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fix: wait for socket transmissions to finish

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This commit is contained in:
kevinj 2024-08-08 13:25:23 +02:00
parent 40daff5c44
commit 9002b5688c
2 changed files with 48 additions and 28 deletions
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61
proxy.c
View File

@ -162,8 +162,13 @@ void do_err(void) {
int do_fwd_clt(void) {
int bytes = 0;
int ret = 0;
do {
bytes += send(clt_sock, srv_msg+bytes, srv_msg_len-bytes, 0);
ret = send(clt_sock, srv_msg+bytes, srv_msg_len-bytes, 0);
if (ret < 0)
return -1;
bytes += ret;
} while (bytes < srv_msg_len);
return 0;
@ -176,20 +181,28 @@ int do_prs_srv(void) {
}
int do_rcv_srv(void) {
int ret = recv(srv_sock, srv_msg, PROXY_MAX_MSGLEN, 0);
if (ret < 0)
return -1;
int bytes = 0;
int ret = 0;
do {
ret = recv(srv_sock, srv_msg+bytes, PROXY_MAX_MSGLEN-bytes, 0);
if (ret < 0)
return -1;
if (!ret)
break;
srv_msg_len = ret;
bytes += ret;
} while (bytes < sizeof(PROXY_MAX_MSGLEN));
srv_msg_len = bytes;
if (debug) {
fprintf(stdout, "[%d] Received server message: %s\n", statem, clt_msg);
fprintf(stdout, "[%d] Received server message: %s\n", statem, srv_msg);
}
return 0;
}
int con_srv(void) {
int do_con_srv(void) {
int ret;
char *host = getheader("Host");
if (!host)
@ -218,16 +231,14 @@ int con_srv(void) {
}
int do_fwd_srv(void) {
int ret = 0;
if (srv_sock < 0)
ret = con_srv();
if (ret < 0)
return -1;
int bytes = 0;
int ret = 0;
do {
bytes += send(srv_sock, clt_msg+bytes, clt_msg_len-bytes, 0);
ret = send(srv_sock, clt_msg+bytes, clt_msg_len-bytes, 0);
if (ret < 0)
return -1;
bytes += ret;
} while (bytes < clt_msg_len);
return 0;
@ -255,12 +266,19 @@ int do_prs_clt(void) {
}
int do_rcv_clt(void) {
int ret;
ret = recv(clt_sock, clt_msg, PROXY_MAX_MSGLEN, 0);
if (ret < 0)
return -1;
int bytes = 0;
int ret = 0;
do {
ret = recv(clt_sock, clt_msg+bytes, PROXY_MAX_MSGLEN-bytes, 0);
if (ret < 0)
return -1;
if (!ret)
break;
clt_msg_len = ret;
bytes += ret;
} while (bytes < sizeof(PROXY_MAX_MSGLEN));
clt_msg_len = bytes;
if (debug) {
fprintf(stdout, "[%d] Received client message: %s\n", statem, clt_msg);
@ -309,6 +327,9 @@ void dostatem() {
case STATEM_PRS_CLT:
ret = do_prs_clt();
break;
case STATEM_CON_SRV:
ret = do_con_srv();
break;
case STATEM_FWD_SRV:
ret = do_fwd_srv();
break;

15
structs.h
View File

@ -15,17 +15,16 @@
"[ ]+([a-zA-Z0-9_.,/-]+)[\n\r]*$"
#define REGEX_HEADER "^([a-zA-Z0-9_-]*):[ \t]+([^\r\n]*)"
#define CLIENT_MESSAGE "GET http://google.com/auth HTTP/1.0\n"\
"\n"\
"Host: google.com\n"\
"Authorization: Bearer ffja2439gjawgjgojserg\n"
#define CLIENT_MESSAGE "GET http://archive.0xdeadbeer.org/ HTTP/1.0\r\n\r\n"\
"Host: archive.0xdeadbeer.org\r\n"\
#define STATEM_RCV_CLT 0b00000001
#define STATEM_PRS_CLT 0b00000010
#define STATEM_FWD_SRV 0b00000100
#define STATEM_RCV_SRV 0b00001000
#define STATEM_PRS_SRV 0b00010000
#define STATEM_FWD_CLT 0b00100000
#define STATEM_CON_SRV 0b00000100
#define STATEM_FWD_SRV 0b00001000
#define STATEM_RCV_SRV 0b00010000
#define STATEM_PRS_SRV 0b00100000
#define STATEM_FWD_CLT 0b01000000
#define STATEM_ERR 0b10000000
struct header {