1 | #include <cstdlib> |
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2 | |
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3 | |
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4 | #ifdef WIN32 |
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5 | #include <winsock2.h> |
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6 | #else |
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7 | #include <arpa/inet.h> // used for validting ipv6 addresses (should be replaced w/ boost/asio.hpp for better portability) |
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8 | #endif |
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9 | |
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10 | |
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11 | // workaround to compile with cygwin |
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12 | // (AF_INET6 is not included by arpa/inet.h and we could not find the |
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13 | // correct header to include without having conflicting definitions) |
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14 | #ifdef __CYGWIN__ |
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15 | #define AF_INET6 23 |
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16 | #endif |
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17 | |
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18 | #include "gen_classes.h" |
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19 | #include "Regex.h" |
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20 | |
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21 | namespace t3devlib { namespace gen { |
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22 | |
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23 | |
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24 | // Definition of character classes used to be used in the regular expressions |
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25 | // (within []) |
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26 | #define SDPCHARS_VCHAR "\\x21-\\x7e" |
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27 | #define SDPCHARS_EMAIL_SAFE "\\x01-\\x09\\x0b\\x0c\\x0e-\\x27\\x2a-\\x3b\\x3d\\x3f-\\xff" |
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28 | #define SDPCHARS_ATEXT "a-zA-Z0-9!#$%&'*+-/=?^_`{|}~" |
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29 | #define SDPCHARS_BYTE_STRING "\\x01-\\x09\\x0b\\x0c\\x0e-\\xff" |
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30 | |
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31 | |
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32 | // Definition of common regular expression reused many times within the |
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33 | // decoder |
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34 | // |
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35 | // Note: these definitions shall not contain any group match '(' ')' to avoid |
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36 | // side effect (the index of the subsequent group match would be shifted) |
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37 | // -> all parenthesis group needed should be implemented with '(?:' ')' so |
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38 | // that they are not indexed |
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39 | #define SDPREG_SP " " |
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40 | #define SDPREG_NON_WS_STRING "[" SDPCHARS_VCHAR "\\x80-\\xff]+" |
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41 | #define SDPREG_TOKEN "[\\x21\\x23-\\x27\\x2a\\x2b\\x2d\\x2e\\x30-\\x39\\x41-\\x5a\\x5e-\\x7e]+" |
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42 | #define SDPREG_DECIMAL_UCHAR "(?:[0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(?![0-9])" |
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43 | #define SDPREG_IP4_ADDRESS SDPREG_DECIMAL_UCHAR "(?:[.]" SDPREG_DECIMAL_UCHAR"){3}" |
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44 | #define SDPREG_INTEGER "[1-9][0-9]*" |
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45 | #define SDPREG_TIME_INTEGER "[0-9][0-9]*" |
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46 | #define SDPREG_BYTE_STRING "["SDPCHARS_BYTE_STRING"]+" |
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47 | |
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48 | // TODO: support the folding whitespaces/obsolete addresses/... ? |
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49 | #define SDPREG_ADDR_SPEC "[" SDPCHARS_ATEXT "][." SDPCHARS_ATEXT "]*@[" SDPCHARS_ATEXT "][." SDPCHARS_ATEXT "]*" |
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50 | |
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51 | // This regex differs from the BNF to avoid matching a space or dash at the |
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52 | // end of the number |
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53 | #define SDPREG_PHONE "[+]?[0-9](?:[- 0-9]*[0-9])?" |
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54 | |
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55 | |
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56 | inline bool logical_xor (bool a, bool b) |
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57 | { |
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58 | return (a && !b) || (!a && b); |
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59 | } |
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60 | |
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61 | |
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62 | |
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63 | // |
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64 | // Implementation of the decoder for SDP |
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65 | // |
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66 | |
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67 | |
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68 | void SDP_Message::PreDecode (Buffer& buffer) throw (DecodeError) |
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69 | { |
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70 | Get_protocol_version().SetFormat(Integer::AsciiDecimal); |
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71 | } |
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72 | |
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73 | |
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74 | void pre_decode_optional_field_multiple_times (RecordOfSetOf& value, int id, Buffer& buffer, const char* field_letter, void (*hyp_size_func)(int), void (*hyp_field_length_func)(int) ) |
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75 | { |
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76 | static Regex reg_field ("((?:\r\n)?)(([a-z])=)([^\\r\\n\\x00]*)"); |
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77 | if (!reg_field.Match (buffer)) |
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78 | goto finished; |
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79 | |
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80 | if (logical_xor (id, reg_field.GetMatchedLength (1))) |
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81 | // the first line MUST NOT be preceeded by CRLF |
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82 | // the next lines MUST be preceeded by CRLF |
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83 | // -> otherwise we assume this is the last field |
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84 | goto finished; |
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85 | |
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86 | if (reg_field.GetMatchedString (3) != field_letter) { |
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87 | assert (id > 0);// the field letter is already checked in |
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88 | // SDP_Message::PreDecodeField |
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89 | // the assertion is useful to ensure |
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90 | // that we cannot have an empty |
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91 | // record of (in that case the field |
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92 | // must be omitted in SDP_Message) |
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93 | goto finished; |
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94 | } |
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95 | |
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96 | (*hyp_field_length_func) (reg_field.GetMatchedLength(4)); |
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97 | reg_field.MovePast (buffer, 2); |
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98 | return; |
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99 | |
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100 | finished: |
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101 | // did not match -> last field |
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102 | (*hyp_size_func) (-2); |
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103 | } |
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104 | |
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105 | |
