read: Fix double validation and infinity parsing
The ',' protocol byte gets removed in processItem(), so it should not be compared against in processLineItem(). strtod() allows multiple representations of infinity and NaN that are not RESP3 compliant. Since we explicitly check for the two compliant infinity cases, strtod() should only return finite values.master
parent
8039c7d26c
commit
f913e9b997
10
read.c
10
read.c
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@ -299,13 +299,17 @@ static int processLineItem(redisReader *r) {
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memcpy(buf,p,len);
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buf[len] = '\0';
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if (strcasecmp(buf,",inf") == 0) {
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if (strcasecmp(buf,"inf") == 0) {
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d = INFINITY; /* Positive infinite. */
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} else if (strcasecmp(buf,",-inf") == 0) {
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} else if (strcasecmp(buf,"-inf") == 0) {
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d = -INFINITY; /* Negative infinite. */
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} else {
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d = strtod((char*)buf,&eptr);
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if (buf[0] == '\0' || eptr[0] != '\0' || isnan(d)) {
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/* RESP3 only allows "inf", "-inf", and finite values, while
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* strtod() allows other variations on infinity, NaN,
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* etc. We explicity handle our two allowed infinite cases
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* above, so strtod() should only result in finite values. */
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if (buf[0] == '\0' || eptr[0] != '\0' || !isfinite(d)) {
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__redisReaderSetError(r,REDIS_ERR_PROTOCOL,
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"Bad double value");
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return REDIS_ERR;
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