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select: make Curl_socket_check take timediff_t timeout

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Coverity found CID 1461718:

Integer handling issues (CONSTANT_EXPRESSION_RESULT) "timeout_ms >
9223372036854775807L" is always false regardless of the values of its
operands. This occurs as the logical second operand of "||".

Closes #5240
This commit is contained in:
Daniel Stenberg 2020-04-15 10:27:20 +02:00
parent b1b9692614
commit a96c7529eb
No known key found for this signature in database
GPG Key ID: 5CC908FDB71E12C2
5 changed files with 11 additions and 11 deletions
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6
lib/gopher.c
View File

@ -147,8 +147,8 @@ static CURLcode gopher_do(struct connectdata *conn, bool *done)
result = CURLE_OPERATION_TIMEDOUT;
break;
}
if(!timeout_ms || timeout_ms > TIME_T_MAX)
timeout_ms = TIME_T_MAX;
if(!timeout_ms)
timeout_ms = TIMEDIFF_T_MAX;
/* Don't busyloop. The entire loop thing is a work-around as it causes a
BLOCKING behavior which is a NO-NO. This function should rather be
@ -156,7 +156,7 @@ static CURLcode gopher_do(struct connectdata *conn, bool *done)
possible to send now will be sent in the doing function repeatedly
until the entire request is sent.
*/
what = SOCKET_WRITABLE(sockfd, (time_t)timeout_ms);
what = SOCKET_WRITABLE(sockfd, timeout_ms);
if(what < 0) {
result = CURLE_SEND_ERROR;
break;

4
lib/select.c
View File

@ -201,7 +201,7 @@ int Curl_select(curl_socket_t maxfd,
int Curl_socket_check(curl_socket_t readfd0, /* two sockets to read from */
curl_socket_t readfd1,
curl_socket_t writefd, /* socket to write to */
time_t timeout_ms) /* milliseconds to wait */
timediff_t timeout_ms) /* milliseconds to wait */
{
#ifdef HAVE_POLL_FINE
struct pollfd pfd[3];
@ -333,7 +333,7 @@ int Curl_socket_check(curl_socket_t readfd0, /* two sockets to read from */
curl_socket_t is unsigned in such cases and thus -1 is the largest
value).
*/
r = Curl_select(maxfd, &fds_read, &fds_write, &fds_err, timeout_ms);
r = Curl_select(maxfd, &fds_read, &fds_write, &fds_err, (time_t)timeout_ms);
if(r < 0)
return -1;

2
lib/select.h
View File

@ -80,7 +80,7 @@ int Curl_select(curl_socket_t maxfd,
int Curl_socket_check(curl_socket_t readfd, curl_socket_t readfd2,
curl_socket_t writefd,
time_t timeout_ms);
timediff_t timeout_ms);
#define SOCKET_READABLE(x,z) \
Curl_socket_check(x, CURL_SOCKET_BAD, CURL_SOCKET_BAD, z)
#define SOCKET_WRITABLE(x,z) \

4
lib/socks.c
View File

@ -68,9 +68,9 @@ int Curl_blockread_all(struct connectdata *conn, /* connection data */
result = CURLE_OPERATION_TIMEDOUT;
break;
}
if(!timeout_ms || timeout_ms > TIME_T_MAX)
if(!timeout_ms)
timeout_ms = TIME_T_MAX;
if(SOCKET_READABLE(sockfd, (time_t)timeout_ms) <= 0) {
if(SOCKET_READABLE(sockfd, timeout_ms) <= 0) {
result = ~CURLE_OK;
break;
}

6
lib/vtls/schannel.c
View File

@ -1645,9 +1645,9 @@ schannel_send(struct connectdata *conn, int sockindex,
written = -1;
break;
}
if(!timeout_ms || timeout_ms > TIME_T_MAX)
timeout_ms = TIME_T_MAX;
what = SOCKET_WRITABLE(conn->sock[sockindex], (time_t)timeout_ms);
if(!timeout_ms)
timeout_ms = TIMEDIFF_T_MAX;
what = SOCKET_WRITABLE(conn->sock[sockindex], timeout_ms);
if(what < 0) {
/* fatal error */
failf(conn->data, "select/poll on SSL socket, errno: %d", SOCKERRNO);