Squashed 'third_party/allwpilib_2019/' content from commit bd05dfa1c
Change-Id: I2b1c2250cdb9b055133780c33593292098c375b7
git-subtree-dir: third_party/allwpilib_2019
git-subtree-split: bd05dfa1c7cca74c4fac451e7b9d6a37e7b53447
diff --git a/wpiutil/src/main/native/libuv/inet.cpp b/wpiutil/src/main/native/libuv/inet.cpp
new file mode 100644
index 0000000..79d6232
--- /dev/null
+++ b/wpiutil/src/main/native/libuv/inet.cpp
@@ -0,0 +1,310 @@
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996-1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#if defined(_MSC_VER) && _MSC_VER < 1600
+# include "uv/stdint-msvc2008.h"
+#else
+# include <stdint.h>
+#endif
+
+#include "uv.h"
+#include "uv-common.h"
+
+#define UV__INET_ADDRSTRLEN 16
+#define UV__INET6_ADDRSTRLEN 46
+
+
+static int inet_ntop4(const unsigned char *src, char *dst, size_t size);
+static int inet_ntop6(const unsigned char *src, char *dst, size_t size);
+static int inet_pton4(const char *src, unsigned char *dst);
+static int inet_pton6(const char *src, unsigned char *dst);
+
+
+int uv_inet_ntop(int af, const void* src, char* dst, size_t size) {
+ switch (af) {
+ case AF_INET:
+ return (inet_ntop4((const unsigned char*)src, dst, size));
+ case AF_INET6:
+ return (inet_ntop6((const unsigned char*)src, dst, size));
+ default:
+ return UV_EAFNOSUPPORT;
+ }
+ /* NOTREACHED */
+}
+
+
+static int inet_ntop4(const unsigned char *src, char *dst, size_t size) {
+ static const char fmt[] = "%u.%u.%u.%u";
+ char tmp[UV__INET_ADDRSTRLEN];
+ int l;
+
+ l = snprintf(tmp, sizeof(tmp), fmt, src[0], src[1], src[2], src[3]);
+ if (l <= 0 || (size_t) l >= size) {
+ return UV_ENOSPC;
+ }
+ strncpy(dst, tmp, size);
+ dst[size - 1] = '\0';
+ return 0;
+}
+
+
+static int inet_ntop6(const unsigned char *src, char *dst, size_t size) {
+ /*
+ * Note that int32_t and int16_t need only be "at least" large enough
+ * to contain a value of the specified size. On some systems, like
+ * Crays, there is no such thing as an integer variable with 16 bits.
+ * Keep this in mind if you think this function should have been coded
+ * to use pointer overlays. All the world's not a VAX.
+ */
+ char tmp[UV__INET6_ADDRSTRLEN], *tp;
+ struct { int base, len; } best, cur;
+ unsigned int words[sizeof(struct in6_addr) / sizeof(uint16_t)];
+ int i;
+
+ /*
+ * Preprocess:
+ * Copy the input (bytewise) array into a wordwise array.
+ * Find the longest run of 0x00's in src[] for :: shorthanding.
+ */
+ memset(words, '\0', sizeof words);
+ for (i = 0; i < (int) sizeof(struct in6_addr); i++)
+ words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3));
+ best.base = -1;
+ best.len = 0;
+ cur.base = -1;
+ cur.len = 0;
+ for (i = 0; i < (int) ARRAY_SIZE(words); i++) {
+ if (words[i] == 0) {
+ if (cur.base == -1)
+ cur.base = i, cur.len = 1;
+ else
+ cur.len++;
+ } else {
+ if (cur.base != -1) {
+ if (best.base == -1 || cur.len > best.len)
+ best = cur;
+ cur.base = -1;
+ }
+ }
+ }
+ if (cur.base != -1) {
+ if (best.base == -1 || cur.len > best.len)
+ best = cur;
+ }
+ if (best.base != -1 && best.len < 2)
+ best.base = -1;
+
+ /*
+ * Format the result.
+ */
+ tp = tmp;
+ for (i = 0; i < (int) ARRAY_SIZE(words); i++) {
+ /* Are we inside the best run of 0x00's? */
+ if (best.base != -1 && i >= best.base &&
+ i < (best.base + best.len)) {
+ if (i == best.base)
+ *tp++ = ':';
+ continue;
+ }
+ /* Are we following an initial run of 0x00s or any real hex? */
+ if (i != 0)
+ *tp++ = ':';
+ /* Is this address an encapsulated IPv4? */
+ if (i == 6 && best.base == 0 && (best.len == 6 ||
+ (best.len == 7 && words[7] != 0x0001) ||
+ (best.len == 5 && words[5] == 0xffff))) {
+ int err = inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp));
+ if (err)
+ return err;
+ tp += strlen(tp);
+ break;
+ }
+ tp += sprintf(tp, "%x", words[i]);
+ }
+ /* Was it a trailing run of 0x00's? */
+ if (best.base != -1 && (best.base + best.len) == ARRAY_SIZE(words))
+ *tp++ = ':';
+ *tp++ = '\0';
+
+ /*
+ * Check for overflow, copy, and we're done.
