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- Log -----------------------------------------------------------------
commitdiff 
http://git.netsurf-browser.org/netsurf.git/commit/?id=91f4f89d4c864c6ce0170d60a13a29aed56fea5d
commit 91f4f89d4c864c6ce0170d60a13a29aed56fea5d
Merge: 6a3f7a3 fe00eac
Author: Michael Drake <[email protected]>
Commit: Michael Drake <[email protected]>

    Merge branch 'tlsa/date'



-----------------------------------------------------------------------

Summary of changes:
 Makefile                  |   19 +-
 Makefile.defaults         |    8 +
 content/fetch.c           |    2 +
 content/fetchers/Makefile |    6 +-
 test/Makefile             |   14 +-
 test/time.c               |  423 +++++++++++++++++++++
 utils/ascii.h             |  358 ++++++++++++++++++
 utils/nsurl.c             |  127 +------
 utils/time.c              |  889 ++++++++++++++++++++++++++++++++++++++++++++-
 utils/url.c               |    4 +-
 10 files changed, 1718 insertions(+), 132 deletions(-)
 create mode 100644 test/time.c
 create mode 100644 utils/ascii.h

diff --git a/Makefile b/Makefile
index 226bf4f..60810e1 100644
--- a/Makefile
+++ b/Makefile
@@ -511,14 +511,6 @@ $(eval $(call pkg_config_find_and_add,libcss,CSS))
 $(eval $(call pkg_config_find_and_add,libdom,DOM))
 $(eval $(call pkg_config_find_and_add,libnsutils,nsutils))
 $(eval $(call pkg_config_find_and_add,libutf8proc,utf8proc))
-$(eval $(call pkg_config_find_and_add,openssl,OpenSSL))
-# freemint does not support pkg-config for libcurl
-ifeq ($(HOST),mint)
-    CFLAGS += $(shell curl-config --cflags)
-    LDFLAGS += $(shell curl-config --libs)
-else
-    $(eval $(call pkg_config_find_and_add,libcurl,Curl))
-endif
 
 # Common libraries without pkg-config support
 LDFLAGS += -lz
@@ -529,9 +521,20 @@ LDFLAGS += -lz
 NETSURF_FEATURE_PNG_CFLAGS := -DWITH_PNG
 NETSURF_FEATURE_BMP_CFLAGS := -DWITH_BMP
 NETSURF_FEATURE_GIF_CFLAGS := -DWITH_GIF
+NETSURF_FEATURE_CURL_CFLAGS := -DWITH_CURL
 NETSURF_FEATURE_NSSVG_CFLAGS := -DWITH_NS_SVG
+NETSURF_FEATURE_OPENSSL_CFLAGS := -DWITH_OPENSSL
 NETSURF_FEATURE_ROSPRITE_CFLAGS := -DWITH_NSSPRITE
 
+$(eval $(call pkg_config_find_and_add_enabled,OPENSSL,openssl,OpenSSL))
+# freemint does not support pkg-config for libcurl
+ifeq ($(HOST),mint)
+    CFLAGS += $(shell curl-config --cflags)
+    LDFLAGS += $(shell curl-config --libs)
+else
+    $(eval $(call pkg_config_find_and_add_enabled,CURL,libcurl,Curl))
+endif
+
 $(eval $(call pkg_config_find_and_add_enabled,PNG,libpng,PNG))
 $(eval $(call pkg_config_find_and_add_enabled,BMP,libnsbmp,BMP))
 $(eval $(call pkg_config_find_and_add_enabled,GIF,libnsgif,GIF))
diff --git a/Makefile.defaults b/Makefile.defaults
index 196e192..1651a2d 100644
--- a/Makefile.defaults
+++ b/Makefile.defaults
@@ -31,6 +31,14 @@
 # Options relating to all versions of NetSurf
 # ----------------------------------------------------------------------------
 
+# Enable NetSurf's use of libcurl for fetching over http(s)
+# Valid options: YES, NO
+NETSURF_USE_CURL := YES
+
+# Enable NetSurf's use of openssl for fetching over https
+# Valid options: YES, NO
+NETSURF_USE_OPENSSL := YES
+
 # Enable NetSurf's use of libnsbmp for displaying BMPs and ICOs
 # Valid options: YES, NO
 NETSURF_USE_BMP := YES
diff --git a/content/fetch.c b/content/fetch.c
index 11adf9c..93c7de2 100644
--- a/content/fetch.c
+++ b/content/fetch.c
@@ -290,10 +290,12 @@ nserror fetcher_init(void)
 {
        nserror ret;
 
+#ifdef WITH_CURL
        ret = fetch_curl_register();
        if (ret != NSERROR_OK) {
                return ret;
        }
+#endif
 
        ret = fetch_data_register();
        if (ret != NSERROR_OK) {
diff --git a/content/fetchers/Makefile b/content/fetchers/Makefile
index 8551542..9c84793 100644
--- a/content/fetchers/Makefile
+++ b/content/fetchers/Makefile
@@ -1,8 +1,10 @@
 # Content fetchers sources
 
-S_FETCHERS := curl.c data.c file.c about.c resource.c
+S_FETCHERS_YES := data.c file.c about.c resource.c
+S_FETCHERS_NO :=
+S_FETCHERS_$(NETSURF_USE_CURL) += curl.c
 
-S_FETCHERS := $(addprefix content/fetchers/,$(S_FETCHERS))
+S_FETCHERS := $(addprefix content/fetchers/,$(S_FETCHERS_YES))
 
 # The following files depend on the testament
 content/fetchers/about.c: testament $(OBJROOT)/testament.h
diff --git a/test/Makefile b/test/Makefile
index 0253f4d..d62e2fd 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -1,7 +1,16 @@
 #
 # NetSurf unit tests
 
-TESTS := nsurl urldbtest nsoption bloom hashtable urlescape utils messages 
#llcache
+TESTS := \
+       nsurl \
+       urldbtest \
+       nsoption \
+       bloom \
+       hashtable \
+       urlescape \
+       utils \
+       messages \
+       time #llcache
 
 # nsurl sources
 nsurl_SRCS := utils/corestrings.c utils/nsurl.c utils/idna.c \
@@ -44,6 +53,9 @@ urlescape_SRCS := utils/url.c test/log.c test/urlescape.c
 utils_SRCS := utils/utils.c utils/messages.c utils/hashtable.c \
                test/log.c test/utils.c
 
