From 976beebb5e549eebfe5ab04035163c5fdef0c133 Mon Sep 17 00:00:00 2001
From: Tomer Shalev <tshalev@proofpoint.com>
Date: Thu, 18 Nov 2021 09:27:14 +0200
Subject: [PATCH] Helper functions to print headers

---
 header.c          | 12 ++++++++++++
 include/header.h  |  2 ++
 include/request.h |  2 ++
 request.c         | 31 +++++++++++++++++++++++++++++++
 4 files changed, 47 insertions(+)

diff --git a/header.c b/header.c
index eb40a766..e9816211 100644
--- a/header.c
+++ b/header.c
@@ -707,3 +707,15 @@ int sizeofencaps(ci_encaps_entity_t * e)
     }
     return 0;
 }
+
+const char *ci_print_icap_headers(ci_headers_list_t *h)
+{
+    int i;
+    const char *header;
+
+    ci_debug_printf(1, "\n===== ICAP Headers =====\n");
+    for (i = 0; i < h->used; i++) {
+        header = h->headers[i];
+        ci_debug_printf(1, "ICAP header: %s\n", header);
+    }
+}
diff --git a/include/header.h b/include/header.h
index 1ffe8164..b1549ef8 100644
--- a/include/header.h
+++ b/include/header.h
@@ -282,6 +282,8 @@ CI_DECLARE_FUNC(const char *) ci_headers_first_line2(ci_headers_list_t *heads, s
 /*compatibility macro*/
 #define ci_headers_copy_header_bytes ci_headers_pack_to_buffer
 
+CI_DECLARE_FUNC(const char *) ci_print_icap_headers(ci_headers_list_t *heads);
+
 /*The following headers are only used internally */
 CI_DECLARE_FUNC(void) ci_headers_pack(ci_headers_list_t *heads);
 CI_DECLARE_FUNC(int)  ci_headers_unpack(ci_headers_list_t *heads);
diff --git a/include/request.h b/include/request.h
index fa57e36c..931483c4 100644
--- a/include/request.h
+++ b/include/request.h
@@ -271,6 +271,8 @@ CI_DECLARE_FUNC(void) ci_client_library_init();
 
 CI_DECLARE_FUNC(void) ci_client_library_release();
 
+CI_DECLARE_FUNC(void) ci_print_http_headers(ci_request_t *req);
+
 /** Deprecated. Use ci_connect_to declared in net_io.h instead. */
 CI_DECLARE_FUNC(ci_connection_t *)  ci_client_connect_to(char *servername,int port,int proto);
 
diff --git a/request.c b/request.c
index ab86c17f..52f311e2 100644
--- a/request.c
+++ b/request.c
@@ -1737,3 +1737,34 @@ int process_request(ci_request_t * req)
 
     return res; /*Allow to log even the failed requests*/
 }
+
+void print_http_header(void *d, const char *head, const char *value)
+{
+    if (!head || !*head) {
+        ci_debug_printf(1, "\t%s\n", value);
+    } else {
+        ci_debug_printf(1, "\t%s: %s\n", head, value);
+    }
+}
+
+void ci_print_http_headers(ci_request_t *req)
+{
+    int type;
+    ci_headers_list_t *headers;
+    ci_debug_printf(1, "\n===== Request Headers =====\n");
+    ci_debug_printf(1, "\nICAP HEADERS:\n");
+    ci_headers_iterate(req->response_header, NULL, print_http_header);
+    ci_debug_printf(1, "\n");
+
+    if ((headers = ci_http_response_headers(req)) == NULL) {
+        headers = ci_http_request_headers(req);
+        type = ICAP_REQMOD;
+    } else
+        type = ICAP_RESPMOD;
+
+    if (headers) {
+        ci_debug_printf(1, "%s HEADERS:\n", ci_method_string(type));
+        ci_headers_iterate(headers, NULL, print_http_header);
+        ci_debug_printf(1, "\n");
+    }
+}