int read_sort_file(char *filename, int source, char *source_path[])
{
FILE *fd;
char sort_filename[16385];
int priority;
if((fd = fopen(filename, "r")) == NULL) {
perror("Could not open sort_list file...");
return FALSE;
}
while(fscanf(fd, "%s %d", sort_filename, &priority) != EOF)
if(priority >= -32768 && priority <= 32767)
add_sort_list(sort_filename, priority, source, source_path);
else
ERROR("Sort file %s, priority %d outside range of -32767:32768 - skipping...\n", sort_filename, priority);
fclose(fd);
return TRUE;
}
int read_sort_file(char *filename, int source, char *source_path[])
{
FILE *fd;
char line_buffer[MAX_LINE + 1]; /* overflow safe */
char sort_filename[MAX_LINE + 1]; /* overflow safe */
char *line, *name;
int n, priority, res;
if((fd = fopen(filename, "r")) == NULL) {
ERROR("Failed to open sort file \"%s\" because %s\n",
filename, strerror(errno));
return FALSE;
}
while(fgets(line = line_buffer, MAX_LINE + 1, fd) != NULL) {
int len = strlen(line);
if(len == MAX_LINE && line[len - 1] != '\n') {
/* line too large */
ERROR("Line too long when reading "
"sort file \"%s\", larger than %d "
"bytes\n", filename, MAX_LINE);
goto failed;
}
/*
* Remove '\n' terminator if it exists (the last line
* in the file may not be '\n' terminated)
*/
if(len && line[len - 1] == '\n')
line[len - 1] = '\0';
/* Skip any leading whitespace */
while(isspace(*line))
line ++;
/* if comment line, skip */
if(*line == '#')
continue;
/*
* Scan for filename, don't use sscanf() and "%s" because
* that can't handle filenames with spaces
*/
for(name = sort_filename; !isspace(*line) && *line != '\0';) {
if(*line == '\\') {
line ++;
if (*line == '\0')
break;
}
*name ++ = *line ++;
}
*name = '\0';
/*
* if filename empty, then line was empty of anything but
* whitespace or a backslash character. Skip empy lines
*/
if(sort_filename[0] == '\0')
continue;
/*
* Scan the rest of the line, we expect a decimal number
* which is the filename priority
*/
errno = 0;
res = sscanf(line, "%d%n", &priority, &n);
if((res < 1 || errno) && errno != ERANGE) {
if(errno == 0)
/* No error, assume EOL or match failure */
ERROR("Sort file \"%s\", can't find priority "
"in entry \"%s\", EOL or match "
"failure\n", filename, line_buffer);
else
/* Some other failure not ERANGE */
ERROR("Sscanf failed reading sort file \"%s\" "
"because %s\n", filename,
strerror(errno));
goto failed;
} else if((errno == ERANGE) ||
(priority < -32768 || priority > 32767)) {
ERROR("Sort file \"%s\", entry \"%s\" has priority "
"outside range of -32767:32768.\n", filename,
line_buffer);
goto failed;
}
/* Skip any trailing whitespace */
line += n;
while(isspace(*line))
line ++;
if(*line != '\0') {
ERROR("Sort file \"%s\", trailing characters after "
"priority in entry \"%s\"\n", filename,
line_buffer);
goto failed;
}
res = add_sort_list(sort_filename, priority, source,
source_path);
if(res == FALSE)
goto failed;
}
if(ferror(fd)) {
ERROR("Reading sort file \"%s\" failed because %s\n", filename,
strerror(errno));
goto failed;
}
fclose(fd);
return TRUE;
failed:
fclose(fd);
return FALSE;
}
