Add axTLS sourcecode

[project/luci.git] / libs / nixio / axTLS / httpd / tdate_parse.c

diff --git a/libs/nixio/axTLS/httpd/tdate_parse.c b/libs/nixio/axTLS/httpd/tdate_parse.c
new file mode 100644 (file)
index 0000000..813bdc5
--- /dev/null
+++ b/libs/nixio/axTLS/httpd/tdate_parse.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2007, Cameron Rich
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, 
+ *   this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice, 
+ *   this list of conditions and the following disclaimer in the documentation 
+ *   and/or other materials provided with the distribution.
+ * * Neither the name of the axTLS project nor the names of its contributors 
+ *   may be used to endorse or promote products derived from this software 
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include "axhttp.h"
+
+struct day_mon_map 
+{
+    const char* s;
+    uint8_t l;
+};
+
+static struct day_mon_map wday_tab[] = 
+{
+    { "Sun", 0 }, { "Mon", 1 }, { "Tue", 2 }, { "Wed", 3 },
+    { "Thu", 4 }, { "Fri", 5 }, { "Sat", 6 }, 
+};
+
+static struct day_mon_map mon_tab[] = 
+{
+    { "Jan", 0 }, { "Feb", 1 }, { "Mar", 2 }, { "Apr", 3 },
+    { "May", 4 }, { "Jun", 5 }, { "Jul", 6 }, { "Aug", 7 },
+    { "Sep", 8 }, { "Oct", 9 }, { "Nov", 10 }, { "Dec", 11 },
+};
+
+static int day_mon_map_compare(const char *v1, const char *v2)
+{
+    return strcmp(((struct day_mon_map*)v1)->s, ((struct day_mon_map*)v2)->s);
+}
+
+void tdate_init(void)
+{
+    qsort(wday_tab, sizeof(wday_tab)/sizeof(struct day_mon_map),
+            sizeof(struct day_mon_map), 
+            (int (*)(const void *, const void *))day_mon_map_compare);
+    qsort(mon_tab, sizeof(mon_tab)/sizeof(struct day_mon_map),
+            sizeof(struct day_mon_map), 
+            (int (*)(const void *, const void *))day_mon_map_compare);
+}
+
+static int8_t day_mon_map_search(const char* str, 
+                            const struct day_mon_map* tab, int n)
+{
+    struct day_mon_map *search = bsearch(&str, tab, n,
+            sizeof(struct day_mon_map), 
+                (int (*)(const void *, const void *))day_mon_map_compare);
+    return search ? search->l : -1;
+}
+
+time_t tdate_parse(const char* str)
+{
+    struct tm tm;
+    char str_mon[4], str_wday[4];
+    int tm_sec, tm_min, tm_hour, tm_mday, tm_year;
+
+    /* Initialize. */
+    memset(&tm, 0, sizeof(struct tm));
+
+    /* wdy, DD mth YY HH:MM:SS GMT */
+    if ((sscanf(str, "%3[a-zA-Z], %d %3[a-zA-Z] %d %d:%d:%d GMT",
+                str_wday, &tm_mday, str_mon, &tm_year, &tm_hour, &tm_min,
+                    &tm_sec) == 7) ||
+    /* wdy mth DD HH:MM:SS YY */
+        (sscanf(str, "%3[a-zA-Z] %3[a-zA-Z] %d %d:%d:%d %d",
+                str_wday, str_mon, &tm_mday, &tm_hour, &tm_min, &tm_sec,
+                    &tm_year) == 7))
+    {
+        int8_t tm_wday = day_mon_map_search(str_wday, wday_tab, 
+                        sizeof(wday_tab)/sizeof(struct day_mon_map));
+        int8_t tm_mon = day_mon_map_search(str_mon, mon_tab, 
+                        sizeof(mon_tab)/sizeof(struct day_mon_map));
+
+        if (tm_wday < 0 || tm_mon < 0)
+            return -1;
+
+        tm.tm_wday = tm_wday;
+        tm.tm_mon = tm_mon;
+        tm.tm_mday = tm_mday;
+        tm.tm_hour = tm_hour;
+        tm.tm_min = tm_min;
+        tm.tm_sec = tm_sec;
+        tm.tm_year = tm_year - 1900;
+        return mktime(&tm);
+    }
+
+    return -1;  /* error */
+}