src/bnetd/helpfile.c

/*
 * Copyright (C) 2000  Dizzy (dizzy@roedu.net)
 *
 * 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.
 *
 * 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 "common/setup_before.h"
#include <stdio.h>
#ifdef HAVE_STDDEF_H
# include <stddef.h>
#else
# ifndef NULL
#  define NULL ((void *)0)
# endif
#endif
#ifdef STDC_HEADERS
# include <stdlib.h>
#else
# ifdef HAVE_MALLOC_H
#  include <malloc.h>
# endif
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
#  include <strings.h>
# endif
#endif
#include "compat/strcasecmp.h"
#include <ctype.h>
#include <errno.h>
#include "compat/strerror.h"
#include "message.h"
#include "connection.h"
#include "common/util.h"
#include "common/eventlog.h"
#include "common/xalloc.h"
#include "helpfile.h"
#include "common/setup_after.h"
#include "account_wrap.h"
#include "command_groups.h"


static FILE* hfd=NULL; /* helpfile descriptor */

static int list_commands(t_connection *);
static int describe_command(t_connection *, char const *);


extern int helpfile_init(char const *filename)
{
    if (!filename)
    {
        eventlog(eventlog_level_error,__FUNCTION__,"got NULL filename");
        return -1;
    }
    if (!(hfd = fopen(filename,"r")))
    {
        eventlog(eventlog_level_error,__FUNCTION__,"could not open help file \"%s\" for reading (fopen: %s)",filename,pstrerror(errno));
        return -1;
    }
    return 0;
}


extern int helpfile_unload(void)
{
    if (hfd!=NULL)
    {
        if (fclose(hfd)<0)
            eventlog(eventlog_level_error,__FUNCTION__,"could not close help file after reading (fclose: %s)",pstrerror(errno));
        hfd = NULL;
    }
    return 0;
}


extern int handle_help_command(t_connection * c, char const * text)
{
    unsigned int i,j;
    char         comm[MAX_COMMAND_LEN];
        
    if (hfd == NULL)
    { /* an error ocured opening readonly the help file, helpfile_unload was called, or helpfile_init hasn't been called */
        message_send_text(c,message_type_error,c,"Oops ! There is a problem with the help file. Please contact the administrator of the server.");
        return 0;
    }
    
    rewind(hfd);
    for (i=0; text[i]!=' ' && text[i]!='\0'; i++); /* skip command */
    for (; text[i]==' '; i++);
    if (text[i]=='/') /* skip / in front of command (if present) */
        i++;
    for (j=0; text[i]!=' ' && text[i]!='\0'; i++) /* get comm */
    if (j<sizeof(comm)-1) comm[j++] = text[i];
    comm[j] = '\0';
        
    /* just read the whole file and dump only the commands */
    if (comm[0]=='\0')
    {
        list_commands(c);
        return 0;
    }
    
    if (describe_command(c,comm)==0) return 0;
    /* no description was found for this command. inform the user */
    message_send_text(c,message_type_error,c," no help available for that command");
    return 0;
}


static int list_commands(t_connection * c)
{
    char * line;
    int    i;
    
    message_send_text(c,message_type_info,c,"Chat commands:");
    while ((line=file_get_line(hfd))!=NULL)
    {
        for (i=0;line[i]==' ' && line[i]!='\0';i++); /* skip spaces in front of %command */
        if (line[i]=='%')  /* is this a command ? */
        {
            char *p,*buffer;
            int al;
            int skip;
            unsigned int length,position;
            
            /* ok. now we must see if there are any aliases */
            length=MAX_COMMAND_LEN+1; position=0;
            buffer=xmalloc(length+1); /* initial memory allocation = pretty fair */
            p=line+i;
            do
            {
                al=0;
                skip = 0;
                for (i=1;p[i]!=' ' && p[i]!='\0' && p[i]!='#';i++); /* skip command */
                if (p[i]==' ') al=1; /* we have something after the command.. must remember that */
                p[i]='\0'; /* end the string at the end of the command */
                p[0]='/'; /* change the leading character (% or space) read from the help file to / */
                if (!(command_get_group(p) & account_get_command_groups(conn_get_account(c)))) skip=1;
                if (length<strlen(p)+position+1)
                /* if we don't have enough space in the buffer then get some */
                length=strlen(p)+position+1; /* the new length */
                buffer=xrealloc(buffer,length+1);
                buffer[position++]=' '; /* put a space before each alias */
                /* add the alias to the output string */
                strcpy(buffer+position,p); position+=strlen(p);
                if (al)
                {
                    for (;p[i+1]==' ' && p[i+1]!='\0' && p[i+1]!='#';i++); /* skip spaces */
                    if (p[i+1]=='\0' || p[i+1]=='#')
                    {
                        al=0; continue;
                    }
                    p+=i; /* jump to the next command */
                }
            } while (al);
            if (!skip) message_send_text(c,message_type_info,c,buffer); /* print out the buffer */
            xfree(buffer);
        }
    }
    file_get_line(NULL); // clear file_get_line buffer
    return 0;
}


static int describe_command(t_connection * c, char const * comm)
{
    char * line;
    int    i;
    
