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src/examples/*fileserver*.c: added error checking

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Evgeny Grin (Karlson2k)
2022-06-01 22:12:38 +03:00
parent 73340d1daf
commit aefa12e99a
3 changed files with 48 additions and 13 deletions
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src/examples/https_fileserver_example.c
+12 -3
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@@ -112,10 +112,19 @@ OT1qAbIblaRuWqCsid8BzP7ZQiAnAWgMRSUg1gzDwSwRhrYQRRWAyn/Qipzec+27\n\
static ssize_t
file_reader (void *cls, uint64_t pos, char *buf, size_t max)
{
FILE *file = cls;
FILE *file = (FILE *) cls;
size_t bytes_read;
(void) fseek (file, pos, SEEK_SET);
return fread (buf, 1, max, file);
/* 'fseek' may not support files larger 2GiB, depending on platform.
* For production code, make sure that 'pos' has valid values, supported by
* 'fseek', or use 'fseeko' or similar function. */
if (0 != fseek (file, (long) pos, SEEK_SET))
return MHD_CONTENT_READER_END_WITH_ERROR;
bytes_read = fread (buf, 1, max, file);
if (0 == bytes_read)
return (0 != ferror (file)) ? MHD_CONTENT_READER_END_WITH_ERROR :
MHD_CONTENT_READER_END_OF_STREAM;
return (ssize_t) bytes_read;
}