From: Laurent Mazet <laurent.mazet@thalesgroup.com>
Date: Tue, 30 May 2023 16:34:06 +0000 (+0200)
Subject: manage content-encoding header
X-Git-Url: https://secure.softndesign.org/git/?a=commitdiff_plain;h=7fc5f3c63a753acd7d4c9ee3f881d2113075141f;p=webserver.git

manage content-encoding header
---

diff --git a/http.c b/http.c
index fbd18ef..044ab36 100644
--- a/http.c
+++ b/http.c
@@ -41,10 +41,14 @@ typedef enum {
     not_supported_e = 0, get_e, head_e, post_e
 } method_t;
 
+typedef enum {
+    encoding_plain_e = 0, encoding_gzip_e, encoding_compress_e
+} encoding_t;
+
 typedef struct {
     char *allow;
     char *authorization;
-    char *content_encoding;
+    encoding_t content_encoding;
     char *content_length;
     char *content_type;
     char *date;
@@ -112,7 +116,14 @@ void print_header_values (header_t *header)
     printf ("Header values\n");
     if (header->allow) printf ("allow = '%s'\n", header->allow);
     if (header->authorization) printf ("authorization = '%s'\n", header->authorization);
-    if (header->content_encoding) printf ("content_encoding = '%s'\n", header->content_encoding);
+    if (header->content_encoding) {
+        printf ("content_encoding = ");
+        switch (header->content_encoding) {
+        case encoding_plain_e: printf ("plain\n"); break;
+        case encoding_gzip_e: printf ("gzip\n"); break;
+        case encoding_compress_e: printf ("compress\n"); break;
+        }
+    }
     if (header->content_length) printf ("content_length = '%s'\n", header->content_length);
     if (header->content_type) printf ("content_type = '%s'\n", header->content_type);
     if (header->date) printf ("date = '%s'\n", header->date);
@@ -355,8 +366,15 @@ int processing (char *data, int len, conf_t *conf, char **pdata)
         VERBOSE (DEBUG, PRINT ("Analyse field\n"));
         if (strcmp (field, "Allow") == 0) { header.allow = value; }
         else if (strcmp (field, "Authorization") == 0) { header.authorization = value; }
-        else if (strcmp (field, "Content-Encoding") == 0) { header.content_encoding = value; }
-        else if (strcmp (field, "Content-Length") == 0) { header.content_length = value; }
+        else if (strcmp (field, "Content-Encoding") == 0) {
+            if (strcmp (value, "x-gzip") == 0) {
+                header.content_encoding = encoding_gzip_e;
+            } else if (strcmp (value, "x-compress") == 0) {
+                header.content_encoding = encoding_compress_e;
+            } else {
+                VERBOSE (WARNING, PRINT ("Unknown content encoding: %s\n", value));
+            }
+        } else if (strcmp (field, "Content-Length") == 0) { header.content_length = value; }
         else if (strcmp (field, "Content-Type") == 0) { header.content_type = value; }
         else if (strcmp (field, "Date") == 0) { header.date = value; }
         else if (strcmp (field, "Expires") == 0) { header.expires = value; }
@@ -379,6 +397,13 @@ int processing (char *data, int len, conf_t *conf, char **pdata)
     if (len != (header.content_length ? atoi (header.content_length) : 0)) {
         VERBOSE (WARNING, PRINT ("Incoherent size (%d <> %s)\n", len, header.content_length));
     }
+    if (len > 0) {
+        switch (header.content_encoding) {
+        case encoding_plain_e: break;
+        case encoding_gzip_e: VERBOSE (WARNING, PRINT ("Gzip encoding not supported yet\n")); break;
+        case encoding_compress_e: VERBOSE (WARNING, PRINT ("Compress encoding not supported yet\n")); break;
+        }
+    }
 
     /* response */
     char *buffer = NULL;