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106 | void SDP_Message::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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107 | { |
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108 | static Regex reg_field("^(([a-z])=)([^\\r\\n\\x00]*)"); |
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109 | |
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110 | const char* expected = NULL; |
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111 | |
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112 | switch (id) |
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113 | { |
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114 | case id_protocol_version: expected = "v"; goto mandatory; |
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115 | case id_origin: expected = "o"; goto mandatory; |
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116 | case id_session_name: expected = "s"; goto mandatory; |
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117 | case id_information: expected = "i"; goto optional_once; |
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118 | |
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119 | // TODO: check that this is a valid URI ??? |
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120 | case id_uri: expected = "u"; goto optional_once; |
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121 | case id_emails: expected = "e"; goto optional_many; |
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122 | case id_phone_numbers: expected = "p"; goto optional_many; |
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123 | case id_connection: expected = "c"; goto optional_once; |
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124 | case id_bandwidth: expected = "b"; goto optional_many; |
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125 | case id_times: return; // times is not optional => always present |
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126 | // FIXME: SDP_timezone_list should not be here -> the TTCN-3 types should be changed |
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127 | // in the BNF, "z=" is allowed once after each "t=" fields (not after |
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128 | // the last one only) |
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129 | case id_timezone_adjustments: expected = "z"; goto optional_once; |
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130 | case id_key: expected = "k"; goto optional_once; |
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131 | case id_attributes: expected = "a"; goto optional_many; |
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132 | case id_media_list: expected = "m"; goto optional_many; |
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133 | } |
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134 | |
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135 | return; |
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136 | mandatory: |
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137 | reg_field.AssertMatch (buffer, this); |
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138 | |
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139 | SetHypFieldLength (id, reg_field.GetMatchedLength(3)); |
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140 | |
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141 | if (reg_field.GetMatchedString(2) != expected) { |
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142 | DecodeError e(this); |
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143 | e.Msg() << "missing mandatory field " << expected << "= before field " << reg_field.GetMatchedString(1) << endl; |
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144 | throw e; |
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145 | } |
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146 | reg_field.MovePast (buffer, 1); |
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147 | return; |
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148 | |
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149 | optional_once: |
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150 | if (reg_field.Match (buffer) && |
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151 | reg_field.GetMatchedString(2) == expected) |
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152 | { |
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153 | // the field is present |
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154 | SetHypFieldIsPresent (id, 1); |
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155 | SetHypFieldLength (id, reg_field.GetMatchedLength(3)); |
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156 | reg_field.MovePast (buffer, 1); |
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157 | } else { |
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158 | // the field is not present |
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159 | SetHypFieldIsPresent (id, 0); |
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160 | } |
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161 | return; |
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162 | |
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163 | optional_many: |
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164 | SetHypFieldIsPresent (id, |
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165 | (reg_field.Match (buffer) && |
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166 | reg_field.GetMatchedString(2) == expected) |
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167 | ? 1 |
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168 | : 0); |
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169 | } |
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170 | |
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171 | void SDP_Message::PostDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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172 | { |
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173 | // Here we match the trailing CRLF in the case the field is present |
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174 | static Regex reg_crlf ("^\r\n"); |
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175 | |
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176 | |
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177 | if (!IsPresent (id)) |
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178 | return; |
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179 | |
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180 | // the time field is not declared as optional |
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181 | // therefore we must check that the list is not empty |
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182 | if ((id == id_times) && (Get_times().GetSize() == 0)) |
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183 | return; |
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184 | |
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185 | reg_crlf.AssertMatch (buffer, this); |
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186 | reg_crlf.MovePast (buffer); |
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187 | } |
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188 | |
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189 | void SDP_Origin::PreDecode (Buffer& buffer) throw (DecodeError) |
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190 | { |
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191 | static Regex reg_origin ("("SDPREG_NON_WS_STRING")" // username |
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192 | SDPREG_SP "([0-9]+)" // session-id |
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193 | SDPREG_SP "([0-9]+)" // session-version |
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194 | SDPREG_SP "("SDPREG_TOKEN")" // net-type |
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195 | SDPREG_SP "("SDPREG_TOKEN")" // addr-type |
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196 | SDPREG_SP "("SDPREG_NON_WS_STRING")"); // unicast-address |
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197 | reg_origin.AssertMatch (buffer, this); |
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198 | for (int i=0 ; i<6 ; i++) { |
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199 | SetHypFieldLength (i, reg_origin.GetMatchedLength(i+1)); |
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200 | } |
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201 | } |
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202 | |
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203 | void SDP_Origin::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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204 | { |
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205 | if (id) { |
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206 | static Regex reg_sp (" "); |
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207 | reg_sp.AssertMatch (buffer, this); |
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208 | reg_sp.MovePast (buffer); |
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209 | } |
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210 | } |
