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| author | Even Rouault <even.rouault@spatialys.com> | 2019-05-05 20:28:59 +0200 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2019-05-05 20:28:59 +0200 |
| commit | 96af6dbf69dd38421916438702be80f73276d879 (patch) | |
| tree | d5a653a6a306ad4c7fc7bc1586c20fac6d48f627 /src/projections/nsper.cpp | |
| parent | c5346c7c25ca9fe281df39eaeefebc1aa4009266 (diff) | |
| download | PROJ-96af6dbf69dd38421916438702be80f73276d879.tar.gz PROJ-96af6dbf69dd38421916438702be80f73276d879.zip | |
geos: avoid division by zero
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14602
Credit to OSS Fuzz
Diffstat (limited to 'src/projections/nsper.cpp')
| -rw-r--r-- | src/projections/nsper.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/projections/nsper.cpp b/src/projections/nsper.cpp index fbf5317b..d641e1b6 100644 --- a/src/projections/nsper.cpp +++ b/src/projections/nsper.cpp @@ -148,8 +148,7 @@ static PJ_LP nsper_s_inverse (PJ_XY xy, PJ *P) { /* Spheroidal, invers static PJ *setup(PJ *P) { struct pj_opaque *Q = static_cast<struct pj_opaque*>(P->opaque); - if ((Q->height = pj_param(P->ctx, P->params, "dh").f) <= 0.) - return pj_default_destructor(P, PJD_ERR_H_LESS_THAN_ZERO); + Q->height = pj_param(P->ctx, P->params, "dh").f; if (fabs(fabs(P->phi0) - M_HALFPI) < EPS10) Q->mode = P->phi0 < 0. ? S_POLE : N_POLE; @@ -161,6 +160,8 @@ static PJ *setup(PJ *P) { Q->cosph0 = cos(P->phi0); } Q->pn1 = Q->height / P->a; /* normalize by radius */ + if ( Q->pn1 <= 0 || Q->pn1 > 1e10 ) + return pj_default_destructor (P, PJD_ERR_INVALID_H); Q->p = 1. + Q->pn1; Q->rp = 1. / Q->p; Q->h = 1. / Q->pn1; |