src/bnetd/topic.c

/*
 * 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.
 */
#define TOPIC_INTERNAL_ACCESS
#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/strrchr.h"
#include "compat/strdup.h"
#include "compat/strcasecmp.h"
#include "compat/pdir.h"
#include <errno.h>
#include "compat/strerror.h"
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# ifdef HAVE_SYS_TIME_H
#  include <sys/time.h>
# else
#  include <time.h>
# endif
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include "common/eventlog.h"
#include "common/list.h"
#include "common/field_sizes.h"
#include "common/xalloc.h"
#include "prefs.h"
#include "topic.h"
#include "common/setup_after.h"

static t_list * topiclist_head=NULL;

t_topic * get_topic(char const * channel_name)
{
  t_elem  * curr;
  t_topic * topic;

  if (topiclist_head)
  {
    LIST_TRAVERSE(topiclist_head,curr)
    {
      if (!(topic = elem_get_data(curr)))
      {
        eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
        continue;
      }
      if (strcasecmp(channel_name,topic->channel_name)==0) return topic;
    }
  }
  return NULL;
}

char * channel_get_topic(char const * channel_name)
{
  t_topic * topic;

  if (!(topic = get_topic(channel_name)))
    return NULL;
  else
    return topic->topic;
}

int topiclist_save(char const * topic_file)
{
  t_elem  * curr;
  t_topic * topic;
  FILE * fp;

  if (topiclist_head)
  {

    if ((fp = fopen(topic_file,"w"))==NULL) 
    {
      eventlog(eventlog_level_error, __FUNCTION__,"can't open topic file");
      return -1;
    }

    LIST_TRAVERSE(topiclist_head,curr)
    {
      if (!(topic = elem_get_data(curr)))
      {
        eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
        continue;
      }
      if (topic->save == DO_SAVE_TOPIC) 
        fprintf(fp,"\"%s\",\"%s\"\n",topic->channel_name,topic->topic);
    }

    fclose(fp);
  }

  return 0;
}

int topiclist_add_topic(char const * channel_name, char const * topic_text, int do_save)
{
  t_topic * topic;
  
  topic = xmalloc(sizeof(t_topic));
  topic->channel_name = xstrdup(channel_name);
  topic->topic = xstrdup(topic_text);
  list_prepend_data(topiclist_head,topic);
  topic->save = do_save;
  return 0;
}

int channel_set_topic(char const * channel_name, char const * topic_text, int do_save)
{
  t_topic * topic;

  if (!(channel_name))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL channel_name");
    return -1;
  }

  if (!(topic_text))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL topic");
    return -1;
  }

  if ((topic = get_topic(channel_name)))
  {
    xfree((void *)topic->topic);
    topic->topic = xstrdup(topic_text);
  }
  else
  {
    topiclist_add_topic(channel_name, topic_text,do_save);
  }

  if (do_save == DO_SAVE_TOPIC)
  {
    if (topiclist_save(prefs_get_topicfile())<0)
    {
      eventlog(eventlog_level_error,__FUNCTION__,"error saving topic list");
      return -1;
    }
  }

  return 0;
}

int topiclist_load(char const * topicfile)
{
  FILE * fp;
  char channel_name[CHANNEL_NAME_LEN];
  char topic[MAX_TOPIC_LEN];

  // make sure to unload previous topiclist before loading again
  if (topiclist_head) topiclist_unload();

  if ((fp = fopen(topicfile,"r"))==NULL) 
  {
    eventlog(eventlog_level_error, __FUNCTION__,"can't open topic file");
    return -1;
  }
  
  topiclist_head = list_create();
  
  eventlog(eventlog_level_trace,__FUNCTION__,"start reading topic file");

  while (fscanf(fp,"\"%[^\"]\",\"%[^\"]\"\n",channel_name,topic)==2)
  {
    topiclist_add_topic(channel_name,topic,DO_SAVE_TOPIC);
    eventlog(eventlog_level_trace,__FUNCTION__,"channel: %s topic: \"%s\"",channel_name,topic);
  }

