📄 mailcap.c
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/* * $Id: Mailcap.C,v 1.4 2001/03/29 09:44:25 evgeny Exp $ * * Copyright (c) 1994 HAL Computer Systems International, Ltd. * * HAL COMPUTER SYSTEMS INTERNATIONAL, LTD. * 1315 Dell Avenue * Campbell, CA 95008 * * Author: Greg Hilton * Contributors: Tom Lang, Frank Bieser, and others * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * http://www.gnu.org/copyleft/gpl.html * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */#include <config.h>#include "IshAppC.h"#include "Mailcap.h"#include "Misc.h"#include "MsgPartC.h"#include "MsgC.h"#include "SafeSystem.h"#include "ParamC.h"#include <hgl/StrCase.h>#include <hgl/CallbackC.h>#include <hgl/RegexC.h>#include <hgl/CharC.h>#include <unistd.h>#include <stdio.h>#include <string.h>#include <stdlib.h>#include <ctype.h>#include <errno.h>#include <time.h>#include <sys/stat.h> // For statMailcapFileC *MailcapFiles = NULL;time_t mailcapReadTime = 0;static StringC *mailcapPath = NULL;const char *defMailcapPath = "$HOME/.mailcap:/etc/mailcap:/usr/etc/mailcap:/usr/local/etc/mailcap";extern int debuglev;/*--------------------------------------------------------------- * Method to return a pointer to the requested parameter */static ParamC*Param(CharC key, ParamC *list){//// Loop through list// ParamC *param; for ( param=list; param; param=param->next ) if ( param->key.Equals(key, IGNORE_CASE) ) return param; return NULL;} // End Param/*----------------------------------------------------------------------- * Function to perform substitutions in mailcap commands */StringCBuildCommand(StringC cmdStr, CharC file, CharC enc, CharC type, ParamC *params, CharC user, CharC pass){//// Make the following substitutions://// %% ==> %// %s ==> file name// %e ==> encoding string// %t ==> type string// %{param} ==> parameter value// static RegexC *percPat = NULL; static RegexC *parmPat = NULL; if ( !percPat ) percPat = new RegexC("%[%set{]"); if ( !parmPat ) parmPat = new RegexC("%{\\([^}]+\\)}"); Boolean gotFile = False; int pos = 0; while ( (pos=percPat->search(cmdStr, pos)) >= 0 ) { char c = cmdStr[pos+1]; RangeC range = (*percPat)[0]; switch (c) { case '%': cmdStr(range) = "%"; pos++; break; case 's': // File name if ( file.Length() > 0 ) { cmdStr(range) = file; pos += file.Length(); gotFile = True; } else pos += range.length(); break; case 'e': // Encoding if ( enc.Length() > 0 ) { cmdStr(range) = enc; pos += enc.Length(); } else pos += range.length(); break; case 't': // Type if ( type.Length() > 0 ) { cmdStr(range) = type; pos += type.Length(); } else pos += range.length(); break; case '{': if ( parmPat->match(cmdStr, pos) ) {//// Look up the parameter// range = (*parmPat)[1]; CharC key = cmdStr(range); ParamC *param = Param(key, params); StringC val;//// If it wasn't found, check for the special cases of "ruser" and "rpwd"// used in the ftp command// if ( !param ) { if ( user.Length() >0 && key.Equals("ruser", IGNORE_CASE) ) val = user; else if ( pass.Length()>0 && key.Equals("rpwd", IGNORE_CASE) ) {//// Encode the password so it doesn't accidently show up in clear text. In// 'tr' format, here is the encoding://// tr '\050-\172' '\060-\172\050-\057'// val = pass; char *vp = val; for (int i=0; i<val.size(); i++, vp++) { if ( *vp >= '\050' && *vp <= '\172' ) { *vp += '\010'; if ( *vp > '\172' ) *vp = '\050' + (*vp - '\173'); } } } // End if need password } // End if parameter not found else val = param->val;//// Substitute the parameter value// //if ( val.size() > 0 ) { range = (*parmPat)[0]; cmdStr(range) = val; pos += val.size(); //} //else //pos += range.length(); } // End if parameter pattern found break; } // End switch character } // End for each percent pattern//// If we didn't add the file name, we have to pipe it through stdin.