| 1 | <?php |
| 2 | |
| 3 | function sqimap_parse_RFC822Header ($read, $hdr) { |
| 4 | $i = 0; |
| 5 | /* Set up some defaults */ |
| 6 | $hdr->type0 = "text"; |
| 7 | $hdr->type1 = "plain"; |
| 8 | $hdr->charset = "us-ascii"; |
| 9 | |
| 10 | $count = count($read); |
| 11 | while ($i < $count) { |
| 12 | /* unfold multi-line headers */ |
| 13 | while (($i + 1 < $count) && (strspn($read[$i + 1], "\t ") > 0) ) { |
| 14 | $read[$i + 1] = substr($read[$i], 0, -2) . ' ' . ltrim($read[$i+1]); |
| 15 | array_splice($read, $i, 1); |
| 16 | $count--; |
| 17 | } |
| 18 | $line = $read[$i]; |
| 19 | $c = strtolower($line{0}); |
| 20 | switch ($c) { |
| 21 | case 'm': |
| 22 | $c2 = strtolower($line{1}); |
| 23 | switch ($c2) { |
| 24 | case 'i': |
| 25 | if (substr($line, 0, 17) == "MIME-Version: 1.0") { |
| 26 | $hdr->mime = true; |
| 27 | } |
| 28 | $i++; |
| 29 | break; |
| 30 | case 'e': |
| 31 | /* MESSAGE ID */ |
| 32 | if (strtolower(substr($line, 0, 11)) == "message-id:") { |
| 33 | $hdr->message_id = trim(substr($line, 11)); |
| 34 | } |
| 35 | $i++; |
| 36 | break; |
| 37 | default: |
| 38 | $i++; |
| 39 | break; |
| 40 | } |
| 41 | break; |
| 42 | case 'c': |
| 43 | $c2 = strtolower($line{1}); |
| 44 | switch ($c2) { |
| 45 | case 'o': |
| 46 | /* Content-Transfer-Encoding */ |
| 47 | if (substr(strtolower($line), 0, 26) == "content-transfer-encoding:") { |
| 48 | $hdr->encoding = strtolower(trim(substr($line, 26))); |
| 49 | $i++; |
| 50 | } |
| 51 | /* Content-Type */ |
| 52 | else if (strtolower(substr($line, 0, 13)) == "content-type:") { |
| 53 | $cont = strtolower(trim(substr($line, 13))); |
| 54 | if (strpos($cont, ";")) { |
| 55 | $cont = substr($cont, 0, strpos($cont, ";")); |
| 56 | } |
| 57 | if (strpos($cont, "/")) { |
| 58 | $hdr->type0 = substr($cont, 0, strpos($cont, "/")); |
| 59 | $hdr->type1 = substr($cont, strpos($cont, "/")+1); |
| 60 | } else { |
| 61 | $hdr->type0 = $cont; |
| 62 | } |
| 63 | $line = $read[$i]; |
| 64 | $i++; |
| 65 | while ( (substr(substr($read[$i], 0, strpos($read[$i], " ")), -1) != ":") && (trim($read[$i]) != "") && (trim($read[$i]) != ")")) { |
| 66 | str_replace("\n", "", $line); |
| 67 | str_replace("\n", "", $read[$i]); |
| 68 | $line = "$line $read[$i]"; |
| 69 | $i++; |
| 70 | } |
| 71 | |
| 72 | /* Detect the boundary of a multipart message */ |
| 73 | if (eregi('boundary="([^"]+)"', $line, $regs)) { |
| 74 | $hdr->boundary = $regs[1]; |
| 75 | } |
| 76 | |
| 77 | /* Detect the charset */ |
| 78 | if (strpos(strtolower(trim($line)), "charset=")) { |
| 79 | $pos = strpos($line, "charset=") + 8; |
| 80 | $charset = trim($line); |
| 81 | if (strpos($line, ";", $pos) > 0) { |
| 82 | $charset = substr($charset, $pos, strpos($line, ";", $pos)-$pos); |
| 83 | } else { |
| 84 | $charset = substr($charset, $pos); |
| 85 | } |
| 86 | $charset = str_replace("\"", "", $charset); |
| 87 | $hdr->charset = $charset; |
| 88 | } else { |
| 89 | $hdr->charset = "us-ascii"; |
| 90 | } |
