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Avoid ignoring file read errors
This fixes a bunch of Coverity warnings. Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
parent
58fbee7150
commit
08db242e0e
2 changed files with 26 additions and 12 deletions
26
datatrak.c
26
datatrak.c
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@ -93,7 +93,8 @@ static struct sample *dtrak_profile(struct dive *dt_dive, FILE *archivo)
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struct divecomputer *dc = &dt_dive->dc;
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for (i = 1; i <= dt_dive->dc.alloc_samples; i++) {
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fread(&lector_bytes, 1, 2, archivo);
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if (fread(&lector_bytes, 1, 2, archivo) != 2)
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return sample;
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interval= 20 * (i + 1);
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sample = add_sample(sample, interval, dc);
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sample->depth.mm = (two_bytes_to_int(lector_bytes[0], lector_bytes[1]) & 0xFFC0) * 1000 / 410;
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@ -127,6 +128,7 @@ static struct sample *dtrak_profile(struct dive *dt_dive, FILE *archivo)
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sample->setpoint.mbar = calculate_depth_to_mbar(sample->depth.mm, dt_dive->surface_pressure, 0) * o2percent / 100;
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j++;
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}
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bail:
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return sample;
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}
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@ -140,7 +142,10 @@ static dtrakheader read_file_header(FILE *archivo)
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const short headerbytes = 12;
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unsigned char *lector = (unsigned char *)malloc(headerbytes);
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fread(lector, 1, headerbytes, archivo);
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if (fread(lector, 1, headerbytes, archivo) != headerbytes) {
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free(lector);
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return fileheader;
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}
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if (two_bytes_to_int(lector[0], lector[1]) != 0xA100) {
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report_error(translate("gettextFromC", "Error: the file does not appear to be a DATATRAK divelog"));
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free(lector);
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@ -154,6 +159,7 @@ static dtrakheader read_file_header(FILE *archivo)
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return fileheader;
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}
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#define CHECK(_func, _val) if ((_func) != (_val)) goto bail
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/*
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* Parses the dive extracting its data and filling a subsurface's dive structure
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@ -175,14 +181,14 @@ bool dt_dive_parser(FILE *archivo, struct dive *dt_dive)
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* Parse byte to byte till next dive entry
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*/
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n = 0;
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fread(&lector_bytes[n], 1, 1, archivo);
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CHECK(fread(&lector_bytes[n], 1, 1, archivo), 1);
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while (lector_bytes[n] != 0xA0)
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fread(&lector_bytes[n], 1, 1, archivo);
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CHECK(fread(&lector_bytes[n], 1, 1, archivo), 1);
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/*
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* Found dive header 0xA000, verify second byte
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*/
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fread(&lector_bytes[n+1], 1, 1, archivo);
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CHECK(fread(&lector_bytes[n+1], 1, 1, archivo), 1);
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if (two_bytes_to_int(lector_bytes[0], lector_bytes[1]) != 0xA000) {
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printf("Error: byte = %4x\n", two_bytes_to_int(lector_bytes[0], lector_bytes[1]));
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return false;
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@ -589,8 +595,8 @@ bool dt_dive_parser(FILE *archivo, struct dive *dt_dive)
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* comsumption based on dc model - Useless for Subsurface
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*/
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read_bytes(1);
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fseek(archivo, 6, 1); // jump over 6 bytes whitout known use
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if (fseek(archivo, 6, 1) != 0) // jump over 6 bytes whitout known use
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goto bail;
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/*
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* Profile data length
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*/
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@ -601,7 +607,8 @@ bool dt_dive_parser(FILE *archivo, struct dive *dt_dive)
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* 8 x 2 bytes for the tissues saturation useless for subsurface
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* and other 6 bytes without known use
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*/
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fseek(archivo, 22, 1);
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if (fseek(archivo, 22, 1) != 0)
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goto bail;
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if (is_nitrox || is_O2) {
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/*
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@ -649,6 +656,9 @@ bool dt_dive_parser(FILE *archivo, struct dive *dt_dive)
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((dt_dive->cylinder[0].gas_used.mliter / dt_dive->cylinder[0].type.size.mliter) * 1000);
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}
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return true;
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bail:
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return false;
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}
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void datatrak_import(const char *file, struct dive_table *table)
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12
datatrak.h
12
datatrak.h
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@ -13,22 +13,26 @@ typedef struct dtrakheader_ {
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#define read_bytes(_n) \
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switch (_n) { \
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case 1: \
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fread (&lector_bytes, sizeof(char), _n, archivo); \
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if (fread (&lector_bytes, sizeof(char), _n, archivo) != _n) \
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goto bail; \
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tmp_1byte = lector_bytes[0]; \
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break; \
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case 2: \
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fread (&lector_bytes, sizeof(char), _n, archivo); \
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if (fread (&lector_bytes, sizeof(char), _n, archivo) != _n) \
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goto bail; \
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tmp_2bytes = two_bytes_to_int (lector_bytes[1], lector_bytes[0]); \
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break; \
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default: \
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fread (&lector_word, sizeof(char), _n, archivo); \
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if (fread (&lector_word, sizeof(char), _n, archivo) != _n) \
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goto bail; \
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tmp_4bytes = four_bytes_to_long(lector_word[3], lector_word[2], lector_word[1], lector_word[0]); \
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break; \
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}
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#define read_string(_property) \
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unsigned char *_property##tmp = (unsigned char *)calloc(tmp_1byte + 1, 1); \
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fread((char *)_property##tmp, 1, tmp_1byte, archivo); \
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if (fread((char *)_property##tmp, 1, tmp_1byte, archivo) != tmp_1byte) \
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goto bail; \
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_property = (unsigned char *)strcat(to_utf8(_property##tmp), ""); \
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free(_property##tmp);
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