// if ( !gotFile ) { StringC pipeStr = "cat "; pipeStr += file; pipeStr += " | "; cmdStr = pipeStr + cmdStr; } return cmdStr;} // End BuildCommand/*----------------------------------------------------------------------- * Function to perform substitutions in mailcap commands */StringCBuildCommand(StringC cmdStr, MsgPartC *part, CharC file){//// Make the following substitutions://// %% ==> %// %s ==> file name// %e ==> encoding string// %t ==> type string// %{param} ==> parameter value// static RegexC *percPat = NULL; static RegexC *parmPat = NULL; if ( !percPat ) percPat = new RegexC("%[%set{]"); if ( !parmPat ) parmPat = new RegexC("%{\\([^}]+\\)}"); Boolean gotFile = False; int pos = 0; while ( (pos=percPat->search(cmdStr, pos)) >= 0 ) { char c = cmdStr[pos+1]; RangeC range = (*percPat)[0]; switch (c) { case '%': cmdStr(range) = "%"; pos++; break; case 's': // File name if ( file.Length() > 0 ) { cmdStr(range) = file; pos += file.Length(); gotFile = True; } else pos += range.length(); break; case 'e': // Encoding { CharC enc = EncodingTypeStr(part->encType); if ( enc.Length() > 0 ) { cmdStr(range) = enc; pos += enc.Length(); } else pos += range.length(); } break; case 't': // Type { CharC type(part->conStr); if ( type.Length() > 0 ) { cmdStr(range) = type; pos += type.Length(); } else pos += range.length(); } break; case '{': if ( parmPat->match(cmdStr, pos) ) {//// Look up the parameter// range = (*parmPat)[1]; CharC key = cmdStr(range); ParamC *param = part->Param(key); StringC val;//// If it wasn't found, check for the special cases of "ruser" and "rpwd"// used in the ftp command// if ( !param ) { if ( part->userName.size() > 0 && key.Equals("ruser", IGNORE_CASE) ) val = part->userName; else if ( part->userPass.size() > 0 && key.Equals("rpwd", IGNORE_CASE) ) {//// Encode the password so it doesn't accidently show up in clear text. In// 'tr' format, here is the encoding://// tr '\050-\172' '\060-\172\050-\057'// val = part->userPass; char *vp = val; for (int i=0; i<val.size(); i++, vp++) { if ( *vp >= '\050' && *vp <= '\172' ) { *vp += '\010'; if ( *vp > '\172' ) *vp = '\050' + (*vp - '\173'); } } } // End if need password } // End if parameter not found else val = param->val;//// Substitute the parameter value// //if ( val.size() > 0 ) { range = (*parmPat)[0]; cmdStr(range) = val; pos += val.size(); //} //else //pos += range.length(); } // End if parameter pattern found break; } // End switch character } // End for each percent pattern//// If we didn't add the file name, we have to pipe it through stdin.// if ( !gotFile && file.Length() > 0 ) { StringC pipeStr = "cat "; pipeStr += file; pipeStr += " | "; cmdStr = pipeStr + cmdStr; } return cmdStr;} // End BuildCommand/*----------------------------------------------------------------------- * Method to run mailcap test command */static intTestMailcap(MailcapC *mc, MsgPartC *part){ if ( mc->test.size() == 0 ) return True;//// See if we need a data file to pass to the command// char *file = NULL; StringC cmd; if ( part ) {//// See if there's a %s and a data file// if ( mc->test.Contains("%s") && part->CreateDataFile() ) file = part->dataFile; cmd = BuildCommand(mc->test, part, file);⌨️ 快捷键说明
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