Comments about security of slave-read-only in redis.coinf.

[redis.git] / src / object.c

diff --git a/src/object.c b/src/object.c
index fd7786ed6e463a8ec6b1e225857b166a4f307244..ccb07208511c45e593d07f6bc0e80cc78ce6d4e0 100644 (file)
--- a/src/object.c
+++ b/src/object.c
@@ -1,5 +1,6 @@
 #include "redis.h"
 #include <math.h>
+#include <ctype.h>
 
 robj *createObject(int type, void *ptr) {
     robj *o = zmalloc(sizeof(*o));
@@ -44,6 +45,21 @@ robj *createStringObjectFromLongLong(long long value) {
     return o;
 }
 
+/* Note: this function is defined into object.c since here it is where it
+ * belongs but it is actually designed to be used just for INCRBYFLOAT */
+robj *createStringObjectFromLongDouble(long double value) {
+    char buf[256];
+    int len;
+
+    /* We use 17 digits precision since with 128 bit floats that precision
+     * after rouding is able to represent most small decimal numbers in a way
+     * that is "non surprising" for the user (that is, most small decimal
+     * numbers will be represented in a way that when converted back into
+     * a string are exactly the same as what the user typed.) */
+    len = snprintf(buf,sizeof(buf),"%.17Lg", value);
+    return createStringObject(buf,len);
+}
+
 robj *dupStringObject(robj *o) {
     redisAssertWithInfo(NULL,o,o->encoding == REDIS_ENCODING_RAW);
     return createStringObject(o->ptr,sdslen(o->ptr));
@@ -79,12 +95,9 @@ robj *createIntsetObject(void) {
 }
 
 robj *createHashObject(void) {
-    /* All the Hashes start as zipmaps. Will be automatically converted
-     * into hash tables if there are enough elements or big elements
-     * inside. */
-    unsigned char *zm = zipmapNew();
-    robj *o = createObject(REDIS_HASH,zm);
-    o->encoding = REDIS_ENCODING_ZIPMAP;
+    unsigned char *zl = ziplistNew();
+    robj *o = createObject(REDIS_HASH, zl);
+    o->encoding = REDIS_ENCODING_ZIPLIST;
     return o;
 }
 
@@ -160,7 +173,7 @@ void freeHashObject(robj *o) {
     case REDIS_ENCODING_HT:
         dictRelease((dict*) o->ptr);
         break;
-    case REDIS_ENCODING_ZIPMAP:
+    case REDIS_ENCODING_ZIPLIST:
         zfree(o->ptr);
         break;
     default:
@@ -350,15 +363,17 @@ int getDoubleFromObject(robj *o, double *target) {
     } else {
         redisAssertWithInfo(NULL,o,o->type == REDIS_STRING);
         if (o->encoding == REDIS_ENCODING_RAW) {
+            errno = 0;
             value = strtod(o->ptr, &eptr);
-            if (eptr[0] != '\0' || isnan(value)) return REDIS_ERR;
+            if (isspace(((char*)o->ptr)[0]) || eptr[0] != '\0' ||
+                errno == ERANGE || isnan(value))
+                return REDIS_ERR;
         } else if (o->encoding == REDIS_ENCODING_INT) {
             value = (long)o->ptr;
         } else {
             redisPanic("Unknown string encoding");
         }
     }
-
     *target = value;
     return REDIS_OK;
 }
@@ -369,11 +384,48 @@ int getDoubleFromObjectOrReply(redisClient *c, robj *o, double *target, const ch
         if (msg != NULL) {
             addReplyError(c,(char*)msg);
         } else {
-            addReplyError(c,"value is not a double");
+            addReplyError(c,"value is not a valid float");
         }
         return REDIS_ERR;
     }
+    *target = value;
+    return REDIS_OK;
+}
+
+int getLongDoubleFromObject(robj *o, long double *target) {
+    long double value;
+    char *eptr;
+
+    if (o == NULL) {
+        value = 0;
+    } else {
+        redisAssertWithInfo(NULL,o,o->type == REDIS_STRING);
+        if (o->encoding == REDIS_ENCODING_RAW) {
+            errno = 0;
+            value = strtold(o->ptr, &eptr);
+            if (isspace(((char*)o->ptr)[0]) || eptr[0] != '\0' ||
+                errno == ERANGE || isnan(value))
+                return REDIS_ERR;
+        } else if (o->encoding == REDIS_ENCODING_INT) {
+            value = (long)o->ptr;
+        } else {
+            redisPanic("Unknown string encoding");
+        }
+    }
+    *target = value;
+    return REDIS_OK;
+}
 
+int getLongDoubleFromObjectOrReply(redisClient *c, robj *o, long double *target, const char *msg) {
+    long double value;
+    if (getLongDoubleFromObject(o, &value) != REDIS_OK) {
+        if (msg != NULL) {
+            addReplyError(c,(char*)msg);
+        } else {
+            addReplyError(c,"value is not a valid float");
+        }
+        return REDIS_ERR;
+    }
     *target = value;
     return REDIS_OK;
 }
@@ -387,9 +439,10 @@ int getLongLongFromObject(robj *o, long long *target) {
     } else {
         redisAssertWithInfo(NULL,o,o->type == REDIS_STRING);
         if (o->encoding == REDIS_ENCODING_RAW) {
+            errno = 0;
             value = strtoll(o->ptr, &eptr, 10);
-            if (eptr[0] != '\0') return REDIS_ERR;
-            if (errno == ERANGE && (value == LLONG_MIN || value == LLONG_MAX))
+            if (isspace(((char*)o->ptr)[0]) || eptr[0] != '\0' ||
+                errno == ERANGE)
                 return REDIS_ERR;
         } else if (o->encoding == REDIS_ENCODING_INT) {
             value = (long)o->ptr;
@@ -397,7 +450,6 @@ int getLongLongFromObject(robj *o, long long *target) {
             redisPanic("Unknown string encoding");
         }
     }
-
     if (target) *target = value;
     return REDIS_OK;
 }
@@ -412,7 +464,6 @@ int getLongLongFromObjectOrReply(redisClient *c, robj *o, long long *target, con
         }
         return REDIS_ERR;
     }
-
     *target = value;
     return REDIS_OK;
 }
@@ -429,7 +480,6 @@ int getLongFromObjectOrReply(redisClient *c, robj *o, long *target, const char *
         }
         return REDIS_ERR;
     }
-
     *target = value;
     return REDIS_OK;
 }
@@ -439,7 +489,6 @@ char *strEncoding(int encoding) {
     case REDIS_ENCODING_RAW: return "raw";
     case REDIS_ENCODING_INT: return "int";
     case REDIS_ENCODING_HT: return "hashtable";
-    case REDIS_ENCODING_ZIPMAP: return "zipmap";
     case REDIS_ENCODING_LINKEDLIST: return "linkedlist";
     case REDIS_ENCODING_ZIPLIST: return "ziplist";
     case REDIS_ENCODING_INTSET: return "intset";