Add basic headers handling and body encoding

src/fmail.c

@@ -24,6 +24,7 @@
 #include <stdlib.h>
 #include <getopt.h>
 #include <ctype.h>
+#include <time.h>
 
 
 /* Help and informations about the program. */
@@ -96,7 +97,7 @@ qp_encode_stream(FILE *in, FILE *out)
             fprintf(out, "=%02X", c);
             n += 3;
         }
-        else if ( isprintc(c) ) {
+        else if ( isprint(c) ) {
             fputc(c, out);
             n += 1;
         }
@@ -111,6 +112,37 @@ qp_encode_stream(FILE *in, FILE *out)
     }
 }
 
+static void
+print_date_header(FILE *out)
+{
+    time_t timestamp;
+    struct tm *timestruct;
+    char buffer[32];
+    const char *rfc2822_format = "%a, %d %b %Y %H:%M:%S %z";
+
+    timestamp = time(NULL);
+    timestruct = localtime(&timestamp);
+    strftime(buffer, sizeof(buffer), rfc2822_format, timestruct);
+
+    fprintf(out, "Date: %s\r\n", buffer);
+}
+
+static void
+process_given_headers(FILE *in, FILE *out)
+{
+    char *buffer = NULL;
+    size_t len;
+    ssize_t n;
+
+    while ( (n = getline(&buffer, &len, in)) > 1 ) {
+        fwrite(buffer, 1, n - 1, out);
+        fprintf(out, "\r\n");
+    }
+
+    if ( buffer )
+        free(buffer);
+}
+
 
 
 /* Main function. */
@@ -145,5 +177,10 @@ main(int argc, char *argv[])
         }
     }
 
+    print_date_header(stdout);
+    process_given_headers(stdin, stdout);
+    fprintf(stdout, "\r\n");
+    qp_encode_stream(stdin, stdout);
+
     return EXIT_SUCCESS;
 }