  eventlog(eventlog_level_trace,__FUNCTION__,"finished reading topic file");

  fclose(fp);
  return 0;
}

int topiclist_unload(void)
{
  t_elem  * curr;
  t_topic * topic;

  if (topiclist_head)
  {
    LIST_TRAVERSE(topiclist_head,curr)
    {
      if (!(topic = elem_get_data(curr)))
      {
        eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
        continue;
      }

      if (topic->channel_name) xfree((void *)topic->channel_name);
      if (topic->topic) xfree((void *)topic->topic);
      xfree((void *)topic);
      list_remove_elem(topiclist_head,&curr);
    }
    if (list_destroy(topiclist_head)<0)
      return -1;

    topiclist_head = NULL;
  }
  return 0;
}
1	sysadm	1.1	/*
2			* This program is free software; you can redistribute it and/or
3			* modify it under the terms of the GNU General Public License
4			* as published by the Free Software Foundation; either version 2
5			* of the License, or (at your option) any later version.
6			*
7			* This program is distributed in the hope that it will be useful,
8			* but WITHOUT ANY WARRANTY; without even the implied warranty of
9			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10			* GNU General Public License for more details.
11			*
12			* You should have received a copy of the GNU General Public License
13			* along with this program; if not, write to the Free Software
14			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15			*/
16			#define TOPIC_INTERNAL_ACCESS
17			#include "common/setup_before.h"
18			#include <stdio.h>
19			#ifdef HAVE_STDDEF_H
20			# include <stddef.h>
21			#else
22			# ifndef NULL
23			# define NULL ((void *)0)
24			# endif
25			#endif
26			#ifdef STDC_HEADERS
27			# include <stdlib.h>
28			#else
29			# ifdef HAVE_MALLOC_H
30			# include <malloc.h>
31			# endif
32			#endif
33			#ifdef HAVE_STRING_H
34			# include <string.h>
35			#else
36			# ifdef HAVE_STRINGS_H
37			# include <strings.h>
38			# endif
39			#endif
40			#include "compat/strrchr.h"
41			#include "compat/strdup.h"
42			#include "compat/strcasecmp.h"
43			#include "compat/pdir.h"
44			#include <errno.h>
45			#include "compat/strerror.h"
46			#ifdef TIME_WITH_SYS_TIME
47			# include <sys/time.h>
48			# include <time.h>
49			#else
50			# ifdef HAVE_SYS_TIME_H
51			# include <sys/time.h>
52			# else
53			# include <time.h>
54			# endif
55			#endif
56			#ifdef HAVE_SYS_TYPES_H
57			# include <sys/types.h>
58			#endif
59			#include "common/eventlog.h"
60			#include "common/list.h"
61			#include "common/field_sizes.h"
62			#include "common/xalloc.h"
63			#include "prefs.h"
64			#include "topic.h"
65			#include "common/setup_after.h"
66
67			static t_list * topiclist_head=NULL;
68
69			t_topic * get_topic(char const * channel_name)
70			{
71			t_elem * curr;
72			t_topic * topic;
73
74			if (topiclist_head)
75			{
76			LIST_TRAVERSE(topiclist_head,curr)
77			{
78			if (!(topic = elem_get_data(curr)))
79			{
80			eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
81			continue;
82			}
83			if (strcasecmp(channel_name,topic->channel_name)==0) return topic;
84			}
85			}
86			return NULL;
87			}
88
89			char * channel_get_topic(char const * channel_name)
90			{
91			t_topic * topic;
92
93			if (!(topic = get_topic(channel_name)))
94			return NULL;
95			else
96			return topic->topic;
97			}
98
99			int topiclist_save(char const * topic_file)
100			{
101			t_elem * curr;
102			t_topic * topic;
103			FILE * fp;
