[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/build/uClibc/libc/inet/ethers.c b/ap/build/uClibc/libc/inet/ethers.c
new file mode 100644
index 0000000..857e5d1
--- /dev/null
+++ b/ap/build/uClibc/libc/inet/ethers.c
@@ -0,0 +1,122 @@
+/*
+ * libc/inet/ethers.c
+ *
+ * Programmatic interface for the /etc/ethers file
+ *
+ * Copyright 2007 by Matthew Wilcox <matthew@wil.cx>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <netinet/ether.h>
+
+#define ETHER_LINE_LEN 256
+
+/*
+ * Internal function which returns a pointer to the part of the line
+ * with the start of the hostname, or NULL if we couldn't parse the line.
+ * Note that this line may have a comment symbol on it somewhere; if so
+ * it will return NULL if the # is before or within the ether_addr, and
+ * succeed if the # is before or within the host. It's up to the callers
+ * to be aware of this.
+ *
+ * I would have preferred to write a NUL to the location of the comment
+ * character, but ether_line takes a const argument. See __ether_line_w.
+ */
+static const char *__ether_line(const char *line, struct ether_addr *addr)
+{
+ struct ether_addr *res = ether_aton_r(line, addr);
+ if (!res)
+ return NULL;
+
+ while (*line && (*line != ' ') && (*line != '\t'))
+ line++;
+ while (*line && ((*line == ' ') || (*line == '\t')))
+ line++;
+ return (*line) ? line : NULL;
+}
+
+/*
+ * Strips out the comment before calling __ether_line. We can do this,
+ * since we know the buffer is writable.
+ */
+static const char *__ether_line_w(char *line, struct ether_addr *addr)
+{
+ char *end = strchr(line, '#');
+ if (!end)
+ end = strchr(line, '\n');
+ if (end)
+ *end = '\0';
+ return __ether_line(line, addr);
+}
+
+int ether_line(const char *line, struct ether_addr *addr, char *hostname)
+{
+ const char *name = __ether_line(line, addr);
+ if (!name)
+ return -1;
+
+ while (*name) {
+ if ((*name == '#') || isspace(*name))
+ break;
+ *hostname++ = *name++;
+ }
+ *hostname = '\0';
+
+ return 0;
+}
+
+int ether_ntohost(char *hostname, const struct ether_addr *addr)
+{
+ int res = -1;
+ FILE *fp;
+ char buf[ETHER_LINE_LEN];
+
+ fp = fopen(ETHER_FILE_NAME, "r");
+ if (!fp)
+ return -1;
+
+ while (fgets(buf, sizeof(buf), fp)) {
+ struct ether_addr tmp_addr;
+ const char *cp = __ether_line_w(buf, &tmp_addr);
+ if (!cp)
+ continue;
+ if (memcmp(addr, &tmp_addr, sizeof(tmp_addr)))
+ continue;
+
+ strcpy(hostname, cp);
+ res = 0;
+ break;
+ }
+
+ fclose(fp);
+ return res;
+}
+
+int ether_hostton(const char *hostname, struct ether_addr *addr)
+{
+ int res = -1;
+ FILE *fp;
+ char buf[ETHER_LINE_LEN];
+
+ fp = fopen(ETHER_FILE_NAME, "r");
+ if (!fp)
+ return -1;
+
+ while (fgets(buf, sizeof(buf), fp)) {
+ const char *cp = __ether_line_w(buf, addr);
+ if (!cp)
+ continue;
+ if (strcasecmp(hostname, cp))
+ continue;
+
+ res = 0;
+ break;
+ }
+
+ fclose(fp);
+ return res;
+}