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211 | |
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212 | #define SDP_CODET_HEADER_LIST(letter, type) \ |
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213 | void type::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) \ |
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214 | { \ |
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215 | pre_decode_optional_field_multiple_times (*this, id, buffer, letter, &SetHypSize, &SetHypFieldLength); \ |
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216 | } |
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217 | |
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218 | SDP_CODET_HEADER_LIST ("e", SDP_email_list); |
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219 | SDP_CODET_HEADER_LIST ("p", SDP_phone_list); |
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220 | SDP_CODET_HEADER_LIST ("b", SDP_bandwidth_list); |
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221 | SDP_CODET_HEADER_LIST ("r", SDP_repeat_list); |
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222 | SDP_CODET_HEADER_LIST ("a", SDP_attribute_list); |
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223 | SDP_CODET_HEADER_LIST ("c", SDP_connection_list); |
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224 | |
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225 | |
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226 | |
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227 | void dummy (int a) { |
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228 | } |
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229 | // SDL_time and SDP_media_desc list are a little unusual compared to other |
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230 | // headers since these record can contain a list of headers |
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231 | // |
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232 | // In order to be able to decode it, we will not put any length |
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233 | // constraint on this header (thus passing &dummy instead of |
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234 | // &SetHypFieldLength), then it will be possible to decode the |
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235 | // repeate headers after the CRLF |
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236 | void SDP_time_list::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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237 | { |
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238 | pre_decode_optional_field_multiple_times (*this, id, buffer, "t", &SetHypSize, &dummy); |
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239 | } |
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240 | void SDP_media_desc_list::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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241 | { |
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242 | pre_decode_optional_field_multiple_times (*this, id, buffer, "m", &SetHypSize, &dummy); |
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243 | } |
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244 | |
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245 | |
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246 | void SDP_contact::PreDecode (Buffer& buffer) throw (DecodeError) |
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247 | { |
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248 | static Regex reg_addrspec_comment ("^(" SDPREG_ADDR_SPEC ")(" SDPREG_SP "[(](["SDPCHARS_EMAIL_SAFE"]+)[)])?"); |
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249 | static Regex reg_dispname_and_addr ("^(["SDPCHARS_EMAIL_SAFE"]+)" SDPREG_SP "<(" SDPREG_ADDR_SPEC ")>"); |
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250 | |
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251 | static Regex reg_phone_comment ("^(" SDPREG_PHONE ")(" SDPREG_SP "[(](["SDPCHARS_EMAIL_SAFE"]+)[)])?"); |
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252 | static Regex reg_dispname_and_phone ("^(["SDPCHARS_EMAIL_SAFE"]+)" SDPREG_SP "<(" SDPREG_PHONE ")>"); |
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253 | |
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254 | Regex *reg_normal, *reg_reverse; |
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255 | if (dynamic_cast<SDP_phone_list*>(GetParent())) { |
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256 | // this is a phone contact |
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257 | reg_normal = ®_phone_comment; |
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258 | reg_reverse = ®_dispname_and_phone; |
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259 | } else { |
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260 | // this is an email contact |
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261 | reg_normal = ®_addrspec_comment; |
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262 | reg_reverse = ®_dispname_and_addr; |
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263 | } |
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264 | |
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265 | // by default we assume that there is no name displayed |
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266 | SetHypFieldIsPresent (id_disp_name, 0); |
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267 | |
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268 | if (reg_normal->Match (buffer)) { |
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269 | mReverseOrder = false; |
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270 | SetHypFieldLength (id_addr_or_phone, reg_normal->GetMatchedLength (1)); |
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271 | mHasComment = reg_normal->GetMatchedLength (2); |
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272 | if (mHasComment) { |
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273 | SetHypFieldIsPresent (id_disp_name, 1); |
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274 | SetHypFieldLength (id_disp_name, reg_normal->GetMatchedLength (3)); |
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275 | } |
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276 | } else if (reg_reverse->Match (buffer)) { |
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277 | mReverseOrder = true; |
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278 | SetHypFieldLength (id_addr_or_phone, reg_reverse->GetMatchedLength (2)); |
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279 | SetHypFieldIsPresent (id_disp_name, 1); |
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280 | SetHypFieldLength (id_disp_name, reg_reverse->GetMatchedLength (1)); |
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281 | // remember the position of the display name to be able |
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282 | // to decode it later |
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283 | mNextPosition = buffer.GetPosition(); |
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284 | // then place the cursor of the buffer at the position of the |
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285 | // email address |
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286 | reg_reverse->MoveAt (buffer, 2); |
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287 | } else { |
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288 | throw DecodeError (this, "Cannot match email address or phone number\n"); |
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289 | } |
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290 | } |
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291 | |
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292 | void SDP_contact::PostDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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293 | { |
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294 | if (mReverseOrder) { |
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295 | if (id == id_addr_or_phone) { |
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296 | int disp_name_position = mNextPosition; |
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297 | // remember the position past the closing ">" |
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298 | mNextPosition = buffer.GetPosition() + 8; |
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299 | buffer.SetPosition (disp_name_position); |
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300 | } else { |
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301 | // once everything is decoded we move forward to the |
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302 | // end of the message field |
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303 | buffer.SetPosition (mNextPosition); |
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304 | } |
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305 | } else if (mHasComment) { |
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306 | buffer.SetPosition (buffer.GetPosition() + ( |
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307 | (id == id_addr_or_phone) |
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308 | ? 16 // move past the " (" |