+# time test sources
+time_SRCS := utils/time.c test/log.c test/time.c
+
 # Coverage builds need additional flags
 ifeq ($(MAKECMDGOALS),coverage)
   COV_CFLAGS ?= -fprofile-arcs -ftest-coverage -O0
diff --git a/test/time.c b/test/time.c
new file mode 100644
index 0000000..34cfac0
--- /dev/null
+++ b/test/time.c
@@ -0,0 +1,423 @@
+/*
+ * Copyright 2016 Michael Drake <[email protected]>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * \file
+ * Test time operations.
+ */
+
+#include <stdlib.h>
+#include <check.h>
+
+#include "utils/errors.h"
+#include "utils/time.h"
+
+#define NELEMS(x)  (sizeof(x) / sizeof((x)[0]))
+
+struct test_string_pair {
+       const char* test;
+       const char* expected;
+};
+
+struct test_bad_string {
+       const char* test;
+       nserror res;
+};
+
+static const struct test_string_pair date_string_tests[] = {
+       {
+               .test     = "Thu, 01 Jan 1970 00:00:00 GMT",
+               .expected = "Thu, 01 Jan 1970 00:00:00 GMT"
+       },
+       {
+               .test     = "Thursday, 01 Jan 1970 00:00:00 GMT",
+               .expected = "Thu, 01 Jan 1970 00:00:00 GMT"
+       },
+       {
+               .test     = "Tue, 16 Feb 1999 19:45:12 GMT",
+               .expected = "Tue, 16 Feb 1999 19:45:12 GMT"
+       },
+       {
+               .test     = "Sunday, 16 Mar 1980 19:45:12 GMT",
+               .expected = "Sun, 16 Mar 1980 19:45:12 GMT"
+       },
+       {
+               .test     = "Sun, 16 Mar 1980 19:45:12 GMT",
+               .expected = "Sun, 16 Mar 1980 19:45:12 GMT"
+       },
+       {
+               .test     = "Tue, 16 Apr 2013 19:45:12 GMT",
+               .expected = "Tue, 16 Apr 2013 19:45:12 GMT"
+       },
+       {
+               .test     = "Tue, 16 May 2000 19:45:12 GMT",
+               .expected = "Tue, 16 May 2000 19:45:12 GMT"
+       },
+       {
+               .test     = "Tuesday, 12 Jun 2001 12:12:12 GMT",
+               .expected = "Tue, 12 Jun 2001 12:12:12 GMT"
+       },
+       {
+               .test     = "Tue, 12 Jun 2001 12:12:12 GMT",
+               .expected = "Tue, 12 Jun 2001 12:12:12 GMT"
+       },
+       {
+               .test     = "Thu, 16 Jul 2207 12:45:12 GMT",
+               .expected = "Thu, 16 Jul 2207 12:45:12 GMT"
+       },
+       {
+               .test     = "Thu, 16 Aug 2007 19:45:12 GMT",
+               .expected = "Thu, 16 Aug 2007 19:45:12 GMT"
+       },
+       {
+               .test     = "Tue, 16 Sep 3456 00:45:12 GMT",
+               .expected = "Tue, 16 Sep 3456 00:45:12 GMT"
+       },
+       {
+               .test     = "Sun, 16 Oct 1988 19:45:59 GMT",
+               .expected = "Sun, 16 Oct 1988 19:45:59 GMT"
+       },
+       {
+               .test     = "Tue, 16 Nov 1971 19:59:12 GMT",
+               .expected = "Tue, 16 Nov 1971 19:59:12 GMT"
+       },
+       {
+               .test     = "Friday, 16 Dec 1977 23:45:12 GMT",
+               .expected = "Fri, 16 Dec 1977 23:45:12 GMT"
+       },
+       {
+               .test     = "Fri, 16 Dec 1977 23:45:12 GMT",
+               .expected = "Fri, 16 Dec 1977 23:45:12 GMT"
+       },
+       {
+               .test     = "     16 Dec 1977 23:45:12 GMT",
+               .expected = "Fri, 16 Dec 1977 23:45:12 GMT"
+       },
+       {
+               .test     = "     16 Dec 1977 23:45    GMT",
+               .expected = "Fri, 16 Dec 1977 23:45:00 GMT"
+       },
+       {
+               .test     = "23:59 16 Dec 1977         GMT",
+               .expected = "Fri, 16 Dec 1977 23:59:00 GMT"
+       },
+       {
+               .test     = "23:59 16 Dec 1977         UTC",
+               .expected = "Fri, 16 Dec 1977 23:59:00 GMT"
+       },
+       {
+               .test     = "1977 GMT 23:59 16 Dec",
+               .expected = "Fri, 16 Dec 1977 23:59:00 GMT"
+       },
+       {
+               .test     = "1977 Dec GMT 16",
+               .expected = "Fri, 16 Dec 1977 00:00:00 GMT"
+       },
+       {
+               .test     = "1977 Dec 12",
+               .expected = "Mon, 12 Dec 1977 00:00:00 GMT"
+       },
+       {
+               .test     = "1977 12 Dec",
+               .expected = "Mon, 12 Dec 1977 00:00:00 GMT"
+       },
+       {
+               .test     = "Dec 1977 12",
+               .expected = "Mon, 12 Dec 1977 00:00:00 GMT"
+       },
+       {
+               .test     = "12 Dec 1977",
+               .expected = "Mon, 12 Dec 1977 00:00:00 GMT"
+       },
+       {
+               .test     = "12 Dec 77",
+               .expected = "Mon, 12 Dec 1977 00:00:00 GMT"
+       },
+       {
+               .test     = "12 77 Dec",
+               .expected = "Mon, 12 Dec 1977 00:00:00 GMT"
+       },
+       {
+               .test     = "77 12 Dec",
+               .expected = "Mon, 12 Dec 1977 00:00:00 GMT"
+       },
+       {
+               .test     = "12 12 Dec",
+               .expected = "Wed, 12 Dec 2012 00:00:00 GMT"
+       },
+       {
+               .test     = "5 12 Dec",
+               .expected = "Wed, 05 Dec 2012 00:00:00 GMT"
+       },
+       {
+               .test     = "12 5 Dec",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "12/5/Dec",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "Dec-12/2005/",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "12-5-Dec",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "2005-12-Dec",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "2005-Dec-12",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "2005-dec-12",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "2005-dEC-12",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "20051212",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "20051212 GMT",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "20051212 +0000",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "20051212 UTC",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "20051212 00:00 UTC",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "00:00 20051212 UTC",
+               .expected = "Mon, 12 Dec 2005 00:00:00 GMT"
+       },
+       {
+               .test     = "00:00:59 20051212 UTC",
+               .expected = "Mon, 12 Dec 2005 00:00:59 GMT"
+       },
+       {
+               .test     = "00:00:60 20051212 UTC", /* leap second */
+               .expected = "Mon, 12 Dec 2005 00:01:00 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 GMT",
+               .expected = "Thu, 11 Aug 2016 08:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 UTC",
+               .expected = "Thu, 11 Aug 2016 08:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 +0000",
+               .expected = "Thu, 11 Aug 2016 08:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 -0000",
+               .expected = "Thu, 11 Aug 2016 08:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 +0001",
+               .expected = "Thu, 11 Aug 2016 08:46:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 -0001",
+               .expected = "Thu, 11 Aug 2016 08:48:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 +0030",
+               .expected = "Thu, 11 Aug 2016 08:17:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 -0030",
+               .expected = "Thu, 11 Aug 2016 09:17:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 +0059",
+               .expected = "Thu, 11 Aug 2016 07:48:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 -0059",
+               .expected = "Thu, 11 Aug 2016 09:46:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 +0100",
+               .expected = "Thu, 11 Aug 2016 07:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 -0100",
+               .expected = "Thu, 11 Aug 2016 09:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 +1200",
+               .expected = "Wed, 10 Aug 2016 20:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 -1200",
+               .expected = "Thu, 11 Aug 2016 20:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 +0060",
+               .expected = "Thu, 11 Aug 2016 07:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 -0060",
+               .expected = "Thu, 11 Aug 2016 09:47:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 +0070",
+               .expected = "Thu, 11 Aug 2016 07:37:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 -0070",
+               .expected = "Thu, 11 Aug 2016 09:57:30 GMT"
+       },
+       {
+               .test     = "Thu, 11 Aug 2016 08:47:30 BST",
+               .expected = "Thu, 11 Aug 2016 07:47:30 GMT"
+       },
+       {
+               .test     = "14-Aug-2015 11:58:16 GMT",
+               .expected = "Fri, 14 Aug 2015 11:58:16 GMT"
+       },
+};
+
+
+static const struct test_bad_string date_bad_string_tests[] = {
+       {
+               .test = NULL,
+               .res  = NSERROR_BAD_PARAMETER
+       },
+       {
+               .test = "",
+               .res  = NSERROR_INVALID
+       },
+       {
+               .test = "Th",
+               .res  = NSERROR_INVALID
+       },
+       {
+               .test = "5",
+               .res  = NSERROR_INVALID
+       },
+       {
+               .test = "5",
+               .res  = NSERROR_INVALID
+       },
+       {
+               .test = "dsflihs9l84toswuhfsif74f",
+               .res  = NSERROR_INVALID
+       },
+       {
+               .test = "Foosday, 16 Dec 1977 23:45:12 GMT",
+               .res  = NSERROR_INVALID
+       },
+};
+
+/**
+ * Date string comparason test
+ */
+START_TEST(date_string_compare)
+{
+       nserror res;
+       time_t time_out;
+       const struct test_string_pair *t = &date_string_tests[_i];
+
+       res = nsc_strntimet(t->test, strlen(t->test), &time_out);
+       ck_assert(res == NSERROR_OK);
+       ck_assert_str_eq(rfc1123_date(time_out), t->expected);
+}
+END_TEST
+
+/**
+ * Date string conversion bad data test
+ */
+START_TEST(date_bad_string)
+{
+       nserror res;
+       time_t time_out;
+       const struct test_bad_string *t = &date_bad_string_tests[_i];
+
+       res = nsc_strntimet(t->test,
+                       t->test != NULL ? strlen(t->test) : 0,
+                       &time_out);
+       ck_assert(res != NSERROR_OK);
+       ck_assert(res == t->res);
+}
+END_TEST
+
+
+/* suite generation */
+static Suite *time_suite(void)
+{
+       Suite *s;
+       TCase *tc_date_string_compare;
+       TCase *tc_date_bad_string;
+
+       s = suite_create("time");
+
+       /* date parsing: string comparason */
+       tc_date_string_compare = tcase_create(
+                       "date string to time_t");
+
+       /* date parsing: bad string handling */
+       tc_date_bad_string = tcase_create(
+                       "date string to time_t (bad input)");
+
+       tcase_add_loop_test(tc_date_string_compare,
+                           date_string_compare,
+                           0, NELEMS(date_string_tests));
+       suite_add_tcase(s, tc_date_string_compare);
+
+       tcase_add_loop_test(tc_date_bad_string,
+                           date_bad_string,
+                           0, NELEMS(date_bad_string_tests));
+       suite_add_tcase(s, tc_date_bad_string);
+
+       return s;
+}
+
+int main(int argc, char **argv)
+{
+       int number_failed;
+       Suite *s;
+       SRunner *sr;
+
+       s = time_suite();
+
+       sr = srunner_create(s);
+       srunner_run_all(sr, CK_ENV);
+
+       number_failed = srunner_ntests_failed(sr);
+       srunner_free(sr);
+
+       return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
+}
diff --git a/utils/ascii.h b/utils/ascii.h
new file mode 100644
index 0000000..f08e756
--- /dev/null
+++ b/utils/ascii.h
@@ -0,0 +1,358 @@
+/*
+ * Copyright 2016 Michael Drake <[email protected]>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * \file utils/ascii.h
+ * \brief Helpers for ASCII string handling.
+ *
+ * These helpers for string parsing will have the correct effect for parsing
+ * ASCII text (as used by most web specs), regardless of system locale.
+ */
+
+#ifndef _NETSURF_UTILS_ASCII_H_
+#define _NETSURF_UTILS_ASCII_H_
+
+#include <errno.h>
+#include <stdlib.h>
+#include <limits.h>
+
+/**
+ * Test whether a character is a whitespace character.
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is whitespace, else false.
+ */
+static inline bool ascii_is_space(char c)
+{
+       return (c == ' '  || c == '\t' ||
+               c == '\n' || c == '\v' ||
+               c == '\f' || c == '\r');
+}
+
+/**
+ * Test whether a character is lower-case alphabetical.
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is lower-case alphabetical, else false.
+ */
+static inline bool ascii_is_alpha_lower(char c)
+{
+       return (c >= 'a' && c <= 'z');
+}
+
+/**
+ * Test whether a character is upper-case alphabetical.
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is upper-case alphabetical, else false.
+ */
+static inline bool ascii_is_alpha_upper(char c)
+{
+       return (c >= 'A' && c <= 'Z');
+}
+
+/**
+ * Test whether a character is alphabetical (upper or lower case).
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is alphabetical, else false.
+ */
+static inline bool ascii_is_alpha(char c)
+{
+       return (ascii_is_alpha_lower(c) || ascii_is_alpha_upper(c));
+}
+
+/**
+ * Test whether a character is a decimal digit.
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is a decimal digit, else false.
+ */
+static inline bool ascii_is_digit(char c)
+{
+       return (c >= '0' && c <= '9');
+}
+
+/**
+ * Test whether a character is a positive/negative numerical sign.
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is a sign, else false.
+ */
+static inline bool ascii_is_sign(char c)
+{
+       return (c == '-' || c == '+');
+}
+
+/**
+ * Test whether a character is alphanumerical (upper or lower case).
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is alphanumerical, else false.
+ */
+static inline bool ascii_is_alphanumerical(char c)
+{
+       return (ascii_is_alpha(c) || ascii_is_digit(c));
+}
+
+/**
+ * Test whether a character is hexadecimal (lower case).
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is hexadecimal, else false.
+ */
+static inline bool ascii_is_hex_lower(char c)
+{
+       return (ascii_is_digit(c) ||
+                       (c >= 'a' && c <= 'f'));
+}
+
+/**
+ * Test whether a character is hexadecimal (upper case).
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is hexadecimal, else false.
+ */
+static inline bool ascii_is_hex_upper(char c)
+{
+       return (ascii_is_digit(c) ||
+                       (c >= 'A' && c <= 'F'));
+}
+
+/**
+ * Test whether a character is hexadecimal (upper or lower case).
+ *
+ * \param[in] c  Character to test.
+ * \return true iff `c` is hexadecimal, else false.
+ */
+static inline bool ascii_is_hex(char c)
+{
+       return (ascii_is_digit(c) ||
+                       (c >= 'A' && c <= 'F') ||
+                       (c >= 'a' && c <= 'f'));
+}
+
+/**
+ * Convert an upper case character to lower case.
+ *
+ * If the given character is not upper case alphabetical, it is returned
+ * unchanged.
+ *
+ * \param[in] c  Character to convert.
+ * \return lower case conversion of `c` else `c`.
+ */
+static inline char ascii_to_lower(char c)
+{
+       return (ascii_is_alpha_upper(c)) ? (c + 'a' - 'A') : c;
+}
+
+/**
+ * Convert a lower case character to upper case.
+ *
+ * If the given character is not lower case alphabetical, it is returned
+ * unchanged.
+ *
+ * \param[in] c  Character to convert.
+ * \return upper case conversion of `c` else `c`.
+ */
+static inline char ascii_to_upper(char c)
+{
+       return (ascii_is_alpha_lower(c)) ? (c + 'A' - 'a') : c;
+}
+
+/**
+ * Count consecutive lower case alphabetical characters in string.
+ *
+ * \param[in] str  String to count characters in.
+ * \return number of consecutive lower case characters at start of `str`.
+ */
+static inline size_t ascii_count_alpha_lower(const char *str)
+{
+       size_t count = 0;
+       while (ascii_is_alpha_lower(*(str++))) {
+               count++;
+       }
+       return count;
+}
+
+/**
+ * Count consecutive upper case alphabetical characters in string.
+ *
+ * \param[in] str  String to count characters in.
+ * \return number of consecutive upper case characters at start of `str`.
+ */
+static inline size_t ascii_count_alpha_upper(const char *str)
+{
+       size_t count = 0;
+       while (ascii_is_alpha_upper(*(str++))) {
+               count++;
+       }
+       return count;
+}
+
+/**
+ * Count consecutive alphabetical characters in string (upper or lower case).
+ *
+ * \param[in] str  String to count characters in.
+ * \return number of consecutive alphabetical characters at start of `str`.
+ */
+static inline size_t ascii_count_alpha(const char *str)
+{
+       size_t count = 0;
+       while (ascii_is_alpha(*(str++))) {
+               count++;
+       }
+       return count;
+}
+
+/**
+ * Count consecutive decial digit characters in string.
+ *
+ * \param[in] str  String to count characters in.
+ * \return number of consecutive decimal digit characters at start of `str`.
+ */
+static inline size_t ascii_count_digit(const char *str)
+{
+       size_t count = 0;
+       while (ascii_is_digit(*(str++))) {
+               count++;
+       }
+       return count;
+}
+
+/**
+ * Count consecutive characters either decimal digit or colon in string.
+ *
+ * \param[in] str  String to count characters in.
+ * \return number of consecutive decimal or ':' characters at start of `str`.
+ */
+static inline size_t ascii_count_digit_or_colon(const char *str)
+{
+       size_t count = 0;
+       while (ascii_is_digit(*str) || *str == ':') {
+               count++;
+               str++;
+       }
+       return count;
+}
+
+/**
+ * Test for string equality (case insensitive).
+ *
+ * \param[in] s1  First string to compare.
+ * \param[in] s2  Second string to compare.
+ * \return true iff strings are equivalent, else false.
+ */
+static inline bool ascii_strings_equal_caseless(
+               const char *s1, const char *s2)
+{
+       while (*s1 != '\0') {
+               if (ascii_to_lower(*s1) != ascii_to_lower(*s2)) {
+                       break;
+               }
+               s1++;
+               s2++;
+       }
+       return (ascii_to_lower(*s1) == ascii_to_lower(*s2));
+}
+
+/**
+ * Test for string equality (case sensitive).
+ *
+ * \param[in] s1  First string to compare.
+ * \param[in] s2  Second string to compare.
+ * \return true iff strings are equal, else false.
+ */
+static inline bool ascii_strings_equal(
+               const char *s1, const char *s2)
+{
+       while (*s1 != '\0') {
+               if (*s1 != *s2) {
+                       break;
+               }
+               s1++;
+               s2++;
+       }
+       return (*s1 == *s2);
+}
+
+/**
+ * Count consecutive equal ascii characters (case insensitive).
+ *
+ * \param[in] s1  First string to compare.
+ * \param[in] s2  Second string to compare.
+ * \return number of equivalent characters.
+ */
+static inline size_t ascii_strings_count_equal_caseless(
+               const char *s1, const char *s2)
+{
+       const char *s = s1;
+       while (*s1 != '\0') {
+               if (ascii_to_lower(*s1) != ascii_to_lower(*s2)) {
+                       break;
+               }
+               s1++;
+               s2++;
+       }
+       return s1 - s;
+}
+
+/**
+ * Count consecutive equal ascii characters (case sensitive).
+ *
+ * \param[in] s1  First string to compare.
+ * \param[in] s2  Second string to compare.
+ * \return number of equal characters.
+ */
+static inline size_t ascii_strings_count_equal(
+               const char *s1, const char *s2)
+{
+       const char *s = s1;
+       while (*s1 != '\0') {
+               if (*s1 != *s2) {
+                       break;
+               }
+               s1++;
+               s2++;
+       }
+       return s1 - s;
+}
+
+/**
+ * Parse an int out of a string.
+ *
+ * \param[in]  str  String to parse integer out of.
+ * \param[out] res  Returns parsed integer.
+ * \return The number of characters consumed in `str`.
+ *         Returning 0 indicates failure to parse an integer out of the string.
+ */
+static inline size_t ascii_string_to_int(const char *str, int *res)
+{
+       char *end = NULL;
+       long long temp = strtoll(str, &end, 10);
+
+       if (end == str || errno == ERANGE ||
+                       temp < INT_MIN || temp > INT_MAX) {
+               return 0;
+       }
+
+       *res = temp;
+       return end - str;
+}
+
+#endif
diff --git a/utils/nsurl.c b/utils/nsurl.c
index 6582264..c5c614c 100644
--- a/utils/nsurl.c
+++ b/utils/nsurl.c
@@ -32,12 +32,12 @@
  */
 
