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diff --git a/comm/third_party/libgpg-error/tests/t-logging.c b/comm/third_party/libgpg-error/tests/t-logging.c
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+/* t-logging.c - Check the logging interface
+ * Copyright (C) 2018 g10 Code GmbH
+ *
+ * This file is part of Libgpg-error.
+ *
+ * Libgpg-error is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Libgpg-error is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <unistd.h>
+
+#define PGM "t-logging"
+#include "t-common.h"
+
+/* The memory based estream we use for logging. */
+static estream_t logmemfp;
+
+
+static const char *
+my_strusage (int level)
+{
+ const char *p;
+
+ switch (level)
+ {
+ case 9: p = "LGPL-2.1-or-later"; break;
+ case 11: p = PGM; break;
+ default: p = NULL;
+ }
+ return p;
+}
+
+
+/* Read all data from the log stream into a new malloced buffer and return
+ * that buffer. The buffer is always 0 terminated. Either returns a
+ * string or dies. The stream will be truncated to zero. */
+static char *
+log_to_string (void)
+{
+#define NCHUNK 1024
+ estream_t stream = gpgrt_log_get_stream ();
+ char *buffer;
+ size_t bufsize, buflen;
+ size_t nread;
+
+ gpgrt_log_flush ();
+ gpgrt_rewind (stream);
+
+ buffer = NULL;
+ buflen = bufsize = 0;
+ do
+ {
+ bufsize += NCHUNK;
+ buffer = realloc (buffer, bufsize+1);
+ if (!buffer)
+ die ("malloc failed at line %d\n", __LINE__);
+
+ nread = gpgrt_fread (buffer + buflen, 1, NCHUNK, stream);
+ if (nread < NCHUNK && gpgrt_ferror (stream))
+ die ("fread failed at line %d: %s\n", __LINE__,
+ gpg_strerror (gpg_err_code_from_syserror ()));
+ buflen += nread;
+ }
+ while (nread == NCHUNK);
+ buffer[nread] = 0;
+
+ if (strlen (buffer) != buflen)
+ fail ("stream_to_string detected an embedded nul");
+
+ gpgrt_ftruncate (stream, 0);
+ return buffer;
+#undef NCHUNK
+}
+
+
+static void
+check_log_info (void)
+{
+ char *logbuf;
+
+ log_info ("first log\n");
+ logbuf = log_to_string ();
+ if (strcmp (logbuf, "t-logging: first log\n"))
+ fail ("log_info test failed at line %d\n", __LINE__);
+ free (logbuf);
+
+ /* The second line should not have a LF. */
+ log_info ("second log line");
+ log_info ("third log line");
+ logbuf = log_to_string ();
+ if (strcmp (logbuf, ("t-logging: second log line\n"
+ "t-logging: third log line")))
+ fail ("log_info test failed at line %d\n", __LINE__);
+ free (logbuf);
+
+ /* Now a multi line log. */
+ log_info ("This is log line 1\nand 2\nand 3\n");
+ logbuf = log_to_string ();
+ if (strcmp (logbuf, ("t-logging: This is log line 1\n"
+ "and 2\n"
+ "and 3\n")))
+ fail ("log_info test failed at line %d\n", __LINE__);
+ free (logbuf);
+
+ /* With arguments. */
+ log_info ("file '%s' line %d: %s\n", "/foo/bar.txt", 20, "not found");
+ logbuf = log_to_string ();
+ if (strcmp (logbuf, "t-logging: file '/foo/bar.txt' line 20: not found\n"))
+ fail ("log_info test failed at line %d\n", __LINE__);
+ free (logbuf);
+
+ /* With arguments and a control char in the string arg. */
+ log_info ("file '%s' line %d: %s\n", "/foo/bar.txt\b", 20, "not found");
+ logbuf = log_to_string ();
+ if (strcmp (logbuf,
+ "t-logging: file '/foo/bar.txt\\b' line 20: not found\n"))
+ fail ("log_info test failed at line %d\n", __LINE__);
+ free (logbuf);
+