104
105			if (topiclist_head)
106			{
107
108			if ((fp = fopen(topic_file,"w"))==NULL)
109			{
110			eventlog(eventlog_level_error, __FUNCTION__,"can't open topic file");
111			return -1;
112			}
113
114			LIST_TRAVERSE(topiclist_head,curr)
115			{
116			if (!(topic = elem_get_data(curr)))
117			{
118			eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
119			continue;
120			}
121			if (topic->save == DO_SAVE_TOPIC)
122			fprintf(fp,"\"%s\",\"%s\"\n",topic->channel_name,topic->topic);
123			}
124
125			fclose(fp);
126			}
127
128			return 0;
129			}
130
131			int topiclist_add_topic(char const * channel_name, char const * topic_text, int do_save)
132			{
133			t_topic * topic;
134
135			topic = xmalloc(sizeof(t_topic));
136			topic->channel_name = xstrdup(channel_name);
137			topic->topic = xstrdup(topic_text);
138			list_prepend_data(topiclist_head,topic);
139			topic->save = do_save;
140			return 0;
141			}
142
143			int channel_set_topic(char const * channel_name, char const * topic_text, int do_save)
144			{
145			t_topic * topic;
146
147			if (!(channel_name))
148			{
149			eventlog(eventlog_level_error,__FUNCTION__,"got NULL channel_name");
150			return -1;
151			}
152
153			if (!(topic_text))
154			{
155			eventlog(eventlog_level_error,__FUNCTION__,"got NULL topic");
156			return -1;
157			}
158
159			if ((topic = get_topic(channel_name)))
160			{
161			xfree((void *)topic->topic);
162			topic->topic = xstrdup(topic_text);
163			}
164			else
165			{
166			topiclist_add_topic(channel_name, topic_text,do_save);
167			}
168
169			if (do_save == DO_SAVE_TOPIC)
170			{
171			if (topiclist_save(prefs_get_topicfile())<0)
172			{
173			eventlog(eventlog_level_error,__FUNCTION__,"error saving topic list");
174			return -1;
175			}
176			}
177
178			return 0;
179			}
180
181			int topiclist_load(char const * topicfile)
182			{
183			FILE * fp;
184			char channel_name[CHANNEL_NAME_LEN];
185			char topic[MAX_TOPIC_LEN];
186
187			// make sure to unload previous topiclist before loading again
188			if (topiclist_head) topiclist_unload();
189
190			if ((fp = fopen(topicfile,"r"))==NULL)
191			{
192			eventlog(eventlog_level_error, __FUNCTION__,"can't open topic file");
193			return -1;
194			}
195
196			topiclist_head = list_create();
197
198			eventlog(eventlog_level_trace,__FUNCTION__,"start reading topic file");
199
200			while (fscanf(fp,"\"%[^\"]\",\"%[^\"]\"\n",channel_name,topic)==2)
201			{
202			topiclist_add_topic(channel_name,topic,DO_SAVE_TOPIC);
203			eventlog(eventlog_level_trace,__FUNCTION__,"channel: %s topic: \"%s\"",channel_name,topic);
204			}
205
206			eventlog(eventlog_level_trace,__FUNCTION__,"finished reading topic file");
207
208			fclose(fp);
209			return 0;
210			}
211
212			int topiclist_unload(void)
213			{
214			t_elem * curr;
215			t_topic * topic;
216
217			if (topiclist_head)
218			{
219			LIST_TRAVERSE(topiclist_head,curr)
220			{
221			if (!(topic = elem_get_data(curr)))
222			{
223			eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
224			continue;
225			}
226
227			if (topic->channel_name) xfree((void *)topic->channel_name);
228			if (topic->topic) xfree((void *)topic->topic);
229			xfree((void *)topic);
230			list_remove_elem(topiclist_head,&curr);
231			}
232			if (list_destroy(topiclist_head)<0)
233			return -1;
234
235			topiclist_head = NULL;
236			}
237			return 0;
238			}
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