 #include <assert.h>
-#include <ctype.h>
 #include <libwapcaplet/libwapcaplet.h>
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>
 
+#include "utils/ascii.h"
 #include "utils/corestrings.h"
 #include "utils/errors.h"
 #include "utils/idna.h"
@@ -48,28 +48,6 @@
 /* Define to enable NSURL debugging */
 #undef NSURL_DEBUG
 
-/** ascii character codes */
-enum ascii_codepoints {
-       ASCII_NUL = 0,
-       ASCII_SPC = 0x20,
-       ASCII_FF = 0x0C,
-       ASCII_NL = 0x0A,
-       ASCII_CR = 0x0D,
-       ASCII_HT = 0x09,
-       ASCII_VT = 0x0B,
-       ASCII_PLUS = 0x2b,
-       ASCII_MINUS = 0x2d,
-       ASCII_FULLSTOP = 0x2e,
-       ASCII_SLASH = 0x2F,
-       ASCII_0 = 0x30,
-       ASCII_9 = 0x39,
-       ASCII_COLON = 0x3A,
-       ASCII_A = 0x41,
-       ASCII_Z = 0x5A,
-       ASCII_a = 0x61,
-       ASCII_z = 0x7A
-};
-
 /**
  * nsurl scheme type
  */
@@ -208,79 +186,6 @@ inline static char digit2uppercase_hex(unsigned char 
digit) {
 }
 
 /**
- * determines if a character is a whitespace in the ascii character encoding
- *
- * whitespace characters are space, form feed, new line, carrige
- * return, horizontal tab and vertical tab.
- *
- * \param c character to classify
- * \return zero if the character is not whitespace else 1
- */
-inline static int is_ascii_space(int c)
-{
-       if (c == ASCII_SPC ||
-           c == ASCII_FF ||
-           c == ASCII_NL ||
-           c == ASCII_CR ||
-           c == ASCII_HT ||
-           c == ASCII_VT) {
-               return 1;
-       }
-       return 0;
-}
-
-/**
- * determine if a character is alphabetical in the ascii character encoding
- *
- * characters in the range A-Z and a-z are considered alphabetical.
- *
- * \param c character to classify
- * \return zero if the character is not alphabetical else 1
- */
-inline static int is_ascii_alpha(int c)
-{
-       if (((c >= ASCII_A) && (c <= ASCII_Z)) ||
-           ((c >= ASCII_a) && (c <= ASCII_z))) {
-               return 1;
-       }
-       return 0;
-}
-
-/**
- * determine if a character is a number in the ascii character encoding
- *
- * characters in the range 0-9 are considered numbers.
- *
- * \param c character to classify
- * \return 1 if the character is a number else 0
- */
-inline static int is_ascii_digit(int c)
-{
-       if ((c >= ASCII_0) && (c <= ASCII_9)) {
-               return 1;
-       }
-       return 0;
-}
-
-/**
- * determine if a character is alphanumerical in the ascii character encoding
- *
- * characters in the range A-Z, a-z and 0-9 are considered alphanumeric.
- *
- * \param c character to classify
- * \return zero if the character is not alphanumerical else 1
- */
-inline static int is_ascii_alnum(int c)
-{
-       if (((c >= ASCII_0) && (c <= ASCII_9)) ||
-           ((c >= ASCII_A) && (c <= ASCII_Z)) ||
-           ((c >= ASCII_a) && (c <= ASCII_z))) {
-               return 1;
-       }
-       return 0;
-}
-
-/**
  * determine if a character is unreserved
  *
  * \param c character to classify.
@@ -397,7 +302,7 @@ static void nsurl__get_string_markers(const char * const 
url_s,
                                      0, 0, 0,   0, NSURL_SCHEME_OTHER };
 
        /* Skip any leading whitespace in url_s */
-       while (is_ascii_space(*pos))
+       while (ascii_is_space(*pos))
                pos++;
 
        /* Record start point */
@@ -406,7 +311,7 @@ static void nsurl__get_string_markers(const char * const 
url_s,
        marker.scheme_end = marker.authority = marker.colon_first = marker.at =
                        marker.colon_last = marker.path = marker.start;
 