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309 | : 8 // move past the ")" |
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310 | )); |
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311 | } |
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312 | } |
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313 | |
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314 | void SDP_connection::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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315 | { |
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316 | if (id == id_net_type) { |
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317 | static Regex reg_connection ("^(" SDPREG_TOKEN ") (" SDPREG_TOKEN ") (" SDPREG_NON_WS_STRING ")"); |
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318 | |
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319 | reg_connection.AssertMatch (buffer, this); |
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320 | SetHypFieldLength (id_net_type, reg_connection.GetMatchedLength (1)); |
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321 | SetHypFieldLength (id_addr_type, reg_connection.GetMatchedLength (2)); |
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322 | SetHypFieldLength (id_conn_addr, reg_connection.GetMatchedLength (3)); |
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323 | |
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324 | } else { |
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325 | buffer.SetPosition (buffer.GetPosition() + 8); // move past the SP |
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326 | } |
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327 | } |
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328 | |
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329 | void SDP_conn_addr::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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330 | { |
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331 | if (id == id_addr) { |
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332 | static Regex reg_ip4 ("^("SDPREG_IP4_ADDRESS")((?:[/]("SDPREG_INTEGER"))?((?:[/]("SDPREG_INTEGER"))?))"); |
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333 | static Regex reg_ip6 ("^([0-9a-fA-F.:]+)((?:[/]("SDPREG_INTEGER"))?)"); |
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334 | unsigned char ip6_addr[16]; |
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335 | |
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336 | // use ascii format for the integers |
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337 | Get_ttl().SetFormat(Integer::AsciiDecimal); |
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338 | Get_num_of_addr().SetFormat(Integer::AsciiDecimal); |
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339 | |
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340 | // ttl and addr_num are not present by default |
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341 | SetHypFieldIsPresent (id_ttl, 0); |
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342 | SetHypFieldIsPresent (id_num_of_addr, 0); |
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343 | /* |
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344 | reg_ip4.AssertMatch (buffer, this); |
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345 | for (int i=0 ; i<6 ; i++) { |
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346 | cerr << "Matched string " << i << " -> " << reg_ip4.GetMatchedString (i) << endl; |
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347 | cerr << "Matched length " << i << " -> " << reg_ip4.GetMatchedLength (i) << endl; |
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348 | } |
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349 | */ |
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350 | if (reg_ip4.Match (buffer)) { |
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351 | SetHypFieldLength (id_addr, reg_ip4.GetMatchedLength (1)); |
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352 | if (atoi (reg_ip4.GetMatchedString(1).c_str()) < 224) { |
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353 | // unicast address |
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354 | if (reg_ip4.GetMatchedLength(2) | reg_ip4.GetMatchedLength(4)) |
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355 | throw DecodeError (this, "TTL and/or number of connections fields can be present only with multicast addresses\n"); |
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356 | |
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357 | } else { |
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358 | // multicast address |
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359 | if (! reg_ip4.GetMatchedLength (2)) |
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360 | throw DecodeError (this, "IPv4 multicast address must be followed with the TTL"); |
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361 | SetHypFieldIsPresent (id_ttl, 1); |
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362 | SetHypFieldLength (id_ttl, reg_ip4.GetMatchedLength (3)); |
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363 | if (reg_ip4.GetMatchedLength (4)) { |
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364 | SetHypFieldIsPresent (id_num_of_addr, 1); |
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365 | SetHypFieldLength (id_num_of_addr, reg_ip4.GetMatchedLength (5)); |
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366 | } |
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367 | } |
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368 | } else if ( reg_ip6.Match (buffer) |
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369 | #ifndef WIN32 |
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370 | // FIXME: inet_pton does not exist in WIN32 |
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371 | && (inet_pton (AF_INET6, reg_ip6.GetMatchedString(1).c_str(), &ip6_addr) == 1) // if it does not contain a valid ipv6 address, then |
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372 | // we will parse it as another address family |
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373 | #endif |
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374 | ) { |
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375 | SetHypFieldLength (id_addr, reg_ip6.GetMatchedLength (1)); |
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376 | if (ip6_addr[0] != 0xFF) { |
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377 | // unicast address |
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378 | if (reg_ip4.GetMatchedLength(2)) |
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379 | throw DecodeError (this, "The number of connections can be present only with multicast addresses\n"); |
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380 | |
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381 | } else { |
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382 | // multicast address |
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383 | if (reg_ip6.GetMatchedLength (2)) { |
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384 | SetHypFieldIsPresent (id_num_of_addr, 1); |
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385 | SetHypFieldLength (id_num_of_addr, reg_ip6.GetMatchedLength (3)); |
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386 | } |
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387 | } |
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388 | } else { |
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389 | // if it is not an ipv4 or ipv6 address |
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390 | // then we put everything in the addr field |
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391 | } |
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392 | |
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393 | } else if (GetHypFieldIsPresent (id)) { |
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394 | buffer.SetPosition (buffer.GetPosition() + 8); // move past the "/" |
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395 | } |
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396 | } |
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397 | |
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398 | void SDP_bandwidth::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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399 | { |
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400 | if (id == id_modifier) { |
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401 | static Regex reg_bw ("^(" SDPREG_TOKEN "):([0-9]+)"); |
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402 | reg_bw.AssertMatch (buffer, this); |
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403 | SetHypFieldLength (id_modifier, reg_bw.GetMatchedLength(1)); |
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404 | SetHypFieldLength (id_bandwidth, reg_bw.GetMatchedLength(2)); |
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405 | } else { |
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406 | Get_bandwidth().SetFormat(Integer::AsciiDecimal); |
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407 | Unsigned(8).Decode(buffer); // move past the colon |
