place to put parse functions

functions/imap_parse.php

@@ -0,0 +1,348 @@
+<?php
+
+function sqimap_parse_RFC822Header ($read, $hdr) {
+  $i = 0;
+  /* Set up some defaults */
+  $hdr->type0 = "text";
+  $hdr->type1 = "plain";
+  $hdr->charset = "us-ascii";
+
+  $count = count($read);
+  while ($i < $count) {
+     /* unfold multi-line headers */
+     while (($i + 1 < $count) && (strspn($read[$i + 1], "\t ") > 0) ) {
+        $read[$i + 1] = substr($read[$i], 0, -2) . ' ' . ltrim($read[$i+1]);
+        array_splice($read, $i, 1);
+        $count--;
+     }
+     $line = $read[$i];
+     $c = strtolower($line{0});
+     switch ($c) {
+       case 'm':
+         $c2 = strtolower($line{1});
+         switch ($c2) {
+           case 'i':
+             if (substr($line, 0, 17) == "MIME-Version: 1.0") {
+	        $hdr->mime = true;
+             }
+	     $i++;
+             break;
+           case 'e': 
+             /* MESSAGE ID */
+             if (strtolower(substr($line, 0, 11)) == "message-id:") {
+	        $hdr->message_id = trim(substr($line, 11));
+    	     }
+	     $i++;
+	     break;
+	  default:
+	     $i++;    
+	     break;
+	 }   
+	 break;
+       case 'c':
+         $c2 = strtolower($line{1});
+         switch ($c2) {
+	   case 'o': 
+	     /* Content-Transfer-Encoding */
+    	     if (substr(strtolower($line), 0, 26) == "content-transfer-encoding:") {
+        	$hdr->encoding = strtolower(trim(substr($line, 26)));
+        	$i++;
+    	     }
+    	     /* Content-Type */
+    	     else if (strtolower(substr($line, 0, 13)) == "content-type:") {
+    		$cont = strtolower(trim(substr($line, 13)));
+        	if (strpos($cont, ";")) {
+            	   $cont = substr($cont, 0, strpos($cont, ";"));
+        	}
+        	if (strpos($cont, "/")) {
+            	   $hdr->type0 = substr($cont, 0, strpos($cont, "/"));
+            	   $hdr->type1 = substr($cont, strpos($cont, "/")+1);
+        	} else {
+            	   $hdr->type0 = $cont;
+        	}
+        	$line = $read[$i];
+        	$i++;
+        	while ( (substr(substr($read[$i], 0, strpos($read[$i], " ")), -1) != ":") && (trim($read[$i]) != "") && (trim($read[$i]) != ")")) {
+            	   str_replace("\n", "", $line);
+            	   str_replace("\n", "", $read[$i]);
+            	   $line = "$line $read[$i]";
+            	   $i++;
+        	}
+
+        	/* Detect the boundary of a multipart message */
+        	if (eregi('boundary="([^"]+)"', $line, $regs)) {
+            	   $hdr->boundary = $regs[1];
+        	}
+
+        	/* Detect the charset */
+        	if (strpos(strtolower(trim($line)), "charset=")) {
+            	   $pos = strpos($line, "charset=") + 8;
+            	   $charset = trim($line);
+            	   if (strpos($line, ";", $pos) > 0) {
+                      $charset = substr($charset, $pos, strpos($line, ";", $pos)-$pos);
+            	   } else {
+                      $charset = substr($charset, $pos);
+            	   }
+            	   $charset = str_replace("\"", "", $charset);
+            	   $hdr->charset = $charset;
+        	} else {
+            	   $hdr->charset = "us-ascii";
+        	}
+		/* Detect type in case of multipart/related */
+		if (strpos(strtolower(trim($line)), "type=")) {
+		   $pos = strpos($line, "type=") + 6;
+		   $type = trim($line);
+            	   if (strpos($line, ";", $pos) > 0) {
+                      $type = substr($type, $pos, strpos($line, ";", $pos)-$pos);
+            	   } else {
+                      $type = substr($type, $pos);
+            	   }
+		   $hdr->type = $type;
+		}
+    	     }
+    	     else if (strtolower(substr($line, 0, 20)) == "content-disposition:") {
+                /* Add better content-disposition support */
+                $i++;
+                while ( (substr(substr($read[$i], 0, strpos($read[$i], " ")), -1) != ":") && (trim($read[$i]) != "") && (trim($read[$i]) != ")")) {