-       if (*pos == ASCII_NUL) {
+       if (*pos == '\0') {
                /* Nothing but whitespace, early exit */
                marker.query = marker.fragment = marker.end = marker.path;
                *markers = marker;
@@ -414,14 +319,12 @@ static void nsurl__get_string_markers(const char * const 
url_s,
        }
 
        /* Get scheme */
-       if (is_ascii_alpha(*pos)) {
+       if (ascii_is_alpha(*pos)) {
                pos++;
 
-               while (*pos != ASCII_COLON && *pos != ASCII_NUL) {
-                       if (!is_ascii_alnum(*pos) &&
-                           (*pos != ASCII_PLUS) &&
-                           (*pos != ASCII_MINUS) &&
-                           (*pos != ASCII_FULLSTOP)) {
+               while (*pos != ':' && *pos != '\0') {
+                       if (!ascii_is_alphanumerical(*pos) && (*pos != '+') &&
+                                       (*pos != '-') && (*pos != '.')) {
                                /* This character is not valid in the
                                 * scheme */
                                break;
@@ -429,7 +332,7 @@ static void nsurl__get_string_markers(const char * const 
url_s,
                        pos++;
                }
 
-               if (*pos == ASCII_COLON) {
+               if (*pos == ':') {
                        /* This delimits the end of the scheme */
                        size_t off;
 
@@ -607,9 +510,9 @@ static void nsurl__get_string_markers(const char * const 
url_s,
        /* We got to the end of url_s.
         * Need to skip back over trailing whitespace to find end of URL */
        pos--;
-       if (pos >= url_s && is_ascii_space(*pos)) {
+       if (pos >= url_s && ascii_is_space(*pos)) {
                trailing_whitespace = true;
-               while (pos >= url_s && is_ascii_space(*pos))
+               while (pos >= url_s && ascii_is_space(*pos))
                        pos--;
        }
 
@@ -790,7 +693,7 @@ static inline int nsurl__get_ascii_offset(char c1, char c2)
        int offset;
 
        /* Use 1st char as most significant hex digit */
-       if (is_ascii_digit(c1))
+       if (ascii_is_digit(c1))
                offset = 16 * (c1 - '0');
        else if (c1 >= 'a' && c1 <= 'f')
                offset = 16 * (c1 - 'a' + 10);
@@ -801,7 +704,7 @@ static inline int nsurl__get_ascii_offset(char c1, char c2)
                return -1;
 
        /* Use 2nd char as least significant hex digit and sum */
-       if (is_ascii_digit(c2))
+       if (ascii_is_digit(c2))
                offset += c2 - '0';
        else if (c2 >= 'a' && c2 <= 'f')
                offset += c2 - 'a' + 10;
@@ -953,7 +856,7 @@ static nserror nsurl__create_from_section(const char * 
const url_s,
                        length += 2;
 
                } else if ((section == URL_SCHEME || section == URL_HOST) &&
-                               isupper(*pos)) {
+                               ascii_is_alpha_upper(*pos)) {
                        /* Lower case this letter */
 
                        if (copy_len > 0) {
@@ -963,7 +866,7 @@ static nserror nsurl__create_from_section(const char * 
const url_s,
                                copy_len = 0;
                        }
                        /* Copy lower cased letter into normalised URL */
-                       *(pos_norm++) = tolower(*pos);
+                       *(pos_norm++) = ascii_to_lower(*pos);
                        pos_url_s = pos + 1;
 
                } else {
@@ -1058,7 +961,7 @@ static nserror nsurl__create_from_section(const char * 
const url_s,
                                 */
                                sec_start += colon - pegs->at;
                                while (++sec_start < norm_start + length) {
-                                       if (!is_ascii_digit(*sec_start)) {
+                                       if (!ascii_is_digit(*sec_start)) {
                                                /* Character after port isn't a
                                                 * digit; not a port separator
                                                 */
diff --git a/utils/time.c b/utils/time.c
index cf8acc0..14f4004 100644
--- a/utils/time.c
+++ b/utils/time.c
@@ -25,30 +25,98 @@
  * \brief Implementation of time operations.
  */
 
-#include <errno.h>
 #include <stdio.h>
-#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
 
+#ifdef WITH_CURL
 #include <curl/curl.h>
+#endif
 
+#include "utils/ascii.h"
 #include "utils/errors.h"
 #include "utils/time.h"
 
 
+/**
+ * Weekdays
+ *
+ * Must be calender order.
+ */
+enum nsc_time_weekdays {
+       NSC_TIME_WEEKDAY_SUN,
+       NSC_TIME_WEEKDAY_MON,
+       NSC_TIME_WEEKDAY_TUE,
+       NSC_TIME_WEEKDAY_WED,
+       NSC_TIME_WEEKDAY_THU,
+       NSC_TIME_WEEKDAY_FRI,
+       NSC_TIME_WEEKDAY_SAT,
+       NSC_TIME_WEEKDAY__COUNT
+};
+/**
+ * Months
+ *
+ * Must be calender order.
+ */
+enum nsc_time_months {
+       NSC_TIME_MONTH_JAN,
+       NSC_TIME_MONTH_FEB,
+       NSC_TIME_MONTH_MAR,
+       NSC_TIME_MONTH_APR,
+       NSC_TIME_MONTH_MAY,
+       NSC_TIME_MONTH_JUN,
+       NSC_TIME_MONTH_JUL,
+       NSC_TIME_MONTH_AUG,
+       NSC_TIME_MONTH_SEP,
+       NSC_TIME_MONTH_OCT,
+       NSC_TIME_MONTH_NOV,
+       NSC_TIME_MONTH_DEC,
+       NSC_TIME_MONTH__COUNT,
+};
+
+
+/**
+ * Array of short weekday names.
+ */
+static const char * const weekdays_short[NSC_TIME_WEEKDAY__COUNT] = {
+       [NSC_TIME_WEEKDAY_SUN] = "Sun",
+       [NSC_TIME_WEEKDAY_MON] = "Mon",
+       [NSC_TIME_WEEKDAY_TUE] = "Tue",
+       [NSC_TIME_WEEKDAY_WED] = "Wed",
+       [NSC_TIME_WEEKDAY_THU] = "Thu",
+       [NSC_TIME_WEEKDAY_FRI] = "Fri",
+       [NSC_TIME_WEEKDAY_SAT] = "Sat"
+};
+/**
+ * Array of month names.
+ */
+static const char * const months[NSC_TIME_MONTH__COUNT] = {
+       [NSC_TIME_MONTH_JAN] = "Jan",
+       [NSC_TIME_MONTH_FEB] = "Feb",
+       [NSC_TIME_MONTH_MAR] = "Mar",
+       [NSC_TIME_MONTH_APR] = "Apr",
+       [NSC_TIME_MONTH_MAY] = "May",
+       [NSC_TIME_MONTH_JUN] = "Jun",
+       [NSC_TIME_MONTH_JUL] = "Jul",
+       [NSC_TIME_MONTH_AUG] = "Aug",
+       [NSC_TIME_MONTH_SEP] = "Sep",
+       [NSC_TIME_MONTH_OCT] = "Oct",
+       [NSC_TIME_MONTH_NOV] = "Nov",
+       [NSC_TIME_MONTH_DEC] = "Dec"
+};
+
+
 /* exported interface documented in utils/time.h */
 const char *rfc1123_date(time_t t)
 {
        static char ret[30];
 
        struct tm *tm = gmtime(&t);
-       const char *days[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" 
},
-               *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
-                               "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
 
        snprintf(ret, sizeof ret, "%s, %02d %s %d %02d:%02d:%02d GMT",
-                       days[tm->tm_wday], tm->tm_mday, months[tm->tm_mon],
-                       tm->tm_year + 1900, tm->tm_hour, tm->tm_min,
-                       tm->tm_sec);
+                       weekdays_short[tm->tm_wday], tm->tm_mday,
+                       months[tm->tm_mon], tm->tm_year + 1900,
+                       tm->tm_hour, tm->tm_min, tm->tm_sec);
 
        return ret;
 }
@@ -115,11 +183,814 @@ nserror nsc_snptimet(const char *str, size_t size, 
time_t *timep)
 }
 