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408 | } |
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409 | } |
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410 | |
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411 | void SDP_time::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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412 | { |
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413 | if (id == id_time_repeat) { |
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414 | static Regex reg_repeat ("^(\r\n)r="); |
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415 | |
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416 | if (reg_repeat.Match (buffer)) { |
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417 | SetHypFieldIsPresent (id, 1); |
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418 | reg_repeat.MovePast (buffer, 1); |
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419 | } else { |
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420 | SetHypFieldIsPresent (id, 0); |
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421 | } |
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422 | } |
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423 | } |
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424 | |
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425 | void SDP_time_field::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
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426 | { |
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427 | if (id == id_start_time) { |
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428 | static Regex reg_times ("^(" SDPREG_TIME_INTEGER ")" SDPREG_SP "(" SDPREG_TIME_INTEGER ")"); |
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429 | reg_times.AssertMatch (buffer, this); |
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430 | SetHypFieldLength (id_start_time, reg_times.GetMatchedLength (1)); |
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431 | SetHypFieldLength (id_stop_time, reg_times.GetMatchedLength (2)); |
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432 | } else { |
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433 | Unsigned(8).Decode (buffer); // move past the SP |
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434 | } |
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435 | } |
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436 | |
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437 | void SDP_typed_time::PreDecode (Buffer& buffer) throw (DecodeError) |
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438 | { |
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439 | static Regex reg_ttime ("^(-?[0-9]*)([dhms]?)"); |
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440 | reg_ttime.AssertMatch (buffer, this); |
---|
441 | |
---|
442 | Get_time().SetFormat(Integer::AsciiDecimal); |
---|
443 | SetHypFieldLength (id_time, reg_ttime.GetMatchedLength (1)); |
---|
444 | |
---|
445 | bool has_unit = reg_ttime.GetMatchedLength (2); |
---|
446 | SetHypFieldIsPresent (id_unit, has_unit ? 1 : 0); |
---|
447 | if (has_unit) { |
---|
448 | SetHypFieldLength (id_unit, 8); |
---|
449 | } |
---|
450 | } |
---|
451 | |
---|
452 | void SDP_repeat::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
453 | { |
---|
454 | if (id == id_active) { |
---|
455 | static Regex reg_sp ("^" SDPREG_SP); |
---|
456 | reg_sp.AssertMatch (buffer, this); |
---|
457 | reg_sp.MovePast (buffer, 0); |
---|
458 | } |
---|
459 | } |
---|
460 | |
---|
461 | void SDP_typed_time_list::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
462 | { |
---|
463 | static Regex reg_sp ("^(" SDPREG_SP ")[0-9]+"); |
---|
464 | if (reg_sp.Match (buffer)) { |
---|
465 | reg_sp.MovePast (buffer, 1); |
---|
466 | } else { |
---|
467 | SetHypSize (-2); |
---|
468 | } |
---|
469 | } |
---|
470 | |
---|
471 | void SDP_timezone_list::PostDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
472 | { |
---|
473 | static Regex reg_sp ("^(" SDPREG_SP ")[0-9]"); |
---|
474 | if (reg_sp.Match (buffer)) { |
---|
475 | reg_sp.MovePast (buffer, 1); |
---|
476 | } else { |
---|
477 | SetHypSize (-2); |
---|
478 | } |
---|
479 | } |
---|
480 | |
---|
481 | void SDP_timezone::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
482 | { |
---|
483 | if (id == id_adjustment_time) { |
---|
484 | static Regex reg_tz ("^([1-9][0-9]*)" SDPREG_SP); |
---|
485 | reg_tz.AssertMatch (buffer, this); |
---|
486 | SetHypFieldLength (id_adjustment_time, reg_tz.GetMatchedLength(1)); |
---|
487 | } else { |
---|
488 | Unsigned(8).Decode(buffer); // move past the SP |
---|
489 | } |
---|
490 | } |
---|
491 | |
---|
492 | void SDP_key::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
493 | { |
---|
494 | if (id == id_method) { |
---|
495 | static Regex reg_method ("^(prompt|clear|base64|uri)(:?)"); |
---|
496 | reg_method.AssertMatch (buffer, this); |
---|
497 | |
---|
498 | if (reg_method.GetMatchedString(1) == "prompt") { |
---|
499 | if (reg_method.GetMatchedLength(2)) |
---|
500 | throw DecodeError (this, "the 'prompt' method must not be followed by a value\n"); |
---|
501 | } else { |
---|
502 | if (!reg_method.GetMatchedLength(2)) |
---|
503 | throw DecodeError (this, "the method must not be followed by a value\n"); |
---|
504 | } |
---|
505 | SetHypFieldLength (id_method, reg_method.GetMatchedLength (1)); |
---|
506 | SetHypFieldIsPresent (id_key, reg_method.GetMatchedLength (2) ? 1 : 0); |
---|
507 | } else { |
---|
508 | if (GetHypFieldIsPresent (id)) { |
---|
509 | Unsigned(8).Decode(buffer); // move past the colon |
---|
510 | // TODO: validate the content of the key ? |
---|
511 | } |
---|
512 | } |
---|
513 | } |
---|
514 | |
---|
515 | class SdpAttributeMap { |
---|
516 | public: |
---|
517 | struct Entry { |
---|
518 | Entry (const char* name, int id_attr) |
---|
519 | : mName (name), mIdAttribute (id_attr) |
---|
520 | {} |
---|
521 | const std::string mName; |
---|
522 | const int mIdAttribute; |
---|
523 | }; |
---|
524 | |
---|
525 | static const Entry& GetByName (const std::string& key) |
---|
526 | { |
---|
527 | const mMapName_t& m = msInstance.mMapName; |
---|
528 | mMapName_t::const_iterator it = m.find (key); |
---|
529 | if (it != m.end()) { |
---|
530 | return *it->second; |
---|
531 | } else { |
---|
532 | return *msInstance.mUndef; |
---|
533 | } |
---|
534 | } |
---|
535 | |
---|
536 | static const Entry& GetByIdMessageHeader (int key) |
---|
537 | { |
---|
538 | const std::map<int, Entry*>& m = msInstance.mMapIdAttribute; |
---|
539 | std::map <int, Entry*>::const_iterator it = m.find (key); |
---|
540 | if (it != m.end()) { |
---|
541 | return *it->second; |
---|
542 | } else { |
---|
543 | return *msInstance.mUndef; |
---|
544 | } |
---|
545 | } |
---|
546 | |
---|
547 | |
---|
548 | private: |
---|
549 | void AddEntry (const Entry& entry) { |
---|
550 | mEntries.push_back(entry); |
---|
551 | Entry& e = *mEntries.rbegin(); |
---|
552 | |
---|
553 | //TODO: check unicity |
---|
554 | mMapName[e.mName] = &e; |
---|
555 | mMapIdAttribute[e.mIdAttribute] = &e; |
---|
556 | } |
---|
557 | |
---|
558 | SdpAttributeMap() { |
---|
559 | |
---|
560 | #define SDP_ATTRIBUTE_ADD(name) AddEntry (Entry (#name, SDP_attribute::id_ ## name)); |
---|
561 | |
---|
562 | // Name |
---|
563 | SDP_ATTRIBUTE_ADD (cat); |
---|
564 | SDP_ATTRIBUTE_ADD (keywds); |
---|
565 | SDP_ATTRIBUTE_ADD (tool); |
---|
566 | SDP_ATTRIBUTE_ADD (ptime); |
---|
567 | SDP_ATTRIBUTE_ADD (recvonly); |
---|
568 | SDP_ATTRIBUTE_ADD (sendrecv); |
---|
569 | SDP_ATTRIBUTE_ADD (sendonly); |
---|
570 | SDP_ATTRIBUTE_ADD (inactive); |
---|
571 | SDP_ATTRIBUTE_ADD (orient); |
---|
572 | AddEntry (Entry ("type", SDP_attribute::id_sdp_type)); |
---|
573 | SDP_ATTRIBUTE_ADD (sdp_type); |
---|
574 | SDP_ATTRIBUTE_ADD (charset); |
---|
575 | SDP_ATTRIBUTE_ADD (sdplang); |
---|
576 | SDP_ATTRIBUTE_ADD (lang); |
---|
577 | SDP_ATTRIBUTE_ADD (framerate); |
---|
578 | SDP_ATTRIBUTE_ADD (quality); |
---|
579 | SDP_ATTRIBUTE_ADD (fmtp); |
---|
580 | SDP_ATTRIBUTE_ADD (rtpmap); |
---|
581 | SDP_ATTRIBUTE_ADD (rtcp); |
---|
582 | |
---|
583 | // RFC 3312 attributes |
---|
584 | SDP_ATTRIBUTE_ADD (curr); |
---|
585 | SDP_ATTRIBUTE_ADD (des); |
---|
586 | SDP_ATTRIBUTE_ADD (conf); |
---|
587 | { |
---|
588 | mEntries.push_back(Entry("", SDP_attribute::id_unknown)); |
---|
589 | Entry& e = *mEntries.rbegin(); |
---|
590 | mMapIdAttribute[e.mIdAttribute] = &e; |
---|
591 | mUndef = &e; |
---|
592 | } |
---|
593 | } |
---|
594 | |
---|
595 | static SdpAttributeMap msInstance; |
---|
596 | |
---|
597 | std::list<Entry> mEntries; |
---|
598 | Entry* mUndef; |
---|
599 | |
---|
600 | typedef std::map <std::string, Entry*> mMapName_t; |
---|
601 | mMapName_t mMapName; |
---|
602 | std::map <int, Entry*> mMapIdAttribute; |
---|
603 | }; |
---|
604 | SdpAttributeMap SdpAttributeMap::msInstance; |
---|
605 | |
---|
606 | void SDP_attribute::PreDecode (Buffer& buffer) throw (DecodeError) |
---|
607 | { |
---|
608 | Regex reg_attr ("^("SDPREG_TOKEN")(?:(:)("SDPREG_BYTE_STRING"))?"); |
---|
609 | reg_attr.AssertMatch (buffer, this); |
---|
610 | |
---|
611 | int id = SdpAttributeMap::GetByName (reg_attr.GetMatchedString(1)).mIdAttribute; |
---|
612 | |
---|
613 | SetHypChosenId (id); |
---|
614 | if (id != id_unknown) { |
---|
615 | SetHypLength (reg_attr.GetMatchedLength(3)); |