+                   str_replace("\n", "", $line);
+                   str_replace("\n", "", $read[$i]);
+                   $line = "$line $read[$i]";
+                   $i++;
+        	}
+
+        	/* Detects filename if any */
+        	if (strpos(strtolower(trim($line)), "filename=")) {
+            	   $pos = strpos($line, "filename=") + 9;
+            	   $name = trim($line);
+            	   if (strpos($line, " ", $pos) > 0) {
+                      $name = substr($name, $pos, strpos($line, " ", $pos));
+            	   } else {
+                      $name = substr($name, $pos);
+            	   }
+            	   $name = str_replace("\"", "", $name);
+            	   $hdr->filename = $name;
+        	}
+    	     } else $i++;
+	     break;
+	   case 'c': /* Cc */
+    	     if (strtolower(substr($line, 0, 3)) == "cc:") {
+        	$hdr->cc = sqimap_parse_address(trim(substr($line, 9, strlen($line) - 10)), true);
+    	     }
+	     $i++;
+	     break;
+	   default:
+	     $i++;    
+	     break;
+	 }
+         break;
+       case 'r': /* Reply-To */
+         if (strtolower(substr($line, 0, 9)) == "reply-to:") {
+            $hdr->replyto = sqimap_parse_address(trim(substr($line, 9, strlen($line) - 10)), false);
+    	 }
+	 $i++;
+	 break;
+       case 'f': /* From */
+    	 if (strtolower(substr($line, 0, 5)) == "from:") {
+	    $hdr->from=sqimap_parse_address(trim(substr($line, 5, strlen($line) - 6)), false);
+    	    if (! isset($hdr->replyto) || $hdr->replyto == "") {
+               $hdr->replyto = $hdr->from;
+            }
+    	 }
+	 $i++;
+	 break;
+       case 'd':
+         $c2 = strtolower($line{1});
+	 switch ($c2) {
+	   case 'a': /* Date */
+             if (strtolower(substr($line, 0, 5)) == "date:") {
+                $d = substr($read[$i], 5);
+                $d = trim($d);
+                $d = strtr($d, array('  ' => ' '));
+                $d = explode(' ', $d);
+                $hdr->date = getTimeStamp($d);
+             }
+	     $i++;
+             break;
+	   case 'i': /* Disposition-Notification-To */
+             if (strtolower(substr($line, 0, 28)) == "disposition-notification-to:") {
+	        $dnt = trim(substr($read[$i], 28));
+	        $hdr->disposition = sqimap_parse_address($dnt, false);
+	     }
+	     $i++;
+	     break;
+	   default:
+	     $i++;
+	     break;
+	 }
+	 break;		      
+       case 's':
+         /* SUBJECT */
+         if (strtolower(substr($line, 0, 8)) == "subject:") {
+            $hdr->subject = trim(substr($line, 8, strlen($line) - 9));
+            if (strlen(Chop($hdr->subject)) == 0) {
+               $hdr->subject = _("(no subject)");
+            }
+         }
+	 $i++;
+         break;
+       case 'b':
+         /* BCC */
+         if (strtolower(substr($line, 0, 4)) == "bcc:") {
+            $hdr->bcc = sqimap_parse_address(trim(substr($line, 4, strlen($line) - 5)), true);
+         }
+	 $i++;
+         break;
+       case 't':
+         /* TO */
+        if (strtolower(substr($line, 0, 3)) == "to:") {
+           $hdr->to = sqimap_parse_address(trim(substr($line, 3, strlen($line) - 4)), true);
+        }
+	$i++;
+        break;
+      case ')':
+        /* ERROR CORRECTION */
+        if (strlen(trim($hdr->subject)) == 0) {
+           $hdr->subject = _("(no subject)");
+        }
+        if (strlen(trim($hdr->from)) == 0) {
+           $hdr->from = _("(unknown sender)");
+        }
+        if (strlen(trim($hdr->date)) == 0) {
+           $hdr->date = time();
+        }
+        $i++;
+        break;
+      case 'x':
+        /* X-PRIORITY */
+        if (strtolower(substr($line, 0, 11)) == "x-priority:") {
+    	   $hdr->priority = trim(substr($line, 11));
+        } 
+        $i++;
+	break;
+      default:
+        $i++;
+        break;
+     }
+  }
+  return $hdr;
+}
+
+/**
+ * function to process addresses.