+ /* With arguments and the prefix in a string arg. */
+ log_info ("file '%s': %s\n", "/foo/bar.txt\nt-logging", "not \x01 found");
+ logbuf = log_to_string ();
+ if (strcmp (logbuf,
+ "t-logging: file '/foo/bar.txt\\nt-logging': not \\x01 found\n"))
+ fail ("log_info test failed at line %d\n", __LINE__);
+ free (logbuf);
+
+ /* With arguments and byte with bit 7 set in a string arg. */
+ log_info ("file '%s': %s\n", "/foo/bar.txt\n", "not \x81 found");
+ logbuf = log_to_string ();
+ if (strcmp (logbuf,
+ "t-logging: file '/foo/bar.txt\\n': not \x81 found\n"))
+ fail ("log_info test failed at line %d\n", __LINE__);
+ /* show ("===>%s<===\n", logbuf); */
+
+ free (logbuf);
+}
+
+
+static void
+check_with_pid (void)
+{
+ char testbuf[100];
+ char *logbuf;
+
+ snprintf (testbuf, sizeof testbuf, "t-logging[%u]: ",
+ (unsigned int)getpid ());
+
+ log_info ("first log\n");
+ logbuf = log_to_string ();
+ if (strncmp (logbuf, testbuf, strlen (testbuf))
+ || strcmp (logbuf+strlen (testbuf), "first log\n"))
+ fail ("log_with_pid test failed at line %d\n", __LINE__);
+ free (logbuf);
+
+ log_info ("This is log line 1\nand 2\nand 3\n");
+ logbuf = log_to_string ();
+ if (strncmp (logbuf, testbuf, strlen (testbuf))
+ || strcmp (logbuf+strlen (testbuf), ("This is log line 1\n"
+ "and 2\n"
+ "and 3\n")))
+ fail ("log_with_pid test failed at line %d\n", __LINE__);
+ free (logbuf);
+}
+
+
+static void
+check_log_error (void)
+{
+ char *logbuf;
+
+ if (log_get_errorcount (0))
+ fail ("log_get_errorcount() != 0 at line %d\n", __LINE__);
+
+ log_error ("Hola, something went wrong\n");
+ if (log_get_errorcount (0) != 1)
+ fail ("log_get_errorcount() != 1 at line %d\n", __LINE__);
+ logbuf = log_to_string ();
+ if (strcmp (logbuf, "t-logging: Hola, something went wrong\n"))
+ fail ("log_info test failed at line %d\n", __LINE__);
+ free (logbuf);
+ if (log_get_errorcount (0) != 1)
+ fail ("log_get_errorcount() != 1 at line %d\n", __LINE__);
+ if (log_get_errorcount (1) != 1) /* note: clear returns old value. */
+ fail ("log_get_errorcount() != 1 at line %d\n", __LINE__);
+ if (log_get_errorcount (0))
+ fail ("log_get_errorcount() != 0 after clear at line %d\n", __LINE__);
+}
+
+
+int
+main (int argc, char **argv)
+{
+ gpgrt_opt_t opts[] = {
+ ARGPARSE_x ('v', "verbose", NONE, 0, "Print more diagnostics"),
+ ARGPARSE_s_n('d', "debug", "Flyswatter"),
+ ARGPARSE_end()
+ };
+ gpgrt_argparse_t pargs = { &argc, &argv, 0 };
+
+ gpgrt_set_strusage (my_strusage);
+ gpgrt_log_set_prefix (gpgrt_strusage (11), GPGRT_LOG_WITH_PREFIX);
+
+ while (gpgrt_argparse (NULL, &pargs, opts))
+ {
+ switch (pargs.r_opt)
+ {
+ case 'v': verbose++; break;
+ case 'd': debug++; break;
+ default : pargs.err = ARGPARSE_PRINT_ERROR; break;
+ }
+ }
+ gpgrt_argparse (NULL, &pargs, NULL);
+
+ show ("testing logging using a memory log stream\n");
+ logmemfp = gpgrt_fopenmem (0, "w+b");
+ if (!logmemfp)
+ die ("fopenmem failed at line %d\n", __LINE__);
+ gpgrt_log_set_sink (NULL, logmemfp, -1);
+
+ check_log_info ();
+ gpgrt_log_set_prefix (NULL, GPGRT_LOG_WITH_PREFIX|GPGRT_LOG_WITH_PID);
+ check_with_pid ();
+ gpgrt_log_set_prefix (NULL, GPGRT_LOG_WITH_PREFIX);
+ check_log_error ();
+
+ /* FIXME: Add more tests. */
+
+ show ("testing logging finished\n");
+ return !!errorcount;
+}
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