| 91 | /* Detect type in case of multipart/related */ |
| 92 | if (strpos(strtolower(trim($line)), "type=")) { |
| 93 | $pos = strpos($line, "type=") + 6; |
| 94 | $type = trim($line); |
| 95 | if (strpos($line, ";", $pos) > 0) { |
| 96 | $type = substr($type, $pos, strpos($line, ";", $pos)-$pos); |
| 97 | } else { |
| 98 | $type = substr($type, $pos); |
| 99 | } |
| 100 | $hdr->type = $type; |
| 101 | } |
| 102 | } |
| 103 | else if (strtolower(substr($line, 0, 20)) == "content-disposition:") { |
| 104 | /* Add better content-disposition support */ |
| 105 | $i++; |
| 106 | while ( (substr(substr($read[$i], 0, strpos($read[$i], " ")), -1) != ":") && (trim($read[$i]) != "") && (trim($read[$i]) != ")")) { |
| 107 | str_replace("\n", "", $line); |
| 108 | str_replace("\n", "", $read[$i]); |
| 109 | $line = "$line $read[$i]"; |
| 110 | $i++; |
| 111 | } |
| 112 | |
| 113 | /* Detects filename if any */ |
| 114 | if (strpos(strtolower(trim($line)), "filename=")) { |
| 115 | $pos = strpos($line, "filename=") + 9; |
| 116 | $name = trim($line); |
| 117 | if (strpos($line, " ", $pos) > 0) { |
| 118 | $name = substr($name, $pos, strpos($line, " ", $pos)); |
| 119 | } else { |
| 120 | $name = substr($name, $pos); |
| 121 | } |
| 122 | $name = str_replace("\"", "", $name); |
| 123 | $hdr->filename = $name; |
| 124 | } |
| 125 | } else $i++; |
| 126 | break; |
| 127 | case 'c': /* Cc */ |
| 128 | if (strtolower(substr($line, 0, 3)) == "cc:") { |
| 129 | $hdr->cc = sqimap_parse_address(trim(substr($line, 3, strlen($line) - 4)), true); |
| 130 | } |
| 131 | $i++; |
| 132 | break; |
| 133 | default: |
| 134 | $i++; |
| 135 | break; |
| 136 | } |
| 137 | break; |
| 138 | case 'r': /* Reply-To */ |
| 139 | if (strtolower(substr($line, 0, 9)) == "reply-to:") { |
| 140 | $hdr->replyto = sqimap_parse_address(trim(substr($line, 9, strlen($line) - 10)), false); |
| 141 | } |
| 142 | $i++; |
| 143 | break; |
| 144 | case 'f': /* From */ |
| 145 | if (strtolower(substr($line, 0, 5)) == "from:") { |
| 146 | $hdr->from=sqimap_parse_address(trim(substr($line, 5, strlen($line) - 6)), false); |
| 147 | if (! isset($hdr->replyto) || $hdr->replyto == "") { |
| 148 | $hdr->replyto = $hdr->from; |
| 149 | } |
| 150 | } |
| 151 | $i++; |
| 152 | break; |
| 153 | case 'd': |
| 154 | $c2 = strtolower($line{1}); |
| 155 | switch ($c2) { |
| 156 | case 'a': /* Date */ |
| 157 | if (strtolower(substr($line, 0, 5)) == "date:") { |
| 158 | $d = substr($read[$i], 5); |
| 159 | $d = trim($d); |
| 160 | $d = strtr($d, array(' ' => ' ')); |
| 161 | $d = explode(' ', $d); |
| 162 | $hdr->date = getTimeStamp($d); |
| 163 | } |
| 164 | $i++; |
| 165 | break; |
| 166 | case 'i': /* Disposition-Notification-To */ |
| 167 | if (strtolower(substr($line, 0, 28)) == "disposition-notification-to:") { |
| 168 | $dnt = trim(substr($read[$i], 28)); |
| 169 | $hdr->dnt = sqimap_parse_address($dnt, false); |
| 170 | } |
| 171 | $i++; |
| 172 | break; |
| 173 | default: |