+ */
+function sqimap_parse_address($address, $ar, $addr_ar = array(), $group = '') {
+  $pos = 0;
+  $j = strlen( $address );
+  $name = '';
+  $addr = '';
+
+  while ( $pos < $j ) {
+     if ($address{$pos} == '"') { /* get the personal name */
+        $pos++;
+        while ( $address{$pos} != '"' &&
+                $pos < $j ) {
+           if (substr($address, $pos, 2) == '\\"') {
+	      $name .= $address{$pos};
+              $pos++;
+           } elseif (substr($address, $pos, 2) == '\\\\') {
+	      $name .= $address{$pos};
+              $pos++;
+           }
+           $name .= $address{$pos};
+           $pos++;
+        }
+     } elseif ($address{$pos} == '<') { /* get email address */
+        $addr_start=$pos;
+        $pos++;
+        while ( $address{$pos} != '>' &&
+                $pos < $j ) {
+	   $addr .= $address{$pos};	
+           $pos++;
+        }
+     } elseif ($address{$pos} == '(') { /* rip off comments */
+        $addr_start=$pos;
+        $pos++;
+        while ( $address{$pos} != ')' &&
+                $pos < $j ) {
+	   $addr .= $address{$pos};	
+           $pos++;
+        }
+	$address_start = substr($address,0,$addr_start);
+	$address_end = substr($address,$pos+1);
+	$address = $address_start . $address_end; 
+	$j = strlen( $address );
+	$pos = $addr_start;
+     } elseif ( $address{$pos} == ',' ) { /* we reached a delimiter */
+        if ($addr == '') {
+	    $addr = substr($address,0,$pos);
+	} elseif ($name == '') {
+	    $name = substr($address,0,$addr_start);
+	}
+	$at = strpos($addr, '@');
+	$addr_structure = new address_structure();
+	$addr_structure->personal = $name;
+	$addr_structure->group = $group;
+
+	if ($at) {
+	    $addr_structure->mailbox = substr($addr,0,$at);
+	    $addr_structure->host = substr($addr,$at+1);
+	} else  {
+	    $addr_structure->mailbox = $addr;
+	}
+	$address = substr($address,$pos+1);
+	$j = strlen( $address );
+	$pos = 0;
+        $name = '';
+        $addr = '';
+        $addr_ar[] = $addr_structure;
+	
+     } elseif ( $address{$pos} == ":" ) { /* process the group addresses */
+        /* group marker */
+        $group = substr($address,0,$pos);
+	$address = substr($address,$pos+1);
+        $result = sqimap_parse_address($address, $ar, $addr_ar, $group);
+	$addr_ar = $result[0];
+	$pos = $result[1];
+	$address = substr($address,$pos);
+	$j = strlen( $address );	
+	$group = '';
+     } elseif ($address{$pos} == ';' && $group ) {
+        $address = substr($address, 0, $pos-1);
+        break;
+     }	     
+     $pos++;
+  }
+  if ($addr == '') {
+     $addr = substr($address,0,$pos);
+  } elseif ($name == '') {
+     $name = substr($address,0,$addr_start);
+  }
+  $at = strpos($addr, '@');
+  $addr_structure = new address_structure();
+  $addr_structure->group = $group;
+  if ($at) {
+     $addr_structure->mailbox = trim(substr($addr,0,$at));
+     $addr_structure->host = trim(substr($addr,$at+1));
+  } else {
+     $addr_structure->mailbox = trim($addr);
+  }
+
+  if ($group && $addr == '') { /* no addresses found in group */
+     $name = "$group: Undisclosed recipients;";
+     $addr_structure->personal = $name;
+     $addr_ar[] = $addr_structure;     
+     return (array($addr_ar,$pos+1)); 
+  } else {
+      $addr_structure->personal = $name;
+      if ($name || $addr) {
+         $addr_ar[] = $addr_structure;
+      } 
+  }
+  if ($ar) {
+    return ($addr_ar);
+  } else {
+    return ($addr_ar[0]);
+  }          
+
+}
+?>