_dump))
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| 80 | /* Ok, this is somewhat hackish but we do it undocumented for now */
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| 81 | config->trace_stream = config->errors; /* aka stderr */
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| 82 | else {
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| 83 | config->trace_stream = fopen(config->trace_dump, FOPEN_WRITETEXT);
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| 84 | config->trace_fopened = TRUE;
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| 85 | }
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| 86 | }
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| 87 |
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| 88 | if(config->trace_stream)
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| 89 | output = config->trace_stream;
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| 90 |
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| 91 | if(!output) {
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| 92 | warnf(config, "Failed to create/open output");
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| 93 | return 0;
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| 94 | }
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| 95 |
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| 96 | if(config->tracetype == TRACE_PLAIN) {
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| 97 | /*
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| 98 | * This is the trace look that is similar to what libcurl makes on its
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| 99 | * own.
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| 100 | */
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| 101 | static const char * const s_infotype[] = {
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| 102 | "*", "<", ">", "{", "}", "{", "}"
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| 103 | };
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| 104 | size_t i;
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| 105 | size_t st = 0;
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| 106 | static bool newl = FALSE;
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| 107 | static bool traced_data = FALSE;
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| 108 |
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| 109 | switch(type) {
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| 110 | case CURLINFO_HEADER_OUT:
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| 111 | if(size > 0) {
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| 112 | for(i = 0; i < size - 1; i++) {
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| 113 | if(data[i] == '\n') { /* LF */
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| 114 | if(!newl) {
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| 115 | fprintf(output, "%s%s ", timebuf, s_infotype[type]);
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| 116 | }
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| 117 | (void)fwrite(data + st, i - st + 1, 1, output);
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| 118 | st = i + 1;
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| 119 | newl = FALSE;
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| 120 | }
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| 121 | }
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| 122 | if(!newl)
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| 123 | fprintf(output, "%s%s ", timebuf, s_infotype[type]);
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| 124 | (void)fwrite(data + st, i - st + 1, 1, output);
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| 125 | }
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| 126 | newl = (size && (data[size - 1] != '\n')) ? TRUE : FALSE;
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| 127 | traced_data = FALSE;
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| 128 | break;
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| 129 | case CURLINFO_TEXT:
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| 130 | case CURLINFO_HEADER_IN:
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| 131 | if(!newl)
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| 132 | fprintf(output, "%s%s ", timebuf, s_infotype[type]);
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| 133 | (void)fwrite(data, size, 1, output);
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| 134 | newl = (size && (data[size - 1] != '\n')) ? TRUE : FALSE;
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| 135 | traced_data = FALSE;
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| 136 | break;
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| 137 | case CURLINFO_DATA_OUT:
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| 138 | case CURLINFO_DATA_IN:
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| 139 | case CURLINFO_SSL_DATA_IN:
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| 140 | case CURLINFO_SSL_DATA_OUT:
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| 141 | if(!traced_data) {
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| 142 | /* if the data is output to a tty and we're sending this debug trace
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| 143 | to stderr or stdout, we don't display the alert about the data not
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| 144 | being shown as the data _is_ shown then just not via this
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| 145 | function */
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| 146 | if(!config->isatty || ((output != stderr) && (output != stdout))) {
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| 147 | if(!newl)
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| 148 | fprintf(output, "%s%s ", timebuf, s_infotype[type]);
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| 149 | fprintf(output, "[%zd bytes data]\n", size);
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| 150 | newl = FALSE;
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| 151 | traced_data = TRUE;
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| 152 | }
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| 153 | }
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| 154 | break;
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| 155 | default: /* nada */
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| 156 | newl = FALSE;
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| 157 | traced_data = FALSE;
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| 158 | break;
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| 159 | }
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| 160 |
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| 161 | return 0;
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| 162 | }
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| 163 |
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| 164 | #ifdef CURL_DOES_CONVERSIONS
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| 165 | /* Special processing is needed for CURLINFO_HEADER_OUT blocks
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| 166 | * if they contain both headers and data (separated by CRLFCRLF).
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| 167 | * We dump the header text and then switch type to CURLINFO_DATA_OUT.
