Commit b9bb6468 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont

Lift the line length limit on config files (fixes #4338)

parent 3b7f8b1f
......@@ -183,33 +183,27 @@ int config_LoadConfigFile( vlc_object_t *p_this )
rewind (file); /* no BOM, rewind */
}
char line[1024];
char *line = NULL;
size_t bufsize;
ssize_t linelen;
/* Ensure consistent number formatting... */
locale_t loc = newlocale (LC_NUMERIC_MASK, "C", NULL);
locale_t baseloc = uselocale (loc);
vlc_rwlock_wrlock (&config_lock);
while (fgets (line, 1024, file) != NULL)
while ((linelen = getline (&line, &bufsize, file)) != -1)
{
/* Ignore comments and empty lines */
switch (line[0])
{
case '#':
case '[':
case '\n':
case '\0':
continue;
}
line[linelen - 1] = '\0'; /* trim newline */
char *ptr = strchr (line, '\n');
if (ptr != NULL)
*ptr = '\0';
/* Ignore comments, section and empty lines */
if (memchr ("#[", line[0], 3) != NULL)
continue;
/* look for option name */
const char *psz_option_name = line;
ptr = strchr (line, '=');
char *ptr = strchr (line, '=');
if (ptr == NULL)
continue; /* syntax error */
*ptr = '\0';
......@@ -261,6 +255,7 @@ int config_LoadConfigFile( vlc_object_t *p_this )
}
}
vlc_rwlock_unlock (&config_lock);
free (line);
if (ferror (file))
{
......@@ -375,13 +370,7 @@ static int SaveConfigFile( vlc_object_t *p_this, const char *psz_module_name,
bool b_autosave )
{
module_t *p_parser;
FILE *file = NULL;
char *permanent = NULL, *temporary = NULL;
char p_line[1024], *p_index2;
unsigned long i_sizebuf = 0;
char *p_bigbuffer = NULL, *p_index;
bool b_backup;
int i_index;
if( config_PrepareDir( p_this ) )
{
......@@ -389,8 +378,13 @@ static int SaveConfigFile( vlc_object_t *p_this, const char *psz_module_name,
return -1;
}
file = config_OpenConfigFile( p_this );
if( file != NULL )
/* List all available modules */
module_t **list = module_list_get (NULL);
char *bigbuf = NULL;
size_t bigsize = 0;
FILE *file = config_OpenConfigFile (p_this);
if (file != NULL)
{
struct stat st;
......@@ -403,72 +397,54 @@ static int SaveConfigFile( vlc_object_t *p_this, const char *psz_module_name,
msg_Err (p_this, "configuration file is read-only");
goto error;
}
i_sizebuf = ( st.st_size < LONG_MAX ) ? st.st_size : 0;
}
p_bigbuffer = p_index = malloc( i_sizebuf+1 );
if( !p_bigbuffer )
bigsize = (st.st_size < LONG_MAX) ? st.st_size : 0;
bigbuf = malloc (bigsize + 1);
if (bigbuf == NULL)
goto error;
p_bigbuffer[0] = 0;
/* List all available modules */
module_t **list = module_list_get (NULL);
/* backup file into memory, we only need to backup the sections we
* won't save later on */
char *p_index = bigbuf;
char *line = NULL;
size_t bufsize;
ssize_t linelen;
bool backup = false;
/* backup file into memory, we only need to backup the sections we won't
* save later on */
b_backup = false;
while( file && fgets( p_line, 1024, file ) )
{
if( (p_line[0] == '[') && (p_index2 = strchr(p_line,']')))
while ((linelen = getline (&line, &bufsize, file)) != -1)
{
char *p_index2;
/* we found a section, check if we need to do a backup */
for( i_index = 0; (p_parser = list[i_index]) != NULL; i_index++ )
if ((line[0] == '[') && (p_index2 = strchr(line,']')))
{
if( ((p_index2 - &p_line[1])
== (int)strlen(p_parser->psz_object_name) )
&& !memcmp( &p_line[1], p_parser->psz_object_name,
strlen(p_parser->psz_object_name) ) )
/* we found a new section, check if we need to do a backup */
backup = true;
for (int i = 0; (p_parser = list[i]) != NULL; i++)
{
if( !psz_module_name )
break;
else if( !strcmp( psz_module_name,
p_parser->psz_object_name ) )
if (!strncmp (line + 1, p_parser->psz_object_name,
strlen (p_parser->psz_object_name))
&& ((psz_module_name == NULL)
|| !strcmp (psz_module_name, p_parser->psz_object_name)))
{
backup = false; /* no, we will rewrite it! */
break;
}
}
if( list[i_index] == NULL )
{
/* we don't have this section in our list so we need to back
* it up */
*p_index2 = 0;
#if 0
msg_Dbg( p_this, "backing up config for unknown module \"%s\"",
&p_line[1] );
#endif
*p_index2 = ']';
b_backup = true;
}
else
{
b_backup = false;
}
}
/* save line if requested and line is valid (doesn't begin with a
* space, tab, or eol) */
if( b_backup && (p_line[0] != '\n') && (p_line[0] != ' ')
&& (p_line[0] != '\t') )
if (backup && !memchr ("\n\t ", line[0], 3))
{
strcpy( p_index, p_line );
p_index += strlen( p_line );
memcpy (p_index, line, linelen);
p_index += linelen;
}
}
if( file )
fclose( file );
fclose (file);
file = NULL;
*p_index = '\0';
bigsize = p_index - bigbuf;
}
/*
* Save module config in file
......@@ -533,7 +509,7 @@ static int SaveConfigFile( vlc_object_t *p_this, const char *psz_module_name,
vlc_rwlock_rdlock (&config_lock);*/
/* Look for the selected module, if NULL then save everything */
for( i_index = 0; (p_parser = list[i_index]) != NULL; i_index++ )
for (int i = 0; (p_parser = list[i]) != NULL; i++)
{
module_config_t *p_item, *p_end;
......@@ -647,7 +623,8 @@ static int SaveConfigFile( vlc_object_t *p_this, const char *psz_module_name,
/*
* Restore old settings from the config in file
*/
fputs( p_bigbuffer, file );
if (bigsize)
fwrite (bigbuf, 1, bigsize, file);
/*
* Flush to disk and replace atomically
......@@ -685,7 +662,7 @@ static int SaveConfigFile( vlc_object_t *p_this, const char *psz_module_name,
free (temporary);
free (permanent);
free( p_bigbuffer );
free (bigbuf);
return 0;
error:
......@@ -693,7 +670,7 @@ error:
fclose( file );
free (temporary);
free (permanent);
free( p_bigbuffer );
free (bigbuf);
return -1;
}
......
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