---|
616 | reg_attr.MovePast(buffer, |
---|
617 | (reg_attr.GetMatchedLength(2) ? 2 : 1) |
---|
618 | ); |
---|
619 | } |
---|
620 | } |
---|
621 | |
---|
622 | void SDP_attribute_unknown::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
623 | { |
---|
624 | if (id == id_name) { |
---|
625 | Regex reg_attr ("^("SDPREG_TOKEN")((?::("SDPREG_BYTE_STRING"))?)"); |
---|
626 | reg_attr.AssertMatch (buffer, this); |
---|
627 | |
---|
628 | SetHypFieldLength (id_name, reg_attr.GetMatchedLength (1)); |
---|
629 | |
---|
630 | int val_len = reg_attr.GetMatchedLength(3); |
---|
631 | SetHypFieldIsPresent (id_attr_value, (val_len ? 1 : 0)); |
---|
632 | if (val_len) |
---|
633 | SetHypFieldLength (id_attr_value, val_len); |
---|
634 | } else if (GetHypFieldIsPresent (id)){ |
---|
635 | Unsigned(8).Decode(buffer); // move past the colon |
---|
636 | } |
---|
637 | } |
---|
638 | |
---|
639 | void SDP_attribute_curr::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
640 | { |
---|
641 | if (id == 0) { |
---|
642 | Regex reg_attr ("^("SDPREG_TOKEN")" SDPREG_SP "(e2e|local|remote)" SDPREG_SP "(none|sendrecv|send|recv)"); |
---|
643 | reg_attr.AssertMatch (buffer, this); |
---|
644 | |
---|
645 | SetHypFieldLength (0, reg_attr.GetMatchedLength (1)); |
---|
646 | SetHypFieldLength (1, reg_attr.GetMatchedLength (2)); |
---|
647 | SetHypFieldLength (2, reg_attr.GetMatchedLength (3)); |
---|
648 | |
---|
649 | } else if (GetHypFieldIsPresent (id)){ |
---|
650 | Unsigned(8).Decode(buffer); // move past the space |
---|
651 | } |
---|
652 | } |
---|
653 | |
---|
654 | void SDP_attribute_des::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
655 | { |
---|
656 | if (id == 0) { |
---|
657 | Regex reg_attr ("^("SDPREG_TOKEN")" SDPREG_SP "(mandatory|optional|none|failure|unknown)" SDPREG_SP "(e2e|local|remote)" SDPREG_SP "(none|sendrecv|send|recv)"); |
---|
658 | reg_attr.AssertMatch (buffer, this); |
---|
659 | |
---|
660 | SetHypFieldLength (0, reg_attr.GetMatchedLength (1)); |
---|
661 | SetHypFieldLength (1, reg_attr.GetMatchedLength (2)); |
---|
662 | SetHypFieldLength (2, reg_attr.GetMatchedLength (3)); |
---|
663 | SetHypFieldLength (3, reg_attr.GetMatchedLength (4)); |
---|
664 | |
---|
665 | } else if (GetHypFieldIsPresent (id)){ |
---|
666 | Unsigned(8).Decode(buffer); // move past the space |
---|
667 | } |
---|
668 | } |
---|
669 | |
---|
670 | void SDP_attribute_conf::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
671 | { |
---|
672 | if (id == 0) { |
---|
673 | Regex reg_attr ("^("SDPREG_TOKEN")" SDPREG_SP "(e2e|local|remote)" SDPREG_SP "(none|sendrecv|send|recv)"); |
---|
674 | reg_attr.AssertMatch (buffer, this); |
---|
675 | |
---|
676 | SetHypFieldLength (0, reg_attr.GetMatchedLength (1)); |
---|
677 | SetHypFieldLength (1, reg_attr.GetMatchedLength (2)); |
---|
678 | SetHypFieldLength (2, reg_attr.GetMatchedLength (3)); |
---|
679 | |
---|
680 | } else if (GetHypFieldIsPresent (id)){ |
---|
681 | Unsigned(8).Decode(buffer); // move past the space |
---|
682 | } |
---|
683 | } |
---|
684 | |
---|
685 | void SDP_media_field::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
686 | { |
---|
687 | static Regex reg_media ("^("SDPREG_TOKEN")" SDPREG_SP "([0-9/]+)" SDPREG_SP "("SDPREG_TOKEN"(?:/"SDPREG_TOKEN")*)" ); |
---|
688 | |
---|
689 | if (id==0) { |
---|
690 | reg_media.AssertMatch (buffer, this); |
---|
691 | SetHypFieldLength (id_media, reg_media.GetMatchedLength (1)); |
---|
692 | SetHypFieldLength (id_ports, reg_media.GetMatchedLength (2)); |
---|
693 | SetHypFieldLength (id_transport, reg_media.GetMatchedLength (3)); |
---|
694 | } else if (id != id_fmts) { |
---|
695 | Unsigned(8).Decode(buffer); // move past the SP |
---|
696 | } |
---|
697 | } |
---|
698 | |
---|
699 | void SDP_media_field::PostDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
700 | { |
---|
701 | static Regex reg_space ("^"SDPREG_SP); |
---|
702 | if(id == id_ports) { |
---|
703 | // Necessary as 2nd part of SDP_media_port regex |
---|
704 | // could be a mismatch (ex: num-of_ports=0) ! |
---|
705 | reg_space.AssertMatch(buffer, this); |
---|
706 | } |
---|
707 | } |
---|
708 | |
---|
709 | void SDP_media_port::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
710 | { |
---|
711 | static Regex reg_port ("^([0-9]+)(/("SDPREG_INTEGER"))?"); |
---|
712 | |
---|
713 | if (id == 0) { |
---|
714 | reg_port.AssertMatch (buffer, this); |
---|
715 | |
---|
716 | Get_port_number().SetFormat(Integer::AsciiDecimal); |
---|
717 | SetHypFieldLength (id_port_number, reg_port.GetMatchedLength(1)); |
---|
718 | if (reg_port.GetMatchedLength (2)) { |
---|
719 | SetHypFieldIsPresent (id_num_of_ports, 1); |
---|
720 | SetHypFieldLength (id_num_of_ports, reg_port.GetMatchedLength(3)); |
---|
721 | Get_num_of_ports().SetFormat(Integer::AsciiDecimal); |
---|
722 | } else { |
---|
723 | SetHypFieldIsPresent (id_num_of_ports, 0); |
---|
724 | } |
---|
725 | } else { |
---|
726 | if (GetHypFieldIsPresent (id)) { |
---|
727 | Unsigned(8).Decode(buffer); // move past the '/' |
---|
728 | } |
---|
729 | } |
---|
730 | } |
---|
731 | |
---|
732 | void SDP_fmt_list::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
733 | { |
---|
734 | static Regex reg_fmt ("^"SDPREG_SP"("SDPREG_TOKEN")"); |
---|
735 | if (reg_fmt.Match (buffer)) { |
---|
736 | reg_fmt.MoveAt (buffer, 1); |
---|
737 | SetHypFieldLength (reg_fmt.GetMatchedLength(1)); |
---|
738 | } else { |
---|
739 | SetHypSize (-2); |
---|
740 | } |
---|
741 | } |
---|
742 | |
---|
743 | void SDP_media_desc::PreDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
744 | { |
---|
745 | if (id == id_media_field) |
---|
746 | // media_field is always present and the "m=" was |
---|
747 | // already processed by SDP_message::PreDecodeField() |
---|
748 | return; |
---|
749 | |
---|
750 | static Regex reg_field("^(([a-z])=)([^\\r\\n\\x00]*)"); |
---|
751 | |
---|
752 | const char* expected = NULL; |
---|
753 | |
---|
754 | switch (id) |
---|
755 | { |
---|
756 | case id_information: expected = "i"; goto optional_once; |
---|
757 | case id_connections: expected = "c"; goto optional_many; |
---|
758 | case id_bandwidth: expected = "b"; goto optional_once; |
---|
759 | case id_key: expected = "k"; goto optional_once; |
---|
760 | case id_attributes: expected = "a"; goto optional_many; |
---|
761 | } |
---|
762 | |
---|
763 | return; |
---|
764 | mandatory: |
---|
765 | reg_field.AssertMatch (buffer, this); |
---|
766 | |
---|
767 | SetHypFieldLength (id, reg_field.GetMatchedLength(3)); |
---|
768 | |
---|
769 | if (reg_field.GetMatchedString(2) != expected) { |
---|
770 | DecodeError e(this); |
---|
771 | e.Msg() << "missing mandatory field " << expected << "= before field " << reg_field.GetMatchedString(1) << endl; |
---|
772 | throw e; |
---|
773 | } |
---|
774 | reg_field.MovePast (buffer, 1); |
---|
775 | return; |
---|
776 | |
---|
777 | optional_once: |
---|
778 | if (reg_field.Match (buffer) && |
---|
779 | reg_field.GetMatchedString(2) == expected) |
---|
780 | { |
---|
781 | // the field is present |
---|
782 | SetHypFieldIsPresent (id, 1); |
---|
783 | SetHypFieldLength (id, reg_field.GetMatchedLength(3)); |
---|
784 | reg_field.MovePast (buffer, 1); |
---|
785 | } else { |
---|
786 | // the field is not present |
---|
787 | SetHypFieldIsPresent (id, 0); |
---|
788 | } |
---|
789 | return; |
---|
790 | |
---|
791 | optional_many: |
---|
792 | SetHypFieldIsPresent (id, |
---|
793 | (reg_field.Match (buffer) && |
---|
794 | reg_field.GetMatchedString(2) == expected) |
---|
795 | ? 1 |
---|
796 | : 0); |
---|
797 | } |
---|
798 | |
---|
799 | void SDP_media_desc::PostDecodeField (int id, Buffer& buffer) throw (DecodeError) |
---|
800 | { |
---|
801 | static Regex reg_crlf ("^\r\n"); |
---|
802 | if (IsPresent (id)) { |
---|
803 | reg_crlf.AssertMatch (buffer, this); |
---|
804 | reg_crlf.MovePast (buffer); |
---|
805 | } |
---|
806 | } |
---|
807 | |
---|
808 | void SDP_media_desc::PostDecode (Buffer& buffer) throw (DecodeError) |
---|
809 | { |
---|
810 | buffer.SetPosition(buffer.GetPosition()-16); // go back 2 chars so that the CRLF is matched by the SDP_Message::PostDecodeField(); |
---|
811 | } |
---|
812 | |
---|
813 | |
---|
814 | // |
---|
815 | // Implementation of the encoder for SDP |
---|
816 | // |
---|
817 | |
---|
818 | void SDP_Message::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
819 | { |
---|
820 | Charstring csHeader; |
---|
821 | |
---|
822 | if(IsPresent(field_id)) { |
---|
823 | switch(field_id) { |
---|
824 | case id_protocol_version: |
---|
825 | Get_protocol_version().SetFormat(Integer::AsciiDecimal); |
---|
826 | csHeader.SetValue("v="); |
---|
827 | csHeader.Encode(buffer); |
---|
828 | break; |
---|
829 | case id_origin: |
---|
830 | csHeader.SetValue("o="); |
---|
831 | csHeader.Encode(buffer); |
---|
832 | break; |
---|
833 | case id_session_name: |
---|
834 | csHeader.SetValue("s="); |
---|
835 | csHeader.Encode(buffer); |
---|
836 | break; |
---|
837 | case id_information: |
---|
838 | csHeader.SetValue("i="); |
---|
839 | csHeader.Encode(buffer); |
---|
840 | break; |
---|
841 | case id_uri: |
---|
842 | csHeader.SetValue("u="); |
---|
843 | csHeader.Encode(buffer); |
---|
844 | break; |
---|
845 | case id_connection: |
---|
846 | csHeader.SetValue("c="); |
---|
847 | csHeader.Encode(buffer); |
---|
848 | break; |
---|
849 | case id_key: |
---|
850 | csHeader.SetValue("k="); |
---|
851 | csHeader.Encode(buffer); |
