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in_opentelemetry: handle missing or invalid content-type headers in metrics and traces handlers #8986

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Merged
edsiper merged 2 commits into from
Jun 24, 2024
Merged

in_opentelemetry: handle missing or invalid content-type headers in metrics and traces handlers #8986

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f48284e
fix: add null content-type header check to traces and metrics endpoints
portswigger-tim Jun 20, 2024
b791fc7
fix: handle unsupported content-types
portswigger-tim Jun 20, 2024
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28 changes: 26 additions & 2 deletions plugins/in_opentelemetry/opentelemetry_prot.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2175,6 +2175,12 @@ static int process_payload_metrics_ng(struct flb_opentelemetry *ctx,

offset = 0;

if (request->content_type == NULL) {
flb_error("[otel] content type missing");

return -1;
}

if (strcasecmp(request->content_type, "application/grpc") == 0) {
if (cfl_sds_len(request->body) < 5) {
return -1;
Expand All @@ -2185,12 +2191,18 @@ static int process_payload_metrics_ng(struct flb_opentelemetry *ctx,
cfl_sds_len(request->body) - 5,
&offset);
}
else {
else if (strcasecmp(request->content_type, "application/x-protobuf") == 0 ||
strcasecmp(request->content_type, "application/json") == 0) {
result = cmt_decode_opentelemetry_create(&decoded_contexts,
request->body,
cfl_sds_len(request->body),
&offset);
}
else {
flb_plg_error(ctx->ins, "Unsupported content type %s", request->content_type);

return -1;
}

if (result == CMT_DECODE_OPENTELEMETRY_SUCCESS) {
cfl_list_foreach(iterator, &decoded_contexts) {
Expand Down Expand Up @@ -2221,6 +2233,12 @@ static int process_payload_traces_proto_ng(struct flb_opentelemetry *ctx,

offset = 0;

if (request->content_type == NULL) {
flb_error("[otel] content type missing");

return -1;
}

if (strcasecmp(request->content_type, "application/grpc") == 0) {
if (cfl_sds_len(request->body) < 5) {
return -1;
Expand All @@ -2231,12 +2249,18 @@ static int process_payload_traces_proto_ng(struct flb_opentelemetry *ctx,
cfl_sds_len(request->body) - 5,
&offset);
}
else {
else if (strcasecmp(request->content_type, "application/x-protobuf") == 0 ||
strcasecmp(request->content_type, "application/json") == 0) {
result = ctr_decode_opentelemetry_create(&decoded_context,
request->body,
cfl_sds_len(request->body),
&offset);
}
else {
flb_plg_error(ctx->ins, "Unsupported content type %s", request->content_type);

return -1;
}

if (result == 0) {
result = flb_input_trace_append(ctx->ins, NULL, 0, decoded_context);
Expand Down