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authorKrutika Dhananjay <kdhananj@redhat.com>2012-11-23 10:33:12 +0530
committerAnand Avati <avati@redhat.com>2012-12-10 14:18:17 -0800
commit845aba3ddcfaf7bcef283002b7b5bbf2075d4539 (patch)
treedf3c803ed422683ce7b2b75a0a8f52d542003329 /libglusterfs/src/options.c
parent07c40a2d149f9adfa4ce400051c1313127349192 (diff)
glusterd: fail vol set when value = empty string/string with all whitespaces
PROBLEM: 'volume set' operation accepts empty strings and strings containing all whitespaces for value. The result - subsequent attempts to start glusterd fail. FIX: Added relevant checks in xlator_option_validate_* functions in options.c and in conversion functions in common-utils.c to invalidate wrong option values. Change-Id: I33232c6b42ab4fcce85c2d0e0b0da145fc9232c3 BUG: 859927 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/4033 Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'libglusterfs/src/options.c')
-rw-r--r--libglusterfs/src/options.c111
1 files changed, 73 insertions, 38 deletions
diff --git a/libglusterfs/src/options.c b/libglusterfs/src/options.c
index f8ebb94c6..5d436bab3 100644
--- a/libglusterfs/src/options.c
+++ b/libglusterfs/src/options.c
@@ -228,6 +228,46 @@ out:
return ret;
}
+void
+set_error_str (char *errstr, size_t len, volume_option_t *opt, const char *key,
+ const char *value)
+{
+ int i = 0;
+ char given_array[4096] = {0,};
+
+ for (i = 0; (i < ZR_OPTION_MAX_ARRAY_SIZE) && opt->value[i];) {
+ strcat (given_array, opt->value[i]);
+ if (((++i) < ZR_OPTION_MAX_ARRAY_SIZE) &&
+ (opt->value[i]))
+ strcat (given_array, ", ");
+ else
+ strcat (given_array, ".");
+ }
+ snprintf (errstr, len, "option %s %s: '%s' is not valid "
+ "(possible options are %s)", key, value, value, given_array);
+ return;
+}
+
+int
+is_all_whitespaces (const char *value)
+{
+ int i = 0;
+ size_t len = 0;
+
+ if (value == NULL)
+ return -1;
+
+ len = strlen (value);
+
+ for (i = 0; i < len; i++) {
+ if (value[i] == ' ')
+ continue;
+ else
+ return 0;
+ }
+
+ return 1;
+}
static int
xlator_option_validate_str (xlator_t *xl, const char *key, const char *value,
@@ -235,8 +275,7 @@ xlator_option_validate_str (xlator_t *xl, const char *key, const char *value,
{
int ret = -1;
int i = 0;
- char errstr[256];
- char given_array[4096] = {0,};
+ char errstr[4096] = {0,};
/* Check if the '*str' is valid */
if (GF_OPTION_LIST_EMPTY(opt)) {
@@ -244,6 +283,9 @@ xlator_option_validate_str (xlator_t *xl, const char *key, const char *value,
goto out;
}
+ if (is_all_whitespaces (value) == 1)
+ goto out;
+
for (i = 0; (i < ZR_OPTION_MAX_ARRAY_SIZE) && opt->value[i]; i++) {
#ifdef GF_DARWIN_HOST_OS
if (fnmatch (opt->value[i], value, 0) == 0) {
@@ -258,8 +300,8 @@ xlator_option_validate_str (xlator_t *xl, const char *key, const char *value,
#endif
}
- if (((i < ZR_OPTION_MAX_ARRAY_SIZE) && (!opt->value[i])) ||
- (i == ZR_OPTION_MAX_ARRAY_SIZE)) {
+ if ((i == ZR_OPTION_MAX_ARRAY_SIZE) || (!opt->value[i]))
+ goto out;
/* enter here only if
* 1. reached end of opt->value array and haven't
* validated input
@@ -269,26 +311,15 @@ xlator_option_validate_str (xlator_t *xl, const char *key, const char *value,
* matched all possible input values.
*/
- for (i = 0; (i < ZR_OPTION_MAX_ARRAY_SIZE) && opt->value[i];) {
- strcat (given_array, opt->value[i]);
- if (((++i) < ZR_OPTION_MAX_ARRAY_SIZE) &&
- (opt->value[i]))
- strcat (given_array, ", ");
- else
- strcat (given_array, ".");
- }
- snprintf (errstr, 256,
- "option %s %s: '%s' is not valid "
- "(possible options are %s)",
- key, value, value, given_array);
- gf_log (xl->name, GF_LOG_ERROR, "%s", errstr);
- goto out;
- }
-
ret = 0;
+
out:
- if (ret && op_errstr)
- *op_errstr = gf_strdup (errstr);
+ if (ret) {
+ set_error_str (errstr, sizeof (errstr), opt, key, value);
+ gf_log (xl->name, GF_LOG_ERROR, "%s", errstr);
+ if (op_errstr)
+ *op_errstr = gf_strdup (errstr);
+ }
return ret;
}
@@ -513,32 +544,31 @@ xlator_option_validate_addr_list (xlator_t *xl, const char *key,
char *dup_val = NULL;
char *addr_tok = NULL;
char *save_ptr = NULL;
- char errstr[256];
+ char errstr[4096] = {0,};
dup_val = gf_strdup (value);
- if (!dup_val) {
- ret = -1;
- snprintf (errstr, 256, "internal error, out of memory.");
+ if (!dup_val)
goto out;
- }
addr_tok = strtok_r (dup_val, ",", &save_ptr);
+ if (addr_tok == NULL)
+ goto out;
while (addr_tok) {
- if (!valid_internet_address (addr_tok, _gf_true)) {
- snprintf (errstr, 256,
- "option %s %s: '%s' is not a valid "
- "internet-address-list",
- key, value, value);
- gf_log (xl->name, GF_LOG_ERROR, "%s", errstr);
- ret = -1;
+ if (!valid_internet_address (addr_tok, _gf_true))
goto out;
- }
+
addr_tok = strtok_r (NULL, ",", &save_ptr);
}
ret = 0;
- out:
- if (op_errstr && ret)
- *op_errstr = gf_strdup (errstr);
+
+out:
+ if (ret) {
+ snprintf (errstr, sizeof (errstr), "option %s %s: '%s' is not "
+ "a valid internet-address-list", key, value, value);
+ gf_log (xl->name, GF_LOG_ERROR, "%s", errstr);
+ if (op_errstr)
+ *op_errstr = gf_strdup (errstr);
+ }
GF_FREE (dup_val);
return ret;
@@ -595,6 +625,10 @@ validate_list_elements (const char *string, volume_option_t *opt,
goto out;
str_ptr = strtok_r (dup_string, ",", &str_sav);
+ if (str_ptr == NULL) {
+ ret = -1;
+ goto out;
+ }
while (str_ptr) {
key = strtok_r (str_ptr, ":", &substr_sav);
@@ -620,6 +654,7 @@ validate_list_elements (const char *string, volume_option_t *opt,
str_ptr = strtok_r (NULL, ",", &str_sav);
substr_sav = NULL;
}
+
out:
GF_FREE (dup_string);
gf_log (THIS->name, GF_LOG_DEBUG, "Returning %d", ret);