---|
852 | break; |
---|
853 | case id_timezone_adjustments: |
---|
854 | csHeader.SetValue("z="); |
---|
855 | csHeader.Encode(buffer); |
---|
856 | break; |
---|
857 | } |
---|
858 | } |
---|
859 | } |
---|
860 | |
---|
861 | void SDP_Message::PostEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
862 | { |
---|
863 | Charstring csCRLF; |
---|
864 | csCRLF.SetValue("\r\n"); |
---|
865 | |
---|
866 | |
---|
867 | switch(field_id) { |
---|
868 | case id_protocol_version: |
---|
869 | case id_origin: |
---|
870 | case id_session_name: |
---|
871 | case id_information: |
---|
872 | case id_uri: |
---|
873 | case id_connection: |
---|
874 | case id_key: |
---|
875 | case id_timezone_adjustments: |
---|
876 | if(IsPresent(field_id)) { |
---|
877 | csCRLF.Encode(buffer); |
---|
878 | } |
---|
879 | break; |
---|
880 | case id_emails: |
---|
881 | case id_phone_numbers: |
---|
882 | case id_bandwidth: |
---|
883 | case id_times: |
---|
884 | case id_attributes: |
---|
885 | case id_media_list: |
---|
886 | break; |
---|
887 | } |
---|
888 | } |
---|
889 | |
---|
890 | void SDP_Origin::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
891 | { |
---|
892 | Charstring csSpace; |
---|
893 | csSpace.SetValue(" "); |
---|
894 | |
---|
895 | if(field_id != 0) { |
---|
896 | csSpace.Encode(buffer); |
---|
897 | } |
---|
898 | } |
---|
899 | |
---|
900 | void SDP_connection::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
901 | { |
---|
902 | Charstring csSpace; |
---|
903 | csSpace.SetValue(" "); |
---|
904 | |
---|
905 | if(field_id != 0) { |
---|
906 | csSpace.Encode(buffer); |
---|
907 | } |
---|
908 | } |
---|
909 | |
---|
910 | void SDP_conn_addr::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
911 | { |
---|
912 | Get_ttl().SetFormat(Integer::AsciiDecimal); |
---|
913 | Get_num_of_addr().SetFormat(Integer::AsciiDecimal); |
---|
914 | } |
---|
915 | |
---|
916 | void SDP_conn_addr::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
917 | { |
---|
918 | Charstring csSlash; |
---|
919 | csSlash.SetValue("/"); |
---|
920 | |
---|
921 | if(IsPresent(field_id)) { |
---|
922 | switch(field_id) { |
---|
923 | case id_ttl: |
---|
924 | case id_num_of_addr: |
---|
925 | csSlash.Encode(buffer); |
---|
926 | break; |
---|
927 | } |
---|
928 | } |
---|
929 | } |
---|
930 | |
---|
931 | void SDP_email_list::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
932 | { |
---|
933 | Charstring csHeader; |
---|
934 | |
---|
935 | csHeader.SetValue("e="); |
---|
936 | csHeader.Encode(buffer); |
---|
937 | } |
---|
938 | |
---|
939 | void SDP_email_list::PostEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
940 | { |
---|
941 | Charstring csCRLF; |
---|
942 | csCRLF.SetValue("\r\n"); |
---|
943 | |
---|
944 | csCRLF.Encode(buffer); |
---|
945 | } |
---|
946 | |
---|
947 | void SDP_phone_list::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
948 | { |
---|
949 | Charstring csHeader; |
---|
950 | |
---|
951 | csHeader.SetValue("p="); |
---|
952 | csHeader.Encode(buffer); |
---|
953 | } |
---|
954 | |
---|
955 | void SDP_phone_list::PostEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
956 | { |
---|
957 | Charstring csCRLF; |
---|
958 | csCRLF.SetValue("\r\n"); |
---|
959 | |
---|
960 | csCRLF.Encode(buffer); |
---|
961 | } |
---|
962 | |
---|
963 | void SDP_bandwidth_list::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
964 | { |
---|
965 | } |
---|
966 | |
---|
967 | void SDP_bandwidth::PostEncode (Buffer& buffer) throw (EncodeError) |
---|
968 | { |
---|
969 | Charstring csCRLF; |
---|
970 | csCRLF.SetValue("\r\n"); |
---|
971 | |
---|
972 | csCRLF.Encode(buffer); |
---|
973 | } |
---|
974 | |
---|
975 | void SDP_bandwidth::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
976 | { |
---|
977 | Charstring csHeader; |
---|
978 | |
---|
979 | csHeader.SetValue("b="); |
---|
980 | csHeader.Encode(buffer); |
---|
981 | |
---|
982 | Get_bandwidth().SetFormat(Integer::AsciiDecimal); |
---|
983 | } |
---|
984 | |
---|
985 | void SDP_bandwidth::PostEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
986 | { |
---|
987 | Charstring csColon; |
---|
988 | csColon.SetValue(":"); |
---|
989 | |
---|
990 | if(field_id == id_modifier) { |
---|
991 | csColon.Encode(buffer); |
---|
992 | } |
---|
993 | } |
---|
994 | |
---|
995 | void SDP_timezone::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
996 | { |
---|
997 | Charstring csSpace; |
---|
998 | csSpace.SetValue(" "); |
---|
999 | |
---|
1000 | if(field_id != 0) { |
---|
1001 | csSpace.Encode(buffer); |
---|
1002 | } |
---|
1003 | } |
---|
1004 | |
---|
1005 | void SDP_timezone_list::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1006 | { |
---|
1007 | Charstring csSpace; |
---|
1008 | csSpace.SetValue(" "); |
---|
1009 | |
---|
1010 | if(field_id != 0) { |
---|
1011 | csSpace.Encode(buffer); |
---|
1012 | } |
---|
1013 | } |
---|
1014 | |
---|
1015 | void SDP_typed_time::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1016 | { |
---|
1017 | Get_time().SetFormat(Integer::AsciiDecimal); |
---|
1018 | } |
---|
1019 | |
---|
1020 | void SDP_attribute_list::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1021 | { |
---|
1022 | Charstring csHeader; |
---|
1023 | |
---|
1024 | csHeader.SetValue("a="); |
---|
1025 | csHeader.Encode(buffer); |
---|
1026 | } |
---|
1027 | |
---|
1028 | void SDP_attribute_list::PostEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1029 | { |
---|
1030 | Charstring csCRLF; |
---|
1031 | csCRLF.SetValue("\r\n"); |
---|
1032 | |
---|
1033 | csCRLF.Encode(buffer); |
---|
1034 | } |
---|
1035 | |
---|
1036 | void SDP_media_field::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1037 | { |
---|
1038 | Charstring csHeader; |
---|
1039 | |
---|
1040 | csHeader.SetValue("m="); |
---|
1041 | csHeader.Encode(buffer); |
---|
1042 | } |
---|
1043 | |
---|
1044 | void SDP_media_field::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1045 | { |
---|
1046 | Charstring csSpace; |
---|
1047 | csSpace.SetValue(" "); |
---|
1048 | |
---|
1049 | if(field_id != 0) { |
---|
1050 | csSpace.Encode(buffer); |
---|
1051 | } |
---|
1052 | } |
---|
1053 | |
---|
1054 | void SDP_fmt_list::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1055 | { |
---|
1056 | Charstring csSpace; |
---|
1057 | csSpace.SetValue(" "); |
---|
1058 | |
---|
1059 | if(field_id != 0) { |
---|
1060 | csSpace.Encode(buffer); |
---|
1061 | } |
---|
1062 | } |
---|
1063 | |
---|
1064 | void SDP_media_port::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1065 | { |
---|
1066 | Get_port_number().SetFormat(Integer::AsciiDecimal); |
---|
1067 | } |
---|
1068 | |
---|
1069 | void SDP_media_port::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1070 | { |
---|
1071 | Charstring csSlash; |
---|
1072 | csSlash.SetValue("/"); |
---|
1073 | |
---|
1074 | if((field_id == id_num_of_ports) && IsPresent(id_num_of_ports)) { |
---|
1075 | Get_num_of_ports().SetFormat(Integer::AsciiDecimal); |
---|
1076 | csSlash.Encode(buffer); |
---|
1077 | } |
---|
1078 | } |
---|
1079 | |
---|
1080 | void SDP_media_field::PostEncode (Buffer& buffer) throw (EncodeError) |
---|
1081 | { |
---|
1082 | Charstring csCRLF; |
---|
1083 | csCRLF.SetValue("\r\n"); |
---|
1084 | |
---|
1085 | csCRLF.Encode(buffer); |
---|
1086 | } |
---|
1087 | |
---|
1088 | void SDP_media_desc::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1089 | { |
---|
1090 | Charstring csHeader; |
---|
1091 | |
---|
1092 | if(IsPresent(field_id)) { |
---|
1093 | switch(field_id) { |
---|
1094 | case id_information: |
---|
1095 | csHeader.SetValue("i="); |
---|
1096 | csHeader.Encode(buffer); |
---|
1097 | break; |
---|
1098 | case id_key: |
---|
1099 | csHeader.SetValue("k="); |
---|
1100 | csHeader.Encode(buffer); |
---|
1101 | break; |
---|
1102 | } |
---|
1103 | } |
---|
1104 | } |
---|
1105 | |
---|
1106 | void SDP_media_desc::PostEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1107 | { |
---|
1108 | Charstring csCRLF; |
---|
1109 | csCRLF.SetValue("\r\n"); |
---|
1110 | |
---|
1111 | switch(field_id) { |
---|
1112 | case id_information: |
---|
1113 | case id_key: |
---|
1114 | if(IsPresent(field_id)) { |
---|
1115 | csCRLF.Encode(buffer); |
---|
1116 | } |
---|
1117 | break; |
---|
1118 | } |
---|
1119 | } |
---|
1120 | |
---|
1121 | void SDP_connection_list::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1122 | { |
---|
1123 | Charstring csHeader; |
---|
1124 | |
---|
1125 | csHeader.SetValue("c="); |
---|
1126 | csHeader.Encode(buffer); |
---|
1127 | } |
---|
1128 | |
---|
1129 | void SDP_connection_list::PostEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1130 | { |
---|
1131 | Charstring csCRLF; |
---|
1132 | csCRLF.SetValue("\r\n"); |
---|
1133 | |
---|
1134 | csCRLF.Encode(buffer); |
---|
1135 | } |
---|
1136 | |
---|
1137 | void SDP_key::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1138 | { |
---|
1139 | Charstring csColon; |
---|
1140 | csColon.SetValue(":"); |
---|
1141 | |
---|
1142 | if((field_id == id_key) && IsPresent(id_key)) { |
---|
1143 | csColon.Encode(buffer); |
---|
1144 | } |
---|
1145 | } |
---|
1146 | |
---|
1147 | void SDP_contact::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1148 | { |
---|
1149 | Charstring csLeftPar, csSpace; |
---|
1150 | csLeftPar.SetValue("("); |
---|
1151 | csSpace.SetValue(" "); |
---|
1152 | |
---|
1153 | if((field_id == id_disp_name) && IsPresent(id_disp_name)) { |
---|
