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r3.in.v5d: Fix unchecked return value #4141

Merged
merged 10 commits into from
Sep 26, 2024
Merged

r3.in.v5d: Fix unchecked return value #4141

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d7a725d
check return value
Aug 5, 2024
cd6c8a6
Changed printf to Gfatal
Aug 5, 2024
dc56f61
Merge branch 'main' into issue_35
echoix Aug 15, 2024
66ec842
Requested changes
Sep 19, 2024
a29f388
Merge remote-tracking branch 'origin/issue_35' into issue_35
Sep 19, 2024
7461590
Requested changes
Sep 19, 2024
594894c
Update raster3d/r3.in.v5d/v5d.c
ShubhamDesai Sep 19, 2024
2f83e20
Requested G_warning changes
Sep 23, 2024
3414157
Requested G_warning changes
Sep 23, 2024
f8b3e8d
G_warning message modified
Sep 25, 2024
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63 changes: 50 additions & 13 deletions raster3d/r3.in.v5d/v5d.c
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,9 @@
#include <string.h>
#include <math.h>
#include <grass/gis.h>
#include <grass/glocale.h>
#include <errno.h>

#include "binio.h"
#include "v5d.h"
#include "vis5d.h"
Expand Down Expand Up @@ -1232,7 +1235,10 @@ static int read_comp_header(int f, v5dstruct *v)
unsigned int id;

/* reset file position to start of file */
lseek(f, 0, SEEK_SET);
if (lseek(f, 0, SEEK_SET) == -1) {
G_warning(_("Unable to seek: %s"), strerror(errno));
return 0;
}

/* read file ID */
read_int4(f, (int *)&id);
Expand Down Expand Up @@ -1334,8 +1340,8 @@ static int read_comp_header(int f, v5dstruct *v)

/* skip ahead by 'gridsize' bytes */
if (lseek(f, gridsize, SEEK_CUR) == -1) {
printf("Error: Unexpected end of file, ");
printf("file may be corrupted.\n");
G_warning(_("Error: Unexpected end of file, "));
G_warning(_("file may be corrupted.\n"));
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return 0;
}
min = -(125.0 + gb) / ga;
Expand Down Expand Up @@ -1478,7 +1484,10 @@ static int read_comp_grid(v5dstruct *v, int time, int var, float *ga, float *gb,

/* move to position in file */
pos = grid_position(v, time, var);
lseek(f, pos, SEEK_SET);
if (lseek(f, pos, SEEK_SET) == -1) {
G_warning(_("Unable to seek: %s"), strerror(errno));
return 0;
}

if (v->FileFormat == 0x80808083) {
/* read McIDAS grid and file numbers */
Expand Down Expand Up @@ -1551,7 +1560,13 @@ static int read_comp_grid(v5dstruct *v, int time, int var, float *ga, float *gb,
*/
static int read_v5d_header(v5dstruct *v)
{
#define SKIP(N) lseek(f, N, SEEK_CUR)
#define SKIP(N) \
do { \
if (lseek(f, N, SEEK_CUR) == -1) { \
G_warning(_("Unable to seek: %s"), strerror(errno)); \
return 0; \
} \
} while (0)
int end_of_header = 0;
unsigned int id;
int idlen, var, numargs;
Expand Down Expand Up @@ -1870,13 +1885,19 @@ static int read_v5d_header(v5dstruct *v)
case TAG_END:
/* end of header */
end_of_header = 1;
lseek(f, length, SEEK_CUR);
if (lseek(f, length, SEEK_CUR) == -1) {
G_warning(_("Unable to seek: %s"), strerror(errno));
return 0;
}
break;

default:
/* unknown tag, skip to next tag */
printf("Unknown tag: %d length=%d\n", tag, length);
lseek(f, length, SEEK_CUR);
if (lseek(f, length, SEEK_CUR) == -1) {
G_warning(_("Unable to seek: %s"), strerror(errno));
return 0;
}
break;
}
}
Expand Down Expand Up @@ -1966,7 +1987,10 @@ int v5dReadCompressedGrid(v5dstruct *v, int time, int var, float *ga, float *gb,

/* move to position in file */
pos = grid_position(v, time, var);
lseek(v->FileDesc, pos, SEEK_SET);
if (lseek(v->FileDesc, pos, SEEK_SET) == -1) {
G_warning(_("Unable to seek: %s"), strerror(errno));
return 0;
}

/* read ga, gb arrays */
read_float4_array(v->FileDesc, ga, v->Nl[var]);
Expand Down Expand Up @@ -2118,7 +2142,10 @@ static int write_v5d_header(v5dstruct *v)
}

/* set file pointer to start of file */
lseek(f, 0, SEEK_SET);
if (lseek(f, 0, SEEK_SET) == -1) {
G_warning(_("Unable to seek: %s"), strerror(errno));
return 0;
}
v->CurPos = 0;

/*
Expand Down Expand Up @@ -2222,7 +2249,10 @@ static int write_v5d_header(v5dstruct *v)
/* We're writing to a brand new file. Reserve 10000 bytes */
/* for future header growth. */
WRITE_TAG(v, TAG_END, 10000);
lseek(f, 10000, SEEK_CUR);
if (lseek(f, 10000, SEEK_CUR) == -1) {
G_warning(_("Unable to seek: %s"), strerror(errno));
return 0;
}

/* Let file pointer indicate where first grid is stored */
v->FirstGridPos = ltell(f);
Expand Down Expand Up @@ -2336,7 +2366,8 @@ int v5dWriteCompressedGrid(const v5dstruct *v, int time, int var,
pos = grid_position(v, time, var);
if (lseek(v->FileDesc, pos, SEEK_SET) < 0) {
/* lseek failed, return error */
printf("Error in v5dWrite[Compressed]Grid: seek failed, disk full?\n");
G_warning(
_("Error in v5dWrite[Compressed]Grid: seek failed, disk full?\n"));
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return 0;
}

Expand Down Expand Up @@ -2452,9 +2483,15 @@ int v5dCloseFile(v5dstruct *v)
if (v->Mode == 'w') {
/* rewrite header because writing grids updates the minval and */
/* maxval fields */
lseek(v->FileDesc, 0, SEEK_SET);
if (lseek(v->FileDesc, 0, SEEK_SET) == -1) {
G_warning(_("Unable to seek: %s"), strerror(errno));
return 0;
}
status = write_v5d_header(v);
lseek(v->FileDesc, 0, SEEK_END);
if (lseek(v->FileDesc, 0, SEEK_END) == -1) {
G_warning(_("Unable to seek: %s"), strerror(errno));
return 0;
}
close(v->FileDesc);
}
else if (v->Mode == 'r') {
Expand Down
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