 
+#ifndef WITH_CURL
+
+
+/**
+ * Array of long weekday names.
+ */
+static const char * const weekdays_long[NSC_TIME_WEEKDAY__COUNT] = {
+       [NSC_TIME_WEEKDAY_SUN] = "Sunday",
+       [NSC_TIME_WEEKDAY_MON] = "Monday",
+       [NSC_TIME_WEEKDAY_TUE] = "Tuesday",
+       [NSC_TIME_WEEKDAY_WED] = "Wednesday",
+       [NSC_TIME_WEEKDAY_THU] = "Thursday",
+       [NSC_TIME_WEEKDAY_FRI] = "Friday",
+       [NSC_TIME_WEEKDAY_SAT] = "Saturday"
+};
+
+/**
+ * Timezone offsets in mins
+ *
+ * Order doesn't matter.
+ */
+enum nsc_time_zone_offsets {
+       /* Timezones */
+       NSC_TIME_ZONE_OFFSET_IDLE = -12 * 60,
+       NSC_TIME_ZONE_OFFSET_NZST = -12 * 60,
+       NSC_TIME_ZONE_OFFSET_NZT  = -12 * 60,
+       NSC_TIME_ZONE_OFFSET_EAST = -10 * 60,
+       NSC_TIME_ZONE_OFFSET_GST  = -10 * 60,
+       NSC_TIME_ZONE_OFFSET_JST  = - 9 * 60,
+       NSC_TIME_ZONE_OFFSET_CCT  = - 8 * 60,
+       NSC_TIME_ZONE_OFFSET_WAST = - 7 * 60,
+       NSC_TIME_ZONE_OFFSET_EET  = - 2 * 60,
+       NSC_TIME_ZONE_OFFSET_CET  = - 1 * 60,
+       NSC_TIME_ZONE_OFFSET_FWT  = - 1 * 60,
+       NSC_TIME_ZONE_OFFSET_MET  = - 1 * 60,
+       NSC_TIME_ZONE_OFFSET_MEWT = - 1 * 60,
+       NSC_TIME_ZONE_OFFSET_GMT  =   0,
+       NSC_TIME_ZONE_OFFSET_UTC  =   0,
+       NSC_TIME_ZONE_OFFSET_WET  =   0,
+       NSC_TIME_ZONE_OFFSET_WAT  =   1 * 60,
+       NSC_TIME_ZONE_OFFSET_AST  =   4 * 60,
+       NSC_TIME_ZONE_OFFSET_EST  =   5 * 60,
+       NSC_TIME_ZONE_OFFSET_CST  =   6 * 60,
+       NSC_TIME_ZONE_OFFSET_MST  =   7 * 60,
+       NSC_TIME_ZONE_OFFSET_PST  =   8 * 60,
+       NSC_TIME_ZONE_OFFSET_YST  =   9 * 60,
+       NSC_TIME_ZONE_OFFSET_AHST =  10 * 60,
+       NSC_TIME_ZONE_OFFSET_CAT  =  10 * 60,
+       NSC_TIME_ZONE_OFFSET_HST  =  10 * 60,
+       NSC_TIME_ZONE_OFFSET_IDLW =  12 * 60,
+
+       /* Daylight saving modified timezones */
+       NSC_TIME_ZONE_OFFSET_NZDT = NSC_TIME_ZONE_OFFSET_NZT  - 60,
+       NSC_TIME_ZONE_OFFSET_EADT = NSC_TIME_ZONE_OFFSET_EAST - 60,
+       NSC_TIME_ZONE_OFFSET_WADT = NSC_TIME_ZONE_OFFSET_WAST - 60,
+       NSC_TIME_ZONE_OFFSET_CEST = NSC_TIME_ZONE_OFFSET_CET  - 60,
+       NSC_TIME_ZONE_OFFSET_FST  = NSC_TIME_ZONE_OFFSET_FWT  - 60,
+       NSC_TIME_ZONE_OFFSET_MEST = NSC_TIME_ZONE_OFFSET_MET  - 60,
+       NSC_TIME_ZONE_OFFSET_MESZ = NSC_TIME_ZONE_OFFSET_MET  - 60,
+       NSC_TIME_ZONE_OFFSET_BST  = NSC_TIME_ZONE_OFFSET_GMT  - 60,
+       NSC_TIME_ZONE_OFFSET_ADT  = NSC_TIME_ZONE_OFFSET_AST  - 60,
+       NSC_TIME_ZONE_OFFSET_EDT  = NSC_TIME_ZONE_OFFSET_EST  - 60,
+       NSC_TIME_ZONE_OFFSET_CDT  = NSC_TIME_ZONE_OFFSET_CST  - 60,
+       NSC_TIME_ZONE_OFFSET_MDT  = NSC_TIME_ZONE_OFFSET_MST  - 60,
+       NSC_TIME_ZONE_OFFSET_PDT  = NSC_TIME_ZONE_OFFSET_PST  - 60,
+       NSC_TIME_ZONE_OFFSET_YDT  = NSC_TIME_ZONE_OFFSET_YST  - 60,
+       NSC_TIME_ZONE_OFFSET_HDT  = NSC_TIME_ZONE_OFFSET_HST  - 60,
+
+       /* Military timezones */
+       NSC_TIME_ZONE_OFFSET_Y    = -12 * 60,
+       NSC_TIME_ZONE_OFFSET_X    = -11 * 60,
+       NSC_TIME_ZONE_OFFSET_W    = -10 * 60,
+       NSC_TIME_ZONE_OFFSET_V    = - 9 * 60,
+       NSC_TIME_ZONE_OFFSET_U    = - 8 * 60,
+       NSC_TIME_ZONE_OFFSET_T    = - 7 * 60,
+       NSC_TIME_ZONE_OFFSET_S    = - 6 * 60,
+       NSC_TIME_ZONE_OFFSET_R    = - 5 * 60,
+       NSC_TIME_ZONE_OFFSET_Q    = - 4 * 60,
+       NSC_TIME_ZONE_OFFSET_P    = - 3 * 60,
+       NSC_TIME_ZONE_OFFSET_O    = - 2 * 60,
+       NSC_TIME_ZONE_OFFSET_N    = - 1 * 60,
+       NSC_TIME_ZONE_OFFSET_Z    =   0 * 60,
+       NSC_TIME_ZONE_OFFSET_A    =   1 * 60,
+       NSC_TIME_ZONE_OFFSET_B    =   2 * 60,
+       NSC_TIME_ZONE_OFFSET_C    =   3 * 60,
+       NSC_TIME_ZONE_OFFSET_D    =   4 * 60,
+       NSC_TIME_ZONE_OFFSET_E    =   5 * 60,
+       NSC_TIME_ZONE_OFFSET_F    =   6 * 60,
+       NSC_TIME_ZONE_OFFSET_G    =   7 * 60,
+       NSC_TIME_ZONE_OFFSET_H    =   8 * 60,
+       NSC_TIME_ZONE_OFFSET_I    =   9 * 60,
+       NSC_TIME_ZONE_OFFSET_K    =  10 * 60,
+       NSC_TIME_ZONE_OFFSET_L    =  11 * 60,
+       NSC_TIME_ZONE_OFFSET_M    =  12 * 60,
+};
+
+/**
+ * List of timezones.
+ *
+ * The order here is the order they appear in the `timezone_mins` array.
+ * So there is value in putting the most common timezones first.
+ */
+enum nsc_time_zones {
+       NSC_TIME_ZONE_IDLE,
+       NSC_TIME_ZONE_NZST,
+       NSC_TIME_ZONE_NZT,
+       NSC_TIME_ZONE_EAST,
+       NSC_TIME_ZONE_GST,
+       NSC_TIME_ZONE_JST,
+       NSC_TIME_ZONE_CCT,
+       NSC_TIME_ZONE_WAST,
+       NSC_TIME_ZONE_EET,
+       NSC_TIME_ZONE_CET,
+       NSC_TIME_ZONE_FWT,
+       NSC_TIME_ZONE_MET,
+       NSC_TIME_ZONE_MEWT,
+       NSC_TIME_ZONE_GMT,
+       NSC_TIME_ZONE_UTC,
+       NSC_TIME_ZONE_WET,
+       NSC_TIME_ZONE_WAT,
+       NSC_TIME_ZONE_AST,
+       NSC_TIME_ZONE_EST,
+       NSC_TIME_ZONE_CST,
+       NSC_TIME_ZONE_MST,
+       NSC_TIME_ZONE_PST,
+       NSC_TIME_ZONE_YST,
+       NSC_TIME_ZONE_AHST,
+       NSC_TIME_ZONE_CAT,
+       NSC_TIME_ZONE_HST,
+       NSC_TIME_ZONE_IDLW,
+       NSC_TIME_ZONE_NZDT,
+       NSC_TIME_ZONE_EADT,
+       NSC_TIME_ZONE_WADT,
+       NSC_TIME_ZONE_CEST,
+       NSC_TIME_ZONE_FST,
+       NSC_TIME_ZONE_MEST,
+       NSC_TIME_ZONE_MESZ,
+       NSC_TIME_ZONE_BST,
+       NSC_TIME_ZONE_ADT,
+       NSC_TIME_ZONE_EDT,
+       NSC_TIME_ZONE_CDT,
+       NSC_TIME_ZONE_MDT,
+       NSC_TIME_ZONE_PDT,
+       NSC_TIME_ZONE_YDT,
+       NSC_TIME_ZONE_HDT,
+       NSC_TIME_ZONE_Y,
+       NSC_TIME_ZONE_X,
+       NSC_TIME_ZONE_W,
+       NSC_TIME_ZONE_V,
+       NSC_TIME_ZONE_U,
+       NSC_TIME_ZONE_T,
+       NSC_TIME_ZONE_S,
+       NSC_TIME_ZONE_R,
+       NSC_TIME_ZONE_Q,
+       NSC_TIME_ZONE_P,
+       NSC_TIME_ZONE_O,
+       NSC_TIME_ZONE_N,
+       NSC_TIME_ZONE_Z,
+       NSC_TIME_ZONE_A,
+       NSC_TIME_ZONE_B,
+       NSC_TIME_ZONE_C,
+       NSC_TIME_ZONE_D,
+       NSC_TIME_ZONE_E,
+       NSC_TIME_ZONE_F,
+       NSC_TIME_ZONE_G,
+       NSC_TIME_ZONE_H,
+       NSC_TIME_ZONE_I,
+       NSC_TIME_ZONE_K,
+       NSC_TIME_ZONE_L,
+       NSC_TIME_ZONE_M,
+       NSC_TIME_ZONE__COUNT
+};
+
+/**
+ * Array of minute offsets for timezones.
+ */
+static const int16_t timezone_mins[NSC_TIME_ZONE__COUNT] = {
+       [NSC_TIME_ZONE_IDLE] = NSC_TIME_ZONE_OFFSET_IDLE,
+       [NSC_TIME_ZONE_NZST] = NSC_TIME_ZONE_OFFSET_NZST,
+       [NSC_TIME_ZONE_NZT]  = NSC_TIME_ZONE_OFFSET_NZT,
+       [NSC_TIME_ZONE_EAST] = NSC_TIME_ZONE_OFFSET_EAST,
+       [NSC_TIME_ZONE_GST]  = NSC_TIME_ZONE_OFFSET_GST,
+       [NSC_TIME_ZONE_JST]  = NSC_TIME_ZONE_OFFSET_JST,
+       [NSC_TIME_ZONE_CCT]  = NSC_TIME_ZONE_OFFSET_CCT,
+       [NSC_TIME_ZONE_WAST] = NSC_TIME_ZONE_OFFSET_WAST,
+       [NSC_TIME_ZONE_EET]  = NSC_TIME_ZONE_OFFSET_EET,
+       [NSC_TIME_ZONE_CET]  = NSC_TIME_ZONE_OFFSET_CET,
+       [NSC_TIME_ZONE_FWT]  = NSC_TIME_ZONE_OFFSET_FWT,
+       [NSC_TIME_ZONE_MET]  = NSC_TIME_ZONE_OFFSET_MET,
+       [NSC_TIME_ZONE_MEWT] = NSC_TIME_ZONE_OFFSET_MEWT,
+       [NSC_TIME_ZONE_GMT]  = NSC_TIME_ZONE_OFFSET_GMT,
+       [NSC_TIME_ZONE_UTC]  = NSC_TIME_ZONE_OFFSET_UTC,
+       [NSC_TIME_ZONE_WET]  = NSC_TIME_ZONE_OFFSET_WET,
+       [NSC_TIME_ZONE_WAT]  = NSC_TIME_ZONE_OFFSET_WAT,
+       [NSC_TIME_ZONE_AST]  = NSC_TIME_ZONE_OFFSET_AST,
+       [NSC_TIME_ZONE_EST]  = NSC_TIME_ZONE_OFFSET_EST,
+       [NSC_TIME_ZONE_CST]  = NSC_TIME_ZONE_OFFSET_CST,
+       [NSC_TIME_ZONE_MST]  = NSC_TIME_ZONE_OFFSET_MST,
+       [NSC_TIME_ZONE_PST]  = NSC_TIME_ZONE_OFFSET_PST,
+       [NSC_TIME_ZONE_YST]  = NSC_TIME_ZONE_OFFSET_YST,
+       [NSC_TIME_ZONE_AHST] = NSC_TIME_ZONE_OFFSET_AHST,
+       [NSC_TIME_ZONE_CAT]  = NSC_TIME_ZONE_OFFSET_CAT,
+       [NSC_TIME_ZONE_HST]  = NSC_TIME_ZONE_OFFSET_HST,
+       [NSC_TIME_ZONE_IDLW] = NSC_TIME_ZONE_OFFSET_IDLW,
+       [NSC_TIME_ZONE_NZDT] = NSC_TIME_ZONE_OFFSET_NZDT,
+       [NSC_TIME_ZONE_EADT] = NSC_TIME_ZONE_OFFSET_EADT,
+       [NSC_TIME_ZONE_WADT] = NSC_TIME_ZONE_OFFSET_WADT,
+       [NSC_TIME_ZONE_CEST] = NSC_TIME_ZONE_OFFSET_CEST,
+       [NSC_TIME_ZONE_FST]  = NSC_TIME_ZONE_OFFSET_FST,
+       [NSC_TIME_ZONE_MEST] = NSC_TIME_ZONE_OFFSET_MEST,
+       [NSC_TIME_ZONE_MESZ] = NSC_TIME_ZONE_OFFSET_MESZ,
+       [NSC_TIME_ZONE_BST]  = NSC_TIME_ZONE_OFFSET_BST,
+       [NSC_TIME_ZONE_ADT]  = NSC_TIME_ZONE_OFFSET_ADT,
+       [NSC_TIME_ZONE_EDT]  = NSC_TIME_ZONE_OFFSET_EDT,
+       [NSC_TIME_ZONE_CDT]  = NSC_TIME_ZONE_OFFSET_CDT,
+       [NSC_TIME_ZONE_MDT]  = NSC_TIME_ZONE_OFFSET_MDT,
+       [NSC_TIME_ZONE_PDT]  = NSC_TIME_ZONE_OFFSET_PDT,
+       [NSC_TIME_ZONE_YDT]  = NSC_TIME_ZONE_OFFSET_YDT,
+       [NSC_TIME_ZONE_HDT]  = NSC_TIME_ZONE_OFFSET_HDT,
+       [NSC_TIME_ZONE_Y]    = NSC_TIME_ZONE_OFFSET_Y,
+       [NSC_TIME_ZONE_X]    = NSC_TIME_ZONE_OFFSET_X,
+       [NSC_TIME_ZONE_W]    = NSC_TIME_ZONE_OFFSET_W,
+       [NSC_TIME_ZONE_V]    = NSC_TIME_ZONE_OFFSET_V,
+       [NSC_TIME_ZONE_U]    = NSC_TIME_ZONE_OFFSET_U,
+       [NSC_TIME_ZONE_T]    = NSC_TIME_ZONE_OFFSET_T,
+       [NSC_TIME_ZONE_S]    = NSC_TIME_ZONE_OFFSET_S,
+       [NSC_TIME_ZONE_R]    = NSC_TIME_ZONE_OFFSET_R,
+       [NSC_TIME_ZONE_Q]    = NSC_TIME_ZONE_OFFSET_Q,
+       [NSC_TIME_ZONE_P]    = NSC_TIME_ZONE_OFFSET_P,
+       [NSC_TIME_ZONE_O]    = NSC_TIME_ZONE_OFFSET_O,
+       [NSC_TIME_ZONE_N]    = NSC_TIME_ZONE_OFFSET_N,
+       [NSC_TIME_ZONE_Z]    = NSC_TIME_ZONE_OFFSET_Z,
+       [NSC_TIME_ZONE_A]    = NSC_TIME_ZONE_OFFSET_A,
+       [NSC_TIME_ZONE_B]    = NSC_TIME_ZONE_OFFSET_B,
+       [NSC_TIME_ZONE_C]    = NSC_TIME_ZONE_OFFSET_C,
+       [NSC_TIME_ZONE_D]    = NSC_TIME_ZONE_OFFSET_D,
+       [NSC_TIME_ZONE_E]    = NSC_TIME_ZONE_OFFSET_E,
+       [NSC_TIME_ZONE_F]    = NSC_TIME_ZONE_OFFSET_F,
+       [NSC_TIME_ZONE_G]    = NSC_TIME_ZONE_OFFSET_G,
+       [NSC_TIME_ZONE_H]    = NSC_TIME_ZONE_OFFSET_H,
+       [NSC_TIME_ZONE_I]    = NSC_TIME_ZONE_OFFSET_I,
+       [NSC_TIME_ZONE_K]    = NSC_TIME_ZONE_OFFSET_K,
+       [NSC_TIME_ZONE_L]    = NSC_TIME_ZONE_OFFSET_L,
+       [NSC_TIME_ZONE_M]    = NSC_TIME_ZONE_OFFSET_M
+};
+
+/**
+ * Array of timezone names.  Order does not matter.
+ */
+static const char * const timezones[NSC_TIME_ZONE__COUNT] = {
+       [NSC_TIME_ZONE_IDLE] = "IDLE",
+       [NSC_TIME_ZONE_NZST] = "NZST",
+       [NSC_TIME_ZONE_NZT]  = "NZT",
+       [NSC_TIME_ZONE_EAST] = "EAST",
+       [NSC_TIME_ZONE_GST]  = "GST",
+       [NSC_TIME_ZONE_JST]  = "JST",
