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Fix a few resource leaks

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Jfreegman 2016-10-05 15:17:56 -04:00
parent 15846d2b50
commit abb39ea6b5
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GPG Key ID: 3627F3144076AE63
1 changed files with 31 additions and 18 deletions
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49
src/qr_code.c
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@ -105,7 +105,7 @@ int ID_to_QRcode_txt(const char *tox_id, const char *outfile)
int ID_to_QRcode_png(const char *tox_id, const char *outfile)
{
static FILE *fp;
unsigned char *row, *p;
unsigned char *p;
unsigned char black[4] = {0, 0, 0, 255};
size_t x, y, xx, yy, real_width;
size_t margin = BORDER_LEN;
@ -116,31 +116,40 @@ int ID_to_QRcode_png(const char *tox_id, const char *outfile)
fp = fopen(outfile, "wb");
if (fp == NULL)
if (fp == NULL) {
return -1;
}
QRcode *qr_obj = QRcode_encodeString(tox_id, 0, QR_ECLEVEL_L, QR_MODE_8, 0);
if (qr_obj == NULL)
if (qr_obj == NULL) {
fclose(fp);
return -1;
}
real_width = (qr_obj->width + margin * 2) * size;
row = malloc(real_width * 4);
if (row == NULL)
return -1;
size_t row_size = real_width * 4;
unsigned char row[row_size];
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (png_ptr == NULL)
if (png_ptr == NULL) {
fclose(fp);
QRcode_free(qr_obj);
return -1;
}
info_ptr = png_create_info_struct(png_ptr);
if (info_ptr == NULL)
if (info_ptr == NULL) {
fclose(fp);
QRcode_free(qr_obj);
return -1;
}
if (setjmp(png_jmpbuf(png_ptr))) {
fclose(fp);
QRcode_free(qr_obj);
png_destroy_write_struct(&png_ptr, &info_ptr);
return -1;
}
@ -154,40 +163,44 @@ int ID_to_QRcode_png(const char *tox_id, const char *outfile)
png_write_info(png_ptr, info_ptr);
/* top margin */
memset(row, 0xff, real_width * 4);
memset(row, 0xff, row_size);
for (y = 0; y < margin * size; y++)
for (y = 0; y < margin * size; y++) {
png_write_row(png_ptr, row);
}
/* data */
p = qr_obj->data;
for (y = 0; y < qr_obj->width; y++) {
memset(row, 0xff, real_width * 4);
memset(row, 0xff, row_size);
for (x = 0; x < qr_obj->width; x++) {
for (xx = 0; xx < size; xx++)
if (*p & 1)
for (xx = 0; xx < size; xx++) {
if (*p & 1) {
memcpy(&row[((margin + x) * size + xx) * 4], black, 4);
}
}
p++;
}
for (yy = 0; yy < size; yy++)
for (yy = 0; yy < size; yy++) {
png_write_row(png_ptr, row);
}
}
/* bottom margin */
memset(row, 0xff, real_width * 4);
memset(row, 0xff, row_size);
for (y = 0; y < margin * size; y++)
for (y = 0; y < margin * size; y++) {
png_write_row(png_ptr, row);
}
png_write_end(png_ptr, info_ptr);
png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(fp);
free(row);
QRcode_free(qr_obj);
return 0;