Mercurial > dovecot > core-2.2
annotate src/lib-mail/message-parser.h @ 4906:0c3c948412c5 HEAD
Type safe callbacks weren't as easy as I thought. Only callback(void
*context) can be handled generically. Others can be handled specially, but
only if all the parameters are pointers, otherwise eg. int parameter can be
replaced with long without compiler giving any warnings.
author | Timo Sirainen <tss@iki.fi> |
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date | Fri, 15 Dec 2006 20:10:51 +0200 |
parents | 204d7edc7cdc |
children | 6cd889c652b0 |
rev | line source |
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0 | 1 #ifndef __MESSAGE_PARSER_H |
2 #define __MESSAGE_PARSER_H | |
3 | |
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4 #include "message-header-parser.h" |
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5 #include "message-size.h" |
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6 |
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7 /* Note that these flags are used directly by message-parser-serialize, so |
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8 existing flags can't be changed without breaking backwards compatibility */ |
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9 enum message_part_flags { |
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10 MESSAGE_PART_FLAG_MULTIPART = 0x01, |
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11 MESSAGE_PART_FLAG_MULTIPART_DIGEST = 0x02, |
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12 MESSAGE_PART_FLAG_MESSAGE_RFC822 = 0x04, |
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13 |
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14 /* content-type: text/... */ |
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15 MESSAGE_PART_FLAG_TEXT = 0x08, |
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16 |
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17 MESSAGE_PART_FLAG_UNUSED = 0x10, |
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18 |
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19 /* message part header or body contains NULs */ |
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20 MESSAGE_PART_FLAG_HAS_NULS = 0x20, |
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21 |
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22 /* Mime-Version header exists. */ |
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23 MESSAGE_PART_FLAG_IS_MIME = 0x40 |
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24 }; |
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25 |
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26 struct message_part { |
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27 struct message_part *parent; |
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28 struct message_part *next; |
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29 struct message_part *children; |
0 | 30 |
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31 uoff_t physical_pos; /* absolute position from beginning of message */ |
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32 struct message_size header_size; |
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33 struct message_size body_size; |
0 | 34 |
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35 enum message_part_flags flags; |
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36 void *context; |
0 | 37 }; |
38 | |
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39 struct message_parser_ctx; |
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40 |
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41 struct message_block { |
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42 /* Message part this block belongs to */ |
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43 struct message_part *part; |
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44 |
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45 /* non-NULL if a header line was read */ |
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46 struct message_header_line *hdr; |
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47 |
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48 /* hdr = NULL, size = 0 block returned at the end of headers */ |
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49 const unsigned char *data; |
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50 size_t size; |
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51 }; |
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52 |
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53 /* called once with hdr = NULL at the end of headers */ |
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54 typedef void message_part_header_callback_t(struct message_part *part, |
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55 struct message_header_line *hdr, |
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56 void *context); |
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57 |
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58 extern message_part_header_callback_t *null_message_part_header_callback; |
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59 |
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60 /* Initialize message parser. part_spool specifies where struct message_parts |
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61 are allocated from. */ |
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62 struct message_parser_ctx * |
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63 message_parser_init(pool_t part_pool, struct istream *input); |
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64 struct message_part *message_parser_deinit(struct message_parser_ctx **ctx); |
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65 |
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66 /* Read the next block of a message. Returns 1 if block is returned, 0 if |
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67 input stream is non-blocking and more data needs to be read, -1 when all is |
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68 done or error occurred (see stream's error status). */ |
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69 int message_parser_parse_next_block(struct message_parser_ctx *ctx, |
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70 struct message_block *block_r); |
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71 |
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72 /* Read and parse header. */ |
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73 void message_parser_parse_header(struct message_parser_ctx *ctx, |
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74 struct message_size *hdr_size, |
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75 message_part_header_callback_t *callback, |
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76 void *context); |
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77 #ifdef CONTEXT_TYPE_SAFETY |
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78 # define message_parser_parse_header(ctx, hdr_size, callback, context) \ |
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79 ({(void)(1 ? 0 : callback((struct message_part *)0, \ |
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80 (struct message_header_line *)0, context)); \ |
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81 message_parser_parse_header(ctx, hdr_size, \ |
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82 (message_part_header_callback_t *)callback, context); }) |
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83 #else |
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84 # define message_parser_parse_header(ctx, hdr_size, callback, context) \ |
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85 message_parser_parse_header(ctx, hdr_size, \ |
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86 (message_part_header_callback_t *)callback, context) |
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87 #endif |
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88 |
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89 /* Read and parse body. If message is a MIME multipart or message/rfc822 |
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90 message, hdr_callback is called for all headers. body_callback is called |
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91 for the body content. */ |
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92 void message_parser_parse_body(struct message_parser_ctx *ctx, |
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93 message_part_header_callback_t *hdr_callback, |
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94 void *context); |
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95 #ifdef CONTEXT_TYPE_SAFETY |
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96 # define message_parser_parse_body(ctx, callback, context) \ |
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97 ({(void)(1 ? 0 : callback((struct message_part *)0, \ |
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98 (struct message_header_line *)0, context)); \ |
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99 message_parser_parse_body(ctx, \ |
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100 (message_part_header_callback_t *)callback, context); }) |
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101 #else |
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102 # define message_parser_parse_body(ctx, callback, context) \ |
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103 message_parser_parse_body(ctx, \ |
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104 (message_part_header_callback_t *)callback, context) |
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105 #endif |
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106 |
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107 /* callback is called for each field in message header. */ |
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108 void message_parse_from_parts(struct message_part *part, struct istream *input, |
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109 message_part_header_callback_t *callback, |
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110 void *context); |
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111 #ifdef CONTEXT_TYPE_SAFETY |
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112 # define message_parse_from_parts(part, input, callback, context) \ |
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113 ({(void)(1 ? 0 : callback((struct message_part *)0, \ |
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114 (struct message_header_line *)0, context)); \ |
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115 message_parse_from_parts(part, input, \ |
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116 (message_part_header_callback_t *)callback, context); }) |
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117 #else |
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118 # define message_parse_from_parts(part, input, callback, context) \ |
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119 message_parse_from_parts(part, input, \ |
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120 (message_part_header_callback_t *)callback, context) |
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121 #endif |
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Better handling for multiline headers. Before we skipped headers larger than
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122 |
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Some fixes and added message_parser_set_crlfs().
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123 /* Update the physical_size of all parts. If use_crlf is TRUE, they're set |
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Some fixes and added message_parser_set_crlfs().
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124 to same as virtual_size. If use_crlf is FALSE, they're set to |
bd99e8f5e3ac
Some fixes and added message_parser_set_crlfs().
Timo Sirainen <timo.sirainen@movial.fi>
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125 virtual_size - lines. physical_pos fields are also updated. */ |
bd99e8f5e3ac
Some fixes and added message_parser_set_crlfs().
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126 void message_parser_set_crlfs(struct message_part *parts, bool use_crlf); |
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Some fixes and added message_parser_set_crlfs().
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127 |
0 | 128 #endif |