+       [NSC_TIME_ZONE_CCT]  = "CCT",
+       [NSC_TIME_ZONE_WAST] = "WAST",
+       [NSC_TIME_ZONE_EET]  = "EET",
+       [NSC_TIME_ZONE_CET]  = "CET",
+       [NSC_TIME_ZONE_FWT]  = "FWT",
+       [NSC_TIME_ZONE_MET]  = "MET",
+       [NSC_TIME_ZONE_MEWT] = "MEWT",
+       [NSC_TIME_ZONE_GMT]  = "GMT",
+       [NSC_TIME_ZONE_UTC]  = "UTC",
+       [NSC_TIME_ZONE_WET]  = "WET",
+       [NSC_TIME_ZONE_WAT]  = "WAT",
+       [NSC_TIME_ZONE_AST]  = "AST",
+       [NSC_TIME_ZONE_EST]  = "EST",
+       [NSC_TIME_ZONE_CST]  = "CST",
+       [NSC_TIME_ZONE_MST]  = "MST",
+       [NSC_TIME_ZONE_PST]  = "PST",
+       [NSC_TIME_ZONE_YST]  = "YST",
+       [NSC_TIME_ZONE_AHST] = "AHST",
+       [NSC_TIME_ZONE_CAT]  = "CAT",
+       [NSC_TIME_ZONE_HST]  = "HST",
+       [NSC_TIME_ZONE_IDLW] = "IDLW",
+       [NSC_TIME_ZONE_NZDT] = "NZDT",
+       [NSC_TIME_ZONE_EADT] = "EADT",
+       [NSC_TIME_ZONE_WADT] = "WADT",
+       [NSC_TIME_ZONE_CEST] = "CEST",
+       [NSC_TIME_ZONE_FST]  = "FST",
+       [NSC_TIME_ZONE_MEST] = "MEST",
+       [NSC_TIME_ZONE_MESZ] = "MESZ",
+       [NSC_TIME_ZONE_BST]  = "BST",
+       [NSC_TIME_ZONE_ADT]  = "ADT",
+       [NSC_TIME_ZONE_EDT]  = "EDT",
+       [NSC_TIME_ZONE_CDT]  = "CDT",
+       [NSC_TIME_ZONE_MDT]  = "MDT",
+       [NSC_TIME_ZONE_PDT]  = "PDT",
+       [NSC_TIME_ZONE_YDT]  = "YDT",
+       [NSC_TIME_ZONE_HDT]  = "HDT",
+       [NSC_TIME_ZONE_Y]    = "Y",
+       [NSC_TIME_ZONE_X]    = "X",
+       [NSC_TIME_ZONE_W]    = "W",
+       [NSC_TIME_ZONE_V]    = "V",
+       [NSC_TIME_ZONE_U]    = "U",
+       [NSC_TIME_ZONE_T]    = "T",
+       [NSC_TIME_ZONE_S]    = "S",
+       [NSC_TIME_ZONE_R]    = "R",
+       [NSC_TIME_ZONE_Q]    = "Q",
+       [NSC_TIME_ZONE_P]    = "P",
+       [NSC_TIME_ZONE_O]    = "O",
+       [NSC_TIME_ZONE_N]    = "N",
+       [NSC_TIME_ZONE_Z]    = "Z",
+       [NSC_TIME_ZONE_A]    = "A",
+       [NSC_TIME_ZONE_B]    = "B",
+       [NSC_TIME_ZONE_C]    = "C",
+       [NSC_TIME_ZONE_D]    = "D",
+       [NSC_TIME_ZONE_E]    = "E",
+       [NSC_TIME_ZONE_F]    = "F",
+       [NSC_TIME_ZONE_G]    = "G",
+       [NSC_TIME_ZONE_H]    = "H",
+       [NSC_TIME_ZONE_I]    = "I",
+       [NSC_TIME_ZONE_K]    = "K",
+       [NSC_TIME_ZONE_L]    = "L",
+       [NSC_TIME_ZONE_M]    = "M"
+};
+
+/**
+ * Flags for tracking the components of a date that have been parsed.
+ */
+enum nsc_date_component_flags {
+       NSC_COMPONENT_FLAGS_NONE            = 0,
+       NSC_COMPONENT_FLAGS_HAVE_YEARS      = (1 << 0),
+       NSC_COMPONENT_FLAGS_HAVE_MONTHS     = (1 << 1),
+       NSC_COMPONENT_FLAGS_HAVE_DAYS       = (1 << 2),
+       NSC_COMPONENT_FLAGS_HAVE_HOURS      = (1 << 3),
+       NSC_COMPONENT_FLAGS_HAVE_MINS       = (1 << 4),
+       NSC_COMPONENT_FLAGS_HAVE_SECS       = (1 << 5),
+       NSC_COMPONENT_FLAGS_HAVE_TIMEZONE   = (1 << 6),
+       NSC_COMPONENT_FLAGS_HAVE_WEEKDAY    = (1 << 7),
+       NSC_COMPONENT_FLAGS__HAVE_YYYYMMDD  =
+                       NSC_COMPONENT_FLAGS_HAVE_YEARS   |
+                       NSC_COMPONENT_FLAGS_HAVE_MONTHS  |
+                       NSC_COMPONENT_FLAGS_HAVE_DAYS,
+       NSC_COMPONENT_FLAGS__HAVE_HHMMSS    =
+                       NSC_COMPONENT_FLAGS_HAVE_HOURS   |
+                       NSC_COMPONENT_FLAGS_HAVE_MINS    |
+                       NSC_COMPONENT_FLAGS_HAVE_SECS,
+       NSC_COMPONENT_FLAGS__HAVE_ALL       =
+                       NSC_COMPONENT_FLAGS_HAVE_YEARS   |
+                       NSC_COMPONENT_FLAGS_HAVE_MONTHS  |
+                       NSC_COMPONENT_FLAGS_HAVE_DAYS    |
+                       NSC_COMPONENT_FLAGS_HAVE_HOURS   |
+                       NSC_COMPONENT_FLAGS_HAVE_MINS    |
+                       NSC_COMPONENT_FLAGS_HAVE_SECS    |
+                       NSC_COMPONENT_FLAGS_HAVE_TIMEZONE
+};
+
+/**
+ * Context for date parsing.
+ */
+struct nsc_date_parse_ctx {
+       char prev; /**< Used for handling neumenrical timezone */
+       uint8_t secs;
+       uint8_t mins;
+       uint8_t hours;
+       uint8_t day;
+       uint8_t month;
+       uint16_t years;
+       int16_t timezone_offset_mins;
+};
+
+
+/**
+ * Helper for testing whether any of the flags in mask are set.
+ *
+ * \param[in] flags  Flags to to check.
+ * \param[in] mask   The set of flags to check for in `flags`.
+ * \return true iff any flags in `mask` are set in `flags`, else false.
+ */
+static bool flags_chk(
+               enum nsc_date_component_flags flags,
+               enum nsc_date_component_flags mask)
+{
+       return flags & mask;
+}
+
+/**
+ * Helper for testing whether all of the flags in mask are set.
+ *
+ * \param[in] flags  Flags to to check.
+ * \param[in] mask   The set of flags to check for in `flags`.
+ * \return true iff all flags in `mask` are set in `flags`, else false.
+ */
+static bool flags_chk_all(
+               enum nsc_date_component_flags flags,
+               enum nsc_date_component_flags mask)
+{
+       return (flags & mask) == mask;
+}
+
+
+/**
+ * Test for a weekday name in a string (case insensitive).
+ *
+ * \param[in]     str    String to parse a weekday name in.
+ * \param[in]     len    Number of consecutive alphabetical characters.
+ * \param[in,out] flags  Flags indicating which date components have been
+ *                       found in `str` already.  If a weekday component
+ *                       is found, the weekday flag is set.
+ * \return true iff weekday component is found, else false.
+ */
+static inline bool time__parse_weekday(
+               const char *str,
+               size_t len,
+               enum nsc_date_component_flags *flags)
+{
+       const char * const *names = (len == 3) ?
+                       weekdays_short : weekdays_long;
+
+       if (flags_chk(*flags, NSC_COMPONENT_FLAGS_HAVE_WEEKDAY)) {
+               return false;
+       }
+
+       for (uint32_t i = 0; i < NSC_TIME_WEEKDAY__COUNT; i++) {
+               if (ascii_strings_count_equal_caseless(names[i], str) == len) {
+                       *flags |= NSC_COMPONENT_FLAGS_HAVE_WEEKDAY;
+                       return true;
+               }
+       }
+
+       return false;
+}
+
+
+/**
+ * Attempt to parse a month name in a string (case insensitive).
+ *
+ * \param[in]     str    String to parse a month name in.
+ * \param[in]     len    Number of consecutive alphabetical characters.
+ * \param[in,out] flags  Flags indicating which date components have been
+ *                       found in `str` already.  If a month component
+ *                       is found, the month flag is set.
+ * \param[in,out] ctx    Current date parsing context.  If month component
+ *                       is found, the context's month value is set.
+ * \return true iff month name component is found, else false.
+ */
+static inline bool time__parse_month(
+               const char *str,
+               size_t len,
+               enum nsc_date_component_flags *flags,
+               struct nsc_date_parse_ctx *ctx)
+{
+       if (flags_chk(*flags, NSC_COMPONENT_FLAGS_HAVE_MONTHS)) {
+               return false;
+       }
+
+       for (uint32_t i = 0; i < NSC_TIME_MONTH__COUNT; i++) {
+               if (ascii_strings_count_equal_caseless(months[i], str) == len) {
+                       *flags |= NSC_COMPONENT_FLAGS_HAVE_MONTHS;
+                       ctx->month = i;
+                       return true;
+               }
+       }
+
+       return false;
+}
+
+
+/**
+ * Attempt to parse a timezone name in a string (case insensitive).
+ *
+ * \param[in]     str    String to parse a timezone name in.
+ * \param[in]     len    Number of consecutive alphabetical characters.
+ * \param[in,out] flags  Flags indicating which date components have been
+ *                       found in `str` already.  If a timezone component
+ *                       is found, the timezone flag is set.
+ * \param[in,out] ctx    Current date parsing context.  If timezone component
+ *                       is found, the context's timezone value is set.
+ * \return true iff timezone name component is found, else false.
+ */
+static inline bool time__parse_timezone(
+               const char *str,
+               size_t len,
+               enum nsc_date_component_flags *flags,
+               struct nsc_date_parse_ctx *ctx)
+{
+       if (flags_chk(*flags, NSC_COMPONENT_FLAGS_HAVE_TIMEZONE)) {
+               return false;
+       }
+
+       for (uint32_t i = 0; i < NSC_TIME_ZONE__COUNT; i++) {
+               if (ascii_strings_count_equal_caseless(
+                               timezones[i], str) == len) {
+                       *flags |= NSC_COMPONENT_FLAGS_HAVE_TIMEZONE;
+                       ctx->timezone_offset_mins = timezone_mins[i];
+                       return true;
+               }
+       }
+
+       return false;
+}
+
+
+/**
+ * Attempt to parse an "hh:mm:ss" time from a string.
+ *
+ * \param[in]     str    String to parse a time in.
+ * \param[in,out] len    The number of characters until the first non-digit.
+ *                       Iff a time component is found, updated to the number
+ *                       of comsumend characters.
+ * \param[in,out] flags  Flags indicating which date components have been
+ *                       found in `str` already.  If a time component
+ *                       is found, the hours, mins and secs flags are set.
+ * \param[in,out] ctx    Current date parsing context.  If time component
+ *                       is found, the context's time values are set.
+ * \return true iff time component is found, else false.
+ */
+static inline bool time__parse_hh_mm_ss(
+               const char *str,
+               size_t *len,
+               enum nsc_date_component_flags *flags,
+               struct nsc_date_parse_ctx *ctx)
+{
+       size_t l;
+
+       if (*len != 2 || flags_chk(*flags, NSC_COMPONENT_FLAGS__HAVE_HHMMSS)) {
+               return false;
+       }
+
+       l = *len + ascii_count_digit_or_colon(str + *len);
+       if (l == 8) {
+               int h, m, s, count;
+               count = sscanf(str, "%02d:%02d:%02d", &h, &m, &s);
+               if (count == 3) {
+                       ctx->hours = h;
+                       ctx->mins  = m;
+                       ctx->secs  = s;
+                       *flags |= NSC_COMPONENT_FLAGS__HAVE_HHMMSS;
