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Merge branch 'tor-github/pr/1316'

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This commit is contained in:
George Kadianakis 2019-09-16 15:22:18 +03:00
commit cd72850e08
3 changed files with 39 additions and 2 deletions
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5
changes/ticket31475 Normal file
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@ -0,0 +1,5 @@
o Minor bugfixes (configuration):
- Invalid floating-point values in the configuration file are now
detected treated as errors in the configuration. Previously, they
were ignored and treated as zero. Fixes bug 31475; bugfix on
0.0.1.

20
src/lib/confmgt/type_defs.c
View File

@ -37,6 +37,7 @@
#include <stddef.h>
#include <string.h>
#include <errno.h>
//////
// CONFIG_TYPE_STRING
@ -283,8 +284,23 @@ double_parse(void *target, const char *value, char **errmsg,
(void)params;
(void)errmsg;
double *v = (double*)target;
// XXXX This is the preexisting behavior, but we should detect errors here.
*v = atof(value);
char *endptr=NULL;
errno = 0;
*v = strtod(value, &endptr);
if (endptr == value || *endptr != '\0') {
// Either there are no converted characters, or there were some characters
// that didn't get converted.
tor_asprintf(errmsg, "Could not convert %s to a number.", escaped(value));
return -1;
}
if (errno == ERANGE) {
// strtod will set errno to ERANGE on underflow or overflow.
bool underflow = -.00001 < *v && *v < .00001;
tor_asprintf(errmsg,
"%s is too %s to express as a floating-point number.",
escaped(value), underflow ? "small" : "large");
return -1;
}
return 0;
}

16
src/test/test_confparse.c
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@ -488,6 +488,16 @@ test_confparse_assign_badval(void *arg)
static const badval_test_t bv_notint = { "pos X\n", "malformed" };
static const badval_test_t bv_negint = { "pos -10\n", "out of bounds" };
static const badval_test_t bv_badu64 = { "u64 u64\n", "malformed" };
static const badval_test_t bv_dbl1 = { "dbl xxx\n", "Could not convert" };
static const badval_test_t bv_dbl2 = { "dbl 1.0 xx\n", "Could not convert" };
static const badval_test_t bv_dbl3 = {
"dbl 1e-10000\n", "too small to express" };
static const badval_test_t bv_dbl4 = {
"dbl 1e1000\n", "too large to express" };
static const badval_test_t bv_dbl5 = {
"dbl -1e-10000\n", "too small to express" };
static const badval_test_t bv_dbl6 = {
"dbl -1e1000\n", "too large to express" };
static const badval_test_t bv_badcsvi1 =
{ "csv_interval 10 wl\n", "malformed" };
static const badval_test_t bv_badcsvi2 =
@ -1045,6 +1055,12 @@ struct testcase_t confparse_tests[] = {
BADVAL_TEST(notint),
BADVAL_TEST(negint),
BADVAL_TEST(badu64),
BADVAL_TEST(dbl1),
BADVAL_TEST(dbl2),
BADVAL_TEST(dbl3),
BADVAL_TEST(dbl4),
BADVAL_TEST(dbl5),
BADVAL_TEST(dbl6),
BADVAL_TEST(badcsvi1),
BADVAL_TEST(badcsvi2),
BADVAL_TEST(nonoption),