    /* ok. the client requested help for a specific command */
    while ((line=file_get_line(hfd))!=NULL)
    {
        for (i=0;line[i]==' ' && line[i]!='\0';i++); /* skip spaces in front of %command */
        if (line[i]=='%') /* is this a command ? */
        {
            char *p;
            int al;
            /* ok. now we must see if there are any aliases */
            p=line+i;
            do
            {
                al=0;
                for (i=1;p[i]!=' ' && p[i]!='\0' && p[i]!='#';i++); /* skip command */
                if (p[i]==' ') al=1; /* we have something after the command.. must remember that */
                p[i]='\0'; /* end the string at the end of the command */
                if (strcasecmp(comm,p+1)==0) /* is this the command the user asked for help ? */
                {
                    while ((line=file_get_line(hfd))!=NULL)
                    { /* write everything until we get another % or EOF */
                        for (i=0;line[i]==' ';i++); /* skip spaces in front of a possible % */
                        if (line[i]=='%')
                        {
                            break; /* we reached another command */
                        }
                        if (line[0]!='#')
                        { /* is this a whole line comment ? */
                            /* truncate the line when a comment starts */
                            for (;line[i]!='\0' && line[i]!='#';i++);
                            if (line[i]=='#') line[i]='\0';
                            message_send_text(c,message_type_info,c,line);
                        }
                    }
                    return 0;
                }
                if (al)
                {
                    for (;p[i+1]==' ' && p[i+1]!='\0';i++); /* skip spaces */
                    if (p[i+1]=='\0')
                    {
                        al=0; continue;
                    }
                    p+=i; /* jump to the next command */
                }
            } while (al);
        }
    }
    file_get_line(NULL); // clear file_get_line buffer
    