+                       *len = l;
+                       return true;
+               }
+       } else if (l == 5) {
+               int h, m, count;
+               count = sscanf(str, "%02d:%02d", &h, &m);
+               if (count == 2) {
+                       ctx->hours = h;
+                       ctx->mins  = m;
+                       ctx->secs  = 0;
+                       *flags |= NSC_COMPONENT_FLAGS__HAVE_HHMMSS;
+                       *len = l;
+                       return true;
+               }
+       }
+
+       return false;
+}
+
+
+/**
+ * Attempt to parse a number from a date string.
+ *
+ * How the number is treated depends on various things:
+ *
+ * - its character length,
+ * - its value,
+ * - which date components have already been parsed
+ *
+ * \param[in]     str    String to parse a time in.
+ * \param[in]     len    The number of characters until the first non-digit.
+ * \param[in,out] flags  Flags indicating which date components have been
+ *                       found in `str` already.  If any component is found,
+ *                       their flags are set.
+ * \param[in,out] ctx    Current date parsing context.  If any component
+ *                       is found, the appropriate context values are set.
+ * \return true iff a component is found, else false.
+ */
+static inline bool time__parse_number(
+               const char *str,
+               size_t len,
+               enum nsc_date_component_flags *flags,
+               struct nsc_date_parse_ctx *ctx)
+{
+       int value;
+
+       if (len != ascii_string_to_int(str, &value)) {
+               return false;
+       }
+
+       switch (len) {
+       case 8:
+               if (!flags_chk(*flags, NSC_COMPONENT_FLAGS__HAVE_YYYYMMDD)) {
+                       ctx->years  =  value / 10000;
+                       ctx->month = (value % 10000) / 100 - 1;
+                       ctx->day   =  value % 100 - 1;
+                       *flags |= NSC_COMPONENT_FLAGS__HAVE_YYYYMMDD;
+                       return true;
+               }
+               break;
+
+       case 4:
+               if (!flags_chk(*flags, NSC_COMPONENT_FLAGS_HAVE_TIMEZONE)) {
+                       if (ascii_is_sign(ctx->prev) && value <= 1400) {
+                               ctx->timezone_offset_mins =
+                                               value / 100 * 60 +
+                                               value % 100;
+                               if (ctx->prev == '+') {
+                                       ctx->timezone_offset_mins *= -1;
+                               }
+                               *flags |= NSC_COMPONENT_FLAGS_HAVE_TIMEZONE;
+                               return true;
+                       }
+               }
+               if (!flags_chk(*flags, NSC_COMPONENT_FLAGS_HAVE_YEARS)) {
+                       ctx->years = value;
+                       *flags |= NSC_COMPONENT_FLAGS_HAVE_YEARS;
+                       return true;
+               }
+               break;
+
+       case 2:
+       case 1:
+               if (!flags_chk(*flags, NSC_COMPONENT_FLAGS_HAVE_DAYS) &&
+                               value > 0 && value <= 31) {
+                       ctx->day = value - 1;
+                       *flags |= NSC_COMPONENT_FLAGS_HAVE_DAYS;
+                       return true;
+               }
+               if (!flags_chk(*flags, NSC_COMPONENT_FLAGS_HAVE_YEARS)) {
+                       ctx->years = (value > 70) ?
+                                       value + 1900 :
+                                       value + 2000;
+                       *flags |= NSC_COMPONENT_FLAGS_HAVE_YEARS;
+                       return true;
+               }
+               break;
+
+       default:
+               break;
+       }
+
+       return false;
+}
+
+/**
+ * Get number of leap days up until end of given year.
+ *
+ * \param[in] year  Year to count leap years up to.
+ * \return Number of leap days up to end of `year`.
+ */
+static inline int time__get_leap_days(int year)
+{
+       return (year / 4) - (year / 100) + (year / 400);
+}
+
+
+/**
+ * Helper to convert a date string context to a time_t.
+ *
+ * \param[in]  ctx    Current date parsing context.
+ * \param[in]  flags  Flags indicating which date components have been set.
+ * \param[out] time   Returns the number of seconds since 1 Jan 1970 00:00 UTC.
+ * \return NSERROR_OK on success, appropriate error otherwise.
+ */
+static nserror time__ctx_to_time_t(
+               const struct nsc_date_parse_ctx *ctx,
+               enum nsc_date_component_flags flags,
+               time_t *time)
+{
+       enum {
+               NSC_MONTH_DAYS_JAN = 31,
+               NSC_MONTH_DAYS_FEB = 28, /**< Leap years handled separatly */
+               NSC_MONTH_DAYS_MAR = 31,
+               NSC_MONTH_DAYS_APR = 30,
+               NSC_MONTH_DAYS_MAY = 31,
+               NSC_MONTH_DAYS_JUN = 30,
+               NSC_MONTH_DAYS_JUL = 31,
+               NSC_MONTH_DAYS_AUG = 31,
+               NSC_MONTH_DAYS_SEP = 30,
+               NSC_MONTH_DAYS_OCT = 31,
+               NSC_MONTH_DAYS_NOV = 30,
+               NSC_MONTH_DAYS_DEC = 31
+       };
+       enum {
+               NSC_MONTH_OFF_JAN = 0,
+               NSC_MONTH_OFF_FEB = NSC_MONTH_OFF_JAN + NSC_MONTH_DAYS_JAN,
+               NSC_MONTH_OFF_MAR = NSC_MONTH_OFF_FEB + NSC_MONTH_DAYS_FEB,
+               NSC_MONTH_OFF_APR = NSC_MONTH_OFF_MAR + NSC_MONTH_DAYS_MAR,
+               NSC_MONTH_OFF_MAY = NSC_MONTH_OFF_APR + NSC_MONTH_DAYS_APR,
+               NSC_MONTH_OFF_JUN = NSC_MONTH_OFF_MAY + NSC_MONTH_DAYS_MAY,
+               NSC_MONTH_OFF_JUL = NSC_MONTH_OFF_JUN + NSC_MONTH_DAYS_JUN,
+               NSC_MONTH_OFF_AUG = NSC_MONTH_OFF_JUL + NSC_MONTH_DAYS_JUL,
+               NSC_MONTH_OFF_SEP = NSC_MONTH_OFF_AUG + NSC_MONTH_DAYS_AUG,
+               NSC_MONTH_OFF_OCT = NSC_MONTH_OFF_SEP + NSC_MONTH_DAYS_SEP,
+               NSC_MONTH_OFF_NOV = NSC_MONTH_OFF_OCT + NSC_MONTH_DAYS_OCT,
+               NSC_MONTH_OFF_DEC = NSC_MONTH_OFF_NOV + NSC_MONTH_DAYS_NOV
+       };
+       static const uint16_t month_offsets[NSC_TIME_MONTH__COUNT] = {
+               [NSC_TIME_MONTH_JAN] = NSC_MONTH_OFF_JAN,
+               [NSC_TIME_MONTH_FEB] = NSC_MONTH_OFF_FEB,
+               [NSC_TIME_MONTH_MAR] = NSC_MONTH_OFF_MAR,
+               [NSC_TIME_MONTH_APR] = NSC_MONTH_OFF_APR,
+               [NSC_TIME_MONTH_MAY] = NSC_MONTH_OFF_MAY,
+               [NSC_TIME_MONTH_JUN] = NSC_MONTH_OFF_JUN,
+               [NSC_TIME_MONTH_JUL] = NSC_MONTH_OFF_JUL,
+               [NSC_TIME_MONTH_AUG] = NSC_MONTH_OFF_AUG,
+               [NSC_TIME_MONTH_SEP] = NSC_MONTH_OFF_SEP,
+               [NSC_TIME_MONTH_OCT] = NSC_MONTH_OFF_OCT,
+               [NSC_TIME_MONTH_NOV] = NSC_MONTH_OFF_NOV,
+               [NSC_TIME_MONTH_DEC] = NSC_MONTH_OFF_DEC
+       };
+       int year_days = (ctx->years - 1970) * 365;
+       int month_days = month_offsets[ctx->month];
+       int year = (ctx->month < NSC_TIME_MONTH_FEB) ?
+                       ctx->years - 1 : ctx->years;
+       int leap_days = time__get_leap_days(year) - time__get_leap_days(1969);
+       int total_days = year_days + month_days + ctx->day + leap_days;
+
+       int mins = (int)ctx->mins + (int)ctx->timezone_offset_mins;
+
+       *time = (((((time_t)(total_days)) * 24) +
+                       ctx->hours) * 60 +
+                       mins) * 60 +
+                       ctx->secs;
+       return NSERROR_OK;
+}
+
+
+/**
+ * Parse a date string to a `time_t`.
+ *
+ * \param[in]  str   String to parse.
+ * \param[out] time  Returns the number of seconds since 1 Jan 1970 00:00 UTC.
+ * \return `NSERROR_OK` on success, else
+ *         `NSERROR_INVALID` if the string parsing failed,
+ *         appropriate error otherwise.
+ */
+static nserror time__get_date(const char *str, time_t *time)
+{
+       enum nsc_date_component_flags flags = NSC_COMPONENT_FLAGS_NONE;
+       struct nsc_date_parse_ctx ctx = {
+               .prev  = '\0',
+               .secs  = 0,
+               .mins  = 0,
+               .hours = 0,
+               .day   = 0,
+               .month = 0,
+               .years = 0,
+               .timezone_offset_mins = 0
+       };
+
+       if (str == NULL || time == NULL) {
+               return NSERROR_BAD_PARAMETER;
+       }
+
+       /* Parse */
+       while (*str != '\0' &&
+                       !flags_chk_all(flags, NSC_COMPONENT_FLAGS__HAVE_ALL)) {
+               size_t len = 1;
+
+               if (ascii_is_alpha(*str)) {
+                       len += ascii_count_alpha(str + 1);
+
+                       if (!time__parse_weekday(str, len, &flags) &&
+                           !time__parse_month(str, len, &flags, &ctx) &&
+                           !time__parse_timezone(str, len, &flags, &ctx)) {
+                               return NSERROR_INVALID;
+                       }
+
+               } else if (ascii_is_digit(*str)) {
+                       len += ascii_count_digit(str + 1);
+
+                       if (!time__parse_hh_mm_ss(str, &len, &flags, &ctx) &&
+                           !time__parse_number(str, len, &flags, &ctx)) {
+                               return NSERROR_INVALID;
+                       }
+               }
+               ctx.prev = *str;
+               str += len;
+       }
+
+       /* The initial values of 0 are used if hours, mins, secs, and timezone
+        * are not found */
+       flags |= NSC_COMPONENT_FLAGS__HAVE_HHMMSS;
+       flags |= NSC_COMPONENT_FLAGS_HAVE_TIMEZONE;
+
+       /* Validate */
+       if (!flags_chk_all(flags, NSC_COMPONENT_FLAGS__HAVE_ALL)) {
+               return NSERROR_INVALID;
+       }
+       if (ctx.secs > 60 || ctx.mins > 59 || ctx.hours > 23 ||
+                       ctx.day > 31 || ctx.month > 11) {
+               return NSERROR_INVALID;
+       }
+
+       /* Convert */
+       return time__ctx_to_time_t(&ctx, flags, time);
+}
+
+/* exported function documented in utils/time.h */
+nserror nsc_strntimet(const char *str, size_t size, time_t *timep)
+{
+       return time__get_date(str, timep);
+}
+
+# else
+
 /* exported function documented in utils/time.h */
 nserror nsc_strntimet(const char *str, size_t size, time_t *timep)
 {
        time_t result;
 
