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author | Dirk Hohndel <dirk@hohndel.org> | 2015-10-03 10:02:55 -0400 |
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committer | Dirk Hohndel <dirk@hohndel.org> | 2015-10-03 10:02:55 -0400 |
commit | 08db242e0e5855a4673e4caf9549bed78012737c (patch) | |
tree | 6b36755c630938e7913e65711ff714eae1dcd852 /datatrak.c | |
parent | 58fbee7150b021671d5dee70ee968fb1d42f8902 (diff) | |
download | subsurface-08db242e0e5855a4673e4caf9549bed78012737c.tar.gz |
Avoid ignoring file read errors
This fixes a bunch of Coverity warnings.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Diffstat (limited to 'datatrak.c')
-rw-r--r-- | datatrak.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/datatrak.c b/datatrak.c index 2e8dec808..03fa71a50 100644 --- a/datatrak.c +++ b/datatrak.c @@ -93,7 +93,8 @@ static struct sample *dtrak_profile(struct dive *dt_dive, FILE *archivo) struct divecomputer *dc = &dt_dive->dc; for (i = 1; i <= dt_dive->dc.alloc_samples; i++) { - fread(&lector_bytes, 1, 2, archivo); + if (fread(&lector_bytes, 1, 2, archivo) != 2) + return sample; interval= 20 * (i + 1); sample = add_sample(sample, interval, dc); sample->depth.mm = (two_bytes_to_int(lector_bytes[0], lector_bytes[1]) & 0xFFC0) * 1000 / 410; @@ -127,6 +128,7 @@ static struct sample *dtrak_profile(struct dive *dt_dive, FILE *archivo) sample->setpoint.mbar = calculate_depth_to_mbar(sample->depth.mm, dt_dive->surface_pressure, 0) * o2percent / 100; j++; } +bail: return sample; } @@ -140,7 +142,10 @@ static dtrakheader read_file_header(FILE *archivo) const short headerbytes = 12; unsigned char *lector = (unsigned char *)malloc(headerbytes); - fread(lector, 1, headerbytes, archivo); + if (fread(lector, 1, headerbytes, archivo) != headerbytes) { + free(lector); + return fileheader; + } if (two_bytes_to_int(lector[0], lector[1]) != 0xA100) { report_error(translate("gettextFromC", "Error: the file does not appear to be a DATATRAK divelog")); free(lector); @@ -154,6 +159,7 @@ static dtrakheader read_file_header(FILE *archivo) return fileheader; } +#define CHECK(_func, _val) if ((_func) != (_val)) goto bail /* * Parses the dive extracting its data and filling a subsurface's dive structure @@ -175,14 +181,14 @@ bool dt_dive_parser(FILE *archivo, struct dive *dt_dive) * Parse byte to byte till next dive entry */ n = 0; - fread(&lector_bytes[n], 1, 1, archivo); + CHECK(fread(&lector_bytes[n], 1, 1, archivo), 1); while (lector_bytes[n] != 0xA0) - fread(&lector_bytes[n], 1, 1, archivo); + CHECK(fread(&lector_bytes[n], 1, 1, archivo), 1); /* * Found dive header 0xA000, verify second byte */ - fread(&lector_bytes[n+1], 1, 1, archivo); + CHECK(fread(&lector_bytes[n+1], 1, 1, archivo), 1); if (two_bytes_to_int(lector_bytes[0], lector_bytes[1]) != 0xA000) { printf("Error: byte = %4x\n", two_bytes_to_int(lector_bytes[0], lector_bytes[1])); return false; @@ -589,8 +595,8 @@ bool dt_dive_parser(FILE *archivo, struct dive *dt_dive) * comsumption based on dc model - Useless for Subsurface */ read_bytes(1); - fseek(archivo, 6, 1); // jump over 6 bytes whitout known use - + if (fseek(archivo, 6, 1) != 0) // jump over 6 bytes whitout known use + goto bail; /* * Profile data length */ @@ -601,7 +607,8 @@ bool dt_dive_parser(FILE *archivo, struct dive *dt_dive) * 8 x 2 bytes for the tissues saturation useless for subsurface * and other 6 bytes without known use */ - fseek(archivo, 22, 1); + if (fseek(archivo, 22, 1) != 0) + goto bail; if (is_nitrox || is_O2) { /* @@ -649,6 +656,9 @@ bool dt_dive_parser(FILE *archivo, struct dive *dt_dive) ((dt_dive->cylinder[0].gas_used.mliter / dt_dive->cylinder[0].type.size.mliter) * 1000); } return true; + +bail: + return false; } void datatrak_import(const char *file, struct dive_table *table) |