src/src/mime.h

   1 /* $Cambridge: exim/src/src/mime.h,v 1.3 2005/02/17 11:58:26 ph10 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2004 */
   8 /* License: GPL */
   9
  10 #ifdef WITH_CONTENT_SCAN
  11
  12 #define MIME_MAX_HEADER_SIZE 8192
  13 #define MIME_MAX_LINE_LENGTH 32768
  14
  15 #define MBC_ATTACHMENT            0
  16 #define MBC_COVERLETTER_ONESHOT   1
  17 #define MBC_COVERLETTER_ALL       2
  18
  19 struct mime_boundary_context
  20 {
  21   struct mime_boundary_context *parent;
  22   unsigned char *boundary;
  23   int context;
  24 };
  25
  26 typedef struct mime_header {
  27   uschar *name;
  28   int    namelen;
  29   void   *value;
  30 } mime_header;
  31
  32 static mime_header mime_header_list[] = {
  33   { US"content-type:", 13, &mime_content_type },
  34   { US"content-disposition:", 20, &mime_content_disposition },
  35   { US"content-transfer-encoding:", 26, &mime_content_transfer_encoding },
  36   { US"content-id:", 11, &mime_content_id },
  37   { US"content-description:", 20 , &mime_content_description }
  38 };
  39
  40 static int mime_header_list_size = sizeof(mime_header_list)/sizeof(mime_header);
  41
  42
  43
  44 typedef struct mime_parameter {
  45   uschar *name;
  46   int    namelen;
  47   void   *value;
  48 } mime_parameter;
  49
  50 static mime_parameter mime_parameter_list[] = {
  51   { US"name=", 5, &mime_filename },
  52   { US"filename=", 9, &mime_filename },
  53   { US"charset=", 8, &mime_charset },
  54   { US"boundary=", 9, &mime_boundary }
  55 };
  56
  57 static int mime_parameter_list_size = sizeof(mime_parameter_list)/sizeof(mime_parameter);
  58
  59
  60 /* MIME Anomaly list */
  61 #define MIME_ANOMALY_BROKEN_BASE64    2, "Broken BASE64 encoding detected"
  62 #define MIME_ANOMALY_BROKEN_QP        1, "Broken Quoted-Printable encoding detected"
  63
  64
  65 /* BASE64 decoder matrix */
  66 static unsigned char mime_b64[256]={
  67 /*   0 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
  68 /*  16 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
  69 /*  32 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,   62,  128,  128,  128,   63,
  70 /*  48 */   52,   53,   54,   55,   56,   57,   58,   59,   60,   61,  128,  128,  128,  255,  128,  128,
  71 /*  64 */  128,    0,    1,    2,    3,    4,    5,    6,    7,    8,    9,   10,   11,   12,   13,   14,
  72 /*  80 */   15,   16,   17,   18,   19,   20,   21,   22,   23,   24,   25,  128,  128,  128,  128,  128,
  73 /*  96 */  128,   26,   27,   28,   29,   30,   31,   32,   33,   34,   35,   36,   37,   38,   39,   40,
  74 /* 112 */   41,   42,   43,   44,   45,   46,   47,   48,   49,   50,   51,  128,  128,  128,  128,  128,
  75 /* 128 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
  76 /* 144 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
  77 /* 160 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
  78 /* 176 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
  79 /* 192 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
  80 /* 208 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
  81 /* 224 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
  82 /* 240 */  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128,  128
  83 };
  84
  85 #endif