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prevent infinite recursions in echoandcheck and SyWriteandcheck #3102

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merged 1 commit into from
Jan 8, 2019
Merged

prevent infinite recursions in echoandcheck and SyWriteandcheck #3102

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33 changes: 22 additions & 11 deletions src/sysfiles.c
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Original file line number Diff line number Diff line change
Expand Up @@ -153,19 +153,24 @@ ssize_t echoandcheck(int fid, const char *buf, size_t count) {
int ret;
if (syBuf[fid].type == gzip_socket) {
ret = gzwrite(syBuf[fid].gzfp, buf, count);
if (ret < 0)
if (ret < 0) {
ErrorQuit(
"Could not write to compressed file, see 'LastSystemError();'\n",
0L, 0L);
}
}
else {
ret = write(syBuf[fid].echo, buf, count);
if (ret < 0)
ErrorQuit("Could not write to file descriptor %d, see "
"'LastSystemError();'\n",
syBuf[fid].fp, 0L);
if (ret < 0) {
if (syBuf[fid].fp == fileno(stdout) || syBuf[fid].fp == fileno(stderr)) {
Panic("Could not write to stdout/stderr.");
} else {
ErrorQuit("Could not write to file descriptor %d, see "
"'LastSystemError();'\n",
syBuf[fid].fp, 0L);
}
}
}

return ret;
}

Expand Down Expand Up @@ -1540,17 +1545,23 @@ static ssize_t SyWriteandcheck(Int fid, const void * buf, size_t count)
int ret;
if (syBuf[fid].type == gzip_socket) {
ret = gzwrite(syBuf[fid].gzfp, buf, count);
if (ret < 0)
if (ret < 0) {
ErrorQuit(
"Cannot write to compressed file, see 'LastSystemError();'\n",
0L, 0L);
}
}
else {
ret = write(syBuf[fid].fp, buf, count);
if (ret < 0)
ErrorQuit("Cannot write to file descriptor %d, see "
"'LastSystemError();'\n",
syBuf[fid].fp, 0L);
if (ret < 0) {
if (syBuf[fid].fp == fileno(stdout) || syBuf[fid].fp == fileno(stderr)) {
Panic("Could not write to stdout/stderr.");
} else {
ErrorQuit("Cannot write to file descriptor %d, see "
"'LastSystemError();'\n",
syBuf[fid].fp, 0L);
}
}
}

return ret;
Expand Down