+       if (str == NULL || timep == NULL) {
+               return NSERROR_BAD_PARAMETER;
+       }
+
        result = curl_getdate(str, NULL);
 
        if (result == -1) {
@@ -130,3 +1001,5 @@ nserror nsc_strntimet(const char *str, size_t size, time_t 
*timep)
 
        return NSERROR_OK;
 }
+
+#endif
diff --git a/utils/url.c b/utils/url.c
index 7a7b7a1..ee84850 100644
--- a/utils/url.c
+++ b/utils/url.c
@@ -35,7 +35,9 @@
 #include <assert.h>
 #include <string.h>
 #include <stdlib.h>
+#include <stdbool.h>
 
+#include "utils/ascii.h"
 #include "utils/config.h"
 #include "utils/log.h"
 #include "utils/url.h"
@@ -92,7 +94,7 @@ nserror url_unescape(const char *str, size_t length,
                        char c1 = *(str + 1);
                        char c2 = *(str + 2);
 
-                       if (c == '%' && isxdigit(c1) && isxdigit(c2)) {
+                       if (c == '%' && ascii_is_hex(c1) && ascii_is_hex(c2)) {
                                c = xdigit_to_hex(c1) << 4 | xdigit_to_hex(c2);
                                str += 2;
                        }


-- 
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