+ */
+ if ((size_t)(tp - tmp) > size) {
+ return UV_ENOSPC;
+ }
+ strcpy(dst, tmp);
+ return 0;
+}
+
+
+int uv_inet_pton(int af, const char* src, void* dst) {
+ if (src == NULL || dst == NULL)
+ return UV_EINVAL;
+
+ switch (af) {
+ case AF_INET:
+ return (inet_pton4(src, (unsigned char*)dst));
+ case AF_INET6: {
+ int len;
+ char tmp[UV__INET6_ADDRSTRLEN], *s;
+ const char *p;
+ s = (char*) src;
+ p = strchr(src, '%');
+ if (p != NULL) {
+ s = tmp;
+ len = p - src;
+ if (len > UV__INET6_ADDRSTRLEN-1)
+ return UV_EINVAL;
+ memcpy(s, src, len);
+ s[len] = '\0';
+ }
+ return inet_pton6(s, (unsigned char*)dst);
+ }
+ default:
+ return UV_EAFNOSUPPORT;
+ }
+ /* NOTREACHED */
+}
+
+
+static int inet_pton4(const char *src, unsigned char *dst) {
+ static const char digits[] = "0123456789";
+ int saw_digit, octets, ch;
+ unsigned char tmp[sizeof(struct in_addr)], *tp;
+
+ saw_digit = 0;
+ octets = 0;
+ *(tp = tmp) = 0;
+ while ((ch = *src++) != '\0') {
+ const char *pch;
+
+ if ((pch = strchr(digits, ch)) != NULL) {
+ unsigned int nw = *tp * 10 + (pch - digits);
+
+ if (saw_digit && *tp == 0)
+ return UV_EINVAL;
+ if (nw > 255)
+ return UV_EINVAL;
+ *tp = nw;
+ if (!saw_digit) {
+ if (++octets > 4)
+ return UV_EINVAL;
+ saw_digit = 1;
+ }
+ } else if (ch == '.' && saw_digit) {
+ if (octets == 4)
+ return UV_EINVAL;
+ *++tp = 0;
+ saw_digit = 0;
+ } else
+ return UV_EINVAL;
+ }
+ if (octets < 4)
+ return UV_EINVAL;
+ memcpy(dst, tmp, sizeof(struct in_addr));
+ return 0;
+}
+
+
+static int inet_pton6(const char *src, unsigned char *dst) {
+ static const char xdigits_l[] = "0123456789abcdef",
+ xdigits_u[] = "0123456789ABCDEF";
+ unsigned char tmp[sizeof(struct in6_addr)], *tp, *endp, *colonp;
+ const char *xdigits, *curtok;
+ int ch, seen_xdigits;
+ unsigned int val;
+
+ memset((tp = tmp), '\0', sizeof tmp);
+ endp = tp + sizeof tmp;
+ colonp = NULL;
+ /* Leading :: requires some special handling. */
+ if (*src == ':')
+ if (*++src != ':')
+ return UV_EINVAL;
+ curtok = src;
+ seen_xdigits = 0;
+ val = 0;
+ while ((ch = *src++) != '\0') {
+ const char *pch;
+
+ if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
+ pch = strchr((xdigits = xdigits_u), ch);
+ if (pch != NULL) {
+ val <<= 4;
+ val |= (pch - xdigits);
+ if (++seen_xdigits > 4)
+ return UV_EINVAL;
+ continue;
+ }
+ if (ch == ':') {
+ curtok = src;
+ if (!seen_xdigits) {
+ if (colonp)
+ return UV_EINVAL;
+ colonp = tp;
+ continue;
+ } else if (*src == '\0') {
+ return UV_EINVAL;
+ }
+ if (tp + sizeof(uint16_t) > endp)
+ return UV_EINVAL;
+ *tp++ = (unsigned char) (val >> 8) & 0xff;
+ *tp++ = (unsigned char) val & 0xff;
+ seen_xdigits = 0;
+ val = 0;
+ continue;
+ }
+ if (ch == '.' && ((tp + sizeof(struct in_addr)) <= endp)) {
+ int err = inet_pton4(curtok, tp);
+ if (err == 0) {
+ tp += sizeof(struct in_addr);
+ seen_xdigits = 0;
+ break; /*%< '\\0' was seen by inet_pton4(). */
+ }
+ }
+ return UV_EINVAL;
+ }
+ if (seen_xdigits) {
+ if (tp + sizeof(uint16_t) > endp)
+ return UV_EINVAL;
+ *tp++ = (unsigned char) (val >> 8) & 0xff;
+ *tp++ = (unsigned char) val & 0xff;
+ }
+ if (colonp != NULL) {
+ /*
+ * Since some memmove()'s erroneously fail to handle
+ * overlapping regions, we'll do the shift by hand.
+ */
+ const int n = tp - colonp;
+ int i;
+
+ if (tp == endp)
+ return UV_EINVAL;
+ for (i = 1; i <= n; i++) {
+ endp[- i] = colonp[n - i];
+ colonp[n - i] = 0;
+ }
+ tp = endp;
+ }
+ if (tp != endp)
+ return UV_EINVAL;
+ memcpy(dst, tmp, sizeof tmp);
+ return 0;
+}