1154 | csSpace.Encode(buffer); |
---|
1155 | csLeftPar.Encode(buffer); |
---|
1156 | } |
---|
1157 | } |
---|
1158 | |
---|
1159 | void SDP_contact::PostEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1160 | { |
---|
1161 | Charstring csRightPar; |
---|
1162 | csRightPar.SetValue(")"); |
---|
1163 | |
---|
1164 | if((field_id == id_disp_name) && IsPresent(id_disp_name)) { |
---|
1165 | csRightPar.Encode(buffer); |
---|
1166 | } |
---|
1167 | } |
---|
1168 | |
---|
1169 | void SDP_repeat_list::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1170 | { |
---|
1171 | Charstring csHeader; |
---|
1172 | |
---|
1173 | csHeader.SetValue("r="); |
---|
1174 | csHeader.Encode(buffer); |
---|
1175 | } |
---|
1176 | |
---|
1177 | void SDP_repeat_list::PostEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1178 | { |
---|
1179 | Charstring csCRLF; |
---|
1180 | csCRLF.SetValue("\r\n"); |
---|
1181 | |
---|
1182 | csCRLF.Encode(buffer); |
---|
1183 | } |
---|
1184 | |
---|
1185 | void SDP_repeat::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1186 | { |
---|
1187 | Charstring csSpace; |
---|
1188 | csSpace.SetValue(" "); |
---|
1189 | |
---|
1190 | if(field_id == id_active) { |
---|
1191 | csSpace.Encode(buffer); |
---|
1192 | } |
---|
1193 | } |
---|
1194 | |
---|
1195 | void SDP_typed_time_list::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1196 | { |
---|
1197 | Charstring csSpace; |
---|
1198 | csSpace.SetValue(" "); |
---|
1199 | |
---|
1200 | csSpace.Encode(buffer); |
---|
1201 | } |
---|
1202 | |
---|
1203 | void SDP_time_field::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1204 | { |
---|
1205 | Charstring csHeader; |
---|
1206 | |
---|
1207 | csHeader.SetValue("t="); |
---|
1208 | csHeader.Encode(buffer); |
---|
1209 | } |
---|
1210 | |
---|
1211 | void SDP_time_field::PostEncode (Buffer& buffer) throw (EncodeError) |
---|
1212 | { |
---|
1213 | Charstring csCRLF; |
---|
1214 | csCRLF.SetValue("\r\n"); |
---|
1215 | |
---|
1216 | csCRLF.Encode(buffer); |
---|
1217 | } |
---|
1218 | |
---|
1219 | void SDP_time_field::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1220 | { |
---|
1221 | Charstring csSpace; |
---|
1222 | csSpace.SetValue(" "); |
---|
1223 | |
---|
1224 | if(field_id == id_stop_time) { |
---|
1225 | csSpace.Encode(buffer); |
---|
1226 | } |
---|
1227 | } |
---|
1228 | |
---|
1229 | |
---|
1230 | |
---|
1231 | |
---|
1232 | |
---|
1233 | void SDP_attribute_cat::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1234 | { |
---|
1235 | Charstring csAttrName; |
---|
1236 | csAttrName.SetValue("cat:"); |
---|
1237 | |
---|
1238 | csAttrName.Encode(buffer); |
---|
1239 | } |
---|
1240 | |
---|
1241 | void SDP_attribute_keywds::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1242 | { |
---|
1243 | Charstring csAttrName; |
---|
1244 | csAttrName.SetValue("keywds:"); |
---|
1245 | |
---|
1246 | csAttrName.Encode(buffer); |
---|
1247 | } |
---|
1248 | |
---|
1249 | void SDP_attribute_tool::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1250 | { |
---|
1251 | Charstring csAttrName; |
---|
1252 | csAttrName.SetValue("tool:"); |
---|
1253 | |
---|
1254 | csAttrName.Encode(buffer); |
---|
1255 | } |
---|
1256 | |
---|
1257 | void SDP_attribute_ptime::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1258 | { |
---|
1259 | Charstring csAttrName; |
---|
1260 | csAttrName.SetValue("ptime:"); |
---|
1261 | |
---|
1262 | csAttrName.Encode(buffer); |
---|
1263 | } |
---|
1264 | |
---|
1265 | void SDP_attribute_recvonly::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1266 | { |
---|
1267 | Charstring csAttrName; |
---|
1268 | csAttrName.SetValue("recvonly"); |
---|
1269 | |
---|
1270 | csAttrName.Encode(buffer); |
---|
1271 | } |
---|
1272 | |
---|
1273 | void SDP_attribute_sendrecv::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1274 | { |
---|
1275 | Charstring csAttrName; |
---|
1276 | csAttrName.SetValue("sendrecv"); |
---|
1277 | |
---|
1278 | csAttrName.Encode(buffer); |
---|
1279 | } |
---|
1280 | |
---|
1281 | void SDP_attribute_sendonly::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1282 | { |
---|
1283 | Charstring csAttrName; |
---|
1284 | csAttrName.SetValue("sendonly"); |
---|
1285 | |
---|
1286 | csAttrName.Encode(buffer); |
---|
1287 | } |
---|
1288 | |
---|
1289 | void SDP_attribute_inactive::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1290 | { |
---|
1291 | Charstring csAttrName; |
---|
1292 | csAttrName.SetValue("inactive"); |
---|
1293 | |
---|
1294 | csAttrName.Encode(buffer); |
---|
1295 | } |
---|
1296 | |
---|
1297 | void SDP_attribute_orient::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1298 | { |
---|
1299 | Charstring csAttrName; |
---|
1300 | csAttrName.SetValue("orient:"); |
---|
1301 | |
---|
1302 | csAttrName.Encode(buffer); |
---|
1303 | } |
---|
1304 | |
---|
1305 | void SDP_attribute_type::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1306 | { |
---|
1307 | Charstring csAttrName; |
---|
1308 | csAttrName.SetValue("type:"); |
---|
1309 | |
---|
1310 | csAttrName.Encode(buffer); |
---|
1311 | } |
---|
1312 | |
---|
1313 | void SDP_attribute_charset::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1314 | { |
---|
1315 | Charstring csAttrName; |
---|
1316 | csAttrName.SetValue("charset:"); |
---|
1317 | |
---|
1318 | csAttrName.Encode(buffer); |
---|
1319 | } |
---|
1320 | |
---|
1321 | void SDP_attribute_sdplang::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1322 | { |
---|
1323 | Charstring csAttrName; |
---|
1324 | csAttrName.SetValue("sdplang:"); |
---|
1325 | |
---|
1326 | csAttrName.Encode(buffer); |
---|
1327 | } |
---|
1328 | |
---|
1329 | void SDP_attribute_lang::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1330 | { |
---|
1331 | Charstring csAttrName; |
---|
1332 | csAttrName.SetValue("lang:"); |
---|
1333 | |
---|
1334 | csAttrName.Encode(buffer); |
---|
1335 | } |
---|
1336 | |
---|
1337 | void SDP_attribute_framerate::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1338 | { |
---|
1339 | Charstring csAttrName; |
---|
1340 | csAttrName.SetValue("framerate:"); |
---|
1341 | |
---|
1342 | csAttrName.Encode(buffer); |
---|
1343 | } |
---|
1344 | |
---|
1345 | void SDP_attribute_quality::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1346 | { |
---|
1347 | Charstring csAttrName; |
---|
1348 | csAttrName.SetValue("quality:"); |
---|
1349 | |
---|
1350 | csAttrName.Encode(buffer); |
---|
1351 | } |
---|
1352 | |
---|
1353 | void SDP_attribute_fmtp::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1354 | { |
---|
1355 | Charstring csAttrName; |
---|
1356 | csAttrName.SetValue("fmtp:"); |
---|
1357 | |
---|
1358 | csAttrName.Encode(buffer); |
---|
1359 | } |
---|
1360 | |
---|
1361 | void SDP_attribute_curr::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1362 | { |
---|
1363 | Charstring csAttrName; |
---|
1364 | csAttrName.SetValue("curr:"); |
---|
1365 | |
---|
1366 | csAttrName.Encode(buffer); |
---|
1367 | } |
---|
1368 | |
---|
1369 | void SDP_attribute_curr::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1370 | { |
---|
1371 | Charstring csSpace; |
---|
1372 | csSpace.SetValue(" "); |
---|
1373 | |
---|
1374 | if(field_id != 0) { |
---|
1375 | csSpace.Encode(buffer); |
---|
1376 | } |
---|
1377 | } |
---|
1378 | |
---|
1379 | void SDP_attribute_des::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1380 | { |
---|
1381 | Charstring csAttrName; |
---|
1382 | csAttrName.SetValue("des:"); |
---|
1383 | |
---|
1384 | csAttrName.Encode(buffer); |
---|
1385 | } |
---|
1386 | |
---|
1387 | void SDP_attribute_des::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1388 | { |
---|
1389 | Charstring csSpace; |
---|
1390 | csSpace.SetValue(" "); |
---|
1391 | |
---|
1392 | if(field_id != 0) { |
---|
1393 | csSpace.Encode(buffer); |
---|
1394 | } |
---|
1395 | } |
---|
1396 | |
---|
1397 | void SDP_attribute_conf::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1398 | { |
---|
1399 | Charstring csAttrName; |
---|
1400 | csAttrName.SetValue("conf:"); |
---|
1401 | |
---|
1402 | csAttrName.Encode(buffer); |
---|
1403 | } |
---|
1404 | |
---|
1405 | void SDP_attribute_conf::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1406 | { |
---|
1407 | Charstring csSpace; |
---|
1408 | csSpace.SetValue(" "); |
---|
1409 | |
---|
1410 | if(field_id != 0) { |
---|
1411 | csSpace.Encode(buffer); |
---|
1412 | } |
---|
1413 | } |
---|
1414 | |
---|
1415 | void SDP_attribute_rtpmap::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1416 | { |
---|
1417 | Charstring csAttrName; |
---|
1418 | csAttrName.SetValue("rtpmap:"); |
---|
1419 | |
---|
1420 | csAttrName.Encode(buffer); |
---|
1421 | } |
---|
1422 | |
---|
1423 | void SDP_attribute_rtcp::PreEncode (Buffer& buffer) throw (EncodeError) |
---|
1424 | { |
---|
1425 | Charstring csAttrName; |
---|
1426 | csAttrName.SetValue("rtcp:"); |
---|
1427 | |
---|
1428 | csAttrName.Encode(buffer); |
---|
1429 | } |
---|
1430 | |
---|
1431 | void SDP_attribute_unknown::PreEncodeField (int field_id, Buffer& buffer) throw (EncodeError) |
---|
1432 | { |
---|
1433 | Charstring csColon; |
---|
1434 | csColon.SetValue(":"); |
---|
1435 | |
---|
1436 | if((field_id == id_attr_value) && IsPresent(id_attr_value)) { |
---|
1437 | csColon.Encode(buffer); |
---|
1438 | } |
---|
1439 | } |
---|
1440 | |
---|
1441 | |
---|
1442 | |
---|
1443 | |
---|
1444 | }} // namespaces |
---|
1445 | |
---|