openssl/crypto/trace.c

32  * BIO sink object, also called the trace channel. Instead of a BIO object,
34  * internal trace channel is attached, which simply calls the registered
40 static long trace_ctrl(BIO *channel, int cmd, long argl, void *argp);
64 static int trace_write(BIO *channel,
67     struct trace_data_st *ctx = BIO_get_data(channel);
75 static int trace_puts(BIO *channel, const char *str)
79     if (trace_write(channel, str, strlen(str), &written))
85 static long trace_ctrl(BIO *channel, int cmd, long argl, void *argp)
87     struct trace_data_st *ctx = BIO_get_data(channel);
101 static int trace_free(BIO *channel)
103     if (channel == NULL)
105     OPENSSL_free(BIO_get_data(channel));
173 /* We use one trace channel for each trace category */
197         OSSL_TRACE2(TRACE, "Attach channel %p to category '%s'\n",
218         OSSL_TRACE2(TRACE, "Detach channel %p from category '%s'\n",
242 static int set_trace_data(int category, int type, BIO **channel,
268     if (channel != NULL && curr_channel != NULL) {
283     if (channel != NULL && curr_channel != NULL) {
302     if (channel != NULL && *channel != NULL) {
304         trace_channels[category].bio = *channel;
307          * as those may fail, and then the caller is mislead to free *channel.
312     if (channel != NULL && *channel != NULL) {
313         attach_cb(category, CHANNEL, *channel);
339     BIO *channel = NULL;
347         set_trace_data(category, 0, &channel, &prefix, &suffix,
350     set_trace_data(OSSL_TRACE_CATEGORY_TRACE, 0, &channel,
357 int OSSL_trace_set_channel(int category, BIO *channel)
361         return set_trace_data(category, SIMPLE_CHANNEL, &channel, NULL, NULL,
373                     "Attach channel %p to category '%s' (with callback)\n",
394     BIO *channel = NULL;
401         if ((channel = BIO_new(&trace_method)) == NULL
410         BIO_set_data(channel, trace_data);
413     if (!set_trace_data(category, CALLBACK_CHANNEL, &channel, NULL, NULL,
420     BIO_free(channel);
471     BIO *channel = NULL;
479     channel = trace_channels[category].bio;
482     if (channel != NULL) {
485         current_channel = channel;
489                 (void)BIO_puts(channel, prefix);
490                 (void)BIO_puts(channel, "\n");
494             (void)BIO_ctrl(channel, OSSL_TRACE_CTRL_BEGIN,
500     return channel;
503 void OSSL_trace_end(int category, BIO * channel)
512     if (channel != NULL
513         && ossl_assert(channel == current_channel)) {
514         (void)BIO_flush(channel);
518                 (void)BIO_puts(channel, suffix);
519                 (void)BIO_puts(channel, "\n");
523             (void)BIO_ctrl(channel, OSSL_TRACE_CTRL_END,