    return -1;
}

1	sysadm	1.1	/*
2			* Copyright (C) 2000 Dizzy (dizzy@roedu.net)
3			*
4			* This program is free software; you can redistribute it and/or
5			* modify it under the terms of the GNU General Public License
6			* as published by the Free Software Foundation; either version 2
7			* of the License, or (at your option) any later version.
8			*
9			* This program is distributed in the hope that it will be useful,
10			* but WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12			* GNU General Public License for more details.
13			*
14			* You should have received a copy of the GNU General Public License
15			* along with this program; if not, write to the Free Software
16			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17			*/
18			#include "common/setup_before.h"
19			#include <stdio.h>
20			#ifdef HAVE_STDDEF_H
21			# include <stddef.h>
22			#else
23			# ifndef NULL
24			# define NULL ((void *)0)
25			# endif
26			#endif
27			#ifdef STDC_HEADERS
28			# include <stdlib.h>
29			#else
30			# ifdef HAVE_MALLOC_H
31			# include <malloc.h>
32			# endif
33			#endif
34			#ifdef HAVE_STRING_H
35			# include <string.h>
36			#else
37			# ifdef HAVE_STRINGS_H
38			# include <strings.h>
39			# endif
40			#endif
41			#include "compat/strcasecmp.h"
42			#include <ctype.h>
43			#include <errno.h>
44			#include "compat/strerror.h"
45			#include "message.h"
46			#include "connection.h"
47			#include "common/util.h"
48			#include "common/eventlog.h"
49			#include "common/xalloc.h"
50			#include "helpfile.h"
51			#include "common/setup_after.h"
52			#include "account_wrap.h"
53			#include "command_groups.h"
54
55
56			static FILE* hfd=NULL; /* helpfile descriptor */
57
58			static int list_commands(t_connection *);
59			static int describe_command(t_connection , char const );
60
61
62			extern int helpfile_init(char const *filename)
63			{
64			if (!filename)
65			{
66			eventlog(eventlog_level_error,__FUNCTION__,"got NULL filename");
67			return -1;
68			}
69			if (!(hfd = fopen(filename,"r")))
70			{
71			eventlog(eventlog_level_error,__FUNCTION__,"could not open help file \"%s\" for reading (fopen: %s)",filename,pstrerror(errno));
72			return -1;
73			}
74			return 0;
75			}
76
77
78			extern int helpfile_unload(void)
79			{
80			if (hfd!=NULL)
81			{
82			if (fclose(hfd)<0)
83			eventlog(eventlog_level_error,__FUNCTION__,"could not close help file after reading (fclose: %s)",pstrerror(errno));
84			hfd = NULL;
85			}
86			return 0;
87			}
88
89
90			extern int handle_help_command(t_connection * c, char const * text)
91			{
92			unsigned int i,j;
93			char comm[MAX_COMMAND_LEN];
94
95			if (hfd == NULL)
96			{ /* an error ocured opening readonly the help file, helpfile_unload was called, or helpfile_init hasn't been called */
97			message_send_text(c,message_type_error,c,"Oops ! There is a problem with the help file. Please contact the administrator of the server.");
98			return 0;
99			}
100
101			rewind(hfd);
102			for (i=0; text[i]!=' ' && text[i]!='\0'; i++); /* skip command */
103			for (; text[i]==' '; i++);
104			if (text[i]=='/') /* skip / in front of command (if present) */
105			i++;
106			for (j=0; text[i]!=' ' && text[i]!='\0'; i++) /* get comm */
107			if (j<sizeof(comm)-1) comm[j++] = text[i];
108			comm[j] = '\0';
109
110			/* just read the whole file and dump only the commands */
111			if (comm[0]=='\0')
112			{
113			list_commands(c);
114			return 0;
115			}
116
117			if (describe_command(c,comm)==0) return 0;
118			/* no description was found for this command. inform the user */
119			message_send_text(c,message_type_error,c," no help available for that command");
120			return 0;
121			}
122
123
124			static int list_commands(t_connection * c)
125			{
126			char * line;
127			int i;
128
129			message_send_text(c,message_type_info,c,"Chat commands:");
130			while ((line=file_get_line(hfd))!=NULL)
131			{
132			for (i=0;line[i]==' ' && line[i]!='\0';i++); /* skip spaces in front of %command */
133			if (line[i]=='%') /* is this a command ? */
134			{
135			char p,buffer;
136			int al;
137			int skip;
138			unsigned int length,position;
139
140			/* ok. now we must see if there are any aliases */
141			length=MAX_COMMAND_LEN+1; position=0;
142			buffer=xmalloc(length+1); /* initial memory allocation = pretty fair */
143			p=line+i;
144			do
145			{
146			al=0;
147			skip = 0;
148			for (i=1;p[i]!=' ' && p[i]!='\0' && p[i]!='#';i++); /* skip command */
149			if (p[i]==' ') al=1; /* we have something after the command.. must remember that */
150			p[i]='\0'; /* end the string at the end of the command */
151			p[0]='/'; /* change the leading character (% or space) read from the help file to / */
152			if (!(command_get_group(p) & account_get_command_groups(conn_get_account(c)))) skip=1;
153			if (length<strlen(p)+position+1)
154			/* if we don't have enough space in the buffer then get some */
155			length=strlen(p)+position+1; /* the new length */
156			buffer=xrealloc(buffer,length+1);
157			buffer[position++]=' '; /* put a space before each alias */
158			/* add the alias to the output string */
159			strcpy(buffer+position,p); position+=strlen(p);
160			if (al)
161			{
162			for (;p[i+1]==' ' && p[i+1]!='\0' && p[i+1]!='#';i++); /* skip spaces */
163			if (p[i+1]=='\0' \|\| p[i+1]=='#')
164			{
165			al=0; continue;
166			}
167			p+=i; /* jump to the next command */
168			}
169			} while (al);
170			if (!skip) message_send_text(c,message_type_info,c,buffer); /* print out the buffer */
171			xfree(buffer);
172			}
173			}
174			file_get_line(NULL); // clear file_get_line buffer
175			return 0;
176			}
177
178
179			static int describe_command(t_connection * c, char const * comm)
180			{
181			char * line;
182			int i;
183
184			/* ok. the client requested help for a specific command */
185			while ((line=file_get_line(hfd))!=NULL)
186			{
187			for (i=0;line[i]==' ' && line[i]!='\0';i++); /* skip spaces in front of %command */
188			if (line[i]=='%') /* is this a command ? */
189			{
190			char *p;
191			int al;
192			/* ok. now we must see if there are any aliases */
193			p=line+i;
194			do
195			{
196			al=0;
197			for (i=1;p[i]!=' ' && p[i]!='\0' && p[i]!='#';i++); /* skip command */
198			if (p[i]==' ') al=1; /* we have something after the command.. must remember that */
199			p[i]='\0'; /* end the string at the end of the command */
200			if (strcasecmp(comm,p+1)==0) /* is this the command the user asked for help ? */
201			{
202			while ((line=file_get_line(hfd))!=NULL)
203			{ /* write everything until we get another % or EOF */
204			for (i=0;line[i]==' ';i++); /* skip spaces in front of a possible % */
205			if (line[i]=='%')
206			{
207			break; /* we reached another command */
208			}
209			if (line[0]!='#')
210			{ /* is this a whole line comment ? */
211			/* truncate the line when a comment starts */
212			for (;line[i]!='\0' && line[i]!='#';i++);
213			if (line[i]=='#') line[i]='\0';
214			message_send_text(c,message_type_info,c,line);
215			}
216			}
217			return 0;
218			}
219			if (al)
220			{
221			for (;p[i+1]==' ' && p[i+1]!='\0';i++); /* skip spaces */
222			if (p[i+1]=='\0')
223			{
224			al=0; continue;
225			}
226			p+=i; /* jump to the next command */
227			}
228			} while (al);
229			}
230			}
231			file_get_line(NULL); // clear file_get_line buffer
232
233			return -1;
234			}
235
webmaster@leafok.com	ViewVC Help
Powered by ViewVC 1.3.0-beta1