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-rw-r--r--app/nginx/src/core/ngx_parse_time.c276
1 files changed, 276 insertions, 0 deletions
diff --git a/app/nginx/src/core/ngx_parse_time.c b/app/nginx/src/core/ngx_parse_time.c
new file mode 100644
index 0000000..13afde3
--- /dev/null
+++ b/app/nginx/src/core/ngx_parse_time.c
@@ -0,0 +1,276 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+static ngx_uint_t mday[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
+
+time_t
+ngx_parse_http_time(u_char *value, size_t len)
+{
+ u_char *p, *end;
+ ngx_int_t month;
+ ngx_uint_t day, year, hour, min, sec;
+ uint64_t time;
+ enum {
+ no = 0,
+ rfc822, /* Tue, 10 Nov 2002 23:50:13 */
+ rfc850, /* Tuesday, 10-Dec-02 23:50:13 */
+ isoc /* Tue Dec 10 23:50:13 2002 */
+ } fmt;
+
+ fmt = 0;
+ end = value + len;
+
+#if (NGX_SUPPRESS_WARN)
+ day = 32;
+ year = 2038;
+#endif
+
+ for (p = value; p < end; p++) {
+ if (*p == ',') {
+ break;
+ }
+
+ if (*p == ' ') {
+ fmt = isoc;
+ break;
+ }
+ }
+
+ for (p++; p < end; p++)
+ if (*p != ' ') {
+ break;
+ }
+
+ if (end - p < 18) {
+ return NGX_ERROR;
+ }
+
+ if (fmt != isoc) {
+ if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') {
+ return NGX_ERROR;
+ }
+
+ day = (*p - '0') * 10 + *(p + 1) - '0';
+ p += 2;
+
+ if (*p == ' ') {
+ if (end - p < 18) {
+ return NGX_ERROR;
+ }
+ fmt = rfc822;
+
+ } else if (*p == '-') {
+ fmt = rfc850;
+
+ } else {
+ return NGX_ERROR;
+ }
+
+ p++;
+ }
+
+ switch (*p) {
+
+ case 'J':
+ month = *(p + 1) == 'a' ? 0 : *(p + 2) == 'n' ? 5 : 6;
+ break;
+
+ case 'F':
+ month = 1;
+ break;
+
+ case 'M':
+ month = *(p + 2) == 'r' ? 2 : 4;
+ break;
+
+ case 'A':
+ month = *(p + 1) == 'p' ? 3 : 7;
+ break;
+
+ case 'S':
+ month = 8;
+ break;
+
+ case 'O':
+ month = 9;
+ break;
+
+ case 'N':
+ month = 10;
+ break;
+
+ case 'D':
+ month = 11;
+ break;
+
+ default:
+ return NGX_ERROR;
+ }
+
+ p += 3;
+
+ if ((fmt == rfc822 && *p != ' ') || (fmt == rfc850 && *p != '-')) {
+ return NGX_ERROR;
+ }
+
+ p++;
+
+ if (fmt == rfc822) {
+ if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9'
+ || *(p + 2) < '0' || *(p + 2) > '9'
+ || *(p + 3) < '0' || *(p + 3) > '9')
+ {
+ return NGX_ERROR;
+ }
+
+ year = (*p - '0') * 1000 + (*(p + 1) - '0') * 100
+ + (*(p + 2) - '0') * 10 + *(p + 3) - '0';
+ p += 4;
+
+ } else if (fmt == rfc850) {
+ if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') {
+ return NGX_ERROR;
+ }
+
+ year = (*p - '0') * 10 + *(p + 1) - '0';
+ year += (year < 70) ? 2000 : 1900;
+ p += 2;
+ }
+
+ if (fmt == isoc) {
+ if (*p == ' ') {
+ p++;
+ }
+
+ if (*p < '0' || *p > '9') {
+ return NGX_ERROR;
+ }
+
+ day = *p++ - '0';
+
+ if (*p != ' ') {
+ if (*p < '0' || *p > '9') {
+ return NGX_ERROR;
+ }
+
+ day = day * 10 + *p++ - '0';
+ }
+
+ if (end - p < 14) {
+ return NGX_ERROR;
+ }
+ }
+
+ if (*p++ != ' ') {
+ return NGX_ERROR;
+ }
+
+ if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') {
+ return NGX_ERROR;
+ }
+
+ hour = (*p - '0') * 10 + *(p + 1) - '0';
+ p += 2;
+
+ if (*p++ != ':') {
+ return NGX_ERROR;
+ }
+
+ if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') {
+ return NGX_ERROR;
+ }
+
+ min = (*p - '0') * 10 + *(p + 1) - '0';
+ p += 2;
+
+ if (*p++ != ':') {
+ return NGX_ERROR;
+ }
+
+ if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9') {
+ return NGX_ERROR;
+ }
+
+ sec = (*p - '0') * 10 + *(p + 1) - '0';
+
+ if (fmt == isoc) {
+ p += 2;
+
+ if (*p++ != ' ') {
+ return NGX_ERROR;
+ }
+
+ if (*p < '0' || *p > '9' || *(p + 1) < '0' || *(p + 1) > '9'
+ || *(p + 2) < '0' || *(p + 2) > '9'
+ || *(p + 3) < '0' || *(p + 3) > '9')
+ {
+ return NGX_ERROR;
+ }
+
+ year = (*p - '0') * 1000 + (*(p + 1) - '0') * 100
+ + (*(p + 2) - '0') * 10 + *(p + 3) - '0';
+ }
+
+ if (hour > 23 || min > 59 || sec > 59) {
+ return NGX_ERROR;
+ }
+
+ if (day == 29 && month == 1) {
+ if ((year & 3) || ((year % 100 == 0) && (year % 400) != 0)) {
+ return NGX_ERROR;
+ }
+
+ } else if (day > mday[month]) {
+ return NGX_ERROR;
+ }
+
+ /*
+ * shift new year to March 1 and start months from 1 (not 0),
+ * it is needed for Gauss' formula
+ */
+
+ if (--month <= 0) {
+ month += 12;
+ year -= 1;
+ }
+
+ /* Gauss' formula for Gregorian days since March 1, 1 BC */
+
+ time = (uint64_t) (
+ /* days in years including leap years since March 1, 1 BC */
+
+ 365 * year + year / 4 - year / 100 + year / 400
+
+ /* days before the month */
+
+ + 367 * month / 12 - 30
+
+ /* days before the day */
+
+ + day - 1
+
+ /*
+ * 719527 days were between March 1, 1 BC and March 1, 1970,
+ * 31 and 28 days were in January and February 1970
+ */
+
+ - 719527 + 31 + 28) * 86400 + hour * 3600 + min * 60 + sec;
+
+#if (NGX_TIME_T_SIZE <= 4)
+
+ if (time > 0x7fffffff) {
+ return NGX_ERROR;
+ }
+
+#endif
+
+ return (time_t) time;
+}