/* $Cambridge: exim/src/src/demime.h,v 1.3 2005/02/17 11:58:26 ph10 Exp $ */ /************************************************* * Exim - an Internet mail transport agent * *************************************************/ /* Copyright (c) Tom Kistner 2003-???? */ /* License: GPL */ /* demime defines */ #ifdef WITH_OLD_DEMIME #define MIME_DEMUX_MODE_SCANNING 0 #define MIME_DEMUX_MODE_MIME_HEADERS 1 #define MIME_DEMUX_MODE_BASE64 2 #define MIME_DEMUX_MODE_QP 3 #define MIME_DEMUX_MODE_PLAIN 4 #define MIME_UU_MODE_OFF 0 #define MIME_UU_MODE_UNCONFIRMED 1 #define MIME_UU_MODE_CONFIRMED 2 #define MIME_MAX_EXTENSION 128 #define MIME_READ_LINE_EOF 0 #define MIME_READ_LINE_OK 1 #define MIME_READ_LINE_OVERFLOW 2 #define MIME_SANITY_MAX_LINE_LENGTH 131071 #define MIME_SANITY_MAX_FILENAME 512 #define MIME_SANITY_MAX_HEADER_OPTION_VALUE 1024 #define MIME_SANITY_MAX_B64_LINE_LENGTH 76 #define MIME_SANITY_MAX_BOUNDARY_LENGTH 1024 #define MIME_SANITY_MAX_DUMP_FILES 1024 /* MIME errorlevel settings */ #define MIME_ERRORLEVEL_LONG_LINE 3,US"line length in message or single header size exceeds %u bytes",MIME_SANITY_MAX_LINE_LENGTH #define MIME_ERRORLEVEL_TOO_MANY_PARTS 3,US"too many MIME parts (max %u)",MIME_SANITY_MAX_DUMP_FILES #define MIME_ERRORLEVEL_MESSAGE_PARTIAL 3,US"'message/partial' MIME type" #define MIME_ERRORLEVEL_FILENAME_LENGTH 3,US"proposed filename exceeds %u characters",MIME_SANITY_MAX_FILENAME #define MIME_ERRORLEVEL_BOUNDARY_LENGTH 3,US"boundary length exceeds %u characters",MIME_SANITY_MAX_BOUNDARY_LENGTH #define MIME_ERRORLEVEL_DOUBLE_HEADERS 2,US"double headers (content-type, content-disposition or content-transfer-encoding)" #define MIME_ERRORLEVEL_UU_MISALIGNED 1,US"uuencoded line length is not a multiple of 4 characters" #define MIME_ERRORLEVEL_UU_LINE_LENGTH 1,US"uuencoded line length does not match advertised number of bytes" #define MIME_ERRORLEVEL_B64_LINE_LENGTH 1,US"base64 line length exceeds %u characters",MIME_SANITY_MAX_B64_LINE_LENGTH #define MIME_ERRORLEVEL_B64_ILLEGAL_CHAR 2,US"base64 line contains illegal character" #define MIME_ERRORLEVEL_B64_MISALIGNED 1,US"base64 line length is not a multiple of 4 characters" #define MIME_ERRORLEVEL_QP_ILLEGAL_CHAR 1,US"quoted-printable encoding contains illegal character" /* demime structures */ typedef struct mime_part { /* true if there was a content-type header */ int seen_content_type; /* true if there was a content-transfer-encoding header contains the encoding type */ int seen_content_transfer_encoding; /* true if there was a content-disposition header */ int seen_content_disposition; /* pointer to a buffer with the proposed file extension */ uschar *extension; } mime_part; typedef struct boundary { struct boundary *next; uschar *boundary_string; } boundary; typedef struct file_extension { struct file_extension *next; uschar *file_extension_string; } file_extension; /* demime.c prototypes */ unsigned int mime_hstr_i(uschar *); uschar *mime_decode_qp(uschar *, int *); int mime_get_dump_file(uschar *, FILE **, uschar *); int mime_header_find(uschar *, uschar *, uschar **); int mime_read_line(FILE *, int, uschar *, long *); int mime_check_boundary(uschar *, struct boundary *); int mime_check_uu_start(uschar *, uschar *, int *); long uu_decode_line(uschar *, uschar **, long, uschar *); long mime_decode_line(int ,uschar *, uschar **, long, uschar *); void mime_trigger_error(int, uschar *, ...); int mime_demux(FILE *, uschar *); /* BASE64 decoder matrix */ static unsigned char b64[256]={ /* 0 */ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, /* 16 */ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, /* 32 */ 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 62, 128, 128, 128, 63, /* 48 */ 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 128, 128, 128, 255, 128, 128, /* 64 */ 128, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 80 */ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 128, 128, 128, 128, 128, /* 96 */ 128, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }; /* Microsoft-Style uudecode matrix */ static unsigned char uudec[256]={ /* 0 */ 0, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, /* 16 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, /* 32 */ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 48 */ 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, /* 64 */ 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, /* 80 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, /* 96 */ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 112 */ 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, /* 128 */ 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, /* 144 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, /* 160 */ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 176 */ 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, /* 192 */ 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, /* 208 */ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, /* 224 */ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 240 */ 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 }; #endif