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Use new random number function to generate file IDs.

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Michael R Sweet 2021-10-09 23:10:46 -04:00
parent 953de26f6b
commit 37e80d67b1
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GPG Key ID: 999559A027815955
1 changed files with 6 additions and 11 deletions
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17
pdfio-file.c
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@ -1770,7 +1770,6 @@ write_trailer(pdfio_file_t *pdf) // I - PDF file
bool ret = true; // Return value
off_t xref_offset; // Offset to xref table
size_t i; // Looping var
int fd; // File for /dev/urandom
unsigned char id_values[2][16]; // ID array values
@ -1805,17 +1804,13 @@ write_trailer(pdfio_file_t *pdf) // I - PDF file
goto done;
}
if ((fd = open("/dev/urandom", O_RDONLY)) >= 0)
{
// Load ID array with random values from /dev/urandom...
if (read(fd, id_values[0], sizeof(id_values[0])) == (ssize_t)sizeof(id_values[0]) && read(fd, id_values[1], sizeof(id_values[1])) == (ssize_t)sizeof(id_values[1]))
{
pdf->id_array = pdfioArrayCreate(pdf);
pdfioArrayAppendBinary(pdf->id_array, id_values[0], sizeof(id_values[0]));
pdfioArrayAppendBinary(pdf->id_array, id_values[1], sizeof(id_values[1]));
}
_pdfioCryptoMakeRandom(id_values[0], sizeof(id_values[0]));
_pdfioCryptoMakeRandom(id_values[1], sizeof(id_values[1]));
close(fd);
if ((pdf->id_array = pdfioArrayCreate(pdf)) != NULL)
{
pdfioArrayAppendBinary(pdf->id_array, id_values[0], sizeof(id_values[0]));
pdfioArrayAppendBinary(pdf->id_array, id_values[1], sizeof(id_values[1]));
}
if ((pdf->trailer = pdfioDictCreate(pdf)) == NULL)