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	/*
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