| 174 | $i++; |
| 175 | break; |
| 176 | } |
| 177 | break; |
| 178 | case 's': |
| 179 | /* SUBJECT */ |
| 180 | if (strtolower(substr($line, 0, 8)) == "subject:") { |
| 181 | $hdr->subject = trim(substr($line, 8, strlen($line) - 9)); |
| 182 | if (strlen(Chop($hdr->subject)) == 0) { |
| 183 | $hdr->subject = _("(no subject)"); |
| 184 | } |
| 185 | } |
| 186 | $i++; |
| 187 | break; |
| 188 | case 'b': |
| 189 | /* BCC */ |
| 190 | if (strtolower(substr($line, 0, 4)) == "bcc:") { |
| 191 | $hdr->bcc = sqimap_parse_address(trim(substr($line, 4, strlen($line) - 5)), true); |
| 192 | } |
| 193 | $i++; |
| 194 | break; |
| 195 | case 't': |
| 196 | /* TO */ |
| 197 | if (strtolower(substr($line, 0, 3)) == "to:") { |
| 198 | $hdr->to = sqimap_parse_address(trim(substr($line, 3, strlen($line) - 4)), true); |
| 199 | } |
| 200 | $i++; |
| 201 | break; |
| 202 | case ')': |
| 203 | /* ERROR CORRECTION */ |
| 204 | if (strlen(trim($hdr->subject)) == 0) { |
| 205 | $hdr->subject = _("(no subject)"); |
| 206 | } |
| 207 | if (!is_object($hdr->from) && strlen(trim($hdr->from)) == 0) { |
| 208 | $hdr->from = _("(unknown sender)"); |
| 209 | } |
| 210 | if (strlen(trim($hdr->date)) == 0) { |
| 211 | $hdr->date = time(); |
| 212 | } |
| 213 | $i++; |
| 214 | break; |
| 215 | case 'x': |
| 216 | /* X-PRIORITY */ |
| 217 | if (strtolower(substr($line, 0, 11)) == 'x-priority:') { |
| 218 | $hdr->priority = trim(substr($line, 11)); |
| 219 | } else if (strtolower(substr($line,0,9)) == 'x-mailer:') { |
| 220 | $hdr->xmailer = trim(substr($line, 9)); |
| 221 | } |
| 222 | $i++; |
| 223 | break; |
| 224 | case 'u': |
| 225 | /* User-Agent */ |
| 226 | if (strtolower(substr($line,0,10)) == 'user-agent') { |
| 227 | $hdr->xmailer = trim(substr($line, 10)); |
| 228 | } |
| 229 | $i++; |
| 230 | break; |
| 231 | default: |
| 232 | $i++; |
| 233 | break; |
| 234 | } |
| 235 | } |
| 236 | return $hdr; |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * function to process addresses. |
| 241 | */ |
| 242 | function sqimap_parse_address($address, $ar, $addr_ar = array(), $group = '') { |
| 243 | $pos = 0; |
| 244 | $j = strlen( $address ); |
| 245 | $name = ''; |
| 246 | $addr = ''; |
| 247 | |
| 248 | while ( $pos < $j ) { |
| 249 | if ($address{$pos} == '"') { /* get the personal name */ |
| 250 | $pos++; |
| 251 | while ( $address{$pos} != '"' && |
| 252 | $pos < $j ) { |
| 253 | if (substr($address, $pos, 2) == '\\"') { |
| 254 | $name .= $address{$pos}; |
| 255 | $pos++; |
| 256 | } elseif (substr($address, $pos, 2) == '\\\\') { |
| 257 | $name .= $address{$pos}; |
| 258 | $pos++; |
| 259 | } |
| 260 | $name .= $address{$pos}; |
| 261 | $pos++; |
| 262 | } |
| 263 | } elseif ($address{$pos} == '<') { /* get email address */ |
| 264 | $addr_start=$pos; |
| 265 | $pos++; |
| 266 | while ( $address{$pos} != '>' && |
| 267 | $pos < $j ) { |
| 268 | $addr .= $address{$pos}; |
| 269 | $pos++; |
| 270 | } |
| 271 | } elseif ($address{$pos} == '(') { /* rip off comments */ |
