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authorDenis Vlasenko2007-02-27 21:15:08 +0000
committerDenis Vlasenko2007-02-27 21:15:08 +0000
commit5066473d411d6a474af3393d1b62a58ee3313861 (patch)
tree7649f98fbe056b9b7f87893f70b5b50cc5007fe9 /networking/udhcp/files.c
parent966bb4376665e0cf22e64f7901fb956edbd2f1a9 (diff)
downloadbusybox-5066473d411d6a474af3393d1b62a58ee3313861.zip
busybox-5066473d411d6a474af3393d1b62a58ee3313861.tar.gz
udhcp: optionally support RFC3397 (by Gabriel L. Somlo <somlo@cmu.edu>)
Diffstat (limited to 'networking/udhcp/files.c')
-rw-r--r--networking/udhcp/files.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/networking/udhcp/files.c b/networking/udhcp/files.c
index e35f50a..ab6f4a3 100644
--- a/networking/udhcp/files.c
+++ b/networking/udhcp/files.c
@@ -104,6 +104,12 @@ static void attach_option(struct option_set **opt_list,
if (!existing) {
DEBUG("Attaching option %s to list", option->name);
+#if ENABLE_FEATURE_RFC3397
+ if ((option->flags & TYPE_MASK) == OPTION_STR1035)
+ /* reuse buffer and length for RFC1035-formatted string */
+ buffer = dname_enc(NULL, 0, buffer, &length);
+#endif
+
/* make a new option */
new = xmalloc(sizeof(struct option_set));
new->data = xmalloc(length + 2);
@@ -117,12 +123,22 @@ static void attach_option(struct option_set **opt_list,
new->next = *curr;
*curr = new;
+#if ENABLE_FEATURE_RFC3397
+ if ((option->flags & TYPE_MASK) == OPTION_STR1035 && buffer != NULL)
+ free(buffer);
+#endif
return;
}
/* add it to an existing option */
DEBUG("Attaching option %s to existing member of list", option->name);
if (option->flags & OPTION_LIST) {
+#if ENABLE_FEATURE_RFC3397
+ if ((option->flags & TYPE_MASK) == OPTION_STR1035)
+ /* reuse buffer and length for RFC1035-formatted string */
+ buffer = dname_enc(existing->data + 2,
+ existing->data[OPT_LEN], buffer, &length);
+#endif
if (existing->data[OPT_LEN] + length <= 255) {
existing->data = xrealloc(existing->data,
existing->data[OPT_LEN] + length + 3);
@@ -137,6 +153,10 @@ static void attach_option(struct option_set **opt_list,
memcpy(existing->data + existing->data[OPT_LEN] + 2, buffer, length);
existing->data[OPT_LEN] += length;
} /* else, ignore the data, we could put this in a second option in the future */
+#if ENABLE_FEATURE_RFC3397
+ if ((option->flags & TYPE_MASK) == OPTION_STR1035 && buffer != NULL)
+ free(buffer);
+#endif
} /* else, ignore the new data */
}
@@ -183,6 +203,9 @@ static int read_opt(const char *const_line, void *arg)
if (retval) retval = read_ip(val, buffer + 4);
break;
case OPTION_STRING:
+#if ENABLE_FEATURE_RFC3397
+ case OPTION_STR1035:
+#endif
length = strlen(val);
if (length > 0) {
if (length > 254) length = 254;