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WIP algo

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This commit is contained in:
Quentin 2019-08-09 18:09:15 +02:00
parent a603a5762c
commit 577408a050
1 changed files with 41 additions and 20 deletions
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61
src/algo_dup2.c
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@ -1,5 +1,6 @@
#include "proxy.h" #include "proxy.h"
#include "algo_utils.h" #include "algo_utils.h"
#include "packet.h"
struct dup2_ctx { struct dup2_ctx {
uint16_t recv_id; uint16_t recv_id;
@ -19,30 +20,50 @@ int algo_dup2_on_stream(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo
char url[256]; char url[256];
struct evt_core_fdinfo *to_fdinfo = NULL; struct evt_core_fdinfo *to_fdinfo = NULL;
struct algo_ctx* app_ctx = fdinfo->cat->app_ctx; struct algo_ctx* app_ctx = fdinfo->cat->app_ctx;
union abstract_packet* ap = (union abstract_packet*) &bp->ip; union abstract_packet *ap = (union abstract_packet*) &bp->ip, *ap_prev = NULL;
// Check that we didn't already received the packet
struct dup2_ctx* dup2c = app_ctx->misc; struct dup2_ctx* dup2c = app_ctx->misc;
if (ring_ge(dup2c->recv_id, ap->fmt.content.clear.id)) { uint16_t id = 0;
switch (ap->fmt.headers.cmd) {
case CMD_UDP_METADATA_THUNDER:
id = ap->fmt.content.udp_metadata_thunder.id;
mv_buffer_rtof(&app_ctx->br, fdinfo); mv_buffer_rtof(&app_ctx->br, fdinfo);
return 0;
// Check that received identifier has not been delivered
if (ring_ge(dup2c->recv_id, id)) {
mv_buffer_atof(&app_ctx->br, fdinfo);
return 0;
}
// Update delivered identifier
dup2c->recv_id = id;
// 1. Find destination
ap_prev = (union abstract_packet*) get_app_buffer(&app_ctx->br, fdinfo)->ip;
sprintf(url, "udp:write:127.0.0.1:%d", ap_prev->fmt.content.udp_encapsulated.port);
to_fdinfo = evt_core_get_from_url (ctx, url);
if (to_fdinfo == NULL) {
fprintf(stderr, "No fd for URL %s in tcp-read. Dropping packet :( \n", url);
mv_buffer_atof (&app_ctx->br, fdinfo);
return 1;
}
// 2. Move buffer
mv_buffer_atow (&app_ctx->br, fdinfo, to_fdinfo);
main_on_udp_write(ctx, to_fdinfo);
break;
case CMD_UDP_ENCAPSULATED:
mv_buffer_rtoa(&app_ctx->br, fdinfo, fdinfo);
break;
default:
fprintf(stderr, "Unknown packet type\n");
break;
} }
dup2c->recv_id = bp->ip.ap.fmt.content.clear.id; return 1;
// 1. Find destination
sprintf(url, "udp:write:127.0.0.1:%d", bp->ip.ap.fmt.content.clear.port);
to_fdinfo = evt_core_get_from_url (ctx, url);
if (to_fdinfo == NULL) {
fprintf(stderr, "No fd for URL %s in tcp-read. Dropping packet :( \n", url);
mv_buffer_wtof (&app_ctx->br, fdinfo);
return 1;
}
// 2. Move buffer
mv_buffer_rtow (&app_ctx->br, fdinfo, to_fdinfo);
main_on_udp_write(ctx, to_fdinfo);
return 0;
} }
int algo_dup2_on_datagram(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo, struct buffer_packet* bp) { int algo_dup2_on_datagram(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo, struct buffer_packet* bp) {