| 272 | $addr_start=$pos; |
| 273 | $pos++; |
| 274 | while ( $address{$pos} != ')' && |
| 275 | $pos < $j ) { |
| 276 | $addr .= $address{$pos}; |
| 277 | $pos++; |
| 278 | } |
| 279 | $address_start = substr($address,0,$addr_start); |
| 280 | $address_end = substr($address,$pos+1); |
| 281 | $address = $address_start . $address_end; |
| 282 | $j = strlen( $address ); |
| 283 | $pos = $addr_start; |
| 284 | } elseif ( $address{$pos} == ',' ) { /* we reached a delimiter */ |
| 285 | if ($addr == '') { |
| 286 | $addr = substr($address,0,$pos); |
| 287 | } elseif ($name == '') { |
| 288 | $name = substr($address,0,$addr_start); |
| 289 | } |
| 290 | $at = strpos($addr, '@'); |
| 291 | $addr_structure = new AddressStructure(); |
| 292 | $addr_structure->personal = $name; |
| 293 | $addr_structure->group = $group; |
| 294 | |
| 295 | if ($at) { |
| 296 | $addr_structure->mailbox = substr($addr,0,$at); |
| 297 | $addr_structure->host = substr($addr,$at+1); |
| 298 | } else { |
| 299 | $addr_structure->mailbox = $addr; |
| 300 | } |
| 301 | $address = substr($address,$pos+1); |
| 302 | $j = strlen( $address ); |
| 303 | $pos = 0; |
| 304 | $name = ''; |
| 305 | $addr = ''; |
| 306 | $addr_ar[] = $addr_structure; |
| 307 | |
| 308 | } elseif ( $address{$pos} == ":" ) { /* process the group addresses */ |
| 309 | /* group marker */ |
| 310 | $group = substr($address,0,$pos); |
| 311 | $address = substr($address,$pos+1); |
| 312 | $result = sqimap_parse_address($address, $ar, $addr_ar, $group); |
| 313 | $addr_ar = $result[0]; |
| 314 | $pos = $result[1]; |
| 315 | $address = substr($address,$pos); |
| 316 | $j = strlen( $address ); |
| 317 | $group = ''; |
| 318 | } elseif ($address{$pos} == ';' && $group ) { |
| 319 | $address = substr($address, 0, $pos-1); |
| 320 | break; |
| 321 | } |
| 322 | $pos++; |
| 323 | } |
| 324 | if ($addr == '') { |
| 325 | $addr = substr($address,0,$pos); |
| 326 | } elseif ($name == '') { |
| 327 | $name = substr($address,0,$addr_start); |
| 328 | } |
| 329 | $at = strpos($addr, '@'); |
| 330 | $addr_structure = new AddressStructure(); |
| 331 | $addr_structure->group = $group; |
| 332 | if ($at) { |
| 333 | $addr_structure->mailbox = trim(substr($addr,0,$at)); |
| 334 | $addr_structure->host = trim(substr($addr,$at+1)); |
| 335 | } else { |
| 336 | $addr_structure->mailbox = trim($addr); |
| 337 | } |
| 338 | |
| 339 | if ($group && $addr == '') { /* no addresses found in group */ |
| 340 | $name = "$group: Undisclosed recipients;"; |
| 341 | $addr_structure->personal = $name; |
| 342 | $addr_ar[] = $addr_structure; |
| 343 | return (array($addr_ar,$pos+1)); |
| 344 | } else { |
| 345 | $addr_structure->personal = $name; |
| 346 | if ($name || $addr) { |
| 347 | $addr_ar[] = $addr_structure; |
| 348 | } |
| 349 | } |
| 350 | if ($ar) { |
| 351 | return ($addr_ar); |
| 352 | } else { |
| 353 | return ($addr_ar[0]); |
| 354 | } |
| 355 | |
| 356 | } |
| 357 | ?> |