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| 168 | */
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| 169 | if((type == CURLINFO_HEADER_OUT) && (size > 4)) {
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| 170 | size_t i;
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| 171 | for(i = 0; i < size - 4; i++) {
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| 172 | if(memcmp(&data[i], "\r\n\r\n", 4) == 0) {
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| 173 | /* dump everything through the CRLFCRLF as a sent header */
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| 174 | text = "=> Send header";
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| 175 | dump(timebuf, text, output, (unsigned char *)data, i + 4,
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| 176 | config->tracetype, type);
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| 177 | data += i + 3;
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| 178 | size -= i + 4;
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| 179 | type = CURLINFO_DATA_OUT;
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| 180 | data += 1;
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| 181 | break;
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| 182 | }
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| 183 | }
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| 184 | }
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| 185 | #endif /* CURL_DOES_CONVERSIONS */
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| 186 |
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| 187 | switch(type) {
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| 188 | case CURLINFO_TEXT:
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| 189 | fprintf(output, "%s== Info: %s", timebuf, data);
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| 190 | /* FALLTHROUGH */
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| 191 | default: /* in case a new one is introduced to shock us */
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| 192 | return 0;
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| 193 |
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| 194 | case CURLINFO_HEADER_OUT:
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| 195 | text = "=> Send header";
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| 196 | break;
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| 197 | case CURLINFO_DATA_OUT:
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| 198 | text = "=> Send data";
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| 199 | break;
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| 200 | case CURLINFO_HEADER_IN:
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| 201 | text = "<= Recv header";
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| 202 | break;
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| 203 | case CURLINFO_DATA_IN:
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| 204 | text = "<= Recv data";
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| 205 | break;
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| 206 | case CURLINFO_SSL_DATA_IN:
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| 207 | text = "<= Recv SSL data";
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| 208 | break;
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| 209 | case CURLINFO_SSL_DATA_OUT:
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| 210 | text = "=> Send SSL data";
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| 211 | break;
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| 212 | }
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| 213 |
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| 214 | dump(timebuf, text, output, (unsigned char *) data, size, config->tracetype,
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| 215 | type);
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| 216 | return 0;
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| 217 | }
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| 218 |
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| 219 | static void dump(const char *timebuf, const char *text,
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| 220 | FILE *stream, const unsigned char *ptr, size_t size,
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| 221 | trace tracetype, curl_infotype infotype)
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| 222 | {
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| 223 | size_t i;
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| 224 | size_t c;
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| 225 |
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| 226 | unsigned int width = 0x10;
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| 227 |
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| 228 | if(tracetype == TRACE_ASCII)
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| 229 | /* without the hex output, we can fit more on screen */
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| 230 | width = 0x40;
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| 231 |
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| 232 | fprintf(stream, "%s%s, %zd bytes (0x%zx)\n", timebuf, text, size, size);
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| 233 |
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| 234 | for(i = 0; i < size; i += width) {
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| 235 |
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| 236 | fprintf(stream, "%04zx: ", i);
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| 237 |
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| 238 | if(tracetype == TRACE_BIN) {
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| 239 | /* hex not disabled, show it */
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| 240 | for(c = 0; c < width; c++)
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| 241 | if(i + c < size)
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| 242 | fprintf(stream, "%02x ", ptr[i + c]);
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| 243 | else
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| 244 | fputs(" ", stream);
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| 245 | }
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| 246 |
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| 247 | for(c = 0; (c < width) && (i + c < size); c++) {
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| 248 | /* check for 0D0A; if found, skip past and start a new line of output */
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| 249 | if((tracetype == TRACE_ASCII) &&
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| 250 | (i + c + 1 < size) && (ptr[i + c] == 0x0D) &&
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| 251 | (ptr[i + c + 1] == 0x0A)) {
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| 252 | i += (c + 2 - width);
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| 253 | break;
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| 254 | }
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| 255 | #ifdef CURL_DOES_CONVERSIONS
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| 256 | /* repeat the 0D0A check above but use the host encoding for CRLF */
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| 257 | if((tracetype == TRACE_ASCII) &&
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| 258 | (i + c + 1 < size) && (ptr[i + c] == '\r') &&
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| 259 | (ptr[i + c + 1] == '\n')) {
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| 260 | i += (c + 2 - width);
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| 261 | break;
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| 262 | }
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| 263 | /* convert to host encoding and print this character */
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| 264 | fprintf(stream, "%c", convert_char(infotype, ptr[i + c]));
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| 265 | #else
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| 266 | (void)infotype;
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| 267 | fprintf(stream, "%c", ((ptr[i + c] >= 0x20) && (ptr[i + c] < 0x80)) ?
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| 268 | ptr[i + c] : UNPRINTABLE_CHAR);
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| 269 | #endif /* CURL_DOES_CONVERSIONS */
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| 270 | /* check again for 0D0A, to avoid an extra \n if it's at width */
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| 271 | if((tracetype == TRACE_ASCII) &&
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| 272 | (i + c + 2 < size) && (ptr[i + c + 1] == 0x0D) &&
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| 273 | (ptr[i + c + 2] == 0x0A)) {
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| 274 | i += (c + 3 - width);
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| 275 | break;
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| 276 | }
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| 277 | }
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| 278 | fputc('\n', stream); /* newline */
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| 279 | }
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| 280 | fflush(stream);
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| 281 | }
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| 282 |
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